[webkit-dev] Limiting slow unload handlers (Re: Back/forward cache for pages with unload handlers)
ggaren at apple.com
Wed Sep 16 15:13:40 PDT 2009
> The better option, as Adam noted on the bug, is one in which the JS
> engine itself measures how much work has been performed. A count of
> instructions or function calls is a truer measure than the proposed
> count of time checks, but imposes costs on the JS engine that the V8
> team have argued are unacceptably high
measures a combination of wall-clock time and actual executed opcodes.
This mechanism works with no measurable performance cost.
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