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8298783: java/lang/ref/FinalizerHistogramTest.java failed with "RuntimeException: MyObject is not found in test output"

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Reviewed-by: kbarrett, jpai
This commit is contained in:
Brent Christian 2025-05-06 18:40:33 +00:00
parent 0cb355ee92
commit fe29cad5e0
1 changed files with 27 additions and 14 deletions
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41
test/jdk/java/lang/ref/FinalizerHistogramTest.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -21,8 +21,9 @@
* questions.
*/
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import jdk.test.whitebox.WhiteBox;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.ReentrantLock;
import java.lang.reflect.Method;
@ -32,37 +33,49 @@ import java.lang.reflect.Field;
* @test
* @summary Unit test for FinalizerHistogram
* @modules java.base/java.lang.ref:open
* @run main FinalizerHistogramTest
* @library /test/lib
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm
* -Xbootclasspath/a:.
* -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI
* FinalizerHistogramTest
*/
public class FinalizerHistogramTest {
static ReentrantLock lock = new ReentrantLock();
static volatile int wasInitialized = 0;
static volatile int wasTrapped = 0;
static final int objectsCount = 1000;
static final AtomicInteger initializedCount = new AtomicInteger(0);
static final int OBJECTS_COUNT = 1000;
static WhiteBox wb;
static class MyObject {
public MyObject() {
// Make sure object allocation/deallocation is not optimized out
wasInitialized += 1;
initializedCount.incrementAndGet();
}
protected void finalize() {
// Trap the object in a finalization queue
wasTrapped += 1;
lock.lock();
}
}
public static void main(String[] argvs) {
public static void main(String[] argvs) throws InterruptedException {
try {
lock.lock();
for(int i = 0; i < objectsCount; ++i) {
for(int i = 0; i < OBJECTS_COUNT; ++i) {
new MyObject();
}
System.out.println("Objects intialized: " + objectsCount);
System.gc();
while(wasTrapped < 1);
System.out.println("Objects intialized: " + initializedCount.get());
wb = WhiteBox.getWhiteBox();
wb.fullGC();
boolean refProResult;
do {
refProResult = wb.waitForReferenceProcessing();
System.out.println("waitForReferenceProcessing returned: " + refProResult);
} while (refProResult);
Class<?> klass = Class.forName("java.lang.ref.FinalizerHistogram");