OwnableSynchronizerObjectBufferStandard.hpp

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 * Copyright (c) 1991, 2014 IBM Corp. and others
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 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
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 * or the Apache License, Version 2.0 which accompanies this distribution and
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 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
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#ifndef OWNABLESYNCHRONIZEROBJECTBUFFERSTANDARD_HPP_
#define OWNABLESYNCHRONIZEROBJECTBUFFERSTANDARD_HPP_

#include "j9.h"
#include "j9cfg.h"

#include "OwnableSynchronizerObjectBuffer.hpp"

/**
 * A per-thread buffer of recently allocated objects of type or subtype of java.util.concurrent.locks.AbstractOwnableSynchronizer.
 * The buffer is periodically flushed to the global list. 
 */
class MM_OwnableSynchronizerObjectBufferStandard : public MM_OwnableSynchronizerObjectBuffer
{
private:
	UDATA _ownableSynchronizerObjectListIndex; /* current region list index */
protected:
public:
	
private:
protected:

	virtual bool initialize(MM_EnvironmentBase *env);
	virtual void tearDown(MM_EnvironmentBase *env);

	/**
	 * Flush the contents of the buffer to the appropriate global buffers.
	 * Subclasses must override.
	 * @param env[in] the current thread
	 */
	virtual void flushImpl(MM_EnvironmentBase* env);
	
public:
	static MM_OwnableSynchronizerObjectBufferStandard *newInstance(MM_EnvironmentBase *env);
	/**
	 * Construct a new buffer.
	 * @param extensions[in] the GC extensions
	 * @param maxObjectCount the maximum number of objects permitted before a forced flush 
	 */
	MM_OwnableSynchronizerObjectBufferStandard(MM_GCExtensions *extensions, UDATA maxObjectCount);
};

#endif /* OWNABLESYNCHRONIZEROBJECTBUFFERSTANDARD_HPP_ */