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com.tangosol.net.cache
Class CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor

java.lang.Object
com.tangosol.net.cache.CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor

All Implemented Interfaces:

BinaryLongMap.EntryVisitor, MultiBinaryLongMap.SafeEntryVisitor

Enclosing class:

CompactSerializationCache.InternalEvictionPolicy

protected class CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor

extends java.lang.Object

implements MultiBinaryLongMap.SafeEntryVisitor

SafeEntryVisitor implementation that calculates the set of eviction candidates.

The EvictionVisitor is to be applied to Entries of a BinaryLongMap that associates cache keys to their size in units (as determined by the configured unit-calculator).

Field Summary

protected long	f_cUnitsToEvict The minimum number of units to evict.
protected java.util.SortedSet	f_setEvicting The Map containing the keys which are candidates for eviction, mapped to their size in units.
protected long	m_cUnitsEvicting The number of units occupied by the entries in the eviction set.
protected long	m_lKeepThreshold The weight of the lightest entry that we have decided to keep.

Constructor Summary

CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor(long cLowUnits)
Construct an EvictionVisitor to identify the set of keys to evict from the cache in order to prune the cache down to the specified low-units threshold

Method Summary

void	visit(BinaryLongMap.Entry entry) Visit the specified entry.

Field Detail

f_setEvicting

protected final java.util.SortedSet f_setEvicting

The Map containing the keys which are candidates for eviction, mapped to their size in units.

f_cUnitsToEvict

protected final long f_cUnitsToEvict

The minimum number of units to evict.

m_cUnitsEvicting

protected long m_cUnitsEvicting

The number of units occupied by the entries in the eviction set. Used during the iteration (evict-set calculation) only.

m_lKeepThreshold

protected long m_lKeepThreshold

The weight of the lightest entry that we have decided to keep. All of the entries to evict will be lighter than this threshold.

Constructor Detail

CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor

public CompactSerializationCache.InternalEvictionPolicy.EvictionVisitor(long cLowUnits)

Construct an EvictionVisitor to identify the set of keys to evict from the cache in order to prune the cache down to the specified low-units threshold

Parameters:

cLowUnits - the low-units threshold to prune the cache to

Method Detail

visit

public void visit(BinaryLongMap.Entry entry)

Visit the specified entry.

Specified by:

visit in interface BinaryLongMap.EntryVisitor

Parameters:

entry - the entry

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