| /* |
| * 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.logging.log4j.core; |
| |
| import org.apache.logging.log4j.message.ReusableMessage; |
| import org.apache.logging.log4j.message.ReusableMessageFactory; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| public class ReusableParameterizedMessageMemoryLeakTest { |
| |
| @Test |
| public void testParametersAreNotLeaked() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| ReusableMessage message = (ReusableMessage) ReusableMessageFactory.INSTANCE.newMessage( |
| "foo {}", new ParameterObject("paramValue", latch)); |
| // Large enough for the parameters, but smaller than the default reusable array size. |
| message.swapParameters(new Object[5]); |
| GarbageCollectionHelper gcHelper = new GarbageCollectionHelper(); |
| gcHelper.run(); |
| try { |
| assertTrue(latch.await(30, TimeUnit.SECONDS), "Parameter should have been garbage collected"); |
| } finally { |
| gcHelper.close(); |
| } |
| } |
| |
| private static final class ParameterObject { |
| private final String value; |
| private final CountDownLatch latch; |
| ParameterObject(String value, CountDownLatch latch) { |
| this.value = value; |
| this.latch = latch; |
| } |
| |
| @Override |
| public String toString() { |
| return value; |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| latch.countDown(); |
| super.finalize(); |
| } |
| } |
| } |