96 lines
3.1 KiB
JavaScript
96 lines
3.1 KiB
JavaScript
/*
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* Copyright (C) 2019-2020 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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class Timer {
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constructor(name) {
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this.samples = [];
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this.parent = null;
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this.sample(name);
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const current = Timer.current;
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if (current !== null) {
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current.samples[current.samples.length - 1].children.push(this);
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this.parent = current;
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}
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Timer.current = this;
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}
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sample(name) {
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const time = window.performance.now();
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this.samples.push({
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name,
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time,
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children: []
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});
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}
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complete(skip) {
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this.sample('complete');
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Timer.current = this.parent;
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if (this.parent === null) {
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if (!skip) {
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console.log(this.toString());
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}
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} else {
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if (skip) {
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const sample = this.parent.samples[this.parent.samples.length - 1];
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sample.children.splice(sample.children.length - 1, 1);
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}
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}
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}
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duration(sampleIndex) {
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const sampleIndexIsValid = (typeof sampleIndex === 'number');
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const startIndex = (sampleIndexIsValid ? sampleIndex : 0);
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const endIndex = (sampleIndexIsValid ? sampleIndex + 1 : this.times.length - 1);
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return (this.times[endIndex].time - this.times[startIndex].time);
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}
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toString() {
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const indent = ' ';
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const name = this.samples[0].name;
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const duration = this.samples[this.samples.length - 1].time - this.samples[0].time;
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const extensionName = chrome.runtime.getManifest().name;
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return `${name} took ${duration.toFixed(8)}ms [${extensionName}]` + this._indentString(this.getSampleString(), indent);
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}
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getSampleString() {
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const indent = ' ';
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const duration = this.samples[this.samples.length - 1].time - this.samples[0].time;
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let message = '';
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for (let i = 0, ii = this.samples.length - 1; i < ii; ++i) {
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const sample = this.samples[i];
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const sampleDuration = this.samples[i + 1].time - sample.time;
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message += `\nSample[${i}] took ${sampleDuration.toFixed(8)}ms (${((sampleDuration / duration) * 100.0).toFixed(1)}%) [${sample.name}]`;
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for (const child of sample.children) {
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message += this._indentString(child.getSampleString(), indent);
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}
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}
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return message;
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}
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_indentString(message, indent) {
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return message.replace(/\n/g, `\n${indent}`);
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}
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}
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Timer.current = null;
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