1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  *   - Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  *
  11  *   - Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *
  15  *   - Neither the name of Oracle nor the names of its
  16  *     contributors may be used to endorse or promote products derived
  17  *     from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 
  32 /*
  33  * A micro-benchmark for getters and setters with primitive values,
  34  * alternating between ints and doubles. Introduction of primitive
  35  * and optimistic user accessors in JDK-8062401 make this faster by
  36  * 10x or more by allowing inlining and other optimizations to take place.
  37  */
  38 
  39 var x = {
  40     get m() {
  41         return this._m;
  42     },
  43     set m(v) {
  44         this._m = v;
  45     },
  46     get n() {
  47         return this._n;
  48     },
  49     set n(v) {
  50         this._n = v;
  51     }
  52 };
  53 
  54 
  55 function bench(v1, v2, result) {
  56     var start = Date.now();
  57     x.n = v1;
  58     for (var i = 0; i < 1e8; i++) {
  59         x.m = v2;
  60         if (x.m + x.n !== result) {
  61             throw "wrong result";
  62         }
  63     }
  64     print("done in", Date.now() - start, "millis");
  65 }
  66 
  67 for (var i = 0; i < 10; i++) {
  68     bench(i, 4, 4 + i);
  69 }
  70 
  71 for (var i = 0; i < 10; i++) {
  72     bench(i, 4.5, 4.5 + i);
  73 }
  74 
  75 for (var i = 0; i < 10; i++) {
  76     bench(i, 5, 5 + i);
  77 }
  78 
  79 for (var i = 0; i < 10; i++) {
  80     bench(i, 5.5, 5.5 + i);
  81 }