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