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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.lang.c
Subject: Re: Python recompile
Date: Fri, 14 Mar 2025 21:20:17 -0000 (UTC)
Organization: A noiseless patient Spider
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On Fri, 14 Mar 2025 12:46:21 -0700, Chris M. Thomasson wrote:

> On 3/13/2025 6:48 PM, Lawrence D'Oliveiro wrote:
>
>> On Thu, 13 Mar 2025 16:45:28 -0700, Chris M. Thomasson wrote:
>> 
>>> I have no idea how the Python dev's use IOCP with sockets.
>> 
>> They can’t figure out a way to support file I/O notifiers (of the kind
>> commonly used with event loops) with it. If you know of a way to do it,
>> please tell us.
> 
> Well, usually, iirc, been a while, when GQCSEX returns we take the
> WSAOVERLAPPED and convert it to our extended structure. Basically
> similar to how Linux uses offsetof to extend node structures, or on
> Windows CONTAINING_RECORD, then we can use that to pass into a function
> called on_read, on_write, on_accept, on_connect, ect... type of
> functions.

Does that require explicitly queuing a read or a write operation?

According to the platform support notes
<https://docs.python.org/3/library/asyncio-platforms.html>, 
ProactorEventLoop does not allow the addition of reader/writer callbacks 
for caller-supplied file descriptors.

Remember what these callbacks do: they notify that the FD will accept a 
read or a write, not that a pending read or write has completed.