[Webkit-unassigned] [Bug 144649] New: [Content Extensions] Limit NFA size

Tue May 5 17:30:30 PDT 2015

https://bugs.webkit.org/show_bug.cgi?id=144649

            Bug ID: 144649
           Summary: [Content Extensions] Limit NFA size
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: achristensen at apple.com

Right now weâ€™re making an NFA with 249069 nodes.  The NFA uses 100MB of memory.  The DFA uses 241MB of memory.  This is bad.
Limiting the NFA size to 50000 splits this into 7 NFAs.  The largest NFA uses 27MB of memory.  The largest DFA uses 44 MB of memory.  
We could tune the max size later, but we really need a max size.

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