author | serb |
Thu, 30 Jul 2015 15:27:02 +0300 | |
changeset 32126 | 6611b32dfa58 |
parent 27307 | 62ed492cbe63 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* - Neither the name of Oracle nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* A micro-benchmark for getters and setters with primitive values, |
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* alternating between ints and doubles. Introduction of primitive |
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* and optimistic user accessors in JDK-8062401 make this faster by |
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* 10x or more by allowing inlining and other optimizations to take place. |
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*/ |
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var x = { |
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get m() { |
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return this._m; |
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}, |
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set m(v) { |
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this._m = v; |
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}, |
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get n() { |
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return this._n; |
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}, |
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set n(v) { |
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this._n = v; |
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} |
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}; |
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function bench(v1, v2, result) { |
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var start = Date.now(); |
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x.n = v1; |
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for (var i = 0; i < 1e8; i++) { |
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x.m = v2; |
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if (x.m + x.n !== result) { |
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throw "wrong result"; |
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} |
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} |
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print("done in", Date.now() - start, "millis"); |
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} |
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for (var i = 0; i < 10; i++) { |
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bench(i, 4, 4 + i); |
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} |
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for (var i = 0; i < 10; i++) { |
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bench(i, 4.5, 4.5 + i); |
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} |
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for (var i = 0; i < 10; i++) { |
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bench(i, 5, 5 + i); |
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} |
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for (var i = 0; i < 10; i++) { |
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bench(i, 5.5, 5.5 + i); |
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} |