ZBar bar code reader . http://zbar.sourceforge.net/ ZBar is licensed under the GNU LGPL 2.1 to enable development of both open source and commercial projects.
Dependents: GR-PEACH_Camera_in_barcode levkov_ov7670
refcnt.c
00001 /*------------------------------------------------------------------------ 00002 * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net> 00003 * 00004 * This file is part of the ZBar Bar Code Reader. 00005 * 00006 * The ZBar Bar Code Reader is free software; you can redistribute it 00007 * and/or modify it under the terms of the GNU Lesser Public License as 00008 * published by the Free Software Foundation; either version 2.1 of 00009 * the License, or (at your option) any later version. 00010 * 00011 * The ZBar Bar Code Reader is distributed in the hope that it will be 00012 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty 00013 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU Lesser Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser Public License 00017 * along with the ZBar Bar Code Reader; if not, write to the Free 00018 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, 00019 * Boston, MA 02110-1301 USA 00020 * 00021 * http://sourceforge.net/projects/zbar 00022 *------------------------------------------------------------------------*/ 00023 00024 #include "refcnt.h" 00025 00026 #ifdef HAVE_LIBPTHREAD 00027 00028 pthread_once_t initialized = PTHREAD_ONCE_INIT; 00029 pthread_mutex_t _zbar_reflock; 00030 00031 static void initialize (void) 00032 { 00033 pthread_mutex_init(&_zbar_reflock, NULL); 00034 } 00035 00036 void _zbar_refcnt_init () 00037 { 00038 pthread_once(&initialized, initialize); 00039 } 00040 00041 00042 #else 00043 00044 void _zbar_refcnt_init () 00045 { 00046 } 00047 00048 #endif 00049
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