1 /* Multi-process/thread control defs for GDB, the GNU debugger.
2 Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1997, 1998, 1999,
3 2000, 2007, 2008 Free Software Foundation, Inc.
4 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
7 This file is part of GDB.
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 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "breakpoint.h"
34 struct thread_info
*next
;
35 ptid_t ptid
; /* "Actual process id";
36 In fact, this may be overloaded with
37 kernel thread id, etc. */
38 int num
; /* Convenient handle (GDB thread id) */
40 /* Non-zero means the thread is executing. Note: this is different
41 from saying that there is an active target and we are stopped at
42 a breakpoint, for instance. This is a real indicator whether the
43 thread is off and running. */
44 /* This field is internal to thread.c. Never access it directly,
45 use is_executing instead. */
48 /* Frontend view of the running state. Note that this is different
49 from EXECUTING. When the thread is stopped internally while
50 handling an internal event, like a software single-step
51 breakpoint, executing will be false, but running will still be
52 true. As a possible future extension, this could turn into
53 enum { stopped, stepping, finishing, until(ling), ... } */
54 /* This field is internal to thread.c. Never access it directly,
55 use is_running instead. */
58 /* State from wait_for_inferior */
60 struct breakpoint
*step_resume_breakpoint
;
61 CORE_ADDR step_range_start
;
62 CORE_ADDR step_range_end
;
63 struct frame_id step_frame_id
;
65 struct symtab
*current_symtab
;
67 int stepping_over_breakpoint
;
69 /* This is set TRUE when a catchpoint of a shared library event
70 triggers. Since we don't wish to leave the inferior in the
71 solib hook when we report the event, we step the inferior
72 back to user code before stopping and reporting the event. */
73 int stepping_through_solib_after_catch
;
75 /* When stepping_through_solib_after_catch is TRUE, this is a
76 list of the catchpoints that should be reported as triggering
77 when we finally do stop stepping. */
78 bpstat stepping_through_solib_catchpoints
;
80 /* The below are only per-thread in non-stop mode. */
81 /* Per-thread command support. */
82 struct continuation
*continuations
;
83 struct continuation
*intermediate_continuations
;
84 int proceed_to_finish
;
85 enum step_over_calls_kind step_over_calls
;
89 enum target_signal stop_signal
;
90 /* Used in continue_command to set the proceed count of the
91 breakpoint the thread stopped at. */
94 /* Private data used by the target vector implementation. */
95 struct private_thread_info
*private;
98 /* Create an empty thread list, or empty the existing one. */
99 extern void init_thread_list (void);
101 /* Add a thread to the thread list, print a message
102 that a new thread is found, and return the pointer to
103 the new thread. Caller my use this pointer to
104 initialize the private thread data. */
105 extern struct thread_info
*add_thread (ptid_t ptid
);
107 /* Same as add_thread, but does not print a message
109 extern struct thread_info
*add_thread_silent (ptid_t ptid
);
111 /* Same as add_thread, and sets the private info. */
112 extern struct thread_info
*add_thread_with_info (ptid_t ptid
,
113 struct private_thread_info
*);
115 /* Delete an existing thread list entry. */
116 extern void delete_thread (ptid_t
);
118 /* Delete an existing thread list entry, and be quiet about it. Used
119 after the process this thread having belonged to having already
120 exited, for example. */
121 extern void delete_thread_silent (ptid_t
);
123 /* Delete a step_resume_breakpoint from the thread database. */
124 extern void delete_step_resume_breakpoint (void *);
126 /* Translate the integer thread id (GDB's homegrown id, not the system's)
127 into a "pid" (which may be overloaded with extra thread information). */
128 extern ptid_t
thread_id_to_pid (int);
130 /* Translate a 'pid' (which may be overloaded with extra thread information)
131 into the integer thread id (GDB's homegrown id, not the system's). */
132 extern int pid_to_thread_id (ptid_t ptid
);
134 /* Boolean test for an already-known pid (which may be overloaded with
135 extra thread information). */
136 extern int in_thread_list (ptid_t ptid
);
138 /* Boolean test for an already-known thread id (GDB's homegrown id,
139 not the system's). */
140 extern int valid_thread_id (int thread
);
142 /* Search function to lookup a thread by 'pid'. */
143 extern struct thread_info
*find_thread_pid (ptid_t ptid
);
145 /* Iterator function to call a user-provided callback function
146 once for each known thread. */
147 typedef int (*thread_callback_func
) (struct thread_info
*, void *);
148 extern struct thread_info
*iterate_over_threads (thread_callback_func
, void *);
150 extern int thread_count (void);
152 /* infrun context switch: save the debugger state for the given thread. */
153 extern void save_infrun_state (ptid_t ptid
,
156 struct breakpoint
*step_resume_breakpoint
,
157 CORE_ADDR step_range_start
,
158 CORE_ADDR step_range_end
,
159 const struct frame_id
*step_frame_id
,
161 int stepping_through_solib_after_catch
,
162 bpstat stepping_through_solib_catchpoints
,
164 struct symtab
*current_symtab
,
165 struct continuation
*continuations
,
166 struct continuation
*intermediate_continuations
,
167 int proceed_to_finish
,
168 enum step_over_calls_kind step_over_calls
,
171 enum target_signal stop_signal
,
174 /* infrun context switch: load the debugger state previously saved
175 for the given thread. */
176 extern void load_infrun_state (ptid_t ptid
,
179 struct breakpoint
**step_resume_breakpoint
,
180 CORE_ADDR
*step_range_start
,
181 CORE_ADDR
*step_range_end
,
182 struct frame_id
*step_frame_id
,
184 int *stepping_through_solib_after_catch
,
185 bpstat
*stepping_through_solib_catchpoints
,
187 struct symtab
**current_symtab
,
188 struct continuation
**continuations
,
189 struct continuation
**intermediate_continuations
,
190 int *proceed_to_finish
,
191 enum step_over_calls_kind
*step_over_calls
,
194 enum target_signal
*stop_signal
,
195 bpstat
*stop_bpstat
);
197 /* Switch from one thread to another. */
198 extern void switch_to_thread (ptid_t ptid
);
200 /* Marks thread PTID is running, or stopped.
201 If PIDGET (PTID) is -1, marks all threads. */
202 extern void set_running (ptid_t ptid
, int running
);
204 /* Reports if thread PTID is known to be running right now. */
205 extern int is_running (ptid_t ptid
);
207 /* Reports if any thread is known to be running right now. */
208 extern int any_running (void);
210 /* Marks thread PTID as executing, or as stopped.
211 If PIDGET (PTID) is -1, marks all threads. */
212 extern void set_executing (ptid_t ptid
, int executing
);
214 /* Reports if thread PTID is executing. */
215 extern int is_executing (ptid_t ptid
);
217 /* Commands with a prefix of `thread'. */
218 extern struct cmd_list_element
*thread_cmd_list
;
220 /* Print notices on thread events (attach, detach, etc.), set with
221 `set print thread-events'. */
222 extern int print_thread_events
;
224 extern void print_thread_info (struct ui_out
*uiout
, int thread
);
226 extern struct cleanup
*make_cleanup_restore_current_thread (ptid_t
,
230 #endif /* GDBTHREAD_H */