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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 | ||
05779d57 PA |
96 | void |
97 | inferior::set_tty (const char *terminal_name) | |
98 | { | |
99 | if (terminal_name != nullptr && *terminal_name != '\0') | |
100 | m_terminal = make_unique_xstrdup (terminal_name); | |
101 | else | |
102 | m_terminal = NULL; | |
103 | } | |
104 | ||
105 | const char * | |
106 | inferior::tty () | |
107 | { | |
108 | return m_terminal.get (); | |
109 | } | |
110 | ||
b77209e0 PA |
111 | struct inferior * |
112 | add_inferior_silent (int pid) | |
113 | { | |
0550c955 | 114 | inferior *inf = new inferior (pid); |
b05b1202 PA |
115 | |
116 | if (inferior_list == NULL) | |
117 | inferior_list = inf; | |
118 | else | |
119 | { | |
0550c955 | 120 | inferior *last; |
b05b1202 PA |
121 | |
122 | for (last = inferior_list; last->next != NULL; last = last->next) | |
123 | ; | |
124 | last->next = inf; | |
125 | } | |
b77209e0 | 126 | |
76727919 | 127 | gdb::observers::inferior_added.notify (inf); |
a79b8f6e | 128 | |
6c95b8df PA |
129 | if (pid != 0) |
130 | inferior_appeared (inf, pid); | |
a562dc8f | 131 | |
b77209e0 PA |
132 | return inf; |
133 | } | |
134 | ||
135 | struct inferior * | |
136 | add_inferior (int pid) | |
137 | { | |
138 | struct inferior *inf = add_inferior_silent (pid); | |
139 | ||
140 | if (print_inferior_events) | |
151bb4a5 PA |
141 | { |
142 | if (pid != 0) | |
143 | printf_unfiltered (_("[New inferior %d (%s)]\n"), | |
144 | inf->num, | |
a068643d | 145 | target_pid_to_str (ptid_t (pid)).c_str ()); |
151bb4a5 PA |
146 | else |
147 | printf_unfiltered (_("[New inferior %d]\n"), inf->num); | |
148 | } | |
b77209e0 PA |
149 | |
150 | return inf; | |
151 | } | |
152 | ||
a79b8f6e | 153 | void |
7a41607e | 154 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
155 | { |
156 | struct inferior *inf, *infprev; | |
b77209e0 PA |
157 | |
158 | infprev = NULL; | |
159 | ||
160 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 161 | if (inf == todel) |
b77209e0 PA |
162 | break; |
163 | ||
164 | if (!inf) | |
165 | return; | |
166 | ||
08036331 PA |
167 | for (thread_info *tp : inf->threads_safe ()) |
168 | delete_thread_silent (tp); | |
4a92f99b | 169 | |
7e1789f5 PA |
170 | if (infprev) |
171 | infprev->next = inf->next; | |
172 | else | |
173 | inferior_list = inf->next; | |
174 | ||
76727919 | 175 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 176 | |
7a41607e SM |
177 | /* If this program space is rendered useless, remove it. */ |
178 | if (program_space_empty_p (inf->pspace)) | |
381ce63f | 179 | delete inf->pspace; |
ef3f321b | 180 | |
0550c955 | 181 | delete inf; |
ef3f321b SM |
182 | } |
183 | ||
6c95b8df PA |
184 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
185 | exit of its threads. */ | |
186 | ||
187 | static void | |
188 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
189 | { | |
190 | struct inferior *inf; | |
6c95b8df PA |
191 | |
192 | for (inf = inferior_list; inf; inf = inf->next) | |
193 | if (inf == inftoex) | |
194 | break; | |
195 | ||
196 | if (!inf) | |
197 | return; | |
198 | ||
08036331 PA |
199 | for (thread_info *tp : inf->threads_safe ()) |
200 | { | |
201 | if (silent) | |
202 | delete_thread_silent (tp); | |
203 | else | |
204 | delete_thread (tp); | |
205 | } | |
6c95b8df | 206 | |
76727919 | 207 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
208 | |
209 | inf->pid = 0; | |
9ab8741a | 210 | inf->fake_pid_p = false; |
ef4a3395 PA |
211 | inf->priv = NULL; |
212 | ||
6c95b8df PA |
213 | if (inf->vfork_parent != NULL) |
214 | { | |
215 | inf->vfork_parent->vfork_child = NULL; | |
216 | inf->vfork_parent = NULL; | |
217 | } | |
68c9da30 PA |
218 | if (inf->vfork_child != NULL) |
219 | { | |
220 | inf->vfork_child->vfork_parent = NULL; | |
221 | inf->vfork_child = NULL; | |
222 | } | |
8cf64490 | 223 | |
68c9da30 | 224 | inf->pending_detach = 0; |
85046ae2 | 225 | /* Reset it. */ |
ee841dd8 | 226 | inf->control = inferior_control_state (NO_STOP_QUIETLY); |
66452beb PW |
227 | |
228 | /* Clear the register cache and the frame cache. */ | |
229 | registers_changed (); | |
230 | reinit_frame_cache (); | |
6c95b8df PA |
231 | } |
232 | ||
233 | void | |
00431a78 | 234 | exit_inferior (inferior *inf) |
6c95b8df | 235 | { |
6c95b8df | 236 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
237 | } |
238 | ||
00431a78 PA |
239 | void |
240 | exit_inferior_silent (inferior *inf) | |
241 | { | |
242 | exit_inferior_1 (inf, 1); | |
243 | } | |
244 | ||
bc09b0c1 SM |
245 | /* See inferior.h. */ |
246 | ||
b77209e0 | 247 | void |
bc09b0c1 | 248 | detach_inferior (inferior *inf) |
b77209e0 | 249 | { |
bc09b0c1 SM |
250 | /* Save the pid, since exit_inferior_1 will reset it. */ |
251 | int pid = inf->pid; | |
abbb1732 | 252 | |
3b462ec2 | 253 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
254 | |
255 | if (print_inferior_events) | |
f67c0c91 SDJ |
256 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
257 | inf->num, | |
a068643d | 258 | target_pid_to_str (ptid_t (pid)).c_str ()); |
b77209e0 PA |
259 | } |
260 | ||
6c95b8df PA |
261 | void |
262 | inferior_appeared (struct inferior *inf, int pid) | |
263 | { | |
08036331 PA |
264 | /* If this is the first inferior with threads, reset the global |
265 | thread id. */ | |
873657b9 | 266 | delete_exited_threads (); |
08036331 PA |
267 | if (!any_thread_p ()) |
268 | init_thread_list (); | |
269 | ||
6c95b8df | 270 | inf->pid = pid; |
2ddf4301 SM |
271 | inf->has_exit_code = 0; |
272 | inf->exit_code = 0; | |
6c95b8df | 273 | |
76727919 | 274 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
275 | } |
276 | ||
6c95b8df | 277 | struct inferior * |
b77209e0 PA |
278 | find_inferior_id (int num) |
279 | { | |
08036331 | 280 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
281 | if (inf->num == num) |
282 | return inf; | |
283 | ||
284 | return NULL; | |
285 | } | |
286 | ||
287 | struct inferior * | |
5b6d1e4f | 288 | find_inferior_pid (process_stratum_target *targ, int pid) |
b77209e0 | 289 | { |
6c95b8df PA |
290 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
291 | a bug somewhere else. There may be more than one with pid == 0, | |
292 | for instance. */ | |
293 | gdb_assert (pid != 0); | |
294 | ||
5b6d1e4f | 295 | for (inferior *inf : all_inferiors (targ)) |
b77209e0 PA |
296 | if (inf->pid == pid) |
297 | return inf; | |
298 | ||
299 | return NULL; | |
300 | } | |
301 | ||
c9657e70 SM |
302 | /* See inferior.h */ |
303 | ||
304 | struct inferior * | |
5b6d1e4f | 305 | find_inferior_ptid (process_stratum_target *targ, ptid_t ptid) |
c9657e70 | 306 | { |
5b6d1e4f | 307 | return find_inferior_pid (targ, ptid.pid ()); |
c9657e70 SM |
308 | } |
309 | ||
32990ada | 310 | /* See inferior.h. */ |
6c95b8df PA |
311 | |
312 | struct inferior * | |
313 | find_inferior_for_program_space (struct program_space *pspace) | |
314 | { | |
08036331 | 315 | struct inferior *cur_inf = current_inferior (); |
32990ada | 316 | |
08036331 PA |
317 | if (cur_inf->pspace == pspace) |
318 | return cur_inf; | |
6c95b8df | 319 | |
08036331 PA |
320 | for (inferior *inf : all_inferiors ()) |
321 | if (inf->pspace == pspace) | |
322 | return inf; | |
6c95b8df PA |
323 | |
324 | return NULL; | |
325 | } | |
326 | ||
b77209e0 PA |
327 | int |
328 | have_inferiors (void) | |
329 | { | |
08036331 PA |
330 | for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ()) |
331 | return 1; | |
6c95b8df PA |
332 | |
333 | return 0; | |
b77209e0 PA |
334 | } |
335 | ||
8020350c DB |
336 | /* Return the number of live inferiors. We account for the case |
337 | where an inferior might have a non-zero pid but no threads, as | |
338 | in the middle of a 'mourn' operation. */ | |
339 | ||
c35b1492 | 340 | int |
5b6d1e4f | 341 | number_of_live_inferiors (process_stratum_target *proc_target) |
c35b1492 | 342 | { |
8020350c | 343 | int num_inf = 0; |
6c95b8df | 344 | |
5b6d1e4f | 345 | for (inferior *inf : all_non_exited_inferiors (proc_target)) |
5018ce90 | 346 | if (inf->has_execution ()) |
08036331 PA |
347 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) |
348 | { | |
349 | /* Found a live thread in this inferior, go to the next | |
350 | inferior. */ | |
351 | ++num_inf; | |
352 | break; | |
353 | } | |
cd2effb2 | 354 | |
8020350c DB |
355 | return num_inf; |
356 | } | |
357 | ||
358 | /* Return true if there is at least one live inferior. */ | |
359 | ||
360 | int | |
361 | have_live_inferiors (void) | |
362 | { | |
5b6d1e4f | 363 | return number_of_live_inferiors (NULL) > 0; |
6c95b8df PA |
364 | } |
365 | ||
bed8455c DE |
366 | /* Prune away any unused inferiors, and then prune away no longer used |
367 | program spaces. */ | |
6c95b8df PA |
368 | |
369 | void | |
370 | prune_inferiors (void) | |
371 | { | |
908641f5 | 372 | inferior *ss; |
6c95b8df PA |
373 | |
374 | ss = inferior_list; | |
6c95b8df PA |
375 | while (ss) |
376 | { | |
3a3fd0fd | 377 | if (!ss->deletable () |
6c95b8df PA |
378 | || !ss->removable |
379 | || ss->pid != 0) | |
380 | { | |
908641f5 | 381 | ss = ss->next; |
6c95b8df PA |
382 | continue; |
383 | } | |
384 | ||
908641f5 | 385 | inferior *ss_next = ss->next; |
7a41607e | 386 | delete_inferior (ss); |
908641f5 | 387 | ss = ss_next; |
6c95b8df | 388 | } |
6c95b8df PA |
389 | } |
390 | ||
391 | /* Simply returns the count of inferiors. */ | |
392 | ||
393 | int | |
394 | number_of_inferiors (void) | |
395 | { | |
08036331 PA |
396 | auto rng = all_inferiors (); |
397 | return std::distance (rng.begin (), rng.end ()); | |
c35b1492 PA |
398 | } |
399 | ||
db2b9fdd PA |
400 | /* Converts an inferior process id to a string. Like |
401 | target_pid_to_str, but special cases the null process. */ | |
402 | ||
a068643d | 403 | static std::string |
db2b9fdd PA |
404 | inferior_pid_to_str (int pid) |
405 | { | |
406 | if (pid != 0) | |
f2907e49 | 407 | return target_pid_to_str (ptid_t (pid)); |
db2b9fdd PA |
408 | else |
409 | return _("<null>"); | |
410 | } | |
411 | ||
4034d0ff AT |
412 | /* See inferior.h. */ |
413 | ||
414 | void | |
415 | print_selected_inferior (struct ui_out *uiout) | |
416 | { | |
4034d0ff | 417 | struct inferior *inf = current_inferior (); |
53488a6e | 418 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 419 | |
53488a6e TS |
420 | if (filename == NULL) |
421 | filename = _("<noexec>"); | |
112e8700 SM |
422 | |
423 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
a068643d | 424 | inf->num, inferior_pid_to_str (inf->pid).c_str (), filename); |
4034d0ff AT |
425 | } |
426 | ||
121b3efd PA |
427 | /* Helper for print_inferior. Returns the 'connection-id' string for |
428 | PROC_TARGET. */ | |
429 | ||
430 | static std::string | |
431 | uiout_field_connection (process_stratum_target *proc_target) | |
432 | { | |
433 | if (proc_target == NULL) | |
434 | { | |
435 | return {}; | |
436 | } | |
437 | else if (proc_target->connection_string () != NULL) | |
438 | { | |
439 | return string_printf ("%d (%s %s)", | |
440 | proc_target->connection_number, | |
441 | proc_target->shortname (), | |
442 | proc_target->connection_string ()); | |
443 | } | |
444 | else | |
445 | { | |
446 | return string_printf ("%d (%s)", | |
447 | proc_target->connection_number, | |
448 | proc_target->shortname ()); | |
449 | } | |
450 | } | |
451 | ||
b77209e0 PA |
452 | /* Prints the list of inferiors and their details on UIOUT. This is a |
453 | version of 'info_inferior_command' suitable for use from MI. | |
454 | ||
c82c0b55 MS |
455 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
456 | inferiors that should be printed. Otherwise, all inferiors are | |
457 | printed. */ | |
458 | ||
459 | static void | |
1d12d88f | 460 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 | 461 | { |
8bb318c6 | 462 | int inf_count = 0; |
121b3efd | 463 | size_t connection_id_len = 20; |
b77209e0 | 464 | |
8bb318c6 | 465 | /* Compute number of inferiors we will print. */ |
08036331 | 466 | for (inferior *inf : all_inferiors ()) |
8bb318c6 | 467 | { |
c82c0b55 | 468 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
469 | continue; |
470 | ||
121b3efd PA |
471 | std::string conn = uiout_field_connection (inf->process_target ()); |
472 | if (connection_id_len < conn.size ()) | |
473 | connection_id_len = conn.size (); | |
474 | ||
8bb318c6 TT |
475 | ++inf_count; |
476 | } | |
477 | ||
478 | if (inf_count == 0) | |
479 | { | |
112e8700 | 480 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
481 | return; |
482 | } | |
483 | ||
121b3efd | 484 | ui_out_emit_table table_emitter (uiout, 5, inf_count, "inferiors"); |
112e8700 SM |
485 | uiout->table_header (1, ui_left, "current", ""); |
486 | uiout->table_header (4, ui_left, "number", "Num"); | |
487 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
121b3efd PA |
488 | uiout->table_header (connection_id_len, ui_left, |
489 | "connection-id", "Connection"); | |
112e8700 | 490 | uiout->table_header (17, ui_left, "exec", "Executable"); |
b77209e0 | 491 | |
112e8700 | 492 | uiout->table_body (); |
d9ebdab7 TBA |
493 | |
494 | /* Restore the current thread after the loop because we switch the | |
495 | inferior in the loop. */ | |
496 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
497 | inferior *current_inf = current_inferior (); | |
08036331 | 498 | for (inferior *inf : all_inferiors ()) |
b77209e0 | 499 | { |
c82c0b55 | 500 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
501 | continue; |
502 | ||
2e783024 | 503 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 504 | |
d9ebdab7 | 505 | if (inf == current_inf) |
112e8700 | 506 | uiout->field_string ("current", "*"); |
b77209e0 | 507 | else |
112e8700 | 508 | uiout->field_skip ("current"); |
b77209e0 | 509 | |
381befee | 510 | uiout->field_signed ("number", inf->num); |
6c95b8df | 511 | |
d9ebdab7 TBA |
512 | /* Because target_pid_to_str uses current_top_target, |
513 | switch the inferior. */ | |
514 | switch_to_inferior_no_thread (inf); | |
515 | ||
112e8700 | 516 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 517 | |
121b3efd PA |
518 | std::string conn = uiout_field_connection (inf->process_target ()); |
519 | uiout->field_string ("connection-id", conn.c_str ()); | |
520 | ||
1f0c4988 | 521 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 522 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 523 | else |
112e8700 | 524 | uiout->field_skip ("exec"); |
6c95b8df PA |
525 | |
526 | /* Print extra info that isn't really fit to always present in | |
527 | tabular form. Currently we print the vfork parent/child | |
528 | relationships, if any. */ | |
529 | if (inf->vfork_parent) | |
530 | { | |
112e8700 | 531 | uiout->text (_("\n\tis vfork child of inferior ")); |
381befee | 532 | uiout->field_signed ("vfork-parent", inf->vfork_parent->num); |
6c95b8df PA |
533 | } |
534 | if (inf->vfork_child) | |
535 | { | |
112e8700 | 536 | uiout->text (_("\n\tis vfork parent of inferior ")); |
381befee | 537 | uiout->field_signed ("vfork-child", inf->vfork_child->num); |
6c95b8df | 538 | } |
b77209e0 | 539 | |
112e8700 | 540 | uiout->text ("\n"); |
b77209e0 | 541 | } |
b77209e0 PA |
542 | } |
543 | ||
2277426b | 544 | static void |
e503b191 | 545 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 546 | { |
2277426b | 547 | if (!args || !*args) |
af624141 | 548 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 549 | |
bfd28288 PA |
550 | number_or_range_parser parser (args); |
551 | while (!parser.finished ()) | |
af624141 | 552 | { |
bfd28288 | 553 | int num = parser.get_number (); |
2277426b | 554 | |
00431a78 PA |
555 | inferior *inf = find_inferior_id (num); |
556 | if (inf == NULL) | |
af624141 MS |
557 | { |
558 | warning (_("Inferior ID %d not known."), num); | |
559 | continue; | |
560 | } | |
2277426b | 561 | |
00431a78 | 562 | if (inf->pid == 0) |
e3ae3c43 PP |
563 | { |
564 | warning (_("Inferior ID %d is not running."), num); | |
565 | continue; | |
566 | } | |
2277426b | 567 | |
00431a78 PA |
568 | thread_info *tp = any_thread_of_inferior (inf); |
569 | if (tp == NULL) | |
af624141 MS |
570 | { |
571 | warning (_("Inferior ID %d has no threads."), num); | |
572 | continue; | |
573 | } | |
2277426b | 574 | |
00431a78 | 575 | switch_to_thread (tp); |
2277426b | 576 | |
af624141 MS |
577 | detach_command (NULL, from_tty); |
578 | } | |
2277426b PA |
579 | } |
580 | ||
581 | static void | |
e503b191 | 582 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 583 | { |
2277426b | 584 | if (!args || !*args) |
af624141 | 585 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 586 | |
bfd28288 PA |
587 | number_or_range_parser parser (args); |
588 | while (!parser.finished ()) | |
af624141 | 589 | { |
bfd28288 | 590 | int num = parser.get_number (); |
2277426b | 591 | |
00431a78 PA |
592 | inferior *inf = find_inferior_id (num); |
593 | if (inf == NULL) | |
af624141 MS |
594 | { |
595 | warning (_("Inferior ID %d not known."), num); | |
596 | continue; | |
597 | } | |
2277426b | 598 | |
00431a78 | 599 | if (inf->pid == 0) |
e3ae3c43 PP |
600 | { |
601 | warning (_("Inferior ID %d is not running."), num); | |
602 | continue; | |
603 | } | |
2277426b | 604 | |
00431a78 PA |
605 | thread_info *tp = any_thread_of_inferior (inf); |
606 | if (tp == NULL) | |
af624141 MS |
607 | { |
608 | warning (_("Inferior ID %d has no threads."), num); | |
609 | continue; | |
610 | } | |
2277426b | 611 | |
00431a78 | 612 | switch_to_thread (tp); |
2277426b | 613 | |
af624141 MS |
614 | target_kill (); |
615 | } | |
2277426b PA |
616 | |
617 | bfd_cache_close_all (); | |
618 | } | |
619 | ||
db2d40f7 PA |
620 | /* See inferior.h. */ |
621 | ||
622 | void | |
623 | switch_to_inferior_no_thread (inferior *inf) | |
624 | { | |
625 | set_current_inferior (inf); | |
626 | switch_to_no_thread (); | |
627 | set_current_program_space (inf->pspace); | |
628 | } | |
629 | ||
2277426b | 630 | static void |
e503b191 | 631 | inferior_command (const char *args, int from_tty) |
2277426b | 632 | { |
6c95b8df PA |
633 | struct inferior *inf; |
634 | int num; | |
2277426b PA |
635 | |
636 | num = parse_and_eval_long (args); | |
637 | ||
6c95b8df PA |
638 | inf = find_inferior_id (num); |
639 | if (inf == NULL) | |
2277426b PA |
640 | error (_("Inferior ID %d not known."), num); |
641 | ||
6c95b8df | 642 | if (inf->pid != 0) |
2277426b | 643 | { |
00431a78 | 644 | if (inf != current_inferior ()) |
6c95b8df | 645 | { |
00431a78 PA |
646 | thread_info *tp = any_thread_of_inferior (inf); |
647 | if (tp == NULL) | |
6c95b8df | 648 | error (_("Inferior has no threads.")); |
2277426b | 649 | |
00431a78 | 650 | switch_to_thread (tp); |
6c95b8df PA |
651 | } |
652 | ||
76727919 | 653 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
654 | (USER_SELECTED_INFERIOR |
655 | | USER_SELECTED_THREAD | |
656 | | USER_SELECTED_FRAME); | |
2277426b | 657 | } |
6c95b8df PA |
658 | else |
659 | { | |
db2d40f7 | 660 | switch_to_inferior_no_thread (inf); |
2277426b | 661 | |
76727919 TT |
662 | gdb::observers::user_selected_context_changed.notify |
663 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
664 | } |
665 | } | |
666 | ||
b77209e0 PA |
667 | /* Print information about currently known inferiors. */ |
668 | ||
669 | static void | |
1d12d88f | 670 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 671 | { |
79a45e25 | 672 | print_inferior (current_uiout, args); |
b77209e0 PA |
673 | } |
674 | ||
6c95b8df PA |
675 | /* remove-inferior ID */ |
676 | ||
70221824 | 677 | static void |
0b39b52e | 678 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 679 | { |
af624141 MS |
680 | if (args == NULL || *args == '\0') |
681 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 682 | |
bfd28288 PA |
683 | number_or_range_parser parser (args); |
684 | while (!parser.finished ()) | |
af624141 | 685 | { |
bfd28288 PA |
686 | int num = parser.get_number (); |
687 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 688 | |
af624141 MS |
689 | if (inf == NULL) |
690 | { | |
691 | warning (_("Inferior ID %d not known."), num); | |
692 | continue; | |
693 | } | |
694 | ||
3a3fd0fd | 695 | if (!inf->deletable ()) |
af624141 | 696 | { |
eb2332d7 | 697 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
698 | continue; |
699 | } | |
8fa067af | 700 | |
af624141 MS |
701 | if (inf->pid != 0) |
702 | { | |
703 | warning (_("Can not remove active inferior %d."), num); | |
704 | continue; | |
705 | } | |
6c95b8df | 706 | |
7a41607e | 707 | delete_inferior (inf); |
af624141 | 708 | } |
6c95b8df PA |
709 | } |
710 | ||
a79b8f6e VP |
711 | struct inferior * |
712 | add_inferior_with_spaces (void) | |
713 | { | |
714 | struct address_space *aspace; | |
715 | struct program_space *pspace; | |
716 | struct inferior *inf; | |
6ecd4729 | 717 | struct gdbarch_info info; |
a79b8f6e VP |
718 | |
719 | /* If all inferiors share an address space on this system, this | |
720 | doesn't really return a new address space; otherwise, it | |
721 | really does. */ | |
722 | aspace = maybe_new_address_space (); | |
564b1e3f | 723 | pspace = new program_space (aspace); |
a79b8f6e VP |
724 | inf = add_inferior (0); |
725 | inf->pspace = pspace; | |
726 | inf->aspace = pspace->aspace; | |
727 | ||
6ecd4729 PA |
728 | /* Setup the inferior's initial arch, based on information obtained |
729 | from the global "set ..." options. */ | |
730 | gdbarch_info_init (&info); | |
731 | inf->gdbarch = gdbarch_find_by_info (info); | |
732 | /* The "set ..." options reject invalid settings, so we should | |
733 | always have a valid arch by now. */ | |
734 | gdb_assert (inf->gdbarch != NULL); | |
735 | ||
a79b8f6e VP |
736 | return inf; |
737 | } | |
6c95b8df | 738 | |
5b6d1e4f PA |
739 | /* Switch to inferior NEW_INF, a new inferior, and unless |
740 | NO_CONNECTION is true, push the process_stratum_target of ORG_INF | |
741 | to NEW_INF. */ | |
742 | ||
743 | static void | |
744 | switch_to_inferior_and_push_target (inferior *new_inf, | |
745 | bool no_connection, inferior *org_inf) | |
746 | { | |
747 | process_stratum_target *proc_target = org_inf->process_target (); | |
748 | ||
749 | /* Switch over temporarily, while reading executable and | |
750 | symbols. */ | |
751 | switch_to_inferior_no_thread (new_inf); | |
752 | ||
753 | /* Reuse the target for new inferior. */ | |
754 | if (!no_connection && proc_target != NULL) | |
121b3efd PA |
755 | { |
756 | push_target (proc_target); | |
757 | if (proc_target->connection_string () != NULL) | |
758 | printf_filtered (_("Added inferior %d on connection %d (%s %s)\n"), | |
759 | new_inf->num, | |
760 | proc_target->connection_number, | |
761 | proc_target->shortname (), | |
762 | proc_target->connection_string ()); | |
763 | else | |
764 | printf_filtered (_("Added inferior %d on connection %d (%s)\n"), | |
765 | new_inf->num, | |
766 | proc_target->connection_number, | |
767 | proc_target->shortname ()); | |
768 | } | |
769 | else | |
770 | printf_filtered (_("Added inferior %d\n"), new_inf->num); | |
5b6d1e4f PA |
771 | } |
772 | ||
773 | /* add-inferior [-copies N] [-exec FILENAME] [-no-connection] */ | |
6c95b8df | 774 | |
70221824 | 775 | static void |
0b39b52e | 776 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
777 | { |
778 | int i, copies = 1; | |
773a1edc | 779 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 780 | symfile_add_flags add_flags = 0; |
5b6d1e4f | 781 | bool no_connection = false; |
6c95b8df | 782 | |
ecf45d2c SL |
783 | if (from_tty) |
784 | add_flags |= SYMFILE_VERBOSE; | |
785 | ||
6c95b8df PA |
786 | if (args) |
787 | { | |
773a1edc | 788 | gdb_argv built_argv (args); |
6c95b8df | 789 | |
773a1edc | 790 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
791 | { |
792 | if (**argv == '-') | |
793 | { | |
794 | if (strcmp (*argv, "-copies") == 0) | |
795 | { | |
796 | ++argv; | |
797 | if (!*argv) | |
798 | error (_("No argument to -copies")); | |
799 | copies = parse_and_eval_long (*argv); | |
800 | } | |
5b6d1e4f PA |
801 | else if (strcmp (*argv, "-no-connection") == 0) |
802 | no_connection = true; | |
6c95b8df PA |
803 | else if (strcmp (*argv, "-exec") == 0) |
804 | { | |
805 | ++argv; | |
806 | if (!*argv) | |
807 | error (_("No argument to -exec")); | |
773a1edc | 808 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
809 | } |
810 | } | |
811 | else | |
812 | error (_("Invalid argument")); | |
813 | } | |
814 | } | |
815 | ||
5b6d1e4f PA |
816 | inferior *orginf = current_inferior (); |
817 | ||
5ed8105e | 818 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
819 | |
820 | for (i = 0; i < copies; ++i) | |
821 | { | |
5b6d1e4f | 822 | inferior *inf = add_inferior_with_spaces (); |
6c95b8df | 823 | |
5b6d1e4f | 824 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
6c95b8df PA |
825 | |
826 | if (exec != NULL) | |
827 | { | |
773a1edc TT |
828 | exec_file_attach (exec.get (), from_tty); |
829 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
830 | } |
831 | } | |
6c95b8df PA |
832 | } |
833 | ||
5b6d1e4f | 834 | /* clone-inferior [-copies N] [ID] [-no-connection] */ |
6c95b8df | 835 | |
70221824 | 836 | static void |
0b39b52e | 837 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
838 | { |
839 | int i, copies = 1; | |
6c95b8df | 840 | struct inferior *orginf = NULL; |
5b6d1e4f | 841 | bool no_connection = false; |
6c95b8df PA |
842 | |
843 | if (args) | |
844 | { | |
773a1edc | 845 | gdb_argv built_argv (args); |
6c95b8df | 846 | |
773a1edc | 847 | char **argv = built_argv.get (); |
6c95b8df PA |
848 | for (; *argv != NULL; argv++) |
849 | { | |
850 | if (**argv == '-') | |
851 | { | |
852 | if (strcmp (*argv, "-copies") == 0) | |
853 | { | |
854 | ++argv; | |
855 | if (!*argv) | |
856 | error (_("No argument to -copies")); | |
857 | copies = parse_and_eval_long (*argv); | |
858 | ||
859 | if (copies < 0) | |
860 | error (_("Invalid copies number")); | |
861 | } | |
5b6d1e4f PA |
862 | else if (strcmp (*argv, "-no-connection") == 0) |
863 | no_connection = true; | |
6c95b8df PA |
864 | } |
865 | else | |
866 | { | |
867 | if (orginf == NULL) | |
868 | { | |
869 | int num; | |
870 | ||
871 | /* The first non-option (-) argument specified the | |
872 | program space ID. */ | |
873 | num = parse_and_eval_long (*argv); | |
874 | orginf = find_inferior_id (num); | |
875 | ||
876 | if (orginf == NULL) | |
877 | error (_("Inferior ID %d not known."), num); | |
878 | continue; | |
879 | } | |
880 | else | |
881 | error (_("Invalid argument")); | |
882 | } | |
883 | } | |
884 | } | |
885 | ||
886 | /* If no inferior id was specified, then the user wants to clone the | |
887 | current inferior. */ | |
888 | if (orginf == NULL) | |
889 | orginf = current_inferior (); | |
890 | ||
5ed8105e | 891 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
892 | |
893 | for (i = 0; i < copies; ++i) | |
894 | { | |
895 | struct address_space *aspace; | |
896 | struct program_space *pspace; | |
897 | struct inferior *inf; | |
898 | ||
899 | /* If all inferiors share an address space on this system, this | |
900 | doesn't really return a new address space; otherwise, it | |
901 | really does. */ | |
902 | aspace = maybe_new_address_space (); | |
564b1e3f | 903 | pspace = new program_space (aspace); |
6c95b8df PA |
904 | inf = add_inferior (0); |
905 | inf->pspace = pspace; | |
906 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
907 | inf->gdbarch = orginf->gdbarch; |
908 | ||
5b6d1e4f PA |
909 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
910 | ||
6ecd4729 PA |
911 | /* If the original inferior had a user specified target |
912 | description, make the clone use it too. */ | |
913 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
914 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df | 915 | |
6c95b8df PA |
916 | clone_program_space (pspace, orginf->pspace); |
917 | } | |
6c95b8df PA |
918 | } |
919 | ||
b77209e0 PA |
920 | /* Print notices when new inferiors are created and die. */ |
921 | static void | |
922 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
923 | struct cmd_list_element *c, const char *value) | |
924 | { | |
925 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
926 | } | |
927 | ||
e3940304 PA |
928 | /* Return a new value for the selected inferior's id. */ |
929 | ||
930 | static struct value * | |
931 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
932 | void *ignore) | |
933 | { | |
934 | struct inferior *inf = current_inferior (); | |
935 | ||
936 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
937 | } | |
938 | ||
939 | /* Implementation of `$_inferior' variable. */ | |
940 | ||
941 | static const struct internalvar_funcs inferior_funcs = | |
942 | { | |
943 | inferior_id_make_value, | |
944 | NULL, | |
945 | NULL | |
946 | }; | |
947 | ||
6c95b8df PA |
948 | \f |
949 | ||
6c95b8df PA |
950 | void |
951 | initialize_inferiors (void) | |
952 | { | |
06da564e EZ |
953 | struct cmd_list_element *c = NULL; |
954 | ||
6c95b8df PA |
955 | /* There's always one inferior. Note that this function isn't an |
956 | automatic _initialize_foo function, since other _initialize_foo | |
957 | routines may need to install their per-inferior data keys. We | |
958 | can only allocate an inferior when all those modules have done | |
959 | that. Do this after initialize_progspace, due to the | |
960 | current_program_space reference. */ | |
f67c0c91 | 961 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 962 | current_inferior_->incref (); |
6c95b8df PA |
963 | current_inferior_->pspace = current_program_space; |
964 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
965 | /* The architecture will be initialized shortly, by |
966 | initialize_current_architecture. */ | |
6c95b8df | 967 | |
a3c25011 TT |
968 | add_info ("inferiors", info_inferiors_command, |
969 | _("Print a list of inferiors being managed.\n\ | |
970 | Usage: info inferiors [ID]...\n\ | |
971 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
972 | By default all inferiors are displayed.")); | |
b77209e0 | 973 | |
06da564e | 974 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 975 | Add a new inferior.\n\ |
5b6d1e4f | 976 | Usage: add-inferior [-copies N] [-exec FILENAME] [-no-connection]\n\ |
af624141 | 977 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df | 978 | FILENAME is the file name of the executable to use\n\ |
5b6d1e4f PA |
979 | as main program.\n\ |
980 | By default, the new inferior inherits the current inferior's connection.\n\ | |
981 | If -no-connection is specified, the new inferior begins with\n\ | |
982 | no target connection yet.")); | |
06da564e | 983 | set_cmd_completer (c, filename_completer); |
6c95b8df | 984 | |
af624141 MS |
985 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
986 | Remove inferior ID (or list of IDs).\n\ | |
987 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
988 | |
989 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
990 | Clone inferior ID.\n\ | |
5b6d1e4f PA |
991 | Usage: clone-inferior [-copies N] [-no-connection] [ID]\n\ |
992 | Add N copies of inferior ID. The new inferiors have the same\n\ | |
6c95b8df PA |
993 | executable loaded as the copied inferior. If -copies is not specified,\n\ |
994 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
5b6d1e4f PA |
995 | that is cloned.\n\ |
996 | By default, the new inferiors inherit the copied inferior's connection.\n\ | |
997 | If -no-connection is specified, the new inferiors begin with\n\ | |
998 | no target connection yet.")); | |
2277426b | 999 | |
af624141 | 1000 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
1001 | Detach from inferior ID (or list of IDS).\n\ |
1002 | Usage; detach inferiors ID..."), | |
2277426b PA |
1003 | &detachlist); |
1004 | ||
af624141 | 1005 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
1006 | Kill inferior ID (or list of IDs).\n\ |
1007 | Usage: kill inferiors ID..."), | |
2277426b PA |
1008 | &killlist); |
1009 | ||
1010 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
1011 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 1012 | Usage: inferior ID\n\ |
2277426b PA |
1013 | The new inferior ID must be currently known."), |
1014 | &cmdlist); | |
6c95b8df PA |
1015 | |
1016 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
1017 | &print_inferior_events, _("\ | |
e3abbe7e PW |
1018 | Set printing of inferior events (such as inferior start and exit)."), _("\ |
1019 | Show printing of inferior events (such as inferior start and exit)."), NULL, | |
6c95b8df PA |
1020 | NULL, |
1021 | show_print_inferior_events, | |
1022 | &setprintlist, &showprintlist); | |
1023 | ||
e3940304 | 1024 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 1025 | } |