1 /* Remote notification in GDB protocol
3 Copyright (C) 1988-2018 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,
44 /* A client to a sort of async remote notification. */
46 typedef struct notif_client
48 /* The name of notification packet. */
51 /* The packet to acknowledge a previous reply. */
52 const char *ack_command;
54 /* Parse BUF to get the expected event and update EVENT. This
55 function may throw exception if contents in BUF is not the
57 void (*parse) (remote_target *remote,
58 struct notif_client *self, char *buf,
59 struct notif_event *event);
61 /* Send field <ack_command> to remote, and do some checking. If
62 something wrong, throw an exception. */
63 void (*ack) (remote_target *remote,
64 struct notif_client *self, char *buf,
65 struct notif_event *event);
67 /* Check this notification client can get pending events in
68 'remote_notif_process'. */
69 int (*can_get_pending_events) (remote_target *remote,
70 struct notif_client *self);
72 /* Allocate an event. */
73 struct notif_event *(*alloc_event) (void);
75 /* Id of this notif_client. */
76 const enum REMOTE_NOTIF_ID id;
79 DECLARE_QUEUE_P (notif_client_p);
81 /* State on remote async notification. */
83 struct remote_notif_state
85 /* The remote target. */
86 remote_target *remote;
88 /* Notification queue. */
90 QUEUE(notif_client_p) *notif_queue;
92 /* Asynchronous signal handle registered as event loop source for when
93 the remote sent us a notification. The registered callback
94 will do a ACK sequence to pull the rest of the events out of
95 the remote side into our event queue. */
97 struct async_event_handler *get_pending_events_token;
99 /* One pending event for each notification client. This is where we
100 keep it until it is acknowledged. When there is a notification
101 packet, parse it, and create an object of 'struct notif_event' to
102 assign to it. This field is unchanged until GDB starts to ack
103 this notification (which is done by
104 remote.c:remote_notif_pending_replies). */
106 struct notif_event *pending_event[REMOTE_NOTIF_LAST];
109 void remote_notif_ack (remote_target *remote, notif_client *nc, char *buf);
110 struct notif_event *remote_notif_parse (remote_target *remote,
114 void notif_event_xfree (struct notif_event *event);
116 void handle_notification (struct remote_notif_state *notif_state,
119 void remote_notif_process (struct remote_notif_state *state,
120 struct notif_client *except);
121 remote_notif_state *remote_notif_state_allocate (remote_target *remote);
122 void remote_notif_state_xfree (struct remote_notif_state *state);
124 extern struct notif_client notif_client_stop;
126 extern int notif_debug;
128 #endif /* REMOTE_NOTIF_H */