Path: utzoo!attcan!uunet!husc6!uwvax!oddjob!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.wizards
Subject: Re: struct timeval for Sys V Rel 3.0 ?
Message-ID: <11482@mimsy.UUCP>
Date: 13 May 88 18:38:57 GMT
References: <14203@brl-adm.ARPA> <7871@brl-smoke.ARPA> <18806@watmath.waterloo.edu>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 13

In article <18806@watmath.waterloo.edu> egisin@watmath.waterloo.edu
(Eric Gisin) writes:
>On Vaxen running BSD gettimeofday reads a hardware clock register
>with microsecond accuracy.

Only in 4.3BSD and later (4.2BSD just gave back 10 ms. increments), and
only where the hardware supports it.  The routine `microtime' in
/sys/machine/machdep.c is responsible for determining a more accurate
time.  On most Vaxen this is indeed done this way, but the MicroVax II
does not have the register.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris