Clocks, time, sleeping and timeouts.
class virtual 'a clock_base : object ... endclass virtual clock : object ... endval now : clock -> floatnow t is the current time since 00:00:00 GMT, Jan. 1, 1970 - in seconds - according to t.
val sleep_until : clock -> float -> unitsleep_until t time waits until the given time is reached.
val sleep : clock -> float -> unitsleep t d waits for d seconds.
module Mono : sig ... endMonotonic clocks.
with_timeout clock d fn runs fn () but cancels it after d seconds.
val with_timeout_exn : clock -> float -> (unit -> 'a) -> 'awith_timeout_exn clock d fn runs fn () but cancels it after d seconds, raising exception Timeout.
module Timeout : sig ... endTimeout values.