Mercurial > hg > truffle
diff src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp @ 2369:92da084fefc9
6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads
Summary: Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future.
Reviewed-by: jmasa, johnc
| author | ysr |
|---|---|
| date | Thu, 17 Mar 2011 10:32:46 -0700 |
| parents | 74ee0db180fa |
| children | b099aaf51bf8 |
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--- a/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp Wed Mar 16 10:37:08 2011 -0700 +++ b/src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp Thu Mar 17 10:32:46 2011 -0700 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -796,13 +796,15 @@ // Initialize ref handling object for scavenging. MemRegion mr = young_gen->reserved(); - _ref_processor = ReferenceProcessor::create_ref_processor( - mr, // span - true, // atomic_discovery - true, // mt_discovery - NULL, // is_alive_non_header - ParallelGCThreads, - ParallelRefProcEnabled); + _ref_processor = + new ReferenceProcessor(mr, // span + ParallelRefProcEnabled && (ParallelGCThreads > 1), // mt processing + (int) ParallelGCThreads, // mt processing degree + true, // mt discovery + (int) ParallelGCThreads, // mt discovery degree + true, // atomic_discovery + NULL, // header provides liveness info + false); // next field updates do not need write barrier // Cache the cardtable BarrierSet* bs = Universe::heap()->barrier_set();