Functions like BuildDisplayListForStackingContext or BuildDisplayListForChild look
up EffectSet property several times in callees, such as IsTransformed() or
HasOpacity(), which is time wasting.
We should look up EffectSet just once, and pass the found one to all callees
that need it.
MozReview-Commit-ID: GZywm2UcpU7
FRAME_STATE_BIT of nsFrame and nsINode::mBoolFlags are both full, we need to
find another place to hold MAY_HAVE_OPACITY information.
nsINode::mSlots might be a choice, but since we always use this information in
painting, memory footprint of nsINode will become larger after this change.
So I decide to put this information right in EffectSet. The drawback of storing
this information in EffectSet is, although unnecessary Effect look-up is
prevented, we still need EffectSet property look-up in each time
HasOpacityInternal call, so we need Part 2.
Conceptually, Part 1 and Part 2 are independent.
MozReview-Commit-ID: 6sfBFSHjxQb
If the percentage basis isn't provided it will be calculated from the ancestors
as before. Note that that algorithm is only valid if the frame's containing
block is the ancestor's content box, which isn't the case for grid items.
So grid layout MUST provide a percentage basis, although the given value may
be NS_UNCONSTRAINEDSIZE for either axis if the value is indefinite.
MozReview-Commit-ID: 7nvAuR43xfM
Currently the profiler mostly uses an array of strings to represent which
features are available and in use. This patch changes the profiler core to use
a uint32_t bitfield, which is a much simpler and faster representation.
(nsProfiler and the profiler add-on still use the array of strings, alas.) The
new ProfilerFeature type defines the values in the bitfield.
One side-effect of this change is that profiler_feature_active() now can be
used to query all features. Previously it was just a subset.
Another side-effect is that profiler_get_available_features() no longer incorrectly
indicates support for Java and stack-walking when they aren't supported. (The
handling of task tracer support is unchanged, because the old code handled it
correctly.)
We will obsolete StyleAnimationValue in the future, and can treat
AnimationValue as a wrapper of RawServoAnimationValue to hide the FFIs
at that moment. For now, we still need both types, so it's better to make sure
they are mutually exclusive in AnimationValue. Therefore, let's add some
assertions.
Besides, I think those FFIs might do many things and it seems those methods
are not critical, so let's move them into the cpp file, so we can remove
some dependencies to avoid re-compiling so many files if someone needs
revise ServoBindings.h.
MozReview-Commit-ID: FJ1uTvEQ7NT
For Android we want to be able to set a global zoom factor that will scale any page where font inflation is not turned on.
Android makes the system font scale available as a float factor. For our purposes, converting this to a percentage based value and rounding to an integer is accurate enough and enables us to pass this value as a standard Gecko int preference. This means we can make use of the standard infrastructure for setting and retrieving Gecko-side preferences both from Java and JS (the latter during testing), as opposed to having to write custom JNI and C++/IDL helper functions.
To that effect, we implement a method for retrieving that setting via nsLayoutUtils, analogous to the current font inflation settings. Since we later want to clamp the effective text zoom resulting from that setting by zoom.minPercent and maxPercent, we add var caches for them in nsLayoutUtils as well.
MozReview-Commit-ID: Ler2YmwzImE
It's a very general mechanism for replacing the implementation of
printf_stderr().
It's primarily used by the profiler, sparingly, and not in an important way.
Worse, it prevents us from using MOZ_LOG in the profiler, which is something I
want. Because if any code that locks gPSMutex also calls MOZ_LOG, that then
calls printf_stderr(), which calls profiler_log(), which locks gPSMutex, which
deadlocks.
The only other use of set_stderr_callback() is for the ultra-hacky,
for-local-use-only copy_stderr_to_file() function, which was added for B2G
debugging and is no longer necessary.
This patch removes set_stderr_callback() altogether.
