180) Why doesn't the shared-memory extension appear to work?


Using the MIT shared-memory extension (MIT-SHM) is a fine way to speed up
manipulation and display of images. But be aware that XShmQueryExtension(dpy)
returns only information on whether or not the server to which your program
is connected is capable of supporting the shared-memory extension -- it
doesn't confirm that your application is running on the same machine on which
you are running that server. The client and server have to be on the same
machine to be able to use shared memory.

Current documentation is available via
ftp://ftp.x.org/pub/R6untarred/xc/doc/specs/Xext/mit-shm.ms .

[thanks to Kaleb Keithley (kaleb@x.org); 3/95]

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Last Update October 22 2009 @ 05:36 AM