1.\" $OpenBSD: delay.9,v 1.5 2019/06/27 18:11:53 cheloha Exp $ 2.\" 3.\" Copyright (c) 2006 David Gwynne <dlg@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: June 27 2019 $ 18.Dt DELAY 9 19.Os 20.Sh NAME 21.Nm delay 22.Nd busy-wait for an interval 23.Sh SYNOPSIS 24.In sys/param.h 25.Ft void 26.Fn delay "int interval" 27.Sh DESCRIPTION 28The 29.Fn delay 30function busy-waits for at least 31.Fa interval 32microseconds. 33.Sh SEE ALSO 34.Xr timeout 9 , 35.Xr tsleep 9 36