1//===-- HostProcessPosix.cpp ----------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include "lldb/Host/Host.h" 10#include "lldb/Host/FileSystem.h" 11#include "lldb/Host/posix/HostProcessPosix.h" 12 13#include "llvm/ADT/STLExtras.h" 14 15#include <climits> 16#include <csignal> 17#include <unistd.h> 18 19using namespace lldb_private; 20 21static const int kInvalidPosixProcess = 0; 22 23HostProcessPosix::HostProcessPosix() 24 : HostNativeProcessBase(kInvalidPosixProcess) {} 25 26HostProcessPosix::HostProcessPosix(lldb::process_t process) 27 : HostNativeProcessBase(process) {} 28 29HostProcessPosix::~HostProcessPosix() = default; 30 31Status HostProcessPosix::Signal(int signo) const { 32 if (m_process == kInvalidPosixProcess) { 33 Status error; 34 error.SetErrorString("HostProcessPosix refers to an invalid process"); 35 return error; 36 } 37 38 return HostProcessPosix::Signal(m_process, signo); 39} 40 41Status HostProcessPosix::Signal(lldb::process_t process, int signo) { 42 Status error; 43 44 if (-1 == ::kill(process, signo)) 45 error.SetErrorToErrno(); 46 47 return error; 48} 49 50Status HostProcessPosix::Terminate() { return Signal(SIGKILL); } 51 52lldb::pid_t HostProcessPosix::GetProcessId() const { return m_process; } 53 54bool HostProcessPosix::IsRunning() const { 55 if (m_process == kInvalidPosixProcess) 56 return false; 57 58 // Send this process the null signal. If it succeeds the process is running. 59 Status error = Signal(0); 60 return error.Success(); 61} 62 63llvm::Expected<HostThread> HostProcessPosix::StartMonitoring( 64 const Host::MonitorChildProcessCallback &callback) { 65 return Host::StartMonitoringChildProcess(callback, m_process); 66} 67