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/>. */
30 #include "breakpoint.h"
32 /* For struct frame_id. */
39 struct thread_info *next;
40 ptid_t ptid; /* "Actual process id";
41 In fact, this may be overloaded with
42 kernel thread id, etc. */
43 int num; /* Convenient handle (GDB thread id) */
44 /* State from wait_for_inferior */
46 struct breakpoint *step_resume_breakpoint;
47 CORE_ADDR step_range_start;
48 CORE_ADDR step_range_end;
49 struct frame_id step_frame_id;
51 struct symtab *current_symtab;
53 int stepping_over_breakpoint;
55 /* This is set TRUE when a catchpoint of a shared library event
56 triggers. Since we don't wish to leave the inferior in the
57 solib hook when we report the event, we step the inferior
58 back to user code before stopping and reporting the event. */
59 int stepping_through_solib_after_catch;
61 /* When stepping_through_solib_after_catch is TRUE, this is a
62 list of the catchpoints that should be reported as triggering
63 when we finally do stop stepping. */
64 bpstat stepping_through_solib_catchpoints;
66 /* This field is internal for thread.c. Never access it directly,
67 use is_running instead. */
70 /* Private data used by the target vector implementation. */
71 struct private_thread_info *private;
74 /* Create an empty thread list, or empty the existing one. */
75 extern void init_thread_list (void);
77 /* Add a thread to the thread list, print a message
78 that a new thread is found, and return the pointer to
79 the new thread. Caller my use this pointer to
80 initialize the private thread data. */
81 extern struct thread_info *add_thread (ptid_t ptid);
83 /* Same as add_thread, but does not print a message
85 extern struct thread_info *add_thread_silent (ptid_t ptid);
87 /* Same as add_thread, and sets the private info. */
88 extern struct thread_info *add_thread_with_info (ptid_t ptid,
89 struct private_thread_info *);
91 /* Delete an existing thread list entry. */
92 extern void delete_thread (ptid_t);
94 /* Delete an existing thread list entry, and be quiet about it. Used
95 after the process this thread having belonged to having already
96 exited, for example. */
97 extern void delete_thread_silent (ptid_t);
99 /* Delete a step_resume_breakpoint from the thread database. */
100 extern void delete_step_resume_breakpoint (void *);
102 /* Translate the integer thread id (GDB's homegrown id, not the system's)
103 into a "pid" (which may be overloaded with extra thread information). */
104 extern ptid_t thread_id_to_pid (int);
106 /* Translate a 'pid' (which may be overloaded with extra thread information)
107 into the integer thread id (GDB's homegrown id, not the system's). */
108 extern int pid_to_thread_id (ptid_t ptid);
110 /* Boolean test for an already-known pid (which may be overloaded with
111 extra thread information). */
112 extern int in_thread_list (ptid_t ptid);
114 /* Boolean test for an already-known thread id (GDB's homegrown id,
115 not the system's). */
116 extern int valid_thread_id (int thread);
118 /* Search function to lookup a thread by 'pid'. */
119 extern struct thread_info *find_thread_pid (ptid_t ptid);
121 /* Iterator function to call a user-provided callback function
122 once for each known thread. */
123 typedef int (*thread_callback_func) (struct thread_info *, void *);
124 extern struct thread_info *iterate_over_threads (thread_callback_func, void *);
126 extern int thread_count (void);
128 /* infrun context switch: save the debugger state for the given thread. */
129 extern void save_infrun_state (ptid_t ptid,
132 struct breakpoint *step_resume_breakpoint,
133 CORE_ADDR step_range_start,
134 CORE_ADDR step_range_end,
135 const struct frame_id *step_frame_id,
137 int stepping_through_solib_after_catch,
138 bpstat stepping_through_solib_catchpoints,
140 struct symtab *current_symtab);
142 /* infrun context switch: load the debugger state previously saved
143 for the given thread. */
144 extern void load_infrun_state (ptid_t ptid,
147 struct breakpoint **step_resume_breakpoint,
148 CORE_ADDR *step_range_start,
149 CORE_ADDR *step_range_end,
150 struct frame_id *step_frame_id,
152 int *stepping_through_solib_affter_catch,
153 bpstat *stepping_through_solib_catchpoints,
155 struct symtab **current_symtab);
157 /* Switch from one thread to another. */
158 extern void switch_to_thread (ptid_t ptid);
160 /* Marks thread PTID is running, or stopped.
161 If PIDGET (PTID) is -1, marks all threads. */
162 extern void set_running (ptid_t ptid, int running);
164 /* Reports if thread PTID is know to be running right now. */
165 extern int is_running (ptid_t ptid);
167 /* Commands with a prefix of `thread'. */
168 extern struct cmd_list_element *thread_cmd_list;
170 /* Print notices on thread events (attach, detach, etc.), set with
171 `set print thread-events'. */
172 extern int print_thread_events;
174 extern void print_thread_info (struct ui_out *uiout, int thread);
176 extern struct cleanup *make_cleanup_restore_current_thread (ptid_t,
180 #endif /* GDBTHREAD_H */