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c906108c 1/* Multi-process/thread control defs for GDB, the GNU debugger.
197e01b6 2 Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1997, 1998, 1999,
6aba47ca 3 2000, 2007 Free Software Foundation, Inc.
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4 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
5
c906108c 6
c5aa993b 7 This file is part of GDB.
c906108c 8
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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.
c906108c 13
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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.
c906108c 18
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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
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21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
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23
24#ifndef GDBTHREAD_H
25#define GDBTHREAD_H
26
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27struct breakpoint;
28struct frame_id;
29struct symtab;
30
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31/* For bpstat */
32#include "breakpoint.h"
33
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34/* For struct frame_id. */
35#include "frame.h"
36
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37struct thread_info
38{
39 struct thread_info *next;
39f77062 40 ptid_t ptid; /* "Actual process id";
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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 */
45 CORE_ADDR prev_pc;
0d06e24b 46 struct breakpoint *step_resume_breakpoint;
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47 CORE_ADDR step_range_start;
48 CORE_ADDR step_range_end;
aa0cd9c1 49 struct frame_id step_frame_id;
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50 int current_line;
51 struct symtab *current_symtab;
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52 int trap_expected;
53 int handling_longjmp;
54 int another_trap;
55
56 /* This is set TRUE when a catchpoint of a shared library event
57 triggers. Since we don't wish to leave the inferior in the
58 solib hook when we report the event, we step the inferior
59 back to user code before stopping and reporting the event. */
60 int stepping_through_solib_after_catch;
61
62 /* When stepping_through_solib_after_catch is TRUE, this is a
63 list of the catchpoints that should be reported as triggering
64 when we finally do stop stepping. */
65 bpstat stepping_through_solib_catchpoints;
66
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67 /* Private data used by the target vector implementation. */
68 struct private_thread_info *private;
69};
70
71/* Create an empty thread list, or empty the existing one. */
72extern void init_thread_list (void);
73
74/* Add a thread to the thread list.
75 Note that add_thread now returns the handle of the new thread,
76 so that the caller may initialize the private thread data. */
39f77062 77extern struct thread_info *add_thread (ptid_t ptid);
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78
79/* Delete an existing thread list entry. */
39f77062 80extern void delete_thread (ptid_t);
0d06e24b 81
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82/* Delete a step_resume_breakpoint from the thread database. */
83extern void delete_step_resume_breakpoint (void *);
84
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85/* Translate the integer thread id (GDB's homegrown id, not the system's)
86 into a "pid" (which may be overloaded with extra thread information). */
39f77062 87extern ptid_t thread_id_to_pid (int);
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88
89/* Translate a 'pid' (which may be overloaded with extra thread information)
90 into the integer thread id (GDB's homegrown id, not the system's). */
39f77062 91extern int pid_to_thread_id (ptid_t ptid);
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92
93/* Boolean test for an already-known pid (which may be overloaded with
94 extra thread information). */
39f77062 95extern int in_thread_list (ptid_t ptid);
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96
97/* Boolean test for an already-known thread id (GDB's homegrown id,
98 not the system's). */
99extern int valid_thread_id (int thread);
100
101/* Search function to lookup a thread by 'pid'. */
39f77062 102extern struct thread_info *find_thread_pid (ptid_t ptid);
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103
104/* Iterator function to call a user-provided callback function
105 once for each known thread. */
106typedef int (*thread_callback_func) (struct thread_info *, void *);
107extern struct thread_info *iterate_over_threads (thread_callback_func, void *);
108
109/* infrun context switch: save the debugger state for the given thread. */
39f77062 110extern void save_infrun_state (ptid_t ptid,
0d06e24b 111 CORE_ADDR prev_pc,
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112 int trap_expected,
113 struct breakpoint *step_resume_breakpoint,
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114 CORE_ADDR step_range_start,
115 CORE_ADDR step_range_end,
aa0cd9c1 116 const struct frame_id *step_frame_id,
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117 int handling_longjmp,
118 int another_trap,
119 int stepping_through_solib_after_catch,
120 bpstat stepping_through_solib_catchpoints,
6c0d3f6a 121 int current_line,
f2c9ca08 122 struct symtab *current_symtab);
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123
124/* infrun context switch: load the debugger state previously saved
125 for the given thread. */
39f77062 126extern void load_infrun_state (ptid_t ptid,
0d06e24b 127 CORE_ADDR *prev_pc,
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128 int *trap_expected,
129 struct breakpoint **step_resume_breakpoint,
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130 CORE_ADDR *step_range_start,
131 CORE_ADDR *step_range_end,
aa0cd9c1 132 struct frame_id *step_frame_id,
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133 int *handling_longjmp,
134 int *another_trap,
135 int *stepping_through_solib_affter_catch,
136 bpstat *stepping_through_solib_catchpoints,
6c0d3f6a 137 int *current_line,
f2c9ca08 138 struct symtab **current_symtab);
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139
140/* Commands with a prefix of `thread'. */
141extern struct cmd_list_element *thread_cmd_list;
142
c5aa993b 143#endif /* GDBTHREAD_H */