79 lines
2.0 KiB
JavaScript
79 lines
2.0 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = getCores;
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exports.detectRealCores = detectRealCores;
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function _os() {
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const data = _interopRequireDefault(require("os"));
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_os = function () {
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return data;
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};
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return data;
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}
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function _child_process() {
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const data = require("child_process");
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_child_process = function () {
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return data;
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};
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return data;
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}
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const exec = command => {
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try {
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let stdout = (0, _child_process().execSync)(command, {
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encoding: 'utf8',
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// This prevents the command from outputting to the console
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stdio: [null, null, null]
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});
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return stdout.trim();
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} catch (e) {
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return '';
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}
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};
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function detectRealCores() {
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let platform = _os().default.platform();
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let amount = 0;
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if (platform === 'linux') {
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amount = parseInt(exec('lscpu -p | egrep -v "^#" | sort -u -t, -k 2,4 | wc -l'), 10);
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} else if (platform === 'darwin') {
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amount = parseInt(exec('sysctl -n hw.physicalcpu_max'), 10);
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} else if (platform === 'win32') {
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const str = exec('wmic cpu get NumberOfCores').match(/\d+/g);
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if (str !== null) {
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amount = parseInt(str.filter(n => n !== '')[0], 10);
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}
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}
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if (!amount || amount <= 0) {
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throw new Error('Could not detect cpu count!');
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}
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return amount;
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}
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let cores;
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function getCores(bypassCache = false) {
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// Do not re-run commands if we already have the count...
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if (cores && !bypassCache) {
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return cores;
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}
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// $FlowFixMe
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if (process.browser) {
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// eslint-disable-next-line no-undef
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cores = navigator.hardwareConcurrency / 2;
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}
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if (!cores) {
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try {
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cores = detectRealCores();
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} catch (e) {
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// Guess the amount of real cores
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cores = _os().default.cpus().filter((cpu, index) => !cpu.model.includes('Intel') || index % 2 === 1).length;
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}
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}
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// Another fallback
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if (!cores) {
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cores = 1;
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}
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return cores;
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}
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