[libvirt] [PATCH] fix WIN64 compatibility bug in external EventImpl API

[Daniel P. Berrange]

On Wed, Nov 19, 2008 at 11:41:43AM -0500, David Lively wrote:
> While starting to think about Windows compability, I realized the newly
> exposed API for registering an external EventImpl is not adequate.
> Currently it's assuming 32-bit unix fds.  But Windows uses a pointer
> (HANDLE) here.  So we need to generalize this interface so it can be
> implemented for 64-bit Windows.  The attached patch does this.  (I'm
> sure it conflicts with work Dan B is doing, so I'm hoping he'll just
> incorporate this into his changes.)

I'm not sure whether this is actually required. We're using gnulib for
socket stuff, and that wraps the Winsock socket() call so that it returns
a real file descriptor rather than a socket handle. It does this calling
_open_osfhandle which appears to be declared to accept a 'long' and return
an 'int' - at least in MinGW headers.

MinGW  doesn't implement Win64 though, so its possible the header isn't
quite right. If you have a Win64 box available, could you post what you
see as the declarations for

_open_osfhandle
_get_osfhandle


Regards,
Daniel
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