event.h

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 #ifndef _ZBAR_EVENT_H_
00024 #define _ZBAR_EVENT_H_
00025 
00026 #include <config.h>
00027 #include "mutex.h"
00028 #include "timer.h"
00029 
00030 /* platform synchronization "event" abstraction
00031  */
00032 
00033 #if defined(_WIN32)
00034 
00035 # include <windows.h>
00036 
00037 typedef HANDLE zbar_event_t;
00038 
00039 
00040 #else
00041 
00042 # ifdef HAVE_LIBPTHREAD
00043 #  include <pthread.h>
00044 # endif
00045 
00046 typedef struct zbar_event_s {
00047     int state;
00048 # ifdef HAVE_LIBPTHREAD
00049     pthread_cond_t cond;
00050 # endif
00051     int pollfd;
00052 } zbar_event_t;
00053 
00054 #endif
00055 
00056 
00057 extern int _zbar_event_init(zbar_event_t*);
00058 extern void _zbar_event_destroy(zbar_event_t*);
00059 extern void _zbar_event_trigger(zbar_event_t*);
00060 extern int _zbar_event_wait(zbar_event_t*, zbar_mutex_t*, zbar_timer_t*);
00061 
00062 #endif
00063