content: /*
   * 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 static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  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.utils.RandomUtil;
  import org.apache.activemq.artemis.utils.ReusableLatch;
  import org.junit.jupiter.api.Test;
  
  public class RefCountMessageLeakTest extends AbstractLeakTest {
  
     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.randomUUIDString();
        String strMessageFired = RandomUtil.randomUUIDString();
  
        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
        assertNull(message);
  
        MemoryAssertions.assertMemory(new CheckLeak(), 0, RefCountMessage.class.getName());
        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
        assertNull(message2);
  
        MemoryAssertions.assertMemory(new CheckLeak(), 0, RefCountMessage.class.getName());
        assertFalse(latchLeaked.await(100, TimeUnit.MILLISECONDS));
     }
  }