| /* |
| * 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.knox.gateway.util; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| public class ExecutorServiceUtils { |
| |
| public static void shutdownAndAwaitTermination(ExecutorService executorService, long timeout, TimeUnit timeUnit) { |
| executorService.shutdown(); // Disable new tasks from being submitted |
| try { |
| // Wait a while for existing tasks to terminate |
| if (!executorService.awaitTermination(timeout, timeUnit)) { |
| executorService.shutdownNow(); // Cancel currently executing tasks |
| // Wait a while for tasks to respond to being cancelled |
| if (!executorService.awaitTermination(timeout, timeUnit)) { |
| System.err.println("Pool did not terminate"); |
| } |
| } |
| } catch (InterruptedException ie) { |
| // (Re-)Cancel if current thread also interrupted |
| executorService.shutdownNow(); |
| // Preserve interrupt status |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| } |