1 /* Multi-process/thread control for GDB, the GNU debugger.
3 Copyright (C) 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009
5 Free Software Foundation, Inc.
7 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
31 #include "gdbthread.h"
32 #include "exceptions.h"
37 #include "gdb_string.h"
40 #include <sys/types.h>
45 #include "cli/cli-decode.h"
47 /* Definition of struct thread_info exported to gdbthread.h */
49 /* Prototypes for exported functions. */
51 void _initialize_thread (void);
53 /* Prototypes for local functions. */
55 static struct thread_info
*thread_list
= NULL
;
56 static int highest_thread_num
;
58 static void thread_command (char *tidstr
, int from_tty
);
59 static void thread_apply_all_command (char *, int);
60 static int thread_alive (struct thread_info
*);
61 static void info_threads_command (char *, int);
62 static void thread_apply_command (char *, int);
63 static void restore_current_thread (ptid_t
);
64 static void prune_threads (void);
66 /* Frontend view of the thread state. Possible extensions: stepping,
67 finishing, until(ling),... */
75 extern struct thread_info
*
76 inferior_thread (void)
78 struct thread_info
*tp
= find_thread_pid (inferior_ptid
);
84 delete_step_resume_breakpoint (struct thread_info
*tp
)
86 if (tp
&& tp
->step_resume_breakpoint
)
88 delete_breakpoint (tp
->step_resume_breakpoint
);
89 tp
->step_resume_breakpoint
= NULL
;
94 clear_thread_inferior_resources (struct thread_info
*tp
)
96 /* NOTE: this will take care of any left-over step_resume breakpoints,
97 but not any user-specified thread-specific breakpoints. We can not
98 delete the breakpoint straight-off, because the inferior might not
99 be stopped at the moment. */
100 if (tp
->step_resume_breakpoint
)
102 tp
->step_resume_breakpoint
->disposition
= disp_del_at_next_stop
;
103 tp
->step_resume_breakpoint
= NULL
;
106 bpstat_clear (&tp
->stop_bpstat
);
108 discard_all_intermediate_continuations_thread (tp
);
109 discard_all_continuations_thread (tp
);
113 free_thread (struct thread_info
*tp
)
115 clear_thread_inferior_resources (tp
);
117 /* FIXME: do I ever need to call the back-end to give it a
118 chance at this private data before deleting the thread? */
126 init_thread_list (void)
128 struct thread_info
*tp
, *tpnext
;
130 highest_thread_num
= 0;
135 for (tp
= thread_list
; tp
; tp
= tpnext
)
145 add_thread_silent (ptid_t ptid
)
147 struct thread_info
*tp
;
149 tp
= find_thread_pid (ptid
);
151 /* Found an old thread with the same id. It has to be dead,
152 otherwise we wouldn't be adding a new thread with the same id.
153 The OS is reusing this id --- delete it, and recreate a new
156 /* In addition to deleting the thread, if this is the current
157 thread, then we need to take care that delete_thread doesn't
158 really delete the thread if it is inferior_ptid. Create a
159 new template thread in the list with an invalid ptid, switch
160 to it, delete the original thread, reset the new thread's
161 ptid, and switch to it. */
163 if (ptid_equal (inferior_ptid
, ptid
))
165 tp
= xmalloc (sizeof (*tp
));
166 memset (tp
, 0, sizeof (*tp
));
167 tp
->ptid
= minus_one_ptid
;
168 tp
->num
= ++highest_thread_num
;
169 tp
->next
= thread_list
;
172 /* Make switch_to_thread not read from the thread. */
173 tp
->state_
= THREAD_EXITED
;
174 switch_to_thread (minus_one_ptid
);
176 /* Now we can delete it. */
177 delete_thread (ptid
);
179 /* Now reset its ptid, and reswitch inferior_ptid to it. */
181 tp
->state_
= THREAD_STOPPED
;
182 switch_to_thread (ptid
);
184 observer_notify_new_thread (tp
);
190 /* Just go ahead and delete it. */
191 delete_thread (ptid
);
194 tp
= (struct thread_info
*) xmalloc (sizeof (*tp
));
195 memset (tp
, 0, sizeof (*tp
));
197 tp
->num
= ++highest_thread_num
;
198 tp
->next
= thread_list
;
201 observer_notify_new_thread (tp
);
207 add_thread_with_info (ptid_t ptid
, struct private_thread_info
*private)
209 struct thread_info
*result
= add_thread_silent (ptid
);
211 result
->private = private;
213 if (print_thread_events
)
214 printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid
));
216 annotate_new_thread ();
221 add_thread (ptid_t ptid
)
223 return add_thread_with_info (ptid
, NULL
);
226 /* Delete thread PTID. If SILENT, don't notify the observer of this
229 delete_thread_1 (ptid_t ptid
, int silent
)
231 struct thread_info
*tp
, *tpprev
;
235 for (tp
= thread_list
; tp
; tpprev
= tp
, tp
= tp
->next
)
236 if (ptid_equal (tp
->ptid
, ptid
))
242 /* If this is the current thread, or there's code out there that
243 relies on it existing (refcount > 0) we can't delete yet. Mark
244 it as exited, and notify it. */
246 || ptid_equal (tp
->ptid
, inferior_ptid
))
248 if (tp
->state_
!= THREAD_EXITED
)
251 observer_notify_thread_exit (tp
);
253 /* Tag it as exited. */
254 tp
->state_
= THREAD_EXITED
;
256 /* Clear breakpoints, etc. associated with this thread. */
257 clear_thread_inferior_resources (tp
);
260 /* Will be really deleted some other time. */
265 tpprev
->next
= tp
->next
;
267 thread_list
= tp
->next
;
269 /* Notify thread exit, but only if we haven't already. */
270 if (!silent
&& tp
->state_
!= THREAD_EXITED
)
271 observer_notify_thread_exit (tp
);
276 /* Delete thread PTID and notify of thread exit. If this is
277 inferior_ptid, don't actually delete it, but tag it as exited and
278 do the notification. If PTID is the user selected thread, clear
281 delete_thread (ptid_t ptid
)
283 delete_thread_1 (ptid
, 0 /* not silent */);
287 delete_thread_silent (ptid_t ptid
)
289 delete_thread_1 (ptid
, 1 /* silent */);
293 find_thread_id (int num
)
295 struct thread_info
*tp
;
297 for (tp
= thread_list
; tp
; tp
= tp
->next
)
304 /* Find a thread_info by matching PTID. */
306 find_thread_pid (ptid_t ptid
)
308 struct thread_info
*tp
;
310 for (tp
= thread_list
; tp
; tp
= tp
->next
)
311 if (ptid_equal (tp
->ptid
, ptid
))
318 * Thread iterator function.
320 * Calls a callback function once for each thread, so long as
321 * the callback function returns false. If the callback function
322 * returns true, the iteration will end and the current thread
323 * will be returned. This can be useful for implementing a
324 * search for a thread with arbitrary attributes, or for applying
325 * some operation to every thread.
327 * FIXME: some of the existing functionality, such as
328 * "Thread apply all", might be rewritten using this functionality.
332 iterate_over_threads (int (*callback
) (struct thread_info
*, void *),
335 struct thread_info
*tp
, *next
;
337 for (tp
= thread_list
; tp
; tp
= next
)
340 if ((*callback
) (tp
, data
))
351 struct thread_info
*tp
;
353 for (tp
= thread_list
; tp
; tp
= tp
->next
)
360 valid_thread_id (int num
)
362 struct thread_info
*tp
;
364 for (tp
= thread_list
; tp
; tp
= tp
->next
)
372 pid_to_thread_id (ptid_t ptid
)
374 struct thread_info
*tp
;
376 for (tp
= thread_list
; tp
; tp
= tp
->next
)
377 if (ptid_equal (tp
->ptid
, ptid
))
384 thread_id_to_pid (int num
)
386 struct thread_info
*thread
= find_thread_id (num
);
390 return pid_to_ptid (-1);
394 in_thread_list (ptid_t ptid
)
396 struct thread_info
*tp
;
398 for (tp
= thread_list
; tp
; tp
= tp
->next
)
399 if (ptid_equal (tp
->ptid
, ptid
))
402 return 0; /* Never heard of 'im */
405 /* Print a list of thread ids currently known, and the total number of
406 threads. To be used from within catch_errors. */
408 do_captured_list_thread_ids (struct ui_out
*uiout
, void *arg
)
410 struct thread_info
*tp
;
412 struct cleanup
*cleanup_chain
;
415 target_find_new_threads ();
417 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "thread-ids");
419 for (tp
= thread_list
; tp
; tp
= tp
->next
)
421 if (tp
->state_
== THREAD_EXITED
)
424 ui_out_field_int (uiout
, "thread-id", tp
->num
);
427 do_cleanups (cleanup_chain
);
428 ui_out_field_int (uiout
, "number-of-threads", num
);
432 /* Official gdblib interface function to get a list of thread ids and
435 gdb_list_thread_ids (struct ui_out
*uiout
, char **error_message
)
437 if (catch_exceptions_with_msg (uiout
, do_captured_list_thread_ids
, NULL
,
438 error_message
, RETURN_MASK_ALL
) < 0)
443 /* Return true if TP is an active thread. */
445 thread_alive (struct thread_info
*tp
)
447 if (tp
->state_
== THREAD_EXITED
)
449 if (!target_thread_alive (tp
->ptid
))
457 struct thread_info
*tp
, *next
;
459 for (tp
= thread_list
; tp
; tp
= next
)
462 if (!thread_alive (tp
))
463 delete_thread (tp
->ptid
);
468 thread_change_ptid (ptid_t old_ptid
, ptid_t new_ptid
)
470 struct inferior
*inf
;
471 struct thread_info
*tp
;
473 /* It can happen that what we knew as the target inferior id
474 changes. E.g, target remote may only discover the remote process
475 pid after adding the inferior to GDB's list. */
476 inf
= find_inferior_pid (ptid_get_pid (old_ptid
));
477 inf
->pid
= ptid_get_pid (new_ptid
);
479 tp
= find_thread_pid (old_ptid
);
482 observer_notify_thread_ptid_changed (old_ptid
, new_ptid
);
486 set_running (ptid_t ptid
, int running
)
488 struct thread_info
*tp
;
490 /* We try not to notify the observer if no thread has actually changed
491 the running state -- merely to reduce the number of messages to
492 frontend. Frontend is supposed to handle multiple *running just fine. */
493 if (PIDGET (ptid
) == -1)
496 for (tp
= thread_list
; tp
; tp
= tp
->next
)
498 if (tp
->state_
== THREAD_EXITED
)
500 if (running
&& tp
->state_
== THREAD_STOPPED
)
502 tp
->state_
= running
? THREAD_RUNNING
: THREAD_STOPPED
;
504 if (any_started
&& !suppress_resume_observer
)
505 observer_notify_target_resumed (ptid
);
510 tp
= find_thread_pid (ptid
);
512 gdb_assert (tp
->state_
!= THREAD_EXITED
);
513 if (running
&& tp
->state_
== THREAD_STOPPED
)
515 tp
->state_
= running
? THREAD_RUNNING
: THREAD_STOPPED
;
516 if (started
&& !suppress_resume_observer
)
517 observer_notify_target_resumed (ptid
);
522 is_thread_state (ptid_t ptid
, enum thread_state state
)
524 struct thread_info
*tp
;
526 if (!target_has_execution
)
529 tp
= find_thread_pid (ptid
);
531 return tp
->state_
== state
;
535 is_stopped (ptid_t ptid
)
537 /* Without execution, this property is always true. */
538 if (!target_has_execution
)
541 return is_thread_state (ptid
, THREAD_STOPPED
);
545 is_exited (ptid_t ptid
)
547 /* Without execution, this property is always false. */
548 if (!target_has_execution
)
551 return is_thread_state (ptid
, THREAD_EXITED
);
555 is_running (ptid_t ptid
)
557 /* Without execution, this property is always false. */
558 if (!target_has_execution
)
561 return is_thread_state (ptid
, THREAD_RUNNING
);
567 struct thread_info
*tp
;
569 if (!target_has_execution
)
572 for (tp
= thread_list
; tp
; tp
= tp
->next
)
573 if (tp
->state_
== THREAD_RUNNING
)
580 is_executing (ptid_t ptid
)
582 struct thread_info
*tp
;
584 if (!target_has_execution
)
587 tp
= find_thread_pid (ptid
);
589 return tp
->executing_
;
593 set_executing (ptid_t ptid
, int executing
)
595 struct thread_info
*tp
;
597 if (PIDGET (ptid
) == -1)
599 for (tp
= thread_list
; tp
; tp
= tp
->next
)
600 tp
->executing_
= executing
;
604 tp
= find_thread_pid (ptid
);
606 tp
->executing_
= executing
;
611 set_stop_requested (ptid_t ptid
, int stop
)
613 struct thread_info
*tp
;
614 int all
= ptid_equal (ptid
, minus_one_ptid
);
616 if (all
|| ptid_is_pid (ptid
))
618 for (tp
= thread_list
; tp
; tp
= tp
->next
)
619 if (all
|| ptid_get_pid (tp
->ptid
) == ptid_get_pid (ptid
))
620 tp
->stop_requested
= stop
;
624 tp
= find_thread_pid (ptid
);
626 tp
->stop_requested
= stop
;
629 /* Call the stop requested observer so other components of GDB can
630 react to this request. */
632 observer_notify_thread_stop_requested (ptid
);
636 finish_thread_state (ptid_t ptid
)
638 struct thread_info
*tp
;
642 all
= ptid_equal (ptid
, minus_one_ptid
);
644 if (all
|| ptid_is_pid (ptid
))
646 for (tp
= thread_list
; tp
; tp
= tp
->next
)
648 if (tp
->state_
== THREAD_EXITED
)
650 if (all
|| ptid_get_pid (ptid
) == ptid_get_pid (tp
->ptid
))
652 if (tp
->executing_
&& tp
->state_
== THREAD_STOPPED
)
654 tp
->state_
= tp
->executing_
? THREAD_RUNNING
: THREAD_STOPPED
;
660 tp
= find_thread_pid (ptid
);
662 if (tp
->state_
!= THREAD_EXITED
)
664 if (tp
->executing_
&& tp
->state_
== THREAD_STOPPED
)
666 tp
->state_
= tp
->executing_
? THREAD_RUNNING
: THREAD_STOPPED
;
671 observer_notify_target_resumed (ptid
);
675 finish_thread_state_cleanup (void *arg
)
677 ptid_t
*ptid_p
= arg
;
681 finish_thread_state (*ptid_p
);
684 /* Prints the list of threads and their details on UIOUT.
685 This is a version of 'info_thread_command' suitable for
687 If REQUESTED_THREAD is not -1, it's the GDB id of the thread
688 that should be printed. Otherwise, all threads are
690 If PID is not -1, only print threads from the process PID.
691 Otherwise, threads from all attached PIDs are printed.
692 If both REQUESTED_THREAD and PID are not -1, then the thread
693 is printed if it belongs to the specified process. Otherwise,
694 an error is raised. */
696 print_thread_info (struct ui_out
*uiout
, int requested_thread
, int pid
)
698 struct thread_info
*tp
;
700 struct cleanup
*old_chain
;
702 int current_thread
= -1;
705 target_find_new_threads ();
706 current_ptid
= inferior_ptid
;
708 /* We'll be switching threads temporarily. */
709 old_chain
= make_cleanup_restore_current_thread ();
711 make_cleanup_ui_out_list_begin_end (uiout
, "threads");
712 for (tp
= thread_list
; tp
; tp
= tp
->next
)
714 struct cleanup
*chain2
;
716 if (requested_thread
!= -1 && tp
->num
!= requested_thread
)
719 if (pid
!= -1 && PIDGET (tp
->ptid
) != pid
)
721 if (requested_thread
!= -1)
722 error (_("Requested thread not found in requested process"));
726 if (ptid_equal (tp
->ptid
, current_ptid
))
727 current_thread
= tp
->num
;
729 if (tp
->state_
== THREAD_EXITED
)
732 chain2
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
734 if (ptid_equal (tp
->ptid
, current_ptid
))
735 ui_out_text (uiout
, "* ");
737 ui_out_text (uiout
, " ");
739 ui_out_field_int (uiout
, "id", tp
->num
);
740 ui_out_text (uiout
, " ");
741 ui_out_field_string (uiout
, "target-id", target_tid_to_str (tp
->ptid
));
743 extra_info
= target_extra_thread_info (tp
);
746 ui_out_text (uiout
, " (");
747 ui_out_field_string (uiout
, "details", extra_info
);
748 ui_out_text (uiout
, ")");
750 ui_out_text (uiout
, " ");
752 if (tp
->state_
== THREAD_RUNNING
)
753 ui_out_text (uiout
, "(running)\n");
756 /* The switch below puts us at the top of the stack (leaf
758 switch_to_thread (tp
->ptid
);
759 print_stack_frame (get_selected_frame (NULL
),
760 /* For MI output, print frame level. */
761 ui_out_is_mi_like_p (uiout
),
765 if (ui_out_is_mi_like_p (uiout
))
767 char *state
= "stopped";
768 if (tp
->state_
== THREAD_RUNNING
)
770 ui_out_field_string (uiout
, "state", state
);
773 do_cleanups (chain2
);
776 /* Restores the current thread and the frame selected before
777 the "info threads" command. */
778 do_cleanups (old_chain
);
780 if (pid
== -1 && requested_thread
== -1 )
782 gdb_assert (current_thread
!= -1
784 if (current_thread
!= -1 && ui_out_is_mi_like_p (uiout
))
785 ui_out_field_int (uiout
, "current-thread-id", current_thread
);
787 if (current_thread
!= -1 && is_exited (current_ptid
))
788 ui_out_message (uiout
, 0, "\n\
789 The current thread <Thread ID %d> has terminated. See `help thread'.\n",
795 /* Print information about currently known threads
797 * Note: this has the drawback that it _really_ switches
798 * threads, which frees the frame cache. A no-side
799 * effects info-threads command would be nicer.
803 info_threads_command (char *arg
, int from_tty
)
805 print_thread_info (uiout
, -1, -1);
808 /* Switch from one thread to another. */
811 switch_to_thread (ptid_t ptid
)
813 if (ptid_equal (ptid
, inferior_ptid
))
816 inferior_ptid
= ptid
;
817 reinit_frame_cache ();
818 registers_changed ();
820 /* We don't check for is_stopped, because we're called at times
821 while in the TARGET_RUNNING state, e.g., while handling an
823 if (!is_exited (ptid
) && !is_executing (ptid
))
824 stop_pc
= read_pc ();
826 stop_pc
= ~(CORE_ADDR
) 0;
830 restore_current_thread (ptid_t ptid
)
832 switch_to_thread (ptid
);
836 restore_selected_frame (struct frame_id a_frame_id
, int frame_level
)
838 struct frame_info
*frame
= NULL
;
841 gdb_assert (frame_level
>= 0);
843 /* Restore by level first, check if the frame id is the same as
844 expected. If that fails, try restoring by frame id. If that
845 fails, nothing to do, just warn the user. */
848 frame
= find_relative_frame (get_current_frame (), &count
);
851 /* Either the frame ids match, of they're both invalid. The
852 latter case is not failsafe, but since it's highly unlikely
853 the search by level finds the wrong frame, it's 99.9(9)% of
854 the time (for all practical purposes) safe. */
855 && (frame_id_eq (get_frame_id (frame
), a_frame_id
)
856 /* Note: could be better to check every frame_id
857 member for equality here. */
858 || (!frame_id_p (get_frame_id (frame
))
859 && !frame_id_p (a_frame_id
))))
861 /* Cool, all is fine. */
862 select_frame (frame
);
866 frame
= frame_find_by_id (a_frame_id
);
869 /* Cool, refound it. */
870 select_frame (frame
);
874 /* Nothing else to do, the frame layout really changed. Select the
875 innermost stack frame. */
876 select_frame (get_current_frame ());
879 if (!ui_out_is_mi_like_p (uiout
))
882 Couldn't restore frame #%d in current thread, at reparsed frame #0\n"),
884 /* For MI, we should probably have a notification about
885 current frame change. But this error is not very
886 likely, so don't bother for now. */
887 print_stack_frame (get_selected_frame (NULL
), 1, SRC_LINE
);
891 struct current_thread_cleanup
893 ptid_t inferior_ptid
;
894 struct frame_id selected_frame_id
;
895 int selected_frame_level
;
900 do_restore_current_thread_cleanup (void *arg
)
902 struct thread_info
*tp
;
903 struct current_thread_cleanup
*old
= arg
;
904 restore_current_thread (old
->inferior_ptid
);
906 /* The running state of the originally selected thread may have
907 changed, so we have to recheck it here. */
909 && is_stopped (inferior_ptid
)
910 && target_has_registers
912 && target_has_memory
)
913 restore_selected_frame (old
->selected_frame_id
,
914 old
->selected_frame_level
);
918 restore_current_thread_cleanup_dtor (void *arg
)
920 struct current_thread_cleanup
*old
= arg
;
921 struct thread_info
*tp
;
922 tp
= find_thread_pid (old
->inferior_ptid
);
929 make_cleanup_restore_current_thread (void)
931 struct thread_info
*tp
;
932 struct frame_info
*frame
;
933 struct current_thread_cleanup
*old
;
935 old
= xmalloc (sizeof (struct current_thread_cleanup
));
936 old
->inferior_ptid
= inferior_ptid
;
937 old
->was_stopped
= is_stopped (inferior_ptid
);
939 && target_has_registers
941 && target_has_memory
)
942 frame
= get_selected_frame (NULL
);
946 old
->selected_frame_id
= get_frame_id (frame
);
947 old
->selected_frame_level
= frame_relative_level (frame
);
949 tp
= find_thread_pid (inferior_ptid
);
953 return make_cleanup_dtor (do_restore_current_thread_cleanup
, old
,
954 restore_current_thread_cleanup_dtor
);
957 /* Apply a GDB command to a list of threads. List syntax is a whitespace
958 seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
959 of two numbers seperated by a hyphen. Examples:
961 thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
962 thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
963 thread apply all p x/i $pc Apply x/i $pc cmd to all threads
967 thread_apply_all_command (char *cmd
, int from_tty
)
969 struct thread_info
*tp
;
970 struct cleanup
*old_chain
;
973 if (cmd
== NULL
|| *cmd
== '\000')
974 error (_("Please specify a command following the thread ID list"));
977 target_find_new_threads ();
979 old_chain
= make_cleanup_restore_current_thread ();
981 /* Save a copy of the command in case it is clobbered by
983 saved_cmd
= xstrdup (cmd
);
984 make_cleanup (xfree
, saved_cmd
);
985 for (tp
= thread_list
; tp
; tp
= tp
->next
)
986 if (thread_alive (tp
))
988 switch_to_thread (tp
->ptid
);
990 printf_filtered (_("\nThread %d (%s):\n"),
991 tp
->num
, target_tid_to_str (inferior_ptid
));
992 execute_command (cmd
, from_tty
);
993 strcpy (cmd
, saved_cmd
); /* Restore exact command used previously */
996 do_cleanups (old_chain
);
1000 thread_apply_command (char *tidlist
, int from_tty
)
1004 struct cleanup
*old_chain
;
1007 if (tidlist
== NULL
|| *tidlist
== '\000')
1008 error (_("Please specify a thread ID list"));
1010 for (cmd
= tidlist
; *cmd
!= '\000' && !isalpha (*cmd
); cmd
++);
1013 error (_("Please specify a command following the thread ID list"));
1015 /* Save a copy of the command in case it is clobbered by
1017 saved_cmd
= xstrdup (cmd
);
1018 old_chain
= make_cleanup (xfree
, saved_cmd
);
1019 while (tidlist
< cmd
)
1021 struct thread_info
*tp
;
1024 start
= strtol (tidlist
, &p
, 10);
1026 error (_("Error parsing %s"), tidlist
);
1029 while (*tidlist
== ' ' || *tidlist
== '\t')
1032 if (*tidlist
== '-') /* Got a range of IDs? */
1034 tidlist
++; /* Skip the - */
1035 end
= strtol (tidlist
, &p
, 10);
1037 error (_("Error parsing %s"), tidlist
);
1040 while (*tidlist
== ' ' || *tidlist
== '\t')
1046 make_cleanup_restore_current_thread ();
1048 for (; start
<= end
; start
++)
1050 tp
= find_thread_id (start
);
1053 warning (_("Unknown thread %d."), start
);
1054 else if (!thread_alive (tp
))
1055 warning (_("Thread %d has terminated."), start
);
1058 switch_to_thread (tp
->ptid
);
1060 printf_filtered (_("\nThread %d (%s):\n"), tp
->num
,
1061 target_tid_to_str (inferior_ptid
));
1062 execute_command (cmd
, from_tty
);
1064 /* Restore exact command used previously. */
1065 strcpy (cmd
, saved_cmd
);
1070 do_cleanups (old_chain
);
1073 /* Switch to the specified thread. Will dispatch off to thread_apply_command
1074 if prefix of arg is `apply'. */
1077 thread_command (char *tidstr
, int from_tty
)
1081 if (target_has_stack
)
1083 if (is_exited (inferior_ptid
))
1084 printf_filtered (_("[Current thread is %d (%s) (exited)]\n"),
1085 pid_to_thread_id (inferior_ptid
),
1086 target_tid_to_str (inferior_ptid
));
1088 printf_filtered (_("[Current thread is %d (%s)]\n"),
1089 pid_to_thread_id (inferior_ptid
),
1090 target_tid_to_str (inferior_ptid
));
1093 error (_("No stack."));
1097 gdb_thread_select (uiout
, tidstr
, NULL
);
1100 /* Print notices when new threads are attached and detached. */
1101 int print_thread_events
= 1;
1103 show_print_thread_events (struct ui_file
*file
, int from_tty
,
1104 struct cmd_list_element
*c
, const char *value
)
1106 fprintf_filtered (file
, _("\
1107 Printing of thread events is %s.\n"),
1112 do_captured_thread_select (struct ui_out
*uiout
, void *tidstr
)
1115 struct thread_info
*tp
;
1117 num
= value_as_long (parse_and_eval (tidstr
));
1119 tp
= find_thread_id (num
);
1122 error (_("Thread ID %d not known."), num
);
1124 if (!thread_alive (tp
))
1125 error (_("Thread ID %d has terminated."), num
);
1127 switch_to_thread (tp
->ptid
);
1129 annotate_thread_changed ();
1131 ui_out_text (uiout
, "[Switching to thread ");
1132 ui_out_field_int (uiout
, "new-thread-id", pid_to_thread_id (inferior_ptid
));
1133 ui_out_text (uiout
, " (");
1134 ui_out_text (uiout
, target_tid_to_str (inferior_ptid
));
1135 ui_out_text (uiout
, ")]");
1137 /* Note that we can't reach this with an exited thread, due to the
1138 thread_alive check above. */
1139 if (tp
->state_
== THREAD_RUNNING
)
1140 ui_out_text (uiout
, "(running)\n");
1142 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
1144 /* Since the current thread may have changed, see if there is any
1145 exited thread we can now delete. */
1152 gdb_thread_select (struct ui_out
*uiout
, char *tidstr
, char **error_message
)
1154 if (catch_exceptions_with_msg (uiout
, do_captured_thread_select
, tidstr
,
1155 error_message
, RETURN_MASK_ALL
) < 0)
1160 /* Commands with a prefix of `thread'. */
1161 struct cmd_list_element
*thread_cmd_list
= NULL
;
1164 _initialize_thread (void)
1166 static struct cmd_list_element
*thread_apply_list
= NULL
;
1167 struct cmd_list_element
*c
;
1169 c
= add_info ("threads", info_threads_command
,
1170 _("IDs of currently known threads."));
1171 set_cmd_no_selected_thread_ok (c
);
1173 c
= add_prefix_cmd ("thread", class_run
, thread_command
, _("\
1174 Use this command to switch between threads.\n\
1175 The new thread ID must be currently known."),
1176 &thread_cmd_list
, "thread ", 1, &cmdlist
);
1177 set_cmd_no_selected_thread_ok (c
);
1179 c
= add_prefix_cmd ("apply", class_run
, thread_apply_command
,
1180 _("Apply a command to a list of threads."),
1181 &thread_apply_list
, "thread apply ", 1, &thread_cmd_list
);
1182 set_cmd_no_selected_thread_ok (c
);
1184 c
= add_cmd ("all", class_run
, thread_apply_all_command
,
1185 _("Apply a command to all threads."), &thread_apply_list
);
1186 set_cmd_no_selected_thread_ok (c
);
1189 add_com_alias ("t", "thread", class_run
, 1);
1191 add_setshow_boolean_cmd ("thread-events", no_class
,
1192 &print_thread_events
, _("\
1193 Set printing of thread events (such as thread start and exit)."), _("\
1194 Show printing of thread events (such as thread start and exit)."), NULL
,
1196 show_print_thread_events
,
1197 &setprintlist
, &showprintlist
);