Jason Thorpe <thorpej@nas.nasa.gov> writes:

> 
> On Mon, 21 Apr 1997 08:50:33 -0700 
>  Jason Thorpe <thorpej@nas.nasa.gov> wrote:
> 
>  > Erm, doesn't standard X11R6 (and XFree86) use the MIT_SHM specifically
>  > for this purpose?
> 
> ...and to follow up, I think I was confused... On local hosts, a Unix domain
> socket is used for client/server communication, but I don't believe MIT_SHM
> is used for that purpose.

MIT_SHM is specifically for creating an image or pixmap buffer that's
shared between the server and client processes.  It's useful mainly
for double buffering in things like xanim.  See the documentation for
XShm*() for more info.