blob: 172440e4726fc8ed5314cb43e9c8edf5122ce135 [file] [log] [blame]
/*
* Copyright (C) 2016 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
WI.MemoryTimelineRecord = class MemoryTimelineRecord extends WI.TimelineRecord
{
constructor(timestamp, categories)
{
super(WI.TimelineRecord.Type.Memory, timestamp - MemoryTimelineRecord.samplingRatePerSecond, timestamp);
console.assert(typeof timestamp === "number");
console.assert(categories instanceof Array);
this._timestamp = timestamp;
this._categories = WI.MemoryTimelineRecord.memoryCategoriesFromProtocol(categories);
this._exportCategories = categories;
this._totalSize = 0;
for (let {size} of categories)
this._totalSize += size;
}
// Static
static get samplingRatePerSecond()
{
// 500ms. This matches the ResourceUsageThread sampling frequency in the backend.
return 0.5;
}
static memoryCategoriesFromProtocol(categories)
{
let javascriptSize = 0;
let imagesSize = 0;
let layersSize = 0;
let pageSize = 0;
for (let {type, size} of categories) {
switch (type) {
case MemoryAgent.CategoryDataType.JavaScript:
case MemoryAgent.CategoryDataType.JIT:
javascriptSize += size;
break;
case MemoryAgent.CategoryDataType.Images:
imagesSize += size;
break;
case MemoryAgent.CategoryDataType.Layers:
layersSize += size;
break;
case MemoryAgent.CategoryDataType.Page:
case MemoryAgent.CategoryDataType.Other:
pageSize += size;
break;
default:
console.warn("Unhandled Memory.CategoryDataType: " + type);
break;
}
}
return [
{type: WI.MemoryCategory.Type.JavaScript, size: javascriptSize},
{type: WI.MemoryCategory.Type.Images, size: imagesSize},
{type: WI.MemoryCategory.Type.Layers, size: layersSize},
{type: WI.MemoryCategory.Type.Page, size: pageSize},
];
}
// Import / Export
static fromJSON(json)
{
let {timestamp, categories} = json;
return new WI.MemoryTimelineRecord(timestamp, categories);
}
toJSON()
{
return {
type: this.type,
timestamp: this.startTime,
categories: this._exportCategories,
};
}
// Public
get timestamp() { return this._timestamp; }
get categories() { return this._categories; }
get totalSize() { return this._totalSize; }
get unadjustedStartTime() { return this._timestamp; }
adjustStartTime(startTime)
{
console.assert(startTime < this._endTime);
this._startTime = startTime;
}
};