Bug 219416

Summary: Simplify some callsites of WheelEventTestMonitor
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: cmarcelo, ews-watchlist, fred.wang, jamesr, luiz, simon.fraser, tonikitoo, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
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Patch dbates: review+

Description Simon Fraser (smfr) 2020-12-01 17:09:09 PST
Simplify some callsites of WheelEventTestMonitor
Comment 1 Simon Fraser (smfr) 2020-12-01 17:12:31 PST
Created attachment 415179 [details]
Patch
Comment 2 Simon Fraser (smfr) 2020-12-01 18:46:45 PST
Created attachment 415186 [details]
Patch
Comment 3 Daniel Bates 2020-12-01 19:00:04 PST
View in context: https://bugs.webkit.org/attachment.cgi?id=415179&action=review

> Source/WebCore/page/scrolling/ThreadedScrollingTree.cpp:161
> +    auto makeDeferrer = [&]() -> WheelEventTestMonitorCompletionDeferrer {

Consider just using a local and moving it because this function is unconditionally invoked (so not avoiding computing it sometimes) and its body is branchless.  Oh, the repeated reinterpret_casts i now see. Could extract this lambda into a real function that does the cast.

> Source/WebCore/page/scrolling/mac/ScrollingCoordinatorMac.mm:101
> +    auto makeDeferrer = [&]() -> WheelEventTestMonitorCompletionDeferrer {

Same as above.
Comment 4 Simon Fraser (smfr) 2020-12-01 19:28:44 PST
https://trac.webkit.org/r270338
Comment 5 Radar WebKit Bug Importer 2020-12-01 19:29:20 PST
<rdar://problem/71878326>