[PATCH] Raise the number of FD on WIN32/CYGWIN as well

[Olivier Fourdan]

Hi Jon,

> The value of FD_SETSIZE for those targets in xserver's configure.ac:403
> probably needs to be increased to match (See the comment on xserver
> commit ed2c2a68)

Yeah, well, I changed that already to 512 in commit d206c240 for consistency (in doubt, I tried to keep consistent).

> (The default value of FD_SETSIZE for those targets is only 64)
> 
> I'm somewhat sceptical that things work well with >64 clients on those
> targets, but that's a different issue.

I tried to search for this on ze interweb and found a few references (e.g. [1] [2]) that seem to indicate that, even if the default value is 64, it's possible to increase that limit. But other than that, I'll easily admit being quite clueless about Windows.

That said, if the value for FD_SETSIZE from Xpoll.h in x11proto is of no use (if I understand correctly), we might as well remove it completely from Xpoll.h. But I suspect we'd rather keep things consistent, at least between the X server and x11proto, even if the X server code doesn't seem to make use of XFD_SETSIZE when WIN32 is set.

Cheers,
Olivier

[1] http://stackoverflow.com/questions/7976388/increasing-limit-of-fd-setsize-and-select
[2] https://support.microsoft.com/en-gb/kb/111855