00001 #ifndef _SYS_CONDITION_H_ 00002 #define _SYS_CONDITION_H_ 00003 00004 /* 00005 * Copyright (C) 2008 by EmbeddedIT, 00006 * Ole Reinhardt <ole.reinhardt@embedded-it.de> All rights reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 00012 * 1. Redistributions of source code must retain the above copyright 00013 * notice, this list of conditions and the following disclaimer. 00014 * 2. Redistributions in binary form must reproduce the above copyright 00015 * notice, this list of conditions and the following disclaimer in the 00016 * documentation and/or other materials provided with the distribution. 00017 * 3. Neither the name of the copyright holders nor the names of 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY EMBEDDED IT AND CONTRIBUTORS 00022 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EMBEDDED IT 00025 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00026 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00027 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00028 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00029 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00030 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 00031 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 * 00033 * For additional information see http://www.ethernut.de/ 00034 * 00035 */ 00036 00037 /* 00038 * $Log$ 00039 * Revision 1.2 2008/04/29 01:51:52 thiagocorrea 00040 * Compile fix 00041 * 00042 * Revision 1.1 2008/04/21 22:24:53 olereinhardt 00043 * Implemented condition variables to use with NutOS as an application candy 00044 * 00045 */ 00046 00047 #include <sys/atom.h> 00048 #include <sys/mutex.h> 00049 #include <sys/types.h> 00050 00055 00059 typedef struct _CONDITION CONDITION; 00060 00066 struct _CONDITION { 00067 HANDLE event; 00068 MUTEX mutex; 00069 }; 00070 00071 00072 __BEGIN_DECLS 00073 00074 extern int NutConditionInit(CONDITION * cond); 00075 extern void NutConditionLock(CONDITION * cond); 00076 extern void NutConditionUnlock(CONDITION * cond); 00077 extern int NutConditionWait(CONDITION * cond); 00078 extern int NutConditionSignal(CONDITION * cond); 00079 extern int NutConditionBroadcast(CONDITION * cond); 00080 extern void NutConditionFree(CONDITION * cond); 00081 00082 __END_DECLS 00083 00086 #endif