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//===-- HostProcessPosix.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/Host.h"
#include "lldb/Host/posix/HostProcessPosix.h"
#include "lldb/Host/FileSystem.h"
#include "llvm/ADT/STLExtras.h"
#include <limits.h>
using namespace lldb_private;
namespace
{
const int kInvalidPosixProcess = 0;
}
HostProcessPosix::HostProcessPosix()
: HostNativeProcessBase(kInvalidPosixProcess)
{
}
HostProcessPosix::HostProcessPosix(lldb::process_t process)
: HostNativeProcessBase(process)
{
}
HostProcessPosix::~HostProcessPosix()
{
}
Error HostProcessPosix::Signal(int signo) const
{
if (m_process == kInvalidPosixProcess)
{
Error error;
error.SetErrorString("HostProcessPosix refers to an invalid process");
return error;
}
return HostProcessPosix::Signal(m_process, signo);
}
Error HostProcessPosix::Signal(lldb::process_t process, int signo)
{
Error error;
if (-1 == ::kill(process, signo))
error.SetErrorToErrno();
return error;
}
Error HostProcessPosix::Terminate()
{
return Signal(SIGKILL);
}
Error HostProcessPosix::GetMainModule(FileSpec &file_spec) const
{
Error error;
// Use special code here because proc/[pid]/exe is a symbolic link.
char link_path[PATH_MAX];
char exe_path[PATH_MAX] = "";
if (snprintf (link_path, PATH_MAX, "/proc/%" PRIu64 "/exe", m_process) <= 0)
{
error.SetErrorString("Unable to build /proc/<pid>/exe string");
return error;
}
error = FileSystem::Readlink(link_path, exe_path, llvm::array_lengthof(exe_path));
if (!error.Success())
return error;
const ssize_t len = strlen(exe_path);
// If the binary has been deleted, the link name has " (deleted)" appended.
// Remove if there.
static const ssize_t deleted_len = strlen(" (deleted)");
if (len > deleted_len &&
!strcmp(exe_path + len - deleted_len, " (deleted)"))
{
exe_path[len - deleted_len] = 0;
}
file_spec.SetFile(exe_path, false);
return error;
}
lldb::pid_t HostProcessPosix::GetProcessId() const
{
return m_process;
}
bool HostProcessPosix::IsRunning() const
{
if (m_process == kInvalidPosixProcess)
return false;
// Send this process the null signal. If it succeeds the process is running.
Error error = Signal(0);
return error.Success();
}
HostThread
HostProcessPosix::StartMonitoring(HostProcess::MonitorCallback callback, void *callback_baton, bool monitor_signals)
{
return Host::StartMonitoringChildProcess(callback, callback_baton, m_process, monitor_signals);
}
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