RFR: 8196217: NMT: add_committed_regions doesn't merge succeeding regions

David Holmes david.holmes at oracle.com
Tue Jan 30 02:30:20 UTC 2018

Hi Stefan,

This seems to have caused crashes on Windows. Kim has filed:



On 26/01/2018 7:37 PM, Stefan Karlsson wrote:
> Hi all,
> Please review this patch to fix merging of committed regions in NMT. 
> Before this patch, only the regions without 'next' regions were merged.
> http://cr.openjdk.java.net/~stefank/8196217/webrev.01/
> This was found while running stress tests on ZGC:
> http://mail.openjdk.java.net/pipermail/zgc-dev/2018-January/000127.html
> Tested with the new test in the patch and the rest of the tests in 
> test/hotspot/jtreg/runtime/NMT.
> Thanks,
> StefanK

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