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From: keith@telesoft.UUCP (Keith Shillington @lizard)
Newsgroups: comp.lang.ada
Subject: Re: Ada on Unix
Message-ID: <8910032225.AA03213@ucsd.edu>
Date: 3 Oct 89 17:27:23 GMT
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Dave Emery asks:

> Does this mean that Telesoft supports non-blocking IO from multiple
> tasks doing IO in a single Unix process?  (i.e.  if one task calls
> text_io.put_line, will other tasks in the same program/process still
> run?)

Not exactly.  What we support is treating I/O as a scheduling action.
This requires explicit action from the programmer to cause it to happen.
It is not preemptive.  It is not automatic.  It does allow one task to
wait for a completion of an input or output to a terminal, while other
tasks continue to process.  I believe this is implemented using a
'fork'.

I want to tread lightly here, as I am sensitive to the non-proprietary
nature of this medium.  If you want more information; let us continue
this conversation via mail.

Keith Shillington, TeleSoft Customer Support