Profiling indicates a significant amount of time is spent during displaylist building accessing style information in order to detect border radii. This is a cost that for frames with no border radii only needs to be paid when the style changes.
Since nsIFrame still has 16 bits available for storing data without growing it in size, this patch recomputes whether there are border radii upon DidGetStyleContext and stores that information in one of these unused bits.
MozReview-Commit-ID: 4Jm29qUwXq3
In the nsWindowMemoryReporter.cpp / nsArenaMemoryStats.h I'm only
including the concrete frame classes now - we obviously never have
instances of the other IDs so there's no need to collect stats for them.
MozReview-Commit-ID: 48uFCZ3xKBC
nsIFrame::mClass is of type enum class nsQueryFrame::ClassID which is
a strict subset of the nsQueryFrame::FrameIID values. For a concrete
frame class, its FrameIID is the same numeric value as its ClassID.
MozReview-Commit-ID: 1N0AkCGo1ol
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
This restores the code to what it was doing prior to bug 1360241 (where
the else to add to mWildRules was an else of a test of fType), but then
removes the unnecesary null-check on the result of GetFrameTypeInfo.
MozReview-Commit-ID: EOPumJoKrIs
This protects all accesses to the frame property table with a bit stored
on the frame. This means we avoid hashtable operations when asking
about frame properties on frames that have no properties.
The changes to RestyleManager, and the new HasSkippingBitCheck API, are
needed because RestyleManager depended on being able to ask for
properties on a deleted frame (knowing that the property in question
could not have been set on any new frames since the deleted frame was
destroyed), in order to use the destruction of the properties that
happens at frame destruction as a mechanism for learning that the frame
was destroyed. The changes there preserve the use of that mechanism,
although it becomes a bit uglier. The ugliness is well-deserved.
MozReview-Commit-ID: BScmDUlWq65
This makes it so that, given a |const nsIFrame*|, a caller can retrieve
properties but not set or remove them, but with an |nsIFrame*| all
operations are allowed. I believe this is sensible since properties act
as extended member variables for things that are needed rarely, and
these are the const-ness semantics of member variables.
This also avoids the need for const_cast<nsIFrame*> to cast away const
in the following patch, which guards property access with a frame state
bit.
MozReview-Commit-ID: IJ9JnGzdH51
This replaces the usage of |PR_LogPrint| with either |printf_stderr| or
|MOZ_LOG| where appropriate. |printf_stderr| is used where a logger is not
actually available or if log levels are not being used as expected.
This makes it so that, given a |const nsIFrame*|, a caller can retrieve
properties but not set or remove them, but with an |nsIFrame*| all
operations are allowed. I believe this is sensible since properties act
as extended member variables for things that are needed rarely, and
these are the const-ness semantics of member variables.
This also avoids the need for const_cast<nsIFrame*> to cast away const
in the following patch, which guards property access with a frame state
bit.
MozReview-Commit-ID: IJ9JnGzdH51
We used post-transformed overflow area frame when checking that target frame is out of view.
In this process, we will transform again. So we should use original frame's rectangle(i.e.
we should use pre-transformed over flow area's rectangle).
MozReview-Commit-ID: 9mapuFNjSQc
