| 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 | str: "HostProcessPosix refers to an invalid process"); |
| 35 | } |
| 36 | |
| 37 | return HostProcessPosix::Signal(process: m_process, signo); |
| 38 | } |
| 39 | |
| 40 | Status HostProcessPosix::Signal(lldb::process_t process, int signo) { |
| 41 | Status error; |
| 42 | |
| 43 | if (-1 == ::kill(pid: process, sig: 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(signo: 0); |
| 59 | return error.Success(); |
| 60 | } |
| 61 | |
| 62 | llvm::Expected<HostThread> HostProcessPosix::StartMonitoring( |
| 63 | const Host::MonitorChildProcessCallback &callback) { |
| 64 | return Host::StartMonitoringChildProcess(callback, pid: m_process); |
| 65 | } |
| 66 |