1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
'use strict';
var common = require('../common');
var bench = common.createBenchmark(main, {
encoding: ['utf8', 'base64'],
len: [1, 2, 4, 16, 64, 256], // x16
n: [5e6]
});
// 16 chars each
var chars = [
'hello brendan!!!', // 1 byte
'ΰαβγδεζηθικλμνξο', // 2 bytes
'挰挱挲挳挴挵挶挷挸挹挺挻挼挽挾挿', // 3 bytes
'𠜎𠜱𠝹𠱓𠱸𠲖𠳏𠳕𠴕𠵼𠵿𠸎𠸏𠹷𠺝𠺢' // 4 bytes
];
function main(conf) {
var n = conf.n | 0;
var len = conf.len | 0;
var encoding = conf.encoding;
var strings = [];
for (var string of chars) {
// Strings must be built differently, depending on encoding
var data = buildString(string, len);
if (encoding === 'utf8') {
strings.push(data);
} else if (encoding === 'base64') {
// Base64 strings will be much longer than their UTF8 counterparts
strings.push(Buffer.from(data, 'utf8').toString('base64'));
}
}
// Check the result to ensure it is *properly* optimized
var results = strings.map(function(val) {
return Buffer.byteLength(val, encoding);
});
bench.start();
for (var i = 0; i < n; i++) {
var index = n % strings.length;
// Go!
var r = Buffer.byteLength(strings[index], encoding);
if (r !== results[index])
throw new Error('incorrect return value');
}
bench.end(n);
}
function buildString(str, times) {
if (times == 1) return str;
return str + buildString(str, times - 1);
}
|
