ysbaddaden

class Bus(A, M)
  include GenServer

  def initialize
    @listeners = [] of A
  end

  # public interface

  def subscribe(listener : A) : Nil

ysbaddaden

#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdatomic.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <ucontext.h>

ysbaddaden

commit 921120d96c175d997d815805bdeced4b4fbb0cfa (HEAD -> fix/transparently-rewrite-unauthenticated-github-url-to-https)
Author: Julien Portalier <julien@portalier.com>
Date:   Tue Apr 5 18:37:34 2022 +0200

    Fix: rewrite GitHub unauthenticated URL

    Rewrites the URL on-the-fly and transparently from git://github.com
    to https://github.com because GitHub no longer supports the
    unauthenticated git protocol anymore.

ysbaddaden

# frozen_string_literal: true

require "fiber"
require "nio"
require "timers"

module Earl
  class Scheduler
    def initialize
      @selector = NIO::Selector.new

ysbaddaden

// Crée un JSON Web Token pour l'extranet, signé via HMAC SHA 256, permettant
// d'identifier le CaC sur l'extranet comme utilisateur ayant accès à toutes les
// données.
PROCÉDURE CréerTokenExtranet()

// header du token (algorithm, type) :
taHeader est un tableau associatif de chaînes
taHeader["alg"] = "HS256"
taHeader["typ"] = "JWT"

ysbaddaden

#! /usr/bin/env ruby
#
# A bootstrap to install locked Crystal Shards dependencies. Written in Ruby so
# it doesn't need Crystal. This coul be useful to extract stdlib as distinct
# shards from the main crystal-lang/crystal repository, while still allowing to
# install and distribute them to build crystal, avoiding the crystal <-> shards
# requirement loop.
require "yaml"

# helpers:

ysbaddaden

#! /usr/bin/env sh

ARGS=$*
TASK=$1
NAME=rails-task-$(echo $TASK | sed 's/:/-/g')
[ -z $TMP ] && TMP=tmp
[ -z $DOCKER_IMAGE ] && DOCKER_IMAGE=eu.gcr.io/project/app:latest

cleanup() {
  # delete the temporary yaml definition and delete the Kubernetes job:

ysbaddaden

Crystal MTs (Multi Threaded schedulers)

Goals:

• developers must only care about fibers and channels;
• crystal runtime should start 1 upto N threads;
• each thread can take & resume any fiber in the loop;
• channels as user-code sync primitives;
• also propose fiber-aware mutex/monitors;
• additional sync primitives (e.g. IO events, ...)

ysbaddaden

require "./syslog"

syslog = Syslog.new
syslog.info "bla bla bla"

# $ tail -n1 /var/log/syslog
# Aug 18 00:55:05 xps crystal-run-syslog.tmp[27911]: bla bla bla

ysbaddaden

# Requires https://github.com/ysbaddaden/sdl.cr
require "sdl"

# Depends on the Crystal::Hasher implementation.
# Adjust to match the type of `"".hash`
alias HashType = UInt64

word_count = 0
maximum = 0
collisions = 0