Mark S. Miller wrote:
On Sun, Feb 19, 2012 at 1:52 PM, Brendan Eich <bren...@mozilla.com
<mailto:bren...@mozilla.com>> wrote:
[...]
How? By doing a full walk of the object graph and doing
surgery on it? This sounds more painful than imposing
mediation up front.
No, by indirection, of course ;-). The details vary among browsers.
I think just we're having a terminology problem. To me, such
indirection is mediation.
Definitely I was unclear. The (different) mediation by WindowProxy is
good because local global (oxymoronic, ugh -- let's say "this global")
accesses are unmediated and can be super-optimized.
The mediation by trust-label indirection I was referring to above is
for-all-accesses. That is painful.
A compartment per global makes the process of finding the trust-label
(called a "Principal" in Gecko) significantly faster.
/be
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