Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: faeb8e9159788867f142074876979f39af8ebeb0
https://github.com/WebKit/WebKit/commit/faeb8e9159788867f142074876979f39af8ebeb0
Author: Yusuke Suzuki <[email protected]>
Date: 2024-04-19 (Fri, 19 Apr 2024)
Changed paths:
M Source/WebCore/layout/formattingContexts/inline/AbstractLineBuilder.cpp
M Source/WebCore/layout/formattingContexts/inline/AbstractLineBuilder.h
Log Message:
-----------
[WebCore] AbstractLineBuilder::m_wrapOpportunityList should have
inlineCapacity coverting most of cases
https://bugs.webkit.org/show_bug.cgi?id=272966
rdar://126741662
Reviewed by Alan Baradlay.
We found that AbstractLineBuilder::m_wrapOpportunityList is causing frequent
malloc and free in the hot path.
This patch adds 32 inlineCapacity and uses `shrink(0)` to keep once-allocated
capacity during LineBuilder's lifetime.
This 32 number gets picked from data collection in existing benchmarks.
* Source/WebCore/layout/formattingContexts/inline/AbstractLineBuilder.cpp:
(WebCore::Layout::AbstractLineBuilder::reset):
* Source/WebCore/layout/formattingContexts/inline/AbstractLineBuilder.h:
Canonical link: https://commits.webkit.org/277744@main
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