Andrew Zambazos
124 lines
4.4 KiB
JavaScript
124 lines
4.4 KiB
JavaScript
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WI.MemoryTimelineRecord = class MemoryTimelineRecord extends WI.TimelineRecord
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{
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constructor(timestamp, categories)
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{
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super(WI.TimelineRecord.Type.Memory, timestamp - MemoryTimelineRecord.samplingRatePerSecond, timestamp);
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console.assert(typeof timestamp === "number");
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console.assert(categories instanceof Array);
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this._timestamp = timestamp;
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this._categories = WI.MemoryTimelineRecord.memoryCategoriesFromProtocol(categories);
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this._exportCategories = categories;
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this._totalSize = 0;
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for (let {size} of categories)
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this._totalSize += size;
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}
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// Static
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static get samplingRatePerSecond()
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{
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// 500ms. This matches the ResourceUsageThread sampling frequency in the backend.
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return 0.5;
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}
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static memoryCategoriesFromProtocol(categories)
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{
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let javascriptSize = 0;
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let imagesSize = 0;
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let layersSize = 0;
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let pageSize = 0;
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for (let {type, size} of categories) {
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switch (type) {
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case InspectorBackend.Enum.Memory.CategoryDataType.JavaScript:
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case InspectorBackend.Enum.Memory.CategoryDataType.JIT:
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javascriptSize += size;
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break;
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case InspectorBackend.Enum.Memory.CategoryDataType.Images:
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imagesSize += size;
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break;
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case InspectorBackend.Enum.Memory.CategoryDataType.Layers:
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layersSize += size;
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break;
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case InspectorBackend.Enum.Memory.CategoryDataType.Page:
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case InspectorBackend.Enum.Memory.CategoryDataType.Other:
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pageSize += size;
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break;
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default:
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console.warn("Unhandled Memory.CategoryDataType: " + type);
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break;
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}
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}
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let memoryCategories = [];
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if (javascriptSize)
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memoryCategories.push({type: WI.MemoryCategory.Type.JavaScript, size: javascriptSize});
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if (imagesSize)
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memoryCategories.push({type: WI.MemoryCategory.Type.Images, size: imagesSize});
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if (layersSize)
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memoryCategories.push({type: WI.MemoryCategory.Type.Layers, size: layersSize});
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if (pageSize)
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memoryCategories.push({type: WI.MemoryCategory.Type.Page, size: pageSize});
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return memoryCategories;
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}
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// Import / Export
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static async fromJSON(json)
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{
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let {timestamp, categories} = json;
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return new WI.MemoryTimelineRecord(timestamp, categories);
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}
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toJSON()
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{
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return {
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type: this.type,
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timestamp: this.startTime,
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categories: this._exportCategories,
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};
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}
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// Public
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get timestamp() { return this._timestamp; }
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get categories() { return this._categories; }
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get totalSize() { return this._totalSize; }
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get unadjustedStartTime() { return this._timestamp; }
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adjustStartTime(startTime)
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{
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console.assert(startTime < this._endTime);
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this._startTime = startTime;
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}
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};
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