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SbMutex.h

00001 #ifndef COIN_SBMUTEX_H
00002 #define COIN_SBMUTEX_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/SbBasic.h>
00028 #include <Inventor/C/threads/mutex.h>
00029 
00030 class SbMutex {
00031 public:
00032   SbMutex(void) { this->mutex = cc_mutex_construct(); }
00033   ~SbMutex(void) { cc_mutex_destruct(this->mutex); }
00034 
00035   int lock(void) {
00036     return cc_mutex_lock(this->mutex) == CC_OK ? 0 : 1;
00037   }
00038   SbBool tryLock(void) {
00039     return cc_mutex_try_lock(this->mutex) == CC_OK;
00040   }
00041   int unlock(void) {
00042     return cc_mutex_unlock(this->mutex) == CC_OK ? 0 : 1;
00043   }
00044 
00045 private:
00046   // FIXME: we need access to C mutex structur. Should we use friend,
00047   // or should we add a new public method to get to this structure?
00048   // pederb, 2002-06-26
00049   friend class SbCondVar;
00050   cc_mutex * mutex;
00051 };
00052 
00053 
00054 #ifndef COIN_INTERNAL
00055 // For TGS Inventor compile-time compatibility.
00056 #include <Inventor/threads/SbThreadAutoLock.h>
00057 #endif // COIN_INTERNAL
00058 
00059 #endif // !COIN_SBMUTEX_H

Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.

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