Package org.eclipse.jgit.internal.storage.pack

Class DeltaWindow

java.lang.Object

org.eclipse.jgit.internal.storage.pack.DeltaWindow

final class DeltaWindow
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	DeltaWindow.ArrayStream
(package private) static class	DeltaWindow.ZipStream

Field Summary

Fields

Modifier and Type	Field	Description
private DeltaWindowEntry	bestBase	If we have chosen a base, the window entry it was created from.
private long	bytesPerUnit
private long	bytesProcessed
private PackConfig	config
private int	cur
private java.util.zip.Deflater	deflater	Used to compress cached deltas.
private java.lang.Object	deltaBuf
private DeltaCache	deltaCache
private int	deltaLen
private int	end
private long	loaded	Amount of memory we have loaded right now.
private int	maxDepth	Maximum depth we should create for any delta chain.
private long	maxMemory	Maximum number of bytes to admit to the window at once.
private ProgressMonitor	monitor
private static boolean	NEXT_RES
private static boolean	NEXT_SRC
private ObjectReader	reader
private DeltaWindowEntry	res	Window entry of the object we are currently considering.
private ObjectToPack[]	toSearch

Constructor Summary

Constructors

Constructor	Description
DeltaWindow(PackConfig pc, DeltaCache dc, ObjectReader or, ProgressMonitor pm, long bpu, ObjectToPack[] in, int beginIndex, int endIndex)

Method Summary

Modifier and Type	Method	Description
private byte[]	buffer(DeltaWindowEntry ent)
private void	cacheDelta(ObjectToPack srcObj, ObjectToPack resObj)
private void	checkLoadable(DeltaWindowEntry ent, long need)
private void	clear(DeltaWindowEntry ent)
private void	clearWindowOnTypeSwitch()
private static int	deflateBound(int insz)
private java.util.zip.Deflater	deflater()
private boolean	delta(DeltaWindowEntry src)
private int	deltaSizeLimit(DeltaWindowEntry src)
private static long	estimateIndexSize(DeltaWindowEntry ent)
private static long	estimateSize(ObjectToPack ent)
private DeltaIndex	index(DeltaWindowEntry ent)
private void	keepInWindow()
(package private) DeltaTask.Slice	remaining()
(package private) void	search()
private void	searchInWindow()
private void	selectDeltaBase(DeltaWindowEntry src, java.io.OutputStream delta)
(package private) boolean	tryStealWork(DeltaTask.Slice s)

Methods inherited from class java.lang.Object

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

Field Detail

NEXT_RES

private static final boolean NEXT_RES

See Also:

Constant Field Values

NEXT_SRC

private static final boolean NEXT_SRC

See Also:

Constant Field Values

config

private final PackConfig config

deltaCache

private final DeltaCache deltaCache

reader

private final ObjectReader reader

monitor

private final ProgressMonitor monitor

bytesPerUnit

private final long bytesPerUnit

bytesProcessed

private long bytesProcessed

maxMemory

private final long maxMemory

Maximum number of bytes to admit to the window at once.

maxDepth

private final int maxDepth

Maximum depth we should create for any delta chain.

toSearch

private final ObjectToPack[] toSearch

cur

private int cur

end

private int end

loaded

private long loaded

Amount of memory we have loaded right now.

res

private DeltaWindowEntry res

Window entry of the object we are currently considering.

bestBase

private DeltaWindowEntry bestBase

If we have chosen a base, the window entry it was created from.

deltaLen

private int deltaLen

deltaBuf

private java.lang.Object deltaBuf

deflater

private java.util.zip.Deflater deflater

Used to compress cached deltas.

Constructor Detail

DeltaWindow

DeltaWindow(PackConfig pc,
            DeltaCache dc,
            ObjectReader or,
            ProgressMonitor pm,
            long bpu,
            ObjectToPack[] in,
            int beginIndex,
            int endIndex)

Method Detail

remaining

DeltaTask.Slice remaining()

tryStealWork

boolean tryStealWork(DeltaTask.Slice s)

search

void search()
     throws java.io.IOException

Throws:

java.io.IOException

estimateSize

private static long estimateSize(ObjectToPack ent)

estimateIndexSize

private static long estimateIndexSize(DeltaWindowEntry ent)

clearWindowOnTypeSwitch

private void clearWindowOnTypeSwitch()

clear

private void clear(DeltaWindowEntry ent)

searchInWindow

private void searchInWindow()
                     throws java.io.IOException

Throws:

java.io.IOException

delta

private boolean delta(DeltaWindowEntry src)
               throws java.io.IOException

Throws:

java.io.IOException

selectDeltaBase

private void selectDeltaBase(DeltaWindowEntry src,
                             java.io.OutputStream delta)

deltaSizeLimit

private int deltaSizeLimit(DeltaWindowEntry src)

cacheDelta

private void cacheDelta(ObjectToPack srcObj,
                        ObjectToPack resObj)

deflateBound

private static int deflateBound(int insz)

keepInWindow

private void keepInWindow()

index

private DeltaIndex index(DeltaWindowEntry ent)
                  throws MissingObjectException,
                         IncorrectObjectTypeException,
                         java.io.IOException,
                         LargeObjectException

Throws:

MissingObjectException

IncorrectObjectTypeException

java.io.IOException

LargeObjectException

buffer

private byte[] buffer(DeltaWindowEntry ent)
               throws MissingObjectException,
                      IncorrectObjectTypeException,
                      java.io.IOException,
                      LargeObjectException

Throws:

MissingObjectException

IncorrectObjectTypeException

java.io.IOException

LargeObjectException

checkLoadable

private void checkLoadable(DeltaWindowEntry ent,
                           long need)

deflater

private java.util.zip.Deflater deflater()