a48dadc98a
This would let you do a constant-time context lookup, but if that's your performance problem you have two problems. Just use the context's XID as the tag value instead. In order to do this, we have to defer destroying a context until it actually goes unreferenced, as you're allowed to mention a context tag after you've (ostensibly) destroyed the context, as long as it's still your current context. Thus, change DestroyContext to merely mark the context as dead if it's a current context, and call down to actual resource destruction (and XID reclamation) in StopUsingContext. Also, stop trying to delete context state from DrawableGone. This was always broken, as GLX does not say that contexts are destroyed when their drawables are destroyed. But with the above change to defer context destruction, this would trigger a server crash on client exit as we'd free the context state twice. Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Adam Jackson <ajax@redhat.com>
X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the
Xorg mailing list:
http://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
http://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
http://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
http://wiki.x.org/wiki/GitPage