93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
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/*=============================================================================
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Copyright (C) 2012 Allied Vision Technologies. All Rights Reserved.
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Redistribution of this file, in original or modified form, without
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prior written consent of Allied Vision Technologies is prohibited.
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-------------------------------------------------------------------------------
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File: Semaphore.cpp
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Description: Implementation of an semaphore class.
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Intended for use in the implementation of Vimba CPP API.
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-------------------------------------------------------------------------------
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF TITLE,
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NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=============================================================================*/
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#include <math.h>
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#include <VimbaCPP/Source/Semaphore.h>
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#include <VimbaCPP/Include/LoggerDefines.h>
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namespace AVT {
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namespace VmbAPI {
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Semaphore::Semaphore( int nInit, int nMax )
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#ifdef WIN32
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: m_hSemaphore( NULL )
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#endif
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{
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#ifdef WIN32
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m_hSemaphore = CreateSemaphore( NULL, nInit, nMax, NULL );
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if( NULL == m_hSemaphore )
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{
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LOG_FREE_TEXT( "Could not create semaphore." );
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throw std::bad_alloc();
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}
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#else
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sem_init( &m_Semaphore, false, (unsigned int)nInit );
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#endif
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}
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Semaphore::Semaphore( const Semaphore& )
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{
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// No compiler generated copy ctor
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}
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Semaphore& Semaphore::operator=( const Semaphore& )
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{
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// No assignment operator
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return *this;
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}
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Semaphore::~Semaphore()
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{
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#ifdef WIN32
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CloseHandle( m_hSemaphore );
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#else
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sem_destroy( &m_Semaphore );
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#endif
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}
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void Semaphore::Acquire()
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{
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#ifdef WIN32
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WaitForSingleObject( m_hSemaphore, INFINITE );
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#else
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sem_wait( &m_Semaphore );
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#endif
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}
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void Semaphore::Release()
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{
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#ifdef WIN32
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ReleaseSemaphore( m_hSemaphore, 1, NULL );
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#else
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sem_post( &m_Semaphore );
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#endif
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}
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} //namespace VmbAPI
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} //namespace AVT
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