2012-04-29 20:52:25 +02:00
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//
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// RWLock_WIN32.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/RWLock_WIN32.h#1 $
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//
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// Library: Foundation
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// Package: Threading
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// Module: RWLock
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//
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// Definition of the RWLockImpl class for WIN32.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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2014-05-04 21:02:42 +02:00
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// SPDX-License-Identifier: BSL-1.0
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2012-04-29 20:52:25 +02:00
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//
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#ifndef Foundation_RWLock_WIN32_INCLUDED
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#define Foundation_RWLock_WIN32_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/Exception.h"
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#include "Poco/UnWindows.h"
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namespace Poco {
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class Foundation_API RWLockImpl
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{
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protected:
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RWLockImpl();
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~RWLockImpl();
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void readLockImpl();
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bool tryReadLockImpl();
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void writeLockImpl();
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bool tryWriteLockImpl();
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void unlockImpl();
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private:
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void addWriter();
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void removeWriter();
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DWORD tryReadLockOnce();
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HANDLE _mutex;
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HANDLE _readEvent;
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HANDLE _writeEvent;
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unsigned _readers;
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unsigned _writersWaiting;
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unsigned _writers;
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};
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} // namespace Poco
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#endif // Foundation_RWLock_WIN32_INCLUDED
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