Re: [Chicken-hackers] [PATCH] Avoid context switch during TCP errno reporting

[Felix]

From: Peter Bex <address@hidden>
Subject: Re: [Chicken-hackers] [PATCH] Avoid context switch during TCP errno 
reporting
Date: Wed, 27 Mar 2013 22:34:46 +0100

> On Wed, Mar 27, 2013 at 10:18:48PM +0100, Peter Bex wrote:
>> On Tue, Mar 26, 2013 at 08:30:23PM -0400, John Cowan wrote:
>> > > However, posixwindows doesn't have an implementation for file-select
>> > > at all, while select() certainly is available on Windows (the scheduler
>> > > uses it too, after all!).
>> > 
>> > IIRC, the trouble with select() on Windows is that it has nothing to say
>> > about fds that are associated with non-sockets, and indeed Cygwin jumps
>> > through enormous hoops to make its use seamless.
>> 
>> Thanks for the heads up, I wasn't able to find any info on this.
>> This means the bit where I moved some stuff into C_check_fd_ready() is
>> not going to work, and still requires duplication in tcp.scm
> 
> Actually, scratch that.  Unless this means that the current
> implementation of the scheduler is broken on Windows in the first place?
> It uses select() for all FDs that any thread is blocked on for I/O,
> not just sockets.
> 

That's fine. There is no one to implement the full solution anyway,
which would mean, digging into the win32 API.


cheers,
felix