Mercurial > jdk8-mips64-public > nashorn / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/examples/charcodeat-benchmark.js	Thu Sep 25 15:53:47 2014 +0200
     1.3 @@ -0,0 +1,63 @@
     1.4 +/*
     1.5 + * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/**
    1.28 + * Simple benchmark to measure charCodeAt specialized method performance
    1.29 + */
    1.30 +
    1.31 +var str = "sghjkdsfkjghsdfjkfkjdfkjdfjkdfjkfdjkfdkfldjfhdfpkjdhafgksdjfgldfgjldfkjgdlfjgldkfjgkldfj";
    1.32 +var RESULT1 = 9187;
    1.33 +var RESULT2 = 1496;
    1.34 +
    1.35 +function f() {
    1.36 +    var len = str.length;
    1.37 +    var c = 0;
    1.38 +    for (var i = 0; i < len; i++) {
    1.39 +	c += str.charCodeAt(i);
    1.40 +    }
    1.41 +    return c;
    1.42 +}
    1.43 +
    1.44 +function bench(res) {
    1.45 +    var d = new Date;
    1.46 +    var sum = 0;
    1.47 +    for (var i = 0; i < 1e6; i++) {
    1.48 +	sum |= f();
    1.49 +    }
    1.50 +    if (sum == res) {
    1.51 +	print("Verified OK"); 
    1.52 +    } else {
    1.53 +	print("Verification failed " + sum + " should be " + res);
    1.54 +    }
    1.55 +    print((new Date - d) + " ms");
    1.56 +}
    1.57 +
    1.58 +bench(RESULT1);
    1.59 +
    1.60 +print("Replacing charCodeAt... ");
    1.61 +
    1.62 +String.prototype.charCodeAt = function() { return 17; }
    1.63 +
    1.64 +bench(RESULT2);
    1.65 +
    1.66 +print("Done");