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#ifndef COIN_SBRWMUTEX_H
#define COIN_SBRWMUTEX_H
/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) 1998-2004 by Systems in Motion. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Systems in Motion about acquiring
* a Coin Professional Edition License.
*
* See <URL:http://www.coin3d.org/> for more information.
*
* Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
* <URL:http://www.sim.no/>.
*
\**************************************************************************/
#include <Inventor/C/threads/rwmutex.h>
class SbRWMutex {
public:
enum Precedence {
READ_PRECEDENCE,
WRITE_PRECEDENCE
};
SbRWMutex(Precedence policy) {
this->rwmutex = cc_rwmutex_construct_etc(
(policy == WRITE_PRECEDENCE)? CC_WRITE_PRECEDENCE : CC_READ_PRECEDENCE);
}
~SbRWMutex(void) { cc_rwmutex_destruct(this->rwmutex); }
int writeLock(void) {
return cc_rwmutex_write_lock(this->rwmutex) == CC_OK ? 0 : 1;
}
SbBool tryWriteLock(void) {
return cc_rwmutex_write_try_lock(this->rwmutex) == CC_OK;
}
int writeUnlock(void) {
return cc_rwmutex_write_unlock(this->rwmutex) == CC_OK ? 0 : 1;
}
int readLock(void) {
return cc_rwmutex_read_lock(this->rwmutex) == CC_OK ? 0 : 1;
}
int tryReadLock(void) {
return cc_rwmutex_read_try_lock(this->rwmutex) == CC_OK;
}
int readUnlock(void) {
return cc_rwmutex_read_unlock(this->rwmutex) == CC_OK ? 0 : 1;
}
private:
cc_rwmutex * rwmutex;
};
#endif // !COIN_SBRWMUTEX_H
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