mafintosh’s gists

mafintosh / gist:8f2dcb00766f3db4c2d37f594f8381e3

Created November 1, 2023 14:48

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mafintosh / trace-mallocs.c

Last active April 7, 2022 19:25

	#include <dlfcn.h>

	static int mallocs_active = 0;

	void *malloc(size_t size) {
	void * (*real_malloc)(size_t);
	real_malloc = dlsym(RTLD_NEXT, "malloc");

	mallocs_active++;
	void *ptr = real_malloc(size);

mafintosh / promise-unhandled-why.js

Last active March 30, 2022 06:30

promise-unhandled-why.js

	start()

	async function start () {
	const promises = [
	new Promise((resolve, reject) => setTimeout(reject, 1000)),
	Promise.reject(),
	Promise.reject()
	]

	for (const a of promises) {

mafintosh / index.html

Created July 25, 2020 19:24

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Hello World!</title>
	</head>
	<body>
	<video src="custom://u" controls></video>
	<!-- <video src="http://localhost:9999" controls></video> -->
	</body>

mafintosh / sodium-benchmark.txt

Created June 25, 2020 13:20

	╔════════════════════════════════════════════════════════╤═════════╤═══════════════════╤═══════════╤═════════════════════════╗
	║ Slower tests │ Samples │ Result │ Tolerance │ Difference with slowest ║
	╟────────────────────────────────────────────────────────┼─────────┼───────────────────┼───────────┼─────────────────────────╢
	║ crypto sha256 (prealloc) │ 10000 │ 370321.25 op/sec │ ± 4.65 % │ ║
	║ crypto sha512 (prealloc) │ 1000 │ 382075.76 op/sec │ ± 0.94 % │ + 3.17 % ║
	║ crypto blake2b512 (prealloc) │ 1000 │ 401530.47 op/sec │ ± 0.98 % │ + 8.43 % ║
	║ crypto sha256 (no prealloc) │ 1000 │ 453419.74 op/sec │ ± 0.80 % │ + 22.44 % ║
	║ crypto sha512 (no prealloc) │ 1000 │ 460150.51 op/sec │ ± 0.69 % │ + 24.26 % ║
	║ crypto

mafintosh / gist:996d820ad8fec6f3369ab00251f40358

Created June 25, 2020 12:15

	╔═════════════════════════════════════════════╤═════════╤═══════════════════╤═══════════╤═════════════════════════╗
	║ Slower tests │ Samples │ Result │ Tolerance │ Difference with slowest ║
	╟─────────────────────────────────────────────┼─────────┼───────────────────┼───────────┼─────────────────────────╢
	║ crypto sha512 (prealloc) │ 10000 │ 340764.93 op/sec │ ± 6.40 % │ ║
	║ crypto sha256 (prealloc) │ 1000 │ 357872.79 op/sec │ ± 0.63 % │ + 5.02 % ║
	║ crypto blake2b512 (prealloc) │ 1000 │ 374023.05 op/sec │ ± 0.96 % │ + 9.76 % ║
	║ crypto sha256 (no prealloc) │ 10000 │ 416877.14 op/sec │ ± 8.05 % │ + 22.34 % ║
	║ crypto blake2b512 (no prealloc) │ 10000 │ 454022.65 op/sec │ ± 8.32 % │ + 33.24 % ║
	║ crypto sha512 (no prealloc) │ 1000 │ 468638.04 op/sec │ ± 0.72 % │ + 37.5

mafintosh / test.js

Created May 13, 2020 10:37

	const events = new require('events')
	const { once } = events

	const e = new events.EventEmitter()

	main()

	async function main () {
	await once(e, 'foo')
	console.log('foo was emitted')

mafintosh / test.js

Created May 13, 2020 10:37

	const events = new require('events')
	const { once } = events

	const e = new events.EventEmitter()

	main()

	async function main () {
	await once(e, 'foo')
	console.log('foo was emitted')

mafintosh / passthrough-writable.js

Created May 5, 2020 13:40

	const Duplexify = require('duplexify')
	const clone = require('cloneable-readable')

	class PassthroughWritable extends Duplexify {
	constructor (ws) {
	super()
	const pt = new stream.PassThrough()
	this.setWritable(stream.pipeline(pt, ws))
	this.setReadable(clone(pt))
	}

mafintosh / process-queue.js

Last active March 5, 2020 16:43

	const queue = new Signal()
	const done = new Signal()

	const pending = []
	async function runQueue () {
	while (!pending.length && await queue.wait());

	const current = pending
	pending = []
	await process(current)

Mathias Buus mafintosh