File: | src/gnu/usr.bin/binutils/gdb/event-top.c |
Warning: | line 662, column 7 Value stored to 'got_eof' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | /* Top level stuff for GDB, the GNU debugger. |
2 | Copyright 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc. |
3 | Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions. |
4 | |
5 | This file is part of GDB. |
6 | |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
11 | |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ |
21 | |
22 | #include "defs.h" |
23 | #include "top.h" |
24 | #include "inferior.h" |
25 | #include "target.h" |
26 | #include "terminal.h" /* for job_control */ |
27 | #include "event-loop.h" |
28 | #include "event-top.h" |
29 | #include "interps.h" |
30 | #include <signal.h> |
31 | |
32 | /* For dont_repeat() */ |
33 | #include "gdbcmd.h" |
34 | |
35 | /* readline include files */ |
36 | #include "readline/readline.h" |
37 | #include "readline/history.h" |
38 | |
39 | /* readline defines this. */ |
40 | #undef savestring |
41 | |
42 | static void rl_callback_read_char_wrapper (gdb_client_data client_data); |
43 | static void command_line_handler (char *rl); |
44 | static void command_line_handler_continuation (struct continuation_arg *arg); |
45 | static void change_line_handler (void); |
46 | static void change_annotation_level (void); |
47 | static void command_handler (char *command); |
48 | static void async_do_nothing (gdb_client_data arg); |
49 | static void async_disconnect (gdb_client_data arg); |
50 | static void async_stop_sig (gdb_client_data arg); |
51 | static void async_float_handler (gdb_client_data arg); |
52 | |
53 | /* Signal handlers. */ |
54 | static void handle_sigquit (int sig); |
55 | static void handle_sighup (int sig); |
56 | static void handle_sigfpe (int sig); |
57 | #if defined(SIGWINCH28) && defined(SIGWINCH_HANDLER) |
58 | static void handle_sigwinch (int sig); |
59 | #endif |
60 | |
61 | /* Functions to be invoked by the event loop in response to |
62 | signals. */ |
63 | static void async_do_nothing (gdb_client_data); |
64 | static void async_disconnect (gdb_client_data); |
65 | static void async_float_handler (gdb_client_data); |
66 | static void async_stop_sig (gdb_client_data); |
67 | |
68 | /* Readline offers an alternate interface, via callback |
69 | functions. These are all included in the file callback.c in the |
70 | readline distribution. This file provides (mainly) a function, which |
71 | the event loop uses as callback (i.e. event handler) whenever an event |
72 | is detected on the standard input file descriptor. |
73 | readline_callback_read_char is called (by the GDB event loop) whenever |
74 | there is a new character ready on the input stream. This function |
75 | incrementally builds a buffer internal to readline where it |
76 | accumulates the line read up to the point of invocation. In the |
77 | special case in which the character read is newline, the function |
78 | invokes a GDB supplied callback routine, which does the processing of |
79 | a full command line. This latter routine is the asynchronous analog |
80 | of the old command_line_input in gdb. Instead of invoking (and waiting |
81 | for) readline to read the command line and pass it back to |
82 | command_loop for processing, the new command_line_handler function has |
83 | the command line already available as its parameter. INPUT_HANDLER is |
84 | to be set to the function that readline will invoke when a complete |
85 | line of input is ready. CALL_READLINE is to be set to the function |
86 | that readline offers as callback to the event_loop. */ |
87 | |
88 | void (*input_handler) (char *); |
89 | void (*call_readline) (gdb_client_data); |
90 | |
91 | /* Important variables for the event loop. */ |
92 | |
93 | /* This is used to determine if GDB is using the readline library or |
94 | its own simplified form of readline. It is used by the asynchronous |
95 | form of the set editing command. |
96 | ezannoni: as of 1999-04-29 I expect that this |
97 | variable will not be used after gdb is changed to use the event |
98 | loop as default engine, and event-top.c is merged into top.c. */ |
99 | int async_command_editing_p; |
100 | |
101 | /* This variable contains the new prompt that the user sets with the |
102 | set prompt command. */ |
103 | char *new_async_prompt; |
104 | |
105 | /* This is the annotation suffix that will be used when the |
106 | annotation_level is 2. */ |
107 | char *async_annotation_suffix; |
108 | |
109 | /* This is used to display the notification of the completion of an |
110 | asynchronous execution command. */ |
111 | int exec_done_display_p = 0; |
112 | |
113 | /* This is the file descriptor for the input stream that GDB uses to |
114 | read commands from. */ |
115 | int input_fd; |
116 | |
117 | /* This is the prompt stack. Prompts will be pushed on the stack as |
118 | needed by the different 'kinds' of user inputs GDB is asking |
119 | for. See event-loop.h. */ |
120 | struct prompts the_prompts; |
121 | |
122 | /* signal handling variables */ |
123 | /* Each of these is a pointer to a function that the event loop will |
124 | invoke if the corresponding signal has received. The real signal |
125 | handlers mark these functions as ready to be executed and the event |
126 | loop, in a later iteration, calls them. See the function |
127 | invoke_async_signal_handler. */ |
128 | void *sigint_token; |
129 | #ifdef SIGHUP1 |
130 | void *sighup_token; |
131 | #endif |
132 | void *sigquit_token; |
133 | void *sigfpe_token; |
134 | #if defined(SIGWINCH28) && defined(SIGWINCH_HANDLER) |
135 | void *sigwinch_token; |
136 | #endif |
137 | #ifdef STOP_SIGNAL18 |
138 | void *sigtstp_token; |
139 | #endif |
140 | |
141 | /* Structure to save a partially entered command. This is used when |
142 | the user types '\' at the end of a command line. This is necessary |
143 | because each line of input is handled by a different call to |
144 | command_line_handler, and normally there is no state retained |
145 | between different calls. */ |
146 | int more_to_come = 0; |
147 | |
148 | struct readline_input_state |
149 | { |
150 | char *linebuffer; |
151 | char *linebuffer_ptr; |
152 | } |
153 | readline_input_state; |
154 | |
155 | /* This hook is called by rl_callback_read_char_wrapper after each |
156 | character is processed. */ |
157 | void (*after_char_processing_hook) (); |
158 | |
159 | |
160 | /* Wrapper function for calling into the readline library. The event |
161 | loop expects the callback function to have a paramter, while readline |
162 | expects none. */ |
163 | static void |
164 | rl_callback_read_char_wrapper (gdb_client_data client_data) |
165 | { |
166 | rl_callback_read_char (); |
167 | if (after_char_processing_hook) |
168 | (*after_char_processing_hook) (); |
169 | } |
170 | |
171 | /* Initialize all the necessary variables, start the event loop, |
172 | register readline, and stdin, start the loop. */ |
173 | void |
174 | cli_command_loop (void) |
175 | { |
176 | int length; |
177 | char *a_prompt; |
178 | char *gdb_prompt = get_prompt (); |
179 | |
180 | /* If we are using readline, set things up and display the first |
181 | prompt, otherwise just print the prompt. */ |
182 | if (async_command_editing_p) |
183 | { |
184 | /* Tell readline what the prompt to display is and what function it |
185 | will need to call after a whole line is read. This also displays |
186 | the first prompt. */ |
187 | length = strlen (PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix) + strlen (gdb_prompt) + strlen (SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix) + 1; |
188 | a_prompt = (char *) xmalloc (length); |
189 | strcpy (a_prompt, PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix); |
190 | strcat (a_prompt, gdb_prompt); |
191 | strcat (a_prompt, SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix); |
192 | rl_callback_handler_install (a_prompt, input_handler); |
193 | } |
194 | else |
195 | display_gdb_prompt (0); |
196 | |
197 | /* Now it's time to start the event loop. */ |
198 | start_event_loop (); |
199 | } |
200 | |
201 | /* Change the function to be invoked every time there is a character |
202 | ready on stdin. This is used when the user sets the editing off, |
203 | therefore bypassing readline, and letting gdb handle the input |
204 | itself, via gdb_readline2. Also it is used in the opposite case in |
205 | which the user sets editing on again, by restoring readline |
206 | handling of the input. */ |
207 | static void |
208 | change_line_handler (void) |
209 | { |
210 | /* NOTE: this operates on input_fd, not instream. If we are reading |
211 | commands from a file, instream will point to the file. However in |
212 | async mode, we always read commands from a file with editing |
213 | off. This means that the 'set editing on/off' will have effect |
214 | only on the interactive session. */ |
215 | |
216 | if (async_command_editing_p) |
217 | { |
218 | /* Turn on editing by using readline. */ |
219 | call_readline = rl_callback_read_char_wrapper; |
220 | input_handler = command_line_handler; |
221 | } |
222 | else |
223 | { |
224 | /* Turn off editing by using gdb_readline2. */ |
225 | rl_callback_handler_remove (); |
226 | call_readline = gdb_readline2; |
227 | |
228 | /* Set up the command handler as well, in case we are called as |
229 | first thing from .gdbinit. */ |
230 | input_handler = command_line_handler; |
231 | } |
232 | } |
233 | |
234 | /* Displays the prompt. The prompt that is displayed is the current |
235 | top of the prompt stack, if the argument NEW_PROMPT is |
236 | 0. Otherwise, it displays whatever NEW_PROMPT is. This is used |
237 | after each gdb command has completed, and in the following cases: |
238 | 1. when the user enters a command line which is ended by '\' |
239 | indicating that the command will continue on the next line. |
240 | In that case the prompt that is displayed is the empty string. |
241 | 2. When the user is entering 'commands' for a breakpoint, or |
242 | actions for a tracepoint. In this case the prompt will be '>' |
243 | 3. Other???? |
244 | FIXME: 2. & 3. not implemented yet for async. */ |
245 | void |
246 | display_gdb_prompt (char *new_prompt) |
247 | { |
248 | int prompt_length = 0; |
249 | char *gdb_prompt = get_prompt (); |
250 | |
251 | /* Each interpreter has its own rules on displaying the command |
252 | prompt. */ |
253 | if (!current_interp_display_prompt_p ()) |
254 | return; |
255 | |
256 | if (target_executing && sync_execution) |
257 | { |
258 | /* This is to trick readline into not trying to display the |
259 | prompt. Even though we display the prompt using this |
260 | function, readline still tries to do its own display if we |
261 | don't call rl_callback_handler_install and |
262 | rl_callback_handler_remove (which readline detects because a |
263 | global variable is not set). If readline did that, it could |
264 | mess up gdb signal handlers for SIGINT. Readline assumes |
265 | that between calls to rl_set_signals and rl_clear_signals gdb |
266 | doesn't do anything with the signal handlers. Well, that's |
267 | not the case, because when the target executes we change the |
268 | SIGINT signal handler. If we allowed readline to display the |
269 | prompt, the signal handler change would happen exactly |
270 | between the calls to the above two functions. |
271 | Calling rl_callback_handler_remove(), does the job. */ |
272 | |
273 | rl_callback_handler_remove (); |
274 | return; |
275 | } |
276 | |
277 | if (!new_prompt) |
278 | { |
279 | /* Just use the top of the prompt stack. */ |
280 | prompt_length = strlen (PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix) + |
281 | strlen (SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix) + |
282 | strlen (gdb_prompt) + 1; |
283 | |
284 | new_prompt = (char *) alloca (prompt_length)__builtin_alloca(prompt_length); |
285 | |
286 | /* Prefix needs to have new line at end. */ |
287 | strcpy (new_prompt, PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix); |
288 | strcat (new_prompt, gdb_prompt); |
289 | /* Suffix needs to have a new line at end and \032 \032 at |
290 | beginning. */ |
291 | strcat (new_prompt, SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix); |
292 | } |
293 | |
294 | if (async_command_editing_p) |
295 | { |
296 | rl_callback_handler_remove (); |
297 | rl_callback_handler_install (new_prompt, input_handler); |
298 | } |
299 | /* new_prompt at this point can be the top of the stack or the one passed in */ |
300 | else if (new_prompt) |
301 | { |
302 | /* Don't use a _filtered function here. It causes the assumed |
303 | character position to be off, since the newline we read from |
304 | the user is not accounted for. */ |
305 | fputs_unfiltered (new_prompt, gdb_stdout); |
306 | gdb_flush (gdb_stdout); |
307 | } |
308 | } |
309 | |
310 | /* Used when the user requests a different annotation level, with |
311 | 'set annotate'. It pushes a new prompt (with prefix and suffix) on top |
312 | of the prompt stack, if the annotation level desired is 2, otherwise |
313 | it pops the top of the prompt stack when we want the annotation level |
314 | to be the normal ones (1 or 0). */ |
315 | static void |
316 | change_annotation_level (void) |
317 | { |
318 | char *prefix, *suffix; |
319 | |
320 | if (!PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix || !PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt || !SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix) |
321 | { |
322 | /* The prompt stack has not been initialized to "", we are |
323 | using gdb w/o the --async switch */ |
324 | warning ("Command has same effect as set annotate"); |
325 | return; |
326 | } |
327 | |
328 | if (annotation_level > 1) |
329 | { |
330 | if (!strcmp (PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix, "") && !strcmp (SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix, "")) |
331 | { |
332 | /* Push a new prompt if the previous annotation_level was not >1. */ |
333 | prefix = (char *) alloca (strlen (async_annotation_suffix) + 10)__builtin_alloca(strlen (async_annotation_suffix) + 10); |
334 | strcpy (prefix, "\n\032\032pre-"); |
335 | strcat (prefix, async_annotation_suffix); |
336 | strcat (prefix, "\n"); |
337 | |
338 | suffix = (char *) alloca (strlen (async_annotation_suffix) + 6)__builtin_alloca(strlen (async_annotation_suffix) + 6); |
339 | strcpy (suffix, "\n\032\032"); |
340 | strcat (suffix, async_annotation_suffix); |
341 | strcat (suffix, "\n"); |
342 | |
343 | push_prompt (prefix, (char *) 0, suffix); |
344 | } |
345 | } |
346 | else |
347 | { |
348 | if (strcmp (PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix, "") && strcmp (SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix, "")) |
349 | { |
350 | /* Pop the top of the stack, we are going back to annotation < 1. */ |
351 | pop_prompt (); |
352 | } |
353 | } |
354 | } |
355 | |
356 | /* Pushes a new prompt on the prompt stack. Each prompt has three |
357 | parts: prefix, prompt, suffix. Usually prefix and suffix are empty |
358 | strings, except when the annotation level is 2. Memory is allocated |
359 | within savestring for the new prompt. */ |
360 | void |
361 | push_prompt (char *prefix, char *prompt, char *suffix) |
362 | { |
363 | the_prompts.top++; |
364 | PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix = savestring (prefix, strlen (prefix)); |
365 | |
366 | /* Note that this function is used by the set annotate 2 |
367 | command. This is why we take care of saving the old prompt |
368 | in case a new one is not specified. */ |
369 | if (prompt) |
370 | PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt = savestring (prompt, strlen (prompt)); |
371 | else |
372 | PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt = savestring (PROMPT (-1)the_prompts.prompt_stack[the_prompts.top + -1].prompt, strlen (PROMPT (-1)the_prompts.prompt_stack[the_prompts.top + -1].prompt)); |
373 | |
374 | SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix = savestring (suffix, strlen (suffix)); |
375 | } |
376 | |
377 | /* Pops the top of the prompt stack, and frees the memory allocated for it. */ |
378 | void |
379 | pop_prompt (void) |
380 | { |
381 | /* If we are not during a 'synchronous' execution command, in which |
382 | case, the top prompt would be empty. */ |
383 | if (strcmp (PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt, "")) |
384 | /* This is for the case in which the prompt is set while the |
385 | annotation level is 2. The top prompt will be changed, but when |
386 | we return to annotation level < 2, we want that new prompt to be |
387 | in effect, until the user does another 'set prompt'. */ |
388 | if (strcmp (PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt, PROMPT (-1)the_prompts.prompt_stack[the_prompts.top + -1].prompt)) |
389 | { |
390 | xfree (PROMPT (-1)the_prompts.prompt_stack[the_prompts.top + -1].prompt); |
391 | PROMPT (-1)the_prompts.prompt_stack[the_prompts.top + -1].prompt = savestring (PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt, strlen (PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt)); |
392 | } |
393 | |
394 | xfree (PREFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].prefix); |
395 | xfree (PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt); |
396 | xfree (SUFFIX (0)the_prompts.prompt_stack[the_prompts.top + 0].suffix); |
397 | the_prompts.top--; |
398 | } |
399 | |
400 | /* When there is an event ready on the stdin file desriptor, instead |
401 | of calling readline directly throught the callback function, or |
402 | instead of calling gdb_readline2, give gdb a chance to detect |
403 | errors and do something. */ |
404 | void |
405 | stdin_event_handler (int error, gdb_client_data client_data) |
406 | { |
407 | if (error) |
408 | { |
409 | printf_unfiltered ("error detected on stdin\n"); |
410 | delete_file_handler (input_fd); |
411 | discard_all_continuations (); |
412 | /* If stdin died, we may as well kill gdb. */ |
413 | quit_command ((char *) 0, stdin(&__sF[0]) == instream); |
414 | } |
415 | else |
416 | (*call_readline) (client_data); |
417 | } |
418 | |
419 | /* Re-enable stdin after the end of an execution command in |
420 | synchronous mode, or after an error from the target, and we aborted |
421 | the exec operation. */ |
422 | |
423 | void |
424 | async_enable_stdin (void *dummy) |
425 | { |
426 | /* See NOTE in async_disable_stdin() */ |
427 | /* FIXME: cagney/1999-09-27: Call this before clearing |
428 | sync_execution. Current target_terminal_ours() implementations |
429 | check for sync_execution before switching the terminal. */ |
430 | target_terminal_ours ()(*current_target.to_terminal_ours) (); |
431 | pop_prompt (); |
432 | sync_execution = 0; |
433 | } |
434 | |
435 | /* Disable reads from stdin (the console) marking the command as |
436 | synchronous. */ |
437 | |
438 | void |
439 | async_disable_stdin (void) |
440 | { |
441 | sync_execution = 1; |
442 | push_prompt ("", "", ""); |
443 | /* FIXME: cagney/1999-09-27: At present this call is technically |
444 | redundant since infcmd.c and infrun.c both already call |
445 | target_terminal_inferior(). As the terminal handling (in |
446 | sync/async mode) is refined, the duplicate calls can be |
447 | eliminated (Here or in infcmd.c/infrun.c). */ |
448 | target_terminal_inferior ()(*current_target.to_terminal_inferior) (); |
449 | /* Add the reinstate of stdin to the list of cleanups to be done |
450 | in case the target errors out and dies. These cleanups are also |
451 | done in case of normal successful termination of the execution |
452 | command, by complete_execution(). */ |
453 | make_exec_error_cleanup (async_enable_stdin, NULL((void*)0)); |
454 | } |
455 | |
456 | |
457 | /* Handles a gdb command. This function is called by |
458 | command_line_handler, which has processed one or more input lines |
459 | into COMMAND. */ |
460 | /* NOTE: 1999-04-30 This is the asynchronous version of the command_loop |
461 | function. The command_loop function will be obsolete when we |
462 | switch to use the event loop at every execution of gdb. */ |
463 | static void |
464 | command_handler (char *command) |
465 | { |
466 | struct cleanup *old_chain; |
467 | int stdin_is_tty = ISATTY (stdin)(isatty ((!__isthreaded ? (((&__sF[0]))->_file) : (fileno )((&__sF[0]))))); |
468 | struct continuation_arg *arg1; |
469 | struct continuation_arg *arg2; |
470 | long time_at_cmd_start; |
471 | #ifdef HAVE_SBRK1 |
472 | long space_at_cmd_start = 0; |
473 | #endif |
474 | extern int display_time; |
475 | extern int display_space; |
476 | |
477 | quit_flag = 0; |
478 | if (instream == stdin(&__sF[0]) && stdin_is_tty) |
479 | reinitialize_more_filter (); |
480 | old_chain = make_cleanup (null_cleanup, 0); |
481 | |
482 | /* If readline returned a NULL command, it means that the |
483 | connection with the terminal is gone. This happens at the |
484 | end of a testsuite run, after Expect has hung up |
485 | but GDB is still alive. In such a case, we just quit gdb |
486 | killing the inferior program too. */ |
487 | if (command == 0) |
488 | quit_command ((char *) 0, stdin(&__sF[0]) == instream); |
489 | |
490 | time_at_cmd_start = get_run_time (); |
491 | |
492 | if (display_space) |
493 | { |
494 | #ifdef HAVE_SBRK1 |
495 | char *lim = (char *) sbrk (0); |
496 | space_at_cmd_start = lim - lim_at_start; |
497 | #endif |
498 | } |
499 | |
500 | execute_command (command, instream == stdin(&__sF[0])); |
501 | |
502 | /* Set things up for this function to be compete later, once the |
503 | execution has completed, if we are doing an execution command, |
504 | otherwise, just go ahead and finish. */ |
505 | if (target_can_async_p ()(current_target.to_can_async_p ()) && target_executing) |
506 | { |
507 | arg1 = |
508 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
509 | arg2 = |
510 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
511 | arg1->next = arg2; |
512 | arg2->next = NULL((void*)0); |
513 | arg1->data.longint = time_at_cmd_start; |
514 | #ifdef HAVE_SBRK1 |
515 | arg2->data.longint = space_at_cmd_start; |
516 | #endif |
517 | add_continuation (command_line_handler_continuation, arg1); |
518 | } |
519 | |
520 | /* Do any commands attached to breakpoint we stopped at. Only if we |
521 | are always running synchronously. Or if we have just executed a |
522 | command that doesn't start the target. */ |
523 | if (!target_can_async_p ()(current_target.to_can_async_p ()) || !target_executing) |
524 | { |
525 | bpstat_do_actions (&stop_bpstat); |
526 | do_cleanups (old_chain); |
527 | |
528 | if (display_time) |
529 | { |
530 | long cmd_time = get_run_time () - time_at_cmd_start; |
531 | |
532 | printf_unfiltered ("Command execution time: %ld.%06ld\n", |
533 | cmd_time / 1000000, cmd_time % 1000000); |
534 | } |
535 | |
536 | if (display_space) |
537 | { |
538 | #ifdef HAVE_SBRK1 |
539 | char *lim = (char *) sbrk (0); |
540 | long space_now = lim - lim_at_start; |
541 | long space_diff = space_now - space_at_cmd_start; |
542 | |
543 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", |
544 | space_now, |
545 | (space_diff >= 0 ? '+' : '-'), |
546 | space_diff); |
547 | #endif |
548 | } |
549 | } |
550 | } |
551 | |
552 | /* Do any commands attached to breakpoint we stopped at. Only if we |
553 | are always running synchronously. Or if we have just executed a |
554 | command that doesn't start the target. */ |
555 | void |
556 | command_line_handler_continuation (struct continuation_arg *arg) |
557 | { |
558 | extern int display_time; |
559 | extern int display_space; |
560 | |
561 | long time_at_cmd_start = arg->data.longint; |
562 | long space_at_cmd_start = arg->next->data.longint; |
563 | |
564 | bpstat_do_actions (&stop_bpstat); |
565 | /*do_cleanups (old_chain); *//*?????FIXME????? */ |
566 | |
567 | if (display_time) |
568 | { |
569 | long cmd_time = get_run_time () - time_at_cmd_start; |
570 | |
571 | printf_unfiltered ("Command execution time: %ld.%06ld\n", |
572 | cmd_time / 1000000, cmd_time % 1000000); |
573 | } |
574 | if (display_space) |
575 | { |
576 | #ifdef HAVE_SBRK1 |
577 | char *lim = (char *) sbrk (0); |
578 | long space_now = lim - lim_at_start; |
579 | long space_diff = space_now - space_at_cmd_start; |
580 | |
581 | printf_unfiltered ("Space used: %ld (%c%ld for this command)\n", |
582 | space_now, |
583 | (space_diff >= 0 ? '+' : '-'), |
584 | space_diff); |
585 | #endif |
586 | } |
587 | } |
588 | |
589 | /* Handle a complete line of input. This is called by the callback |
590 | mechanism within the readline library. Deal with incomplete commands |
591 | as well, by saving the partial input in a global buffer. */ |
592 | |
593 | /* NOTE: 1999-04-30 This is the asynchronous version of the |
594 | command_line_input function. command_line_input will become |
595 | obsolete once we use the event loop as the default mechanism in |
596 | GDB. */ |
597 | static void |
598 | command_line_handler (char *rl) |
599 | { |
600 | static char *linebuffer = 0; |
601 | static unsigned linelength = 0; |
602 | char *p; |
603 | char *p1; |
604 | extern char *line; |
605 | extern int linesize; |
606 | char *nline; |
607 | char got_eof = 0; |
608 | |
609 | |
610 | int repeat = (instream == stdin(&__sF[0])); |
611 | |
612 | if (annotation_level > 1 && instream == stdin(&__sF[0])) |
613 | { |
614 | printf_unfiltered ("\n\032\032post-"); |
615 | puts_unfiltered (async_annotation_suffix); |
616 | printf_unfiltered ("\n"); |
617 | } |
618 | |
619 | if (linebuffer == 0) |
620 | { |
621 | linelength = 80; |
622 | linebuffer = (char *) xmalloc (linelength); |
623 | } |
624 | |
625 | p = linebuffer; |
626 | |
627 | if (more_to_come) |
628 | { |
629 | strcpy (linebuffer, readline_input_state.linebuffer); |
630 | p = readline_input_state.linebuffer_ptr; |
631 | xfree (readline_input_state.linebuffer); |
632 | more_to_come = 0; |
633 | pop_prompt (); |
634 | } |
635 | |
636 | #ifdef STOP_SIGNAL18 |
637 | if (job_control) |
638 | signal (STOP_SIGNAL18, handle_stop_sig); |
639 | #endif |
640 | |
641 | /* Make sure that all output has been output. Some machines may let |
642 | you get away with leaving out some of the gdb_flush, but not all. */ |
643 | wrap_here (""); |
644 | gdb_flush (gdb_stdout); |
645 | gdb_flush (gdb_stderr); |
646 | |
647 | if (source_file_name != NULL((void*)0)) |
648 | { |
649 | ++source_line_number; |
650 | sprintf (source_error, |
651 | "%s%s:%d: Error in sourced command file:\n", |
652 | source_pre_error, |
653 | source_file_name, |
654 | source_line_number); |
655 | error_pre_print = source_error; |
656 | } |
657 | |
658 | /* If we are in this case, then command_handler will call quit |
659 | and exit from gdb. */ |
660 | if (!rl || rl == (char *) EOF(-1)) |
661 | { |
662 | got_eof = 1; |
Value stored to 'got_eof' is never read | |
663 | command_handler (0); |
664 | } |
665 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) |
666 | { |
667 | linelength = strlen (rl) + 1 + (p - linebuffer); |
668 | nline = (char *) xrealloc (linebuffer, linelength); |
669 | p += nline - linebuffer; |
670 | linebuffer = nline; |
671 | } |
672 | p1 = rl; |
673 | /* Copy line. Don't copy null at end. (Leaves line alone |
674 | if this was just a newline) */ |
675 | while (*p1) |
676 | *p++ = *p1++; |
677 | |
678 | xfree (rl); /* Allocated in readline. */ |
679 | |
680 | if (p > linebuffer && *(p - 1) == '\\') |
681 | { |
682 | p--; /* Put on top of '\'. */ |
683 | |
684 | readline_input_state.linebuffer = savestring (linebuffer, |
685 | strlen (linebuffer)); |
686 | readline_input_state.linebuffer_ptr = p; |
687 | |
688 | /* We will not invoke a execute_command if there is more |
689 | input expected to complete the command. So, we need to |
690 | print an empty prompt here. */ |
691 | more_to_come = 1; |
692 | push_prompt ("", "", ""); |
693 | display_gdb_prompt (0); |
694 | return; |
695 | } |
696 | |
697 | #ifdef STOP_SIGNAL18 |
698 | if (job_control) |
699 | signal (STOP_SIGNAL18, SIG_DFL(void (*)(int))0); |
700 | #endif |
701 | |
702 | #define SERVER_COMMAND_LENGTH7 7 |
703 | server_command = |
704 | (p - linebuffer > SERVER_COMMAND_LENGTH7) |
705 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH7) == 0; |
706 | if (server_command) |
707 | { |
708 | /* Note that we don't set `line'. Between this and the check in |
709 | dont_repeat, this insures that repeating will still do the |
710 | right thing. */ |
711 | *p = '\0'; |
712 | command_handler (linebuffer + SERVER_COMMAND_LENGTH7); |
713 | display_gdb_prompt (0); |
714 | return; |
715 | } |
716 | |
717 | /* Do history expansion if that is wished. */ |
718 | if (history_expansion_p && instream == stdin(&__sF[0]) |
719 | && ISATTY (instream)(isatty ((!__isthreaded ? ((instream)->_file) : (fileno)(instream ))))) |
720 | { |
721 | char *history_value; |
722 | int expanded; |
723 | |
724 | *p = '\0'; /* Insert null now. */ |
725 | expanded = history_expand (linebuffer, &history_value); |
726 | if (expanded) |
727 | { |
728 | /* Print the changes. */ |
729 | printf_unfiltered ("%s\n", history_value); |
730 | |
731 | /* If there was an error, call this function again. */ |
732 | if (expanded < 0) |
733 | { |
734 | xfree (history_value); |
735 | return; |
736 | } |
737 | if (strlen (history_value) > linelength) |
738 | { |
739 | linelength = strlen (history_value) + 1; |
740 | linebuffer = (char *) xrealloc (linebuffer, linelength); |
741 | } |
742 | strcpy (linebuffer, history_value); |
743 | p = linebuffer + strlen (linebuffer); |
744 | xfree (history_value); |
745 | } |
746 | } |
747 | |
748 | /* If we just got an empty line, and that is supposed |
749 | to repeat the previous command, return the value in the |
750 | global buffer. */ |
751 | if (repeat && p == linebuffer && *p != '\\') |
752 | { |
753 | command_handler (line); |
754 | display_gdb_prompt (0); |
755 | return; |
756 | } |
757 | |
758 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); |
759 | if (repeat && !*p1) |
760 | { |
761 | command_handler (line); |
762 | display_gdb_prompt (0); |
763 | return; |
764 | } |
765 | |
766 | *p = 0; |
767 | |
768 | /* Add line to history if appropriate. */ |
769 | if (instream == stdin(&__sF[0]) |
770 | && ISATTY (stdin)(isatty ((!__isthreaded ? (((&__sF[0]))->_file) : (fileno )((&__sF[0]))))) && *linebuffer) |
771 | add_history (linebuffer); |
772 | |
773 | /* Note: lines consisting solely of comments are added to the command |
774 | history. This is useful when you type a command, and then |
775 | realize you don't want to execute it quite yet. You can comment |
776 | out the command and then later fetch it from the value history |
777 | and remove the '#'. The kill ring is probably better, but some |
778 | people are in the habit of commenting things out. */ |
779 | if (*p1 == '#') |
780 | *p1 = '\0'; /* Found a comment. */ |
781 | |
782 | /* Save into global buffer if appropriate. */ |
783 | if (repeat) |
784 | { |
785 | if (linelength > linesize) |
786 | { |
787 | line = xrealloc (line, linelength); |
788 | linesize = linelength; |
789 | } |
790 | strcpy (line, linebuffer); |
791 | if (!more_to_come) |
792 | { |
793 | command_handler (line); |
794 | display_gdb_prompt (0); |
795 | } |
796 | return; |
797 | } |
798 | |
799 | command_handler (linebuffer); |
800 | display_gdb_prompt (0); |
801 | return; |
802 | } |
803 | |
804 | /* Does reading of input from terminal w/o the editing features |
805 | provided by the readline library. */ |
806 | |
807 | /* NOTE: 1999-04-30 Asynchronous version of gdb_readline. gdb_readline |
808 | will become obsolete when the event loop is made the default |
809 | execution for gdb. */ |
810 | void |
811 | gdb_readline2 (gdb_client_data client_data) |
812 | { |
813 | int c; |
814 | char *result; |
815 | int input_index = 0; |
816 | int result_size = 80; |
817 | static int done_once = 0; |
818 | |
819 | /* Unbuffer the input stream, so that, later on, the calls to fgetc |
820 | fetch only one char at the time from the stream. The fgetc's will |
821 | get up to the first newline, but there may be more chars in the |
822 | stream after '\n'. If we buffer the input and fgetc drains the |
823 | stream, getting stuff beyond the newline as well, a select, done |
824 | afterwards will not trigger. */ |
825 | if (!done_once && !ISATTY (instream)(isatty ((!__isthreaded ? ((instream)->_file) : (fileno)(instream ))))) |
826 | { |
827 | setbuf (instream, NULL((void*)0)); |
828 | done_once = 1; |
829 | } |
830 | |
831 | result = (char *) xmalloc (result_size); |
832 | |
833 | /* We still need the while loop here, even though it would seem |
834 | obvious to invoke gdb_readline2 at every character entered. If |
835 | not using the readline library, the terminal is in cooked mode, |
836 | which sends the characters all at once. Poll will notice that the |
837 | input fd has changed state only after enter is pressed. At this |
838 | point we still need to fetch all the chars entered. */ |
839 | |
840 | while (1) |
841 | { |
842 | /* Read from stdin if we are executing a user defined command. |
843 | This is the right thing for prompt_for_continue, at least. */ |
844 | c = fgetc (instream ? instream : stdin(&__sF[0])); |
845 | |
846 | if (c == EOF(-1)) |
847 | { |
848 | if (input_index > 0) |
849 | /* The last line does not end with a newline. Return it, and |
850 | if we are called again fgetc will still return EOF and |
851 | we'll return NULL then. */ |
852 | break; |
853 | xfree (result); |
854 | (*input_handler) (0); |
855 | } |
856 | |
857 | if (c == '\n') |
858 | { |
859 | if (input_index > 0 && result[input_index - 1] == '\r') |
860 | input_index--; |
861 | break; |
862 | } |
863 | |
864 | result[input_index++] = c; |
865 | while (input_index >= result_size) |
866 | { |
867 | result_size *= 2; |
868 | result = (char *) xrealloc (result, result_size); |
869 | } |
870 | } |
871 | |
872 | result[input_index++] = '\0'; |
873 | (*input_handler) (result); |
874 | } |
875 | |
876 | |
877 | /* Initialization of signal handlers and tokens. There is a function |
878 | handle_sig* for each of the signals GDB cares about. Specifically: |
879 | SIGINT, SIGFPE, SIGQUIT, SIGTSTP, SIGHUP, SIGWINCH. These |
880 | functions are the actual signal handlers associated to the signals |
881 | via calls to signal(). The only job for these functions is to |
882 | enqueue the appropriate event/procedure with the event loop. Such |
883 | procedures are the old signal handlers. The event loop will take |
884 | care of invoking the queued procedures to perform the usual tasks |
885 | associated with the reception of the signal. */ |
886 | /* NOTE: 1999-04-30 This is the asynchronous version of init_signals. |
887 | init_signals will become obsolete as we move to have to event loop |
888 | as the default for gdb. */ |
889 | void |
890 | async_init_signals (void) |
891 | { |
892 | signal (SIGINT2, handle_sigint); |
893 | sigint_token = |
894 | create_async_signal_handler (async_request_quit, NULL((void*)0)); |
895 | |
896 | /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed |
897 | to the inferior and breakpoints will be ignored. */ |
898 | #ifdef SIGTRAP5 |
899 | signal (SIGTRAP5, SIG_DFL(void (*)(int))0); |
900 | #endif |
901 | |
902 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get |
903 | passed to the inferior, which we don't want. It would be |
904 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but |
905 | on BSD4.3 systems using vfork, that can affect the |
906 | GDB process as well as the inferior (the signal handling tables |
907 | might be in memory, shared between the two). Since we establish |
908 | a handler for SIGQUIT, when we call exec it will set the signal |
909 | to SIG_DFL for us. */ |
910 | signal (SIGQUIT3, handle_sigquit); |
911 | sigquit_token = |
912 | create_async_signal_handler (async_do_nothing, NULL((void*)0)); |
913 | #ifdef SIGHUP1 |
914 | if (signal (SIGHUP1, handle_sighup) != SIG_IGN(void (*)(int))1) |
915 | sighup_token = |
916 | create_async_signal_handler (async_disconnect, NULL((void*)0)); |
917 | else |
918 | sighup_token = |
919 | create_async_signal_handler (async_do_nothing, NULL((void*)0)); |
920 | #endif |
921 | signal (SIGFPE8, handle_sigfpe); |
922 | sigfpe_token = |
923 | create_async_signal_handler (async_float_handler, NULL((void*)0)); |
924 | |
925 | #if defined(SIGWINCH28) && defined(SIGWINCH_HANDLER) |
926 | signal (SIGWINCH28, handle_sigwinch); |
927 | sigwinch_token = |
928 | create_async_signal_handler (SIGWINCH_HANDLER, NULL((void*)0)); |
929 | #endif |
930 | #ifdef STOP_SIGNAL18 |
931 | sigtstp_token = |
932 | create_async_signal_handler (async_stop_sig, NULL((void*)0)); |
933 | #endif |
934 | |
935 | } |
936 | |
937 | void |
938 | mark_async_signal_handler_wrapper (void *token) |
939 | { |
940 | mark_async_signal_handler ((struct async_signal_handler *) token); |
941 | } |
942 | |
943 | /* Tell the event loop what to do if SIGINT is received. |
944 | See event-signal.c. */ |
945 | void |
946 | handle_sigint (int sig) |
947 | { |
948 | signal (sig, handle_sigint); |
949 | |
950 | /* If immediate_quit is set, we go ahead and process the SIGINT right |
951 | away, even if we usually would defer this to the event loop. The |
952 | assumption here is that it is safe to process ^C immediately if |
953 | immediate_quit is set. If we didn't, SIGINT would be really |
954 | processed only the next time through the event loop. To get to |
955 | that point, though, the command that we want to interrupt needs to |
956 | finish first, which is unacceptable. */ |
957 | if (immediate_quit) |
958 | async_request_quit (0); |
959 | else |
960 | /* If immediate quit is not set, we process SIGINT the next time |
961 | through the loop, which is fine. */ |
962 | mark_async_signal_handler_wrapper (sigint_token); |
963 | } |
964 | |
965 | /* Do the quit. All the checks have been done by the caller. */ |
966 | void |
967 | async_request_quit (gdb_client_data arg) |
968 | { |
969 | quit_flag = 1; |
970 | quit (); |
971 | } |
972 | |
973 | /* Tell the event loop what to do if SIGQUIT is received. |
974 | See event-signal.c. */ |
975 | static void |
976 | handle_sigquit (int sig) |
977 | { |
978 | mark_async_signal_handler_wrapper (sigquit_token); |
979 | signal (sig, handle_sigquit); |
980 | } |
981 | |
982 | /* Called by the event loop in response to a SIGQUIT. */ |
983 | static void |
984 | async_do_nothing (gdb_client_data arg) |
985 | { |
986 | /* Empty function body. */ |
987 | } |
988 | |
989 | #ifdef SIGHUP1 |
990 | /* Tell the event loop what to do if SIGHUP is received. |
991 | See event-signal.c. */ |
992 | static void |
993 | handle_sighup (int sig) |
994 | { |
995 | mark_async_signal_handler_wrapper (sighup_token); |
996 | signal (sig, handle_sighup); |
997 | } |
998 | |
999 | /* Called by the event loop to process a SIGHUP */ |
1000 | static void |
1001 | async_disconnect (gdb_client_data arg) |
1002 | { |
1003 | catch_errors (quit_cover, NULL((void*)0), |
1004 | "Could not kill the program being debugged", |
1005 | RETURN_MASK_ALL((1 << (int)(-RETURN_QUIT)) | (1 << (int)(-RETURN_ERROR )))); |
1006 | signal (SIGHUP1, SIG_DFL(void (*)(int))0); /*FIXME: ??????????? */ |
1007 | kill (getpid (), SIGHUP1); |
1008 | } |
1009 | #endif |
1010 | |
1011 | #ifdef STOP_SIGNAL18 |
1012 | void |
1013 | handle_stop_sig (int sig) |
1014 | { |
1015 | mark_async_signal_handler_wrapper (sigtstp_token); |
1016 | signal (sig, handle_stop_sig); |
1017 | } |
1018 | |
1019 | static void |
1020 | async_stop_sig (gdb_client_data arg) |
1021 | { |
1022 | char *prompt = get_prompt (); |
1023 | #if STOP_SIGNAL18 == SIGTSTP18 |
1024 | signal (SIGTSTP18, SIG_DFL(void (*)(int))0); |
1025 | #if HAVE_SIGPROCMASK1 |
1026 | { |
1027 | sigset_t zero; |
1028 | |
1029 | sigemptyset (&zero); |
1030 | sigprocmask (SIG_SETMASK3, &zero, 0); |
1031 | } |
1032 | #elif HAVE_SIGSETMASK1 |
1033 | sigsetmask (0); |
1034 | #endif |
1035 | kill (getpid (), SIGTSTP18); |
1036 | signal (SIGTSTP18, handle_stop_sig); |
1037 | #else |
1038 | signal (STOP_SIGNAL18, handle_stop_sig); |
1039 | #endif |
1040 | printf_unfiltered ("%s", prompt); |
1041 | gdb_flush (gdb_stdout); |
1042 | |
1043 | /* Forget about any previous command -- null line now will do nothing. */ |
1044 | dont_repeat (); |
1045 | } |
1046 | #endif /* STOP_SIGNAL */ |
1047 | |
1048 | /* Tell the event loop what to do if SIGFPE is received. |
1049 | See event-signal.c. */ |
1050 | static void |
1051 | handle_sigfpe (int sig) |
1052 | { |
1053 | mark_async_signal_handler_wrapper (sigfpe_token); |
1054 | signal (sig, handle_sigfpe); |
1055 | } |
1056 | |
1057 | /* Event loop will call this functin to process a SIGFPE. */ |
1058 | static void |
1059 | async_float_handler (gdb_client_data arg) |
1060 | { |
1061 | /* This message is based on ANSI C, section 4.7. Note that integer |
1062 | divide by zero causes this, so "float" is a misnomer. */ |
1063 | error ("Erroneous arithmetic operation."); |
1064 | } |
1065 | |
1066 | /* Tell the event loop what to do if SIGWINCH is received. |
1067 | See event-signal.c. */ |
1068 | #if defined(SIGWINCH28) && defined(SIGWINCH_HANDLER) |
1069 | static void |
1070 | handle_sigwinch (int sig) |
1071 | { |
1072 | mark_async_signal_handler_wrapper (sigwinch_token); |
1073 | signal (sig, handle_sigwinch); |
1074 | } |
1075 | #endif |
1076 | |
1077 | |
1078 | /* Called by do_setshow_command. */ |
1079 | void |
1080 | set_async_editing_command (char *args, int from_tty, struct cmd_list_element *c) |
1081 | { |
1082 | change_line_handler (); |
1083 | } |
1084 | |
1085 | /* Called by do_setshow_command. */ |
1086 | void |
1087 | set_async_annotation_level (char *args, int from_tty, struct cmd_list_element *c) |
1088 | { |
1089 | change_annotation_level (); |
1090 | } |
1091 | |
1092 | /* Called by do_setshow_command. */ |
1093 | void |
1094 | set_async_prompt (char *args, int from_tty, struct cmd_list_element *c) |
1095 | { |
1096 | PROMPT (0)the_prompts.prompt_stack[the_prompts.top + 0].prompt = savestring (new_async_prompt, strlen (new_async_prompt)); |
1097 | } |
1098 | |
1099 | /* Set things up for readline to be invoked via the alternate |
1100 | interface, i.e. via a callback function (rl_callback_read_char), |
1101 | and hook up instream to the event loop. */ |
1102 | void |
1103 | gdb_setup_readline (void) |
1104 | { |
1105 | /* This function is a noop for the sync case. The assumption is |
1106 | that the sync setup is ALL done in gdb_init, and we would only |
1107 | mess it up here. The sync stuff should really go away over |
1108 | time. */ |
1109 | |
1110 | gdb_stdout = stdio_fileopen (stdout(&__sF[1])); |
1111 | gdb_stderr = stdio_fileopen (stderr(&__sF[2])); |
1112 | gdb_stdlog = gdb_stderr; /* for moment */ |
1113 | gdb_stdtarg = gdb_stderr; /* for moment */ |
1114 | |
1115 | /* If the input stream is connected to a terminal, turn on |
1116 | editing. */ |
1117 | if (ISATTY (instream)(isatty ((!__isthreaded ? ((instream)->_file) : (fileno)(instream ))))) |
1118 | { |
1119 | /* Tell gdb that we will be using the readline library. This |
1120 | could be overwritten by a command in .gdbinit like 'set |
1121 | editing on' or 'off'. */ |
1122 | async_command_editing_p = 1; |
1123 | |
1124 | /* When a character is detected on instream by select or poll, |
1125 | readline will be invoked via this callback function. */ |
1126 | call_readline = rl_callback_read_char_wrapper; |
1127 | } |
1128 | else |
1129 | { |
1130 | async_command_editing_p = 0; |
1131 | call_readline = gdb_readline2; |
1132 | } |
1133 | |
1134 | /* When readline has read an end-of-line character, it passes the |
1135 | complete line to gdb for processing. command_line_handler is the |
1136 | function that does this. */ |
1137 | input_handler = command_line_handler; |
1138 | |
1139 | /* Tell readline to use the same input stream that gdb uses. */ |
1140 | rl_instream = instream; |
1141 | |
1142 | /* Get a file descriptor for the input stream, so that we can |
1143 | register it with the event loop. */ |
1144 | input_fd = fileno (instream)(!__isthreaded ? ((instream)->_file) : (fileno)(instream)); |
1145 | |
1146 | /* Now we need to create the event sources for the input file |
1147 | descriptor. */ |
1148 | /* At this point in time, this is the only event source that we |
1149 | register with the even loop. Another source is going to be the |
1150 | target program (inferior), but that must be registered only when |
1151 | it actually exists (I.e. after we say 'run' or after we connect |
1152 | to a remote target. */ |
1153 | add_file_handler (input_fd, stdin_event_handler, 0); |
1154 | } |
1155 | |
1156 | /* Disable command input through the standard CLI channels. Used in |
1157 | the suspend proc for interpreters that use the standard gdb readline |
1158 | interface, like the cli & the mi. */ |
1159 | void |
1160 | gdb_disable_readline (void) |
1161 | { |
1162 | /* FIXME - It is too heavyweight to delete and remake these every |
1163 | time you run an interpreter that needs readline. It is probably |
1164 | better to have the interpreters cache these, which in turn means |
1165 | that this needs to be moved into interpreter specific code. */ |
1166 | |
1167 | #if 0 |
1168 | ui_file_delete (gdb_stdout); |
1169 | ui_file_delete (gdb_stderr); |
1170 | gdb_stdlog = NULL((void*)0); |
1171 | gdb_stdtarg = NULL((void*)0); |
1172 | #endif |
1173 | |
1174 | rl_callback_handler_remove (); |
1175 | delete_file_handler (input_fd); |
1176 | } |