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 GSList *ping_targets = NULL;
37 static gboolean active = FALSE;
38 static guint32 ping_next_id = 1;
40 #define PING_TIMEOUT (G_USEC_PER_SEC * 3)
41 /*! Warn the user after this many PING_TIMEOUT intervals */
42 #define PING_TIMEOUT_WARN 3
44 static void ping_send(ObPingTarget *t);
45 static void ping_end(ObClient *client, gpointer data);
46 static gboolean ping_timeout(gpointer data);
48 void ping_start(struct _ObClient *client, ObPingEventHandler h)
53 g_assert(client->ping == TRUE);
55 /* make sure we're not already pinging it */
56 for (it = ping_targets; it != NULL; it = g_slist_next(it)) {
58 if (t->client == client) return;
61 t = g_new(ObPingTarget, 1);
64 t->waiting = 1; /* first wait for a reply */
67 ping_targets = g_slist_prepend(ping_targets, t);
68 ob_main_loop_timeout_add(ob_main_loop, PING_TIMEOUT, ping_timeout,
69 t, g_direct_equal, NULL);
73 /* listen for the client to disappear */
74 client_add_destroy_notify(ping_end, NULL);
78 void ping_stop(struct _ObClient *c)
83 void ping_got_pong(guint32 id)
88 /* make sure we're not already pinging it */
89 for (it = ping_targets; it != NULL; it = g_slist_next(it)) {
92 /*g_print("-PONG: '%s' (id %u)\n", t->client->title, t->id);*/
93 if (t->waiting > PING_TIMEOUT_WARN) {
94 /* we had notified that they weren't responding, so now we
95 need to notify that they are again */
96 t->h(t->client, FALSE);
98 t->waiting = 0; /* not waiting for a reply anymore */
104 ob_debug("Got PONG with id %u but not waiting for one\n", id);
107 static void ping_send(ObPingTarget *t)
109 t->id = ping_next_id++;
110 /*g_print("+PING: '%s' (id %u)\n", t->client->title, t->id);*/
111 PROP_MSG_TO(t->client->window, t->client->window, wm_protocols,
112 prop_atoms.net_wm_ping, t->id, t->client->window, 0, 0,
116 static gboolean ping_timeout(gpointer data)
118 ObPingTarget *t = data;
120 if (t->waiting == 0) { /* got a reply already */
121 /* send another ping to make sure it's still alive */
125 if (t->waiting == PING_TIMEOUT_WARN)
126 t->h(t->client, TRUE); /* notify that the client isn't responding */
130 return TRUE; /* repeat */
133 static void ping_end(ObClient *client, gpointer data)
138 for (it = ping_targets; it != NULL; it = g_slist_next(it)) {
140 if (t->client == client) {
141 ping_targets = g_slist_remove_link(ping_targets, it);
142 ob_main_loop_timeout_remove_data(ob_main_loop, ping_timeout, t,
149 /* stop listening if we're not waiting for any more pings */
152 client_remove_destroy_notify(ping_end);