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

short
Host::GetPosixspawnFlags (ProcessLaunchInfo &launch_info)
{
#ifndef __ANDROID__
    short flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;

#if defined (__APPLE__)
    if (launch_info.GetFlags().Test (eLaunchFlagExec))
        flags |= POSIX_SPAWN_SETEXEC;           // Darwin specific posix_spawn flag
    
    if (launch_info.GetFlags().Test (eLaunchFlagDebug))
        flags |= POSIX_SPAWN_START_SUSPENDED;   // Darwin specific posix_spawn flag
    
    if (launch_info.GetFlags().Test (eLaunchFlagDisableASLR))
        flags |= _POSIX_SPAWN_DISABLE_ASLR;     // Darwin specific posix_spawn flag
        
    if (launch_info.GetLaunchInSeparateProcessGroup())
        flags |= POSIX_SPAWN_SETPGROUP;
    
#ifdef POSIX_SPAWN_CLOEXEC_DEFAULT
#if defined (__APPLE__) && (defined (__x86_64__) || defined (__i386__))
    static LazyBool g_use_close_on_exec_flag = eLazyBoolCalculate;
    if (g_use_close_on_exec_flag == eLazyBoolCalculate)
    {
        g_use_close_on_exec_flag = eLazyBoolNo;
        
        uint32_t major, minor, update;
        if (HostInfo::GetOSVersion(major, minor, update))
        {
            // Kernel panic if we use the POSIX_SPAWN_CLOEXEC_DEFAULT on 10.7 or earlier
            if (major > 10 || (major == 10 && minor > 7))
            {
                // Only enable for 10.8 and later OS versions
                g_use_close_on_exec_flag = eLazyBoolYes;
            }
        }
    }
#else
    static LazyBool g_use_close_on_exec_flag = eLazyBoolYes;
#endif
    // Close all files exception those with file actions if this is supported.
    if (g_use_close_on_exec_flag == eLazyBoolYes)
        flags |= POSIX_SPAWN_CLOEXEC_DEFAULT;
#endif
#endif // #if defined (__APPLE__)
    return flags;
#else
    assert(false *&& "Host::GetPosixspawnFlags() not supported on Android");
    return 0;
#endif
}

Error
GDBRemoteCommunication::StartDebugserverProcess (const char *hostname,
                                                 uint16_t in_port,
                                                 ProcessLaunchInfo &launch_info,
                                                 uint16_t &out_port)
{
    Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
    if (log)
        log->Printf ("GDBRemoteCommunication::%s(hostname=%s, in_port=%" PRIu16 ", out_port=%" PRIu16, __FUNCTION__, hostname ? hostname : "<empty>", in_port, out_port);

    out_port = in_port;
    Error error;
    // If we locate debugserver, keep that located version around
    static FileSpec g_debugserver_file_spec;
    
    char debugserver_path[PATH_MAX];
    FileSpec &debugserver_file_spec = launch_info.GetExecutableFile();
    
    // Always check to see if we have an environment override for the path
    // to the debugserver to use and use it if we do.
    const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH");
    if (env_debugserver_path)
    {
        debugserver_file_spec.SetFile (env_debugserver_path, false);
        if (log)
            log->Printf ("GDBRemoteCommunication::%s() gdb-remote stub exe path set from environment variable: %s", __FUNCTION__, env_debugserver_path);
    }
    else
        debugserver_file_spec = g_debugserver_file_spec;
    bool debugserver_exists = debugserver_file_spec.Exists();
    if (!debugserver_exists)
    {
        // The debugserver binary is in the LLDB.framework/Resources
        // directory.
        if (HostInfo::GetLLDBPath(ePathTypeSupportExecutableDir, debugserver_file_spec))
        {
            debugserver_file_spec.AppendPathComponent (DEBUGSERVER_BASENAME);
            debugserver_exists = debugserver_file_spec.Exists();
            if (debugserver_exists)
            {
                if (log)
                    log->Printf ("GDBRemoteCommunication::%s() found gdb-remote stub exe '%s'", __FUNCTION__, debugserver_file_spec.GetPath ().c_str ());

                g_debugserver_file_spec = debugserver_file_spec;
            }
            else
            {
                if (log)
                    log->Printf ("GDBRemoteCommunication::%s() could not find gdb-remote stub exe '%s'", __FUNCTION__, debugserver_file_spec.GetPath ().c_str ());

                g_debugserver_file_spec.Clear();
                debugserver_file_spec.Clear();
            }
        }
    }
    
    if (debugserver_exists)
    {
        debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path));

        Args &debugserver_args = launch_info.GetArguments();
        debugserver_args.Clear();
        char arg_cstr[PATH_MAX];

        // Start args with "debugserver /file/path -r --"
        debugserver_args.AppendArgument(debugserver_path);

#if !defined(__APPLE__)
        // First argument to lldb-server must be mode in which to run.
        debugserver_args.AppendArgument("gdbserver");
#endif

        // If a host and port is supplied then use it
        char host_and_port[128];
        if (hostname)
        {
            snprintf (host_and_port, sizeof(host_and_port), "%s:%u", hostname, in_port);
            debugserver_args.AppendArgument(host_and_port);
        }
        else
        {
            host_and_port[0] = '\0';
        }

        // use native registers, not the GDB registers
        debugserver_args.AppendArgument("--native-regs");

        if (launch_info.GetLaunchInSeparateProcessGroup())
        {
            debugserver_args.AppendArgument("--setsid");
        }

        llvm::SmallString<PATH_MAX> named_pipe_path;
        Pipe port_pipe;

        bool listen = false;
        if (host_and_port[0])
        {
            // Create a temporary file to get the stdout/stderr and redirect the
            // output of the command into this file. We will later read this file
//.........这里部分代码省略.........