]>
Dogcows Code - chaz/openbox/blob - openbox/ping.c
16f95adb16d6a1ab2cdfe5a4b7452edf7a1b7d1b
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.
28 typedef struct _ObPingTarget
36 static GHashTable
*ping_ids
= NULL
;
37 static guint32 ping_next_id
= 1;
39 #define PING_TIMEOUT (G_USEC_PER_SEC * 3)
40 /*! Warn the user after this many PING_TIMEOUT intervals */
41 #define PING_TIMEOUT_WARN 3
43 static void ping_send(ObPingTarget
*t
);
44 static void ping_end(ObClient
*client
, gpointer data
);
45 static gboolean
ping_timeout(gpointer data
);
46 static gboolean
find_client(gpointer key
, gpointer value
, gpointer client
);
48 void ping_startup(gboolean reconfigure
)
50 if (reconfigure
) return;
52 ping_ids
= g_hash_table_new(g_direct_hash
, g_int_equal
);
54 /* listen for clients to disappear */
55 client_add_destroy_notify(ping_end
, NULL
);
58 void ping_shutdown(gboolean reconfigure
)
60 if (reconfigure
) return;
62 g_hash_table_unref(ping_ids
);
64 client_remove_destroy_notify(ping_end
);
67 void ping_start(struct _ObClient
*client
, ObPingEventHandler h
)
71 g_assert(g_hash_table_find(ping_ids
, find_client
, client
) == NULL
);
73 g_assert(client
->ping
== TRUE
);
75 t
= g_new0(ObPingTarget
, 1);
79 ob_main_loop_timeout_add(ob_main_loop
, PING_TIMEOUT
, ping_timeout
,
80 t
, g_direct_equal
, NULL
);
81 /* act like we just timed out immediately, to start the pinging process
82 now instead of after the first delay */
86 void ping_stop(struct _ObClient
*c
)
91 void ping_got_pong(guint32 id
)
95 if ((t
= g_hash_table_lookup(ping_ids
, &id
))) {
96 /*g_print("-PONG: '%s' (id %u)\n", t->client->title, t->id);*/
97 if (t
->waiting
> PING_TIMEOUT_WARN
) {
98 /* we had notified that they weren't responding, so now we
99 need to notify that they are again */
100 t
->h(t
->client
, FALSE
);
102 t
->waiting
= 0; /* not waiting for a reply anymore */
105 ob_debug("Got PONG with id %u but not waiting for one\n", id
);
108 static gboolean
find_client(gpointer key
, gpointer value
, gpointer client
)
110 ObPingTarget
*t
= value
;
111 return t
->client
== client
;
114 static void ping_send(ObPingTarget
*t
)
116 /* t->id is 0 when it hasn't been assigned an id ever yet.
117 we can reuse ids when t->waiting == 0, because we won't be getting a
118 pong for that id in the future again. that way for apps that aren't
119 timing out we don't need to remove/add them from/to the hash table */
120 if (t
->id
== 0 || t
->waiting
> 0) {
121 /* pick an id, and reinsert in the hash table with the new id */
122 if (t
->id
) g_hash_table_remove(ping_ids
, &t
->id
);
123 t
->id
= ping_next_id
;
124 if (++ping_next_id
== 0) ++ping_next_id
; /* skip 0 on wraparound */
125 g_hash_table_insert(ping_ids
, &t
->id
, t
);
128 /*g_print("+PING: '%s' (id %u)\n", t->client->title, t->id);*/
129 PROP_MSG_TO(t
->client
->window
, t
->client
->window
, wm_protocols
,
130 prop_atoms
.net_wm_ping
, t
->id
, t
->client
->window
, 0, 0,
134 static gboolean
ping_timeout(gpointer data
)
136 ObPingTarget
*t
= data
;
140 /* if the client hasn't been responding then do something about it */
141 if (t
->waiting
== PING_TIMEOUT_WARN
)
142 t
->h(t
->client
, TRUE
); /* notify that the client isn't responding */
146 return TRUE
; /* repeat */
149 static void ping_end(ObClient
*client
, gpointer data
)
153 t
= g_hash_table_find(ping_ids
, find_client
, client
);
154 g_assert (t
!= NULL
);
156 g_hash_table_remove(ping_ids
, &t
->id
);
158 ob_main_loop_timeout_remove_data(ob_main_loop
, ping_timeout
, t
, FALSE
);
This page took 0.037949 seconds and 4 git commands to generate.