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  */
  43 @BenchmarkMode(Mode.Throughput)
  44 @OutputTimeUnit(TimeUnit.SECONDS)
  45 @State(Scope.Thread)
  46 public class AnyMatch {
  47 
  48     /**
  49      * Implementation notes:
  50      *   - operations are explicit inner classes to untangle unwanted lambda effects
  51      *   - the predicates are always false to avert shortcurcuiting
  52      */
  53     @Param("100000")
  54     private int size;
  55 
  56     private LongPredicate p1, p2, p3;
  57 
  58     @Setup
  59     public void setup() {
  60         p1 = new LongPredicate() {
  61             @Override
  62             public boolean test(long v) {
  63                 return false;
  64             }
  65         };
  66         p2 = new LongPredicate() {
  67             @Override
  68             public boolean test(long v) {
  69                 return false;
  70             }
  71         };
  72         p3 = new LongPredicate() {
  73             @Override
  74             public boolean test(long v) {
  75                 return false;
  76             }
  77         };
  78     }
  79 
  80     @Benchmark
  81     public boolean seq_invoke() {
  82         return LongStream.range(0, size).anyMatch(p1);
  83     }
  84 
  85     @Benchmark
  86     public int seq_chain111() {
  87         int s = 0;
  88         s += (LongStream.range(0, size).anyMatch(p1)) ? 1 : 0;
  89         s += (LongStream.range(0, size).anyMatch(p1)) ? 1 : 0;
  90         s += (LongStream.range(0, size).anyMatch(p1)) ? 1 : 0;
  91         return s;
  92     }
  93 
  94     @Benchmark
  95     public int seq_chain123() {
  96         int s = 0;
  97         s += (LongStream.range(0, size).anyMatch(p1)) ? 1 : 0;
  98         s += (LongStream.range(0, size).anyMatch(p2)) ? 1 : 0;
  99         s += (LongStream.range(0, size).anyMatch(p3)) ? 1 : 0;
 100         return s;
 101     }
 102 
 103     @Benchmark
 104     public boolean par_invoke() {
 105         return LongStream.range(0, size).parallel().anyMatch(p1);
 106     }
 107 
 108     @Benchmark
 109     public int par_chain111() {
 110         int s = 0;
 111         s += (LongStream.range(0, size).parallel().anyMatch(p1)) ? 1 : 0;
 112         s += (LongStream.range(0, size).parallel().anyMatch(p1)) ? 1 : 0;
 113         s += (LongStream.range(0, size).parallel().anyMatch(p1)) ? 1 : 0;
 114         return s;
 115     }
 116 
 117     @Benchmark
 118     public int par_chain123() {
 119         int s = 0;
 120         s += (LongStream.range(0, size).parallel().anyMatch(p1)) ? 1 : 0;
 121         s += (LongStream.range(0, size).parallel().anyMatch(p2)) ? 1 : 0;
 122         s += (LongStream.range(0, size).parallel().anyMatch(p3)) ? 1 : 0;
 123         return s;
 124     }
 125 
 126 }