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