Extract all the logic to hop to and back from the main thread out of the WebLockManager and into a MainThreadBridge internal class. This is similar to what was done for BroadcastChannel already. It provides better structuring and slightly better performance by calling isolatedCopy() on the ClientOrigin only once instead of on every call.
Created attachment 445786 [details] Patch
Comment on attachment 445786 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=445786&action=review > Source/WebCore/Modules/web-locks/WebLockManager.cpp:68 > +class WebLockManager::MainThreadBridge : public ThreadSafeRefCounted<MainThreadBridge, WTF::DestructionThread::Main> { Are we reference counting this just for the "destroy on main thread" bit? Because if so, I suggest we instead use unique_ptr and null it out on the main thread in ~WebLockManager. I don’t see any ref/deref of this going on.
Comment on attachment 445786 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=445786&action=review We need ref-counting to keep ourselves alive while dispatching to the main thread as well. > Source/WebCore/Modules/web-locks/WebLockManager.cpp:161 > + Ref protectedThis { *this }; We Ref here. > Source/WebCore/Modules/web-locks/WebLockManager.cpp:165 > + downcast<WorkerGlobalScope>(*m_context).thread().workerLoaderProxy().postTaskToLoader([task = WTFMove(task), protectedThis = Ref { *this }](auto& context) { and here.
Committed r286474 (244813@main): <https://commits.webkit.org/244813@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 445786 [details].
<rdar://problem/85999405>