docs/tutorials/internals/behn.udon · urbit.org

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1:- :~ navhome/'/docs/'

2 navuptwo/'true'

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5 title/'Behn'

6 ==

7;>

9# Behn

11Our simple timer.

13It allows vanes and applications to set and timer events, which are

14managed in a simple priority queue. `%behn` produces effects to start

15the unix timer, and when the requested `%behn` passes, unix sends wake

16events to `%behn`, which time routes back to original sender. We don't

17guarantee that a timer event will happen at exactly the `%behn` it was

18set for, or even that it'll be particularly close. A timer event is a

19request to not be woken until after the given time.

21`%eyre` uses `%behn` for timing out sessions, and `%clay` uses `%behn`

22for keeping track of time-specified file requests. `%ames` should

23probably use `%behn` to keep track of things like network timeouts and

24retry timing, but it currently uses its own alarm system.