kopia lustrzana https://github.com/miklobit/TiddlyWiki5
63 wiersze
1.3 KiB
JavaScript
63 wiersze
1.3 KiB
JavaScript
/*\
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title: $:/core/modules/utils/performance.js
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type: application/javascript
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module-type: global
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Performance measurement.
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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function Performance(enabled) {
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this.enabled = !!enabled;
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this.measures = {}; // Hashmap of current values of measurements
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this.logger = new $tw.utils.Logger("performance");
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}
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/*
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Wrap performance reporting around a top level function
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*/
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Performance.prototype.report = function(name,fn) {
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var self = this;
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if(this.enabled) {
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return function() {
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self.measures = {};
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var startTime = $tw.utils.timer(),
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result = fn.apply(this,arguments);
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self.logger.log(name + ": " + $tw.utils.timer(startTime).toFixed(2) + "ms");
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for(var m in self.measures) {
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self.logger.log("+" + m + ": " + self.measures[m].toFixed(2) + "ms");
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}
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return result;
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};
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} else {
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return fn;
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}
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};
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/*
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Wrap performance measurements around a subfunction
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*/
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Performance.prototype.measure = function(name,fn) {
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var self = this;
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if(this.enabled) {
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return function() {
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var startTime = $tw.utils.timer(),
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result = fn.apply(this,arguments),
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value = self.measures[name] || 0;
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self.measures[name] = value + $tw.utils.timer(startTime);
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return result;
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};
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} else {
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return fn;
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}
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};
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exports.Performance = Performance;
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})();
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