gdbserver/notif.h

   1 /* Notification to GDB.
   2    Copyright (C) 1989-2020 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 GDBSERVER_NOTIF_H
  20 #define GDBSERVER_NOTIF_H
  21
  22 #include "target.h"
  23 #include <list>
  24
  25 /* Structure holding information related to a single event.  We
  26    keep a queue of these to push to GDB.  It can be extended if
  27    the event of given notification contains more information.  */
  28
  29 struct notif_event
  30 {
  31   virtual ~notif_event ()
  32   {
  33   }
  34
  35   /* No payload needed.  */
  36 };
  37
  38 /* A type notification to GDB.  An object of 'struct notif_server'
  39    represents a type of notification.  */
  40
  41 typedef struct notif_server
  42 {
  43   /* The name of ack packet, for example, 'vStopped'.  */
  44   const char *ack_name;
  45
  46   /* The notification packet, for example, '%Stop'.  Note that '%' is
  47      not in 'notif_name'.  */
  48   const char *notif_name;
  49
  50   /* A queue of events to GDB.  A new notif_event can be enque'ed
  51      into QUEUE at any appropriate time, and the notif_reply is
  52      deque'ed only when the ack from GDB arrives.  */
  53   std::list<notif_event *> queue;
  54
  55   /* Write event EVENT to OWN_BUF.  */
  56   void (*write) (struct notif_event *event, char *own_buf);
  57 } *notif_server_p;
  58
  59 extern struct notif_server notif_stop;
  60
  61 int handle_notif_ack (char *own_buf, int packet_len);
  62 void notif_write_event (struct notif_server *notif, char *own_buf);
  63
  64 void notif_push (struct notif_server *np, struct notif_event *event);
  65 void notif_event_enque (struct notif_server *notif,
  66                         struct notif_event *event);
  67
  68 #endif /* GDBSERVER_NOTIF_H */