Listing all processes (pids)?

[Nytz12]

Hi

I would like to be able to track the state of all my spawned agents.

Is there any way to list all pids in Elixir?

[José Valim]

If you want to track them, you should put them in a supervisor and traverse the supervisor. You can use Process.list and Process.registered to retrieve processes but it will retrieve all processes *in the system*.

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Director of R&D

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[Nytz12]

I see

When I set up a supervisor, it is started with the application and defines a number of worker processes to watch. However, I am not sure how to dynamically add new processes to a supervisor.

Usually 

[Peter Hamilton]

Supervisor.start_child allows you to dynamically add workers to a supervisor.

However, you likely want to use simple_one_for_one as the strategy for the supervisor. Instead of giving it a list of workers when starting it, you give it a blueprint for each dynamic worker. You then call Supervisor.start_child and just pass a few arguments, which are appended to the ones in the blueprint already provided.

To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-talk/ced357a6-19f1-4b70-b521-f561edeeda1c%40googlegroups.com.