/* Top level stuff for GDB, the GNU debugger.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "language.h"
#include "terminal.h" /* For job_control. */
+#include "job-control.h"
#include "annotate.h"
#include "completer.h"
#include "top.h"
# include "tui/tui.h"
#endif
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
extern void initialize_all_files (void);
#define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
value);
}
-/* Flag to indicate whether a user defined command is currently running. */
-
-int in_user_command;
-
/* Current working directory. */
char *current_directory;
called to notify the GUI that we are done with the interaction
window and it can close it. */
-void (*deprecated_readline_begin_hook) (char *, ...);
+void (*deprecated_readline_begin_hook) (const char *, ...);
char *(*deprecated_readline_hook) (const char *);
void (*deprecated_readline_end_hook) (void);
void (*deprecated_context_hook) (int id);
+/* The highest UI number ever assigned. */
+static int highest_ui_num;
+
+/* See top.h. */
+
+struct ui *
+new_ui (FILE *instream, FILE *outstream, FILE *errstream)
+{
+ struct ui *ui;
+
+ ui = XCNEW (struct ui);
+
+ ui->num = ++highest_ui_num;
+ ui->stdin_stream = instream;
+ ui->instream = instream;
+ ui->outstream = outstream;
+ ui->errstream = errstream;
+
+ ui->input_fd = fileno (ui->instream);
+
+ ui->input_interactive_p = ISATTY (ui->instream);
+
+ ui->m_gdb_stdin = new stdio_file (ui->instream);
+ ui->m_gdb_stdout = new stdio_file (ui->outstream);
+ ui->m_gdb_stderr = new stderr_file (ui->errstream);
+ ui->m_gdb_stdlog = ui->m_gdb_stderr;
+
+ ui->prompt_state = PROMPT_NEEDED;
+
+ if (ui_list == NULL)
+ ui_list = ui;
+ else
+ {
+ struct ui *last;
+
+ for (last = ui_list; last->next != NULL; last = last->next)
+ ;
+ last->next = ui;
+ }
+
+ return ui;
+}
+
+static void
+free_ui (struct ui *ui)
+{
+ delete ui->m_gdb_stdin;
+ delete ui->m_gdb_stdout;
+ delete ui->m_gdb_stderr;
+
+ xfree (ui);
+}
+
+void
+delete_ui (struct ui *todel)
+{
+ struct ui *ui, *uiprev;
+
+ uiprev = NULL;
+
+ for (ui = ui_list; ui != NULL; uiprev = ui, ui = ui->next)
+ if (ui == todel)
+ break;
+
+ gdb_assert (ui != NULL);
+
+ if (uiprev != NULL)
+ uiprev->next = ui->next;
+ else
+ ui_list = ui->next;
+
+ free_ui (ui);
+}
+
+/* Cleanup that deletes a UI. */
+
+static void
+delete_ui_cleanup (void *void_ui)
+{
+ struct ui *ui = (struct ui *) void_ui;
+
+ delete_ui (ui);
+}
+
+/* See top.h. */
+
+struct cleanup *
+make_delete_ui_cleanup (struct ui *ui)
+{
+ return make_cleanup (delete_ui_cleanup, ui);
+}
+
+/* Open file named NAME for read/write, making sure not to make it the
+ controlling terminal. */
+
+static gdb_file_up
+open_terminal_stream (const char *name)
+{
+ int fd;
+
+ fd = gdb_open_cloexec (name, O_RDWR | O_NOCTTY, 0);
+ if (fd < 0)
+ perror_with_name (_("opening terminal failed"));
+
+ return gdb_file_up (fdopen (fd, "w+"));
+}
+
+/* Implementation of the "new-ui" command. */
+
+static void
+new_ui_command (char *args, int from_tty)
+{
+ struct ui *ui;
+ struct interp *interp;
+ gdb_file_up stream[3];
+ int i;
+ int res;
+ int argc;
+ char **argv;
+ const char *interpreter_name;
+ const char *tty_name;
+ struct cleanup *success_chain;
+ struct cleanup *failure_chain;
+
+ dont_repeat ();
+
+ argv = gdb_buildargv (args);
+ success_chain = make_cleanup_freeargv (argv);
+ argc = countargv (argv);
+
+ if (argc < 2)
+ error (_("usage: new-ui <interpreter> <tty>"));
+
+ interpreter_name = argv[0];
+ tty_name = argv[1];
+
+ {
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+
+ /* Open specified terminal, once for each of
+ stdin/stdout/stderr. */
+ for (i = 0; i < 3; i++)
+ stream[i] = open_terminal_stream (tty_name);
+
+ ui = new_ui (stream[0].get (), stream[1].get (), stream[2].get ());
+ failure_chain = make_cleanup (delete_ui_cleanup, ui);
+
+ ui->async = 1;
+
+ current_ui = ui;
+
+ set_top_level_interpreter (interpreter_name);
+
+ interp_pre_command_loop (top_level_interpreter ());
+
+ /* Make sure the files are not closed. */
+ stream[0].release ();
+ stream[1].release ();
+ stream[2].release ();
+
+ discard_cleanups (failure_chain);
+
+ /* This restores the previous UI and frees argv. */
+ do_cleanups (success_chain);
+ }
+
+ printf_unfiltered ("New UI allocated\n");
+}
+
/* Handler for SIGHUP. */
#ifdef SIGHUP
event-top.c into this file, top.c. */
/* static */ const char *source_file_name;
-/* Clean up on error during a "source" command (or execution of a
- user-defined command). */
-
-void
-do_restore_instream_cleanup (void *stream)
-{
- struct ui *ui = current_ui;
-
- /* Restore the previous input stream. */
- ui->instream = (FILE *) stream;
-}
-
/* Read commands from STREAM. */
void
read_command_file (FILE *stream)
{
struct ui *ui = current_ui;
- struct cleanup *cleanups;
- cleanups = make_cleanup (do_restore_instream_cleanup, ui->instream);
- ui->instream = stream;
+ scoped_restore save_instream
+ = make_scoped_restore (&ui->instream, stream);
/* Read commands from `instream' and execute them until end of file
or error reading instream. */
break;
command_handler (command);
}
-
- do_cleanups (cleanups);
}
\f
void (*pre_init_ui_hook) (void);
static void
do_chdir_cleanup (void *old_dir)
{
- chdir (old_dir);
+ chdir ((const char *) old_dir);
xfree (old_dir);
}
#endif
void
wait_sync_command_done (void)
{
+ /* Processing events may change the current UI. */
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+ struct ui *ui = current_ui;
+
while (gdb_do_one_event () >= 0)
- if (!sync_execution)
+ if (ui->prompt_state != PROMPT_BLOCKED)
break;
}
command's list, running command hooks or similars), and we
just ran a synchronous command that started the target, wait
for that command to end. */
- if (!current_ui->async && !was_sync && sync_execution)
+ if (!current_ui->async
+ && !was_sync
+ && current_ui->prompt_state == PROMPT_BLOCKED)
wait_sync_command_done ();
}
{
const char *cmd = p;
char *arg;
- int was_sync = sync_execution;
+ int was_sync = current_ui->prompt_state == PROMPT_BLOCKED;
line = p;
returned string, do not display it to the screen. BATCH_FLAG will be
temporarily set to true. */
-char *
+std::string
execute_command_to_string (char *p, int from_tty)
{
- struct ui_file *str_file;
struct cleanup *cleanup;
- char *retval;
/* GDB_STDOUT should be better already restored during these
restoration callbacks. */
cleanup = set_batch_flag_and_make_cleanup_restore_page_info ();
- make_cleanup_restore_integer (¤t_ui->async);
- current_ui->async = 0;
+ scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0);
- str_file = mem_fileopen ();
+ string_file str_file;
- make_cleanup_ui_file_delete (str_file);
- make_cleanup_restore_ui_file (&gdb_stdout);
- make_cleanup_restore_ui_file (&gdb_stderr);
- make_cleanup_restore_ui_file (&gdb_stdlog);
- make_cleanup_restore_ui_file (&gdb_stdtarg);
- make_cleanup_restore_ui_file (&gdb_stdtargerr);
+ current_uiout->redirect (&str_file);
+ make_cleanup_ui_out_redirect_pop (current_uiout);
- if (ui_out_redirect (current_uiout, str_file) < 0)
- warning (_("Current output protocol does not support redirection"));
- else
- make_cleanup_ui_out_redirect_pop (current_uiout);
-
- gdb_stdout = str_file;
- gdb_stderr = str_file;
- gdb_stdlog = str_file;
- gdb_stdtarg = str_file;
- gdb_stdtargerr = str_file;
+ scoped_restore save_stdout
+ = make_scoped_restore (&gdb_stdout, &str_file);
+ scoped_restore save_stderr
+ = make_scoped_restore (&gdb_stderr, &str_file);
+ scoped_restore save_stdlog
+ = make_scoped_restore (&gdb_stdlog, &str_file);
+ scoped_restore save_stdtarg
+ = make_scoped_restore (&gdb_stdtarg, &str_file);
+ scoped_restore save_stdtargerr
+ = make_scoped_restore (&gdb_stdtargerr, &str_file);
execute_command (p, from_tty);
- retval = ui_file_xstrdup (str_file, NULL);
-
do_cleanups (cleanup);
- return retval;
+ return std::move (str_file.string ());
}
\f
/* If we aren't reading from standard input, we are saving the last
thing read from stdin in line and don't want to delete it. Null
lines won't repeat here in any case. */
- if (ui->instream == stdin)
+ if (ui->instream == ui->stdin_stream)
*saved_command_line = 0;
}
/* Prevent dont_repeat from working, and return a cleanup that
restores the previous state. */
-struct cleanup *
+scoped_restore_tmpl<int>
prevent_dont_repeat (void)
{
- struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat);
-
- suppress_dont_repeat = 1;
- return result;
+ return make_scoped_restore (&suppress_dont_repeat, 1);
}
\f
ui->secondary_prompt_depth++;
back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
+ /* Processing events may change the current UI. */
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+
if (cleanup->target_is_async_orig)
target_async (0);
- /* Display our prompt and prevent double prompt display. */
- display_gdb_prompt (prompt);
+ /* Display our prompt and prevent double prompt display. Don't pass
+ down a NULL prompt, since that has special meaning for
+ display_gdb_prompt -- it indicates a request to print the primary
+ prompt, while we want a secondary prompt here. */
+ display_gdb_prompt (prompt != NULL ? prompt : "");
if (ui->command_editing)
rl_already_prompted = 1;
struct cleanup *old_chain;
local_history_filename
- = xstrprintf ("%s-gdb%d~", history_filename, getpid ());
+ = xstrprintf ("%s-gdb%ld~", history_filename, (long) getpid ());
old_chain = make_cleanup (xfree, local_history_filename);
ret = rename (history_filename, local_history_filename);
NULL is returned for end of file.
- *If* the instream == stdin & stdin is a terminal, the line read is
+ *If* input is from an interactive stream (stdin), the line read is
copied into the global 'saved_command_line' so that it can be
repeated.
as the user has requested. */
char *
-command_line_input (const char *prompt_arg, int repeat, char *annotation_suffix)
+command_line_input (const char *prompt_arg, int repeat,
+ const char *annotation_suffix)
{
static struct buffer cmd_line_buffer;
static int cmd_line_buffer_initialized;
struct ui *ui = current_ui;
const char *prompt = prompt_arg;
char *cmd;
+ int from_tty = ui->instream == ui->stdin_stream;
/* The annotation suffix must be non-NULL. */
if (annotation_suffix == NULL)
annotation_suffix = "";
- if (annotation_level > 1 && ui->instream == stdin)
+ if (from_tty && annotation_level > 1)
{
char *local_prompt;
if (source_file_name != NULL)
++source_line_number;
- if (annotation_level > 1 && ui->instream == stdin)
+ if (from_tty && annotation_level > 1)
{
puts_unfiltered ("\n\032\032pre-");
puts_unfiltered (annotation_suffix);
}
/* Don't use fancy stuff if not talking to stdin. */
- if (deprecated_readline_hook && input_from_terminal_p ())
+ if (deprecated_readline_hook
+ && from_tty
+ && input_interactive_p (current_ui))
{
rl = (*deprecated_readline_hook) (prompt);
}
- else if (command_editing_p && input_from_terminal_p ())
+ else if (command_editing_p
+ && from_tty
+ && input_interactive_p (current_ui))
{
rl = gdb_readline_wrapper (prompt);
}
if (cmd != NULL)
break;
+ /* Got partial input. I.e., got a line that ends with a
+ continuation character (backslash). Suppress printing the
+ prompt again. */
prompt = NULL;
}
/* Second line is a copyright notice. */
fprintf_filtered (stream,
- "Copyright (C) 2016 Free Software Foundation, Inc.\n");
+ "Copyright (C) 2017 Free Software Foundation, Inc.\n");
/* Following the copyright is a brief statement that the program is
free software, that users are free to copy and change it on
int
quit_confirm (void)
{
- struct ui_file *stb;
- struct cleanup *old_chain;
- char *str;
- int qr;
-
/* Don't even ask if we're only debugging a core file inferior. */
if (!have_live_inferiors ())
return 1;
/* Build the query string as a single string. */
- stb = mem_fileopen ();
- old_chain = make_cleanup_ui_file_delete (stb);
+ string_file stb;
- fprintf_filtered (stb, _("A debugging session is active.\n\n"));
- iterate_over_inferiors (print_inferior_quit_action, stb);
- fprintf_filtered (stb, _("\nQuit anyway? "));
+ stb.puts (_("A debugging session is active.\n\n"));
+ iterate_over_inferiors (print_inferior_quit_action, &stb);
+ stb.puts (_("\nQuit anyway? "));
- str = ui_file_xstrdup (stb, NULL);
- make_cleanup (xfree, str);
-
- qr = query ("%s", str);
- do_cleanups (old_chain);
- return qr;
+ return query ("%s", stb.c_str ());
}
/* Prepare to exit GDB cleanly by undoing any changes made to the
/* Quit without asking for confirmation. */
void
-quit_force (char *args, int from_tty)
+quit_force (int *exit_arg, int from_tty)
{
int exit_code = 0;
struct qt_args qt;
/* An optional expression may be used to cause gdb to terminate with the
value of that expression. */
- if (args)
- {
- struct value *val = parse_and_eval (args);
-
- exit_code = (int) value_as_long (val);
- }
+ if (exit_arg)
+ exit_code = *exit_arg;
else if (return_child_result)
exit_code = return_child_result_value;
- qt.args = args;
+ qt.args = NULL;
qt.from_tty = from_tty;
/* We want to handle any quit errors and exit regardless. */
/* Save the history information if it is appropriate to do so. */
TRY
{
- if (write_history_p && history_filename
- && input_from_terminal_p ())
- gdb_safe_append_history ();
+ if (write_history_p && history_filename)
+ {
+ struct ui *ui;
+ int save = 0;
+
+ /* History is currently shared between all UIs. If there's
+ any UI with a terminal, save history. */
+ ALL_UIS (ui)
+ {
+ if (input_interactive_p (ui))
+ {
+ save = 1;
+ break;
+ }
+ }
+
+ if (save)
+ gdb_safe_append_history ();
+ }
}
CATCH (ex, RETURN_MASK_ALL)
{
exit (exit_code);
}
-/* Returns whether GDB is running on a terminal and input is
- currently coming from that terminal. */
+/* The value of the "interactive-mode" setting. */
+static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
-int
-input_from_terminal_p (void)
+/* Implement the "show interactive-mode" option. */
+
+static void
+show_interactive_mode (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
{
- struct ui *ui = current_ui;
+ if (interactive_mode == AUTO_BOOLEAN_AUTO)
+ fprintf_filtered (file, "Debugger's interactive mode "
+ "is %s (currently %s).\n",
+ value, input_interactive_p (current_ui) ? "on" : "off");
+ else
+ fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
+}
+
+/* Returns whether GDB is running on an interactive terminal. */
+int
+input_interactive_p (struct ui *ui)
+{
if (batch_flag)
return 0;
- if (gdb_has_a_terminal () && ui->instream == stdin)
- return 1;
-
- /* If INSTREAM is unset, and we are not in a user command, we
- must be in Insight. That's like having a terminal, for our
- purposes. */
- if (ui->instream == NULL && !in_user_command)
- return 1;
+ if (interactive_mode != AUTO_BOOLEAN_AUTO)
+ return interactive_mode == AUTO_BOOLEAN_TRUE;
- return 0;
+ return ui->input_interactive_p;
}
\f
static void
static void
init_main (void)
{
+ struct cmd_list_element *c;
+
/* Initialize the prompt to a simple "(gdb) " prompt or to whatever
the DEFAULT_PROMPT is. */
set_prompt (DEFAULT_PROMPT);
/* Setup important stuff for command line editing. */
rl_completion_word_break_hook = gdb_completion_word_break_characters;
- rl_completion_entry_function = readline_line_completion_function;
- rl_completer_word_break_characters = default_word_break_characters ();
+ rl_attempted_completion_function = gdb_rl_attempted_completion_function;
+ set_rl_completer_word_break_characters (default_word_break_characters ());
rl_completer_quote_characters = get_gdb_completer_quote_characters ();
rl_completion_display_matches_hook = cli_display_match_list;
rl_readline_name = "gdb";
set_gdb_datadir, show_gdb_datadir,
&setlist,
&showlist);
+
+ add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
+ &interactive_mode, _("\
+Set whether GDB's standard input is a terminal."), _("\
+Show whether GDB's standard input is a terminal."), _("\
+If on, GDB assumes that standard input is a terminal. In practice, it\n\
+means that GDB should wait for the user to answer queries associated to\n\
+commands entered at the command prompt. If off, GDB assumes that standard\n\
+input is not a terminal, and uses the default answer to all queries.\n\
+If auto (the default), determine which mode to use based on the standard\n\
+input settings."),
+ NULL,
+ show_interactive_mode,
+ &setlist, &showlist);
+
+ c = add_cmd ("new-ui", class_support, new_ui_command, _("\
+Create a new UI. It takes two arguments:\n\
+The first argument is the name of the interpreter to run.\n\
+The second argument is the terminal the UI runs on.\n"), &cmdlist);
+ set_cmd_completer (c, interpreter_completer);
}
void
projects / deliverable / binutils-gdb.git / blobdiff