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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
618f726f | 3 | Copyright (C) 2008-2016 Free Software Foundation, Inc. |
b77209e0 PA |
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 3 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, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
6c95b8df | 21 | #include "exec.h" |
b77209e0 PA |
22 | #include "inferior.h" |
23 | #include "target.h" | |
24 | #include "command.h" | |
06da564e | 25 | #include "completer.h" |
b77209e0 PA |
26 | #include "gdbcmd.h" |
27 | #include "gdbthread.h" | |
28 | #include "ui-out.h" | |
4a92f99b | 29 | #include "observer.h" |
6c95b8df PA |
30 | #include "gdbcore.h" |
31 | #include "symfile.h" | |
3f81c18a | 32 | #include "environ.h" |
c82c0b55 | 33 | #include "cli/cli-utils.h" |
be34f849 | 34 | #include "continuations.h" |
6ecd4729 PA |
35 | #include "arch-utils.h" |
36 | #include "target-descriptions.h" | |
47902076 | 37 | #include "readline/tilde.h" |
b77209e0 PA |
38 | |
39 | void _initialize_inferiors (void); | |
40 | ||
8e260fc0 TT |
41 | /* Keep a registry of per-inferior data-pointers required by other GDB |
42 | modules. */ | |
43 | ||
6b81941e | 44 | DEFINE_REGISTRY (inferior, REGISTRY_ACCESS_FIELD) |
6c95b8df PA |
45 | |
46 | struct inferior *inferior_list = NULL; | |
b77209e0 PA |
47 | static int highest_inferior_num; |
48 | ||
49 | /* Print notices on inferior events (attach, detach, etc.), set with | |
50 | `set print inferior-events'. */ | |
51 | static int print_inferior_events = 0; | |
52 | ||
6c95b8df PA |
53 | /* The Current Inferior. */ |
54 | static struct inferior *current_inferior_ = NULL; | |
55 | ||
b77209e0 PA |
56 | struct inferior* |
57 | current_inferior (void) | |
58 | { | |
6c95b8df PA |
59 | return current_inferior_; |
60 | } | |
61 | ||
62 | void | |
63 | set_current_inferior (struct inferior *inf) | |
64 | { | |
65 | /* There's always an inferior. */ | |
66 | gdb_assert (inf != NULL); | |
67 | ||
68 | current_inferior_ = inf; | |
69 | } | |
70 | ||
71 | /* A cleanups callback, helper for save_current_program_space | |
72 | below. */ | |
73 | ||
74 | static void | |
75 | restore_inferior (void *arg) | |
76 | { | |
9a3c8263 | 77 | struct inferior *saved_inferior = (struct inferior *) arg; |
abbb1732 | 78 | |
6c95b8df PA |
79 | set_current_inferior (saved_inferior); |
80 | } | |
81 | ||
82 | /* Save the current program space so that it may be restored by a later | |
83 | call to do_cleanups. Returns the struct cleanup pointer needed for | |
84 | later doing the cleanup. */ | |
85 | ||
86 | struct cleanup * | |
87 | save_current_inferior (void) | |
88 | { | |
89 | struct cleanup *old_chain = make_cleanup (restore_inferior, | |
90 | current_inferior_); | |
abbb1732 | 91 | |
6c95b8df | 92 | return old_chain; |
b77209e0 PA |
93 | } |
94 | ||
95 | static void | |
96 | free_inferior (struct inferior *inf) | |
97 | { | |
e0ba6746 | 98 | discard_all_inferior_continuations (inf); |
6c95b8df | 99 | inferior_free_data (inf); |
3f81c18a VP |
100 | xfree (inf->args); |
101 | xfree (inf->terminal); | |
102 | free_environ (inf->environment); | |
6ecd4729 | 103 | target_desc_info_free (inf->tdesc_info); |
fe978cb0 | 104 | xfree (inf->priv); |
b77209e0 PA |
105 | xfree (inf); |
106 | } | |
107 | ||
108 | void | |
109 | init_inferior_list (void) | |
110 | { | |
111 | struct inferior *inf, *infnext; | |
112 | ||
113 | highest_inferior_num = 0; | |
114 | if (!inferior_list) | |
115 | return; | |
116 | ||
117 | for (inf = inferior_list; inf; inf = infnext) | |
118 | { | |
119 | infnext = inf->next; | |
120 | free_inferior (inf); | |
121 | } | |
122 | ||
123 | inferior_list = NULL; | |
124 | } | |
125 | ||
126 | struct inferior * | |
127 | add_inferior_silent (int pid) | |
128 | { | |
129 | struct inferior *inf; | |
130 | ||
8d749320 | 131 | inf = XNEW (struct inferior); |
b77209e0 PA |
132 | memset (inf, 0, sizeof (*inf)); |
133 | inf->pid = pid; | |
134 | ||
16c381f0 | 135 | inf->control.stop_soon = NO_STOP_QUIETLY; |
d6b48e9c | 136 | |
b77209e0 | 137 | inf->num = ++highest_inferior_num; |
b05b1202 PA |
138 | |
139 | if (inferior_list == NULL) | |
140 | inferior_list = inf; | |
141 | else | |
142 | { | |
143 | struct inferior *last; | |
144 | ||
145 | for (last = inferior_list; last->next != NULL; last = last->next) | |
146 | ; | |
147 | last->next = inf; | |
148 | } | |
b77209e0 | 149 | |
3f81c18a VP |
150 | inf->environment = make_environ (); |
151 | init_environ (inf->environment); | |
152 | ||
6c95b8df PA |
153 | inferior_alloc_data (inf); |
154 | ||
a79b8f6e VP |
155 | observer_notify_inferior_added (inf); |
156 | ||
6c95b8df PA |
157 | if (pid != 0) |
158 | inferior_appeared (inf, pid); | |
a562dc8f | 159 | |
b77209e0 PA |
160 | return inf; |
161 | } | |
162 | ||
163 | struct inferior * | |
164 | add_inferior (int pid) | |
165 | { | |
166 | struct inferior *inf = add_inferior_silent (pid); | |
167 | ||
168 | if (print_inferior_events) | |
169 | printf_unfiltered (_("[New inferior %d]\n"), pid); | |
170 | ||
171 | return inf; | |
172 | } | |
173 | ||
174 | struct delete_thread_of_inferior_arg | |
175 | { | |
176 | int pid; | |
177 | int silent; | |
178 | }; | |
179 | ||
180 | static int | |
181 | delete_thread_of_inferior (struct thread_info *tp, void *data) | |
182 | { | |
9a3c8263 SM |
183 | struct delete_thread_of_inferior_arg *arg |
184 | = (struct delete_thread_of_inferior_arg *) data; | |
b77209e0 PA |
185 | |
186 | if (ptid_get_pid (tp->ptid) == arg->pid) | |
187 | { | |
188 | if (arg->silent) | |
189 | delete_thread_silent (tp->ptid); | |
190 | else | |
191 | delete_thread (tp->ptid); | |
192 | } | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
a79b8f6e | 197 | void |
7a41607e | 198 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
199 | { |
200 | struct inferior *inf, *infprev; | |
6c95b8df | 201 | struct delete_thread_of_inferior_arg arg; |
b77209e0 PA |
202 | |
203 | infprev = NULL; | |
204 | ||
205 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 206 | if (inf == todel) |
b77209e0 PA |
207 | break; |
208 | ||
209 | if (!inf) | |
210 | return; | |
211 | ||
6c95b8df | 212 | arg.pid = inf->pid; |
7a41607e | 213 | arg.silent = 1; |
b77209e0 PA |
214 | |
215 | iterate_over_threads (delete_thread_of_inferior, &arg); | |
4a92f99b | 216 | |
7e1789f5 PA |
217 | if (infprev) |
218 | infprev->next = inf->next; | |
219 | else | |
220 | inferior_list = inf->next; | |
221 | ||
a79b8f6e VP |
222 | observer_notify_inferior_removed (inf); |
223 | ||
7a41607e SM |
224 | /* If this program space is rendered useless, remove it. */ |
225 | if (program_space_empty_p (inf->pspace)) | |
226 | delete_program_space (inf->pspace); | |
ef3f321b | 227 | |
7a41607e | 228 | free_inferior (inf); |
ef3f321b SM |
229 | } |
230 | ||
6c95b8df PA |
231 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
232 | exit of its threads. */ | |
233 | ||
234 | static void | |
235 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
236 | { | |
237 | struct inferior *inf; | |
238 | struct delete_thread_of_inferior_arg arg; | |
239 | ||
240 | for (inf = inferior_list; inf; inf = inf->next) | |
241 | if (inf == inftoex) | |
242 | break; | |
243 | ||
244 | if (!inf) | |
245 | return; | |
246 | ||
247 | arg.pid = inf->pid; | |
248 | arg.silent = silent; | |
249 | ||
250 | iterate_over_threads (delete_thread_of_inferior, &arg); | |
251 | ||
252 | /* Notify the observers before removing the inferior from the list, | |
253 | so that the observers have a chance to look it up. */ | |
a79b8f6e | 254 | observer_notify_inferior_exit (inf); |
6c95b8df PA |
255 | |
256 | inf->pid = 0; | |
e714e1bf | 257 | inf->fake_pid_p = 0; |
6c95b8df PA |
258 | if (inf->vfork_parent != NULL) |
259 | { | |
260 | inf->vfork_parent->vfork_child = NULL; | |
261 | inf->vfork_parent = NULL; | |
262 | } | |
68c9da30 PA |
263 | if (inf->vfork_child != NULL) |
264 | { | |
265 | inf->vfork_child->vfork_parent = NULL; | |
266 | inf->vfork_child = NULL; | |
267 | } | |
8cf64490 | 268 | |
68c9da30 | 269 | inf->pending_detach = 0; |
6c95b8df PA |
270 | } |
271 | ||
272 | void | |
273 | exit_inferior (int pid) | |
274 | { | |
275 | struct inferior *inf = find_inferior_pid (pid); | |
abbb1732 | 276 | |
6c95b8df PA |
277 | exit_inferior_1 (inf, 0); |
278 | ||
279 | if (print_inferior_events) | |
280 | printf_unfiltered (_("[Inferior %d exited]\n"), pid); | |
281 | } | |
282 | ||
283 | void | |
284 | exit_inferior_silent (int pid) | |
285 | { | |
286 | struct inferior *inf = find_inferior_pid (pid); | |
abbb1732 | 287 | |
6c95b8df PA |
288 | exit_inferior_1 (inf, 1); |
289 | } | |
290 | ||
291 | void | |
292 | exit_inferior_num_silent (int num) | |
293 | { | |
294 | struct inferior *inf = find_inferior_id (num); | |
295 | ||
296 | exit_inferior_1 (inf, 1); | |
b77209e0 PA |
297 | } |
298 | ||
299 | void | |
300 | detach_inferior (int pid) | |
301 | { | |
6c95b8df | 302 | struct inferior *inf = find_inferior_pid (pid); |
abbb1732 | 303 | |
3b462ec2 | 304 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
305 | |
306 | if (print_inferior_events) | |
307 | printf_unfiltered (_("[Inferior %d detached]\n"), pid); | |
308 | } | |
309 | ||
6c95b8df PA |
310 | void |
311 | inferior_appeared (struct inferior *inf, int pid) | |
312 | { | |
313 | inf->pid = pid; | |
2ddf4301 SM |
314 | inf->has_exit_code = 0; |
315 | inf->exit_code = 0; | |
6c95b8df | 316 | |
a79b8f6e | 317 | observer_notify_inferior_appeared (inf); |
6c95b8df PA |
318 | } |
319 | ||
82f73884 PA |
320 | void |
321 | discard_all_inferiors (void) | |
322 | { | |
6c95b8df | 323 | struct inferior *inf; |
82f73884 | 324 | |
6c95b8df | 325 | for (inf = inferior_list; inf; inf = inf->next) |
82f73884 | 326 | { |
6c95b8df PA |
327 | if (inf->pid != 0) |
328 | exit_inferior_silent (inf->pid); | |
82f73884 PA |
329 | } |
330 | } | |
331 | ||
6c95b8df | 332 | struct inferior * |
b77209e0 PA |
333 | find_inferior_id (int num) |
334 | { | |
335 | struct inferior *inf; | |
336 | ||
337 | for (inf = inferior_list; inf; inf = inf->next) | |
338 | if (inf->num == num) | |
339 | return inf; | |
340 | ||
341 | return NULL; | |
342 | } | |
343 | ||
344 | struct inferior * | |
345 | find_inferior_pid (int pid) | |
346 | { | |
347 | struct inferior *inf; | |
348 | ||
6c95b8df PA |
349 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
350 | a bug somewhere else. There may be more than one with pid == 0, | |
351 | for instance. */ | |
352 | gdb_assert (pid != 0); | |
353 | ||
b77209e0 PA |
354 | for (inf = inferior_list; inf; inf = inf->next) |
355 | if (inf->pid == pid) | |
356 | return inf; | |
357 | ||
358 | return NULL; | |
359 | } | |
360 | ||
c9657e70 SM |
361 | /* See inferior.h */ |
362 | ||
363 | struct inferior * | |
364 | find_inferior_ptid (ptid_t ptid) | |
365 | { | |
366 | return find_inferior_pid (ptid_get_pid (ptid)); | |
367 | } | |
368 | ||
32990ada | 369 | /* See inferior.h. */ |
6c95b8df PA |
370 | |
371 | struct inferior * | |
372 | find_inferior_for_program_space (struct program_space *pspace) | |
373 | { | |
32990ada PA |
374 | struct inferior *inf = current_inferior (); |
375 | ||
376 | if (inf->pspace == pspace) | |
377 | return inf; | |
6c95b8df PA |
378 | |
379 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
380 | { | |
381 | if (inf->pspace == pspace) | |
382 | return inf; | |
383 | } | |
384 | ||
385 | return NULL; | |
386 | } | |
387 | ||
b77209e0 PA |
388 | struct inferior * |
389 | iterate_over_inferiors (int (*callback) (struct inferior *, void *), | |
390 | void *data) | |
391 | { | |
392 | struct inferior *inf, *infnext; | |
393 | ||
394 | for (inf = inferior_list; inf; inf = infnext) | |
395 | { | |
396 | infnext = inf->next; | |
397 | if ((*callback) (inf, data)) | |
398 | return inf; | |
399 | } | |
400 | ||
401 | return NULL; | |
402 | } | |
403 | ||
404 | int | |
405 | valid_gdb_inferior_id (int num) | |
406 | { | |
407 | struct inferior *inf; | |
408 | ||
409 | for (inf = inferior_list; inf; inf = inf->next) | |
410 | if (inf->num == num) | |
411 | return 1; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | int | |
417 | pid_to_gdb_inferior_id (int pid) | |
418 | { | |
419 | struct inferior *inf; | |
420 | ||
421 | for (inf = inferior_list; inf; inf = inf->next) | |
422 | if (inf->pid == pid) | |
423 | return inf->num; | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | int | |
429 | gdb_inferior_id_to_pid (int num) | |
430 | { | |
431 | struct inferior *inferior = find_inferior_id (num); | |
432 | if (inferior) | |
433 | return inferior->pid; | |
434 | else | |
435 | return -1; | |
436 | } | |
437 | ||
438 | int | |
439 | in_inferior_list (int pid) | |
440 | { | |
441 | struct inferior *inf; | |
442 | ||
443 | for (inf = inferior_list; inf; inf = inf->next) | |
444 | if (inf->pid == pid) | |
445 | return 1; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | int | |
451 | have_inferiors (void) | |
452 | { | |
6c95b8df PA |
453 | struct inferior *inf; |
454 | ||
455 | for (inf = inferior_list; inf; inf = inf->next) | |
456 | if (inf->pid != 0) | |
457 | return 1; | |
458 | ||
459 | return 0; | |
b77209e0 PA |
460 | } |
461 | ||
8020350c DB |
462 | /* Return the number of live inferiors. We account for the case |
463 | where an inferior might have a non-zero pid but no threads, as | |
464 | in the middle of a 'mourn' operation. */ | |
465 | ||
c35b1492 | 466 | int |
8020350c | 467 | number_of_live_inferiors (void) |
c35b1492 | 468 | { |
cd2effb2 | 469 | struct inferior *inf; |
8020350c | 470 | int num_inf = 0; |
6c95b8df | 471 | |
cd2effb2 JK |
472 | for (inf = inferior_list; inf; inf = inf->next) |
473 | if (inf->pid != 0) | |
474 | { | |
475 | struct thread_info *tp; | |
8020350c DB |
476 | |
477 | ALL_NON_EXITED_THREADS (tp) | |
478 | if (tp && ptid_get_pid (tp->ptid) == inf->pid) | |
479 | if (target_has_execution_1 (tp->ptid)) | |
480 | { | |
481 | /* Found a live thread in this inferior, go to the next | |
482 | inferior. */ | |
483 | ++num_inf; | |
484 | break; | |
485 | } | |
cd2effb2 JK |
486 | } |
487 | ||
8020350c DB |
488 | return num_inf; |
489 | } | |
490 | ||
491 | /* Return true if there is at least one live inferior. */ | |
492 | ||
493 | int | |
494 | have_live_inferiors (void) | |
495 | { | |
496 | return number_of_live_inferiors () > 0; | |
6c95b8df PA |
497 | } |
498 | ||
bed8455c DE |
499 | /* Prune away any unused inferiors, and then prune away no longer used |
500 | program spaces. */ | |
6c95b8df PA |
501 | |
502 | void | |
503 | prune_inferiors (void) | |
504 | { | |
505 | struct inferior *ss, **ss_link; | |
506 | struct inferior *current = current_inferior (); | |
507 | ||
508 | ss = inferior_list; | |
509 | ss_link = &inferior_list; | |
510 | while (ss) | |
511 | { | |
512 | if (ss == current | |
513 | || !ss->removable | |
514 | || ss->pid != 0) | |
515 | { | |
516 | ss_link = &ss->next; | |
517 | ss = *ss_link; | |
518 | continue; | |
519 | } | |
520 | ||
521 | *ss_link = ss->next; | |
7a41607e | 522 | delete_inferior (ss); |
6c95b8df PA |
523 | ss = *ss_link; |
524 | } | |
6c95b8df PA |
525 | } |
526 | ||
527 | /* Simply returns the count of inferiors. */ | |
528 | ||
529 | int | |
530 | number_of_inferiors (void) | |
531 | { | |
532 | struct inferior *inf; | |
533 | int count = 0; | |
534 | ||
535 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
536 | count++; | |
537 | ||
538 | return count; | |
c35b1492 PA |
539 | } |
540 | ||
db2b9fdd PA |
541 | /* Converts an inferior process id to a string. Like |
542 | target_pid_to_str, but special cases the null process. */ | |
543 | ||
544 | static char * | |
545 | inferior_pid_to_str (int pid) | |
546 | { | |
547 | if (pid != 0) | |
548 | return target_pid_to_str (pid_to_ptid (pid)); | |
549 | else | |
550 | return _("<null>"); | |
551 | } | |
552 | ||
b77209e0 PA |
553 | /* Prints the list of inferiors and their details on UIOUT. This is a |
554 | version of 'info_inferior_command' suitable for use from MI. | |
555 | ||
c82c0b55 MS |
556 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
557 | inferiors that should be printed. Otherwise, all inferiors are | |
558 | printed. */ | |
559 | ||
560 | static void | |
561 | print_inferior (struct ui_out *uiout, char *requested_inferiors) | |
b77209e0 PA |
562 | { |
563 | struct inferior *inf; | |
564 | struct cleanup *old_chain; | |
8bb318c6 | 565 | int inf_count = 0; |
b77209e0 | 566 | |
8bb318c6 TT |
567 | /* Compute number of inferiors we will print. */ |
568 | for (inf = inferior_list; inf; inf = inf->next) | |
569 | { | |
c82c0b55 | 570 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
571 | continue; |
572 | ||
573 | ++inf_count; | |
574 | } | |
575 | ||
576 | if (inf_count == 0) | |
577 | { | |
578 | ui_out_message (uiout, 0, "No inferiors.\n"); | |
579 | return; | |
580 | } | |
581 | ||
6c95b8df | 582 | old_chain = make_cleanup_ui_out_table_begin_end (uiout, 4, inf_count, |
8bb318c6 | 583 | "inferiors"); |
3a1ff0b6 PA |
584 | ui_out_table_header (uiout, 1, ui_left, "current", ""); |
585 | ui_out_table_header (uiout, 4, ui_left, "number", "Num"); | |
586 | ui_out_table_header (uiout, 17, ui_left, "target-id", "Description"); | |
6c95b8df | 587 | ui_out_table_header (uiout, 17, ui_left, "exec", "Executable"); |
b77209e0 | 588 | |
6c95b8df | 589 | ui_out_table_body (uiout); |
b77209e0 PA |
590 | for (inf = inferior_list; inf; inf = inf->next) |
591 | { | |
592 | struct cleanup *chain2; | |
593 | ||
c82c0b55 | 594 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
595 | continue; |
596 | ||
597 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
598 | ||
6c95b8df | 599 | if (inf == current_inferior ()) |
8bb318c6 | 600 | ui_out_field_string (uiout, "current", "*"); |
b77209e0 | 601 | else |
8bb318c6 | 602 | ui_out_field_skip (uiout, "current"); |
b77209e0 | 603 | |
3a1ff0b6 | 604 | ui_out_field_int (uiout, "number", inf->num); |
6c95b8df | 605 | |
db2b9fdd PA |
606 | ui_out_field_string (uiout, "target-id", |
607 | inferior_pid_to_str (inf->pid)); | |
6c95b8df | 608 | |
1f0c4988 JK |
609 | if (inf->pspace->pspace_exec_filename != NULL) |
610 | ui_out_field_string (uiout, "exec", inf->pspace->pspace_exec_filename); | |
6c95b8df PA |
611 | else |
612 | ui_out_field_skip (uiout, "exec"); | |
613 | ||
614 | /* Print extra info that isn't really fit to always present in | |
615 | tabular form. Currently we print the vfork parent/child | |
616 | relationships, if any. */ | |
617 | if (inf->vfork_parent) | |
618 | { | |
619 | ui_out_text (uiout, _("\n\tis vfork child of inferior ")); | |
620 | ui_out_field_int (uiout, "vfork-parent", inf->vfork_parent->num); | |
621 | } | |
622 | if (inf->vfork_child) | |
623 | { | |
624 | ui_out_text (uiout, _("\n\tis vfork parent of inferior ")); | |
625 | ui_out_field_int (uiout, "vfork-child", inf->vfork_child->num); | |
626 | } | |
b77209e0 PA |
627 | |
628 | ui_out_text (uiout, "\n"); | |
629 | do_cleanups (chain2); | |
630 | } | |
631 | ||
632 | do_cleanups (old_chain); | |
633 | } | |
634 | ||
2277426b PA |
635 | static void |
636 | detach_inferior_command (char *args, int from_tty) | |
637 | { | |
638 | int num, pid; | |
639 | struct thread_info *tp; | |
197f0a60 | 640 | struct get_number_or_range_state state; |
2277426b PA |
641 | |
642 | if (!args || !*args) | |
af624141 | 643 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 644 | |
197f0a60 TT |
645 | init_number_or_range (&state, args); |
646 | while (!state.finished) | |
af624141 | 647 | { |
197f0a60 | 648 | num = get_number_or_range (&state); |
2277426b | 649 | |
af624141 MS |
650 | if (!valid_gdb_inferior_id (num)) |
651 | { | |
652 | warning (_("Inferior ID %d not known."), num); | |
653 | continue; | |
654 | } | |
2277426b | 655 | |
af624141 | 656 | pid = gdb_inferior_id_to_pid (num); |
e3ae3c43 PP |
657 | if (pid == 0) |
658 | { | |
659 | warning (_("Inferior ID %d is not running."), num); | |
660 | continue; | |
661 | } | |
2277426b | 662 | |
af624141 MS |
663 | tp = any_thread_of_process (pid); |
664 | if (!tp) | |
665 | { | |
666 | warning (_("Inferior ID %d has no threads."), num); | |
667 | continue; | |
668 | } | |
2277426b | 669 | |
af624141 | 670 | switch_to_thread (tp->ptid); |
2277426b | 671 | |
af624141 MS |
672 | detach_command (NULL, from_tty); |
673 | } | |
2277426b PA |
674 | } |
675 | ||
676 | static void | |
677 | kill_inferior_command (char *args, int from_tty) | |
678 | { | |
679 | int num, pid; | |
680 | struct thread_info *tp; | |
197f0a60 | 681 | struct get_number_or_range_state state; |
2277426b PA |
682 | |
683 | if (!args || !*args) | |
af624141 | 684 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 685 | |
197f0a60 TT |
686 | init_number_or_range (&state, args); |
687 | while (!state.finished) | |
af624141 | 688 | { |
197f0a60 | 689 | num = get_number_or_range (&state); |
2277426b | 690 | |
af624141 MS |
691 | if (!valid_gdb_inferior_id (num)) |
692 | { | |
693 | warning (_("Inferior ID %d not known."), num); | |
694 | continue; | |
695 | } | |
2277426b | 696 | |
af624141 | 697 | pid = gdb_inferior_id_to_pid (num); |
e3ae3c43 PP |
698 | if (pid == 0) |
699 | { | |
700 | warning (_("Inferior ID %d is not running."), num); | |
701 | continue; | |
702 | } | |
2277426b | 703 | |
af624141 MS |
704 | tp = any_thread_of_process (pid); |
705 | if (!tp) | |
706 | { | |
707 | warning (_("Inferior ID %d has no threads."), num); | |
708 | continue; | |
709 | } | |
2277426b | 710 | |
af624141 | 711 | switch_to_thread (tp->ptid); |
2277426b | 712 | |
af624141 MS |
713 | target_kill (); |
714 | } | |
2277426b PA |
715 | |
716 | bfd_cache_close_all (); | |
717 | } | |
718 | ||
719 | static void | |
720 | inferior_command (char *args, int from_tty) | |
721 | { | |
6c95b8df PA |
722 | struct inferior *inf; |
723 | int num; | |
2277426b PA |
724 | |
725 | num = parse_and_eval_long (args); | |
726 | ||
6c95b8df PA |
727 | inf = find_inferior_id (num); |
728 | if (inf == NULL) | |
2277426b PA |
729 | error (_("Inferior ID %d not known."), num); |
730 | ||
6c95b8df PA |
731 | printf_filtered (_("[Switching to inferior %d [%s] (%s)]\n"), |
732 | inf->num, | |
db2b9fdd | 733 | inferior_pid_to_str (inf->pid), |
1f0c4988 JK |
734 | (inf->pspace->pspace_exec_filename != NULL |
735 | ? inf->pspace->pspace_exec_filename | |
6c95b8df | 736 | : _("<noexec>"))); |
2277426b | 737 | |
6c95b8df | 738 | if (inf->pid != 0) |
2277426b | 739 | { |
6c95b8df PA |
740 | if (inf->pid != ptid_get_pid (inferior_ptid)) |
741 | { | |
742 | struct thread_info *tp; | |
2277426b | 743 | |
6c95b8df PA |
744 | tp = any_thread_of_process (inf->pid); |
745 | if (!tp) | |
746 | error (_("Inferior has no threads.")); | |
2277426b | 747 | |
6c95b8df PA |
748 | switch_to_thread (tp->ptid); |
749 | } | |
750 | ||
43792cf0 PA |
751 | printf_filtered (_("[Switching to thread %s (%s)] "), |
752 | print_thread_id (inferior_thread ()), | |
6c95b8df | 753 | target_pid_to_str (inferior_ptid)); |
2277426b | 754 | } |
6c95b8df PA |
755 | else |
756 | { | |
757 | struct inferior *inf; | |
2277426b | 758 | |
6c95b8df PA |
759 | inf = find_inferior_id (num); |
760 | set_current_inferior (inf); | |
761 | switch_to_thread (null_ptid); | |
762 | set_current_program_space (inf->pspace); | |
763 | } | |
2277426b | 764 | |
6c95b8df | 765 | if (inf->pid != 0 && is_running (inferior_ptid)) |
79a45e25 | 766 | ui_out_text (current_uiout, "(running)\n"); |
6c95b8df | 767 | else if (inf->pid != 0) |
2277426b | 768 | { |
79a45e25 | 769 | ui_out_text (current_uiout, "\n"); |
08d72866 | 770 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
2277426b PA |
771 | } |
772 | } | |
773 | ||
b77209e0 PA |
774 | /* Print information about currently known inferiors. */ |
775 | ||
776 | static void | |
2277426b | 777 | info_inferiors_command (char *args, int from_tty) |
b77209e0 | 778 | { |
79a45e25 | 779 | print_inferior (current_uiout, args); |
b77209e0 PA |
780 | } |
781 | ||
6c95b8df PA |
782 | /* remove-inferior ID */ |
783 | ||
70221824 | 784 | static void |
6c95b8df PA |
785 | remove_inferior_command (char *args, int from_tty) |
786 | { | |
787 | int num; | |
788 | struct inferior *inf; | |
197f0a60 | 789 | struct get_number_or_range_state state; |
6c95b8df | 790 | |
af624141 MS |
791 | if (args == NULL || *args == '\0') |
792 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 793 | |
197f0a60 TT |
794 | init_number_or_range (&state, args); |
795 | while (!state.finished) | |
af624141 | 796 | { |
197f0a60 | 797 | num = get_number_or_range (&state); |
af624141 | 798 | inf = find_inferior_id (num); |
6c95b8df | 799 | |
af624141 MS |
800 | if (inf == NULL) |
801 | { | |
802 | warning (_("Inferior ID %d not known."), num); | |
803 | continue; | |
804 | } | |
805 | ||
806 | if (inf == current_inferior ()) | |
807 | { | |
808 | warning (_("Can not remove current symbol inferior %d."), num); | |
809 | continue; | |
810 | } | |
8fa067af | 811 | |
af624141 MS |
812 | if (inf->pid != 0) |
813 | { | |
814 | warning (_("Can not remove active inferior %d."), num); | |
815 | continue; | |
816 | } | |
6c95b8df | 817 | |
7a41607e | 818 | delete_inferior (inf); |
af624141 | 819 | } |
6c95b8df PA |
820 | } |
821 | ||
a79b8f6e VP |
822 | struct inferior * |
823 | add_inferior_with_spaces (void) | |
824 | { | |
825 | struct address_space *aspace; | |
826 | struct program_space *pspace; | |
827 | struct inferior *inf; | |
6ecd4729 | 828 | struct gdbarch_info info; |
a79b8f6e VP |
829 | |
830 | /* If all inferiors share an address space on this system, this | |
831 | doesn't really return a new address space; otherwise, it | |
832 | really does. */ | |
833 | aspace = maybe_new_address_space (); | |
834 | pspace = add_program_space (aspace); | |
835 | inf = add_inferior (0); | |
836 | inf->pspace = pspace; | |
837 | inf->aspace = pspace->aspace; | |
838 | ||
6ecd4729 PA |
839 | /* Setup the inferior's initial arch, based on information obtained |
840 | from the global "set ..." options. */ | |
841 | gdbarch_info_init (&info); | |
842 | inf->gdbarch = gdbarch_find_by_info (info); | |
843 | /* The "set ..." options reject invalid settings, so we should | |
844 | always have a valid arch by now. */ | |
845 | gdb_assert (inf->gdbarch != NULL); | |
846 | ||
a79b8f6e VP |
847 | return inf; |
848 | } | |
6c95b8df PA |
849 | |
850 | /* add-inferior [-copies N] [-exec FILENAME] */ | |
851 | ||
70221824 | 852 | static void |
6c95b8df PA |
853 | add_inferior_command (char *args, int from_tty) |
854 | { | |
855 | int i, copies = 1; | |
856 | char *exec = NULL; | |
857 | char **argv; | |
858 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
859 | ||
860 | if (args) | |
861 | { | |
862 | argv = gdb_buildargv (args); | |
863 | make_cleanup_freeargv (argv); | |
864 | ||
865 | for (; *argv != NULL; argv++) | |
866 | { | |
867 | if (**argv == '-') | |
868 | { | |
869 | if (strcmp (*argv, "-copies") == 0) | |
870 | { | |
871 | ++argv; | |
872 | if (!*argv) | |
873 | error (_("No argument to -copies")); | |
874 | copies = parse_and_eval_long (*argv); | |
875 | } | |
876 | else if (strcmp (*argv, "-exec") == 0) | |
877 | { | |
878 | ++argv; | |
879 | if (!*argv) | |
880 | error (_("No argument to -exec")); | |
47902076 HAQ |
881 | exec = tilde_expand (*argv); |
882 | make_cleanup (xfree, exec); | |
6c95b8df PA |
883 | } |
884 | } | |
885 | else | |
886 | error (_("Invalid argument")); | |
887 | } | |
888 | } | |
889 | ||
890 | save_current_space_and_thread (); | |
891 | ||
892 | for (i = 0; i < copies; ++i) | |
893 | { | |
a79b8f6e | 894 | struct inferior *inf = add_inferior_with_spaces (); |
6c95b8df PA |
895 | |
896 | printf_filtered (_("Added inferior %d\n"), inf->num); | |
897 | ||
898 | if (exec != NULL) | |
899 | { | |
900 | /* Switch over temporarily, while reading executable and | |
1777feb0 | 901 | symbols.q. */ |
a79b8f6e | 902 | set_current_program_space (inf->pspace); |
6c95b8df PA |
903 | set_current_inferior (inf); |
904 | switch_to_thread (null_ptid); | |
905 | ||
906 | exec_file_attach (exec, from_tty); | |
907 | symbol_file_add_main (exec, from_tty); | |
908 | } | |
909 | } | |
910 | ||
911 | do_cleanups (old_chain); | |
912 | } | |
913 | ||
914 | /* clone-inferior [-copies N] [ID] */ | |
915 | ||
70221824 | 916 | static void |
6c95b8df PA |
917 | clone_inferior_command (char *args, int from_tty) |
918 | { | |
919 | int i, copies = 1; | |
920 | char **argv; | |
921 | struct inferior *orginf = NULL; | |
922 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); | |
923 | ||
924 | if (args) | |
925 | { | |
926 | argv = gdb_buildargv (args); | |
927 | make_cleanup_freeargv (argv); | |
928 | ||
929 | for (; *argv != NULL; argv++) | |
930 | { | |
931 | if (**argv == '-') | |
932 | { | |
933 | if (strcmp (*argv, "-copies") == 0) | |
934 | { | |
935 | ++argv; | |
936 | if (!*argv) | |
937 | error (_("No argument to -copies")); | |
938 | copies = parse_and_eval_long (*argv); | |
939 | ||
940 | if (copies < 0) | |
941 | error (_("Invalid copies number")); | |
942 | } | |
943 | } | |
944 | else | |
945 | { | |
946 | if (orginf == NULL) | |
947 | { | |
948 | int num; | |
949 | ||
950 | /* The first non-option (-) argument specified the | |
951 | program space ID. */ | |
952 | num = parse_and_eval_long (*argv); | |
953 | orginf = find_inferior_id (num); | |
954 | ||
955 | if (orginf == NULL) | |
956 | error (_("Inferior ID %d not known."), num); | |
957 | continue; | |
958 | } | |
959 | else | |
960 | error (_("Invalid argument")); | |
961 | } | |
962 | } | |
963 | } | |
964 | ||
965 | /* If no inferior id was specified, then the user wants to clone the | |
966 | current inferior. */ | |
967 | if (orginf == NULL) | |
968 | orginf = current_inferior (); | |
969 | ||
970 | save_current_space_and_thread (); | |
971 | ||
972 | for (i = 0; i < copies; ++i) | |
973 | { | |
974 | struct address_space *aspace; | |
975 | struct program_space *pspace; | |
976 | struct inferior *inf; | |
977 | ||
978 | /* If all inferiors share an address space on this system, this | |
979 | doesn't really return a new address space; otherwise, it | |
980 | really does. */ | |
981 | aspace = maybe_new_address_space (); | |
982 | pspace = add_program_space (aspace); | |
983 | inf = add_inferior (0); | |
984 | inf->pspace = pspace; | |
985 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
986 | inf->gdbarch = orginf->gdbarch; |
987 | ||
988 | /* If the original inferior had a user specified target | |
989 | description, make the clone use it too. */ | |
990 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
991 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df PA |
992 | |
993 | printf_filtered (_("Added inferior %d.\n"), inf->num); | |
994 | ||
995 | set_current_inferior (inf); | |
996 | switch_to_thread (null_ptid); | |
997 | clone_program_space (pspace, orginf->pspace); | |
998 | } | |
999 | ||
1000 | do_cleanups (old_chain); | |
1001 | } | |
1002 | ||
b77209e0 PA |
1003 | /* Print notices when new inferiors are created and die. */ |
1004 | static void | |
1005 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
1006 | struct cmd_list_element *c, const char *value) | |
1007 | { | |
1008 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
1009 | } | |
1010 | ||
e3940304 PA |
1011 | /* Return a new value for the selected inferior's id. */ |
1012 | ||
1013 | static struct value * | |
1014 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
1015 | void *ignore) | |
1016 | { | |
1017 | struct inferior *inf = current_inferior (); | |
1018 | ||
1019 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
1020 | } | |
1021 | ||
1022 | /* Implementation of `$_inferior' variable. */ | |
1023 | ||
1024 | static const struct internalvar_funcs inferior_funcs = | |
1025 | { | |
1026 | inferior_id_make_value, | |
1027 | NULL, | |
1028 | NULL | |
1029 | }; | |
1030 | ||
6c95b8df PA |
1031 | \f |
1032 | ||
6c95b8df PA |
1033 | void |
1034 | initialize_inferiors (void) | |
1035 | { | |
06da564e EZ |
1036 | struct cmd_list_element *c = NULL; |
1037 | ||
6c95b8df PA |
1038 | /* There's always one inferior. Note that this function isn't an |
1039 | automatic _initialize_foo function, since other _initialize_foo | |
1040 | routines may need to install their per-inferior data keys. We | |
1041 | can only allocate an inferior when all those modules have done | |
1042 | that. Do this after initialize_progspace, due to the | |
1043 | current_program_space reference. */ | |
1044 | current_inferior_ = add_inferior (0); | |
1045 | current_inferior_->pspace = current_program_space; | |
1046 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
1047 | /* The architecture will be initialized shortly, by |
1048 | initialize_current_architecture. */ | |
6c95b8df | 1049 | |
c82c0b55 MS |
1050 | add_info ("inferiors", info_inferiors_command, |
1051 | _("IDs of specified inferiors (all inferiors if no argument).")); | |
b77209e0 | 1052 | |
06da564e | 1053 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df PA |
1054 | Add a new inferior.\n\ |
1055 | Usage: add-inferior [-copies <N>] [-exec <FILENAME>]\n\ | |
af624141 | 1056 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df PA |
1057 | FILENAME is the file name of the executable to use\n\ |
1058 | as main program.")); | |
06da564e | 1059 | set_cmd_completer (c, filename_completer); |
6c95b8df | 1060 | |
af624141 MS |
1061 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
1062 | Remove inferior ID (or list of IDs).\n\ | |
1063 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
1064 | |
1065 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
1066 | Clone inferior ID.\n\ | |
1067 | Usage: clone-inferior [-copies <N>] [ID]\n\ | |
1068 | Add N copies of inferior ID. The new inferior has the same\n\ | |
1069 | executable loaded as the copied inferior. If -copies is not specified,\n\ | |
1070 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
1071 | that is cloned.")); | |
2277426b | 1072 | |
af624141 MS |
1073 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
1074 | Detach from inferior ID (or list of IDS)."), | |
2277426b PA |
1075 | &detachlist); |
1076 | ||
af624141 MS |
1077 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
1078 | Kill inferior ID (or list of IDs)."), | |
2277426b PA |
1079 | &killlist); |
1080 | ||
1081 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
1082 | Use this command to switch between inferiors.\n\ | |
1083 | The new inferior ID must be currently known."), | |
1084 | &cmdlist); | |
6c95b8df PA |
1085 | |
1086 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
1087 | &print_inferior_events, _("\ | |
1088 | Set printing of inferior events (e.g., inferior start and exit)."), _("\ | |
1089 | Show printing of inferior events (e.g., inferior start and exit)."), NULL, | |
1090 | NULL, | |
1091 | show_print_inferior_events, | |
1092 | &setprintlist, &showprintlist); | |
1093 | ||
e3940304 | 1094 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 1095 | } |