| /* |
| * 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.geode.test.concurrency; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| |
| /** |
| * Executor that executes multiple tasks in parallel as part of the main body of concurrent test. |
| * |
| * See {@link ConcurrentTestRunner} |
| */ |
| public interface ParallelExecutor { |
| |
| /** |
| * Add a task to run in parallel |
| */ |
| <T> Future<T> inParallel(Callable<T> callable); |
| |
| /** |
| * Add a task to run in parallel |
| */ |
| default <T> Future<T> inParallel(RunnableWithException runnable) { |
| return inParallel(() -> { |
| runnable.run(); |
| return null; |
| }); |
| } |
| |
| default <T> Collection<Future<T>> inParallel(RunnableWithException runnable, int count) { |
| ArrayList<Future<T>> futures = new ArrayList<>(count); |
| for (; count > 0; count--) { |
| futures.add(inParallel(runnable)); |
| } |
| return futures; |
| } |
| |
| /** |
| * Execute all tasks in parallel, wait for them to complete and throw an exception if any of the |
| * tasks throw an exception. |
| */ |
| void execute() throws ExecutionException, InterruptedException; |
| |
| } |