Question about the mapping of oopDesc and KlassOop
dawn2004 at gmail.com
Wed Feb 18 09:56:14 PST 2009
Thanks a lot!
Keith McGuigan wrote:
> Colin(Du Li) wrote:
>> Then, every java class has only one klassOop object in the heap, or it
>> have more one klassOop instance?
> There are a couple of data structures that correspond to a "java class",
> one of them is an instanceKlassOop, which is what the VM uses to hold
> most of the class information. Another is the java-level mirror (which
> is a normal Java instance object (instanceOop), and what you get when
> you call getClass() or use X.class in Java). But yes, there is only
> one instanceKlass and mirror object per "Java class".
> - Keith
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