On 13.07.2016 16:27, Boris Zbarsky wrote:
On 7/13/16 10:18 AM, Michael Kriegel wrote:
But shouldn't it be predictable, whether there
are still "non-weak" references to an object?
Maybe. The GC may include a machine stack scanner to root things
referenced on the stack, which can give false positives depending on
what integers happen to be hanging out on the stack.
So what does gc do to determine, whether an object still has hard
references pointing towards it?
does NOT depend on, whether the object has actually been gc'ed, but
whether the object does
have "non-weak" references to it.
Determining this basically requires running a full gc, no?
Depends on how the gc works. If "deleting the last reference to an
object" leads to an immediate deletion of all references to other
objects held by this object, then: no.
I am not sure, which kinds of garbage collectors the implementations of
ECMAScript typically use. If they used a reference counter
They don't.
Any resources on what they do? E.g. chrome V8 or Firefox?
-Boris
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