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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada The Best Language?
Date: Wed, 25 Jul 2001 22:39:09 +0200
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Date: 2001-07-25T22:39:09+02:00
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"Warren W. Gay VE3WWG" <ve3wwg@home.com> writes:

>> OTOH, I havent seen a proper thick binding for select() and poll()
>> (using protected objects, so that you can use Ada select to wait for
>> events). With a thin binding, SUSv2 select() and Ada select do not mix
>> at all.
> 
> I think you'll find that poll(2) can be interfaced to from Ada without
> much trouble.

If you call poll(), your task blocks.  This is not always desirable;
for example, sometimes you want to respond to entry calls even if
you're waiting on some file descriptor.