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From: Kaz Kylheku <643-408-1753@kylheku.com>
Newsgroups: comp.lang.c
Subject: Re: C90 fpeek
Date: Sat, 25 Jan 2025 00:52:14 -0000 (UTC)
Organization: A noiseless patient Spider
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On 2025-01-24, Chris M. Thomasson <chris.m.thomasson.1@gmail.com> wrote:
> On 1/24/2025 11:48 AM, Kaz Kylheku wrote:
>> Unless you non-portably arranged otherwise. E.g. on POSIX
>> we can get the fileno(stream), and use fcntl to set up O_NONBLOCK.
>> Then get(stream) returns EOF, with errno set to EWOULDBLOCK
>> and we whave to clearerr(stream), then poll the fd, and so it goes.
>> 
>> Been there done that. Went back there, done that again,
>> and then several more times, like a raging masochist.
>
> Why not use AIO?

In conjunction with stdio buffering? It doesn't seem possible; you have
to go through alternative functions like aio_read, which stdio doesn't
interface with.

A stdio implementation that uses aio_read and friends under the hood
might be interesting.

-- 
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal
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