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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2008-2020 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 | 81 | xfree (inf->args); |
6ecd4729 | 82 | target_desc_info_free (inf->tdesc_info); |
0550c955 PA |
83 | } |
84 | ||
85 | inferior::inferior (int pid_) | |
86 | : num (++highest_inferior_num), | |
87 | pid (pid_), | |
9a6c7d9c | 88 | environment (gdb_environ::from_host_environ ()), |
0550c955 PA |
89 | registry_data () |
90 | { | |
0550c955 | 91 | inferior_alloc_data (this); |
5b6d1e4f PA |
92 | |
93 | m_target_stack.push (get_dummy_target ()); | |
b77209e0 PA |
94 | } |
95 | ||
b77209e0 PA |
96 | struct inferior * |
97 | add_inferior_silent (int pid) | |
98 | { | |
0550c955 | 99 | inferior *inf = new inferior (pid); |
b05b1202 PA |
100 | |
101 | if (inferior_list == NULL) | |
102 | inferior_list = inf; | |
103 | else | |
104 | { | |
0550c955 | 105 | inferior *last; |
b05b1202 PA |
106 | |
107 | for (last = inferior_list; last->next != NULL; last = last->next) | |
108 | ; | |
109 | last->next = inf; | |
110 | } | |
b77209e0 | 111 | |
76727919 | 112 | gdb::observers::inferior_added.notify (inf); |
a79b8f6e | 113 | |
6c95b8df PA |
114 | if (pid != 0) |
115 | inferior_appeared (inf, pid); | |
a562dc8f | 116 | |
b77209e0 PA |
117 | return inf; |
118 | } | |
119 | ||
120 | struct inferior * | |
121 | add_inferior (int pid) | |
122 | { | |
123 | struct inferior *inf = add_inferior_silent (pid); | |
124 | ||
125 | if (print_inferior_events) | |
151bb4a5 PA |
126 | { |
127 | if (pid != 0) | |
128 | printf_unfiltered (_("[New inferior %d (%s)]\n"), | |
129 | inf->num, | |
a068643d | 130 | target_pid_to_str (ptid_t (pid)).c_str ()); |
151bb4a5 PA |
131 | else |
132 | printf_unfiltered (_("[New inferior %d]\n"), inf->num); | |
133 | } | |
b77209e0 PA |
134 | |
135 | return inf; | |
136 | } | |
137 | ||
a79b8f6e | 138 | void |
7a41607e | 139 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
140 | { |
141 | struct inferior *inf, *infprev; | |
b77209e0 PA |
142 | |
143 | infprev = NULL; | |
144 | ||
145 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 146 | if (inf == todel) |
b77209e0 PA |
147 | break; |
148 | ||
149 | if (!inf) | |
150 | return; | |
151 | ||
08036331 PA |
152 | for (thread_info *tp : inf->threads_safe ()) |
153 | delete_thread_silent (tp); | |
4a92f99b | 154 | |
7e1789f5 PA |
155 | if (infprev) |
156 | infprev->next = inf->next; | |
157 | else | |
158 | inferior_list = inf->next; | |
159 | ||
76727919 | 160 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 161 | |
7a41607e SM |
162 | /* If this program space is rendered useless, remove it. */ |
163 | if (program_space_empty_p (inf->pspace)) | |
381ce63f | 164 | delete inf->pspace; |
ef3f321b | 165 | |
0550c955 | 166 | delete inf; |
ef3f321b SM |
167 | } |
168 | ||
6c95b8df PA |
169 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
170 | exit of its threads. */ | |
171 | ||
172 | static void | |
173 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
174 | { | |
175 | struct inferior *inf; | |
6c95b8df PA |
176 | |
177 | for (inf = inferior_list; inf; inf = inf->next) | |
178 | if (inf == inftoex) | |
179 | break; | |
180 | ||
181 | if (!inf) | |
182 | return; | |
183 | ||
08036331 PA |
184 | for (thread_info *tp : inf->threads_safe ()) |
185 | { | |
186 | if (silent) | |
187 | delete_thread_silent (tp); | |
188 | else | |
189 | delete_thread (tp); | |
190 | } | |
6c95b8df | 191 | |
76727919 | 192 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
193 | |
194 | inf->pid = 0; | |
9ab8741a | 195 | inf->fake_pid_p = false; |
ef4a3395 PA |
196 | inf->priv = NULL; |
197 | ||
6c95b8df PA |
198 | if (inf->vfork_parent != NULL) |
199 | { | |
200 | inf->vfork_parent->vfork_child = NULL; | |
201 | inf->vfork_parent = NULL; | |
202 | } | |
68c9da30 PA |
203 | if (inf->vfork_child != NULL) |
204 | { | |
205 | inf->vfork_child->vfork_parent = NULL; | |
206 | inf->vfork_child = NULL; | |
207 | } | |
8cf64490 | 208 | |
68c9da30 | 209 | inf->pending_detach = 0; |
85046ae2 | 210 | /* Reset it. */ |
ee841dd8 | 211 | inf->control = inferior_control_state (NO_STOP_QUIETLY); |
66452beb PW |
212 | |
213 | /* Clear the register cache and the frame cache. */ | |
214 | registers_changed (); | |
215 | reinit_frame_cache (); | |
6c95b8df PA |
216 | } |
217 | ||
218 | void | |
00431a78 | 219 | exit_inferior (inferior *inf) |
6c95b8df | 220 | { |
6c95b8df | 221 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
222 | } |
223 | ||
00431a78 PA |
224 | void |
225 | exit_inferior_silent (inferior *inf) | |
226 | { | |
227 | exit_inferior_1 (inf, 1); | |
228 | } | |
229 | ||
bc09b0c1 SM |
230 | /* See inferior.h. */ |
231 | ||
b77209e0 | 232 | void |
bc09b0c1 | 233 | detach_inferior (inferior *inf) |
b77209e0 | 234 | { |
bc09b0c1 SM |
235 | /* Save the pid, since exit_inferior_1 will reset it. */ |
236 | int pid = inf->pid; | |
abbb1732 | 237 | |
3b462ec2 | 238 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
239 | |
240 | if (print_inferior_events) | |
f67c0c91 SDJ |
241 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
242 | inf->num, | |
a068643d | 243 | target_pid_to_str (ptid_t (pid)).c_str ()); |
b77209e0 PA |
244 | } |
245 | ||
6c95b8df PA |
246 | void |
247 | inferior_appeared (struct inferior *inf, int pid) | |
248 | { | |
08036331 PA |
249 | /* If this is the first inferior with threads, reset the global |
250 | thread id. */ | |
873657b9 | 251 | delete_exited_threads (); |
08036331 PA |
252 | if (!any_thread_p ()) |
253 | init_thread_list (); | |
254 | ||
6c95b8df | 255 | inf->pid = pid; |
2ddf4301 SM |
256 | inf->has_exit_code = 0; |
257 | inf->exit_code = 0; | |
6c95b8df | 258 | |
76727919 | 259 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
260 | } |
261 | ||
6c95b8df | 262 | struct inferior * |
b77209e0 PA |
263 | find_inferior_id (int num) |
264 | { | |
08036331 | 265 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
266 | if (inf->num == num) |
267 | return inf; | |
268 | ||
269 | return NULL; | |
270 | } | |
271 | ||
272 | struct inferior * | |
5b6d1e4f | 273 | find_inferior_pid (process_stratum_target *targ, int pid) |
b77209e0 | 274 | { |
6c95b8df PA |
275 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
276 | a bug somewhere else. There may be more than one with pid == 0, | |
277 | for instance. */ | |
278 | gdb_assert (pid != 0); | |
279 | ||
5b6d1e4f | 280 | for (inferior *inf : all_inferiors (targ)) |
b77209e0 PA |
281 | if (inf->pid == pid) |
282 | return inf; | |
283 | ||
284 | return NULL; | |
285 | } | |
286 | ||
c9657e70 SM |
287 | /* See inferior.h */ |
288 | ||
289 | struct inferior * | |
5b6d1e4f | 290 | find_inferior_ptid (process_stratum_target *targ, ptid_t ptid) |
c9657e70 | 291 | { |
5b6d1e4f | 292 | return find_inferior_pid (targ, ptid.pid ()); |
c9657e70 SM |
293 | } |
294 | ||
32990ada | 295 | /* See inferior.h. */ |
6c95b8df PA |
296 | |
297 | struct inferior * | |
298 | find_inferior_for_program_space (struct program_space *pspace) | |
299 | { | |
08036331 | 300 | struct inferior *cur_inf = current_inferior (); |
32990ada | 301 | |
08036331 PA |
302 | if (cur_inf->pspace == pspace) |
303 | return cur_inf; | |
6c95b8df | 304 | |
08036331 PA |
305 | for (inferior *inf : all_inferiors ()) |
306 | if (inf->pspace == pspace) | |
307 | return inf; | |
6c95b8df PA |
308 | |
309 | return NULL; | |
310 | } | |
311 | ||
b77209e0 PA |
312 | int |
313 | have_inferiors (void) | |
314 | { | |
08036331 PA |
315 | for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ()) |
316 | return 1; | |
6c95b8df PA |
317 | |
318 | return 0; | |
b77209e0 PA |
319 | } |
320 | ||
8020350c DB |
321 | /* Return the number of live inferiors. We account for the case |
322 | where an inferior might have a non-zero pid but no threads, as | |
323 | in the middle of a 'mourn' operation. */ | |
324 | ||
c35b1492 | 325 | int |
5b6d1e4f | 326 | number_of_live_inferiors (process_stratum_target *proc_target) |
c35b1492 | 327 | { |
8020350c | 328 | int num_inf = 0; |
6c95b8df | 329 | |
5b6d1e4f | 330 | for (inferior *inf : all_non_exited_inferiors (proc_target)) |
5018ce90 | 331 | if (inf->has_execution ()) |
08036331 PA |
332 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) |
333 | { | |
334 | /* Found a live thread in this inferior, go to the next | |
335 | inferior. */ | |
336 | ++num_inf; | |
337 | break; | |
338 | } | |
cd2effb2 | 339 | |
8020350c DB |
340 | return num_inf; |
341 | } | |
342 | ||
343 | /* Return true if there is at least one live inferior. */ | |
344 | ||
345 | int | |
346 | have_live_inferiors (void) | |
347 | { | |
5b6d1e4f | 348 | return number_of_live_inferiors (NULL) > 0; |
6c95b8df PA |
349 | } |
350 | ||
bed8455c DE |
351 | /* Prune away any unused inferiors, and then prune away no longer used |
352 | program spaces. */ | |
6c95b8df PA |
353 | |
354 | void | |
355 | prune_inferiors (void) | |
356 | { | |
908641f5 | 357 | inferior *ss; |
6c95b8df PA |
358 | |
359 | ss = inferior_list; | |
6c95b8df PA |
360 | while (ss) |
361 | { | |
3a3fd0fd | 362 | if (!ss->deletable () |
6c95b8df PA |
363 | || !ss->removable |
364 | || ss->pid != 0) | |
365 | { | |
908641f5 | 366 | ss = ss->next; |
6c95b8df PA |
367 | continue; |
368 | } | |
369 | ||
908641f5 | 370 | inferior *ss_next = ss->next; |
7a41607e | 371 | delete_inferior (ss); |
908641f5 | 372 | ss = ss_next; |
6c95b8df | 373 | } |
6c95b8df PA |
374 | } |
375 | ||
376 | /* Simply returns the count of inferiors. */ | |
377 | ||
378 | int | |
379 | number_of_inferiors (void) | |
380 | { | |
08036331 PA |
381 | auto rng = all_inferiors (); |
382 | return std::distance (rng.begin (), rng.end ()); | |
c35b1492 PA |
383 | } |
384 | ||
db2b9fdd PA |
385 | /* Converts an inferior process id to a string. Like |
386 | target_pid_to_str, but special cases the null process. */ | |
387 | ||
a068643d | 388 | static std::string |
db2b9fdd PA |
389 | inferior_pid_to_str (int pid) |
390 | { | |
391 | if (pid != 0) | |
f2907e49 | 392 | return target_pid_to_str (ptid_t (pid)); |
db2b9fdd PA |
393 | else |
394 | return _("<null>"); | |
395 | } | |
396 | ||
4034d0ff AT |
397 | /* See inferior.h. */ |
398 | ||
399 | void | |
400 | print_selected_inferior (struct ui_out *uiout) | |
401 | { | |
4034d0ff | 402 | struct inferior *inf = current_inferior (); |
53488a6e | 403 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 404 | |
53488a6e TS |
405 | if (filename == NULL) |
406 | filename = _("<noexec>"); | |
112e8700 SM |
407 | |
408 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
a068643d | 409 | inf->num, inferior_pid_to_str (inf->pid).c_str (), filename); |
4034d0ff AT |
410 | } |
411 | ||
121b3efd PA |
412 | /* Helper for print_inferior. Returns the 'connection-id' string for |
413 | PROC_TARGET. */ | |
414 | ||
415 | static std::string | |
416 | uiout_field_connection (process_stratum_target *proc_target) | |
417 | { | |
418 | if (proc_target == NULL) | |
419 | { | |
420 | return {}; | |
421 | } | |
422 | else if (proc_target->connection_string () != NULL) | |
423 | { | |
424 | return string_printf ("%d (%s %s)", | |
425 | proc_target->connection_number, | |
426 | proc_target->shortname (), | |
427 | proc_target->connection_string ()); | |
428 | } | |
429 | else | |
430 | { | |
431 | return string_printf ("%d (%s)", | |
432 | proc_target->connection_number, | |
433 | proc_target->shortname ()); | |
434 | } | |
435 | } | |
436 | ||
b77209e0 PA |
437 | /* Prints the list of inferiors and their details on UIOUT. This is a |
438 | version of 'info_inferior_command' suitable for use from MI. | |
439 | ||
c82c0b55 MS |
440 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
441 | inferiors that should be printed. Otherwise, all inferiors are | |
442 | printed. */ | |
443 | ||
444 | static void | |
1d12d88f | 445 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 | 446 | { |
8bb318c6 | 447 | int inf_count = 0; |
121b3efd | 448 | size_t connection_id_len = 20; |
b77209e0 | 449 | |
8bb318c6 | 450 | /* Compute number of inferiors we will print. */ |
08036331 | 451 | for (inferior *inf : all_inferiors ()) |
8bb318c6 | 452 | { |
c82c0b55 | 453 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
454 | continue; |
455 | ||
121b3efd PA |
456 | std::string conn = uiout_field_connection (inf->process_target ()); |
457 | if (connection_id_len < conn.size ()) | |
458 | connection_id_len = conn.size (); | |
459 | ||
8bb318c6 TT |
460 | ++inf_count; |
461 | } | |
462 | ||
463 | if (inf_count == 0) | |
464 | { | |
112e8700 | 465 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
466 | return; |
467 | } | |
468 | ||
121b3efd | 469 | ui_out_emit_table table_emitter (uiout, 5, inf_count, "inferiors"); |
112e8700 SM |
470 | uiout->table_header (1, ui_left, "current", ""); |
471 | uiout->table_header (4, ui_left, "number", "Num"); | |
472 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
121b3efd PA |
473 | uiout->table_header (connection_id_len, ui_left, |
474 | "connection-id", "Connection"); | |
112e8700 | 475 | uiout->table_header (17, ui_left, "exec", "Executable"); |
b77209e0 | 476 | |
112e8700 | 477 | uiout->table_body (); |
d9ebdab7 TBA |
478 | |
479 | /* Restore the current thread after the loop because we switch the | |
480 | inferior in the loop. */ | |
481 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
482 | inferior *current_inf = current_inferior (); | |
08036331 | 483 | for (inferior *inf : all_inferiors ()) |
b77209e0 | 484 | { |
c82c0b55 | 485 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
486 | continue; |
487 | ||
2e783024 | 488 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 489 | |
d9ebdab7 | 490 | if (inf == current_inf) |
112e8700 | 491 | uiout->field_string ("current", "*"); |
b77209e0 | 492 | else |
112e8700 | 493 | uiout->field_skip ("current"); |
b77209e0 | 494 | |
381befee | 495 | uiout->field_signed ("number", inf->num); |
6c95b8df | 496 | |
d9ebdab7 TBA |
497 | /* Because target_pid_to_str uses current_top_target, |
498 | switch the inferior. */ | |
499 | switch_to_inferior_no_thread (inf); | |
500 | ||
112e8700 | 501 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 502 | |
121b3efd PA |
503 | std::string conn = uiout_field_connection (inf->process_target ()); |
504 | uiout->field_string ("connection-id", conn.c_str ()); | |
505 | ||
1f0c4988 | 506 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 507 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 508 | else |
112e8700 | 509 | uiout->field_skip ("exec"); |
6c95b8df PA |
510 | |
511 | /* Print extra info that isn't really fit to always present in | |
512 | tabular form. Currently we print the vfork parent/child | |
513 | relationships, if any. */ | |
514 | if (inf->vfork_parent) | |
515 | { | |
112e8700 | 516 | uiout->text (_("\n\tis vfork child of inferior ")); |
381befee | 517 | uiout->field_signed ("vfork-parent", inf->vfork_parent->num); |
6c95b8df PA |
518 | } |
519 | if (inf->vfork_child) | |
520 | { | |
112e8700 | 521 | uiout->text (_("\n\tis vfork parent of inferior ")); |
381befee | 522 | uiout->field_signed ("vfork-child", inf->vfork_child->num); |
6c95b8df | 523 | } |
b77209e0 | 524 | |
112e8700 | 525 | uiout->text ("\n"); |
b77209e0 | 526 | } |
b77209e0 PA |
527 | } |
528 | ||
2277426b | 529 | static void |
e503b191 | 530 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 531 | { |
2277426b | 532 | if (!args || !*args) |
af624141 | 533 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 534 | |
bfd28288 PA |
535 | number_or_range_parser parser (args); |
536 | while (!parser.finished ()) | |
af624141 | 537 | { |
bfd28288 | 538 | int num = parser.get_number (); |
2277426b | 539 | |
00431a78 PA |
540 | inferior *inf = find_inferior_id (num); |
541 | if (inf == NULL) | |
af624141 MS |
542 | { |
543 | warning (_("Inferior ID %d not known."), num); | |
544 | continue; | |
545 | } | |
2277426b | 546 | |
00431a78 | 547 | if (inf->pid == 0) |
e3ae3c43 PP |
548 | { |
549 | warning (_("Inferior ID %d is not running."), num); | |
550 | continue; | |
551 | } | |
2277426b | 552 | |
00431a78 PA |
553 | thread_info *tp = any_thread_of_inferior (inf); |
554 | if (tp == NULL) | |
af624141 MS |
555 | { |
556 | warning (_("Inferior ID %d has no threads."), num); | |
557 | continue; | |
558 | } | |
2277426b | 559 | |
00431a78 | 560 | switch_to_thread (tp); |
2277426b | 561 | |
af624141 MS |
562 | detach_command (NULL, from_tty); |
563 | } | |
2277426b PA |
564 | } |
565 | ||
566 | static void | |
e503b191 | 567 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 568 | { |
2277426b | 569 | if (!args || !*args) |
af624141 | 570 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 571 | |
bfd28288 PA |
572 | number_or_range_parser parser (args); |
573 | while (!parser.finished ()) | |
af624141 | 574 | { |
bfd28288 | 575 | int num = parser.get_number (); |
2277426b | 576 | |
00431a78 PA |
577 | inferior *inf = find_inferior_id (num); |
578 | if (inf == NULL) | |
af624141 MS |
579 | { |
580 | warning (_("Inferior ID %d not known."), num); | |
581 | continue; | |
582 | } | |
2277426b | 583 | |
00431a78 | 584 | if (inf->pid == 0) |
e3ae3c43 PP |
585 | { |
586 | warning (_("Inferior ID %d is not running."), num); | |
587 | continue; | |
588 | } | |
2277426b | 589 | |
00431a78 PA |
590 | thread_info *tp = any_thread_of_inferior (inf); |
591 | if (tp == NULL) | |
af624141 MS |
592 | { |
593 | warning (_("Inferior ID %d has no threads."), num); | |
594 | continue; | |
595 | } | |
2277426b | 596 | |
00431a78 | 597 | switch_to_thread (tp); |
2277426b | 598 | |
af624141 MS |
599 | target_kill (); |
600 | } | |
2277426b PA |
601 | |
602 | bfd_cache_close_all (); | |
603 | } | |
604 | ||
db2d40f7 PA |
605 | /* See inferior.h. */ |
606 | ||
607 | void | |
608 | switch_to_inferior_no_thread (inferior *inf) | |
609 | { | |
610 | set_current_inferior (inf); | |
611 | switch_to_no_thread (); | |
612 | set_current_program_space (inf->pspace); | |
613 | } | |
614 | ||
2277426b | 615 | static void |
e503b191 | 616 | inferior_command (const char *args, int from_tty) |
2277426b | 617 | { |
6c95b8df PA |
618 | struct inferior *inf; |
619 | int num; | |
2277426b PA |
620 | |
621 | num = parse_and_eval_long (args); | |
622 | ||
6c95b8df PA |
623 | inf = find_inferior_id (num); |
624 | if (inf == NULL) | |
2277426b PA |
625 | error (_("Inferior ID %d not known."), num); |
626 | ||
6c95b8df | 627 | if (inf->pid != 0) |
2277426b | 628 | { |
00431a78 | 629 | if (inf != current_inferior ()) |
6c95b8df | 630 | { |
00431a78 PA |
631 | thread_info *tp = any_thread_of_inferior (inf); |
632 | if (tp == NULL) | |
6c95b8df | 633 | error (_("Inferior has no threads.")); |
2277426b | 634 | |
00431a78 | 635 | switch_to_thread (tp); |
6c95b8df PA |
636 | } |
637 | ||
76727919 | 638 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
639 | (USER_SELECTED_INFERIOR |
640 | | USER_SELECTED_THREAD | |
641 | | USER_SELECTED_FRAME); | |
2277426b | 642 | } |
6c95b8df PA |
643 | else |
644 | { | |
db2d40f7 | 645 | switch_to_inferior_no_thread (inf); |
2277426b | 646 | |
76727919 TT |
647 | gdb::observers::user_selected_context_changed.notify |
648 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
649 | } |
650 | } | |
651 | ||
b77209e0 PA |
652 | /* Print information about currently known inferiors. */ |
653 | ||
654 | static void | |
1d12d88f | 655 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 656 | { |
79a45e25 | 657 | print_inferior (current_uiout, args); |
b77209e0 PA |
658 | } |
659 | ||
6c95b8df PA |
660 | /* remove-inferior ID */ |
661 | ||
70221824 | 662 | static void |
0b39b52e | 663 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 664 | { |
af624141 MS |
665 | if (args == NULL || *args == '\0') |
666 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 667 | |
bfd28288 PA |
668 | number_or_range_parser parser (args); |
669 | while (!parser.finished ()) | |
af624141 | 670 | { |
bfd28288 PA |
671 | int num = parser.get_number (); |
672 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 673 | |
af624141 MS |
674 | if (inf == NULL) |
675 | { | |
676 | warning (_("Inferior ID %d not known."), num); | |
677 | continue; | |
678 | } | |
679 | ||
3a3fd0fd | 680 | if (!inf->deletable ()) |
af624141 | 681 | { |
eb2332d7 | 682 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
683 | continue; |
684 | } | |
8fa067af | 685 | |
af624141 MS |
686 | if (inf->pid != 0) |
687 | { | |
688 | warning (_("Can not remove active inferior %d."), num); | |
689 | continue; | |
690 | } | |
6c95b8df | 691 | |
7a41607e | 692 | delete_inferior (inf); |
af624141 | 693 | } |
6c95b8df PA |
694 | } |
695 | ||
a79b8f6e VP |
696 | struct inferior * |
697 | add_inferior_with_spaces (void) | |
698 | { | |
699 | struct address_space *aspace; | |
700 | struct program_space *pspace; | |
701 | struct inferior *inf; | |
6ecd4729 | 702 | struct gdbarch_info info; |
a79b8f6e VP |
703 | |
704 | /* If all inferiors share an address space on this system, this | |
705 | doesn't really return a new address space; otherwise, it | |
706 | really does. */ | |
707 | aspace = maybe_new_address_space (); | |
564b1e3f | 708 | pspace = new program_space (aspace); |
a79b8f6e VP |
709 | inf = add_inferior (0); |
710 | inf->pspace = pspace; | |
711 | inf->aspace = pspace->aspace; | |
712 | ||
6ecd4729 PA |
713 | /* Setup the inferior's initial arch, based on information obtained |
714 | from the global "set ..." options. */ | |
715 | gdbarch_info_init (&info); | |
716 | inf->gdbarch = gdbarch_find_by_info (info); | |
717 | /* The "set ..." options reject invalid settings, so we should | |
718 | always have a valid arch by now. */ | |
719 | gdb_assert (inf->gdbarch != NULL); | |
720 | ||
a79b8f6e VP |
721 | return inf; |
722 | } | |
6c95b8df | 723 | |
5b6d1e4f PA |
724 | /* Switch to inferior NEW_INF, a new inferior, and unless |
725 | NO_CONNECTION is true, push the process_stratum_target of ORG_INF | |
726 | to NEW_INF. */ | |
727 | ||
728 | static void | |
729 | switch_to_inferior_and_push_target (inferior *new_inf, | |
730 | bool no_connection, inferior *org_inf) | |
731 | { | |
732 | process_stratum_target *proc_target = org_inf->process_target (); | |
733 | ||
734 | /* Switch over temporarily, while reading executable and | |
735 | symbols. */ | |
736 | switch_to_inferior_no_thread (new_inf); | |
737 | ||
738 | /* Reuse the target for new inferior. */ | |
739 | if (!no_connection && proc_target != NULL) | |
121b3efd PA |
740 | { |
741 | push_target (proc_target); | |
742 | if (proc_target->connection_string () != NULL) | |
743 | printf_filtered (_("Added inferior %d on connection %d (%s %s)\n"), | |
744 | new_inf->num, | |
745 | proc_target->connection_number, | |
746 | proc_target->shortname (), | |
747 | proc_target->connection_string ()); | |
748 | else | |
749 | printf_filtered (_("Added inferior %d on connection %d (%s)\n"), | |
750 | new_inf->num, | |
751 | proc_target->connection_number, | |
752 | proc_target->shortname ()); | |
753 | } | |
754 | else | |
755 | printf_filtered (_("Added inferior %d\n"), new_inf->num); | |
5b6d1e4f PA |
756 | } |
757 | ||
758 | /* add-inferior [-copies N] [-exec FILENAME] [-no-connection] */ | |
6c95b8df | 759 | |
70221824 | 760 | static void |
0b39b52e | 761 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
762 | { |
763 | int i, copies = 1; | |
773a1edc | 764 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 765 | symfile_add_flags add_flags = 0; |
5b6d1e4f | 766 | bool no_connection = false; |
6c95b8df | 767 | |
ecf45d2c SL |
768 | if (from_tty) |
769 | add_flags |= SYMFILE_VERBOSE; | |
770 | ||
6c95b8df PA |
771 | if (args) |
772 | { | |
773a1edc | 773 | gdb_argv built_argv (args); |
6c95b8df | 774 | |
773a1edc | 775 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
776 | { |
777 | if (**argv == '-') | |
778 | { | |
779 | if (strcmp (*argv, "-copies") == 0) | |
780 | { | |
781 | ++argv; | |
782 | if (!*argv) | |
783 | error (_("No argument to -copies")); | |
784 | copies = parse_and_eval_long (*argv); | |
785 | } | |
5b6d1e4f PA |
786 | else if (strcmp (*argv, "-no-connection") == 0) |
787 | no_connection = true; | |
6c95b8df PA |
788 | else if (strcmp (*argv, "-exec") == 0) |
789 | { | |
790 | ++argv; | |
791 | if (!*argv) | |
792 | error (_("No argument to -exec")); | |
773a1edc | 793 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
794 | } |
795 | } | |
796 | else | |
797 | error (_("Invalid argument")); | |
798 | } | |
799 | } | |
800 | ||
5b6d1e4f PA |
801 | inferior *orginf = current_inferior (); |
802 | ||
5ed8105e | 803 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
804 | |
805 | for (i = 0; i < copies; ++i) | |
806 | { | |
5b6d1e4f | 807 | inferior *inf = add_inferior_with_spaces (); |
6c95b8df | 808 | |
5b6d1e4f | 809 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
6c95b8df PA |
810 | |
811 | if (exec != NULL) | |
812 | { | |
773a1edc TT |
813 | exec_file_attach (exec.get (), from_tty); |
814 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
815 | } |
816 | } | |
6c95b8df PA |
817 | } |
818 | ||
5b6d1e4f | 819 | /* clone-inferior [-copies N] [ID] [-no-connection] */ |
6c95b8df | 820 | |
70221824 | 821 | static void |
0b39b52e | 822 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
823 | { |
824 | int i, copies = 1; | |
6c95b8df | 825 | struct inferior *orginf = NULL; |
5b6d1e4f | 826 | bool no_connection = false; |
6c95b8df PA |
827 | |
828 | if (args) | |
829 | { | |
773a1edc | 830 | gdb_argv built_argv (args); |
6c95b8df | 831 | |
773a1edc | 832 | char **argv = built_argv.get (); |
6c95b8df PA |
833 | for (; *argv != NULL; argv++) |
834 | { | |
835 | if (**argv == '-') | |
836 | { | |
837 | if (strcmp (*argv, "-copies") == 0) | |
838 | { | |
839 | ++argv; | |
840 | if (!*argv) | |
841 | error (_("No argument to -copies")); | |
842 | copies = parse_and_eval_long (*argv); | |
843 | ||
844 | if (copies < 0) | |
845 | error (_("Invalid copies number")); | |
846 | } | |
5b6d1e4f PA |
847 | else if (strcmp (*argv, "-no-connection") == 0) |
848 | no_connection = true; | |
6c95b8df PA |
849 | } |
850 | else | |
851 | { | |
852 | if (orginf == NULL) | |
853 | { | |
854 | int num; | |
855 | ||
856 | /* The first non-option (-) argument specified the | |
857 | program space ID. */ | |
858 | num = parse_and_eval_long (*argv); | |
859 | orginf = find_inferior_id (num); | |
860 | ||
861 | if (orginf == NULL) | |
862 | error (_("Inferior ID %d not known."), num); | |
863 | continue; | |
864 | } | |
865 | else | |
866 | error (_("Invalid argument")); | |
867 | } | |
868 | } | |
869 | } | |
870 | ||
871 | /* If no inferior id was specified, then the user wants to clone the | |
872 | current inferior. */ | |
873 | if (orginf == NULL) | |
874 | orginf = current_inferior (); | |
875 | ||
5ed8105e | 876 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
877 | |
878 | for (i = 0; i < copies; ++i) | |
879 | { | |
880 | struct address_space *aspace; | |
881 | struct program_space *pspace; | |
882 | struct inferior *inf; | |
883 | ||
884 | /* If all inferiors share an address space on this system, this | |
885 | doesn't really return a new address space; otherwise, it | |
886 | really does. */ | |
887 | aspace = maybe_new_address_space (); | |
564b1e3f | 888 | pspace = new program_space (aspace); |
6c95b8df PA |
889 | inf = add_inferior (0); |
890 | inf->pspace = pspace; | |
891 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
892 | inf->gdbarch = orginf->gdbarch; |
893 | ||
5b6d1e4f PA |
894 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
895 | ||
6ecd4729 PA |
896 | /* If the original inferior had a user specified target |
897 | description, make the clone use it too. */ | |
898 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
899 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df | 900 | |
6c95b8df PA |
901 | clone_program_space (pspace, orginf->pspace); |
902 | } | |
6c95b8df PA |
903 | } |
904 | ||
b77209e0 PA |
905 | /* Print notices when new inferiors are created and die. */ |
906 | static void | |
907 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
908 | struct cmd_list_element *c, const char *value) | |
909 | { | |
910 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
911 | } | |
912 | ||
e3940304 PA |
913 | /* Return a new value for the selected inferior's id. */ |
914 | ||
915 | static struct value * | |
916 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
917 | void *ignore) | |
918 | { | |
919 | struct inferior *inf = current_inferior (); | |
920 | ||
921 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
922 | } | |
923 | ||
924 | /* Implementation of `$_inferior' variable. */ | |
925 | ||
926 | static const struct internalvar_funcs inferior_funcs = | |
927 | { | |
928 | inferior_id_make_value, | |
929 | NULL, | |
930 | NULL | |
931 | }; | |
932 | ||
6c95b8df PA |
933 | \f |
934 | ||
6c95b8df PA |
935 | void |
936 | initialize_inferiors (void) | |
937 | { | |
06da564e EZ |
938 | struct cmd_list_element *c = NULL; |
939 | ||
6c95b8df PA |
940 | /* There's always one inferior. Note that this function isn't an |
941 | automatic _initialize_foo function, since other _initialize_foo | |
942 | routines may need to install their per-inferior data keys. We | |
943 | can only allocate an inferior when all those modules have done | |
944 | that. Do this after initialize_progspace, due to the | |
945 | current_program_space reference. */ | |
f67c0c91 | 946 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 947 | current_inferior_->incref (); |
6c95b8df PA |
948 | current_inferior_->pspace = current_program_space; |
949 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
950 | /* The architecture will be initialized shortly, by |
951 | initialize_current_architecture. */ | |
6c95b8df | 952 | |
a3c25011 TT |
953 | add_info ("inferiors", info_inferiors_command, |
954 | _("Print a list of inferiors being managed.\n\ | |
955 | Usage: info inferiors [ID]...\n\ | |
956 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
957 | By default all inferiors are displayed.")); | |
b77209e0 | 958 | |
06da564e | 959 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 960 | Add a new inferior.\n\ |
5b6d1e4f | 961 | Usage: add-inferior [-copies N] [-exec FILENAME] [-no-connection]\n\ |
af624141 | 962 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df | 963 | FILENAME is the file name of the executable to use\n\ |
5b6d1e4f PA |
964 | as main program.\n\ |
965 | By default, the new inferior inherits the current inferior's connection.\n\ | |
966 | If -no-connection is specified, the new inferior begins with\n\ | |
967 | no target connection yet.")); | |
06da564e | 968 | set_cmd_completer (c, filename_completer); |
6c95b8df | 969 | |
af624141 MS |
970 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
971 | Remove inferior ID (or list of IDs).\n\ | |
972 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
973 | |
974 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
975 | Clone inferior ID.\n\ | |
5b6d1e4f PA |
976 | Usage: clone-inferior [-copies N] [-no-connection] [ID]\n\ |
977 | Add N copies of inferior ID. The new inferiors have the same\n\ | |
6c95b8df PA |
978 | executable loaded as the copied inferior. If -copies is not specified,\n\ |
979 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
5b6d1e4f PA |
980 | that is cloned.\n\ |
981 | By default, the new inferiors inherit the copied inferior's connection.\n\ | |
982 | If -no-connection is specified, the new inferiors begin with\n\ | |
983 | no target connection yet.")); | |
2277426b | 984 | |
af624141 | 985 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
986 | Detach from inferior ID (or list of IDS).\n\ |
987 | Usage; detach inferiors ID..."), | |
2277426b PA |
988 | &detachlist); |
989 | ||
af624141 | 990 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
991 | Kill inferior ID (or list of IDs).\n\ |
992 | Usage: kill inferiors ID..."), | |
2277426b PA |
993 | &killlist); |
994 | ||
995 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
996 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 997 | Usage: inferior ID\n\ |
2277426b PA |
998 | The new inferior ID must be currently known."), |
999 | &cmdlist); | |
6c95b8df PA |
1000 | |
1001 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
1002 | &print_inferior_events, _("\ | |
e3abbe7e PW |
1003 | Set printing of inferior events (such as inferior start and exit)."), _("\ |
1004 | Show printing of inferior events (such as inferior start and exit)."), NULL, | |
6c95b8df PA |
1005 | NULL, |
1006 | show_print_inferior_events, | |
1007 | &setprintlist, &showprintlist); | |
1008 | ||
e3940304 | 1009 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 1010 | } |