[webkit-changes] [WebKit/WebKit] e17ece: Allow MomentumEventDispatcher's acceleration curve...

[Simon Fraser]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: e17ecef9906f930f002bc0a85e246f1b62009551
      https://github.com/WebKit/WebKit/commit/e17ecef9906f930f002bc0a85e246f1b62009551
  Author: Simon Fraser <simon.fraser at apple.com>
  Date:   2023-02-21 (Tue, 21 Feb 2023)

  Changed paths:
    M Source/WebKit/WebProcess/WebPage/EventDispatcher.cpp
    M Source/WebKit/WebProcess/WebPage/MomentumEventDispatcher.cpp
    M Source/WebKit/WebProcess/WebPage/MomentumEventDispatcher.h

  Log Message:
  -----------
  Allow MomentumEventDispatcher's acceleration curve to be set in a thread safe way
https://bugs.webkit.org/show_bug.cgi?id=252646
rdar://105710770

Reviewed by Tim Horton.

UI-side compositing will want to set MomentumEventDispatcher's scrollingAccelerationCurve while another
thread is potentially reading it for the current gesture, so lock around reading and writing the m_accelerationCurves.

Also remove the DisplayUpdate argument to displayWasRefreshed() since it's unused.

* Source/WebKit/WebProcess/WebPage/EventDispatcher.cpp:
(WebKit::EventDispatcher::displayWasRefreshed):
* Source/WebKit/WebProcess/WebPage/MomentumEventDispatcher.cpp:
(WebKit::MomentumEventDispatcher::eventShouldStartSyntheticMomentumPhase const):
(WebKit::MomentumEventDispatcher::didStartMomentumPhase):
(WebKit::MomentumEventDispatcher::setScrollingAccelerationCurve):
(WebKit::MomentumEventDispatcher::scrollingAccelerationCurveForPage const):
(WebKit::MomentumEventDispatcher::displayWasRefreshed):
* Source/WebKit/WebProcess/WebPage/MomentumEventDispatcher.h:

Canonical link: https://commits.webkit.org/260617@main