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//
// RWLock_WINCE.h
//
// Library: Foundation
// Package: Threading
// Module: RWLock
//
// Definition of the RWLockImpl class for WINCE.
//
// Copyright (c) 2009-2010, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_RWLock_WINCE_INCLUDED
#define Foundation_RWLock_WINCE_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Exception.h"
#include "Poco/UnWindows.h"
namespace Poco {
class Foundation_API RWLockImpl
/// This implementation is based on the one from Stone Steps Inc,
/// licensed under the BSD license.
/// http://forums.stonesteps.ca/thread.asp?t=105
///
/// Note that with this implementation, writers always take
/// precedence over readers.
{
protected:
RWLockImpl();
~RWLockImpl();
void readLockImpl();
bool tryReadLockImpl(DWORD timeout = 1);
void writeLockImpl();
bool tryWriteLockImpl(DWORD timeout = 1);
void unlockImpl();
private:
DWORD _readerCount;
DWORD _readerWaiting;
DWORD _writerCount;
DWORD _writerWaiting;
HANDLE _readerGreen;
HANDLE _writerGreen;
CRITICAL_SECTION _cs;
bool _writeLock;
};
} // namespace Poco
#endif // Foundation_RWLock_WINCE_INCLUDED
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