Package org.eclipse.jgit.internal.storage.file

Class WindowCache.StrongRef

java.lang.Object

org.eclipse.jgit.internal.storage.file.WindowCache.StrongRef

All Implemented Interfaces:

WindowCache.PageRef<ByteWindow>

Enclosing class:

WindowCache

private static class WindowCache.StrongRef
extends java.lang.Object
implements WindowCache.PageRef<ByteWindow>

A strong reference wrapped around a cached object.

Field Summary

Fields

Modifier and Type	Field	Description
private long	lastAccess
private Pack	pack
private long	position
private WindowCache.CleanupQueue	queue
private ByteWindow	referent
private int	size

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StrongRef(Pack pack, long position, ByteWindow v, WindowCache.CleanupQueue queue)

Method Summary

Modifier and Type	Method	Description
ByteWindow	get()	Returns this reference object's referent.
long	getLastAccess()	Get pseudo time of last access to this cache page
Pack	getPack()	Get the Pack the referenced cache page is allocated for
long	getPosition()	Get the position of the referenced cache page in the Pack
int	getSize()	Get size of cache page
boolean	isStrongRef()	Whether this is a strong reference.
boolean	kill()	Kill this ref
void	setLastAccess(long time)	Set pseudo time of last access to this cache page

Methods inherited from class java.lang.Object

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

Field Detail

referent

private ByteWindow referent

pack

private final Pack pack

position

private final long position

size

private final int size

lastAccess

private long lastAccess

queue

private WindowCache.CleanupQueue queue

Constructor Detail

StrongRef

protected StrongRef(Pack pack,
                    long position,
                    ByteWindow v,
                    WindowCache.CleanupQueue queue)

Method Detail

getPack

public Pack getPack()

Description copied from interface: WindowCache.PageRef

Get the Pack the referenced cache page is allocated for

Specified by:

getPack in interface WindowCache.PageRef<ByteWindow>

Returns:

the Pack the referenced cache page is allocated for

getPosition

public long getPosition()

Description copied from interface: WindowCache.PageRef

Get the position of the referenced cache page in the Pack

Specified by:

getPosition in interface WindowCache.PageRef<ByteWindow>

Returns:

the position of the referenced cache page in the Pack

getSize

public int getSize()

Description copied from interface: WindowCache.PageRef

Get size of cache page

Specified by:

getSize in interface WindowCache.PageRef<ByteWindow>

Returns:

size of cache page

getLastAccess

public long getLastAccess()

Description copied from interface: WindowCache.PageRef

Get pseudo time of last access to this cache page

Specified by:

getLastAccess in interface WindowCache.PageRef<ByteWindow>

Returns:

pseudo time of last access to this cache page

setLastAccess

public void setLastAccess(long time)

Description copied from interface: WindowCache.PageRef

Set pseudo time of last access to this cache page

Specified by:

setLastAccess in interface WindowCache.PageRef<ByteWindow>

Parameters:

time - pseudo time of last access to this cache page

get

public ByteWindow get()

Description copied from interface: WindowCache.PageRef

Returns this reference object's referent. If this reference object has been cleared, either by the program or by the garbage collector, then this method returns null.

Specified by:

get in interface WindowCache.PageRef<ByteWindow>

Returns:

The object to which this reference refers, or null if this reference object has been cleared

kill

public boolean kill()

Description copied from interface: WindowCache.PageRef

Kill this ref

Specified by:

kill in interface WindowCache.PageRef<ByteWindow>

Returns:

true if this reference object was successfully killed; false if it was already killed

isStrongRef

public boolean isStrongRef()

Description copied from interface: WindowCache.PageRef

Whether this is a strong reference.

Specified by:

isStrongRef in interface WindowCache.PageRef<ByteWindow>

Returns:

true if this is a strong reference