[Libguestfs] [PATCH libnbd v4] Add Go language bindings (golang) (RHBZ#1814538).

[Daniel P. Berrangé]

On Wed, Mar 25, 2020 at 10:01:02AM +0000, Richard W.M. Jones wrote:
> On Wed, Mar 25, 2020 at 09:48:02AM +0000, Daniel P. Berrangé wrote:
> > On Wed, Mar 25, 2020 at 09:42:19AM +0000, Richard W.M. Jones wrote:
> > > Now runs a complete set of tests, notably including the AIO test.
> > > 
> > > File descriptors are passed in and out as plain ints (instead of
> > > *os.File) for a couple of reasons: (1) We have to pass the plain int
> > > to syscall.Select.  (2) Turning an fd into an os.File causes golang to
> > > set the blocking flag which is deeply unhelpful.
> > 
> > FWIW, using non-blocking FDs and syscall.Select is not normal best
> > practice for Go, where the expected model would be to use goroutines
> > with the file in blocking mode.
> 
> Right, however I couldn't find any documentation about how to
> integrate a C library with that mechanism.  Does libvirt-go do
> anything like this?

What's the intended usage of the FD ?  I was thinking it was just for
doing plain read/write I/O from Go, but now I'm thinking this was wrong
interpretation 


Regards,
Daniel
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