[mod.computers.vax] Sharing channels between processes

conrad@UCSF-CGL.ARPA (Conrad Huang) (01/21/86)

Is there any way for a process and a subprocess to share an I/O channel
in VMS?  I have a program which accesses a graphics display (an Evans &
Sutherland PS350) using The Wollongong Group's TCP/IP.  The program is
divided into two parts: one controlling how graphical objects are
manipulated, the other controlling what the objects look like.  Both
processes need to access the graphics display, but the display only
accepts one TCP connection at a time (i.e. I can't just open another
channel to the graphics display in the subprocess).  I already have
the channel to the display established when I start the subprocess;
is there any way I can get the subprocess to "know" about this channel?
Thanks,

Conrad Huang
conrad@ucsf-cgl.arpa

PS	This is for VMS 4.2 on a 780.