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.concurrent;
  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 import org.openjdk.jmh.infra.Blackhole;
  36 
  37 import java.util.concurrent.ArrayBlockingQueue;
  38 import java.util.concurrent.BlockingQueue;
  39 import java.util.concurrent.LinkedBlockingQueue;
  40 import java.util.concurrent.PriorityBlockingQueue;
  41 import java.util.concurrent.TimeUnit;
  42 
  43 @BenchmarkMode(Mode.AverageTime)
  44 @OutputTimeUnit(TimeUnit.NANOSECONDS)
  45 @State(Scope.Benchmark)
  46 public class Queues {
  47 
  48     @Param("100")
  49     private int capacity;
  50 
  51     @Param
  52     private QueueType type;
  53 
  54     public enum QueueType {
  55         LBQ,
  56         ABQ_NF,
  57         ABQ_F,
  58         PBQ,
  59     }
  60 
  61     private BlockingQueue<Integer> q;
  62 
  63     @Setup
  64     public void setup() {
  65         switch (type) {
  66             case ABQ_F:
  67                 q = new ArrayBlockingQueue<>(capacity, true);
  68                 break;
  69             case ABQ_NF:
  70                 q = new ArrayBlockingQueue<>(capacity, false);
  71                 break;
  72             case LBQ:
  73                 q = new LinkedBlockingQueue<>(capacity);
  74                 break;
  75             case PBQ:
  76                 q = new PriorityBlockingQueue<>(capacity);
  77                 break;
  78             default:
  79                 throw new RuntimeException();
  80         }
  81     }
  82 
  83     @Benchmark
  84     public void test() {
  85         try {
  86             int l = (int) System.nanoTime();
  87             Integer item = q.poll();
  88             if (item != null) {
  89                 Blackhole.consumeCPU(5);
  90             } else {
  91                 Blackhole.consumeCPU(10);
  92                 while (!q.offer(l)) {
  93                     Blackhole.consumeCPU(5);
  94                 }
  95             }
  96         } catch (Exception ie) {
  97             throw new Error("iteration failed");
  98         }
  99     }
 100 
 101 }