Re: Thread implementations...

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sun, 21 Jun 1998 17:57:04 +0100 (BST)

> On Sun, 21 Jun 1998, John Kodis wrote:
>
> > status = sys$qio(
> > READ_OPCODE, fd, buffer, sizeof(buffer),
> > get called with the ast_parameter in the context of the process that
> > posted the QIO. This provided a powerful and easy-to-use method of
> > dealing with async IO. It's one of the few VMS features that I wish
> > Unix supported.

This kind of asynchronous I/O is defined in the Posix RT specification
and should all be in glibc 2.1.x at some point (the 2.1.x kernel has
real time signals - which queue and contain one byte of data - the
C library can do the rest with clone() and signal handlers).

> Yep, this was very cool. I used it for great effect in a MUD game I wrote
> on VAX/VMS 5.1 yonks ago at university.

VaxMUD ?

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