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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
42a4f53d | 3 | Copyright (C) 2008-2019 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" | |
268a13a5 | 32 | #include "gdbsupport/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 | 48 | /* See inferior.h. */ |
491144b5 | 49 | bool print_inferior_events = true; |
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) | |
151bb4a5 PA |
125 | { |
126 | if (pid != 0) | |
127 | printf_unfiltered (_("[New inferior %d (%s)]\n"), | |
128 | inf->num, | |
a068643d | 129 | target_pid_to_str (ptid_t (pid)).c_str ()); |
151bb4a5 PA |
130 | else |
131 | printf_unfiltered (_("[New inferior %d]\n"), inf->num); | |
132 | } | |
b77209e0 PA |
133 | |
134 | return inf; | |
135 | } | |
136 | ||
a79b8f6e | 137 | void |
7a41607e | 138 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
139 | { |
140 | struct inferior *inf, *infprev; | |
b77209e0 PA |
141 | |
142 | infprev = NULL; | |
143 | ||
144 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 145 | if (inf == todel) |
b77209e0 PA |
146 | break; |
147 | ||
148 | if (!inf) | |
149 | return; | |
150 | ||
08036331 PA |
151 | for (thread_info *tp : inf->threads_safe ()) |
152 | delete_thread_silent (tp); | |
4a92f99b | 153 | |
7e1789f5 PA |
154 | if (infprev) |
155 | infprev->next = inf->next; | |
156 | else | |
157 | inferior_list = inf->next; | |
158 | ||
76727919 | 159 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 160 | |
7a41607e SM |
161 | /* If this program space is rendered useless, remove it. */ |
162 | if (program_space_empty_p (inf->pspace)) | |
163 | delete_program_space (inf->pspace); | |
ef3f321b | 164 | |
0550c955 | 165 | delete inf; |
ef3f321b SM |
166 | } |
167 | ||
6c95b8df PA |
168 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
169 | exit of its threads. */ | |
170 | ||
171 | static void | |
172 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
173 | { | |
174 | struct inferior *inf; | |
6c95b8df PA |
175 | |
176 | for (inf = inferior_list; inf; inf = inf->next) | |
177 | if (inf == inftoex) | |
178 | break; | |
179 | ||
180 | if (!inf) | |
181 | return; | |
182 | ||
08036331 PA |
183 | for (thread_info *tp : inf->threads_safe ()) |
184 | { | |
185 | if (silent) | |
186 | delete_thread_silent (tp); | |
187 | else | |
188 | delete_thread (tp); | |
189 | } | |
6c95b8df | 190 | |
76727919 | 191 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
192 | |
193 | inf->pid = 0; | |
9ab8741a | 194 | inf->fake_pid_p = false; |
ef4a3395 PA |
195 | inf->priv = NULL; |
196 | ||
6c95b8df PA |
197 | if (inf->vfork_parent != NULL) |
198 | { | |
199 | inf->vfork_parent->vfork_child = NULL; | |
200 | inf->vfork_parent = NULL; | |
201 | } | |
68c9da30 PA |
202 | if (inf->vfork_child != NULL) |
203 | { | |
204 | inf->vfork_child->vfork_parent = NULL; | |
205 | inf->vfork_child = NULL; | |
206 | } | |
8cf64490 | 207 | |
68c9da30 | 208 | inf->pending_detach = 0; |
85046ae2 | 209 | /* Reset it. */ |
ee841dd8 | 210 | inf->control = inferior_control_state (NO_STOP_QUIETLY); |
66452beb PW |
211 | |
212 | /* Clear the register cache and the frame cache. */ | |
213 | registers_changed (); | |
214 | reinit_frame_cache (); | |
6c95b8df PA |
215 | } |
216 | ||
217 | void | |
00431a78 | 218 | exit_inferior (inferior *inf) |
6c95b8df | 219 | { |
6c95b8df | 220 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
221 | } |
222 | ||
00431a78 PA |
223 | void |
224 | exit_inferior_silent (inferior *inf) | |
225 | { | |
226 | exit_inferior_1 (inf, 1); | |
227 | } | |
228 | ||
bc09b0c1 SM |
229 | /* See inferior.h. */ |
230 | ||
b77209e0 | 231 | void |
bc09b0c1 | 232 | detach_inferior (inferior *inf) |
b77209e0 | 233 | { |
bc09b0c1 SM |
234 | /* Save the pid, since exit_inferior_1 will reset it. */ |
235 | int pid = inf->pid; | |
abbb1732 | 236 | |
3b462ec2 | 237 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
238 | |
239 | if (print_inferior_events) | |
f67c0c91 SDJ |
240 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
241 | inf->num, | |
a068643d | 242 | target_pid_to_str (ptid_t (pid)).c_str ()); |
b77209e0 PA |
243 | } |
244 | ||
6c95b8df PA |
245 | void |
246 | inferior_appeared (struct inferior *inf, int pid) | |
247 | { | |
08036331 PA |
248 | /* If this is the first inferior with threads, reset the global |
249 | thread id. */ | |
250 | if (!any_thread_p ()) | |
251 | init_thread_list (); | |
252 | ||
6c95b8df | 253 | inf->pid = pid; |
2ddf4301 SM |
254 | inf->has_exit_code = 0; |
255 | inf->exit_code = 0; | |
6c95b8df | 256 | |
76727919 | 257 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
258 | } |
259 | ||
82f73884 PA |
260 | void |
261 | discard_all_inferiors (void) | |
262 | { | |
08036331 PA |
263 | for (inferior *inf : all_non_exited_inferiors ()) |
264 | exit_inferior_silent (inf); | |
82f73884 PA |
265 | } |
266 | ||
6c95b8df | 267 | struct inferior * |
b77209e0 PA |
268 | find_inferior_id (int num) |
269 | { | |
08036331 | 270 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
271 | if (inf->num == num) |
272 | return inf; | |
273 | ||
274 | return NULL; | |
275 | } | |
276 | ||
277 | struct inferior * | |
278 | find_inferior_pid (int pid) | |
279 | { | |
6c95b8df PA |
280 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
281 | a bug somewhere else. There may be more than one with pid == 0, | |
282 | for instance. */ | |
283 | gdb_assert (pid != 0); | |
284 | ||
08036331 | 285 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
286 | if (inf->pid == pid) |
287 | return inf; | |
288 | ||
289 | return NULL; | |
290 | } | |
291 | ||
c9657e70 SM |
292 | /* See inferior.h */ |
293 | ||
294 | struct inferior * | |
295 | find_inferior_ptid (ptid_t ptid) | |
296 | { | |
e99b03dc | 297 | return find_inferior_pid (ptid.pid ()); |
c9657e70 SM |
298 | } |
299 | ||
32990ada | 300 | /* See inferior.h. */ |
6c95b8df PA |
301 | |
302 | struct inferior * | |
303 | find_inferior_for_program_space (struct program_space *pspace) | |
304 | { | |
08036331 | 305 | struct inferior *cur_inf = current_inferior (); |
32990ada | 306 | |
08036331 PA |
307 | if (cur_inf->pspace == pspace) |
308 | return cur_inf; | |
6c95b8df | 309 | |
08036331 PA |
310 | for (inferior *inf : all_inferiors ()) |
311 | if (inf->pspace == pspace) | |
312 | return inf; | |
6c95b8df PA |
313 | |
314 | return NULL; | |
315 | } | |
316 | ||
b77209e0 PA |
317 | struct inferior * |
318 | iterate_over_inferiors (int (*callback) (struct inferior *, void *), | |
319 | void *data) | |
320 | { | |
08036331 PA |
321 | for (inferior *inf : all_inferiors_safe ()) |
322 | if ((*callback) (inf, data)) | |
323 | return inf; | |
b77209e0 PA |
324 | |
325 | return NULL; | |
326 | } | |
327 | ||
b77209e0 PA |
328 | int |
329 | have_inferiors (void) | |
330 | { | |
08036331 PA |
331 | for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ()) |
332 | return 1; | |
6c95b8df PA |
333 | |
334 | return 0; | |
b77209e0 PA |
335 | } |
336 | ||
8020350c DB |
337 | /* Return the number of live inferiors. We account for the case |
338 | where an inferior might have a non-zero pid but no threads, as | |
339 | in the middle of a 'mourn' operation. */ | |
340 | ||
c35b1492 | 341 | int |
8020350c | 342 | number_of_live_inferiors (void) |
c35b1492 | 343 | { |
8020350c | 344 | int num_inf = 0; |
6c95b8df | 345 | |
08036331 PA |
346 | for (inferior *inf : all_non_exited_inferiors ()) |
347 | if (target_has_execution_1 (ptid_t (inf->pid))) | |
348 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
349 | { | |
350 | /* Found a live thread in this inferior, go to the next | |
351 | inferior. */ | |
352 | ++num_inf; | |
353 | break; | |
354 | } | |
cd2effb2 | 355 | |
8020350c DB |
356 | return num_inf; |
357 | } | |
358 | ||
359 | /* Return true if there is at least one live inferior. */ | |
360 | ||
361 | int | |
362 | have_live_inferiors (void) | |
363 | { | |
364 | return number_of_live_inferiors () > 0; | |
6c95b8df PA |
365 | } |
366 | ||
bed8455c DE |
367 | /* Prune away any unused inferiors, and then prune away no longer used |
368 | program spaces. */ | |
6c95b8df PA |
369 | |
370 | void | |
371 | prune_inferiors (void) | |
372 | { | |
373 | struct inferior *ss, **ss_link; | |
6c95b8df PA |
374 | |
375 | ss = inferior_list; | |
376 | ss_link = &inferior_list; | |
377 | while (ss) | |
378 | { | |
3a3fd0fd | 379 | if (!ss->deletable () |
6c95b8df PA |
380 | || !ss->removable |
381 | || ss->pid != 0) | |
382 | { | |
383 | ss_link = &ss->next; | |
384 | ss = *ss_link; | |
385 | continue; | |
386 | } | |
387 | ||
388 | *ss_link = ss->next; | |
7a41607e | 389 | delete_inferior (ss); |
6c95b8df PA |
390 | ss = *ss_link; |
391 | } | |
6c95b8df PA |
392 | } |
393 | ||
394 | /* Simply returns the count of inferiors. */ | |
395 | ||
396 | int | |
397 | number_of_inferiors (void) | |
398 | { | |
08036331 PA |
399 | auto rng = all_inferiors (); |
400 | return std::distance (rng.begin (), rng.end ()); | |
c35b1492 PA |
401 | } |
402 | ||
db2b9fdd PA |
403 | /* Converts an inferior process id to a string. Like |
404 | target_pid_to_str, but special cases the null process. */ | |
405 | ||
a068643d | 406 | static std::string |
db2b9fdd PA |
407 | inferior_pid_to_str (int pid) |
408 | { | |
409 | if (pid != 0) | |
f2907e49 | 410 | return target_pid_to_str (ptid_t (pid)); |
db2b9fdd PA |
411 | else |
412 | return _("<null>"); | |
413 | } | |
414 | ||
4034d0ff AT |
415 | /* See inferior.h. */ |
416 | ||
417 | void | |
418 | print_selected_inferior (struct ui_out *uiout) | |
419 | { | |
4034d0ff | 420 | struct inferior *inf = current_inferior (); |
53488a6e | 421 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 422 | |
53488a6e TS |
423 | if (filename == NULL) |
424 | filename = _("<noexec>"); | |
112e8700 SM |
425 | |
426 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
a068643d | 427 | inf->num, inferior_pid_to_str (inf->pid).c_str (), filename); |
4034d0ff AT |
428 | } |
429 | ||
b77209e0 PA |
430 | /* Prints the list of inferiors and their details on UIOUT. This is a |
431 | version of 'info_inferior_command' suitable for use from MI. | |
432 | ||
c82c0b55 MS |
433 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
434 | inferiors that should be printed. Otherwise, all inferiors are | |
435 | printed. */ | |
436 | ||
437 | static void | |
1d12d88f | 438 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 | 439 | { |
8bb318c6 | 440 | int inf_count = 0; |
b77209e0 | 441 | |
8bb318c6 | 442 | /* Compute number of inferiors we will print. */ |
08036331 | 443 | for (inferior *inf : all_inferiors ()) |
8bb318c6 | 444 | { |
c82c0b55 | 445 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
446 | continue; |
447 | ||
448 | ++inf_count; | |
449 | } | |
450 | ||
451 | if (inf_count == 0) | |
452 | { | |
112e8700 | 453 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
454 | return; |
455 | } | |
456 | ||
4a2b031d | 457 | ui_out_emit_table table_emitter (uiout, 4, inf_count, "inferiors"); |
112e8700 SM |
458 | uiout->table_header (1, ui_left, "current", ""); |
459 | uiout->table_header (4, ui_left, "number", "Num"); | |
460 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
461 | uiout->table_header (17, ui_left, "exec", "Executable"); | |
b77209e0 | 462 | |
112e8700 | 463 | uiout->table_body (); |
08036331 | 464 | for (inferior *inf : all_inferiors ()) |
b77209e0 | 465 | { |
c82c0b55 | 466 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
467 | continue; |
468 | ||
2e783024 | 469 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 470 | |
6c95b8df | 471 | if (inf == current_inferior ()) |
112e8700 | 472 | uiout->field_string ("current", "*"); |
b77209e0 | 473 | else |
112e8700 | 474 | uiout->field_skip ("current"); |
b77209e0 | 475 | |
381befee | 476 | uiout->field_signed ("number", inf->num); |
6c95b8df | 477 | |
112e8700 | 478 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 479 | |
1f0c4988 | 480 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 481 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 482 | else |
112e8700 | 483 | uiout->field_skip ("exec"); |
6c95b8df PA |
484 | |
485 | /* Print extra info that isn't really fit to always present in | |
486 | tabular form. Currently we print the vfork parent/child | |
487 | relationships, if any. */ | |
488 | if (inf->vfork_parent) | |
489 | { | |
112e8700 | 490 | uiout->text (_("\n\tis vfork child of inferior ")); |
381befee | 491 | uiout->field_signed ("vfork-parent", inf->vfork_parent->num); |
6c95b8df PA |
492 | } |
493 | if (inf->vfork_child) | |
494 | { | |
112e8700 | 495 | uiout->text (_("\n\tis vfork parent of inferior ")); |
381befee | 496 | uiout->field_signed ("vfork-child", inf->vfork_child->num); |
6c95b8df | 497 | } |
b77209e0 | 498 | |
112e8700 | 499 | uiout->text ("\n"); |
b77209e0 | 500 | } |
b77209e0 PA |
501 | } |
502 | ||
2277426b | 503 | static void |
e503b191 | 504 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 505 | { |
2277426b | 506 | if (!args || !*args) |
af624141 | 507 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 508 | |
bfd28288 PA |
509 | number_or_range_parser parser (args); |
510 | while (!parser.finished ()) | |
af624141 | 511 | { |
bfd28288 | 512 | int num = parser.get_number (); |
2277426b | 513 | |
00431a78 PA |
514 | inferior *inf = find_inferior_id (num); |
515 | if (inf == NULL) | |
af624141 MS |
516 | { |
517 | warning (_("Inferior ID %d not known."), num); | |
518 | continue; | |
519 | } | |
2277426b | 520 | |
00431a78 | 521 | if (inf->pid == 0) |
e3ae3c43 PP |
522 | { |
523 | warning (_("Inferior ID %d is not running."), num); | |
524 | continue; | |
525 | } | |
2277426b | 526 | |
00431a78 PA |
527 | thread_info *tp = any_thread_of_inferior (inf); |
528 | if (tp == NULL) | |
af624141 MS |
529 | { |
530 | warning (_("Inferior ID %d has no threads."), num); | |
531 | continue; | |
532 | } | |
2277426b | 533 | |
00431a78 | 534 | switch_to_thread (tp); |
2277426b | 535 | |
af624141 MS |
536 | detach_command (NULL, from_tty); |
537 | } | |
2277426b PA |
538 | } |
539 | ||
540 | static void | |
e503b191 | 541 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 542 | { |
2277426b | 543 | if (!args || !*args) |
af624141 | 544 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 545 | |
bfd28288 PA |
546 | number_or_range_parser parser (args); |
547 | while (!parser.finished ()) | |
af624141 | 548 | { |
bfd28288 | 549 | int num = parser.get_number (); |
2277426b | 550 | |
00431a78 PA |
551 | inferior *inf = find_inferior_id (num); |
552 | if (inf == NULL) | |
af624141 MS |
553 | { |
554 | warning (_("Inferior ID %d not known."), num); | |
555 | continue; | |
556 | } | |
2277426b | 557 | |
00431a78 | 558 | if (inf->pid == 0) |
e3ae3c43 PP |
559 | { |
560 | warning (_("Inferior ID %d is not running."), num); | |
561 | continue; | |
562 | } | |
2277426b | 563 | |
00431a78 PA |
564 | thread_info *tp = any_thread_of_inferior (inf); |
565 | if (tp == NULL) | |
af624141 MS |
566 | { |
567 | warning (_("Inferior ID %d has no threads."), num); | |
568 | continue; | |
569 | } | |
2277426b | 570 | |
00431a78 | 571 | switch_to_thread (tp); |
2277426b | 572 | |
af624141 MS |
573 | target_kill (); |
574 | } | |
2277426b PA |
575 | |
576 | bfd_cache_close_all (); | |
577 | } | |
578 | ||
579 | static void | |
e503b191 | 580 | inferior_command (const char *args, int from_tty) |
2277426b | 581 | { |
6c95b8df PA |
582 | struct inferior *inf; |
583 | int num; | |
2277426b PA |
584 | |
585 | num = parse_and_eval_long (args); | |
586 | ||
6c95b8df PA |
587 | inf = find_inferior_id (num); |
588 | if (inf == NULL) | |
2277426b PA |
589 | error (_("Inferior ID %d not known."), num); |
590 | ||
6c95b8df | 591 | if (inf->pid != 0) |
2277426b | 592 | { |
00431a78 | 593 | if (inf != current_inferior ()) |
6c95b8df | 594 | { |
00431a78 PA |
595 | thread_info *tp = any_thread_of_inferior (inf); |
596 | if (tp == NULL) | |
6c95b8df | 597 | error (_("Inferior has no threads.")); |
2277426b | 598 | |
00431a78 | 599 | switch_to_thread (tp); |
6c95b8df PA |
600 | } |
601 | ||
76727919 | 602 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
603 | (USER_SELECTED_INFERIOR |
604 | | USER_SELECTED_THREAD | |
605 | | USER_SELECTED_FRAME); | |
2277426b | 606 | } |
6c95b8df PA |
607 | else |
608 | { | |
6c95b8df | 609 | set_current_inferior (inf); |
00431a78 | 610 | switch_to_no_thread (); |
6c95b8df | 611 | set_current_program_space (inf->pspace); |
2277426b | 612 | |
76727919 TT |
613 | gdb::observers::user_selected_context_changed.notify |
614 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
615 | } |
616 | } | |
617 | ||
b77209e0 PA |
618 | /* Print information about currently known inferiors. */ |
619 | ||
620 | static void | |
1d12d88f | 621 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 622 | { |
79a45e25 | 623 | print_inferior (current_uiout, args); |
b77209e0 PA |
624 | } |
625 | ||
6c95b8df PA |
626 | /* remove-inferior ID */ |
627 | ||
70221824 | 628 | static void |
0b39b52e | 629 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 630 | { |
af624141 MS |
631 | if (args == NULL || *args == '\0') |
632 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 633 | |
bfd28288 PA |
634 | number_or_range_parser parser (args); |
635 | while (!parser.finished ()) | |
af624141 | 636 | { |
bfd28288 PA |
637 | int num = parser.get_number (); |
638 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 639 | |
af624141 MS |
640 | if (inf == NULL) |
641 | { | |
642 | warning (_("Inferior ID %d not known."), num); | |
643 | continue; | |
644 | } | |
645 | ||
3a3fd0fd | 646 | if (!inf->deletable ()) |
af624141 | 647 | { |
eb2332d7 | 648 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
649 | continue; |
650 | } | |
8fa067af | 651 | |
af624141 MS |
652 | if (inf->pid != 0) |
653 | { | |
654 | warning (_("Can not remove active inferior %d."), num); | |
655 | continue; | |
656 | } | |
6c95b8df | 657 | |
7a41607e | 658 | delete_inferior (inf); |
af624141 | 659 | } |
6c95b8df PA |
660 | } |
661 | ||
a79b8f6e VP |
662 | struct inferior * |
663 | add_inferior_with_spaces (void) | |
664 | { | |
665 | struct address_space *aspace; | |
666 | struct program_space *pspace; | |
667 | struct inferior *inf; | |
6ecd4729 | 668 | struct gdbarch_info info; |
a79b8f6e VP |
669 | |
670 | /* If all inferiors share an address space on this system, this | |
671 | doesn't really return a new address space; otherwise, it | |
672 | really does. */ | |
673 | aspace = maybe_new_address_space (); | |
564b1e3f | 674 | pspace = new program_space (aspace); |
a79b8f6e VP |
675 | inf = add_inferior (0); |
676 | inf->pspace = pspace; | |
677 | inf->aspace = pspace->aspace; | |
678 | ||
6ecd4729 PA |
679 | /* Setup the inferior's initial arch, based on information obtained |
680 | from the global "set ..." options. */ | |
681 | gdbarch_info_init (&info); | |
682 | inf->gdbarch = gdbarch_find_by_info (info); | |
683 | /* The "set ..." options reject invalid settings, so we should | |
684 | always have a valid arch by now. */ | |
685 | gdb_assert (inf->gdbarch != NULL); | |
686 | ||
a79b8f6e VP |
687 | return inf; |
688 | } | |
6c95b8df PA |
689 | |
690 | /* add-inferior [-copies N] [-exec FILENAME] */ | |
691 | ||
70221824 | 692 | static void |
0b39b52e | 693 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
694 | { |
695 | int i, copies = 1; | |
773a1edc | 696 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 697 | symfile_add_flags add_flags = 0; |
6c95b8df | 698 | |
ecf45d2c SL |
699 | if (from_tty) |
700 | add_flags |= SYMFILE_VERBOSE; | |
701 | ||
6c95b8df PA |
702 | if (args) |
703 | { | |
773a1edc | 704 | gdb_argv built_argv (args); |
6c95b8df | 705 | |
773a1edc | 706 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
707 | { |
708 | if (**argv == '-') | |
709 | { | |
710 | if (strcmp (*argv, "-copies") == 0) | |
711 | { | |
712 | ++argv; | |
713 | if (!*argv) | |
714 | error (_("No argument to -copies")); | |
715 | copies = parse_and_eval_long (*argv); | |
716 | } | |
717 | else if (strcmp (*argv, "-exec") == 0) | |
718 | { | |
719 | ++argv; | |
720 | if (!*argv) | |
721 | error (_("No argument to -exec")); | |
773a1edc | 722 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
723 | } |
724 | } | |
725 | else | |
726 | error (_("Invalid argument")); | |
727 | } | |
728 | } | |
729 | ||
5ed8105e | 730 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
731 | |
732 | for (i = 0; i < copies; ++i) | |
733 | { | |
a79b8f6e | 734 | struct inferior *inf = add_inferior_with_spaces (); |
6c95b8df PA |
735 | |
736 | printf_filtered (_("Added inferior %d\n"), inf->num); | |
737 | ||
738 | if (exec != NULL) | |
739 | { | |
740 | /* Switch over temporarily, while reading executable and | |
1777feb0 | 741 | symbols.q. */ |
a79b8f6e | 742 | set_current_program_space (inf->pspace); |
6c95b8df | 743 | set_current_inferior (inf); |
00431a78 | 744 | switch_to_no_thread (); |
6c95b8df | 745 | |
773a1edc TT |
746 | exec_file_attach (exec.get (), from_tty); |
747 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
748 | } |
749 | } | |
6c95b8df PA |
750 | } |
751 | ||
752 | /* clone-inferior [-copies N] [ID] */ | |
753 | ||
70221824 | 754 | static void |
0b39b52e | 755 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
756 | { |
757 | int i, copies = 1; | |
6c95b8df | 758 | struct inferior *orginf = NULL; |
6c95b8df PA |
759 | |
760 | if (args) | |
761 | { | |
773a1edc | 762 | gdb_argv built_argv (args); |
6c95b8df | 763 | |
773a1edc | 764 | char **argv = built_argv.get (); |
6c95b8df PA |
765 | for (; *argv != NULL; argv++) |
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 | if (copies < 0) | |
777 | error (_("Invalid copies number")); | |
778 | } | |
779 | } | |
780 | else | |
781 | { | |
782 | if (orginf == NULL) | |
783 | { | |
784 | int num; | |
785 | ||
786 | /* The first non-option (-) argument specified the | |
787 | program space ID. */ | |
788 | num = parse_and_eval_long (*argv); | |
789 | orginf = find_inferior_id (num); | |
790 | ||
791 | if (orginf == NULL) | |
792 | error (_("Inferior ID %d not known."), num); | |
793 | continue; | |
794 | } | |
795 | else | |
796 | error (_("Invalid argument")); | |
797 | } | |
798 | } | |
799 | } | |
800 | ||
801 | /* If no inferior id was specified, then the user wants to clone the | |
802 | current inferior. */ | |
803 | if (orginf == NULL) | |
804 | orginf = current_inferior (); | |
805 | ||
5ed8105e | 806 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
807 | |
808 | for (i = 0; i < copies; ++i) | |
809 | { | |
810 | struct address_space *aspace; | |
811 | struct program_space *pspace; | |
812 | struct inferior *inf; | |
813 | ||
814 | /* If all inferiors share an address space on this system, this | |
815 | doesn't really return a new address space; otherwise, it | |
816 | really does. */ | |
817 | aspace = maybe_new_address_space (); | |
564b1e3f | 818 | pspace = new program_space (aspace); |
6c95b8df PA |
819 | inf = add_inferior (0); |
820 | inf->pspace = pspace; | |
821 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
822 | inf->gdbarch = orginf->gdbarch; |
823 | ||
824 | /* If the original inferior had a user specified target | |
825 | description, make the clone use it too. */ | |
826 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
827 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df PA |
828 | |
829 | printf_filtered (_("Added inferior %d.\n"), inf->num); | |
830 | ||
831 | set_current_inferior (inf); | |
00431a78 | 832 | switch_to_no_thread (); |
6c95b8df PA |
833 | clone_program_space (pspace, orginf->pspace); |
834 | } | |
6c95b8df PA |
835 | } |
836 | ||
b77209e0 PA |
837 | /* Print notices when new inferiors are created and die. */ |
838 | static void | |
839 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
840 | struct cmd_list_element *c, const char *value) | |
841 | { | |
842 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
843 | } | |
844 | ||
e3940304 PA |
845 | /* Return a new value for the selected inferior's id. */ |
846 | ||
847 | static struct value * | |
848 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
849 | void *ignore) | |
850 | { | |
851 | struct inferior *inf = current_inferior (); | |
852 | ||
853 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
854 | } | |
855 | ||
856 | /* Implementation of `$_inferior' variable. */ | |
857 | ||
858 | static const struct internalvar_funcs inferior_funcs = | |
859 | { | |
860 | inferior_id_make_value, | |
861 | NULL, | |
862 | NULL | |
863 | }; | |
864 | ||
6c95b8df PA |
865 | \f |
866 | ||
6c95b8df PA |
867 | void |
868 | initialize_inferiors (void) | |
869 | { | |
06da564e EZ |
870 | struct cmd_list_element *c = NULL; |
871 | ||
6c95b8df PA |
872 | /* There's always one inferior. Note that this function isn't an |
873 | automatic _initialize_foo function, since other _initialize_foo | |
874 | routines may need to install their per-inferior data keys. We | |
875 | can only allocate an inferior when all those modules have done | |
876 | that. Do this after initialize_progspace, due to the | |
877 | current_program_space reference. */ | |
f67c0c91 | 878 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 879 | current_inferior_->incref (); |
6c95b8df PA |
880 | current_inferior_->pspace = current_program_space; |
881 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
882 | /* The architecture will be initialized shortly, by |
883 | initialize_current_architecture. */ | |
6c95b8df | 884 | |
a3c25011 TT |
885 | add_info ("inferiors", info_inferiors_command, |
886 | _("Print a list of inferiors being managed.\n\ | |
887 | Usage: info inferiors [ID]...\n\ | |
888 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
889 | By default all inferiors are displayed.")); | |
b77209e0 | 890 | |
06da564e | 891 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 892 | Add a new inferior.\n\ |
a3c25011 | 893 | Usage: add-inferior [-copies N] [-exec FILENAME]\n\ |
af624141 | 894 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df PA |
895 | FILENAME is the file name of the executable to use\n\ |
896 | as main program.")); | |
06da564e | 897 | set_cmd_completer (c, filename_completer); |
6c95b8df | 898 | |
af624141 MS |
899 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
900 | Remove inferior ID (or list of IDs).\n\ | |
901 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
902 | |
903 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
904 | Clone inferior ID.\n\ | |
a3c25011 | 905 | Usage: clone-inferior [-copies N] [ID]\n\ |
6c95b8df PA |
906 | Add N copies of inferior ID. The new inferior has the same\n\ |
907 | executable loaded as the copied inferior. If -copies is not specified,\n\ | |
908 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
909 | that is cloned.")); | |
2277426b | 910 | |
af624141 | 911 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
912 | Detach from inferior ID (or list of IDS).\n\ |
913 | Usage; detach inferiors ID..."), | |
2277426b PA |
914 | &detachlist); |
915 | ||
af624141 | 916 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
917 | Kill inferior ID (or list of IDs).\n\ |
918 | Usage: kill inferiors ID..."), | |
2277426b PA |
919 | &killlist); |
920 | ||
921 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
922 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 923 | Usage: inferior ID\n\ |
2277426b PA |
924 | The new inferior ID must be currently known."), |
925 | &cmdlist); | |
6c95b8df PA |
926 | |
927 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
928 | &print_inferior_events, _("\ | |
e3abbe7e PW |
929 | Set printing of inferior events (such as inferior start and exit)."), _("\ |
930 | Show printing of inferior events (such as inferior start and exit)."), NULL, | |
6c95b8df PA |
931 | NULL, |
932 | show_print_inferior_events, | |
933 | &setprintlist, &showprintlist); | |
934 | ||
e3940304 | 935 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 936 | } |