Date: Tue, 20 Apr 1999 10:02:44 -0600 From: Wes Peters <wes@softweyr.com> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: gram@cdsec.com, hackers@FreeBSD.ORG Subject: Re: Using select() to implement a delay Message-ID: <371CA524.400D66F8@softweyr.com> References: <199904201316.PAA23736@labinfo.iet.unipi.it>
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Luigi Rizzo wrote:
>
> > > I have an interesting problem. I have a routine to implement delays:
> ...
> > > I am using this both because it gives better resolution than sleep(),
> > > and also because it doesn't require the use of SIGALRM, which I am
> > > using elsewhere.
> >
> > Do you have any reasons not to use usleep(3) or nanosleep(2)?
>
> portability to other unixes...
Non-Posix ones? Do any of those exist anymore? I just checked NetBSD,
Solaris, and Linux, it exists on all of those. Apparently it doesn't
on SunOS 4.1.4, which is odd, since that was 4.3BSD.
I'd still suggest an #ifdef test in the code and use nanosleep where-
ever it is available.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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