Subject: [PATCH] fix some performance gaps in Xace
The XaceHook function is used in several hotpaths.
The problem with it (performance wise) is twofold:
* The XaceHook function has a big switch() statement for the hook number in it
* The XaceHook function uses varargs to reassemble the final dispatch arguments again
Both are expensive operations... for something that is known at compile time
This patch turns the hotpath XaceHook call into a direct call to avoid
the switch and varargs; this gives me over 10% performance gain
on the x11perf benchmark.
These hints allow an acceleration architecture to optimize allocation of certain
types of pixmaps, such as pixmaps that will serve as backing pixmaps for
redirected windows.
Before you complain, this code hasn't seen material change since at least
X11R6. It certainly does not build with any modern version of Kerberos.
Anybody wanting krb5 auth to their X server should probably be using
GSSAPI instead of internal krb5 API anyway.
The former <X11/extensions/XKBsrv.h> has been pulled into the server now as
include/xkbsrv.h, and the world updated to look for it in the new place,
since it made no sense to define server API in an extension header. Any
further work along this line will need to do similar things with XKBgeom.h
and friends.
Also move LookupDeviceIntRec into the DIX, and add InputOption type, and
NewInputDeviceRequest prototype (DIX requests DDX to add a device). Does not
link without an implemented NIDR.
(Since all use is inside the xserver module, might as well keep the header
in the Xserver module instead of in proto/XExt to allow easier synchronization
of updates.)
Add XSERV_t, TRANS_SERVER, TRANS_REOPEN to quash warnings.
Add #include <dix-config.h> or <xorg-config.h>, as appropriate, to all
source files in the xserver/xorg tree, predicated on defines of
HAVE_{DIX,XORG}_CONFIG_H. Change all Xfont includes to
<X11/fonts/foo.h>.
change "foo.h" to <X11/foo.h> for core headers, e.g. X.h, Xpoll.h;
change "foo.h", "extensions/foo.h" and "X11/foo.h" to
<X11/extensions/foo.h> for extension headers, e.g. Xv.h;
change "foo.[ch]" to <X11/Xtrans/foo.[ch]> for Xtrans files.
xc/programs/Xserver/dix/colormap.c
xc/programs/Xserver/dix/cursor.c
xc/programs/Xserver/dix/devices.c
xc/programs/Xserver/dix/dispatch.c
xc/programs/Xserver/dix/dixfonts.c
xc/programs/Xserver/dix/dixutils.c
xc/programs/Xserver/dix/events.c
xc/programs/Xserver/dix/extension.c
xc/programs/Xserver/dix/gc.c
xc/programs/Xserver/dix/glyphcurs.c
xc/programs/Xserver/dix/grabs.c
xc/programs/Xserver/dix/main.c
xc/programs/Xserver/dix/pixmap.c
xc/programs/Xserver/dix/privates.c
xc/programs/Xserver/dix/property.c
xc/programs/Xserver/dix/resource.c
xc/programs/Xserver/dix/swaprep.c
xc/programs/Xserver/dix/swapreq.c
//bugs.freedesktop.org/show_bug.cgi?id=2560) attachment #2037
(https://bugs.freedesktop.org/attachment.cgi?id=2037) ANSI-fy
Xserver/dix code. The conversion preserves the comments which annotate
variables. These have been moved into doxygen(esque?) "stubs" above
each function. Patch by Mike Owens <etc@filespanker.com>.
