RESOLVED FIXED 116074
Objective-C API: scanExternalObjectGraph should not create new JSVirtualMachine wrappers 
https://bugs.webkit.org/show_bug.cgi?id=116074
Summary Objective-C API: scanExternalObjectGraph should not create new JSVirtualMachi...
Mark Hahnenberg
Reported 2013-05-13 16:30:47 PDT
If it does, when the scanExternalObjectGraph call finishes and the autorelease pool is drained, we will dealloc the JSVirtualMachine which will cause us to try to take the API lock for the corresponding VM. If this happens on a GC thread other than the "main" thread, we will deadlock. The solution is to just check the VM cache, and if there is no JSVirtualMachine wrapper, return early.
Attachments
Patch (1.96 KB, patch)
2013-05-13 18:17 PDT, Mark Hahnenberg 		darin: review+
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Mark Hahnenberg
Comment 1 2013-05-13 18:17:28 PDT
Created attachment 201659 [details] Patch
Mark Hahnenberg
Comment 2 2013-05-13 18:18:15 PDT
<rdar://problem/13877067>
Mark Hahnenberg
Comment 3 2013-05-13 19:48:59 PDT
Committed r150050: <http://trac.webkit.org/changeset/150050>
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