diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Target/Process.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Target/Process.cpp | 11473 |
1 files changed, 5542 insertions, 5931 deletions
diff --git a/contrib/llvm/tools/lldb/source/Target/Process.cpp b/contrib/llvm/tools/lldb/source/Target/Process.cpp index 3d10654..c72662e 100644 --- a/contrib/llvm/tools/lldb/source/Target/Process.cpp +++ b/contrib/llvm/tools/lldb/source/Target/Process.cpp @@ -13,6 +13,7 @@ #include <mutex> // Other libraries and framework includes +#include "llvm/Support/ScopedPrinter.h" // Project includes #include "Plugins/Process/Utility/InferiorCallPOSIX.h" #include "lldb/Breakpoint/BreakpointLocation.h" @@ -54,6 +55,7 @@ #include "lldb/Target/Process.h" #include "lldb/Target/RegisterContext.h" #include "lldb/Target/StopInfo.h" +#include "lldb/Target/StructuredDataPlugin.h" #include "lldb/Target/SystemRuntime.h" #include "lldb/Target/Target.h" #include "lldb/Target/TargetList.h" @@ -62,12 +64,14 @@ #include "lldb/Target/ThreadPlanBase.h" #include "lldb/Target/UnixSignals.h" #include "lldb/Utility/NameMatches.h" +#include "lldb/Utility/SelectHelper.h" using namespace lldb; using namespace lldb_private; +using namespace std::chrono; -// Comment out line below to disable memory caching, overriding the process setting -// target.process.disable-memory-cache +// Comment out line below to disable memory caching, overriding the process +// setting target.process.disable-memory-cache #define ENABLE_MEMORY_CACHING #ifdef ENABLE_MEMORY_CACHING @@ -76,6561 +80,6168 @@ using namespace lldb_private; #define DISABLE_MEM_CACHE_DEFAULT true #endif -class ProcessOptionValueProperties : public OptionValueProperties -{ +class ProcessOptionValueProperties : public OptionValueProperties { public: - ProcessOptionValueProperties (const ConstString &name) : - OptionValueProperties (name) - { - } - - // This constructor is used when creating ProcessOptionValueProperties when it - // is part of a new lldb_private::Process instance. It will copy all current - // global property values as needed - ProcessOptionValueProperties (ProcessProperties *global_properties) : - OptionValueProperties(*global_properties->GetValueProperties()) - { - } - - const Property * - GetPropertyAtIndex(const ExecutionContext *exe_ctx, bool will_modify, uint32_t idx) const override - { - // When getting the value for a key from the process options, we will always - // try and grab the setting from the current process if there is one. Else we just - // use the one from this instance. - if (exe_ctx) - { - Process *process = exe_ctx->GetProcessPtr(); - if (process) - { - ProcessOptionValueProperties *instance_properties = static_cast<ProcessOptionValueProperties *>(process->GetValueProperties().get()); - if (this != instance_properties) - return instance_properties->ProtectedGetPropertyAtIndex (idx); - } - } - return ProtectedGetPropertyAtIndex (idx); - } + ProcessOptionValueProperties(const ConstString &name) + : OptionValueProperties(name) {} + + // This constructor is used when creating ProcessOptionValueProperties when it + // is part of a new lldb_private::Process instance. It will copy all current + // global property values as needed + ProcessOptionValueProperties(ProcessProperties *global_properties) + : OptionValueProperties(*global_properties->GetValueProperties()) {} + + const Property *GetPropertyAtIndex(const ExecutionContext *exe_ctx, + bool will_modify, + uint32_t idx) const override { + // When getting the value for a key from the process options, we will always + // try and grab the setting from the current process if there is one. Else + // we just + // use the one from this instance. + if (exe_ctx) { + Process *process = exe_ctx->GetProcessPtr(); + if (process) { + ProcessOptionValueProperties *instance_properties = + static_cast<ProcessOptionValueProperties *>( + process->GetValueProperties().get()); + if (this != instance_properties) + return instance_properties->ProtectedGetPropertyAtIndex(idx); + } + } + return ProtectedGetPropertyAtIndex(idx); + } }; -static PropertyDefinition -g_properties[] = -{ - { "disable-memory-cache" , OptionValue::eTypeBoolean, false, DISABLE_MEM_CACHE_DEFAULT, nullptr, nullptr, "Disable reading and caching of memory in fixed-size units." }, - { "extra-startup-command", OptionValue::eTypeArray , false, OptionValue::eTypeString, nullptr, nullptr, "A list containing extra commands understood by the particular process plugin used. " - "For instance, to turn on debugserver logging set this to \"QSetLogging:bitmask=LOG_DEFAULT;\"" }, - { "ignore-breakpoints-in-expressions", OptionValue::eTypeBoolean, true, true, nullptr, nullptr, "If true, breakpoints will be ignored during expression evaluation." }, - { "unwind-on-error-in-expressions", OptionValue::eTypeBoolean, true, true, nullptr, nullptr, "If true, errors in expression evaluation will unwind the stack back to the state before the call." }, - { "python-os-plugin-path", OptionValue::eTypeFileSpec, false, true, nullptr, nullptr, "A path to a python OS plug-in module file that contains a OperatingSystemPlugIn class." }, - { "stop-on-sharedlibrary-events" , OptionValue::eTypeBoolean, true, false, nullptr, nullptr, "If true, stop when a shared library is loaded or unloaded." }, - { "detach-keeps-stopped" , OptionValue::eTypeBoolean, true, false, nullptr, nullptr, "If true, detach will attempt to keep the process stopped." }, - { "memory-cache-line-size" , OptionValue::eTypeUInt64, false, 512, nullptr, nullptr, "The memory cache line size" }, - { "optimization-warnings" , OptionValue::eTypeBoolean, false, true, nullptr, nullptr, "If true, warn when stopped in code that is optimized where stepping and variable availability may not behave as expected." }, - { nullptr , OptionValue::eTypeInvalid, false, 0, nullptr, nullptr, nullptr } -}; +static PropertyDefinition g_properties[] = { + {"disable-memory-cache", OptionValue::eTypeBoolean, false, + DISABLE_MEM_CACHE_DEFAULT, nullptr, nullptr, + "Disable reading and caching of memory in fixed-size units."}, + {"extra-startup-command", OptionValue::eTypeArray, false, + OptionValue::eTypeString, nullptr, nullptr, + "A list containing extra commands understood by the particular process " + "plugin used. " + "For instance, to turn on debugserver logging set this to " + "\"QSetLogging:bitmask=LOG_DEFAULT;\""}, + {"ignore-breakpoints-in-expressions", OptionValue::eTypeBoolean, true, true, + nullptr, nullptr, + "If true, breakpoints will be ignored during expression evaluation."}, + {"unwind-on-error-in-expressions", OptionValue::eTypeBoolean, true, true, + nullptr, nullptr, "If true, errors in expression evaluation will unwind " + "the stack back to the state before the call."}, + {"python-os-plugin-path", OptionValue::eTypeFileSpec, false, true, nullptr, + nullptr, "A path to a python OS plug-in module file that contains a " + "OperatingSystemPlugIn class."}, + {"stop-on-sharedlibrary-events", OptionValue::eTypeBoolean, true, false, + nullptr, nullptr, + "If true, stop when a shared library is loaded or unloaded."}, + {"detach-keeps-stopped", OptionValue::eTypeBoolean, true, false, nullptr, + nullptr, "If true, detach will attempt to keep the process stopped."}, + {"memory-cache-line-size", OptionValue::eTypeUInt64, false, 512, nullptr, + nullptr, "The memory cache line size"}, + {"optimization-warnings", OptionValue::eTypeBoolean, false, true, nullptr, + nullptr, "If true, warn when stopped in code that is optimized where " + "stepping and variable availability may not behave as expected."}, + {nullptr, OptionValue::eTypeInvalid, false, 0, nullptr, nullptr, nullptr}}; enum { - ePropertyDisableMemCache, - ePropertyExtraStartCommand, - ePropertyIgnoreBreakpointsInExpressions, - ePropertyUnwindOnErrorInExpressions, - ePropertyPythonOSPluginPath, - ePropertyStopOnSharedLibraryEvents, - ePropertyDetachKeepsStopped, - ePropertyMemCacheLineSize, - ePropertyWarningOptimization + ePropertyDisableMemCache, + ePropertyExtraStartCommand, + ePropertyIgnoreBreakpointsInExpressions, + ePropertyUnwindOnErrorInExpressions, + ePropertyPythonOSPluginPath, + ePropertyStopOnSharedLibraryEvents, + ePropertyDetachKeepsStopped, + ePropertyMemCacheLineSize, + ePropertyWarningOptimization }; -ProcessProperties::ProcessProperties (lldb_private::Process *process) : - Properties(), - m_process(process) // Can be nullptr for global ProcessProperties -{ - if (process == nullptr) - { - // Global process properties, set them up one time - m_collection_sp.reset (new ProcessOptionValueProperties(ConstString("process"))); - m_collection_sp->Initialize(g_properties); - m_collection_sp->AppendProperty(ConstString("thread"), - ConstString("Settings specific to threads."), - true, - Thread::GetGlobalProperties()->GetValueProperties()); - } - else - { - m_collection_sp.reset (new ProcessOptionValueProperties(Process::GetGlobalProperties().get())); - m_collection_sp->SetValueChangedCallback(ePropertyPythonOSPluginPath, ProcessProperties::OptionValueChangedCallback, this); - } +ProcessProperties::ProcessProperties(lldb_private::Process *process) + : Properties(), + m_process(process) // Can be nullptr for global ProcessProperties +{ + if (process == nullptr) { + // Global process properties, set them up one time + m_collection_sp.reset( + new ProcessOptionValueProperties(ConstString("process"))); + m_collection_sp->Initialize(g_properties); + m_collection_sp->AppendProperty( + ConstString("thread"), ConstString("Settings specific to threads."), + true, Thread::GetGlobalProperties()->GetValueProperties()); + } else { + m_collection_sp.reset( + new ProcessOptionValueProperties(Process::GetGlobalProperties().get())); + m_collection_sp->SetValueChangedCallback( + ePropertyPythonOSPluginPath, + ProcessProperties::OptionValueChangedCallback, this); + } } ProcessProperties::~ProcessProperties() = default; -void -ProcessProperties::OptionValueChangedCallback (void *baton, OptionValue *option_value) -{ - ProcessProperties *properties = (ProcessProperties *)baton; - if (properties->m_process) - properties->m_process->LoadOperatingSystemPlugin(true); +void ProcessProperties::OptionValueChangedCallback(void *baton, + OptionValue *option_value) { + ProcessProperties *properties = (ProcessProperties *)baton; + if (properties->m_process) + properties->m_process->LoadOperatingSystemPlugin(true); } -bool -ProcessProperties::GetDisableMemoryCache() const -{ - const uint32_t idx = ePropertyDisableMemCache; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetDisableMemoryCache() const { + const uint32_t idx = ePropertyDisableMemCache; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } -uint64_t -ProcessProperties::GetMemoryCacheLineSize() const -{ - const uint32_t idx = ePropertyMemCacheLineSize; - return m_collection_sp->GetPropertyAtIndexAsUInt64(nullptr, idx, g_properties[idx].default_uint_value); +uint64_t ProcessProperties::GetMemoryCacheLineSize() const { + const uint32_t idx = ePropertyMemCacheLineSize; + return m_collection_sp->GetPropertyAtIndexAsUInt64( + nullptr, idx, g_properties[idx].default_uint_value); } -Args -ProcessProperties::GetExtraStartupCommands () const -{ - Args args; - const uint32_t idx = ePropertyExtraStartCommand; - m_collection_sp->GetPropertyAtIndexAsArgs(nullptr, idx, args); - return args; +Args ProcessProperties::GetExtraStartupCommands() const { + Args args; + const uint32_t idx = ePropertyExtraStartCommand; + m_collection_sp->GetPropertyAtIndexAsArgs(nullptr, idx, args); + return args; } -void -ProcessProperties::SetExtraStartupCommands (const Args &args) -{ - const uint32_t idx = ePropertyExtraStartCommand; - m_collection_sp->SetPropertyAtIndexFromArgs(nullptr, idx, args); +void ProcessProperties::SetExtraStartupCommands(const Args &args) { + const uint32_t idx = ePropertyExtraStartCommand; + m_collection_sp->SetPropertyAtIndexFromArgs(nullptr, idx, args); } -FileSpec -ProcessProperties::GetPythonOSPluginPath () const -{ - const uint32_t idx = ePropertyPythonOSPluginPath; - return m_collection_sp->GetPropertyAtIndexAsFileSpec(nullptr, idx); +FileSpec ProcessProperties::GetPythonOSPluginPath() const { + const uint32_t idx = ePropertyPythonOSPluginPath; + return m_collection_sp->GetPropertyAtIndexAsFileSpec(nullptr, idx); } -void -ProcessProperties::SetPythonOSPluginPath (const FileSpec &file) -{ - const uint32_t idx = ePropertyPythonOSPluginPath; - m_collection_sp->SetPropertyAtIndexAsFileSpec(nullptr, idx, file); +void ProcessProperties::SetPythonOSPluginPath(const FileSpec &file) { + const uint32_t idx = ePropertyPythonOSPluginPath; + m_collection_sp->SetPropertyAtIndexAsFileSpec(nullptr, idx, file); } -bool -ProcessProperties::GetIgnoreBreakpointsInExpressions () const -{ - const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetIgnoreBreakpointsInExpressions() const { + const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } - -void -ProcessProperties::SetIgnoreBreakpointsInExpressions (bool ignore) -{ - const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions; - m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore); + +void ProcessProperties::SetIgnoreBreakpointsInExpressions(bool ignore) { + const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions; + m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore); } -bool -ProcessProperties::GetUnwindOnErrorInExpressions () const -{ - const uint32_t idx = ePropertyUnwindOnErrorInExpressions; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetUnwindOnErrorInExpressions() const { + const uint32_t idx = ePropertyUnwindOnErrorInExpressions; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } - -void -ProcessProperties::SetUnwindOnErrorInExpressions (bool ignore) -{ - const uint32_t idx = ePropertyUnwindOnErrorInExpressions; - m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore); + +void ProcessProperties::SetUnwindOnErrorInExpressions(bool ignore) { + const uint32_t idx = ePropertyUnwindOnErrorInExpressions; + m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, ignore); } -bool -ProcessProperties::GetStopOnSharedLibraryEvents () const -{ - const uint32_t idx = ePropertyStopOnSharedLibraryEvents; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetStopOnSharedLibraryEvents() const { + const uint32_t idx = ePropertyStopOnSharedLibraryEvents; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } - -void -ProcessProperties::SetStopOnSharedLibraryEvents (bool stop) -{ - const uint32_t idx = ePropertyStopOnSharedLibraryEvents; - m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop); + +void ProcessProperties::SetStopOnSharedLibraryEvents(bool stop) { + const uint32_t idx = ePropertyStopOnSharedLibraryEvents; + m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop); } -bool -ProcessProperties::GetDetachKeepsStopped () const -{ - const uint32_t idx = ePropertyDetachKeepsStopped; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetDetachKeepsStopped() const { + const uint32_t idx = ePropertyDetachKeepsStopped; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } - -void -ProcessProperties::SetDetachKeepsStopped (bool stop) -{ - const uint32_t idx = ePropertyDetachKeepsStopped; - m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop); + +void ProcessProperties::SetDetachKeepsStopped(bool stop) { + const uint32_t idx = ePropertyDetachKeepsStopped; + m_collection_sp->SetPropertyAtIndexAsBoolean(nullptr, idx, stop); } -bool -ProcessProperties::GetWarningsOptimization () const -{ - const uint32_t idx = ePropertyWarningOptimization; - return m_collection_sp->GetPropertyAtIndexAsBoolean(nullptr, idx, g_properties[idx].default_uint_value != 0); +bool ProcessProperties::GetWarningsOptimization() const { + const uint32_t idx = ePropertyWarningOptimization; + return m_collection_sp->GetPropertyAtIndexAsBoolean( + nullptr, idx, g_properties[idx].default_uint_value != 0); } -void -ProcessInstanceInfo::Dump (Stream &s, Platform *platform) const -{ - const char *cstr; - if (m_pid != LLDB_INVALID_PROCESS_ID) - s.Printf (" pid = %" PRIu64 "\n", m_pid); +void ProcessInstanceInfo::Dump(Stream &s, Platform *platform) const { + const char *cstr; + if (m_pid != LLDB_INVALID_PROCESS_ID) + s.Printf(" pid = %" PRIu64 "\n", m_pid); - if (m_parent_pid != LLDB_INVALID_PROCESS_ID) - s.Printf (" parent = %" PRIu64 "\n", m_parent_pid); + if (m_parent_pid != LLDB_INVALID_PROCESS_ID) + s.Printf(" parent = %" PRIu64 "\n", m_parent_pid); - if (m_executable) - { - s.Printf (" name = %s\n", m_executable.GetFilename().GetCString()); - s.PutCString (" file = "); - m_executable.Dump(&s); - s.EOL(); - } - const uint32_t argc = m_arguments.GetArgumentCount(); - if (argc > 0) - { - for (uint32_t i = 0; i < argc; i++) - { - const char *arg = m_arguments.GetArgumentAtIndex(i); - if (i < 10) - s.Printf (" arg[%u] = %s\n", i, arg); - else - s.Printf ("arg[%u] = %s\n", i, arg); - } + if (m_executable) { + s.Printf(" name = %s\n", m_executable.GetFilename().GetCString()); + s.PutCString(" file = "); + m_executable.Dump(&s); + s.EOL(); + } + const uint32_t argc = m_arguments.GetArgumentCount(); + if (argc > 0) { + for (uint32_t i = 0; i < argc; i++) { + const char *arg = m_arguments.GetArgumentAtIndex(i); + if (i < 10) + s.Printf(" arg[%u] = %s\n", i, arg); + else + s.Printf("arg[%u] = %s\n", i, arg); } + } - const uint32_t envc = m_environment.GetArgumentCount(); - if (envc > 0) - { - for (uint32_t i = 0; i < envc; i++) - { - const char *env = m_environment.GetArgumentAtIndex(i); - if (i < 10) - s.Printf (" env[%u] = %s\n", i, env); - else - s.Printf ("env[%u] = %s\n", i, env); - } + const uint32_t envc = m_environment.GetArgumentCount(); + if (envc > 0) { + for (uint32_t i = 0; i < envc; i++) { + const char *env = m_environment.GetArgumentAtIndex(i); + if (i < 10) + s.Printf(" env[%u] = %s\n", i, env); + else + s.Printf("env[%u] = %s\n", i, env); } + } + + if (m_arch.IsValid()) { + s.Printf(" arch = "); + m_arch.DumpTriple(s); + s.EOL(); + } + + if (m_uid != UINT32_MAX) { + cstr = platform->GetUserName(m_uid); + s.Printf(" uid = %-5u (%s)\n", m_uid, cstr ? cstr : ""); + } + if (m_gid != UINT32_MAX) { + cstr = platform->GetGroupName(m_gid); + s.Printf(" gid = %-5u (%s)\n", m_gid, cstr ? cstr : ""); + } + if (m_euid != UINT32_MAX) { + cstr = platform->GetUserName(m_euid); + s.Printf(" euid = %-5u (%s)\n", m_euid, cstr ? cstr : ""); + } + if (m_egid != UINT32_MAX) { + cstr = platform->GetGroupName(m_egid); + s.Printf(" egid = %-5u (%s)\n", m_egid, cstr ? cstr : ""); + } +} + +void ProcessInstanceInfo::DumpTableHeader(Stream &s, Platform *platform, + bool show_args, bool verbose) { + const char *label; + if (show_args || verbose) + label = "ARGUMENTS"; + else + label = "NAME"; + + if (verbose) { + s.Printf("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE " + " %s\n", + label); + s.PutCString("====== ====== ========== ========== ========== ========== " + "======================== ============================\n"); + } else { + s.Printf("PID PARENT USER TRIPLE %s\n", label); + s.PutCString("====== ====== ========== ======================== " + "============================\n"); + } +} + +void ProcessInstanceInfo::DumpAsTableRow(Stream &s, Platform *platform, + bool show_args, bool verbose) const { + if (m_pid != LLDB_INVALID_PROCESS_ID) { + const char *cstr; + s.Printf("%-6" PRIu64 " %-6" PRIu64 " ", m_pid, m_parent_pid); + StreamString arch_strm; if (m_arch.IsValid()) - { - s.Printf (" arch = "); - m_arch.DumpTriple(s); - s.EOL(); - } - - if (m_uid != UINT32_MAX) - { - cstr = platform->GetUserName (m_uid); - s.Printf (" uid = %-5u (%s)\n", m_uid, cstr ? cstr : ""); - } - if (m_gid != UINT32_MAX) - { - cstr = platform->GetGroupName (m_gid); - s.Printf (" gid = %-5u (%s)\n", m_gid, cstr ? cstr : ""); - } - if (m_euid != UINT32_MAX) - { - cstr = platform->GetUserName (m_euid); - s.Printf (" euid = %-5u (%s)\n", m_euid, cstr ? cstr : ""); - } - if (m_egid != UINT32_MAX) - { - cstr = platform->GetGroupName (m_egid); - s.Printf (" egid = %-5u (%s)\n", m_egid, cstr ? cstr : ""); - } -} - -void -ProcessInstanceInfo::DumpTableHeader (Stream &s, Platform *platform, bool show_args, bool verbose) -{ - const char *label; - if (show_args || verbose) - label = "ARGUMENTS"; + m_arch.DumpTriple(arch_strm); + + if (verbose) { + cstr = platform->GetUserName(m_uid); + if (cstr && + cstr[0]) // Watch for empty string that indicates lookup failed + s.Printf("%-10s ", cstr); + else + s.Printf("%-10u ", m_uid); + + cstr = platform->GetGroupName(m_gid); + if (cstr && + cstr[0]) // Watch for empty string that indicates lookup failed + s.Printf("%-10s ", cstr); + else + s.Printf("%-10u ", m_gid); + + cstr = platform->GetUserName(m_euid); + if (cstr && + cstr[0]) // Watch for empty string that indicates lookup failed + s.Printf("%-10s ", cstr); + else + s.Printf("%-10u ", m_euid); + + cstr = platform->GetGroupName(m_egid); + if (cstr && + cstr[0]) // Watch for empty string that indicates lookup failed + s.Printf("%-10s ", cstr); + else + s.Printf("%-10u ", m_egid); + + s.Printf("%-24s ", arch_strm.GetData()); + } else { + s.Printf("%-10s %-24s ", platform->GetUserName(m_euid), + arch_strm.GetData()); + } + + if (verbose || show_args) { + const uint32_t argc = m_arguments.GetArgumentCount(); + if (argc > 0) { + for (uint32_t i = 0; i < argc; i++) { + if (i > 0) + s.PutChar(' '); + s.PutCString(m_arguments.GetArgumentAtIndex(i)); + } + } + } else { + s.PutCString(GetName()); + } + + s.EOL(); + } +} + +Error ProcessLaunchCommandOptions::SetOptionValue( + uint32_t option_idx, llvm::StringRef option_arg, + ExecutionContext *execution_context) { + Error error; + const int short_option = m_getopt_table[option_idx].val; + + switch (short_option) { + case 's': // Stop at program entry point + launch_info.GetFlags().Set(eLaunchFlagStopAtEntry); + break; + + case 'i': // STDIN for read only + { + FileAction action; + if (action.Open(STDIN_FILENO, FileSpec{option_arg, false}, true, false)) + launch_info.AppendFileAction(action); + break; + } + + case 'o': // Open STDOUT for write only + { + FileAction action; + if (action.Open(STDOUT_FILENO, FileSpec{option_arg, false}, false, true)) + launch_info.AppendFileAction(action); + break; + } + + case 'e': // STDERR for write only + { + FileAction action; + if (action.Open(STDERR_FILENO, FileSpec{option_arg, false}, false, true)) + launch_info.AppendFileAction(action); + break; + } + + case 'p': // Process plug-in name + launch_info.SetProcessPluginName(option_arg); + break; + + case 'n': // Disable STDIO + { + FileAction action; + const FileSpec dev_null{FileSystem::DEV_NULL, false}; + if (action.Open(STDIN_FILENO, dev_null, true, false)) + launch_info.AppendFileAction(action); + if (action.Open(STDOUT_FILENO, dev_null, false, true)) + launch_info.AppendFileAction(action); + if (action.Open(STDERR_FILENO, dev_null, false, true)) + launch_info.AppendFileAction(action); + break; + } + + case 'w': + launch_info.SetWorkingDirectory(FileSpec{option_arg, false}); + break; + + case 't': // Open process in new terminal window + launch_info.GetFlags().Set(eLaunchFlagLaunchInTTY); + break; + + case 'a': { + TargetSP target_sp = + execution_context ? execution_context->GetTargetSP() : TargetSP(); + PlatformSP platform_sp = + target_sp ? target_sp->GetPlatform() : PlatformSP(); + if (!launch_info.GetArchitecture().SetTriple(option_arg, platform_sp.get())) + launch_info.GetArchitecture().SetTriple(option_arg); + } break; + + case 'A': // Disable ASLR. + { + bool success; + const bool disable_aslr_arg = + Args::StringToBoolean(option_arg, true, &success); + if (success) + disable_aslr = disable_aslr_arg ? eLazyBoolYes : eLazyBoolNo; else - label = "NAME"; - - if (verbose) - { - s.Printf ("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE %s\n", label); - s.PutCString ("====== ====== ========== ========== ========== ========== ======================== ============================\n"); - } + error.SetErrorStringWithFormat( + "Invalid boolean value for disable-aslr option: '%s'", + option_arg.empty() ? "<null>" : option_arg.str().c_str()); + break; + } + + case 'X': // shell expand args. + { + bool success; + const bool expand_args = Args::StringToBoolean(option_arg, true, &success); + if (success) + launch_info.SetShellExpandArguments(expand_args); else - { - s.Printf ("PID PARENT USER TRIPLE %s\n", label); - s.PutCString ("====== ====== ========== ======================== ============================\n"); - } -} - -void -ProcessInstanceInfo::DumpAsTableRow (Stream &s, Platform *platform, bool show_args, bool verbose) const -{ - if (m_pid != LLDB_INVALID_PROCESS_ID) - { - const char *cstr; - s.Printf ("%-6" PRIu64 " %-6" PRIu64 " ", m_pid, m_parent_pid); - - StreamString arch_strm; - if (m_arch.IsValid()) - m_arch.DumpTriple(arch_strm); - - if (verbose) - { - cstr = platform->GetUserName (m_uid); - if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed - s.Printf ("%-10s ", cstr); - else - s.Printf ("%-10u ", m_uid); - - cstr = platform->GetGroupName (m_gid); - if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed - s.Printf ("%-10s ", cstr); - else - s.Printf ("%-10u ", m_gid); - - cstr = platform->GetUserName (m_euid); - if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed - s.Printf ("%-10s ", cstr); - else - s.Printf ("%-10u ", m_euid); - - cstr = platform->GetGroupName (m_egid); - if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed - s.Printf ("%-10s ", cstr); - else - s.Printf ("%-10u ", m_egid); - - s.Printf ("%-24s ", arch_strm.GetString().c_str()); - } - else - { - s.Printf ("%-10s %-24s ", - platform->GetUserName (m_euid), - arch_strm.GetString().c_str()); - } - - if (verbose || show_args) - { - const uint32_t argc = m_arguments.GetArgumentCount(); - if (argc > 0) - { - for (uint32_t i = 0; i < argc; i++) - { - if (i > 0) - s.PutChar (' '); - s.PutCString (m_arguments.GetArgumentAtIndex(i)); - } - } - } - else - { - s.PutCString (GetName()); - } - - s.EOL(); - } -} - -Error -ProcessLaunchCommandOptions::SetOptionValue (uint32_t option_idx, const char *option_arg) -{ - Error error; - const int short_option = m_getopt_table[option_idx].val; - - switch (short_option) - { - case 's': // Stop at program entry point - launch_info.GetFlags().Set (eLaunchFlagStopAtEntry); - break; - - case 'i': // STDIN for read only - { - FileAction action; - if (action.Open(STDIN_FILENO, FileSpec{option_arg, false}, true, false)) - launch_info.AppendFileAction (action); - break; - } - - case 'o': // Open STDOUT for write only - { - FileAction action; - if (action.Open(STDOUT_FILENO, FileSpec{option_arg, false}, false, true)) - launch_info.AppendFileAction (action); - break; - } - - case 'e': // STDERR for write only - { - FileAction action; - if (action.Open(STDERR_FILENO, FileSpec{option_arg, false}, false, true)) - launch_info.AppendFileAction (action); - break; - } - - case 'p': // Process plug-in name - launch_info.SetProcessPluginName (option_arg); - break; - - case 'n': // Disable STDIO - { - FileAction action; - const FileSpec dev_null{FileSystem::DEV_NULL, false}; - if (action.Open(STDIN_FILENO, dev_null, true, false)) - launch_info.AppendFileAction (action); - if (action.Open(STDOUT_FILENO, dev_null, false, true)) - launch_info.AppendFileAction (action); - if (action.Open(STDERR_FILENO, dev_null, false, true)) - launch_info.AppendFileAction (action); - break; - } - - case 'w': - launch_info.SetWorkingDirectory(FileSpec{option_arg, false}); - break; - - case 't': // Open process in new terminal window - launch_info.GetFlags().Set (eLaunchFlagLaunchInTTY); - break; - - case 'a': - if (!launch_info.GetArchitecture().SetTriple (option_arg, m_interpreter.GetPlatform(true).get())) - launch_info.GetArchitecture().SetTriple (option_arg); - break; - - case 'A': // Disable ASLR. - { - bool success; - const bool disable_aslr_arg = Args::StringToBoolean (option_arg, true, &success); - if (success) - disable_aslr = disable_aslr_arg ? eLazyBoolYes : eLazyBoolNo; - else - error.SetErrorStringWithFormat ("Invalid boolean value for disable-aslr option: '%s'", option_arg ? option_arg : "<null>"); - break; - } - - case 'X': // shell expand args. - { - bool success; - const bool expand_args = Args::StringToBoolean (option_arg, true, &success); - if (success) - launch_info.SetShellExpandArguments(expand_args); - else - error.SetErrorStringWithFormat ("Invalid boolean value for shell-expand-args option: '%s'", option_arg ? option_arg : "<null>"); - break; - } - - case 'c': - if (option_arg && option_arg[0]) - launch_info.SetShell (FileSpec(option_arg, false)); - else - launch_info.SetShell (HostInfo::GetDefaultShell()); - break; - - case 'v': - launch_info.GetEnvironmentEntries().AppendArgument(option_arg); - break; - - default: - error.SetErrorStringWithFormat("unrecognized short option character '%c'", short_option); - break; - } - return error; -} - -OptionDefinition -ProcessLaunchCommandOptions::g_option_table[] = -{ -{ LLDB_OPT_SET_ALL, false, "stop-at-entry", 's', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Stop at the entry point of the program when launching a process." }, -{ LLDB_OPT_SET_ALL, false, "disable-aslr", 'A', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Set whether to disable address space layout randomization when launching a process." }, -{ LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypePlugin, "Name of the process plugin you want to use." }, -{ LLDB_OPT_SET_ALL, false, "working-dir", 'w', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeDirectoryName, "Set the current working directory to <path> when running the inferior." }, -{ LLDB_OPT_SET_ALL, false, "arch", 'a', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeArchitecture, "Set the architecture for the process to launch when ambiguous." }, -{ LLDB_OPT_SET_ALL, false, "environment", 'v', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeNone, "Specify an environment variable name/value string (--environment NAME=VALUE). Can be specified multiple times for subsequent environment entries." }, -{ LLDB_OPT_SET_1|LLDB_OPT_SET_2|LLDB_OPT_SET_3, false, "shell", 'c', OptionParser::eOptionalArgument, nullptr, nullptr, 0, eArgTypeFilename, "Run the process in a shell (not supported on all platforms)." }, - -{ LLDB_OPT_SET_1 , false, "stdin", 'i', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFilename, "Redirect stdin for the process to <filename>." }, -{ LLDB_OPT_SET_1 , false, "stdout", 'o', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFilename, "Redirect stdout for the process to <filename>." }, -{ LLDB_OPT_SET_1 , false, "stderr", 'e', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFilename, "Redirect stderr for the process to <filename>." }, - -{ LLDB_OPT_SET_2 , false, "tty", 't', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Start the process in a terminal (not supported on all platforms)." }, - -{ LLDB_OPT_SET_3 , false, "no-stdio", 'n', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Do not set up for terminal I/O to go to running process." }, -{ LLDB_OPT_SET_4, false, "shell-expand-args", 'X', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Set whether to shell expand arguments to the process when launching." }, -{ 0 , false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr } + error.SetErrorStringWithFormat( + "Invalid boolean value for shell-expand-args option: '%s'", + option_arg.empty() ? "<null>" : option_arg.str().c_str()); + break; + } + + case 'c': + if (!option_arg.empty()) + launch_info.SetShell(FileSpec(option_arg, false)); + else + launch_info.SetShell(HostInfo::GetDefaultShell()); + break; + + case 'v': + launch_info.GetEnvironmentEntries().AppendArgument(option_arg); + break; + + default: + error.SetErrorStringWithFormat("unrecognized short option character '%c'", + short_option); + break; + } + return error; +} + +static OptionDefinition g_process_launch_options[] = { + {LLDB_OPT_SET_ALL, false, "stop-at-entry", 's', OptionParser::eNoArgument, + nullptr, nullptr, 0, eArgTypeNone, + "Stop at the entry point of the program when launching a process."}, + {LLDB_OPT_SET_ALL, false, "disable-aslr", 'A', + OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, + "Set whether to disable address space layout randomization when launching " + "a process."}, + {LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument, + nullptr, nullptr, 0, eArgTypePlugin, + "Name of the process plugin you want to use."}, + {LLDB_OPT_SET_ALL, false, "working-dir", 'w', + OptionParser::eRequiredArgument, nullptr, nullptr, 0, + eArgTypeDirectoryName, + "Set the current working directory to <path> when running the inferior."}, + {LLDB_OPT_SET_ALL, false, "arch", 'a', OptionParser::eRequiredArgument, + nullptr, nullptr, 0, eArgTypeArchitecture, + "Set the architecture for the process to launch when ambiguous."}, + {LLDB_OPT_SET_ALL, false, "environment", 'v', + OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeNone, + "Specify an environment variable name/value string (--environment " + "NAME=VALUE). Can be specified multiple times for subsequent environment " + "entries."}, + {LLDB_OPT_SET_1 | LLDB_OPT_SET_2 | LLDB_OPT_SET_3, false, "shell", 'c', + OptionParser::eOptionalArgument, nullptr, nullptr, 0, eArgTypeFilename, + "Run the process in a shell (not supported on all platforms)."}, + + {LLDB_OPT_SET_1, false, "stdin", 'i', OptionParser::eRequiredArgument, + nullptr, nullptr, 0, eArgTypeFilename, + "Redirect stdin for the process to <filename>."}, + {LLDB_OPT_SET_1, false, "stdout", 'o', OptionParser::eRequiredArgument, + nullptr, nullptr, 0, eArgTypeFilename, + "Redirect stdout for the process to <filename>."}, + {LLDB_OPT_SET_1, false, "stderr", 'e', OptionParser::eRequiredArgument, + nullptr, nullptr, 0, eArgTypeFilename, + "Redirect stderr for the process to <filename>."}, + + {LLDB_OPT_SET_2, false, "tty", 't', OptionParser::eNoArgument, nullptr, + nullptr, 0, eArgTypeNone, + "Start the process in a terminal (not supported on all platforms)."}, + + {LLDB_OPT_SET_3, false, "no-stdio", 'n', OptionParser::eNoArgument, nullptr, + nullptr, 0, eArgTypeNone, + "Do not set up for terminal I/O to go to running process."}, + {LLDB_OPT_SET_4, false, "shell-expand-args", 'X', + OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, + "Set whether to shell expand arguments to the process when launching."}, }; -bool -ProcessInstanceInfoMatch::NameMatches (const char *process_name) const -{ - if (m_name_match_type == eNameMatchIgnore || process_name == nullptr) - return true; - const char *match_name = m_match_info.GetName(); - if (!match_name) - return true; - - return lldb_private::NameMatches (process_name, m_name_match_type, match_name); +llvm::ArrayRef<OptionDefinition> ProcessLaunchCommandOptions::GetDefinitions() { + return llvm::makeArrayRef(g_process_launch_options); } -bool -ProcessInstanceInfoMatch::Matches (const ProcessInstanceInfo &proc_info) const -{ - if (!NameMatches (proc_info.GetName())) - return false; - - if (m_match_info.ProcessIDIsValid() && - m_match_info.GetProcessID() != proc_info.GetProcessID()) - return false; - - if (m_match_info.ParentProcessIDIsValid() && - m_match_info.GetParentProcessID() != proc_info.GetParentProcessID()) - return false; - - if (m_match_info.UserIDIsValid () && - m_match_info.GetUserID() != proc_info.GetUserID()) - return false; - - if (m_match_info.GroupIDIsValid () && - m_match_info.GetGroupID() != proc_info.GetGroupID()) - return false; - - if (m_match_info.EffectiveUserIDIsValid () && - m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID()) - return false; - - if (m_match_info.EffectiveGroupIDIsValid () && - m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID()) - return false; - - if (m_match_info.GetArchitecture().IsValid() && - !m_match_info.GetArchitecture().IsCompatibleMatch(proc_info.GetArchitecture())) - return false; +bool ProcessInstanceInfoMatch::NameMatches(const char *process_name) const { + if (m_name_match_type == eNameMatchIgnore || process_name == nullptr) return true; -} - -bool -ProcessInstanceInfoMatch::MatchAllProcesses () const -{ - if (m_name_match_type != eNameMatchIgnore) - return false; - - if (m_match_info.ProcessIDIsValid()) - return false; - - if (m_match_info.ParentProcessIDIsValid()) - return false; - - if (m_match_info.UserIDIsValid ()) - return false; - - if (m_match_info.GroupIDIsValid ()) - return false; - - if (m_match_info.EffectiveUserIDIsValid ()) - return false; - - if (m_match_info.EffectiveGroupIDIsValid ()) - return false; - - if (m_match_info.GetArchitecture().IsValid()) - return false; - - if (m_match_all_users) - return false; - + const char *match_name = m_match_info.GetName(); + if (!match_name) return true; -} -void -ProcessInstanceInfoMatch::Clear() -{ - m_match_info.Clear(); - m_name_match_type = eNameMatchIgnore; - m_match_all_users = false; + return lldb_private::NameMatches(process_name, m_name_match_type, match_name); } -ProcessSP -Process::FindPlugin (lldb::TargetSP target_sp, const char *plugin_name, ListenerSP listener_sp, const FileSpec *crash_file_path) -{ - static uint32_t g_process_unique_id = 0; - - ProcessSP process_sp; - ProcessCreateInstance create_callback = nullptr; - if (plugin_name) - { - ConstString const_plugin_name(plugin_name); - create_callback = PluginManager::GetProcessCreateCallbackForPluginName (const_plugin_name); - if (create_callback) - { - process_sp = create_callback(target_sp, listener_sp, crash_file_path); - if (process_sp) - { - if (process_sp->CanDebug(target_sp, true)) - { - process_sp->m_process_unique_id = ++g_process_unique_id; - } - else - process_sp.reset(); - } - } - } - else - { - for (uint32_t idx = 0; (create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx)) != nullptr; ++idx) - { - process_sp = create_callback(target_sp, listener_sp, crash_file_path); - if (process_sp) - { - if (process_sp->CanDebug(target_sp, false)) - { - process_sp->m_process_unique_id = ++g_process_unique_id; - break; - } - else - process_sp.reset(); - } - } - } - return process_sp; -} - -ConstString & -Process::GetStaticBroadcasterClass () -{ - static ConstString class_name ("lldb.process"); - return class_name; -} - -Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp) : - Process(target_sp, listener_sp, UnixSignals::Create(HostInfo::GetArchitecture())) -{ - // This constructor just delegates to the full Process constructor, - // defaulting to using the Host's UnixSignals. -} - -Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp, const UnixSignalsSP &unix_signals_sp) - : ProcessProperties(this), - UserID(LLDB_INVALID_PROCESS_ID), - Broadcaster((target_sp->GetDebugger().GetBroadcasterManager()), Process::GetStaticBroadcasterClass().AsCString()), - m_target_sp(target_sp), - m_public_state(eStateUnloaded), - m_private_state(eStateUnloaded), - m_private_state_broadcaster(nullptr, "lldb.process.internal_state_broadcaster"), - m_private_state_control_broadcaster(nullptr, "lldb.process.internal_state_control_broadcaster"), - m_private_state_listener_sp(Listener::MakeListener("lldb.process.internal_state_listener")), - m_mod_id(), - m_process_unique_id(0), - m_thread_index_id(0), - m_thread_id_to_index_id_map(), - m_exit_status(-1), - m_exit_string(), - m_exit_status_mutex(), - m_thread_mutex(), - m_thread_list_real(this), - m_thread_list(this), - m_extended_thread_list(this), - m_extended_thread_stop_id(0), - m_queue_list(this), - m_queue_list_stop_id(0), - m_notifications(), - m_image_tokens(), - m_listener_sp(listener_sp), - m_breakpoint_site_list(), - m_dynamic_checkers_ap(), - m_unix_signals_sp(unix_signals_sp), - m_abi_sp(), - m_process_input_reader(), - m_stdio_communication("process.stdio"), - m_stdio_communication_mutex(), - m_stdin_forward(false), - m_stdout_data(), - m_stderr_data(), - m_profile_data_comm_mutex(), - m_profile_data(), - m_iohandler_sync(0), - m_memory_cache(*this), - m_allocated_memory_cache(*this), - m_should_detach(false), - m_next_event_action_ap(), - m_public_run_lock(), - m_private_run_lock(), - m_stop_info_override_callback(nullptr), - m_finalizing(false), - m_finalize_called(false), - m_clear_thread_plans_on_stop(false), - m_force_next_event_delivery(false), - m_last_broadcast_state(eStateInvalid), - m_destroy_in_process(false), - m_can_interpret_function_calls(false), - m_warnings_issued(), - m_run_thread_plan_lock(), - m_can_jit(eCanJITDontKnow) -{ - CheckInWithManager(); - - Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); - if (log) - log->Printf("%p Process::Process()", static_cast<void *>(this)); +bool ProcessInstanceInfoMatch::Matches( + const ProcessInstanceInfo &proc_info) const { + if (!NameMatches(proc_info.GetName())) + return false; - if (!m_unix_signals_sp) - m_unix_signals_sp = std::make_shared<UnixSignals>(); + if (m_match_info.ProcessIDIsValid() && + m_match_info.GetProcessID() != proc_info.GetProcessID()) + return false; - SetEventName(eBroadcastBitStateChanged, "state-changed"); - SetEventName(eBroadcastBitInterrupt, "interrupt"); - SetEventName(eBroadcastBitSTDOUT, "stdout-available"); - SetEventName(eBroadcastBitSTDERR, "stderr-available"); - SetEventName(eBroadcastBitProfileData, "profile-data-available"); + if (m_match_info.ParentProcessIDIsValid() && + m_match_info.GetParentProcessID() != proc_info.GetParentProcessID()) + return false; - m_private_state_control_broadcaster.SetEventName(eBroadcastInternalStateControlStop, "control-stop"); - m_private_state_control_broadcaster.SetEventName(eBroadcastInternalStateControlPause, "control-pause"); - m_private_state_control_broadcaster.SetEventName(eBroadcastInternalStateControlResume, "control-resume"); + if (m_match_info.UserIDIsValid() && + m_match_info.GetUserID() != proc_info.GetUserID()) + return false; - m_listener_sp->StartListeningForEvents(this, eBroadcastBitStateChanged | eBroadcastBitInterrupt | - eBroadcastBitSTDOUT | eBroadcastBitSTDERR | - eBroadcastBitProfileData); + if (m_match_info.GroupIDIsValid() && + m_match_info.GetGroupID() != proc_info.GetGroupID()) + return false; - m_private_state_listener_sp->StartListeningForEvents(&m_private_state_broadcaster, - eBroadcastBitStateChanged | eBroadcastBitInterrupt); + if (m_match_info.EffectiveUserIDIsValid() && + m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID()) + return false; - m_private_state_listener_sp->StartListeningForEvents( - &m_private_state_control_broadcaster, eBroadcastInternalStateControlStop | eBroadcastInternalStateControlPause | - eBroadcastInternalStateControlResume); - // We need something valid here, even if just the default UnixSignalsSP. - assert(m_unix_signals_sp && "null m_unix_signals_sp after initialization"); + if (m_match_info.EffectiveGroupIDIsValid() && + m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID()) + return false; - // Allow the platform to override the default cache line size - OptionValueSP value_sp = m_collection_sp->GetPropertyAtIndex(nullptr, true, ePropertyMemCacheLineSize)->GetValue(); - uint32_t platform_cache_line_size = target_sp->GetPlatform()->GetDefaultMemoryCacheLineSize(); - if (!value_sp->OptionWasSet() && platform_cache_line_size != 0) - value_sp->SetUInt64Value(platform_cache_line_size); + if (m_match_info.GetArchitecture().IsValid() && + !m_match_info.GetArchitecture().IsCompatibleMatch( + proc_info.GetArchitecture())) + return false; + return true; } -Process::~Process() -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT)); - if (log) - log->Printf ("%p Process::~Process()", static_cast<void*>(this)); - StopPrivateStateThread(); +bool ProcessInstanceInfoMatch::MatchAllProcesses() const { + if (m_name_match_type != eNameMatchIgnore) + return false; - // ThreadList::Clear() will try to acquire this process's mutex, so - // explicitly clear the thread list here to ensure that the mutex - // is not destroyed before the thread list. - m_thread_list.Clear(); -} + if (m_match_info.ProcessIDIsValid()) + return false; -const ProcessPropertiesSP & -Process::GetGlobalProperties() -{ - // NOTE: intentional leak so we don't crash if global destructor chain gets - // called as other threads still use the result of this function - static ProcessPropertiesSP *g_settings_sp_ptr = nullptr; - static std::once_flag g_once_flag; - std::call_once(g_once_flag, []() { - g_settings_sp_ptr = new ProcessPropertiesSP(new ProcessProperties(nullptr)); - }); - return *g_settings_sp_ptr; -} + if (m_match_info.ParentProcessIDIsValid()) + return false; -void -Process::Finalize() -{ - m_finalizing = true; - - // Destroy this process if needed - switch (GetPrivateState()) - { - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - case eStateStopped: - case eStateRunning: - case eStateStepping: - case eStateCrashed: - case eStateSuspended: - Destroy(false); - break; - - case eStateInvalid: - case eStateUnloaded: - case eStateDetached: - case eStateExited: - break; - } + if (m_match_info.UserIDIsValid()) + return false; - // Clear our broadcaster before we proceed with destroying - Broadcaster::Clear(); - - // Do any cleanup needed prior to being destructed... Subclasses - // that override this method should call this superclass method as well. - - // We need to destroy the loader before the derived Process class gets destroyed - // since it is very likely that undoing the loader will require access to the real process. - m_dynamic_checkers_ap.reset(); - m_abi_sp.reset(); - m_os_ap.reset(); - m_system_runtime_ap.reset(); - m_dyld_ap.reset(); - m_jit_loaders_ap.reset(); - m_thread_list_real.Destroy(); - m_thread_list.Destroy(); - m_extended_thread_list.Destroy(); - m_queue_list.Clear(); - m_queue_list_stop_id = 0; - std::vector<Notifications> empty_notifications; - m_notifications.swap(empty_notifications); - m_image_tokens.clear(); - m_memory_cache.Clear(); - m_allocated_memory_cache.Clear(); - m_language_runtimes.clear(); - m_instrumentation_runtimes.clear(); - m_next_event_action_ap.reset(); - m_stop_info_override_callback = nullptr; - // Clear the last natural stop ID since it has a strong - // reference to this process - m_mod_id.SetStopEventForLastNaturalStopID(EventSP()); -//#ifdef LLDB_CONFIGURATION_DEBUG -// StreamFile s(stdout, false); -// EventSP event_sp; -// while (m_private_state_listener_sp->GetNextEvent(event_sp)) -// { -// event_sp->Dump (&s); -// s.EOL(); -// } -//#endif - // We have to be very careful here as the m_private_state_listener might - // contain events that have ProcessSP values in them which can keep this - // process around forever. These events need to be cleared out. - m_private_state_listener_sp->Clear(); - m_public_run_lock.TrySetRunning(); // This will do nothing if already locked - m_public_run_lock.SetStopped(); - m_private_run_lock.TrySetRunning(); // This will do nothing if already locked - m_private_run_lock.SetStopped(); - m_finalize_called = true; -} + if (m_match_info.GroupIDIsValid()) + return false; -void -Process::RegisterNotificationCallbacks (const Notifications& callbacks) -{ - m_notifications.push_back(callbacks); - if (callbacks.initialize != nullptr) - callbacks.initialize (callbacks.baton, this); -} + if (m_match_info.EffectiveUserIDIsValid()) + return false; -bool -Process::UnregisterNotificationCallbacks(const Notifications& callbacks) -{ - std::vector<Notifications>::iterator pos, end = m_notifications.end(); - for (pos = m_notifications.begin(); pos != end; ++pos) - { - if (pos->baton == callbacks.baton && - pos->initialize == callbacks.initialize && - pos->process_state_changed == callbacks.process_state_changed) - { - m_notifications.erase(pos); - return true; - } - } + if (m_match_info.EffectiveGroupIDIsValid()) return false; -} -void -Process::SynchronouslyNotifyStateChanged (StateType state) -{ - std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end(); - for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos) - { - if (notification_pos->process_state_changed) - notification_pos->process_state_changed (notification_pos->baton, this, state); - } -} + if (m_match_info.GetArchitecture().IsValid()) + return false; + + if (m_match_all_users) + return false; -// FIXME: We need to do some work on events before the general Listener sees them. -// For instance if we are continuing from a breakpoint, we need to ensure that we do -// the little "insert real insn, step & stop" trick. But we can't do that when the -// event is delivered by the broadcaster - since that is done on the thread that is -// waiting for new events, so if we needed more than one event for our handling, we would + return true; +} + +void ProcessInstanceInfoMatch::Clear() { + m_match_info.Clear(); + m_name_match_type = eNameMatchIgnore; + m_match_all_users = false; +} + +ProcessSP Process::FindPlugin(lldb::TargetSP target_sp, + llvm::StringRef plugin_name, + ListenerSP listener_sp, + const FileSpec *crash_file_path) { + static uint32_t g_process_unique_id = 0; + + ProcessSP process_sp; + ProcessCreateInstance create_callback = nullptr; + if (!plugin_name.empty()) { + ConstString const_plugin_name(plugin_name); + create_callback = + PluginManager::GetProcessCreateCallbackForPluginName(const_plugin_name); + if (create_callback) { + process_sp = create_callback(target_sp, listener_sp, crash_file_path); + if (process_sp) { + if (process_sp->CanDebug(target_sp, true)) { + process_sp->m_process_unique_id = ++g_process_unique_id; + } else + process_sp.reset(); + } + } + } else { + for (uint32_t idx = 0; + (create_callback = + PluginManager::GetProcessCreateCallbackAtIndex(idx)) != nullptr; + ++idx) { + process_sp = create_callback(target_sp, listener_sp, crash_file_path); + if (process_sp) { + if (process_sp->CanDebug(target_sp, false)) { + process_sp->m_process_unique_id = ++g_process_unique_id; + break; + } else + process_sp.reset(); + } + } + } + return process_sp; +} + +ConstString &Process::GetStaticBroadcasterClass() { + static ConstString class_name("lldb.process"); + return class_name; +} + +Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp) + : Process(target_sp, listener_sp, + UnixSignals::Create(HostInfo::GetArchitecture())) { + // This constructor just delegates to the full Process constructor, + // defaulting to using the Host's UnixSignals. +} + +Process::Process(lldb::TargetSP target_sp, ListenerSP listener_sp, + const UnixSignalsSP &unix_signals_sp) + : ProcessProperties(this), UserID(LLDB_INVALID_PROCESS_ID), + Broadcaster((target_sp->GetDebugger().GetBroadcasterManager()), + Process::GetStaticBroadcasterClass().AsCString()), + m_target_sp(target_sp), m_public_state(eStateUnloaded), + m_private_state(eStateUnloaded), + m_private_state_broadcaster(nullptr, + "lldb.process.internal_state_broadcaster"), + m_private_state_control_broadcaster( + nullptr, "lldb.process.internal_state_control_broadcaster"), + m_private_state_listener_sp( + Listener::MakeListener("lldb.process.internal_state_listener")), + m_mod_id(), m_process_unique_id(0), m_thread_index_id(0), + m_thread_id_to_index_id_map(), m_exit_status(-1), m_exit_string(), + m_exit_status_mutex(), m_thread_mutex(), m_thread_list_real(this), + m_thread_list(this), m_extended_thread_list(this), + m_extended_thread_stop_id(0), m_queue_list(this), m_queue_list_stop_id(0), + m_notifications(), m_image_tokens(), m_listener_sp(listener_sp), + m_breakpoint_site_list(), m_dynamic_checkers_ap(), + m_unix_signals_sp(unix_signals_sp), m_abi_sp(), m_process_input_reader(), + m_stdio_communication("process.stdio"), m_stdio_communication_mutex(), + m_stdin_forward(false), m_stdout_data(), m_stderr_data(), + m_profile_data_comm_mutex(), m_profile_data(), m_iohandler_sync(0), + m_memory_cache(*this), m_allocated_memory_cache(*this), + m_should_detach(false), m_next_event_action_ap(), m_public_run_lock(), + m_private_run_lock(), m_stop_info_override_callback(nullptr), + m_finalizing(false), m_finalize_called(false), + m_clear_thread_plans_on_stop(false), m_force_next_event_delivery(false), + m_last_broadcast_state(eStateInvalid), m_destroy_in_process(false), + m_can_interpret_function_calls(false), m_warnings_issued(), + m_run_thread_plan_lock(), m_can_jit(eCanJITDontKnow) { + CheckInWithManager(); + + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); + if (log) + log->Printf("%p Process::Process()", static_cast<void *>(this)); + + if (!m_unix_signals_sp) + m_unix_signals_sp = std::make_shared<UnixSignals>(); + + SetEventName(eBroadcastBitStateChanged, "state-changed"); + SetEventName(eBroadcastBitInterrupt, "interrupt"); + SetEventName(eBroadcastBitSTDOUT, "stdout-available"); + SetEventName(eBroadcastBitSTDERR, "stderr-available"); + SetEventName(eBroadcastBitProfileData, "profile-data-available"); + SetEventName(eBroadcastBitStructuredData, "structured-data-available"); + + m_private_state_control_broadcaster.SetEventName( + eBroadcastInternalStateControlStop, "control-stop"); + m_private_state_control_broadcaster.SetEventName( + eBroadcastInternalStateControlPause, "control-pause"); + m_private_state_control_broadcaster.SetEventName( + eBroadcastInternalStateControlResume, "control-resume"); + + m_listener_sp->StartListeningForEvents( + this, eBroadcastBitStateChanged | eBroadcastBitInterrupt | + eBroadcastBitSTDOUT | eBroadcastBitSTDERR | + eBroadcastBitProfileData | eBroadcastBitStructuredData); + + m_private_state_listener_sp->StartListeningForEvents( + &m_private_state_broadcaster, + eBroadcastBitStateChanged | eBroadcastBitInterrupt); + + m_private_state_listener_sp->StartListeningForEvents( + &m_private_state_control_broadcaster, + eBroadcastInternalStateControlStop | eBroadcastInternalStateControlPause | + eBroadcastInternalStateControlResume); + // We need something valid here, even if just the default UnixSignalsSP. + assert(m_unix_signals_sp && "null m_unix_signals_sp after initialization"); + + // Allow the platform to override the default cache line size + OptionValueSP value_sp = + m_collection_sp + ->GetPropertyAtIndex(nullptr, true, ePropertyMemCacheLineSize) + ->GetValue(); + uint32_t platform_cache_line_size = + target_sp->GetPlatform()->GetDefaultMemoryCacheLineSize(); + if (!value_sp->OptionWasSet() && platform_cache_line_size != 0) + value_sp->SetUInt64Value(platform_cache_line_size); +} + +Process::~Process() { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); + if (log) + log->Printf("%p Process::~Process()", static_cast<void *>(this)); + StopPrivateStateThread(); + + // ThreadList::Clear() will try to acquire this process's mutex, so + // explicitly clear the thread list here to ensure that the mutex + // is not destroyed before the thread list. + m_thread_list.Clear(); +} + +const ProcessPropertiesSP &Process::GetGlobalProperties() { + // NOTE: intentional leak so we don't crash if global destructor chain gets + // called as other threads still use the result of this function + static ProcessPropertiesSP *g_settings_sp_ptr = + new ProcessPropertiesSP(new ProcessProperties(nullptr)); + return *g_settings_sp_ptr; +} + +void Process::Finalize() { + m_finalizing = true; + + // Destroy this process if needed + switch (GetPrivateState()) { + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + case eStateStopped: + case eStateRunning: + case eStateStepping: + case eStateCrashed: + case eStateSuspended: + Destroy(false); + break; + + case eStateInvalid: + case eStateUnloaded: + case eStateDetached: + case eStateExited: + break; + } + + // Clear our broadcaster before we proceed with destroying + Broadcaster::Clear(); + + // Do any cleanup needed prior to being destructed... Subclasses + // that override this method should call this superclass method as well. + + // We need to destroy the loader before the derived Process class gets + // destroyed + // since it is very likely that undoing the loader will require access to the + // real process. + m_dynamic_checkers_ap.reset(); + m_abi_sp.reset(); + m_os_ap.reset(); + m_system_runtime_ap.reset(); + m_dyld_ap.reset(); + m_jit_loaders_ap.reset(); + m_thread_list_real.Destroy(); + m_thread_list.Destroy(); + m_extended_thread_list.Destroy(); + m_queue_list.Clear(); + m_queue_list_stop_id = 0; + std::vector<Notifications> empty_notifications; + m_notifications.swap(empty_notifications); + m_image_tokens.clear(); + m_memory_cache.Clear(); + m_allocated_memory_cache.Clear(); + m_language_runtimes.clear(); + m_instrumentation_runtimes.clear(); + m_next_event_action_ap.reset(); + m_stop_info_override_callback = nullptr; + // Clear the last natural stop ID since it has a strong + // reference to this process + m_mod_id.SetStopEventForLastNaturalStopID(EventSP()); + //#ifdef LLDB_CONFIGURATION_DEBUG + // StreamFile s(stdout, false); + // EventSP event_sp; + // while (m_private_state_listener_sp->GetNextEvent(event_sp)) + // { + // event_sp->Dump (&s); + // s.EOL(); + // } + //#endif + // We have to be very careful here as the m_private_state_listener might + // contain events that have ProcessSP values in them which can keep this + // process around forever. These events need to be cleared out. + m_private_state_listener_sp->Clear(); + m_public_run_lock.TrySetRunning(); // This will do nothing if already locked + m_public_run_lock.SetStopped(); + m_private_run_lock.TrySetRunning(); // This will do nothing if already locked + m_private_run_lock.SetStopped(); + m_structured_data_plugin_map.clear(); + m_finalize_called = true; +} + +void Process::RegisterNotificationCallbacks(const Notifications &callbacks) { + m_notifications.push_back(callbacks); + if (callbacks.initialize != nullptr) + callbacks.initialize(callbacks.baton, this); +} + +bool Process::UnregisterNotificationCallbacks(const Notifications &callbacks) { + std::vector<Notifications>::iterator pos, end = m_notifications.end(); + for (pos = m_notifications.begin(); pos != end; ++pos) { + if (pos->baton == callbacks.baton && + pos->initialize == callbacks.initialize && + pos->process_state_changed == callbacks.process_state_changed) { + m_notifications.erase(pos); + return true; + } + } + return false; +} + +void Process::SynchronouslyNotifyStateChanged(StateType state) { + std::vector<Notifications>::iterator notification_pos, + notification_end = m_notifications.end(); + for (notification_pos = m_notifications.begin(); + notification_pos != notification_end; ++notification_pos) { + if (notification_pos->process_state_changed) + notification_pos->process_state_changed(notification_pos->baton, this, + state); + } +} + +// FIXME: We need to do some work on events before the general Listener sees +// them. +// For instance if we are continuing from a breakpoint, we need to ensure that +// we do +// the little "insert real insn, step & stop" trick. But we can't do that when +// the +// event is delivered by the broadcaster - since that is done on the thread that +// is +// waiting for new events, so if we needed more than one event for our handling, +// we would // stall. So instead we do it when we fetch the event off of the queue. // -StateType -Process::GetNextEvent (EventSP &event_sp) -{ - StateType state = eStateInvalid; - - if (m_listener_sp->GetNextEventForBroadcaster (this, event_sp) && event_sp) - state = Process::ProcessEventData::GetStateFromEvent (event_sp.get()); - +StateType Process::GetNextEvent(EventSP &event_sp) { + StateType state = eStateInvalid; + + if (m_listener_sp->GetEventForBroadcaster(this, event_sp, + std::chrono::seconds(0)) && + event_sp) + state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + + return state; +} + +void Process::SyncIOHandler(uint32_t iohandler_id, uint64_t timeout_msec) { + // don't sync (potentially context switch) in case where there is no process + // IO + if (!m_process_input_reader) + return; + + uint32_t new_iohandler_id = 0; + m_iohandler_sync.WaitForValueNotEqualTo( + iohandler_id, new_iohandler_id, std::chrono::milliseconds(timeout_msec)); + + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::%s waited for m_iohandler_sync to change from %u, " + "new value is %u", + __FUNCTION__, iohandler_id, new_iohandler_id); +} + +StateType Process::WaitForProcessToStop(const Timeout<std::micro> &timeout, + EventSP *event_sp_ptr, bool wait_always, + ListenerSP hijack_listener_sp, + Stream *stream, bool use_run_lock) { + // We can't just wait for a "stopped" event, because the stopped event may + // have restarted the target. + // We have to actually check each event, and in the case of a stopped event + // check the restarted flag + // on the event. + if (event_sp_ptr) + event_sp_ptr->reset(); + StateType state = GetState(); + // If we are exited or detached, we won't ever get back to any + // other valid state... + if (state == eStateDetached || state == eStateExited) return state; -} - -void -Process::SyncIOHandler (uint32_t iohandler_id, uint64_t timeout_msec) -{ - // don't sync (potentially context switch) in case where there is no process IO - if (!m_process_input_reader) - return; - TimeValue timeout = TimeValue::Now(); - timeout.OffsetWithMicroSeconds(timeout_msec*1000); - uint32_t new_iohandler_id = 0; - m_iohandler_sync.WaitForValueNotEqualTo(iohandler_id, new_iohandler_id, &timeout); + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf( + "Process::%s (timeout = %llu)", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1)); - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); + if (!wait_always && StateIsStoppedState(state, true) && + StateIsStoppedState(GetPrivateState(), true)) { if (log) - log->Printf("Process::%s waited for m_iohandler_sync to change from %u, new value is %u", __FUNCTION__, iohandler_id, new_iohandler_id); -} - -StateType -Process::WaitForProcessToStop (const TimeValue *timeout, - EventSP *event_sp_ptr, - bool wait_always, - ListenerSP hijack_listener_sp, - Stream *stream, - bool use_run_lock) -{ - // We can't just wait for a "stopped" event, because the stopped event may have restarted the target. - // We have to actually check each event, and in the case of a stopped event check the restarted flag - // on the event. - if (event_sp_ptr) - event_sp_ptr->reset(); - StateType state = GetState(); - // If we are exited or detached, we won't ever get back to any - // other valid state... - if (state == eStateDetached || state == eStateExited) - return state; - - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s (timeout = %p)", __FUNCTION__, - static_cast<const void*>(timeout)); + log->Printf("Process::%s returning without waiting for events; process " + "private and public states are already 'stopped'.", + __FUNCTION__); + // We need to toggle the run lock as this won't get done in + // SetPublicState() if the process is hijacked. + if (hijack_listener_sp && use_run_lock) + m_public_run_lock.SetStopped(); + return state; + } - if (!wait_always && - StateIsStoppedState(state, true) && - StateIsStoppedState(GetPrivateState(), true)) - { - if (log) - log->Printf("Process::%s returning without waiting for events; process private and public states are already 'stopped'.", - __FUNCTION__); + while (state != eStateInvalid) { + EventSP event_sp; + state = GetStateChangedEvents(event_sp, timeout, hijack_listener_sp); + if (event_sp_ptr && event_sp) + *event_sp_ptr = event_sp; + + bool pop_process_io_handler = (hijack_listener_sp.get() != nullptr); + Process::HandleProcessStateChangedEvent(event_sp, stream, + pop_process_io_handler); + + switch (state) { + case eStateCrashed: + case eStateDetached: + case eStateExited: + case eStateUnloaded: + // We need to toggle the run lock as this won't get done in + // SetPublicState() if the process is hijacked. + if (hijack_listener_sp && use_run_lock) + m_public_run_lock.SetStopped(); + return state; + case eStateStopped: + if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) + continue; + else { // We need to toggle the run lock as this won't get done in // SetPublicState() if the process is hijacked. if (hijack_listener_sp && use_run_lock) - m_public_run_lock.SetStopped(); + m_public_run_lock.SetStopped(); return state; + } + default: + continue; } - - while (state != eStateInvalid) - { - EventSP event_sp; - state = WaitForStateChangedEvents (timeout, event_sp, hijack_listener_sp); - if (event_sp_ptr && event_sp) - *event_sp_ptr = event_sp; - - bool pop_process_io_handler = (hijack_listener_sp.get() != nullptr); - Process::HandleProcessStateChangedEvent (event_sp, stream, pop_process_io_handler); - - switch (state) - { - case eStateCrashed: - case eStateDetached: - case eStateExited: - case eStateUnloaded: - // We need to toggle the run lock as this won't get done in - // SetPublicState() if the process is hijacked. - if (hijack_listener_sp && use_run_lock) - m_public_run_lock.SetStopped(); - return state; - case eStateStopped: - if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) - continue; - else - { - // We need to toggle the run lock as this won't get done in - // SetPublicState() if the process is hijacked. - if (hijack_listener_sp && use_run_lock) - m_public_run_lock.SetStopped(); - return state; - } - default: - continue; - } - } - return state; + } + return state; } -bool -Process::HandleProcessStateChangedEvent (const EventSP &event_sp, - Stream *stream, - bool &pop_process_io_handler) -{ - const bool handle_pop = pop_process_io_handler; - - pop_process_io_handler = false; - ProcessSP process_sp = Process::ProcessEventData::GetProcessFromEvent(event_sp.get()); +bool Process::HandleProcessStateChangedEvent(const EventSP &event_sp, + Stream *stream, + bool &pop_process_io_handler) { + const bool handle_pop = pop_process_io_handler; - if (!process_sp) - return false; + pop_process_io_handler = false; + ProcessSP process_sp = + Process::ProcessEventData::GetProcessFromEvent(event_sp.get()); - StateType event_state = Process::ProcessEventData::GetStateFromEvent (event_sp.get()); - if (event_state == eStateInvalid) - return false; - - switch (event_state) - { - case eStateInvalid: - case eStateUnloaded: - case eStateAttaching: - case eStateLaunching: - case eStateStepping: - case eStateDetached: - if (stream) - stream->Printf("Process %" PRIu64 " %s\n", - process_sp->GetID(), - StateAsCString (event_state)); - if (event_state == eStateDetached) - pop_process_io_handler = true; - break; - - case eStateConnected: - case eStateRunning: - // Don't be chatty when we run... - break; + if (!process_sp) + return false; - case eStateExited: - if (stream) - process_sp->GetStatus(*stream); - pop_process_io_handler = true; - break; + StateType event_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + if (event_state == eStateInvalid) + return false; - case eStateStopped: - case eStateCrashed: - case eStateSuspended: - // Make sure the program hasn't been auto-restarted: - if (Process::ProcessEventData::GetRestartedFromEvent (event_sp.get())) - { - if (stream) - { - size_t num_reasons = Process::ProcessEventData::GetNumRestartedReasons(event_sp.get()); - if (num_reasons > 0) - { - // FIXME: Do we want to report this, or would that just be annoyingly chatty? - if (num_reasons == 1) - { - const char *reason = Process::ProcessEventData::GetRestartedReasonAtIndex (event_sp.get(), 0); - stream->Printf ("Process %" PRIu64 " stopped and restarted: %s\n", - process_sp->GetID(), - reason ? reason : "<UNKNOWN REASON>"); - } - else - { - stream->Printf ("Process %" PRIu64 " stopped and restarted, reasons:\n", - process_sp->GetID()); - - - for (size_t i = 0; i < num_reasons; i++) - { - const char *reason = Process::ProcessEventData::GetRestartedReasonAtIndex (event_sp.get(), i); - stream->Printf("\t%s\n", reason ? reason : "<UNKNOWN REASON>"); - } - } - } - } + switch (event_state) { + case eStateInvalid: + case eStateUnloaded: + case eStateAttaching: + case eStateLaunching: + case eStateStepping: + case eStateDetached: + if (stream) + stream->Printf("Process %" PRIu64 " %s\n", process_sp->GetID(), + StateAsCString(event_state)); + if (event_state == eStateDetached) + pop_process_io_handler = true; + break; + + case eStateConnected: + case eStateRunning: + // Don't be chatty when we run... + break; + + case eStateExited: + if (stream) + process_sp->GetStatus(*stream); + pop_process_io_handler = true; + break; + + case eStateStopped: + case eStateCrashed: + case eStateSuspended: + // Make sure the program hasn't been auto-restarted: + if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) { + if (stream) { + size_t num_reasons = + Process::ProcessEventData::GetNumRestartedReasons(event_sp.get()); + if (num_reasons > 0) { + // FIXME: Do we want to report this, or would that just be annoyingly + // chatty? + if (num_reasons == 1) { + const char *reason = + Process::ProcessEventData::GetRestartedReasonAtIndex( + event_sp.get(), 0); + stream->Printf("Process %" PRIu64 " stopped and restarted: %s\n", + process_sp->GetID(), + reason ? reason : "<UNKNOWN REASON>"); + } else { + stream->Printf("Process %" PRIu64 + " stopped and restarted, reasons:\n", + process_sp->GetID()); + + for (size_t i = 0; i < num_reasons; i++) { + const char *reason = + Process::ProcessEventData::GetRestartedReasonAtIndex( + event_sp.get(), i); + stream->Printf("\t%s\n", reason ? reason : "<UNKNOWN REASON>"); + } + } + } + } + } else { + StopInfoSP curr_thread_stop_info_sp; + // Lock the thread list so it doesn't change on us, this is the scope for + // the locker: + { + ThreadList &thread_list = process_sp->GetThreadList(); + std::lock_guard<std::recursive_mutex> guard(thread_list.GetMutex()); + + ThreadSP curr_thread(thread_list.GetSelectedThread()); + ThreadSP thread; + StopReason curr_thread_stop_reason = eStopReasonInvalid; + if (curr_thread) { + curr_thread_stop_reason = curr_thread->GetStopReason(); + curr_thread_stop_info_sp = curr_thread->GetStopInfo(); + } + if (!curr_thread || !curr_thread->IsValid() || + curr_thread_stop_reason == eStopReasonInvalid || + curr_thread_stop_reason == eStopReasonNone) { + // Prefer a thread that has just completed its plan over another + // thread as current thread. + ThreadSP plan_thread; + ThreadSP other_thread; + + const size_t num_threads = thread_list.GetSize(); + size_t i; + for (i = 0; i < num_threads; ++i) { + thread = thread_list.GetThreadAtIndex(i); + StopReason thread_stop_reason = thread->GetStopReason(); + switch (thread_stop_reason) { + case eStopReasonInvalid: + case eStopReasonNone: + break; + + case eStopReasonSignal: { + // Don't select a signal thread if we weren't going to stop at + // that + // signal. We have to have had another reason for stopping here, + // and + // the user doesn't want to see this thread. + uint64_t signo = thread->GetStopInfo()->GetValue(); + if (process_sp->GetUnixSignals()->GetShouldStop(signo)) { + if (!other_thread) + other_thread = thread; + } + break; + } + case eStopReasonTrace: + case eStopReasonBreakpoint: + case eStopReasonWatchpoint: + case eStopReasonException: + case eStopReasonExec: + case eStopReasonThreadExiting: + case eStopReasonInstrumentation: + if (!other_thread) + other_thread = thread; + break; + case eStopReasonPlanComplete: + if (!plan_thread) + plan_thread = thread; + break; } + } + if (plan_thread) + thread_list.SetSelectedThreadByID(plan_thread->GetID()); + else if (other_thread) + thread_list.SetSelectedThreadByID(other_thread->GetID()); + else { + if (curr_thread && curr_thread->IsValid()) + thread = curr_thread; else - { - // Lock the thread list so it doesn't change on us, this is the scope for the locker: - { - ThreadList &thread_list = process_sp->GetThreadList(); - std::lock_guard<std::recursive_mutex> guard(thread_list.GetMutex()); - - ThreadSP curr_thread (thread_list.GetSelectedThread()); - ThreadSP thread; - StopReason curr_thread_stop_reason = eStopReasonInvalid; - if (curr_thread) - curr_thread_stop_reason = curr_thread->GetStopReason(); - if (!curr_thread || - !curr_thread->IsValid() || - curr_thread_stop_reason == eStopReasonInvalid || - curr_thread_stop_reason == eStopReasonNone) - { - // Prefer a thread that has just completed its plan over another thread as current thread. - ThreadSP plan_thread; - ThreadSP other_thread; - - const size_t num_threads = thread_list.GetSize(); - size_t i; - for (i = 0; i < num_threads; ++i) - { - thread = thread_list.GetThreadAtIndex(i); - StopReason thread_stop_reason = thread->GetStopReason(); - switch (thread_stop_reason) - { - case eStopReasonInvalid: - case eStopReasonNone: - break; - - case eStopReasonSignal: - { - // Don't select a signal thread if we weren't going to stop at that - // signal. We have to have had another reason for stopping here, and - // the user doesn't want to see this thread. - uint64_t signo = thread->GetStopInfo()->GetValue(); - if (process_sp->GetUnixSignals()->GetShouldStop(signo)) - { - if (!other_thread) - other_thread = thread; - } - break; - } - case eStopReasonTrace: - case eStopReasonBreakpoint: - case eStopReasonWatchpoint: - case eStopReasonException: - case eStopReasonExec: - case eStopReasonThreadExiting: - case eStopReasonInstrumentation: - if (!other_thread) - other_thread = thread; - break; - case eStopReasonPlanComplete: - if (!plan_thread) - plan_thread = thread; - break; - } - } - if (plan_thread) - thread_list.SetSelectedThreadByID (plan_thread->GetID()); - else if (other_thread) - thread_list.SetSelectedThreadByID (other_thread->GetID()); - else - { - if (curr_thread && curr_thread->IsValid()) - thread = curr_thread; - else - thread = thread_list.GetThreadAtIndex(0); - - if (thread) - thread_list.SetSelectedThreadByID (thread->GetID()); - } - } - } - // Drop the ThreadList mutex by here, since GetThreadStatus below might have to run code, - // e.g. for Data formatters, and if we hold the ThreadList mutex, then the process is going to - // have a hard time restarting the process. - if (stream) - { - Debugger &debugger = process_sp->GetTarget().GetDebugger(); - if (debugger.GetTargetList().GetSelectedTarget().get() == &process_sp->GetTarget()) - { - const bool only_threads_with_stop_reason = true; - const uint32_t start_frame = 0; - const uint32_t num_frames = 1; - const uint32_t num_frames_with_source = 1; - process_sp->GetStatus(*stream); - process_sp->GetThreadStatus (*stream, - only_threads_with_stop_reason, - start_frame, - num_frames, - num_frames_with_source); - } - else - { - uint32_t target_idx = debugger.GetTargetList().GetIndexOfTarget(process_sp->GetTarget().shared_from_this()); - if (target_idx != UINT32_MAX) - stream->Printf ("Target %d: (", target_idx); - else - stream->Printf ("Target <unknown index>: ("); - process_sp->GetTarget().Dump (stream, eDescriptionLevelBrief); - stream->Printf (") stopped.\n"); - } - } + thread = thread_list.GetThreadAtIndex(0); - // Pop the process IO handler - pop_process_io_handler = true; + if (thread) + thread_list.SetSelectedThreadByID(thread->GetID()); + } + } + } + // Drop the ThreadList mutex by here, since GetThreadStatus below might + // have to run code, + // e.g. for Data formatters, and if we hold the ThreadList mutex, then the + // process is going to + // have a hard time restarting the process. + if (stream) { + Debugger &debugger = process_sp->GetTarget().GetDebugger(); + if (debugger.GetTargetList().GetSelectedTarget().get() == + &process_sp->GetTarget()) { + const bool only_threads_with_stop_reason = true; + const uint32_t start_frame = 0; + const uint32_t num_frames = 1; + const uint32_t num_frames_with_source = 1; + const bool stop_format = true; + process_sp->GetStatus(*stream); + process_sp->GetThreadStatus(*stream, only_threads_with_stop_reason, + start_frame, num_frames, + num_frames_with_source, + stop_format); + if (curr_thread_stop_info_sp) { + lldb::addr_t crashing_address; + ValueObjectSP valobj_sp = StopInfo::GetCrashingDereference( + curr_thread_stop_info_sp, &crashing_address); + if (valobj_sp) { + const bool qualify_cxx_base_classes = false; + + const ValueObject::GetExpressionPathFormat format = + ValueObject::GetExpressionPathFormat:: + eGetExpressionPathFormatHonorPointers; + stream->PutCString("Likely cause: "); + valobj_sp->GetExpressionPath(*stream, qualify_cxx_base_classes, + format); + stream->Printf(" accessed 0x%" PRIx64 "\n", crashing_address); } - break; + } + } else { + uint32_t target_idx = debugger.GetTargetList().GetIndexOfTarget( + process_sp->GetTarget().shared_from_this()); + if (target_idx != UINT32_MAX) + stream->Printf("Target %d: (", target_idx); + else + stream->Printf("Target <unknown index>: ("); + process_sp->GetTarget().Dump(stream, eDescriptionLevelBrief); + stream->Printf(") stopped.\n"); + } + } + + // Pop the process IO handler + pop_process_io_handler = true; } + break; + } - if (handle_pop && pop_process_io_handler) - process_sp->PopProcessIOHandler(); + if (handle_pop && pop_process_io_handler) + process_sp->PopProcessIOHandler(); - return true; + return true; } -StateType -Process::WaitForState(const TimeValue *timeout, - const StateType *match_states, - const uint32_t num_match_states) -{ - EventSP event_sp; - StateType state = GetState(); - while (state != eStateInvalid) - { - // If we are exited or detached, we won't ever get back to any - // other valid state... - if (state == eStateDetached || state == eStateExited) - return state; - - state = WaitForStateChangedEvents(timeout, event_sp, nullptr); - - for (uint32_t i = 0; i < num_match_states; ++i) - { - if (match_states[i] == state) - return state; - } - } - return state; +bool Process::HijackProcessEvents(ListenerSP listener_sp) { + if (listener_sp) { + return HijackBroadcaster(listener_sp, eBroadcastBitStateChanged | + eBroadcastBitInterrupt); + } else + return false; } -bool -Process::HijackProcessEvents (ListenerSP listener_sp) -{ - if (listener_sp) - { - return HijackBroadcaster(listener_sp, eBroadcastBitStateChanged | eBroadcastBitInterrupt); - } - else - return false; -} +void Process::RestoreProcessEvents() { RestoreBroadcaster(); } -void -Process::RestoreProcessEvents () -{ - RestoreBroadcaster(); -} +StateType Process::GetStateChangedEvents(EventSP &event_sp, + const Timeout<std::micro> &timeout, + ListenerSP hijack_listener_sp) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); -StateType -Process::WaitForStateChangedEvents (const TimeValue *timeout, EventSP &event_sp, ListenerSP hijack_listener_sp) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf( + "Process::%s (timeout = %llu, event_sp)...", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1)); - if (log) - log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, - static_cast<const void*>(timeout)); - - ListenerSP listener_sp = hijack_listener_sp; - if (!listener_sp) - listener_sp = m_listener_sp; - - StateType state = eStateInvalid; - if (listener_sp->WaitForEventForBroadcasterWithType (timeout, - this, - eBroadcastBitStateChanged | eBroadcastBitInterrupt, - event_sp)) - { - if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged) - state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - else if (log) - log->Printf ("Process::%s got no event or was interrupted.", __FUNCTION__); - } + ListenerSP listener_sp = hijack_listener_sp; + if (!listener_sp) + listener_sp = m_listener_sp; - if (log) - log->Printf ("Process::%s (timeout = %p, event_sp) => %s", - __FUNCTION__, static_cast<const void*>(timeout), - StateAsCString(state)); - return state; + StateType state = eStateInvalid; + if (listener_sp->GetEventForBroadcasterWithType( + this, eBroadcastBitStateChanged | eBroadcastBitInterrupt, event_sp, + timeout)) { + if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged) + state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + else if (log) + log->Printf("Process::%s got no event or was interrupted.", __FUNCTION__); + } + + if (log) + log->Printf( + "Process::%s (timeout = %llu, event_sp) => %s", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1), + StateAsCString(state)); + return state; } -Event * -Process::PeekAtStateChangedEvents () -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); +Event *Process::PeekAtStateChangedEvents() { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s...", __FUNCTION__); + if (log) + log->Printf("Process::%s...", __FUNCTION__); - Event *event_ptr; - event_ptr = m_listener_sp->PeekAtNextEventForBroadcasterWithType (this, - eBroadcastBitStateChanged); - if (log) - { - if (event_ptr) - { - log->Printf ("Process::%s (event_ptr) => %s", - __FUNCTION__, - StateAsCString(ProcessEventData::GetStateFromEvent (event_ptr))); - } - else - { - log->Printf ("Process::%s no events found", - __FUNCTION__); - } + Event *event_ptr; + event_ptr = m_listener_sp->PeekAtNextEventForBroadcasterWithType( + this, eBroadcastBitStateChanged); + if (log) { + if (event_ptr) { + log->Printf( + "Process::%s (event_ptr) => %s", __FUNCTION__, + StateAsCString(ProcessEventData::GetStateFromEvent(event_ptr))); + } else { + log->Printf("Process::%s no events found", __FUNCTION__); } - return event_ptr; + } + return event_ptr; } StateType -Process::WaitForStateChangedEventsPrivate (const TimeValue *timeout, EventSP &event_sp) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); +Process::GetStateChangedEventsPrivate(EventSP &event_sp, + const Timeout<std::micro> &timeout) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, - static_cast<const void*>(timeout)); - - StateType state = eStateInvalid; - if (m_private_state_listener_sp->WaitForEventForBroadcasterWithType (timeout, - &m_private_state_broadcaster, - eBroadcastBitStateChanged | eBroadcastBitInterrupt, - event_sp)) - if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged) - state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - - // This is a bit of a hack, but when we wait here we could very well return - // to the command-line, and that could disable the log, which would render the - // log we got above invalid. - if (log) - log->Printf ("Process::%s (timeout = %p, event_sp) => %s", - __FUNCTION__, static_cast<const void *>(timeout), - state == eStateInvalid ? "TIMEOUT" : StateAsCString(state)); - return state; + if (log) + log->Printf( + "Process::%s (timeout = %llu, event_sp)...", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1)); + + StateType state = eStateInvalid; + if (m_private_state_listener_sp->GetEventForBroadcasterWithType( + &m_private_state_broadcaster, + eBroadcastBitStateChanged | eBroadcastBitInterrupt, event_sp, + timeout)) + if (event_sp && event_sp->GetType() == eBroadcastBitStateChanged) + state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + + // This is a bit of a hack, but when we wait here we could very well return + // to the command-line, and that could disable the log, which would render the + // log we got above invalid. + if (log) + log->Printf( + "Process::%s (timeout = %llu, event_sp) => %s", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1), + state == eStateInvalid ? "TIMEOUT" : StateAsCString(state)); + return state; } -bool -Process::WaitForEventsPrivate (const TimeValue *timeout, EventSP &event_sp, bool control_only) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); +bool Process::GetEventsPrivate(EventSP &event_sp, + const Timeout<std::micro> &timeout, + bool control_only) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, - static_cast<const void*>(timeout)); + if (log) + log->Printf( + "Process::%s (timeout = %llu, event_sp)...", __FUNCTION__, + static_cast<unsigned long long>(timeout ? timeout->count() : -1)); - if (control_only) - return m_private_state_listener_sp->WaitForEventForBroadcaster(timeout, &m_private_state_control_broadcaster, event_sp); - else - return m_private_state_listener_sp->WaitForEvent(timeout, event_sp); + if (control_only) + return m_private_state_listener_sp->GetEventForBroadcaster( + &m_private_state_control_broadcaster, event_sp, timeout); + else + return m_private_state_listener_sp->GetEvent(event_sp, timeout); } -bool -Process::IsRunning () const -{ - return StateIsRunningState (m_public_state.GetValue()); +bool Process::IsRunning() const { + return StateIsRunningState(m_public_state.GetValue()); } -int -Process::GetExitStatus () -{ - std::lock_guard<std::mutex> guard(m_exit_status_mutex); +int Process::GetExitStatus() { + std::lock_guard<std::mutex> guard(m_exit_status_mutex); - if (m_public_state.GetValue() == eStateExited) - return m_exit_status; - return -1; + if (m_public_state.GetValue() == eStateExited) + return m_exit_status; + return -1; } -const char * -Process::GetExitDescription () -{ - std::lock_guard<std::mutex> guard(m_exit_status_mutex); +const char *Process::GetExitDescription() { + std::lock_guard<std::mutex> guard(m_exit_status_mutex); - if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty()) - return m_exit_string.c_str(); - return nullptr; + if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty()) + return m_exit_string.c_str(); + return nullptr; } -bool -Process::SetExitStatus (int status, const char *cstr) -{ - // Use a mutex to protect setting the exit status. - std::lock_guard<std::mutex> guard(m_exit_status_mutex); +bool Process::SetExitStatus(int status, const char *cstr) { + // Use a mutex to protect setting the exit status. + std::lock_guard<std::mutex> guard(m_exit_status_mutex); - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf( + "Process::SetExitStatus (status=%i (0x%8.8x), description=%s%s%s)", + status, status, cstr ? "\"" : "", cstr ? cstr : "NULL", + cstr ? "\"" : ""); + + // We were already in the exited state + if (m_private_state.GetValue() == eStateExited) { if (log) - log->Printf("Process::SetExitStatus (status=%i (0x%8.8x), description=%s%s%s)", - status, status, - cstr ? "\"" : "", - cstr ? cstr : "NULL", - cstr ? "\"" : ""); - - // We were already in the exited state - if (m_private_state.GetValue() == eStateExited) - { - if (log) - log->Printf("Process::SetExitStatus () ignoring exit status because state was already set to eStateExited"); - return false; - } + log->Printf("Process::SetExitStatus () ignoring exit status because " + "state was already set to eStateExited"); + return false; + } - m_exit_status = status; - if (cstr) - m_exit_string = cstr; - else - m_exit_string.clear(); + m_exit_status = status; + if (cstr) + m_exit_string = cstr; + else + m_exit_string.clear(); - // Clear the last natural stop ID since it has a strong - // reference to this process - m_mod_id.SetStopEventForLastNaturalStopID(EventSP()); + // Clear the last natural stop ID since it has a strong + // reference to this process + m_mod_id.SetStopEventForLastNaturalStopID(EventSP()); - SetPrivateState (eStateExited); + SetPrivateState(eStateExited); - // Allow subclasses to do some cleanup - DidExit (); + // Allow subclasses to do some cleanup + DidExit(); - return true; + return true; } -bool -Process::IsAlive () -{ - switch (m_private_state.GetValue()) - { - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - case eStateStopped: - case eStateRunning: - case eStateStepping: - case eStateCrashed: - case eStateSuspended: - return true; - default: - return false; - } +bool Process::IsAlive() { + switch (m_private_state.GetValue()) { + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + case eStateStopped: + case eStateRunning: + case eStateStepping: + case eStateCrashed: + case eStateSuspended: + return true; + default: + return false; + } } // This static callback can be used to watch for local child processes on // the current host. The child process exits, the process will be // found in the global target list (we want to be completely sure that the // lldb_private::Process doesn't go away before we can deliver the signal. -bool -Process::SetProcessExitStatus(lldb::pid_t pid, bool exited, - int signo, // Zero for no signal - int exit_status // Exit value of process if signal is zero - ) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::SetProcessExitStatus (pid=%" PRIu64 ", exited=%i, signal=%i, exit_status=%i)\n", pid, - exited, signo, exit_status); - - if (exited) - { - TargetSP target_sp(Debugger::FindTargetWithProcessID (pid)); - if (target_sp) - { - ProcessSP process_sp (target_sp->GetProcessSP()); - if (process_sp) - { - const char *signal_cstr = nullptr; - if (signo) - signal_cstr = process_sp->GetUnixSignals()->GetSignalAsCString(signo); - - process_sp->SetExitStatus (exit_status, signal_cstr); - } - } - return true; +bool Process::SetProcessExitStatus( + lldb::pid_t pid, bool exited, + int signo, // Zero for no signal + int exit_status // Exit value of process if signal is zero + ) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::SetProcessExitStatus (pid=%" PRIu64 + ", exited=%i, signal=%i, exit_status=%i)\n", + pid, exited, signo, exit_status); + + if (exited) { + TargetSP target_sp(Debugger::FindTargetWithProcessID(pid)); + if (target_sp) { + ProcessSP process_sp(target_sp->GetProcessSP()); + if (process_sp) { + const char *signal_cstr = nullptr; + if (signo) + signal_cstr = process_sp->GetUnixSignals()->GetSignalAsCString(signo); + + process_sp->SetExitStatus(exit_status, signal_cstr); + } } - return false; -} - -void -Process::UpdateThreadListIfNeeded () -{ - const uint32_t stop_id = GetStopID(); - if (m_thread_list.GetSize(false) == 0 || stop_id != m_thread_list.GetStopID()) - { - const StateType state = GetPrivateState(); - if (StateIsStoppedState (state, true)) - { - std::lock_guard<std::recursive_mutex> guard(m_thread_list.GetMutex()); - // m_thread_list does have its own mutex, but we need to - // hold onto the mutex between the call to UpdateThreadList(...) - // and the os->UpdateThreadList(...) so it doesn't change on us - ThreadList &old_thread_list = m_thread_list; - ThreadList real_thread_list(this); - ThreadList new_thread_list(this); - // Always update the thread list with the protocol specific - // thread list, but only update if "true" is returned - if (UpdateThreadList (m_thread_list_real, real_thread_list)) - { - // Don't call into the OperatingSystem to update the thread list if we are shutting down, since - // that may call back into the SBAPI's, requiring the API lock which is already held by whoever is - // shutting us down, causing a deadlock. - OperatingSystem *os = GetOperatingSystem (); - if (os && !m_destroy_in_process) - { - // Clear any old backing threads where memory threads might have been - // backed by actual threads from the lldb_private::Process subclass - size_t num_old_threads = old_thread_list.GetSize(false); - for (size_t i = 0; i < num_old_threads; ++i) - old_thread_list.GetThreadAtIndex(i, false)->ClearBackingThread(); - - // Turn off dynamic types to ensure we don't run any expressions. Objective C - // can run an expression to determine if a SBValue is a dynamic type or not - // and we need to avoid this. OperatingSystem plug-ins can't run expressions - // that require running code... - - Target &target = GetTarget(); - const lldb::DynamicValueType saved_prefer_dynamic = target.GetPreferDynamicValue (); - if (saved_prefer_dynamic != lldb::eNoDynamicValues) - target.SetPreferDynamicValue(lldb::eNoDynamicValues); - - // Now let the OperatingSystem plug-in update the thread list - - os->UpdateThreadList (old_thread_list, // Old list full of threads created by OS plug-in - real_thread_list, // The actual thread list full of threads created by each lldb_private::Process subclass - new_thread_list); // The new thread list that we will show to the user that gets filled in - - if (saved_prefer_dynamic != lldb::eNoDynamicValues) - target.SetPreferDynamicValue(saved_prefer_dynamic); - } - else - { - // No OS plug-in, the new thread list is the same as the real thread list - new_thread_list = real_thread_list; - } - - m_thread_list_real.Update(real_thread_list); - m_thread_list.Update (new_thread_list); - m_thread_list.SetStopID (stop_id); - - if (GetLastNaturalStopID () != m_extended_thread_stop_id) - { - // Clear any extended threads that we may have accumulated previously - m_extended_thread_list.Clear(); - m_extended_thread_stop_id = GetLastNaturalStopID (); - - m_queue_list.Clear(); - m_queue_list_stop_id = GetLastNaturalStopID (); - } - } - } - } -} - -void -Process::UpdateQueueListIfNeeded () -{ - if (m_system_runtime_ap) - { - if (m_queue_list.GetSize() == 0 || m_queue_list_stop_id != GetLastNaturalStopID()) - { - const StateType state = GetPrivateState(); - if (StateIsStoppedState (state, true)) - { - m_system_runtime_ap->PopulateQueueList (m_queue_list); - m_queue_list_stop_id = GetLastNaturalStopID(); - } + return true; + } + return false; +} + +void Process::UpdateThreadListIfNeeded() { + const uint32_t stop_id = GetStopID(); + if (m_thread_list.GetSize(false) == 0 || + stop_id != m_thread_list.GetStopID()) { + const StateType state = GetPrivateState(); + if (StateIsStoppedState(state, true)) { + std::lock_guard<std::recursive_mutex> guard(m_thread_list.GetMutex()); + // m_thread_list does have its own mutex, but we need to + // hold onto the mutex between the call to UpdateThreadList(...) + // and the os->UpdateThreadList(...) so it doesn't change on us + ThreadList &old_thread_list = m_thread_list; + ThreadList real_thread_list(this); + ThreadList new_thread_list(this); + // Always update the thread list with the protocol specific + // thread list, but only update if "true" is returned + if (UpdateThreadList(m_thread_list_real, real_thread_list)) { + // Don't call into the OperatingSystem to update the thread list if we + // are shutting down, since + // that may call back into the SBAPI's, requiring the API lock which is + // already held by whoever is + // shutting us down, causing a deadlock. + OperatingSystem *os = GetOperatingSystem(); + if (os && !m_destroy_in_process) { + // Clear any old backing threads where memory threads might have been + // backed by actual threads from the lldb_private::Process subclass + size_t num_old_threads = old_thread_list.GetSize(false); + for (size_t i = 0; i < num_old_threads; ++i) + old_thread_list.GetThreadAtIndex(i, false)->ClearBackingThread(); + + // Turn off dynamic types to ensure we don't run any expressions. + // Objective C + // can run an expression to determine if a SBValue is a dynamic type + // or not + // and we need to avoid this. OperatingSystem plug-ins can't run + // expressions + // that require running code... + + Target &target = GetTarget(); + const lldb::DynamicValueType saved_prefer_dynamic = + target.GetPreferDynamicValue(); + if (saved_prefer_dynamic != lldb::eNoDynamicValues) + target.SetPreferDynamicValue(lldb::eNoDynamicValues); + + // Now let the OperatingSystem plug-in update the thread list + + os->UpdateThreadList( + old_thread_list, // Old list full of threads created by OS plug-in + real_thread_list, // The actual thread list full of threads + // created by each lldb_private::Process + // subclass + new_thread_list); // The new thread list that we will show to the + // user that gets filled in + + if (saved_prefer_dynamic != lldb::eNoDynamicValues) + target.SetPreferDynamicValue(saved_prefer_dynamic); + } else { + // No OS plug-in, the new thread list is the same as the real thread + // list + new_thread_list = real_thread_list; } - } -} -ThreadSP -Process::CreateOSPluginThread (lldb::tid_t tid, lldb::addr_t context) -{ - OperatingSystem *os = GetOperatingSystem (); - if (os) - return os->CreateThread(tid, context); - return ThreadSP(); -} + m_thread_list_real.Update(real_thread_list); + m_thread_list.Update(new_thread_list); + m_thread_list.SetStopID(stop_id); -uint32_t -Process::GetNextThreadIndexID (uint64_t thread_id) -{ - return AssignIndexIDToThread(thread_id); -} + if (GetLastNaturalStopID() != m_extended_thread_stop_id) { + // Clear any extended threads that we may have accumulated previously + m_extended_thread_list.Clear(); + m_extended_thread_stop_id = GetLastNaturalStopID(); -bool -Process::HasAssignedIndexIDToThread(uint64_t thread_id) -{ - return (m_thread_id_to_index_id_map.find(thread_id) != m_thread_id_to_index_id_map.end()); -} - -uint32_t -Process::AssignIndexIDToThread(uint64_t thread_id) -{ - uint32_t result = 0; - std::map<uint64_t, uint32_t>::iterator iterator = m_thread_id_to_index_id_map.find(thread_id); - if (iterator == m_thread_id_to_index_id_map.end()) - { - result = ++m_thread_index_id; - m_thread_id_to_index_id_map[thread_id] = result; - } - else - { - result = iterator->second; - } - - return result; -} - -StateType -Process::GetState() -{ - // If any other threads access this we will need a mutex for it - return m_public_state.GetValue (); -} - -bool -Process::StateChangedIsExternallyHijacked() -{ - if (IsHijackedForEvent(eBroadcastBitStateChanged)) - { - const char *hijacking_name = GetHijackingListenerName(); - if (hijacking_name && strcmp(hijacking_name, "lldb.Process.ResumeSynchronous.hijack")) - return true; - } - return false; -} - -void -Process::SetPublicState (StateType new_state, bool restarted) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::SetPublicState (state = %s, restarted = %i)", StateAsCString(new_state), restarted); - const StateType old_state = m_public_state.GetValue(); - m_public_state.SetValue (new_state); - - // On the transition from Run to Stopped, we unlock the writer end of the - // run lock. The lock gets locked in Resume, which is the public API - // to tell the program to run. - if (!StateChangedIsExternallyHijacked()) - { - if (new_state == eStateDetached) - { - if (log) - log->Printf("Process::SetPublicState (%s) -- unlocking run lock for detach", StateAsCString(new_state)); - m_public_run_lock.SetStopped(); + m_queue_list.Clear(); + m_queue_list_stop_id = GetLastNaturalStopID(); } - else - { - const bool old_state_is_stopped = StateIsStoppedState(old_state, false); - const bool new_state_is_stopped = StateIsStoppedState(new_state, false); - if ((old_state_is_stopped != new_state_is_stopped)) - { - if (new_state_is_stopped && !restarted) - { - if (log) - log->Printf("Process::SetPublicState (%s) -- unlocking run lock", StateAsCString(new_state)); - m_public_run_lock.SetStopped(); - } - } + } + } + } +} + +void Process::UpdateQueueListIfNeeded() { + if (m_system_runtime_ap) { + if (m_queue_list.GetSize() == 0 || + m_queue_list_stop_id != GetLastNaturalStopID()) { + const StateType state = GetPrivateState(); + if (StateIsStoppedState(state, true)) { + m_system_runtime_ap->PopulateQueueList(m_queue_list); + m_queue_list_stop_id = GetLastNaturalStopID(); + } + } + } +} + +ThreadSP Process::CreateOSPluginThread(lldb::tid_t tid, lldb::addr_t context) { + OperatingSystem *os = GetOperatingSystem(); + if (os) + return os->CreateThread(tid, context); + return ThreadSP(); +} + +uint32_t Process::GetNextThreadIndexID(uint64_t thread_id) { + return AssignIndexIDToThread(thread_id); +} + +bool Process::HasAssignedIndexIDToThread(uint64_t thread_id) { + return (m_thread_id_to_index_id_map.find(thread_id) != + m_thread_id_to_index_id_map.end()); +} + +uint32_t Process::AssignIndexIDToThread(uint64_t thread_id) { + uint32_t result = 0; + std::map<uint64_t, uint32_t>::iterator iterator = + m_thread_id_to_index_id_map.find(thread_id); + if (iterator == m_thread_id_to_index_id_map.end()) { + result = ++m_thread_index_id; + m_thread_id_to_index_id_map[thread_id] = result; + } else { + result = iterator->second; + } + + return result; +} + +StateType Process::GetState() { + // If any other threads access this we will need a mutex for it + return m_public_state.GetValue(); +} + +bool Process::StateChangedIsExternallyHijacked() { + if (IsHijackedForEvent(eBroadcastBitStateChanged)) { + const char *hijacking_name = GetHijackingListenerName(); + if (hijacking_name && + strcmp(hijacking_name, "lldb.Process.ResumeSynchronous.hijack")) + return true; + } + return false; +} + +void Process::SetPublicState(StateType new_state, bool restarted) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::SetPublicState (state = %s, restarted = %i)", + StateAsCString(new_state), restarted); + const StateType old_state = m_public_state.GetValue(); + m_public_state.SetValue(new_state); + + // On the transition from Run to Stopped, we unlock the writer end of the + // run lock. The lock gets locked in Resume, which is the public API + // to tell the program to run. + if (!StateChangedIsExternallyHijacked()) { + if (new_state == eStateDetached) { + if (log) + log->Printf( + "Process::SetPublicState (%s) -- unlocking run lock for detach", + StateAsCString(new_state)); + m_public_run_lock.SetStopped(); + } else { + const bool old_state_is_stopped = StateIsStoppedState(old_state, false); + const bool new_state_is_stopped = StateIsStoppedState(new_state, false); + if ((old_state_is_stopped != new_state_is_stopped)) { + if (new_state_is_stopped && !restarted) { + if (log) + log->Printf("Process::SetPublicState (%s) -- unlocking run lock", + StateAsCString(new_state)); + m_public_run_lock.SetStopped(); } + } } + } } -Error -Process::Resume () -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); +Error Process::Resume() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::Resume -- locking run lock"); + if (!m_public_run_lock.TrySetRunning()) { + Error error("Resume request failed - process still running."); if (log) - log->Printf("Process::Resume -- locking run lock"); - if (!m_public_run_lock.TrySetRunning()) - { - Error error("Resume request failed - process still running."); - if (log) - log->Printf ("Process::Resume: -- TrySetRunning failed, not resuming."); - return error; - } - return PrivateResume(); + log->Printf("Process::Resume: -- TrySetRunning failed, not resuming."); + return error; + } + return PrivateResume(); } -Error -Process::ResumeSynchronous (Stream *stream) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); +Error Process::ResumeSynchronous(Stream *stream) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::ResumeSynchronous -- locking run lock"); + if (!m_public_run_lock.TrySetRunning()) { + Error error("Resume request failed - process still running."); if (log) - log->Printf("Process::ResumeSynchronous -- locking run lock"); - if (!m_public_run_lock.TrySetRunning()) - { - Error error("Resume request failed - process still running."); - if (log) - log->Printf ("Process::Resume: -- TrySetRunning failed, not resuming."); - return error; - } - - ListenerSP listener_sp (Listener::MakeListener("lldb.Process.ResumeSynchronous.hijack")); - HijackProcessEvents(listener_sp); + log->Printf("Process::Resume: -- TrySetRunning failed, not resuming."); + return error; + } - Error error = PrivateResume(); - if (error.Success()) - { - StateType state = WaitForProcessToStop (NULL, NULL, true, listener_sp, stream); - const bool must_be_alive = false; // eStateExited is ok, so this must be false - if (!StateIsStoppedState(state, must_be_alive)) - error.SetErrorStringWithFormat("process not in stopped state after synchronous resume: %s", StateAsCString(state)); - } + ListenerSP listener_sp( + Listener::MakeListener("lldb.Process.ResumeSynchronous.hijack")); + HijackProcessEvents(listener_sp); - // Undo the hijacking of process events... - RestoreProcessEvents(); + Error error = PrivateResume(); + if (error.Success()) { + StateType state = + WaitForProcessToStop(llvm::None, NULL, true, listener_sp, stream); + const bool must_be_alive = + false; // eStateExited is ok, so this must be false + if (!StateIsStoppedState(state, must_be_alive)) + error.SetErrorStringWithFormat( + "process not in stopped state after synchronous resume: %s", + StateAsCString(state)); + } - return error; -} + // Undo the hijacking of process events... + RestoreProcessEvents(); -StateType -Process::GetPrivateState () -{ - return m_private_state.GetValue(); + return error; } -void -Process::SetPrivateState (StateType new_state) -{ - if (m_finalize_called) - return; - - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE | LIBLLDB_LOG_PROCESS)); - bool state_changed = false; +StateType Process::GetPrivateState() { return m_private_state.GetValue(); } - if (log) - log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state)); +void Process::SetPrivateState(StateType new_state) { + if (m_finalize_called) + return; - std::lock_guard<std::recursive_mutex> thread_guard(m_thread_list.GetMutex()); - std::lock_guard<std::recursive_mutex> guard(m_private_state.GetMutex()); + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STATE | + LIBLLDB_LOG_PROCESS)); + bool state_changed = false; - const StateType old_state = m_private_state.GetValueNoLock (); - state_changed = old_state != new_state; + if (log) + log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state)); - const bool old_state_is_stopped = StateIsStoppedState(old_state, false); - const bool new_state_is_stopped = StateIsStoppedState(new_state, false); - if (old_state_is_stopped != new_state_is_stopped) - { - if (new_state_is_stopped) - m_private_run_lock.SetStopped(); - else - m_private_run_lock.SetRunning(); - } + std::lock_guard<std::recursive_mutex> thread_guard(m_thread_list.GetMutex()); + std::lock_guard<std::recursive_mutex> guard(m_private_state.GetMutex()); - if (state_changed) - { - m_private_state.SetValueNoLock (new_state); - EventSP event_sp (new Event (eBroadcastBitStateChanged, new ProcessEventData (shared_from_this(), new_state))); - if (StateIsStoppedState(new_state, false)) - { - // Note, this currently assumes that all threads in the list - // stop when the process stops. In the future we will want to - // support a debugging model where some threads continue to run - // while others are stopped. When that happens we will either need - // a way for the thread list to identify which threads are stopping - // or create a special thread list containing only threads which - // actually stopped. - // - // The process plugin is responsible for managing the actual - // behavior of the threads and should have stopped any threads - // that are going to stop before we get here. - m_thread_list.DidStop(); - - m_mod_id.BumpStopID(); - if (!m_mod_id.IsLastResumeForUserExpression()) - m_mod_id.SetStopEventForLastNaturalStopID(event_sp); - m_memory_cache.Clear(); - if (log) - log->Printf("Process::SetPrivateState (%s) stop_id = %u", StateAsCString(new_state), m_mod_id.GetStopID()); - } + const StateType old_state = m_private_state.GetValueNoLock(); + state_changed = old_state != new_state; - // Use our target to get a shared pointer to ourselves... - if (m_finalize_called && !PrivateStateThreadIsValid()) - BroadcastEvent (event_sp); - else - m_private_state_broadcaster.BroadcastEvent (event_sp); - } + const bool old_state_is_stopped = StateIsStoppedState(old_state, false); + const bool new_state_is_stopped = StateIsStoppedState(new_state, false); + if (old_state_is_stopped != new_state_is_stopped) { + if (new_state_is_stopped) + m_private_run_lock.SetStopped(); else - { - if (log) - log->Printf("Process::SetPrivateState (%s) state didn't change. Ignoring...", StateAsCString(new_state)); - } + m_private_run_lock.SetRunning(); + } + + if (state_changed) { + m_private_state.SetValueNoLock(new_state); + EventSP event_sp( + new Event(eBroadcastBitStateChanged, + new ProcessEventData(shared_from_this(), new_state))); + if (StateIsStoppedState(new_state, false)) { + // Note, this currently assumes that all threads in the list + // stop when the process stops. In the future we will want to + // support a debugging model where some threads continue to run + // while others are stopped. When that happens we will either need + // a way for the thread list to identify which threads are stopping + // or create a special thread list containing only threads which + // actually stopped. + // + // The process plugin is responsible for managing the actual + // behavior of the threads and should have stopped any threads + // that are going to stop before we get here. + m_thread_list.DidStop(); + + m_mod_id.BumpStopID(); + if (!m_mod_id.IsLastResumeForUserExpression()) + m_mod_id.SetStopEventForLastNaturalStopID(event_sp); + m_memory_cache.Clear(); + if (log) + log->Printf("Process::SetPrivateState (%s) stop_id = %u", + StateAsCString(new_state), m_mod_id.GetStopID()); + } + + // Use our target to get a shared pointer to ourselves... + if (m_finalize_called && !PrivateStateThreadIsValid()) + BroadcastEvent(event_sp); + else + m_private_state_broadcaster.BroadcastEvent(event_sp); + } else { + if (log) + log->Printf( + "Process::SetPrivateState (%s) state didn't change. Ignoring...", + StateAsCString(new_state)); + } } -void -Process::SetRunningUserExpression (bool on) -{ - m_mod_id.SetRunningUserExpression (on); +void Process::SetRunningUserExpression(bool on) { + m_mod_id.SetRunningUserExpression(on); } -addr_t -Process::GetImageInfoAddress() -{ - return LLDB_INVALID_ADDRESS; -} +addr_t Process::GetImageInfoAddress() { return LLDB_INVALID_ADDRESS; } -const lldb::ABISP & -Process::GetABI() -{ - if (!m_abi_sp) - m_abi_sp = ABI::FindPlugin(GetTarget().GetArchitecture()); - return m_abi_sp; +const lldb::ABISP &Process::GetABI() { + if (!m_abi_sp) + m_abi_sp = ABI::FindPlugin(GetTarget().GetArchitecture()); + return m_abi_sp; } -LanguageRuntime * -Process::GetLanguageRuntime(lldb::LanguageType language, bool retry_if_null) -{ - if (m_finalizing) - return nullptr; +LanguageRuntime *Process::GetLanguageRuntime(lldb::LanguageType language, + bool retry_if_null) { + if (m_finalizing) + return nullptr; - LanguageRuntimeCollection::iterator pos; - pos = m_language_runtimes.find (language); - if (pos == m_language_runtimes.end() || (retry_if_null && !(*pos).second)) - { - lldb::LanguageRuntimeSP runtime_sp(LanguageRuntime::FindPlugin(this, language)); - - m_language_runtimes[language] = runtime_sp; - return runtime_sp.get(); - } - else - return (*pos).second.get(); + LanguageRuntimeCollection::iterator pos; + pos = m_language_runtimes.find(language); + if (pos == m_language_runtimes.end() || (retry_if_null && !(*pos).second)) { + lldb::LanguageRuntimeSP runtime_sp( + LanguageRuntime::FindPlugin(this, language)); + + m_language_runtimes[language] = runtime_sp; + return runtime_sp.get(); + } else + return (*pos).second.get(); } -CPPLanguageRuntime * -Process::GetCPPLanguageRuntime (bool retry_if_null) -{ - LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus, retry_if_null); - if (runtime != nullptr && runtime->GetLanguageType() == eLanguageTypeC_plus_plus) - return static_cast<CPPLanguageRuntime *> (runtime); - return nullptr; +CPPLanguageRuntime *Process::GetCPPLanguageRuntime(bool retry_if_null) { + LanguageRuntime *runtime = + GetLanguageRuntime(eLanguageTypeC_plus_plus, retry_if_null); + if (runtime != nullptr && + runtime->GetLanguageType() == eLanguageTypeC_plus_plus) + return static_cast<CPPLanguageRuntime *>(runtime); + return nullptr; } -ObjCLanguageRuntime * -Process::GetObjCLanguageRuntime (bool retry_if_null) -{ - LanguageRuntime *runtime = GetLanguageRuntime(eLanguageTypeObjC, retry_if_null); - if (runtime != nullptr && runtime->GetLanguageType() == eLanguageTypeObjC) - return static_cast<ObjCLanguageRuntime *> (runtime); - return nullptr; +ObjCLanguageRuntime *Process::GetObjCLanguageRuntime(bool retry_if_null) { + LanguageRuntime *runtime = + GetLanguageRuntime(eLanguageTypeObjC, retry_if_null); + if (runtime != nullptr && runtime->GetLanguageType() == eLanguageTypeObjC) + return static_cast<ObjCLanguageRuntime *>(runtime); + return nullptr; } -bool -Process::IsPossibleDynamicValue (ValueObject& in_value) -{ - if (m_finalizing) - return false; +bool Process::IsPossibleDynamicValue(ValueObject &in_value) { + if (m_finalizing) + return false; - if (in_value.IsDynamic()) - return false; - LanguageType known_type = in_value.GetObjectRuntimeLanguage(); + if (in_value.IsDynamic()) + return false; + LanguageType known_type = in_value.GetObjectRuntimeLanguage(); - if (known_type != eLanguageTypeUnknown && known_type != eLanguageTypeC) - { - LanguageRuntime *runtime = GetLanguageRuntime (known_type); - return runtime ? runtime->CouldHaveDynamicValue(in_value) : false; - } + if (known_type != eLanguageTypeUnknown && known_type != eLanguageTypeC) { + LanguageRuntime *runtime = GetLanguageRuntime(known_type); + return runtime ? runtime->CouldHaveDynamicValue(in_value) : false; + } - LanguageRuntime *cpp_runtime = GetLanguageRuntime (eLanguageTypeC_plus_plus); - if (cpp_runtime && cpp_runtime->CouldHaveDynamicValue(in_value)) - return true; - - LanguageRuntime *objc_runtime = GetLanguageRuntime (eLanguageTypeObjC); - return objc_runtime ? objc_runtime->CouldHaveDynamicValue(in_value) : false; -} + LanguageRuntime *cpp_runtime = GetLanguageRuntime(eLanguageTypeC_plus_plus); + if (cpp_runtime && cpp_runtime->CouldHaveDynamicValue(in_value)) + return true; -void -Process::SetDynamicCheckers(DynamicCheckerFunctions *dynamic_checkers) -{ - m_dynamic_checkers_ap.reset(dynamic_checkers); + LanguageRuntime *objc_runtime = GetLanguageRuntime(eLanguageTypeObjC); + return objc_runtime ? objc_runtime->CouldHaveDynamicValue(in_value) : false; } -BreakpointSiteList & -Process::GetBreakpointSiteList() -{ - return m_breakpoint_site_list; +void Process::SetDynamicCheckers(DynamicCheckerFunctions *dynamic_checkers) { + m_dynamic_checkers_ap.reset(dynamic_checkers); } -const BreakpointSiteList & -Process::GetBreakpointSiteList() const -{ - return m_breakpoint_site_list; +BreakpointSiteList &Process::GetBreakpointSiteList() { + return m_breakpoint_site_list; } -void -Process::DisableAllBreakpointSites () -{ - m_breakpoint_site_list.ForEach([this](BreakpointSite *bp_site) -> void { -// bp_site->SetEnabled(true); - DisableBreakpointSite(bp_site); - }); +const BreakpointSiteList &Process::GetBreakpointSiteList() const { + return m_breakpoint_site_list; } -Error -Process::ClearBreakpointSiteByID (lldb::user_id_t break_id) -{ - Error error (DisableBreakpointSiteByID (break_id)); - - if (error.Success()) - m_breakpoint_site_list.Remove(break_id); - - return error; +void Process::DisableAllBreakpointSites() { + m_breakpoint_site_list.ForEach([this](BreakpointSite *bp_site) -> void { + // bp_site->SetEnabled(true); + DisableBreakpointSite(bp_site); + }); } -Error -Process::DisableBreakpointSiteByID (lldb::user_id_t break_id) -{ - Error error; - BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); - if (bp_site_sp) - { - if (bp_site_sp->IsEnabled()) - error = DisableBreakpointSite (bp_site_sp.get()); - } - else - { - error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64, break_id); - } +Error Process::ClearBreakpointSiteByID(lldb::user_id_t break_id) { + Error error(DisableBreakpointSiteByID(break_id)); - return error; -} + if (error.Success()) + m_breakpoint_site_list.Remove(break_id); -Error -Process::EnableBreakpointSiteByID (lldb::user_id_t break_id) -{ - Error error; - BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); - if (bp_site_sp) - { - if (!bp_site_sp->IsEnabled()) - error = EnableBreakpointSite (bp_site_sp.get()); - } - else - { - error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64, break_id); - } - return error; + return error; } -lldb::break_id_t -Process::CreateBreakpointSite (const BreakpointLocationSP &owner, bool use_hardware) -{ - addr_t load_addr = LLDB_INVALID_ADDRESS; - - bool show_error = true; - switch (GetState()) - { - case eStateInvalid: - case eStateUnloaded: - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - case eStateDetached: - case eStateExited: - show_error = false; - break; - - case eStateStopped: - case eStateRunning: - case eStateStepping: - case eStateCrashed: - case eStateSuspended: - show_error = IsAlive(); - break; - } +Error Process::DisableBreakpointSiteByID(lldb::user_id_t break_id) { + Error error; + BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID(break_id); + if (bp_site_sp) { + if (bp_site_sp->IsEnabled()) + error = DisableBreakpointSite(bp_site_sp.get()); + } else { + error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64, + break_id); + } - // Reset the IsIndirect flag here, in case the location changes from - // pointing to a indirect symbol to a regular symbol. - owner->SetIsIndirect (false); - - if (owner->ShouldResolveIndirectFunctions()) - { - Symbol *symbol = owner->GetAddress().CalculateSymbolContextSymbol(); - if (symbol && symbol->IsIndirect()) - { - Error error; - Address symbol_address = symbol->GetAddress(); - load_addr = ResolveIndirectFunction (&symbol_address, error); - if (!error.Success() && show_error) - { - GetTarget().GetDebugger().GetErrorFile()->Printf ("warning: failed to resolve indirect function at 0x%" PRIx64 " for breakpoint %i.%i: %s\n", - symbol->GetLoadAddress(&GetTarget()), - owner->GetBreakpoint().GetID(), - owner->GetID(), - error.AsCString() ? error.AsCString() : "unknown error"); - return LLDB_INVALID_BREAK_ID; - } - Address resolved_address(load_addr); - load_addr = resolved_address.GetOpcodeLoadAddress (&GetTarget()); - owner->SetIsIndirect(true); - } - else - load_addr = owner->GetAddress().GetOpcodeLoadAddress (&GetTarget()); - } - else - load_addr = owner->GetAddress().GetOpcodeLoadAddress (&GetTarget()); - - if (load_addr != LLDB_INVALID_ADDRESS) - { - BreakpointSiteSP bp_site_sp; - - // Look up this breakpoint site. If it exists, then add this new owner, otherwise - // create a new breakpoint site and add it. - - bp_site_sp = m_breakpoint_site_list.FindByAddress (load_addr); - - if (bp_site_sp) - { - bp_site_sp->AddOwner (owner); - owner->SetBreakpointSite (bp_site_sp); - return bp_site_sp->GetID(); - } - else - { - bp_site_sp.reset (new BreakpointSite (&m_breakpoint_site_list, owner, load_addr, use_hardware)); - if (bp_site_sp) - { - Error error = EnableBreakpointSite (bp_site_sp.get()); - if (error.Success()) - { - owner->SetBreakpointSite (bp_site_sp); - return m_breakpoint_site_list.Add (bp_site_sp); - } - else - { - if (show_error) - { - // Report error for setting breakpoint... - GetTarget().GetDebugger().GetErrorFile()->Printf ("warning: failed to set breakpoint site at 0x%" PRIx64 " for breakpoint %i.%i: %s\n", - load_addr, - owner->GetBreakpoint().GetID(), - owner->GetID(), - error.AsCString() ? error.AsCString() : "unknown error"); - } - } - } - } - } - // We failed to enable the breakpoint - return LLDB_INVALID_BREAK_ID; + return error; } -void -Process::RemoveOwnerFromBreakpointSite (lldb::user_id_t owner_id, lldb::user_id_t owner_loc_id, BreakpointSiteSP &bp_site_sp) -{ - uint32_t num_owners = bp_site_sp->RemoveOwner (owner_id, owner_loc_id); - if (num_owners == 0) - { - // Don't try to disable the site if we don't have a live process anymore. - if (IsAlive()) - DisableBreakpointSite (bp_site_sp.get()); - m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress()); - } -} - -size_t -Process::RemoveBreakpointOpcodesFromBuffer (addr_t bp_addr, size_t size, uint8_t *buf) const -{ - size_t bytes_removed = 0; - BreakpointSiteList bp_sites_in_range; - - if (m_breakpoint_site_list.FindInRange (bp_addr, bp_addr + size, bp_sites_in_range)) - { - bp_sites_in_range.ForEach([bp_addr, size, buf, &bytes_removed](BreakpointSite *bp_site) -> void { - if (bp_site->GetType() == BreakpointSite::eSoftware) - { - addr_t intersect_addr; - size_t intersect_size; - size_t opcode_offset; - if (bp_site->IntersectsRange(bp_addr, size, &intersect_addr, &intersect_size, &opcode_offset)) - { - assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size); - assert(bp_addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= bp_addr + size); - assert(opcode_offset + intersect_size <= bp_site->GetByteSize()); - size_t buf_offset = intersect_addr - bp_addr; - ::memcpy(buf + buf_offset, bp_site->GetSavedOpcodeBytes() + opcode_offset, intersect_size); - } - } - }); - } - return bytes_removed; +Error Process::EnableBreakpointSiteByID(lldb::user_id_t break_id) { + Error error; + BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID(break_id); + if (bp_site_sp) { + if (!bp_site_sp->IsEnabled()) + error = EnableBreakpointSite(bp_site_sp.get()); + } else { + error.SetErrorStringWithFormat("invalid breakpoint site ID: %" PRIu64, + break_id); + } + return error; } -size_t -Process::GetSoftwareBreakpointTrapOpcode (BreakpointSite* bp_site) -{ - PlatformSP platform_sp (GetTarget().GetPlatform()); - if (platform_sp) - return platform_sp->GetSoftwareBreakpointTrapOpcode (GetTarget(), bp_site); - return 0; -} - -Error -Process::EnableSoftwareBreakpoint (BreakpointSite *bp_site) -{ - Error error; - assert(bp_site != nullptr); - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); - const addr_t bp_addr = bp_site->GetLoadAddress(); - if (log) - log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64, bp_site->GetID(), (uint64_t)bp_addr); - if (bp_site->IsEnabled()) - { - if (log) - log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- already enabled", bp_site->GetID(), (uint64_t)bp_addr); - return error; - } - - if (bp_addr == LLDB_INVALID_ADDRESS) - { - error.SetErrorString("BreakpointSite contains an invalid load address."); - return error; - } - // Ask the lldb::Process subclass to fill in the correct software breakpoint - // trap for the breakpoint site - const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site); - - if (bp_opcode_size == 0) - { - error.SetErrorStringWithFormat ("Process::GetSoftwareBreakpointTrapOpcode() returned zero, unable to get breakpoint trap for address 0x%" PRIx64, bp_addr); - } - else - { - const uint8_t * const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes(); - - if (bp_opcode_bytes == nullptr) - { - error.SetErrorString ("BreakpointSite doesn't contain a valid breakpoint trap opcode."); - return error; +lldb::break_id_t +Process::CreateBreakpointSite(const BreakpointLocationSP &owner, + bool use_hardware) { + addr_t load_addr = LLDB_INVALID_ADDRESS; + + bool show_error = true; + switch (GetState()) { + case eStateInvalid: + case eStateUnloaded: + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + case eStateDetached: + case eStateExited: + show_error = false; + break; + + case eStateStopped: + case eStateRunning: + case eStateStepping: + case eStateCrashed: + case eStateSuspended: + show_error = IsAlive(); + break; + } + + // Reset the IsIndirect flag here, in case the location changes from + // pointing to a indirect symbol to a regular symbol. + owner->SetIsIndirect(false); + + if (owner->ShouldResolveIndirectFunctions()) { + Symbol *symbol = owner->GetAddress().CalculateSymbolContextSymbol(); + if (symbol && symbol->IsIndirect()) { + Error error; + Address symbol_address = symbol->GetAddress(); + load_addr = ResolveIndirectFunction(&symbol_address, error); + if (!error.Success() && show_error) { + GetTarget().GetDebugger().GetErrorFile()->Printf( + "warning: failed to resolve indirect function at 0x%" PRIx64 + " for breakpoint %i.%i: %s\n", + symbol->GetLoadAddress(&GetTarget()), + owner->GetBreakpoint().GetID(), owner->GetID(), + error.AsCString() ? error.AsCString() : "unknown error"); + return LLDB_INVALID_BREAK_ID; + } + Address resolved_address(load_addr); + load_addr = resolved_address.GetOpcodeLoadAddress(&GetTarget()); + owner->SetIsIndirect(true); + } else + load_addr = owner->GetAddress().GetOpcodeLoadAddress(&GetTarget()); + } else + load_addr = owner->GetAddress().GetOpcodeLoadAddress(&GetTarget()); + + if (load_addr != LLDB_INVALID_ADDRESS) { + BreakpointSiteSP bp_site_sp; + + // Look up this breakpoint site. If it exists, then add this new owner, + // otherwise + // create a new breakpoint site and add it. + + bp_site_sp = m_breakpoint_site_list.FindByAddress(load_addr); + + if (bp_site_sp) { + bp_site_sp->AddOwner(owner); + owner->SetBreakpointSite(bp_site_sp); + return bp_site_sp->GetID(); + } else { + bp_site_sp.reset(new BreakpointSite(&m_breakpoint_site_list, owner, + load_addr, use_hardware)); + if (bp_site_sp) { + Error error = EnableBreakpointSite(bp_site_sp.get()); + if (error.Success()) { + owner->SetBreakpointSite(bp_site_sp); + return m_breakpoint_site_list.Add(bp_site_sp); + } else { + if (show_error) { + // Report error for setting breakpoint... + GetTarget().GetDebugger().GetErrorFile()->Printf( + "warning: failed to set breakpoint site at 0x%" PRIx64 + " for breakpoint %i.%i: %s\n", + load_addr, owner->GetBreakpoint().GetID(), owner->GetID(), + error.AsCString() ? error.AsCString() : "unknown error"); + } } - - // Save the original opcode by reading it - if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, error) == bp_opcode_size) - { - // Write a software breakpoint in place of the original opcode - if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) - { - uint8_t verify_bp_opcode_bytes[64]; - if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) - { - if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, bp_opcode_size) == 0) - { - bp_site->SetEnabled(true); - bp_site->SetType (BreakpointSite::eSoftware); - if (log) - log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- SUCCESS", - bp_site->GetID(), - (uint64_t)bp_addr); - } - else - error.SetErrorString("failed to verify the breakpoint trap in memory."); - } - else - error.SetErrorString("Unable to read memory to verify breakpoint trap."); - } - else - error.SetErrorString("Unable to write breakpoint trap to memory."); + } + } + } + // We failed to enable the breakpoint + return LLDB_INVALID_BREAK_ID; +} + +void Process::RemoveOwnerFromBreakpointSite(lldb::user_id_t owner_id, + lldb::user_id_t owner_loc_id, + BreakpointSiteSP &bp_site_sp) { + uint32_t num_owners = bp_site_sp->RemoveOwner(owner_id, owner_loc_id); + if (num_owners == 0) { + // Don't try to disable the site if we don't have a live process anymore. + if (IsAlive()) + DisableBreakpointSite(bp_site_sp.get()); + m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress()); + } +} + +size_t Process::RemoveBreakpointOpcodesFromBuffer(addr_t bp_addr, size_t size, + uint8_t *buf) const { + size_t bytes_removed = 0; + BreakpointSiteList bp_sites_in_range; + + if (m_breakpoint_site_list.FindInRange(bp_addr, bp_addr + size, + bp_sites_in_range)) { + bp_sites_in_range.ForEach([bp_addr, size, buf, &bytes_removed]( + BreakpointSite *bp_site) -> void { + if (bp_site->GetType() == BreakpointSite::eSoftware) { + addr_t intersect_addr; + size_t intersect_size; + size_t opcode_offset; + if (bp_site->IntersectsRange(bp_addr, size, &intersect_addr, + &intersect_size, &opcode_offset)) { + assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size); + assert(bp_addr < intersect_addr + intersect_size && + intersect_addr + intersect_size <= bp_addr + size); + assert(opcode_offset + intersect_size <= bp_site->GetByteSize()); + size_t buf_offset = intersect_addr - bp_addr; + ::memcpy(buf + buf_offset, + bp_site->GetSavedOpcodeBytes() + opcode_offset, + intersect_size); } - else - error.SetErrorString("Unable to read memory at breakpoint address."); - } - if (log && error.Fail()) - log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- FAILED: %s", - bp_site->GetID(), - (uint64_t)bp_addr, - error.AsCString()); - return error; -} - -Error -Process::DisableSoftwareBreakpoint (BreakpointSite *bp_site) -{ - Error error; - assert(bp_site != nullptr); - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS)); - addr_t bp_addr = bp_site->GetLoadAddress(); - lldb::user_id_t breakID = bp_site->GetID(); + } + }); + } + return bytes_removed; +} + +size_t Process::GetSoftwareBreakpointTrapOpcode(BreakpointSite *bp_site) { + PlatformSP platform_sp(GetTarget().GetPlatform()); + if (platform_sp) + return platform_sp->GetSoftwareBreakpointTrapOpcode(GetTarget(), bp_site); + return 0; +} + +Error Process::EnableSoftwareBreakpoint(BreakpointSite *bp_site) { + Error error; + assert(bp_site != nullptr); + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS)); + const addr_t bp_addr = bp_site->GetLoadAddress(); + if (log) + log->Printf( + "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64, + bp_site->GetID(), (uint64_t)bp_addr); + if (bp_site->IsEnabled()) { if (log) - log->Printf ("Process::DisableSoftwareBreakpoint (breakID = %" PRIu64 ") addr = 0x%" PRIx64, breakID, (uint64_t)bp_addr); + log->Printf( + "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 + " -- already enabled", + bp_site->GetID(), (uint64_t)bp_addr); + return error; + } - if (bp_site->IsHardware()) - { - error.SetErrorString("Breakpoint site is a hardware breakpoint."); - } - else if (bp_site->IsEnabled()) - { - const size_t break_op_size = bp_site->GetByteSize(); - const uint8_t * const break_op = bp_site->GetTrapOpcodeBytes(); - if (break_op_size > 0) - { - // Clear a software breakpoint instruction - uint8_t curr_break_op[8]; - assert (break_op_size <= sizeof(curr_break_op)); - bool break_op_found = false; - - // Read the breakpoint opcode - if (DoReadMemory (bp_addr, curr_break_op, break_op_size, error) == break_op_size) - { - bool verify = false; - // Make sure the breakpoint opcode exists at this address - if (::memcmp (curr_break_op, break_op, break_op_size) == 0) - { - break_op_found = true; - // We found a valid breakpoint opcode at this address, now restore - // the saved opcode. - if (DoWriteMemory (bp_addr, bp_site->GetSavedOpcodeBytes(), break_op_size, error) == break_op_size) - { - verify = true; - } - else - error.SetErrorString("Memory write failed when restoring original opcode."); - } - else - { - error.SetErrorString("Original breakpoint trap is no longer in memory."); - // Set verify to true and so we can check if the original opcode has already been restored - verify = true; - } + if (bp_addr == LLDB_INVALID_ADDRESS) { + error.SetErrorString("BreakpointSite contains an invalid load address."); + return error; + } + // Ask the lldb::Process subclass to fill in the correct software breakpoint + // trap for the breakpoint site + const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site); + + if (bp_opcode_size == 0) { + error.SetErrorStringWithFormat("Process::GetSoftwareBreakpointTrapOpcode() " + "returned zero, unable to get breakpoint " + "trap for address 0x%" PRIx64, + bp_addr); + } else { + const uint8_t *const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes(); + + if (bp_opcode_bytes == nullptr) { + error.SetErrorString( + "BreakpointSite doesn't contain a valid breakpoint trap opcode."); + return error; + } + + // Save the original opcode by reading it + if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, + error) == bp_opcode_size) { + // Write a software breakpoint in place of the original opcode + if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == + bp_opcode_size) { + uint8_t verify_bp_opcode_bytes[64]; + if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, + error) == bp_opcode_size) { + if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, + bp_opcode_size) == 0) { + bp_site->SetEnabled(true); + bp_site->SetType(BreakpointSite::eSoftware); + if (log) + log->Printf("Process::EnableSoftwareBreakpoint (site_id = %d) " + "addr = 0x%" PRIx64 " -- SUCCESS", + bp_site->GetID(), (uint64_t)bp_addr); + } else + error.SetErrorString( + "failed to verify the breakpoint trap in memory."); + } else + error.SetErrorString( + "Unable to read memory to verify breakpoint trap."); + } else + error.SetErrorString("Unable to write breakpoint trap to memory."); + } else + error.SetErrorString("Unable to read memory at breakpoint address."); + } + if (log && error.Fail()) + log->Printf( + "Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 + " -- FAILED: %s", + bp_site->GetID(), (uint64_t)bp_addr, error.AsCString()); + return error; +} + +Error Process::DisableSoftwareBreakpoint(BreakpointSite *bp_site) { + Error error; + assert(bp_site != nullptr); + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS)); + addr_t bp_addr = bp_site->GetLoadAddress(); + lldb::user_id_t breakID = bp_site->GetID(); + if (log) + log->Printf("Process::DisableSoftwareBreakpoint (breakID = %" PRIu64 + ") addr = 0x%" PRIx64, + breakID, (uint64_t)bp_addr); + + if (bp_site->IsHardware()) { + error.SetErrorString("Breakpoint site is a hardware breakpoint."); + } else if (bp_site->IsEnabled()) { + const size_t break_op_size = bp_site->GetByteSize(); + const uint8_t *const break_op = bp_site->GetTrapOpcodeBytes(); + if (break_op_size > 0) { + // Clear a software breakpoint instruction + uint8_t curr_break_op[8]; + assert(break_op_size <= sizeof(curr_break_op)); + bool break_op_found = false; + + // Read the breakpoint opcode + if (DoReadMemory(bp_addr, curr_break_op, break_op_size, error) == + break_op_size) { + bool verify = false; + // Make sure the breakpoint opcode exists at this address + if (::memcmp(curr_break_op, break_op, break_op_size) == 0) { + break_op_found = true; + // We found a valid breakpoint opcode at this address, now restore + // the saved opcode. + if (DoWriteMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), + break_op_size, error) == break_op_size) { + verify = true; + } else + error.SetErrorString( + "Memory write failed when restoring original opcode."); + } else { + error.SetErrorString( + "Original breakpoint trap is no longer in memory."); + // Set verify to true and so we can check if the original opcode has + // already been restored + verify = true; + } - if (verify) - { - uint8_t verify_opcode[8]; - assert (break_op_size < sizeof(verify_opcode)); - // Verify that our original opcode made it back to the inferior - if (DoReadMemory (bp_addr, verify_opcode, break_op_size, error) == break_op_size) - { - // compare the memory we just read with the original opcode - if (::memcmp (bp_site->GetSavedOpcodeBytes(), verify_opcode, break_op_size) == 0) - { - // SUCCESS - bp_site->SetEnabled(false); - if (log) - log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- SUCCESS", bp_site->GetID(), (uint64_t)bp_addr); - return error; - } - else - { - if (break_op_found) - error.SetErrorString("Failed to restore original opcode."); - } - } - else - error.SetErrorString("Failed to read memory to verify that breakpoint trap was restored."); - } + if (verify) { + uint8_t verify_opcode[8]; + assert(break_op_size < sizeof(verify_opcode)); + // Verify that our original opcode made it back to the inferior + if (DoReadMemory(bp_addr, verify_opcode, break_op_size, error) == + break_op_size) { + // compare the memory we just read with the original opcode + if (::memcmp(bp_site->GetSavedOpcodeBytes(), verify_opcode, + break_op_size) == 0) { + // SUCCESS + bp_site->SetEnabled(false); + if (log) + log->Printf("Process::DisableSoftwareBreakpoint (site_id = %d) " + "addr = 0x%" PRIx64 " -- SUCCESS", + bp_site->GetID(), (uint64_t)bp_addr); + return error; + } else { + if (break_op_found) + error.SetErrorString("Failed to restore original opcode."); } - else - error.SetErrorString("Unable to read memory that should contain the breakpoint trap."); + } else + error.SetErrorString("Failed to read memory to verify that " + "breakpoint trap was restored."); } + } else + error.SetErrorString( + "Unable to read memory that should contain the breakpoint trap."); } - else - { - if (log) - log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- already disabled", bp_site->GetID(), (uint64_t)bp_addr); - return error; - } - + } else { if (log) - log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 " -- FAILED: %s", - bp_site->GetID(), - (uint64_t)bp_addr, - error.AsCString()); + log->Printf( + "Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 + " -- already disabled", + bp_site->GetID(), (uint64_t)bp_addr); return error; + } + + if (log) + log->Printf( + "Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%" PRIx64 + " -- FAILED: %s", + bp_site->GetID(), (uint64_t)bp_addr, error.AsCString()); + return error; } // Uncomment to verify memory caching works after making changes to caching code //#define VERIFY_MEMORY_READS -size_t -Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) -{ - error.Clear(); - if (!GetDisableMemoryCache()) - { -#if defined (VERIFY_MEMORY_READS) - // Memory caching is enabled, with debug verification - - if (buf && size) - { - // Uncomment the line below to make sure memory caching is working. - // I ran this through the test suite and got no assertions, so I am - // pretty confident this is working well. If any changes are made to - // memory caching, uncomment the line below and test your changes! - - // Verify all memory reads by using the cache first, then redundantly - // reading the same memory from the inferior and comparing to make sure - // everything is exactly the same. - std::string verify_buf (size, '\0'); - assert (verify_buf.size() == size); - const size_t cache_bytes_read = m_memory_cache.Read (this, addr, buf, size, error); - Error verify_error; - const size_t verify_bytes_read = ReadMemoryFromInferior (addr, const_cast<char *>(verify_buf.data()), verify_buf.size(), verify_error); - assert (cache_bytes_read == verify_bytes_read); - assert (memcmp(buf, verify_buf.data(), verify_buf.size()) == 0); - assert (verify_error.Success() == error.Success()); - return cache_bytes_read; - } - return 0; -#else // !defined(VERIFY_MEMORY_READS) - // Memory caching is enabled, without debug verification - - return m_memory_cache.Read (addr, buf, size, error); -#endif // defined (VERIFY_MEMORY_READS) - } - else - { - // Memory caching is disabled - - return ReadMemoryFromInferior (addr, buf, size, error); +size_t Process::ReadMemory(addr_t addr, void *buf, size_t size, Error &error) { + error.Clear(); + if (!GetDisableMemoryCache()) { +#if defined(VERIFY_MEMORY_READS) + // Memory caching is enabled, with debug verification + + if (buf && size) { + // Uncomment the line below to make sure memory caching is working. + // I ran this through the test suite and got no assertions, so I am + // pretty confident this is working well. If any changes are made to + // memory caching, uncomment the line below and test your changes! + + // Verify all memory reads by using the cache first, then redundantly + // reading the same memory from the inferior and comparing to make sure + // everything is exactly the same. + std::string verify_buf(size, '\0'); + assert(verify_buf.size() == size); + const size_t cache_bytes_read = + m_memory_cache.Read(this, addr, buf, size, error); + Error verify_error; + const size_t verify_bytes_read = + ReadMemoryFromInferior(addr, const_cast<char *>(verify_buf.data()), + verify_buf.size(), verify_error); + assert(cache_bytes_read == verify_bytes_read); + assert(memcmp(buf, verify_buf.data(), verify_buf.size()) == 0); + assert(verify_error.Success() == error.Success()); + return cache_bytes_read; } -} - -size_t -Process::ReadCStringFromMemory (addr_t addr, std::string &out_str, Error &error) -{ - char buf[256]; - out_str.clear(); - addr_t curr_addr = addr; - while (true) - { - size_t length = ReadCStringFromMemory (curr_addr, buf, sizeof(buf), error); - if (length == 0) - break; - out_str.append(buf, length); - // If we got "length - 1" bytes, we didn't get the whole C string, we - // need to read some more characters - if (length == sizeof(buf) - 1) - curr_addr += length; - else - break; - } - return out_str.size(); -} - -size_t -Process::ReadStringFromMemory (addr_t addr, char *dst, size_t max_bytes, Error &error, - size_t type_width) -{ - size_t total_bytes_read = 0; - if (dst && max_bytes && type_width && max_bytes >= type_width) - { - // Ensure a null terminator independent of the number of bytes that is read. - memset (dst, 0, max_bytes); - size_t bytes_left = max_bytes - type_width; - - const char terminator[4] = {'\0', '\0', '\0', '\0'}; - assert(sizeof(terminator) >= type_width && - "Attempting to validate a string with more than 4 bytes per character!"); - - addr_t curr_addr = addr; - const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); - char *curr_dst = dst; - - error.Clear(); - while (bytes_left > 0 && error.Success()) - { - addr_t cache_line_bytes_left = cache_line_size - (curr_addr % cache_line_size); - addr_t bytes_to_read = std::min<addr_t>(bytes_left, cache_line_bytes_left); - size_t bytes_read = ReadMemory (curr_addr, curr_dst, bytes_to_read, error); - - if (bytes_read == 0) - break; - - // Search for a null terminator of correct size and alignment in bytes_read - size_t aligned_start = total_bytes_read - total_bytes_read % type_width; - for (size_t i = aligned_start; i + type_width <= total_bytes_read + bytes_read; i += type_width) - if (::memcmp(&dst[i], terminator, type_width) == 0) - { - error.Clear(); - return i; - } + return 0; +#else // !defined(VERIFY_MEMORY_READS) + // Memory caching is enabled, without debug verification - total_bytes_read += bytes_read; - curr_dst += bytes_read; - curr_addr += bytes_read; - bytes_left -= bytes_read; - } - } + return m_memory_cache.Read(addr, buf, size, error); +#endif // defined (VERIFY_MEMORY_READS) + } else { + // Memory caching is disabled + + return ReadMemoryFromInferior(addr, buf, size, error); + } +} + +size_t Process::ReadCStringFromMemory(addr_t addr, std::string &out_str, + Error &error) { + char buf[256]; + out_str.clear(); + addr_t curr_addr = addr; + while (true) { + size_t length = ReadCStringFromMemory(curr_addr, buf, sizeof(buf), error); + if (length == 0) + break; + out_str.append(buf, length); + // If we got "length - 1" bytes, we didn't get the whole C string, we + // need to read some more characters + if (length == sizeof(buf) - 1) + curr_addr += length; else - { - if (max_bytes) - error.SetErrorString("invalid arguments"); - } - return total_bytes_read; + break; + } + return out_str.size(); } -// Deprecated in favor of ReadStringFromMemory which has wchar support and correct code to find -// null terminators. -size_t -Process::ReadCStringFromMemory (addr_t addr, char *dst, size_t dst_max_len, Error &result_error) -{ - size_t total_cstr_len = 0; - if (dst && dst_max_len) - { - result_error.Clear(); - // NULL out everything just to be safe - memset (dst, 0, dst_max_len); - Error error; - addr_t curr_addr = addr; - const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); - size_t bytes_left = dst_max_len - 1; - char *curr_dst = dst; - - while (bytes_left > 0) - { - addr_t cache_line_bytes_left = cache_line_size - (curr_addr % cache_line_size); - addr_t bytes_to_read = std::min<addr_t>(bytes_left, cache_line_bytes_left); - size_t bytes_read = ReadMemory (curr_addr, curr_dst, bytes_to_read, error); - - if (bytes_read == 0) - { - result_error = error; - dst[total_cstr_len] = '\0'; - break; - } - const size_t len = strlen(curr_dst); +size_t Process::ReadStringFromMemory(addr_t addr, char *dst, size_t max_bytes, + Error &error, size_t type_width) { + size_t total_bytes_read = 0; + if (dst && max_bytes && type_width && max_bytes >= type_width) { + // Ensure a null terminator independent of the number of bytes that is read. + memset(dst, 0, max_bytes); + size_t bytes_left = max_bytes - type_width; - total_cstr_len += len; + const char terminator[4] = {'\0', '\0', '\0', '\0'}; + assert(sizeof(terminator) >= type_width && "Attempting to validate a " + "string with more than 4 bytes " + "per character!"); - if (len < bytes_to_read) - break; + addr_t curr_addr = addr; + const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); + char *curr_dst = dst; - curr_dst += bytes_read; - curr_addr += bytes_read; - bytes_left -= bytes_read; + error.Clear(); + while (bytes_left > 0 && error.Success()) { + addr_t cache_line_bytes_left = + cache_line_size - (curr_addr % cache_line_size); + addr_t bytes_to_read = + std::min<addr_t>(bytes_left, cache_line_bytes_left); + size_t bytes_read = ReadMemory(curr_addr, curr_dst, bytes_to_read, error); + + if (bytes_read == 0) + break; + + // Search for a null terminator of correct size and alignment in + // bytes_read + size_t aligned_start = total_bytes_read - total_bytes_read % type_width; + for (size_t i = aligned_start; + i + type_width <= total_bytes_read + bytes_read; i += type_width) + if (::memcmp(&dst[i], terminator, type_width) == 0) { + error.Clear(); + return i; } - } - else - { - if (dst == nullptr) - result_error.SetErrorString("invalid arguments"); - else - result_error.Clear(); - } - return total_cstr_len; -} - -size_t -Process::ReadMemoryFromInferior (addr_t addr, void *buf, size_t size, Error &error) -{ - if (buf == nullptr || size == 0) - return 0; - size_t bytes_read = 0; - uint8_t *bytes = (uint8_t *)buf; - - while (bytes_read < size) - { - const size_t curr_size = size - bytes_read; - const size_t curr_bytes_read = DoReadMemory (addr + bytes_read, - bytes + bytes_read, - curr_size, - error); - bytes_read += curr_bytes_read; - if (curr_bytes_read == curr_size || curr_bytes_read == 0) - break; + total_bytes_read += bytes_read; + curr_dst += bytes_read; + curr_addr += bytes_read; + bytes_left -= bytes_read; } - - // Replace any software breakpoint opcodes that fall into this range back - // into "buf" before we return - if (bytes_read > 0) - RemoveBreakpointOpcodesFromBuffer (addr, bytes_read, (uint8_t *)buf); - return bytes_read; + } else { + if (max_bytes) + error.SetErrorString("invalid arguments"); + } + return total_bytes_read; } -uint64_t -Process::ReadUnsignedIntegerFromMemory(lldb::addr_t vm_addr, size_t integer_byte_size, uint64_t fail_value, - Error &error) -{ - Scalar scalar; - if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, false, scalar, error)) - return scalar.ULongLong(fail_value); - return fail_value; -} - -int64_t -Process::ReadSignedIntegerFromMemory(lldb::addr_t vm_addr, size_t integer_byte_size, int64_t fail_value, Error &error) -{ - Scalar scalar; - if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, true, scalar, error)) - return scalar.SLongLong(fail_value); - return fail_value; -} - -addr_t -Process::ReadPointerFromMemory (lldb::addr_t vm_addr, Error &error) -{ - Scalar scalar; - if (ReadScalarIntegerFromMemory(vm_addr, GetAddressByteSize(), false, scalar, error)) - return scalar.ULongLong(LLDB_INVALID_ADDRESS); - return LLDB_INVALID_ADDRESS; -} - -bool -Process::WritePointerToMemory (lldb::addr_t vm_addr, - lldb::addr_t ptr_value, - Error &error) -{ - Scalar scalar; - const uint32_t addr_byte_size = GetAddressByteSize(); - if (addr_byte_size <= 4) - scalar = (uint32_t)ptr_value; +// Deprecated in favor of ReadStringFromMemory which has wchar support and +// correct code to find +// null terminators. +size_t Process::ReadCStringFromMemory(addr_t addr, char *dst, + size_t dst_max_len, Error &result_error) { + size_t total_cstr_len = 0; + if (dst && dst_max_len) { + result_error.Clear(); + // NULL out everything just to be safe + memset(dst, 0, dst_max_len); + Error error; + addr_t curr_addr = addr; + const size_t cache_line_size = m_memory_cache.GetMemoryCacheLineSize(); + size_t bytes_left = dst_max_len - 1; + char *curr_dst = dst; + + while (bytes_left > 0) { + addr_t cache_line_bytes_left = + cache_line_size - (curr_addr % cache_line_size); + addr_t bytes_to_read = + std::min<addr_t>(bytes_left, cache_line_bytes_left); + size_t bytes_read = ReadMemory(curr_addr, curr_dst, bytes_to_read, error); + + if (bytes_read == 0) { + result_error = error; + dst[total_cstr_len] = '\0'; + break; + } + const size_t len = strlen(curr_dst); + + total_cstr_len += len; + + if (len < bytes_to_read) + break; + + curr_dst += bytes_read; + curr_addr += bytes_read; + bytes_left -= bytes_read; + } + } else { + if (dst == nullptr) + result_error.SetErrorString("invalid arguments"); else - scalar = ptr_value; - return WriteScalarToMemory(vm_addr, scalar, addr_byte_size, error) == addr_byte_size; + result_error.Clear(); + } + return total_cstr_len; } -size_t -Process::WriteMemoryPrivate (addr_t addr, const void *buf, size_t size, Error &error) -{ - size_t bytes_written = 0; - const uint8_t *bytes = (const uint8_t *)buf; - - while (bytes_written < size) - { - const size_t curr_size = size - bytes_written; - const size_t curr_bytes_written = DoWriteMemory (addr + bytes_written, - bytes + bytes_written, - curr_size, - error); - bytes_written += curr_bytes_written; - if (curr_bytes_written == curr_size || curr_bytes_written == 0) - break; - } - return bytes_written; -} +size_t Process::ReadMemoryFromInferior(addr_t addr, void *buf, size_t size, + Error &error) { + if (buf == nullptr || size == 0) + return 0; -size_t -Process::WriteMemory (addr_t addr, const void *buf, size_t size, Error &error) -{ -#if defined (ENABLE_MEMORY_CACHING) - m_memory_cache.Flush (addr, size); + size_t bytes_read = 0; + uint8_t *bytes = (uint8_t *)buf; + + while (bytes_read < size) { + const size_t curr_size = size - bytes_read; + const size_t curr_bytes_read = + DoReadMemory(addr + bytes_read, bytes + bytes_read, curr_size, error); + bytes_read += curr_bytes_read; + if (curr_bytes_read == curr_size || curr_bytes_read == 0) + break; + } + + // Replace any software breakpoint opcodes that fall into this range back + // into "buf" before we return + if (bytes_read > 0) + RemoveBreakpointOpcodesFromBuffer(addr, bytes_read, (uint8_t *)buf); + return bytes_read; +} + +uint64_t Process::ReadUnsignedIntegerFromMemory(lldb::addr_t vm_addr, + size_t integer_byte_size, + uint64_t fail_value, + Error &error) { + Scalar scalar; + if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, false, scalar, + error)) + return scalar.ULongLong(fail_value); + return fail_value; +} + +int64_t Process::ReadSignedIntegerFromMemory(lldb::addr_t vm_addr, + size_t integer_byte_size, + int64_t fail_value, Error &error) { + Scalar scalar; + if (ReadScalarIntegerFromMemory(vm_addr, integer_byte_size, true, scalar, + error)) + return scalar.SLongLong(fail_value); + return fail_value; +} + +addr_t Process::ReadPointerFromMemory(lldb::addr_t vm_addr, Error &error) { + Scalar scalar; + if (ReadScalarIntegerFromMemory(vm_addr, GetAddressByteSize(), false, scalar, + error)) + return scalar.ULongLong(LLDB_INVALID_ADDRESS); + return LLDB_INVALID_ADDRESS; +} + +bool Process::WritePointerToMemory(lldb::addr_t vm_addr, lldb::addr_t ptr_value, + Error &error) { + Scalar scalar; + const uint32_t addr_byte_size = GetAddressByteSize(); + if (addr_byte_size <= 4) + scalar = (uint32_t)ptr_value; + else + scalar = ptr_value; + return WriteScalarToMemory(vm_addr, scalar, addr_byte_size, error) == + addr_byte_size; +} + +size_t Process::WriteMemoryPrivate(addr_t addr, const void *buf, size_t size, + Error &error) { + size_t bytes_written = 0; + const uint8_t *bytes = (const uint8_t *)buf; + + while (bytes_written < size) { + const size_t curr_size = size - bytes_written; + const size_t curr_bytes_written = DoWriteMemory( + addr + bytes_written, bytes + bytes_written, curr_size, error); + bytes_written += curr_bytes_written; + if (curr_bytes_written == curr_size || curr_bytes_written == 0) + break; + } + return bytes_written; +} + +size_t Process::WriteMemory(addr_t addr, const void *buf, size_t size, + Error &error) { +#if defined(ENABLE_MEMORY_CACHING) + m_memory_cache.Flush(addr, size); #endif - if (buf == nullptr || size == 0) - return 0; - - m_mod_id.BumpMemoryID(); - - // We need to write any data that would go where any current software traps - // (enabled software breakpoints) any software traps (breakpoints) that we - // may have placed in our tasks memory. - - BreakpointSiteList bp_sites_in_range; - - if (m_breakpoint_site_list.FindInRange (addr, addr + size, bp_sites_in_range)) - { - // No breakpoint sites overlap - if (bp_sites_in_range.IsEmpty()) - return WriteMemoryPrivate (addr, buf, size, error); - else - { - const uint8_t *ubuf = (const uint8_t *)buf; - uint64_t bytes_written = 0; - - bp_sites_in_range.ForEach([this, addr, size, &bytes_written, &ubuf, &error](BreakpointSite *bp) -> void { - - if (error.Success()) - { - addr_t intersect_addr; - size_t intersect_size; - size_t opcode_offset; - const bool intersects = bp->IntersectsRange(addr, size, &intersect_addr, &intersect_size, &opcode_offset); - UNUSED_IF_ASSERT_DISABLED(intersects); - assert(intersects); - assert(addr <= intersect_addr && intersect_addr < addr + size); - assert(addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= addr + size); - assert(opcode_offset + intersect_size <= bp->GetByteSize()); - - // Check for bytes before this breakpoint - const addr_t curr_addr = addr + bytes_written; - if (intersect_addr > curr_addr) - { - // There are some bytes before this breakpoint that we need to - // just write to memory - size_t curr_size = intersect_addr - curr_addr; - size_t curr_bytes_written = WriteMemoryPrivate (curr_addr, - ubuf + bytes_written, - curr_size, - error); - bytes_written += curr_bytes_written; - if (curr_bytes_written != curr_size) - { - // We weren't able to write all of the requested bytes, we - // are done looping and will return the number of bytes that - // we have written so far. - if (error.Success()) - error.SetErrorToGenericError(); - } - } - // Now write any bytes that would cover up any software breakpoints - // directly into the breakpoint opcode buffer - ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, ubuf + bytes_written, intersect_size); - bytes_written += intersect_size; - } - }); - - if (bytes_written < size) - WriteMemoryPrivate (addr + bytes_written, - ubuf + bytes_written, - size - bytes_written, - error); - } - } - else - { - return WriteMemoryPrivate (addr, buf, size, error); - } - - // Write any remaining bytes after the last breakpoint if we have any left - return 0; //bytes_written; -} - -size_t -Process::WriteScalarToMemory (addr_t addr, const Scalar &scalar, size_t byte_size, Error &error) -{ - if (byte_size == UINT32_MAX) - byte_size = scalar.GetByteSize(); - if (byte_size > 0) - { - uint8_t buf[32]; - const size_t mem_size = scalar.GetAsMemoryData (buf, byte_size, GetByteOrder(), error); - if (mem_size > 0) - return WriteMemory(addr, buf, mem_size, error); - else - error.SetErrorString ("failed to get scalar as memory data"); - } - else - { - error.SetErrorString ("invalid scalar value"); - } + if (buf == nullptr || size == 0) return 0; -} -size_t -Process::ReadScalarIntegerFromMemory (addr_t addr, - uint32_t byte_size, - bool is_signed, - Scalar &scalar, - Error &error) -{ - uint64_t uval = 0; - if (byte_size == 0) - { - error.SetErrorString ("byte size is zero"); - } - else if (byte_size & (byte_size - 1)) - { - error.SetErrorStringWithFormat ("byte size %u is not a power of 2", byte_size); - } - else if (byte_size <= sizeof(uval)) - { - const size_t bytes_read = ReadMemory (addr, &uval, byte_size, error); - if (bytes_read == byte_size) - { - DataExtractor data (&uval, sizeof(uval), GetByteOrder(), GetAddressByteSize()); - lldb::offset_t offset = 0; - if (byte_size <= 4) - scalar = data.GetMaxU32 (&offset, byte_size); - else - scalar = data.GetMaxU64 (&offset, byte_size); - if (is_signed) - scalar.SignExtend(byte_size * 8); - return bytes_read; + m_mod_id.BumpMemoryID(); + + // We need to write any data that would go where any current software traps + // (enabled software breakpoints) any software traps (breakpoints) that we + // may have placed in our tasks memory. + + BreakpointSiteList bp_sites_in_range; + + if (m_breakpoint_site_list.FindInRange(addr, addr + size, + bp_sites_in_range)) { + // No breakpoint sites overlap + if (bp_sites_in_range.IsEmpty()) + return WriteMemoryPrivate(addr, buf, size, error); + else { + const uint8_t *ubuf = (const uint8_t *)buf; + uint64_t bytes_written = 0; + + bp_sites_in_range.ForEach([this, addr, size, &bytes_written, &ubuf, + &error](BreakpointSite *bp) -> void { + + if (error.Success()) { + addr_t intersect_addr; + size_t intersect_size; + size_t opcode_offset; + const bool intersects = bp->IntersectsRange( + addr, size, &intersect_addr, &intersect_size, &opcode_offset); + UNUSED_IF_ASSERT_DISABLED(intersects); + assert(intersects); + assert(addr <= intersect_addr && intersect_addr < addr + size); + assert(addr < intersect_addr + intersect_size && + intersect_addr + intersect_size <= addr + size); + assert(opcode_offset + intersect_size <= bp->GetByteSize()); + + // Check for bytes before this breakpoint + const addr_t curr_addr = addr + bytes_written; + if (intersect_addr > curr_addr) { + // There are some bytes before this breakpoint that we need to + // just write to memory + size_t curr_size = intersect_addr - curr_addr; + size_t curr_bytes_written = WriteMemoryPrivate( + curr_addr, ubuf + bytes_written, curr_size, error); + bytes_written += curr_bytes_written; + if (curr_bytes_written != curr_size) { + // We weren't able to write all of the requested bytes, we + // are done looping and will return the number of bytes that + // we have written so far. + if (error.Success()) + error.SetErrorToGenericError(); + } + } + // Now write any bytes that would cover up any software breakpoints + // directly into the breakpoint opcode buffer + ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, + ubuf + bytes_written, intersect_size); + bytes_written += intersect_size; } - } + }); + + if (bytes_written < size) + WriteMemoryPrivate(addr + bytes_written, ubuf + bytes_written, + size - bytes_written, error); + } + } else { + return WriteMemoryPrivate(addr, buf, size, error); + } + + // Write any remaining bytes after the last breakpoint if we have any left + return 0; // bytes_written; +} + +size_t Process::WriteScalarToMemory(addr_t addr, const Scalar &scalar, + size_t byte_size, Error &error) { + if (byte_size == UINT32_MAX) + byte_size = scalar.GetByteSize(); + if (byte_size > 0) { + uint8_t buf[32]; + const size_t mem_size = + scalar.GetAsMemoryData(buf, byte_size, GetByteOrder(), error); + if (mem_size > 0) + return WriteMemory(addr, buf, mem_size, error); else - { - error.SetErrorStringWithFormat ("byte size of %u is too large for integer scalar type", byte_size); - } - return 0; + error.SetErrorString("failed to get scalar as memory data"); + } else { + error.SetErrorString("invalid scalar value"); + } + return 0; +} + +size_t Process::ReadScalarIntegerFromMemory(addr_t addr, uint32_t byte_size, + bool is_signed, Scalar &scalar, + Error &error) { + uint64_t uval = 0; + if (byte_size == 0) { + error.SetErrorString("byte size is zero"); + } else if (byte_size & (byte_size - 1)) { + error.SetErrorStringWithFormat("byte size %u is not a power of 2", + byte_size); + } else if (byte_size <= sizeof(uval)) { + const size_t bytes_read = ReadMemory(addr, &uval, byte_size, error); + if (bytes_read == byte_size) { + DataExtractor data(&uval, sizeof(uval), GetByteOrder(), + GetAddressByteSize()); + lldb::offset_t offset = 0; + if (byte_size <= 4) + scalar = data.GetMaxU32(&offset, byte_size); + else + scalar = data.GetMaxU64(&offset, byte_size); + if (is_signed) + scalar.SignExtend(byte_size * 8); + return bytes_read; + } + } else { + error.SetErrorStringWithFormat( + "byte size of %u is too large for integer scalar type", byte_size); + } + return 0; } #define USE_ALLOCATE_MEMORY_CACHE 1 -addr_t -Process::AllocateMemory(size_t size, uint32_t permissions, Error &error) -{ - if (GetPrivateState() != eStateStopped) - return LLDB_INVALID_ADDRESS; - -#if defined (USE_ALLOCATE_MEMORY_CACHE) - return m_allocated_memory_cache.AllocateMemory(size, permissions, error); +addr_t Process::AllocateMemory(size_t size, uint32_t permissions, + Error &error) { + if (GetPrivateState() != eStateStopped) + return LLDB_INVALID_ADDRESS; + +#if defined(USE_ALLOCATE_MEMORY_CACHE) + return m_allocated_memory_cache.AllocateMemory(size, permissions, error); #else - addr_t allocated_addr = DoAllocateMemory (size, permissions, error); - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::AllocateMemory(size=%" PRIu64 ", permissions=%s) => 0x%16.16" PRIx64 " (m_stop_id = %u m_memory_id = %u)", - (uint64_t)size, - GetPermissionsAsCString (permissions), - (uint64_t)allocated_addr, - m_mod_id.GetStopID(), - m_mod_id.GetMemoryID()); - return allocated_addr; + addr_t allocated_addr = DoAllocateMemory(size, permissions, error); + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::AllocateMemory(size=%" PRIu64 + ", permissions=%s) => 0x%16.16" PRIx64 + " (m_stop_id = %u m_memory_id = %u)", + (uint64_t)size, GetPermissionsAsCString(permissions), + (uint64_t)allocated_addr, m_mod_id.GetStopID(), + m_mod_id.GetMemoryID()); + return allocated_addr; #endif } -addr_t -Process::CallocateMemory(size_t size, uint32_t permissions, Error &error) -{ - addr_t return_addr = AllocateMemory(size, permissions, error); - if (error.Success()) - { - std::string buffer(size, 0); - WriteMemory(return_addr, buffer.c_str(), size, error); - } - return return_addr; +addr_t Process::CallocateMemory(size_t size, uint32_t permissions, + Error &error) { + addr_t return_addr = AllocateMemory(size, permissions, error); + if (error.Success()) { + std::string buffer(size, 0); + WriteMemory(return_addr, buffer.c_str(), size, error); + } + return return_addr; } -bool -Process::CanJIT () -{ - if (m_can_jit == eCanJITDontKnow) - { - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - Error err; - - uint64_t allocated_memory = AllocateMemory(8, - ePermissionsReadable | ePermissionsWritable | ePermissionsExecutable, - err); - - if (err.Success()) - { - m_can_jit = eCanJITYes; - if (log) - log->Printf ("Process::%s pid %" PRIu64 " allocation test passed, CanJIT () is true", __FUNCTION__, GetID ()); - } - else - { - m_can_jit = eCanJITNo; - if (log) - log->Printf ("Process::%s pid %" PRIu64 " allocation test failed, CanJIT () is false: %s", __FUNCTION__, GetID (), err.AsCString ()); - } - - DeallocateMemory (allocated_memory); +bool Process::CanJIT() { + if (m_can_jit == eCanJITDontKnow) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + Error err; + + uint64_t allocated_memory = AllocateMemory( + 8, ePermissionsReadable | ePermissionsWritable | ePermissionsExecutable, + err); + + if (err.Success()) { + m_can_jit = eCanJITYes; + if (log) + log->Printf("Process::%s pid %" PRIu64 + " allocation test passed, CanJIT () is true", + __FUNCTION__, GetID()); + } else { + m_can_jit = eCanJITNo; + if (log) + log->Printf("Process::%s pid %" PRIu64 + " allocation test failed, CanJIT () is false: %s", + __FUNCTION__, GetID(), err.AsCString()); } - - return m_can_jit == eCanJITYes; -} -void -Process::SetCanJIT (bool can_jit) -{ - m_can_jit = (can_jit ? eCanJITYes : eCanJITNo); -} + DeallocateMemory(allocated_memory); + } -void -Process::SetCanRunCode (bool can_run_code) -{ - SetCanJIT(can_run_code); - m_can_interpret_function_calls = can_run_code; + return m_can_jit == eCanJITYes; } -Error -Process::DeallocateMemory (addr_t ptr) -{ - Error error; -#if defined (USE_ALLOCATE_MEMORY_CACHE) - if (!m_allocated_memory_cache.DeallocateMemory(ptr)) - { - error.SetErrorStringWithFormat ("deallocation of memory at 0x%" PRIx64 " failed.", (uint64_t)ptr); - } -#else - error = DoDeallocateMemory (ptr); - - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::DeallocateMemory(addr=0x%16.16" PRIx64 ") => err = %s (m_stop_id = %u, m_memory_id = %u)", - ptr, - error.AsCString("SUCCESS"), - m_mod_id.GetStopID(), - m_mod_id.GetMemoryID()); -#endif - return error; +void Process::SetCanJIT(bool can_jit) { + m_can_jit = (can_jit ? eCanJITYes : eCanJITNo); } -ModuleSP -Process::ReadModuleFromMemory (const FileSpec& file_spec, - lldb::addr_t header_addr, - size_t size_to_read) -{ - Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); - if (log) - { - log->Printf ("Process::ReadModuleFromMemory reading %s binary from memory", file_spec.GetPath().c_str()); - } - ModuleSP module_sp (new Module (file_spec, ArchSpec())); - if (module_sp) - { - Error error; - ObjectFile *objfile = module_sp->GetMemoryObjectFile (shared_from_this(), header_addr, error, size_to_read); - if (objfile) - return module_sp; - } - return ModuleSP(); +void Process::SetCanRunCode(bool can_run_code) { + SetCanJIT(can_run_code); + m_can_interpret_function_calls = can_run_code; } -bool -Process::GetLoadAddressPermissions (lldb::addr_t load_addr, uint32_t &permissions) -{ - MemoryRegionInfo range_info; - permissions = 0; - Error error (GetMemoryRegionInfo (load_addr, range_info)); - if (!error.Success()) - return false; - if (range_info.GetReadable() == MemoryRegionInfo::eDontKnow - || range_info.GetWritable() == MemoryRegionInfo::eDontKnow - || range_info.GetExecutable() == MemoryRegionInfo::eDontKnow) - { - return false; - } +Error Process::DeallocateMemory(addr_t ptr) { + Error error; +#if defined(USE_ALLOCATE_MEMORY_CACHE) + if (!m_allocated_memory_cache.DeallocateMemory(ptr)) { + error.SetErrorStringWithFormat( + "deallocation of memory at 0x%" PRIx64 " failed.", (uint64_t)ptr); + } +#else + error = DoDeallocateMemory(ptr); + + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::DeallocateMemory(addr=0x%16.16" PRIx64 + ") => err = %s (m_stop_id = %u, m_memory_id = %u)", + ptr, error.AsCString("SUCCESS"), m_mod_id.GetStopID(), + m_mod_id.GetMemoryID()); +#endif + return error; +} + +ModuleSP Process::ReadModuleFromMemory(const FileSpec &file_spec, + lldb::addr_t header_addr, + size_t size_to_read) { + Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST); + if (log) { + log->Printf("Process::ReadModuleFromMemory reading %s binary from memory", + file_spec.GetPath().c_str()); + } + ModuleSP module_sp(new Module(file_spec, ArchSpec())); + if (module_sp) { + Error error; + ObjectFile *objfile = module_sp->GetMemoryObjectFile( + shared_from_this(), header_addr, error, size_to_read); + if (objfile) + return module_sp; + } + return ModuleSP(); +} + +bool Process::GetLoadAddressPermissions(lldb::addr_t load_addr, + uint32_t &permissions) { + MemoryRegionInfo range_info; + permissions = 0; + Error error(GetMemoryRegionInfo(load_addr, range_info)); + if (!error.Success()) + return false; + if (range_info.GetReadable() == MemoryRegionInfo::eDontKnow || + range_info.GetWritable() == MemoryRegionInfo::eDontKnow || + range_info.GetExecutable() == MemoryRegionInfo::eDontKnow) { + return false; + } - if (range_info.GetReadable() == MemoryRegionInfo::eYes) - permissions |= lldb::ePermissionsReadable; + if (range_info.GetReadable() == MemoryRegionInfo::eYes) + permissions |= lldb::ePermissionsReadable; - if (range_info.GetWritable() == MemoryRegionInfo::eYes) - permissions |= lldb::ePermissionsWritable; + if (range_info.GetWritable() == MemoryRegionInfo::eYes) + permissions |= lldb::ePermissionsWritable; - if (range_info.GetExecutable() == MemoryRegionInfo::eYes) - permissions |= lldb::ePermissionsExecutable; + if (range_info.GetExecutable() == MemoryRegionInfo::eYes) + permissions |= lldb::ePermissionsExecutable; - return true; + return true; } -Error -Process::EnableWatchpoint (Watchpoint *watchpoint, bool notify) -{ - Error error; - error.SetErrorString("watchpoints are not supported"); - return error; +Error Process::EnableWatchpoint(Watchpoint *watchpoint, bool notify) { + Error error; + error.SetErrorString("watchpoints are not supported"); + return error; } -Error -Process::DisableWatchpoint (Watchpoint *watchpoint, bool notify) -{ - Error error; - error.SetErrorString("watchpoints are not supported"); - return error; +Error Process::DisableWatchpoint(Watchpoint *watchpoint, bool notify) { + Error error; + error.SetErrorString("watchpoints are not supported"); + return error; } StateType -Process::WaitForProcessStopPrivate (const TimeValue *timeout, EventSP &event_sp) -{ - StateType state; - // Now wait for the process to launch and return control to us, and then - // call DidLaunch: - while (true) - { - event_sp.reset(); - state = WaitForStateChangedEventsPrivate (timeout, event_sp); +Process::WaitForProcessStopPrivate(EventSP &event_sp, + const Timeout<std::micro> &timeout) { + StateType state; + // Now wait for the process to launch and return control to us, and then + // call DidLaunch: + while (true) { + event_sp.reset(); + state = GetStateChangedEventsPrivate(event_sp, timeout); - if (StateIsStoppedState(state, false)) - break; + if (StateIsStoppedState(state, false)) + break; - // If state is invalid, then we timed out - if (state == eStateInvalid) - break; + // If state is invalid, then we timed out + if (state == eStateInvalid) + break; - if (event_sp) - HandlePrivateEvent (event_sp); - } - return state; + if (event_sp) + HandlePrivateEvent(event_sp); + } + return state; } -void -Process::LoadOperatingSystemPlugin(bool flush) -{ - if (flush) - m_thread_list.Clear(); - m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); - if (flush) - Flush(); +void Process::LoadOperatingSystemPlugin(bool flush) { + if (flush) + m_thread_list.Clear(); + m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); + if (flush) + Flush(); } -Error -Process::Launch (ProcessLaunchInfo &launch_info) -{ - Error error; - m_abi_sp.reset(); - m_dyld_ap.reset(); - m_jit_loaders_ap.reset(); - m_system_runtime_ap.reset(); - m_os_ap.reset(); - m_process_input_reader.reset(); - m_stop_info_override_callback = nullptr; - - Module *exe_module = GetTarget().GetExecutableModulePointer(); - if (exe_module) - { - char local_exec_file_path[PATH_MAX]; - char platform_exec_file_path[PATH_MAX]; - exe_module->GetFileSpec().GetPath(local_exec_file_path, sizeof(local_exec_file_path)); - exe_module->GetPlatformFileSpec().GetPath(platform_exec_file_path, sizeof(platform_exec_file_path)); - if (exe_module->GetFileSpec().Exists()) - { - // Install anything that might need to be installed prior to launching. - // For host systems, this will do nothing, but if we are connected to a - // remote platform it will install any needed binaries - error = GetTarget().Install(&launch_info); - if (error.Fail()) - return error; - - if (PrivateStateThreadIsValid ()) - PausePrivateStateThread (); - - error = WillLaunch (exe_module); - if (error.Success()) - { - const bool restarted = false; - SetPublicState (eStateLaunching, restarted); - m_should_detach = false; - - if (m_public_run_lock.TrySetRunning()) - { - // Now launch using these arguments. - error = DoLaunch (exe_module, launch_info); - } - else - { - // This shouldn't happen - error.SetErrorString("failed to acquire process run lock"); - } +Error Process::Launch(ProcessLaunchInfo &launch_info) { + Error error; + m_abi_sp.reset(); + m_dyld_ap.reset(); + m_jit_loaders_ap.reset(); + m_system_runtime_ap.reset(); + m_os_ap.reset(); + m_process_input_reader.reset(); + m_stop_info_override_callback = nullptr; + + Module *exe_module = GetTarget().GetExecutableModulePointer(); + if (exe_module) { + char local_exec_file_path[PATH_MAX]; + char platform_exec_file_path[PATH_MAX]; + exe_module->GetFileSpec().GetPath(local_exec_file_path, + sizeof(local_exec_file_path)); + exe_module->GetPlatformFileSpec().GetPath(platform_exec_file_path, + sizeof(platform_exec_file_path)); + if (exe_module->GetFileSpec().Exists()) { + // Install anything that might need to be installed prior to launching. + // For host systems, this will do nothing, but if we are connected to a + // remote platform it will install any needed binaries + error = GetTarget().Install(&launch_info); + if (error.Fail()) + return error; - if (error.Fail()) - { - if (GetID() != LLDB_INVALID_PROCESS_ID) - { - SetID (LLDB_INVALID_PROCESS_ID); - const char *error_string = error.AsCString(); - if (error_string == nullptr) - error_string = "launch failed"; - SetExitStatus (-1, error_string); - } - } - else - { - EventSP event_sp; - TimeValue timeout_time; - timeout_time = TimeValue::Now(); - timeout_time.OffsetWithSeconds(10); - StateType state = WaitForProcessStopPrivate(&timeout_time, event_sp); - - if (state == eStateInvalid || !event_sp) - { - // We were able to launch the process, but we failed to - // catch the initial stop. - error.SetErrorString ("failed to catch stop after launch"); - SetExitStatus (0, "failed to catch stop after launch"); - Destroy(false); - } - else if (state == eStateStopped || state == eStateCrashed) - { - DidLaunch (); + if (PrivateStateThreadIsValid()) + PausePrivateStateThread(); - DynamicLoader *dyld = GetDynamicLoader (); - if (dyld) - dyld->DidLaunch(); + error = WillLaunch(exe_module); + if (error.Success()) { + const bool restarted = false; + SetPublicState(eStateLaunching, restarted); + m_should_detach = false; - GetJITLoaders().DidLaunch(); + if (m_public_run_lock.TrySetRunning()) { + // Now launch using these arguments. + error = DoLaunch(exe_module, launch_info); + } else { + // This shouldn't happen + error.SetErrorString("failed to acquire process run lock"); + } - SystemRuntime *system_runtime = GetSystemRuntime (); - if (system_runtime) - system_runtime->DidLaunch(); + if (error.Fail()) { + if (GetID() != LLDB_INVALID_PROCESS_ID) { + SetID(LLDB_INVALID_PROCESS_ID); + const char *error_string = error.AsCString(); + if (error_string == nullptr) + error_string = "launch failed"; + SetExitStatus(-1, error_string); + } + } else { + EventSP event_sp; + StateType state = WaitForProcessStopPrivate(event_sp, seconds(10)); + + if (state == eStateInvalid || !event_sp) { + // We were able to launch the process, but we failed to + // catch the initial stop. + error.SetErrorString("failed to catch stop after launch"); + SetExitStatus(0, "failed to catch stop after launch"); + Destroy(false); + } else if (state == eStateStopped || state == eStateCrashed) { + DidLaunch(); - LoadOperatingSystemPlugin(false); + DynamicLoader *dyld = GetDynamicLoader(); + if (dyld) + dyld->DidLaunch(); - // Note, the stop event was consumed above, but not handled. This was done - // to give DidLaunch a chance to run. The target is either stopped or crashed. - // Directly set the state. This is done to prevent a stop message with a bunch - // of spurious output on thread status, as well as not pop a ProcessIOHandler. - SetPublicState(state, false); + GetJITLoaders().DidLaunch(); - if (PrivateStateThreadIsValid ()) - ResumePrivateStateThread (); - else - StartPrivateStateThread (); + SystemRuntime *system_runtime = GetSystemRuntime(); + if (system_runtime) + system_runtime->DidLaunch(); - m_stop_info_override_callback = GetTarget().GetArchitecture().GetStopInfoOverrideCallback(); + LoadOperatingSystemPlugin(false); - // Target was stopped at entry as was intended. Need to notify the listeners - // about it. - if (state == eStateStopped && launch_info.GetFlags().Test(eLaunchFlagStopAtEntry)) - HandlePrivateEvent(event_sp); - } - else if (state == eStateExited) - { - // We exited while trying to launch somehow. Don't call DidLaunch as that's - // not likely to work, and return an invalid pid. - HandlePrivateEvent (event_sp); - } - } - } - } - else - { - error.SetErrorStringWithFormat("file doesn't exist: '%s'", local_exec_file_path); + // Note, the stop event was consumed above, but not handled. This + // was done + // to give DidLaunch a chance to run. The target is either stopped + // or crashed. + // Directly set the state. This is done to prevent a stop message + // with a bunch + // of spurious output on thread status, as well as not pop a + // ProcessIOHandler. + SetPublicState(state, false); + + if (PrivateStateThreadIsValid()) + ResumePrivateStateThread(); + else + StartPrivateStateThread(); + + m_stop_info_override_callback = + GetTarget().GetArchitecture().GetStopInfoOverrideCallback(); + + // Target was stopped at entry as was intended. Need to notify the + // listeners + // about it. + if (state == eStateStopped && + launch_info.GetFlags().Test(eLaunchFlagStopAtEntry)) + HandlePrivateEvent(event_sp); + } else if (state == eStateExited) { + // We exited while trying to launch somehow. Don't call DidLaunch + // as that's + // not likely to work, and return an invalid pid. + HandlePrivateEvent(event_sp); + } } + } + } else { + error.SetErrorStringWithFormat("file doesn't exist: '%s'", + local_exec_file_path); } - return error; + } + return error; } -Error -Process::LoadCore () -{ - Error error = DoLoadCore(); - if (error.Success()) - { - ListenerSP listener_sp (Listener::MakeListener("lldb.process.load_core_listener")); - HijackProcessEvents(listener_sp); +Error Process::LoadCore() { + Error error = DoLoadCore(); + if (error.Success()) { + ListenerSP listener_sp( + Listener::MakeListener("lldb.process.load_core_listener")); + HijackProcessEvents(listener_sp); - if (PrivateStateThreadIsValid ()) - ResumePrivateStateThread (); - else - StartPrivateStateThread (); - - DynamicLoader *dyld = GetDynamicLoader (); - if (dyld) - dyld->DidAttach(); - - GetJITLoaders().DidAttach(); - - SystemRuntime *system_runtime = GetSystemRuntime (); - if (system_runtime) - system_runtime->DidAttach(); - - m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); - // We successfully loaded a core file, now pretend we stopped so we can - // show all of the threads in the core file and explore the crashed - // state. - SetPrivateState (eStateStopped); - - // Wait indefinitely for a stopped event since we just posted one above... - lldb::EventSP event_sp; - listener_sp->WaitForEvent (nullptr, event_sp); - StateType state = ProcessEventData::GetStateFromEvent(event_sp.get()); - - if (!StateIsStoppedState (state, false)) - { - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::Halt() failed to stop, state is: %s", StateAsCString(state)); - error.SetErrorString ("Did not get stopped event after loading the core file."); - } - RestoreProcessEvents (); + if (PrivateStateThreadIsValid()) + ResumePrivateStateThread(); + else + StartPrivateStateThread(); + + DynamicLoader *dyld = GetDynamicLoader(); + if (dyld) + dyld->DidAttach(); + + GetJITLoaders().DidAttach(); + + SystemRuntime *system_runtime = GetSystemRuntime(); + if (system_runtime) + system_runtime->DidAttach(); + + m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); + // We successfully loaded a core file, now pretend we stopped so we can + // show all of the threads in the core file and explore the crashed + // state. + SetPrivateState(eStateStopped); + + // Wait indefinitely for a stopped event since we just posted one above... + lldb::EventSP event_sp; + listener_sp->GetEvent(event_sp, llvm::None); + StateType state = ProcessEventData::GetStateFromEvent(event_sp.get()); + + if (!StateIsStoppedState(state, false)) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::Halt() failed to stop, state is: %s", + StateAsCString(state)); + error.SetErrorString( + "Did not get stopped event after loading the core file."); } - return error; + RestoreProcessEvents(); + } + return error; } -DynamicLoader * -Process::GetDynamicLoader () -{ - if (!m_dyld_ap) - m_dyld_ap.reset(DynamicLoader::FindPlugin(this, nullptr)); - return m_dyld_ap.get(); +DynamicLoader *Process::GetDynamicLoader() { + if (!m_dyld_ap) + m_dyld_ap.reset(DynamicLoader::FindPlugin(this, nullptr)); + return m_dyld_ap.get(); } -const lldb::DataBufferSP -Process::GetAuxvData() -{ - return DataBufferSP (); -} +const lldb::DataBufferSP Process::GetAuxvData() { return DataBufferSP(); } -JITLoaderList & -Process::GetJITLoaders () -{ - if (!m_jit_loaders_ap) - { - m_jit_loaders_ap.reset(new JITLoaderList()); - JITLoader::LoadPlugins(this, *m_jit_loaders_ap); - } - return *m_jit_loaders_ap; +JITLoaderList &Process::GetJITLoaders() { + if (!m_jit_loaders_ap) { + m_jit_loaders_ap.reset(new JITLoaderList()); + JITLoader::LoadPlugins(this, *m_jit_loaders_ap); + } + return *m_jit_loaders_ap; } -SystemRuntime * -Process::GetSystemRuntime () -{ - if (!m_system_runtime_ap) - m_system_runtime_ap.reset(SystemRuntime::FindPlugin(this)); - return m_system_runtime_ap.get(); +SystemRuntime *Process::GetSystemRuntime() { + if (!m_system_runtime_ap) + m_system_runtime_ap.reset(SystemRuntime::FindPlugin(this)); + return m_system_runtime_ap.get(); } -Process::AttachCompletionHandler::AttachCompletionHandler (Process *process, uint32_t exec_count) : - NextEventAction (process), - m_exec_count (exec_count) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::AttachCompletionHandler::%s process=%p, exec_count=%" PRIu32, __FUNCTION__, static_cast<void*>(process), exec_count); +Process::AttachCompletionHandler::AttachCompletionHandler(Process *process, + uint32_t exec_count) + : NextEventAction(process), m_exec_count(exec_count) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf( + "Process::AttachCompletionHandler::%s process=%p, exec_count=%" PRIu32, + __FUNCTION__, static_cast<void *>(process), exec_count); } Process::NextEventAction::EventActionResult -Process::AttachCompletionHandler::PerformAction (lldb::EventSP &event_sp) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); +Process::AttachCompletionHandler::PerformAction(lldb::EventSP &event_sp) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - StateType state = ProcessEventData::GetStateFromEvent (event_sp.get()); - if (log) - log->Printf ("Process::AttachCompletionHandler::%s called with state %s (%d)", __FUNCTION__, StateAsCString(state), static_cast<int> (state)); + StateType state = ProcessEventData::GetStateFromEvent(event_sp.get()); + if (log) + log->Printf( + "Process::AttachCompletionHandler::%s called with state %s (%d)", + __FUNCTION__, StateAsCString(state), static_cast<int>(state)); - switch (state) - { - case eStateAttaching: - return eEventActionSuccess; - - case eStateRunning: - case eStateConnected: - return eEventActionRetry; - - case eStateStopped: - case eStateCrashed: - // During attach, prior to sending the eStateStopped event, - // lldb_private::Process subclasses must set the new process ID. - assert (m_process->GetID() != LLDB_INVALID_PROCESS_ID); - // We don't want these events to be reported, so go set the ShouldReportStop here: - m_process->GetThreadList().SetShouldReportStop (eVoteNo); - - if (m_exec_count > 0) - { - --m_exec_count; + switch (state) { + case eStateAttaching: + return eEventActionSuccess; - if (log) - log->Printf ("Process::AttachCompletionHandler::%s state %s: reduced remaining exec count to %" PRIu32 ", requesting resume", __FUNCTION__, StateAsCString(state), m_exec_count); + case eStateRunning: + case eStateConnected: + return eEventActionRetry; - RequestResume(); - return eEventActionRetry; - } - else - { - if (log) - log->Printf ("Process::AttachCompletionHandler::%s state %s: no more execs expected to start, continuing with attach", __FUNCTION__, StateAsCString(state)); + case eStateStopped: + case eStateCrashed: + // During attach, prior to sending the eStateStopped event, + // lldb_private::Process subclasses must set the new process ID. + assert(m_process->GetID() != LLDB_INVALID_PROCESS_ID); + // We don't want these events to be reported, so go set the ShouldReportStop + // here: + m_process->GetThreadList().SetShouldReportStop(eVoteNo); - m_process->CompleteAttach (); - return eEventActionSuccess; - } - break; + if (m_exec_count > 0) { + --m_exec_count; - default: - case eStateExited: - case eStateInvalid: - break; - } + if (log) + log->Printf("Process::AttachCompletionHandler::%s state %s: reduced " + "remaining exec count to %" PRIu32 ", requesting resume", + __FUNCTION__, StateAsCString(state), m_exec_count); - m_exit_string.assign ("No valid Process"); - return eEventActionExit; -} + RequestResume(); + return eEventActionRetry; + } else { + if (log) + log->Printf("Process::AttachCompletionHandler::%s state %s: no more " + "execs expected to start, continuing with attach", + __FUNCTION__, StateAsCString(state)); -Process::NextEventAction::EventActionResult -Process::AttachCompletionHandler::HandleBeingInterrupted() -{ - return eEventActionSuccess; -} + m_process->CompleteAttach(); + return eEventActionSuccess; + } + break; -const char * -Process::AttachCompletionHandler::GetExitString () -{ - return m_exit_string.c_str(); -} + default: + case eStateExited: + case eStateInvalid: + break; + } -ListenerSP -ProcessAttachInfo::GetListenerForProcess (Debugger &debugger) -{ - if (m_listener_sp) - return m_listener_sp; - else - return debugger.GetListener(); + m_exit_string.assign("No valid Process"); + return eEventActionExit; } -Error -Process::Attach (ProcessAttachInfo &attach_info) -{ - m_abi_sp.reset(); - m_process_input_reader.reset(); - m_dyld_ap.reset(); - m_jit_loaders_ap.reset(); - m_system_runtime_ap.reset(); - m_os_ap.reset(); - m_stop_info_override_callback = nullptr; - - lldb::pid_t attach_pid = attach_info.GetProcessID(); - Error error; - if (attach_pid == LLDB_INVALID_PROCESS_ID) - { - char process_name[PATH_MAX]; - - if (attach_info.GetExecutableFile().GetPath (process_name, sizeof(process_name))) - { - const bool wait_for_launch = attach_info.GetWaitForLaunch(); - - if (wait_for_launch) - { - error = WillAttachToProcessWithName(process_name, wait_for_launch); - if (error.Success()) - { - if (m_public_run_lock.TrySetRunning()) - { - m_should_detach = true; - const bool restarted = false; - SetPublicState (eStateAttaching, restarted); - // Now attach using these arguments. - error = DoAttachToProcessWithName (process_name, attach_info); - } - else - { - // This shouldn't happen - error.SetErrorString("failed to acquire process run lock"); - } - - if (error.Fail()) - { - if (GetID() != LLDB_INVALID_PROCESS_ID) - { - SetID (LLDB_INVALID_PROCESS_ID); - if (error.AsCString() == nullptr) - error.SetErrorString("attach failed"); - - SetExitStatus(-1, error.AsCString()); - } - } - else - { - SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); - StartPrivateStateThread(); - } - return error; - } - } - else - { - ProcessInstanceInfoList process_infos; - PlatformSP platform_sp (GetTarget().GetPlatform ()); - - if (platform_sp) - { - ProcessInstanceInfoMatch match_info; - match_info.GetProcessInfo() = attach_info; - match_info.SetNameMatchType (eNameMatchEquals); - platform_sp->FindProcesses (match_info, process_infos); - const uint32_t num_matches = process_infos.GetSize(); - if (num_matches == 1) - { - attach_pid = process_infos.GetProcessIDAtIndex(0); - // Fall through and attach using the above process ID - } - else - { - match_info.GetProcessInfo().GetExecutableFile().GetPath (process_name, sizeof(process_name)); - if (num_matches > 1) - { - StreamString s; - ProcessInstanceInfo::DumpTableHeader (s, platform_sp.get(), true, false); - for (size_t i = 0; i < num_matches; i++) - { - process_infos.GetProcessInfoAtIndex(i).DumpAsTableRow(s, platform_sp.get(), true, false); - } - error.SetErrorStringWithFormat ("more than one process named %s:\n%s", - process_name, - s.GetData()); - } - else - error.SetErrorStringWithFormat ("could not find a process named %s", process_name); - } - } - else - { - error.SetErrorString ("invalid platform, can't find processes by name"); - return error; - } +Process::NextEventAction::EventActionResult +Process::AttachCompletionHandler::HandleBeingInterrupted() { + return eEventActionSuccess; +} + +const char *Process::AttachCompletionHandler::GetExitString() { + return m_exit_string.c_str(); +} + +ListenerSP ProcessAttachInfo::GetListenerForProcess(Debugger &debugger) { + if (m_listener_sp) + return m_listener_sp; + else + return debugger.GetListener(); +} + +Error Process::Attach(ProcessAttachInfo &attach_info) { + m_abi_sp.reset(); + m_process_input_reader.reset(); + m_dyld_ap.reset(); + m_jit_loaders_ap.reset(); + m_system_runtime_ap.reset(); + m_os_ap.reset(); + m_stop_info_override_callback = nullptr; + + lldb::pid_t attach_pid = attach_info.GetProcessID(); + Error error; + if (attach_pid == LLDB_INVALID_PROCESS_ID) { + char process_name[PATH_MAX]; + + if (attach_info.GetExecutableFile().GetPath(process_name, + sizeof(process_name))) { + const bool wait_for_launch = attach_info.GetWaitForLaunch(); + + if (wait_for_launch) { + error = WillAttachToProcessWithName(process_name, wait_for_launch); + if (error.Success()) { + if (m_public_run_lock.TrySetRunning()) { + m_should_detach = true; + const bool restarted = false; + SetPublicState(eStateAttaching, restarted); + // Now attach using these arguments. + error = DoAttachToProcessWithName(process_name, attach_info); + } else { + // This shouldn't happen + error.SetErrorString("failed to acquire process run lock"); + } + + if (error.Fail()) { + if (GetID() != LLDB_INVALID_PROCESS_ID) { + SetID(LLDB_INVALID_PROCESS_ID); + if (error.AsCString() == nullptr) + error.SetErrorString("attach failed"); + + SetExitStatus(-1, error.AsCString()); } + } else { + SetNextEventAction(new Process::AttachCompletionHandler( + this, attach_info.GetResumeCount())); + StartPrivateStateThread(); + } + return error; } - else - { - error.SetErrorString ("invalid process name"); - } - } - - if (attach_pid != LLDB_INVALID_PROCESS_ID) - { - error = WillAttachToProcessWithID(attach_pid); - if (error.Success()) - { - - if (m_public_run_lock.TrySetRunning()) - { - // Now attach using these arguments. - m_should_detach = true; - const bool restarted = false; - SetPublicState (eStateAttaching, restarted); - error = DoAttachToProcessWithID (attach_pid, attach_info); - } - else - { - // This shouldn't happen - error.SetErrorString("failed to acquire process run lock"); - } - - if (error.Success()) - { - SetNextEventAction(new Process::AttachCompletionHandler(this, attach_info.GetResumeCount())); - StartPrivateStateThread(); - } - else - { - if (GetID() != LLDB_INVALID_PROCESS_ID) - SetID (LLDB_INVALID_PROCESS_ID); - - const char *error_string = error.AsCString(); - if (error_string == nullptr) - error_string = "attach failed"; - - SetExitStatus(-1, error_string); - } + } else { + ProcessInstanceInfoList process_infos; + PlatformSP platform_sp(GetTarget().GetPlatform()); + + if (platform_sp) { + ProcessInstanceInfoMatch match_info; + match_info.GetProcessInfo() = attach_info; + match_info.SetNameMatchType(eNameMatchEquals); + platform_sp->FindProcesses(match_info, process_infos); + const uint32_t num_matches = process_infos.GetSize(); + if (num_matches == 1) { + attach_pid = process_infos.GetProcessIDAtIndex(0); + // Fall through and attach using the above process ID + } else { + match_info.GetProcessInfo().GetExecutableFile().GetPath( + process_name, sizeof(process_name)); + if (num_matches > 1) { + StreamString s; + ProcessInstanceInfo::DumpTableHeader(s, platform_sp.get(), true, + false); + for (size_t i = 0; i < num_matches; i++) { + process_infos.GetProcessInfoAtIndex(i).DumpAsTableRow( + s, platform_sp.get(), true, false); + } + error.SetErrorStringWithFormat( + "more than one process named %s:\n%s", process_name, + s.GetData()); + } else + error.SetErrorStringWithFormat( + "could not find a process named %s", process_name); + } + } else { + error.SetErrorString( + "invalid platform, can't find processes by name"); + return error; } - } - return error; -} - -void -Process::CompleteAttach () -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_TARGET)); - if (log) - log->Printf ("Process::%s()", __FUNCTION__); - - // Let the process subclass figure out at much as it can about the process - // before we go looking for a dynamic loader plug-in. - ArchSpec process_arch; - DidAttach(process_arch); - - if (process_arch.IsValid()) - { + } + } else { + error.SetErrorString("invalid process name"); + } + } + + if (attach_pid != LLDB_INVALID_PROCESS_ID) { + error = WillAttachToProcessWithID(attach_pid); + if (error.Success()) { + + if (m_public_run_lock.TrySetRunning()) { + // Now attach using these arguments. + m_should_detach = true; + const bool restarted = false; + SetPublicState(eStateAttaching, restarted); + error = DoAttachToProcessWithID(attach_pid, attach_info); + } else { + // This shouldn't happen + error.SetErrorString("failed to acquire process run lock"); + } + + if (error.Success()) { + SetNextEventAction(new Process::AttachCompletionHandler( + this, attach_info.GetResumeCount())); + StartPrivateStateThread(); + } else { + if (GetID() != LLDB_INVALID_PROCESS_ID) + SetID(LLDB_INVALID_PROCESS_ID); + + const char *error_string = error.AsCString(); + if (error_string == nullptr) + error_string = "attach failed"; + + SetExitStatus(-1, error_string); + } + } + } + return error; +} + +void Process::CompleteAttach() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | + LIBLLDB_LOG_TARGET)); + if (log) + log->Printf("Process::%s()", __FUNCTION__); + + // Let the process subclass figure out at much as it can about the process + // before we go looking for a dynamic loader plug-in. + ArchSpec process_arch; + DidAttach(process_arch); + + if (process_arch.IsValid()) { + GetTarget().SetArchitecture(process_arch); + if (log) { + const char *triple_str = process_arch.GetTriple().getTriple().c_str(); + log->Printf("Process::%s replacing process architecture with DidAttach() " + "architecture: %s", + __FUNCTION__, triple_str ? triple_str : "<null>"); + } + } + + // We just attached. If we have a platform, ask it for the process + // architecture, and if it isn't + // the same as the one we've already set, switch architectures. + PlatformSP platform_sp(GetTarget().GetPlatform()); + assert(platform_sp); + if (platform_sp) { + const ArchSpec &target_arch = GetTarget().GetArchitecture(); + if (target_arch.IsValid() && + !platform_sp->IsCompatibleArchitecture(target_arch, false, nullptr)) { + ArchSpec platform_arch; + platform_sp = + platform_sp->GetPlatformForArchitecture(target_arch, &platform_arch); + if (platform_sp) { + GetTarget().SetPlatform(platform_sp); + GetTarget().SetArchitecture(platform_arch); + if (log) + log->Printf("Process::%s switching platform to %s and architecture " + "to %s based on info from attach", + __FUNCTION__, platform_sp->GetName().AsCString(""), + platform_arch.GetTriple().getTriple().c_str()); + } + } else if (!process_arch.IsValid()) { + ProcessInstanceInfo process_info; + GetProcessInfo(process_info); + const ArchSpec &process_arch = process_info.GetArchitecture(); + if (process_arch.IsValid() && + !GetTarget().GetArchitecture().IsExactMatch(process_arch)) { GetTarget().SetArchitecture(process_arch); if (log) - { - const char *triple_str = process_arch.GetTriple().getTriple().c_str (); - log->Printf ("Process::%s replacing process architecture with DidAttach() architecture: %s", - __FUNCTION__, - triple_str ? triple_str : "<null>"); - } + log->Printf("Process::%s switching architecture to %s based on info " + "the platform retrieved for pid %" PRIu64, + __FUNCTION__, + process_arch.GetTriple().getTriple().c_str(), GetID()); + } + } + } + + // We have completed the attach, now it is time to find the dynamic loader + // plug-in + DynamicLoader *dyld = GetDynamicLoader(); + if (dyld) { + dyld->DidAttach(); + if (log) { + ModuleSP exe_module_sp = GetTarget().GetExecutableModule(); + log->Printf("Process::%s after DynamicLoader::DidAttach(), target " + "executable is %s (using %s plugin)", + __FUNCTION__, + exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str() + : "<none>", + dyld->GetPluginName().AsCString("<unnamed>")); + } + } + + GetJITLoaders().DidAttach(); + + SystemRuntime *system_runtime = GetSystemRuntime(); + if (system_runtime) { + system_runtime->DidAttach(); + if (log) { + ModuleSP exe_module_sp = GetTarget().GetExecutableModule(); + log->Printf("Process::%s after SystemRuntime::DidAttach(), target " + "executable is %s (using %s plugin)", + __FUNCTION__, + exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str() + : "<none>", + system_runtime->GetPluginName().AsCString("<unnamed>")); + } + } + + m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); + // Figure out which one is the executable, and set that in our target: + const ModuleList &target_modules = GetTarget().GetImages(); + std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); + size_t num_modules = target_modules.GetSize(); + ModuleSP new_executable_module_sp; + + for (size_t i = 0; i < num_modules; i++) { + ModuleSP module_sp(target_modules.GetModuleAtIndexUnlocked(i)); + if (module_sp && module_sp->IsExecutable()) { + if (GetTarget().GetExecutableModulePointer() != module_sp.get()) + new_executable_module_sp = module_sp; + break; + } + } + if (new_executable_module_sp) { + GetTarget().SetExecutableModule(new_executable_module_sp, false); + if (log) { + ModuleSP exe_module_sp = GetTarget().GetExecutableModule(); + log->Printf( + "Process::%s after looping through modules, target executable is %s", + __FUNCTION__, + exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str() + : "<none>"); + } + } + + m_stop_info_override_callback = process_arch.GetStopInfoOverrideCallback(); +} + +Error Process::ConnectRemote(Stream *strm, llvm::StringRef remote_url) { + m_abi_sp.reset(); + m_process_input_reader.reset(); + + // Find the process and its architecture. Make sure it matches the + // architecture of the current Target, and if not adjust it. + + Error error(DoConnectRemote(strm, remote_url)); + if (error.Success()) { + if (GetID() != LLDB_INVALID_PROCESS_ID) { + EventSP event_sp; + StateType state = WaitForProcessStopPrivate(event_sp, llvm::None); + + if (state == eStateStopped || state == eStateCrashed) { + // If we attached and actually have a process on the other end, then + // this ended up being the equivalent of an attach. + CompleteAttach(); + + // This delays passing the stopped event to listeners till + // CompleteAttach gets a chance to complete... + HandlePrivateEvent(event_sp); + } } - // We just attached. If we have a platform, ask it for the process architecture, and if it isn't - // the same as the one we've already set, switch architectures. - PlatformSP platform_sp (GetTarget().GetPlatform ()); - assert(platform_sp); - if (platform_sp) - { - const ArchSpec &target_arch = GetTarget().GetArchitecture(); - if (target_arch.IsValid() && !platform_sp->IsCompatibleArchitecture(target_arch, false, nullptr)) - { - ArchSpec platform_arch; - platform_sp = platform_sp->GetPlatformForArchitecture (target_arch, &platform_arch); - if (platform_sp) - { - GetTarget().SetPlatform (platform_sp); - GetTarget().SetArchitecture(platform_arch); - if (log) - log->Printf ("Process::%s switching platform to %s and architecture to %s based on info from attach", __FUNCTION__, platform_sp->GetName().AsCString (""), platform_arch.GetTriple().getTriple().c_str ()); - } - } - else if (!process_arch.IsValid()) - { - ProcessInstanceInfo process_info; - GetProcessInfo(process_info); - const ArchSpec &process_arch = process_info.GetArchitecture(); - if (process_arch.IsValid() && !GetTarget().GetArchitecture().IsExactMatch(process_arch)) - { - GetTarget().SetArchitecture (process_arch); - if (log) - log->Printf ("Process::%s switching architecture to %s based on info the platform retrieved for pid %" PRIu64, __FUNCTION__, process_arch.GetTriple().getTriple().c_str (), GetID ()); - } - } - } - - // We have completed the attach, now it is time to find the dynamic loader - // plug-in - DynamicLoader *dyld = GetDynamicLoader (); - if (dyld) - { - dyld->DidAttach(); - if (log) - { - ModuleSP exe_module_sp = GetTarget().GetExecutableModule (); - log->Printf ("Process::%s after DynamicLoader::DidAttach(), target executable is %s (using %s plugin)", - __FUNCTION__, - exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str () : "<none>", - dyld->GetPluginName().AsCString ("<unnamed>")); + if (PrivateStateThreadIsValid()) + ResumePrivateStateThread(); + else + StartPrivateStateThread(); + } + return error; +} + +Error Process::PrivateResume() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | + LIBLLDB_LOG_STEP)); + if (log) + log->Printf("Process::PrivateResume() m_stop_id = %u, public state: %s " + "private state: %s", + m_mod_id.GetStopID(), StateAsCString(m_public_state.GetValue()), + StateAsCString(m_private_state.GetValue())); + + Error error(WillResume()); + // Tell the process it is about to resume before the thread list + if (error.Success()) { + // Now let the thread list know we are about to resume so it + // can let all of our threads know that they are about to be + // resumed. Threads will each be called with + // Thread::WillResume(StateType) where StateType contains the state + // that they are supposed to have when the process is resumed + // (suspended/running/stepping). Threads should also check + // their resume signal in lldb::Thread::GetResumeSignal() + // to see if they are supposed to start back up with a signal. + if (m_thread_list.WillResume()) { + // Last thing, do the PreResumeActions. + if (!RunPreResumeActions()) { + error.SetErrorStringWithFormat( + "Process::PrivateResume PreResumeActions failed, not resuming."); + } else { + m_mod_id.BumpResumeID(); + error = DoResume(); + if (error.Success()) { + DidResume(); + m_thread_list.DidResume(); + if (log) + log->Printf("Process thinks the process has resumed."); } - } + } + } else { + // Somebody wanted to run without running (e.g. we were faking a step from + // one frame of a set of inlined + // frames that share the same PC to another.) So generate a continue & a + // stopped event, + // and let the world handle them. + if (log) + log->Printf( + "Process::PrivateResume() asked to simulate a start & stop."); + + SetPrivateState(eStateRunning); + SetPrivateState(eStateStopped); + } + } else if (log) + log->Printf("Process::PrivateResume() got an error \"%s\".", + error.AsCString("<unknown error>")); + return error; +} + +Error Process::Halt(bool clear_thread_plans, bool use_run_lock) { + if (!StateIsRunningState(m_public_state.GetValue())) + return Error("Process is not running."); + + // Don't clear the m_clear_thread_plans_on_stop, only set it to true if + // in case it was already set and some thread plan logic calls halt on its + // own. + m_clear_thread_plans_on_stop |= clear_thread_plans; + + ListenerSP halt_listener_sp( + Listener::MakeListener("lldb.process.halt_listener")); + HijackProcessEvents(halt_listener_sp); + + EventSP event_sp; + + SendAsyncInterrupt(); + + if (m_public_state.GetValue() == eStateAttaching) { + // Don't hijack and eat the eStateExited as the code that was doing + // the attach will be waiting for this event... + RestoreProcessEvents(); + SetExitStatus(SIGKILL, "Cancelled async attach."); + Destroy(false); + return Error(); + } - GetJITLoaders().DidAttach(); + // Wait for 10 second for the process to stop. + StateType state = WaitForProcessToStop( + seconds(10), &event_sp, true, halt_listener_sp, nullptr, use_run_lock); + RestoreProcessEvents(); - SystemRuntime *system_runtime = GetSystemRuntime (); - if (system_runtime) - { - system_runtime->DidAttach(); - if (log) - { - ModuleSP exe_module_sp = GetTarget().GetExecutableModule (); - log->Printf ("Process::%s after SystemRuntime::DidAttach(), target executable is %s (using %s plugin)", - __FUNCTION__, - exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str () : "<none>", - system_runtime->GetPluginName().AsCString("<unnamed>")); - } - } + if (state == eStateInvalid || !event_sp) { + // We timed out and didn't get a stop event... + return Error("Halt timed out. State = %s", StateAsCString(GetState())); + } - m_os_ap.reset(OperatingSystem::FindPlugin(this, nullptr)); - // Figure out which one is the executable, and set that in our target: - const ModuleList &target_modules = GetTarget().GetImages(); - std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); - size_t num_modules = target_modules.GetSize(); - ModuleSP new_executable_module_sp; - - for (size_t i = 0; i < num_modules; i++) - { - ModuleSP module_sp (target_modules.GetModuleAtIndexUnlocked (i)); - if (module_sp && module_sp->IsExecutable()) - { - if (GetTarget().GetExecutableModulePointer() != module_sp.get()) - new_executable_module_sp = module_sp; - break; - } - } - if (new_executable_module_sp) - { - GetTarget().SetExecutableModule (new_executable_module_sp, false); - if (log) - { - ModuleSP exe_module_sp = GetTarget().GetExecutableModule (); - log->Printf ("Process::%s after looping through modules, target executable is %s", - __FUNCTION__, - exe_module_sp ? exe_module_sp->GetFileSpec().GetPath().c_str () : "<none>"); - } - } + BroadcastEvent(event_sp); - m_stop_info_override_callback = process_arch.GetStopInfoOverrideCallback(); + return Error(); } -Error -Process::ConnectRemote (Stream *strm, const char *remote_url) -{ - m_abi_sp.reset(); - m_process_input_reader.reset(); - - // Find the process and its architecture. Make sure it matches the architecture - // of the current Target, and if not adjust it. - - Error error (DoConnectRemote (strm, remote_url)); - if (error.Success()) - { - if (GetID() != LLDB_INVALID_PROCESS_ID) - { - EventSP event_sp; - StateType state = WaitForProcessStopPrivate(nullptr, event_sp); - - if (state == eStateStopped || state == eStateCrashed) - { - // If we attached and actually have a process on the other end, then - // this ended up being the equivalent of an attach. - CompleteAttach (); - - // This delays passing the stopped event to listeners till - // CompleteAttach gets a chance to complete... - HandlePrivateEvent (event_sp); - } - } +Error Process::StopForDestroyOrDetach(lldb::EventSP &exit_event_sp) { + Error error; - if (PrivateStateThreadIsValid ()) - ResumePrivateStateThread (); - else - StartPrivateStateThread (); - } - return error; -} - -Error -Process::PrivateResume () -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_STEP)); + // Check both the public & private states here. If we're hung evaluating an + // expression, for instance, then + // the public state will be stopped, but we still need to interrupt. + if (m_public_state.GetValue() == eStateRunning || + m_private_state.GetValue() == eStateRunning) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); if (log) - log->Printf("Process::PrivateResume() m_stop_id = %u, public state: %s private state: %s", - m_mod_id.GetStopID(), - StateAsCString(m_public_state.GetValue()), - StateAsCString(m_private_state.GetValue())); + log->Printf("Process::%s() About to stop.", __FUNCTION__); - Error error (WillResume()); - // Tell the process it is about to resume before the thread list - if (error.Success()) - { - // Now let the thread list know we are about to resume so it - // can let all of our threads know that they are about to be - // resumed. Threads will each be called with - // Thread::WillResume(StateType) where StateType contains the state - // that they are supposed to have when the process is resumed - // (suspended/running/stepping). Threads should also check - // their resume signal in lldb::Thread::GetResumeSignal() - // to see if they are supposed to start back up with a signal. - if (m_thread_list.WillResume()) - { - // Last thing, do the PreResumeActions. - if (!RunPreResumeActions()) - { - error.SetErrorStringWithFormat ("Process::PrivateResume PreResumeActions failed, not resuming."); - } - else - { - m_mod_id.BumpResumeID(); - error = DoResume(); - if (error.Success()) - { - DidResume(); - m_thread_list.DidResume(); - if (log) - log->Printf ("Process thinks the process has resumed."); - } - } - } - else - { - // Somebody wanted to run without running (e.g. we were faking a step from one frame of a set of inlined - // frames that share the same PC to another.) So generate a continue & a stopped event, - // and let the world handle them. - if (log) - log->Printf ("Process::PrivateResume() asked to simulate a start & stop."); - - SetPrivateState(eStateRunning); - SetPrivateState(eStateStopped); - } - } - else if (log) - log->Printf ("Process::PrivateResume() got an error \"%s\".", error.AsCString("<unknown error>")); - return error; -} - -Error -Process::Halt (bool clear_thread_plans, bool use_run_lock) -{ - if (! StateIsRunningState(m_public_state.GetValue())) - return Error("Process is not running."); - - // Don't clear the m_clear_thread_plans_on_stop, only set it to true if - // in case it was already set and some thread plan logic calls halt on its - // own. - m_clear_thread_plans_on_stop |= clear_thread_plans; - - ListenerSP halt_listener_sp (Listener::MakeListener("lldb.process.halt_listener")); - HijackProcessEvents(halt_listener_sp); + ListenerSP listener_sp( + Listener::MakeListener("lldb.Process.StopForDestroyOrDetach.hijack")); + HijackProcessEvents(listener_sp); - EventSP event_sp; - SendAsyncInterrupt(); - if (m_public_state.GetValue() == eStateAttaching) - { - // Don't hijack and eat the eStateExited as the code that was doing - // the attach will be waiting for this event... - RestoreProcessEvents(); - SetExitStatus(SIGKILL, "Cancelled async attach."); - Destroy (false); - return Error(); - } + // Consume the interrupt event. + StateType state = + WaitForProcessToStop(seconds(10), &exit_event_sp, true, listener_sp); - // Wait for 10 second for the process to stop. - TimeValue timeout_time; - timeout_time = TimeValue::Now(); - timeout_time.OffsetWithSeconds(10); - StateType state = WaitForProcessToStop(&timeout_time, &event_sp, true, halt_listener_sp, - nullptr, use_run_lock); RestoreProcessEvents(); - if (state == eStateInvalid || ! event_sp) - { - // We timed out and didn't get a stop event... - return Error("Halt timed out. State = %s", StateAsCString(GetState())); + // If the process exited while we were waiting for it to stop, put the + // exited event into + // the shared pointer passed in and return. Our caller doesn't need to do + // anything else, since + // they don't have a process anymore... + + if (state == eStateExited || m_private_state.GetValue() == eStateExited) { + if (log) + log->Printf("Process::%s() Process exited while waiting to stop.", + __FUNCTION__); + return error; + } else + exit_event_sp.reset(); // It is ok to consume any non-exit stop events + + if (state != eStateStopped) { + if (log) + log->Printf("Process::%s() failed to stop, state is: %s", __FUNCTION__, + StateAsCString(state)); + // If we really couldn't stop the process then we should just error out + // here, but if the + // lower levels just bobbled sending the event and we really are stopped, + // then continue on. + StateType private_state = m_private_state.GetValue(); + if (private_state != eStateStopped) { + return Error("Attempt to stop the target in order to detach timed out. " + "State = %s", + StateAsCString(GetState())); + } + } + } + return error; +} + +Error Process::Detach(bool keep_stopped) { + EventSP exit_event_sp; + Error error; + m_destroy_in_process = true; + + error = WillDetach(); + + if (error.Success()) { + if (DetachRequiresHalt()) { + error = StopForDestroyOrDetach(exit_event_sp); + if (!error.Success()) { + m_destroy_in_process = false; + return error; + } else if (exit_event_sp) { + // We shouldn't need to do anything else here. There's no process left + // to detach from... + StopPrivateStateThread(); + m_destroy_in_process = false; + return error; + } } - BroadcastEvent(event_sp); - - return Error(); -} - -Error -Process::StopForDestroyOrDetach(lldb::EventSP &exit_event_sp) -{ - Error error; - if (m_public_state.GetValue() == eStateRunning) - { - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::%s() About to stop.", __FUNCTION__); - - ListenerSP listener_sp (Listener::MakeListener("lldb.Process.StopForDestroyOrDetach.hijack")); - HijackProcessEvents(listener_sp); - - SendAsyncInterrupt(); - - // Consume the interrupt event. - TimeValue timeout (TimeValue::Now()); - timeout.OffsetWithSeconds(10); - - StateType state = WaitForProcessToStop (&timeout, &exit_event_sp, true, listener_sp); - - RestoreProcessEvents(); - - // If the process exited while we were waiting for it to stop, put the exited event into - // the shared pointer passed in and return. Our caller doesn't need to do anything else, since - // they don't have a process anymore... - - if (state == eStateExited || m_private_state.GetValue() == eStateExited) - { - if (log) - log->Printf("Process::%s() Process exited while waiting to stop.", __FUNCTION__); - return error; - } - else - exit_event_sp.reset(); // It is ok to consume any non-exit stop events - - if (state != eStateStopped) - { - if (log) - log->Printf("Process::%s() failed to stop, state is: %s", __FUNCTION__, StateAsCString(state)); - // If we really couldn't stop the process then we should just error out here, but if the - // lower levels just bobbled sending the event and we really are stopped, then continue on. - StateType private_state = m_private_state.GetValue(); - if (private_state != eStateStopped) - { - return Error("Attempt to stop the target in order to detach timed out. State = %s", StateAsCString(GetState())); - } - } + m_thread_list.DiscardThreadPlans(); + DisableAllBreakpointSites(); + + error = DoDetach(keep_stopped); + if (error.Success()) { + DidDetach(); + StopPrivateStateThread(); + } else { + return error; + } + } + m_destroy_in_process = false; + + // If we exited when we were waiting for a process to stop, then + // forward the event here so we don't lose the event + if (exit_event_sp) { + // Directly broadcast our exited event because we shut down our + // private state thread above + BroadcastEvent(exit_event_sp); + } + + // If we have been interrupted (to kill us) in the middle of running, we may + // not end up propagating + // the last events through the event system, in which case we might strand the + // write lock. Unlock + // it here so when we do to tear down the process we don't get an error + // destroying the lock. + + m_public_run_lock.SetStopped(); + return error; +} + +Error Process::Destroy(bool force_kill) { + + // Tell ourselves we are in the process of destroying the process, so that we + // don't do any unnecessary work + // that might hinder the destruction. Remember to set this back to false when + // we are done. That way if the attempt + // failed and the process stays around for some reason it won't be in a + // confused state. + + if (force_kill) + m_should_detach = false; + + if (GetShouldDetach()) { + // FIXME: This will have to be a process setting: + bool keep_stopped = false; + Detach(keep_stopped); + } + + m_destroy_in_process = true; + + Error error(WillDestroy()); + if (error.Success()) { + EventSP exit_event_sp; + if (DestroyRequiresHalt()) { + error = StopForDestroyOrDetach(exit_event_sp); } - return error; -} -Error -Process::Detach (bool keep_stopped) -{ - EventSP exit_event_sp; - Error error; - m_destroy_in_process = true; - - error = WillDetach(); + if (m_public_state.GetValue() != eStateRunning) { + // Ditch all thread plans, and remove all our breakpoints: in case we have + // to restart the target to + // kill it, we don't want it hitting a breakpoint... + // Only do this if we've stopped, however, since if we didn't manage to + // halt it above, then + // we're not going to have much luck doing this now. + m_thread_list.DiscardThreadPlans(); + DisableAllBreakpointSites(); + } - if (error.Success()) - { - if (DetachRequiresHalt()) - { - error = StopForDestroyOrDetach (exit_event_sp); - if (!error.Success()) - { - m_destroy_in_process = false; - return error; - } - else if (exit_event_sp) - { - // We shouldn't need to do anything else here. There's no process left to detach from... - StopPrivateStateThread(); - m_destroy_in_process = false; - return error; - } - } - - m_thread_list.DiscardThreadPlans(); - DisableAllBreakpointSites(); + error = DoDestroy(); + if (error.Success()) { + DidDestroy(); + StopPrivateStateThread(); + } + m_stdio_communication.Disconnect(); + m_stdio_communication.StopReadThread(); + m_stdin_forward = false; - error = DoDetach(keep_stopped); - if (error.Success()) - { - DidDetach(); - StopPrivateStateThread(); - } - else - { - return error; - } + if (m_process_input_reader) { + m_process_input_reader->SetIsDone(true); + m_process_input_reader->Cancel(); + m_process_input_reader.reset(); } - m_destroy_in_process = false; - + // If we exited when we were waiting for a process to stop, then // forward the event here so we don't lose the event - if (exit_event_sp) - { - // Directly broadcast our exited event because we shut down our - // private state thread above - BroadcastEvent(exit_event_sp); - } - - // If we have been interrupted (to kill us) in the middle of running, we may not end up propagating - // the last events through the event system, in which case we might strand the write lock. Unlock - // it here so when we do to tear down the process we don't get an error destroying the lock. - + if (exit_event_sp) { + // Directly broadcast our exited event because we shut down our + // private state thread above + BroadcastEvent(exit_event_sp); + } + + // If we have been interrupted (to kill us) in the middle of running, we may + // not end up propagating + // the last events through the event system, in which case we might strand + // the write lock. Unlock + // it here so when we do to tear down the process we don't get an error + // destroying the lock. m_public_run_lock.SetStopped(); - return error; -} + } -Error -Process::Destroy (bool force_kill) -{ + m_destroy_in_process = false; - // Tell ourselves we are in the process of destroying the process, so that we don't do any unnecessary work - // that might hinder the destruction. Remember to set this back to false when we are done. That way if the attempt - // failed and the process stays around for some reason it won't be in a confused state. - - if (force_kill) - m_should_detach = false; - - if (GetShouldDetach()) - { - // FIXME: This will have to be a process setting: - bool keep_stopped = false; - Detach(keep_stopped); - } - - m_destroy_in_process = true; + return error; +} - Error error (WillDestroy()); +Error Process::Signal(int signal) { + Error error(WillSignal()); + if (error.Success()) { + error = DoSignal(signal); if (error.Success()) - { - EventSP exit_event_sp; - if (DestroyRequiresHalt()) - { - error = StopForDestroyOrDetach(exit_event_sp); + DidSignal(); + } + return error; +} + +void Process::SetUnixSignals(UnixSignalsSP &&signals_sp) { + assert(signals_sp && "null signals_sp"); + m_unix_signals_sp = signals_sp; +} + +const lldb::UnixSignalsSP &Process::GetUnixSignals() { + assert(m_unix_signals_sp && "null m_unix_signals_sp"); + return m_unix_signals_sp; +} + +lldb::ByteOrder Process::GetByteOrder() const { + return GetTarget().GetArchitecture().GetByteOrder(); +} + +uint32_t Process::GetAddressByteSize() const { + return GetTarget().GetArchitecture().GetAddressByteSize(); +} + +bool Process::ShouldBroadcastEvent(Event *event_ptr) { + const StateType state = + Process::ProcessEventData::GetStateFromEvent(event_ptr); + bool return_value = true; + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_EVENTS | + LIBLLDB_LOG_PROCESS)); + + switch (state) { + case eStateDetached: + case eStateExited: + case eStateUnloaded: + m_stdio_communication.SynchronizeWithReadThread(); + m_stdio_communication.Disconnect(); + m_stdio_communication.StopReadThread(); + m_stdin_forward = false; + + LLVM_FALLTHROUGH; + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + // These events indicate changes in the state of the debugging session, + // always report them. + return_value = true; + break; + case eStateInvalid: + // We stopped for no apparent reason, don't report it. + return_value = false; + break; + case eStateRunning: + case eStateStepping: + // If we've started the target running, we handle the cases where we + // are already running and where there is a transition from stopped to + // running differently. + // running -> running: Automatically suppress extra running events + // stopped -> running: Report except when there is one or more no votes + // and no yes votes. + SynchronouslyNotifyStateChanged(state); + if (m_force_next_event_delivery) + return_value = true; + else { + switch (m_last_broadcast_state) { + case eStateRunning: + case eStateStepping: + // We always suppress multiple runnings with no PUBLIC stop in between. + return_value = false; + break; + default: + // TODO: make this work correctly. For now always report + // run if we aren't running so we don't miss any running + // events. If I run the lldb/test/thread/a.out file and + // break at main.cpp:58, run and hit the breakpoints on + // multiple threads, then somehow during the stepping over + // of all breakpoints no run gets reported. + + // This is a transition from stop to run. + switch (m_thread_list.ShouldReportRun(event_ptr)) { + case eVoteYes: + case eVoteNoOpinion: + return_value = true; + break; + case eVoteNo: + return_value = false; + break; } - - if (m_public_state.GetValue() != eStateRunning) - { - // Ditch all thread plans, and remove all our breakpoints: in case we have to restart the target to - // kill it, we don't want it hitting a breakpoint... - // Only do this if we've stopped, however, since if we didn't manage to halt it above, then - // we're not going to have much luck doing this now. - m_thread_list.DiscardThreadPlans(); - DisableAllBreakpointSites(); - } - - error = DoDestroy(); - if (error.Success()) - { - DidDestroy(); - StopPrivateStateThread(); - } - m_stdio_communication.Disconnect(); - m_stdio_communication.StopReadThread(); - m_stdin_forward = false; - - if (m_process_input_reader) - { - m_process_input_reader->SetIsDone(true); - m_process_input_reader->Cancel(); - m_process_input_reader.reset(); + break; + } + } + break; + case eStateStopped: + case eStateCrashed: + case eStateSuspended: + // We've stopped. First see if we're going to restart the target. + // If we are going to stop, then we always broadcast the event. + // If we aren't going to stop, let the thread plans decide if we're going to + // report this event. + // If no thread has an opinion, we don't report it. + + m_stdio_communication.SynchronizeWithReadThread(); + RefreshStateAfterStop(); + if (ProcessEventData::GetInterruptedFromEvent(event_ptr)) { + if (log) + log->Printf("Process::ShouldBroadcastEvent (%p) stopped due to an " + "interrupt, state: %s", + static_cast<void *>(event_ptr), StateAsCString(state)); + // Even though we know we are going to stop, we should let the threads + // have a look at the stop, + // so they can properly set their state. + m_thread_list.ShouldStop(event_ptr); + return_value = true; + } else { + bool was_restarted = ProcessEventData::GetRestartedFromEvent(event_ptr); + bool should_resume = false; + + // It makes no sense to ask "ShouldStop" if we've already been + // restarted... + // Asking the thread list is also not likely to go well, since we are + // running again. + // So in that case just report the event. + + if (!was_restarted) + should_resume = !m_thread_list.ShouldStop(event_ptr); + + if (was_restarted || should_resume || m_resume_requested) { + Vote stop_vote = m_thread_list.ShouldReportStop(event_ptr); + if (log) + log->Printf("Process::ShouldBroadcastEvent: should_resume: %i state: " + "%s was_restarted: %i stop_vote: %d.", + should_resume, StateAsCString(state), was_restarted, + stop_vote); + + switch (stop_vote) { + case eVoteYes: + return_value = true; + break; + case eVoteNoOpinion: + case eVoteNo: + return_value = false; + break; } - // If we exited when we were waiting for a process to stop, then - // forward the event here so we don't lose the event - if (exit_event_sp) - { - // Directly broadcast our exited event because we shut down our - // private state thread above - BroadcastEvent(exit_event_sp); + if (!was_restarted) { + if (log) + log->Printf("Process::ShouldBroadcastEvent (%p) Restarting process " + "from state: %s", + static_cast<void *>(event_ptr), StateAsCString(state)); + ProcessEventData::SetRestartedInEvent(event_ptr, true); + PrivateResume(); } + } else { + return_value = true; + SynchronouslyNotifyStateChanged(state); + } + } + break; + } + + // Forcing the next event delivery is a one shot deal. So reset it here. + m_force_next_event_delivery = false; + + // We do some coalescing of events (for instance two consecutive running + // events get coalesced.) + // But we only coalesce against events we actually broadcast. So we use + // m_last_broadcast_state + // to track that. NB - you can't use "m_public_state.GetValue()" for that + // purpose, as was originally done, + // because the PublicState reflects the last event pulled off the queue, and + // there may be several + // events stacked up on the queue unserviced. So the PublicState may not + // reflect the last broadcasted event + // yet. m_last_broadcast_state gets updated here. + + if (return_value) + m_last_broadcast_state = state; + + if (log) + log->Printf("Process::ShouldBroadcastEvent (%p) => new state: %s, last " + "broadcast state: %s - %s", + static_cast<void *>(event_ptr), StateAsCString(state), + StateAsCString(m_last_broadcast_state), + return_value ? "YES" : "NO"); + return return_value; +} + +bool Process::StartPrivateStateThread(bool is_secondary_thread) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); + + bool already_running = PrivateStateThreadIsValid(); + if (log) + log->Printf("Process::%s()%s ", __FUNCTION__, + already_running ? " already running" + : " starting private state thread"); + + if (!is_secondary_thread && already_running) + return true; - // If we have been interrupted (to kill us) in the middle of running, we may not end up propagating - // the last events through the event system, in which case we might strand the write lock. Unlock - // it here so when we do to tear down the process we don't get an error destroying the lock. - m_public_run_lock.SetStopped(); - } - - m_destroy_in_process = false; - - return error; -} - -Error -Process::Signal (int signal) -{ - Error error (WillSignal()); - if (error.Success()) - { - error = DoSignal(signal); - if (error.Success()) - DidSignal(); - } - return error; -} - -void -Process::SetUnixSignals(UnixSignalsSP &&signals_sp) -{ - assert (signals_sp && "null signals_sp"); - m_unix_signals_sp = signals_sp; -} + // Create a thread that watches our internal state and controls which + // events make it to clients (into the DCProcess event queue). + char thread_name[1024]; -const lldb::UnixSignalsSP & -Process::GetUnixSignals () -{ - assert (m_unix_signals_sp && "null m_unix_signals_sp"); - return m_unix_signals_sp; + if (HostInfo::GetMaxThreadNameLength() <= 30) { + // On platforms with abbreviated thread name lengths, choose thread names + // that fit within the limit. + if (already_running) + snprintf(thread_name, sizeof(thread_name), "intern-state-OV"); + else + snprintf(thread_name, sizeof(thread_name), "intern-state"); + } else { + if (already_running) + snprintf(thread_name, sizeof(thread_name), + "<lldb.process.internal-state-override(pid=%" PRIu64 ")>", + GetID()); + else + snprintf(thread_name, sizeof(thread_name), + "<lldb.process.internal-state(pid=%" PRIu64 ")>", GetID()); + } + + // Create the private state thread, and start it running. + PrivateStateThreadArgs *args_ptr = + new PrivateStateThreadArgs(this, is_secondary_thread); + m_private_state_thread = + ThreadLauncher::LaunchThread(thread_name, Process::PrivateStateThread, + (void *)args_ptr, nullptr, 8 * 1024 * 1024); + if (m_private_state_thread.IsJoinable()) { + ResumePrivateStateThread(); + return true; + } else + return false; } -lldb::ByteOrder -Process::GetByteOrder () const -{ - return GetTarget().GetArchitecture().GetByteOrder(); +void Process::PausePrivateStateThread() { + ControlPrivateStateThread(eBroadcastInternalStateControlPause); } -uint32_t -Process::GetAddressByteSize () const -{ - return GetTarget().GetArchitecture().GetAddressByteSize(); +void Process::ResumePrivateStateThread() { + ControlPrivateStateThread(eBroadcastInternalStateControlResume); } -bool -Process::ShouldBroadcastEvent (Event *event_ptr) -{ - const StateType state = Process::ProcessEventData::GetStateFromEvent (event_ptr); - bool return_value = true; - Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_EVENTS | LIBLLDB_LOG_PROCESS)); - - switch (state) - { - case eStateDetached: - case eStateExited: - case eStateUnloaded: - m_stdio_communication.SynchronizeWithReadThread(); - m_stdio_communication.Disconnect(); - m_stdio_communication.StopReadThread(); - m_stdin_forward = false; - - LLVM_FALLTHROUGH; - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - // These events indicate changes in the state of the debugging session, always report them. - return_value = true; - break; - case eStateInvalid: - // We stopped for no apparent reason, don't report it. - return_value = false; - break; - case eStateRunning: - case eStateStepping: - // If we've started the target running, we handle the cases where we - // are already running and where there is a transition from stopped to - // running differently. - // running -> running: Automatically suppress extra running events - // stopped -> running: Report except when there is one or more no votes - // and no yes votes. - SynchronouslyNotifyStateChanged (state); - if (m_force_next_event_delivery) - return_value = true; - else - { - switch (m_last_broadcast_state) - { - case eStateRunning: - case eStateStepping: - // We always suppress multiple runnings with no PUBLIC stop in between. - return_value = false; - break; - default: - // TODO: make this work correctly. For now always report - // run if we aren't running so we don't miss any running - // events. If I run the lldb/test/thread/a.out file and - // break at main.cpp:58, run and hit the breakpoints on - // multiple threads, then somehow during the stepping over - // of all breakpoints no run gets reported. - - // This is a transition from stop to run. - switch (m_thread_list.ShouldReportRun (event_ptr)) - { - case eVoteYes: - case eVoteNoOpinion: - return_value = true; - break; - case eVoteNo: - return_value = false; - break; - } - break; - } - } - break; - case eStateStopped: - case eStateCrashed: - case eStateSuspended: - // We've stopped. First see if we're going to restart the target. - // If we are going to stop, then we always broadcast the event. - // If we aren't going to stop, let the thread plans decide if we're going to report this event. - // If no thread has an opinion, we don't report it. - - m_stdio_communication.SynchronizeWithReadThread(); - RefreshStateAfterStop (); - if (ProcessEventData::GetInterruptedFromEvent (event_ptr)) - { - if (log) - log->Printf ("Process::ShouldBroadcastEvent (%p) stopped due to an interrupt, state: %s", - static_cast<void*>(event_ptr), - StateAsCString(state)); - // Even though we know we are going to stop, we should let the threads have a look at the stop, - // so they can properly set their state. - m_thread_list.ShouldStop (event_ptr); - return_value = true; - } - else - { - bool was_restarted = ProcessEventData::GetRestartedFromEvent (event_ptr); - bool should_resume = false; - - // It makes no sense to ask "ShouldStop" if we've already been restarted... - // Asking the thread list is also not likely to go well, since we are running again. - // So in that case just report the event. - - if (!was_restarted) - should_resume = !m_thread_list.ShouldStop(event_ptr); - - if (was_restarted || should_resume || m_resume_requested) - { - Vote stop_vote = m_thread_list.ShouldReportStop (event_ptr); - if (log) - log->Printf ("Process::ShouldBroadcastEvent: should_resume: %i state: %s was_restarted: %i stop_vote: %d.", - should_resume, StateAsCString(state), - was_restarted, stop_vote); - - switch (stop_vote) - { - case eVoteYes: - return_value = true; - break; - case eVoteNoOpinion: - case eVoteNo: - return_value = false; - break; - } - - if (!was_restarted) - { - if (log) - log->Printf ("Process::ShouldBroadcastEvent (%p) Restarting process from state: %s", - static_cast<void*>(event_ptr), - StateAsCString(state)); - ProcessEventData::SetRestartedInEvent(event_ptr, true); - PrivateResume (); - } - } - else - { - return_value = true; - SynchronouslyNotifyStateChanged (state); - } - } - break; - } - - // Forcing the next event delivery is a one shot deal. So reset it here. - m_force_next_event_delivery = false; - - // We do some coalescing of events (for instance two consecutive running events get coalesced.) - // But we only coalesce against events we actually broadcast. So we use m_last_broadcast_state - // to track that. NB - you can't use "m_public_state.GetValue()" for that purpose, as was originally done, - // because the PublicState reflects the last event pulled off the queue, and there may be several - // events stacked up on the queue unserviced. So the PublicState may not reflect the last broadcasted event - // yet. m_last_broadcast_state gets updated here. - - if (return_value) - m_last_broadcast_state = state; - +void Process::StopPrivateStateThread() { + if (m_private_state_thread.IsJoinable()) + ControlPrivateStateThread(eBroadcastInternalStateControlStop); + else { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); if (log) - log->Printf ("Process::ShouldBroadcastEvent (%p) => new state: %s, last broadcast state: %s - %s", - static_cast<void*>(event_ptr), StateAsCString(state), - StateAsCString(m_last_broadcast_state), - return_value ? "YES" : "NO"); - return return_value; + log->Printf( + "Went to stop the private state thread, but it was already invalid."); + } } -bool -Process::StartPrivateStateThread (bool is_secondary_thread) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS)); - - bool already_running = PrivateStateThreadIsValid (); - if (log) - log->Printf ("Process::%s()%s ", __FUNCTION__, already_running ? " already running" : " starting private state thread"); +void Process::ControlPrivateStateThread(uint32_t signal) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - if (!is_secondary_thread && already_running) - return true; + assert(signal == eBroadcastInternalStateControlStop || + signal == eBroadcastInternalStateControlPause || + signal == eBroadcastInternalStateControlResume); - // Create a thread that watches our internal state and controls which - // events make it to clients (into the DCProcess event queue). - char thread_name[1024]; + if (log) + log->Printf("Process::%s (signal = %d)", __FUNCTION__, signal); - if (HostInfo::GetMaxThreadNameLength() <= 30) - { - // On platforms with abbreviated thread name lengths, choose thread names that fit within the limit. - if (already_running) - snprintf(thread_name, sizeof(thread_name), "intern-state-OV"); - else - snprintf(thread_name, sizeof(thread_name), "intern-state"); - } - else - { - if (already_running) - snprintf(thread_name, sizeof(thread_name), "<lldb.process.internal-state-override(pid=%" PRIu64 ")>", GetID()); - else - snprintf(thread_name, sizeof(thread_name), "<lldb.process.internal-state(pid=%" PRIu64 ")>", GetID()); + // Signal the private state thread + if (m_private_state_thread.IsJoinable()) { + // Broadcast the event. + // It is important to do this outside of the if below, because + // it's possible that the thread state is invalid but that the + // thread is waiting on a control event instead of simply being + // on its way out (this should not happen, but it apparently can). + if (log) + log->Printf("Sending control event of type: %d.", signal); + std::shared_ptr<EventDataReceipt> event_receipt_sp(new EventDataReceipt()); + m_private_state_control_broadcaster.BroadcastEvent(signal, + event_receipt_sp); + + // Wait for the event receipt or for the private state thread to exit + bool receipt_received = false; + if (PrivateStateThreadIsValid()) { + while (!receipt_received) { + bool timed_out = false; + // Check for a receipt for 2 seconds and then check if the private state + // thread is still around. + receipt_received = event_receipt_sp->WaitForEventReceived( + std::chrono::seconds(2), &timed_out); + if (!receipt_received) { + // Check if the private state thread is still around. If it isn't then + // we are done waiting + if (!PrivateStateThreadIsValid()) + break; // Private state thread exited or is exiting, we are done + } + } } - // Create the private state thread, and start it running. - PrivateStateThreadArgs *args_ptr = new PrivateStateThreadArgs(this, is_secondary_thread); - m_private_state_thread = ThreadLauncher::LaunchThread(thread_name, Process::PrivateStateThread, (void *) args_ptr, nullptr, 8 * 1024 * 1024); - if (m_private_state_thread.IsJoinable()) - { - ResumePrivateStateThread(); - return true; + if (signal == eBroadcastInternalStateControlStop) { + thread_result_t result = NULL; + m_private_state_thread.Join(&result); + m_private_state_thread.Reset(); } - else - return false; + } else { + if (log) + log->Printf( + "Private state thread already dead, no need to signal it to stop."); + } } -void -Process::PausePrivateStateThread () -{ - ControlPrivateStateThread (eBroadcastInternalStateControlPause); +void Process::SendAsyncInterrupt() { + if (PrivateStateThreadIsValid()) + m_private_state_broadcaster.BroadcastEvent(Process::eBroadcastBitInterrupt, + nullptr); + else + BroadcastEvent(Process::eBroadcastBitInterrupt, nullptr); } -void -Process::ResumePrivateStateThread () -{ - ControlPrivateStateThread (eBroadcastInternalStateControlResume); -} +void Process::HandlePrivateEvent(EventSP &event_sp) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + m_resume_requested = false; -void -Process::StopPrivateStateThread () -{ - if (m_private_state_thread.IsJoinable ()) - ControlPrivateStateThread (eBroadcastInternalStateControlStop); - else - { - Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Went to stop the private state thread, but it was already invalid."); - } -} - -void -Process::ControlPrivateStateThread (uint32_t signal) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); - - assert (signal == eBroadcastInternalStateControlStop || - signal == eBroadcastInternalStateControlPause || - signal == eBroadcastInternalStateControlResume); + const StateType new_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + // First check to see if anybody wants a shot at this event: + if (m_next_event_action_ap) { + NextEventAction::EventActionResult action_result = + m_next_event_action_ap->PerformAction(event_sp); if (log) - log->Printf ("Process::%s (signal = %d)", __FUNCTION__, signal); - - // Signal the private state thread - if (m_private_state_thread.IsJoinable()) - { - // Broadcast the event. - // It is important to do this outside of the if below, because - // it's possible that the thread state is invalid but that the - // thread is waiting on a control event instead of simply being - // on its way out (this should not happen, but it apparently can). - if (log) - log->Printf ("Sending control event of type: %d.", signal); - std::shared_ptr<EventDataReceipt> event_receipt_sp(new EventDataReceipt()); - m_private_state_control_broadcaster.BroadcastEvent(signal, event_receipt_sp); - - // Wait for the event receipt or for the private state thread to exit - bool receipt_received = false; - if (PrivateStateThreadIsValid()) - { - while (!receipt_received) - { - bool timed_out = false; - TimeValue timeout_time; - timeout_time = TimeValue::Now(); - timeout_time.OffsetWithSeconds(2); - // Check for a receipt for 2 seconds and then check if the private state - // thread is still around. - receipt_received = event_receipt_sp->WaitForEventReceived (&timeout_time, &timed_out); - if (!receipt_received) - { - // Check if the private state thread is still around. If it isn't then we are done waiting - if (!PrivateStateThreadIsValid()) - break; // Private state thread exited or is exiting, we are done - } - } - } - - if (signal == eBroadcastInternalStateControlStop) - { - thread_result_t result = NULL; - m_private_state_thread.Join(&result); - m_private_state_thread.Reset(); - } - } - else - { + log->Printf("Ran next event action, result was %d.", action_result); + + switch (action_result) { + case NextEventAction::eEventActionSuccess: + SetNextEventAction(nullptr); + break; + + case NextEventAction::eEventActionRetry: + break; + + case NextEventAction::eEventActionExit: + // Handle Exiting Here. If we already got an exited event, + // we should just propagate it. Otherwise, swallow this event, + // and set our state to exit so the next event will kill us. + if (new_state != eStateExited) { + // FIXME: should cons up an exited event, and discard this one. + SetExitStatus(0, m_next_event_action_ap->GetExitString()); + SetNextEventAction(nullptr); + return; + } + SetNextEventAction(nullptr); + break; + } + } + + // See if we should broadcast this state to external clients? + const bool should_broadcast = ShouldBroadcastEvent(event_sp.get()); + + if (should_broadcast) { + const bool is_hijacked = IsHijackedForEvent(eBroadcastBitStateChanged); + if (log) { + log->Printf("Process::%s (pid = %" PRIu64 + ") broadcasting new state %s (old state %s) to %s", + __FUNCTION__, GetID(), StateAsCString(new_state), + StateAsCString(GetState()), + is_hijacked ? "hijacked" : "public"); + } + Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get()); + if (StateIsRunningState(new_state)) { + // Only push the input handler if we aren't fowarding events, + // as this means the curses GUI is in use... + // Or don't push it if we are launching since it will come up stopped. + if (!GetTarget().GetDebugger().IsForwardingEvents() && + new_state != eStateLaunching && new_state != eStateAttaching) { + PushProcessIOHandler(); + m_iohandler_sync.SetValue(m_iohandler_sync.GetValue() + 1, + eBroadcastAlways); if (log) - log->Printf("Private state thread already dead, no need to signal it to stop."); - } -} - -void -Process::SendAsyncInterrupt () -{ - if (PrivateStateThreadIsValid()) - m_private_state_broadcaster.BroadcastEvent(Process::eBroadcastBitInterrupt, nullptr); - else - BroadcastEvent(Process::eBroadcastBitInterrupt, nullptr); -} + log->Printf("Process::%s updated m_iohandler_sync to %d", + __FUNCTION__, m_iohandler_sync.GetValue()); + } + } else if (StateIsStoppedState(new_state, false)) { + if (!Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) { + // If the lldb_private::Debugger is handling the events, we don't + // want to pop the process IOHandler here, we want to do it when + // we receive the stopped event so we can carefully control when + // the process IOHandler is popped because when we stop we want to + // display some text stating how and why we stopped, then maybe some + // process/thread/frame info, and then we want the "(lldb) " prompt + // to show up. If we pop the process IOHandler here, then we will + // cause the command interpreter to become the top IOHandler after + // the process pops off and it will update its prompt right away... + // See the Debugger.cpp file where it calls the function as + // "process_sp->PopProcessIOHandler()" to see where I am talking about. + // Otherwise we end up getting overlapping "(lldb) " prompts and + // garbled output. + // + // If we aren't handling the events in the debugger (which is indicated + // by "m_target.GetDebugger().IsHandlingEvents()" returning false) or we + // are hijacked, then we always pop the process IO handler manually. + // Hijacking happens when the internal process state thread is running + // thread plans, or when commands want to run in synchronous mode + // and they call "process->WaitForProcessToStop()". An example of + // something + // that will hijack the events is a simple expression: + // + // (lldb) expr (int)puts("hello") + // + // This will cause the internal process state thread to resume and halt + // the process (and _it_ will hijack the eBroadcastBitStateChanged + // events) and we do need the IO handler to be pushed and popped + // correctly. -void -Process::HandlePrivateEvent (EventSP &event_sp) -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - m_resume_requested = false; - - const StateType new_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - - // First check to see if anybody wants a shot at this event: - if (m_next_event_action_ap) - { - NextEventAction::EventActionResult action_result = m_next_event_action_ap->PerformAction(event_sp); - if (log) - log->Printf ("Ran next event action, result was %d.", action_result); - - switch (action_result) - { - case NextEventAction::eEventActionSuccess: - SetNextEventAction(nullptr); - break; - - case NextEventAction::eEventActionRetry: - break; - - case NextEventAction::eEventActionExit: - // Handle Exiting Here. If we already got an exited event, - // we should just propagate it. Otherwise, swallow this event, - // and set our state to exit so the next event will kill us. - if (new_state != eStateExited) - { - // FIXME: should cons up an exited event, and discard this one. - SetExitStatus(0, m_next_event_action_ap->GetExitString()); - SetNextEventAction(nullptr); - return; - } - SetNextEventAction(nullptr); - break; - } + if (is_hijacked || !GetTarget().GetDebugger().IsHandlingEvents()) + PopProcessIOHandler(); + } } - - // See if we should broadcast this state to external clients? - const bool should_broadcast = ShouldBroadcastEvent (event_sp.get()); - - if (should_broadcast) - { - const bool is_hijacked = IsHijackedForEvent(eBroadcastBitStateChanged); - if (log) - { - log->Printf ("Process::%s (pid = %" PRIu64 ") broadcasting new state %s (old state %s) to %s", - __FUNCTION__, - GetID(), - StateAsCString(new_state), - StateAsCString (GetState ()), - is_hijacked ? "hijacked" : "public"); - } - Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get()); - if (StateIsRunningState (new_state)) - { - // Only push the input handler if we aren't fowarding events, - // as this means the curses GUI is in use... - // Or don't push it if we are launching since it will come up stopped. - if (!GetTarget().GetDebugger().IsForwardingEvents() && new_state != eStateLaunching && - new_state != eStateAttaching) - { - PushProcessIOHandler (); - m_iohandler_sync.SetValue(m_iohandler_sync.GetValue()+1, eBroadcastAlways); - if (log) - log->Printf("Process::%s updated m_iohandler_sync to %d", __FUNCTION__, m_iohandler_sync.GetValue()); - } - } - else if (StateIsStoppedState(new_state, false)) - { - if (!Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) - { - // If the lldb_private::Debugger is handling the events, we don't - // want to pop the process IOHandler here, we want to do it when - // we receive the stopped event so we can carefully control when - // the process IOHandler is popped because when we stop we want to - // display some text stating how and why we stopped, then maybe some - // process/thread/frame info, and then we want the "(lldb) " prompt - // to show up. If we pop the process IOHandler here, then we will - // cause the command interpreter to become the top IOHandler after - // the process pops off and it will update its prompt right away... - // See the Debugger.cpp file where it calls the function as - // "process_sp->PopProcessIOHandler()" to see where I am talking about. - // Otherwise we end up getting overlapping "(lldb) " prompts and - // garbled output. - // - // If we aren't handling the events in the debugger (which is indicated - // by "m_target.GetDebugger().IsHandlingEvents()" returning false) or we - // are hijacked, then we always pop the process IO handler manually. - // Hijacking happens when the internal process state thread is running - // thread plans, or when commands want to run in synchronous mode - // and they call "process->WaitForProcessToStop()". An example of something - // that will hijack the events is a simple expression: - // - // (lldb) expr (int)puts("hello") - // - // This will cause the internal process state thread to resume and halt - // the process (and _it_ will hijack the eBroadcastBitStateChanged - // events) and we do need the IO handler to be pushed and popped - // correctly. - - if (is_hijacked || !GetTarget().GetDebugger().IsHandlingEvents()) - PopProcessIOHandler (); - } - } - BroadcastEvent (event_sp); - } - else - { - if (log) - { - log->Printf ("Process::%s (pid = %" PRIu64 ") suppressing state %s (old state %s): should_broadcast == false", - __FUNCTION__, - GetID(), - StateAsCString(new_state), - StateAsCString (GetState ())); - } + BroadcastEvent(event_sp); + } else { + if (log) { + log->Printf( + "Process::%s (pid = %" PRIu64 + ") suppressing state %s (old state %s): should_broadcast == false", + __FUNCTION__, GetID(), StateAsCString(new_state), + StateAsCString(GetState())); } + } } -Error -Process::HaltPrivate() -{ - EventSP event_sp; - Error error (WillHalt()); - if (error.Fail()) - return error; +Error Process::HaltPrivate() { + EventSP event_sp; + Error error(WillHalt()); + if (error.Fail()) + return error; - // Ask the process subclass to actually halt our process - bool caused_stop; - error = DoHalt(caused_stop); + // Ask the process subclass to actually halt our process + bool caused_stop; + error = DoHalt(caused_stop); - DidHalt(); - return error; + DidHalt(); + return error; } -thread_result_t -Process::PrivateStateThread (void *arg) -{ - PrivateStateThreadArgs real_args = *static_cast<PrivateStateThreadArgs *> (arg); - free (arg); - thread_result_t result = real_args.process->RunPrivateStateThread(real_args.is_secondary_thread); - return result; +thread_result_t Process::PrivateStateThread(void *arg) { + std::unique_ptr<PrivateStateThreadArgs> args_up( + static_cast<PrivateStateThreadArgs *>(arg)); + thread_result_t result = + args_up->process->RunPrivateStateThread(args_up->is_secondary_thread); + return result; } -thread_result_t -Process::RunPrivateStateThread (bool is_secondary_thread) -{ - bool control_only = true; - - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") thread starting...", - __FUNCTION__, static_cast<void*>(this), GetID()); - - bool exit_now = false; - bool interrupt_requested = false; - while (!exit_now) - { - EventSP event_sp; - WaitForEventsPrivate(nullptr, event_sp, control_only); - if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) - { - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") got a control event: %d", - __FUNCTION__, static_cast<void*>(this), GetID(), - event_sp->GetType()); - - switch (event_sp->GetType()) - { - case eBroadcastInternalStateControlStop: - exit_now = true; - break; // doing any internal state management below - - case eBroadcastInternalStateControlPause: - control_only = true; - break; - - case eBroadcastInternalStateControlResume: - control_only = false; - break; - } - - continue; - } - else if (event_sp->GetType() == eBroadcastBitInterrupt) - { - if (m_public_state.GetValue() == eStateAttaching) - { - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") woke up with an interrupt while attaching - forwarding interrupt.", - __FUNCTION__, static_cast<void*>(this), - GetID()); - BroadcastEvent(eBroadcastBitInterrupt, nullptr); - } - else if(StateIsRunningState(m_last_broadcast_state)) - { - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") woke up with an interrupt - Halting.", - __FUNCTION__, static_cast<void*>(this), - GetID()); - Error error = HaltPrivate(); - if (error.Fail() && log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") failed to halt the process: %s", - __FUNCTION__, static_cast<void*>(this), - GetID(), error.AsCString()); - // Halt should generate a stopped event. Make a note of the fact that we were - // doing the interrupt, so we can set the interrupted flag after we receive the - // event. We deliberately set this to true even if HaltPrivate failed, so that we - // can interrupt on the next natural stop. - interrupt_requested = true; - } - else - { - // This can happen when someone (e.g. Process::Halt) sees that we are running and - // sends an interrupt request, but the process actually stops before we receive - // it. In that case, we can just ignore the request. We use - // m_last_broadcast_state, because the Stopped event may not have been popped of - // the event queue yet, which is when the public state gets updated. - if (log) - log->Printf("Process::%s ignoring interrupt as we have already stopped.", __FUNCTION__); - } - continue; - } +thread_result_t Process::RunPrivateStateThread(bool is_secondary_thread) { + bool control_only = true; - const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 ") thread starting...", + __FUNCTION__, static_cast<void *>(this), GetID()); - if (internal_state != eStateInvalid) - { - if (m_clear_thread_plans_on_stop && - StateIsStoppedState(internal_state, true)) - { - m_clear_thread_plans_on_stop = false; - m_thread_list.DiscardThreadPlans(); - } + bool exit_now = false; + bool interrupt_requested = false; + while (!exit_now) { + EventSP event_sp; + GetEventsPrivate(event_sp, llvm::None, control_only); + if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) { + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 + ") got a control event: %d", + __FUNCTION__, static_cast<void *>(this), GetID(), + event_sp->GetType()); + + switch (event_sp->GetType()) { + case eBroadcastInternalStateControlStop: + exit_now = true; + break; // doing any internal state management below + + case eBroadcastInternalStateControlPause: + control_only = true; + break; + + case eBroadcastInternalStateControlResume: + control_only = false; + break; + } + + continue; + } else if (event_sp->GetType() == eBroadcastBitInterrupt) { + if (m_public_state.GetValue() == eStateAttaching) { + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 + ") woke up with an interrupt while attaching - " + "forwarding interrupt.", + __FUNCTION__, static_cast<void *>(this), GetID()); + BroadcastEvent(eBroadcastBitInterrupt, nullptr); + } else if (StateIsRunningState(m_last_broadcast_state)) { + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 + ") woke up with an interrupt - Halting.", + __FUNCTION__, static_cast<void *>(this), GetID()); + Error error = HaltPrivate(); + if (error.Fail() && log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 + ") failed to halt the process: %s", + __FUNCTION__, static_cast<void *>(this), GetID(), + error.AsCString()); + // Halt should generate a stopped event. Make a note of the fact that we + // were + // doing the interrupt, so we can set the interrupted flag after we + // receive the + // event. We deliberately set this to true even if HaltPrivate failed, + // so that we + // can interrupt on the next natural stop. + interrupt_requested = true; + } else { + // This can happen when someone (e.g. Process::Halt) sees that we are + // running and + // sends an interrupt request, but the process actually stops before we + // receive + // it. In that case, we can just ignore the request. We use + // m_last_broadcast_state, because the Stopped event may not have been + // popped of + // the event queue yet, which is when the public state gets updated. + if (log) + log->Printf( + "Process::%s ignoring interrupt as we have already stopped.", + __FUNCTION__); + } + continue; + } - if (interrupt_requested) - { - if (StateIsStoppedState (internal_state, true)) - { - // We requested the interrupt, so mark this as such in the stop event so - // clients can tell an interrupted process from a natural stop - ProcessEventData::SetInterruptedInEvent (event_sp.get(), true); - interrupt_requested = false; - } - else if (log) - { - log->Printf("Process::%s interrupt_requested, but a non-stopped state '%s' received.", - __FUNCTION__, StateAsCString(internal_state)); - } - } + const StateType internal_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - HandlePrivateEvent (event_sp); + if (internal_state != eStateInvalid) { + if (m_clear_thread_plans_on_stop && + StateIsStoppedState(internal_state, true)) { + m_clear_thread_plans_on_stop = false; + m_thread_list.DiscardThreadPlans(); + } + + if (interrupt_requested) { + if (StateIsStoppedState(internal_state, true)) { + // We requested the interrupt, so mark this as such in the stop event + // so + // clients can tell an interrupted process from a natural stop + ProcessEventData::SetInterruptedInEvent(event_sp.get(), true); + interrupt_requested = false; + } else if (log) { + log->Printf("Process::%s interrupt_requested, but a non-stopped " + "state '%s' received.", + __FUNCTION__, StateAsCString(internal_state)); } + } - if (internal_state == eStateInvalid || - internal_state == eStateExited || - internal_state == eStateDetached ) - { - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") about to exit with internal state %s...", - __FUNCTION__, static_cast<void*>(this), GetID(), - StateAsCString(internal_state)); + HandlePrivateEvent(event_sp); + } - break; - } + if (internal_state == eStateInvalid || internal_state == eStateExited || + internal_state == eStateDetached) { + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 + ") about to exit with internal state %s...", + __FUNCTION__, static_cast<void *>(this), GetID(), + StateAsCString(internal_state)); + + break; } + } - // Verify log is still enabled before attempting to write to it... - if (log) - log->Printf ("Process::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", - __FUNCTION__, static_cast<void*>(this), GetID()); + // Verify log is still enabled before attempting to write to it... + if (log) + log->Printf("Process::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", + __FUNCTION__, static_cast<void *>(this), GetID()); - // If we are a secondary thread, then the primary thread we are working for will have already - // acquired the public_run_lock, and isn't done with what it was doing yet, so don't - // try to change it on the way out. - if (!is_secondary_thread) - m_public_run_lock.SetStopped(); - return NULL; + // If we are a secondary thread, then the primary thread we are working for + // will have already + // acquired the public_run_lock, and isn't done with what it was doing yet, so + // don't + // try to change it on the way out. + if (!is_secondary_thread) + m_public_run_lock.SetStopped(); + return NULL; } //------------------------------------------------------------------ // Process Event Data //------------------------------------------------------------------ -Process::ProcessEventData::ProcessEventData () : - EventData (), - m_process_wp (), - m_state (eStateInvalid), - m_restarted (false), - m_update_state (0), - m_interrupted (false) -{ -} +Process::ProcessEventData::ProcessEventData() + : EventData(), m_process_wp(), m_state(eStateInvalid), m_restarted(false), + m_update_state(0), m_interrupted(false) {} -Process::ProcessEventData::ProcessEventData (const ProcessSP &process_sp, StateType state) : - EventData (), - m_process_wp (), - m_state (state), - m_restarted (false), - m_update_state (0), - m_interrupted (false) -{ - if (process_sp) - m_process_wp = process_sp; +Process::ProcessEventData::ProcessEventData(const ProcessSP &process_sp, + StateType state) + : EventData(), m_process_wp(), m_state(state), m_restarted(false), + m_update_state(0), m_interrupted(false) { + if (process_sp) + m_process_wp = process_sp; } Process::ProcessEventData::~ProcessEventData() = default; -const ConstString & -Process::ProcessEventData::GetFlavorString () -{ - static ConstString g_flavor ("Process::ProcessEventData"); - return g_flavor; -} +const ConstString &Process::ProcessEventData::GetFlavorString() { + static ConstString g_flavor("Process::ProcessEventData"); + return g_flavor; +} + +const ConstString &Process::ProcessEventData::GetFlavor() const { + return ProcessEventData::GetFlavorString(); +} + +void Process::ProcessEventData::DoOnRemoval(Event *event_ptr) { + ProcessSP process_sp(m_process_wp.lock()); + + if (!process_sp) + return; + + // This function gets called twice for each event, once when the event gets + // pulled + // off of the private process event queue, and then any number of times, first + // when it gets pulled off of + // the public event queue, then other times when we're pretending that this is + // where we stopped at the + // end of expression evaluation. m_update_state is used to distinguish these + // three cases; it is 0 when we're just pulling it off for private handling, + // and > 1 for expression evaluation, and we don't want to do the breakpoint + // command handling then. + if (m_update_state != 1) + return; + + process_sp->SetPublicState( + m_state, Process::ProcessEventData::GetRestartedFromEvent(event_ptr)); + + if (m_state == eStateStopped && !m_restarted) { + // Let process subclasses know we are about to do a public stop and + // do anything they might need to in order to speed up register and + // memory accesses. + process_sp->WillPublicStop(); + } + + // If this is a halt event, even if the halt stopped with some reason other + // than a plain interrupt (e.g. we had + // already stopped for a breakpoint when the halt request came through) don't + // do the StopInfo actions, as they may + // end up restarting the process. + if (m_interrupted) + return; + + // If we're stopped and haven't restarted, then do the StopInfo actions here: + if (m_state == eStateStopped && !m_restarted) { + ThreadList &curr_thread_list = process_sp->GetThreadList(); + uint32_t num_threads = curr_thread_list.GetSize(); + uint32_t idx; + + // The actions might change one of the thread's stop_info's opinions about + // whether we should + // stop the process, so we need to query that as we go. + + // One other complication here, is that we try to catch any case where the + // target has run (except for expressions) + // and immediately exit, but if we get that wrong (which is possible) then + // the thread list might have changed, and + // that would cause our iteration here to crash. We could make a copy of + // the thread list, but we'd really like + // to also know if it has changed at all, so we make up a vector of the + // thread ID's and check what we get back + // against this list & bag out if anything differs. + std::vector<uint32_t> thread_index_array(num_threads); + for (idx = 0; idx < num_threads; ++idx) + thread_index_array[idx] = + curr_thread_list.GetThreadAtIndex(idx)->GetIndexID(); + + // Use this to track whether we should continue from here. We will only + // continue the target running if + // no thread says we should stop. Of course if some thread's PerformAction + // actually sets the target running, + // then it doesn't matter what the other threads say... + + bool still_should_stop = false; + + // Sometimes - for instance if we have a bug in the stub we are talking to, + // we stop but no thread has a + // valid stop reason. In that case we should just stop, because we have no + // way of telling what the right + // thing to do is, and it's better to let the user decide than continue + // behind their backs. + + bool does_anybody_have_an_opinion = false; + + for (idx = 0; idx < num_threads; ++idx) { + curr_thread_list = process_sp->GetThreadList(); + if (curr_thread_list.GetSize() != num_threads) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf( + "Number of threads changed from %u to %u while processing event.", + num_threads, curr_thread_list.GetSize()); + break; + } -const ConstString & -Process::ProcessEventData::GetFlavor () const -{ - return ProcessEventData::GetFlavorString (); -} + lldb::ThreadSP thread_sp = curr_thread_list.GetThreadAtIndex(idx); -void -Process::ProcessEventData::DoOnRemoval (Event *event_ptr) -{ - ProcessSP process_sp(m_process_wp.lock()); - - if (!process_sp) - return; - - // This function gets called twice for each event, once when the event gets pulled - // off of the private process event queue, and then any number of times, first when it gets pulled off of - // the public event queue, then other times when we're pretending that this is where we stopped at the - // end of expression evaluation. m_update_state is used to distinguish these - // three cases; it is 0 when we're just pulling it off for private handling, - // and > 1 for expression evaluation, and we don't want to do the breakpoint command handling then. - if (m_update_state != 1) - return; - - process_sp->SetPublicState (m_state, Process::ProcessEventData::GetRestartedFromEvent(event_ptr)); - - // If this is a halt event, even if the halt stopped with some reason other than a plain interrupt (e.g. we had - // already stopped for a breakpoint when the halt request came through) don't do the StopInfo actions, as they may - // end up restarting the process. - if (m_interrupted) - return; - - // If we're stopped and haven't restarted, then do the StopInfo actions here: - if (m_state == eStateStopped && ! m_restarted) - { - // Let process subclasses know we are about to do a public stop and - // do anything they might need to in order to speed up register and - // memory accesses. - process_sp->WillPublicStop(); - - ThreadList &curr_thread_list = process_sp->GetThreadList(); - uint32_t num_threads = curr_thread_list.GetSize(); - uint32_t idx; - - // The actions might change one of the thread's stop_info's opinions about whether we should - // stop the process, so we need to query that as we go. - - // One other complication here, is that we try to catch any case where the target has run (except for expressions) - // and immediately exit, but if we get that wrong (which is possible) then the thread list might have changed, and - // that would cause our iteration here to crash. We could make a copy of the thread list, but we'd really like - // to also know if it has changed at all, so we make up a vector of the thread ID's and check what we get back - // against this list & bag out if anything differs. - std::vector<uint32_t> thread_index_array(num_threads); - for (idx = 0; idx < num_threads; ++idx) - thread_index_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetIndexID(); - - // Use this to track whether we should continue from here. We will only continue the target running if - // no thread says we should stop. Of course if some thread's PerformAction actually sets the target running, - // then it doesn't matter what the other threads say... - - bool still_should_stop = false; - - // Sometimes - for instance if we have a bug in the stub we are talking to, we stop but no thread has a - // valid stop reason. In that case we should just stop, because we have no way of telling what the right - // thing to do is, and it's better to let the user decide than continue behind their backs. - - bool does_anybody_have_an_opinion = false; - - for (idx = 0; idx < num_threads; ++idx) - { - curr_thread_list = process_sp->GetThreadList(); - if (curr_thread_list.GetSize() != num_threads) - { - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Number of threads changed from %u to %u while processing event.", num_threads, curr_thread_list.GetSize()); - break; - } - - lldb::ThreadSP thread_sp = curr_thread_list.GetThreadAtIndex(idx); - - if (thread_sp->GetIndexID() != thread_index_array[idx]) - { - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("The thread at position %u changed from %u to %u while processing event.", - idx, - thread_index_array[idx], - thread_sp->GetIndexID()); - break; - } - - StopInfoSP stop_info_sp = thread_sp->GetStopInfo (); - if (stop_info_sp && stop_info_sp->IsValid()) - { - does_anybody_have_an_opinion = true; - bool this_thread_wants_to_stop; - if (stop_info_sp->GetOverrideShouldStop()) - { - this_thread_wants_to_stop = stop_info_sp->GetOverriddenShouldStopValue(); - } - else - { - stop_info_sp->PerformAction(event_ptr); - // The stop action might restart the target. If it does, then we want to mark that in the - // event so that whoever is receiving it will know to wait for the running event and reflect - // that state appropriately. - // We also need to stop processing actions, since they aren't expecting the target to be running. - - // FIXME: we might have run. - if (stop_info_sp->HasTargetRunSinceMe()) - { - SetRestarted (true); - break; - } - - this_thread_wants_to_stop = stop_info_sp->ShouldStop(event_ptr); - } - - if (!still_should_stop) - still_should_stop = this_thread_wants_to_stop; - } - } - - if (!GetRestarted()) - { - if (!still_should_stop && does_anybody_have_an_opinion) - { - // We've been asked to continue, so do that here. - SetRestarted(true); - // Use the public resume method here, since this is just - // extending a public resume. - process_sp->PrivateResume(); - } - else - { - // If we didn't restart, run the Stop Hooks here: - // They might also restart the target, so watch for that. - process_sp->GetTarget().RunStopHooks(); - if (process_sp->GetPrivateState() == eStateRunning) - SetRestarted(true); - } + if (thread_sp->GetIndexID() != thread_index_array[idx]) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP | + LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("The thread at position %u changed from %u to %u while " + "processing event.", + idx, thread_index_array[idx], thread_sp->GetIndexID()); + break; + } + + StopInfoSP stop_info_sp = thread_sp->GetStopInfo(); + if (stop_info_sp && stop_info_sp->IsValid()) { + does_anybody_have_an_opinion = true; + bool this_thread_wants_to_stop; + if (stop_info_sp->GetOverrideShouldStop()) { + this_thread_wants_to_stop = + stop_info_sp->GetOverriddenShouldStopValue(); + } else { + stop_info_sp->PerformAction(event_ptr); + // The stop action might restart the target. If it does, then we want + // to mark that in the + // event so that whoever is receiving it will know to wait for the + // running event and reflect + // that state appropriately. + // We also need to stop processing actions, since they aren't + // expecting the target to be running. + + // FIXME: we might have run. + if (stop_info_sp->HasTargetRunSinceMe()) { + SetRestarted(true); + break; + } + + this_thread_wants_to_stop = stop_info_sp->ShouldStop(event_ptr); } + + if (!still_should_stop) + still_should_stop = this_thread_wants_to_stop; + } + } + + if (!GetRestarted()) { + if (!still_should_stop && does_anybody_have_an_opinion) { + // We've been asked to continue, so do that here. + SetRestarted(true); + // Use the public resume method here, since this is just + // extending a public resume. + process_sp->PrivateResume(); + } else { + // If we didn't restart, run the Stop Hooks here: + // They might also restart the target, so watch for that. + process_sp->GetTarget().RunStopHooks(); + if (process_sp->GetPrivateState() == eStateRunning) + SetRestarted(true); + } } + } } -void -Process::ProcessEventData::Dump (Stream *s) const -{ - ProcessSP process_sp(m_process_wp.lock()); +void Process::ProcessEventData::Dump(Stream *s) const { + ProcessSP process_sp(m_process_wp.lock()); - if (process_sp) - s->Printf(" process = %p (pid = %" PRIu64 "), ", - static_cast<void*>(process_sp.get()), process_sp->GetID()); - else - s->PutCString(" process = NULL, "); + if (process_sp) + s->Printf(" process = %p (pid = %" PRIu64 "), ", + static_cast<void *>(process_sp.get()), process_sp->GetID()); + else + s->PutCString(" process = NULL, "); - s->Printf("state = %s", StateAsCString(GetState())); + s->Printf("state = %s", StateAsCString(GetState())); } const Process::ProcessEventData * -Process::ProcessEventData::GetEventDataFromEvent (const Event *event_ptr) -{ - if (event_ptr) - { - const EventData *event_data = event_ptr->GetData(); - if (event_data && event_data->GetFlavor() == ProcessEventData::GetFlavorString()) - return static_cast <const ProcessEventData *> (event_ptr->GetData()); - } - return nullptr; +Process::ProcessEventData::GetEventDataFromEvent(const Event *event_ptr) { + if (event_ptr) { + const EventData *event_data = event_ptr->GetData(); + if (event_data && + event_data->GetFlavor() == ProcessEventData::GetFlavorString()) + return static_cast<const ProcessEventData *>(event_ptr->GetData()); + } + return nullptr; } ProcessSP -Process::ProcessEventData::GetProcessFromEvent (const Event *event_ptr) -{ - ProcessSP process_sp; - const ProcessEventData *data = GetEventDataFromEvent (event_ptr); - if (data) - process_sp = data->GetProcessSP(); - return process_sp; +Process::ProcessEventData::GetProcessFromEvent(const Event *event_ptr) { + ProcessSP process_sp; + const ProcessEventData *data = GetEventDataFromEvent(event_ptr); + if (data) + process_sp = data->GetProcessSP(); + return process_sp; } -StateType -Process::ProcessEventData::GetStateFromEvent (const Event *event_ptr) -{ - const ProcessEventData *data = GetEventDataFromEvent (event_ptr); - if (data == nullptr) - return eStateInvalid; - else - return data->GetState(); +StateType Process::ProcessEventData::GetStateFromEvent(const Event *event_ptr) { + const ProcessEventData *data = GetEventDataFromEvent(event_ptr); + if (data == nullptr) + return eStateInvalid; + else + return data->GetState(); } -bool -Process::ProcessEventData::GetRestartedFromEvent (const Event *event_ptr) -{ - const ProcessEventData *data = GetEventDataFromEvent (event_ptr); - if (data == nullptr) - return false; - else - return data->GetRestarted(); +bool Process::ProcessEventData::GetRestartedFromEvent(const Event *event_ptr) { + const ProcessEventData *data = GetEventDataFromEvent(event_ptr); + if (data == nullptr) + return false; + else + return data->GetRestarted(); } -void -Process::ProcessEventData::SetRestartedInEvent (Event *event_ptr, bool new_value) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data != nullptr) - data->SetRestarted(new_value); +void Process::ProcessEventData::SetRestartedInEvent(Event *event_ptr, + bool new_value) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data != nullptr) + data->SetRestarted(new_value); } size_t -Process::ProcessEventData::GetNumRestartedReasons(const Event *event_ptr) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data != nullptr) - return data->GetNumRestartedReasons(); - else - return 0; +Process::ProcessEventData::GetNumRestartedReasons(const Event *event_ptr) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data != nullptr) + return data->GetNumRestartedReasons(); + else + return 0; } const char * -Process::ProcessEventData::GetRestartedReasonAtIndex(const Event *event_ptr, size_t idx) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data != nullptr) - return data->GetRestartedReasonAtIndex(idx); - else - return nullptr; +Process::ProcessEventData::GetRestartedReasonAtIndex(const Event *event_ptr, + size_t idx) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data != nullptr) + return data->GetRestartedReasonAtIndex(idx); + else + return nullptr; } -void -Process::ProcessEventData::AddRestartedReason (Event *event_ptr, const char *reason) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data != nullptr) - data->AddRestartedReason(reason); +void Process::ProcessEventData::AddRestartedReason(Event *event_ptr, + const char *reason) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data != nullptr) + data->AddRestartedReason(reason); } -bool -Process::ProcessEventData::GetInterruptedFromEvent (const Event *event_ptr) -{ - const ProcessEventData *data = GetEventDataFromEvent (event_ptr); - if (data == nullptr) - return false; - else - return data->GetInterrupted (); +bool Process::ProcessEventData::GetInterruptedFromEvent( + const Event *event_ptr) { + const ProcessEventData *data = GetEventDataFromEvent(event_ptr); + if (data == nullptr) + return false; + else + return data->GetInterrupted(); } -void -Process::ProcessEventData::SetInterruptedInEvent (Event *event_ptr, bool new_value) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data != nullptr) - data->SetInterrupted(new_value); +void Process::ProcessEventData::SetInterruptedInEvent(Event *event_ptr, + bool new_value) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data != nullptr) + data->SetInterrupted(new_value); } -bool -Process::ProcessEventData::SetUpdateStateOnRemoval (Event *event_ptr) -{ - ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); - if (data) - { - data->SetUpdateStateOnRemoval(); - return true; - } - return false; +bool Process::ProcessEventData::SetUpdateStateOnRemoval(Event *event_ptr) { + ProcessEventData *data = + const_cast<ProcessEventData *>(GetEventDataFromEvent(event_ptr)); + if (data) { + data->SetUpdateStateOnRemoval(); + return true; + } + return false; } -lldb::TargetSP -Process::CalculateTarget () -{ - return m_target_sp.lock(); -} +lldb::TargetSP Process::CalculateTarget() { return m_target_sp.lock(); } -void -Process::CalculateExecutionContext (ExecutionContext &exe_ctx) -{ - exe_ctx.SetTargetPtr (&GetTarget()); - exe_ctx.SetProcessPtr (this); - exe_ctx.SetThreadPtr(nullptr); - exe_ctx.SetFramePtr(nullptr); +void Process::CalculateExecutionContext(ExecutionContext &exe_ctx) { + exe_ctx.SetTargetPtr(&GetTarget()); + exe_ctx.SetProcessPtr(this); + exe_ctx.SetThreadPtr(nullptr); + exe_ctx.SetFramePtr(nullptr); } -//uint32_t -//Process::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) +// uint32_t +// Process::ListProcessesMatchingName (const char *name, StringList &matches, +// std::vector<lldb::pid_t> &pids) //{ // return 0; //} -// -//ArchSpec -//Process::GetArchSpecForExistingProcess (lldb::pid_t pid) +// +// ArchSpec +// Process::GetArchSpecForExistingProcess (lldb::pid_t pid) //{ // return Host::GetArchSpecForExistingProcess (pid); //} // -//ArchSpec -//Process::GetArchSpecForExistingProcess (const char *process_name) +// ArchSpec +// Process::GetArchSpecForExistingProcess (const char *process_name) //{ // return Host::GetArchSpecForExistingProcess (process_name); //} -void -Process::AppendSTDOUT (const char * s, size_t len) -{ - std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); - m_stdout_data.append (s, len); - BroadcastEventIfUnique (eBroadcastBitSTDOUT, new ProcessEventData (shared_from_this(), GetState())); +void Process::AppendSTDOUT(const char *s, size_t len) { + std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); + m_stdout_data.append(s, len); + BroadcastEventIfUnique(eBroadcastBitSTDOUT, + new ProcessEventData(shared_from_this(), GetState())); } -void -Process::AppendSTDERR (const char * s, size_t len) -{ - std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); - m_stderr_data.append (s, len); - BroadcastEventIfUnique (eBroadcastBitSTDERR, new ProcessEventData (shared_from_this(), GetState())); +void Process::AppendSTDERR(const char *s, size_t len) { + std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); + m_stderr_data.append(s, len); + BroadcastEventIfUnique(eBroadcastBitSTDERR, + new ProcessEventData(shared_from_this(), GetState())); } -void -Process::BroadcastAsyncProfileData(const std::string &one_profile_data) -{ - std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex); - m_profile_data.push_back(one_profile_data); - BroadcastEventIfUnique (eBroadcastBitProfileData, new ProcessEventData (shared_from_this(), GetState())); +void Process::BroadcastAsyncProfileData(const std::string &one_profile_data) { + std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex); + m_profile_data.push_back(one_profile_data); + BroadcastEventIfUnique(eBroadcastBitProfileData, + new ProcessEventData(shared_from_this(), GetState())); } -size_t -Process::GetAsyncProfileData (char *buf, size_t buf_size, Error &error) -{ - std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex); - if (m_profile_data.empty()) - return 0; - - std::string &one_profile_data = m_profile_data.front(); - size_t bytes_available = one_profile_data.size(); - if (bytes_available > 0) - { - Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::GetProfileData (buf = %p, size = %" PRIu64 ")", - static_cast<void*>(buf), - static_cast<uint64_t>(buf_size)); - if (bytes_available > buf_size) - { - memcpy(buf, one_profile_data.c_str(), buf_size); - one_profile_data.erase(0, buf_size); - bytes_available = buf_size; - } - else - { - memcpy(buf, one_profile_data.c_str(), bytes_available); - m_profile_data.erase(m_profile_data.begin()); - } +void Process::BroadcastStructuredData(const StructuredData::ObjectSP &object_sp, + const StructuredDataPluginSP &plugin_sp) { + BroadcastEvent( + eBroadcastBitStructuredData, + new EventDataStructuredData(shared_from_this(), object_sp, plugin_sp)); +} + +StructuredDataPluginSP +Process::GetStructuredDataPlugin(const ConstString &type_name) const { + auto find_it = m_structured_data_plugin_map.find(type_name); + if (find_it != m_structured_data_plugin_map.end()) + return find_it->second; + else + return StructuredDataPluginSP(); +} + +size_t Process::GetAsyncProfileData(char *buf, size_t buf_size, Error &error) { + std::lock_guard<std::recursive_mutex> guard(m_profile_data_comm_mutex); + if (m_profile_data.empty()) + return 0; + + std::string &one_profile_data = m_profile_data.front(); + size_t bytes_available = one_profile_data.size(); + if (bytes_available > 0) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::GetProfileData (buf = %p, size = %" PRIu64 ")", + static_cast<void *>(buf), static_cast<uint64_t>(buf_size)); + if (bytes_available > buf_size) { + memcpy(buf, one_profile_data.c_str(), buf_size); + one_profile_data.erase(0, buf_size); + bytes_available = buf_size; + } else { + memcpy(buf, one_profile_data.c_str(), bytes_available); + m_profile_data.erase(m_profile_data.begin()); } - return bytes_available; + } + return bytes_available; } //------------------------------------------------------------------ // Process STDIO //------------------------------------------------------------------ -size_t -Process::GetSTDOUT (char *buf, size_t buf_size, Error &error) -{ - std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); - size_t bytes_available = m_stdout_data.size(); - if (bytes_available > 0) - { - Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::GetSTDOUT (buf = %p, size = %" PRIu64 ")", - static_cast<void*>(buf), - static_cast<uint64_t>(buf_size)); - if (bytes_available > buf_size) - { - memcpy(buf, m_stdout_data.c_str(), buf_size); - m_stdout_data.erase(0, buf_size); - bytes_available = buf_size; - } - else - { - memcpy(buf, m_stdout_data.c_str(), bytes_available); - m_stdout_data.clear(); - } - } - return bytes_available; -} - -size_t -Process::GetSTDERR (char *buf, size_t buf_size, Error &error) -{ - std::lock_guard<std::recursive_mutex> gaurd(m_stdio_communication_mutex); - size_t bytes_available = m_stderr_data.size(); - if (bytes_available > 0) - { - Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::GetSTDERR (buf = %p, size = %" PRIu64 ")", - static_cast<void*>(buf), - static_cast<uint64_t>(buf_size)); - if (bytes_available > buf_size) - { - memcpy(buf, m_stderr_data.c_str(), buf_size); - m_stderr_data.erase(0, buf_size); - bytes_available = buf_size; - } - else - { - memcpy(buf, m_stderr_data.c_str(), bytes_available); - m_stderr_data.clear(); - } +size_t Process::GetSTDOUT(char *buf, size_t buf_size, Error &error) { + std::lock_guard<std::recursive_mutex> guard(m_stdio_communication_mutex); + size_t bytes_available = m_stdout_data.size(); + if (bytes_available > 0) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::GetSTDOUT (buf = %p, size = %" PRIu64 ")", + static_cast<void *>(buf), static_cast<uint64_t>(buf_size)); + if (bytes_available > buf_size) { + memcpy(buf, m_stdout_data.c_str(), buf_size); + m_stdout_data.erase(0, buf_size); + bytes_available = buf_size; + } else { + memcpy(buf, m_stdout_data.c_str(), bytes_available); + m_stdout_data.clear(); + } + } + return bytes_available; +} + +size_t Process::GetSTDERR(char *buf, size_t buf_size, Error &error) { + std::lock_guard<std::recursive_mutex> gaurd(m_stdio_communication_mutex); + size_t bytes_available = m_stderr_data.size(); + if (bytes_available > 0) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::GetSTDERR (buf = %p, size = %" PRIu64 ")", + static_cast<void *>(buf), static_cast<uint64_t>(buf_size)); + if (bytes_available > buf_size) { + memcpy(buf, m_stderr_data.c_str(), buf_size); + m_stderr_data.erase(0, buf_size); + bytes_available = buf_size; + } else { + memcpy(buf, m_stderr_data.c_str(), bytes_available); + m_stderr_data.clear(); } - return bytes_available; + } + return bytes_available; } -void -Process::STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len) -{ - Process *process = (Process *) baton; - process->AppendSTDOUT (static_cast<const char *>(src), src_len); +void Process::STDIOReadThreadBytesReceived(void *baton, const void *src, + size_t src_len) { + Process *process = (Process *)baton; + process->AppendSTDOUT(static_cast<const char *>(src), src_len); } -class IOHandlerProcessSTDIO : - public IOHandler -{ +class IOHandlerProcessSTDIO : public IOHandler { public: - IOHandlerProcessSTDIO (Process *process, - int write_fd) : - IOHandler(process->GetTarget().GetDebugger(), IOHandler::Type::ProcessIO), - m_process (process), - m_read_file (), - m_write_file (write_fd, false), - m_pipe () - { - m_pipe.CreateNew(false); - m_read_file.SetDescriptor(GetInputFD(), false); - } - - ~IOHandlerProcessSTDIO() override = default; - - // Each IOHandler gets to run until it is done. It should read data - // from the "in" and place output into "out" and "err and return - // when done. - void - Run () override - { - if (!m_read_file.IsValid() || !m_write_file.IsValid() || !m_pipe.CanRead() || !m_pipe.CanWrite()) - { - SetIsDone(true); - return; - } - - SetIsDone(false); - const int read_fd = m_read_file.GetDescriptor(); - TerminalState terminal_state; - terminal_state.Save (read_fd, false); - Terminal terminal(read_fd); - terminal.SetCanonical(false); - terminal.SetEcho(false); + IOHandlerProcessSTDIO(Process *process, int write_fd) + : IOHandler(process->GetTarget().GetDebugger(), + IOHandler::Type::ProcessIO), + m_process(process), m_write_file(write_fd, false) { + m_pipe.CreateNew(false); + m_read_file.SetDescriptor(GetInputFD(), false); + } + + ~IOHandlerProcessSTDIO() override = default; + + // Each IOHandler gets to run until it is done. It should read data + // from the "in" and place output into "out" and "err and return + // when done. + void Run() override { + if (!m_read_file.IsValid() || !m_write_file.IsValid() || + !m_pipe.CanRead() || !m_pipe.CanWrite()) { + SetIsDone(true); + return; + } + + SetIsDone(false); + const int read_fd = m_read_file.GetDescriptor(); + TerminalState terminal_state; + terminal_state.Save(read_fd, false); + Terminal terminal(read_fd); + terminal.SetCanonical(false); + terminal.SetEcho(false); // FD_ZERO, FD_SET are not supported on windows #ifndef _WIN32 - const int pipe_read_fd = m_pipe.GetReadFileDescriptor(); - m_is_running = true; - while (!GetIsDone()) - { - fd_set read_fdset; - FD_ZERO (&read_fdset); - FD_SET (read_fd, &read_fdset); - FD_SET (pipe_read_fd, &read_fdset); - const int nfds = std::max<int>(read_fd, pipe_read_fd) + 1; - int num_set_fds = select(nfds, &read_fdset, nullptr, nullptr, nullptr); - - if (num_set_fds < 0) - { - const int select_errno = errno; - - if (select_errno != EINTR) - SetIsDone(true); - } - else if (num_set_fds > 0) - { - char ch = 0; - size_t n; - if (FD_ISSET (read_fd, &read_fdset)) - { - n = 1; - if (m_read_file.Read(&ch, n).Success() && n == 1) - { - if (m_write_file.Write(&ch, n).Fail() || n != 1) - SetIsDone(true); - } - else - SetIsDone(true); - } - if (FD_ISSET (pipe_read_fd, &read_fdset)) - { - size_t bytes_read; - // Consume the interrupt byte - Error error = m_pipe.Read(&ch, 1, bytes_read); - if (error.Success()) - { - switch (ch) - { - case 'q': - SetIsDone(true); - break; - case 'i': - if (StateIsRunningState(m_process->GetState())) - m_process->SendAsyncInterrupt(); - break; - } - } - } - } - } - m_is_running = false; -#endif - terminal_state.Restore(); - } - - void - Cancel () override - { + const int pipe_read_fd = m_pipe.GetReadFileDescriptor(); + m_is_running = true; + while (!GetIsDone()) { + SelectHelper select_helper; + select_helper.FDSetRead(read_fd); + select_helper.FDSetRead(pipe_read_fd); + Error error = select_helper.Select(); + + if (error.Fail()) { SetIsDone(true); - // Only write to our pipe to cancel if we are in IOHandlerProcessSTDIO::Run(). - // We can end up with a python command that is being run from the command - // interpreter: - // - // (lldb) step_process_thousands_of_times - // - // In this case the command interpreter will be in the middle of handling - // the command and if the process pushes and pops the IOHandler thousands - // of times, we can end up writing to m_pipe without ever consuming the - // bytes from the pipe in IOHandlerProcessSTDIO::Run() and end up - // deadlocking when the pipe gets fed up and blocks until data is consumed. - if (m_is_running) - { - char ch = 'q'; // Send 'q' for quit - size_t bytes_written = 0; - m_pipe.Write(&ch, 1, bytes_written); - } - } - - bool - Interrupt () override - { - // Do only things that are safe to do in an interrupt context (like in - // a SIGINT handler), like write 1 byte to a file descriptor. This will - // interrupt the IOHandlerProcessSTDIO::Run() and we can look at the byte - // that was written to the pipe and then call m_process->SendAsyncInterrupt() - // from a much safer location in code. - if (m_active) - { - char ch = 'i'; // Send 'i' for interrupt - size_t bytes_written = 0; - Error result = m_pipe.Write(&ch, 1, bytes_written); - return result.Success(); + } else { + char ch = 0; + size_t n; + if (select_helper.FDIsSetRead(read_fd)) { + n = 1; + if (m_read_file.Read(&ch, n).Success() && n == 1) { + if (m_write_file.Write(&ch, n).Fail() || n != 1) + SetIsDone(true); + } else + SetIsDone(true); } - else - { - // This IOHandler might be pushed on the stack, but not being run currently - // so do the right thing if we aren't actively watching for STDIN by sending - // the interrupt to the process. Otherwise the write to the pipe above would - // do nothing. This can happen when the command interpreter is running and - // gets a "expression ...". It will be on the IOHandler thread and sending - // the input is complete to the delegate which will cause the expression to - // run, which will push the process IO handler, but not run it. - - if (StateIsRunningState(m_process->GetState())) - { + if (select_helper.FDIsSetRead(pipe_read_fd)) { + size_t bytes_read; + // Consume the interrupt byte + Error error = m_pipe.Read(&ch, 1, bytes_read); + if (error.Success()) { + switch (ch) { + case 'q': + SetIsDone(true); + break; + case 'i': + if (StateIsRunningState(m_process->GetState())) m_process->SendAsyncInterrupt(); - return true; + break; } + } } - return false; + } } - - void - GotEOF() override - { + m_is_running = false; +#endif + terminal_state.Restore(); + } + + void Cancel() override { + SetIsDone(true); + // Only write to our pipe to cancel if we are in + // IOHandlerProcessSTDIO::Run(). + // We can end up with a python command that is being run from the command + // interpreter: + // + // (lldb) step_process_thousands_of_times + // + // In this case the command interpreter will be in the middle of handling + // the command and if the process pushes and pops the IOHandler thousands + // of times, we can end up writing to m_pipe without ever consuming the + // bytes from the pipe in IOHandlerProcessSTDIO::Run() and end up + // deadlocking when the pipe gets fed up and blocks until data is consumed. + if (m_is_running) { + char ch = 'q'; // Send 'q' for quit + size_t bytes_written = 0; + m_pipe.Write(&ch, 1, bytes_written); + } + } + + bool Interrupt() override { + // Do only things that are safe to do in an interrupt context (like in + // a SIGINT handler), like write 1 byte to a file descriptor. This will + // interrupt the IOHandlerProcessSTDIO::Run() and we can look at the byte + // that was written to the pipe and then call + // m_process->SendAsyncInterrupt() + // from a much safer location in code. + if (m_active) { + char ch = 'i'; // Send 'i' for interrupt + size_t bytes_written = 0; + Error result = m_pipe.Write(&ch, 1, bytes_written); + return result.Success(); + } else { + // This IOHandler might be pushed on the stack, but not being run + // currently + // so do the right thing if we aren't actively watching for STDIN by + // sending + // the interrupt to the process. Otherwise the write to the pipe above + // would + // do nothing. This can happen when the command interpreter is running and + // gets a "expression ...". It will be on the IOHandler thread and sending + // the input is complete to the delegate which will cause the expression + // to + // run, which will push the process IO handler, but not run it. + + if (StateIsRunningState(m_process->GetState())) { + m_process->SendAsyncInterrupt(); + return true; + } } - + return false; + } + + void GotEOF() override {} + protected: - Process *m_process; - File m_read_file; // Read from this file (usually actual STDIN for LLDB - File m_write_file; // Write to this file (usually the master pty for getting io to debuggee) - Pipe m_pipe; - std::atomic<bool> m_is_running; + Process *m_process; + File m_read_file; // Read from this file (usually actual STDIN for LLDB + File m_write_file; // Write to this file (usually the master pty for getting + // io to debuggee) + Pipe m_pipe; + std::atomic<bool> m_is_running{false}; }; -void -Process::SetSTDIOFileDescriptor (int fd) -{ - // First set up the Read Thread for reading/handling process I/O - - std::unique_ptr<ConnectionFileDescriptor> conn_ap (new ConnectionFileDescriptor (fd, true)); - - if (conn_ap) - { - m_stdio_communication.SetConnection (conn_ap.release()); - if (m_stdio_communication.IsConnected()) - { - m_stdio_communication.SetReadThreadBytesReceivedCallback (STDIOReadThreadBytesReceived, this); - m_stdio_communication.StartReadThread(); - - // Now read thread is set up, set up input reader. - - if (!m_process_input_reader) - m_process_input_reader.reset (new IOHandlerProcessSTDIO (this, fd)); - } - } -} +void Process::SetSTDIOFileDescriptor(int fd) { + // First set up the Read Thread for reading/handling process I/O -bool -Process::ProcessIOHandlerIsActive () -{ - IOHandlerSP io_handler_sp (m_process_input_reader); - if (io_handler_sp) - return GetTarget().GetDebugger().IsTopIOHandler (io_handler_sp); - return false; -} -bool -Process::PushProcessIOHandler () -{ - IOHandlerSP io_handler_sp (m_process_input_reader); - if (io_handler_sp) - { - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::%s pushing IO handler", __FUNCTION__); + std::unique_ptr<ConnectionFileDescriptor> conn_ap( + new ConnectionFileDescriptor(fd, true)); - io_handler_sp->SetIsDone(false); - GetTarget().GetDebugger().PushIOHandler (io_handler_sp); - return true; + if (conn_ap) { + m_stdio_communication.SetConnection(conn_ap.release()); + if (m_stdio_communication.IsConnected()) { + m_stdio_communication.SetReadThreadBytesReceivedCallback( + STDIOReadThreadBytesReceived, this); + m_stdio_communication.StartReadThread(); + + // Now read thread is set up, set up input reader. + + if (!m_process_input_reader) + m_process_input_reader.reset(new IOHandlerProcessSTDIO(this, fd)); } - return false; + } } -bool -Process::PopProcessIOHandler () -{ - IOHandlerSP io_handler_sp (m_process_input_reader); - if (io_handler_sp) - return GetTarget().GetDebugger().PopIOHandler (io_handler_sp); - return false; +bool Process::ProcessIOHandlerIsActive() { + IOHandlerSP io_handler_sp(m_process_input_reader); + if (io_handler_sp) + return GetTarget().GetDebugger().IsTopIOHandler(io_handler_sp); + return false; } +bool Process::PushProcessIOHandler() { + IOHandlerSP io_handler_sp(m_process_input_reader); + if (io_handler_sp) { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::%s pushing IO handler", __FUNCTION__); -// The process needs to know about installed plug-ins -void -Process::SettingsInitialize () -{ - Thread::SettingsInitialize (); + io_handler_sp->SetIsDone(false); + GetTarget().GetDebugger().PushIOHandler(io_handler_sp); + return true; + } + return false; } -void -Process::SettingsTerminate () -{ - Thread::SettingsTerminate (); +bool Process::PopProcessIOHandler() { + IOHandlerSP io_handler_sp(m_process_input_reader); + if (io_handler_sp) + return GetTarget().GetDebugger().PopIOHandler(io_handler_sp); + return false; } -namespace -{ - // RestorePlanState is used to record the "is private", "is master" and "okay to discard" fields of - // the plan we are running, and reset it on Clean or on destruction. - // It will only reset the state once, so you can call Clean and then monkey with the state and it - // won't get reset on you again. - - class RestorePlanState - { - public: - RestorePlanState (lldb::ThreadPlanSP thread_plan_sp) : - m_thread_plan_sp(thread_plan_sp), - m_already_reset(false) - { - if (m_thread_plan_sp) - { - m_private = m_thread_plan_sp->GetPrivate(); - m_is_master = m_thread_plan_sp->IsMasterPlan(); - m_okay_to_discard = m_thread_plan_sp->OkayToDiscard(); - } - } - - ~RestorePlanState() - { - Clean(); - } - - void - Clean () - { - if (!m_already_reset && m_thread_plan_sp) - { - m_already_reset = true; - m_thread_plan_sp->SetPrivate(m_private); - m_thread_plan_sp->SetIsMasterPlan (m_is_master); - m_thread_plan_sp->SetOkayToDiscard(m_okay_to_discard); - } - } - - private: - lldb::ThreadPlanSP m_thread_plan_sp; - bool m_already_reset; - bool m_private; - bool m_is_master; - bool m_okay_to_discard; - }; -} // anonymous namespace - -ExpressionResults -Process::RunThreadPlan(ExecutionContext &exe_ctx, lldb::ThreadPlanSP &thread_plan_sp, - const EvaluateExpressionOptions &options, DiagnosticManager &diagnostic_manager) -{ - ExpressionResults return_value = eExpressionSetupError; - - std::lock_guard<std::mutex> run_thread_plan_locker(m_run_thread_plan_lock); - - if (!thread_plan_sp) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, "RunThreadPlan called with empty thread plan."); - return eExpressionSetupError; - } +// The process needs to know about installed plug-ins +void Process::SettingsInitialize() { Thread::SettingsInitialize(); } - if (!thread_plan_sp->ValidatePlan(nullptr)) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, "RunThreadPlan called with an invalid thread plan."); - return eExpressionSetupError; - } +void Process::SettingsTerminate() { Thread::SettingsTerminate(); } - if (exe_ctx.GetProcessPtr() != this) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, "RunThreadPlan called on wrong process."); - return eExpressionSetupError; - } +namespace { +// RestorePlanState is used to record the "is private", "is master" and "okay to +// discard" fields of +// the plan we are running, and reset it on Clean or on destruction. +// It will only reset the state once, so you can call Clean and then monkey with +// the state and it +// won't get reset on you again. - Thread *thread = exe_ctx.GetThreadPtr(); - if (thread == nullptr) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, "RunThreadPlan called with invalid thread."); - return eExpressionSetupError; - } +class RestorePlanState { +public: + RestorePlanState(lldb::ThreadPlanSP thread_plan_sp) + : m_thread_plan_sp(thread_plan_sp), m_already_reset(false) { + if (m_thread_plan_sp) { + m_private = m_thread_plan_sp->GetPrivate(); + m_is_master = m_thread_plan_sp->IsMasterPlan(); + m_okay_to_discard = m_thread_plan_sp->OkayToDiscard(); + } + } + + ~RestorePlanState() { Clean(); } + + void Clean() { + if (!m_already_reset && m_thread_plan_sp) { + m_already_reset = true; + m_thread_plan_sp->SetPrivate(m_private); + m_thread_plan_sp->SetIsMasterPlan(m_is_master); + m_thread_plan_sp->SetOkayToDiscard(m_okay_to_discard); + } + } + +private: + lldb::ThreadPlanSP m_thread_plan_sp; + bool m_already_reset; + bool m_private; + bool m_is_master; + bool m_okay_to_discard; +}; +} // anonymous namespace - // We need to change some of the thread plan attributes for the thread plan runner. This will restore them - // when we are done: - - RestorePlanState thread_plan_restorer(thread_plan_sp); - - // We rely on the thread plan we are running returning "PlanCompleted" if when it successfully completes. - // For that to be true the plan can't be private - since private plans suppress themselves in the - // GetCompletedPlan call. - - thread_plan_sp->SetPrivate(false); - - // The plans run with RunThreadPlan also need to be terminal master plans or when they are done we will end - // up asking the plan above us whether we should stop, which may give the wrong answer. - - thread_plan_sp->SetIsMasterPlan (true); - thread_plan_sp->SetOkayToDiscard(false); - - if (m_private_state.GetValue() != eStateStopped) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, - "RunThreadPlan called while the private state was not stopped."); - return eExpressionSetupError; - } +static microseconds +GetOneThreadExpressionTimeout(const EvaluateExpressionOptions &options) { + const milliseconds default_one_thread_timeout(250); - // Save the thread & frame from the exe_ctx for restoration after we run - const uint32_t thread_idx_id = thread->GetIndexID(); - StackFrameSP selected_frame_sp = thread->GetSelectedFrame(); - if (!selected_frame_sp) - { - thread->SetSelectedFrame(nullptr); - selected_frame_sp = thread->GetSelectedFrame(); - if (!selected_frame_sp) - { - diagnostic_manager.Printf(eDiagnosticSeverityError, - "RunThreadPlan called without a selected frame on thread %d", thread_idx_id); - return eExpressionSetupError; - } - } + // If the overall wait is forever, then we don't need to worry about it. + if (!options.GetTimeout()) { + return options.GetOneThreadTimeout() ? *options.GetOneThreadTimeout() + : default_one_thread_timeout; + } - StackID ctx_frame_id = selected_frame_sp->GetStackID(); + // If the one thread timeout is set, use it. + if (options.GetOneThreadTimeout()) + return *options.GetOneThreadTimeout(); - // N.B. Running the target may unset the currently selected thread and frame. We don't want to do that either, - // so we should arrange to reset them as well. + // Otherwise use half the total timeout, bounded by the + // default_one_thread_timeout. + return std::min<microseconds>(default_one_thread_timeout, + *options.GetTimeout() / 2); +} - lldb::ThreadSP selected_thread_sp = GetThreadList().GetSelectedThread(); +static Timeout<std::micro> +GetExpressionTimeout(const EvaluateExpressionOptions &options, + bool before_first_timeout) { + // If we are going to run all threads the whole time, or if we are only + // going to run one thread, we can just return the overall timeout. + if (!options.GetStopOthers() || !options.GetTryAllThreads()) + return options.GetTimeout(); - uint32_t selected_tid; - StackID selected_stack_id; - if (selected_thread_sp) - { - selected_tid = selected_thread_sp->GetIndexID(); - selected_stack_id = selected_thread_sp->GetSelectedFrame()->GetStackID(); - } - else - { - selected_tid = LLDB_INVALID_THREAD_ID; - } + if (before_first_timeout) + return GetOneThreadExpressionTimeout(options); - HostThread backup_private_state_thread; - lldb::StateType old_state = eStateInvalid; - lldb::ThreadPlanSP stopper_base_plan_sp; - - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STEP | LIBLLDB_LOG_PROCESS)); - if (m_private_state_thread.EqualsThread(Host::GetCurrentThread())) - { - // Yikes, we are running on the private state thread! So we can't wait for public events on this thread, since - // we are the thread that is generating public events. - // The simplest thing to do is to spin up a temporary thread to handle private state thread events while - // we are fielding public events here. - if (log) - log->Printf ("Running thread plan on private state thread, spinning up another state thread to handle the events."); - - backup_private_state_thread = m_private_state_thread; - - // One other bit of business: we want to run just this thread plan and anything it pushes, and then stop, - // returning control here. - // But in the normal course of things, the plan above us on the stack would be given a shot at the stop - // event before deciding to stop, and we don't want that. So we insert a "stopper" base plan on the stack - // before the plan we want to run. Since base plans always stop and return control to the user, that will - // do just what we want. - stopper_base_plan_sp.reset(new ThreadPlanBase (*thread)); - thread->QueueThreadPlan (stopper_base_plan_sp, false); - // Have to make sure our public state is stopped, since otherwise the reporting logic below doesn't work correctly. - old_state = m_public_state.GetValue(); - m_public_state.SetValueNoLock(eStateStopped); - - // Now spin up the private state thread: - StartPrivateStateThread(true); - } + if (!options.GetTimeout()) + return llvm::None; + else + return *options.GetTimeout() - GetOneThreadExpressionTimeout(options); +} - thread->QueueThreadPlan(thread_plan_sp, false); // This used to pass "true" does that make sense? +ExpressionResults +Process::RunThreadPlan(ExecutionContext &exe_ctx, + lldb::ThreadPlanSP &thread_plan_sp, + const EvaluateExpressionOptions &options, + DiagnosticManager &diagnostic_manager) { + ExpressionResults return_value = eExpressionSetupError; + + std::lock_guard<std::mutex> run_thread_plan_locker(m_run_thread_plan_lock); + + if (!thread_plan_sp) { + diagnostic_manager.PutString( + eDiagnosticSeverityError, + "RunThreadPlan called with empty thread plan."); + return eExpressionSetupError; + } + + if (!thread_plan_sp->ValidatePlan(nullptr)) { + diagnostic_manager.PutString( + eDiagnosticSeverityError, + "RunThreadPlan called with an invalid thread plan."); + return eExpressionSetupError; + } + + if (exe_ctx.GetProcessPtr() != this) { + diagnostic_manager.PutString(eDiagnosticSeverityError, + "RunThreadPlan called on wrong process."); + return eExpressionSetupError; + } + + Thread *thread = exe_ctx.GetThreadPtr(); + if (thread == nullptr) { + diagnostic_manager.PutString(eDiagnosticSeverityError, + "RunThreadPlan called with invalid thread."); + return eExpressionSetupError; + } + + // We need to change some of the thread plan attributes for the thread plan + // runner. This will restore them + // when we are done: + + RestorePlanState thread_plan_restorer(thread_plan_sp); + + // We rely on the thread plan we are running returning "PlanCompleted" if when + // it successfully completes. + // For that to be true the plan can't be private - since private plans + // suppress themselves in the + // GetCompletedPlan call. + + thread_plan_sp->SetPrivate(false); + + // The plans run with RunThreadPlan also need to be terminal master plans or + // when they are done we will end + // up asking the plan above us whether we should stop, which may give the + // wrong answer. + + thread_plan_sp->SetIsMasterPlan(true); + thread_plan_sp->SetOkayToDiscard(false); + + if (m_private_state.GetValue() != eStateStopped) { + diagnostic_manager.PutString( + eDiagnosticSeverityError, + "RunThreadPlan called while the private state was not stopped."); + return eExpressionSetupError; + } + + // Save the thread & frame from the exe_ctx for restoration after we run + const uint32_t thread_idx_id = thread->GetIndexID(); + StackFrameSP selected_frame_sp = thread->GetSelectedFrame(); + if (!selected_frame_sp) { + thread->SetSelectedFrame(nullptr); + selected_frame_sp = thread->GetSelectedFrame(); + if (!selected_frame_sp) { + diagnostic_manager.Printf( + eDiagnosticSeverityError, + "RunThreadPlan called without a selected frame on thread %d", + thread_idx_id); + return eExpressionSetupError; + } + } + + // Make sure the timeout values make sense. The one thread timeout needs to be + // smaller than the overall timeout. + if (options.GetOneThreadTimeout() && options.GetTimeout() && + *options.GetTimeout() < *options.GetOneThreadTimeout()) { + diagnostic_manager.PutString(eDiagnosticSeverityError, + "RunThreadPlan called with one thread " + "timeout greater than total timeout"); + return eExpressionSetupError; + } + + StackID ctx_frame_id = selected_frame_sp->GetStackID(); + + // N.B. Running the target may unset the currently selected thread and frame. + // We don't want to do that either, + // so we should arrange to reset them as well. + + lldb::ThreadSP selected_thread_sp = GetThreadList().GetSelectedThread(); + + uint32_t selected_tid; + StackID selected_stack_id; + if (selected_thread_sp) { + selected_tid = selected_thread_sp->GetIndexID(); + selected_stack_id = selected_thread_sp->GetSelectedFrame()->GetStackID(); + } else { + selected_tid = LLDB_INVALID_THREAD_ID; + } + + HostThread backup_private_state_thread; + lldb::StateType old_state = eStateInvalid; + lldb::ThreadPlanSP stopper_base_plan_sp; + + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_STEP | + LIBLLDB_LOG_PROCESS)); + if (m_private_state_thread.EqualsThread(Host::GetCurrentThread())) { + // Yikes, we are running on the private state thread! So we can't wait for + // public events on this thread, since + // we are the thread that is generating public events. + // The simplest thing to do is to spin up a temporary thread to handle + // private state thread events while + // we are fielding public events here. + if (log) + log->Printf("Running thread plan on private state thread, spinning up " + "another state thread to handle the events."); + + backup_private_state_thread = m_private_state_thread; + + // One other bit of business: we want to run just this thread plan and + // anything it pushes, and then stop, + // returning control here. + // But in the normal course of things, the plan above us on the stack would + // be given a shot at the stop + // event before deciding to stop, and we don't want that. So we insert a + // "stopper" base plan on the stack + // before the plan we want to run. Since base plans always stop and return + // control to the user, that will + // do just what we want. + stopper_base_plan_sp.reset(new ThreadPlanBase(*thread)); + thread->QueueThreadPlan(stopper_base_plan_sp, false); + // Have to make sure our public state is stopped, since otherwise the + // reporting logic below doesn't work correctly. + old_state = m_public_state.GetValue(); + m_public_state.SetValueNoLock(eStateStopped); + + // Now spin up the private state thread: + StartPrivateStateThread(true); + } + + thread->QueueThreadPlan( + thread_plan_sp, false); // This used to pass "true" does that make sense? + + if (options.GetDebug()) { + // In this case, we aren't actually going to run, we just want to stop right + // away. + // Flush this thread so we will refetch the stacks and show the correct + // backtrace. + // FIXME: To make this prettier we should invent some stop reason for this, + // but that + // is only cosmetic, and this functionality is only of use to lldb + // developers who can + // live with not pretty... + thread->Flush(); + return eExpressionStoppedForDebug; + } + + ListenerSP listener_sp( + Listener::MakeListener("lldb.process.listener.run-thread-plan")); + + lldb::EventSP event_to_broadcast_sp; + + { + // This process event hijacker Hijacks the Public events and its destructor + // makes sure that the process events get + // restored on exit to the function. + // + // If the event needs to propagate beyond the hijacker (e.g., the process + // exits during execution), then the event + // is put into event_to_broadcast_sp for rebroadcasting. + + ProcessEventHijacker run_thread_plan_hijacker(*this, listener_sp); + + if (log) { + StreamString s; + thread_plan_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); + log->Printf("Process::RunThreadPlan(): Resuming thread %u - 0x%4.4" PRIx64 + " to run thread plan \"%s\".", + thread->GetIndexID(), thread->GetID(), s.GetData()); + } + + bool got_event; + lldb::EventSP event_sp; + lldb::StateType stop_state = lldb::eStateInvalid; + + bool before_first_timeout = true; // This is set to false the first time + // that we have to halt the target. + bool do_resume = true; + bool handle_running_event = true; + + // This is just for accounting: + uint32_t num_resumes = 0; + + // If we are going to run all threads the whole time, or if we are only + // going to run one thread, then we don't need the first timeout. So we + // pretend we are after the first timeout already. + if (!options.GetStopOthers() || !options.GetTryAllThreads()) + before_first_timeout = false; - if (options.GetDebug()) - { - // In this case, we aren't actually going to run, we just want to stop right away. - // Flush this thread so we will refetch the stacks and show the correct backtrace. - // FIXME: To make this prettier we should invent some stop reason for this, but that - // is only cosmetic, and this functionality is only of use to lldb developers who can - // live with not pretty... - thread->Flush(); - return eExpressionStoppedForDebug; - } + if (log) + log->Printf("Stop others: %u, try all: %u, before_first: %u.\n", + options.GetStopOthers(), options.GetTryAllThreads(), + before_first_timeout); + + // This isn't going to work if there are unfetched events on the queue. + // Are there cases where we might want to run the remaining events here, and + // then try to + // call the function? That's probably being too tricky for our own good. + + Event *other_events = listener_sp->PeekAtNextEvent(); + if (other_events != nullptr) { + diagnostic_manager.PutString( + eDiagnosticSeverityError, + "RunThreadPlan called with pending events on the queue."); + return eExpressionSetupError; + } + + // We also need to make sure that the next event is delivered. We might be + // calling a function as part of + // a thread plan, in which case the last delivered event could be the + // running event, and we don't want + // event coalescing to cause us to lose OUR running event... + ForceNextEventDelivery(); + +// This while loop must exit out the bottom, there's cleanup that we need to do +// when we are done. +// So don't call return anywhere within it. - ListenerSP listener_sp(Listener::MakeListener("lldb.process.listener.run-thread-plan")); +#ifdef LLDB_RUN_THREAD_HALT_WITH_EVENT + // It's pretty much impossible to write test cases for things like: + // One thread timeout expires, I go to halt, but the process already stopped + // on the function call stop breakpoint. Turning on this define will make + // us not + // fetch the first event till after the halt. So if you run a quick + // function, it will have + // completed, and the completion event will be waiting, when you interrupt + // for halt. + // The expression evaluation should still succeed. + bool miss_first_event = true; +#endif + while (true) { + // We usually want to resume the process if we get to the top of the loop. + // The only exception is if we get two running events with no intervening + // stop, which can happen, we will just wait for then next stop event. + if (log) + log->Printf("Top of while loop: do_resume: %i handle_running_event: %i " + "before_first_timeout: %i.", + do_resume, handle_running_event, before_first_timeout); + + if (do_resume || handle_running_event) { + // Do the initial resume and wait for the running event before going + // further. + + if (do_resume) { + num_resumes++; + Error resume_error = PrivateResume(); + if (!resume_error.Success()) { + diagnostic_manager.Printf( + eDiagnosticSeverityError, + "couldn't resume inferior the %d time: \"%s\".", num_resumes, + resume_error.AsCString()); + return_value = eExpressionSetupError; + break; + } + } - lldb::EventSP event_to_broadcast_sp; + got_event = + listener_sp->GetEvent(event_sp, std::chrono::milliseconds(500)); + if (!got_event) { + if (log) + log->Printf("Process::RunThreadPlan(): didn't get any event after " + "resume %" PRIu32 ", exiting.", + num_resumes); + + diagnostic_manager.Printf(eDiagnosticSeverityError, + "didn't get any event after resume %" PRIu32 + ", exiting.", + num_resumes); + return_value = eExpressionSetupError; + break; + } - { - // This process event hijacker Hijacks the Public events and its destructor makes sure that the process events get - // restored on exit to the function. - // - // If the event needs to propagate beyond the hijacker (e.g., the process exits during execution), then the event - // is put into event_to_broadcast_sp for rebroadcasting. + stop_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - ProcessEventHijacker run_thread_plan_hijacker (*this, listener_sp); + if (stop_state != eStateRunning) { + bool restarted = false; - if (log) - { - StreamString s; - thread_plan_sp->GetDescription(&s, lldb::eDescriptionLevelVerbose); - log->Printf ("Process::RunThreadPlan(): Resuming thread %u - 0x%4.4" PRIx64 " to run thread plan \"%s\".", - thread->GetIndexID(), - thread->GetID(), - s.GetData()); + if (stop_state == eStateStopped) { + restarted = Process::ProcessEventData::GetRestartedFromEvent( + event_sp.get()); + if (log) + log->Printf( + "Process::RunThreadPlan(): didn't get running event after " + "resume %d, got %s instead (restarted: %i, do_resume: %i, " + "handle_running_event: %i).", + num_resumes, StateAsCString(stop_state), restarted, do_resume, + handle_running_event); + } + + if (restarted) { + // This is probably an overabundance of caution, I don't think I + // should ever get a stopped & restarted + // event here. But if I do, the best thing is to Halt and then get + // out of here. + const bool clear_thread_plans = false; + const bool use_run_lock = false; + Halt(clear_thread_plans, use_run_lock); + } + + diagnostic_manager.Printf( + eDiagnosticSeverityError, + "didn't get running event after initial resume, got %s instead.", + StateAsCString(stop_state)); + return_value = eExpressionSetupError; + break; } - bool got_event; - lldb::EventSP event_sp; - lldb::StateType stop_state = lldb::eStateInvalid; - - TimeValue* timeout_ptr = nullptr; - TimeValue real_timeout; - - bool before_first_timeout = true; // This is set to false the first time that we have to halt the target. - bool do_resume = true; - bool handle_running_event = true; - const uint64_t default_one_thread_timeout_usec = 250000; - - // This is just for accounting: - uint32_t num_resumes = 0; - - uint32_t timeout_usec = options.GetTimeoutUsec(); - uint32_t one_thread_timeout_usec; - uint32_t all_threads_timeout_usec = 0; - - // If we are going to run all threads the whole time, or if we are only going to run one thread, - // then we don't need the first timeout. So we set the final timeout, and pretend we are after the - // first timeout already. - - if (!options.GetStopOthers() || !options.GetTryAllThreads()) - { - before_first_timeout = false; - one_thread_timeout_usec = 0; - all_threads_timeout_usec = timeout_usec; - } - else - { - uint32_t option_one_thread_timeout = options.GetOneThreadTimeoutUsec(); - - // If the overall wait is forever, then we only need to set the one thread timeout: - if (timeout_usec == 0) - { - if (option_one_thread_timeout != 0) - one_thread_timeout_usec = option_one_thread_timeout; - else - one_thread_timeout_usec = default_one_thread_timeout_usec; - } - else - { - // Otherwise, if the one thread timeout is set, make sure it isn't longer than the overall timeout, - // and use it, otherwise use half the total timeout, bounded by the default_one_thread_timeout_usec. - uint64_t computed_one_thread_timeout; - if (option_one_thread_timeout != 0) - { - if (timeout_usec < option_one_thread_timeout) - { - diagnostic_manager.PutCString( - eDiagnosticSeverityError, - "RunThreadPlan called without one thread timeout greater than total timeout"); - return eExpressionSetupError; - } - computed_one_thread_timeout = option_one_thread_timeout; - } - else - { - computed_one_thread_timeout = timeout_usec / 2; - if (computed_one_thread_timeout > default_one_thread_timeout_usec) - computed_one_thread_timeout = default_one_thread_timeout_usec; - } - one_thread_timeout_usec = computed_one_thread_timeout; - all_threads_timeout_usec = timeout_usec - one_thread_timeout_usec; - } - } - if (log) - log->Printf ("Stop others: %u, try all: %u, before_first: %u, one thread: %" PRIu32 " - all threads: %" PRIu32 ".\n", - options.GetStopOthers(), - options.GetTryAllThreads(), - before_first_timeout, - one_thread_timeout_usec, - all_threads_timeout_usec); - - // This isn't going to work if there are unfetched events on the queue. - // Are there cases where we might want to run the remaining events here, and then try to - // call the function? That's probably being too tricky for our own good. - - Event *other_events = listener_sp->PeekAtNextEvent(); - if (other_events != nullptr) - { - diagnostic_manager.PutCString(eDiagnosticSeverityError, - "RunThreadPlan called with pending events on the queue."); - return eExpressionSetupError; + log->PutCString("Process::RunThreadPlan(): resuming succeeded."); + // We need to call the function synchronously, so spin waiting for it to + // return. + // If we get interrupted while executing, we're going to lose our + // context, and + // won't be able to gather the result at this point. + // We set the timeout AFTER the resume, since the resume takes some time + // and we + // don't want to charge that to the timeout. + } else { + if (log) + log->PutCString("Process::RunThreadPlan(): waiting for next event."); + } + + do_resume = true; + handle_running_event = true; + + // Now wait for the process to stop again: + event_sp.reset(); + + Timeout<std::micro> timeout = + GetExpressionTimeout(options, before_first_timeout); + if (log) { + if (timeout) { + auto now = system_clock::now(); + log->Printf("Process::RunThreadPlan(): about to wait - now is %s - " + "endpoint is %s", + llvm::to_string(now).c_str(), + llvm::to_string(now + *timeout).c_str()); + } else { + log->Printf("Process::RunThreadPlan(): about to wait forever."); } + } - // We also need to make sure that the next event is delivered. We might be calling a function as part of - // a thread plan, in which case the last delivered event could be the running event, and we don't want - // event coalescing to cause us to lose OUR running event... - ForceNextEventDelivery(); - - // This while loop must exit out the bottom, there's cleanup that we need to do when we are done. - // So don't call return anywhere within it. - #ifdef LLDB_RUN_THREAD_HALT_WITH_EVENT - // It's pretty much impossible to write test cases for things like: - // One thread timeout expires, I go to halt, but the process already stopped - // on the function call stop breakpoint. Turning on this define will make us not - // fetch the first event till after the halt. So if you run a quick function, it will have - // completed, and the completion event will be waiting, when you interrupt for halt. - // The expression evaluation should still succeed. - bool miss_first_event = true; + // See comment above... + if (miss_first_event) { + usleep(1000); + miss_first_event = false; + got_event = false; + } else #endif - TimeValue one_thread_timeout; - TimeValue final_timeout; - - while (true) - { - // We usually want to resume the process if we get to the top of the loop. - // The only exception is if we get two running events with no intervening - // stop, which can happen, we will just wait for then next stop event. + got_event = listener_sp->GetEvent(event_sp, timeout); + + if (got_event) { + if (event_sp) { + bool keep_going = false; + if (event_sp->GetType() == eBroadcastBitInterrupt) { + const bool clear_thread_plans = false; + const bool use_run_lock = false; + Halt(clear_thread_plans, use_run_lock); + return_value = eExpressionInterrupted; + diagnostic_manager.PutString(eDiagnosticSeverityRemark, + "execution halted by user interrupt."); if (log) - log->Printf ("Top of while loop: do_resume: %i handle_running_event: %i before_first_timeout: %i.", - do_resume, - handle_running_event, - before_first_timeout); - - if (do_resume || handle_running_event) - { - // Do the initial resume and wait for the running event before going further. - - if (do_resume) - { - num_resumes++; - Error resume_error = PrivateResume(); - if (!resume_error.Success()) - { - diagnostic_manager.Printf(eDiagnosticSeverityError, - "couldn't resume inferior the %d time: \"%s\".", num_resumes, - resume_error.AsCString()); - return_value = eExpressionSetupError; - break; + log->Printf("Process::RunThreadPlan(): Got interrupted by " + "eBroadcastBitInterrupted, exiting."); + break; + } else { + stop_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + if (log) + log->Printf( + "Process::RunThreadPlan(): in while loop, got event: %s.", + StateAsCString(stop_state)); + + switch (stop_state) { + case lldb::eStateStopped: { + // We stopped, figure out what we are going to do now. + ThreadSP thread_sp = + GetThreadList().FindThreadByIndexID(thread_idx_id); + if (!thread_sp) { + // Ooh, our thread has vanished. Unlikely that this was + // successful execution... + if (log) + log->Printf("Process::RunThreadPlan(): execution completed " + "but our thread (index-id=%u) has vanished.", + thread_idx_id); + return_value = eExpressionInterrupted; + } else { + // If we were restarted, we just need to go back up to fetch + // another event. + if (Process::ProcessEventData::GetRestartedFromEvent( + event_sp.get())) { + if (log) { + log->Printf("Process::RunThreadPlan(): Got a stop and " + "restart, so we'll continue waiting."); + } + keep_going = true; + do_resume = false; + handle_running_event = true; + } else { + StopInfoSP stop_info_sp(thread_sp->GetStopInfo()); + StopReason stop_reason = eStopReasonInvalid; + if (stop_info_sp) + stop_reason = stop_info_sp->GetStopReason(); + + // FIXME: We only check if the stop reason is plan complete, + // should we make sure that + // it is OUR plan that is complete? + if (stop_reason == eStopReasonPlanComplete) { + if (log) + log->PutCString("Process::RunThreadPlan(): execution " + "completed successfully."); + + // Restore the plan state so it will get reported as + // intended when we are done. + thread_plan_restorer.Clean(); + + return_value = eExpressionCompleted; + } else { + // Something restarted the target, so just wait for it to + // stop for real. + if (stop_reason == eStopReasonBreakpoint) { + if (log) + log->Printf("Process::RunThreadPlan() stopped for " + "breakpoint: %s.", + stop_info_sp->GetDescription()); + return_value = eExpressionHitBreakpoint; + if (!options.DoesIgnoreBreakpoints()) { + // Restore the plan state and then force Private to + // false. We are + // going to stop because of this plan so we need it to + // become a public + // plan or it won't report correctly when we continue to + // its termination + // later on. + thread_plan_restorer.Clean(); + if (thread_plan_sp) + thread_plan_sp->SetPrivate(false); + event_to_broadcast_sp = event_sp; + } + } else { + if (log) + log->PutCString("Process::RunThreadPlan(): thread plan " + "didn't successfully complete."); + if (!options.DoesUnwindOnError()) + event_to_broadcast_sp = event_sp; + return_value = eExpressionInterrupted; } + } } + } + } break; + + case lldb::eStateRunning: + // This shouldn't really happen, but sometimes we do get two + // running events without an + // intervening stop, and in that case we should just go back to + // waiting for the stop. + do_resume = false; + keep_going = true; + handle_running_event = false; + break; + + default: + if (log) + log->Printf("Process::RunThreadPlan(): execution stopped with " + "unexpected state: %s.", + StateAsCString(stop_state)); + + if (stop_state == eStateExited) + event_to_broadcast_sp = event_sp; + + diagnostic_manager.PutString( + eDiagnosticSeverityError, + "execution stopped with unexpected state."); + return_value = eExpressionInterrupted; + break; + } + } - TimeValue resume_timeout = TimeValue::Now(); - resume_timeout.OffsetWithMicroSeconds(500000); - - got_event = listener_sp->WaitForEvent(&resume_timeout, event_sp); - if (!got_event) - { - if (log) - log->Printf("Process::RunThreadPlan(): didn't get any event after resume %" PRIu32 ", exiting.", - num_resumes); + if (keep_going) + continue; + else + break; + } else { + if (log) + log->PutCString("Process::RunThreadPlan(): got_event was true, but " + "the event pointer was null. How odd..."); + return_value = eExpressionInterrupted; + break; + } + } else { + // If we didn't get an event that means we've timed out... + // We will interrupt the process here. Depending on what we were asked + // to do we will + // either exit, or try with all threads running for the same timeout. + + if (log) { + if (options.GetTryAllThreads()) { + if (before_first_timeout) { + log->Printf("Process::RunThreadPlan(): Running function with " + "one thread timeout timed out."); + } else + log->Printf("Process::RunThreadPlan(): Restarting function with " + "all threads enabled " + "and timeout: %" PRIu64 + " timed out, abandoning execution.", + timeout ? timeout->count() : -1); + } else + log->Printf("Process::RunThreadPlan(): Running function with " + "timeout: %" PRIu64 " timed out, " + "abandoning execution.", + timeout ? timeout->count() : -1); + } - diagnostic_manager.Printf(eDiagnosticSeverityError, - "didn't get any event after resume %" PRIu32 ", exiting.", num_resumes); - return_value = eExpressionSetupError; - break; + // It is possible that between the time we issued the Halt, and we get + // around to calling Halt the target + // could have stopped. That's fine, Halt will figure that out and send + // the appropriate Stopped event. + // BUT it is also possible that we stopped & restarted (e.g. hit a + // signal with "stop" set to false.) In + // that case, we'll get the stopped & restarted event, and we should go + // back to waiting for the Halt's + // stopped event. That's what this while loop does. + + bool back_to_top = true; + uint32_t try_halt_again = 0; + bool do_halt = true; + const uint32_t num_retries = 5; + while (try_halt_again < num_retries) { + Error halt_error; + if (do_halt) { + if (log) + log->Printf("Process::RunThreadPlan(): Running Halt."); + const bool clear_thread_plans = false; + const bool use_run_lock = false; + Halt(clear_thread_plans, use_run_lock); + } + if (halt_error.Success()) { + if (log) + log->PutCString("Process::RunThreadPlan(): Halt succeeded."); + + got_event = + listener_sp->GetEvent(event_sp, std::chrono::milliseconds(500)); + + if (got_event) { + stop_state = + Process::ProcessEventData::GetStateFromEvent(event_sp.get()); + if (log) { + log->Printf("Process::RunThreadPlan(): Stopped with event: %s", + StateAsCString(stop_state)); + if (stop_state == lldb::eStateStopped && + Process::ProcessEventData::GetInterruptedFromEvent( + event_sp.get())) + log->PutCString(" Event was the Halt interruption event."); + } + + if (stop_state == lldb::eStateStopped) { + // Between the time we initiated the Halt and the time we + // delivered it, the process could have + // already finished its job. Check that here: + + if (thread->IsThreadPlanDone(thread_plan_sp.get())) { + if (log) + log->PutCString("Process::RunThreadPlan(): Even though we " + "timed out, the call plan was done. " + "Exiting wait loop."); + return_value = eExpressionCompleted; + back_to_top = false; + break; } - stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - - if (stop_state != eStateRunning) - { - bool restarted = false; - - if (stop_state == eStateStopped) - { - restarted = Process::ProcessEventData::GetRestartedFromEvent(event_sp.get()); - if (log) - log->Printf("Process::RunThreadPlan(): didn't get running event after " - "resume %d, got %s instead (restarted: %i, do_resume: %i, handle_running_event: %i).", - num_resumes, - StateAsCString(stop_state), - restarted, - do_resume, - handle_running_event); - } - - if (restarted) - { - // This is probably an overabundance of caution, I don't think I should ever get a stopped & restarted - // event here. But if I do, the best thing is to Halt and then get out of here. - const bool clear_thread_plans = false; - const bool use_run_lock = false; - Halt(clear_thread_plans, use_run_lock); - } - - diagnostic_manager.Printf(eDiagnosticSeverityError, - "didn't get running event after initial resume, got %s instead.", - StateAsCString(stop_state)); - return_value = eExpressionSetupError; - break; + if (Process::ProcessEventData::GetRestartedFromEvent( + event_sp.get())) { + if (log) + log->PutCString("Process::RunThreadPlan(): Went to halt " + "but got a restarted event, there must be " + "an un-restarted stopped event so try " + "again... " + "Exiting wait loop."); + try_halt_again++; + do_halt = false; + continue; } - if (log) - log->PutCString ("Process::RunThreadPlan(): resuming succeeded."); - // We need to call the function synchronously, so spin waiting for it to return. - // If we get interrupted while executing, we're going to lose our context, and - // won't be able to gather the result at this point. - // We set the timeout AFTER the resume, since the resume takes some time and we - // don't want to charge that to the timeout. - } - else - { - if (log) - log->PutCString ("Process::RunThreadPlan(): waiting for next event."); - } - - if (before_first_timeout) - { - if (options.GetTryAllThreads()) - { - one_thread_timeout = TimeValue::Now(); - one_thread_timeout.OffsetWithMicroSeconds(one_thread_timeout_usec); - timeout_ptr = &one_thread_timeout; - } - else - { - if (timeout_usec == 0) - timeout_ptr = nullptr; - else - { - final_timeout = TimeValue::Now(); - final_timeout.OffsetWithMicroSeconds (timeout_usec); - timeout_ptr = &final_timeout; - } + if (!options.GetTryAllThreads()) { + if (log) + log->PutCString("Process::RunThreadPlan(): try_all_threads " + "was false, we stopped so now we're " + "quitting."); + return_value = eExpressionInterrupted; + back_to_top = false; + break; } - } - else - { - if (timeout_usec == 0) - timeout_ptr = nullptr; - else - { - final_timeout = TimeValue::Now(); - final_timeout.OffsetWithMicroSeconds (all_threads_timeout_usec); - timeout_ptr = &final_timeout; + + if (before_first_timeout) { + // Set all the other threads to run, and return to the top of + // the loop, which will continue; + before_first_timeout = false; + thread_plan_sp->SetStopOthers(false); + if (log) + log->PutCString( + "Process::RunThreadPlan(): about to resume."); + + back_to_top = true; + break; + } else { + // Running all threads failed, so return Interrupted. + if (log) + log->PutCString("Process::RunThreadPlan(): running all " + "threads timed out."); + return_value = eExpressionInterrupted; + back_to_top = false; + break; } + } + } else { + if (log) + log->PutCString("Process::RunThreadPlan(): halt said it " + "succeeded, but I got no event. " + "I'm getting out of here passing Interrupted."); + return_value = eExpressionInterrupted; + back_to_top = false; + break; } + } else { + try_halt_again++; + continue; + } + } - do_resume = true; - handle_running_event = true; + if (!back_to_top || try_halt_again > num_retries) + break; + else + continue; + } + } // END WAIT LOOP + + // If we had to start up a temporary private state thread to run this thread + // plan, shut it down now. + if (backup_private_state_thread.IsJoinable()) { + StopPrivateStateThread(); + Error error; + m_private_state_thread = backup_private_state_thread; + if (stopper_base_plan_sp) { + thread->DiscardThreadPlansUpToPlan(stopper_base_plan_sp); + } + if (old_state != eStateInvalid) + m_public_state.SetValueNoLock(old_state); + } + + if (return_value != eExpressionCompleted && log) { + // Print a backtrace into the log so we can figure out where we are: + StreamString s; + s.PutCString("Thread state after unsuccessful completion: \n"); + thread->GetStackFrameStatus(s, 0, UINT32_MAX, true, UINT32_MAX); + log->PutString(s.GetString()); + } + // Restore the thread state if we are going to discard the plan execution. + // There are three cases where this + // could happen: + // 1) The execution successfully completed + // 2) We hit a breakpoint, and ignore_breakpoints was true + // 3) We got some other error, and discard_on_error was true + bool should_unwind = (return_value == eExpressionInterrupted && + options.DoesUnwindOnError()) || + (return_value == eExpressionHitBreakpoint && + options.DoesIgnoreBreakpoints()); + + if (return_value == eExpressionCompleted || should_unwind) { + thread_plan_sp->RestoreThreadState(); + } + + // Now do some processing on the results of the run: + if (return_value == eExpressionInterrupted || + return_value == eExpressionHitBreakpoint) { + if (log) { + StreamString s; + if (event_sp) + event_sp->Dump(&s); + else { + log->PutCString("Process::RunThreadPlan(): Stop event that " + "interrupted us is NULL."); + } - // Now wait for the process to stop again: - event_sp.reset(); + StreamString ts; - if (log) - { - if (timeout_ptr) - { - log->Printf ("Process::RunThreadPlan(): about to wait - now is %" PRIu64 " - endpoint is %" PRIu64, - TimeValue::Now().GetAsMicroSecondsSinceJan1_1970(), - timeout_ptr->GetAsMicroSecondsSinceJan1_1970()); - } - else - { - log->Printf ("Process::RunThreadPlan(): about to wait forever."); - } - } - -#ifdef LLDB_RUN_THREAD_HALT_WITH_EVENT - // See comment above... - if (miss_first_event) - { - usleep(1000); - miss_first_event = false; - got_event = false; - } - else -#endif - got_event = listener_sp->WaitForEvent (timeout_ptr, event_sp); - - if (got_event) - { - if (event_sp) - { - bool keep_going = false; - if (event_sp->GetType() == eBroadcastBitInterrupt) - { - const bool clear_thread_plans = false; - const bool use_run_lock = false; - Halt(clear_thread_plans, use_run_lock); - return_value = eExpressionInterrupted; - diagnostic_manager.PutCString(eDiagnosticSeverityRemark, "execution halted by user interrupt."); - if (log) - log->Printf( - "Process::RunThreadPlan(): Got interrupted by eBroadcastBitInterrupted, exiting."); - break; - } - else - { - stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - if (log) - log->Printf("Process::RunThreadPlan(): in while loop, got event: %s.", StateAsCString(stop_state)); - - switch (stop_state) - { - case lldb::eStateStopped: - { - // We stopped, figure out what we are going to do now. - ThreadSP thread_sp = GetThreadList().FindThreadByIndexID (thread_idx_id); - if (!thread_sp) - { - // Ooh, our thread has vanished. Unlikely that this was successful execution... - if (log) - log->Printf ("Process::RunThreadPlan(): execution completed but our thread (index-id=%u) has vanished.", thread_idx_id); - return_value = eExpressionInterrupted; - } - else - { - // If we were restarted, we just need to go back up to fetch another event. - if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) - { - if (log) - { - log->Printf ("Process::RunThreadPlan(): Got a stop and restart, so we'll continue waiting."); - } - keep_going = true; - do_resume = false; - handle_running_event = true; - } - else - { - StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); - StopReason stop_reason = eStopReasonInvalid; - if (stop_info_sp) - stop_reason = stop_info_sp->GetStopReason(); - - // FIXME: We only check if the stop reason is plan complete, should we make sure that - // it is OUR plan that is complete? - if (stop_reason == eStopReasonPlanComplete) - { - if (log) - log->PutCString ("Process::RunThreadPlan(): execution completed successfully."); - - // Restore the plan state so it will get reported as intended when we are done. - thread_plan_restorer.Clean(); - - return_value = eExpressionCompleted; - } - else - { - // Something restarted the target, so just wait for it to stop for real. - if (stop_reason == eStopReasonBreakpoint) - { - if (log) - log->Printf ("Process::RunThreadPlan() stopped for breakpoint: %s.", stop_info_sp->GetDescription()); - return_value = eExpressionHitBreakpoint; - if (!options.DoesIgnoreBreakpoints()) - { - // Restore the plan state and then force Private to false. We are - // going to stop because of this plan so we need it to become a public - // plan or it won't report correctly when we continue to its termination - // later on. - thread_plan_restorer.Clean(); - if (thread_plan_sp) - thread_plan_sp->SetPrivate(false); - event_to_broadcast_sp = event_sp; - } - } - else - { - if (log) - log->PutCString ("Process::RunThreadPlan(): thread plan didn't successfully complete."); - if (!options.DoesUnwindOnError()) - event_to_broadcast_sp = event_sp; - return_value = eExpressionInterrupted; - } - } - } - } - } - break; - - case lldb::eStateRunning: - // This shouldn't really happen, but sometimes we do get two running events without an - // intervening stop, and in that case we should just go back to waiting for the stop. - do_resume = false; - keep_going = true; - handle_running_event = false; - break; - - default: - if (log) - log->Printf("Process::RunThreadPlan(): execution stopped with unexpected state: %s.", StateAsCString(stop_state)); - - if (stop_state == eStateExited) - event_to_broadcast_sp = event_sp; - - diagnostic_manager.PutCString(eDiagnosticSeverityError, - "execution stopped with unexpected state."); - return_value = eExpressionInterrupted; - break; - } - } + const char *event_explanation = nullptr; - if (keep_going) - continue; - else - break; - } - else - { - if (log) - log->PutCString ("Process::RunThreadPlan(): got_event was true, but the event pointer was null. How odd..."); - return_value = eExpressionInterrupted; - break; - } + do { + if (!event_sp) { + event_explanation = "<no event>"; + break; + } else if (event_sp->GetType() == eBroadcastBitInterrupt) { + event_explanation = "<user interrupt>"; + break; + } else { + const Process::ProcessEventData *event_data = + Process::ProcessEventData::GetEventDataFromEvent( + event_sp.get()); + + if (!event_data) { + event_explanation = "<no event data>"; + break; } - else - { - // If we didn't get an event that means we've timed out... - // We will interrupt the process here. Depending on what we were asked to do we will - // either exit, or try with all threads running for the same timeout. - - if (log) { - if (options.GetTryAllThreads()) - { - if (before_first_timeout) - { - if (timeout_usec != 0) - { - log->Printf ("Process::RunThreadPlan(): Running function with one thread timeout timed out, " - "running for %" PRIu32 " usec with all threads enabled.", - all_threads_timeout_usec); - } - else - { - log->Printf ("Process::RunThreadPlan(): Running function with one thread timeout timed out, " - "running forever with all threads enabled."); - } - } - else - log->Printf ("Process::RunThreadPlan(): Restarting function with all threads enabled " - "and timeout: %u timed out, abandoning execution.", - timeout_usec); - } - else - log->Printf ("Process::RunThreadPlan(): Running function with timeout: %u timed out, " - "abandoning execution.", - timeout_usec); - } - // It is possible that between the time we issued the Halt, and we get around to calling Halt the target - // could have stopped. That's fine, Halt will figure that out and send the appropriate Stopped event. - // BUT it is also possible that we stopped & restarted (e.g. hit a signal with "stop" set to false.) In - // that case, we'll get the stopped & restarted event, and we should go back to waiting for the Halt's - // stopped event. That's what this while loop does. - - bool back_to_top = true; - uint32_t try_halt_again = 0; - bool do_halt = true; - const uint32_t num_retries = 5; - while (try_halt_again < num_retries) - { - Error halt_error; - if (do_halt) - { - if (log) - log->Printf ("Process::RunThreadPlan(): Running Halt."); - const bool clear_thread_plans = false; - const bool use_run_lock = false; - Halt(clear_thread_plans, use_run_lock); - } - if (halt_error.Success()) - { - if (log) - log->PutCString ("Process::RunThreadPlan(): Halt succeeded."); - - real_timeout = TimeValue::Now(); - real_timeout.OffsetWithMicroSeconds(500000); - - got_event = listener_sp->WaitForEvent(&real_timeout, event_sp); - - if (got_event) - { - stop_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); - if (log) - { - log->Printf ("Process::RunThreadPlan(): Stopped with event: %s", StateAsCString(stop_state)); - if (stop_state == lldb::eStateStopped - && Process::ProcessEventData::GetInterruptedFromEvent(event_sp.get())) - log->PutCString (" Event was the Halt interruption event."); - } - - if (stop_state == lldb::eStateStopped) - { - // Between the time we initiated the Halt and the time we delivered it, the process could have - // already finished its job. Check that here: - - if (thread->IsThreadPlanDone (thread_plan_sp.get())) - { - if (log) - log->PutCString ("Process::RunThreadPlan(): Even though we timed out, the call plan was done. " - "Exiting wait loop."); - return_value = eExpressionCompleted; - back_to_top = false; - break; - } - - if (Process::ProcessEventData::GetRestartedFromEvent(event_sp.get())) - { - if (log) - log->PutCString ("Process::RunThreadPlan(): Went to halt but got a restarted event, there must be an un-restarted stopped event so try again... " - "Exiting wait loop."); - try_halt_again++; - do_halt = false; - continue; - } - - if (!options.GetTryAllThreads()) - { - if (log) - log->PutCString ("Process::RunThreadPlan(): try_all_threads was false, we stopped so now we're quitting."); - return_value = eExpressionInterrupted; - back_to_top = false; - break; - } - - if (before_first_timeout) - { - // Set all the other threads to run, and return to the top of the loop, which will continue; - before_first_timeout = false; - thread_plan_sp->SetStopOthers (false); - if (log) - log->PutCString ("Process::RunThreadPlan(): about to resume."); - - back_to_top = true; - break; - } - else - { - // Running all threads failed, so return Interrupted. - if (log) - log->PutCString("Process::RunThreadPlan(): running all threads timed out."); - return_value = eExpressionInterrupted; - back_to_top = false; - break; - } - } - } - else - { if (log) - log->PutCString("Process::RunThreadPlan(): halt said it succeeded, but I got no event. " - "I'm getting out of here passing Interrupted."); - return_value = eExpressionInterrupted; - back_to_top = false; - break; - } - } - else - { - try_halt_again++; - continue; - } - } + Process *process = event_data->GetProcessSP().get(); - if (!back_to_top || try_halt_again > num_retries) - break; - else - continue; + if (!process) { + event_explanation = "<no process>"; + break; } - } // END WAIT LOOP - - // If we had to start up a temporary private state thread to run this thread plan, shut it down now. - if (backup_private_state_thread.IsJoinable()) - { - StopPrivateStateThread(); - Error error; - m_private_state_thread = backup_private_state_thread; - if (stopper_base_plan_sp) - { - thread->DiscardThreadPlansUpToPlan(stopper_base_plan_sp); - } - if (old_state != eStateInvalid) - m_public_state.SetValueNoLock(old_state); - } - if (return_value != eExpressionCompleted && log) - { - // Print a backtrace into the log so we can figure out where we are: - StreamString s; - s.PutCString("Thread state after unsuccessful completion: \n"); - thread->GetStackFrameStatus (s, - 0, - UINT32_MAX, - true, - UINT32_MAX); - log->PutCString(s.GetData()); + ThreadList &thread_list = process->GetThreadList(); - } - // Restore the thread state if we are going to discard the plan execution. There are three cases where this - // could happen: - // 1) The execution successfully completed - // 2) We hit a breakpoint, and ignore_breakpoints was true - // 3) We got some other error, and discard_on_error was true - bool should_unwind = (return_value == eExpressionInterrupted && options.DoesUnwindOnError()) - || (return_value == eExpressionHitBreakpoint && options.DoesIgnoreBreakpoints()); - - if (return_value == eExpressionCompleted - || should_unwind) - { - thread_plan_sp->RestoreThreadState(); - } - - // Now do some processing on the results of the run: - if (return_value == eExpressionInterrupted || return_value == eExpressionHitBreakpoint) - { - if (log) - { - StreamString s; - if (event_sp) - event_sp->Dump (&s); - else - { - log->PutCString ("Process::RunThreadPlan(): Stop event that interrupted us is NULL."); - } - - StreamString ts; + uint32_t num_threads = thread_list.GetSize(); + uint32_t thread_index; - const char *event_explanation = nullptr; + ts.Printf("<%u threads> ", num_threads); - do - { - if (!event_sp) - { - event_explanation = "<no event>"; - break; - } - else if (event_sp->GetType() == eBroadcastBitInterrupt) - { - event_explanation = "<user interrupt>"; - break; - } - else - { - const Process::ProcessEventData *event_data = Process::ProcessEventData::GetEventDataFromEvent (event_sp.get()); - - if (!event_data) - { - event_explanation = "<no event data>"; - break; - } - - Process *process = event_data->GetProcessSP().get(); - - if (!process) - { - event_explanation = "<no process>"; - break; - } - - ThreadList &thread_list = process->GetThreadList(); - - uint32_t num_threads = thread_list.GetSize(); - uint32_t thread_index; - - ts.Printf("<%u threads> ", num_threads); - - for (thread_index = 0; - thread_index < num_threads; - ++thread_index) - { - Thread *thread = thread_list.GetThreadAtIndex(thread_index).get(); - - if (!thread) - { - ts.Printf("<?> "); - continue; - } - - ts.Printf("<0x%4.4" PRIx64 " ", thread->GetID()); - RegisterContext *register_context = thread->GetRegisterContext().get(); - - if (register_context) - ts.Printf("[ip 0x%" PRIx64 "] ", register_context->GetPC()); - else - ts.Printf("[ip unknown] "); - - // Show the private stop info here, the public stop info will be from the last natural stop. - lldb::StopInfoSP stop_info_sp = thread->GetPrivateStopInfo(); - if (stop_info_sp) - { - const char *stop_desc = stop_info_sp->GetDescription(); - if (stop_desc) - ts.PutCString (stop_desc); - } - ts.Printf(">"); - } - - event_explanation = ts.GetData(); - } - } while (0); + for (thread_index = 0; thread_index < num_threads; ++thread_index) { + Thread *thread = thread_list.GetThreadAtIndex(thread_index).get(); - if (event_explanation) - log->Printf("Process::RunThreadPlan(): execution interrupted: %s %s", s.GetData(), event_explanation); - else - log->Printf("Process::RunThreadPlan(): execution interrupted: %s", s.GetData()); + if (!thread) { + ts.Printf("<?> "); + continue; + } + + ts.Printf("<0x%4.4" PRIx64 " ", thread->GetID()); + RegisterContext *register_context = + thread->GetRegisterContext().get(); + + if (register_context) + ts.Printf("[ip 0x%" PRIx64 "] ", register_context->GetPC()); + else + ts.Printf("[ip unknown] "); + + // Show the private stop info here, the public stop info will be + // from the last natural stop. + lldb::StopInfoSP stop_info_sp = thread->GetPrivateStopInfo(); + if (stop_info_sp) { + const char *stop_desc = stop_info_sp->GetDescription(); + if (stop_desc) + ts.PutCString(stop_desc); + } + ts.Printf(">"); } - if (should_unwind) - { - if (log) - log->Printf ("Process::RunThreadPlan: ExecutionInterrupted - discarding thread plans up to %p.", - static_cast<void*>(thread_plan_sp.get())); - thread->DiscardThreadPlansUpToPlan (thread_plan_sp); - } - else - { - if (log) - log->Printf ("Process::RunThreadPlan: ExecutionInterrupted - for plan: %p not discarding.", - static_cast<void*>(thread_plan_sp.get())); - } - } - else if (return_value == eExpressionSetupError) - { - if (log) - log->PutCString("Process::RunThreadPlan(): execution set up error."); + event_explanation = ts.GetData(); + } + } while (0); - if (options.DoesUnwindOnError()) - { - thread->DiscardThreadPlansUpToPlan (thread_plan_sp); - } - } + if (event_explanation) + log->Printf("Process::RunThreadPlan(): execution interrupted: %s %s", + s.GetData(), event_explanation); else - { - if (thread->IsThreadPlanDone (thread_plan_sp.get())) - { - if (log) - log->PutCString("Process::RunThreadPlan(): thread plan is done"); - return_value = eExpressionCompleted; - } - else if (thread->WasThreadPlanDiscarded (thread_plan_sp.get())) - { - if (log) - log->PutCString("Process::RunThreadPlan(): thread plan was discarded"); - return_value = eExpressionDiscarded; - } - else - { - if (log) - log->PutCString("Process::RunThreadPlan(): thread plan stopped in mid course"); - if (options.DoesUnwindOnError() && thread_plan_sp) - { - if (log) - log->PutCString("Process::RunThreadPlan(): discarding thread plan 'cause unwind_on_error is set."); - thread->DiscardThreadPlansUpToPlan (thread_plan_sp); - } - } - } + log->Printf("Process::RunThreadPlan(): execution interrupted: %s", + s.GetData()); + } - // Thread we ran the function in may have gone away because we ran the target - // Check that it's still there, and if it is put it back in the context. Also restore the - // frame in the context if it is still present. - thread = GetThreadList().FindThreadByIndexID(thread_idx_id, true).get(); - if (thread) - { - exe_ctx.SetFrameSP (thread->GetFrameWithStackID (ctx_frame_id)); + if (should_unwind) { + if (log) + log->Printf("Process::RunThreadPlan: ExecutionInterrupted - " + "discarding thread plans up to %p.", + static_cast<void *>(thread_plan_sp.get())); + thread->DiscardThreadPlansUpToPlan(thread_plan_sp); + } else { + if (log) + log->Printf("Process::RunThreadPlan: ExecutionInterrupted - for " + "plan: %p not discarding.", + static_cast<void *>(thread_plan_sp.get())); + } + } else if (return_value == eExpressionSetupError) { + if (log) + log->PutCString("Process::RunThreadPlan(): execution set up error."); + + if (options.DoesUnwindOnError()) { + thread->DiscardThreadPlansUpToPlan(thread_plan_sp); + } + } else { + if (thread->IsThreadPlanDone(thread_plan_sp.get())) { + if (log) + log->PutCString("Process::RunThreadPlan(): thread plan is done"); + return_value = eExpressionCompleted; + } else if (thread->WasThreadPlanDiscarded(thread_plan_sp.get())) { + if (log) + log->PutCString( + "Process::RunThreadPlan(): thread plan was discarded"); + return_value = eExpressionDiscarded; + } else { + if (log) + log->PutCString( + "Process::RunThreadPlan(): thread plan stopped in mid course"); + if (options.DoesUnwindOnError() && thread_plan_sp) { + if (log) + log->PutCString("Process::RunThreadPlan(): discarding thread plan " + "'cause unwind_on_error is set."); + thread->DiscardThreadPlansUpToPlan(thread_plan_sp); } + } + } - // Also restore the current process'es selected frame & thread, since this function calling may - // be done behind the user's back. - - if (selected_tid != LLDB_INVALID_THREAD_ID) - { - if (GetThreadList().SetSelectedThreadByIndexID (selected_tid) && selected_stack_id.IsValid()) - { - // We were able to restore the selected thread, now restore the frame: - std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex()); - StackFrameSP old_frame_sp = GetThreadList().GetSelectedThread()->GetFrameWithStackID(selected_stack_id); - if (old_frame_sp) - GetThreadList().GetSelectedThread()->SetSelectedFrame(old_frame_sp.get()); - } - } + // Thread we ran the function in may have gone away because we ran the + // target + // Check that it's still there, and if it is put it back in the context. + // Also restore the + // frame in the context if it is still present. + thread = GetThreadList().FindThreadByIndexID(thread_idx_id, true).get(); + if (thread) { + exe_ctx.SetFrameSP(thread->GetFrameWithStackID(ctx_frame_id)); } - // If the process exited during the run of the thread plan, notify everyone. + // Also restore the current process'es selected frame & thread, since this + // function calling may + // be done behind the user's back. - if (event_to_broadcast_sp) - { - if (log) - log->PutCString("Process::RunThreadPlan(): rebroadcasting event."); - BroadcastEvent(event_to_broadcast_sp); + if (selected_tid != LLDB_INVALID_THREAD_ID) { + if (GetThreadList().SetSelectedThreadByIndexID(selected_tid) && + selected_stack_id.IsValid()) { + // We were able to restore the selected thread, now restore the frame: + std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex()); + StackFrameSP old_frame_sp = + GetThreadList().GetSelectedThread()->GetFrameWithStackID( + selected_stack_id); + if (old_frame_sp) + GetThreadList().GetSelectedThread()->SetSelectedFrame( + old_frame_sp.get()); + } } + } - return return_value; -} + // If the process exited during the run of the thread plan, notify everyone. -const char * -Process::ExecutionResultAsCString (ExpressionResults result) -{ - const char *result_name; - - switch (result) - { - case eExpressionCompleted: - result_name = "eExpressionCompleted"; - break; - case eExpressionDiscarded: - result_name = "eExpressionDiscarded"; - break; - case eExpressionInterrupted: - result_name = "eExpressionInterrupted"; - break; - case eExpressionHitBreakpoint: - result_name = "eExpressionHitBreakpoint"; - break; - case eExpressionSetupError: - result_name = "eExpressionSetupError"; - break; - case eExpressionParseError: - result_name = "eExpressionParseError"; - break; - case eExpressionResultUnavailable: - result_name = "eExpressionResultUnavailable"; - break; - case eExpressionTimedOut: - result_name = "eExpressionTimedOut"; - break; - case eExpressionStoppedForDebug: - result_name = "eExpressionStoppedForDebug"; - break; - } - return result_name; -} + if (event_to_broadcast_sp) { + if (log) + log->PutCString("Process::RunThreadPlan(): rebroadcasting event."); + BroadcastEvent(event_to_broadcast_sp); + } + + return return_value; +} + +const char *Process::ExecutionResultAsCString(ExpressionResults result) { + const char *result_name; + + switch (result) { + case eExpressionCompleted: + result_name = "eExpressionCompleted"; + break; + case eExpressionDiscarded: + result_name = "eExpressionDiscarded"; + break; + case eExpressionInterrupted: + result_name = "eExpressionInterrupted"; + break; + case eExpressionHitBreakpoint: + result_name = "eExpressionHitBreakpoint"; + break; + case eExpressionSetupError: + result_name = "eExpressionSetupError"; + break; + case eExpressionParseError: + result_name = "eExpressionParseError"; + break; + case eExpressionResultUnavailable: + result_name = "eExpressionResultUnavailable"; + break; + case eExpressionTimedOut: + result_name = "eExpressionTimedOut"; + break; + case eExpressionStoppedForDebug: + result_name = "eExpressionStoppedForDebug"; + break; + } + return result_name; +} + +void Process::GetStatus(Stream &strm) { + const StateType state = GetState(); + if (StateIsStoppedState(state, false)) { + if (state == eStateExited) { + int exit_status = GetExitStatus(); + const char *exit_description = GetExitDescription(); + strm.Printf("Process %" PRIu64 " exited with status = %i (0x%8.8x) %s\n", + GetID(), exit_status, exit_status, + exit_description ? exit_description : ""); + } else { + if (state == eStateConnected) + strm.Printf("Connected to remote target.\n"); + else + strm.Printf("Process %" PRIu64 " %s\n", GetID(), StateAsCString(state)); + } + } else { + strm.Printf("Process %" PRIu64 " is running.\n", GetID()); + } +} + +size_t Process::GetThreadStatus(Stream &strm, + bool only_threads_with_stop_reason, + uint32_t start_frame, uint32_t num_frames, + uint32_t num_frames_with_source, + bool stop_format) { + size_t num_thread_infos_dumped = 0; + + // You can't hold the thread list lock while calling Thread::GetStatus. That + // very well might run code (e.g. if we need it + // to get return values or arguments.) For that to work the process has to be + // able to acquire it. So instead copy the thread + // ID's, and look them up one by one: + + uint32_t num_threads; + std::vector<lldb::tid_t> thread_id_array; + // Scope for thread list locker; + { + std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex()); + ThreadList &curr_thread_list = GetThreadList(); + num_threads = curr_thread_list.GetSize(); + uint32_t idx; + thread_id_array.resize(num_threads); + for (idx = 0; idx < num_threads; ++idx) + thread_id_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetID(); + } + + for (uint32_t i = 0; i < num_threads; i++) { + ThreadSP thread_sp(GetThreadList().FindThreadByID(thread_id_array[i])); + if (thread_sp) { + if (only_threads_with_stop_reason) { + StopInfoSP stop_info_sp = thread_sp->GetStopInfo(); + if (!stop_info_sp || !stop_info_sp->IsValid()) + continue; + } + thread_sp->GetStatus(strm, start_frame, num_frames, + num_frames_with_source, + stop_format); + ++num_thread_infos_dumped; + } else { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::GetThreadStatus - thread 0x" PRIu64 + " vanished while running Thread::GetStatus."); + } + } + return num_thread_infos_dumped; +} + +void Process::AddInvalidMemoryRegion(const LoadRange ®ion) { + m_memory_cache.AddInvalidRange(region.GetRangeBase(), region.GetByteSize()); +} + +bool Process::RemoveInvalidMemoryRange(const LoadRange ®ion) { + return m_memory_cache.RemoveInvalidRange(region.GetRangeBase(), + region.GetByteSize()); +} + +void Process::AddPreResumeAction(PreResumeActionCallback callback, + void *baton) { + m_pre_resume_actions.push_back(PreResumeCallbackAndBaton(callback, baton)); +} + +bool Process::RunPreResumeActions() { + bool result = true; + while (!m_pre_resume_actions.empty()) { + struct PreResumeCallbackAndBaton action = m_pre_resume_actions.back(); + m_pre_resume_actions.pop_back(); + bool this_result = action.callback(action.baton); + if (result) + result = this_result; + } + return result; +} + +void Process::ClearPreResumeActions() { m_pre_resume_actions.clear(); } + +void Process::ClearPreResumeAction(PreResumeActionCallback callback, void *baton) +{ + PreResumeCallbackAndBaton element(callback, baton); + auto found_iter = std::find(m_pre_resume_actions.begin(), m_pre_resume_actions.end(), element); + if (found_iter != m_pre_resume_actions.end()) + { + m_pre_resume_actions.erase(found_iter); + } +} + +ProcessRunLock &Process::GetRunLock() { + if (m_private_state_thread.EqualsThread(Host::GetCurrentThread())) + return m_private_run_lock; + else + return m_public_run_lock; +} + +void Process::Flush() { + m_thread_list.Flush(); + m_extended_thread_list.Flush(); + m_extended_thread_stop_id = 0; + m_queue_list.Clear(); + m_queue_list_stop_id = 0; +} + +void Process::DidExec() { + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); + if (log) + log->Printf("Process::%s()", __FUNCTION__); + + Target &target = GetTarget(); + target.CleanupProcess(); + target.ClearModules(false); + m_dynamic_checkers_ap.reset(); + m_abi_sp.reset(); + m_system_runtime_ap.reset(); + m_os_ap.reset(); + m_dyld_ap.reset(); + m_jit_loaders_ap.reset(); + m_image_tokens.clear(); + m_allocated_memory_cache.Clear(); + m_language_runtimes.clear(); + m_instrumentation_runtimes.clear(); + m_thread_list.DiscardThreadPlans(); + m_memory_cache.Clear(true); + m_stop_info_override_callback = nullptr; + DoDidExec(); + CompleteAttach(); + // Flush the process (threads and all stack frames) after running + // CompleteAttach() + // in case the dynamic loader loaded things in new locations. + Flush(); + + // After we figure out what was loaded/unloaded in CompleteAttach, + // we need to let the target know so it can do any cleanup it needs to. + target.DidExec(); +} + +addr_t Process::ResolveIndirectFunction(const Address *address, Error &error) { + if (address == nullptr) { + error.SetErrorString("Invalid address argument"); + return LLDB_INVALID_ADDRESS; + } + + addr_t function_addr = LLDB_INVALID_ADDRESS; + + addr_t addr = address->GetLoadAddress(&GetTarget()); + std::map<addr_t, addr_t>::const_iterator iter = + m_resolved_indirect_addresses.find(addr); + if (iter != m_resolved_indirect_addresses.end()) { + function_addr = (*iter).second; + } else { + if (!InferiorCall(this, address, function_addr)) { + Symbol *symbol = address->CalculateSymbolContextSymbol(); + error.SetErrorStringWithFormat( + "Unable to call resolver for indirect function %s", + symbol ? symbol->GetName().AsCString() : "<UNKNOWN>"); + function_addr = LLDB_INVALID_ADDRESS; + } else { + m_resolved_indirect_addresses.insert( + std::pair<addr_t, addr_t>(addr, function_addr)); + } + } + return function_addr; +} + +void Process::ModulesDidLoad(ModuleList &module_list) { + SystemRuntime *sys_runtime = GetSystemRuntime(); + if (sys_runtime) { + sys_runtime->ModulesDidLoad(module_list); + } + + GetJITLoaders().ModulesDidLoad(module_list); + + // Give runtimes a chance to be created. + InstrumentationRuntime::ModulesDidLoad(module_list, this, + m_instrumentation_runtimes); + + // Tell runtimes about new modules. + for (auto pos = m_instrumentation_runtimes.begin(); + pos != m_instrumentation_runtimes.end(); ++pos) { + InstrumentationRuntimeSP runtime = pos->second; + runtime->ModulesDidLoad(module_list); + } + + // Let any language runtimes we have already created know + // about the modules that loaded. + + // Iterate over a copy of this language runtime list in case + // the language runtime ModulesDidLoad somehow causes the language + // riuntime to be unloaded. + LanguageRuntimeCollection language_runtimes(m_language_runtimes); + for (const auto &pair : language_runtimes) { + // We must check language_runtime_sp to make sure it is not + // nullptr as we might cache the fact that we didn't have a + // language runtime for a language. + LanguageRuntimeSP language_runtime_sp = pair.second; + if (language_runtime_sp) + language_runtime_sp->ModulesDidLoad(module_list); + } + + // If we don't have an operating system plug-in, try to load one since + // loading shared libraries might cause a new one to try and load + if (!m_os_ap) + LoadOperatingSystemPlugin(false); + + // Give structured-data plugins a chance to see the modified modules. + for (auto pair : m_structured_data_plugin_map) { + if (pair.second) + pair.second->ModulesDidLoad(*this, module_list); + } +} + +void Process::PrintWarning(uint64_t warning_type, const void *repeat_key, + const char *fmt, ...) { + bool print_warning = true; + + StreamSP stream_sp = GetTarget().GetDebugger().GetAsyncOutputStream(); + if (!stream_sp) + return; + if (warning_type == eWarningsOptimization && !GetWarningsOptimization()) { + return; + } + + if (repeat_key != nullptr) { + WarningsCollection::iterator it = m_warnings_issued.find(warning_type); + if (it == m_warnings_issued.end()) { + m_warnings_issued[warning_type] = WarningsPointerSet(); + m_warnings_issued[warning_type].insert(repeat_key); + } else { + if (it->second.find(repeat_key) != it->second.end()) { + print_warning = false; + } else { + it->second.insert(repeat_key); + } + } + } + + if (print_warning) { + va_list args; + va_start(args, fmt); + stream_sp->PrintfVarArg(fmt, args); + va_end(args); + } +} + +void Process::PrintWarningOptimization(const SymbolContext &sc) { + if (GetWarningsOptimization() && sc.module_sp && + !sc.module_sp->GetFileSpec().GetFilename().IsEmpty() && sc.function && + sc.function->GetIsOptimized()) { + PrintWarning(Process::Warnings::eWarningsOptimization, sc.module_sp.get(), + "%s was compiled with optimization - stepping may behave " + "oddly; variables may not be available.\n", + sc.module_sp->GetFileSpec().GetFilename().GetCString()); + } +} + +bool Process::GetProcessInfo(ProcessInstanceInfo &info) { + info.Clear(); + + PlatformSP platform_sp = GetTarget().GetPlatform(); + if (!platform_sp) + return false; -void -Process::GetStatus (Stream &strm) -{ - const StateType state = GetState(); - if (StateIsStoppedState(state, false)) - { - if (state == eStateExited) - { - int exit_status = GetExitStatus(); - const char *exit_description = GetExitDescription(); - strm.Printf ("Process %" PRIu64 " exited with status = %i (0x%8.8x) %s\n", - GetID(), - exit_status, - exit_status, - exit_description ? exit_description : ""); - } - else - { - if (state == eStateConnected) - strm.Printf ("Connected to remote target.\n"); - else - strm.Printf ("Process %" PRIu64 " %s\n", GetID(), StateAsCString (state)); - } - } - else - { - strm.Printf ("Process %" PRIu64 " is running.\n", GetID()); - } + return platform_sp->GetProcessInfo(GetID(), info); } -size_t -Process::GetThreadStatus (Stream &strm, - bool only_threads_with_stop_reason, - uint32_t start_frame, - uint32_t num_frames, - uint32_t num_frames_with_source) -{ - size_t num_thread_infos_dumped = 0; - - // You can't hold the thread list lock while calling Thread::GetStatus. That very well might run code (e.g. if we need it - // to get return values or arguments.) For that to work the process has to be able to acquire it. So instead copy the thread - // ID's, and look them up one by one: - - uint32_t num_threads; - std::vector<lldb::tid_t> thread_id_array; - //Scope for thread list locker; - { - std::lock_guard<std::recursive_mutex> guard(GetThreadList().GetMutex()); - ThreadList &curr_thread_list = GetThreadList(); - num_threads = curr_thread_list.GetSize(); - uint32_t idx; - thread_id_array.resize(num_threads); - for (idx = 0; idx < num_threads; ++idx) - thread_id_array[idx] = curr_thread_list.GetThreadAtIndex(idx)->GetID(); - } - - for (uint32_t i = 0; i < num_threads; i++) - { - ThreadSP thread_sp(GetThreadList().FindThreadByID(thread_id_array[i])); - if (thread_sp) - { - if (only_threads_with_stop_reason) - { - StopInfoSP stop_info_sp = thread_sp->GetStopInfo(); - if (!stop_info_sp || !stop_info_sp->IsValid()) - continue; - } - thread_sp->GetStatus (strm, - start_frame, - num_frames, - num_frames_with_source); - ++num_thread_infos_dumped; - } - else - { - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf("Process::GetThreadStatus - thread 0x" PRIu64 " vanished while running Thread::GetStatus."); - } - } - return num_thread_infos_dumped; -} +ThreadCollectionSP Process::GetHistoryThreads(lldb::addr_t addr) { + ThreadCollectionSP threads; -void -Process::AddInvalidMemoryRegion (const LoadRange ®ion) -{ - m_memory_cache.AddInvalidRange(region.GetRangeBase(), region.GetByteSize()); -} + const MemoryHistorySP &memory_history = + MemoryHistory::FindPlugin(shared_from_this()); -bool -Process::RemoveInvalidMemoryRange (const LoadRange ®ion) -{ - return m_memory_cache.RemoveInvalidRange(region.GetRangeBase(), region.GetByteSize()); -} + if (!memory_history) { + return threads; + } -void -Process::AddPreResumeAction (PreResumeActionCallback callback, void *baton) -{ - m_pre_resume_actions.push_back(PreResumeCallbackAndBaton (callback, baton)); -} + threads.reset(new ThreadCollection(memory_history->GetHistoryThreads(addr))); -bool -Process::RunPreResumeActions () -{ - bool result = true; - while (!m_pre_resume_actions.empty()) - { - struct PreResumeCallbackAndBaton action = m_pre_resume_actions.back(); - m_pre_resume_actions.pop_back(); - bool this_result = action.callback (action.baton); - if (result) - result = this_result; - } - return result; + return threads; } -void -Process::ClearPreResumeActions () -{ - m_pre_resume_actions.clear(); +InstrumentationRuntimeSP +Process::GetInstrumentationRuntime(lldb::InstrumentationRuntimeType type) { + InstrumentationRuntimeCollection::iterator pos; + pos = m_instrumentation_runtimes.find(type); + if (pos == m_instrumentation_runtimes.end()) { + return InstrumentationRuntimeSP(); + } else + return (*pos).second; } -ProcessRunLock & -Process::GetRunLock() -{ - if (m_private_state_thread.EqualsThread(Host::GetCurrentThread())) - return m_private_run_lock; - else - return m_public_run_lock; +bool Process::GetModuleSpec(const FileSpec &module_file_spec, + const ArchSpec &arch, ModuleSpec &module_spec) { + module_spec.Clear(); + return false; } -void -Process::Flush () -{ - m_thread_list.Flush(); - m_extended_thread_list.Flush(); - m_extended_thread_stop_id = 0; - m_queue_list.Clear(); - m_queue_list_stop_id = 0; +size_t Process::AddImageToken(lldb::addr_t image_ptr) { + m_image_tokens.push_back(image_ptr); + return m_image_tokens.size() - 1; } -void -Process::DidExec () -{ - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS)); - if (log) - log->Printf ("Process::%s()", __FUNCTION__); - - Target &target = GetTarget(); - target.CleanupProcess (); - target.ClearModules(false); - m_dynamic_checkers_ap.reset(); - m_abi_sp.reset(); - m_system_runtime_ap.reset(); - m_os_ap.reset(); - m_dyld_ap.reset(); - m_jit_loaders_ap.reset(); - m_image_tokens.clear(); - m_allocated_memory_cache.Clear(); - m_language_runtimes.clear(); - m_instrumentation_runtimes.clear(); - m_thread_list.DiscardThreadPlans(); - m_memory_cache.Clear(true); - m_stop_info_override_callback = nullptr; - DoDidExec(); - CompleteAttach (); - // Flush the process (threads and all stack frames) after running CompleteAttach() - // in case the dynamic loader loaded things in new locations. - Flush(); - - // After we figure out what was loaded/unloaded in CompleteAttach, - // we need to let the target know so it can do any cleanup it needs to. - target.DidExec(); +lldb::addr_t Process::GetImagePtrFromToken(size_t token) const { + if (token < m_image_tokens.size()) + return m_image_tokens[token]; + return LLDB_INVALID_IMAGE_TOKEN; } -addr_t -Process::ResolveIndirectFunction(const Address *address, Error &error) -{ - if (address == nullptr) - { - error.SetErrorString("Invalid address argument"); - return LLDB_INVALID_ADDRESS; - } - - addr_t function_addr = LLDB_INVALID_ADDRESS; - - addr_t addr = address->GetLoadAddress(&GetTarget()); - std::map<addr_t,addr_t>::const_iterator iter = m_resolved_indirect_addresses.find(addr); - if (iter != m_resolved_indirect_addresses.end()) - { - function_addr = (*iter).second; - } - else - { - if (!InferiorCall(this, address, function_addr)) - { - Symbol *symbol = address->CalculateSymbolContextSymbol(); - error.SetErrorStringWithFormat ("Unable to call resolver for indirect function %s", - symbol ? symbol->GetName().AsCString() : "<UNKNOWN>"); - function_addr = LLDB_INVALID_ADDRESS; - } - else - { - m_resolved_indirect_addresses.insert(std::pair<addr_t, addr_t>(addr, function_addr)); - } - } - return function_addr; +void Process::ResetImageToken(size_t token) { + if (token < m_image_tokens.size()) + m_image_tokens[token] = LLDB_INVALID_IMAGE_TOKEN; } -void -Process::ModulesDidLoad (ModuleList &module_list) -{ - SystemRuntime *sys_runtime = GetSystemRuntime(); - if (sys_runtime) - { - sys_runtime->ModulesDidLoad (module_list); - } +Address +Process::AdvanceAddressToNextBranchInstruction(Address default_stop_addr, + AddressRange range_bounds) { + Target &target = GetTarget(); + DisassemblerSP disassembler_sp; + InstructionList *insn_list = nullptr; - GetJITLoaders().ModulesDidLoad (module_list); - - // Give runtimes a chance to be created. - InstrumentationRuntime::ModulesDidLoad(module_list, this, m_instrumentation_runtimes); - - // Tell runtimes about new modules. - for (auto pos = m_instrumentation_runtimes.begin(); pos != m_instrumentation_runtimes.end(); ++pos) - { - InstrumentationRuntimeSP runtime = pos->second; - runtime->ModulesDidLoad(module_list); - } + Address retval = default_stop_addr; - // Let any language runtimes we have already created know - // about the modules that loaded. - - // Iterate over a copy of this language runtime list in case - // the language runtime ModulesDidLoad somehow causes the language - // riuntime to be unloaded. - LanguageRuntimeCollection language_runtimes(m_language_runtimes); - for (const auto &pair: language_runtimes) - { - // We must check language_runtime_sp to make sure it is not - // nullptr as we might cache the fact that we didn't have a - // language runtime for a language. - LanguageRuntimeSP language_runtime_sp = pair.second; - if (language_runtime_sp) - language_runtime_sp->ModulesDidLoad(module_list); - } + if (!target.GetUseFastStepping()) + return retval; + if (!default_stop_addr.IsValid()) + return retval; - // If we don't have an operating system plug-in, try to load one since - // loading shared libraries might cause a new one to try and load - if (!m_os_ap) - LoadOperatingSystemPlugin(false); -} + ExecutionContext exe_ctx(this); + const char *plugin_name = nullptr; + const char *flavor = nullptr; + const bool prefer_file_cache = true; + disassembler_sp = Disassembler::DisassembleRange( + target.GetArchitecture(), plugin_name, flavor, exe_ctx, range_bounds, + prefer_file_cache); + if (disassembler_sp) + insn_list = &disassembler_sp->GetInstructionList(); + + if (insn_list == nullptr) { + return retval; + } -void -Process::PrintWarning (uint64_t warning_type, const void *repeat_key, const char *fmt, ...) -{ - bool print_warning = true; + size_t insn_offset = + insn_list->GetIndexOfInstructionAtAddress(default_stop_addr); + if (insn_offset == UINT32_MAX) { + return retval; + } - StreamSP stream_sp = GetTarget().GetDebugger().GetAsyncOutputStream(); - if (!stream_sp) - return; - if (warning_type == eWarningsOptimization - && !GetWarningsOptimization()) - { - return; - } + uint32_t branch_index = + insn_list->GetIndexOfNextBranchInstruction(insn_offset, target); + if (branch_index == UINT32_MAX) { + return retval; + } - if (repeat_key != nullptr) - { - WarningsCollection::iterator it = m_warnings_issued.find (warning_type); - if (it == m_warnings_issued.end()) - { - m_warnings_issued[warning_type] = WarningsPointerSet(); - m_warnings_issued[warning_type].insert (repeat_key); - } - else - { - if (it->second.find (repeat_key) != it->second.end()) - { - print_warning = false; - } - else - { - it->second.insert (repeat_key); - } - } + if (branch_index > insn_offset) { + Address next_branch_insn_address = + insn_list->GetInstructionAtIndex(branch_index)->GetAddress(); + if (next_branch_insn_address.IsValid() && + range_bounds.ContainsFileAddress(next_branch_insn_address)) { + retval = next_branch_insn_address; } + } - if (print_warning) - { - va_list args; - va_start (args, fmt); - stream_sp->PrintfVarArg (fmt, args); - va_end (args); - } + return retval; } -void -Process::PrintWarningOptimization (const SymbolContext &sc) -{ - if (GetWarningsOptimization() - && sc.module_sp - && !sc.module_sp->GetFileSpec().GetFilename().IsEmpty() - && sc.function - && sc.function->GetIsOptimized()) - { - PrintWarning (Process::Warnings::eWarningsOptimization, sc.module_sp.get(), "%s was compiled with optimization - stepping may behave oddly; variables may not be available.\n", sc.module_sp->GetFileSpec().GetFilename().GetCString()); - } -} +Error Process::GetMemoryRegions( + std::vector<lldb::MemoryRegionInfoSP> ®ion_list) { -bool -Process::GetProcessInfo(ProcessInstanceInfo &info) -{ - info.Clear(); + Error error; - PlatformSP platform_sp = GetTarget().GetPlatform(); - if (! platform_sp) - return false; + lldb::addr_t range_end = 0; - return platform_sp->GetProcessInfo(GetID(), info); -} - -ThreadCollectionSP -Process::GetHistoryThreads(lldb::addr_t addr) -{ - ThreadCollectionSP threads; - - const MemoryHistorySP &memory_history = MemoryHistory::FindPlugin(shared_from_this()); - - if (!memory_history) { - return threads; + region_list.clear(); + do { + lldb::MemoryRegionInfoSP region_info(new lldb_private::MemoryRegionInfo()); + error = GetMemoryRegionInfo(range_end, *region_info); + // GetMemoryRegionInfo should only return an error if it is unimplemented. + if (error.Fail()) { + region_list.clear(); + break; } - - threads.reset(new ThreadCollection(memory_history->GetHistoryThreads(addr))); - - return threads; -} -InstrumentationRuntimeSP -Process::GetInstrumentationRuntime(lldb::InstrumentationRuntimeType type) -{ - InstrumentationRuntimeCollection::iterator pos; - pos = m_instrumentation_runtimes.find (type); - if (pos == m_instrumentation_runtimes.end()) - { - return InstrumentationRuntimeSP(); + range_end = region_info->GetRange().GetRangeEnd(); + if (region_info->GetMapped() == MemoryRegionInfo::eYes) { + region_list.push_back(region_info); } - else - return (*pos).second; -} + } while (range_end != LLDB_INVALID_ADDRESS); -bool -Process::GetModuleSpec(const FileSpec& module_file_spec, - const ArchSpec& arch, - ModuleSpec& module_spec) -{ - module_spec.Clear(); - return false; + return error; } -size_t -Process::AddImageToken(lldb::addr_t image_ptr) -{ - m_image_tokens.push_back(image_ptr); - return m_image_tokens.size() - 1; -} - -lldb::addr_t -Process::GetImagePtrFromToken(size_t token) const -{ - if (token < m_image_tokens.size()) - return m_image_tokens[token]; - return LLDB_INVALID_IMAGE_TOKEN; -} - -void -Process::ResetImageToken(size_t token) -{ - if (token < m_image_tokens.size()) - m_image_tokens[token] = LLDB_INVALID_IMAGE_TOKEN; +Error Process::ConfigureStructuredData( + const ConstString &type_name, const StructuredData::ObjectSP &config_sp) { + // If you get this, the Process-derived class needs to implement a method + // to enable an already-reported asynchronous structured data feature. + // See ProcessGDBRemote for an example implementation over gdb-remote. + return Error("unimplemented"); } -Address -Process::AdvanceAddressToNextBranchInstruction (Address default_stop_addr, AddressRange range_bounds) -{ - Target &target = GetTarget(); - DisassemblerSP disassembler_sp; - InstructionList *insn_list = nullptr; - - Address retval = default_stop_addr; - - if (!target.GetUseFastStepping()) - return retval; - if (!default_stop_addr.IsValid()) - return retval; - - ExecutionContext exe_ctx (this); - const char *plugin_name = nullptr; - const char *flavor = nullptr; - const bool prefer_file_cache = true; - disassembler_sp = Disassembler::DisassembleRange(target.GetArchitecture(), - plugin_name, - flavor, - exe_ctx, - range_bounds, - prefer_file_cache); - if (disassembler_sp) - insn_list = &disassembler_sp->GetInstructionList(); - - if (insn_list == nullptr) - { - return retval; - } - - size_t insn_offset = insn_list->GetIndexOfInstructionAtAddress (default_stop_addr); - if (insn_offset == UINT32_MAX) - { - return retval; - } +void Process::MapSupportedStructuredDataPlugins( + const StructuredData::Array &supported_type_names) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); - uint32_t branch_index = insn_list->GetIndexOfNextBranchInstruction (insn_offset, target); - if (branch_index == UINT32_MAX) - { - return retval; - } + // Bail out early if there are no type names to map. + if (supported_type_names.GetSize() == 0) { + if (log) + log->Printf("Process::%s(): no structured data types supported", + __FUNCTION__); + return; + } + + // Convert StructuredData type names to ConstString instances. + std::set<ConstString> const_type_names; + + if (log) + log->Printf("Process::%s(): the process supports the following async " + "structured data types:", + __FUNCTION__); + + supported_type_names.ForEach( + [&const_type_names, &log](StructuredData::Object *object) { + if (!object) { + // Invalid - shouldn't be null objects in the array. + return false; + } - if (branch_index > insn_offset) - { - Address next_branch_insn_address = insn_list->GetInstructionAtIndex (branch_index)->GetAddress(); - if (next_branch_insn_address.IsValid() && range_bounds.ContainsFileAddress (next_branch_insn_address)) - { - retval = next_branch_insn_address; + auto type_name = object->GetAsString(); + if (!type_name) { + // Invalid format - all type names should be strings. + return false; } + + const_type_names.insert(ConstString(type_name->GetValue())); + if (log) + log->Printf("- %s", type_name->GetValue().c_str()); + return true; + }); + + // For each StructuredDataPlugin, if the plugin handles any of the + // types in the supported_type_names, map that type name to that plugin. + uint32_t plugin_index = 0; + for (auto create_instance = + PluginManager::GetStructuredDataPluginCreateCallbackAtIndex( + plugin_index); + create_instance && !const_type_names.empty(); ++plugin_index) { + // Create the plugin. + StructuredDataPluginSP plugin_sp = (*create_instance)(*this); + if (!plugin_sp) { + // This plugin doesn't think it can work with the process. + // Move on to the next. + continue; + } + + // For any of the remaining type names, map any that this plugin + // supports. + std::vector<ConstString> names_to_remove; + for (auto &type_name : const_type_names) { + if (plugin_sp->SupportsStructuredDataType(type_name)) { + m_structured_data_plugin_map.insert( + std::make_pair(type_name, plugin_sp)); + names_to_remove.push_back(type_name); + if (log) + log->Printf("Process::%s(): using plugin %s for type name " + "%s", + __FUNCTION__, plugin_sp->GetPluginName().GetCString(), + type_name.GetCString()); + } } - return retval; + // Remove the type names that were consumed by this plugin. + for (auto &type_name : names_to_remove) + const_type_names.erase(type_name); + } } -Error -Process::GetMemoryRegions (std::vector<lldb::MemoryRegionInfoSP>& region_list) -{ - - Error error; - - lldb::addr_t range_base = 0; - lldb::addr_t range_end = 0; +bool Process::RouteAsyncStructuredData( + const StructuredData::ObjectSP object_sp) { + // Nothing to do if there's no data. + if (!object_sp) + return false; - region_list.clear(); - do - { - lldb::MemoryRegionInfoSP region_info( new lldb_private::MemoryRegionInfo() ); - error = GetMemoryRegionInfo (range_end, *region_info); - // GetMemoryRegionInfo should only return an error if it is unimplemented. - if (error.Fail()) - { - region_list.clear(); - break; - } + // The contract is this must be a dictionary, so we can look up the + // routing key via the top-level 'type' string value within the dictionary. + StructuredData::Dictionary *dictionary = object_sp->GetAsDictionary(); + if (!dictionary) + return false; - range_base = region_info->GetRange().GetRangeBase(); - range_end = region_info->GetRange().GetRangeEnd(); - if( region_info->GetMapped() == MemoryRegionInfo::eYes ) - { - region_list.push_back(region_info); - } - } while (range_end != LLDB_INVALID_ADDRESS); + // Grab the async structured type name (i.e. the feature/plugin name). + ConstString type_name; + if (!dictionary->GetValueForKeyAsString("type", type_name)) + return false; - return error; + // Check if there's a plugin registered for this type name. + auto find_it = m_structured_data_plugin_map.find(type_name); + if (find_it == m_structured_data_plugin_map.end()) { + // We don't have a mapping for this structured data type. + return false; + } + // Route the structured data to the plugin. + find_it->second->HandleArrivalOfStructuredData(*this, type_name, object_sp); + return true; } |
