71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
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/**
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*******************************************************************************
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* @file etk/Semaphore.Generic.cpp
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* @brief Ewol Tool Kit : basic semaphore system (Sources) ==> Pthread implementation
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* @author Edouard DUPIN
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* @date 15/08/2012
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* @par Project
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* Ewol TK
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*
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* @par Copyright
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* Copyright 2011 Edouard DUPIN, all right reserved
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*
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* This software is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY.
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*
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* Licence summary :
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* You can modify and redistribute the sources code and binaries.
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* You can send me the bug-fix
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*
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* Term of the licence in in the file licence.txt.
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*
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*******************************************************************************
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*/
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#include <etk/Semaphore.h>
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#include <etk/DebugInternal.h>
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etk::Semaphore::Semaphore(uint32_t nbBasicElement, uint32_t nbMessageMax)
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{
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// create interface mutex :
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m_semaphore = CreateSemaphore(NULL, nbBasicElement, nbMessageMax, NULL);
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TK_ASSERT(m_semaphore != 0, "Error creating SEMAPHORE ...");
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}
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etk::Semaphore::~Semaphore(void)
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{
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CloseHandle(m_semaphore);
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}
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uint32_t etk::Semaphore::GetCount(void)
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{
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LONG tmpData = 0;
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ReleaseSemaphore(m_semaphore, 0, &tmpData);
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return tmpData;
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}
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void etk::Semaphore::Post(void)
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{
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ReleaseSemaphore(m_semaphore, 1, NULL);
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}
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void etk::Semaphore::Wait(void)
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{
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WaitForSingleObject(m_semaphore, INFINITE);
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}
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bool etk::Semaphore::Wait(uint32_t timeOutInUs)
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{
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DWORD result = WaitForSingleObject(m_semaphore, timeOutInUs);
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if (result == WAIT_FAILED) {
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TK_ERROR("Failed to wait for semaphore ");
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return false;
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} else {
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return result == WAIT_OBJECT_0;
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}
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}
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