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SubjectRe: Thread implementations...
FromUlrich Drepper <>
Date25 Jun 1998 20:56:34 -0700
"Stephen C. Tweedie" <sct@dcs.ed.ac.uk> writes:

> posix.1b signals are standard; SIGIO is standard; combining the two
> is an obvious way to implement completion queues with a minimum of
> non-standardness.  It's not _completely_ standard, but I don't see
> any fully standard and scalable interface alternatives right now.

It's not a non-standard solution.  POSIX.1b explicitly leaves it
undefined whether the "normal" signals can be used with the RT signal
functions or not.  So a solution based on SIGIO+RT sigs is allowed by
the standard, it might just be not portable.

-- 
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