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    SubjectRe: The GGI and EvStack debate -- Linus and such persons please reard.
    On Fri, 27 Mar 1998, Theodore Y. Ts'o wrote:

    > Date: Thu, 26 Mar 1998 09:44:47 -0800 (PST)
    > From: "Jon M. Taylor" <>
    > I like the EvStack concept of consoles consisting of a series of
    > pluggable event handler/router modules. I like the idea of the kernel
    > having a generic, flexible and fast way to pass abstract messages between
    > itself and userspace. And I like the idea that any console IO device, no
    > matter how wierd, can have all its capabilities encapsulated into a set of
    > abstracted messages.
    > That last is very important for graphics hardware, where the
    > feature set that can be exported by the kernel to userspace varies widely
    > from card to card. But the same message-based paradigm can allow any sort
    > of odd device to be easily supported by Linux - just write a kernel driver
    > that wraps a thin message layer over the raw hardware functionality and
    > let the userspace stacks contain the logic the glues the devices together
    > into a "console".
    > Fast? Generic? Message passing?
    > I take it you're not familiar with that performance abomination known as
    > System V Streams --- beloved by the formal computer science types for
    > being clean --- and cursed by those who wanted a fast and efficient
    > network stack.

    Indeed I am not. All I know about STREAMS is that everyone seems
    to loathe it and that for some reason EvStack strikes people as being
    very similar. What was it about STREAMS that was bad?


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