Comment #2 on issue 3262 by [email protected]: WeakMap retains references
to values after keys are garbage collected
http://code.google.com/p/v8/issues/detail?id=3262
Full output from d8, showing multiple calls to gc() over a period of time --
d8> gc()
[42691] 93050 ms: Mark-sweep 104.9 (144.1) -> 104.9 (144.1) MB, 123.1 ms
[gc extension] [GC in old space requested].
undefined
d8> keys.length = 0;
0
d8> gc()
[42691] 99805 ms: Mark-sweep 104.9 (144.1) -> 33.9 (75.2) MB, 100.0 ms
[gc extension] [GC in old space requested].
undefined
d8> gc()
[42691] 105609 ms: Mark-sweep 33.9 (75.2) -> 33.9 (72.2) MB, 31.1 ms [gc
extension] [GC in old space requested].
undefined
d8> gc()
[42691] 142712 ms: Mark-sweep 33.9 (72.2) -> 33.9 (72.2) MB, 31.2 ms [gc
extension] [GC in old space requested].
undefined
d8> gc()
[42691] 186226 ms: Mark-sweep 33.9 (72.2) -> 33.9 (72.2) MB, 33.4 ms [gc
extension] [GC in old space requested].
undefined
d8> gc()
[42691] 218422 ms: Mark-sweep 33.9 (72.2) -> 33.9 (72.2) MB, 32.0 ms [gc
extension] [GC in old space requested].
undefined
d8> delete wm
true
d8> gc()
[42691] 230542 ms: Mark-sweep 33.9 (72.2) -> 1.9 (40.2) MB, 5.2 ms [gc
extension] [GC in old space requested].
undefined
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