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| 1 <!DOCTYPE html> | |
| 2 <!-- | |
| 3 Copyright 2016 The Chromium Authors. All rights reserved. | |
| 4 Use of this source code is governed by a BSD-style license that can be | |
| 5 found in the LICENSE file. | |
| 6 --> | |
| 7 | |
| 8 <link rel="import" href="/tracing/base/iteration_helpers.html"> | |
| 9 <link rel="import" href="/tracing/value/diagnostics/diagnostic.html"> | |
| 10 <link rel="import" href="/tracing/value/diagnostics/histogram_ref.html"> | |
| 11 | |
| 12 <script> | |
| 13 'use strict'; | |
| 14 | |
| 15 tr.exportTo('tr.v.d', function() { | |
| 16 class RelatedHistogramSet extends tr.v.d.Diagnostic { | |
| 17 constructor(opt_histograms) { | |
| 18 super(); | |
| 19 this.histogramsByGuid_ = new Map(); | |
| 20 | |
| 21 if (opt_histograms) { | |
| 22 for (const hist of opt_histograms) { | |
| 23 this.add(hist); | |
| 24 } | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 canAddDiagnostic(otherDiagnostic) { | |
| 29 return otherDiagnostic instanceof RelatedHistogramSet; | |
| 30 } | |
| 31 | |
| 32 addDiagnostic(otherDiagnostic) { | |
| 33 // Related Histograms might not exist yet. | |
| 34 } | |
| 35 | |
| 36 mergeRelationships(otherDiagnostic, parentHist, otherParentHist) { | |
| 37 /* | |
| 38 Modify |this| to contain Histograms that should be related to | |
| 39 |parentHist|. | |
| 40 | |
| 41 |otherParentHist| was merged to |parentHist|. | |
| 42 |otherDiagnostic| contains Histograms that are related to | |
| 43 |otherParentHist|. | |
| 44 | |
| 45 Since mergeRelationships() is called after all Histograms are merged, | |
| 46 then the MERGED_TO diagnostics of the Histograms in |otherDiagnostic| | |
| 47 contain Histograms that should be related to |parentHist| via |this| | |
| 48 RelatedHistogramSet. | |
| 49 | |
| 50 otherParentHist -----------------------------> parentHist | |
| 51 | merged to RelatedHistogramSet | | |
| 52 | | | |
| 53 | otherDiagnostic | this | |
| 54 | RelatedHistogramSet | RelatedHistogramSet | |
| 55 v v | |
| 56 otherRelatedHist -----------------------------> relatedHist | |
| 57 merged to RelatedHistogramSet | |
| 58 | |
| 59 However, |otherRelatedHist| may have been merged to Histograms using | |
| 60 different grouping keys, so if |relatedHist|'s merge path is different | |
| 61 from |parentHist|'s merge path, then |relatedHist| should not be related | |
| 62 to |parentHist|. | |
| 63 */ | |
| 64 const parentGroupingPath = tr.v.d.GroupingPath.getFromHistogram( | |
| 65 parentHist); | |
| 66 for (const otherRelatedHist of otherDiagnostic) { | |
| 67 const mergedTo = otherRelatedHist.diagnostics.get( | |
| 68 tr.v.d.RESERVED_NAMES.MERGED_TO); | |
| 69 if (mergedTo === undefined) continue; | |
| 70 | |
| 71 for (const relatedHist of mergedTo) { | |
| 72 if (this.has(relatedHist)) continue; | |
| 73 | |
| 74 const relatedGroupingPath = tr.v.d.GroupingPath.getFromHistogram( | |
| 75 relatedHist); | |
| 76 if (relatedGroupingPath === undefined) continue; | |
| 77 if (!parentGroupingPath.equals(relatedGroupingPath)) continue; | |
| 78 | |
| 79 this.add(relatedHist); | |
| 80 } | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 /** | |
| 85 * @param {!(tr.v.d.HistogramRef|tr.v.Histogram)} v | |
| 86 */ | |
| 87 add(hist) { | |
| 88 if (!(hist instanceof tr.v.Histogram) && | |
| 89 !(hist instanceof tr.v.d.HistogramRef)) { | |
| 90 throw new Error('Must be instanceof Histogram or HistogramRef: ' + | |
| 91 hist); | |
| 92 } | |
| 93 | |
| 94 if (this.histogramsByGuid_.has(hist.guid)) { | |
| 95 throw new Error('Tried to add same hist twice'); | |
| 96 } | |
| 97 | |
| 98 this.histogramsByGuid_.set(hist.guid, hist); | |
| 99 } | |
| 100 | |
| 101 has(hist) { | |
| 102 return this.histogramsByGuid_.has(hist.guid); | |
| 103 } | |
| 104 | |
| 105 get length() { | |
| 106 return this.histogramsByGuid_.size; | |
| 107 } | |
| 108 | |
| 109 * [Symbol.iterator]() { | |
| 110 for (const [guid, hist] of this.histogramsByGuid_) { | |
| 111 yield hist; | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 /** | |
| 116 * Resolve all HistogramRefs into Histograms by looking up their guids in | |
| 117 * |histograms|. | |
| 118 * If a Histogram cannot be found and |opt_required| is true, then throw an | |
| 119 * Error. | |
| 120 * If a Histogram cannot be found and |opt_required| is false, then the | |
| 121 * HistogramRef will remain a HistogramRef. | |
| 122 * | |
| 123 * @param {!tr.v.HistogramSet} histograms | |
| 124 * @param {boolean=} opt_required | |
| 125 */ | |
| 126 resolve(histograms, opt_required) { | |
| 127 for (const [guid, value] of this.histogramsByGuid_) { | |
| 128 if (!(value instanceof tr.v.d.HistogramRef)) continue; | |
| 129 | |
| 130 const hist = histograms.lookupHistogram(guid); | |
| 131 if (hist instanceof tr.v.Histogram) { | |
| 132 this.histogramsByGuid_.set(guid, hist); | |
| 133 } else if (opt_required) { | |
| 134 throw new Error('Unable to find Histogram ' + guid); | |
| 135 } | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 asDictInto_(d) { | |
| 140 d.guids = []; | |
| 141 for (const hist of this) { | |
| 142 d.guids.push(hist.guid); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 static fromDict(d) { | |
| 147 return new RelatedHistogramSet(d.guids.map( | |
| 148 guid => new tr.v.d.HistogramRef(guid))); | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 tr.v.d.Diagnostic.register(RelatedHistogramSet, { | |
| 153 elementName: 'tr-v-ui-related-histogram-set-span' | |
| 154 }); | |
| 155 | |
| 156 return { | |
| 157 RelatedHistogramSet, | |
| 158 }; | |
| 159 }); | |
| 160 </script> | |
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Chromium Code Reviews
Issue 2998043002:
Remove RelatedHistogramSet. (Closed)
