Update on what happened in WebKit in the week from October 27 to November 3.
A calmer week this time! This week we have the GTK and WPE ports implementing the RunLoopObserver infrastructure, which enables more sophisticated scheduling in WebKit Linux ports, as well as more information in webkit://gpu. On the Trusted Types front, the timing of check was changed to align with spec changes.
Cross-Port 🐱
Implemented the RunLoopObserver
infrastructure for GTK and WPE ports, a critical piece of technology previously
exclusive to Apple ports that enables sophisticated scheduling features like
OpportunisticTaskScheduler for optimal garbage collection timing.
The implementation refactored the GLib run loop to notify clients about
activity-state transitions (BeforeWaiting, Entry, Exit, AfterWaiting),
then moved from timer-based to
observer-based layer flushing for more
precise control over rendering updates. Finally support was added to support
cross-thread scheduling of RunLoopObservers, allowing the ThreadedCompositor
to use them, enabling deterministic
composition notifications across thread boundaries.
Changed timing of Trusted Types checks within DOM attribute handling to align with spec changes.
Graphics 🖼️
The webkit://gpu page now shows
more
information like the list of
preferred buffer formats, the list of supported buffer formats, threaded
rendering information, number of MSAA samples, view size, and toplevel state.
It is also now possible to make the
page autorefresh every the given amount of seconds by passing a
?refresh=<seconds> parameter in the URL.
That’s all for this week!
