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From: richard@aiai.ed.ac.uk (Richard Tobin)
Newsgroups: comp.sys.mips
Subject: Re: Where is usleep(3)
Message-ID: <2749@skye.ed.ac.uk>
Date: 12 Jun 90 14:49:39 GMT
References: <2588@uakari.primate.wisc.edu> <39291@mips.mips.COM>
Reply-To: richard@aiai.UUCP (Richard Tobin)
Organization: AIAI, University of Edinburgh, Scotland
Lines: 25
X-Local-Date: 12 Jun 90 07:49:39 PDT

>>My M/120 (RISC/os 4.01) has a usleep(3-BSD) man page, but I can't find
>>the function itself in any of the libraries.  Where is it?  Is it a ghost?

>The usleep function was not supplied in 4.0x and derivitives 

For many purposes, this is an adequate replacement:

#include <sys/types.h>
#include <sys/time.h>

void usleep(usecs)
unsigned usecs;
{
    struct timeval to;

    to.tv_usec = usecs % 1000000;
    to.tv_sec = usecs / 1000000;
    select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &to);
}

-- Richard
-- 
Richard Tobin,                       JANET: R.Tobin@uk.ac.ed             
AI Applications Institute,           ARPA:  R.Tobin%uk.ac.ed@nsfnet-relay.ac.uk
Edinburgh University.                UUCP:  ...!ukc!ed.ac.uk!R.Tobin