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94 lines
3.0 KiB
JavaScript
94 lines
3.0 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is profile.js.
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*
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* The Initial Developer of the Original Code is
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* Ian Gilman <ian@iangilman.com>
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// **********
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// Title: profile.js
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(function() {
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// ##########
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// Class: Profile
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// A simple profiling helper.
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// TODO: remove before shipping.
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window.Profile = {
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// Variable: silent
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// If true, disables logging of results.
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silent: true,
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// Variable: cutoff
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// How many ms a wrapped function needs to take before it gets logged.
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cutoff: 4,
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// Variable: _time
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// Private. The time of the last checkpoint.
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_time: Date.now(),
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// ----------
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// Function: wrap
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// Wraps the given object with profiling for each method.
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wrap: function(obj, name) {
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let self = this;
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[i for (i in Iterator(obj))].forEach(function([key, val]) {
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if (typeof val != "function")
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return;
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obj[key] = function() {
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let start = Date.now();
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try {
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return val.apply(obj, arguments);
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} finally {
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let diff = Date.now() - start;
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if (diff >= self.cutoff && !self.silent)
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Utils.log("profile: " + name + "." + key + " = " + diff + "ms");
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}
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};
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});
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},
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// ----------
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// Function: checkpoint
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// Reset the clock. If label is provided, print the time in milliseconds since the last reset.
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checkpoint: function(label) {
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var now = Date.now();
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if (label && !this.silent)
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Utils.log("profile checkpoint: " + label + " = " + (now - this._time) + "ms");
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this._time = now;
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}
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};
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})();
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