| /* |
| * 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.ignite.raft.jraft.util; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.ignite.lang.IgniteLogger; |
| |
| /** |
| * |
| */ |
| public final class ExecutorServiceHelper { |
| |
| private static final IgniteLogger LOG = IgniteLogger.forClass(ExecutorServiceHelper.class); |
| |
| /** |
| * @see #shutdownAndAwaitTermination(ExecutorService, long) |
| */ |
| public static boolean shutdownAndAwaitTermination(final ExecutorService pool) { |
| return shutdownAndAwaitTermination(pool, 1000); |
| } |
| |
| /** |
| * The following method shuts down an {@code ExecutorService} in two phases, first by calling {@code shutdown} to |
| * reject incoming tasks, and then calling {@code shutdownNow}, if necessary, to cancel any lingering tasks. |
| */ |
| public static boolean shutdownAndAwaitTermination(final ExecutorService pool, final long timeoutMillis) { |
| if (pool == null) { |
| return true; |
| } |
| // disable new tasks from being submitted |
| pool.shutdown(); |
| final TimeUnit unit = TimeUnit.MILLISECONDS; |
| final long phaseOne = timeoutMillis / 5; |
| try { |
| // wait a while for existing tasks to terminate |
| if (pool.awaitTermination(phaseOne, unit)) { |
| return true; |
| } |
| pool.shutdownNow(); |
| // wait a while for tasks to respond to being cancelled |
| if (pool.awaitTermination(timeoutMillis - phaseOne, unit)) { |
| return true; |
| } |
| LOG.warn("Fail to shutdown pool: {}.", pool); |
| } |
| catch (final InterruptedException e) { |
| // (Re-)cancel if current thread also interrupted |
| pool.shutdownNow(); |
| // preserve interrupt status |
| Thread.currentThread().interrupt(); |
| } |
| return false; |
| } |
| } |