gdb/gdbserver/inferiors.h

   1 /* Inferior process information for the remote server for GDB.
   2    Copyright (C) 1993-2015 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef INFERIORS_H
  20 #define INFERIORS_H
  21
  22 /* Generic information for tracking a list of ``inferiors'' - threads,
  23    processes, etc.  */
  24 struct inferior_list
  25 {
  26   struct inferior_list_entry *head;
  27   struct inferior_list_entry *tail;
  28 };
  29 struct inferior_list_entry
  30 {
  31   ptid_t id;
  32   struct inferior_list_entry *next;
  33 };
  34
  35 struct thread_info;
  36 struct regcache;
  37 struct target_desc;
  38 struct sym_cache;
  39 struct breakpoint;
  40 struct raw_breakpoint;
  41 struct fast_tracepoint_jump;
  42 struct process_info_private;
  43
  44 struct process_info
  45 {
  46   /* This must appear first.
  47      The list iterator functions assume it.  */
  48   struct inferior_list_entry entry;
  49
  50   /* Nonzero if this child process was attached rather than
  51      spawned.  */
  52   int attached;
  53
  54   /* True if GDB asked us to detach from this process, but we remained
  55      attached anyway.  */
  56   int gdb_detached;
  57
  58   /* The symbol cache.  */
  59   struct sym_cache *symbol_cache;
  60
  61   /* The list of memory breakpoints.  */
  62   struct breakpoint *breakpoints;
  63
  64   /* The list of raw memory breakpoints.  */
  65   struct raw_breakpoint *raw_breakpoints;
  66
  67   /* The list of installed fast tracepoints.  */
  68   struct fast_tracepoint_jump *fast_tracepoint_jumps;
  69
  70   const struct target_desc *tdesc;
  71
  72   /* Private target data.  */
  73   struct process_info_private *priv;
  74 };
  75
  76 #define ptid_of(inf) ((inf)->entry.id)
  77 #define pid_of(inf) ptid_get_pid ((inf)->entry.id)
  78 #define lwpid_of(inf) ptid_get_lwp ((inf)->entry.id)
  79
  80 /* Return a pointer to the process that corresponds to the current
  81    thread (current_thread).  It is an error to call this if there is
  82    no current thread selected.  */
  83
  84 struct process_info *current_process (void);
  85 struct process_info *get_thread_process (struct thread_info *);
  86
  87 extern struct inferior_list all_processes;
  88
  89 void add_inferior_to_list (struct inferior_list *list,
  90                            struct inferior_list_entry *new_inferior);
  91 void for_each_inferior (struct inferior_list *list,
  92                         void (*action) (struct inferior_list_entry *));
  93
  94 void for_each_inferior_with_data
  95   (struct inferior_list *list,
  96    void (*action) (struct inferior_list_entry *, void *),
  97    void *data);
  98
  99 void clear_inferior_list (struct inferior_list *list);
 100
 101 int one_inferior_p (struct inferior_list *list);
 102
 103 /* Helper for ALL_INFERIORS_TYPE.  Gets the next element starting at
 104    CUR, if CUR is not NULL.  */
 105 #define A_I_NEXT(type, list, cur)                                       \
 106   ((cur) != NULL                                                        \
 107    ? (type *) ((struct inferior_list_entry *) cur)->next                \
 108    : NULL)
 109
 110 /* Iterate over all inferiors of type TYPE in LIST, open loop
 111    style.  */
 112 #define ALL_INFERIORS_TYPE(type, list, cur, tmp)                                \
 113   for ((cur) = (type *) (list)->head, (tmp) = A_I_NEXT (type, list, cur); \
 114        (cur) != NULL;                                                   \
 115        (cur) = (tmp), (tmp) = A_I_NEXT (type, list, cur))
 116
 117 /* Iterate over all inferiors in LIST, open loop style.  */
 118 #define ALL_INFERIORS(list, cur, tmp)                           \
 119   ALL_INFERIORS_TYPE (struct inferior_list_entry, list, cur, tmp)
 120
 121 /* Iterate over all processes, open loop style.  */
 122 #define ALL_PROCESSES(cur, tmp)                                 \
 123   ALL_INFERIORS_TYPE (struct process_info, &all_processes, cur, tmp)
 124
 125 extern struct thread_info *current_thread;
 126 void remove_inferior (struct inferior_list *list,
 127                       struct inferior_list_entry *entry);
 128
 129 struct inferior_list_entry *get_first_inferior (struct inferior_list *list);
 130
 131 /* Return the first process in the processes list.  */
 132 struct process_info *get_first_process (void);
 133
 134 struct process_info *add_process (int pid, int attached);
 135 void remove_process (struct process_info *process);
 136 struct process_info *find_process_pid (int pid);
 137 int have_started_inferiors_p (void);
 138 int have_attached_inferiors_p (void);
 139
 140 ptid_t thread_to_gdb_id (struct thread_info *);
 141 ptid_t gdb_id_to_thread_id (ptid_t);
 142
 143 void clear_inferiors (void);
 144 struct inferior_list_entry *find_inferior
 145      (struct inferior_list *,
 146       int (*func) (struct inferior_list_entry *,
 147                    void *),
 148       void *arg);
 149 struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
 150                                               ptid_t id);
 151
 152 void *inferior_target_data (struct thread_info *);
 153 void set_inferior_target_data (struct thread_info *, void *);
 154 struct regcache *inferior_regcache_data (struct thread_info *);
 155 void set_inferior_regcache_data (struct thread_info *, struct regcache *);
 156
 157 #endif /* INFERIORS_H */