Embedding v8 4.6.88.
Suppose my native function sequence() returns a JavaScript iterable
wrapping a long sequence of internal objects; function gc() invokes
v8::Isolate::LowMemoryNotification(). To reduce memory consumption of the
iterable, gc() needs to be called periodically to release the objects no
longer referenced by the script.
The following script is able to iterate through the sequence to the end,
and when gc() is called, no weak callback is called to the object backing s:
var i = 0; var s = sequence(); for (doc of s) { i++; if (i%1000 == 0) gc();
} i
==> 131108
However, if no variable s is defined, the execution stops after the first
gc, because the object returned from sequence() is also collected at gc:
var i = 0; for (doc of sequence()) { i++; if (i%1000 == 0) gc(); } i
==>1000
This looks like a bug to me. Can anyone chime in?
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