init
This commit is contained in:
555
jssource/src_files/include/javascript/yui3/build/profiler/profiler.js
vendored
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555
jssource/src_files/include/javascript/yui3/build/profiler/profiler.js
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@@ -0,0 +1,555 @@
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/*
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Copyright (c) 2009, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 3.0.0
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build: 1549
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*/
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YUI.add('profiler', function(Y) {
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/**
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* The YUI JavaScript profiler.
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* @module profiler
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* @requires yui
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*/
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//-------------------------------------------------------------------------
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// Private Variables and Functions
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//-------------------------------------------------------------------------
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var container = {}, //Container object on which to put the original unprofiled methods.
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report = {}, //Profiling information for functions
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stopwatches = {}, //Additional stopwatch information
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WATCH_STARTED = 0,
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WATCH_STOPPED = 1,
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WATCH_PAUSED = 2,
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//shortcuts
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L = Y.Lang;
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/* (intentionally not documented)
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* Creates a report object with the given name.
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* @param {String} name The name to store for the report object.
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* @return {Void}
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* @method createReport
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* @private
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*/
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function createReport(name){
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report[name] = {
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calls: 0,
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max: 0,
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min: 0,
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avg: 0,
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points: []
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};
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return report[name];
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}
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||||
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||||
/* (intentionally not documented)
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* Called when a method ends execution. Marks the start and end time of the
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* method so it can calculate how long the function took to execute. Also
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* updates min/max/avg calculations for the function.
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* @param {String} name The name of the function to mark as stopped.
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* @param {int} duration The number of milliseconds it took the function to
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* execute.
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* @return {Void}
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* @method saveDataPoint
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* @private
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* @static
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*/
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function saveDataPoint(name, duration){
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//get the function data
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var functionData /*:Object*/ = report[name];
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//just in case clear() was called
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if (!functionData){
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functionData = createReport(name);
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}
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//increment the calls
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functionData.calls++;
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functionData.points.push(duration);
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//if it's already been called at least once, do more complex calculations
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if (functionData.calls > 1) {
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functionData.avg = ((functionData.avg*(functionData.calls-1))+duration)/functionData.calls;
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functionData.min = Math.min(functionData.min, duration);
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functionData.max = Math.max(functionData.max, duration);
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} else {
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functionData.avg = duration;
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functionData.min = duration;
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functionData.max = duration;
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}
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}
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//-------------------------------------------------------------------------
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// Public Interface
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//-------------------------------------------------------------------------
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/**
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||||
* Profiles functions in JavaScript.
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* @class Profiler
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* @static
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*/
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Y.Profiler = {
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//-------------------------------------------------------------------------
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// Utility Methods
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||||
//-------------------------------------------------------------------------
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/**
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* Removes all report data from the profiler.
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* @param {String} name (Optional) The name of the report to clear. If
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||||
* omitted, then all report data is cleared.
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||||
* @return {Void}
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||||
* @method clear
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* @static
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||||
*/
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||||
clear: function(name){
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||||
if (L.isString(name)){
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delete report[name];
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delete stopwatches[name];
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||||
} else {
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||||
report = {};
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||||
stopwatches = {};
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||||
}
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||||
},
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||||
|
||||
/**
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||||
* Returns the uninstrumented version of a function/object.
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||||
* @param {String} name The name of the function/object to retrieve.
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||||
* @return {Function|Object} The uninstrumented version of a function/object.
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||||
* @method getOriginal
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||||
* @static
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||||
*/
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||||
getOriginal: function(name){
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||||
return container[name];
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||||
},
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||||
|
||||
/**
|
||||
* Instruments a method to have profiling calls.
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||||
* @param {String} name The name of the report for the function.
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||||
* @param {Function} method The function to instrument.
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||||
* @return {Function} An instrumented version of the function.
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||||
* @method instrument
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* @static
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||||
*/
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||||
instrument: function(name, method){
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||||
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||||
//create instrumented version of function
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||||
var newMethod = function () {
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||||
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var start = new Date(),
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retval = method.apply(this, arguments),
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stop = new Date();
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||||
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saveDataPoint(name, stop-start);
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return retval;
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||||
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||||
};
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//copy the function properties over
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Y.mix(newMethod, method);
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//assign prototype and flag as being profiled
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newMethod.__yuiProfiled = true;
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newMethod.prototype = method.prototype;
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//store original method
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container[name] = method;
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container[name].__yuiFuncName = name;
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//create the report
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createReport(name);
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//return the new method
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return newMethod;
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},
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//-------------------------------------------------------------------------
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// Stopwatch Methods
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||||
//-------------------------------------------------------------------------
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||||
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/**
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||||
* Pauses profiling information for a given name.
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* @param {String} name The name of the data point.
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||||
* @return {Void}
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||||
* @method pause
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||||
* @static
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||||
*/
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||||
pause: function(name){
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var now = new Date(),
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stopwatch = stopwatches[name];
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||||
|
||||
if (stopwatch && stopwatch.state == WATCH_STARTED){
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stopwatch.total += (now - stopwatch.start);
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stopwatch.start = 0;
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||||
stopwatch.state = WATCH_PAUSED;
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||||
}
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||||
|
||||
},
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||||
|
||||
/**
|
||||
* Start profiling information for a given name. The name cannot be the name
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||||
* of a registered function or object. This is used to start timing for a
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||||
* particular block of code rather than instrumenting the entire function.
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||||
* @param {String} name The name of the data point.
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||||
* @return {Void}
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||||
* @method start
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||||
* @static
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||||
*/
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||||
start: function(name){
|
||||
if(container[name]){
|
||||
throw new Error("Cannot use '" + name + "' for profiling through start(), name is already in use.");
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||||
} else {
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||||
|
||||
//create report if necessary
|
||||
if (!report[name]){
|
||||
createReport(name);
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||||
}
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||||
|
||||
//create stopwatch object if necessary
|
||||
if (!stopwatches[name]){
|
||||
stopwatches[name] = {
|
||||
state: WATCH_STOPPED,
|
||||
start: 0,
|
||||
total: 0
|
||||
};
|
||||
}
|
||||
|
||||
if (stopwatches[name].state == WATCH_STOPPED){
|
||||
stopwatches[name].state = WATCH_STARTED;
|
||||
stopwatches[name].start = new Date();
|
||||
}
|
||||
|
||||
}
|
||||
},
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||||
|
||||
/**
|
||||
* Stops profiling information for a given name.
|
||||
* @param {String} name The name of the data point.
|
||||
* @return {Void}
|
||||
* @method stop
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||||
* @static
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||||
*/
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||||
stop: function(name){
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||||
var now = new Date(),
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||||
stopwatch = stopwatches[name];
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||||
|
||||
if (stopwatch){
|
||||
if (stopwatch.state == WATCH_STARTED){
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||||
saveDataPoint(name, stopwatch.total + (now - stopwatch.start));
|
||||
} else if (stopwatch.state == WATCH_PAUSED){
|
||||
saveDataPoint(name, stopwatch.total);
|
||||
}
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||||
|
||||
//reset stopwatch information
|
||||
stopwatch.start = 0;
|
||||
stopwatch.total = 0;
|
||||
stopwatch.state = WATCH_STOPPED;
|
||||
}
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||||
},
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||||
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||||
//-------------------------------------------------------------------------
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||||
// Reporting Methods
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||||
//-------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Returns the average amount of time (in milliseconds) that the function
|
||||
* with the given name takes to execute.
|
||||
* @param {String} name The name of the function whose data should be returned.
|
||||
* If an object type method, it should be 'constructor.prototype.methodName';
|
||||
* a normal object method would just be 'object.methodName'.
|
||||
* @return {float} The average time it takes the function to execute.
|
||||
* @method getAverage
|
||||
* @static
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||||
*/
|
||||
getAverage : function (name /*:String*/) /*:float*/ {
|
||||
return report[name].avg;
|
||||
},
|
||||
|
||||
/**
|
||||
* Returns the number of times that the given function has been called.
|
||||
* @param {String} name The name of the function whose data should be returned.
|
||||
* @return {int} The number of times the function was called.
|
||||
* @method getCallCount
|
||||
* @static
|
||||
*/
|
||||
getCallCount : function (name /*:String*/) /*:int*/ {
|
||||
return report[name].calls;
|
||||
},
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||||
|
||||
/**
|
||||
* Returns the maximum amount of time (in milliseconds) that the function
|
||||
* with the given name takes to execute.
|
||||
* @param {String} name The name of the function whose data should be returned.
|
||||
* If an object type method, it should be 'constructor.prototype.methodName';
|
||||
* a normal object method would just be 'object.methodName'.
|
||||
* @return {float} The maximum time it takes the function to execute.
|
||||
* @method getMax
|
||||
* @static
|
||||
*/
|
||||
getMax : function (name /*:String*/) /*:int*/ {
|
||||
return report[name].max;
|
||||
},
|
||||
|
||||
/**
|
||||
* Returns the minimum amount of time (in milliseconds) that the function
|
||||
* with the given name takes to execute.
|
||||
* @param {String} name The name of the function whose data should be returned.
|
||||
* If an object type method, it should be 'constructor.prototype.methodName';
|
||||
* a normal object method would just be 'object.methodName'.
|
||||
* @return {float} The minimum time it takes the function to execute.
|
||||
* @method getMin
|
||||
* @static
|
||||
*/
|
||||
getMin : function (name /*:String*/) /*:int*/ {
|
||||
return report[name].min;
|
||||
},
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||||
|
||||
/**
|
||||
* Returns an object containing profiling data for a single function.
|
||||
* The object has an entry for min, max, avg, calls, and points).
|
||||
* @return {Object} An object containing profile data for a given function.
|
||||
* @method getFunctionReport
|
||||
* @static
|
||||
* @deprecated Use getReport() instead.
|
||||
*/
|
||||
getFunctionReport : function (name /*:String*/) /*:Object*/ {
|
||||
return report[name];
|
||||
},
|
||||
|
||||
/**
|
||||
* Returns an object containing profiling data for a single function.
|
||||
* The object has an entry for min, max, avg, calls, and points).
|
||||
* @return {Object} An object containing profile data for a given function.
|
||||
* @method getReport
|
||||
* @static
|
||||
*/
|
||||
getReport : function (name /*:String*/) /*:Object*/ {
|
||||
return report[name];
|
||||
},
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||||
|
||||
/**
|
||||
* Returns an object containing profiling data for all of the functions
|
||||
* that were profiled. The object has an entry for each function and
|
||||
* returns all information (min, max, average, calls, etc.) for each
|
||||
* function.
|
||||
* @return {Object} An object containing all profile data.
|
||||
* @static
|
||||
*/
|
||||
getFullReport : function (filter /*:Function*/) /*:Object*/ {
|
||||
filter = filter || function(){return true;};
|
||||
|
||||
if (L.isFunction(filter)) {
|
||||
var fullReport = {};
|
||||
|
||||
for (var name in report){
|
||||
if (filter(report[name])){
|
||||
fullReport[name] = report[name];
|
||||
}
|
||||
}
|
||||
|
||||
return fullReport;
|
||||
}
|
||||
},
|
||||
|
||||
//-------------------------------------------------------------------------
|
||||
// Profiling Methods
|
||||
//-------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Sets up a constructor for profiling, including all properties and methods on the prototype.
|
||||
* @param {string} name The fully-qualified name of the function including namespace information.
|
||||
* @param {Object} owner (Optional) The object that owns the function (namespace or containing object).
|
||||
* @return {Void}
|
||||
* @method registerConstructor
|
||||
* @static
|
||||
*/
|
||||
registerConstructor : function (name /*:String*/, owner /*:Object*/) /*:Void*/ {
|
||||
this.registerFunction(name, owner, true);
|
||||
},
|
||||
|
||||
/**
|
||||
* Sets up a function for profiling. It essentially overwrites the function with one
|
||||
* that has instrumentation data. This method also creates an entry for the function
|
||||
* in the profile report. The original function is stored on the container object.
|
||||
* @param {String} name The full name of the function including namespacing. This
|
||||
* is the name of the function that is stored in the report.
|
||||
* @param {Object} owner (Optional) The object that owns the function. If the function
|
||||
* isn't global then this argument is required. This could be the namespace that
|
||||
* the function belongs to or the object on which it's
|
||||
* a method.
|
||||
* @param {Boolean} registerPrototype (Optional) Indicates that the prototype should
|
||||
* also be instrumented. Setting to true has the same effect as calling
|
||||
* registerConstructor().
|
||||
* @return {Void}
|
||||
* @method registerFunction
|
||||
* @static
|
||||
*/
|
||||
registerFunction : function(name /*:String*/, owner /*:Object*/, registerPrototype /*:Boolean*/) /*:Void*/{
|
||||
|
||||
//figure out the function name without namespacing
|
||||
var funcName = (name.indexOf(".") > -1 ?
|
||||
name.substring(name.lastIndexOf(".")+1) : name),
|
||||
method,
|
||||
prototype;
|
||||
|
||||
//if owner isn't an object, try to find it from the name
|
||||
if (!L.isObject(owner)){
|
||||
owner = eval(name.substring(0, name.lastIndexOf(".")));
|
||||
}
|
||||
|
||||
//get the method and prototype
|
||||
method = owner[funcName];
|
||||
prototype = method.prototype;
|
||||
|
||||
//see if the method has already been registered
|
||||
if (L.isFunction(method) && !method.__yuiProfiled){
|
||||
|
||||
//replace the function with the profiling one
|
||||
owner[funcName] = this.instrument(name, method);
|
||||
|
||||
/*
|
||||
* Store original function information. We store the actual
|
||||
* function as well as the owner and the name used to identify
|
||||
* the function so it can be restored later.
|
||||
*/
|
||||
container[name].__yuiOwner = owner;
|
||||
container[name].__yuiFuncName = funcName; //overwrite with less-specific name
|
||||
|
||||
//register prototype if necessary
|
||||
if (registerPrototype) {
|
||||
this.registerObject(name + ".prototype", prototype);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
},
|
||||
|
||||
|
||||
/**
|
||||
* Sets up an object for profiling. It takes the object and looks for functions.
|
||||
* When a function is found, registerMethod() is called on it. If set to recrusive
|
||||
* mode, it will also setup objects found inside of this object for profiling,
|
||||
* using the same methodology.
|
||||
* @param {String} name The name of the object to profile (shows up in report).
|
||||
* @param {Object} owner (Optional) The object represented by the name.
|
||||
* @param {Boolean} recurse (Optional) Determines if subobject methods are also profiled.
|
||||
* @return {Void}
|
||||
* @method registerObject
|
||||
* @static
|
||||
*/
|
||||
registerObject : function (name /*:String*/, object /*:Object*/, recurse /*:Boolean*/) /*:Void*/{
|
||||
|
||||
//get the object
|
||||
object = (L.isObject(object) ? object : eval(name));
|
||||
|
||||
//save the object
|
||||
container[name] = object;
|
||||
|
||||
for (var prop in object) {
|
||||
if (typeof object[prop] == "function"){
|
||||
if (prop != "constructor" && prop != "superclass"){ //don't do constructor or superclass, it's recursive
|
||||
this.registerFunction(name + "." + prop, object);
|
||||
}
|
||||
} else if (typeof object[prop] == "object" && recurse){
|
||||
this.registerObject(name + "." + prop, object[prop], recurse);
|
||||
}
|
||||
}
|
||||
|
||||
},
|
||||
|
||||
/**
|
||||
* Removes a constructor function from profiling. Reverses the registerConstructor() method.
|
||||
* @param {String} name The full name of the function including namespacing. This
|
||||
* is the name of the function that is stored in the report.
|
||||
* @return {Void}
|
||||
* @method unregisterFunction
|
||||
* @static
|
||||
*/
|
||||
unregisterConstructor : function(name /*:String*/) /*:Void*/{
|
||||
|
||||
//see if the method has been registered
|
||||
if (L.isFunction(container[name])){
|
||||
this.unregisterFunction(name, true);
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* Removes function from profiling. Reverses the registerFunction() method.
|
||||
* @param {String} name The full name of the function including namespacing. This
|
||||
* is the name of the function that is stored in the report.
|
||||
* @return {Void}
|
||||
* @method unregisterFunction
|
||||
* @static
|
||||
*/
|
||||
unregisterFunction : function(name /*:String*/, unregisterPrototype /*:Boolean*/) /*:Void*/{
|
||||
|
||||
//see if the method has been registered
|
||||
if (L.isFunction(container[name])){
|
||||
|
||||
//check to see if you should unregister the prototype
|
||||
if (unregisterPrototype){
|
||||
this.unregisterObject(name + ".prototype", container[name].prototype);
|
||||
}
|
||||
|
||||
//get original data
|
||||
var owner /*:Object*/ = container[name].__yuiOwner,
|
||||
funcName /*:String*/ = container[name].__yuiFuncName;
|
||||
|
||||
//delete extra information
|
||||
delete container[name].__yuiOwner;
|
||||
delete container[name].__yuiFuncName;
|
||||
|
||||
//replace instrumented function
|
||||
owner[funcName] = container[name];
|
||||
|
||||
//delete supporting information
|
||||
delete container[name];
|
||||
}
|
||||
|
||||
|
||||
},
|
||||
|
||||
/**
|
||||
* Unregisters an object for profiling. It takes the object and looks for functions.
|
||||
* When a function is found, unregisterMethod() is called on it. If set to recrusive
|
||||
* mode, it will also unregister objects found inside of this object,
|
||||
* using the same methodology.
|
||||
* @param {String} name The name of the object to unregister.
|
||||
* @param {Boolean} recurse (Optional) Determines if subobject methods should also be
|
||||
* unregistered.
|
||||
* @return {Void}
|
||||
* @method unregisterObject
|
||||
* @static
|
||||
*/
|
||||
unregisterObject : function (name /*:String*/, recurse /*:Boolean*/) /*:Void*/{
|
||||
|
||||
//get the object
|
||||
if (L.isObject(container[name])){
|
||||
var object = container[name];
|
||||
|
||||
for (var prop in object) {
|
||||
if (typeof object[prop] == "function"){
|
||||
this.unregisterFunction(name + "." + prop);
|
||||
} else if (typeof object[prop] == "object" && recurse){
|
||||
this.unregisterObject(name + "." + prop, recurse);
|
||||
}
|
||||
}
|
||||
|
||||
delete container[name];
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
};
|
||||
|
||||
|
||||
|
||||
}, '3.0.0' ,{requires:['oop']});
|
||||
Reference in New Issue
Block a user