ref: a920c765f2b4130590fb5971a50690b21664957a
dir: /module/timers.m/
Timers: module { PATH: con "/dis/lib/timers.dis"; Sec: con 1000; Timer: adt { dt: int; timeout: chan of int; start: fn(msec: int): ref Timer; stop: fn(t: self ref Timer); }; init: fn(gran: int): int; shutdown: fn(); };