How to counter object created by hotspot

[Colin(Du Li)]

Hi, guys,

I wanna count the number of Java Objects created by Hotspot. Does Hotspot
have some tool to count them?

If no, I just count how many times the following two methods are invoked, is
that accurate? 
            CollectedHeap::common_permanent_mem_allocate_init(size_t size,
TRAPS)
            CollectedHeap::common_mem_allocate_init(size_t size, bool
is_noref, TRAPS)

Is there better solution to do this counting?

p.s. I use serial GC.

Thanks a lot!

Colin
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