>> If we believe that JS wrappers are relatively uncommon, we can >> store them in a Node's "rare data" structure, and bloat only those >> uncommon nodes that have JS wrappers. > > Depending on exactly how common they are, this could be more net > memory use, if it causes Nodes to have a NodeRareData structure that > wouldn't otherwise. > >> If we believe that JS wrappers are relatively common, we can store >> them directly in a Node, since putting them in a hashtable is net >> more memory use. > > I think only a minority of nodes have wrappers, but on at least some > pages it is likely to be a sizable minority. I did not measure > though - should have.
I should also mention Sam's suggestion, which I think is pretty good: All HTMLElements (or perhaps all Elements) get embedded pointers to their wrappers, since JavaScript traversal of a document is relatively common. All other DOM objects, including generic nodes, use a hash table. Geoff _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
