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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
e2882c85 | 3 | Copyright (C) 2008-2018 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" | |
76727919 | 29 | #include "observable.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" |
5ed8105e | 38 | #include "progspace-and-thread.h" |
b77209e0 | 39 | |
8e260fc0 TT |
40 | /* Keep a registry of per-inferior data-pointers required by other GDB |
41 | modules. */ | |
42 | ||
6b81941e | 43 | DEFINE_REGISTRY (inferior, REGISTRY_ACCESS_FIELD) |
6c95b8df PA |
44 | |
45 | struct inferior *inferior_list = NULL; | |
b77209e0 PA |
46 | static int highest_inferior_num; |
47 | ||
f67c0c91 SDJ |
48 | /* See inferior.h. */ |
49 | int print_inferior_events = 1; | |
b77209e0 | 50 | |
3a3fd0fd PA |
51 | /* The Current Inferior. This is a strong reference. I.e., whenever |
52 | an inferior is the current inferior, its refcount is | |
53 | incremented. */ | |
6c95b8df PA |
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 | ||
3a3fd0fd PA |
68 | inf->incref (); |
69 | current_inferior_->decref (); | |
6c95b8df PA |
70 | current_inferior_ = inf; |
71 | } | |
72 | ||
089354bb SM |
73 | private_inferior::~private_inferior () = default; |
74 | ||
0550c955 | 75 | inferior::~inferior () |
b77209e0 | 76 | { |
0550c955 PA |
77 | inferior *inf = this; |
78 | ||
e0ba6746 | 79 | discard_all_inferior_continuations (inf); |
6c95b8df | 80 | inferior_free_data (inf); |
3f81c18a VP |
81 | xfree (inf->args); |
82 | xfree (inf->terminal); | |
6ecd4729 | 83 | target_desc_info_free (inf->tdesc_info); |
0550c955 PA |
84 | } |
85 | ||
86 | inferior::inferior (int pid_) | |
87 | : num (++highest_inferior_num), | |
88 | pid (pid_), | |
9a6c7d9c | 89 | environment (gdb_environ::from_host_environ ()), |
0550c955 PA |
90 | registry_data () |
91 | { | |
0550c955 | 92 | inferior_alloc_data (this); |
b77209e0 PA |
93 | } |
94 | ||
b77209e0 PA |
95 | struct inferior * |
96 | add_inferior_silent (int pid) | |
97 | { | |
0550c955 | 98 | inferior *inf = new inferior (pid); |
b05b1202 PA |
99 | |
100 | if (inferior_list == NULL) | |
101 | inferior_list = inf; | |
102 | else | |
103 | { | |
0550c955 | 104 | inferior *last; |
b05b1202 PA |
105 | |
106 | for (last = inferior_list; last->next != NULL; last = last->next) | |
107 | ; | |
108 | last->next = inf; | |
109 | } | |
b77209e0 | 110 | |
76727919 | 111 | gdb::observers::inferior_added.notify (inf); |
a79b8f6e | 112 | |
6c95b8df PA |
113 | if (pid != 0) |
114 | inferior_appeared (inf, pid); | |
a562dc8f | 115 | |
b77209e0 PA |
116 | return inf; |
117 | } | |
118 | ||
119 | struct inferior * | |
120 | add_inferior (int pid) | |
121 | { | |
122 | struct inferior *inf = add_inferior_silent (pid); | |
123 | ||
124 | if (print_inferior_events) | |
f67c0c91 SDJ |
125 | printf_unfiltered (_("[New inferior %d (%s)]\n"), |
126 | inf->num, | |
127 | target_pid_to_str (pid_to_ptid (pid))); | |
b77209e0 PA |
128 | |
129 | return inf; | |
130 | } | |
131 | ||
132 | struct delete_thread_of_inferior_arg | |
133 | { | |
134 | int pid; | |
135 | int silent; | |
136 | }; | |
137 | ||
138 | static int | |
139 | delete_thread_of_inferior (struct thread_info *tp, void *data) | |
140 | { | |
9a3c8263 SM |
141 | struct delete_thread_of_inferior_arg *arg |
142 | = (struct delete_thread_of_inferior_arg *) data; | |
b77209e0 PA |
143 | |
144 | if (ptid_get_pid (tp->ptid) == arg->pid) | |
145 | { | |
146 | if (arg->silent) | |
00431a78 | 147 | delete_thread_silent (tp); |
b77209e0 | 148 | else |
00431a78 | 149 | delete_thread (tp); |
b77209e0 PA |
150 | } |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
a79b8f6e | 155 | void |
7a41607e | 156 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
157 | { |
158 | struct inferior *inf, *infprev; | |
6c95b8df | 159 | struct delete_thread_of_inferior_arg arg; |
b77209e0 PA |
160 | |
161 | infprev = NULL; | |
162 | ||
163 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 164 | if (inf == todel) |
b77209e0 PA |
165 | break; |
166 | ||
167 | if (!inf) | |
168 | return; | |
169 | ||
6c95b8df | 170 | arg.pid = inf->pid; |
7a41607e | 171 | arg.silent = 1; |
b77209e0 PA |
172 | |
173 | iterate_over_threads (delete_thread_of_inferior, &arg); | |
4a92f99b | 174 | |
7e1789f5 PA |
175 | if (infprev) |
176 | infprev->next = inf->next; | |
177 | else | |
178 | inferior_list = inf->next; | |
179 | ||
76727919 | 180 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 181 | |
7a41607e SM |
182 | /* If this program space is rendered useless, remove it. */ |
183 | if (program_space_empty_p (inf->pspace)) | |
184 | delete_program_space (inf->pspace); | |
ef3f321b | 185 | |
0550c955 | 186 | delete inf; |
ef3f321b SM |
187 | } |
188 | ||
6c95b8df PA |
189 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
190 | exit of its threads. */ | |
191 | ||
192 | static void | |
193 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
194 | { | |
195 | struct inferior *inf; | |
196 | struct delete_thread_of_inferior_arg arg; | |
197 | ||
198 | for (inf = inferior_list; inf; inf = inf->next) | |
199 | if (inf == inftoex) | |
200 | break; | |
201 | ||
202 | if (!inf) | |
203 | return; | |
204 | ||
205 | arg.pid = inf->pid; | |
206 | arg.silent = silent; | |
207 | ||
208 | iterate_over_threads (delete_thread_of_inferior, &arg); | |
209 | ||
76727919 | 210 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
211 | |
212 | inf->pid = 0; | |
e714e1bf | 213 | inf->fake_pid_p = 0; |
ef4a3395 PA |
214 | inf->priv = NULL; |
215 | ||
6c95b8df PA |
216 | if (inf->vfork_parent != NULL) |
217 | { | |
218 | inf->vfork_parent->vfork_child = NULL; | |
219 | inf->vfork_parent = NULL; | |
220 | } | |
68c9da30 PA |
221 | if (inf->vfork_child != NULL) |
222 | { | |
223 | inf->vfork_child->vfork_parent = NULL; | |
224 | inf->vfork_child = NULL; | |
225 | } | |
8cf64490 | 226 | |
68c9da30 | 227 | inf->pending_detach = 0; |
85046ae2 YQ |
228 | /* Reset it. */ |
229 | inf->control = {NO_STOP_QUIETLY}; | |
6c95b8df PA |
230 | } |
231 | ||
232 | void | |
00431a78 | 233 | exit_inferior (inferior *inf) |
6c95b8df | 234 | { |
00431a78 | 235 | int pid = inf->pid; |
6c95b8df | 236 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
237 | } |
238 | ||
239 | void | |
240 | exit_inferior_silent (int pid) | |
241 | { | |
242 | struct inferior *inf = find_inferior_pid (pid); | |
abbb1732 | 243 | |
6c95b8df PA |
244 | exit_inferior_1 (inf, 1); |
245 | } | |
246 | ||
00431a78 PA |
247 | void |
248 | exit_inferior_silent (inferior *inf) | |
249 | { | |
250 | exit_inferior_1 (inf, 1); | |
251 | } | |
252 | ||
6c95b8df PA |
253 | void |
254 | exit_inferior_num_silent (int num) | |
255 | { | |
256 | struct inferior *inf = find_inferior_id (num); | |
257 | ||
258 | exit_inferior_1 (inf, 1); | |
b77209e0 PA |
259 | } |
260 | ||
bc09b0c1 SM |
261 | /* See inferior.h. */ |
262 | ||
b77209e0 | 263 | void |
bc09b0c1 | 264 | detach_inferior (inferior *inf) |
b77209e0 | 265 | { |
bc09b0c1 SM |
266 | /* Save the pid, since exit_inferior_1 will reset it. */ |
267 | int pid = inf->pid; | |
abbb1732 | 268 | |
3b462ec2 | 269 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
270 | |
271 | if (print_inferior_events) | |
f67c0c91 SDJ |
272 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
273 | inf->num, | |
274 | target_pid_to_str (pid_to_ptid (pid))); | |
b77209e0 PA |
275 | } |
276 | ||
6c95b8df PA |
277 | void |
278 | inferior_appeared (struct inferior *inf, int pid) | |
279 | { | |
280 | inf->pid = pid; | |
2ddf4301 SM |
281 | inf->has_exit_code = 0; |
282 | inf->exit_code = 0; | |
6c95b8df | 283 | |
76727919 | 284 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
285 | } |
286 | ||
82f73884 PA |
287 | void |
288 | discard_all_inferiors (void) | |
289 | { | |
6c95b8df | 290 | struct inferior *inf; |
82f73884 | 291 | |
6c95b8df | 292 | for (inf = inferior_list; inf; inf = inf->next) |
82f73884 | 293 | { |
6c95b8df | 294 | if (inf->pid != 0) |
00431a78 | 295 | exit_inferior_silent (inf); |
82f73884 PA |
296 | } |
297 | } | |
298 | ||
6c95b8df | 299 | struct inferior * |
b77209e0 PA |
300 | find_inferior_id (int num) |
301 | { | |
302 | struct inferior *inf; | |
303 | ||
304 | for (inf = inferior_list; inf; inf = inf->next) | |
305 | if (inf->num == num) | |
306 | return inf; | |
307 | ||
308 | return NULL; | |
309 | } | |
310 | ||
311 | struct inferior * | |
312 | find_inferior_pid (int pid) | |
313 | { | |
314 | struct inferior *inf; | |
315 | ||
6c95b8df PA |
316 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
317 | a bug somewhere else. There may be more than one with pid == 0, | |
318 | for instance. */ | |
319 | gdb_assert (pid != 0); | |
320 | ||
b77209e0 PA |
321 | for (inf = inferior_list; inf; inf = inf->next) |
322 | if (inf->pid == pid) | |
323 | return inf; | |
324 | ||
325 | return NULL; | |
326 | } | |
327 | ||
c9657e70 SM |
328 | /* See inferior.h */ |
329 | ||
330 | struct inferior * | |
331 | find_inferior_ptid (ptid_t ptid) | |
332 | { | |
333 | return find_inferior_pid (ptid_get_pid (ptid)); | |
334 | } | |
335 | ||
32990ada | 336 | /* See inferior.h. */ |
6c95b8df PA |
337 | |
338 | struct inferior * | |
339 | find_inferior_for_program_space (struct program_space *pspace) | |
340 | { | |
32990ada PA |
341 | struct inferior *inf = current_inferior (); |
342 | ||
343 | if (inf->pspace == pspace) | |
344 | return inf; | |
6c95b8df PA |
345 | |
346 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
347 | { | |
348 | if (inf->pspace == pspace) | |
349 | return inf; | |
350 | } | |
351 | ||
352 | return NULL; | |
353 | } | |
354 | ||
b77209e0 PA |
355 | struct inferior * |
356 | iterate_over_inferiors (int (*callback) (struct inferior *, void *), | |
357 | void *data) | |
358 | { | |
359 | struct inferior *inf, *infnext; | |
360 | ||
361 | for (inf = inferior_list; inf; inf = infnext) | |
362 | { | |
363 | infnext = inf->next; | |
364 | if ((*callback) (inf, data)) | |
365 | return inf; | |
366 | } | |
367 | ||
368 | return NULL; | |
369 | } | |
370 | ||
b77209e0 PA |
371 | int |
372 | have_inferiors (void) | |
373 | { | |
6c95b8df PA |
374 | struct inferior *inf; |
375 | ||
376 | for (inf = inferior_list; inf; inf = inf->next) | |
377 | if (inf->pid != 0) | |
378 | return 1; | |
379 | ||
380 | return 0; | |
b77209e0 PA |
381 | } |
382 | ||
8020350c DB |
383 | /* Return the number of live inferiors. We account for the case |
384 | where an inferior might have a non-zero pid but no threads, as | |
385 | in the middle of a 'mourn' operation. */ | |
386 | ||
c35b1492 | 387 | int |
8020350c | 388 | number_of_live_inferiors (void) |
c35b1492 | 389 | { |
cd2effb2 | 390 | struct inferior *inf; |
8020350c | 391 | int num_inf = 0; |
6c95b8df | 392 | |
cd2effb2 JK |
393 | for (inf = inferior_list; inf; inf = inf->next) |
394 | if (inf->pid != 0) | |
395 | { | |
396 | struct thread_info *tp; | |
8020350c DB |
397 | |
398 | ALL_NON_EXITED_THREADS (tp) | |
399 | if (tp && ptid_get_pid (tp->ptid) == inf->pid) | |
400 | if (target_has_execution_1 (tp->ptid)) | |
401 | { | |
402 | /* Found a live thread in this inferior, go to the next | |
403 | inferior. */ | |
404 | ++num_inf; | |
405 | break; | |
406 | } | |
cd2effb2 JK |
407 | } |
408 | ||
8020350c DB |
409 | return num_inf; |
410 | } | |
411 | ||
412 | /* Return true if there is at least one live inferior. */ | |
413 | ||
414 | int | |
415 | have_live_inferiors (void) | |
416 | { | |
417 | return number_of_live_inferiors () > 0; | |
6c95b8df PA |
418 | } |
419 | ||
bed8455c DE |
420 | /* Prune away any unused inferiors, and then prune away no longer used |
421 | program spaces. */ | |
6c95b8df PA |
422 | |
423 | void | |
424 | prune_inferiors (void) | |
425 | { | |
426 | struct inferior *ss, **ss_link; | |
6c95b8df PA |
427 | |
428 | ss = inferior_list; | |
429 | ss_link = &inferior_list; | |
430 | while (ss) | |
431 | { | |
3a3fd0fd | 432 | if (!ss->deletable () |
6c95b8df PA |
433 | || !ss->removable |
434 | || ss->pid != 0) | |
435 | { | |
436 | ss_link = &ss->next; | |
437 | ss = *ss_link; | |
438 | continue; | |
439 | } | |
440 | ||
441 | *ss_link = ss->next; | |
7a41607e | 442 | delete_inferior (ss); |
6c95b8df PA |
443 | ss = *ss_link; |
444 | } | |
6c95b8df PA |
445 | } |
446 | ||
447 | /* Simply returns the count of inferiors. */ | |
448 | ||
449 | int | |
450 | number_of_inferiors (void) | |
451 | { | |
452 | struct inferior *inf; | |
453 | int count = 0; | |
454 | ||
455 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
456 | count++; | |
457 | ||
458 | return count; | |
c35b1492 PA |
459 | } |
460 | ||
db2b9fdd PA |
461 | /* Converts an inferior process id to a string. Like |
462 | target_pid_to_str, but special cases the null process. */ | |
463 | ||
7a114964 | 464 | static const char * |
db2b9fdd PA |
465 | inferior_pid_to_str (int pid) |
466 | { | |
467 | if (pid != 0) | |
468 | return target_pid_to_str (pid_to_ptid (pid)); | |
469 | else | |
470 | return _("<null>"); | |
471 | } | |
472 | ||
4034d0ff AT |
473 | /* See inferior.h. */ |
474 | ||
475 | void | |
476 | print_selected_inferior (struct ui_out *uiout) | |
477 | { | |
4034d0ff | 478 | struct inferior *inf = current_inferior (); |
53488a6e | 479 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 480 | |
53488a6e TS |
481 | if (filename == NULL) |
482 | filename = _("<noexec>"); | |
112e8700 SM |
483 | |
484 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
53488a6e | 485 | inf->num, inferior_pid_to_str (inf->pid), filename); |
4034d0ff AT |
486 | } |
487 | ||
b77209e0 PA |
488 | /* Prints the list of inferiors and their details on UIOUT. This is a |
489 | version of 'info_inferior_command' suitable for use from MI. | |
490 | ||
c82c0b55 MS |
491 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
492 | inferiors that should be printed. Otherwise, all inferiors are | |
493 | printed. */ | |
494 | ||
495 | static void | |
1d12d88f | 496 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 PA |
497 | { |
498 | struct inferior *inf; | |
8bb318c6 | 499 | int inf_count = 0; |
b77209e0 | 500 | |
8bb318c6 TT |
501 | /* Compute number of inferiors we will print. */ |
502 | for (inf = inferior_list; inf; inf = inf->next) | |
503 | { | |
c82c0b55 | 504 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
505 | continue; |
506 | ||
507 | ++inf_count; | |
508 | } | |
509 | ||
510 | if (inf_count == 0) | |
511 | { | |
112e8700 | 512 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
513 | return; |
514 | } | |
515 | ||
4a2b031d | 516 | ui_out_emit_table table_emitter (uiout, 4, inf_count, "inferiors"); |
112e8700 SM |
517 | uiout->table_header (1, ui_left, "current", ""); |
518 | uiout->table_header (4, ui_left, "number", "Num"); | |
519 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
520 | uiout->table_header (17, ui_left, "exec", "Executable"); | |
b77209e0 | 521 | |
112e8700 | 522 | uiout->table_body (); |
b77209e0 PA |
523 | for (inf = inferior_list; inf; inf = inf->next) |
524 | { | |
c82c0b55 | 525 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
526 | continue; |
527 | ||
2e783024 | 528 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 529 | |
6c95b8df | 530 | if (inf == current_inferior ()) |
112e8700 | 531 | uiout->field_string ("current", "*"); |
b77209e0 | 532 | else |
112e8700 | 533 | uiout->field_skip ("current"); |
b77209e0 | 534 | |
112e8700 | 535 | uiout->field_int ("number", inf->num); |
6c95b8df | 536 | |
112e8700 | 537 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 538 | |
1f0c4988 | 539 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 540 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 541 | else |
112e8700 | 542 | uiout->field_skip ("exec"); |
6c95b8df PA |
543 | |
544 | /* Print extra info that isn't really fit to always present in | |
545 | tabular form. Currently we print the vfork parent/child | |
546 | relationships, if any. */ | |
547 | if (inf->vfork_parent) | |
548 | { | |
112e8700 SM |
549 | uiout->text (_("\n\tis vfork child of inferior ")); |
550 | uiout->field_int ("vfork-parent", inf->vfork_parent->num); | |
6c95b8df PA |
551 | } |
552 | if (inf->vfork_child) | |
553 | { | |
112e8700 SM |
554 | uiout->text (_("\n\tis vfork parent of inferior ")); |
555 | uiout->field_int ("vfork-child", inf->vfork_child->num); | |
6c95b8df | 556 | } |
b77209e0 | 557 | |
112e8700 | 558 | uiout->text ("\n"); |
b77209e0 | 559 | } |
b77209e0 PA |
560 | } |
561 | ||
2277426b | 562 | static void |
e503b191 | 563 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 564 | { |
2277426b | 565 | if (!args || !*args) |
af624141 | 566 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 567 | |
bfd28288 PA |
568 | number_or_range_parser parser (args); |
569 | while (!parser.finished ()) | |
af624141 | 570 | { |
bfd28288 | 571 | int num = parser.get_number (); |
2277426b | 572 | |
00431a78 PA |
573 | inferior *inf = find_inferior_id (num); |
574 | if (inf == NULL) | |
af624141 MS |
575 | { |
576 | warning (_("Inferior ID %d not known."), num); | |
577 | continue; | |
578 | } | |
2277426b | 579 | |
00431a78 | 580 | if (inf->pid == 0) |
e3ae3c43 PP |
581 | { |
582 | warning (_("Inferior ID %d is not running."), num); | |
583 | continue; | |
584 | } | |
2277426b | 585 | |
00431a78 PA |
586 | thread_info *tp = any_thread_of_inferior (inf); |
587 | if (tp == NULL) | |
af624141 MS |
588 | { |
589 | warning (_("Inferior ID %d has no threads."), num); | |
590 | continue; | |
591 | } | |
2277426b | 592 | |
00431a78 | 593 | switch_to_thread (tp); |
2277426b | 594 | |
af624141 MS |
595 | detach_command (NULL, from_tty); |
596 | } | |
2277426b PA |
597 | } |
598 | ||
599 | static void | |
e503b191 | 600 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 601 | { |
2277426b | 602 | if (!args || !*args) |
af624141 | 603 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 604 | |
bfd28288 PA |
605 | number_or_range_parser parser (args); |
606 | while (!parser.finished ()) | |
af624141 | 607 | { |
bfd28288 | 608 | int num = parser.get_number (); |
2277426b | 609 | |
00431a78 PA |
610 | inferior *inf = find_inferior_id (num); |
611 | if (inf == NULL) | |
af624141 MS |
612 | { |
613 | warning (_("Inferior ID %d not known."), num); | |
614 | continue; | |
615 | } | |
2277426b | 616 | |
00431a78 | 617 | if (inf->pid == 0) |
e3ae3c43 PP |
618 | { |
619 | warning (_("Inferior ID %d is not running."), num); | |
620 | continue; | |
621 | } | |
2277426b | 622 | |
00431a78 PA |
623 | thread_info *tp = any_thread_of_inferior (inf); |
624 | if (tp == NULL) | |
af624141 MS |
625 | { |
626 | warning (_("Inferior ID %d has no threads."), num); | |
627 | continue; | |
628 | } | |
2277426b | 629 | |
00431a78 | 630 | switch_to_thread (tp); |
2277426b | 631 | |
af624141 MS |
632 | target_kill (); |
633 | } | |
2277426b PA |
634 | |
635 | bfd_cache_close_all (); | |
636 | } | |
637 | ||
638 | static void | |
e503b191 | 639 | inferior_command (const char *args, int from_tty) |
2277426b | 640 | { |
6c95b8df PA |
641 | struct inferior *inf; |
642 | int num; | |
2277426b PA |
643 | |
644 | num = parse_and_eval_long (args); | |
645 | ||
6c95b8df PA |
646 | inf = find_inferior_id (num); |
647 | if (inf == NULL) | |
2277426b PA |
648 | error (_("Inferior ID %d not known."), num); |
649 | ||
6c95b8df | 650 | if (inf->pid != 0) |
2277426b | 651 | { |
00431a78 | 652 | if (inf != current_inferior ()) |
6c95b8df | 653 | { |
00431a78 PA |
654 | thread_info *tp = any_thread_of_inferior (inf); |
655 | if (tp == NULL) | |
6c95b8df | 656 | error (_("Inferior has no threads.")); |
2277426b | 657 | |
00431a78 | 658 | switch_to_thread (tp); |
6c95b8df PA |
659 | } |
660 | ||
76727919 | 661 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
662 | (USER_SELECTED_INFERIOR |
663 | | USER_SELECTED_THREAD | |
664 | | USER_SELECTED_FRAME); | |
2277426b | 665 | } |
6c95b8df PA |
666 | else |
667 | { | |
6c95b8df | 668 | set_current_inferior (inf); |
00431a78 | 669 | switch_to_no_thread (); |
6c95b8df | 670 | set_current_program_space (inf->pspace); |
2277426b | 671 | |
76727919 TT |
672 | gdb::observers::user_selected_context_changed.notify |
673 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
674 | } |
675 | } | |
676 | ||
b77209e0 PA |
677 | /* Print information about currently known inferiors. */ |
678 | ||
679 | static void | |
1d12d88f | 680 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 681 | { |
79a45e25 | 682 | print_inferior (current_uiout, args); |
b77209e0 PA |
683 | } |
684 | ||
6c95b8df PA |
685 | /* remove-inferior ID */ |
686 | ||
70221824 | 687 | static void |
0b39b52e | 688 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 689 | { |
af624141 MS |
690 | if (args == NULL || *args == '\0') |
691 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 692 | |
bfd28288 PA |
693 | number_or_range_parser parser (args); |
694 | while (!parser.finished ()) | |
af624141 | 695 | { |
bfd28288 PA |
696 | int num = parser.get_number (); |
697 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 698 | |
af624141 MS |
699 | if (inf == NULL) |
700 | { | |
701 | warning (_("Inferior ID %d not known."), num); | |
702 | continue; | |
703 | } | |
704 | ||
3a3fd0fd | 705 | if (!inf->deletable ()) |
af624141 | 706 | { |
eb2332d7 | 707 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
708 | continue; |
709 | } | |
8fa067af | 710 | |
af624141 MS |
711 | if (inf->pid != 0) |
712 | { | |
713 | warning (_("Can not remove active inferior %d."), num); | |
714 | continue; | |
715 | } | |
6c95b8df | 716 | |
7a41607e | 717 | delete_inferior (inf); |
af624141 | 718 | } |
6c95b8df PA |
719 | } |
720 | ||
a79b8f6e VP |
721 | struct inferior * |
722 | add_inferior_with_spaces (void) | |
723 | { | |
724 | struct address_space *aspace; | |
725 | struct program_space *pspace; | |
726 | struct inferior *inf; | |
6ecd4729 | 727 | struct gdbarch_info info; |
a79b8f6e VP |
728 | |
729 | /* If all inferiors share an address space on this system, this | |
730 | doesn't really return a new address space; otherwise, it | |
731 | really does. */ | |
732 | aspace = maybe_new_address_space (); | |
564b1e3f | 733 | pspace = new program_space (aspace); |
a79b8f6e VP |
734 | inf = add_inferior (0); |
735 | inf->pspace = pspace; | |
736 | inf->aspace = pspace->aspace; | |
737 | ||
6ecd4729 PA |
738 | /* Setup the inferior's initial arch, based on information obtained |
739 | from the global "set ..." options. */ | |
740 | gdbarch_info_init (&info); | |
741 | inf->gdbarch = gdbarch_find_by_info (info); | |
742 | /* The "set ..." options reject invalid settings, so we should | |
743 | always have a valid arch by now. */ | |
744 | gdb_assert (inf->gdbarch != NULL); | |
745 | ||
a79b8f6e VP |
746 | return inf; |
747 | } | |
6c95b8df PA |
748 | |
749 | /* add-inferior [-copies N] [-exec FILENAME] */ | |
750 | ||
70221824 | 751 | static void |
0b39b52e | 752 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
753 | { |
754 | int i, copies = 1; | |
773a1edc | 755 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 756 | symfile_add_flags add_flags = 0; |
6c95b8df | 757 | |
ecf45d2c SL |
758 | if (from_tty) |
759 | add_flags |= SYMFILE_VERBOSE; | |
760 | ||
6c95b8df PA |
761 | if (args) |
762 | { | |
773a1edc | 763 | gdb_argv built_argv (args); |
6c95b8df | 764 | |
773a1edc | 765 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
766 | { |
767 | if (**argv == '-') | |
768 | { | |
769 | if (strcmp (*argv, "-copies") == 0) | |
770 | { | |
771 | ++argv; | |
772 | if (!*argv) | |
773 | error (_("No argument to -copies")); | |
774 | copies = parse_and_eval_long (*argv); | |
775 | } | |
776 | else if (strcmp (*argv, "-exec") == 0) | |
777 | { | |
778 | ++argv; | |
779 | if (!*argv) | |
780 | error (_("No argument to -exec")); | |
773a1edc | 781 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
782 | } |
783 | } | |
784 | else | |
785 | error (_("Invalid argument")); | |
786 | } | |
787 | } | |
788 | ||
5ed8105e | 789 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
790 | |
791 | for (i = 0; i < copies; ++i) | |
792 | { | |
a79b8f6e | 793 | struct inferior *inf = add_inferior_with_spaces (); |
6c95b8df PA |
794 | |
795 | printf_filtered (_("Added inferior %d\n"), inf->num); | |
796 | ||
797 | if (exec != NULL) | |
798 | { | |
799 | /* Switch over temporarily, while reading executable and | |
1777feb0 | 800 | symbols.q. */ |
a79b8f6e | 801 | set_current_program_space (inf->pspace); |
6c95b8df | 802 | set_current_inferior (inf); |
00431a78 | 803 | switch_to_no_thread (); |
6c95b8df | 804 | |
773a1edc TT |
805 | exec_file_attach (exec.get (), from_tty); |
806 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
807 | } |
808 | } | |
6c95b8df PA |
809 | } |
810 | ||
811 | /* clone-inferior [-copies N] [ID] */ | |
812 | ||
70221824 | 813 | static void |
0b39b52e | 814 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
815 | { |
816 | int i, copies = 1; | |
6c95b8df | 817 | struct inferior *orginf = NULL; |
6c95b8df PA |
818 | |
819 | if (args) | |
820 | { | |
773a1edc | 821 | gdb_argv built_argv (args); |
6c95b8df | 822 | |
773a1edc | 823 | char **argv = built_argv.get (); |
6c95b8df PA |
824 | for (; *argv != NULL; argv++) |
825 | { | |
826 | if (**argv == '-') | |
827 | { | |
828 | if (strcmp (*argv, "-copies") == 0) | |
829 | { | |
830 | ++argv; | |
831 | if (!*argv) | |
832 | error (_("No argument to -copies")); | |
833 | copies = parse_and_eval_long (*argv); | |
834 | ||
835 | if (copies < 0) | |
836 | error (_("Invalid copies number")); | |
837 | } | |
838 | } | |
839 | else | |
840 | { | |
841 | if (orginf == NULL) | |
842 | { | |
843 | int num; | |
844 | ||
845 | /* The first non-option (-) argument specified the | |
846 | program space ID. */ | |
847 | num = parse_and_eval_long (*argv); | |
848 | orginf = find_inferior_id (num); | |
849 | ||
850 | if (orginf == NULL) | |
851 | error (_("Inferior ID %d not known."), num); | |
852 | continue; | |
853 | } | |
854 | else | |
855 | error (_("Invalid argument")); | |
856 | } | |
857 | } | |
858 | } | |
859 | ||
860 | /* If no inferior id was specified, then the user wants to clone the | |
861 | current inferior. */ | |
862 | if (orginf == NULL) | |
863 | orginf = current_inferior (); | |
864 | ||
5ed8105e | 865 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
866 | |
867 | for (i = 0; i < copies; ++i) | |
868 | { | |
869 | struct address_space *aspace; | |
870 | struct program_space *pspace; | |
871 | struct inferior *inf; | |
872 | ||
873 | /* If all inferiors share an address space on this system, this | |
874 | doesn't really return a new address space; otherwise, it | |
875 | really does. */ | |
876 | aspace = maybe_new_address_space (); | |
564b1e3f | 877 | pspace = new program_space (aspace); |
6c95b8df PA |
878 | inf = add_inferior (0); |
879 | inf->pspace = pspace; | |
880 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
881 | inf->gdbarch = orginf->gdbarch; |
882 | ||
883 | /* If the original inferior had a user specified target | |
884 | description, make the clone use it too. */ | |
885 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
886 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df PA |
887 | |
888 | printf_filtered (_("Added inferior %d.\n"), inf->num); | |
889 | ||
890 | set_current_inferior (inf); | |
00431a78 | 891 | switch_to_no_thread (); |
6c95b8df PA |
892 | clone_program_space (pspace, orginf->pspace); |
893 | } | |
6c95b8df PA |
894 | } |
895 | ||
b77209e0 PA |
896 | /* Print notices when new inferiors are created and die. */ |
897 | static void | |
898 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
899 | struct cmd_list_element *c, const char *value) | |
900 | { | |
901 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
902 | } | |
903 | ||
e3940304 PA |
904 | /* Return a new value for the selected inferior's id. */ |
905 | ||
906 | static struct value * | |
907 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
908 | void *ignore) | |
909 | { | |
910 | struct inferior *inf = current_inferior (); | |
911 | ||
912 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
913 | } | |
914 | ||
915 | /* Implementation of `$_inferior' variable. */ | |
916 | ||
917 | static const struct internalvar_funcs inferior_funcs = | |
918 | { | |
919 | inferior_id_make_value, | |
920 | NULL, | |
921 | NULL | |
922 | }; | |
923 | ||
6c95b8df PA |
924 | \f |
925 | ||
6c95b8df PA |
926 | void |
927 | initialize_inferiors (void) | |
928 | { | |
06da564e EZ |
929 | struct cmd_list_element *c = NULL; |
930 | ||
6c95b8df PA |
931 | /* There's always one inferior. Note that this function isn't an |
932 | automatic _initialize_foo function, since other _initialize_foo | |
933 | routines may need to install their per-inferior data keys. We | |
934 | can only allocate an inferior when all those modules have done | |
935 | that. Do this after initialize_progspace, due to the | |
936 | current_program_space reference. */ | |
f67c0c91 | 937 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 938 | current_inferior_->incref (); |
6c95b8df PA |
939 | current_inferior_->pspace = current_program_space; |
940 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
941 | /* The architecture will be initialized shortly, by |
942 | initialize_current_architecture. */ | |
6c95b8df | 943 | |
a3c25011 TT |
944 | add_info ("inferiors", info_inferiors_command, |
945 | _("Print a list of inferiors being managed.\n\ | |
946 | Usage: info inferiors [ID]...\n\ | |
947 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
948 | By default all inferiors are displayed.")); | |
b77209e0 | 949 | |
06da564e | 950 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 951 | Add a new inferior.\n\ |
a3c25011 | 952 | Usage: add-inferior [-copies N] [-exec FILENAME]\n\ |
af624141 | 953 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df PA |
954 | FILENAME is the file name of the executable to use\n\ |
955 | as main program.")); | |
06da564e | 956 | set_cmd_completer (c, filename_completer); |
6c95b8df | 957 | |
af624141 MS |
958 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
959 | Remove inferior ID (or list of IDs).\n\ | |
960 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
961 | |
962 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
963 | Clone inferior ID.\n\ | |
a3c25011 | 964 | Usage: clone-inferior [-copies N] [ID]\n\ |
6c95b8df PA |
965 | Add N copies of inferior ID. The new inferior has the same\n\ |
966 | executable loaded as the copied inferior. If -copies is not specified,\n\ | |
967 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
968 | that is cloned.")); | |
2277426b | 969 | |
af624141 | 970 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
971 | Detach from inferior ID (or list of IDS).\n\ |
972 | Usage; detach inferiors ID..."), | |
2277426b PA |
973 | &detachlist); |
974 | ||
af624141 | 975 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
976 | Kill inferior ID (or list of IDs).\n\ |
977 | Usage: kill inferiors ID..."), | |
2277426b PA |
978 | &killlist); |
979 | ||
980 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
981 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 982 | Usage: inferior ID\n\ |
2277426b PA |
983 | The new inferior ID must be currently known."), |
984 | &cmdlist); | |
6c95b8df PA |
985 | |
986 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
987 | &print_inferior_events, _("\ | |
988 | Set printing of inferior events (e.g., inferior start and exit)."), _("\ | |
989 | Show printing of inferior events (e.g., inferior start and exit)."), NULL, | |
990 | NULL, | |
991 | show_print_inferior_events, | |
992 | &setprintlist, &showprintlist); | |
993 | ||
e3940304 | 994 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 995 | } |