src/third_party/trace-viewer/src/tracing/analysis/analyze_selection.js

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 'use strict';
   6
   7 tvcm.require('tracing.analysis.analyze_counters');
   8 tvcm.require('tracing.analysis.analyze_slices');
   9 tvcm.require('tracing.analysis.util');
  10 tvcm.require('tvcm.ui');
  11 tvcm.exportTo('tracing.analysis', function() {
  12
  13   /**
  14    * Analyzes the selection, outputting the analysis results into the provided
  15    * results object.
  16    *
  17    * @param {AnalysisResults} results Where the analysis is placed.
  18    * @param {Selection} selection What to analyze.
  19    */
  20   function analyzeSelection(results, selection) {
  21     analyzeEventsByType(results, selection.getEventsOrganizedByType());
  22   }
  23
  24   function analyzeEventsByType(results, eventsByType) {
  25     var sliceEvents = eventsByType.slices;
  26     var counterSampleEvents = eventsByType.counterSamples;
  27     var instantEvents = eventsByType.instantEvents;
  28     var sampleEvents = eventsByType.samples;
  29     var objectEvents = new tracing.Selection();
  30     objectEvents.addSelection(eventsByType.objectSnapshots);
  31     objectEvents.addSelection(eventsByType.objectInstances);
  32
  33     if (sliceEvents.length == 1) {
  34       tracing.analysis.analyzeSingleSlice(results, sliceEvents[0], 'Slice');
  35     } else if (sliceEvents.length > 1) {
  36       tracing.analysis.analyzeMultipleSlices(results, sliceEvents, 'Slices');
  37     }
  38
  39     if (instantEvents.length == 1) {
  40       tracing.analysis.analyzeSingleSlice(results, instantEvents[0],
  41                                           'Instant Event');
  42     } else if (instantEvents.length > 1) {
  43       tracing.analysis.analyzeMultipleSlices(results, instantEvents,
  44                                              'Instant Events');
  45     }
  46
  47     if (sampleEvents.length == 1) {
  48       tracing.analysis.analyzeSingleSlice(results, sampleEvents[0],
  49                                           'Sample Event');
  50     } else if (sampleEvents.length > 1) {
  51       tracing.analysis.analyzeMultipleSampleEvents(results, sampleEvents,
  52                                                    'Sample Events');
  53     }
  54
  55     if (counterSampleEvents.length != 0)
  56       tracing.analysis.analyzeCounterSamples(results, counterSampleEvents);
  57
  58     if (objectEvents.length)
  59       analyzeObjectEvents(results, objectEvents);
  60   }
  61
  62   /**
  63    * Extremely simplistic analysis of objects. Mainly exists to provide
  64    * click-through to the main object's analysis view.
  65    */
  66   function analyzeObjectEvents(results, objectEvents) {
  67     objectEvents = tvcm.asArray(objectEvents).sort(
  68         tvcm.Range.compareByMinTimes);
  69
  70     results.appendHeader('Selected Objects:');
  71     var table = results.appendTable('analysis-object-sample-table', 2);
  72
  73     objectEvents.forEach(function(event) {
  74       var row = results.appendBodyRow(table);
  75       var ts;
  76       var objectText;
  77       var selectionGenerator;
  78       if (event instanceof tracing.trace_model.ObjectSnapshot) {
  79         var objectSnapshot = event;
  80         ts = tracing.analysis.tsRound(objectSnapshot.ts);
  81         objectText = objectSnapshot.objectInstance.typeName + ' ' +
  82             objectSnapshot.objectInstance.id;
  83         selectionGenerator = function() {
  84           var selection = new tracing.Selection();
  85           selection.push(objectSnapshot);
  86           return selection;
  87         };
  88       } else {
  89         var objectInstance = event;
  90
  91         var deletionTs = objectInstance.deletionTs == Number.MAX_VALUE ?
  92             '' : tracing.analysis.tsRound(objectInstance.deletionTs);
  93         ts = tracing.analysis.tsRound(objectInstance.creationTs) +
  94             '-' + deletionTs;
  95
  96         objectText = objectInstance.typeName + ' ' +
  97             objectInstance.id;
  98
  99         selectionGenerator = function() {
 100           var selection = new tracing.Selection();
 101           selection.push(objectInstance);
 102           return selection;
 103         };
 104       }
 105
 106       results.appendTableCell(table, row, ts);
 107       var linkContainer = results.appendTableCell(table, row, '');
 108       linkContainer.appendChild(
 109           results.createSelectionChangingLink(objectText, selectionGenerator));
 110     });
 111   }
 112
 113   return {
 114     analyzeSelection: analyzeSelection,
 115     analyzeEventsByType: analyzeEventsByType
 116   };
 117 });