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 23 HostProcessPosix::HostProcessPosix() 24 : HostNativeProcessBase(kInvalidPosixProcess) {} 25 26 HostProcessPosix::HostProcessPosix(lldb::process_t process) 27 : HostNativeProcessBase(process) {} 28 29 HostProcessPosix::~HostProcessPosix() = default; 30 31 Status HostProcessPosix::Signal(int signo) const { 32 if (m_process == kInvalidPosixProcess) { 33 return Status::FromErrorString( 34 "HostProcessPosix refers to an invalid process"); 35 } 36 37 return HostProcessPosix::Signal(m_process, signo); 38 } 39 40 Status HostProcessPosix::Signal(lldb::process_t process, int signo) { 41 Status error; 42 43 if (-1 == ::kill(process, signo)) 44 return Status::FromErrno(); 45 46 return error; 47 } 48 49 Status HostProcessPosix::Terminate() { return Signal(SIGKILL); } 50 51 lldb::pid_t HostProcessPosix::GetProcessId() const { return m_process; } 52 53 bool HostProcessPosix::IsRunning() const { 54 if (m_process == kInvalidPosixProcess) 55 return false; 56 57 // Send this process the null signal. If it succeeds the process is running. 58 Status error = Signal(0); 59 return error.Success(); 60 } 61 62 llvm::Expected<HostThread> HostProcessPosix::StartMonitoring( 63 const Host::MonitorChildProcessCallback &callback) { 64 return Host::StartMonitoringChildProcess(callback, m_process); 65 } 66