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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
/*=========================================================================
*
* Portions of this file are subject to the VTK Toolkit Version 3 copyright.
*
* Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
*
* For complete copyright, license and disclaimer of warranty information
* please refer to the NOTICE file at the top of the ITK source tree.
*
*=========================================================================*/
#include "itkSimpleFastMutexLock.h"
namespace itk
{
// Construct a new SimpleMutexLock
SimpleFastMutexLock::SimpleFastMutexLock()
{
//this->MutexLock = CreateMutex( ITK_NULLPTR, FALSE, ITK_NULLPTR );
InitializeCriticalSection(&m_FastMutexLock);
}
// Destruct the SimpleMutexVariable
SimpleFastMutexLock::~SimpleFastMutexLock()
{
DeleteCriticalSection(&m_FastMutexLock);
}
// Lock the FastMutexLock
void SimpleFastMutexLock::Lock() const
{
EnterCriticalSection(&m_FastMutexLock);
}
// Non-blocking TryLock the FastMutexLock
bool SimpleFastMutexLock::TryLock() const
{
const bool lockCaptured = TryEnterCriticalSection(&m_FastMutexLock);
/*
* non-blocking lock of mutex
* - if mutex is not already locked, you will obtain the lock & own the mutex, and return non-zero immediately
* - if mutex is already locked, TryEnterCriticalSection() will return immediately wth return value 0
*/
return lockCaptured;
}
// Unlock the FastMutexLock
void SimpleFastMutexLock::Unlock() const
{
LeaveCriticalSection(&m_FastMutexLock);
}
} //end namespace itk
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