void
SBDebugger::RunCommandInterpreter (bool auto_handle_events,
bool spawn_thread,
SBCommandInterpreterRunOptions &options,
int &num_errors,
bool &quit_requested,
bool &stopped_for_crash)
{
if (m_opaque_sp)
{
CommandInterpreter &interp = m_opaque_sp->GetCommandInterpreter();
interp.RunCommandInterpreter(auto_handle_events, spawn_thread, options.ref());
num_errors = interp.GetNumErrors();
quit_requested = interp.GetQuitRequested();
stopped_for_crash = interp.GetStoppedForCrash();
}
}
void
Driver::MainLoop ()
{
if (::tcgetattr(STDIN_FILENO, &g_old_stdin_termios) == 0)
{
g_old_stdin_termios_is_valid = true;
atexit (reset_stdin_termios);
}
::setbuf (stdin, NULL);
::setbuf (stdout, NULL);
m_debugger.SetErrorFileHandle (stderr, false);
m_debugger.SetOutputFileHandle (stdout, false);
m_debugger.SetInputFileHandle (stdin, false); // Don't take ownership of STDIN yet...
m_debugger.SetUseExternalEditor(m_option_data.m_use_external_editor);
struct winsize window_size;
if (isatty (STDIN_FILENO)
&& ::ioctl (STDIN_FILENO, TIOCGWINSZ, &window_size) == 0)
{
if (window_size.ws_col > 0)
m_debugger.SetTerminalWidth (window_size.ws_col);
}
SBCommandInterpreter sb_interpreter = m_debugger.GetCommandInterpreter();
// Before we handle any options from the command line, we parse the
// .lldbinit file in the user's home directory.
SBCommandReturnObject result;
sb_interpreter.SourceInitFileInHomeDirectory(result);
if (GetDebugMode())
{
result.PutError (m_debugger.GetErrorFileHandle());
result.PutOutput (m_debugger.GetOutputFileHandle());
}
// Now we handle options we got from the command line
SBStream commands_stream;
// First source in the commands specified to be run before the file arguments are processed.
WriteCommandsForSourcing(eCommandPlacementBeforeFile, commands_stream);
const size_t num_args = m_option_data.m_args.size();
if (num_args > 0)
{
char arch_name[64];
if (m_debugger.GetDefaultArchitecture (arch_name, sizeof (arch_name)))
commands_stream.Printf("target create --arch=%s %s", arch_name, EscapeString(m_option_data.m_args[0]).c_str());
else
commands_stream.Printf("target create %s", EscapeString(m_option_data.m_args[0]).c_str());
if (!m_option_data.m_core_file.empty())
{
commands_stream.Printf(" --core %s", EscapeString(m_option_data.m_core_file).c_str());
}
commands_stream.Printf("\n");
if (num_args > 1)
{
commands_stream.Printf ("settings set -- target.run-args ");
for (size_t arg_idx = 1; arg_idx < num_args; ++arg_idx)
commands_stream.Printf(" %s", EscapeString(m_option_data.m_args[arg_idx]).c_str());
commands_stream.Printf("\n");
}
}
else if (!m_option_data.m_core_file.empty())
{
commands_stream.Printf("target create --core %s\n", EscapeString(m_option_data.m_core_file).c_str());
}
else if (!m_option_data.m_process_name.empty())
{
commands_stream.Printf ("process attach --name %s", EscapeString(m_option_data.m_process_name).c_str());
if (m_option_data.m_wait_for)
commands_stream.Printf(" --waitfor");
commands_stream.Printf("\n");
}
else if (LLDB_INVALID_PROCESS_ID != m_option_data.m_process_pid)
{
commands_stream.Printf ("process attach --pid %" PRIu64 "\n", m_option_data.m_process_pid);
}
WriteCommandsForSourcing(eCommandPlacementAfterFile, commands_stream);
if (GetDebugMode())
{
result.PutError(m_debugger.GetErrorFileHandle());
result.PutOutput(m_debugger.GetOutputFileHandle());
}
bool handle_events = true;
bool spawn_thread = false;
if (m_option_data.m_repl)
{
const char *repl_options = NULL;
if (!m_option_data.m_repl_options.empty())
repl_options = m_option_data.m_repl_options.c_str();
SBError error (m_debugger.RunREPL(m_option_data.m_repl_lang, repl_options));
if (error.Fail())
{
const char *error_cstr = error.GetCString();
if (error_cstr && error_cstr[0])
fprintf (stderr, "error: %s\n", error_cstr);
else
fprintf (stderr, "error: %u\n", error.GetError());
}
}
else
{
// Check if we have any data in the commands stream, and if so, save it to a temp file
// so we can then run the command interpreter using the file contents.
const char *commands_data = commands_stream.GetData();
const size_t commands_size = commands_stream.GetSize();
// The command file might have requested that we quit, this variable will track that.
bool quit_requested = false;
bool stopped_for_crash = false;
if (commands_data && commands_size)
{
int initial_commands_fds[2];
bool success = true;
FILE *commands_file = PrepareCommandsForSourcing (commands_data, commands_size, initial_commands_fds);
if (commands_file)
{
m_debugger.SetInputFileHandle (commands_file, true);
// Set the debugger into Sync mode when running the command file. Otherwise command files
// that run the target won't run in a sensible way.
bool old_async = m_debugger.GetAsync();
m_debugger.SetAsync(false);
int num_errors;
SBCommandInterpreterRunOptions options;
options.SetStopOnError (true);
if (m_option_data.m_batch)
options.SetStopOnCrash (true);
m_debugger.RunCommandInterpreter(handle_events,
spawn_thread,
options,
num_errors,
quit_requested,
stopped_for_crash);
if (m_option_data.m_batch && stopped_for_crash && !m_option_data.m_after_crash_commands.empty())
{
int crash_command_fds[2];
SBStream crash_commands_stream;
WriteCommandsForSourcing (eCommandPlacementAfterCrash, crash_commands_stream);
const char *crash_commands_data = crash_commands_stream.GetData();
const size_t crash_commands_size = crash_commands_stream.GetSize();
commands_file = PrepareCommandsForSourcing (crash_commands_data, crash_commands_size, crash_command_fds);
if (commands_file)
{
bool local_quit_requested;
bool local_stopped_for_crash;
m_debugger.SetInputFileHandle (commands_file, true);
m_debugger.RunCommandInterpreter(handle_events,
spawn_thread,
options,
num_errors,
local_quit_requested,
local_stopped_for_crash);
if (local_quit_requested)
quit_requested = true;
}
}
m_debugger.SetAsync(old_async);
}
else
success = false;
// Close any pipes that we still have ownership of
CleanupAfterCommandSourcing(initial_commands_fds);
// Something went wrong with command pipe
if (!success)
{
exit(1);
}
}
// Now set the input file handle to STDIN and run the command
// interpreter again in interactive mode and let the debugger
// take ownership of stdin
bool go_interactive = true;
if (quit_requested)
go_interactive = false;
else if (m_option_data.m_batch && !stopped_for_crash)
go_interactive = false;
if (go_interactive)
{
m_debugger.SetInputFileHandle (stdin, true);
m_debugger.RunCommandInterpreter(handle_events, spawn_thread);
}
}
reset_stdin_termios();
fclose (stdin);
SBDebugger::Destroy (m_debugger);
}
void
Driver::MainLoop ()
{
if (::tcgetattr(STDIN_FILENO, &g_old_stdin_termios) == 0)
{
g_old_stdin_termios_is_valid = true;
atexit (reset_stdin_termios);
}
::setbuf (stdin, NULL);
::setbuf (stdout, NULL);
m_debugger.SetErrorFileHandle (stderr, false);
m_debugger.SetOutputFileHandle (stdout, false);
m_debugger.SetInputFileHandle (stdin, false); // Don't take ownership of STDIN yet...
m_debugger.SetUseExternalEditor(m_option_data.m_use_external_editor);
struct winsize window_size;
if (isatty (STDIN_FILENO)
&& ::ioctl (STDIN_FILENO, TIOCGWINSZ, &window_size) == 0)
{
if (window_size.ws_col > 0)
m_debugger.SetTerminalWidth (window_size.ws_col);
}
SBCommandInterpreter sb_interpreter = m_debugger.GetCommandInterpreter();
// Before we handle any options from the command line, we parse the
// .lldbinit file in the user's home directory.
SBCommandReturnObject result;
sb_interpreter.SourceInitFileInHomeDirectory(result);
if (GetDebugMode())
{
result.PutError (m_debugger.GetErrorFileHandle());
result.PutOutput (m_debugger.GetOutputFileHandle());
}
// Now we handle options we got from the command line
SBStream commands_stream;
// First source in the commands specified to be run before the file arguments are processed.
WriteInitialCommands(true, commands_stream);
const size_t num_args = m_option_data.m_args.size();
if (num_args > 0)
{
char arch_name[64];
if (m_debugger.GetDefaultArchitecture (arch_name, sizeof (arch_name)))
commands_stream.Printf("target create --arch=%s \"%s\"", arch_name, m_option_data.m_args[0].c_str());
else
commands_stream.Printf("target create \"%s\"", m_option_data.m_args[0].c_str());
if (!m_option_data.m_core_file.empty())
{
commands_stream.Printf(" --core \"%s\"", m_option_data.m_core_file.c_str());
}
commands_stream.Printf("\n");
if (num_args > 1)
{
commands_stream.Printf ("settings set -- target.run-args ");
for (size_t arg_idx = 1; arg_idx < num_args; ++arg_idx)
{
const char *arg_cstr = m_option_data.m_args[arg_idx].c_str();
if (strchr(arg_cstr, '"') == NULL)
commands_stream.Printf(" \"%s\"", arg_cstr);
else
commands_stream.Printf(" '%s'", arg_cstr);
}
commands_stream.Printf("\n");
}
}
else if (!m_option_data.m_core_file.empty())
{
commands_stream.Printf("target create --core \"%s\"\n", m_option_data.m_core_file.c_str());
}
else if (!m_option_data.m_process_name.empty())
{
commands_stream.Printf ("process attach --name \"%s\"", m_option_data.m_process_name.c_str());
if (m_option_data.m_wait_for)
commands_stream.Printf(" --waitfor");
commands_stream.Printf("\n");
}
else if (LLDB_INVALID_PROCESS_ID != m_option_data.m_process_pid)
{
commands_stream.Printf ("process attach --pid %" PRIu64 "\n", m_option_data.m_process_pid);
}
WriteInitialCommands(false, commands_stream);
// Now that all option parsing is done, we try and parse the .lldbinit
// file in the current working directory
sb_interpreter.SourceInitFileInCurrentWorkingDirectory (result);
if (GetDebugMode())
{
result.PutError(m_debugger.GetErrorFileHandle());
result.PutOutput(m_debugger.GetOutputFileHandle());
}
bool handle_events = true;
bool spawn_thread = false;
// Check if we have any data in the commands stream, and if so, save it to a temp file
// so we can then run the command interpreter using the file contents.
const char *commands_data = commands_stream.GetData();
const size_t commands_size = commands_stream.GetSize();
// The command file might have requested that we quit, this variable will track that.
bool quit_requested = false;
if (commands_data && commands_size)
{
enum PIPES { READ, WRITE }; // Constants 0 and 1 for READ and WRITE
bool success = true;
int fds[2] = { -1, -1 };
int err = 0;
#ifdef _WIN32
err = _pipe(fds, commands_size, O_BINARY);
#else
err = pipe(fds);
#endif
if (err == 0)
{
ssize_t nrwr = write(fds[WRITE], commands_data, commands_size);
if (nrwr < 0)
{
fprintf(stderr, "error: write(%i, %p, %zd) failed (errno = %i) "
"when trying to open LLDB commands pipe\n",
fds[WRITE], commands_data, commands_size, errno);
success = false;
}
else if (static_cast<size_t>(nrwr) == commands_size)
{
// Close the write end of the pipe so when we give the read end to
// the debugger/command interpreter it will exit when it consumes all
// of the data
#ifdef _WIN32
_close(fds[WRITE]); fds[WRITE] = -1;
#else
close(fds[WRITE]); fds[WRITE] = -1;
#endif
// Now open the read file descriptor in a FILE * that we can give to
// the debugger as an input handle
FILE *commands_file = fdopen(fds[READ], "r");
if (commands_file)
{
fds[READ] = -1; // The FILE * 'commands_file' now owns the read descriptor
// Hand ownership if the FILE * over to the debugger for "commands_file".
m_debugger.SetInputFileHandle (commands_file, true);
// Set the debugger into Sync mode when running the command file. Otherwise command files
// that run the target won't run in a sensible way.
bool old_async = m_debugger.GetAsync();
m_debugger.SetAsync(false);
int num_errors;
SBCommandInterpreterRunOptions options;
options.SetStopOnError (true);
m_debugger.RunCommandInterpreter(handle_events, spawn_thread, options, num_errors, quit_requested);
m_debugger.SetAsync(old_async);
}
else
{
fprintf(stderr,
"error: fdopen(%i, \"r\") failed (errno = %i) when "
"trying to open LLDB commands pipe\n",
fds[READ], errno);
success = false;
}
}
else
{
assert(!"partial writes not handled");
success = false;
}
}
else
{
fprintf(stderr, "error: can't create pipe file descriptors for LLDB commands\n");
success = false;
}
// Close any pipes that we still have ownership of
if ( fds[WRITE] != -1)
{
#ifdef _WIN32
_close(fds[WRITE]); fds[WRITE] = -1;
#else
close(fds[WRITE]); fds[WRITE] = -1;
#endif
}
if ( fds[READ] != -1)
{
#ifdef _WIN32
_close(fds[READ]); fds[READ] = -1;
#else
close(fds[READ]); fds[READ] = -1;
#endif
}
// Something went wrong with command pipe
if (!success)
{
exit(1);
}
}
// Now set the input file handle to STDIN and run the command
// interpreter again in interactive mode and let the debugger
// take ownership of stdin
if (!quit_requested)
{
m_debugger.SetInputFileHandle (stdin, true);
m_debugger.RunCommandInterpreter(handle_events, spawn_thread);
}
reset_stdin_termios();
fclose (stdin);
SBDebugger::Destroy (m_debugger);
}
