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Merged gcj-eclipse branch to trunk.

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From-SVN: r120621
This commit is contained in:
Tom Tromey 2007-01-09 19:58:05 +00:00
parent c648dedbde
commit 97b8365caf
17478 changed files with 606493 additions and 100744 deletions
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23
libjava/classpath/java/lang/ref/Reference.java
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@ -1,5 +1,5 @@
/* java.lang.ref.Reference
Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 1999, 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of GNU Classpath.
@ -70,19 +70,19 @@ package java.lang.ref;
* @author Jochen Hoenicke
* @see java.util.WeakHashMap
*/
public abstract class Reference
public abstract class Reference<T>
{
/**
* The underlying object. This field is handled in a special way by
* the garbage collector.
*/
Object referent;
T referent;
/**
* The queue this reference is registered on. This is null, if this
* wasn't registered to any queue or reference was already enqueued.
*/
ReferenceQueue queue;
volatile ReferenceQueue<? super T> queue;
/**
* Link to the next entry on the queue. If this is null, this
@ -91,7 +91,7 @@ public abstract class Reference
* (not to null, that value is used to mark a not enqueued
* reference).
*/
Reference nextOnQueue;
volatile Reference nextOnQueue;
/**
* This lock should be taken by the garbage collector, before
@ -106,7 +106,7 @@ public abstract class Reference
* class in a different package.
* @param ref the object we refer to.
*/
Reference(Object ref)
Reference(T ref)
{
referent = ref;
}
@ -119,7 +119,7 @@ public abstract class Reference
* @param q the reference queue to register on.
* @exception NullPointerException if q is null.
*/
Reference(Object ref, ReferenceQueue q)
Reference(T ref, ReferenceQueue<? super T> q)
{
if (q == null)
throw new NullPointerException();
@ -132,7 +132,7 @@ public abstract class Reference
* @return the object, this reference refers to, or null if the
* reference was cleared.
*/
public Object get()
public T get()
{
synchronized (lock)
{
@ -166,11 +166,10 @@ public abstract class Reference
*/
public boolean enqueue()
{
if (queue != null && nextOnQueue == null)
ReferenceQueue q = queue;
if (q != null)
{
queue.enqueue(this);
queue = null;
return true;
return q.enqueue(this);
}
return false;
}