summaryrefslogtreecommitdiffstats
path: root/lib/System/Win32/Signals.inc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/System/Win32/Signals.inc')
-rw-r--r--lib/System/Win32/Signals.inc332
1 files changed, 0 insertions, 332 deletions
diff --git a/lib/System/Win32/Signals.inc b/lib/System/Win32/Signals.inc
deleted file mode 100644
index 2498a26e..0000000
--- a/lib/System/Win32/Signals.inc
+++ /dev/null
@@ -1,332 +0,0 @@
-//===- Win32/Signals.cpp - Win32 Signals Implementation ---------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file provides the Win32 specific implementation of the Signals class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Win32.h"
-#include <stdio.h>
-#include <vector>
-#include <algorithm>
-
-#ifdef __MINGW32__
- #include <imagehlp.h>
-#else
- #include <dbghelp.h>
-#endif
-#include <psapi.h>
-
-#ifdef __MINGW32__
- #if ((HAVE_LIBIMAGEHLP != 1) || (HAVE_LIBPSAPI != 1))
- #error "libimagehlp.a & libpsapi.a should be present"
- #endif
-#else
- #pragma comment(lib, "psapi.lib")
- #pragma comment(lib, "dbghelp.lib")
-#endif
-
-// Forward declare.
-static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep);
-static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType);
-
-// InterruptFunction - The function to call if ctrl-c is pressed.
-static void (*InterruptFunction)() = 0;
-
-static std::vector<llvm::sys::Path> *FilesToRemove = NULL;
-static std::vector<std::pair<void(*)(void*), void*> > *CallBacksToRun = 0;
-static bool RegisteredUnhandledExceptionFilter = false;
-static bool CleanupExecuted = false;
-#ifdef _MSC_VER
-static bool ExitOnUnhandledExceptions = false;
-#endif
-static PTOP_LEVEL_EXCEPTION_FILTER OldFilter = NULL;
-
-// Windows creates a new thread to execute the console handler when an event
-// (such as CTRL/C) occurs. This causes concurrency issues with the above
-// globals which this critical section addresses.
-static CRITICAL_SECTION CriticalSection;
-
-namespace llvm {
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only Win32 specific code
-//=== and must not be UNIX code
-//===----------------------------------------------------------------------===//
-
-#ifdef _MSC_VER
-/// CRTReportHook - Function called on a CRT debugging event.
-static int CRTReportHook(int ReportType, char *Message, int *Return) {
- // Don't cause a DebugBreak() on return.
- if (Return)
- *Return = 0;
-
- switch (ReportType) {
- default:
- case _CRT_ASSERT:
- fprintf(stderr, "CRT assert: %s\n", Message);
- // FIXME: Is there a way to just crash? Perhaps throw to the unhandled
- // exception code? Perhaps SetErrorMode() handles this.
- _exit(3);
- break;
- case _CRT_ERROR:
- fprintf(stderr, "CRT error: %s\n", Message);
- // FIXME: Is there a way to just crash? Perhaps throw to the unhandled
- // exception code? Perhaps SetErrorMode() handles this.
- _exit(3);
- break;
- case _CRT_WARN:
- fprintf(stderr, "CRT warn: %s\n", Message);
- break;
- }
-
- // Don't call _CrtDbgReport.
- return TRUE;
-}
-#endif
-
-static void RegisterHandler() {
- if (RegisteredUnhandledExceptionFilter) {
- EnterCriticalSection(&CriticalSection);
- return;
- }
-
- // Now's the time to create the critical section. This is the first time
- // through here, and there's only one thread.
- InitializeCriticalSection(&CriticalSection);
-
- // Enter it immediately. Now if someone hits CTRL/C, the console handler
- // can't proceed until the globals are updated.
- EnterCriticalSection(&CriticalSection);
-
- RegisteredUnhandledExceptionFilter = true;
- OldFilter = SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
- SetConsoleCtrlHandler(LLVMConsoleCtrlHandler, TRUE);
-
- // Environment variable to disable any kind of crash dialog.
-#ifdef _MSC_VER
- if (getenv("LLVM_DISABLE_CRT_DEBUG")) {
- _CrtSetReportHook(CRTReportHook);
- ExitOnUnhandledExceptions = true;
- }
-#endif
-
- // IMPORTANT NOTE: Caller must call LeaveCriticalSection(&CriticalSection) or
- // else multi-threading problems will ensue.
-}
-
-// RemoveFileOnSignal - The public API
-bool sys::RemoveFileOnSignal(const sys::Path &Filename, std::string* ErrMsg) {
- RegisterHandler();
-
- if (CleanupExecuted) {
- if (ErrMsg)
- *ErrMsg = "Process terminating -- cannot register for removal";
- return true;
- }
-
- if (FilesToRemove == NULL)
- FilesToRemove = new std::vector<sys::Path>;
-
- FilesToRemove->push_back(Filename);
-
- LeaveCriticalSection(&CriticalSection);
- return false;
-}
-
-// DontRemoveFileOnSignal - The public API
-void sys::DontRemoveFileOnSignal(const sys::Path &Filename) {
- if (FilesToRemove == NULL)
- return;
-
- FilesToRemove->push_back(Filename);
- std::vector<sys::Path>::reverse_iterator I =
- std::find(FilesToRemove->rbegin(), FilesToRemove->rend(), Filename);
- if (I != FilesToRemove->rend())
- FilesToRemove->erase(I.base()-1);
-
- LeaveCriticalSection(&CriticalSection);
-}
-
-/// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
-/// SIGSEGV) is delivered to the process, print a stack trace and then exit.
-void sys::PrintStackTraceOnErrorSignal() {
- RegisterHandler();
- LeaveCriticalSection(&CriticalSection);
-}
-
-
-void sys::SetInterruptFunction(void (*IF)()) {
- RegisterHandler();
- InterruptFunction = IF;
- LeaveCriticalSection(&CriticalSection);
-}
-
-
-/// AddSignalHandler - Add a function to be called when a signal is delivered
-/// to the process. The handler can have a cookie passed to it to identify
-/// what instance of the handler it is.
-void sys::AddSignalHandler(void (*FnPtr)(void *), void *Cookie) {
- if (CallBacksToRun == 0)
- CallBacksToRun = new std::vector<std::pair<void(*)(void*), void*> >();
- CallBacksToRun->push_back(std::make_pair(FnPtr, Cookie));
- RegisterHandler();
- LeaveCriticalSection(&CriticalSection);
-}
-}
-
-static void Cleanup() {
- EnterCriticalSection(&CriticalSection);
-
- // Prevent other thread from registering new files and directories for
- // removal, should we be executing because of the console handler callback.
- CleanupExecuted = true;
-
- // FIXME: open files cannot be deleted.
-
- if (FilesToRemove != NULL)
- while (!FilesToRemove->empty()) {
- FilesToRemove->back().eraseFromDisk();
- FilesToRemove->pop_back();
- }
-
- if (CallBacksToRun)
- for (unsigned i = 0, e = CallBacksToRun->size(); i != e; ++i)
- (*CallBacksToRun)[i].first((*CallBacksToRun)[i].second);
-
- LeaveCriticalSection(&CriticalSection);
-}
-
-void llvm::sys::RunInterruptHandlers() {
- Cleanup();
-}
-
-static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep) {
- try {
- Cleanup();
-
-#ifdef _WIN64
- // TODO: provide a x64 friendly version of the following
-#else
-
- // Initialize the STACKFRAME structure.
- STACKFRAME StackFrame;
- memset(&StackFrame, 0, sizeof(StackFrame));
-
- StackFrame.AddrPC.Offset = ep->ContextRecord->Eip;
- StackFrame.AddrPC.Mode = AddrModeFlat;
- StackFrame.AddrStack.Offset = ep->ContextRecord->Esp;
- StackFrame.AddrStack.Mode = AddrModeFlat;
- StackFrame.AddrFrame.Offset = ep->ContextRecord->Ebp;
- StackFrame.AddrFrame.Mode = AddrModeFlat;
-
- HANDLE hProcess = GetCurrentProcess();
- HANDLE hThread = GetCurrentThread();
-
- // Initialize the symbol handler.
- SymSetOptions(SYMOPT_DEFERRED_LOADS|SYMOPT_LOAD_LINES);
- SymInitialize(hProcess, NULL, TRUE);
-
- while (true) {
- if (!StackWalk(IMAGE_FILE_MACHINE_I386, hProcess, hThread, &StackFrame,
- ep->ContextRecord, NULL, SymFunctionTableAccess,
- SymGetModuleBase, NULL)) {
- break;
- }
-
- if (StackFrame.AddrFrame.Offset == 0)
- break;
-
- // Print the PC in hexadecimal.
- DWORD PC = StackFrame.AddrPC.Offset;
- fprintf(stderr, "%08lX", PC);
-
- // Print the parameters. Assume there are four.
- fprintf(stderr, " (0x%08lX 0x%08lX 0x%08lX 0x%08lX)", StackFrame.Params[0],
- StackFrame.Params[1], StackFrame.Params[2], StackFrame.Params[3]);
-
- // Verify the PC belongs to a module in this process.
- if (!SymGetModuleBase(hProcess, PC)) {
- fputs(" <unknown module>\n", stderr);
- continue;
- }
-
- // Print the symbol name.
- char buffer[512];
- IMAGEHLP_SYMBOL *symbol = reinterpret_cast<IMAGEHLP_SYMBOL *>(buffer);
- memset(symbol, 0, sizeof(IMAGEHLP_SYMBOL));
- symbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
- symbol->MaxNameLength = 512 - sizeof(IMAGEHLP_SYMBOL);
-
- DWORD dwDisp;
- if (!SymGetSymFromAddr(hProcess, PC, &dwDisp, symbol)) {
- fputc('\n', stderr);
- continue;
- }
-
- buffer[511] = 0;
- if (dwDisp > 0)
- fprintf(stderr, ", %s()+%04lu bytes(s)", symbol->Name, dwDisp);
- else
- fprintf(stderr, ", %s", symbol->Name);
-
- // Print the source file and line number information.
- IMAGEHLP_LINE line;
- memset(&line, 0, sizeof(line));
- line.SizeOfStruct = sizeof(line);
- if (SymGetLineFromAddr(hProcess, PC, &dwDisp, &line)) {
- fprintf(stderr, ", %s, line %lu", line.FileName, line.LineNumber);
- if (dwDisp > 0)
- fprintf(stderr, "+%04lu byte(s)", dwDisp);
- }
-
- fputc('\n', stderr);
- }
-
-#endif
-
- } catch (...) {
- assert(0 && "Crashed in LLVMUnhandledExceptionFilter");
- }
-
-#ifdef _MSC_VER
- if (ExitOnUnhandledExceptions)
- _exit(-3);
-#endif
-
- // Allow dialog box to pop up allowing choice to start debugger.
- if (OldFilter)
- return (*OldFilter)(ep);
- else
- return EXCEPTION_CONTINUE_SEARCH;
-}
-
-static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType) {
- // We are running in our very own thread, courtesy of Windows.
- EnterCriticalSection(&CriticalSection);
- Cleanup();
-
- // If an interrupt function has been set, go and run one it; otherwise,
- // the process dies.
- void (*IF)() = InterruptFunction;
- InterruptFunction = 0; // Don't run it on another CTRL-C.
-
- if (IF) {
- // Note: if the interrupt function throws an exception, there is nothing
- // to catch it in this thread so it will kill the process.
- IF(); // Run it now.
- LeaveCriticalSection(&CriticalSection);
- return TRUE; // Don't kill the process.
- }
-
- // Allow normal processing to take place; i.e., the process dies.
- LeaveCriticalSection(&CriticalSection);
- return FALSE;
-}
-
OpenPOWER on IntegriCloud