gdb/gdbserver/inferiors.h

   1 /* Inferior process information for the remote server for GDB.
   2    Copyright (C) 1993-2016 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 #include "gdb_vecs.h"
  23
  24 /* Generic information for tracking a list of ``inferiors'' - threads,
  25    processes, etc.  */
  26 struct inferior_list
  27 {
  28   struct inferior_list_entry *head;
  29   struct inferior_list_entry *tail;
  30 };
  31 struct inferior_list_entry
  32 {
  33   ptid_t id;
  34   struct inferior_list_entry *next;
  35 };
  36
  37 struct thread_info;
  38 struct regcache;
  39 struct target_desc;
  40 struct sym_cache;
  41 struct breakpoint;
  42 struct raw_breakpoint;
  43 struct fast_tracepoint_jump;
  44 struct process_info_private;
  45
  46 struct process_info
  47 {
  48   /* This must appear first.
  49      The list iterator functions assume it.  */
  50   struct inferior_list_entry entry;
  51
  52   /* Nonzero if this child process was attached rather than
  53      spawned.  */
  54   int attached;
  55
  56   /* True if GDB asked us to detach from this process, but we remained
  57      attached anyway.  */
  58   int gdb_detached;
  59
  60   /* The symbol cache.  */
  61   struct sym_cache *symbol_cache;
  62
  63   /* The list of memory breakpoints.  */
  64   struct breakpoint *breakpoints;
  65
  66   /* The list of raw memory breakpoints.  */
  67   struct raw_breakpoint *raw_breakpoints;
  68
  69   /* The list of installed fast tracepoints.  */
  70   struct fast_tracepoint_jump *fast_tracepoint_jumps;
  71
  72   /* The list of syscalls to report, or just a single element, ANY_SYSCALL,
  73      for unfiltered syscall reporting.  */
  74   VEC (int) *syscalls_to_catch;
  75
  76   const struct target_desc *tdesc;
  77
  78   /* Private target data.  */
  79   struct process_info_private *priv;
  80 };
  81
  82 #define ptid_of(inf) ((inf)->entry.id)
  83 #define pid_of(inf) ptid_get_pid ((inf)->entry.id)
  84 #define lwpid_of(inf) ptid_get_lwp ((inf)->entry.id)
  85
  86 /* Return a pointer to the process that corresponds to the current
  87    thread (current_thread).  It is an error to call this if there is
  88    no current thread selected.  */
  89
  90 struct process_info *current_process (void);
  91 struct process_info *get_thread_process (const struct thread_info *);
  92
  93 extern struct inferior_list all_processes;
  94
  95 void add_inferior_to_list (struct inferior_list *list,
  96                            struct inferior_list_entry *new_inferior);
  97 void for_each_inferior (struct inferior_list *list,
  98                         void (*action) (struct inferior_list_entry *));
  99
 100 void for_each_inferior_with_data
 101   (struct inferior_list *list,
 102    void (*action) (struct inferior_list_entry *, void *),
 103    void *data);
 104
 105 void clear_inferior_list (struct inferior_list *list);
 106
 107 int one_inferior_p (struct inferior_list *list);
 108
 109 /* Helper for ALL_INFERIORS_TYPE.  Gets the next element starting at
 110    CUR, if CUR is not NULL.  */
 111 #define A_I_NEXT(type, list, cur)                                       \
 112   ((cur) != NULL                                                        \
 113    ? (type *) ((struct inferior_list_entry *) cur)->next                \
 114    : NULL)
 115
 116 /* Iterate over all inferiors of type TYPE in LIST, open loop
 117    style.  */
 118 #define ALL_INFERIORS_TYPE(type, list, cur, tmp)                                \
 119   for ((cur) = (type *) (list)->head, (tmp) = A_I_NEXT (type, list, cur); \
 120        (cur) != NULL;                                                   \
 121        (cur) = (tmp), (tmp) = A_I_NEXT (type, list, cur))
 122
 123 /* Iterate over all inferiors in LIST, open loop style.  */
 124 #define ALL_INFERIORS(list, cur, tmp)                           \
 125   ALL_INFERIORS_TYPE (struct inferior_list_entry, list, cur, tmp)
 126
 127 /* Iterate over all processes, open loop style.  */
 128 #define ALL_PROCESSES(cur, tmp)                                 \
 129   ALL_INFERIORS_TYPE (struct process_info, &all_processes, cur, tmp)
 130
 131 extern struct thread_info *current_thread;
 132 void remove_inferior (struct inferior_list *list,
 133                       struct inferior_list_entry *entry);
 134
 135 struct inferior_list_entry *get_first_inferior (struct inferior_list *list);
 136
 137 /* Return the first process in the processes list.  */
 138 struct process_info *get_first_process (void);
 139
 140 struct process_info *add_process (int pid, int attached);
 141 void remove_process (struct process_info *process);
 142 struct process_info *find_process_pid (int pid);
 143 int have_started_inferiors_p (void);
 144 int have_attached_inferiors_p (void);
 145
 146 ptid_t thread_to_gdb_id (struct thread_info *);
 147 ptid_t gdb_id_to_thread_id (ptid_t);
 148
 149 void clear_inferiors (void);
 150 struct inferior_list_entry *find_inferior
 151      (struct inferior_list *,
 152       int (*func) (struct inferior_list_entry *,
 153                    void *),
 154       void *arg);
 155 struct inferior_list_entry *find_inferior_id (struct inferior_list *list,
 156                                               ptid_t id);
 157
 158 void *inferior_target_data (struct thread_info *);
 159 void set_inferior_target_data (struct thread_info *, void *);
 160 struct regcache *inferior_regcache_data (struct thread_info *);
 161 void set_inferior_regcache_data (struct thread_info *, struct regcache *);
 162
 163 #endif /* INFERIORS_H */