// Copyright 2021 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. export const KB = 1024; export const MB = KB * KB; export const GB = MB * KB; export const kMillis2Seconds = 1 / 1000; export const kMicro2Milli = 1 / 1000; export function formatBytes(bytes, digits = 2) { const units = ['B', 'KiB', 'MiB', 'GiB']; const divisor = 1024; let index = 0; while (index < units.length && bytes >= divisor) { index++; bytes /= divisor; } return bytes.toFixed(digits) + units[index]; } export function formatMicroSeconds(micro) { return (micro * kMicro2Milli).toFixed(1) + 'ms'; } export function formatDurationMicros(micros, digits = 3) { return formatDurationMillis(micros * kMicro2Milli, digits); } export function formatMillis(millis, digits = 3) { return formatDurationMillis(millis, digits); } export function formatDurationMillis(millis, digits = 3) { if (millis < 1000) { if (millis < 1) { if (millis == 0) return (0).toFixed(digits) + 's'; return (millis / kMicro2Milli).toFixed(digits) + 'ns'; } return millis.toFixed(digits) + 'ms'; } let seconds = millis / 1000; const hours = Math.floor(seconds / 3600); const minutes = Math.floor((seconds % 3600) / 60); seconds = seconds % 60; let buffer = ''; if (hours > 0) buffer += hours + 'h '; if (hours > 0 || minutes > 0) buffer += minutes + 'm '; buffer += seconds.toFixed(digits) + 's'; return buffer; } // Get the offset in the 4GB virtual memory cage. export function calcOffsetInVMCage(address) { let mask = (1n << 32n) - 1n; let ret = Number(address & mask); return ret; } export function delay(time) { return new Promise(resolver => setTimeout(resolver, time)); } export function defer() { let resolve_func, reject_func; const p = new Promise((resolve, reject) => { resolve_func = resolve; reject_func = resolve; }); p.resolve = resolve_func; p.reject = reject_func; return p; } const kSimpleHtmlEscapeRegexp = /[\&\n><]/g; function escaperFn(char) { return `&#${char.charCodeAt(0)};`; } export function simpleHtmlEscape(string) { return string.replace(kSimpleHtmlEscapeRegexp, escaperFn); }