OT: Java GC (was: Garbage Collection and Swap)

[Bernd Eckenfels]

In article <40F45DEF.8060307@xxxxxxxxxxxxxx> you wrote:
> I get the impression that the Java VM, for instance, knows what 
> variables are pointers (well, references) and only considers those.  It 
> also knows every object that has even been allocated.  It scans over 
> every pointer it knows about (the "mark" phase), and then it scans over 
> every dynamically allocated memory block (the "sweep" phase) and removes 
> all that have no references.

Well, most VM implementations use an  generative aproach, where fresh
objects are kept in a smaller hot pool and aged out (nursery), expecting
less traversal. It is not enough to keep the marks in a central location
with pointers, since you have actually follow those pointers into the object
and travers the graphs.

http://java.sun.com/products/hotspot/whitepaper.html#5d

Greetings
Bernd
-- 
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Project Freefire - http://www.freefire.org/
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