00001 /***************************************************************************************** 00002 Copyright (c) 2002 The UbixOS Project 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are 00006 permitted provided that the following conditions are met: 00007 00008 Redistributions of source code must retain the above copyright notice, this list of 00009 conditions, the following disclaimer and the list of authors. Redistributions in binary 00010 form must reproduce the above copyright notice, this list of conditions, the following 00011 disclaimer and the list of authors in the documentation and/or other materials provided 00012 with the distribution. Neither the name of the UbixOS Project nor the names of its 00013 contributors may be used to endorse or promote products derived from this software 00014 without specific prior written permission. 00015 00016 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 00017 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00018 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 00019 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00020 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00021 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00022 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 00023 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00024 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00025 00026 $Id$ 00027 00028 *****************************************************************************************/ 00029 00030 #ifndef _SPINLOCK_H 00031 #define _SPINLOCK_H 00032 00033 #include <ubixos/types.h> 00034 00035 #define SPIN_LOCK_INITIALIZER 0 00036 00037 typedef volatile int spinLock_t; 00038 00039 extern inline void spinLockInit(spinLock_t *); 00040 extern inline void spinUnlock(spinLock_t *); 00041 extern inline int spinTryLock(spinLock_t *); 00042 extern inline void spinLock(spinLock_t *); 00043 extern inline int spinLockLocked(spinLock_t *); 00044 00045 #endif 00046 00047 /*** 00048 END 00049 ***/ 00050