gdb/gdbthread.h

   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 /* For bpstat */
  29 #include "breakpoint.h"
  30
  31 struct thread_info
  32 {
  33   struct thread_info *next;
  34   ptid_t ptid;                  /* "Actual process id";
  35                                     In fact, this may be overloaded with
  36                                     kernel thread id, etc.  */
  37   int num;                      /* Convenient handle (GDB thread id) */
  38   /* State from wait_for_inferior */
  39   CORE_ADDR prev_pc;
  40   CORE_ADDR prev_func_start;
  41   char *prev_func_name;
  42   struct breakpoint *step_resume_breakpoint;
  43   struct breakpoint *through_sigtramp_breakpoint;
  44   CORE_ADDR step_range_start;
  45   CORE_ADDR step_range_end;
  46   CORE_ADDR step_frame_address;
  47   CORE_ADDR step_sp;
  48   int current_line;
  49   struct symtab *current_symtab;
  50   int trap_expected;
  51   int handling_longjmp;
  52   int another_trap;
  53
  54   /* This is set TRUE when a catchpoint of a shared library event
  55      triggers.  Since we don't wish to leave the inferior in the
  56      solib hook when we report the event, we step the inferior
  57      back to user code before stopping and reporting the event.  */
  58   int stepping_through_solib_after_catch;
  59
  60   /* When stepping_through_solib_after_catch is TRUE, this is a
  61      list of the catchpoints that should be reported as triggering
  62      when we finally do stop stepping.  */
  63   bpstat stepping_through_solib_catchpoints;
  64
  65   /* This is set to TRUE when this thread is in a signal handler
  66      trampoline and we're single-stepping through it.  */
  67   int stepping_through_sigtramp;
  68
  69   /* Private data used by the target vector implementation.  */
  70   struct private_thread_info *private;
  71 };
  72
  73 /* Create an empty thread list, or empty the existing one.  */
  74 extern void init_thread_list (void);
  75
  76 /* Add a thread to the thread list.
  77    Note that add_thread now returns the handle of the new thread,
  78    so that the caller may initialize the private thread data.  */
  79 extern struct thread_info *add_thread (ptid_t ptid);
  80
  81 /* Delete an existing thread list entry.  */
  82 extern void delete_thread (ptid_t);
  83
  84 /* Delete a step_resume_breakpoint from the thread database. */
  85 extern void delete_step_resume_breakpoint (void *);
  86
  87 /* Translate the integer thread id (GDB's homegrown id, not the system's)
  88    into a "pid" (which may be overloaded with extra thread information).  */
  89 extern ptid_t thread_id_to_pid (int);
  90
  91 /* Translate a 'pid' (which may be overloaded with extra thread information)
  92    into the integer thread id (GDB's homegrown id, not the system's).  */
  93 extern int pid_to_thread_id (ptid_t ptid);
  94
  95 /* Boolean test for an already-known pid (which may be overloaded with
  96    extra thread information).  */
  97 extern int in_thread_list (ptid_t ptid);
  98
  99 /* Boolean test for an already-known thread id (GDB's homegrown id,
 100    not the system's).  */
 101 extern int valid_thread_id (int thread);
 102
 103 /* Search function to lookup a thread by 'pid'.  */
 104 extern struct thread_info *find_thread_pid (ptid_t ptid);
 105
 106 /* Iterator function to call a user-provided callback function
 107    once for each known thread.  */
 108 typedef int (*thread_callback_func) (struct thread_info *, void *);
 109 extern struct thread_info *iterate_over_threads (thread_callback_func, void *);
 110
 111 /* infrun context switch: save the debugger state for the given thread.  */
 112 extern void save_infrun_state (ptid_t ptid,
 113                                CORE_ADDR prev_pc,
 114                                CORE_ADDR prev_func_start,
 115                                char     *prev_func_name,
 116                                int       trap_expected,
 117                                struct breakpoint *step_resume_breakpoint,
 118                                struct breakpoint *through_sigtramp_breakpoint,
 119                                CORE_ADDR step_range_start,
 120                                CORE_ADDR step_range_end,
 121                                CORE_ADDR step_frame_address,
 122                                int       handling_longjmp,
 123                                int       another_trap,
 124                                int       stepping_through_solib_after_catch,
 125                                bpstat    stepping_through_solib_catchpoints,
 126                                int       stepping_through_sigtramp,
 127                                int       current_line,
 128                                struct symtab *current_symtab,
 129                                CORE_ADDR step_sp);
 130
 131 /* infrun context switch: load the debugger state previously saved
 132    for the given thread.  */
 133 extern void load_infrun_state (ptid_t ptid,
 134                                CORE_ADDR *prev_pc,
 135                                CORE_ADDR *prev_func_start,
 136                                char     **prev_func_name,
 137                                int       *trap_expected,
 138                                struct breakpoint **step_resume_breakpoint,
 139                                struct breakpoint **through_sigtramp_breakpoint,
 140                                CORE_ADDR *step_range_start,
 141                                CORE_ADDR *step_range_end,
 142                                CORE_ADDR *step_frame_address,
 143                                int       *handling_longjmp,
 144                                int       *another_trap,
 145                                int       *stepping_through_solib_affter_catch,
 146                                bpstat    *stepping_through_solib_catchpoints,
 147                                int       *stepping_through_sigtramp,
 148                                int       *current_line,
 149                                struct symtab **current_symtab,
 150                                CORE_ADDR *step_sp);
 151
 152 /* Commands with a prefix of `thread'.  */
 153 extern struct cmd_list_element *thread_cmd_list;
 154
 155 #endif /* GDBTHREAD_H */