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.ops.value; 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 anyMatch() operation. 42 * Focuses on short-circuiting behavior. 43 */ 44 @BenchmarkMode(Mode.Throughput) 45 @OutputTimeUnit(TimeUnit.SECONDS) 46 @State(Scope.Thread) 47 public class AnyMatchShort { 48 49 /** 50 * Implementation notes: 51 * - operations are explicit inner classes to untangle unwanted lambda effects 52 * - test the predicate which will become true closer to start, in the middle, and closer to the end 53 */ 54 55 @Param("100000") 56 private int size; 57 58 @Param("100") 59 private int offset; 60 61 private LongPredicate pMid, pStart, pEnd; 62 63 @Setup 64 public void setup() { 65 pStart = new LongPredicate() { 66 @Override 67 public boolean test(long v) { 68 return v > offset; 69 } 70 }; 71 pMid = new LongPredicate() { 72 @Override 73 public boolean test(long v) { 74 return v > size / 2; 75 } 76 }; 77 pEnd = new LongPredicate() { 78 @Override 79 public boolean test(long v) { 80 return v > size - offset; 81 } 82 }; 83 } 84 85 @Benchmark 86 public boolean seq_start() { 87 return LongStream.range(0, size).anyMatch(pStart); 88 } 89 90 @Benchmark 91 public boolean seq_mid() { 92 return LongStream.range(0, size).anyMatch(pMid); 93 } 94 95 @Benchmark 96 public boolean seq_end() { 97 return LongStream.range(0, size).anyMatch(pEnd); 98 } 99 100 @Benchmark 101 public boolean par_start() { 102 return LongStream.range(0, size).parallel().anyMatch(pStart); 103 } 104 105 @Benchmark 106 public boolean par_mid() { 107 return LongStream.range(0, size).parallel().anyMatch(pMid); 108 } 109 110 @Benchmark 111 public boolean par_end() { 112 return LongStream.range(0, size).parallel().anyMatch(pEnd); 113 } 114 115 }