Fun with the processes - Workshop

This workshop will introduce you to the basics of the process management and other constructs provided in the language and standard libraries.

Workshop

To run this workshop you will need the workshop mix tasks to be installed.

git clone https://github.com/silesian-beamers/fun-with-the-processes
cd fun-with-the-processes
mix archive.install workshop-0.5.1.ez

The workshop tasks should now be available and you are ready to run the workshop.

You can check if you have everything set up correctly with mix workshop.doctor.

What's next?

Type mix workshop.next in the terminal to start the workshop, and have fun!

Playground

Sample application which will help understand and show a different point of view for Erlang / Elixir systems.

1. How to start the playground?

• ~ $ iex -S mix

2. How to start the observer?

• iex(1)> :observer.start()

3. How to start visualization?

• iex(1)> ProcessesPlayground.start_visualization()

FAQ

• Q: I've spawned a new process in the shell and I can't see it in the :observer Applications tab. What's wrong with you Erlang?
  • A: Long story short, REPL (so user_drv process) is a parent for that process, but immediately after linking it reverts that operation and adds a monitor to a newly created process. Why? In order to have stable shell and minimize the risk that a faulty process will kill the session. More details you can find here: http://ferd.ca/repl-a-bit-more-and-less-than-that.html