Package com.tagtraum.core.util

Class ResourceLock<L extends Lock>

java.lang.Object

com.tagtraum.core.util.ResourceLock<L>

public class ResourceLock<L extends Lock>
extends Object

Allows locking of a given resource. The resources must properly support the Object.equals(Object) method. One usage for this class is the exclusive locking of Files or Paths for different threads as FileChannel.lock() does not support intra-JVM locking.

Author:

Hendrik Schreiber

Constructor Summary

Constructors

Constructor	Description
ResourceLock()

Method Summary

Modifier and Type	Method	Description
protected L	createLock(Object resource)
L	getLock(Object resource)	Get a lock object (not yet locked) for a given resource.
L	lock(Object resource)	Obtain an exclusive lock for the given resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceLock

public ResourceLock()

Method Detail

lock

public L lock(Object resource)

Obtain an exclusive lock for the given resource.

Parameters:

resource - resource

Returns:

lock (already locked).

getLock

public L getLock(Object resource)

Get a lock object (not yet locked) for a given resource.

Parameters:

resource - resource

Returns:

lock (not locked yet)

createLock

protected L createLock(Object resource)