[zeromq-dev] question about pollers

[Laughing]

Hello every gurus:

    I have a question about pollers.

    pollers have some interfaces such as `add_fd`, `rm_fd`, `set_pollin`, `reset_pollin`, `loop`.  I want to know the thread which they are running. What I know now is that the `loop` is in the thread `io_thread`. And what about others such as `add_fd` and `set_pollin`? I am wander why there is no data lock in `epoller`. How it is guarded?
    I will appreciate for your reponse. 

    Thanks very much.






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