GDB 7.6.50

gdb/remote-notif.h

Index: gdb/remote-notif.h
diff --git a/gdb/remote-notif.h b/gdb/remote-notif.h
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+/* Remote notification in GDB protocol
+
+   Copyright (C) 1988-2013 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef REMOTE_NOTIF_H
+#define REMOTE_NOTIF_H
+
+#include "queue.h"
+
+/* An event of a type of async remote notification.  */
+
+struct notif_event
+{
+  /* Destructor.  Release everything from SELF, but not SELF
+     itself.  */
+  void (*dtr) (struct notif_event *self);
+};
+
+/* ID of the notif_client.  */
+
+enum REMOTE_NOTIF_ID
+{
+  REMOTE_NOTIF_STOP = 0,
+  REMOTE_NOTIF_LAST,
+};
+
+/* A client to a sort of async remote notification.  */
+
+typedef struct notif_client
+{
+  /* The name of notification packet.  */
+  const char *name;
+
+  /* The packet to acknowledge a previous reply.  */
+  const char *ack_command;
+
+  /* Parse BUF to get the expected event and update EVENT.  This
+     function may throw exception if contents in BUF is not the
+     expected event.  */
+  void (*parse) (struct notif_client *self, char *buf,
+		 struct notif_event *event);
+
+  /* Send field <ack_command> to remote, and do some checking.  If
+     something wrong, throw an exception.  */
+  void (*ack) (struct notif_client *self, char *buf,
+	       struct notif_event *event);
+
+  /* Check this notification client can get pending events in
+     'remote_notif_process'.  */
+  int (*can_get_pending_events) (struct notif_client *self);
+
+  /* Allocate an event.  */
+  struct notif_event *(*alloc_event) (void);
+
+  /* Id of this notif_client.  */
+  const enum REMOTE_NOTIF_ID id;
+} *notif_client_p;
+
+DECLARE_QUEUE_P (notif_client_p);
+
+/* State on remote async notification.  */
+
+struct remote_notif_state
+{
+  /* Notification queue.  */
+
+  QUEUE(notif_client_p) *notif_queue;
+
+  /* Asynchronous signal handle registered as event loop source for when
+     the remote sent us a notification.  The registered callback
+     will do a ACK sequence to pull the rest of the events out of
+     the remote side into our event queue.  */
+
+  struct async_event_handler *get_pending_events_token;
+
+/* One pending event for each notification client.  This is where we
+   keep it until it is acknowledged.  When there is a notification
+   packet, parse it, and create an object of 'struct notif_event' to
+   assign to it.  This field is unchanged until GDB starts to ack
+   this notification (which is done by
+   remote.c:remote_notif_pending_replies).  */
+
+  struct notif_event *pending_event[REMOTE_NOTIF_LAST];
+};
+
+void remote_notif_ack (struct notif_client *nc, char *buf);
+struct notif_event *remote_notif_parse (struct notif_client *nc,
+					char *buf);
+
+void notif_event_xfree (struct notif_event *event);
+
+void handle_notification (struct remote_notif_state *notif_state,
+			  char *buf);
+
+void remote_notif_process (struct remote_notif_state *state,
+			   struct notif_client *except);
+struct remote_notif_state *remote_notif_state_allocate (void);
+void remote_notif_state_xfree (struct remote_notif_state *state);
+
+extern struct notif_client notif_client_stop;
+
+extern int notif_debug;
+
+#endif /* REMOTE_NOTIF_H */