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 19 using namespace lldb_private; 20 21 static const int kInvalidPosixProcess = 0; 22 HostProcessPosix()23HostProcessPosix::HostProcessPosix() 24 : HostNativeProcessBase(kInvalidPosixProcess) {} 25 HostProcessPosix(lldb::process_t process)26HostProcessPosix::HostProcessPosix(lldb::process_t process) 27 : HostNativeProcessBase(process) {} 28 29 HostProcessPosix::~HostProcessPosix() = default; 30 Signal(int signo) const31Status 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 Signal(lldb::process_t process,int signo)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 Terminate()50Status HostProcessPosix::Terminate() { return Signal(SIGKILL); } 51 GetProcessId() const52lldb::pid_t HostProcessPosix::GetProcessId() const { return m_process; } 53 IsRunning() const54bool 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 StartMonitoring(const Host::MonitorChildProcessCallback & callback)63llvm::Expected<HostThread> HostProcessPosix::StartMonitoring( 64 const Host::MonitorChildProcessCallback &callback) { 65 return Host::StartMonitoringChildProcess(callback, m_process); 66 } 67