| <!DOCTYPE html> |
| <!-- |
| Copyright 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/base/math/range.html"> |
| <link rel="import" href="/tracing/base/unit.html"> |
| <link rel="import" href="/tracing/mre/function_handle.html"> |
| <link rel="import" href="/tracing/value/histogram.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('pi.m', function() { |
| var COUNT_BOUNDARIES = tr.v.HistogramBinBoundaries.createLinear(0, 5e4, 20); |
| |
| function traceStatsFunction(result, model) { |
| var canonicalUrl = model.canonicalUrl; |
| var eventCount = 0; |
| var firstTime = Number.MAX_VALUE; |
| var lastTime = 0; |
| var categories = {}; |
| |
| var secondsCounts = {}; |
| for (var event of model.getDescendantEvents()) { |
| eventCount += 1; |
| if (event.start < firstTime) |
| firstTime = event.start; |
| |
| var eventEnd = event.start + event.duration; |
| if (eventEnd > lastTime) |
| lastTime = eventEnd; |
| |
| if (categories[event.category] === undefined) |
| categories[event.category] = 0; |
| |
| categories[event.category]++; |
| |
| var second = Math.round(event.start / 1000); |
| if (secondsCounts[second] === undefined) |
| secondsCounts[second] = 0; |
| |
| secondsCounts[second]++; |
| } |
| |
| var histogram = new tr.v.Histogram( |
| tr.b.Unit.byName.count, COUNT_BOUNDARIES); |
| |
| for (var second in secondsCounts) |
| histogram.add(secondsCounts[second]); |
| |
| var stats = { |
| totalEvents: eventCount, |
| firstTimeInMS: firstTime, |
| lastTimeInMS: lastTime, |
| durationInMS: lastTime - firstTime, |
| eventsPerSecond: eventCount / (lastTime - firstTime) * 1000, |
| categories: categories, |
| events_seconds: histogram.asDict() |
| }; |
| |
| result.addPair('stats', stats); |
| } |
| |
| tr.mre.FunctionRegistry.register(traceStatsFunction); |
| |
| // Exporting for tests. |
| return { |
| traceStatsFunctionForTest: traceStatsFunction |
| }; |
| }); |
| </script> |
