| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * 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 com.alibaba.dubbo.common.utils; |
| |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.alibaba.dubbo.common.logger.Logger; |
| import com.alibaba.dubbo.common.logger.LoggerFactory; |
| |
| /** |
| * @author chao.liuc |
| * |
| */ |
| public class ExecutorUtil { |
| private static final Logger logger = LoggerFactory.getLogger(ExecutorUtil.class); |
| private static final ThreadPoolExecutor shutdownExecutor = new ThreadPoolExecutor(0, 1, |
| 0L, TimeUnit.MILLISECONDS, |
| new LinkedBlockingQueue<Runnable>(100), |
| new NamedThreadFactory("Close-ExecutorService-Timer", true)); |
| |
| public static boolean isShutdown(Executor executor) { |
| if (executor instanceof ExecutorService) { |
| if (((ExecutorService) executor).isShutdown()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| public static void gracefulShutdown(Executor executor, int timeout) { |
| if (!(executor instanceof ExecutorService) || isShutdown(executor)) { |
| return; |
| } |
| final ExecutorService es = (ExecutorService) executor; |
| try { |
| es.shutdown(); // Disable new tasks from being submitted |
| } catch (SecurityException ex2) { |
| return ; |
| } catch (NullPointerException ex2) { |
| return ; |
| } |
| try { |
| if(! es.awaitTermination(timeout, TimeUnit.MILLISECONDS)) { |
| es.shutdownNow(); |
| } |
| } catch (InterruptedException ex) { |
| es.shutdownNow(); |
| Thread.currentThread().interrupt(); |
| } |
| if (!isShutdown(es)){ |
| newThreadToCloseExecutor(es); |
| } |
| } |
| public static void shutdownNow(Executor executor, final int timeout) { |
| if (!(executor instanceof ExecutorService) || isShutdown(executor)) { |
| return; |
| } |
| final ExecutorService es = (ExecutorService) executor; |
| try { |
| es.shutdownNow(); |
| } catch (SecurityException ex2) { |
| return ; |
| } catch (NullPointerException ex2) { |
| return ; |
| } |
| try { |
| es.awaitTermination(timeout, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException ex) { |
| Thread.currentThread().interrupt(); |
| } |
| if (!isShutdown(es)){ |
| newThreadToCloseExecutor(es); |
| } |
| } |
| |
| private static void newThreadToCloseExecutor(final ExecutorService es) { |
| if (!isShutdown(es)) { |
| shutdownExecutor.execute(new Runnable() { |
| public void run() { |
| try {
|
| for (int i=0;i<1000;i++){ |
| es.shutdownNow();
|
| if (es.awaitTermination(10, TimeUnit.MILLISECONDS)){
|
| break;
|
| }
|
| } |
| } catch (InterruptedException ex) {
|
| Thread.currentThread().interrupt();
|
| } catch (Throwable e) {
|
| logger.warn(e.getMessage(), e);
|
| } |
| } |
| }); |
| } |
| } |
| } |