| /* |
| * 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.sling.commons.cache.impl; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.sling.commons.cache.api.Cache; |
| |
| /** |
| * Represents a Cache stored on the thread, used in the request thread and in |
| * other threads. When used in Threads there is a potential for memory leaks as |
| * perm space is not cleaned up. This will be caused by references to |
| * classloaders being in the Map, and keeping the classloaders open. |
| */ |
| public class ThreadLocalCacheMap extends ThreadLocal<Map<String, Cache<?>>> { |
| /** |
| * {@inheritDoc} |
| * |
| * @see java.lang.ThreadLocal#initialValue() |
| */ |
| @Override |
| protected Map<String, Cache<?>> initialValue() { |
| return new HashMap<String, Cache<?>>(); |
| } |
| } |