I'm working on weak stuff this quarter, so I'd like to chime in... :-)
Adding yet another weak list would make the atomic pauses at the end of GC
longer, so we should try to avoid adding yet another list. What about the
following approach: Use a timestamp in the map, and remember that in the
map. If
the timestamp hasn't changed, there's no need to do anything special in the
iterator. Otherwise one would have to get in sync again with the map, but
this
will probably happen very rarely.
https://codereview.chromium.org/259883002/
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