[Webkit-unassigned] [Bug 54130] New: Request adding a callback on JSClassRef release

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=54130

           Summary: Request adding a callback on JSClassRef release
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: p.balzarek at googlemail.com
                CC: oliver at apple.com


At the moment there is no way to tell when a JSClassRef will be destroyed, so resources acquired for the creation of a JSClassRef can't be released in a timely manner. This problem arises for example when calling from Haskell into JavaScriptCore as the creation of function pointers from Haskell functions allocates memory that needs to be freed explicitly at the end of the pointers lifetime.
I therefore request a way to attach a callback to a JSClassRef to be called when it is finalized.

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