| /* |
| * 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.felix.dm.benchmark.scenario; |
| |
| import java.util.concurrent.ForkJoinPool; |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.function.Supplier; |
| |
| /** |
| * Helper class containing misc functions, and constants. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class Helper { |
| /** |
| * Activate this flag for debugging. |
| */ |
| private final static boolean DEBUG = false; |
| |
| /** |
| * Generator used to create unique identifiers. |
| */ |
| private final static AtomicLong m_idGenerator = new AtomicLong(); |
| |
| /** |
| * Threadpool which can be optionally used by parallel scenarios. |
| */ |
| private final static int CORES = Runtime.getRuntime().availableProcessors(); |
| private final static ForkJoinPool TPOOL = new ForkJoinPool(CORES); |
| |
| /** |
| * Get the threadpool, possibly needed by some scenario supporting parallel mode |
| */ |
| public static ForkJoinPool getThreadPool() { |
| return TPOOL; |
| } |
| |
| /** |
| * Display some debug messages. |
| */ |
| public static void debug(Supplier<String> message) { |
| if (DEBUG) { |
| System.out.println(message.get()); |
| } |
| } |
| |
| /** |
| * Generates a unique id. |
| */ |
| public static long generateId() { |
| return m_idGenerator.incrementAndGet(); |
| } |
| } |