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From: D0430@PUCC.BITNET (Paul Lansky)
Newsgroups: net.unix-wizards
Subject: DELAY
Message-ID: <1163@PUCC.BITNET>
Date: Tue, 7-Oct-86 09:46:33 EDT
Article-I.D.: PUCC.1163
Posted: Tue Oct  7 09:46:33 1986
Date-Received: Wed, 8-Oct-86 00:47:50 EDT
Reply-To: D0430@PUCC.BITNET
Organization: Princeton University Computing Center, Princeton, New Jersey
Lines: 19

howdy,
 
I'd like to express many thanks for the dozen or so answers I've gotten
to my DELAY query.  They all suggest using timeout/sleep in some combination
or subterfuge.  I've implemented this and it seems to work beautifully.
The most economical and straightforward suggestion came from Jim Lowe
who suggested the following (similar to what happens in the uda.c and
tmscp.c drivers in Ultrix)
 
    (void)timeout(wakeup, (caddr_t)&tp->t_dev, hz>>1) ;
    (void)sleep((caddr_t)&tp->t_dev, PZERO);
 
 
You all are quite a resource!
 
Paul Lansky
Music Department
Princeton University     {seismo, ucbvax} princeton!winnie!paul
                         bitnet == d0430@pucc