iso-bench/lib/getDiff.js

Small benchmark library focused in avoiding optimization/deoptimization pollution between tests by isolating them.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getDiff = getDiff;
exports.getAsyncDiff = getAsyncDiff;
const perf_hooks_1 = require("perf_hooks");
function getDiff(cycles, callback, setup) {
    const setupData = setup && setup();
    const startTS = perf_hooks_1.performance.now();
    while (cycles-- > 0) {
        callback(setupData);
    }
    return perf_hooks_1.performance.now() - startTS;
}
function runAsync(cycles, callback, setup, resolve, reject) {
    let sync = true;
    while (cycles-- > 0 && sync) {
        sync = false;
        callback(() => {
            if (sync) {
                runAsync(cycles, callback, setup, resolve, reject);
            }
            else {
                sync = true;
            }
        }, reject, setup);
    }
    if (sync) {
        resolve();
    }
    else {
        sync = true;
    }
}
function getAsyncDiff(cycles, callback, setup) {
    return new Promise((resolve, reject) => {
        const setupData = setup && setup();
        const startTS = perf_hooks_1.performance.now();
        runAsync(cycles, callback, setupData, () => {
            resolve(perf_hooks_1.performance.now() - startTS);
        }, reject);
    });
}