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From: ron@men1.UUCP (Ron Flax)
Newsgroups: net.bugs.uucp
Subject: Re: 4.2 uucp performance problems?
Message-ID: <374@men1.UUCP>
Date: Fri, 15-Feb-85 15:14:21 EST
Article-I.D.: men1.374
Posted: Fri Feb 15 15:14:21 1985
Date-Received: Mon, 18-Feb-85 06:29:50 EST
References: <1363@hao.UUCP> <13500001@uicsl.UUCP> <442@down.FUN>
Organization: MTACCS Engineering Network, Arlington VA
Lines: 40


>> Is it possible to get the "nap()" call code?
>> We cannot do sub-second sleeps.
>> 
>> Or is this V5 stuff ??
>> Or is this 4.2bsd buried somewhere??
>> 
>> 				b.c.mather
>> 				uiucdcs!uicsl!mather
>
> /* "sleep" for n clock ticks */
> #include <sys/time.h>
> nap(n)
> {
> 	struct timeval t;
> 
> 	if (n <= 0 || n > 3000)
> 		return;	/* unreasonable */
> 	t.tv_sec = n / 60;
> 	t.tv_usec = ((n % 60) * 1000000) / 60;
> 	(void) select(32, 0, 0, 0, &t);
> }
> 
> this assumes a 60 hz clock.  your mileage may vary.
> 
> 	peter

[ Replace this MUNGE with your MUNGE ]

Peter I think you forgot something??

This code is great if you happen to have the 'select' system call...

...which I believe is a 4.2bsd system call.

Ron@men1	(Ron Flax)
MTACCS Engineering Network
..!{seismo,umcp-cs}!{prometh,cal-unix}!men1!ron

     "The opinions expressed herein are mine only if you agree with them."