2012-04-23 03:14:34 +02:00
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//
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// RWLock_WINCE.h
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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 WINCE.
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//
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// Copyright (c) 2009-2010, 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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2012-04-23 03:14:34 +02:00
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//
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#ifndef Foundation_RWLock_WINCE_INCLUDED
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#define Foundation_RWLock_WINCE_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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/// This implementation is based on the one from Stone Steps Inc,
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/// licensed under the BSD license.
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/// http://forums.stonesteps.ca/thread.asp?t=105
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///
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/// Note that with this implementation, writers always take
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/// precedence over readers.
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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(DWORD timeout = 1);
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void writeLockImpl();
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bool tryWriteLockImpl(DWORD timeout = 1);
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void unlockImpl();
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private:
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DWORD _readerCount;
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DWORD _readerWaiting;
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DWORD _writerCount;
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DWORD _writerWaiting;
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HANDLE _readerGreen;
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HANDLE _writerGreen;
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CRITICAL_SECTION _cs;
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bool _writeLock;
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};
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} // namespace Poco
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#endif // Foundation_RWLock_WINCE_INCLUDED
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