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2011-09-06 Pedro Alves <pedro@codesourcery.com>

Browse Source 
* event-top.h (MAXPROMPTS, struct prompts): Delete.
	(set_async_annotation_level, set_async_prompt, pop_prompt)
	(push_prompt, new_async_prompt): Delete declarations.
	* top.h (get_prompt, set_prompt): Change prototype.
	(get_prefix, set_prefix, get_suffix, set_suffix): Delete
	declarations.
	* top.c (command_loop):
	(top_prompt): New global.
	(get_prefix, set_prefix, get_suffix, ): Delete.
	(get_prompt, set_prompt): Rewrite.
	(show_new_async_prompt): Rename to ...
	(show_prompt): ... this.
	(init_main): Adjust.  Don't handle --annotate=2 here.
	* event-top.c (new_async_prompt): Delete.
	(the_prompts): Delete.
	(more_to_come): Make static.
	(display_gdb_prompt): Use top_level_prompt() to compute the top
	level prompt, and don't notify the before_prompt observers
	directly here.  Always trick readline into not trying to display
	the prompt if sync_execution and displaying the primary prompt.
	If displaying a local/secondary prompt, always show it, even if
	sync_execution is set.
	(change_annotation_level): Delete.
	(top_level_prompt): New, based on change_annotation_level.
	(push_prompt, pop_prompt): Delete.
	(async_disable_stdin): No longer pushes prompt.
	(command_line_handler): No longer pushes or pops prompt.  If more
	input is expected, call display_gdb_prompt with an explicit empty
	prompt.
	(async_stop_sig): Adjust.
	(set_async_annotation_level, set_async_prompt): Delete.
	* python/python.c (before_prompt_hook): Adjust.
This commit is contained in:
Pedro Alves 2011-09-06 14:49:00 +00:00
parent b140b0101b
commit ab821bc647
6 changed files with 154 additions and 358 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
gdb/ChangeLog
View File

@ -1,3 +1,38 @@
2011-09-06 Pedro Alves <pedro@codesourcery.com>
* event-top.h (MAXPROMPTS, struct prompts): Delete.
(set_async_annotation_level, set_async_prompt, pop_prompt)
(push_prompt, new_async_prompt): Delete declarations.
* top.h (get_prompt, set_prompt): Change prototype.
(get_prefix, set_prefix, get_suffix, set_suffix): Delete
declarations.
* top.c (command_loop):
(top_prompt): New global.
(get_prefix, set_prefix, get_suffix, ): Delete.
(get_prompt, set_prompt): Rewrite.
(show_new_async_prompt): Rename to ...
(show_prompt): ... this.
(init_main): Adjust. Don't handle --annotate=2 here.
* event-top.c (new_async_prompt): Delete.
(the_prompts): Delete.
(more_to_come): Make static.
(display_gdb_prompt): Use top_level_prompt() to compute the top
level prompt, and don't notify the before_prompt observers
directly here. Always trick readline into not trying to display
the prompt if sync_execution and displaying the primary prompt.
If displaying a local/secondary prompt, always show it, even if
sync_execution is set.
(change_annotation_level): Delete.
(top_level_prompt): New, based on change_annotation_level.
(push_prompt, pop_prompt): Delete.
(async_disable_stdin): No longer pushes prompt.
(command_line_handler): No longer pushes or pops prompt. If more
input is expected, call display_gdb_prompt with an explicit empty
prompt.
(async_stop_sig): Adjust.
(set_async_annotation_level, set_async_prompt): Delete.
* python/python.c (before_prompt_hook): Adjust.
2011-09-05 Pedro Alves <pedro@codesourcery.com>
PR cli/13110

275
gdb/event-top.c
View File

@ -47,8 +47,8 @@
static void rl_callback_read_char_wrapper (gdb_client_data client_data);
static void command_line_handler (char *rl);
static void change_line_handler (void);
static void change_annotation_level (void);
static void command_handler (char *command);
static char *top_level_prompt (void);
/* Signal handlers. */
#ifdef SIGQUIT
@ -108,10 +108,6 @@ void (*call_readline) (gdb_client_data);
loop as default engine, and event-top.c is merged into top.c. */
int async_command_editing_p;
/* This variable contains the new prompt that the user sets with the
set prompt command. */
char *new_async_prompt;
/* This is the annotation suffix that will be used when the
annotation_level is 2. */
char *async_annotation_suffix;
@ -124,11 +120,6 @@ int exec_done_display_p = 0;
read commands from. */
int input_fd;
/* This is the prompt stack. Prompts will be pushed on the stack as
needed by the different 'kinds' of user inputs GDB is asking
for. See event-loop.h. */
struct prompts the_prompts;
/* Signal handling variables. */
/* Each of these is a pointer to a function that the event loop will
invoke if the corresponding signal has received. The real signal
@ -155,7 +146,7 @@ void *sigtstp_token;
because each line of input is handled by a different call to
command_line_handler, and normally there is no state retained
between different calls. */
int more_to_come = 0;
static int more_to_come = 0;
struct readline_input_state
{
@ -224,22 +215,28 @@ change_line_handler (void)
}
}
/* Displays the prompt. The prompt that is displayed is the current
top of the prompt stack, if the argument NEW_PROMPT is
0. Otherwise, it displays whatever NEW_PROMPT is. This is used
after each gdb command has completed, and in the following cases:
/* Displays the prompt. If the argument NEW_PROMPT is NULL, the
prompt that is displayed is the current top level prompt.
Otherwise, it displays whatever NEW_PROMPT is as a local/secondary
prompt.
This is used after each gdb command has completed, and in the
following cases:
1. When the user enters a command line which is ended by '\'
indicating that the command will continue on the next line.
In that case the prompt that is displayed is the empty string.
indicating that the command will continue on the next line. In
that case the prompt that is displayed is the empty string.
2. When the user is entering 'commands' for a breakpoint, or
actions for a tracepoint. In this case the prompt will be '>'
3. Other????
FIXME: 2. & 3. not implemented yet for async. */
3. On prompting for pagination. */
void
display_gdb_prompt (char *new_prompt)
{
int prompt_length = 0;
char *actual_gdb_prompt = NULL;
struct cleanup *old_chain;
/* Reset the nesting depth used when trace-commands is set. */
reset_command_nest_depth ();
@ -249,77 +246,42 @@ display_gdb_prompt (char *new_prompt)
if (!current_interp_display_prompt_p ())
return;
/* Get the prompt before the observers are called as observer hook
functions may change the prompt. Do not call observers on an
explicit prompt change as passed to this function, as this forms
a temporary prompt, IE, displayed but not set. Do not call
observers for a prompt change if sync_execution is set, it will
call us again with sync_execution not set when it wants to
display an actual prompt. */
if (! sync_execution && ! new_prompt)
old_chain = make_cleanup (free_current_contents, &actual_gdb_prompt);
/* Do not call the python hook on an explicit prompt change as
passed to this function, as this forms a secondary/local prompt,
IE, displayed but not set. */
if (! new_prompt)
{
char *post_gdb_prompt = NULL;
char *pre_gdb_prompt = xstrdup (get_prompt (0));
observer_notify_before_prompt (pre_gdb_prompt);
post_gdb_prompt = get_prompt (0);
/* If the observer changed the prompt, use that prompt. */
if (strcmp (pre_gdb_prompt, post_gdb_prompt) != 0)
actual_gdb_prompt = post_gdb_prompt;
xfree (pre_gdb_prompt);
}
/* In the sync_execution && !is_running case we need to display the prompt
even though it may be "" to avoid a double prompt, while installing the
callback handlers, in the async_editing_p case for pagination,
So fall through. */
if (sync_execution && is_running (inferior_ptid))
{
/* This is to trick readline into not trying to display the
prompt. Even though we display the prompt using this
function, readline still tries to do its own display if we
don't call rl_callback_handler_install and
rl_callback_handler_remove (which readline detects because a
global variable is not set). If readline did that, it could
mess up gdb signal handlers for SIGINT. Readline assumes
that between calls to rl_set_signals and rl_clear_signals gdb
doesn't do anything with the signal handlers. Well, that's
not the case, because when the target executes we change the
SIGINT signal handler. If we allowed readline to display the
prompt, the signal handler change would happen exactly
between the calls to the above two functions.
Calling rl_callback_handler_remove(), does the job. */
rl_callback_handler_remove ();
return;
}
/* If the observer changed the prompt, ACTUAL_GDB_PROMPT will not be
NULL. Otherwise, either copy the existing prompt, or set it to
NEW_PROMPT. */
if (! actual_gdb_prompt)
{
if (! new_prompt)
if (sync_execution)
{
/* Just use the top of the prompt stack. */
prompt_length = strlen (get_prefix (0)) +
strlen (get_suffix (0)) +
strlen (get_prompt (0)) + 1;
/* This is to trick readline into not trying to display the
prompt. Even though we display the prompt using this
function, readline still tries to do its own display if
we don't call rl_callback_handler_install and
rl_callback_handler_remove (which readline detects
because a global variable is not set). If readline did
that, it could mess up gdb signal handlers for SIGINT.
Readline assumes that between calls to rl_set_signals and
rl_clear_signals gdb doesn't do anything with the signal
handlers. Well, that's not the case, because when the
target executes we change the SIGINT signal handler. If
we allowed readline to display the prompt, the signal
handler change would happen exactly between the calls to
the above two functions. Calling
rl_callback_handler_remove(), does the job. */
actual_gdb_prompt = (char *) alloca (prompt_length);
/* Prefix needs to have new line at end. */
strcpy (actual_gdb_prompt, get_prefix (0));
strcat (actual_gdb_prompt, get_prompt (0));
/* Suffix needs to have a new line at end and \032 \032 at
beginning. */
strcat (actual_gdb_prompt, get_suffix (0));
rl_callback_handler_remove ();
return;
}
else
actual_gdb_prompt = new_prompt;;
{
/* Display the top level prompt. */
actual_gdb_prompt = top_level_prompt ();
}
}
else
actual_gdb_prompt = xstrdup (new_prompt);
if (async_command_editing_p)
{
@ -336,94 +298,61 @@ display_gdb_prompt (char *new_prompt)
fputs_unfiltered (actual_gdb_prompt, gdb_stdout);
gdb_flush (gdb_stdout);
}
do_cleanups (old_chain);
}
/* Used when the user requests a different annotation level, with
'set annotate'. It pushes a new prompt (with prefix and suffix) on top
of the prompt stack, if the annotation level desired is 2, otherwise
it pops the top of the prompt stack when we want the annotation level
to be the normal ones (1 or 0). */
static void
change_annotation_level (void)
/* Return the top level prompt, as specified by "set prompt", possibly
overriden by the python gdb.prompt_hook hook, and then composed
with the prompt prefix and suffix (annotations). The caller is
responsible for freeing the returned string. */
static char *
top_level_prompt (void)
{
char *prefix, *suffix;
char *prefix;
char *prompt = NULL;
char *suffix;
char *composed_prompt;
size_t prompt_length;
if (!get_prefix (0) || !get_prompt (0) || !get_suffix (0))
/* Give observers a chance of changing the prompt. E.g., the python
`gdb.prompt_hook' is installed as an observer. */
observer_notify_before_prompt (get_prompt ());
prompt = xstrdup (get_prompt ());
if (annotation_level >= 2)
{
/* The prompt stack has not been initialized to "", we are
using gdb w/o the --async switch. */
warning (_("Command has same effect as set annotate"));
return;
}
/* Prefix needs to have new line at end. */
prefix = (char *) alloca (strlen (async_annotation_suffix) + 10);
strcpy (prefix, "\n\032\032pre-");
strcat (prefix, async_annotation_suffix);
strcat (prefix, "\n");
if (annotation_level > 1)
{
if (!strcmp (get_prefix (0), "") && !strcmp (get_suffix (0), ""))
{
/* Push a new prompt if the previous annotation_level was not >1. */
prefix = (char *) alloca (strlen (async_annotation_suffix) + 10);
strcpy (prefix, "\n\032\032pre-");
strcat (prefix, async_annotation_suffix);
strcat (prefix, "\n");
suffix = (char *) alloca (strlen (async_annotation_suffix) + 6);
strcpy (suffix, "\n\032\032");
strcat (suffix, async_annotation_suffix);
strcat (suffix, "\n");
push_prompt (prefix, (char *) 0, suffix);
}
/* Suffix needs to have a new line at end and \032 \032 at
beginning. */
suffix = (char *) alloca (strlen (async_annotation_suffix) + 6);
strcpy (suffix, "\n\032\032");
strcat (suffix, async_annotation_suffix);
strcat (suffix, "\n");
}
else
{
if (strcmp (get_prefix (0), "") && strcmp (get_suffix (0), ""))
{
/* Pop the top of the stack, we are going back to annotation < 1. */
pop_prompt ();
}
prefix = "";
suffix = "";
}
}
/* Pushes a new prompt on the prompt stack. Each prompt has three
parts: prefix, prompt, suffix. Usually prefix and suffix are empty
strings, except when the annotation level is 2. Memory is allocated
within xstrdup for the new prompt. */
void
push_prompt (char *prefix, char *prompt, char *suffix)
{
the_prompts.top++;
set_prefix (prefix, 0);
prompt_length = strlen (prefix) + strlen (prompt) + strlen (suffix);
composed_prompt = xmalloc (prompt_length + 1);
/* Note that this function is used by the set annotate 2
command. This is why we take care of saving the old prompt
in case a new one is not specified. */
if (prompt)
set_prompt (prompt, 0);
else
set_prompt (get_prompt (-1), 0);
strcpy (composed_prompt, prefix);
strcat (composed_prompt, prompt);
strcat (composed_prompt, suffix);
set_suffix (suffix, 0);
}
xfree (prompt);
/* Pops the top of the prompt stack, and frees the memory allocated
for it. */
void
pop_prompt (void)
{
/* If we are not during a 'synchronous' execution command, in which
case, the top prompt would be empty. */
if (strcmp (get_prompt (0), ""))
/* This is for the case in which the prompt is set while the
annotation level is 2. The top prompt will be changed, but when
we return to annotation level < 2, we want that new prompt to be
in effect, until the user does another 'set prompt'. */
if (strcmp (get_prompt (0), get_prompt (-1)))
set_prompt (get_prompt (0), -1);
set_prefix (NULL, 0);
set_prompt (NULL, 0);
set_suffix (NULL, 0);
the_prompts.top--;
return composed_prompt;
}
/* When there is an event ready on the stdin file desriptor, instead
@ -460,7 +389,6 @@ async_enable_stdin (void)
sync_execution. Current target_terminal_ours() implementations
check for sync_execution before switching the terminal. */
target_terminal_ours ();
pop_prompt ();
sync_execution = 0;
}
}
@ -471,11 +399,7 @@ async_enable_stdin (void)
void
async_disable_stdin (void)
{
if (!sync_execution)
{
sync_execution = 1;
push_prompt ("", "", "");
}
sync_execution = 1;
}
@ -558,7 +482,6 @@ command_line_handler (char *rl)
p = readline_input_state.linebuffer_ptr;
xfree (readline_input_state.linebuffer);
more_to_come = 0;
pop_prompt ();
}
#ifdef STOP_SIGNAL
@ -611,8 +534,7 @@ command_line_handler (char *rl)
input expected to complete the command. So, we need to
print an empty prompt here. */
more_to_come = 1;
push_prompt ("", "", "");
display_gdb_prompt (0);
display_gdb_prompt ("");
return;
}
@ -967,7 +889,7 @@ handle_stop_sig (int sig)
static void
async_stop_sig (gdb_client_data arg)
{
char *prompt = get_prompt (0);
char *prompt = get_prompt ();
#if STOP_SIGNAL == SIGTSTP
signal (SIGTSTP, SIG_DFL);
@ -1033,21 +955,6 @@ set_async_editing_command (char *args, int from_tty,
change_line_handler ();
}
/* Called by do_setshow_command. */
void
set_async_annotation_level (char *args, int from_tty,
struct cmd_list_element *c)
{
change_annotation_level ();
}
/* Called by do_setshow_command. */
void
set_async_prompt (char *args, int from_tty, struct cmd_list_element *c)
{
set_prompt (new_async_prompt, 0);
}
/* Set things up for readline to be invoked via the alternate
interface, i.e. via a callback function (rl_callback_read_char),
and hook up instream to the event loop. */

52
gdb/event-top.h
View File

@ -25,51 +25,6 @@
struct cmd_list_element;
/* Stack for prompts. Each prompt is composed as a prefix, a prompt
and a suffix. The prompt to be displayed at any given time is the
one on top of the stack. A stack is necessary because of cases in
which the execution of a gdb command requires further input from
the user, like for instance 'commands' for breakpoints and
'actions' for tracepoints. In these cases, the prompt is '>' and
gdb should process input using the asynchronous readline interface
and the event loop. In order to achieve this, we need to save
somewhere the state of GDB, i.e. that it is processing user input
as part of a command and not as part of the top level command loop.
The prompt stack represents part of the saved state. Another part
would be the function that readline would invoke after a whole line
of input has ben entered. This second piece would be something
like, for instance, where to return within the code for the actions
commands after a line has been read. This latter portion has not
beeen implemented yet. The need for a 3-part prompt arises from
the annotation level. When this is set to 2, the prompt is
actually composed of a prefix, the prompt itself and a suffix. */
/* At any particular time there will be always at least one prompt on
the stack, the one being currently displayed by gdb. If gdb is
using annotation level equal 2, there will be 2 prompts on the
stack: the usual one, w/o prefix and suffix (at top - 1), and the
'composite' one with prefix and suffix added (at top). At this
time, this is the only use of the prompt stack. Resetting annotate
to 0 or 1, pops the top of the stack, resetting its size to one
element. The MAXPROMPTS limit is safe, for now. Once other cases
are dealt with (like the different prompts used for 'commands' or
'actions') this array implementation of the prompt stack may have
to change. */
#define MAXPROMPTS 10
struct prompts
{
struct
{
char *prefix;
char *prompt;
char *suffix;
}
prompt_stack[MAXPROMPTS];
int top;
};
/* Exported functions from event-top.c.
FIXME: these should really go into top.h. */
@ -79,10 +34,6 @@ void gdb_disable_readline (void);
extern void async_init_signals (void);
extern void set_async_editing_command (char *args, int from_tty,
struct cmd_list_element *c);
extern void set_async_annotation_level (char *args, int from_tty,
struct cmd_list_element *c);
extern void set_async_prompt (char *args, int from_tty,
struct cmd_list_element *c);
/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
#ifndef STOP_SIGNAL
@ -94,8 +45,6 @@ extern void handle_stop_sig (int sig);
#endif
extern void handle_sigint (int sig);
extern void handle_sigterm (int sig);
extern void pop_prompt (void);
extern void push_prompt (char *prefix, char *prompt, char *suffix);
extern void gdb_readline2 (void *client_data);
extern void mark_async_signal_handler_wrapper (void *token);
extern void async_request_quit (void *arg);
@ -109,7 +58,6 @@ extern void async_enable_stdin (void);
extern int async_command_editing_p;
extern int exec_done_display_p;
extern char *async_annotation_suffix;
extern char *new_async_prompt;
extern struct prompts the_prompts;
extern void (*call_readline) (void *);
extern void (*input_handler) (char *);

2
gdb/python/python.c
View File

@ -753,7 +753,7 @@ before_prompt_hook (const char *current_gdb_prompt)
/* If a prompt has been set, PROMPT will not be NULL. If it is
NULL, do not set the prompt. */
if (prompt != NULL)
set_prompt (prompt, 0);
set_prompt (prompt);
do_cleanups (cleanup);
return;

126
gdb/top.c
View File

@ -554,7 +554,7 @@ command_loop (void)
while (instream && !feof (instream))
{
if (window_hook && instream == stdin)
(*window_hook) (instream, get_prompt (0));
(*window_hook) (instream, get_prompt ());
quit_flag = 0;
if (instream == stdin && stdin_is_tty)
@ -563,7 +563,7 @@ command_loop (void)
/* Get a command-line. This calls the readline package. */
command = command_line_input (instream == stdin ?
get_prompt (0) : (char *) NULL,
get_prompt () : (char *) NULL,
instream == stdin, "prompt");
if (command == 0)
{
@ -1145,97 +1145,27 @@ and \"show warranty\" for details.\n");
}
/* get_prefix: access method for the GDB prefix string. */
/* The current top level prompt, settable with "set prompt", and/or
with the python `gdb.prompt_hook' hook. */
static char *top_prompt;
/* Access method for the GDB prompt string. */
char *
get_prefix (int level)
get_prompt (void)
{
return PREFIX (level);
return top_prompt;
}
/* set_prefix: set method for the GDB prefix string. */
/* Set method for the GDB prompt string. */
void
set_prefix (const char *s, int level)
set_prompt (const char *s)
{
/* If S is NULL, just free the PREFIX at level LEVEL and set to
NULL. */
if (s == NULL)
{
xfree (PREFIX (level));
PREFIX (level) = NULL;
}
else
{
char *p = xstrdup (s);
char *p = xstrdup (s);
xfree (PREFIX (level));
PREFIX (level) = p;
}
}
/* get_suffix: access method for the GDB suffix string. */
char *
get_suffix (int level)
{
return SUFFIX (level);
}
/* set_suffix: set method for the GDB suffix string. */
void
set_suffix (const char *s, int level)
{
/* If S is NULL, just free the SUFFIX at level LEVEL and set to
NULL. */
if (s == NULL)
{
xfree (SUFFIX (level));
SUFFIX (level) = NULL;
}
else
{
char *p = xstrdup (s);
xfree (SUFFIX (level));
SUFFIX (level) = p;
}
}
/* get_prompt: access method for the GDB prompt string. */
char *
get_prompt (int level)
{
return PROMPT (level);
}
void
set_prompt (const char *s, int level)
{
/* If S is NULL, just free the PROMPT at level LEVEL and set to
NULL. */
if (s == NULL)
{
xfree (PROMPT (level));
PROMPT (level) = NULL;
}
else
{
char *p = xstrdup (s);
xfree (PROMPT (0));
PROMPT (0) = p;
if (level == 0)
{
/* Also, free and set new_async_prompt so prompt changes sync up
with set/show prompt. */
xfree (new_async_prompt);
new_async_prompt = xstrdup (PROMPT (0));
}
}
xfree (top_prompt);
top_prompt = p;
}
@ -1589,8 +1519,8 @@ init_history (void)
}
static void
show_new_async_prompt (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
show_prompt (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
}
@ -1622,22 +1552,14 @@ show_exec_done_display_p (struct ui_file *file, int from_tty,
static void
init_main (void)
{
/* initialize the prompt stack to a simple "(gdb) " prompt or to
whatever the DEFAULT_PROMPT is. */
the_prompts.top = 0;
PREFIX (0) = "";
set_prompt (DEFAULT_PROMPT, 0);
SUFFIX (0) = "";
/* Initialize the prompt to a simple "(gdb) " prompt or to whatever
the DEFAULT_PROMPT is. */
set_prompt (DEFAULT_PROMPT);
/* Set things up for annotation_level > 1, if the user ever decides
to use it. */
async_annotation_suffix = "prompt";
/* If gdb was started with --annotate=2, this is equivalent to the
user entering the command 'set annotate 2' at the gdb prompt, so
we need to do extra processing. */
if (annotation_level > 1)
set_async_annotation_level (NULL, 0, NULL);
/* Set the important stuff up for command editing. */
command_editing_p = 1;
history_expansion_p = 0;
@ -1656,11 +1578,11 @@ init_main (void)
rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
add_setshow_string_cmd ("prompt", class_support,
&new_async_prompt,
&top_prompt,
_("Set gdb's prompt"),
_("Show gdb's prompt"),
NULL, set_async_prompt,
show_new_async_prompt,
NULL, NULL,
show_prompt,
&setlist, &showlist);
add_com ("dont-repeat", class_support, dont_repeat_command, _("\
@ -1716,7 +1638,7 @@ Set annotation_level."), _("\
Show annotation_level."), _("\
0 == normal; 1 == fullname (for use when running under emacs)\n\
2 == output annotated suitably for use by programs that control GDB."),
set_async_annotation_level,
NULL,
show_annotation_level,
&setlist, &showlist);

22
gdb/top.h
View File

@ -51,27 +51,11 @@ extern struct cleanup *prepare_execute_command (void);
/* This function returns a pointer to the string that is used
by gdb for its command prompt. */
extern char *get_prompt (int);
/* This function copies the specified string into the string that
is used by gdb for its command prompt. */
extern void set_prompt (const char *, int level);
extern char *get_prompt (void);
/* This function returns a pointer to the string that is used
by gdb for its command prompt prefix. */
extern char *get_prefix (int);
/* This function copies the specified string into the string that
is used by gdb for its command prompt prefix. */
extern void set_prefix (const char *, int);
/* This function returns a pointer to the string that is used
by gdb for its command prompt suffix. */
extern char *get_suffix (int);
/* This function copies the specified string into the string that
is used by gdb for its command prompt suffix. */
extern void set_suffix (const char *, int);
by gdb for its command prompt. */
extern void set_prompt (const char *s);
/* From random places. */
extern int readnow_symbol_files;