| /******************************************************************************* |
| * 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.ofbiz.base.util.test; |
| |
| import java.util.HashSet; |
| import java.util.concurrent.SynchronousQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.ofbiz.base.lang.SourceMonitored; |
| import org.apache.ofbiz.base.test.GenericTestCaseBase; |
| import org.apache.ofbiz.base.util.ReferenceCleaner; |
| |
| @SourceMonitored |
| public class ReferenceCleanerTests extends GenericTestCaseBase { |
| public ReferenceCleanerTests(String name) { |
| super(name); |
| } |
| |
| public void testReferenceCleaner() throws Exception { |
| assertStaticHelperClass(ReferenceCleaner.class); |
| final SynchronousQueue<String> queue = new SynchronousQueue<String>(); |
| Object obj = new Object(); |
| ReferenceCleaner.Soft<Object> soft = new ReferenceCleaner.Soft<Object>(obj) { |
| public void remove() throws Exception { |
| queue.put("soft"); |
| Thread.currentThread().interrupt(); |
| } |
| }; |
| ReferenceCleaner.Weak<Object> weak = new ReferenceCleaner.Weak<Object>(obj) { |
| public void remove() throws Exception { |
| queue.put("weak"); |
| throw new RuntimeException(); |
| } |
| }; |
| new ReferenceCleaner.Phantom<Object>(obj) { |
| public void remove() throws Exception { |
| queue.put("phantom"); |
| } |
| }; |
| HashSet<String> foundEvents = new HashSet<String>(); |
| useAllMemory(); |
| assertSame("still-soft", obj, soft.get()); |
| assertSame("still-weak", obj, weak.get()); |
| assertNull("no event", queue.poll(100, TimeUnit.MILLISECONDS)); |
| obj = null; |
| useAllMemory(); |
| foundEvents.add(queue.poll(100, TimeUnit.MILLISECONDS)); |
| foundEvents.add(queue.poll(100, TimeUnit.MILLISECONDS)); |
| foundEvents.add(queue.poll(100, TimeUnit.MILLISECONDS)); |
| useAllMemory(); |
| foundEvents.add(queue.poll(100, TimeUnit.MILLISECONDS)); |
| foundEvents.remove(null); |
| assertFalse("no null", foundEvents.contains(null)); |
| assertNull("no-soft", soft.get()); |
| assertNull("no-weak", weak.get()); |
| assertTrue("soft event", foundEvents.contains("soft")); |
| assertTrue("weak event", foundEvents.contains("weak")); |
| assertTrue("phantom event", foundEvents.contains("phantom")); |
| } |
| } |