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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 | ||
7 | This file is part of GDB. | |
8 | ||
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. | |
13 | ||
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. | |
18 | ||
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, Boston, MA 02111-1307, USA. */ | |
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" | |
31 | #include "command.h" | |
32 | #include "gdbcmd.h" | |
33 | ||
34 | #include <ctype.h> | |
35 | #include <sys/types.h> | |
36 | #include <signal.h> | |
37 | ||
38 | /*#include "lynxos-core.h"*/ | |
39 | ||
40 | struct thread_info | |
41 | { | |
42 | struct thread_info *next; | |
43 | int pid; /* Actual process id */ | |
44 | int num; /* Convenient handle */ | |
45 | CORE_ADDR prev_pc; /* State from wait_for_inferior */ | |
46 | CORE_ADDR prev_func_start; | |
47 | char *prev_func_name; | |
48 | struct breakpoint *step_resume_breakpoint; | |
49 | struct breakpoint *through_sigtramp_breakpoint; | |
50 | CORE_ADDR step_range_start; | |
51 | CORE_ADDR step_range_end; | |
52 | CORE_ADDR step_frame_address; | |
53 | int trap_expected; | |
54 | int handling_longjmp; | |
55 | int another_trap; | |
56 | ||
57 | /* This is set TRUE when a catchpoint of a shared library event | |
58 | triggers. Since we don't wish to leave the inferior in the | |
59 | solib hook when we report the event, we step the inferior | |
60 | back to user code before stopping and reporting the event. | |
61 | */ | |
62 | int stepping_through_solib_after_catch; | |
63 | ||
64 | /* When stepping_through_solib_after_catch is TRUE, this is a | |
65 | list of the catchpoints that should be reported as triggering | |
66 | when we finally do stop stepping. | |
67 | */ | |
68 | bpstat stepping_through_solib_catchpoints; | |
69 | ||
70 | /* This is set to TRUE when this thread is in a signal handler | |
71 | trampoline and we're single-stepping through it */ | |
72 | int stepping_through_sigtramp; | |
73 | ||
74 | }; | |
75 | ||
76 | /* Prototypes for exported functions. */ | |
77 | ||
78 | void _initialize_thread PARAMS ((void)); | |
79 | ||
80 | /* Prototypes for local functions. */ | |
81 | ||
82 | #if !defined(FIND_NEW_THREADS) | |
83 | #define FIND_NEW_THREADS target_find_new_threads | |
84 | #endif | |
85 | ||
86 | static struct thread_info *thread_list = NULL; | |
87 | static int highest_thread_num; | |
88 | ||
89 | static struct thread_info * find_thread_id PARAMS ((int num)); | |
90 | ||
91 | static void thread_command PARAMS ((char * tidstr, int from_tty)); | |
92 | static void thread_apply_all_command PARAMS ((char *, int)); | |
93 | static int thread_alive PARAMS ((struct thread_info *)); | |
94 | static void info_threads_command PARAMS ((char *, int)); | |
95 | static void thread_apply_command PARAMS ((char *, int)); | |
96 | static void restore_current_thread PARAMS ((int)); | |
97 | static void switch_to_thread PARAMS ((int pid)); | |
98 | static void prune_threads PARAMS ((void)); | |
99 | ||
100 | /* If the host has threads, the host machine definition may set this | |
101 | macro. But, for remote thread debugging, it gets more complex and | |
102 | setting macros does not bind to the various target dependent | |
103 | methods well. So, we use the vector target_thread_functions */ | |
104 | ||
105 | static struct target_thread_vector *target_thread_functions; | |
106 | ||
7a292a7a SS |
107 | static int target_find_new_threads PARAMS ((void)); |
108 | ||
109 | static int | |
c906108c SS |
110 | target_find_new_threads () |
111 | { | |
112 | int retval = 0; | |
113 | if (target_thread_functions && | |
114 | target_thread_functions->find_new_threads) | |
115 | retval = (*(target_thread_functions->find_new_threads)) (); | |
116 | return retval; /* no support */ | |
117 | } | |
118 | ||
119 | ||
120 | int | |
121 | target_get_thread_info PARAMS ((gdb_threadref * ref, | |
122 | int selection, /* FIXME: Selection */ | |
123 | struct gdb_ext_thread_info * info)); | |
124 | ||
125 | int | |
126 | target_get_thread_info (ref, selection, info) | |
127 | ||
128 | gdb_threadref *ref; | |
129 | int selection; | |
130 | /* FIXME: Selection */ | |
131 | struct gdb_ext_thread_info *info; | |
132 | ||
133 | { | |
134 | int retval = 0; | |
135 | if (target_thread_functions | |
136 | && target_thread_functions->get_thread_info) | |
137 | retval = (*(target_thread_functions->get_thread_info)) (ref, selection, info); | |
138 | return retval; | |
139 | } | |
140 | ||
141 | ||
142 | /* It is possible that these bind and unbinf functions implement a | |
143 | stack the interface allows it, but its not implemented that way | |
144 | */ | |
145 | ||
146 | ||
147 | void | |
148 | bind_target_thread_vector (vec) | |
149 | struct target_thread_vector *vec; | |
150 | { | |
151 | target_thread_functions = vec; | |
152 | } | |
153 | ||
154 | struct target_thread_vector * | |
155 | unbind_target_thread_vector () | |
156 | { | |
157 | struct target_thread_vector *retval; | |
158 | retval = target_thread_functions; | |
159 | target_thread_functions = 0; | |
160 | return retval; | |
161 | } /* unbind_target_thread-vector */ | |
162 | ||
163 | void | |
164 | init_thread_list () | |
165 | { | |
166 | struct thread_info *tp, *tpnext; | |
167 | ||
168 | if (!thread_list) | |
169 | return; | |
170 | ||
171 | for (tp = thread_list; tp; tp = tpnext) | |
172 | { | |
173 | tpnext = tp->next; | |
174 | free (tp); | |
175 | } | |
176 | ||
177 | thread_list = NULL; | |
178 | highest_thread_num = 0; | |
179 | } | |
180 | ||
181 | void | |
182 | add_thread (pid) | |
183 | int pid; | |
184 | { | |
185 | struct thread_info *tp; | |
186 | ||
187 | tp = (struct thread_info *) xmalloc (sizeof (struct thread_info)); | |
188 | ||
189 | tp->pid = pid; | |
190 | tp->num = ++highest_thread_num; | |
191 | tp->prev_pc = 0; | |
192 | tp->prev_func_start = 0; | |
193 | tp->prev_func_name = NULL; | |
194 | tp->step_range_start = 0; | |
195 | tp->step_range_end = 0; | |
196 | tp->step_frame_address =0; | |
197 | tp->step_resume_breakpoint = 0; | |
198 | tp->through_sigtramp_breakpoint = 0; | |
199 | tp->handling_longjmp = 0; | |
200 | tp->trap_expected = 0; | |
201 | tp->another_trap = 0; | |
202 | tp->stepping_through_solib_after_catch = 0; | |
203 | tp->stepping_through_solib_catchpoints = NULL; | |
204 | tp->stepping_through_sigtramp = 0; | |
205 | tp->next = thread_list; | |
206 | thread_list = tp; | |
207 | } | |
208 | ||
209 | void | |
210 | delete_thread (pid) | |
211 | int pid; | |
212 | { | |
213 | struct thread_info *tp, *tpprev; | |
214 | ||
215 | tpprev = NULL; | |
216 | ||
217 | for (tp = thread_list; tp; tpprev = tp, tp = tp->next) | |
218 | if (tp->pid == pid) | |
219 | break; | |
220 | ||
221 | if (!tp) | |
222 | return; | |
223 | ||
224 | if (tpprev) | |
225 | tpprev->next = tp->next; | |
226 | else | |
227 | thread_list = tp->next; | |
228 | ||
229 | free (tp); | |
230 | ||
231 | return; | |
232 | } | |
233 | ||
234 | static struct thread_info * | |
235 | find_thread_id (num) | |
236 | int num; | |
237 | { | |
238 | struct thread_info *tp; | |
239 | ||
240 | for (tp = thread_list; tp; tp = tp->next) | |
241 | if (tp->num == num) | |
242 | return tp; | |
243 | ||
244 | return NULL; | |
245 | } | |
246 | ||
247 | int | |
248 | valid_thread_id (num) | |
249 | int num; | |
250 | { | |
251 | struct thread_info *tp; | |
252 | ||
253 | for (tp = thread_list; tp; tp = tp->next) | |
254 | if (tp->num == num) | |
255 | return 1; | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | int | |
261 | pid_to_thread_id (pid) | |
262 | int pid; | |
263 | { | |
264 | struct thread_info *tp; | |
265 | ||
266 | for (tp = thread_list; tp; tp = tp->next) | |
267 | if (tp->pid == pid) | |
268 | return tp->num; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | int | |
274 | thread_id_to_pid (num) | |
275 | int num; | |
276 | { | |
277 | struct thread_info *thread = find_thread_id (num); | |
278 | if (thread) | |
279 | return thread->pid; | |
280 | else | |
281 | return -1; | |
282 | } | |
283 | ||
284 | int | |
285 | in_thread_list (pid) | |
286 | int pid; | |
287 | { | |
288 | struct thread_info *tp; | |
289 | ||
290 | for (tp = thread_list; tp; tp = tp->next) | |
291 | if (tp->pid == pid) | |
292 | return 1; | |
293 | ||
294 | return 0; /* Never heard of 'im */ | |
295 | } | |
296 | ||
297 | /* Load infrun state for the thread PID. */ | |
298 | ||
299 | void load_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, | |
300 | trap_expected, step_resume_breakpoint, | |
301 | through_sigtramp_breakpoint, step_range_start, | |
302 | step_range_end, step_frame_address, | |
303 | handling_longjmp, another_trap, | |
304 | stepping_through_solib_after_catch, | |
305 | stepping_through_solib_catchpoints, | |
306 | stepping_through_sigtramp) | |
307 | int pid; | |
308 | CORE_ADDR *prev_pc; | |
309 | CORE_ADDR *prev_func_start; | |
310 | char **prev_func_name; | |
311 | int *trap_expected; | |
312 | struct breakpoint **step_resume_breakpoint; | |
313 | struct breakpoint **through_sigtramp_breakpoint; | |
314 | CORE_ADDR *step_range_start; | |
315 | CORE_ADDR *step_range_end; | |
316 | CORE_ADDR *step_frame_address; | |
317 | int *handling_longjmp; | |
318 | int *another_trap; | |
319 | int * stepping_through_solib_after_catch; | |
320 | bpstat * stepping_through_solib_catchpoints; | |
321 | int * stepping_through_sigtramp; | |
322 | { | |
323 | struct thread_info *tp; | |
324 | ||
325 | /* If we can't find the thread, then we're debugging a single threaded | |
326 | process. No need to do anything in that case. */ | |
327 | tp = find_thread_id (pid_to_thread_id (pid)); | |
328 | if (tp == NULL) | |
329 | return; | |
330 | ||
331 | *prev_pc = tp->prev_pc; | |
332 | *prev_func_start = tp->prev_func_start; | |
333 | *prev_func_name = tp->prev_func_name; | |
334 | *step_resume_breakpoint = tp->step_resume_breakpoint; | |
335 | *step_range_start = tp->step_range_start; | |
336 | *step_range_end = tp->step_range_end; | |
337 | *step_frame_address = tp->step_frame_address; | |
338 | *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint; | |
339 | *handling_longjmp = tp->handling_longjmp; | |
340 | *trap_expected = tp->trap_expected; | |
341 | *another_trap = tp->another_trap; | |
342 | *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch; | |
343 | *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints; | |
344 | *stepping_through_sigtramp = tp->stepping_through_sigtramp; | |
345 | } | |
346 | ||
347 | /* Save infrun state for the thread PID. */ | |
348 | ||
349 | void save_infrun_state (pid, prev_pc, prev_func_start, prev_func_name, | |
350 | trap_expected, step_resume_breakpoint, | |
351 | through_sigtramp_breakpoint, step_range_start, | |
352 | step_range_end, step_frame_address, | |
353 | handling_longjmp, another_trap, | |
354 | stepping_through_solib_after_catch, | |
355 | stepping_through_solib_catchpoints, | |
356 | stepping_through_sigtramp) | |
357 | int pid; | |
358 | CORE_ADDR prev_pc; | |
359 | CORE_ADDR prev_func_start; | |
360 | char *prev_func_name; | |
361 | int trap_expected; | |
362 | struct breakpoint *step_resume_breakpoint; | |
363 | struct breakpoint *through_sigtramp_breakpoint; | |
364 | CORE_ADDR step_range_start; | |
365 | CORE_ADDR step_range_end; | |
366 | CORE_ADDR step_frame_address; | |
367 | int handling_longjmp; | |
368 | int another_trap; | |
369 | int stepping_through_solib_after_catch; | |
370 | bpstat stepping_through_solib_catchpoints; | |
371 | int stepping_through_sigtramp; | |
372 | { | |
373 | struct thread_info *tp; | |
374 | ||
375 | /* If we can't find the thread, then we're debugging a single-threaded | |
376 | process. Nothing to do in that case. */ | |
377 | tp = find_thread_id (pid_to_thread_id (pid)); | |
378 | if (tp == NULL) | |
379 | return; | |
380 | ||
381 | tp->prev_pc = prev_pc; | |
382 | tp->prev_func_start = prev_func_start; | |
383 | tp->prev_func_name = prev_func_name; | |
384 | tp->step_resume_breakpoint = step_resume_breakpoint; | |
385 | tp->step_range_start = step_range_start; | |
386 | tp->step_range_end = step_range_end; | |
387 | tp->step_frame_address = step_frame_address; | |
388 | tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint; | |
389 | tp->handling_longjmp = handling_longjmp; | |
390 | tp->trap_expected = trap_expected; | |
391 | tp->another_trap = another_trap; | |
392 | tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch; | |
393 | tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints; | |
394 | tp->stepping_through_sigtramp = stepping_through_sigtramp; | |
395 | } | |
396 | ||
397 | /* Return true if TP is an active thread. */ | |
398 | static int | |
399 | thread_alive (tp) | |
400 | struct thread_info *tp; | |
401 | { | |
402 | if (tp->pid == -1) | |
403 | return 0; | |
404 | if (! target_thread_alive (tp->pid)) | |
405 | { | |
406 | tp->pid = -1; /* Mark it as dead */ | |
407 | return 0; | |
408 | } | |
409 | return 1; | |
410 | } | |
411 | ||
412 | static void | |
413 | prune_threads () | |
414 | { | |
415 | struct thread_info *tp, *tpprev, *next; | |
416 | ||
417 | tpprev = 0; | |
418 | for (tp = thread_list; tp; tp = next) | |
419 | { | |
420 | next = tp->next; | |
421 | if (!thread_alive (tp)) | |
422 | { | |
423 | if (tpprev) | |
424 | tpprev->next = next; | |
425 | else | |
426 | thread_list = next; | |
427 | free (tp); | |
428 | } | |
429 | else | |
430 | tpprev = tp; | |
431 | } | |
432 | } | |
433 | ||
434 | /* Print information about currently known threads | |
435 | * | |
436 | * Note: this has the drawback that it _really_ switches | |
437 | * threads, which frees the frame cache. A no-side | |
438 | * effects info-threads command would be nicer. | |
439 | */ | |
440 | ||
441 | static void | |
442 | info_threads_command (arg, from_tty) | |
443 | char *arg; | |
444 | int from_tty; | |
445 | { | |
446 | struct thread_info *tp; | |
447 | int current_pid; | |
448 | struct frame_info *cur_frame; | |
449 | int saved_frame_level = selected_frame_level; | |
450 | int counter; | |
451 | ||
452 | /* Avoid coredumps which would happen if we tried to access a NULL | |
453 | selected_frame. */ | |
454 | if (!target_has_stack) error ("No stack."); | |
455 | ||
456 | prune_threads (); | |
457 | #if defined(FIND_NEW_THREADS) | |
458 | FIND_NEW_THREADS (); | |
459 | #endif | |
460 | current_pid = inferior_pid; | |
461 | for (tp = thread_list; tp; tp = tp->next) | |
462 | { | |
463 | if (tp->pid == current_pid) | |
464 | printf_filtered ("* "); | |
465 | else | |
466 | printf_filtered (" "); | |
467 | ||
468 | #ifdef HPUXHPPA | |
469 | printf_filtered ("%d %s ", tp->num, target_tid_to_str (tp->pid)); | |
470 | #else | |
471 | printf_filtered ("%d %s ", tp->num, target_pid_to_str (tp->pid)); | |
472 | #endif | |
473 | switch_to_thread (tp->pid); | |
474 | if (selected_frame) | |
475 | print_only_stack_frame (selected_frame, -1, 0); | |
476 | else | |
477 | printf_filtered ("[No stack.]\n"); | |
478 | } | |
479 | ||
480 | switch_to_thread (current_pid); | |
481 | ||
482 | /* Code below copied from "up_silently_base" in "stack.c". | |
483 | * It restores the frame set by the user before the "info threads" | |
484 | * command. We have finished the info-threads display by switching | |
485 | * back to the current thread. That switch has put us at the top | |
486 | * of the stack (leaf frame). | |
487 | */ | |
488 | counter = saved_frame_level; | |
489 | cur_frame = find_relative_frame(selected_frame, &counter); | |
490 | if (counter != 0) | |
491 | { | |
492 | /* Ooops, can't restore, tell user where we are. */ | |
493 | warning ("Couldn't restore frame in current thread, at frame 0"); | |
494 | print_stack_frame (selected_frame, -1, 0); | |
495 | } | |
496 | else | |
497 | { | |
498 | select_frame(cur_frame, saved_frame_level); | |
499 | } | |
500 | ||
501 | /* re-show current frame. */ | |
502 | show_stack_frame(cur_frame); | |
503 | } | |
504 | ||
505 | /* Switch from one thread to another. */ | |
506 | ||
507 | static void | |
508 | switch_to_thread (pid) | |
509 | int pid; | |
510 | { | |
511 | if (pid == inferior_pid) | |
512 | return; | |
513 | ||
514 | inferior_pid = pid; | |
515 | flush_cached_frames (); | |
516 | registers_changed (); | |
517 | stop_pc = read_pc(); | |
518 | select_frame (get_current_frame (), 0); | |
519 | } | |
520 | ||
521 | static void | |
522 | restore_current_thread (pid) | |
523 | int pid; | |
524 | { | |
525 | if (pid != inferior_pid) | |
526 | { | |
527 | switch_to_thread (pid); | |
528 | print_stack_frame( get_current_frame(), 0, -1); | |
529 | } | |
530 | } | |
531 | ||
532 | /* Apply a GDB command to a list of threads. List syntax is a whitespace | |
533 | seperated list of numbers, or ranges, or the keyword `all'. Ranges consist | |
534 | of two numbers seperated by a hyphen. Examples: | |
535 | ||
536 | thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4 | |
537 | thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9 | |
538 | thread apply all p x/i $pc Apply x/i $pc cmd to all threads | |
539 | */ | |
540 | ||
541 | static void | |
542 | thread_apply_all_command (cmd, from_tty) | |
543 | char *cmd; | |
544 | int from_tty; | |
545 | { | |
546 | struct thread_info *tp; | |
547 | struct cleanup *old_chain; | |
548 | ||
549 | if (cmd == NULL || *cmd == '\000') | |
550 | error ("Please specify a command following the thread ID list"); | |
551 | ||
552 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, | |
553 | (void *) inferior_pid); | |
554 | ||
555 | for (tp = thread_list; tp; tp = tp->next) | |
556 | if (thread_alive (tp)) | |
557 | { | |
558 | switch_to_thread (tp->pid); | |
559 | #ifdef HPUXHPPA | |
560 | printf_filtered ("\nThread %d (%s):\n", | |
561 | 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 | static void | |
572 | thread_apply_command (tidlist, from_tty) | |
573 | char *tidlist; | |
574 | int from_tty; | |
575 | { | |
576 | char *cmd; | |
577 | char *p; | |
578 | struct cleanup *old_chain; | |
579 | ||
580 | if (tidlist == NULL || *tidlist == '\000') | |
581 | error ("Please specify a thread ID list"); | |
582 | ||
583 | for (cmd = tidlist; *cmd != '\000' && !isalpha(*cmd); cmd++); | |
584 | ||
585 | if (*cmd == '\000') | |
586 | error ("Please specify a command following the thread ID list"); | |
587 | ||
588 | old_chain = make_cleanup ((make_cleanup_func) restore_current_thread, | |
589 | (void *) inferior_pid); | |
590 | ||
591 | while (tidlist < cmd) | |
592 | { | |
593 | struct thread_info *tp; | |
594 | int start, end; | |
595 | ||
596 | start = strtol (tidlist, &p, 10); | |
597 | if (p == tidlist) | |
598 | error ("Error parsing %s", tidlist); | |
599 | tidlist = p; | |
600 | ||
601 | while (*tidlist == ' ' || *tidlist == '\t') | |
602 | tidlist++; | |
603 | ||
604 | if (*tidlist == '-') /* Got a range of IDs? */ | |
605 | { | |
606 | tidlist++; /* Skip the - */ | |
607 | end = strtol (tidlist, &p, 10); | |
608 | if (p == tidlist) | |
609 | error ("Error parsing %s", tidlist); | |
610 | tidlist = p; | |
611 | ||
612 | while (*tidlist == ' ' || *tidlist == '\t') | |
613 | tidlist++; | |
614 | } | |
615 | else | |
616 | end = start; | |
617 | ||
618 | for (; start <= end; start++) | |
619 | { | |
620 | tp = find_thread_id (start); | |
621 | ||
622 | if (!tp) | |
623 | warning ("Unknown thread %d.", start); | |
624 | else if (!thread_alive (tp)) | |
625 | warning ("Thread %d has terminated.", start); | |
626 | else | |
627 | { | |
628 | switch_to_thread (tp->pid); | |
629 | #ifdef HPUXHPPA | |
630 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
631 | target_tid_to_str (inferior_pid)); | |
632 | #else | |
633 | printf_filtered ("\nThread %d (%s):\n", tp->num, | |
634 | target_pid_to_str (inferior_pid)); | |
635 | #endif | |
636 | execute_command (cmd, from_tty); | |
637 | } | |
638 | } | |
639 | } | |
640 | } | |
641 | ||
642 | /* Switch to the specified thread. Will dispatch off to thread_apply_command | |
643 | if prefix of arg is `apply'. */ | |
644 | ||
645 | static void | |
646 | thread_command (tidstr, from_tty) | |
647 | char *tidstr; | |
648 | int from_tty; | |
649 | { | |
650 | int num; | |
651 | struct thread_info *tp; | |
652 | ||
653 | if (!tidstr) | |
654 | { | |
655 | /* Don't generate an error, just say which thread is current. */ | |
656 | if (target_has_stack) | |
657 | printf_filtered ("[Current thread is %d (%s)]\n", | |
658 | pid_to_thread_id(inferior_pid), | |
659 | #if defined(HPUXHPPA) | |
660 | target_tid_to_str(inferior_pid) | |
661 | #else | |
662 | target_pid_to_str(inferior_pid) | |
663 | #endif | |
664 | ); | |
665 | else | |
666 | error ("No stack."); | |
667 | return; | |
668 | } | |
669 | num = atoi (tidstr); | |
670 | ||
671 | tp = find_thread_id (num); | |
672 | ||
673 | if (!tp) | |
674 | error ("Thread ID %d not known. Use the \"info threads\" command to\n\ | |
675 | see the IDs of currently known threads.", num); | |
676 | ||
677 | if (!thread_alive (tp)) | |
678 | error ("Thread ID %d has terminated.\n", num); | |
679 | ||
680 | switch_to_thread (tp->pid); | |
681 | ||
682 | if (context_hook) | |
683 | context_hook (num); | |
684 | ||
685 | printf_filtered ("[Switching to thread %d (%s)]\n", | |
686 | pid_to_thread_id (inferior_pid), | |
687 | #if defined(HPUXHPPA) | |
688 | target_tid_to_str (inferior_pid) | |
689 | #else | |
690 | target_pid_to_str (inferior_pid) | |
691 | #endif | |
692 | ); | |
693 | print_stack_frame (selected_frame, selected_frame_level, 1); | |
694 | } | |
695 | ||
696 | /* Commands with a prefix of `thread'. */ | |
697 | struct cmd_list_element *thread_cmd_list = NULL; | |
698 | ||
699 | void | |
700 | _initialize_thread () | |
701 | { | |
702 | static struct cmd_list_element *thread_apply_list = NULL; | |
c906108c SS |
703 | |
704 | add_info ("threads", info_threads_command, | |
705 | "IDs of currently known threads."); | |
706 | ||
707 | add_prefix_cmd ("thread", class_run, thread_command, | |
708 | "Use this command to switch between threads.\n\ | |
709 | The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1, | |
710 | &cmdlist); | |
711 | ||
712 | add_prefix_cmd ("apply", class_run, thread_apply_command, | |
713 | "Apply a command to a list of threads.", | |
714 | &thread_apply_list, "apply ", 1, &thread_cmd_list); | |
715 | ||
716 | add_cmd ("all", class_run, thread_apply_all_command, | |
717 | "Apply a command to all threads.", | |
718 | &thread_apply_list); | |
719 | ||
720 | if (!xdb_commands) | |
721 | add_com_alias ("t", "thread", class_run, 1); | |
722 | } |