Bug 244670

Summary: Support desired callback queue for loadFromHTMLWithData to prevent deadlocks
Product: WebKit Reporter: Jonathan Bedard <jbedard>
Component: WebKit APIAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WONTFIX    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Jonathan Bedard 2022-09-01 08:53:20 PDT 
The UIKit usage of this API permits public clients to call into `loadObjectOfClass` from the main queue, therefore typically spinning the run loop or using semaphores. As a result, it’ll deadlock due to loadFromHTMLWithData always re-dispatching back out onto the main queue for its callback.

The only way to get around this is to provide a callback queue up front.
Comment 1 Jonathan Bedard 2022-09-01 08:53:43 PDT 
<rdar://problem/99404547>
Comment 2 Kieran Senior 2022-09-01 09:14:20 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/3897