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Re: Signals, messages and exceptions

From: Igor Khavkine
Subject: Re: Signals, messages and exceptions
Date: Sat, 7 Jul 2001 20:17:22 -0400
User-agent: Mutt/1.3.18i

On Sat, Jul 07, 2001 at 05:40:03PM -0400, Roland McGrath wrote:
> Yes, sorry for the short response.  That was before the coffee.
> I don't really know how to answer your message, since it wasn't quite clear
> what the question was.  Were you suggesting that Hurd signals should work
> by sending exception_raise messages to task or thread exception ports?

Yes, that is what I was getting at. Signals and interrupts are
a very old concept, and I've always thought that exceptions are
a more evolved version of the same concept. So it would make
sense to use a more versatile feature to implement a less versatile
one, if they are of similar nature.

You suggested, that I was confused about the purpose of exceptions
in Mach. Maybe I am, what is your take on this topic?


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