RFR 8035735: Metaspace::contains become extremely slow in some cases

Daniel D. Daugherty daniel.daugherty at oracle.com
Fri Feb 28 14:03:18 PST 2014

On 2/28/14 1:08 PM, Coleen Phillimore wrote:
> Summary: Call is_metadata instead which does less work for the call in 
> debugInfo.hpp which is called for all compiled code stack frames.
> open webrev at http://cr.openjdk.java.net/~coleenp/8035735/

     line 276: // is_metadata is a faster check
          In the context of the current code review, the comment is fine,
          but when you read it down the road (by itself), you'll ask 
          Faster than what? :-)


          // is_metadata() is a faster check than is_metaspace_object()

     No comments.

Thumbs up, modulo Jon M's question...


> bug link https://bugs.openjdk.java.net/browse/JDK-8035735
> Tested with failing test case, nsk.quick.testlist, jcks and jtreg tests.
> Coleen

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