Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/heapRegionSets.hpp @ 3979:4dfb2df418f2
6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
| author | johnc |
|---|---|
| date | Thu, 22 Sep 2011 10:57:37 -0700 |
| parents | e8b0b0392037 |
| children | 8aae2050e83e |
| rev | line source |
|---|---|
| 2152 | 1 /* |
|
3765
ae5b2f1dcf12
7045662: G1: OopsInHeapRegionClosure::set_region() should not be virtual
tonyp
parents:
2152
diff
changeset
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
| 2152 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP | |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP | |
| 27 | |
| 28 #include "gc_implementation/g1/heapRegionSet.inline.hpp" | |
| 29 | |
| 30 //////////////////// FreeRegionList //////////////////// | |
| 31 | |
| 32 class FreeRegionList : public HeapRegionLinkedList { | |
| 33 protected: | |
| 34 virtual const char* verify_region_extra(HeapRegion* hr); | |
| 35 | |
| 36 virtual bool regions_humongous() { return false; } | |
| 37 virtual bool regions_empty() { return true; } | |
| 38 | |
| 39 public: | |
| 40 FreeRegionList(const char* name) : HeapRegionLinkedList(name) { } | |
| 41 }; | |
| 42 | |
| 43 //////////////////// MasterFreeRegionList //////////////////// | |
| 44 | |
| 45 class MasterFreeRegionList : public FreeRegionList { | |
| 46 protected: | |
|
3777
e8b0b0392037
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
3765
diff
changeset
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47 virtual const char* verify_region_extra(HeapRegion* hr); |
| 2152 | 48 virtual bool check_mt_safety(); |
| 49 | |
| 50 public: | |
| 51 MasterFreeRegionList(const char* name) : FreeRegionList(name) { } | |
| 52 }; | |
| 53 | |
| 54 //////////////////// SecondaryFreeRegionList //////////////////// | |
| 55 | |
| 56 class SecondaryFreeRegionList : public FreeRegionList { | |
| 57 protected: | |
| 58 virtual bool check_mt_safety(); | |
| 59 | |
| 60 public: | |
| 61 SecondaryFreeRegionList(const char* name) : FreeRegionList(name) { } | |
| 62 }; | |
| 63 | |
| 64 //////////////////// HumongousRegionSet //////////////////// | |
| 65 | |
| 66 class HumongousRegionSet : public HeapRegionSet { | |
| 67 protected: | |
| 68 virtual const char* verify_region_extra(HeapRegion* hr); | |
| 69 | |
| 70 virtual bool regions_humongous() { return true; } | |
| 71 virtual bool regions_empty() { return false; } | |
| 72 | |
| 73 public: | |
| 74 HumongousRegionSet(const char* name) : HeapRegionSet(name) { } | |
| 75 }; | |
| 76 | |
| 77 //////////////////// MasterHumongousRegionSet //////////////////// | |
| 78 | |
| 79 class MasterHumongousRegionSet : public HumongousRegionSet { | |
| 80 protected: | |
| 81 virtual bool check_mt_safety(); | |
| 82 | |
| 83 public: | |
| 84 MasterHumongousRegionSet(const char* name) : HumongousRegionSet(name) { } | |
| 85 }; | |
| 86 | |
| 87 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP |