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/*
* Copyright (c) 2010 SURFnet bv
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
MutexFactory.cpp
This factory produces OS specific mutex objects
*****************************************************************************/
#include "config.h"
#include "MutexFactory.h"
#include "osmutex.h"
#include <memory>
#include <stddef.h>
/*****************************************************************************
Mutex implementation
*****************************************************************************/
// Constructor
Mutex::Mutex()
{
isValid = (MutexFactory::i()->CreateMutex(&handle) == CKR_OK);
}
// Destructor
Mutex::~Mutex()
{
if (isValid)
{
MutexFactory::i()->DestroyMutex(handle);
}
}
// Lock the mutex
bool Mutex::lock()
{
return (isValid && (MutexFactory::i()->LockMutex(handle) == CKR_OK));
}
// Unlock the mutex
void Mutex::unlock()
{
if (isValid)
{
MutexFactory::i()->UnlockMutex(handle);
}
}
/*****************************************************************************
MutexLocker implementation
*****************************************************************************/
// Constructor
MutexLocker::MutexLocker(Mutex* inMutex)
{
mutex = inMutex;
if (mutex != NULL) mutex->lock();
}
// Destructor
MutexLocker::~MutexLocker()
{
if (mutex != NULL) mutex->unlock();
}
/*****************************************************************************
MutexFactory implementation
*****************************************************************************/
// Constructor
MutexFactory::MutexFactory()
{
createMutex = OSCreateMutex;
destroyMutex = OSDestroyMutex;
lockMutex = OSLockMutex;
unlockMutex = OSUnlockMutex;
enabled = true;
}
// Destructor
MutexFactory::~MutexFactory()
{
}
// Return the one-and-only instance
MutexFactory* MutexFactory::i()
{
if (!instance.get())
{
instance.reset(new MutexFactory());
}
return instance.get();
}
// Get a mutex instance
Mutex* MutexFactory::getMutex()
{
return new Mutex();
}
// Recycle a mutex instance
void MutexFactory::recycleMutex(Mutex* mutex)
{
if (mutex != NULL) delete mutex;
}
// Set the function pointers
void MutexFactory::setCreateMutex(CK_CREATEMUTEX inCreateMutex)
{
createMutex = inCreateMutex;
}
void MutexFactory::setDestroyMutex(CK_DESTROYMUTEX inDestroyMutex)
{
destroyMutex = inDestroyMutex;
}
void MutexFactory::setLockMutex(CK_LOCKMUTEX inLockMutex)
{
lockMutex = inLockMutex;
}
void MutexFactory::setUnlockMutex(CK_UNLOCKMUTEX inUnlockMutex)
{
unlockMutex = inUnlockMutex;
}
void MutexFactory::enable()
{
enabled = true;
}
void MutexFactory::disable()
{
enabled = false;
}
CK_RV MutexFactory::CreateMutex(CK_VOID_PTR_PTR newMutex)
{
if (!enabled) return CKR_OK;
return (this->createMutex)(newMutex);
}
CK_RV MutexFactory::DestroyMutex(CK_VOID_PTR mutex)
{
if (!enabled) return CKR_OK;
return (this->destroyMutex)(mutex);
}
CK_RV MutexFactory::LockMutex(CK_VOID_PTR mutex)
{
if (!enabled) return CKR_OK;
return (this->lockMutex)(mutex);
}
CK_RV MutexFactory::UnlockMutex(CK_VOID_PTR mutex)
{
if (!enabled) return CKR_OK;
return (this->unlockMutex)(mutex);
}
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