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gc_roots count correct? [message #1707893]

Thu, 10 September 2015 08:43

Sergey Maslov

Messages: 2
Registered: September 2015

Junior Member

I've found that gc_roots search shows duplicate classes (see attach).
Is it expected behavior?

Attachment: gc_roots.xlsx
(Size: 32.82KB, Downloaded 454 times)

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Re: gc_roots count correct? [message #1708613 is a reply to message #1707893]

Fri, 18 September 2015 06:44

Krum Tsvetkov

Messages: 164
Registered: July 2009

Senior Member

I checked it with a random heap dump I had on my disk and I also get redundant entries.
I looked further, and figured out that from the dump we get multiple times records of type ROOT STICKY CLASS (what we display in MAT as System Class) for one and the same class.
So I don't think the info shown by gc_roots is wrong. Still it may make sense to filter the duplicates and show only one entry per class in this specific query.
I'll have a look.

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