gdb/remote-notif.h

   1 /* Remote notification in GDB protocol
   2
   3    Copyright (C) 1988-2013 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef REMOTE_NOTIF_H
  21 #define REMOTE_NOTIF_H
  22
  23 #include "queue.h"
  24
  25 /* An event of a type of async remote notification.  */
  26
  27 struct notif_event
  28 {
  29   /* Destructor.  Release everything from SELF, but not SELF
  30      itself.  */
  31   void (*dtr) (struct notif_event *self);
  32 };
  33
  34 /* A client to a sort of async remote notification.  */
  35
  36 typedef struct notif_client
  37 {
  38   /* The name of notification packet.  */
  39   const char *name;
  40
  41   /* The packet to acknowledge a previous reply.  */
  42   const char *ack_command;
  43
  44   /* Parse BUF to get the expected event and update EVENT.  This
  45      function may throw exception if contents in BUF is not the
  46      expected event.  */
  47   void (*parse) (struct notif_client *self, char *buf,
  48                  struct notif_event *event);
  49
  50   /* Send field <ack_command> to remote, and do some checking.  If
  51      something wrong, throw an exception.  */
  52   void (*ack) (struct notif_client *self, char *buf,
  53                struct notif_event *event);
  54
  55   /* Check this notification client can get pending events in
  56      'remote_notif_process'.  */
  57   int (*can_get_pending_events) (struct notif_client *self);
  58
  59   /* Allocate an event.  */
  60   struct notif_event *(*alloc_event) (void);
  61
  62   /* One pending event.  This is where we keep it until it is
  63      acknowledged.  When there is a notification packet, parse it,
  64      and create an object of 'struct notif_event' to assign to
  65      it.  This field is unchanged until GDB starts to ack this
  66      notification (which is done by
  67      remote.c:remote_notif_pending_replies).  */
  68   struct notif_event *pending_event;
  69 } *notif_client_p;
  70
  71 void remote_notif_ack (struct notif_client *nc, char *buf);
  72 struct notif_event *remote_notif_parse (struct notif_client *nc,
  73                                         char *buf);
  74
  75 void handle_notification (char *buf);
  76
  77 void remote_notif_register_async_event_handler (void);
  78 void remote_notif_unregister_async_event_handler (void);
  79
  80 void remote_notif_process (struct notif_client *except);
  81 extern struct notif_client notif_client_stop;
  82
  83 extern unsigned int notif_debug;
  84
  85 #endif /* REMOTE_NOTIF_H */