gdb/gdbthread.h

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