| /* |
| * Copyright (c) 2008, Rickard Öberg. All Rights Reserved. |
| * |
| * Licensed 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.zest.runtime.composite; |
| |
| /** |
| * Method instance pool that keeps a linked list. Uses synchronization |
| * to ensure that instances are acquired and returned in a thread-safe |
| * manner. |
| */ |
| public final class UnsynchronizedCompositeMethodInstancePool |
| implements InstancePool<CompositeMethodInstance> |
| { |
| private CompositeMethodInstance first = null; |
| |
| @Override |
| public CompositeMethodInstance obtainInstance() |
| { |
| CompositeMethodInstance instance = first; |
| if( instance != null ) |
| { |
| first = instance.getNext(); |
| } |
| return instance; |
| } |
| |
| @Override |
| public void releaseInstance( CompositeMethodInstance instance ) |
| { |
| instance.setNext( first ); |
| first = instance; |
| } |
| } |