src/client_list.c

   1 /*
   2  * Copyright (C) 2003-2009 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 "client_internal.h"
  21
  22 #include <assert.h>
  23
  24 static GList *clients;
  25 static unsigned num_clients;
  26
  27 bool
  28 client_list_is_empty(void)
  29 {
  30         return num_clients == 0;
  31 }
  32
  33 bool
  34 client_list_is_full(void)
  35 {
  36         return num_clients >= client_max_connections;
  37 }
  38
  39 struct client *
  40 client_list_get_first(void)
  41 {
  42         assert(clients != NULL);
  43
  44         return clients->data;
  45 }
  46
  47 void
  48 client_list_add(struct client *client)
  49 {
  50         clients = g_list_prepend(clients, client);
  51         ++num_clients;
  52 }
  53
  54 void
  55 client_list_foreach(GFunc func, gpointer user_data)
  56 {
  57         g_list_foreach(clients, func, user_data);
  58 }
  59
  60 void
  61 client_list_remove(struct client *client)
  62 {
  63         assert(num_clients > 0);
  64         assert(clients != NULL);
  65
  66         clients = g_list_remove(clients, client);
  67         --num_clients;
  68 }