gdb/gdbthread.h

   1 /* Multi-process/thread control defs for GDB, the GNU debugger.
   2    Copyright 1987, 88, 89, 90, 91, 92, 1993, 1998
   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, Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef GDBTHREAD_H
  24 #define GDBTHREAD_H
  25
  26 /* For bpstat */
  27 #include "breakpoint.h"
  28
  29 extern void init_thread_list PARAMS ((void));
  30
  31 extern void add_thread PARAMS ((int pid));
  32
  33 extern void delete_thread PARAMS ((int));
  34
  35 extern int thread_id_to_pid PARAMS ((int));
  36
  37 extern int in_thread_list PARAMS ((int pid));
  38
  39 extern int pid_to_thread_id PARAMS ((int pid));
  40
  41 extern int valid_thread_id PARAMS ((int thread));
  42
  43 extern void load_infrun_state PARAMS ((int, CORE_ADDR *, CORE_ADDR *, char **,
  44                                        int *, struct breakpoint **,
  45                                        struct breakpoint **, CORE_ADDR *,
  46                                        CORE_ADDR *, CORE_ADDR *, int *, int *,
  47                                        int *, bpstat *, int *));
  48
  49 extern void save_infrun_state PARAMS ((int, CORE_ADDR, CORE_ADDR, char *,
  50                                        int, struct breakpoint *,
  51                                        struct breakpoint *, CORE_ADDR,
  52                                        CORE_ADDR, CORE_ADDR, int, int,
  53                                        int, bpstat, int));
  54
  55 /* Commands with a prefix of `thread'.  */
  56 extern struct cmd_list_element *thread_cmd_list;
  57
  58 /* Support for external (remote) systems with threads (processes) */
  59 /* For example real time operating systems */
  60
  61 #define OPAQUETHREADBYTES 8
  62 /* a 64 bit opaque identifier */
  63 typedef unsigned char threadref[OPAQUETHREADBYTES] ;
  64 /* WARNING: This threadref data structure comes from the remote O.S., libstub
  65    protocol encoding, and remote.c. it is not particularly changable */
  66
  67 /* Right now, the internal structure is int. We want it to be bigger.
  68    Plan to fix this.
  69    */
  70 typedef int gdb_threadref ; /* internal GDB thread reference */
  71
  72 /*  gdb_ext_thread_info is an internal GDB data structure which is
  73    equivalint to the reply of the remote threadinfo packet */
  74
  75 struct gdb_ext_thread_info
  76 {
  77   threadref threadid ; /* External form of thread reference */
  78   int active ;         /* Has state interesting to GDB? , regs, stack */
  79   char display[256] ;  /* Brief state display, name, blocked/syspended */
  80   char shortname[32] ; /* To be used to name threads */
  81   char more_display[256] ; /* Long info, statistics, queue depth, whatever */
  82 } ;
  83
  84 /* The volume of remote transfers can be limited by submitting
  85    a mask containing bits specifying the desired information.
  86    Use a union of these values as the 'selection' parameter to
  87    get_thread_info. FIXME: Make these TAG names more thread specific.
  88    */
  89 #define TAG_THREADID 1
  90 #define TAG_EXISTS 2
  91 #define TAG_DISPLAY 4
  92 #define TAG_THREADNAME 8
  93 #define TAG_MOREDISPLAY 16
  94
  95 /* Always initialize an instance of this structure using run time assignments */
  96 /* Because we are likely to add entrtries to it. */
  97 /* Alternatly, WE COULD ADD THESE TO THE TARGET VECTOR */
  98
  99 struct target_thread_vector
 100 {
 101   int (*find_new_threads)PARAMS((void)) ;
 102   int (*get_thread_info) PARAMS((
 103                          gdb_threadref * ref,
 104                          int selection,
 105                          struct gdb_ext_thread_info * info
 106                          )) ;
 107   /* to_thread_alive - Already in the target vector */
 108   /* to_switch_thread - Done via select frame */
 109 } ;
 110
 111 extern void bind_target_thread_vector PARAMS((struct target_thread_vector * vec)) ;
 112
 113 extern struct target_thread_vector * unbind_target_thread_vector PARAMS ((void)) ;
 114
 115 extern int target_get_thread_info PARAMS((
 116                                   gdb_threadref * ref,
 117                                   int selection,
 118                                   struct gdb_ext_thread_info * info)) ;
 119
 120
 121 #endif  /* GDBTHREAD_H */