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 Free Software Foundation, Inc.
6 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
8 This file is part of GDB.
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 3 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdbthread.h"
31 #include "exceptions.h"
36 #include "gdb_string.h"
39 #include <sys/types.h>
44 #include "cli/cli-decode.h"
46 /* Definition of struct thread_info exported to gdbthread.h */
48 /* Prototypes for exported functions. */
50 void _initialize_thread (void);
52 /* Prototypes for local functions. */
54 static struct thread_info
*thread_list
= NULL
;
55 static int highest_thread_num
;
57 static void thread_command (char *tidstr
, int from_tty
);
58 static void thread_apply_all_command (char *, int);
59 static int thread_alive (struct thread_info
*);
60 static void info_threads_command (char *, int);
61 static void thread_apply_command (char *, int);
62 static void restore_current_thread (ptid_t
);
63 static void prune_threads (void);
65 /* Frontend view of the thread state. Possible extensions: stepping,
66 finishing, until(ling),... */
74 extern struct thread_info
*
75 inferior_thread (void)
77 struct thread_info
*tp
= find_thread_pid (inferior_ptid
);
83 delete_step_resume_breakpoint (struct thread_info
*tp
)
85 if (tp
&& tp
->step_resume_breakpoint
)
87 delete_breakpoint (tp
->step_resume_breakpoint
);
88 tp
->step_resume_breakpoint
= NULL
;
93 clear_thread_inferior_resources (struct thread_info
*tp
)
95 /* NOTE: this will take care of any left-over step_resume breakpoints,
96 but not any user-specified thread-specific breakpoints. We can not
97 delete the breakpoint straight-off, because the inferior might not
98 be stopped at the moment. */
99 if (tp
->step_resume_breakpoint
)
101 tp
->step_resume_breakpoint
->disposition
= disp_del_at_next_stop
;
102 tp
->step_resume_breakpoint
= NULL
;
105 bpstat_clear (&tp
->stop_bpstat
);
107 discard_all_intermediate_continuations_thread (tp
);
108 discard_all_continuations_thread (tp
);
112 free_thread (struct thread_info
*tp
)
114 clear_thread_inferior_resources (tp
);
116 /* FIXME: do I ever need to call the back-end to give it a
117 chance at this private data before deleting the thread? */
125 init_thread_list (void)
127 struct thread_info
*tp
, *tpnext
;
129 highest_thread_num
= 0;
134 for (tp
= thread_list
; tp
; tp
= tpnext
)
144 add_thread_silent (ptid_t ptid
)
146 struct thread_info
*tp
;
148 tp
= find_thread_pid (ptid
);
150 /* Found an old thread with the same id. It has to be dead,
151 otherwise we wouldn't be adding a new thread with the same id.
152 The OS is reusing this id --- delete it, and recreate a new
155 /* In addition to deleting the thread, if this is the current
156 thread, then we need to take care that delete_thread doesn't
157 really delete the thread if it is inferior_ptid. Create a
158 new template thread in the list with an invalid ptid, switch
159 to it, delete the original thread, reset the new thread's
160 ptid, and switch to it. */
162 if (ptid_equal (inferior_ptid
, ptid
))
164 tp
= xmalloc (sizeof (*tp
));
165 memset (tp
, 0, sizeof (*tp
));
166 tp
->ptid
= minus_one_ptid
;
167 tp
->num
= ++highest_thread_num
;
168 tp
->next
= thread_list
;
171 /* Make switch_to_thread not read from the thread. */
172 tp
->state_
= THREAD_EXITED
;
173 switch_to_thread (minus_one_ptid
);
175 /* Now we can delete it. */
176 delete_thread (ptid
);
178 /* Now reset its ptid, and reswitch inferior_ptid to it. */
180 tp
->state_
= THREAD_STOPPED
;
181 switch_to_thread (ptid
);
183 observer_notify_new_thread (tp
);
189 /* Just go ahead and delete it. */
190 delete_thread (ptid
);
193 tp
= (struct thread_info
*) xmalloc (sizeof (*tp
));
194 memset (tp
, 0, sizeof (*tp
));
196 tp
->num
= ++highest_thread_num
;
197 tp
->next
= thread_list
;
200 observer_notify_new_thread (tp
);
206 add_thread_with_info (ptid_t ptid
, struct private_thread_info
*private)
208 struct thread_info
*result
= add_thread_silent (ptid
);
210 result
->private = private;
212 if (print_thread_events
)
213 printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid
));
215 annotate_new_thread ();
220 add_thread (ptid_t ptid
)
222 return add_thread_with_info (ptid
, NULL
);
225 /* Delete thread PTID. If SILENT, don't notify the observer of this
228 delete_thread_1 (ptid_t ptid
, int silent
)
230 struct thread_info
*tp
, *tpprev
;
234 for (tp
= thread_list
; tp
; tpprev
= tp
, tp
= tp
->next
)
235 if (ptid_equal (tp
->ptid
, ptid
))
241 /* If this is the current thread, or there's code out there that
242 relies on it existing (refcount > 0) we can't delete yet. Mark
243 it as exited, and notify it. */
245 || ptid_equal (tp
->ptid
, inferior_ptid
))
247 if (tp
->state_
!= THREAD_EXITED
)
250 observer_notify_thread_exit (tp
);
252 /* Tag it as exited. */
253 tp
->state_
= THREAD_EXITED
;
255 /* Clear breakpoints, etc. associated with this thread. */
256 clear_thread_inferior_resources (tp
);
259 /* Will be really deleted some other time. */
264 tpprev
->next
= tp
->next
;
266 thread_list
= tp
->next
;
268 /* Notify thread exit, but only if we haven't already. */
269 if (!silent
&& tp
->state_
!= THREAD_EXITED
)
270 observer_notify_thread_exit (tp
);
275 /* Delete thread PTID and notify of thread exit. If this is
276 inferior_ptid, don't actually delete it, but tag it as exited and
277 do the notification. If PTID is the user selected thread, clear
280 delete_thread (ptid_t ptid
)
282 delete_thread_1 (ptid
, 0 /* not silent */);
286 delete_thread_silent (ptid_t ptid
)
288 delete_thread_1 (ptid
, 1 /* silent */);
292 find_thread_id (int num
)
294 struct thread_info
*tp
;
296 for (tp
= thread_list
; tp
; tp
= tp
->next
)
303 /* Find a thread_info by matching PTID. */
305 find_thread_pid (ptid_t ptid
)
307 struct thread_info
*tp
;
309 for (tp
= thread_list
; tp
; tp
= tp
->next
)
310 if (ptid_equal (tp
->ptid
, ptid
))
317 * Thread iterator function.
319 * Calls a callback function once for each thread, so long as
320 * the callback function returns false. If the callback function
321 * returns true, the iteration will end and the current thread
322 * will be returned. This can be useful for implementing a
323 * search for a thread with arbitrary attributes, or for applying
324 * some operation to every thread.
326 * FIXME: some of the existing functionality, such as
327 * "Thread apply all", might be rewritten using this functionality.
331 iterate_over_threads (int (*callback
) (struct thread_info
*, void *),
334 struct thread_info
*tp
, *next
;
336 for (tp
= thread_list
; tp
; tp
= next
)
339 if ((*callback
) (tp
, data
))
350 struct thread_info
*tp
;
352 for (tp
= thread_list
; tp
; tp
= tp
->next
)
359 valid_thread_id (int num
)
361 struct thread_info
*tp
;
363 for (tp
= thread_list
; tp
; tp
= tp
->next
)
371 pid_to_thread_id (ptid_t ptid
)
373 struct thread_info
*tp
;
375 for (tp
= thread_list
; tp
; tp
= tp
->next
)
376 if (ptid_equal (tp
->ptid
, ptid
))
383 thread_id_to_pid (int num
)
385 struct thread_info
*thread
= find_thread_id (num
);
389 return pid_to_ptid (-1);
393 in_thread_list (ptid_t ptid
)
395 struct thread_info
*tp
;
397 for (tp
= thread_list
; tp
; tp
= tp
->next
)
398 if (ptid_equal (tp
->ptid
, ptid
))
401 return 0; /* Never heard of 'im */
404 /* Print a list of thread ids currently known, and the total number of
405 threads. To be used from within catch_errors. */
407 do_captured_list_thread_ids (struct ui_out
*uiout
, void *arg
)
409 struct thread_info
*tp
;
411 struct cleanup
*cleanup_chain
;
414 target_find_new_threads ();
416 cleanup_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "thread-ids");
418 for (tp
= thread_list
; tp
; tp
= tp
->next
)
420 if (tp
->state_
== THREAD_EXITED
)
423 ui_out_field_int (uiout
, "thread-id", tp
->num
);
426 do_cleanups (cleanup_chain
);
427 ui_out_field_int (uiout
, "number-of-threads", num
);
431 /* Official gdblib interface function to get a list of thread ids and
434 gdb_list_thread_ids (struct ui_out
*uiout
, char **error_message
)
436 if (catch_exceptions_with_msg (uiout
, do_captured_list_thread_ids
, NULL
,
437 error_message
, RETURN_MASK_ALL
) < 0)
442 /* Return true if TP is an active thread. */
444 thread_alive (struct thread_info
*tp
)
446 if (tp
->state_
== THREAD_EXITED
)
448 if (!target_thread_alive (tp
->ptid
))
456 struct thread_info
*tp
, *next
;
458 for (tp
= thread_list
; tp
; tp
= next
)
461 if (!thread_alive (tp
))
462 delete_thread (tp
->ptid
);
467 thread_change_ptid (ptid_t old_ptid
, ptid_t new_ptid
)
469 struct inferior
*inf
;
470 struct thread_info
*tp
;
472 /* It can happen that what we knew as the target inferior id
473 changes. E.g, target remote may only discover the remote process
474 pid after adding the inferior to GDB's list. */
475 inf
= find_inferior_pid (ptid_get_pid (old_ptid
));
476 inf
->pid
= ptid_get_pid (new_ptid
);
478 tp
= find_thread_pid (old_ptid
);
481 observer_notify_thread_ptid_changed (old_ptid
, new_ptid
);
485 set_running (ptid_t ptid
, int running
)
487 struct thread_info
*tp
;
489 /* We try not to notify the observer if no thread has actually changed
490 the running state -- merely to reduce the number of messages to
491 frontend. Frontend is supposed to handle multiple *running just fine. */
492 if (PIDGET (ptid
) == -1)
495 for (tp
= thread_list
; tp
; tp
= tp
->next
)
497 if (tp
->state_
== THREAD_EXITED
)
499 if (running
&& tp
->state_
== THREAD_STOPPED
)
501 tp
->state_
= running
? THREAD_RUNNING
: THREAD_STOPPED
;
503 if (any_started
&& !suppress_resume_observer
)
504 observer_notify_target_resumed (ptid
);
509 tp
= find_thread_pid (ptid
);
511 gdb_assert (tp
->state_
!= THREAD_EXITED
);
512 if (running
&& tp
->state_
== THREAD_STOPPED
)
514 tp
->state_
= running
? THREAD_RUNNING
: THREAD_STOPPED
;
515 if (started
&& !suppress_resume_observer
)
516 observer_notify_target_resumed (ptid
);
521 is_thread_state (ptid_t ptid
, enum thread_state state
)
523 struct thread_info
*tp
;
525 if (!target_has_execution
)
528 tp
= find_thread_pid (ptid
);
530 return tp
->state_
== state
;
534 is_stopped (ptid_t ptid
)
536 /* Without execution, this property is always true. */
537 if (!target_has_execution
)
540 return is_thread_state (ptid
, THREAD_STOPPED
);
544 is_exited (ptid_t ptid
)
546 /* Without execution, this property is always false. */
547 if (!target_has_execution
)
550 return is_thread_state (ptid
, THREAD_EXITED
);
554 is_running (ptid_t ptid
)
556 /* Without execution, this property is always false. */
557 if (!target_has_execution
)
560 return is_thread_state (ptid
, THREAD_RUNNING
);
566 struct thread_info
*tp
;
568 if (!target_has_execution
)
571 for (tp
= thread_list
; tp
; tp
= tp
->next
)
572 if (tp
->state_
== THREAD_RUNNING
)
579 is_executing (ptid_t ptid
)
581 struct thread_info
*tp
;
583 if (!target_has_execution
)
586 tp
= find_thread_pid (ptid
);
588 return tp
->executing_
;
592 set_executing (ptid_t ptid
, int executing
)
594 struct thread_info
*tp
;
596 if (PIDGET (ptid
) == -1)
598 for (tp
= thread_list
; tp
; tp
= tp
->next
)
599 tp
->executing_
= executing
;
603 tp
= find_thread_pid (ptid
);
605 tp
->executing_
= executing
;
610 set_stop_requested (ptid_t ptid
, int stop
)
612 struct thread_info
*tp
;
613 int all
= ptid_equal (ptid
, minus_one_ptid
);
615 if (all
|| ptid_is_pid (ptid
))
617 for (tp
= thread_list
; tp
; tp
= tp
->next
)
618 if (all
|| ptid_get_pid (tp
->ptid
) == ptid_get_pid (ptid
))
619 tp
->stop_requested
= stop
;
623 tp
= find_thread_pid (ptid
);
625 tp
->stop_requested
= stop
;
628 /* Call the stop requested observer so other components of GDB can
629 react to this request. */
631 observer_notify_thread_stop_requested (ptid
);
634 /* Prints the list of threads and their details on UIOUT.
635 This is a version of 'info_thread_command' suitable for
637 If REQUESTED_THREAD is not -1, it's the GDB id of the thread
638 that should be printed. Otherwise, all threads are
641 print_thread_info (struct ui_out
*uiout
, int requested_thread
)
643 struct thread_info
*tp
;
645 struct cleanup
*old_chain
;
647 int current_thread
= -1;
650 target_find_new_threads ();
651 current_ptid
= inferior_ptid
;
653 /* We'll be switching threads temporarily. */
654 old_chain
= make_cleanup_restore_current_thread ();
656 make_cleanup_ui_out_list_begin_end (uiout
, "threads");
657 for (tp
= thread_list
; tp
; tp
= tp
->next
)
659 struct cleanup
*chain2
;
661 if (requested_thread
!= -1 && tp
->num
!= requested_thread
)
664 if (ptid_equal (tp
->ptid
, current_ptid
))
665 current_thread
= tp
->num
;
667 if (tp
->state_
== THREAD_EXITED
)
670 chain2
= make_cleanup_ui_out_tuple_begin_end (uiout
, NULL
);
672 if (ptid_equal (tp
->ptid
, current_ptid
))
673 ui_out_text (uiout
, "* ");
675 ui_out_text (uiout
, " ");
677 ui_out_field_int (uiout
, "id", tp
->num
);
678 ui_out_text (uiout
, " ");
679 ui_out_field_string (uiout
, "target-id", target_tid_to_str (tp
->ptid
));
681 if (tp
->state_
!= THREAD_EXITED
)
683 extra_info
= target_extra_thread_info (tp
);
686 ui_out_text (uiout
, " (");
687 ui_out_field_string (uiout
, "details", extra_info
);
688 ui_out_text (uiout
, ")");
690 ui_out_text (uiout
, " ");
693 if (tp
->state_
== THREAD_RUNNING
)
694 ui_out_text (uiout
, "(running)\n");
697 /* The switch below puts us at the top of the stack (leaf
699 switch_to_thread (tp
->ptid
);
700 print_stack_frame (get_selected_frame (NULL
),
701 /* For MI output, print frame level. */
702 ui_out_is_mi_like_p (uiout
),
706 if (ui_out_is_mi_like_p (uiout
))
708 char *state
= "stopped";
709 if (tp
->state_
== THREAD_EXITED
)
711 else if (tp
->state_
== THREAD_RUNNING
)
713 ui_out_field_string (uiout
, "state", state
);
716 do_cleanups (chain2
);
719 /* Restores the current thread and the frame selected before
720 the "info threads" command. */
721 do_cleanups (old_chain
);
723 if (requested_thread
== -1)
725 gdb_assert (current_thread
!= -1
727 if (current_thread
!= -1 && ui_out_is_mi_like_p (uiout
))
728 ui_out_field_int (uiout
, "current-thread-id", current_thread
);
730 if (current_thread
!= -1 && is_exited (current_ptid
))
731 ui_out_message (uiout
, 0, "\n\
732 The current thread <Thread ID %d> has terminated. See `help thread'.\n",
738 /* Print information about currently known threads
740 * Note: this has the drawback that it _really_ switches
741 * threads, which frees the frame cache. A no-side
742 * effects info-threads command would be nicer.
746 info_threads_command (char *arg
, int from_tty
)
748 print_thread_info (uiout
, -1);
751 /* Switch from one thread to another. */
754 switch_to_thread (ptid_t ptid
)
756 if (ptid_equal (ptid
, inferior_ptid
))
759 inferior_ptid
= ptid
;
760 reinit_frame_cache ();
761 registers_changed ();
763 /* We don't check for is_stopped, because we're called at times
764 while in the TARGET_RUNNING state, e.g., while handling an
766 if (!is_exited (ptid
) && !is_executing (ptid
))
767 stop_pc
= read_pc ();
769 stop_pc
= ~(CORE_ADDR
) 0;
773 restore_current_thread (ptid_t ptid
)
775 switch_to_thread (ptid
);
779 restore_selected_frame (struct frame_id a_frame_id
, int frame_level
)
781 struct frame_info
*frame
= NULL
;
784 gdb_assert (frame_level
>= 0);
786 /* Restore by level first, check if the frame id is the same as
787 expected. If that fails, try restoring by frame id. If that
788 fails, nothing to do, just warn the user. */
791 frame
= find_relative_frame (get_current_frame (), &count
);
794 /* Either the frame ids match, of they're both invalid. The
795 latter case is not failsafe, but since it's highly unlikely
796 the search by level finds the wrong frame, it's 99.9(9)% of
797 the time (for all practical purposes) safe. */
798 && (frame_id_eq (get_frame_id (frame
), a_frame_id
)
799 /* Note: could be better to check every frame_id
800 member for equality here. */
801 || (!frame_id_p (get_frame_id (frame
))
802 && !frame_id_p (a_frame_id
))))
804 /* Cool, all is fine. */
805 select_frame (frame
);
809 frame
= frame_find_by_id (a_frame_id
);
812 /* Cool, refound it. */
813 select_frame (frame
);
817 /* Nothing else to do, the frame layout really changed. Select the
818 innermost stack frame. */
819 select_frame (get_current_frame ());
822 if (!ui_out_is_mi_like_p (uiout
))
825 Couldn't restore frame #%d in current thread, at reparsed frame #0\n"),
827 /* For MI, we should probably have a notification about
828 current frame change. But this error is not very
829 likely, so don't bother for now. */
830 print_stack_frame (get_selected_frame (NULL
), 1, SRC_LINE
);
834 struct current_thread_cleanup
836 ptid_t inferior_ptid
;
837 struct frame_id selected_frame_id
;
838 int selected_frame_level
;
843 do_restore_current_thread_cleanup (void *arg
)
845 struct thread_info
*tp
;
846 struct current_thread_cleanup
*old
= arg
;
847 restore_current_thread (old
->inferior_ptid
);
849 /* The running state of the originally selected thread may have
850 changed, so we have to recheck it here. */
852 && is_stopped (inferior_ptid
)
853 && target_has_registers
855 && target_has_memory
)
856 restore_selected_frame (old
->selected_frame_id
,
857 old
->selected_frame_level
);
861 restore_current_thread_cleanup_dtor (void *arg
)
863 struct current_thread_cleanup
*old
= arg
;
864 struct thread_info
*tp
;
865 tp
= find_thread_pid (old
->inferior_ptid
);
872 make_cleanup_restore_current_thread (void)
874 struct thread_info
*tp
;
875 struct frame_info
*frame
;
876 struct current_thread_cleanup
*old
;
878 old
= xmalloc (sizeof (struct current_thread_cleanup
));
879 old
->inferior_ptid
= inferior_ptid
;
880 old
->was_stopped
= is_stopped (inferior_ptid
);
882 && target_has_registers
884 && target_has_memory
)
885 frame
= get_selected_frame (NULL
);
889 old
->selected_frame_id
= get_frame_id (frame
);
890 old
->selected_frame_level
= frame_relative_level (frame
);
892 tp
= find_thread_pid (inferior_ptid
);
896 return make_cleanup_dtor (do_restore_current_thread_cleanup
, old
,
897 restore_current_thread_cleanup_dtor
);
900 /* Apply a GDB command to a list of threads. List syntax is a whitespace
901 seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
902 of two numbers seperated by a hyphen. Examples:
904 thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
905 thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
906 thread apply all p x/i $pc Apply x/i $pc cmd to all threads
910 thread_apply_all_command (char *cmd
, int from_tty
)
912 struct thread_info
*tp
;
913 struct cleanup
*old_chain
;
916 if (cmd
== NULL
|| *cmd
== '\000')
917 error (_("Please specify a command following the thread ID list"));
920 target_find_new_threads ();
922 old_chain
= make_cleanup_restore_current_thread ();
924 /* Save a copy of the command in case it is clobbered by
926 saved_cmd
= xstrdup (cmd
);
927 make_cleanup (xfree
, saved_cmd
);
928 for (tp
= thread_list
; tp
; tp
= tp
->next
)
929 if (thread_alive (tp
))
931 switch_to_thread (tp
->ptid
);
933 printf_filtered (_("\nThread %d (%s):\n"),
934 tp
->num
, target_tid_to_str (inferior_ptid
));
935 execute_command (cmd
, from_tty
);
936 strcpy (cmd
, saved_cmd
); /* Restore exact command used previously */
939 do_cleanups (old_chain
);
943 thread_apply_command (char *tidlist
, int from_tty
)
947 struct cleanup
*old_chain
;
950 if (tidlist
== NULL
|| *tidlist
== '\000')
951 error (_("Please specify a thread ID list"));
953 for (cmd
= tidlist
; *cmd
!= '\000' && !isalpha (*cmd
); cmd
++);
956 error (_("Please specify a command following the thread ID list"));
958 /* Save a copy of the command in case it is clobbered by
960 saved_cmd
= xstrdup (cmd
);
961 old_chain
= make_cleanup (xfree
, saved_cmd
);
962 while (tidlist
< cmd
)
964 struct thread_info
*tp
;
967 start
= strtol (tidlist
, &p
, 10);
969 error (_("Error parsing %s"), tidlist
);
972 while (*tidlist
== ' ' || *tidlist
== '\t')
975 if (*tidlist
== '-') /* Got a range of IDs? */
977 tidlist
++; /* Skip the - */
978 end
= strtol (tidlist
, &p
, 10);
980 error (_("Error parsing %s"), tidlist
);
983 while (*tidlist
== ' ' || *tidlist
== '\t')
989 make_cleanup_restore_current_thread ();
991 for (; start
<= end
; start
++)
993 tp
= find_thread_id (start
);
996 warning (_("Unknown thread %d."), start
);
997 else if (!thread_alive (tp
))
998 warning (_("Thread %d has terminated."), start
);
1001 switch_to_thread (tp
->ptid
);
1003 printf_filtered (_("\nThread %d (%s):\n"), tp
->num
,
1004 target_tid_to_str (inferior_ptid
));
1005 execute_command (cmd
, from_tty
);
1007 /* Restore exact command used previously. */
1008 strcpy (cmd
, saved_cmd
);
1013 do_cleanups (old_chain
);
1016 /* Switch to the specified thread. Will dispatch off to thread_apply_command
1017 if prefix of arg is `apply'. */
1020 thread_command (char *tidstr
, int from_tty
)
1024 if (target_has_stack
)
1026 if (is_exited (inferior_ptid
))
1027 printf_filtered (_("[Current thread is %d (%s) (exited)]\n"),
1028 pid_to_thread_id (inferior_ptid
),
1029 target_tid_to_str (inferior_ptid
));
1031 printf_filtered (_("[Current thread is %d (%s)]\n"),
1032 pid_to_thread_id (inferior_ptid
),
1033 target_tid_to_str (inferior_ptid
));
1036 error (_("No stack."));
1040 annotate_thread_changed ();
1041 gdb_thread_select (uiout
, tidstr
, NULL
);
1044 /* Print notices when new threads are attached and detached. */
1045 int print_thread_events
= 1;
1047 show_print_thread_events (struct ui_file
*file
, int from_tty
,
1048 struct cmd_list_element
*c
, const char *value
)
1050 fprintf_filtered (file
, _("\
1051 Printing of thread events is %s.\n"),
1056 do_captured_thread_select (struct ui_out
*uiout
, void *tidstr
)
1059 struct thread_info
*tp
;
1061 num
= value_as_long (parse_and_eval (tidstr
));
1063 tp
= find_thread_id (num
);
1066 error (_("Thread ID %d not known."), num
);
1068 if (!thread_alive (tp
))
1069 error (_("Thread ID %d has terminated."), num
);
1071 switch_to_thread (tp
->ptid
);
1073 ui_out_text (uiout
, "[Switching to thread ");
1074 ui_out_field_int (uiout
, "new-thread-id", pid_to_thread_id (inferior_ptid
));
1075 ui_out_text (uiout
, " (");
1076 ui_out_text (uiout
, target_tid_to_str (inferior_ptid
));
1077 ui_out_text (uiout
, ")]");
1079 /* Note that we can't reach this with an exited thread, due to the
1080 thread_alive check above. */
1081 if (tp
->state_
== THREAD_RUNNING
)
1082 ui_out_text (uiout
, "(running)\n");
1084 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
1086 /* Since the current thread may have changed, see if there is any
1087 exited thread we can now delete. */
1094 gdb_thread_select (struct ui_out
*uiout
, char *tidstr
, char **error_message
)
1096 if (catch_exceptions_with_msg (uiout
, do_captured_thread_select
, tidstr
,
1097 error_message
, RETURN_MASK_ALL
) < 0)
1102 /* Commands with a prefix of `thread'. */
1103 struct cmd_list_element
*thread_cmd_list
= NULL
;
1106 _initialize_thread (void)
1108 static struct cmd_list_element
*thread_apply_list
= NULL
;
1109 struct cmd_list_element
*c
;
1111 c
= add_info ("threads", info_threads_command
,
1112 _("IDs of currently known threads."));
1113 set_cmd_no_selected_thread_ok (c
);
1115 c
= add_prefix_cmd ("thread", class_run
, thread_command
, _("\
1116 Use this command to switch between threads.\n\
1117 The new thread ID must be currently known."),
1118 &thread_cmd_list
, "thread ", 1, &cmdlist
);
1119 set_cmd_no_selected_thread_ok (c
);
1121 c
= add_prefix_cmd ("apply", class_run
, thread_apply_command
,
1122 _("Apply a command to a list of threads."),
1123 &thread_apply_list
, "thread apply ", 1, &thread_cmd_list
);
1124 set_cmd_no_selected_thread_ok (c
);
1126 c
= add_cmd ("all", class_run
, thread_apply_all_command
,
1127 _("Apply a command to all threads."), &thread_apply_list
);
1128 set_cmd_no_selected_thread_ok (c
);
1131 add_com_alias ("t", "thread", class_run
, 1);
1133 add_setshow_boolean_cmd ("thread-events", no_class
,
1134 &print_thread_events
, _("\
1135 Set printing of thread events (such as thread start and exit)."), _("\
1136 Show printing of thread events (such as thread start and exit)."), NULL
,
1138 show_print_thread_events
,
1139 &setprintlist
, &showprintlist
);