Sleeping less than a second in OCaml

Question

The Unix.sleep function can suspend the program for whole seconds, but how can you suspend it for less than a second?

Jeffrey Scofield · Accepted Answer · 2012-05-28T19:46:41.643

14

The classical Unix solution for this is to use select() with no file descriptors:

let minisleep (sec: float) =
    ignore (Unix.select [] [] [] sec)

edited May 28 '12 at 19:46

answered May 28 '12 at 19:39

Jeffrey Scofield

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and don't forget about signals that may interrupt select – ygrek May 29 '12 at 07:02

score 13 · Answer 2 · answered May 28 '12 at 19:31

13

The Thread.delay function pauses the thread for the given number of seconds, but it takes a float, allowing you to pause the thread for less than a second.

answered May 28 '12 at 19:31

Matthew Piziak

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score 13 · Answer 3 · answered Jun 18 '16 at 03:47

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from Unix module

val sleepf : float -> unit

Stop execution for the given number of seconds. Like sleep, but fractions of seconds are supported.

answered Jun 18 '16 at 03:47

Valentyn Zakharenko

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Note that this function was added in 4.03.0. Prior versions of OCaml don't have access to this particular function. – hcarty Aug 27 '16 at 21:09

Sleeping less than a second in OCaml

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