8008301: G1: guarantee(satb_mq_set.completed_buffers_num() == 0) failure Summary: If the marking stack overflows while the marking tasks are draining the SATB buffers, remark will exit with some SATB buffers left unprocessed. Relax the guarantee to allow for overflow. Reviewed-by: jmasa, brutisso

8009940: G1: assert(_finger == _heap_end) failed, concurrentMark.cpp:809 Summary: Skip reference processing if the global marking stack overflows during remark. Refactor and rename set_phase(); move code that sets the concurrency level into its own routine. Do not call set_phase() from within parallel reference processing; use the concurrency level routine instead. The marking state should only set reset by CMTask[0] during the concurrent phase of the marking cycle; if an overflow occurs at any stage during the remark, the marking state will be reset after reference processing. Reviewed-by: brutisso, jmasa

8009536: G1: Apache Lucene hang during reference processing Summary: In CMTask::do_marking_step(), Skip offering termination and entering the first and second synchronization barriers if called from a serial context, i.e. the VM thread. Reviewed-by: brutisso, tschatzl

Merge

6733980: par compact - TraceGen1Time always shows 0.0000 seconds Summary: Use the correct collector to retrieve accumulated gen1 trace time Reviewed-by: johnc, jmasa

8005602: NPG: classunloading does not happen while CMS GC with -XX:+CMSClassUnloadingEnabled is used Summary: Call purge() on CLDG after sweep(), reorder purge() call in GenCollectedHeap Reviewed-by: jmasa, stefank

Merge

8009593: [parfait] Null pointer deference in hotspot/src/share/vm/oops/constantPool.cpp Summary: added guarantee() to print_entry_on() Reviewed-by: kvn

8009584: [parfait] Null pointer deference in hotspot/src/cpu/x86/vm/relocInfo_x86.cpp Summary: added guarantee() to pd_address_in_code() Reviewed-by: kvn

8006965: remove test_gamma and add dedicated test_* targets instead Reviewed-by: kvn, jcoomes