1 /* Remote notification in GDB protocol
3 Copyright (C) 1988-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
20 #ifndef REMOTE_NOTIF_H
21 #define REMOTE_NOTIF_H
25 /* An event of a type of async remote notification. */
29 /* Destructor. Release everything from SELF, but not SELF
31 void (*dtr) (struct notif_event *self);
34 /* ID of the notif_client. */
38 REMOTE_NOTIF_STOP = 0,
42 /* A client to a sort of async remote notification. */
44 typedef struct notif_client
46 /* The name of notification packet. */
49 /* The packet to acknowledge a previous reply. */
50 const char *ack_command;
52 /* Parse BUF to get the expected event and update EVENT. This
53 function may throw exception if contents in BUF is not the
55 void (*parse) (struct notif_client *self, char *buf,
56 struct notif_event *event);
58 /* Send field <ack_command> to remote, and do some checking. If
59 something wrong, throw an exception. */
60 void (*ack) (struct notif_client *self, char *buf,
61 struct notif_event *event);
63 /* Check this notification client can get pending events in
64 'remote_notif_process'. */
65 int (*can_get_pending_events) (struct notif_client *self);
67 /* Allocate an event. */
68 struct notif_event *(*alloc_event) (void);
70 /* Id of this notif_client. */
71 const enum REMOTE_NOTIF_ID id;
74 DECLARE_QUEUE_P (notif_client_p);
76 /* State on remote async notification. */
78 struct remote_notif_state
80 /* Notification queue. */
82 QUEUE(notif_client_p) *notif_queue;
84 /* Asynchronous signal handle registered as event loop source for when
85 the remote sent us a notification. The registered callback
86 will do a ACK sequence to pull the rest of the events out of
87 the remote side into our event queue. */
89 struct async_event_handler *get_pending_events_token;
91 /* One pending event for each notification client. This is where we
92 keep it until it is acknowledged. When there is a notification
93 packet, parse it, and create an object of 'struct notif_event' to
94 assign to it. This field is unchanged until GDB starts to ack
95 this notification (which is done by
96 remote.c:remote_notif_pending_replies). */
98 struct notif_event *pending_event[REMOTE_NOTIF_LAST];
101 void remote_notif_ack (struct notif_client *nc, char *buf);
102 struct notif_event *remote_notif_parse (struct notif_client *nc,
105 void notif_event_xfree (struct notif_event *event);
107 void handle_notification (struct remote_notif_state *notif_state,
110 void remote_notif_process (struct remote_notif_state *state,
111 struct notif_client *except);
112 struct remote_notif_state *remote_notif_state_allocate (void);
113 void remote_notif_state_xfree (struct remote_notif_state *state);
115 extern struct notif_client notif_client_stop;
117 extern int notif_debug;
119 #endif /* REMOTE_NOTIF_H */