[Windows] Dynamic fd_set
in CFSocket
#4969
Open
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This makes
fd_set
on Windows growable by adding additional space to the storing buffer, which effectively extendsfd_set.fd_array
capacity.With this change fixed
FD_SETSIZE 1024
becomes unnecessarily large (every suchfd_set
takes more than 8Kb of memory), so it seems reasonable to reduce it to lower value. I guess128
will do (which is twice as big as default64
).Also, I removed some unused defines left from old bit-field implementation and tossed local vars in
__CFSocketManager
function to make them available according to their usage per platform.Follow-up for #4954. Resolves #4958.