| 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. |
| 5 | |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 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. |
| 13 | |
| 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. |
| 18 | |
| 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/>. */ |
| 21 | |
| 22 | #ifndef GDBTHREAD_H |
| 23 | #define GDBTHREAD_H |
| 24 | |
| 25 | struct breakpoint; |
| 26 | struct frame_id; |
| 27 | struct symtab; |
| 28 | |
| 29 | /* For bpstat */ |
| 30 | #include "breakpoint.h" |
| 31 | |
| 32 | /* For struct frame_id. */ |
| 33 | #include "frame.h" |
| 34 | |
| 35 | #include "ui-out.h" |
| 36 | |
| 37 | struct thread_info |
| 38 | { |
| 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 */ |
| 45 | CORE_ADDR prev_pc; |
| 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; |
| 50 | int current_line; |
| 51 | struct symtab *current_symtab; |
| 52 | int trap_expected; |
| 53 | int stepping_over_breakpoint; |
| 54 | |
| 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; |
| 60 | |
| 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; |
| 65 | |
| 66 | /* This field is internal for thread.c. Never access it directly, |
| 67 | use is_running instead. */ |
| 68 | int running_; |
| 69 | |
| 70 | /* Private data used by the target vector implementation. */ |
| 71 | struct private_thread_info *private; |
| 72 | }; |
| 73 | |
| 74 | /* Create an empty thread list, or empty the existing one. */ |
| 75 | extern void init_thread_list (void); |
| 76 | |
| 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); |
| 82 | |
| 83 | /* Same as add_thread, but does not print a message |
| 84 | about new thread. */ |
| 85 | extern struct thread_info *add_thread_silent (ptid_t ptid); |
| 86 | |
| 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 *); |
| 90 | |
| 91 | /* Delete an existing thread list entry. */ |
| 92 | extern void delete_thread (ptid_t); |
| 93 | |
| 94 | /* Delete a step_resume_breakpoint from the thread database. */ |
| 95 | extern void delete_step_resume_breakpoint (void *); |
| 96 | |
| 97 | /* Translate the integer thread id (GDB's homegrown id, not the system's) |
| 98 | into a "pid" (which may be overloaded with extra thread information). */ |
| 99 | extern ptid_t thread_id_to_pid (int); |
| 100 | |
| 101 | /* Translate a 'pid' (which may be overloaded with extra thread information) |
| 102 | into the integer thread id (GDB's homegrown id, not the system's). */ |
| 103 | extern int pid_to_thread_id (ptid_t ptid); |
| 104 | |
| 105 | /* Boolean test for an already-known pid (which may be overloaded with |
| 106 | extra thread information). */ |
| 107 | extern int in_thread_list (ptid_t ptid); |
| 108 | |
| 109 | /* Boolean test for an already-known thread id (GDB's homegrown id, |
| 110 | not the system's). */ |
| 111 | extern int valid_thread_id (int thread); |
| 112 | |
| 113 | /* Search function to lookup a thread by 'pid'. */ |
| 114 | extern struct thread_info *find_thread_pid (ptid_t ptid); |
| 115 | |
| 116 | /* Iterator function to call a user-provided callback function |
| 117 | once for each known thread. */ |
| 118 | typedef int (*thread_callback_func) (struct thread_info *, void *); |
| 119 | extern struct thread_info *iterate_over_threads (thread_callback_func, void *); |
| 120 | |
| 121 | /* infrun context switch: save the debugger state for the given thread. */ |
| 122 | extern void save_infrun_state (ptid_t ptid, |
| 123 | CORE_ADDR prev_pc, |
| 124 | int trap_expected, |
| 125 | struct breakpoint *step_resume_breakpoint, |
| 126 | CORE_ADDR step_range_start, |
| 127 | CORE_ADDR step_range_end, |
| 128 | const struct frame_id *step_frame_id, |
| 129 | int another_trap, |
| 130 | int stepping_through_solib_after_catch, |
| 131 | bpstat stepping_through_solib_catchpoints, |
| 132 | int current_line, |
| 133 | struct symtab *current_symtab); |
| 134 | |
| 135 | /* infrun context switch: load the debugger state previously saved |
| 136 | for the given thread. */ |
| 137 | extern void load_infrun_state (ptid_t ptid, |
| 138 | CORE_ADDR *prev_pc, |
| 139 | int *trap_expected, |
| 140 | struct breakpoint **step_resume_breakpoint, |
| 141 | CORE_ADDR *step_range_start, |
| 142 | CORE_ADDR *step_range_end, |
| 143 | struct frame_id *step_frame_id, |
| 144 | int *another_trap, |
| 145 | int *stepping_through_solib_affter_catch, |
| 146 | bpstat *stepping_through_solib_catchpoints, |
| 147 | int *current_line, |
| 148 | struct symtab **current_symtab); |
| 149 | |
| 150 | /* Switch from one thread to another. */ |
| 151 | extern void switch_to_thread (ptid_t ptid); |
| 152 | |
| 153 | /* Marks thread PTID is running, or stopped. |
| 154 | If PIDGET (PTID) is -1, marks all threads. */ |
| 155 | extern void set_running (ptid_t ptid, int running); |
| 156 | |
| 157 | /* Reports if thread PTID is know to be running right now. */ |
| 158 | extern int is_running (ptid_t ptid); |
| 159 | |
| 160 | /* Commands with a prefix of `thread'. */ |
| 161 | extern struct cmd_list_element *thread_cmd_list; |
| 162 | |
| 163 | /* Print notices on thread events (attach, detach, etc.), set with |
| 164 | `set print thread-events'. */ |
| 165 | extern int print_thread_events; |
| 166 | |
| 167 | extern void print_thread_info (struct ui_out *uiout, int thread); |
| 168 | |
| 169 | extern struct cleanup *make_cleanup_restore_current_thread (ptid_t, |
| 170 | struct frame_id); |
| 171 | |
| 172 | |
| 173 | #endif /* GDBTHREAD_H */ |