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 allMatch() operation.
  42  */
  43 @BenchmarkMode(Mode.Throughput)
  44 @OutputTimeUnit(TimeUnit.SECONDS)
  45 @State(Scope.Thread)
  46 public class AllMatch {
  47 
  48     /**
  49      * Implementation notes:
  50      *   - operations are explicit inner classes to untangle unwanted lambda effects
  51      *   - the predicates are always true to avert shortcurcuiting
  52      */
  53 
  54     @Param("100000")
  55     private int size;
  56 
  57     private LongPredicate p1, p2, p3;
  58 
  59     @Setup
  60     public void setup() {
  61         p1 = new LongPredicate() {
  62             @Override
  63             public boolean test(long v) {
  64                 return true;
  65             }
  66         };
  67         p2 = new LongPredicate() {
  68             @Override
  69             public boolean test(long v) {
  70                 return true;
  71             }
  72         };
  73         p3 = new LongPredicate() {
  74             @Override
  75             public boolean test(long v) {
  76                 return true;
  77             }
  78         };
  79     }
  80 
  81     @Benchmark
  82     public boolean seq_invoke() {
  83         return LongStream.range(0, size).allMatch(p1);
  84     }
  85 
  86     @Benchmark
  87     public int seq_chain111() {
  88         int s = 0;
  89         s += (LongStream.range(0, size).allMatch(p1)) ? 1 : 0;
  90         s += (LongStream.range(0, size).allMatch(p1)) ? 1 : 0;
  91         s += (LongStream.range(0, size).allMatch(p1)) ? 1 : 0;
  92         return s;
  93     }
  94 
  95     @Benchmark
  96     public int seq_chain123() {
  97         int s = 0;
  98         s += (LongStream.range(0, size).allMatch(p1)) ? 1 : 0;
  99         s += (LongStream.range(0, size).allMatch(p2)) ? 1 : 0;
 100         s += (LongStream.range(0, size).allMatch(p3)) ? 1 : 0;
 101         return s;
 102     }
 103 
 104     @Benchmark
 105     public boolean par_invoke() {
 106         return LongStream.range(0, size).parallel().allMatch(p1);
 107     }
 108 
 109     @Benchmark
 110     public int par_chain111() {
 111         int s = 0;
 112         s += (LongStream.range(0, size).parallel().allMatch(p1)) ? 1 : 0;
 113         s += (LongStream.range(0, size).parallel().allMatch(p1)) ? 1 : 0;
 114         s += (LongStream.range(0, size).parallel().allMatch(p1)) ? 1 : 0;
 115         return s;
 116     }
 117 
 118     @Benchmark
 119     public int par_chain123() {
 120         int s = 0;
 121         s += (LongStream.range(0, size).parallel().allMatch(p1)) ? 1 : 0;
 122         s += (LongStream.range(0, size).parallel().allMatch(p2)) ? 1 : 0;
 123         s += (LongStream.range(0, size).parallel().allMatch(p3)) ? 1 : 0;
 124         return s;
 125     }
 126 
 127 }