sysashi
Stopping/exiting GenServer process
I have a gen server spawned by simple one for one supervisor, and when I return {:stop, {:shutdown, reason}, state} process remains alive, even though terminate/2 callback is called. What am I doing wrong? (if instead of returning :stop tuple I call Supervisor.terminate_child(MySupervisor, self()) process terminates as expected. How do I stop it, and what is the right way?
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idi527
Does it actually remain alive (same pid), or does it get restarted?
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dom
It doesn’t keep state, but it uses the same start function and arguments, so if your initialization is deterministic the process will end up in the same state.
For a simple_one_for_one supervisor, the child specification defined in Module:init/1 is used, and ChildSpec must instead be an arbitrary list of terms List. The child process is then started by appending List to the existing start function arguments, that is, by calling apply(M, F, A++List), where {M,F,A} is the start function defined in the child specification.
dom
It’s not possible for a gen_server to go back to loop after terminate is called. Are you really sure terminate was called, and the process wasn’t restarted?
NobbZ
How was the child initialised? What’s it restart value? Permanent, temporary or transient?
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