debug-server-next
Version:
Dev server for hippy-core.
206 lines (205 loc) • 8.12 kB
JavaScript
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable rulesdir/no_underscored_properties */
import * as Common from '../../core/common/common.js';
import * as SDK from '../../core/sdk/sdk.js';
import * as TimelineModel from '../../models/timeline_model/timeline_model.js';
import { TimelineUIUtils } from './TimelineUIUtils.js';
export class PerformanceModel extends Common.ObjectWrapper.ObjectWrapper {
_mainTarget;
_tracingModel;
_filters;
_timelineModel;
_frameModel;
_filmStripModel;
_irModel;
_window;
_extensionTracingModels;
_recordStartTime;
constructor() {
super();
this._mainTarget = null;
this._tracingModel = null;
this._filters = [];
this._timelineModel = new TimelineModel.TimelineModel.TimelineModelImpl();
this._frameModel = new TimelineModel.TimelineFrameModel.TimelineFrameModel(event => TimelineUIUtils.eventStyle(event).category.name);
this._filmStripModel = null;
this._irModel = new TimelineModel.TimelineIRModel.TimelineIRModel();
this._window = { left: 0, right: Infinity };
this._extensionTracingModels = [];
this._recordStartTime = undefined;
}
setMainTarget(target) {
this._mainTarget = target;
}
mainTarget() {
return this._mainTarget;
}
setRecordStartTime(time) {
this._recordStartTime = time;
}
recordStartTime() {
return this._recordStartTime;
}
setFilters(filters) {
this._filters = filters;
}
filters() {
return this._filters;
}
isVisible(event) {
return this._filters.every(f => f.accept(event));
}
setTracingModel(model) {
this._tracingModel = model;
this._timelineModel.setEvents(model);
let inputEvents = null;
let animationEvents = null;
for (const track of this._timelineModel.tracks()) {
if (track.type === TimelineModel.TimelineModel.TrackType.Input) {
inputEvents = track.asyncEvents;
}
if (track.type === TimelineModel.TimelineModel.TrackType.Animation) {
animationEvents = track.asyncEvents;
}
}
if (inputEvents || animationEvents) {
this._irModel.populate(inputEvents || [], animationEvents || []);
}
const mainTracks = this._timelineModel.tracks().filter(track => track.type === TimelineModel.TimelineModel.TrackType.MainThread && track.forMainFrame &&
track.events.length);
const threadData = mainTracks.map(track => {
const event = track.events[0];
return { thread: event.thread, time: event.startTime };
});
this._frameModel.addTraceEvents(this._mainTarget, this._timelineModel.inspectedTargetEvents(), threadData);
for (const entry of this._extensionTracingModels) {
entry.model.adjustTime(this._tracingModel.minimumRecordTime() + (entry.timeOffset / 1000) - this._recordStartTime);
}
this._autoWindowTimes();
}
addExtensionEvents(title, model, timeOffset) {
this._extensionTracingModels.push({ model: model, title: title, timeOffset: timeOffset });
if (!this._tracingModel) {
return;
}
model.adjustTime(this._tracingModel.minimumRecordTime() + (timeOffset / 1000) - this._recordStartTime);
this.dispatchEventToListeners(Events.ExtensionDataAdded);
}
tracingModel() {
if (!this._tracingModel) {
throw 'call setTracingModel before accessing PerformanceModel';
}
return this._tracingModel;
}
timelineModel() {
return this._timelineModel;
}
filmStripModel() {
if (this._filmStripModel) {
return this._filmStripModel;
}
if (!this._tracingModel) {
throw 'call setTracingModel before accessing PerformanceModel';
}
this._filmStripModel = new SDK.FilmStripModel.FilmStripModel(this._tracingModel);
return this._filmStripModel;
}
frames() {
return this._frameModel.getFrames();
}
frameModel() {
return this._frameModel;
}
interactionRecords() {
return this._irModel.interactionRecords();
}
extensionInfo() {
return this._extensionTracingModels;
}
dispose() {
if (this._tracingModel) {
this._tracingModel.dispose();
}
for (const extensionEntry of this._extensionTracingModels) {
extensionEntry.model.dispose();
}
}
filmStripModelFrame(frame) {
// For idle frames, look at the state at the beginning of the frame.
const screenshotTime = frame.idle ? frame.startTime : frame.endTime;
const filmStripModel = this._filmStripModel;
const filmStripFrame = filmStripModel.frameByTimestamp(screenshotTime);
return filmStripFrame && filmStripFrame.timestamp - frame.endTime < 10 ? filmStripFrame : null;
}
save(stream) {
if (!this._tracingModel) {
throw 'call setTracingModel before accessing PerformanceModel';
}
const backingStorage = this._tracingModel.backingStorage();
return backingStorage.writeToStream(stream);
}
setWindow(window, animate) {
this._window = window;
this.dispatchEventToListeners(Events.WindowChanged, { window, animate });
}
window() {
return this._window;
}
_autoWindowTimes() {
const timelineModel = this._timelineModel;
let tasks = [];
for (const track of timelineModel.tracks()) {
// Deliberately pick up last main frame's track.
if (track.type === TimelineModel.TimelineModel.TrackType.MainThread && track.forMainFrame) {
tasks = track.tasks;
}
}
if (!tasks.length) {
this.setWindow({ left: timelineModel.minimumRecordTime(), right: timelineModel.maximumRecordTime() });
return;
}
function findLowUtilizationRegion(startIndex, stopIndex) {
const threshold = 0.1;
let cutIndex = startIndex;
let cutTime = (tasks[cutIndex].startTime + tasks[cutIndex].endTime) / 2;
let usedTime = 0;
const step = Math.sign(stopIndex - startIndex);
for (let i = startIndex; i !== stopIndex; i += step) {
const task = tasks[i];
const taskTime = (task.startTime + task.endTime) / 2;
const interval = Math.abs(cutTime - taskTime);
if (usedTime < threshold * interval) {
cutIndex = i;
cutTime = taskTime;
usedTime = 0;
}
usedTime += task.duration;
}
return cutIndex;
}
const rightIndex = findLowUtilizationRegion(tasks.length - 1, 0);
const leftIndex = findLowUtilizationRegion(0, rightIndex);
let leftTime = tasks[leftIndex].startTime;
let rightTime = tasks[rightIndex].endTime;
const span = rightTime - leftTime;
const totalSpan = timelineModel.maximumRecordTime() - timelineModel.minimumRecordTime();
if (span < totalSpan * 0.1) {
leftTime = timelineModel.minimumRecordTime();
rightTime = timelineModel.maximumRecordTime();
}
else {
leftTime = Math.max(leftTime - 0.05 * span, timelineModel.minimumRecordTime());
rightTime = Math.min(rightTime + 0.05 * span, timelineModel.maximumRecordTime());
}
this.setWindow({ left: leftTime, right: rightTime });
}
}
// TODO(crbug.com/1167717): Make this a const enum again
// eslint-disable-next-line rulesdir/const_enum
export var Events;
(function (Events) {
Events["ExtensionDataAdded"] = "ExtensionDataAdded";
Events["WindowChanged"] = "WindowChanged";
})(Events || (Events = {}));