Package org.eclipse.jgit.internal.storage.dfs

Class DeltaBaseCache

java.lang.Object

org.eclipse.jgit.internal.storage.dfs.DeltaBaseCache

final class DeltaBaseCache
extends java.lang.Object

Caches recently used objects for DfsReader.

This cache is not thread-safe. Each reader should have its own cache.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	DeltaBaseCache.Entry

Field Summary

Fields

Modifier and Type	Field	Description
private int	curByteCount
private DeltaBaseCache.Entry	lruHead
private DeltaBaseCache.Entry	lruTail
private static int	MASK_BITS
private int	maxByteCount
private DeltaBaseCache.Entry[]	table
private static int	TABLE_BITS

Constructor Summary

Constructors

Constructor	Description
DeltaBaseCache(int maxBytes)
DeltaBaseCache(DfsReader reader)

Method Summary

Modifier and Type	Method	Description
(package private) DeltaBaseCache.Entry	get(DfsStreamKey key, long position)
(package private) int	getMemoryUsed()
(package private) int	getMemoryUsedByLruChainForTest()
(package private) int	getMemoryUsedByTableForTest()
private static int	hash(long position)
private void	lruPushHead(DeltaBaseCache.Entry e)
private void	lruRemove(DeltaBaseCache.Entry e)
private void	moveToHead(DeltaBaseCache.Entry e)
(package private) void	put(DfsStreamKey key, long offset, int objectType, byte[] data)
private void	releaseMemory()
private void	removeFromTable(DeltaBaseCache.Entry e)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TABLE_BITS

private static final int TABLE_BITS

See Also:

Constant Field Values

MASK_BITS

private static final int MASK_BITS

See Also:

Constant Field Values

maxByteCount

private int maxByteCount

curByteCount

private int curByteCount

table

private final DeltaBaseCache.Entry[] table

lruHead

private DeltaBaseCache.Entry lruHead

lruTail

private DeltaBaseCache.Entry lruTail

Constructor Detail

DeltaBaseCache

DeltaBaseCache(DfsReader reader)

DeltaBaseCache

DeltaBaseCache(int maxBytes)

Method Detail

hash

private static int hash(long position)

get

DeltaBaseCache.Entry get(DfsStreamKey key,
                         long position)

put

void put(DfsStreamKey key,
         long offset,
         int objectType,
         byte[] data)

releaseMemory

private void releaseMemory()

removeFromTable

private void removeFromTable(DeltaBaseCache.Entry e)

moveToHead

private void moveToHead(DeltaBaseCache.Entry e)

lruRemove

private void lruRemove(DeltaBaseCache.Entry e)

lruPushHead

private void lruPushHead(DeltaBaseCache.Entry e)

getMemoryUsed

int getMemoryUsed()

getMemoryUsedByLruChainForTest

int getMemoryUsedByLruChainForTest()

getMemoryUsedByTableForTest

int getMemoryUsedByTableForTest()