Only key difference that calloc(), in contrast to rellocarray(),
is zero-initializing. The overhead is hard to measure on today's
machines, and it's safer programming practise to always allocate
zero-initialized, so one can't forget to do it explicitly.
Cocci rule:
@@
expression COUNT;
expression LEN;
@@
- xallocarray(COUNT,LEN)
+ calloc(COUNT,LEN)
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
* use their actual path instead of relying this to be in compiler's
include path list.
* no need to do it only conditionally, no #ifdef needed
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
All relevant things are now in dix/colormap_priv.h, so no need
to include colormapst.h anymore.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
No need for using a complex callback machinery, if we just move the
little pieces of byte-swapping directly into the request handler.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
No need for using a complex callback machinery, if we just move the
little pieces of byte-swapping directly into the request handler.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
No need for using a complex callback machinery, if we just move the
little pieces of byte-swapping directly into the request handler.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Using calloc() instead of malloc() as preventive measure, so there
never can be any hidden bugs or leaks due uninitialized memory.
The extra cost of using this compiler intrinsic should be practically
impossible to measure - in many cases a good compiler can even deduce
if certain areas really don't need to be zero'd (because they're written
to right after allocation) and create more efficient machine code.
The code pathes in question are pretty cold anyways, so it's probably
not worth even thinking about potential extra runtime costs.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Even though risk of being actually hit is minimal, better having some extra
safety checks instead of segfaulting, just in case.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
| ../Xext/panoramiXprocs.c: In function ‘PanoramiXCopyArea’:
| ../Xext/panoramiXprocs.c:1152:13: warning: use of uninitialized value ‘pGC’ [CWE-457] [-Wanalyzer-use-of-uninitialized-value]
| 1152 | if (pGC && pGC->graphicsExposures) {
| | ^~~
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
FOR_NSCREENS() is just alias for FOR_NSCREENS_BACKWARD(). In many cases
it really matters that we're going backwards and the last iteration visited
the screen #0, and that one is panoramix-wrapped.
Thus directly calling FOR_NSCREENS_BACKWARD() here and dropping the alias.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
The symbol controls whether to include dix-config.h, and it's always set,
thus we don't need it (and dozens of ifdef's) anymore.
This commit only removes them from our own source files, where we can
guarantee that dix-config.h is present - leaving the (potentially exported)
headers untouched.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Since we already had to rename some of them, in order to fix name clashes
on win32, it's now time to rename all the remaining ones.
The old ones are still present as define's to the new ones, just for
backwards compatibility.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1355>
This ensures that any prep work for the drawable we're about to read
from is already done before we call down to GetImage. This should be no
functional change as most of the callers with a non-trivial
SourceValidate are already wrapping GetImage and doing the equivalent
thing, but we'll be simplifying that shortly.
More importantly this ensures that if any of that prep work would
generate events - like automatic compositing flushing rendering to a
parent pixmap which then triggers damage - then it happens entirely
before we start writing the GetImage reply header.
Note that we do not do the same for GetSpans, but that's okay. The only
way to get to GetSpans is through miCopyArea or miCopyPlane - where the
callers must already call SourceValidate - or miGetImage - which this
commit now protects with SourceValidate.
Fixes: xorg/xserver#902
Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
This code is using GetImage to accumulate a logical view of the window
image (since the windows will be clipped to their containing screen),
and then PutImage to load that back into the pixmap. What it wasn't
doing was constructing a region for the obscured areas of the window and
emitting graphics exposures for same.
v2: Fix coordinate translation when the source is the root window
v3: Create sourceBox with the right coordinates initially instead of
translating (Keith Packard)
v4: Clamp the region to 15 bits to avoid overflow (Keith Packard)
Signed-off-by: Adam Jackson <ajax@redhat.com>
-Wlogical-op now tells us:
devices.c:1685:23: warning: logical ‘and’ of equal expressions
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
It's going to multiply anyway, so if we have non-constant values, might
as well let it do the multiplication instead of adding another multiply,
and good versions of calloc will check for & avoid overflow in the process.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
No DDX is overriding this and it's fairly absurd to expose it as a
screen operation anyway.
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
This lets us stop using the 'pointer' typedef in Xdefs.h as 'pointer'
is used throughout the X server for other things, and having duplicate
names generates compiler warnings.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>
Casting return to (void) was used to tell lint that you intended
to ignore the return value, so it didn't warn you about it.
Casting the third argument to (char *) was used as the most generic
pointer type in the days before compilers supported C89 (void *)
(except for a couple places it's used for byte-sized pointer math).
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>
If the typedef wasn't perfect, indent would get confused and change:
foo = (SomePointlessTypedef *) &stuff[1];
to:
foo = (SomePointlessTypedef *) & stuff[1];
Fix this up with a really naïve sed script, plus some hand-editing to
change some false positives in XKB back.
Signed-off-by: Daniel Stone <daniel@fooishbar.org>
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:
-bap
-psl
-T PrivatePtr
-T pmWait
-T _XFUNCPROTOBEGIN
-T _XFUNCPROTOEND
-T _X_EXPORT
The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.
The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.
The comparison was done with this script:
dir1=$1
dir2=$2
for dir in $dir1 $dir2; do
(cd $dir && find . -name '*.o' | while read file; do
dir=`dirname $file`
base=`basename $file .o`
dump=$dir/$base.dump
objdump -d $file > $dump
done)
done
find $dir1 -name '*.dump' | while read dump; do
otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
diff -u $dump $otherdump
done
Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This converts all the remaining 1->num loops to the macro,
this removes nearly all the panoramiXNumScreens usage in
loops, and is a step to replacing it.
v2: move some from the other patch.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This just uses the FOR_NSCREENS macro instead.
v2: remove some of the 1->x loops.
v3: drop the 1->0 loop, will rework later.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This adds a new FOR_NSCREENS_FORWARD_SKIP, which skips the first
element and is a common idiom throughout panoramiX code.
It then adds a new inline function to hide id assignment to a
panoramiX resource and cleans up lots of common repeated code.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
this code appears in quite a few places, consolidate it into
a macro in a header.
v2: align braces with macro just above it, and with
lines removed
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
This fixes a typo introduced in commit
80b5d3a326. The pointer pDst was changed
unintentionally to pWin from a copy/paste error. This resulted in all
QT-based apps and some tcl/tk ones (like fontforge) to crash X 1.9 on
starting up, when Xinerama was enabled.
Bug report: https://bbs.archlinux.org/viewtopic.php?id=106125
Signed-off-by: Elie Bleton <drozofil@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Tested-by: Linus Arver <linusarver@gmail.com>
Using type == DRAWABLE_WINDOW to differentiate between pixmaps and
windows isn't sufficient as input-only windows will end up in the
pixmap case. This patch changes a few more code paths to use
WindowDrawable instead.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
This patch was generated by the following Perl code:
perl -i -pe 's/([^_])return\s*\(\s*([^(]+?)\s*\)s*;(\s+(\n))?/$1return $2;$4/g;'
Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Marcin Baczyński <marbacz@gmail.com>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This is a combination of a huge mechanical patch and a few small
fixups required to finish the job. They were reviewed separately, but
because the server does not build without both pieces, I've merged
them together at this time.
The mechanical changes were performed by running the included
'fix-region' script over the whole tree:
$ git ls-files | grep -v '^fix-' | xargs ./fix-region
And then, the white space errors in the resulting patch were fixed
using the provided fix-patch-whitespace script.
$ sh ./fix-patch-whitespace
Thanks to Jamey Sharp for the mighty fine sed-generating sed script.
The hand-done changes involve removing functions from dix/region.c
that duplicate inline functions in include/regionstr.h, along with
their declarations in regionstr.h, mi.h and mispans.h.
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
This fuses two loops in each function, eliminating an intermediate
MAXSCREENS-sized array from each.
Aside from being more efficient, I believe this is equivalent to the
previous implementation, since
- each per-screen GC has the graphicsExposures flag set the same way,
and
- the REGION_* macros ignore their screen argument.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)
Many references to the dixScreenOrigins array already had the
corresponding screen pointer handy, which meant they usually looked like
"dixScreenOrigins[pScreen->myNum]". Adding a field to ScreenRec instead
of keeping this information in a parallel array simplifies those
expressions, and eliminates a MAXSCREENS-sized array.
Since dix declared the dixScreenOrigins array, I figure allocating a
screen private for these values is overkill.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)
Many references to the WindowTable array already had the corresponding
screen pointer handy, which meant they usually looked like
"WindowTable[pScreen->myNum]". Adding a field to ScreenRec instead of
keeping this information in a parallel array simplifies those
expressions, and eliminates a MAXSCREENS-sized array.
Since dix uses this data, a screen private entry isn't appropriate.
xf86-video-dummy currently uses WindowTable, so it needs to be updated
to reflect this change.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)
Most references to the savedScreenInfo array already had the
corresponding screen pointer handy, which meant they usually looked like
"savedScreenInfo[pScreen->myNum]". Adding a field to ScreenRec instead
of keeping this information in a parallel array simplifies those
expressions, and eliminates a MAXSCREENS-sized array.
Since dix uses this data, a screen private entry isn't appropriate.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com>
Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> (i686 GNU/Linux)
Rather than always returning BadValue, associate an error status like
BadWindow with a resource type like RT_WINDOW, and return the
appropriate one for the requested type.
This patch only touches the core protocol resource types. Others still
return BadValue and need to be mapped appropriately.
dixLookupResourceByType can now return BadImplementation, if the caller
asked for a resource type that has not been allocated in the server.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Just let Dispatch() check for a noClientException, rather than making
every single dispatch procedure take care of it.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
The only remaining X-functions used in server are XNF*, the rest is converted to
plain alloc/calloc/realloc/free/strdup.
X* functions are still exported from server and x* macros are still defined in
header file, so both ABI and API are not affected by this change.
Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
This header doesn't seem to be used outside the server tree, so I don't
think anything was depending on these except what I've fixed in this
patch.
FORCE_ROOT is not used anywhere, and never has been in all the history
that's in git. ajax removed its FORCE_WIN and FORCE_CMAP companions
three years ago, in 04b87d6dfa.
BREAK_IF and IF_RETURN expanded to exactly the keywords in their names,
which is silly. They were rarely used and served only to make callers
inconsistent with the idioms used elsewhere in the server.
Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Enrico Weigelt, metux IT consult
Adam Jackson
Alan Coopersmith
Peter Hutterer
Keith Packard
Daniel Stone
Dave Airlie
Linus Arver
Mikhail Gusarov
Jamey Sharp