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meta: merge node/master into node-chakracore/master
Merge 6e3818f as of 2018-01-10 This commit was automatically generated. For any problems, please contact jackhorton Reviewed-By: Taylor Woll <tawoll@ntdev.microsoft.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| // test the speed of .pipe() with JSStream wrapping for PassThrough streams | ||
| 'use strict'; | ||
|
|
||
| const common = require('../common.js'); | ||
| const { PassThrough } = require('stream'); | ||
|
|
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| const bench = common.createBenchmark(main, { | ||
| len: [102400, 1024 * 1024 * 16], | ||
| type: ['utf', 'asc', 'buf'], | ||
| dur: [5], | ||
| }, { | ||
| flags: ['--expose-internals'] | ||
| }); | ||
|
|
||
| var dur; | ||
| var len; | ||
| var type; | ||
| var chunk; | ||
| var encoding; | ||
| var JSStreamWrap; // Can only require internals inside main(). | ||
|
|
||
| function main(conf) { | ||
| dur = +conf.dur; | ||
| len = +conf.len; | ||
| type = conf.type; | ||
| JSStreamWrap = require('internal/wrap_js_stream'); | ||
|
|
||
| switch (type) { | ||
| case 'buf': | ||
| chunk = Buffer.alloc(len, 'x'); | ||
| break; | ||
| case 'utf': | ||
| encoding = 'utf8'; | ||
| chunk = 'ü'.repeat(len / 2); | ||
| break; | ||
| case 'asc': | ||
| encoding = 'ascii'; | ||
| chunk = 'x'.repeat(len); | ||
| break; | ||
| default: | ||
| throw new Error(`invalid type: ${type}`); | ||
| } | ||
|
|
||
| doBenchmark(); | ||
| } | ||
|
|
||
| function Writer() { | ||
| this.received = 0; | ||
| this.writable = true; | ||
| } | ||
|
|
||
| Writer.prototype.write = function(chunk, encoding, cb) { | ||
| this.received += chunk.length; | ||
|
|
||
| if (typeof encoding === 'function') | ||
| encoding(); | ||
| else if (typeof cb === 'function') | ||
| cb(); | ||
|
|
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| return true; | ||
| }; | ||
|
|
||
| // doesn't matter, never emits anything. | ||
| Writer.prototype.on = function() {}; | ||
| Writer.prototype.once = function() {}; | ||
| Writer.prototype.emit = function() {}; | ||
| Writer.prototype.prependListener = function() {}; | ||
|
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||
|
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| function flow() { | ||
| const dest = this.dest; | ||
| const res = dest.write(chunk, encoding); | ||
| if (!res) | ||
| dest.once('drain', this.flow); | ||
| else | ||
| process.nextTick(this.flow); | ||
| } | ||
|
|
||
| function Reader() { | ||
| this.flow = flow.bind(this); | ||
| this.readable = true; | ||
| } | ||
|
|
||
| Reader.prototype.pipe = function(dest) { | ||
| this.dest = dest; | ||
| this.flow(); | ||
| return dest; | ||
| }; | ||
|
|
||
|
|
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| function doBenchmark() { | ||
| const reader = new Reader(); | ||
| const writer = new Writer(); | ||
|
|
||
| // the actual benchmark. | ||
| const fakeSocket = new JSStreamWrap(new PassThrough()); | ||
| bench.start(); | ||
| reader.pipe(fakeSocket); | ||
| fakeSocket.pipe(writer); | ||
|
|
||
| setTimeout(function() { | ||
| const bytes = writer.received; | ||
| const gbits = (bytes * 8) / (1024 * 1024 * 1024); | ||
| bench.end(gbits); | ||
| process.exit(0); | ||
| }, dur * 1000); | ||
| } |
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