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RefCountMessageLeakTest.java
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RefCountMessageLeakTest.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.artemis.tests.leak;
import java.util.concurrent.TimeUnit;
import io.github.checkleak.core.CheckLeak;
import org.apache.activemq.artemis.api.core.RefCountMessage;
import org.apache.activemq.artemis.api.core.RefCountMessageAccessor;
import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
import org.apache.activemq.artemis.utils.RandomUtil;
import org.apache.activemq.artemis.utils.ReusableLatch;
import org.junit.Assert;
import org.junit.Test;
public class RefCountMessageLeakTest extends ActiveMQTestBase {
static class DebugMessage extends RefCountMessage {
final String string;
DebugMessage(String str) {
this.string = str;
registerDebug();
}
@Override
public String toString() {
return "debugMessage(" + string + ")";
}
public void fired() {
this.released();
}
}
@Test
public void testLeakRefCount() throws Exception {
String strMessage = RandomUtil.randomString();
String strMessageFired = RandomUtil.randomString();
ReusableLatch latchLeaked = new ReusableLatch(1);
DebugMessage message = new DebugMessage(strMessage);
message.refUp();
message.durableUp();
RefCountMessageAccessor.setRunOnLeak(message, latchLeaked::countDown);
message = null;
// I know it's null, I'm just doing this to make sure there are no optimizations from the JVM delaying the GC cleanup
Assert.assertNull(message);
MemoryAssertions.assertMemory(new CheckLeak(), 0, RefCountMessage.class.getName());
Assert.assertTrue(latchLeaked.await(1, TimeUnit.SECONDS));
DebugMessage message2 = new DebugMessage(strMessageFired);
message2.refUp();
latchLeaked.setCount(1);
RefCountMessageAccessor.setRunOnLeak(message2, latchLeaked::countDown);
message2.fired();
message2 = null;
// I know it's null, I'm just doing this to make sure there are no optimizations from the JVM delaying the GC cleanup
Assert.assertNull(message2);
MemoryAssertions.assertMemory(new CheckLeak(), 0, RefCountMessage.class.getName());
Assert.assertFalse(latchLeaked.await(100, TimeUnit.MILLISECONDS));
}
}