Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
9b254dd1 | 4 | 2000, 2001, 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc. |
8926118c | 5 | |
b6ba6518 | 6 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
c906108c | 7 | |
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "environ.h" | |
28 | #include "value.h" | |
29 | #include "target.h" | |
30 | #include "gdbthread.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c SS |
32 | #include "command.h" |
33 | #include "gdbcmd.h" | |
4e052eda | 34 | #include "regcache.h" |
5b7f31a4 | 35 | #include "gdb.h" |
b66d6d2e | 36 | #include "gdb_string.h" |
c906108c SS |
37 | |
38 | #include <ctype.h> | |
39 | #include <sys/types.h> | |
40 | #include <signal.h> | |
8b93c638 | 41 | #include "ui-out.h" |
683f2885 | 42 | #include "observer.h" |
d4fc5b1e | 43 | #include "annotate.h" |
94cc34af PA |
44 | #include "cli/cli-decode.h" |
45 | ||
0d06e24b | 46 | /* Definition of struct thread_info exported to gdbthread.h */ |
c906108c SS |
47 | |
48 | /* Prototypes for exported functions. */ | |
49 | ||
a14ed312 | 50 | void _initialize_thread (void); |
c906108c SS |
51 | |
52 | /* Prototypes for local functions. */ | |
53 | ||
c906108c SS |
54 | static struct thread_info *thread_list = NULL; |
55 | static int highest_thread_num; | |
56 | ||
a14ed312 KB |
57 | static void thread_command (char *tidstr, int from_tty); |
58 | static void thread_apply_all_command (char *, int); | |
59 | static int thread_alive (struct thread_info *); | |
60 | static void info_threads_command (char *, int); | |
61 | static void thread_apply_command (char *, int); | |
39f77062 | 62 | static void restore_current_thread (ptid_t); |
a14ed312 | 63 | static void prune_threads (void); |
c906108c | 64 | |
4f8d22e3 PA |
65 | /* Frontend view of the thread state. Possible extensions: stepping, |
66 | finishing, until(ling),... */ | |
67 | enum thread_state | |
68 | { | |
69 | THREAD_STOPPED, | |
70 | THREAD_RUNNING, | |
71 | THREAD_EXITED, | |
72 | }; | |
73 | ||
74 | static enum thread_state main_thread_state = THREAD_STOPPED; | |
8ea051c5 PA |
75 | static int main_thread_executing = 0; |
76 | ||
8601f500 MS |
77 | void |
78 | delete_step_resume_breakpoint (void *arg) | |
79 | { | |
80 | struct breakpoint **breakpointp = (struct breakpoint **) arg; | |
81 | struct thread_info *tp; | |
82 | ||
83 | if (*breakpointp != NULL) | |
84 | { | |
85 | delete_breakpoint (*breakpointp); | |
86 | for (tp = thread_list; tp; tp = tp->next) | |
87 | if (tp->step_resume_breakpoint == *breakpointp) | |
88 | tp->step_resume_breakpoint = NULL; | |
89 | ||
90 | *breakpointp = NULL; | |
91 | } | |
92 | } | |
93 | ||
7c952b6d | 94 | static void |
4f8d22e3 | 95 | clear_thread_inferior_resources (struct thread_info *tp) |
7c952b6d ND |
96 | { |
97 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
98 | but not any user-specified thread-specific breakpoints. We can not |
99 | delete the breakpoint straight-off, because the inferior might not | |
100 | be stopped at the moment. */ | |
7c952b6d | 101 | if (tp->step_resume_breakpoint) |
4f8d22e3 PA |
102 | { |
103 | tp->step_resume_breakpoint->disposition = disp_del_at_next_stop; | |
104 | tp->step_resume_breakpoint = NULL; | |
105 | } | |
7c952b6d | 106 | |
a474d7c2 | 107 | bpstat_clear (&tp->stop_bpstat); |
4f8d22e3 PA |
108 | } |
109 | ||
110 | static void | |
111 | free_thread (struct thread_info *tp) | |
112 | { | |
113 | clear_thread_inferior_resources (tp); | |
a474d7c2 | 114 | |
7c952b6d ND |
115 | /* FIXME: do I ever need to call the back-end to give it a |
116 | chance at this private data before deleting the thread? */ | |
117 | if (tp->private) | |
b8c9b27d | 118 | xfree (tp->private); |
7c952b6d | 119 | |
b8c9b27d | 120 | xfree (tp); |
7c952b6d ND |
121 | } |
122 | ||
c906108c | 123 | void |
fba45db2 | 124 | init_thread_list (void) |
c906108c SS |
125 | { |
126 | struct thread_info *tp, *tpnext; | |
127 | ||
7c952b6d | 128 | highest_thread_num = 0; |
4f8d22e3 | 129 | main_thread_state = THREAD_STOPPED; |
8ea051c5 PA |
130 | main_thread_executing = 0; |
131 | ||
c906108c SS |
132 | if (!thread_list) |
133 | return; | |
134 | ||
135 | for (tp = thread_list; tp; tp = tpnext) | |
136 | { | |
137 | tpnext = tp->next; | |
7c952b6d | 138 | free_thread (tp); |
c906108c SS |
139 | } |
140 | ||
141 | thread_list = NULL; | |
c906108c SS |
142 | } |
143 | ||
0d06e24b | 144 | struct thread_info * |
93815fbf | 145 | add_thread_silent (ptid_t ptid) |
c906108c SS |
146 | { |
147 | struct thread_info *tp; | |
148 | ||
4f8d22e3 PA |
149 | tp = find_thread_pid (ptid); |
150 | if (tp) | |
151 | /* Found an old thread with the same id. It has to be dead, | |
152 | otherwise we wouldn't be adding a new thread with the same id. | |
153 | The OS is reusing this id --- delete it, and recreate a new | |
154 | one. */ | |
155 | { | |
156 | /* In addition to deleting the thread, if this is the current | |
157 | thread, then we need to also get rid of the current infrun | |
158 | context, and take care that delete_thread doesn't really | |
159 | delete the thread if it is inferior_ptid. Create a new | |
160 | template thread in the list with an invalid ptid, context | |
161 | switch to it, delete the original thread, reset the new | |
162 | thread's ptid, and switch to it. */ | |
163 | ||
164 | if (ptid_equal (inferior_ptid, ptid)) | |
165 | { | |
166 | tp = xmalloc (sizeof (*tp)); | |
167 | memset (tp, 0, sizeof (*tp)); | |
168 | tp->ptid = minus_one_ptid; | |
169 | tp->num = ++highest_thread_num; | |
170 | tp->next = thread_list; | |
171 | thread_list = tp; | |
172 | context_switch_to (minus_one_ptid); | |
173 | ||
174 | /* Now we can delete it. */ | |
175 | delete_thread (ptid); | |
176 | ||
177 | /* Since the context is already set to this new thread, | |
178 | reset its ptid, and reswitch inferior_ptid to it. */ | |
179 | tp->ptid = ptid; | |
180 | switch_to_thread (ptid); | |
181 | ||
182 | observer_notify_new_thread (tp); | |
183 | ||
184 | /* All done. */ | |
185 | return tp; | |
186 | } | |
187 | else | |
188 | /* Just go ahead and delete it. */ | |
189 | delete_thread (ptid); | |
190 | } | |
191 | ||
6c0d3f6a MS |
192 | tp = (struct thread_info *) xmalloc (sizeof (*tp)); |
193 | memset (tp, 0, sizeof (*tp)); | |
39f77062 | 194 | tp->ptid = ptid; |
c906108c | 195 | tp->num = ++highest_thread_num; |
c906108c SS |
196 | tp->next = thread_list; |
197 | thread_list = tp; | |
cfc01461 VP |
198 | |
199 | observer_notify_new_thread (tp); | |
200 | ||
0d06e24b | 201 | return tp; |
c906108c SS |
202 | } |
203 | ||
93815fbf | 204 | struct thread_info * |
17faa917 | 205 | add_thread_with_info (ptid_t ptid, struct private_thread_info *private) |
93815fbf VP |
206 | { |
207 | struct thread_info *result = add_thread_silent (ptid); | |
208 | ||
17faa917 DJ |
209 | result->private = private; |
210 | ||
93815fbf | 211 | if (print_thread_events) |
fd532e2e | 212 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
d4fc5b1e NR |
213 | |
214 | annotate_new_thread (); | |
93815fbf VP |
215 | return result; |
216 | } | |
217 | ||
17faa917 DJ |
218 | struct thread_info * |
219 | add_thread (ptid_t ptid) | |
220 | { | |
221 | return add_thread_with_info (ptid, NULL); | |
222 | } | |
223 | ||
5e0b29c1 PA |
224 | /* Delete thread PTID. If SILENT, don't notify the observer of this |
225 | exit. */ | |
226 | static void | |
227 | delete_thread_1 (ptid_t ptid, int silent) | |
c906108c SS |
228 | { |
229 | struct thread_info *tp, *tpprev; | |
230 | ||
231 | tpprev = NULL; | |
232 | ||
233 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 234 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
235 | break; |
236 | ||
237 | if (!tp) | |
238 | return; | |
239 | ||
4f8d22e3 PA |
240 | /* If this is the current thread, or there's code out there that |
241 | relies on it existing (refcount > 0) we can't delete yet. Mark | |
242 | it as exited, and notify it. */ | |
243 | if (tp->refcount > 0 | |
244 | || ptid_equal (tp->ptid, inferior_ptid)) | |
245 | { | |
246 | if (tp->state_ != THREAD_EXITED) | |
247 | { | |
248 | if (!silent) | |
249 | observer_notify_thread_exit (tp); | |
250 | ||
251 | /* Tag it as exited. */ | |
252 | tp->state_ = THREAD_EXITED; | |
253 | ||
254 | /* Clear breakpoints, etc. associated with this thread. */ | |
255 | clear_thread_inferior_resources (tp); | |
256 | } | |
257 | ||
258 | /* Will be really deleted some other time. */ | |
259 | return; | |
260 | } | |
261 | ||
c906108c SS |
262 | if (tpprev) |
263 | tpprev->next = tp->next; | |
264 | else | |
265 | thread_list = tp->next; | |
266 | ||
4f8d22e3 PA |
267 | /* Notify thread exit, but only if we haven't already. */ |
268 | if (!silent && tp->state_ != THREAD_EXITED) | |
5e0b29c1 | 269 | observer_notify_thread_exit (tp); |
063bfe2e | 270 | |
7c952b6d | 271 | free_thread (tp); |
c906108c SS |
272 | } |
273 | ||
4f8d22e3 PA |
274 | /* Delete thread PTID and notify of thread exit. If this is |
275 | inferior_ptid, don't actually delete it, but tag it as exited and | |
276 | do the notification. If PTID is the user selected thread, clear | |
277 | it. */ | |
5e0b29c1 PA |
278 | void |
279 | delete_thread (ptid_t ptid) | |
280 | { | |
281 | delete_thread_1 (ptid, 0 /* not silent */); | |
282 | } | |
283 | ||
284 | void | |
285 | delete_thread_silent (ptid_t ptid) | |
286 | { | |
287 | delete_thread_1 (ptid, 1 /* silent */); | |
288 | } | |
289 | ||
1e92afda | 290 | struct thread_info * |
fba45db2 | 291 | find_thread_id (int num) |
c906108c SS |
292 | { |
293 | struct thread_info *tp; | |
294 | ||
295 | for (tp = thread_list; tp; tp = tp->next) | |
296 | if (tp->num == num) | |
297 | return tp; | |
298 | ||
299 | return NULL; | |
300 | } | |
301 | ||
39f77062 | 302 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 303 | struct thread_info * |
39f77062 | 304 | find_thread_pid (ptid_t ptid) |
0d06e24b JM |
305 | { |
306 | struct thread_info *tp; | |
307 | ||
308 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 309 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
310 | return tp; |
311 | ||
312 | return NULL; | |
313 | } | |
314 | ||
315 | /* | |
316 | * Thread iterator function. | |
317 | * | |
318 | * Calls a callback function once for each thread, so long as | |
319 | * the callback function returns false. If the callback function | |
320 | * returns true, the iteration will end and the current thread | |
321 | * will be returned. This can be useful for implementing a | |
322 | * search for a thread with arbitrary attributes, or for applying | |
323 | * some operation to every thread. | |
324 | * | |
325 | * FIXME: some of the existing functionality, such as | |
326 | * "Thread apply all", might be rewritten using this functionality. | |
327 | */ | |
328 | ||
329 | struct thread_info * | |
fd118b61 KB |
330 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
331 | void *data) | |
0d06e24b | 332 | { |
4f8d22e3 | 333 | struct thread_info *tp, *next; |
0d06e24b | 334 | |
4f8d22e3 PA |
335 | for (tp = thread_list; tp; tp = next) |
336 | { | |
337 | next = tp->next; | |
338 | if ((*callback) (tp, data)) | |
339 | return tp; | |
340 | } | |
0d06e24b JM |
341 | |
342 | return NULL; | |
343 | } | |
344 | ||
20874c92 VP |
345 | int |
346 | thread_count (void) | |
347 | { | |
348 | int result = 0; | |
349 | struct thread_info *tp; | |
350 | ||
351 | for (tp = thread_list; tp; tp = tp->next) | |
352 | ++result; | |
353 | ||
354 | return result; | |
355 | } | |
356 | ||
c906108c | 357 | int |
fba45db2 | 358 | valid_thread_id (int num) |
c906108c SS |
359 | { |
360 | struct thread_info *tp; | |
361 | ||
362 | for (tp = thread_list; tp; tp = tp->next) | |
363 | if (tp->num == num) | |
364 | return 1; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | int | |
39f77062 | 370 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
371 | { |
372 | struct thread_info *tp; | |
373 | ||
374 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 375 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
376 | return tp->num; |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
39f77062 | 381 | ptid_t |
fba45db2 | 382 | thread_id_to_pid (int num) |
c906108c SS |
383 | { |
384 | struct thread_info *thread = find_thread_id (num); | |
385 | if (thread) | |
39f77062 | 386 | return thread->ptid; |
c906108c | 387 | else |
39f77062 | 388 | return pid_to_ptid (-1); |
c906108c SS |
389 | } |
390 | ||
391 | int | |
39f77062 | 392 | in_thread_list (ptid_t ptid) |
c906108c SS |
393 | { |
394 | struct thread_info *tp; | |
395 | ||
396 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 397 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
398 | return 1; |
399 | ||
400 | return 0; /* Never heard of 'im */ | |
401 | } | |
8926118c | 402 | |
8b93c638 JM |
403 | /* Print a list of thread ids currently known, and the total number of |
404 | threads. To be used from within catch_errors. */ | |
6949171e JJ |
405 | static int |
406 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
407 | { |
408 | struct thread_info *tp; | |
409 | int num = 0; | |
3b31d625 | 410 | struct cleanup *cleanup_chain; |
8b93c638 | 411 | |
7990a578 EZ |
412 | prune_threads (); |
413 | target_find_new_threads (); | |
414 | ||
3b31d625 | 415 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
416 | |
417 | for (tp = thread_list; tp; tp = tp->next) | |
418 | { | |
4f8d22e3 PA |
419 | if (tp->state_ == THREAD_EXITED) |
420 | continue; | |
8b93c638 JM |
421 | num++; |
422 | ui_out_field_int (uiout, "thread-id", tp->num); | |
423 | } | |
424 | ||
3b31d625 | 425 | do_cleanups (cleanup_chain); |
8b93c638 JM |
426 | ui_out_field_int (uiout, "number-of-threads", num); |
427 | return GDB_RC_OK; | |
428 | } | |
429 | ||
430 | /* Official gdblib interface function to get a list of thread ids and | |
431 | the total number. */ | |
432 | enum gdb_rc | |
ce43223b | 433 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 434 | { |
b0b13bb4 DJ |
435 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
436 | error_message, RETURN_MASK_ALL) < 0) | |
437 | return GDB_RC_FAIL; | |
438 | return GDB_RC_OK; | |
8b93c638 | 439 | } |
c906108c SS |
440 | |
441 | /* Load infrun state for the thread PID. */ | |
442 | ||
c5aa993b | 443 | void |
6949171e JJ |
444 | load_infrun_state (ptid_t ptid, |
445 | CORE_ADDR *prev_pc, | |
6c0d3f6a | 446 | int *trap_expected, |
fba45db2 | 447 | struct breakpoint **step_resume_breakpoint, |
6949171e | 448 | CORE_ADDR *step_range_start, |
6c0d3f6a | 449 | CORE_ADDR *step_range_end, |
6949171e | 450 | struct frame_id *step_frame_id, |
ca67fcb8 | 451 | int *stepping_over_breakpoint, |
6c0d3f6a | 452 | int *stepping_through_solib_after_catch, |
fba45db2 | 453 | bpstat *stepping_through_solib_catchpoints, |
6949171e | 454 | int *current_line, |
a474d7c2 PA |
455 | struct symtab **current_symtab, |
456 | struct continuation **continuations, | |
457 | struct continuation **intermediate_continuations, | |
458 | int *proceed_to_finish, | |
459 | enum step_over_calls_kind *step_over_calls, | |
460 | int *stop_step, | |
461 | int *step_multi, | |
462 | enum target_signal *stop_signal, | |
463 | bpstat *stop_bpstat) | |
c906108c SS |
464 | { |
465 | struct thread_info *tp; | |
466 | ||
467 | /* If we can't find the thread, then we're debugging a single threaded | |
468 | process. No need to do anything in that case. */ | |
39f77062 | 469 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
470 | if (tp == NULL) |
471 | return; | |
472 | ||
473 | *prev_pc = tp->prev_pc; | |
6c0d3f6a | 474 | *trap_expected = tp->trap_expected; |
c906108c SS |
475 | *step_resume_breakpoint = tp->step_resume_breakpoint; |
476 | *step_range_start = tp->step_range_start; | |
477 | *step_range_end = tp->step_range_end; | |
aa0cd9c1 | 478 | *step_frame_id = tp->step_frame_id; |
ca67fcb8 | 479 | *stepping_over_breakpoint = tp->stepping_over_breakpoint; |
6949171e JJ |
480 | *stepping_through_solib_after_catch = |
481 | tp->stepping_through_solib_after_catch; | |
482 | *stepping_through_solib_catchpoints = | |
483 | tp->stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
484 | *current_line = tp->current_line; |
485 | *current_symtab = tp->current_symtab; | |
a474d7c2 PA |
486 | |
487 | /* In all-stop mode, these are global state, while in non-stop mode, | |
488 | they are per thread. */ | |
489 | if (non_stop) | |
490 | { | |
491 | *continuations = tp->continuations; | |
492 | tp->continuations = NULL; | |
493 | *intermediate_continuations = tp->intermediate_continuations; | |
494 | tp->intermediate_continuations = NULL; | |
495 | *proceed_to_finish = tp->proceed_to_finish; | |
496 | *step_over_calls = tp->step_over_calls; | |
497 | *stop_step = tp->stop_step; | |
498 | *step_multi = tp->step_multi; | |
499 | *stop_signal = tp->stop_signal; | |
500 | ||
501 | /* Swap instead of copy, so we only have to update one of | |
502 | them. */ | |
503 | *stop_bpstat = tp->stop_bpstat; | |
504 | tp->stop_bpstat = 0; | |
505 | } | |
c906108c SS |
506 | } |
507 | ||
508 | /* Save infrun state for the thread PID. */ | |
509 | ||
c5aa993b | 510 | void |
6949171e JJ |
511 | save_infrun_state (ptid_t ptid, |
512 | CORE_ADDR prev_pc, | |
6c0d3f6a | 513 | int trap_expected, |
fba45db2 | 514 | struct breakpoint *step_resume_breakpoint, |
6949171e | 515 | CORE_ADDR step_range_start, |
6c0d3f6a | 516 | CORE_ADDR step_range_end, |
6949171e | 517 | const struct frame_id *step_frame_id, |
ca67fcb8 | 518 | int stepping_over_breakpoint, |
6c0d3f6a | 519 | int stepping_through_solib_after_catch, |
fba45db2 | 520 | bpstat stepping_through_solib_catchpoints, |
6c0d3f6a | 521 | int current_line, |
a474d7c2 PA |
522 | struct symtab *current_symtab, |
523 | struct continuation *continuations, | |
524 | struct continuation *intermediate_continuations, | |
525 | int proceed_to_finish, | |
526 | enum step_over_calls_kind step_over_calls, | |
527 | int stop_step, | |
528 | int step_multi, | |
529 | enum target_signal stop_signal, | |
530 | bpstat stop_bpstat) | |
c906108c SS |
531 | { |
532 | struct thread_info *tp; | |
533 | ||
534 | /* If we can't find the thread, then we're debugging a single-threaded | |
535 | process. Nothing to do in that case. */ | |
39f77062 | 536 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
537 | if (tp == NULL) |
538 | return; | |
539 | ||
540 | tp->prev_pc = prev_pc; | |
6c0d3f6a | 541 | tp->trap_expected = trap_expected; |
c906108c SS |
542 | tp->step_resume_breakpoint = step_resume_breakpoint; |
543 | tp->step_range_start = step_range_start; | |
544 | tp->step_range_end = step_range_end; | |
aa0cd9c1 | 545 | tp->step_frame_id = (*step_frame_id); |
ca67fcb8 | 546 | tp->stepping_over_breakpoint = stepping_over_breakpoint; |
c906108c SS |
547 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; |
548 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
549 | tp->current_line = current_line; |
550 | tp->current_symtab = current_symtab; | |
a474d7c2 PA |
551 | |
552 | /* In all-stop mode, these are global state, while in non-stop mode, | |
553 | they are per thread. */ | |
554 | if (non_stop) | |
555 | { | |
556 | tp->continuations = continuations; | |
557 | tp->intermediate_continuations = intermediate_continuations; | |
558 | tp->proceed_to_finish = proceed_to_finish; | |
559 | tp->step_over_calls = step_over_calls; | |
560 | tp->stop_step = stop_step; | |
561 | tp->step_multi = step_multi; | |
562 | tp->stop_signal = stop_signal; | |
563 | tp->stop_bpstat = stop_bpstat; | |
564 | } | |
c906108c SS |
565 | } |
566 | ||
567 | /* Return true if TP is an active thread. */ | |
568 | static int | |
fba45db2 | 569 | thread_alive (struct thread_info *tp) |
c906108c | 570 | { |
4f8d22e3 | 571 | if (tp->state_ == THREAD_EXITED) |
c906108c | 572 | return 0; |
39f77062 | 573 | if (!target_thread_alive (tp->ptid)) |
4f8d22e3 | 574 | return 0; |
c906108c SS |
575 | return 1; |
576 | } | |
577 | ||
578 | static void | |
fba45db2 | 579 | prune_threads (void) |
c906108c | 580 | { |
d4f3574e | 581 | struct thread_info *tp, *next; |
c906108c | 582 | |
c906108c SS |
583 | for (tp = thread_list; tp; tp = next) |
584 | { | |
585 | next = tp->next; | |
586 | if (!thread_alive (tp)) | |
39f77062 | 587 | delete_thread (tp->ptid); |
c906108c SS |
588 | } |
589 | } | |
590 | ||
5231c1fd PA |
591 | void |
592 | thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid) | |
593 | { | |
594 | struct thread_info * tp = find_thread_pid (old_ptid); | |
595 | tp->ptid = new_ptid; | |
596 | ||
597 | observer_notify_thread_ptid_changed (old_ptid, new_ptid); | |
598 | } | |
599 | ||
e1ac3328 VP |
600 | void |
601 | set_running (ptid_t ptid, int running) | |
602 | { | |
603 | struct thread_info *tp; | |
604 | ||
605 | if (!thread_list) | |
606 | { | |
607 | /* This is one of the targets that does not add main | |
608 | thread to the thread list. Just use a single | |
609 | global flag to indicate that a thread is running. | |
610 | ||
611 | This problem is unique to ST programs. For MT programs, | |
612 | the main thread is always present in the thread list. If it's | |
613 | not, the first call to context_switch will mess up GDB internal | |
614 | state. */ | |
4f8d22e3 PA |
615 | if (running |
616 | && main_thread_state != THREAD_RUNNING | |
617 | && !suppress_resume_observer) | |
e1ac3328 | 618 | observer_notify_target_resumed (ptid); |
4f8d22e3 | 619 | main_thread_state = running ? THREAD_RUNNING : THREAD_STOPPED; |
e1ac3328 VP |
620 | return; |
621 | } | |
622 | ||
623 | /* We try not to notify the observer if no thread has actually changed | |
624 | the running state -- merely to reduce the number of messages to | |
625 | frontend. Frontend is supposed to handle multiple *running just fine. */ | |
626 | if (PIDGET (ptid) == -1) | |
627 | { | |
628 | int any_started = 0; | |
629 | for (tp = thread_list; tp; tp = tp->next) | |
630 | { | |
4f8d22e3 PA |
631 | if (tp->state_ == THREAD_EXITED) |
632 | continue; | |
633 | if (running && tp->state_ == THREAD_STOPPED) | |
634 | any_started = 1; | |
635 | tp->state_ = running ? THREAD_RUNNING : THREAD_STOPPED; | |
e1ac3328 | 636 | } |
8f6a8e84 | 637 | if (any_started && !suppress_resume_observer) |
e1ac3328 VP |
638 | observer_notify_target_resumed (ptid); |
639 | } | |
640 | else | |
641 | { | |
4f8d22e3 | 642 | int started = 0; |
e1ac3328 VP |
643 | tp = find_thread_pid (ptid); |
644 | gdb_assert (tp); | |
4f8d22e3 PA |
645 | gdb_assert (tp->state_ != THREAD_EXITED); |
646 | if (running && tp->state_ == THREAD_STOPPED) | |
647 | started = 1; | |
648 | tp->state_ = running ? THREAD_RUNNING : THREAD_STOPPED; | |
649 | if (started && !suppress_resume_observer) | |
650 | observer_notify_target_resumed (ptid); | |
651 | } | |
e1ac3328 VP |
652 | } |
653 | ||
4f8d22e3 PA |
654 | static int |
655 | is_thread_state (ptid_t ptid, enum thread_state state) | |
e1ac3328 VP |
656 | { |
657 | struct thread_info *tp; | |
658 | ||
8ea051c5 PA |
659 | if (!target_has_execution) |
660 | return 0; | |
661 | ||
e1ac3328 | 662 | if (!thread_list) |
4f8d22e3 | 663 | return main_thread_state == state; |
e1ac3328 VP |
664 | |
665 | tp = find_thread_pid (ptid); | |
666 | gdb_assert (tp); | |
4f8d22e3 PA |
667 | return tp->state_ == state; |
668 | } | |
669 | ||
670 | int | |
671 | is_stopped (ptid_t ptid) | |
672 | { | |
673 | /* Without execution, this property is always true. */ | |
674 | if (!target_has_execution) | |
675 | return 1; | |
676 | ||
677 | return is_thread_state (ptid, THREAD_STOPPED); | |
678 | } | |
679 | ||
680 | int | |
681 | is_exited (ptid_t ptid) | |
682 | { | |
683 | /* Without execution, this property is always false. */ | |
684 | if (!target_has_execution) | |
685 | return 0; | |
686 | ||
687 | return is_thread_state (ptid, THREAD_EXITED); | |
688 | } | |
689 | ||
690 | int | |
691 | is_running (ptid_t ptid) | |
692 | { | |
693 | /* Without execution, this property is always false. */ | |
694 | if (!target_has_execution) | |
695 | return 0; | |
696 | ||
697 | return is_thread_state (ptid, THREAD_RUNNING); | |
e1ac3328 VP |
698 | } |
699 | ||
8ea051c5 PA |
700 | int |
701 | any_running (void) | |
702 | { | |
703 | struct thread_info *tp; | |
704 | ||
705 | if (!target_has_execution) | |
706 | return 0; | |
707 | ||
708 | if (!thread_list) | |
4f8d22e3 | 709 | return main_thread_state == THREAD_RUNNING; |
8ea051c5 PA |
710 | |
711 | for (tp = thread_list; tp; tp = tp->next) | |
4f8d22e3 | 712 | if (tp->state_ == THREAD_RUNNING) |
8ea051c5 PA |
713 | return 1; |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
718 | int | |
719 | is_executing (ptid_t ptid) | |
720 | { | |
721 | struct thread_info *tp; | |
722 | ||
723 | if (!target_has_execution) | |
724 | return 0; | |
725 | ||
726 | if (!thread_list) | |
727 | return main_thread_executing; | |
728 | ||
729 | tp = find_thread_pid (ptid); | |
730 | gdb_assert (tp); | |
731 | return tp->executing_; | |
732 | } | |
733 | ||
734 | void | |
735 | set_executing (ptid_t ptid, int executing) | |
736 | { | |
737 | struct thread_info *tp; | |
738 | ||
739 | if (!thread_list) | |
740 | { | |
741 | /* This target does not add the main thread to the thread list. | |
742 | Use a global flag to indicate that the thread is | |
743 | executing. */ | |
744 | main_thread_executing = executing; | |
745 | return; | |
746 | } | |
747 | ||
748 | if (PIDGET (ptid) == -1) | |
749 | { | |
750 | for (tp = thread_list; tp; tp = tp->next) | |
751 | tp->executing_ = executing; | |
752 | } | |
753 | else | |
754 | { | |
755 | tp = find_thread_pid (ptid); | |
756 | gdb_assert (tp); | |
757 | tp->executing_ = executing; | |
758 | } | |
759 | } | |
760 | ||
8e8901c5 VP |
761 | /* Prints the list of threads and their details on UIOUT. |
762 | This is a version of 'info_thread_command' suitable for | |
763 | use from MI. | |
4f8d22e3 | 764 | If REQUESTED_THREAD is not -1, it's the GDB id of the thread |
8e8901c5 VP |
765 | that should be printed. Otherwise, all threads are |
766 | printed. */ | |
767 | void | |
768 | print_thread_info (struct ui_out *uiout, int requested_thread) | |
c906108c SS |
769 | { |
770 | struct thread_info *tp; | |
39f77062 | 771 | ptid_t current_ptid; |
99b3d574 | 772 | struct cleanup *old_chain; |
0d06e24b | 773 | char *extra_info; |
8e8901c5 | 774 | int current_thread = -1; |
c906108c | 775 | |
c906108c | 776 | prune_threads (); |
b83266a0 | 777 | target_find_new_threads (); |
39f77062 | 778 | current_ptid = inferior_ptid; |
4f8d22e3 PA |
779 | |
780 | /* We'll be switching threads temporarily. */ | |
781 | old_chain = make_cleanup_restore_current_thread (); | |
782 | ||
783 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); | |
c906108c SS |
784 | for (tp = thread_list; tp; tp = tp->next) |
785 | { | |
8e8901c5 VP |
786 | struct cleanup *chain2; |
787 | ||
788 | if (requested_thread != -1 && tp->num != requested_thread) | |
789 | continue; | |
790 | ||
4f8d22e3 PA |
791 | if (ptid_equal (tp->ptid, current_ptid)) |
792 | current_thread = tp->num; | |
793 | ||
794 | if (tp->state_ == THREAD_EXITED) | |
795 | continue; | |
796 | ||
8e8901c5 VP |
797 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
798 | ||
39f77062 | 799 | if (ptid_equal (tp->ptid, current_ptid)) |
4f8d22e3 | 800 | ui_out_text (uiout, "* "); |
c906108c | 801 | else |
8e8901c5 | 802 | ui_out_text (uiout, " "); |
c906108c | 803 | |
8e8901c5 VP |
804 | ui_out_field_int (uiout, "id", tp->num); |
805 | ui_out_text (uiout, " "); | |
806 | ui_out_field_string (uiout, "target-id", target_tid_to_str (tp->ptid)); | |
0d06e24b | 807 | |
4f8d22e3 | 808 | if (tp->state_ != THREAD_EXITED) |
8e8901c5 | 809 | { |
4f8d22e3 PA |
810 | extra_info = target_extra_thread_info (tp); |
811 | if (extra_info) | |
812 | { | |
813 | ui_out_text (uiout, " ("); | |
814 | ui_out_field_string (uiout, "details", extra_info); | |
815 | ui_out_text (uiout, ")"); | |
816 | } | |
817 | ui_out_text (uiout, " "); | |
8e8901c5 | 818 | } |
4f8d22e3 PA |
819 | |
820 | if (tp->state_ == THREAD_RUNNING) | |
94cc34af PA |
821 | ui_out_text (uiout, "(running)\n"); |
822 | else | |
823 | { | |
824 | /* The switch below puts us at the top of the stack (leaf | |
825 | frame). */ | |
826 | switch_to_thread (tp->ptid); | |
827 | print_stack_frame (get_selected_frame (NULL), | |
828 | /* For MI output, print frame level. */ | |
829 | ui_out_is_mi_like_p (uiout), | |
830 | LOCATION); | |
831 | } | |
8e8901c5 | 832 | |
90139f7d VP |
833 | if (ui_out_is_mi_like_p (uiout)) |
834 | { | |
835 | char *state = "stopped"; | |
836 | if (tp->state_ == THREAD_EXITED) | |
837 | state = "exited"; | |
838 | else if (tp->state_ == THREAD_RUNNING) | |
839 | state = "running"; | |
840 | ui_out_field_string (uiout, "state", state); | |
841 | } | |
842 | ||
8e8901c5 | 843 | do_cleanups (chain2); |
c906108c SS |
844 | } |
845 | ||
99b3d574 DP |
846 | /* Restores the current thread and the frame selected before |
847 | the "info threads" command. */ | |
848 | do_cleanups (old_chain); | |
c906108c | 849 | |
8e8901c5 VP |
850 | if (requested_thread == -1) |
851 | { | |
4f8d22e3 PA |
852 | gdb_assert (current_thread != -1 |
853 | || !thread_list); | |
0bcd3e20 | 854 | if (current_thread != -1 && ui_out_is_mi_like_p (uiout)) |
8e8901c5 | 855 | ui_out_field_int (uiout, "current-thread-id", current_thread); |
94cc34af | 856 | |
4f8d22e3 PA |
857 | if (current_thread != -1 && is_exited (current_ptid)) |
858 | ui_out_message (uiout, 0, "\n\ | |
859 | The current thread <Thread ID %d> has terminated. See `help thread'.\n", | |
860 | current_thread); | |
c906108c | 861 | } |
c906108c SS |
862 | } |
863 | ||
8e8901c5 VP |
864 | |
865 | /* Print information about currently known threads | |
866 | ||
867 | * Note: this has the drawback that it _really_ switches | |
868 | * threads, which frees the frame cache. A no-side | |
869 | * effects info-threads command would be nicer. | |
870 | */ | |
871 | ||
872 | static void | |
873 | info_threads_command (char *arg, int from_tty) | |
874 | { | |
875 | print_thread_info (uiout, -1); | |
876 | } | |
877 | ||
c906108c SS |
878 | /* Switch from one thread to another. */ |
879 | ||
6a6b96b9 | 880 | void |
39f77062 | 881 | switch_to_thread (ptid_t ptid) |
c906108c | 882 | { |
39f77062 | 883 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
884 | return; |
885 | ||
39f77062 | 886 | inferior_ptid = ptid; |
35f196d9 | 887 | reinit_frame_cache (); |
c906108c | 888 | registers_changed (); |
94cc34af | 889 | |
4f8d22e3 PA |
890 | /* We don't check for is_stopped, because we're called at times |
891 | while in the TARGET_RUNNING state, e.g., while handling an | |
892 | internal event. */ | |
893 | if (!is_exited (ptid) && !is_executing (ptid)) | |
94cc34af PA |
894 | stop_pc = read_pc (); |
895 | else | |
896 | stop_pc = ~(CORE_ADDR) 0; | |
c906108c SS |
897 | } |
898 | ||
899 | static void | |
39f77062 | 900 | restore_current_thread (ptid_t ptid) |
c906108c | 901 | { |
6949171e | 902 | if (!ptid_equal (ptid, inferior_ptid)) |
c906108c | 903 | { |
4f8d22e3 PA |
904 | if (non_stop) |
905 | context_switch_to (ptid); | |
906 | else | |
907 | switch_to_thread (ptid); | |
99b3d574 DP |
908 | } |
909 | } | |
910 | ||
911 | static void | |
4f8d22e3 | 912 | restore_selected_frame (struct frame_id a_frame_id, int frame_level) |
99b3d574 | 913 | { |
4f8d22e3 PA |
914 | struct frame_info *frame = NULL; |
915 | int count; | |
916 | ||
917 | gdb_assert (frame_level >= 0); | |
918 | ||
919 | /* Restore by level first, check if the frame id is the same as | |
920 | expected. If that fails, try restoring by frame id. If that | |
921 | fails, nothing to do, just warn the user. */ | |
922 | ||
923 | count = frame_level; | |
924 | frame = find_relative_frame (get_current_frame (), &count); | |
925 | if (count == 0 | |
926 | && frame != NULL | |
927 | /* Either the frame ids match, of they're both invalid. The | |
928 | latter case is not failsafe, but since it's highly unlikely | |
929 | the search by level finds the wrong frame, it's 99.9(9)% of | |
930 | the time (for all practical purposes) safe. */ | |
931 | && (frame_id_eq (get_frame_id (frame), a_frame_id) | |
932 | /* Note: could be better to check every frame_id | |
933 | member for equality here. */ | |
934 | || (!frame_id_p (get_frame_id (frame)) | |
935 | && !frame_id_p (a_frame_id)))) | |
936 | { | |
937 | /* Cool, all is fine. */ | |
938 | select_frame (frame); | |
939 | return; | |
940 | } | |
99b3d574 | 941 | |
4f8d22e3 PA |
942 | frame = frame_find_by_id (a_frame_id); |
943 | if (frame != NULL) | |
944 | { | |
945 | /* Cool, refound it. */ | |
946 | select_frame (frame); | |
947 | return; | |
948 | } | |
99b3d574 | 949 | |
0c501536 PA |
950 | /* Nothing else to do, the frame layout really changed. Select the |
951 | innermost stack frame. */ | |
952 | select_frame (get_current_frame ()); | |
953 | ||
954 | /* Warn the user. */ | |
4f8d22e3 | 955 | if (!ui_out_is_mi_like_p (uiout)) |
99b3d574 | 956 | { |
4f8d22e3 PA |
957 | warning (_("\ |
958 | Couldn't restore frame #%d in current thread, at reparsed frame #0\n"), | |
959 | frame_level); | |
960 | /* For MI, we should probably have a notification about | |
961 | current frame change. But this error is not very | |
962 | likely, so don't bother for now. */ | |
0c501536 | 963 | print_stack_frame (get_selected_frame (NULL), 1, SRC_LINE); |
c906108c SS |
964 | } |
965 | } | |
966 | ||
6ecce94d AC |
967 | struct current_thread_cleanup |
968 | { | |
39f77062 | 969 | ptid_t inferior_ptid; |
99b3d574 | 970 | struct frame_id selected_frame_id; |
4f8d22e3 PA |
971 | int selected_frame_level; |
972 | int was_stopped; | |
6ecce94d AC |
973 | }; |
974 | ||
975 | static void | |
976 | do_restore_current_thread_cleanup (void *arg) | |
977 | { | |
4f8d22e3 | 978 | struct thread_info *tp; |
6ecce94d | 979 | struct current_thread_cleanup *old = arg; |
39f77062 | 980 | restore_current_thread (old->inferior_ptid); |
94cc34af | 981 | |
4f8d22e3 PA |
982 | /* The running state of the originally selected thread may have |
983 | changed, so we have to recheck it here. */ | |
984 | if (old->was_stopped | |
985 | && is_stopped (inferior_ptid) | |
986 | && target_has_registers | |
987 | && target_has_stack | |
988 | && target_has_memory) | |
989 | restore_selected_frame (old->selected_frame_id, | |
990 | old->selected_frame_level); | |
991 | } | |
992 | ||
993 | static void | |
994 | restore_current_thread_cleanup_dtor (void *arg) | |
995 | { | |
996 | struct current_thread_cleanup *old = arg; | |
997 | struct thread_info *tp; | |
998 | tp = find_thread_pid (old->inferior_ptid); | |
999 | if (tp) | |
1000 | tp->refcount--; | |
b8c9b27d | 1001 | xfree (old); |
6ecce94d AC |
1002 | } |
1003 | ||
6208b47d | 1004 | struct cleanup * |
4f8d22e3 | 1005 | make_cleanup_restore_current_thread (void) |
6ecce94d | 1006 | { |
4f8d22e3 PA |
1007 | struct thread_info *tp; |
1008 | struct frame_info *frame; | |
1009 | struct current_thread_cleanup *old; | |
1010 | ||
1011 | old = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 1012 | old->inferior_ptid = inferior_ptid; |
4f8d22e3 PA |
1013 | old->was_stopped = is_stopped (inferior_ptid); |
1014 | if (old->was_stopped | |
1015 | && target_has_registers | |
1016 | && target_has_stack | |
1017 | && target_has_memory) | |
1018 | frame = get_selected_frame (NULL); | |
1019 | else | |
1020 | frame = NULL; | |
1021 | ||
1022 | old->selected_frame_id = get_frame_id (frame); | |
1023 | old->selected_frame_level = frame_relative_level (frame); | |
1024 | ||
1025 | tp = find_thread_pid (inferior_ptid); | |
1026 | if (tp) | |
1027 | tp->refcount++; | |
1028 | ||
1029 | return make_cleanup_dtor (do_restore_current_thread_cleanup, old, | |
1030 | restore_current_thread_cleanup_dtor); | |
6ecce94d AC |
1031 | } |
1032 | ||
c906108c SS |
1033 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
1034 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
1035 | of two numbers seperated by a hyphen. Examples: | |
1036 | ||
c5aa993b JM |
1037 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
1038 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
1039 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
1040 | */ | |
c906108c SS |
1041 | |
1042 | static void | |
fba45db2 | 1043 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c SS |
1044 | { |
1045 | struct thread_info *tp; | |
4f8d22e3 | 1046 | struct cleanup *old_chain; |
e35ce267 | 1047 | char *saved_cmd; |
c906108c SS |
1048 | |
1049 | if (cmd == NULL || *cmd == '\000') | |
8a3fe4f8 | 1050 | error (_("Please specify a command following the thread ID list")); |
94cc34af | 1051 | |
4f8d22e3 | 1052 | prune_threads (); |
e9d196c5 MS |
1053 | target_find_new_threads (); |
1054 | ||
4f8d22e3 PA |
1055 | old_chain = make_cleanup_restore_current_thread (); |
1056 | ||
e35ce267 CF |
1057 | /* Save a copy of the command in case it is clobbered by |
1058 | execute_command */ | |
5b616ba1 | 1059 | saved_cmd = xstrdup (cmd); |
94cc34af | 1060 | make_cleanup (xfree, saved_cmd); |
c906108c SS |
1061 | for (tp = thread_list; tp; tp = tp->next) |
1062 | if (thread_alive (tp)) | |
1063 | { | |
94cc34af PA |
1064 | if (non_stop) |
1065 | context_switch_to (tp->ptid); | |
1066 | else | |
1067 | switch_to_thread (tp->ptid); | |
1068 | ||
a3f17187 | 1069 | printf_filtered (_("\nThread %d (%s):\n"), |
6949171e | 1070 | tp->num, target_tid_to_str (inferior_ptid)); |
c906108c | 1071 | execute_command (cmd, from_tty); |
6949171e | 1072 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c | 1073 | } |
6ecce94d AC |
1074 | |
1075 | do_cleanups (old_chain); | |
c906108c SS |
1076 | } |
1077 | ||
1078 | static void | |
fba45db2 | 1079 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
1080 | { |
1081 | char *cmd; | |
1082 | char *p; | |
1083 | struct cleanup *old_chain; | |
e35ce267 | 1084 | char *saved_cmd; |
c906108c SS |
1085 | |
1086 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 1087 | error (_("Please specify a thread ID list")); |
c906108c | 1088 | |
c5aa993b | 1089 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
1090 | |
1091 | if (*cmd == '\000') | |
8a3fe4f8 | 1092 | error (_("Please specify a command following the thread ID list")); |
c906108c | 1093 | |
e35ce267 CF |
1094 | /* Save a copy of the command in case it is clobbered by |
1095 | execute_command */ | |
5b616ba1 | 1096 | saved_cmd = xstrdup (cmd); |
4f8d22e3 | 1097 | old_chain = make_cleanup (xfree, saved_cmd); |
c906108c SS |
1098 | while (tidlist < cmd) |
1099 | { | |
1100 | struct thread_info *tp; | |
1101 | int start, end; | |
1102 | ||
1103 | start = strtol (tidlist, &p, 10); | |
1104 | if (p == tidlist) | |
8a3fe4f8 | 1105 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
1106 | tidlist = p; |
1107 | ||
1108 | while (*tidlist == ' ' || *tidlist == '\t') | |
1109 | tidlist++; | |
1110 | ||
1111 | if (*tidlist == '-') /* Got a range of IDs? */ | |
1112 | { | |
c5aa993b | 1113 | tidlist++; /* Skip the - */ |
c906108c SS |
1114 | end = strtol (tidlist, &p, 10); |
1115 | if (p == tidlist) | |
8a3fe4f8 | 1116 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
1117 | tidlist = p; |
1118 | ||
1119 | while (*tidlist == ' ' || *tidlist == '\t') | |
1120 | tidlist++; | |
1121 | } | |
1122 | else | |
1123 | end = start; | |
1124 | ||
65fc9b77 PA |
1125 | make_cleanup_restore_current_thread (); |
1126 | ||
c906108c SS |
1127 | for (; start <= end; start++) |
1128 | { | |
1129 | tp = find_thread_id (start); | |
1130 | ||
1131 | if (!tp) | |
8a3fe4f8 | 1132 | warning (_("Unknown thread %d."), start); |
c906108c | 1133 | else if (!thread_alive (tp)) |
8a3fe4f8 | 1134 | warning (_("Thread %d has terminated."), start); |
c906108c SS |
1135 | else |
1136 | { | |
94cc34af PA |
1137 | if (non_stop) |
1138 | context_switch_to (tp->ptid); | |
1139 | else | |
1140 | switch_to_thread (tp->ptid); | |
4f8d22e3 | 1141 | |
a3f17187 | 1142 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
39f77062 | 1143 | target_tid_to_str (inferior_ptid)); |
c906108c | 1144 | execute_command (cmd, from_tty); |
4f8d22e3 PA |
1145 | |
1146 | /* Restore exact command used previously. */ | |
1147 | strcpy (cmd, saved_cmd); | |
c906108c SS |
1148 | } |
1149 | } | |
1150 | } | |
6ecce94d AC |
1151 | |
1152 | do_cleanups (old_chain); | |
c906108c SS |
1153 | } |
1154 | ||
1155 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
1156 | if prefix of arg is `apply'. */ | |
1157 | ||
1158 | static void | |
fba45db2 | 1159 | thread_command (char *tidstr, int from_tty) |
c906108c | 1160 | { |
c906108c SS |
1161 | if (!tidstr) |
1162 | { | |
c906108c | 1163 | if (target_has_stack) |
4f8d22e3 PA |
1164 | { |
1165 | if (is_exited (inferior_ptid)) | |
1166 | printf_filtered (_("[Current thread is %d (%s) (exited)]\n"), | |
1167 | pid_to_thread_id (inferior_ptid), | |
1168 | target_tid_to_str (inferior_ptid)); | |
1169 | else | |
1170 | printf_filtered (_("[Current thread is %d (%s)]\n"), | |
1171 | pid_to_thread_id (inferior_ptid), | |
1172 | target_tid_to_str (inferior_ptid)); | |
1173 | } | |
c906108c | 1174 | else |
8a3fe4f8 | 1175 | error (_("No stack.")); |
c906108c SS |
1176 | return; |
1177 | } | |
c5394b80 | 1178 | |
b8fa951a | 1179 | annotate_thread_changed (); |
ce43223b | 1180 | gdb_thread_select (uiout, tidstr, NULL); |
c5394b80 JM |
1181 | } |
1182 | ||
93815fbf VP |
1183 | /* Print notices when new threads are attached and detached. */ |
1184 | int print_thread_events = 1; | |
1185 | static void | |
1186 | show_print_thread_events (struct ui_file *file, int from_tty, | |
1187 | struct cmd_list_element *c, const char *value) | |
1188 | { | |
1189 | fprintf_filtered (file, _("\ | |
1190 | Printing of thread events is %s.\n"), | |
1191 | value); | |
1192 | } | |
1193 | ||
c5394b80 | 1194 | static int |
6949171e | 1195 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
1196 | { |
1197 | int num; | |
1198 | struct thread_info *tp; | |
1199 | ||
81490ea1 | 1200 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
1201 | |
1202 | tp = find_thread_id (num); | |
1203 | ||
8b93c638 | 1204 | if (!tp) |
8a3fe4f8 | 1205 | error (_("Thread ID %d not known."), num); |
c906108c SS |
1206 | |
1207 | if (!thread_alive (tp)) | |
8a3fe4f8 | 1208 | error (_("Thread ID %d has terminated."), num); |
c906108c | 1209 | |
94cc34af PA |
1210 | if (non_stop) |
1211 | context_switch_to (tp->ptid); | |
1212 | else | |
1213 | switch_to_thread (tp->ptid); | |
c906108c | 1214 | |
8b93c638 | 1215 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 1216 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 1217 | ui_out_text (uiout, " ("); |
39f77062 | 1218 | ui_out_text (uiout, target_tid_to_str (inferior_ptid)); |
8b93c638 | 1219 | ui_out_text (uiout, ")]"); |
c5394b80 | 1220 | |
4f8d22e3 PA |
1221 | /* Note that we can't reach this with an exited thread, due to the |
1222 | thread_alive check above. */ | |
1223 | if (tp->state_ == THREAD_RUNNING) | |
94cc34af | 1224 | ui_out_text (uiout, "(running)\n"); |
4f8d22e3 PA |
1225 | else |
1226 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); | |
1227 | ||
1228 | /* Since the current thread may have changed, see if there is any | |
1229 | exited thread we can now delete. */ | |
1230 | prune_threads (); | |
94cc34af | 1231 | |
c5394b80 JM |
1232 | return GDB_RC_OK; |
1233 | } | |
1234 | ||
1235 | enum gdb_rc | |
ce43223b | 1236 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 1237 | { |
b0b13bb4 DJ |
1238 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
1239 | error_message, RETURN_MASK_ALL) < 0) | |
1240 | return GDB_RC_FAIL; | |
1241 | return GDB_RC_OK; | |
c906108c SS |
1242 | } |
1243 | ||
1244 | /* Commands with a prefix of `thread'. */ | |
1245 | struct cmd_list_element *thread_cmd_list = NULL; | |
1246 | ||
1247 | void | |
fba45db2 | 1248 | _initialize_thread (void) |
c906108c SS |
1249 | { |
1250 | static struct cmd_list_element *thread_apply_list = NULL; | |
94cc34af | 1251 | struct cmd_list_element *c; |
c906108c | 1252 | |
94cc34af PA |
1253 | c = add_info ("threads", info_threads_command, |
1254 | _("IDs of currently known threads.")); | |
4f8d22e3 | 1255 | set_cmd_no_selected_thread_ok (c); |
c906108c | 1256 | |
94cc34af | 1257 | c = add_prefix_cmd ("thread", class_run, thread_command, _("\ |
1bedd215 AC |
1258 | Use this command to switch between threads.\n\ |
1259 | The new thread ID must be currently known."), | |
94cc34af | 1260 | &thread_cmd_list, "thread ", 1, &cmdlist); |
4f8d22e3 | 1261 | set_cmd_no_selected_thread_ok (c); |
c906108c | 1262 | |
4f8d22e3 PA |
1263 | c = add_prefix_cmd ("apply", class_run, thread_apply_command, |
1264 | _("Apply a command to a list of threads."), | |
1265 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); | |
4f8d22e3 | 1266 | set_cmd_no_selected_thread_ok (c); |
c906108c | 1267 | |
4f8d22e3 PA |
1268 | c = add_cmd ("all", class_run, thread_apply_all_command, |
1269 | _("Apply a command to all threads."), &thread_apply_list); | |
4f8d22e3 | 1270 | set_cmd_no_selected_thread_ok (c); |
c906108c SS |
1271 | |
1272 | if (!xdb_commands) | |
1273 | add_com_alias ("t", "thread", class_run, 1); | |
93815fbf VP |
1274 | |
1275 | add_setshow_boolean_cmd ("thread-events", no_class, | |
1276 | &print_thread_events, _("\ | |
11c68c47 EZ |
1277 | Set printing of thread events (such as thread start and exit)."), _("\ |
1278 | Show printing of thread events (such as thread start and exit)."), NULL, | |
93815fbf VP |
1279 | NULL, |
1280 | show_print_thread_events, | |
1281 | &setprintlist, &showprintlist); | |
c906108c | 1282 | } |