Commit | Line | Data |
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c906108c | 1 | /* Multi-process/thread control for GDB, the GNU debugger. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 | |
c906108c | 4 | Free Software Foundation, Inc. |
b6ba6518 KB |
5 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
6 | ||
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 | |
12 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
26 | #include "symtab.h" | |
27 | #include "frame.h" | |
28 | #include "inferior.h" | |
29 | #include "environ.h" | |
30 | #include "value.h" | |
31 | #include "target.h" | |
32 | #include "gdbthread.h" | |
33 | #include "command.h" | |
34 | #include "gdbcmd.h" | |
4e052eda | 35 | #include "regcache.h" |
5b7f31a4 | 36 | #include "gdb.h" |
c906108c SS |
37 | |
38 | #include <ctype.h> | |
39 | #include <sys/types.h> | |
40 | #include <signal.h> | |
8b93c638 JM |
41 | #ifdef UI_OUT |
42 | #include "ui-out.h" | |
43 | #endif | |
c906108c | 44 | |
c5aa993b | 45 | /*#include "lynxos-core.h" */ |
c906108c | 46 | |
0d06e24b | 47 | /* Definition of struct thread_info exported to gdbthread.h */ |
c906108c SS |
48 | |
49 | /* Prototypes for exported functions. */ | |
50 | ||
a14ed312 | 51 | void _initialize_thread (void); |
c906108c SS |
52 | |
53 | /* Prototypes for local functions. */ | |
54 | ||
c906108c SS |
55 | static struct thread_info *thread_list = NULL; |
56 | static int highest_thread_num; | |
57 | ||
a14ed312 | 58 | static struct thread_info *find_thread_id (int num); |
c906108c | 59 | |
a14ed312 KB |
60 | static void thread_command (char *tidstr, int from_tty); |
61 | static void thread_apply_all_command (char *, int); | |
62 | static int thread_alive (struct thread_info *); | |
63 | static void info_threads_command (char *, int); | |
64 | static void thread_apply_command (char *, int); | |
39f77062 KB |
65 | static void restore_current_thread (ptid_t); |
66 | static void switch_to_thread (ptid_t ptid); | |
a14ed312 | 67 | static void prune_threads (void); |
c906108c | 68 | |
8601f500 MS |
69 | void |
70 | delete_step_resume_breakpoint (void *arg) | |
71 | { | |
72 | struct breakpoint **breakpointp = (struct breakpoint **) arg; | |
73 | struct thread_info *tp; | |
74 | ||
75 | if (*breakpointp != NULL) | |
76 | { | |
77 | delete_breakpoint (*breakpointp); | |
78 | for (tp = thread_list; tp; tp = tp->next) | |
79 | if (tp->step_resume_breakpoint == *breakpointp) | |
80 | tp->step_resume_breakpoint = NULL; | |
81 | ||
82 | *breakpointp = NULL; | |
83 | } | |
84 | } | |
85 | ||
7c952b6d ND |
86 | static void |
87 | free_thread (struct thread_info *tp) | |
88 | { | |
89 | /* NOTE: this will take care of any left-over step_resume breakpoints, | |
90 | but not any user-specified thread-specific breakpoints. */ | |
91 | if (tp->step_resume_breakpoint) | |
92 | delete_breakpoint (tp->step_resume_breakpoint); | |
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 JM |
120 | /* add_thread now returns a pointer to the new thread_info, |
121 | so that back_ends can initialize their private data. */ | |
122 | ||
123 | struct thread_info * | |
39f77062 | 124 | add_thread (ptid_t ptid) |
c906108c SS |
125 | { |
126 | struct thread_info *tp; | |
127 | ||
6c0d3f6a MS |
128 | tp = (struct thread_info *) xmalloc (sizeof (*tp)); |
129 | memset (tp, 0, sizeof (*tp)); | |
39f77062 | 130 | tp->ptid = ptid; |
c906108c | 131 | tp->num = ++highest_thread_num; |
c906108c SS |
132 | tp->next = thread_list; |
133 | thread_list = tp; | |
0d06e24b | 134 | return tp; |
c906108c SS |
135 | } |
136 | ||
137 | void | |
39f77062 | 138 | delete_thread (ptid_t ptid) |
c906108c SS |
139 | { |
140 | struct thread_info *tp, *tpprev; | |
141 | ||
142 | tpprev = NULL; | |
143 | ||
144 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
39f77062 | 145 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
146 | break; |
147 | ||
148 | if (!tp) | |
149 | return; | |
150 | ||
151 | if (tpprev) | |
152 | tpprev->next = tp->next; | |
153 | else | |
154 | thread_list = tp->next; | |
155 | ||
7c952b6d | 156 | free_thread (tp); |
c906108c SS |
157 | } |
158 | ||
159 | static struct thread_info * | |
fba45db2 | 160 | find_thread_id (int num) |
c906108c SS |
161 | { |
162 | struct thread_info *tp; | |
163 | ||
164 | for (tp = thread_list; tp; tp = tp->next) | |
165 | if (tp->num == num) | |
166 | return tp; | |
167 | ||
168 | return NULL; | |
169 | } | |
170 | ||
39f77062 | 171 | /* Find a thread_info by matching PTID. */ |
0d06e24b | 172 | struct thread_info * |
39f77062 | 173 | find_thread_pid (ptid_t ptid) |
0d06e24b JM |
174 | { |
175 | struct thread_info *tp; | |
176 | ||
177 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 178 | if (ptid_equal (tp->ptid, ptid)) |
0d06e24b JM |
179 | return tp; |
180 | ||
181 | return NULL; | |
182 | } | |
183 | ||
184 | /* | |
185 | * Thread iterator function. | |
186 | * | |
187 | * Calls a callback function once for each thread, so long as | |
188 | * the callback function returns false. If the callback function | |
189 | * returns true, the iteration will end and the current thread | |
190 | * will be returned. This can be useful for implementing a | |
191 | * search for a thread with arbitrary attributes, or for applying | |
192 | * some operation to every thread. | |
193 | * | |
194 | * FIXME: some of the existing functionality, such as | |
195 | * "Thread apply all", might be rewritten using this functionality. | |
196 | */ | |
197 | ||
198 | struct thread_info * | |
fd118b61 KB |
199 | iterate_over_threads (int (*callback) (struct thread_info *, void *), |
200 | void *data) | |
0d06e24b JM |
201 | { |
202 | struct thread_info *tp; | |
203 | ||
204 | for (tp = thread_list; tp; tp = tp->next) | |
205 | if ((*callback) (tp, data)) | |
206 | return tp; | |
207 | ||
208 | return NULL; | |
209 | } | |
210 | ||
c906108c | 211 | int |
fba45db2 | 212 | valid_thread_id (int num) |
c906108c SS |
213 | { |
214 | struct thread_info *tp; | |
215 | ||
216 | for (tp = thread_list; tp; tp = tp->next) | |
217 | if (tp->num == num) | |
218 | return 1; | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | int | |
39f77062 | 224 | pid_to_thread_id (ptid_t ptid) |
c906108c SS |
225 | { |
226 | struct thread_info *tp; | |
227 | ||
228 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 229 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
230 | return tp->num; |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
39f77062 | 235 | ptid_t |
fba45db2 | 236 | thread_id_to_pid (int num) |
c906108c SS |
237 | { |
238 | struct thread_info *thread = find_thread_id (num); | |
239 | if (thread) | |
39f77062 | 240 | return thread->ptid; |
c906108c | 241 | else |
39f77062 | 242 | return pid_to_ptid (-1); |
c906108c SS |
243 | } |
244 | ||
245 | int | |
39f77062 | 246 | in_thread_list (ptid_t ptid) |
c906108c SS |
247 | { |
248 | struct thread_info *tp; | |
249 | ||
250 | for (tp = thread_list; tp; tp = tp->next) | |
39f77062 | 251 | if (ptid_equal (tp->ptid, ptid)) |
c906108c SS |
252 | return 1; |
253 | ||
254 | return 0; /* Never heard of 'im */ | |
255 | } | |
8b93c638 JM |
256 | #ifdef UI_OUT |
257 | /* Print a list of thread ids currently known, and the total number of | |
258 | threads. To be used from within catch_errors. */ | |
259 | static int | |
260 | do_captured_list_thread_ids (void *arg) | |
261 | { | |
262 | struct thread_info *tp; | |
263 | int num = 0; | |
264 | ||
f8e42d24 | 265 | ui_out_tuple_begin (uiout, "thread-ids"); |
8b93c638 JM |
266 | |
267 | for (tp = thread_list; tp; tp = tp->next) | |
268 | { | |
269 | num++; | |
270 | ui_out_field_int (uiout, "thread-id", tp->num); | |
271 | } | |
272 | ||
f8e42d24 | 273 | ui_out_tuple_end (uiout); |
8b93c638 JM |
274 | ui_out_field_int (uiout, "number-of-threads", num); |
275 | return GDB_RC_OK; | |
276 | } | |
277 | ||
278 | /* Official gdblib interface function to get a list of thread ids and | |
279 | the total number. */ | |
280 | enum gdb_rc | |
281 | gdb_list_thread_ids (/* output object */) | |
282 | { | |
283 | return catch_errors (do_captured_list_thread_ids, NULL, | |
284 | NULL, RETURN_MASK_ALL); | |
285 | } | |
286 | #endif | |
c906108c SS |
287 | |
288 | /* Load infrun state for the thread PID. */ | |
289 | ||
c5aa993b | 290 | void |
6c0d3f6a MS |
291 | load_infrun_state (ptid_t ptid, |
292 | CORE_ADDR *prev_pc, | |
293 | CORE_ADDR *prev_func_start, | |
294 | char **prev_func_name, | |
295 | int *trap_expected, | |
fba45db2 KB |
296 | struct breakpoint **step_resume_breakpoint, |
297 | struct breakpoint **through_sigtramp_breakpoint, | |
6c0d3f6a MS |
298 | CORE_ADDR *step_range_start, |
299 | CORE_ADDR *step_range_end, | |
300 | CORE_ADDR *step_frame_address, | |
301 | int *handling_longjmp, | |
302 | int *another_trap, | |
303 | int *stepping_through_solib_after_catch, | |
fba45db2 | 304 | bpstat *stepping_through_solib_catchpoints, |
6c0d3f6a MS |
305 | int *stepping_through_sigtramp, |
306 | int *current_line, | |
307 | struct symtab **current_symtab, | |
308 | CORE_ADDR *step_sp) | |
c906108c SS |
309 | { |
310 | struct thread_info *tp; | |
311 | ||
312 | /* If we can't find the thread, then we're debugging a single threaded | |
313 | process. No need to do anything in that case. */ | |
39f77062 | 314 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
315 | if (tp == NULL) |
316 | return; | |
317 | ||
318 | *prev_pc = tp->prev_pc; | |
319 | *prev_func_start = tp->prev_func_start; | |
320 | *prev_func_name = tp->prev_func_name; | |
6c0d3f6a | 321 | *trap_expected = tp->trap_expected; |
c906108c | 322 | *step_resume_breakpoint = tp->step_resume_breakpoint; |
6c0d3f6a | 323 | *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint; |
c906108c SS |
324 | *step_range_start = tp->step_range_start; |
325 | *step_range_end = tp->step_range_end; | |
326 | *step_frame_address = tp->step_frame_address; | |
c906108c | 327 | *handling_longjmp = tp->handling_longjmp; |
c906108c SS |
328 | *another_trap = tp->another_trap; |
329 | *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch; | |
330 | *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints; | |
331 | *stepping_through_sigtramp = tp->stepping_through_sigtramp; | |
6c0d3f6a MS |
332 | *current_line = tp->current_line; |
333 | *current_symtab = tp->current_symtab; | |
334 | *step_sp = tp->step_sp; | |
c906108c SS |
335 | } |
336 | ||
337 | /* Save infrun state for the thread PID. */ | |
338 | ||
c5aa993b | 339 | void |
6c0d3f6a MS |
340 | save_infrun_state (ptid_t ptid, |
341 | CORE_ADDR prev_pc, | |
342 | CORE_ADDR prev_func_start, | |
343 | char *prev_func_name, | |
344 | int trap_expected, | |
fba45db2 KB |
345 | struct breakpoint *step_resume_breakpoint, |
346 | struct breakpoint *through_sigtramp_breakpoint, | |
6c0d3f6a MS |
347 | CORE_ADDR step_range_start, |
348 | CORE_ADDR step_range_end, | |
349 | CORE_ADDR step_frame_address, | |
350 | int handling_longjmp, | |
351 | int another_trap, | |
352 | int stepping_through_solib_after_catch, | |
fba45db2 | 353 | bpstat stepping_through_solib_catchpoints, |
6c0d3f6a MS |
354 | int stepping_through_sigtramp, |
355 | int current_line, | |
356 | struct symtab *current_symtab, | |
357 | CORE_ADDR step_sp) | |
c906108c SS |
358 | { |
359 | struct thread_info *tp; | |
360 | ||
361 | /* If we can't find the thread, then we're debugging a single-threaded | |
362 | process. Nothing to do in that case. */ | |
39f77062 | 363 | tp = find_thread_id (pid_to_thread_id (ptid)); |
c906108c SS |
364 | if (tp == NULL) |
365 | return; | |
366 | ||
367 | tp->prev_pc = prev_pc; | |
368 | tp->prev_func_start = prev_func_start; | |
369 | tp->prev_func_name = prev_func_name; | |
6c0d3f6a | 370 | tp->trap_expected = trap_expected; |
c906108c | 371 | tp->step_resume_breakpoint = step_resume_breakpoint; |
6c0d3f6a | 372 | tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint; |
c906108c SS |
373 | tp->step_range_start = step_range_start; |
374 | tp->step_range_end = step_range_end; | |
375 | tp->step_frame_address = step_frame_address; | |
c906108c | 376 | tp->handling_longjmp = handling_longjmp; |
c906108c SS |
377 | tp->another_trap = another_trap; |
378 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; | |
379 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
380 | tp->stepping_through_sigtramp = stepping_through_sigtramp; | |
6c0d3f6a MS |
381 | tp->current_line = current_line; |
382 | tp->current_symtab = current_symtab; | |
383 | tp->step_sp = step_sp; | |
c906108c SS |
384 | } |
385 | ||
386 | /* Return true if TP is an active thread. */ | |
387 | static int | |
fba45db2 | 388 | thread_alive (struct thread_info *tp) |
c906108c | 389 | { |
39f77062 | 390 | if (PIDGET (tp->ptid) == -1) |
c906108c | 391 | return 0; |
39f77062 | 392 | if (!target_thread_alive (tp->ptid)) |
c906108c | 393 | { |
39f77062 | 394 | tp->ptid = pid_to_ptid (-1); /* Mark it as dead */ |
c906108c SS |
395 | return 0; |
396 | } | |
397 | return 1; | |
398 | } | |
399 | ||
400 | static void | |
fba45db2 | 401 | prune_threads (void) |
c906108c | 402 | { |
d4f3574e | 403 | struct thread_info *tp, *next; |
c906108c | 404 | |
c906108c SS |
405 | for (tp = thread_list; tp; tp = next) |
406 | { | |
407 | next = tp->next; | |
408 | if (!thread_alive (tp)) | |
39f77062 | 409 | delete_thread (tp->ptid); |
c906108c SS |
410 | } |
411 | } | |
412 | ||
413 | /* Print information about currently known threads | |
c5aa993b | 414 | |
c906108c SS |
415 | * Note: this has the drawback that it _really_ switches |
416 | * threads, which frees the frame cache. A no-side | |
417 | * effects info-threads command would be nicer. | |
418 | */ | |
419 | ||
420 | static void | |
fba45db2 | 421 | info_threads_command (char *arg, int from_tty) |
c906108c SS |
422 | { |
423 | struct thread_info *tp; | |
39f77062 | 424 | ptid_t current_ptid; |
c5aa993b JM |
425 | struct frame_info *cur_frame; |
426 | int saved_frame_level = selected_frame_level; | |
427 | int counter; | |
0d06e24b | 428 | char *extra_info; |
c906108c SS |
429 | |
430 | /* Avoid coredumps which would happen if we tried to access a NULL | |
431 | selected_frame. */ | |
c5aa993b JM |
432 | if (!target_has_stack) |
433 | error ("No stack."); | |
c906108c SS |
434 | |
435 | prune_threads (); | |
b83266a0 | 436 | target_find_new_threads (); |
39f77062 | 437 | current_ptid = inferior_ptid; |
c906108c SS |
438 | for (tp = thread_list; tp; tp = tp->next) |
439 | { | |
39f77062 | 440 | if (ptid_equal (tp->ptid, current_ptid)) |
c906108c SS |
441 | printf_filtered ("* "); |
442 | else | |
443 | printf_filtered (" "); | |
444 | ||
445 | #ifdef HPUXHPPA | |
39f77062 | 446 | printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->ptid)); |
c906108c | 447 | #else |
39f77062 | 448 | printf_filtered ("%d %s", tp->num, target_pid_to_str (tp->ptid)); |
c906108c | 449 | #endif |
0d06e24b JM |
450 | |
451 | extra_info = target_extra_thread_info (tp); | |
452 | if (extra_info) | |
453 | printf_filtered (" (%s)", extra_info); | |
454 | puts_filtered (" "); | |
455 | ||
39f77062 | 456 | switch_to_thread (tp->ptid); |
c906108c SS |
457 | if (selected_frame) |
458 | print_only_stack_frame (selected_frame, -1, 0); | |
459 | else | |
460 | printf_filtered ("[No stack.]\n"); | |
461 | } | |
462 | ||
39f77062 | 463 | switch_to_thread (current_ptid); |
c906108c SS |
464 | |
465 | /* Code below copied from "up_silently_base" in "stack.c". | |
466 | * It restores the frame set by the user before the "info threads" | |
467 | * command. We have finished the info-threads display by switching | |
468 | * back to the current thread. That switch has put us at the top | |
469 | * of the stack (leaf frame). | |
470 | */ | |
c5aa993b JM |
471 | counter = saved_frame_level; |
472 | cur_frame = find_relative_frame (selected_frame, &counter); | |
c906108c SS |
473 | if (counter != 0) |
474 | { | |
475 | /* Ooops, can't restore, tell user where we are. */ | |
476 | warning ("Couldn't restore frame in current thread, at frame 0"); | |
477 | print_stack_frame (selected_frame, -1, 0); | |
478 | } | |
479 | else | |
480 | { | |
c5aa993b | 481 | select_frame (cur_frame, saved_frame_level); |
c906108c SS |
482 | } |
483 | ||
484 | /* re-show current frame. */ | |
c5aa993b | 485 | show_stack_frame (cur_frame); |
c906108c SS |
486 | } |
487 | ||
488 | /* Switch from one thread to another. */ | |
489 | ||
490 | static void | |
39f77062 | 491 | switch_to_thread (ptid_t ptid) |
c906108c | 492 | { |
39f77062 | 493 | if (ptid_equal (ptid, inferior_ptid)) |
c906108c SS |
494 | return; |
495 | ||
39f77062 | 496 | inferior_ptid = ptid; |
c906108c SS |
497 | flush_cached_frames (); |
498 | registers_changed (); | |
c5aa993b | 499 | stop_pc = read_pc (); |
c906108c SS |
500 | select_frame (get_current_frame (), 0); |
501 | } | |
502 | ||
503 | static void | |
39f77062 | 504 | restore_current_thread (ptid_t ptid) |
c906108c | 505 | { |
39f77062 | 506 | if (! ptid_equal (ptid, inferior_ptid)) |
c906108c | 507 | { |
39f77062 | 508 | switch_to_thread (ptid); |
c5aa993b | 509 | print_stack_frame (get_current_frame (), 0, -1); |
c906108c SS |
510 | } |
511 | } | |
512 | ||
6ecce94d AC |
513 | struct current_thread_cleanup |
514 | { | |
39f77062 | 515 | ptid_t inferior_ptid; |
6ecce94d AC |
516 | }; |
517 | ||
518 | static void | |
519 | do_restore_current_thread_cleanup (void *arg) | |
520 | { | |
521 | struct current_thread_cleanup *old = arg; | |
39f77062 | 522 | restore_current_thread (old->inferior_ptid); |
b8c9b27d | 523 | xfree (old); |
6ecce94d AC |
524 | } |
525 | ||
526 | static struct cleanup * | |
39f77062 | 527 | make_cleanup_restore_current_thread (ptid_t inferior_ptid) |
6ecce94d AC |
528 | { |
529 | struct current_thread_cleanup *old | |
530 | = xmalloc (sizeof (struct current_thread_cleanup)); | |
39f77062 | 531 | old->inferior_ptid = inferior_ptid; |
6ecce94d AC |
532 | return make_cleanup (do_restore_current_thread_cleanup, old); |
533 | } | |
534 | ||
c906108c SS |
535 | /* Apply a GDB command to a list of threads. List syntax is a whitespace |
536 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
537 | of two numbers seperated by a hyphen. Examples: | |
538 | ||
c5aa993b JM |
539 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
540 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
541 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
542 | */ | |
c906108c SS |
543 | |
544 | static void | |
fba45db2 | 545 | thread_apply_all_command (char *cmd, int from_tty) |
c906108c SS |
546 | { |
547 | struct thread_info *tp; | |
548 | struct cleanup *old_chain; | |
e35ce267 CF |
549 | struct cleanup *saved_cmd_cleanup_chain; |
550 | char *saved_cmd; | |
c906108c SS |
551 | |
552 | if (cmd == NULL || *cmd == '\000') | |
553 | error ("Please specify a command following the thread ID list"); | |
554 | ||
39f77062 | 555 | old_chain = make_cleanup_restore_current_thread (inferior_ptid); |
c906108c | 556 | |
e9d196c5 MS |
557 | /* It is safe to update the thread list now, before |
558 | traversing it for "thread apply all". MVS */ | |
559 | target_find_new_threads (); | |
560 | ||
e35ce267 CF |
561 | /* Save a copy of the command in case it is clobbered by |
562 | execute_command */ | |
5b616ba1 | 563 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 564 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
565 | for (tp = thread_list; tp; tp = tp->next) |
566 | if (thread_alive (tp)) | |
567 | { | |
39f77062 | 568 | switch_to_thread (tp->ptid); |
c906108c SS |
569 | #ifdef HPUXHPPA |
570 | printf_filtered ("\nThread %d (%s):\n", | |
571 | tp->num, | |
39f77062 | 572 | target_tid_to_str (inferior_ptid)); |
c906108c SS |
573 | #else |
574 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
39f77062 | 575 | target_pid_to_str (inferior_ptid)); |
c906108c SS |
576 | #endif |
577 | execute_command (cmd, from_tty); | |
e35ce267 | 578 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c | 579 | } |
6ecce94d | 580 | |
e35ce267 | 581 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 582 | do_cleanups (old_chain); |
c906108c SS |
583 | } |
584 | ||
585 | static void | |
fba45db2 | 586 | thread_apply_command (char *tidlist, int from_tty) |
c906108c SS |
587 | { |
588 | char *cmd; | |
589 | char *p; | |
590 | struct cleanup *old_chain; | |
e35ce267 CF |
591 | struct cleanup *saved_cmd_cleanup_chain; |
592 | char *saved_cmd; | |
c906108c SS |
593 | |
594 | if (tidlist == NULL || *tidlist == '\000') | |
595 | error ("Please specify a thread ID list"); | |
596 | ||
c5aa993b | 597 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
598 | |
599 | if (*cmd == '\000') | |
600 | error ("Please specify a command following the thread ID list"); | |
601 | ||
39f77062 | 602 | old_chain = make_cleanup_restore_current_thread (inferior_ptid); |
c906108c | 603 | |
e35ce267 CF |
604 | /* Save a copy of the command in case it is clobbered by |
605 | execute_command */ | |
5b616ba1 | 606 | saved_cmd = xstrdup (cmd); |
b8c9b27d | 607 | saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd); |
c906108c SS |
608 | while (tidlist < cmd) |
609 | { | |
610 | struct thread_info *tp; | |
611 | int start, end; | |
612 | ||
613 | start = strtol (tidlist, &p, 10); | |
614 | if (p == tidlist) | |
615 | error ("Error parsing %s", tidlist); | |
616 | tidlist = p; | |
617 | ||
618 | while (*tidlist == ' ' || *tidlist == '\t') | |
619 | tidlist++; | |
620 | ||
621 | if (*tidlist == '-') /* Got a range of IDs? */ | |
622 | { | |
c5aa993b | 623 | tidlist++; /* Skip the - */ |
c906108c SS |
624 | end = strtol (tidlist, &p, 10); |
625 | if (p == tidlist) | |
626 | error ("Error parsing %s", tidlist); | |
627 | tidlist = p; | |
628 | ||
629 | while (*tidlist == ' ' || *tidlist == '\t') | |
630 | tidlist++; | |
631 | } | |
632 | else | |
633 | end = start; | |
634 | ||
635 | for (; start <= end; start++) | |
636 | { | |
637 | tp = find_thread_id (start); | |
638 | ||
639 | if (!tp) | |
640 | warning ("Unknown thread %d.", start); | |
641 | else if (!thread_alive (tp)) | |
642 | warning ("Thread %d has terminated.", start); | |
643 | else | |
644 | { | |
39f77062 | 645 | switch_to_thread (tp->ptid); |
c906108c SS |
646 | #ifdef HPUXHPPA |
647 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
39f77062 | 648 | target_tid_to_str (inferior_ptid)); |
c906108c SS |
649 | #else |
650 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
39f77062 | 651 | target_pid_to_str (inferior_ptid)); |
c906108c SS |
652 | #endif |
653 | execute_command (cmd, from_tty); | |
e35ce267 | 654 | strcpy (cmd, saved_cmd); /* Restore exact command used previously */ |
c906108c SS |
655 | } |
656 | } | |
657 | } | |
6ecce94d | 658 | |
e35ce267 | 659 | do_cleanups (saved_cmd_cleanup_chain); |
6ecce94d | 660 | do_cleanups (old_chain); |
c906108c SS |
661 | } |
662 | ||
663 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
664 | if prefix of arg is `apply'. */ | |
665 | ||
666 | static void | |
fba45db2 | 667 | thread_command (char *tidstr, int from_tty) |
c906108c | 668 | { |
c906108c SS |
669 | if (!tidstr) |
670 | { | |
671 | /* Don't generate an error, just say which thread is current. */ | |
672 | if (target_has_stack) | |
673 | printf_filtered ("[Current thread is %d (%s)]\n", | |
39f77062 | 674 | pid_to_thread_id (inferior_ptid), |
c906108c | 675 | #if defined(HPUXHPPA) |
39f77062 | 676 | target_tid_to_str (inferior_ptid) |
c906108c | 677 | #else |
39f77062 | 678 | target_pid_to_str (inferior_ptid) |
c906108c | 679 | #endif |
c5aa993b | 680 | ); |
c906108c SS |
681 | else |
682 | error ("No stack."); | |
683 | return; | |
684 | } | |
c5394b80 JM |
685 | |
686 | gdb_thread_select (tidstr); | |
687 | } | |
688 | ||
689 | static int | |
690 | do_captured_thread_select (void *tidstr) | |
691 | { | |
692 | int num; | |
693 | struct thread_info *tp; | |
694 | ||
81490ea1 | 695 | num = value_as_long (parse_and_eval (tidstr)); |
c906108c SS |
696 | |
697 | tp = find_thread_id (num); | |
698 | ||
8b93c638 JM |
699 | #ifdef UI_OUT |
700 | if (!tp) | |
701 | error ("Thread ID %d not known.", num); | |
702 | #else | |
c906108c SS |
703 | if (!tp) |
704 | error ("Thread ID %d not known. Use the \"info threads\" command to\n\ | |
705 | see the IDs of currently known threads.", num); | |
8b93c638 | 706 | #endif |
c906108c SS |
707 | |
708 | if (!thread_alive (tp)) | |
709 | error ("Thread ID %d has terminated.\n", num); | |
710 | ||
39f77062 | 711 | switch_to_thread (tp->ptid); |
c906108c | 712 | |
8b93c638 JM |
713 | #ifdef UI_OUT |
714 | ui_out_text (uiout, "[Switching to thread "); | |
39f77062 | 715 | ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid)); |
8b93c638 JM |
716 | ui_out_text (uiout, " ("); |
717 | #if defined(HPUXHPPA) | |
39f77062 | 718 | ui_out_text (uiout, target_tid_to_str (inferior_ptid)); |
8b93c638 | 719 | #else |
39f77062 | 720 | ui_out_text (uiout, target_pid_to_str (inferior_ptid)); |
8b93c638 JM |
721 | #endif |
722 | ui_out_text (uiout, ")]"); | |
723 | #else /* UI_OUT */ | |
c906108c | 724 | printf_filtered ("[Switching to thread %d (%s)]\n", |
39f77062 | 725 | pid_to_thread_id (inferior_ptid), |
c906108c | 726 | #if defined(HPUXHPPA) |
39f77062 | 727 | target_tid_to_str (inferior_ptid) |
c906108c | 728 | #else |
39f77062 | 729 | target_pid_to_str (inferior_ptid) |
c906108c | 730 | #endif |
c5aa993b | 731 | ); |
8b93c638 | 732 | #endif /* UI_OUT */ |
c5394b80 | 733 | |
c906108c | 734 | print_stack_frame (selected_frame, selected_frame_level, 1); |
c5394b80 JM |
735 | return GDB_RC_OK; |
736 | } | |
737 | ||
738 | enum gdb_rc | |
739 | gdb_thread_select (char *tidstr) | |
740 | { | |
741 | return catch_errors (do_captured_thread_select, tidstr, | |
742 | NULL, RETURN_MASK_ALL); | |
c906108c SS |
743 | } |
744 | ||
745 | /* Commands with a prefix of `thread'. */ | |
746 | struct cmd_list_element *thread_cmd_list = NULL; | |
747 | ||
748 | void | |
fba45db2 | 749 | _initialize_thread (void) |
c906108c SS |
750 | { |
751 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c SS |
752 | |
753 | add_info ("threads", info_threads_command, | |
754 | "IDs of currently known threads."); | |
755 | ||
756 | add_prefix_cmd ("thread", class_run, thread_command, | |
757 | "Use this command to switch between threads.\n\ | |
758 | The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1, | |
759 | &cmdlist); | |
760 | ||
761 | add_prefix_cmd ("apply", class_run, thread_apply_command, | |
762 | "Apply a command to a list of threads.", | |
763 | &thread_apply_list, "apply ", 1, &thread_cmd_list); | |
764 | ||
765 | add_cmd ("all", class_run, thread_apply_all_command, | |
766 | "Apply a command to all threads.", | |
767 | &thread_apply_list); | |
768 | ||
769 | if (!xdb_commands) | |
770 | add_com_alias ("t", "thread", class_run, 1); | |
771 | } |