2906fa833dSigned-off-by: Mert Can Altin <mertgold60@gmail.com> PR-URL: https://github.com/nodejs/node/pull/63370 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Daniel Lemire <daniel@lemire.me> Reviewed-By: Gürgün Dayıoğlu <hey@gurgun.day>
62 lines
1.5 KiB
JavaScript
62 lines
1.5 KiB
JavaScript
'use strict';
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const common = require('../common.js');
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const fs = require('fs');
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const path = require('path');
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const tmpdir = require('../../test/common/tmpdir');
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const bench = common.createBenchmark(main, {
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size: [64, 1024, 16384, 262144, 4194304],
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content: ['ascii', 'latin1', 'utf8_mixed'],
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source: ['path', 'fd'],
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n: [3e3],
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});
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function buildContent(kind, size) {
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if (kind === 'ascii') {
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return Buffer.alloc(size, 0x61); // 'a'
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}
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if (kind === 'latin1') {
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// 'é' in UTF-8 is 0xC3 0xA9 (2 bytes per char)
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const pair = Buffer.from([0xC3, 0xA9]);
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const buf = Buffer.alloc(size);
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for (let i = 0; i + 2 <= size; i += 2) pair.copy(buf, i);
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return buf;
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}
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if (kind === 'utf8_mixed') {
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// mixed ASCII + 3-byte CJK (U+4E2D 中 = E4 B8 AD)
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const cjk = Buffer.from([0xE4, 0xB8, 0xAD]);
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const buf = Buffer.alloc(size);
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let i = 0;
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while (i + 4 <= size) {
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buf[i++] = 0x61;
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cjk.copy(buf, i);
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i += 3;
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}
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return buf;
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}
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throw new Error('unknown content: ' + kind);
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}
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function main({ n, size, content, source }) {
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tmpdir.refresh();
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const file = path.join(tmpdir.path, `bench-${content}-${size}.bin`);
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fs.writeFileSync(file, buildContent(content, size));
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let arg;
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let shouldClose = false;
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if (source === 'fd') {
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arg = fs.openSync(file, 'r');
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shouldClose = true;
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} else {
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arg = file;
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}
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bench.start();
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for (let i = 0; i < n; i++) {
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fs.readFileSync(arg, 'utf8');
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}
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bench.end(n);
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if (shouldClose) fs.closeSync(arg);
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}
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