/*
* Copyright ( c ) 2015 , 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
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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* questions .
*/
import java.util.LinkedList;
import java.util.List;
import sun.java2d.Disposer;
import sun.java2d.DisposerRecord;
/**
* @ test
* @ bug 8129457
* @ summary Check Disposer disposes all objects without any memory leaks
* @ run main / othervm - mx128m TestDisposerLeak
* @ modules java . desktop / sun . java2d
*/
public final class TestDisposerLeak {
private static final int COUNT = 30000 ;
private static volatile boolean disposerComplete;
private static volatile boolean readyForDispose;
static int disposeCount = 0 ;
public static void main(String[] args) throws Exception {
TestDisposerLeak test = new TestDisposerLeak();
test.testLeak();
while (!disposerComplete) {}
if (disposeCount != COUNT) {
System.err.println("dispose called " + disposeCount);
throw new RuntimeException("All objects are not disposed" );
}else {
System.out.println("Test PASSED" );
}
}
public void testLeak() throws Exception {
MyDisposerRec disposerRecord = new MyDisposerRec();
for (int i = 0 ; i < 30000 ; i++) {
Disposer.addObjectRecord(new Object(), disposerRecord);
}
generateOOME();
readyForDispose = true ;
Disposer.addObjectRecord(new Object(), new EndRec());
generateOOME();
}
class MyDisposerRec implements DisposerRecord, Disposer.PollDisposable {
public void dispose() {
while (!readyForDispose) {}
disposeCount++;
Disposer.pollRemove();
}
}
class EndRec implements DisposerRecord, Disposer.PollDisposable {
public void dispose() {
disposerComplete = true ;
}
}
private static void generateOOME() throws Exception {
List<Object> leak = new LinkedList<>();
try {
while (true ) {
leak.add(new byte [1024 * 1024 ]);
}
} catch (OutOfMemoryError e) {
}
// Give the GC a chance at that weakref in case of slow systems
Thread .sleep(2000 );
}
}
Messung V0.5 in Prozent C=98 H=91 G=94
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
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