Mercurial > hg > graal-jvmci-8
diff src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp @ 4095:bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
Summary: Select number of GC threads dynamically based on heap usage and number of Java threads
Reviewed-by: johnc, ysr, jcoomes
| author | jmasa |
|---|---|
| date | Tue, 09 Aug 2011 10:16:01 -0700 |
| parents | 5a5ed80bea5b |
| children | 441e946dc1af |
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--- a/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp Tue Nov 22 04:47:10 2011 -0500 +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp Tue Aug 09 10:16:01 2011 -0700 @@ -668,12 +668,16 @@ // We de-virtualize the block-related calls below, since we know that our // space is a CompactibleFreeListSpace. + #define FreeListSpace_DCTOC__walk_mem_region_with_cl_DEFN(ClosureType) \ void FreeListSpace_DCTOC::walk_mem_region_with_cl(MemRegion mr, \ HeapWord* bottom, \ HeapWord* top, \ ClosureType* cl) { \ - if (SharedHeap::heap()->n_par_threads() > 0) { \ + bool is_par = SharedHeap::heap()->n_par_threads() > 0; \ + if (is_par) { \ + assert(SharedHeap::heap()->n_par_threads() == \ + SharedHeap::heap()->workers()->active_workers(), "Mismatch"); \ walk_mem_region_with_cl_par(mr, bottom, top, cl); \ } else { \ walk_mem_region_with_cl_nopar(mr, bottom, top, cl); \ @@ -1925,6 +1929,9 @@ if (rem_size < SmallForDictionary) { bool is_par = (SharedHeap::heap()->n_par_threads() > 0); if (is_par) _indexedFreeListParLocks[rem_size]->lock(); + assert(!is_par || + (SharedHeap::heap()->n_par_threads() == + SharedHeap::heap()->workers()->active_workers()), "Mismatch"); returnChunkToFreeList(ffc); split(size, rem_size); if (is_par) _indexedFreeListParLocks[rem_size]->unlock();