Add erlang.whereis() for Python to lookup registered Erlang PIDs#39
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Add erlang.whereis() for Python to lookup registered Erlang PIDs#39
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Implement whereis lookup that allows Python code to find Erlang processes
registered with erlang:register/2.
Implementation:
- Add erlang.whereis() Python function that accepts str, bytes, or Atom
- Use Erlang callback mechanism (_whereis) instead of direct enif_whereis_pid
to avoid crashes with certain OTP configurations
- Register _whereis callback in py_callback:register_callbacks/0 at startup
Usage:
pid = erlang.whereis("my_server") # Returns Pid or None
pid = erlang.whereis(erlang.atom("my_server")) # Also works with atoms
Tests:
- test_whereis_registered_process: lookup existing registered process
- test_whereis_nonexistent: lookup non-registered name returns None
- test_whereis_with_atom: lookup using erlang.Atom type
- test_whereis_with_bytes: lookup using bytes
- test_whereis_invalid_type: invalid argument raises TypeError
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Summary
erlang.whereis()Python function to lookup registered Erlang processesUsage