C++ ProcessLaunchInfo::GetArchitecture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
PlatformLinux::LaunchNativeProcess (
    ProcessLaunchInfo &launch_info,
    lldb_private::NativeProcessProtocol::NativeDelegate &native_delegate,
    NativeProcessProtocolSP &process_sp)
{
#if !defined(__linux__)
    return Error("only implemented on Linux hosts");
#else
    if (!IsHost ())
        return Error("PlatformLinux::%s (): cannot launch a debug process when not the host", __FUNCTION__);

    // Retrieve the exe module.
    lldb::ModuleSP exe_module_sp;

    Error error = ResolveExecutable (
        launch_info.GetExecutableFile (),
        launch_info.GetArchitecture (),
        exe_module_sp,
        NULL);

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

    if (!exe_module_sp)
        return Error("exe_module_sp could not be resolved for %s", launch_info.GetExecutableFile ().GetPath ().c_str ());

    // Launch it for debugging
    error = NativeProcessLinux::LaunchProcess (
        exe_module_sp.get (),
        launch_info,
        native_delegate,
        process_sp);

    return error;
#endif
}

Error
Host::LaunchProcessPosixSpawn(const char *exe_path, const ProcessLaunchInfo &launch_info, lldb::pid_t &pid)
{
    Error error;
    Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_HOST | LIBLLDB_LOG_PROCESS));

    posix_spawnattr_t attr;
    error.SetError( ::posix_spawnattr_init (&attr), eErrorTypePOSIX);

    if (error.Fail() || log)
        error.PutToLog(log, "::posix_spawnattr_init ( &attr )");
    if (error.Fail())
        return error;

    // Make a quick class that will cleanup the posix spawn attributes in case
    // we return in the middle of this function.
    lldb_utility::CleanUp <posix_spawnattr_t *, int> posix_spawnattr_cleanup(&attr, posix_spawnattr_destroy);

    sigset_t no_signals;
    sigset_t all_signals;
    sigemptyset (&no_signals);
    sigfillset (&all_signals);
    ::posix_spawnattr_setsigmask(&attr, &no_signals);
#if defined (__linux__)  || defined (__FreeBSD__)
    ::posix_spawnattr_setsigdefault(&attr, &no_signals);
#else
    ::posix_spawnattr_setsigdefault(&attr, &all_signals);
#endif

    short flags = GetPosixspawnFlags(launch_info);

    error.SetError( ::posix_spawnattr_setflags (&attr, flags), eErrorTypePOSIX);
    if (error.Fail() || log)
        error.PutToLog(log, "::posix_spawnattr_setflags ( &attr, flags=0x%8.8x )", flags);
    if (error.Fail())
        return error;

    // posix_spawnattr_setbinpref_np appears to be an Apple extension per:
    // http://www.unix.com/man-page/OSX/3/posix_spawnattr_setbinpref_np/
#if defined (__APPLE__) && !defined (__arm__)
    
    // Don't set the binpref if a shell was provided.  After all, that's only going to affect what version of the shell
    // is launched, not what fork of the binary is launched.  We insert "arch --arch <ARCH> as part of the shell invocation
    // to do that job on OSX.
    
    if (launch_info.GetShell() == nullptr)
    {
        // We don't need to do this for ARM, and we really shouldn't now that we
        // have multiple CPU subtypes and no posix_spawnattr call that allows us
        // to set which CPU subtype to launch...
        const ArchSpec &arch_spec = launch_info.GetArchitecture();
        cpu_type_t cpu = arch_spec.GetMachOCPUType();
        cpu_type_t sub = arch_spec.GetMachOCPUSubType();
        if (cpu != 0 &&
            cpu != static_cast<cpu_type_t>(UINT32_MAX) &&
            cpu != static_cast<cpu_type_t>(LLDB_INVALID_CPUTYPE) &&
            !(cpu == 0x01000007 && sub == 8)) // If haswell is specified, don't try to set the CPU type or we will fail 
        {
            size_t ocount = 0;
            error.SetError( ::posix_spawnattr_setbinpref_np (&attr, 1, &cpu, &ocount), eErrorTypePOSIX);
            if (error.Fail() || log)
                error.PutToLog(log, "::posix_spawnattr_setbinpref_np ( &attr, 1, cpu_type = 0x%8.8x, count => %llu )", cpu, (uint64_t)ocount);

            if (error.Fail() || ocount != 1)
                return error;
        }
    }

#endif

    const char *tmp_argv[2];
    char * const *argv = (char * const*)launch_info.GetArguments().GetConstArgumentVector();
    char * const *envp = (char * const*)launch_info.GetEnvironmentEntries().GetConstArgumentVector();
    if (argv == NULL)
    {
        // posix_spawn gets very unhappy if it doesn't have at least the program
        // name in argv[0]. One of the side affects I have noticed is the environment
        // variables don't make it into the child process if "argv == NULL"!!!
        tmp_argv[0] = exe_path;
        tmp_argv[1] = NULL;
        argv = (char * const*)tmp_argv;
    }

#if !defined (__APPLE__)
    // manage the working directory
    char current_dir[PATH_MAX];
    current_dir[0] = '\0';
#endif

    FileSpec working_dir{launch_info.GetWorkingDirectory()};
    if (working_dir)
    {
#if defined (__APPLE__)
        // Set the working directory on this thread only
        if (__pthread_chdir(working_dir.GetCString()) < 0) {
            if (errno == ENOENT) {
                error.SetErrorStringWithFormat("No such file or directory: %s",
                        working_dir.GetCString());
            } else if (errno == ENOTDIR) {
                error.SetErrorStringWithFormat("Path doesn't name a directory: %s",
//.........这里部分代码省略.........

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;
}