[PATCH] Remove static MAXSCREENS limit from Xext/shm.c.
keithp at keithp.com
Thu Oct 1 15:08:22 PDT 2009
Excerpts from Jamey Sharp's message of Wed Sep 30 22:29:39 -0700 2009:
> Somebody at XDC today said that getting rid of the static MAXSCREENS
> limit from the X server would be a Good Thing, and it looked like doing
> that to Xext/shm.c would be pretty easy, so I tried it.
Thanks for giving this a try. The canonical way to do this is to
allocate a screen private index and then allocate memory per-screen
instead of globally, but your patch is simpler and easier to review.
Check out mi/misprite.c and see the pattern of the form:
static int miSpriteScreenKeyIndex;
static DevPrivateKey miSpriteScreenKey = &miSpriteScreenKeyIndex;
pScreenPriv = xalloc (sizeof (miSpriteScreenRec));
dixSetPrivate(&pScreen->devPrivates, miSpriteScreenKey, pScreenPriv);
Then, functions which need per-screen info do:
pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
You then wrap CloseScreen (in the usual way) and free your private
keith.packard at intel.com
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