| /* |
| * 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 javax.servlet; |
| |
| /** |
| * Ensures that servlets handle |
| * only one request at a time. This interface has no methods. |
| * |
| * <p>If a servlet implements this interface, you are <i>guaranteed</i> |
| * that no two threads will execute concurrently in the |
| * servlet's <code>service</code> method. The servlet container |
| * can make this guarantee by synchronizing access to a single |
| * instance of the servlet, or by maintaining a pool of servlet |
| * instances and dispatching each new request to a free servlet. |
| * |
| * <p>Note that SingleThreadModel does not solve all thread safety |
| * issues. For example, session attributes and static variables can |
| * still be accessed by multiple requests on multiple threads |
| * at the same time, even when SingleThreadModel servlets are used. |
| * It is recommended that a developer take other means to resolve |
| * those issues instead of implementing this interface, such as |
| * avoiding the usage of an instance variable or synchronizing |
| * the block of the code accessing those resources. |
| * This interface is deprecated in Servlet API version 2.4. |
| * |
| * |
| * @author Various |
| * @version $Version$ |
| * |
| * @deprecated As of Java Servlet API 2.4, with no direct |
| * replacement. |
| */ |
| |
| public interface SingleThreadModel { |
| } |
