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6786503: Overflow list performance can be improved

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Avoid overflow list walk in CMS & ParNew when it is unnecessary. Fix a couple of correctness issues, including a C-heap leak, in ParNew at the intersection of promotion failure, work queue overflow and object array chunking. Add stress testing option and related assertion checking.

Reviewed-by: jmasa
This commit is contained in:
Y. Srinivas Ramakrishna 2009-01-26 12:47:21 -08:00
parent 8109aa4a16
commit f031c45430
7 changed files with 294 additions and 78 deletions
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hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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@ -595,7 +595,7 @@ class CMSCollector: public CHeapObj {
size_t _ser_kac_preclean_ovflw;
size_t _ser_kac_ovflw;
size_t _par_kac_ovflw;
NOT_PRODUCT(size_t _num_par_pushes;)
NOT_PRODUCT(ssize_t _num_par_pushes;)
// ("Weak") Reference processing support
ReferenceProcessor* _ref_processor;