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Re: [PATCH] Add current-suspendable-io-status parameter

From: Nala Ginrut
Subject: Re: [PATCH] Add current-suspendable-io-status parameter
Date: Wed, 15 May 2019 19:25:37 +0800

hi Tomas!
For Guile, if you enabled suspendable-port, you may schedule the
blocking task captured by delimited continuation.
And use I/O multiplex mechanism (say, select or epoll) for monitoring
the file descriptor (or port).
If there's no available byte at all, then you would never be mentioned
by I/O multiplexer.
That is to say, you can do other works before it mentions you some time.

On Wed, May 15, 2019 at 6:09 PM <address@hidden> wrote:
> On Mon, May 13, 2019 at 06:54:38PM +0800, Nala Ginrut wrote:
> > Hi folks!
> > Here's a patch to add current-suspendable-io-status:
> > Its result is a pair: (finished-bytes . rest-bytes)
> Sorry for this possibly dumb question, but... is there a way
> to be non-blocking even if there are no readable/writable
> bytes at all? Or would one have to do multi-threading (and
> let the single threads [1] block) for that?
> Thanks
> [1] not necessarily "operating system" threads
> -- tomás

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