73 lines · cpp
1//===-- MonitoringProcessLauncher.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-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/Host/MonitoringProcessLauncher.h"10#include "lldb/Host/FileSystem.h"11#include "lldb/Host/HostProcess.h"12#include "lldb/Host/ProcessLaunchInfo.h"13#include "lldb/Utility/LLDBLog.h"14#include "lldb/Utility/Log.h"15 16#include "llvm/Support/FileSystem.h"17 18using namespace lldb;19using namespace lldb_private;20 21MonitoringProcessLauncher::MonitoringProcessLauncher(22 std::unique_ptr<ProcessLauncher> delegate_launcher)23 : m_delegate_launcher(std::move(delegate_launcher)) {}24 25HostProcess26MonitoringProcessLauncher::LaunchProcess(const ProcessLaunchInfo &launch_info,27 Status &error) {28 ProcessLaunchInfo resolved_info(launch_info);29 30 error.Clear();31 32 FileSystem &fs = FileSystem::Instance();33 FileSpec exe_spec(resolved_info.GetExecutableFile());34 35 if (!fs.Exists(exe_spec))36 FileSystem::Instance().Resolve(exe_spec);37 38 if (!fs.Exists(exe_spec))39 FileSystem::Instance().ResolveExecutableLocation(exe_spec);40 41 if (!fs.Exists(exe_spec)) {42 error = Status::FromErrorStringWithFormatv(43 "executable doesn't exist: '{0}'", exe_spec);44 return HostProcess();45 }46 47 resolved_info.SetExecutableFile(exe_spec, false);48 assert(!resolved_info.GetFlags().Test(eLaunchFlagLaunchInTTY));49 50 HostProcess process =51 m_delegate_launcher->LaunchProcess(resolved_info, error);52 53 if (process.GetProcessId() != LLDB_INVALID_PROCESS_ID) {54 Log *log = GetLog(LLDBLog::Process);55 56 assert(launch_info.GetMonitorProcessCallback());57 llvm::Expected<HostThread> maybe_thread =58 process.StartMonitoring(launch_info.GetMonitorProcessCallback());59 if (!maybe_thread)60 error = Status::FromErrorStringWithFormatv(61 "failed to launch host thread: {}",62 llvm::toString(maybe_thread.takeError()));63 if (log)64 log->PutCString("started monitoring child process.");65 } else {66 // Invalid process ID, something didn't go well67 if (error.Success())68 error =69 Status::FromErrorString("process launch failed for unknown reasons");70 }71 return process;72}73