1 /* Multi-process/thread control defs for GDB, the GNU debugger. 2 Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1997, 1998, 1999, 3 2000 4 Free Software Foundation, Inc. 5 Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. 6 7 8 This file is part of GDB. 9 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 2 of the License, or 13 (at your option) any later version. 14 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. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 59 Temple Place - Suite 330, 23 Boston, MA 02111-1307, USA. */ 24 25 #ifndef GDBTHREAD_H 26 #define GDBTHREAD_H 27 28 struct breakpoint; 29 struct frame_id; 30 struct symtab; 31 32 /* For bpstat */ 33 #include "breakpoint.h" 34 35 /* For struct frame_id. */ 36 #include "frame.h" 37 38 struct thread_info 39 { 40 struct thread_info *next; 41 ptid_t ptid; /* "Actual process id"; 42 In fact, this may be overloaded with 43 kernel thread id, etc. */ 44 int num; /* Convenient handle (GDB thread id) */ 45 /* State from wait_for_inferior */ 46 CORE_ADDR prev_pc; 47 struct breakpoint *step_resume_breakpoint; 48 struct breakpoint *through_sigtramp_breakpoint; 49 CORE_ADDR step_range_start; 50 CORE_ADDR step_range_end; 51 struct frame_id step_frame_id; 52 CORE_ADDR step_sp; 53 int current_line; 54 struct symtab *current_symtab; 55 int trap_expected; 56 int handling_longjmp; 57 int another_trap; 58 59 /* This is set TRUE when a catchpoint of a shared library event 60 triggers. Since we don't wish to leave the inferior in the 61 solib hook when we report the event, we step the inferior 62 back to user code before stopping and reporting the event. */ 63 int stepping_through_solib_after_catch; 64 65 /* When stepping_through_solib_after_catch is TRUE, this is a 66 list of the catchpoints that should be reported as triggering 67 when we finally do stop stepping. */ 68 bpstat stepping_through_solib_catchpoints; 69 70 /* This is set to TRUE when this thread is in a signal handler 71 trampoline and we're single-stepping through it. */ 72 int stepping_through_sigtramp; 73 74 /* Private data used by the target vector implementation. */ 75 struct private_thread_info *private; 76 }; 77 78 /* Create an empty thread list, or empty the existing one. */ 79 extern void init_thread_list (void); 80 81 /* Add a thread to the thread list. 82 Note that add_thread now returns the handle of the new thread, 83 so that the caller may initialize the private thread data. */ 84 extern struct thread_info *add_thread (ptid_t ptid); 85 86 /* Delete an existing thread list entry. */ 87 extern void delete_thread (ptid_t); 88 89 /* Delete a step_resume_breakpoint from the thread database. */ 90 extern void delete_step_resume_breakpoint (void *); 91 92 /* Translate the integer thread id (GDB's homegrown id, not the system's) 93 into a "pid" (which may be overloaded with extra thread information). */ 94 extern ptid_t thread_id_to_pid (int); 95 96 /* Translate a 'pid' (which may be overloaded with extra thread information) 97 into the integer thread id (GDB's homegrown id, not the system's). */ 98 extern int pid_to_thread_id (ptid_t ptid); 99 100 /* Boolean test for an already-known pid (which may be overloaded with 101 extra thread information). */ 102 extern int in_thread_list (ptid_t ptid); 103 104 /* Boolean test for an already-known thread id (GDB's homegrown id, 105 not the system's). */ 106 extern int valid_thread_id (int thread); 107 108 /* Search function to lookup a thread by 'pid'. */ 109 extern struct thread_info *find_thread_pid (ptid_t ptid); 110 111 /* Iterator function to call a user-provided callback function 112 once for each known thread. */ 113 typedef int (*thread_callback_func) (struct thread_info *, void *); 114 extern struct thread_info *iterate_over_threads (thread_callback_func, void *); 115 116 /* infrun context switch: save the debugger state for the given thread. */ 117 extern void save_infrun_state (ptid_t ptid, 118 CORE_ADDR prev_pc, 119 int trap_expected, 120 struct breakpoint *step_resume_breakpoint, 121 struct breakpoint *through_sigtramp_breakpoint, 122 CORE_ADDR step_range_start, 123 CORE_ADDR step_range_end, 124 const struct frame_id *step_frame_id, 125 int handling_longjmp, 126 int another_trap, 127 int stepping_through_solib_after_catch, 128 bpstat stepping_through_solib_catchpoints, 129 int stepping_through_sigtramp, 130 int current_line, 131 struct symtab *current_symtab, 132 CORE_ADDR step_sp); 133 134 /* infrun context switch: load the debugger state previously saved 135 for the given thread. */ 136 extern void load_infrun_state (ptid_t ptid, 137 CORE_ADDR *prev_pc, 138 int *trap_expected, 139 struct breakpoint **step_resume_breakpoint, 140 struct breakpoint **through_sigtramp_breakpoint, 141 CORE_ADDR *step_range_start, 142 CORE_ADDR *step_range_end, 143 struct frame_id *step_frame_id, 144 int *handling_longjmp, 145 int *another_trap, 146 int *stepping_through_solib_affter_catch, 147 bpstat *stepping_through_solib_catchpoints, 148 int *stepping_through_sigtramp, 149 int *current_line, 150 struct symtab **current_symtab, 151 CORE_ADDR *step_sp); 152 153 /* Commands with a prefix of `thread'. */ 154 extern struct cmd_list_element *thread_cmd_list; 155 156 #endif /* GDBTHREAD_H */ 157