src/client_expire.c

   1 /*
   2  * Copyright (C) 2003-2010 The Music Player Daemon Project
   3  * http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include "config.h"
  21 #include "client_internal.h"
  22
  23 static guint expire_source_id;
  24
  25 void
  26 client_set_expired(struct client *client)
  27 {
  28         if (!client_is_expired(client))
  29                 client_schedule_expire();
  30
  31         if (client->source_id != 0) {
  32                 g_source_remove(client->source_id);
  33                 client->source_id = 0;
  34         }
  35
  36         if (client->channel != NULL) {
  37                 g_io_channel_unref(client->channel);
  38                 client->channel = NULL;
  39         }
  40 }
  41
  42 static void
  43 client_check_expired_callback(gpointer data, G_GNUC_UNUSED gpointer user_data)
  44 {
  45         struct client *client = data;
  46
  47         if (client_is_expired(client)) {
  48                 g_debug("[%u] expired", client->num);
  49                 client_close(client);
  50         } else if (!client->idle_waiting && /* idle clients
  51                                                never expire */
  52                    (int)g_timer_elapsed(client->last_activity, NULL) >
  53                    client_timeout) {
  54                 g_debug("[%u] timeout", client->num);
  55                 client_close(client);
  56         }
  57 }
  58
  59 static void
  60 client_manager_expire(void)
  61 {
  62         client_list_foreach(client_check_expired_callback, NULL);
  63 }
  64
  65 /**
  66  * An idle event which calls client_manager_expire().
  67  */
  68 static gboolean
  69 client_manager_expire_event(G_GNUC_UNUSED gpointer data)
  70 {
  71         expire_source_id = 0;
  72         client_manager_expire();
  73         return false;
  74 }
  75
  76 void
  77 client_schedule_expire(void)
  78 {
  79         if (expire_source_id == 0)
  80                 /* delayed deletion */
  81                 expire_source_id = g_idle_add(client_manager_expire_event,
  82                                               NULL);
  83 }
  84
  85 void
  86 client_deinit_expire(void)
  87 {
  88         if (expire_source_id != 0)
  89                 g_source_remove(expire_source_id);
  90 }