/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 * 

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 * 

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 * 

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 * 

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * A simple benchmark module that can be loaded

 * in order to time how many times a method executes

 * in a fixed number of seconds

 */

var benchmark = function(method, timeInMillis, args) {

    var hz,

    period,

    startTime = new Date,

    runs = 0;

    do {

	method.apply(args);

	runs++;

	totalTime = new Date - startTime;

    } while (totalTime < timeInMillis);

    // convert ms to seconds

    totalTime /= 1000;

    // period → how long per operation

    period = totalTime / runs;

    // hz → the number of operations per second

    hz = 1 / period;

    return hz;

};