On Thu, Jan 6, 2011 at 5:49 AM, Robert Story <[email protected]> wrote:
> On Tue, 04 Jan 2011 23:07:16 +0100 Magnus wrote:
> MF> What is the correct semantics of a copy of a transport?
> MF>
> MF> What happens if I close the copy? The original?
>
> Good point. One of them will be left with a file descriptor that is no
> longer
> valid. If some other tranport then opens a socket, they could get the same
> one
> and mayhem could ensue.
>
> Maybe a safer thing to do would be to not copy the socket fd, but set it to
> -1
> on the copy. If a particular transport really wants it, they can copy it in
> their f_copy function.
>
Hello Robert,
Are the original transport data structure and its copy modified
independently of each other - if these are ever modified ? If not, a
possible alternative is to use reference counting instead of copying.
Bart.
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