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Date: Wed, 13 Jan 1999 14:53:08 +0100
From: Thomas Sailer <sailer@ife.ee.ethz.ch>
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To: Thomas Hudson <thudson@cygnus.com>
CC: alsa-devel@alsa.jcu.cz, linux-audio-dev@ginette.musique.umontreal.ca
Subject: Re: [linux-audio-dev] Re: Linux scheduler issues.
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Thomas Hudson wrote:

> This is interesting. I read this book when it first came
> out. At that time I don't believe much of the standard
> had been implemented in the Linux kernel. How much is
> implemented now?

Memory locking, Scheduling and RT signals is in the main kernel.
Eric Biedermann is working on and has patches
for POSIX shared memory. AIO is said to be worked on,
but I don't know the state.

> For example, from the book "CLOCK_REALTIME exists on all
> Posix.4 conformant systems...", but I can find no mention

Indeed, it doesn't exist AFAIK. But you may use gettimeofday,
which does much effort to give you the time as accurately
as possible, and on modern PC's (read Pentium) its resolution
is a couple of microseconds.

Tom

