ScavengerJavaStats.hpp

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/**
 * @file
 * @ingroup GC_Stats
 */

#if !defined(SCAVENGERSTATSJAVA_HPP_)
#define SCAVENGERSTATSJAVA_HPP_

#include "j9.h"
#include "j9cfg.h"
#include "j9port.h"
#include "j9consts.h"
#include "modron.h"
#include "modronopt.h"

#include "Base.hpp"
#include "ReferenceStats.hpp"

/**
 * Storage for statistics relevant to a scavenging (semi-space copying) collector.
 * @ingroup GC_Stats
 */
class MM_ScavengerJavaStats
{
public:

	UDATA _unfinalizedCandidates;  /**< unfinalized objects that are candidates to be finalized visited this cycle */
	UDATA _unfinalizedEnqueued;  /**< unfinalized objects that are enqueued during this cycle (MUST be less than or equal _unfinalizedCandidates) */

	UDATA _ownableSynchronizerCandidates;  /**< number of ownable synchronizer objects visited this cycle */
	UDATA _ownableSynchronizerTotalSurvived;	/**< number of ownable synchronizer objects survived this cycle */
	UDATA _ownableSynchronizerNurserySurvived; /**< number of ownable synchronizer objects survived this cycle in Nursery Space */

	MM_ReferenceStats _weakReferenceStats;  /**< Weak reference stats for the cycle */
	MM_ReferenceStats _softReferenceStats;  /**< Soft reference stats for the cycle */
	MM_ReferenceStats _phantomReferenceStats;  /**< Phantom reference stats for the cycle */

	UDATA _monitorReferenceCleared; /**< The number of monitor references that have been cleared during scavenge */
	UDATA _monitorReferenceCandidates; /**< The number of monitor references that have been visited in monitor table during scavenge */

protected:

private:

public:

	void clear();
	/* clear only OwnableSynchronizerObject related data */
	void clearOwnableSynchronizerCounts();
	/* merge only OwnableSynchronizerObject related data */
	void mergeOwnableSynchronizerCounts(MM_ScavengerJavaStats *statsToMerge);
	
	MMINLINE void 
	updateOwnableSynchronizerNurseryCounts(UDATA survivedCount)
	{
		_ownableSynchronizerNurserySurvived += survivedCount;
	}
		
	MM_ScavengerJavaStats();


};

#endif /* SCAVENGERSTATSJAVA_HPP_ */