Ausam/doc/man/man2/delay.2

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.th DELAY II 5/4/78
.sh NAME
delay \*- delay execution for an interval
.sh SYNOPSIS
(delay = 51.: not in assembler)
.br
(tics in r0)
.br
.bd "sys delay"

.bd "delay(tics)"
.br
.bd "unsigned tics;"
.sh DESCRIPTION
The calling process is suspended from execution for the number
of clock tics specified by the argument.
.s3
Note that the delay is for a guaranteed minimum period,
and that reactivation may be further delayed by swapping.
.sh "SEE ALSO"
lock (II),
sleep (II)
.sh DIAGNOSTICS
If the reactivation is late,
.it Delay
returns a negative value signifying the number of tics
by which the reactivation has been delayed.
This does not include delay due to (\ a possible\ ) swap time.