1 #ifndef COIN_SBMUTEX_H 2 #define COIN_SBMUTEX_H 3 4 /**************************************************************************\ 5 * Copyright (c) Kongsberg Oil & Gas Technologies AS 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * Neither the name of the copyright holder nor the names of its 20 * contributors may be used to endorse or promote products derived from 21 * this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 \**************************************************************************/ 35 36 #include <Inventor/SbBasic.h> 37 #include <Inventor/C/threads/mutex.h> 38 39 class SbMutex { 40 public: SbMutex(void)41 SbMutex(void) { this->mutex = cc_mutex_construct(); } ~SbMutex()42 ~SbMutex() { cc_mutex_destruct(this->mutex); } 43 lock(void)44 int lock(void) { 45 cc_mutex_lock(this->mutex); 46 /* Useless return, here just for compatibility with TGS' 47 SbThreadMutex API: */ 48 return 0; 49 } 50 tryLock(void)51 SbBool tryLock(void) { 52 return cc_mutex_try_lock(this->mutex) == CC_OK; 53 } 54 unlock(void)55 int unlock(void) { 56 cc_mutex_unlock(this->mutex); 57 /* Useless return, here just for compatibility with TGS' 58 SbThreadMutex API: */ 59 return 0; 60 } 61 62 private: 63 // FIXME: we need access to C mutex structur. Should we use friend, 64 // or should we add a new public method to get to this structure? 65 // pederb, 2002-06-26 66 friend class SbCondVar; 67 cc_mutex * mutex; 68 }; 69 70 71 #ifndef COIN_INTERNAL 72 // For TGS Inventor compile-time compatibility. 73 #include <Inventor/threads/SbThreadAutoLock.h> 74 #endif // COIN_INTERNAL 75 76 #endif // !COIN_SBMUTEX_H 77