src/client_list.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 #include <assert.h>
  24
  25 static GList *clients;
  26 static unsigned num_clients;
  27
  28 bool
  29 client_list_is_empty(void)
  30 {
  31         return num_clients == 0;
  32 }
  33
  34 bool
  35 client_list_is_full(void)
  36 {
  37         return num_clients >= client_max_connections;
  38 }
  39
  40 struct client *
  41 client_list_get_first(void)
  42 {
  43         assert(clients != NULL);
  44
  45         return clients->data;
  46 }
  47
  48 void
  49 client_list_add(struct client *client)
  50 {
  51         clients = g_list_prepend(clients, client);
  52         ++num_clients;
  53 }
  54
  55 void
  56 client_list_foreach(GFunc func, gpointer user_data)
  57 {
  58         g_list_foreach(clients, func, user_data);
  59 }
  60
  61 void
  62 client_list_remove(struct client *client)
  63 {
  64         assert(num_clients > 0);
  65         assert(clients != NULL);
  66
  67         clients = g_list_remove(clients, client);
  68         --num_clients;
  69 }