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00001 #ifndef COIN_SBRWMUTEX_H 00002 #define COIN_SBRWMUTEX_H 00003 00004 /**************************************************************************\ 00005 * 00006 * This file is part of the Coin 3D visualization library. 00007 * Copyright (C) 1998-2007 by Systems in Motion. All rights reserved. 00008 * 00009 * This library is free software; you can redistribute it and/or 00010 * modify it under the terms of the GNU General Public License 00011 * ("GPL") version 2 as published by the Free Software Foundation. 00012 * See the file LICENSE.GPL at the root directory of this source 00013 * distribution for additional information about the GNU GPL. 00014 * 00015 * For using Coin with software that can not be combined with the GNU 00016 * GPL, and for taking advantage of the additional benefits of our 00017 * support services, please contact Systems in Motion about acquiring 00018 * a Coin Professional Edition License. 00019 * 00020 * See http://www.coin3d.org/ for more information. 00021 * 00022 * Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY. 00023 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org 00024 * 00025 \**************************************************************************/ 00026 00027 #include <Inventor/C/threads/rwmutex.h> 00028 00029 class SbRWMutex { 00030 public: 00031 enum Precedence { 00032 READ_PRECEDENCE, 00033 WRITE_PRECEDENCE 00034 }; 00035 00036 SbRWMutex(Precedence policy) { 00037 this->rwmutex = cc_rwmutex_construct_etc( 00038 (policy == WRITE_PRECEDENCE)? CC_WRITE_PRECEDENCE : CC_READ_PRECEDENCE); 00039 } 00040 ~SbRWMutex(void) { cc_rwmutex_destruct(this->rwmutex); } 00041 00042 int writeLock(void) { 00043 return cc_rwmutex_write_lock(this->rwmutex) == CC_OK ? 0 : 1; 00044 } 00045 SbBool tryWriteLock(void) { 00046 return cc_rwmutex_write_try_lock(this->rwmutex) == CC_OK; 00047 } 00048 int writeUnlock(void) { 00049 return cc_rwmutex_write_unlock(this->rwmutex) == CC_OK ? 0 : 1; 00050 } 00051 00052 int readLock(void) { 00053 return cc_rwmutex_read_lock(this->rwmutex) == CC_OK ? 0 : 1; 00054 } 00055 int tryReadLock(void) { 00056 return cc_rwmutex_read_try_lock(this->rwmutex) == CC_OK; 00057 } 00058 int readUnlock(void) { 00059 return cc_rwmutex_read_unlock(this->rwmutex) == CC_OK ? 0 : 1; 00060 } 00061 00062 private: 00063 cc_rwmutex * rwmutex; 00064 }; 00065 00066 #endif // !COIN_SBRWMUTEX_H
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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