| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @constructor |
| * @param {WebInspector.TimelineModel} model |
| * @param {WebInspector.TimelineOverviewPane} overviewPane |
| * @param {WebInspector.TimelinePresentationModel} presentationModel |
| */ |
| WebInspector.TimelineFrameController = function(model, overviewPane, presentationModel) |
| { |
| this._lastFrame = null; |
| this._model = model; |
| this._overviewPane = overviewPane; |
| this._presentationModel = presentationModel; |
| this._model.addEventListener(WebInspector.TimelineModel.Events.RecordAdded, this._onRecordAdded, this); |
| this._model.addEventListener(WebInspector.TimelineModel.Events.RecordsCleared, this._onRecordsCleared, this); |
| |
| var records = model.records; |
| for (var i = 0; i < records.length; ++i) |
| this._addRecord(records[i]); |
| } |
| |
| WebInspector.TimelineFrameController.prototype = { |
| _onRecordAdded: function(event) |
| { |
| this._addRecord(event.data); |
| }, |
| |
| _onRecordsCleared: function() |
| { |
| this._lastFrame = null; |
| }, |
| |
| _addRecord: function(record) |
| { |
| if (record.isBackground) |
| return; |
| var records; |
| var programRecord; |
| if (record.type === WebInspector.TimelineModel.RecordType.Program) { |
| programRecord = record; |
| if (this._lastFrame) |
| this._lastFrame.timeByCategory["other"] += WebInspector.TimelineModel.durationInSeconds(programRecord); |
| records = record["children"] || []; |
| } else |
| records = [record]; |
| records.forEach(this._innerAddRecord.bind(this, programRecord)); |
| }, |
| |
| /** |
| * @param {Object} programRecord |
| * @param {Object} record |
| */ |
| _innerAddRecord: function(programRecord, record) |
| { |
| var isFrameRecord = record.type === WebInspector.TimelineModel.RecordType.BeginFrame; |
| var programTimeCarryover = isFrameRecord && programRecord ? WebInspector.TimelineModel.endTimeInSeconds(programRecord) - WebInspector.TimelineModel.startTimeInSeconds(record) : 0; |
| if (isFrameRecord && this._lastFrame) |
| this._flushFrame(record, programTimeCarryover); |
| else { |
| if (!this._lastFrame) |
| this._lastFrame = this._createFrame(record, programTimeCarryover); |
| if (!record.thread) |
| WebInspector.TimelineModel.aggregateTimeForRecord(this._lastFrame.timeByCategory, record); |
| var duration = WebInspector.TimelineModel.durationInSeconds(record); |
| this._lastFrame.cpuTime += duration; |
| this._lastFrame.timeByCategory["other"] -= duration; |
| } |
| }, |
| |
| /** |
| * @param {Object} record |
| * @param {number} programTimeCarryover |
| */ |
| _flushFrame: function(record, programTimeCarryover) |
| { |
| this._lastFrame.endTime = WebInspector.TimelineModel.startTimeInSeconds(record); |
| this._lastFrame.duration = this._lastFrame.endTime - this._lastFrame.startTime; |
| this._lastFrame.timeByCategory["other"] -= programTimeCarryover; |
| // Alternatively, we could compute CPU time as sum of all Program events. |
| // This way it's a bit more flexible, as it works in case there's no program events. |
| this._lastFrame.cpuTime += this._lastFrame.timeByCategory["other"]; |
| this._overviewPane.addFrame(this._lastFrame); |
| this._presentationModel.addFrame(this._lastFrame); |
| this._lastFrame = this._createFrame(record, programTimeCarryover); |
| }, |
| |
| /** |
| * @param {Object} record |
| * @param {number} programTimeCarryover |
| */ |
| _createFrame: function(record, programTimeCarryover) |
| { |
| var frame = new WebInspector.TimelineFrame(); |
| frame.startTime = WebInspector.TimelineModel.startTimeInSeconds(record); |
| frame.startTimeOffset = this._model.recordOffsetInSeconds(record); |
| frame.timeByCategory["other"] = programTimeCarryover; |
| return frame; |
| }, |
| |
| dispose: function() |
| { |
| this._model.removeEventListener(WebInspector.TimelineModel.Events.RecordAdded, this._onRecordAdded, this); |
| this._model.removeEventListener(WebInspector.TimelineModel.Events.RecordsCleared, this._onRecordsCleared, this); |
| } |
| } |
| |
| /** |
| * @constructor |
| * @param {Array.<WebInspector.TimelineFrame>} frames |
| */ |
| WebInspector.FrameStatistics = function(frames) |
| { |
| this.frameCount = frames.length; |
| this.minDuration = Infinity; |
| this.maxDuration = 0; |
| this.timeByCategory = {}; |
| this.startOffset = frames[0].startTimeOffset; |
| var lastFrame = frames[this.frameCount - 1]; |
| this.endOffset = lastFrame.startTimeOffset + lastFrame.duration; |
| |
| var totalDuration = 0; |
| var sumOfSquares = 0; |
| for (var i = 0; i < this.frameCount; ++i) { |
| var duration = frames[i].duration; |
| totalDuration += duration; |
| sumOfSquares += duration * duration; |
| this.minDuration = Math.min(this.minDuration, duration); |
| this.maxDuration = Math.max(this.maxDuration, duration); |
| WebInspector.TimelineModel.aggregateTimeByCategory(this.timeByCategory, frames[i].timeByCategory); |
| } |
| this.average = totalDuration / this.frameCount; |
| var variance = sumOfSquares / this.frameCount - this.average * this.average; |
| this.stddev = Math.sqrt(variance); |
| } |
| |
| /** |
| * @constructor |
| */ |
| WebInspector.TimelineFrame = function() |
| { |
| this.timeByCategory = {}; |
| this.cpuTime = 0; |
| } |