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