Commit | Line | Data |
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c906108c SS |
1 | /* Multi-process/thread control for GDB, the GNU debugger. |
2 | Copyright 1986, 1987, 1988, 1993, 1998 | |
3 | ||
4 | Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. | |
5 | Free Software Foundation, Inc. | |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
27 | #include "inferior.h" | |
28 | #include "environ.h" | |
29 | #include "value.h" | |
30 | #include "target.h" | |
31 | #include "gdbthread.h" | |
32 | #include "command.h" | |
33 | #include "gdbcmd.h" | |
34 | ||
35 | #include <ctype.h> | |
36 | #include <sys/types.h> | |
37 | #include <signal.h> | |
38 | ||
c5aa993b | 39 | /*#include "lynxos-core.h" */ |
c906108c SS |
40 | |
41 | struct thread_info | |
c5aa993b JM |
42 | { |
43 | struct thread_info *next; | |
44 | int pid; /* Actual process id */ | |
45 | int num; /* Convenient handle */ | |
46 | CORE_ADDR prev_pc; /* State from wait_for_inferior */ | |
47 | CORE_ADDR prev_func_start; | |
48 | char *prev_func_name; | |
49 | struct breakpoint *step_resume_breakpoint; | |
50 | struct breakpoint *through_sigtramp_breakpoint; | |
51 | CORE_ADDR step_range_start; | |
52 | CORE_ADDR step_range_end; | |
53 | CORE_ADDR step_frame_address; | |
54 | int trap_expected; | |
55 | int handling_longjmp; | |
56 | int another_trap; | |
57 | ||
58 | /* This is set TRUE when a catchpoint of a shared library event | |
59 | triggers. Since we don't wish to leave the inferior in the | |
60 | solib hook when we report the event, we step the inferior | |
61 | back to user code before stopping and reporting the event. | |
c906108c | 62 | */ |
c5aa993b | 63 | int stepping_through_solib_after_catch; |
c906108c | 64 | |
c5aa993b JM |
65 | /* When stepping_through_solib_after_catch is TRUE, this is a |
66 | list of the catchpoints that should be reported as triggering | |
67 | when we finally do stop stepping. | |
c906108c | 68 | */ |
c5aa993b | 69 | bpstat stepping_through_solib_catchpoints; |
c906108c | 70 | |
c5aa993b JM |
71 | /* This is set to TRUE when this thread is in a signal handler |
72 | trampoline and we're single-stepping through it */ | |
73 | int stepping_through_sigtramp; | |
c906108c | 74 | |
c5aa993b | 75 | }; |
c906108c SS |
76 | |
77 | /* Prototypes for exported functions. */ | |
78 | ||
79 | void _initialize_thread PARAMS ((void)); | |
80 | ||
81 | /* Prototypes for local functions. */ | |
82 | ||
c906108c SS |
83 | static struct thread_info *thread_list = NULL; |
84 | static int highest_thread_num; | |
85 | ||
c5aa993b | 86 | static struct thread_info *find_thread_id PARAMS ((int num)); |
c906108c | 87 | |
c5aa993b | 88 | static void thread_command PARAMS ((char *tidstr, int from_tty)); |
c906108c | 89 | static void thread_apply_all_command PARAMS ((char *, int)); |
c5aa993b | 90 | static int thread_alive PARAMS ((struct thread_info *)); |
c906108c SS |
91 | static void info_threads_command PARAMS ((char *, int)); |
92 | static void thread_apply_command PARAMS ((char *, int)); | |
93 | static void restore_current_thread PARAMS ((int)); | |
94 | static void switch_to_thread PARAMS ((int pid)); | |
95 | static void prune_threads PARAMS ((void)); | |
c906108c SS |
96 | |
97 | void | |
98 | init_thread_list () | |
99 | { | |
100 | struct thread_info *tp, *tpnext; | |
101 | ||
102 | if (!thread_list) | |
103 | return; | |
104 | ||
105 | for (tp = thread_list; tp; tp = tpnext) | |
106 | { | |
107 | tpnext = tp->next; | |
108 | free (tp); | |
109 | } | |
110 | ||
111 | thread_list = NULL; | |
112 | highest_thread_num = 0; | |
113 | } | |
114 | ||
115 | void | |
116 | add_thread (pid) | |
117 | int pid; | |
118 | { | |
119 | struct thread_info *tp; | |
120 | ||
121 | tp = (struct thread_info *) xmalloc (sizeof (struct thread_info)); | |
122 | ||
123 | tp->pid = pid; | |
124 | tp->num = ++highest_thread_num; | |
125 | tp->prev_pc = 0; | |
126 | tp->prev_func_start = 0; | |
127 | tp->prev_func_name = NULL; | |
128 | tp->step_range_start = 0; | |
129 | tp->step_range_end = 0; | |
c5aa993b | 130 | tp->step_frame_address = 0; |
c906108c SS |
131 | tp->step_resume_breakpoint = 0; |
132 | tp->through_sigtramp_breakpoint = 0; | |
133 | tp->handling_longjmp = 0; | |
134 | tp->trap_expected = 0; | |
135 | tp->another_trap = 0; | |
136 | tp->stepping_through_solib_after_catch = 0; | |
137 | tp->stepping_through_solib_catchpoints = NULL; | |
138 | tp->stepping_through_sigtramp = 0; | |
139 | tp->next = thread_list; | |
140 | thread_list = tp; | |
141 | } | |
142 | ||
143 | void | |
144 | delete_thread (pid) | |
145 | int pid; | |
146 | { | |
147 | struct thread_info *tp, *tpprev; | |
148 | ||
149 | tpprev = NULL; | |
150 | ||
151 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
152 | if (tp->pid == pid) | |
153 | break; | |
154 | ||
155 | if (!tp) | |
156 | return; | |
157 | ||
158 | if (tpprev) | |
159 | tpprev->next = tp->next; | |
160 | else | |
161 | thread_list = tp->next; | |
162 | ||
53a5351d JM |
163 | /* NOTE: this will take care of any left-over step_resume breakpoints, |
164 | but not any user-specified thread-specific breakpoints. */ | |
165 | if (tp->step_resume_breakpoint) | |
166 | delete_breakpoint (tp->step_resume_breakpoint); | |
167 | ||
c906108c SS |
168 | free (tp); |
169 | ||
170 | return; | |
171 | } | |
172 | ||
173 | static struct thread_info * | |
174 | find_thread_id (num) | |
c5aa993b | 175 | int num; |
c906108c SS |
176 | { |
177 | struct thread_info *tp; | |
178 | ||
179 | for (tp = thread_list; tp; tp = tp->next) | |
180 | if (tp->num == num) | |
181 | return tp; | |
182 | ||
183 | return NULL; | |
184 | } | |
185 | ||
186 | int | |
187 | valid_thread_id (num) | |
c5aa993b | 188 | int num; |
c906108c SS |
189 | { |
190 | struct thread_info *tp; | |
191 | ||
192 | for (tp = thread_list; tp; tp = tp->next) | |
193 | if (tp->num == num) | |
194 | return 1; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | int | |
200 | pid_to_thread_id (pid) | |
c5aa993b | 201 | int pid; |
c906108c SS |
202 | { |
203 | struct thread_info *tp; | |
204 | ||
205 | for (tp = thread_list; tp; tp = tp->next) | |
206 | if (tp->pid == pid) | |
207 | return tp->num; | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | int | |
213 | thread_id_to_pid (num) | |
c5aa993b | 214 | int num; |
c906108c SS |
215 | { |
216 | struct thread_info *thread = find_thread_id (num); | |
217 | if (thread) | |
218 | return thread->pid; | |
219 | else | |
220 | return -1; | |
221 | } | |
222 | ||
223 | int | |
224 | in_thread_list (pid) | |
c5aa993b | 225 | int pid; |
c906108c SS |
226 | { |
227 | struct thread_info *tp; | |
228 | ||
229 | for (tp = thread_list; tp; tp = tp->next) | |
230 | if (tp->pid == pid) | |
231 | return 1; | |
232 | ||
233 | return 0; /* Never heard of 'im */ | |
234 | } | |
235 | ||
236 | /* Load infrun state for the thread PID. */ | |
237 | ||
c5aa993b JM |
238 | void |
239 | load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, | |
240 | trap_expected, step_resume_breakpoint, | |
241 | through_sigtramp_breakpoint, step_range_start, | |
242 | step_range_end, step_frame_address, | |
243 | handling_longjmp, another_trap, | |
244 | stepping_through_solib_after_catch, | |
245 | stepping_through_solib_catchpoints, | |
246 | stepping_through_sigtramp) | |
c906108c SS |
247 | int pid; |
248 | CORE_ADDR *prev_pc; | |
249 | CORE_ADDR *prev_func_start; | |
250 | char **prev_func_name; | |
251 | int *trap_expected; | |
252 | struct breakpoint **step_resume_breakpoint; | |
253 | struct breakpoint **through_sigtramp_breakpoint; | |
254 | CORE_ADDR *step_range_start; | |
255 | CORE_ADDR *step_range_end; | |
256 | CORE_ADDR *step_frame_address; | |
257 | int *handling_longjmp; | |
258 | int *another_trap; | |
c5aa993b JM |
259 | int *stepping_through_solib_after_catch; |
260 | bpstat *stepping_through_solib_catchpoints; | |
261 | int *stepping_through_sigtramp; | |
c906108c SS |
262 | { |
263 | struct thread_info *tp; | |
264 | ||
265 | /* If we can't find the thread, then we're debugging a single threaded | |
266 | process. No need to do anything in that case. */ | |
267 | tp = find_thread_id (pid_to_thread_id (pid)); | |
268 | if (tp == NULL) | |
269 | return; | |
270 | ||
271 | *prev_pc = tp->prev_pc; | |
272 | *prev_func_start = tp->prev_func_start; | |
273 | *prev_func_name = tp->prev_func_name; | |
274 | *step_resume_breakpoint = tp->step_resume_breakpoint; | |
275 | *step_range_start = tp->step_range_start; | |
276 | *step_range_end = tp->step_range_end; | |
277 | *step_frame_address = tp->step_frame_address; | |
278 | *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint; | |
279 | *handling_longjmp = tp->handling_longjmp; | |
280 | *trap_expected = tp->trap_expected; | |
281 | *another_trap = tp->another_trap; | |
282 | *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch; | |
283 | *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints; | |
284 | *stepping_through_sigtramp = tp->stepping_through_sigtramp; | |
285 | } | |
286 | ||
287 | /* Save infrun state for the thread PID. */ | |
288 | ||
c5aa993b JM |
289 | void |
290 | save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, | |
291 | trap_expected, step_resume_breakpoint, | |
292 | through_sigtramp_breakpoint, step_range_start, | |
293 | step_range_end, step_frame_address, | |
294 | handling_longjmp, another_trap, | |
295 | stepping_through_solib_after_catch, | |
296 | stepping_through_solib_catchpoints, | |
297 | stepping_through_sigtramp) | |
c906108c SS |
298 | int pid; |
299 | CORE_ADDR prev_pc; | |
300 | CORE_ADDR prev_func_start; | |
301 | char *prev_func_name; | |
302 | int trap_expected; | |
303 | struct breakpoint *step_resume_breakpoint; | |
304 | struct breakpoint *through_sigtramp_breakpoint; | |
305 | CORE_ADDR step_range_start; | |
306 | CORE_ADDR step_range_end; | |
307 | CORE_ADDR step_frame_address; | |
308 | int handling_longjmp; | |
309 | int another_trap; | |
c5aa993b JM |
310 | int stepping_through_solib_after_catch; |
311 | bpstat stepping_through_solib_catchpoints; | |
312 | int stepping_through_sigtramp; | |
c906108c SS |
313 | { |
314 | struct thread_info *tp; | |
315 | ||
316 | /* If we can't find the thread, then we're debugging a single-threaded | |
317 | process. Nothing to do in that case. */ | |
318 | tp = find_thread_id (pid_to_thread_id (pid)); | |
319 | if (tp == NULL) | |
320 | return; | |
321 | ||
322 | tp->prev_pc = prev_pc; | |
323 | tp->prev_func_start = prev_func_start; | |
324 | tp->prev_func_name = prev_func_name; | |
325 | tp->step_resume_breakpoint = step_resume_breakpoint; | |
326 | tp->step_range_start = step_range_start; | |
327 | tp->step_range_end = step_range_end; | |
328 | tp->step_frame_address = step_frame_address; | |
329 | tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint; | |
330 | tp->handling_longjmp = handling_longjmp; | |
331 | tp->trap_expected = trap_expected; | |
332 | tp->another_trap = another_trap; | |
333 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; | |
334 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
335 | tp->stepping_through_sigtramp = stepping_through_sigtramp; | |
336 | } | |
337 | ||
338 | /* Return true if TP is an active thread. */ | |
339 | static int | |
340 | thread_alive (tp) | |
341 | struct thread_info *tp; | |
342 | { | |
343 | if (tp->pid == -1) | |
344 | return 0; | |
c5aa993b | 345 | if (!target_thread_alive (tp->pid)) |
c906108c | 346 | { |
c5aa993b | 347 | tp->pid = -1; /* Mark it as dead */ |
c906108c SS |
348 | return 0; |
349 | } | |
350 | return 1; | |
351 | } | |
352 | ||
353 | static void | |
354 | prune_threads () | |
355 | { | |
d4f3574e | 356 | struct thread_info *tp, *next; |
c906108c | 357 | |
c906108c SS |
358 | for (tp = thread_list; tp; tp = next) |
359 | { | |
360 | next = tp->next; | |
361 | if (!thread_alive (tp)) | |
53a5351d | 362 | delete_thread (tp->pid); |
c906108c SS |
363 | } |
364 | } | |
365 | ||
366 | /* Print information about currently known threads | |
c5aa993b | 367 | |
c906108c SS |
368 | * Note: this has the drawback that it _really_ switches |
369 | * threads, which frees the frame cache. A no-side | |
370 | * effects info-threads command would be nicer. | |
371 | */ | |
372 | ||
373 | static void | |
374 | info_threads_command (arg, from_tty) | |
375 | char *arg; | |
376 | int from_tty; | |
377 | { | |
378 | struct thread_info *tp; | |
c5aa993b JM |
379 | int current_pid; |
380 | struct frame_info *cur_frame; | |
381 | int saved_frame_level = selected_frame_level; | |
382 | int counter; | |
c906108c SS |
383 | |
384 | /* Avoid coredumps which would happen if we tried to access a NULL | |
385 | selected_frame. */ | |
c5aa993b JM |
386 | if (!target_has_stack) |
387 | error ("No stack."); | |
c906108c SS |
388 | |
389 | prune_threads (); | |
b83266a0 | 390 | target_find_new_threads (); |
c906108c SS |
391 | current_pid = inferior_pid; |
392 | for (tp = thread_list; tp; tp = tp->next) | |
393 | { | |
394 | if (tp->pid == current_pid) | |
395 | printf_filtered ("* "); | |
396 | else | |
397 | printf_filtered (" "); | |
398 | ||
399 | #ifdef HPUXHPPA | |
400 | printf_filtered ("%d %s ", tp->num, target_tid_to_str (tp->pid)); | |
401 | #else | |
402 | printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid)); | |
403 | #endif | |
404 | switch_to_thread (tp->pid); | |
405 | if (selected_frame) | |
406 | print_only_stack_frame (selected_frame, -1, 0); | |
407 | else | |
408 | printf_filtered ("[No stack.]\n"); | |
409 | } | |
410 | ||
411 | switch_to_thread (current_pid); | |
412 | ||
413 | /* Code below copied from "up_silently_base" in "stack.c". | |
414 | * It restores the frame set by the user before the "info threads" | |
415 | * command. We have finished the info-threads display by switching | |
416 | * back to the current thread. That switch has put us at the top | |
417 | * of the stack (leaf frame). | |
418 | */ | |
c5aa993b JM |
419 | counter = saved_frame_level; |
420 | cur_frame = find_relative_frame (selected_frame, &counter); | |
c906108c SS |
421 | if (counter != 0) |
422 | { | |
423 | /* Ooops, can't restore, tell user where we are. */ | |
424 | warning ("Couldn't restore frame in current thread, at frame 0"); | |
425 | print_stack_frame (selected_frame, -1, 0); | |
426 | } | |
427 | else | |
428 | { | |
c5aa993b | 429 | select_frame (cur_frame, saved_frame_level); |
c906108c SS |
430 | } |
431 | ||
432 | /* re-show current frame. */ | |
c5aa993b | 433 | show_stack_frame (cur_frame); |
c906108c SS |
434 | } |
435 | ||
436 | /* Switch from one thread to another. */ | |
437 | ||
438 | static void | |
439 | switch_to_thread (pid) | |
440 | int pid; | |
441 | { | |
442 | if (pid == inferior_pid) | |
443 | return; | |
444 | ||
445 | inferior_pid = pid; | |
446 | flush_cached_frames (); | |
447 | registers_changed (); | |
c5aa993b | 448 | stop_pc = read_pc (); |
c906108c SS |
449 | select_frame (get_current_frame (), 0); |
450 | } | |
451 | ||
452 | static void | |
453 | restore_current_thread (pid) | |
454 | int pid; | |
455 | { | |
c5aa993b | 456 | if (pid != inferior_pid) |
c906108c SS |
457 | { |
458 | switch_to_thread (pid); | |
c5aa993b | 459 | print_stack_frame (get_current_frame (), 0, -1); |
c906108c SS |
460 | } |
461 | } | |
462 | ||
463 | /* Apply a GDB command to a list of threads. List syntax is a whitespace | |
464 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
465 | of two numbers seperated by a hyphen. Examples: | |
466 | ||
c5aa993b JM |
467 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 |
468 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
469 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
470 | */ | |
c906108c SS |
471 | |
472 | static void | |
473 | thread_apply_all_command (cmd, from_tty) | |
474 | char *cmd; | |
475 | int from_tty; | |
476 | { | |
477 | struct thread_info *tp; | |
478 | struct cleanup *old_chain; | |
479 | ||
480 | if (cmd == NULL || *cmd == '\000') | |
481 | error ("Please specify a command following the thread ID list"); | |
482 | ||
c5aa993b | 483 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, |
c906108c SS |
484 | (void *) inferior_pid); |
485 | ||
486 | for (tp = thread_list; tp; tp = tp->next) | |
487 | if (thread_alive (tp)) | |
488 | { | |
489 | switch_to_thread (tp->pid); | |
490 | #ifdef HPUXHPPA | |
491 | printf_filtered ("\nThread %d (%s):\n", | |
492 | tp->num, | |
493 | target_tid_to_str (inferior_pid)); | |
494 | #else | |
495 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
496 | target_pid_to_str (inferior_pid)); | |
497 | #endif | |
498 | execute_command (cmd, from_tty); | |
499 | } | |
500 | } | |
501 | ||
502 | static void | |
503 | thread_apply_command (tidlist, from_tty) | |
504 | char *tidlist; | |
505 | int from_tty; | |
506 | { | |
507 | char *cmd; | |
508 | char *p; | |
509 | struct cleanup *old_chain; | |
510 | ||
511 | if (tidlist == NULL || *tidlist == '\000') | |
512 | error ("Please specify a thread ID list"); | |
513 | ||
c5aa993b | 514 | for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++); |
c906108c SS |
515 | |
516 | if (*cmd == '\000') | |
517 | error ("Please specify a command following the thread ID list"); | |
518 | ||
c5aa993b | 519 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, |
c906108c SS |
520 | (void *) inferior_pid); |
521 | ||
522 | while (tidlist < cmd) | |
523 | { | |
524 | struct thread_info *tp; | |
525 | int start, end; | |
526 | ||
527 | start = strtol (tidlist, &p, 10); | |
528 | if (p == tidlist) | |
529 | error ("Error parsing %s", tidlist); | |
530 | tidlist = p; | |
531 | ||
532 | while (*tidlist == ' ' || *tidlist == '\t') | |
533 | tidlist++; | |
534 | ||
535 | if (*tidlist == '-') /* Got a range of IDs? */ | |
536 | { | |
c5aa993b | 537 | tidlist++; /* Skip the - */ |
c906108c SS |
538 | end = strtol (tidlist, &p, 10); |
539 | if (p == tidlist) | |
540 | error ("Error parsing %s", tidlist); | |
541 | tidlist = p; | |
542 | ||
543 | while (*tidlist == ' ' || *tidlist == '\t') | |
544 | tidlist++; | |
545 | } | |
546 | else | |
547 | end = start; | |
548 | ||
549 | for (; start <= end; start++) | |
550 | { | |
551 | tp = find_thread_id (start); | |
552 | ||
553 | if (!tp) | |
554 | warning ("Unknown thread %d.", start); | |
555 | else if (!thread_alive (tp)) | |
556 | warning ("Thread %d has terminated.", start); | |
557 | else | |
558 | { | |
559 | switch_to_thread (tp->pid); | |
560 | #ifdef HPUXHPPA | |
561 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
562 | target_tid_to_str (inferior_pid)); | |
563 | #else | |
564 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
565 | target_pid_to_str (inferior_pid)); | |
566 | #endif | |
567 | execute_command (cmd, from_tty); | |
568 | } | |
569 | } | |
570 | } | |
571 | } | |
572 | ||
573 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
574 | if prefix of arg is `apply'. */ | |
575 | ||
576 | static void | |
577 | thread_command (tidstr, from_tty) | |
578 | char *tidstr; | |
579 | int from_tty; | |
580 | { | |
581 | int num; | |
582 | struct thread_info *tp; | |
583 | ||
584 | if (!tidstr) | |
585 | { | |
586 | /* Don't generate an error, just say which thread is current. */ | |
587 | if (target_has_stack) | |
588 | printf_filtered ("[Current thread is %d (%s)]\n", | |
c5aa993b | 589 | pid_to_thread_id (inferior_pid), |
c906108c | 590 | #if defined(HPUXHPPA) |
c5aa993b | 591 | target_tid_to_str (inferior_pid) |
c906108c | 592 | #else |
c5aa993b | 593 | target_pid_to_str (inferior_pid) |
c906108c | 594 | #endif |
c5aa993b | 595 | ); |
c906108c SS |
596 | else |
597 | error ("No stack."); | |
598 | return; | |
599 | } | |
600 | num = atoi (tidstr); | |
601 | ||
602 | tp = find_thread_id (num); | |
603 | ||
604 | if (!tp) | |
605 | error ("Thread ID %d not known. Use the \"info threads\" command to\n\ | |
606 | see the IDs of currently known threads.", num); | |
607 | ||
608 | if (!thread_alive (tp)) | |
609 | error ("Thread ID %d has terminated.\n", num); | |
610 | ||
611 | switch_to_thread (tp->pid); | |
612 | ||
613 | if (context_hook) | |
614 | context_hook (num); | |
615 | ||
616 | printf_filtered ("[Switching to thread %d (%s)]\n", | |
617 | pid_to_thread_id (inferior_pid), | |
618 | #if defined(HPUXHPPA) | |
619 | target_tid_to_str (inferior_pid) | |
620 | #else | |
621 | target_pid_to_str (inferior_pid) | |
622 | #endif | |
c5aa993b | 623 | ); |
c906108c SS |
624 | print_stack_frame (selected_frame, selected_frame_level, 1); |
625 | } | |
626 | ||
627 | /* Commands with a prefix of `thread'. */ | |
628 | struct cmd_list_element *thread_cmd_list = NULL; | |
629 | ||
630 | void | |
631 | _initialize_thread () | |
632 | { | |
633 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c SS |
634 | |
635 | add_info ("threads", info_threads_command, | |
636 | "IDs of currently known threads."); | |
637 | ||
638 | add_prefix_cmd ("thread", class_run, thread_command, | |
639 | "Use this command to switch between threads.\n\ | |
640 | The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1, | |
641 | &cmdlist); | |
642 | ||
643 | add_prefix_cmd ("apply", class_run, thread_apply_command, | |
644 | "Apply a command to a list of threads.", | |
645 | &thread_apply_list, "apply ", 1, &thread_cmd_list); | |
646 | ||
647 | add_cmd ("all", class_run, thread_apply_all_command, | |
648 | "Apply a command to all threads.", | |
649 | &thread_apply_list); | |
650 | ||
651 | if (!xdb_commands) | |
652 | add_com_alias ("t", "thread", class_run, 1); | |
653 | } |