C++ ProcessLaunchInfo::SetProcessID方法代码示例

Error
PlatformRemoteGDBServer::LaunchProcess (ProcessLaunchInfo &launch_info)
{
    Error error;
    lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
    
    m_gdb_client.SetSTDIN ("/dev/null");
    m_gdb_client.SetSTDOUT ("/dev/null");
    m_gdb_client.SetSTDERR ("/dev/null");
    m_gdb_client.SetDisableASLR (launch_info.GetFlags().Test (eLaunchFlagDisableASLR));
    m_gdb_client.SetDetachOnError (launch_info.GetFlags().Test (eLaunchFlagDetachOnError));
    
    const char *working_dir = launch_info.GetWorkingDirectory();
    if (working_dir && working_dir[0])
    {
        m_gdb_client.SetWorkingDir (working_dir);
    }
    
    // Send the environment and the program + arguments after we connect
    const char **envp = launch_info.GetEnvironmentEntries().GetConstArgumentVector();

    if (envp)
    {
        const char *env_entry;
        for (int i=0; (env_entry = envp[i]); ++i)
        {
            if (m_gdb_client.SendEnvironmentPacket(env_entry) != 0)
                break;
        }
    }
    
    ArchSpec arch_spec = launch_info.GetArchitecture();
    const char *arch_triple = arch_spec.GetTriple().str().c_str();
    
    m_gdb_client.SendLaunchArchPacket(arch_triple);
    
    const uint32_t old_packet_timeout = m_gdb_client.SetPacketTimeout (5);
    int arg_packet_err = m_gdb_client.SendArgumentsPacket (launch_info);
    m_gdb_client.SetPacketTimeout (old_packet_timeout);
    if (arg_packet_err == 0)
    {
        std::string error_str;
        if (m_gdb_client.GetLaunchSuccess (error_str))
        {
            pid = m_gdb_client.GetCurrentProcessID ();
            if (pid != LLDB_INVALID_PROCESS_ID)
                launch_info.SetProcessID (pid);
        }
        else
        {
            error.SetErrorString (error_str.c_str());
        }
    }
    else
    {
        error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err);
    }
    return error;
}

Error
ProcessWindows::DoLaunch(Module *exe_module,
                         ProcessLaunchInfo &launch_info)
{
    // Even though m_session_data is accessed here, it is before a debugger thread has been
    // kicked off.  So there's no race conditions, and it shouldn't be necessary to acquire
    // the mutex.

    Error result;
    if (!launch_info.GetFlags().Test(eLaunchFlagDebug))
    {
        StreamString stream;
        stream.Printf("ProcessWindows unable to launch '%s'.  ProcessWindows can only be used for debug launches.",
                      launch_info.GetExecutableFile().GetPath().c_str());
        std::string message = stream.GetString();
        result.SetErrorString(message.c_str());

        WINERR_IFALL(WINDOWS_LOG_PROCESS, message.c_str());
        return result;
    }

    bool stop_at_entry = launch_info.GetFlags().Test(eLaunchFlagStopAtEntry);
    m_session_data.reset(new ProcessWindowsData(stop_at_entry));

    SetPrivateState(eStateLaunching);
    DebugDelegateSP delegate(new LocalDebugDelegate(shared_from_this()));
    m_session_data->m_debugger.reset(new DebuggerThread(delegate));
    DebuggerThreadSP debugger = m_session_data->m_debugger;

    // Kick off the DebugLaunch asynchronously and wait for it to complete.
    result = debugger->DebugLaunch(launch_info);
    if (result.Fail())
    {
        WINERR_IFALL(WINDOWS_LOG_PROCESS, "DoLaunch failed launching '%s'.  %s",
                     launch_info.GetExecutableFile().GetPath().c_str(), result.AsCString());
        return result;
    }

    HostProcess process;
    Error error = WaitForDebuggerConnection(debugger, process);
    if (error.Fail())
    {
        WINERR_IFALL(WINDOWS_LOG_PROCESS, "DoLaunch failed launching '%s'.  %s",
                     launch_info.GetExecutableFile().GetPath().c_str(), error.AsCString());
        return error;
    }

    WINLOG_IFALL(WINDOWS_LOG_PROCESS, "DoLaunch successfully launched '%s'",
                 launch_info.GetExecutableFile().GetPath().c_str());

    // We've hit the initial stop.  If eLaunchFlagsStopAtEntry was specified, the private state
    // should already be set to eStateStopped as a result of hitting the initial breakpoint.  If
    // it was not set, the breakpoint should have already been resumed from and the private state
    // should already be eStateRunning.
    launch_info.SetProcessID(process.GetProcessId());
    SetID(process.GetProcessId());

    return result;
}

Error
ProcessWindows::DoLaunch(Module *exe_module,
                         ProcessLaunchInfo &launch_info)
{
    // Even though m_session_data is accessed here, it is before a debugger thread has been
    // kicked off.  So there's no race conditions, and it shouldn't be necessary to acquire
    // the mutex.

    Error result;
    if (!launch_info.GetFlags().Test(eLaunchFlagDebug))
    {
        result.SetErrorString("ProcessWindows can only be used to launch processes for debugging.");
        return result;
    }

    m_session_data.reset(new ProcessWindowsData(launch_info));

    SetPrivateState(eStateLaunching);
    DebugDelegateSP delegate(new LocalDebugDelegate(shared_from_this()));
    m_session_data->m_debugger.reset(new DebuggerThread(delegate));
    DebuggerThreadSP debugger = m_session_data->m_debugger;

    // Kick off the DebugLaunch asynchronously and wait for it to complete.
    result = debugger->DebugLaunch(launch_info);

    HostProcess process;
    if (result.Success())
    {
        // Block this function until we receive the initial stop from the process.
        if (::WaitForSingleObject(m_session_data->m_initial_stop_event, INFINITE) == WAIT_OBJECT_0)
        {
            process = debugger->GetProcess();
            if (m_session_data->m_launch_error.Fail())
                result = m_session_data->m_launch_error;
        }
        else
            result.SetError(::GetLastError(), eErrorTypeWin32);
    }

    if (!result.Success())
        return result;

    // We've hit the initial stop.  The private state should already be set to stopped as a result
    // of encountering the breakpoint exception in ProcessWindows::OnDebugException.
    launch_info.SetProcessID(process.GetProcessId());
    SetID(process.GetProcessId());

    return result;
}

Error Host::LaunchProcess(ProcessLaunchInfo &launch_info) {
  std::unique_ptr<ProcessLauncher> delegate_launcher;
#if defined(_WIN32)
  delegate_launcher.reset(new ProcessLauncherWindows());
#elif defined(__linux__)
  delegate_launcher.reset(new ProcessLauncherLinux());
#else
  delegate_launcher.reset(new ProcessLauncherPosix());
#endif
  MonitoringProcessLauncher launcher(std::move(delegate_launcher));

  Error error;
  HostProcess process = launcher.LaunchProcess(launch_info, error);

  // TODO(zturner): It would be better if the entire HostProcess were returned
  // instead of writing
  // it into this structure.
  launch_info.SetProcessID(process.GetProcessId());

  return error;
}

Error
PlatformRemoteGDBServer::LaunchProcess (ProcessLaunchInfo &launch_info)
{
    Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM));
    Error error;

    if (log)
        log->Printf ("PlatformRemoteGDBServer::%s() called", __FUNCTION__);

    auto num_file_actions = launch_info.GetNumFileActions ();
    for (decltype(num_file_actions) i = 0; i < num_file_actions; ++i)
    {
        const auto file_action = launch_info.GetFileActionAtIndex (i);
        if (file_action->GetAction () != FileAction::eFileActionOpen)
            continue;
        switch(file_action->GetFD())
        {
        case STDIN_FILENO:
            m_gdb_client.SetSTDIN(file_action->GetFileSpec());
            break;
        case STDOUT_FILENO:
            m_gdb_client.SetSTDOUT(file_action->GetFileSpec());
            break;
        case STDERR_FILENO:
            m_gdb_client.SetSTDERR(file_action->GetFileSpec());
            break;
        }
    }

    m_gdb_client.SetDisableASLR (launch_info.GetFlags().Test (eLaunchFlagDisableASLR));
    m_gdb_client.SetDetachOnError (launch_info.GetFlags().Test (eLaunchFlagDetachOnError));
    
    FileSpec working_dir = launch_info.GetWorkingDirectory();
    if (working_dir)
    {
        m_gdb_client.SetWorkingDir(working_dir);
    }
    
    // Send the environment and the program + arguments after we connect
    const char **envp = launch_info.GetEnvironmentEntries().GetConstArgumentVector();

    if (envp)
    {
        const char *env_entry;
        for (int i=0; (env_entry = envp[i]); ++i)
        {
            if (m_gdb_client.SendEnvironmentPacket(env_entry) != 0)
                break;
        }
    }
    
    ArchSpec arch_spec = launch_info.GetArchitecture();
    const char *arch_triple = arch_spec.GetTriple().str().c_str();
    
    m_gdb_client.SendLaunchArchPacket(arch_triple);
    if (log)
        log->Printf ("PlatformRemoteGDBServer::%s() set launch architecture triple to '%s'", __FUNCTION__, arch_triple ? arch_triple : "<NULL>");

    int arg_packet_err;
    {
        // Scope for the scoped timeout object
        process_gdb_remote::GDBRemoteCommunication::ScopedTimeout timeout(m_gdb_client, 5);
        arg_packet_err = m_gdb_client.SendArgumentsPacket (launch_info);
    }

    if (arg_packet_err == 0)
    {
        std::string error_str;
        if (m_gdb_client.GetLaunchSuccess (error_str))
        {
            const auto pid = m_gdb_client.GetCurrentProcessID (false);
            if (pid != LLDB_INVALID_PROCESS_ID)
            {
                launch_info.SetProcessID (pid);
                if (log)
                    log->Printf ("PlatformRemoteGDBServer::%s() pid %" PRIu64 " launched successfully", __FUNCTION__, pid);
            }
            else
            {
                if (log)
                    log->Printf ("PlatformRemoteGDBServer::%s() launch succeeded but we didn't get a valid process id back!", __FUNCTION__);
                error.SetErrorString ("failed to get PID");
            }
        }
        else
        {
            error.SetErrorString (error_str.c_str());
            if (log)
                log->Printf ("PlatformRemoteGDBServer::%s() launch failed: %s", __FUNCTION__, error.AsCString ());
        }
    }
    else
    {
        error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err);
    }
    return error;
}

Error
Host::LaunchProcess (ProcessLaunchInfo &launch_info)
{
    Error error;
    char exe_path[PATH_MAX];

    PlatformSP host_platform_sp (Platform::GetHostPlatform ());

    const ArchSpec &arch_spec = launch_info.GetArchitecture();

    FileSpec exe_spec(launch_info.GetExecutableFile());

    FileSpec::FileType file_type = exe_spec.GetFileType();
    if (file_type != FileSpec::eFileTypeRegular)
    {
        lldb::ModuleSP exe_module_sp;
        error = host_platform_sp->ResolveExecutable (exe_spec,
                                                     arch_spec,
                                                     exe_module_sp,
                                                     NULL);

        if (error.Fail())
            return error;

        if (exe_module_sp)
            exe_spec = exe_module_sp->GetFileSpec();
    }

    if (exe_spec.Exists())
    {
        exe_spec.GetPath (exe_path, sizeof(exe_path));
    }
    else
    {
        launch_info.GetExecutableFile().GetPath (exe_path, sizeof(exe_path));
        error.SetErrorStringWithFormat ("executable doesn't exist: '%s'", exe_path);
        return error;
    }

    assert(!launch_info.GetFlags().Test (eLaunchFlagLaunchInTTY));

    ::pid_t pid = LLDB_INVALID_PROCESS_ID;

    error = LaunchProcessPosixSpawn(exe_path, launch_info, pid);

    if (pid != LLDB_INVALID_PROCESS_ID)
    {
        // If all went well, then set the process ID into the launch info
        launch_info.SetProcessID(pid);

        Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS));

        // Make sure we reap any processes we spawn or we will have zombies.
        if (!launch_info.MonitorProcess())
        {
            const bool monitor_signals = false;
            StartMonitoringChildProcess (Process::SetProcessExitStatus,
                                         NULL,
                                         pid,
                                         monitor_signals);
            if (log)
                log->PutCString ("monitored child process with default Process::SetProcessExitStatus.");
        }
        else
        {
            if (log)
                log->PutCString ("monitored child process with user-specified process monitor.");
        }
    }
    else
    {
        // Invalid process ID, something didn't go well
        if (error.Success())
            error.SetErrorString ("process launch failed for unknown reasons");
    }
    return error;
}

Error
PlatformRemoteGDBServer::LaunchProcess (ProcessLaunchInfo &launch_info)
{
    Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM));
    Error error;
    lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;

    if (log)
        log->Printf ("PlatformRemoteGDBServer::%s() called", __FUNCTION__);

    m_gdb_client.SetSTDIN ("/dev/null");
    m_gdb_client.SetSTDOUT ("/dev/null");
    m_gdb_client.SetSTDERR ("/dev/null");
    m_gdb_client.SetDisableASLR (launch_info.GetFlags().Test (eLaunchFlagDisableASLR));
    m_gdb_client.SetDetachOnError (launch_info.GetFlags().Test (eLaunchFlagDetachOnError));
    
    const char *working_dir = launch_info.GetWorkingDirectory();
    if (working_dir && working_dir[0])
    {
        m_gdb_client.SetWorkingDir (working_dir);
    }
    
    // Send the environment and the program + arguments after we connect
    const char **envp = launch_info.GetEnvironmentEntries().GetConstArgumentVector();

    if (envp)
    {
        const char *env_entry;
        for (int i=0; (env_entry = envp[i]); ++i)
        {
            if (m_gdb_client.SendEnvironmentPacket(env_entry) != 0)
                break;
        }
    }
    
    ArchSpec arch_spec = launch_info.GetArchitecture();
    const char *arch_triple = arch_spec.GetTriple().str().c_str();
    
    m_gdb_client.SendLaunchArchPacket(arch_triple);
    if (log)
        log->Printf ("PlatformRemoteGDBServer::%s() set launch architecture triple to '%s'", __FUNCTION__, arch_triple ? arch_triple : "<NULL>");

    const uint32_t old_packet_timeout = m_gdb_client.SetPacketTimeout (5);
    int arg_packet_err = m_gdb_client.SendArgumentsPacket (launch_info);
    m_gdb_client.SetPacketTimeout (old_packet_timeout);
    if (arg_packet_err == 0)
    {
        std::string error_str;
        if (m_gdb_client.GetLaunchSuccess (error_str))
        {
            pid = m_gdb_client.GetCurrentProcessID ();
            if (pid != LLDB_INVALID_PROCESS_ID)
            {
                launch_info.SetProcessID (pid);
                if (log)
                    log->Printf ("PlatformRemoteGDBServer::%s() pid %" PRIu64 " launched successfully", __FUNCTION__, pid);
            }
            else
            {
                if (log)
                    log->Printf ("PlatformRemoteGDBServer::%s() launch succeeded but we didn't get a valid process id back!", __FUNCTION__);
                // FIXME isn't this an error condition? Do we need to set an error here?  Check with Greg.
            }
        }
        else
        {
            error.SetErrorString (error_str.c_str());
            if (log)
                log->Printf ("PlatformRemoteGDBServer::%s() launch failed: %s", __FUNCTION__, error.AsCString ());
        }
    }
    else
    {
        error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err);
    }
    return error;
}