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8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer #26394

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8362572: Delete the usage of "sun.java2d.reftype" from the sun.java2d.Disposer #26394

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31 changes: 6 additions & 25 deletions src/java.desktop/share/classes/sun/java2d/Disposer.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2002, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
Expand All @@ -25,15 +25,15 @@

package sun.java2d;

import sun.awt.util.ThreadGroupUtils;

import java.lang.ref.PhantomReference;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.PhantomReference;
import java.lang.ref.WeakReference;
import java.util.Hashtable;
import java.util.concurrent.ConcurrentLinkedDeque;

import sun.awt.util.ThreadGroupUtils;

/**
* This class is used for registering and disposing the native
* data associated with java objects.
Expand All @@ -54,24 +54,11 @@ public class Disposer implements Runnable {
private static final Hashtable<java.lang.ref.Reference<Object>, DisposerRecord> records =
new Hashtable<>();

private static Disposer disposerInstance;
public static final int WEAK = 0;
public static final int PHANTOM = 1;
public static int refType = PHANTOM;
private static final Disposer disposerInstance;

static {
System.loadLibrary("awt");
initIDs();
String type = System.getProperty("sun.java2d.reftype");
if (type != null) {
if (type.equals("weak")) {
refType = WEAK;
System.err.println("Using WEAK refs");
} else {
refType = PHANTOM;
System.err.println("Using PHANTOM refs");
}
}
disposerInstance = new Disposer();
String name = "Java2D Disposer";
ThreadGroup rootTG = ThreadGroupUtils.getRootThreadGroup();
Expand Down Expand Up @@ -118,13 +105,7 @@ synchronized void add(Object target, DisposerRecord rec) {
if (target instanceof DisposerTarget) {
target = ((DisposerTarget)target).getDisposerReferent();
}
java.lang.ref.Reference<Object> ref;
if (refType == PHANTOM) {
ref = new PhantomReference<>(target, queue);
} else {
ref = new WeakReference<>(target, queue);
}
records.put(ref, rec);
records.put(new PhantomReference<>(target, queue), rec);
}

public void run() {
Expand Down