68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/Win32/SemaphoreImpl.hpp>
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#include <Nazara/Core/Config.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <limits>
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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SemaphoreImpl::SemaphoreImpl(unsigned int count)
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{
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m_semaphore = CreateSemaphoreW(nullptr, count, std::numeric_limits<LONG>::max(), nullptr);
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if (!m_semaphore)
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NazaraError("Failed to create semaphore: " + Error::GetLastSystemError());
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}
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SemaphoreImpl::~SemaphoreImpl()
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{
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CloseHandle(m_semaphore);
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}
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unsigned int SemaphoreImpl::GetCount() const
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{
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LONG count;
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ReleaseSemaphore(m_semaphore, 0, &count);
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return count;
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}
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void SemaphoreImpl::Post()
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{
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#if NAZARA_CORE_SAFE
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if (!ReleaseSemaphore(m_semaphore, 1, nullptr))
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NazaraError("Failed to release semaphore: " + Error::GetLastSystemError());
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#else
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ReleaseSemaphore(m_semaphore, 1, nullptr);
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#endif
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}
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void SemaphoreImpl::Wait()
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{
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#if NAZARA_CORE_SAFE
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if (WaitForSingleObject(m_semaphore, INFINITE) == WAIT_FAILED)
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NazaraError("Failed to wait for semaphore: " + Error::GetLastSystemError());
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#else
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WaitForSingleObject(m_semaphore, INFINITE);
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#endif
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}
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bool SemaphoreImpl::Wait(UInt32 timeout)
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{
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#if NAZARA_CORE_SAFE
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DWORD result = WaitForSingleObject(m_semaphore, timeout);
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if (result == WAIT_FAILED)
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{
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NazaraError("Failed to wait for semaphore: " + Error::GetLastSystemError());
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return false;
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}
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else
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return result == WAIT_OBJECT_0;
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#else
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return WaitForSingleObject(m_semaphore, timeout) == WAIT_OBJECT_0;
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#endif
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}
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}
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