Commit | Line | Data |
---|---|---|
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" |
c906108c | 43 | |
0d06e24b | 44 | /* Definition of struct thread_info exported to gdbthread.h */ |
c906108c SS |
45 | |
46 | /* Prototypes for exported functions. */ | |
47 | ||
a14ed312 | 48 | void _initialize_thread (void); |
c906108c SS |
49 | |
50 | /* Prototypes for local functions. */ | |
51 | ||
c906108c SS |
52 | static struct thread_info *thread_list = NULL; |
53 | static int highest_thread_num; | |
54 | ||
a14ed312 | 55 | static struct thread_info *find_thread_id (int num); |
c906108c | 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); |
99b3d574 DP |
64 | static struct cleanup *make_cleanup_restore_current_thread (ptid_t, |
65 | struct frame_id); | |
c906108c | 66 | |
8601f500 MS |
67 | void |
68 | delete_step_resume_breakpoint (void *arg) | |
69 | { | |
70 | struct breakpoint **breakpointp = (struct breakpoint **) arg; | |
71 | struct thread_info *tp; | |
72 | ||
73 | if (*breakpointp != NULL) | |
74 | { | |
75 | delete_breakpoint (*breakpointp); | |
76 | for (tp = thread_list; tp; tp = tp->next) | |
77 | if (tp->step_resume_breakpoint == *breakpointp) | |
78 | tp->step_resume_breakpoint = NULL; | |
79 | ||
80 | *breakpointp = NULL; | |
81 | } | |
82 | } | |
83 | ||
7c952b6d ND |
84 | static void |
85 | free_thread (struct thread_info *tp) | |
86 | { | |
87 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
4d8453a5 DJ |
88 | but not any user-specified thread-specific breakpoints. We can not |
89 | delete the breakpoint straight-off, because the inferior might not | |
90 | be stopped at the moment. */ | |
7c952b6d | 91 | if (tp->step_resume_breakpoint) |
4d8453a5 | 92 | tp->step_resume_breakpoint->disposition = disp_del_at_next_stop; |
7c952b6d ND |
93 | |
94 | /* FIXME: do I ever need to call the back-end to give it a | |
95 | chance at this private data before deleting the thread? */ | |
96 | if (tp->private) | |
b8c9b27d | 97 | xfree (tp->private); |
7c952b6d | 98 | |
b8c9b27d | 99 | xfree (tp); |
7c952b6d ND |
100 | } |
101 | ||
c906108c | 102 | void |
fba45db2 | 103 | init_thread_list (void) |
c906108c SS |
104 | { |
105 | struct thread_info *tp, *tpnext; | |
106 | ||
7c952b6d | 107 | highest_thread_num = 0; |
c906108c SS |
108 | if (!thread_list) |
109 | return; | |
110 | ||
111 | for (tp = thread_list; tp; tp = tpnext) | |
112 | { | |
113 | tpnext = tp->next; | |
7c952b6d | 114 | free_thread (tp); |
c906108c SS |
115 | } |
116 | ||
117 | thread_list = NULL; | |
c906108c SS |
118 | } |
119 | ||
0d06e24b | 120 | struct thread_info * |
93815fbf | 121 | add_thread_silent (ptid_t ptid) |
c906108c SS |
122 | { |
123 | struct thread_info *tp; | |
124 | ||
6c0d3f6a MS |
125 | tp = (struct thread_info *) xmalloc (sizeof (*tp)); |
126 | memset (tp, 0, sizeof (*tp)); | |
39f77062 | 127 | tp->ptid = ptid; |
c906108c | 128 | tp->num = ++highest_thread_num; |
c906108c SS |
129 | tp->next = thread_list; |
130 | thread_list = tp; | |
0d06e24b | 131 | return tp; |
c906108c SS |
132 | } |
133 | ||
93815fbf VP |
134 | struct thread_info * |
135 | add_thread (ptid_t ptid) | |
136 | { | |
137 | struct thread_info *result = add_thread_silent (ptid); | |
138 | ||
139 | if (print_thread_events) | |
fd532e2e | 140 | printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid)); |
683f2885 VP |
141 | |
142 | observer_notify_new_thread (result); | |
93815fbf VP |
143 | |
144 | return result; | |
145 | } | |
146 | ||
c906108c | 147 | void |
39f77062 | 148 | delete_thread (ptid_t ptid) |
c906108c SS |
149 | { |
150 | struct thread_info *tp, *tpprev; | |
151 | ||
152 | tpprev = NULL; | |
153 | ||
154 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 155 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
156 | break; |
157 | ||
158 | if (!tp) | |
159 | return; | |
160 | ||
161 | if (tpprev) | |
162 | tpprev->next = tp->next; | |
163 | else | |
164 | thread_list = tp->next; | |
165 | ||
7c952b6d | 166 | free_thread (tp); |
c906108c SS |
167 | } |
168 | ||
169 | static struct thread_info * | |
fba45db2 | 170 | find_thread_id (int num) |
c906108c SS |
171 | { |
172 | struct thread_info *tp; | |
173 | ||
174 | for (tp = thread_list; tp; tp = tp->next) | |
175 | if (tp->num == num) | |
176 | return tp; | |
177 | ||
178 | return NULL; | |
179 | } | |
180 | ||
39f77062 | 181 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 182 | struct thread_info * |
39f77062 | 183 | find_thread_pid (ptid_t ptid) |
0d06e24b JM |
184 | { |
185 | struct thread_info *tp; | |
186 | ||
187 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 188 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
189 | return tp; |
190 | ||
191 | return NULL; | |
192 | } | |
193 | ||
194 | /* | |
195 | * Thread iterator function. | |
196 | * | |
197 | * Calls a callback function once for each thread, so long as | |
198 | * the callback function returns false. If the callback function | |
199 | * returns true, the iteration will end and the current thread | |
200 | * will be returned. This can be useful for implementing a | |
201 | * search for a thread with arbitrary attributes, or for applying | |
202 | * some operation to every thread. | |
203 | * | |
204 | * FIXME: some of the existing functionality, such as | |
205 | * "Thread apply all", might be rewritten using this functionality. | |
206 | */ | |
207 | ||
208 | struct thread_info * | |
fd118b61 KB |
209 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
210 | void *data) | |
0d06e24b JM |
211 | { |
212 | struct thread_info *tp; | |
213 | ||
214 | for (tp = thread_list; tp; tp = tp->next) | |
215 | if ((*callback) (tp, data)) | |
216 | return tp; | |
217 | ||
218 | return NULL; | |
219 | } | |
220 | ||
c906108c | 221 | int |
fba45db2 | 222 | valid_thread_id (int num) |
c906108c SS |
223 | { |
224 | struct thread_info *tp; | |
225 | ||
226 | for (tp = thread_list; tp; tp = tp->next) | |
227 | if (tp->num == num) | |
228 | return 1; | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | int | |
39f77062 | 234 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
235 | { |
236 | struct thread_info *tp; | |
237 | ||
238 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 239 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
240 | return tp->num; |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
39f77062 | 245 | ptid_t |
fba45db2 | 246 | thread_id_to_pid (int num) |
c906108c SS |
247 | { |
248 | struct thread_info *thread = find_thread_id (num); | |
249 | if (thread) | |
39f77062 | 250 | return thread->ptid; |
c906108c | 251 | else |
39f77062 | 252 | return pid_to_ptid (-1); |
c906108c SS |
253 | } |
254 | ||
255 | int | |
39f77062 | 256 | in_thread_list (ptid_t ptid) |
c906108c SS |
257 | { |
258 | struct thread_info *tp; | |
259 | ||
260 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 261 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
262 | return 1; |
263 | ||
264 | return 0; /* Never heard of 'im */ | |
265 | } | |
8926118c | 266 | |
8b93c638 JM |
267 | /* Print a list of thread ids currently known, and the total number of |
268 | threads. To be used from within catch_errors. */ | |
6949171e JJ |
269 | static int |
270 | do_captured_list_thread_ids (struct ui_out *uiout, void *arg) | |
8b93c638 JM |
271 | { |
272 | struct thread_info *tp; | |
273 | int num = 0; | |
3b31d625 | 274 | struct cleanup *cleanup_chain; |
8b93c638 | 275 | |
7990a578 EZ |
276 | prune_threads (); |
277 | target_find_new_threads (); | |
278 | ||
3b31d625 | 279 | cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "thread-ids"); |
8b93c638 JM |
280 | |
281 | for (tp = thread_list; tp; tp = tp->next) | |
282 | { | |
283 | num++; | |
284 | ui_out_field_int (uiout, "thread-id", tp->num); | |
285 | } | |
286 | ||
3b31d625 | 287 | do_cleanups (cleanup_chain); |
8b93c638 JM |
288 | ui_out_field_int (uiout, "number-of-threads", num); |
289 | return GDB_RC_OK; | |
290 | } | |
291 | ||
292 | /* Official gdblib interface function to get a list of thread ids and | |
293 | the total number. */ | |
294 | enum gdb_rc | |
ce43223b | 295 | gdb_list_thread_ids (struct ui_out *uiout, char **error_message) |
8b93c638 | 296 | { |
b0b13bb4 DJ |
297 | if (catch_exceptions_with_msg (uiout, do_captured_list_thread_ids, NULL, |
298 | error_message, RETURN_MASK_ALL) < 0) | |
299 | return GDB_RC_FAIL; | |
300 | return GDB_RC_OK; | |
8b93c638 | 301 | } |
c906108c SS |
302 | |
303 | /* Load infrun state for the thread PID. */ | |
304 | ||
c5aa993b | 305 | void |
6949171e JJ |
306 | load_infrun_state (ptid_t ptid, |
307 | CORE_ADDR *prev_pc, | |
6c0d3f6a | 308 | int *trap_expected, |
fba45db2 | 309 | struct breakpoint **step_resume_breakpoint, |
6949171e | 310 | CORE_ADDR *step_range_start, |
6c0d3f6a | 311 | CORE_ADDR *step_range_end, |
6949171e | 312 | struct frame_id *step_frame_id, |
6c0d3f6a | 313 | int *handling_longjmp, |
ca67fcb8 | 314 | int *stepping_over_breakpoint, |
6c0d3f6a | 315 | int *stepping_through_solib_after_catch, |
fba45db2 | 316 | bpstat *stepping_through_solib_catchpoints, |
6949171e | 317 | int *current_line, |
f2c9ca08 | 318 | struct symtab **current_symtab) |
c906108c SS |
319 | { |
320 | struct thread_info *tp; | |
321 | ||
322 | /* If we can't find the thread, then we're debugging a single threaded | |
323 | process. No need to do anything in that case. */ | |
39f77062 | 324 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
325 | if (tp == NULL) |
326 | return; | |
327 | ||
328 | *prev_pc = tp->prev_pc; | |
6c0d3f6a | 329 | *trap_expected = tp->trap_expected; |
c906108c SS |
330 | *step_resume_breakpoint = tp->step_resume_breakpoint; |
331 | *step_range_start = tp->step_range_start; | |
332 | *step_range_end = tp->step_range_end; | |
aa0cd9c1 | 333 | *step_frame_id = tp->step_frame_id; |
c906108c | 334 | *handling_longjmp = tp->handling_longjmp; |
ca67fcb8 | 335 | *stepping_over_breakpoint = tp->stepping_over_breakpoint; |
6949171e JJ |
336 | *stepping_through_solib_after_catch = |
337 | tp->stepping_through_solib_after_catch; | |
338 | *stepping_through_solib_catchpoints = | |
339 | tp->stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
340 | *current_line = tp->current_line; |
341 | *current_symtab = tp->current_symtab; | |
c906108c SS |
342 | } |
343 | ||
344 | /* Save infrun state for the thread PID. */ | |
345 | ||
c5aa993b | 346 | void |
6949171e JJ |
347 | save_infrun_state (ptid_t ptid, |
348 | CORE_ADDR prev_pc, | |
6c0d3f6a | 349 | int trap_expected, |
fba45db2 | 350 | struct breakpoint *step_resume_breakpoint, |
6949171e | 351 | CORE_ADDR step_range_start, |
6c0d3f6a | 352 | CORE_ADDR step_range_end, |
6949171e | 353 | const struct frame_id *step_frame_id, |
6c0d3f6a | 354 | int handling_longjmp, |
ca67fcb8 | 355 | int stepping_over_breakpoint, |
6c0d3f6a | 356 | int stepping_through_solib_after_catch, |
fba45db2 | 357 | bpstat stepping_through_solib_catchpoints, |
6c0d3f6a | 358 | int current_line, |
f2c9ca08 | 359 | struct symtab *current_symtab) |
c906108c SS |
360 | { |
361 | struct thread_info *tp; | |
362 | ||
363 | /* If we can't find the thread, then we're debugging a single-threaded | |
364 | process. Nothing to do in that case. */ | |
39f77062 | 365 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
366 | if (tp == NULL) |
367 | return; | |
368 | ||
369 | tp->prev_pc = prev_pc; | |
6c0d3f6a | 370 | tp->trap_expected = trap_expected; |
c906108c SS |
371 | tp->step_resume_breakpoint = step_resume_breakpoint; |
372 | tp->step_range_start = step_range_start; | |
373 | tp->step_range_end = step_range_end; | |
aa0cd9c1 | 374 | tp->step_frame_id = (*step_frame_id); |
c906108c | 375 | tp->handling_longjmp = handling_longjmp; |
ca67fcb8 | 376 | tp->stepping_over_breakpoint = stepping_over_breakpoint; |
c906108c SS |
377 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; |
378 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
6c0d3f6a MS |
379 | tp->current_line = current_line; |
380 | tp->current_symtab = current_symtab; | |
c906108c SS |
381 | } |
382 | ||
383 | /* Return true if TP is an active thread. */ | |
384 | static int | |
fba45db2 | 385 | thread_alive (struct thread_info *tp) |
c906108c | 386 | { |
39f77062 | 387 | if (PIDGET (tp->ptid) == -1) |
c906108c | 388 | return 0; |
39f77062 | 389 | if (!target_thread_alive (tp->ptid)) |
c906108c | 390 | { |
39f77062 | 391 | tp->ptid = pid_to_ptid (-1); /* Mark it as dead */ |
c906108c SS |
392 | return 0; |
393 | } | |
394 | return 1; | |
395 | } | |
396 | ||
397 | static void | |
fba45db2 | 398 | prune_threads (void) |
c906108c | 399 | { |
d4f3574e | 400 | struct thread_info *tp, *next; |
c906108c | 401 | |
c906108c SS |
402 | for (tp = thread_list; tp; tp = next) |
403 | { | |
404 | next = tp->next; | |
405 | if (!thread_alive (tp)) | |
39f77062 | 406 | delete_thread (tp->ptid); |
c906108c SS |
407 | } |
408 | } | |
409 | ||
8e8901c5 VP |
410 | /* Prints the list of threads and their details on UIOUT. |
411 | This is a version of 'info_thread_command' suitable for | |
412 | use from MI. | |
413 | If REQESTED_THREAD is not -1, it's the GDB id of the thread | |
414 | that should be printed. Otherwise, all threads are | |
415 | printed. */ | |
416 | void | |
417 | print_thread_info (struct ui_out *uiout, int requested_thread) | |
c906108c SS |
418 | { |
419 | struct thread_info *tp; | |
39f77062 | 420 | ptid_t current_ptid; |
c5aa993b | 421 | struct frame_info *cur_frame; |
99b3d574 DP |
422 | struct cleanup *old_chain; |
423 | struct frame_id saved_frame_id; | |
0d06e24b | 424 | char *extra_info; |
8e8901c5 | 425 | int current_thread = -1; |
c906108c | 426 | |
99b3d574 DP |
427 | /* Backup current thread and selected frame. */ |
428 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
429 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
430 | ||
8e8901c5 VP |
431 | make_cleanup_ui_out_list_begin_end (uiout, "threads"); |
432 | ||
c906108c | 433 | prune_threads (); |
b83266a0 | 434 | target_find_new_threads (); |
39f77062 | 435 | current_ptid = inferior_ptid; |
c906108c SS |
436 | for (tp = thread_list; tp; tp = tp->next) |
437 | { | |
8e8901c5 VP |
438 | struct cleanup *chain2; |
439 | ||
440 | if (requested_thread != -1 && tp->num != requested_thread) | |
441 | continue; | |
442 | ||
443 | chain2 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
444 | ||
39f77062 | 445 | if (ptid_equal (tp->ptid, current_ptid)) |
8e8901c5 VP |
446 | { |
447 | current_thread = tp->num; | |
448 | ui_out_text (uiout, "* "); | |
449 | } | |
c906108c | 450 | else |
8e8901c5 | 451 | ui_out_text (uiout, " "); |
c906108c | 452 | |
8e8901c5 VP |
453 | ui_out_field_int (uiout, "id", tp->num); |
454 | ui_out_text (uiout, " "); | |
455 | ui_out_field_string (uiout, "target-id", target_tid_to_str (tp->ptid)); | |
0d06e24b JM |
456 | |
457 | extra_info = target_extra_thread_info (tp); | |
458 | if (extra_info) | |
8e8901c5 VP |
459 | { |
460 | ui_out_text (uiout, " ("); | |
461 | ui_out_field_string (uiout, "details", extra_info); | |
462 | ui_out_text (uiout, ")"); | |
463 | } | |
464 | ui_out_text (uiout, " "); | |
99b3d574 | 465 | /* That switch put us at the top of the stack (leaf frame). */ |
39f77062 | 466 | switch_to_thread (tp->ptid); |
8e8901c5 VP |
467 | print_stack_frame (get_selected_frame (NULL), |
468 | /* For MI output, print frame level. */ | |
469 | ui_out_is_mi_like_p (uiout), | |
470 | LOCATION); | |
471 | ||
472 | do_cleanups (chain2); | |
c906108c SS |
473 | } |
474 | ||
99b3d574 DP |
475 | /* Restores the current thread and the frame selected before |
476 | the "info threads" command. */ | |
477 | do_cleanups (old_chain); | |
c906108c | 478 | |
8e8901c5 VP |
479 | if (requested_thread == -1) |
480 | { | |
0bcd3e20 VP |
481 | gdb_assert (current_thread != -1 || !thread_list); |
482 | if (current_thread != -1 && ui_out_is_mi_like_p (uiout)) | |
8e8901c5 VP |
483 | ui_out_field_int (uiout, "current-thread-id", current_thread); |
484 | } | |
485 | ||
99b3d574 DP |
486 | /* If case we were not able to find the original frame, print the |
487 | new selected frame. */ | |
488 | if (frame_find_by_id (saved_frame_id) == NULL) | |
c906108c | 489 | { |
8a3fe4f8 | 490 | warning (_("Couldn't restore frame in current thread, at frame 0")); |
8e8901c5 VP |
491 | /* For MI, we should probably have a notification about |
492 | current frame change. But this error is not very likely, so | |
493 | don't bother for now. */ | |
494 | if (!ui_out_is_mi_like_p (uiout)) | |
495 | print_stack_frame (get_selected_frame (NULL), 0, LOCATION); | |
c906108c | 496 | } |
c906108c SS |
497 | } |
498 | ||
8e8901c5 VP |
499 | |
500 | /* Print information about currently known threads | |
501 | ||
502 | * Note: this has the drawback that it _really_ switches | |
503 | * threads, which frees the frame cache. A no-side | |
504 | * effects info-threads command would be nicer. | |
505 | */ | |
506 | ||
507 | static void | |
508 | info_threads_command (char *arg, int from_tty) | |
509 | { | |
510 | print_thread_info (uiout, -1); | |
511 | } | |
512 | ||
c906108c SS |
513 | /* Switch from one thread to another. */ |
514 | ||
6a6b96b9 | 515 | void |
39f77062 | 516 | switch_to_thread (ptid_t ptid) |
c906108c | 517 | { |
39f77062 | 518 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
519 | return; |
520 | ||
39f77062 | 521 | inferior_ptid = ptid; |
35f196d9 | 522 | reinit_frame_cache (); |
c906108c | 523 | registers_changed (); |
c5aa993b | 524 | stop_pc = read_pc (); |
c906108c SS |
525 | } |
526 | ||
527 | static void | |
39f77062 | 528 | restore_current_thread (ptid_t ptid) |
c906108c | 529 | { |
6949171e | 530 | if (!ptid_equal (ptid, inferior_ptid)) |
c906108c | 531 | { |
39f77062 | 532 | switch_to_thread (ptid); |
99b3d574 DP |
533 | } |
534 | } | |
535 | ||
536 | static void | |
537 | restore_selected_frame (struct frame_id a_frame_id) | |
538 | { | |
539 | struct frame_info *selected_frame_info = NULL; | |
540 | ||
541 | if (frame_id_eq (a_frame_id, null_frame_id)) | |
542 | return; | |
543 | ||
544 | if ((selected_frame_info = frame_find_by_id (a_frame_id)) != NULL) | |
545 | { | |
546 | select_frame (selected_frame_info); | |
c906108c SS |
547 | } |
548 | } | |
549 | ||
6ecce94d AC |
550 | struct current_thread_cleanup |
551 | { | |
39f77062 | 552 | ptid_t inferior_ptid; |
99b3d574 | 553 | struct frame_id selected_frame_id; |
6ecce94d AC |
554 | }; |
555 | ||
556 | static void | |
557 | do_restore_current_thread_cleanup (void *arg) | |
558 | { | |
559 | struct current_thread_cleanup *old = arg; | |
39f77062 | 560 | restore_current_thread (old->inferior_ptid); |
99b3d574 | 561 | restore_selected_frame (old->selected_frame_id); |
b8c9b27d | 562 | xfree (old); |
6ecce94d AC |
563 | } |
564 | ||
565 | static struct cleanup * | |
99b3d574 DP |
566 | make_cleanup_restore_current_thread (ptid_t inferior_ptid, |
567 | struct frame_id a_frame_id) | |
6ecce94d AC |
568 | { |
569 | struct current_thread_cleanup *old | |
570 | = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 571 | old->inferior_ptid = inferior_ptid; |
99b3d574 | 572 | old->selected_frame_id = a_frame_id; |
6ecce94d AC |
573 | return make_cleanup (do_restore_current_thread_cleanup, old); |
574 | } | |
575 | ||
c906108c SS |
576 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
577 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
578 | of two numbers seperated by a hyphen. Examples: | |
579 | ||
c5aa993b JM |
580 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
581 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
582 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
583 | */ | |
c906108c SS |
584 | |
585 | static void | |
fba45db2 | 586 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c SS |
587 | { |
588 | struct thread_info *tp; | |
589 | struct cleanup *old_chain; | |
e35ce267 CF |
590 | struct cleanup *saved_cmd_cleanup_chain; |
591 | char *saved_cmd; | |
99b3d574 DP |
592 | struct frame_id saved_frame_id; |
593 | ptid_t current_ptid; | |
594 | int thread_has_changed = 0; | |
c906108c SS |
595 | |
596 | if (cmd == NULL || *cmd == '\000') | |
8a3fe4f8 | 597 | error (_("Please specify a command following the thread ID list")); |
99b3d574 DP |
598 | |
599 | current_ptid = inferior_ptid; | |
600 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
601 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
c906108c | 602 | |
e9d196c5 MS |
603 | /* It is safe to update the thread list now, before |
604 | traversing it for "thread apply all". MVS */ | |
605 | target_find_new_threads (); | |
606 | ||
e35ce267 CF |
607 | /* Save a copy of the command in case it is clobbered by |
608 | execute_command */ | |
5b616ba1 | 609 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 610 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
611 | for (tp = thread_list; tp; tp = tp->next) |
612 | if (thread_alive (tp)) | |
613 | { | |
39f77062 | 614 | switch_to_thread (tp->ptid); |
a3f17187 | 615 | printf_filtered (_("\nThread %d (%s):\n"), |
6949171e | 616 | tp->num, target_tid_to_str (inferior_ptid)); |
c906108c | 617 | execute_command (cmd, from_tty); |
6949171e | 618 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c | 619 | } |
6ecce94d | 620 | |
99b3d574 DP |
621 | if (!ptid_equal (current_ptid, inferior_ptid)) |
622 | thread_has_changed = 1; | |
623 | ||
e35ce267 | 624 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 625 | do_cleanups (old_chain); |
99b3d574 DP |
626 | /* Print stack frame only if we changed thread. */ |
627 | if (thread_has_changed) | |
628 | print_stack_frame (get_current_frame (), 1, SRC_LINE); | |
629 | ||
c906108c SS |
630 | } |
631 | ||
632 | static void | |
fba45db2 | 633 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
634 | { |
635 | char *cmd; | |
636 | char *p; | |
637 | struct cleanup *old_chain; | |
e35ce267 CF |
638 | struct cleanup *saved_cmd_cleanup_chain; |
639 | char *saved_cmd; | |
99b3d574 DP |
640 | struct frame_id saved_frame_id; |
641 | ptid_t current_ptid; | |
642 | int thread_has_changed = 0; | |
c906108c SS |
643 | |
644 | if (tidlist == NULL || *tidlist == '\000') | |
8a3fe4f8 | 645 | error (_("Please specify a thread ID list")); |
c906108c | 646 | |
c5aa993b | 647 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
648 | |
649 | if (*cmd == '\000') | |
8a3fe4f8 | 650 | error (_("Please specify a command following the thread ID list")); |
c906108c | 651 | |
99b3d574 DP |
652 | current_ptid = inferior_ptid; |
653 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
654 | old_chain = make_cleanup_restore_current_thread (inferior_ptid, saved_frame_id); | |
c906108c | 655 | |
e35ce267 CF |
656 | /* Save a copy of the command in case it is clobbered by |
657 | execute_command */ | |
5b616ba1 | 658 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 659 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
660 | while (tidlist < cmd) |
661 | { | |
662 | struct thread_info *tp; | |
663 | int start, end; | |
664 | ||
665 | start = strtol (tidlist, &p, 10); | |
666 | if (p == tidlist) | |
8a3fe4f8 | 667 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
668 | tidlist = p; |
669 | ||
670 | while (*tidlist == ' ' || *tidlist == '\t') | |
671 | tidlist++; | |
672 | ||
673 | if (*tidlist == '-') /* Got a range of IDs? */ | |
674 | { | |
c5aa993b | 675 | tidlist++; /* Skip the - */ |
c906108c SS |
676 | end = strtol (tidlist, &p, 10); |
677 | if (p == tidlist) | |
8a3fe4f8 | 678 | error (_("Error parsing %s"), tidlist); |
c906108c SS |
679 | tidlist = p; |
680 | ||
681 | while (*tidlist == ' ' || *tidlist == '\t') | |
682 | tidlist++; | |
683 | } | |
684 | else | |
685 | end = start; | |
686 | ||
687 | for (; start <= end; start++) | |
688 | { | |
689 | tp = find_thread_id (start); | |
690 | ||
691 | if (!tp) | |
8a3fe4f8 | 692 | warning (_("Unknown thread %d."), start); |
c906108c | 693 | else if (!thread_alive (tp)) |
8a3fe4f8 | 694 | warning (_("Thread %d has terminated."), start); |
c906108c SS |
695 | else |
696 | { | |
39f77062 | 697 | switch_to_thread (tp->ptid); |
a3f17187 | 698 | printf_filtered (_("\nThread %d (%s):\n"), tp->num, |
39f77062 | 699 | target_tid_to_str (inferior_ptid)); |
c906108c | 700 | execute_command (cmd, from_tty); |
e35ce267 | 701 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c SS |
702 | } |
703 | } | |
704 | } | |
6ecce94d | 705 | |
99b3d574 DP |
706 | if (!ptid_equal (current_ptid, inferior_ptid)) |
707 | thread_has_changed = 1; | |
708 | ||
e35ce267 | 709 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 710 | do_cleanups (old_chain); |
99b3d574 DP |
711 | /* Print stack frame only if we changed thread. */ |
712 | if (thread_has_changed) | |
713 | print_stack_frame (get_current_frame (), 1, SRC_LINE); | |
c906108c SS |
714 | } |
715 | ||
716 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
717 | if prefix of arg is `apply'. */ | |
718 | ||
719 | static void | |
fba45db2 | 720 | thread_command (char *tidstr, int from_tty) |
c906108c | 721 | { |
c906108c SS |
722 | if (!tidstr) |
723 | { | |
724 | /* Don't generate an error, just say which thread is current. */ | |
725 | if (target_has_stack) | |
a3f17187 | 726 | printf_filtered (_("[Current thread is %d (%s)]\n"), |
39f77062 | 727 | pid_to_thread_id (inferior_ptid), |
007d08bb | 728 | target_tid_to_str (inferior_ptid)); |
c906108c | 729 | else |
8a3fe4f8 | 730 | error (_("No stack.")); |
c906108c SS |
731 | return; |
732 | } | |
c5394b80 | 733 | |
ce43223b | 734 | gdb_thread_select (uiout, tidstr, NULL); |
c5394b80 JM |
735 | } |
736 | ||
93815fbf VP |
737 | /* Print notices when new threads are attached and detached. */ |
738 | int print_thread_events = 1; | |
739 | static void | |
740 | show_print_thread_events (struct ui_file *file, int from_tty, | |
741 | struct cmd_list_element *c, const char *value) | |
742 | { | |
743 | fprintf_filtered (file, _("\ | |
744 | Printing of thread events is %s.\n"), | |
745 | value); | |
746 | } | |
747 | ||
c5394b80 | 748 | static int |
6949171e | 749 | do_captured_thread_select (struct ui_out *uiout, void *tidstr) |
c5394b80 JM |
750 | { |
751 | int num; | |
752 | struct thread_info *tp; | |
753 | ||
81490ea1 | 754 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
755 | |
756 | tp = find_thread_id (num); | |
757 | ||
8b93c638 | 758 | if (!tp) |
8a3fe4f8 | 759 | error (_("Thread ID %d not known."), num); |
c906108c SS |
760 | |
761 | if (!thread_alive (tp)) | |
8a3fe4f8 | 762 | error (_("Thread ID %d has terminated."), num); |
c906108c | 763 | |
39f77062 | 764 | switch_to_thread (tp->ptid); |
c906108c | 765 | |
8b93c638 | 766 | ui_out_text (uiout, "[Switching to thread "); |
39f77062 | 767 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 | 768 | ui_out_text (uiout, " ("); |
39f77062 | 769 | ui_out_text (uiout, target_tid_to_str (inferior_ptid)); |
8b93c638 | 770 | ui_out_text (uiout, ")]"); |
c5394b80 | 771 | |
b04f3ab4 | 772 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
c5394b80 JM |
773 | return GDB_RC_OK; |
774 | } | |
775 | ||
776 | enum gdb_rc | |
ce43223b | 777 | gdb_thread_select (struct ui_out *uiout, char *tidstr, char **error_message) |
c5394b80 | 778 | { |
b0b13bb4 DJ |
779 | if (catch_exceptions_with_msg (uiout, do_captured_thread_select, tidstr, |
780 | error_message, RETURN_MASK_ALL) < 0) | |
781 | return GDB_RC_FAIL; | |
782 | return GDB_RC_OK; | |
c906108c SS |
783 | } |
784 | ||
785 | /* Commands with a prefix of `thread'. */ | |
786 | struct cmd_list_element *thread_cmd_list = NULL; | |
787 | ||
788 | void | |
fba45db2 | 789 | _initialize_thread (void) |
c906108c SS |
790 | { |
791 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c SS |
792 | |
793 | add_info ("threads", info_threads_command, | |
1bedd215 | 794 | _("IDs of currently known threads.")); |
c906108c | 795 | |
1bedd215 AC |
796 | add_prefix_cmd ("thread", class_run, thread_command, _("\ |
797 | Use this command to switch between threads.\n\ | |
798 | The new thread ID must be currently known."), | |
799 | &thread_cmd_list, "thread ", 1, &cmdlist); | |
c906108c SS |
800 | |
801 | add_prefix_cmd ("apply", class_run, thread_apply_command, | |
1bedd215 | 802 | _("Apply a command to a list of threads."), |
ad21ceb0 | 803 | &thread_apply_list, "thread apply ", 1, &thread_cmd_list); |
c906108c SS |
804 | |
805 | add_cmd ("all", class_run, thread_apply_all_command, | |
1a966eab | 806 | _("Apply a command to all threads."), &thread_apply_list); |
c906108c SS |
807 | |
808 | if (!xdb_commands) | |
809 | add_com_alias ("t", "thread", class_run, 1); | |
93815fbf VP |
810 | |
811 | add_setshow_boolean_cmd ("thread-events", no_class, | |
812 | &print_thread_events, _("\ | |
813 | Set printing of thread events (e.g., thread start and exit)."), _("\ | |
814 | Show printing of thread events (e.g., thread start and exit)."), NULL, | |
815 | NULL, | |
816 | show_print_thread_events, | |
817 | &setprintlist, &showprintlist); | |
c906108c | 818 | } |