| package org.apache.maven.surefire.junitcore.pc; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.maven.surefire.api.report.ConsoleStream; |
| import org.apache.maven.surefire.api.util.internal.DaemonThreadFactory; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ThreadFactory; |
| |
| /** |
| * The factory of {@link SchedulingStrategy}. |
| * |
| * @author Tibor Digana (tibor17) |
| * @since 2.16 |
| */ |
| public class SchedulingStrategies |
| { |
| private static final ThreadFactory DAEMON_THREAD_FACTORY = DaemonThreadFactory.newDaemonThreadFactory(); |
| |
| /** |
| * @param logger current error logger |
| * @return sequentially executing strategy |
| */ |
| public static SchedulingStrategy createInvokerStrategy( ConsoleStream logger ) |
| { |
| return new InvokerStrategy( logger ); |
| } |
| |
| /** |
| * @param logger current error logger |
| * @param nThreads fixed pool capacity |
| * @return parallel scheduling strategy |
| */ |
| public static SchedulingStrategy createParallelStrategy( ConsoleStream logger, int nThreads ) |
| { |
| return new NonSharedThreadPoolStrategy( logger, |
| Executors.newFixedThreadPool( nThreads, DAEMON_THREAD_FACTORY ) ); |
| } |
| |
| /** |
| * @param logger current error logger |
| * @return parallel scheduling strategy with unbounded capacity |
| */ |
| public static SchedulingStrategy createParallelStrategyUnbounded( ConsoleStream logger ) |
| { |
| return new NonSharedThreadPoolStrategy( logger, Executors.newCachedThreadPool( DAEMON_THREAD_FACTORY ) ); |
| } |
| |
| /** |
| * The <tt>threadPool</tt> passed to this strategy can be shared in other strategies. |
| * <br> |
| * The call {@link SchedulingStrategy#finished()} is waiting until own tasks have finished. |
| * New tasks will not be scheduled by this call in this strategy. This strategy is not |
| * waiting for other strategies to finish. The {@link org.junit.runners.model.RunnerScheduler#finished()} may |
| * freely use {@link SchedulingStrategy#finished()}. |
| * |
| * @param logger current error logger |
| * @param threadPool thread pool possibly shared with other strategies |
| * @return parallel strategy with shared thread pool |
| * @throws NullPointerException if <tt>threadPool</tt> is null |
| */ |
| public static SchedulingStrategy createParallelSharedStrategy( ConsoleStream logger, ExecutorService threadPool ) |
| { |
| if ( threadPool == null ) |
| { |
| throw new NullPointerException( "null threadPool in #createParallelSharedStrategy" ); |
| } |
| return new SharedThreadPoolStrategy( logger, threadPool ); |
| } |
| } |