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//
// Semaphore_WIN32.cpp
//
// Library: Foundation
// Package: Threading
// Module: Semaphore
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Semaphore_WIN32.h"
namespace Poco {
SemaphoreImpl::SemaphoreImpl(int n, int max)
{
poco_assert (n >= 0 && max > 0 && n <= max);
_sema = CreateSemaphoreW(NULL, n, max, NULL);
if (!_sema)
{
throw SystemException("cannot create semaphore");
}
}
SemaphoreImpl::~SemaphoreImpl()
{
CloseHandle(_sema);
}
void SemaphoreImpl::waitImpl()
{
switch (WaitForSingleObject(_sema, INFINITE))
{
case WAIT_OBJECT_0:
return;
default:
throw SystemException("wait for semaphore failed");
}
}
bool SemaphoreImpl::waitImpl(long milliseconds)
{
switch (WaitForSingleObject(_sema, milliseconds + 1))
{
case WAIT_TIMEOUT:
return false;
case WAIT_OBJECT_0:
return true;
default:
throw SystemException("wait for semaphore failed");
}
}
} // namespace Poco
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