Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/heapRegion.cpp @ 17755:96b1c2e06e25
8027295: Free CSet takes ~50% of young pause time
Summary: Improve fast card cache iteration and avoid taking locks when freeing the collection set.
Reviewed-by: brutisso
author | tschatzl |
---|---|
date | Mon, 24 Mar 2014 15:30:36 +0100 |
parents | 191174b49bec |
children | 8ee855b4e667 |
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--- a/src/share/vm/gc_implementation/g1/heapRegion.cpp Mon Mar 24 15:30:30 2014 +0100 +++ b/src/share/vm/gc_implementation/g1/heapRegion.cpp Mon Mar 24 15:30:36 2014 +0100 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2001, 2014, 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 @@ -205,7 +205,7 @@ init_top_at_mark_start(); } -void HeapRegion::hr_clear(bool par, bool clear_space) { +void HeapRegion::hr_clear(bool par, bool clear_space, bool locked) { assert(_humongous_type == NotHumongous, "we should have already filtered out humongous regions"); assert(_humongous_start_region == NULL, @@ -223,7 +223,11 @@ if (!par) { // If this is parallel, this will be done later. HeapRegionRemSet* hrrs = rem_set(); - hrrs->clear(); + if (locked) { + hrrs->clear_locked(); + } else { + hrrs->clear(); + } _claimed = InitialClaimValue; } zero_marked_bytes();