Bug 10264
| Summary: | need ancestorChainHasListenerOfType(type) to avoid malloc during event dispatch | ||
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| Product: | WebKit | Reporter: | Eric Seidel (no email) <eric> |
| Component: | New Bugs | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Normal | ||
| Priority: | P4 | ||
| Version: | 420+ | ||
| Hardware: | Mac | ||
| OS: | OS X 10.4 | ||
Eric Seidel (no email)
need ancestorChainHasListenerOfType(type) to avoid malloc during event dispatch
Certain events could benifit from a function to check if any ancestor has a listener of a specific type.
Such events include:
SVGLoad
mouseMoved
and DOM Mutation events
This would allow us to trade a treewalk for a malloc. The treewalk is likely to be less expensive.
This would also require us to re-work how event listeners are stored. Using a HashMap<AtomicString, Vector<EventListenter> > would be required instead, to allow O(1) lookup of events based on type.
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Eric Seidel (no email)
*** This bug has been marked as a duplicate of 16447 ***