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Dogcows Code - chaz/openbox/blob - openbox/ping.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 client.h for the Openbox window manager
4 Copyright (c) 2006 Mikael Magnusson
5 Copyright (c) 2003-2008 Dana Jansens
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 2 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 See the COPYING file for a copy of the GNU General Public License.
27 typedef struct _ObPingTarget
35 static GSList
*ping_targets
= NULL
;
36 static gboolean active
= FALSE
;
38 #define PING_TIMEOUT (G_USEC_PER_SEC * 1)
39 /*! Warn the user after this many PING_TIMEOUT intervals */
40 #define PING_TIMEOUT_WARN 3
42 static void ping_send(ObPingTarget
*t
);
43 static void ping_end(ObClient
*client
, gpointer data
);
44 static gboolean
ping_timeout(gpointer data
);
46 void ping_start(struct _ObClient
*client
, ObPingEventHandler h
)
51 g_assert(client
->ping
== TRUE
);
53 /* make sure we're not already pinging it */
54 for (it
= ping_targets
; it
!= NULL
; it
= g_slist_next(it
)) {
56 if (t
->client
== client
) return;
59 t
= g_new(ObPingTarget
, 1);
62 t
->waiting
= 1; /* first wait for a reply */
65 ping_targets
= g_slist_prepend(ping_targets
, t
);
66 ob_main_loop_timeout_add(ob_main_loop
, PING_TIMEOUT
, ping_timeout
,
71 /* listen for the client to disappear */
72 client_add_destroy_notify(ping_end
, NULL
);
76 void ping_stop(struct _ObClient
*c
)
81 void ping_got_pong(Time timestamp
)
86 /* make sure we're not already pinging it */
87 for (it
= ping_targets
; it
!= NULL
; it
= g_slist_next(it
)) {
89 if (t
->sent
== timestamp
) {
90 ob_debug("Got PONG with timestamp %lu\n", timestamp
);
91 if (t
->waiting
> PING_TIMEOUT_WARN
) {
92 /* we had notified that they weren't responding, so now we
93 need to notify that they are again */
94 t
->h(t
->client
, FALSE
);
96 t
->waiting
= 0; /* not waiting for a reply anymore */
102 ob_debug("Got PONG with timestamp %lu but not waiting for one\n",
106 static void ping_send(ObPingTarget
*t
)
108 t
->sent
= event_get_server_time();
109 ob_debug("PINGing client 0x%x at %lu\n", t
->client
->window
, t
->sent
);
110 PROP_MSG_TO(t
->client
->window
, t
->client
->window
, wm_protocols
,
111 prop_atoms
.net_wm_ping
, t
->sent
, t
->client
->window
, 0, 0,
115 static gboolean
ping_timeout(gpointer data
)
117 ObPingTarget
*t
= data
;
119 if (t
->waiting
== 0) { /* got a reply already */
120 /* send another ping to make sure it's still alive */
124 if (t
->waiting
== PING_TIMEOUT_WARN
)
125 t
->h(t
->client
, TRUE
); /* notify that the client isn't responding */
129 return TRUE
; /* repeat */
132 static void ping_end(ObClient
*client
, gpointer data
)
137 for (it
= ping_targets
; it
!= NULL
; it
= g_slist_next(it
)) {
139 if (t
->client
== client
) {
140 ping_targets
= g_slist_remove_link(ping_targets
, it
);
141 ob_main_loop_timeout_remove_data(ob_main_loop
, ping_timeout
, t
,
148 /* stop listening if we're not waiting for any more pings */
151 client_remove_destroy_notify(ping_end
);
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