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Diffstat (limited to 'zbar/refcnt.c')
-rw-r--r-- | zbar/refcnt.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/zbar/refcnt.c b/zbar/refcnt.c new file mode 100644 index 0000000..e3a5cd9 --- /dev/null +++ b/zbar/refcnt.c @@ -0,0 +1,47 @@ +/*------------------------------------------------------------------------ + * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net> + * + * This file is part of the ZBar Bar Code Reader. + * + * The ZBar Bar Code Reader is free software; you can redistribute it + * and/or modify it under the terms of the GNU Lesser Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * The ZBar Bar Code Reader is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser Public License for more details. + * + * You should have received a copy of the GNU Lesser Public License + * along with the ZBar Bar Code Reader; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301 USA + * + * http://sourceforge.net/projects/zbar + *------------------------------------------------------------------------*/ + +#include "refcnt.h" + +#if !defined(_WIN32) && !defined(TARGET_OS_MAC) && defined(HAVE_LIBPTHREAD) + +pthread_once_t initialized = PTHREAD_ONCE_INIT; +pthread_mutex_t _zbar_reflock; + +static void initialize(void) +{ + pthread_mutex_init(&_zbar_reflock, NULL); +} + +void _zbar_refcnt_init() +{ + pthread_once(&initialized, initialize); +} + +#else + +void _zbar_refcnt_init() +{ +} + +#endif |