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