104 lines
No EOL
2.6 KiB
JavaScript
104 lines
No EOL
2.6 KiB
JavaScript
// @flow
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import type { PerformanceTrack, SetPageVisibility } from '../messages';
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import type { Timed } from '../Timed';
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import ListWalker from './ListWalker';
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type TimedPerformanceTrack = Timed & PerformanceTrack;
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type TimedSetPageVisibility = Timed & SetPageVisibility;
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type PerformanceChartPoint = {
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time: number,
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usedHeap: number,
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totalHeap: number,
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fps: ?number,
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cpu: ?number,
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nodesCount: number,
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}
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export default class PerformanceTrackManager extends ListWalker<TimedPerformanceTrack> {
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#chart: Array<PerformanceChartPoint> = [];
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#isHidden: boolean = false;
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#timeCorrection: number = 0;
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#heapAvaliable: boolean = false;
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#fpsAvaliable: boolean = false;
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#cpuAvaliable: boolean = false;
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#prevTime: ?number = null;
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#prevNodesCount: number = 0;
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add(msg: TimedPerformanceTrack):void {
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let fps = null;
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let cpu = null;
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if (!this.#isHidden && this.#prevTime != null) {
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let timePassed = msg.time - this.#prevTime + this.#timeCorrection;
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if (timePassed > 0 && msg.frames >= 0) {
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if (msg.frames > 0) { this.#fpsAvaliable = true; }
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fps = msg.frames*1e3/timePassed; // Multiply by 1e3 as time in ms;
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fps = Math.min(fps,60); // What if 120? TODO: alert if more than 60
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if (this.#chart.length === 1) {
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this.#chart[0].fps = fps;
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}
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}
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if (timePassed > 0 && msg.ticks >= 0) {
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this.#cpuAvaliable = true;
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let tickRate = msg.ticks * 30 / timePassed;
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if (tickRate > 1) {
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tickRate = 1;
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}
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cpu = Math.round(100 - tickRate*100);
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if (this.#chart.length === 1) {
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this.#chart[0].cpu = cpu;
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}
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}
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}
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this.#prevTime = msg.time;
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this.#timeCorrection = 0
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this.#heapAvaliable = this.#heapAvaliable || msg.usedJSHeapSize > 0;
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this.#chart.push({
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usedHeap: msg.usedJSHeapSize,
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totalHeap: msg.totalJSHeapSize,
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fps,
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cpu,
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time: msg.time,
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nodesCount: this.#prevNodesCount,
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});
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super.add(msg);
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}
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setCurrentNodesCount(count: number) {
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this.#prevNodesCount = count;
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if (this.#chart.length > 0) {
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this.#chart[ this.#chart.length - 1 ].nodesCount = count;
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}
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}
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handleVisibility(msg: TimedSetPageVisibility):void {
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if (!this.#isHidden && msg.hidden && this.#prevTime != null) {
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this.#timeCorrection = msg.time - this.#prevTime;
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}
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if (this.#isHidden && !msg.hidden) {
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this.#prevTime = msg.time;
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}
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this.#isHidden = msg.hidden;
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}
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get chartData(): Array<PerformanceChartPoint> {
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return this.#chart;
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}
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get avaliability(): { cpu: boolean, fps: boolean, heap: boolean } {
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return {
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cpu: this.#cpuAvaliable,
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fps: this.#fpsAvaliable,
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heap: this.#heapAvaliable,
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nodes: true,
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}
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}
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} |