1 //===-- MonitoringProcessLauncher.cpp ---------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Host/MonitoringProcessLauncher.h" 11 #include "lldb/Core/Module.h" 12 #include "lldb/Core/ModuleSpec.h" 13 #include "lldb/Host/HostProcess.h" 14 #include "lldb/Target/Platform.h" 15 #include "lldb/Target/Process.h" 16 #include "lldb/Target/ProcessLaunchInfo.h" 17 #include "lldb/Utility/Error.h" 18 #include "lldb/Utility/Log.h" 19 20 using namespace lldb; 21 using namespace lldb_private; 22 23 MonitoringProcessLauncher::MonitoringProcessLauncher( 24 std::unique_ptr<ProcessLauncher> delegate_launcher) 25 : m_delegate_launcher(std::move(delegate_launcher)) {} 26 27 HostProcess 28 MonitoringProcessLauncher::LaunchProcess(const ProcessLaunchInfo &launch_info, 29 Error &error) { 30 ProcessLaunchInfo resolved_info(launch_info); 31 32 error.Clear(); 33 char exe_path[PATH_MAX]; 34 35 PlatformSP host_platform_sp(Platform::GetHostPlatform()); 36 37 const ArchSpec &arch_spec = resolved_info.GetArchitecture(); 38 39 FileSpec exe_spec(resolved_info.GetExecutableFile()); 40 41 FileSpec::FileType file_type = exe_spec.GetFileType(); 42 if (file_type != FileSpec::eFileTypeRegular) { 43 ModuleSpec module_spec(exe_spec, arch_spec); 44 lldb::ModuleSP exe_module_sp; 45 error = 46 host_platform_sp->ResolveExecutable(module_spec, exe_module_sp, NULL); 47 48 if (error.Fail()) 49 return HostProcess(); 50 51 if (exe_module_sp) 52 exe_spec = exe_module_sp->GetFileSpec(); 53 } 54 55 if (exe_spec.Exists()) { 56 exe_spec.GetPath(exe_path, sizeof(exe_path)); 57 } else { 58 resolved_info.GetExecutableFile().GetPath(exe_path, sizeof(exe_path)); 59 error.SetErrorStringWithFormat("executable doesn't exist: '%s'", exe_path); 60 return HostProcess(); 61 } 62 63 resolved_info.SetExecutableFile(exe_spec, false); 64 assert(!resolved_info.GetFlags().Test(eLaunchFlagLaunchInTTY)); 65 66 HostProcess process = 67 m_delegate_launcher->LaunchProcess(resolved_info, error); 68 69 if (process.GetProcessId() != LLDB_INVALID_PROCESS_ID) { 70 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS)); 71 72 Host::MonitorChildProcessCallback callback = 73 launch_info.GetMonitorProcessCallback(); 74 75 bool monitor_signals = false; 76 if (callback) { 77 // If the ProcessLaunchInfo specified a callback, use that. 78 monitor_signals = launch_info.GetMonitorSignals(); 79 } else { 80 callback = Process::SetProcessExitStatus; 81 } 82 83 process.StartMonitoring(callback, monitor_signals); 84 if (log) 85 log->PutCString("started monitoring child process."); 86 } else { 87 // Invalid process ID, something didn't go well 88 if (error.Success()) 89 error.SetErrorString("process launch failed for unknown reasons"); 90 } 91 return process; 92 } 93