1 /* 2 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package org.openjdk.bench.java.util.stream; 26 27 import org.openjdk.jmh.annotations.Benchmark; 28 import org.openjdk.jmh.annotations.BenchmarkMode; 29 import org.openjdk.jmh.annotations.Mode; 30 import org.openjdk.jmh.annotations.OutputTimeUnit; 31 import org.openjdk.jmh.annotations.Param; 32 import org.openjdk.jmh.annotations.Scope; 33 import org.openjdk.jmh.annotations.Setup; 34 import org.openjdk.jmh.annotations.State; 35 36 import java.util.concurrent.TimeUnit; 37 import java.util.function.LongPredicate; 38 import java.util.stream.LongStream; 39 40 /** 41 * Benchmark for checking different "anyMatch" schemes. 42 */ 43 @BenchmarkMode(Mode.Throughput) 44 @OutputTimeUnit(TimeUnit.SECONDS) 45 @State(Scope.Thread) 46 public class AnyMatcher { 47 48 /** 49 * Implementation notes: 50 * - operations are explicit inner classes to untangle unwanted lambda effects 51 * - all operations have similar semantics 52 */ 53 54 @Param("100000") 55 private int size; 56 57 private LongPredicate op; 58 59 @Setup 60 public void setup() { 61 op = new LongPredicate() { 62 @Override 63 public boolean test(long x) { 64 return false; 65 } 66 }; 67 } 68 69 @Benchmark 70 public boolean seq_anyMatch() { 71 return LongStream.range(0, size).anyMatch(op); 72 } 73 74 @Benchmark 75 public boolean seq_filter_findFirst() { 76 return LongStream.range(0, size).filter(op).findFirst().isPresent(); 77 } 78 79 @Benchmark 80 public boolean seq_filter_findAny() { 81 return LongStream.range(0, size).filter(op).findAny().isPresent(); 82 } 83 84 @Benchmark 85 public boolean par_anyMatch() { 86 return LongStream.range(0, size).parallel().anyMatch(op); 87 } 88 89 @Benchmark 90 public boolean par_filter_findFirst() { 91 return LongStream.range(0, size).parallel().filter(op).findFirst().isPresent(); 92 } 93 94 @Benchmark 95 public boolean par_filter_findAny() { 96 return LongStream.range(0, size).parallel().filter(op).findAny().isPresent(); 97 } 98 99 }