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annotate src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | 0ac769a57c64 |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| 342 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1SATBCARDTABLEMODREFBS_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1SATBCARDTABLEMODREFBS_HPP | |
| 27 | |
| 28 #include "memory/cardTableModRefBS.hpp" | |
| 29 #include "memory/memRegion.hpp" | |
| 30 #include "oops/oop.inline.hpp" | |
| 31 | |
| 342 | 32 #ifndef SERIALGC |
| 33 | |
| 34 class DirtyCardQueueSet; | |
| 35 | |
| 36 // This barrier is specialized to use a logging barrier to support | |
| 37 // snapshot-at-the-beginning marking. | |
| 38 | |
| 39 class G1SATBCardTableModRefBS: public CardTableModRefBSForCTRS { | |
| 40 private: | |
| 41 // Add "pre_val" to a set of objects that may have been disconnected from the | |
| 42 // pre-marking object graph. | |
| 43 static void enqueue(oop pre_val); | |
| 44 | |
| 45 public: | |
| 46 G1SATBCardTableModRefBS(MemRegion whole_heap, | |
| 47 int max_covered_regions); | |
| 48 | |
| 49 bool is_a(BarrierSet::Name bsn) { | |
| 50 return bsn == BarrierSet::G1SATBCT || CardTableModRefBS::is_a(bsn); | |
| 51 } | |
| 52 | |
| 53 virtual bool has_write_ref_pre_barrier() { return true; } | |
| 54 | |
| 55 // This notes that we don't need to access any BarrierSet data | |
| 56 // structures, so this can be called from a static context. | |
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57 template <class T> static void write_ref_field_pre_static(T* field, oop newVal) { |
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58 T heap_oop = oopDesc::load_heap_oop(field); |
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59 if (!oopDesc::is_null(heap_oop)) { |
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60 enqueue(oopDesc::decode_heap_oop(heap_oop)); |
| 342 | 61 } |
| 62 } | |
| 63 | |
| 64 // When we know the current java thread: | |
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65 template <class T> static void write_ref_field_pre_static(T* field, oop newVal, |
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66 JavaThread* jt); |
| 342 | 67 |
| 68 // We export this to make it available in cases where the static | |
| 69 // type of the barrier set is known. Note that it is non-virtual. | |
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70 template <class T> inline void inline_write_ref_field_pre(T* field, oop newVal) { |
| 342 | 71 write_ref_field_pre_static(field, newVal); |
| 72 } | |
| 73 | |
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74 // These are the more general virtual versions. |
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75 virtual void write_ref_field_pre_work(oop* field, oop new_val) { |
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76 inline_write_ref_field_pre(field, new_val); |
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77 } |
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78 virtual void write_ref_field_pre_work(narrowOop* field, oop new_val) { |
| 342 | 79 inline_write_ref_field_pre(field, new_val); |
| 80 } | |
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81 virtual void write_ref_field_pre_work(void* field, oop new_val) { |
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82 guarantee(false, "Not needed"); |
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83 } |
| 342 | 84 |
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85 template <class T> void write_ref_array_pre_work(T* dst, int count); |
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86 virtual void write_ref_array_pre(oop* dst, int count) { |
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87 write_ref_array_pre_work(dst, count); |
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88 } |
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89 virtual void write_ref_array_pre(narrowOop* dst, int count) { |
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90 write_ref_array_pre_work(dst, count); |
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91 } |
| 342 | 92 }; |
| 93 | |
| 94 // Adds card-table logging to the post-barrier. | |
| 95 // Usual invariant: all dirty cards are logged in the DirtyCardQueueSet. | |
| 96 class G1SATBCardTableLoggingModRefBS: public G1SATBCardTableModRefBS { | |
| 97 private: | |
| 98 DirtyCardQueueSet& _dcqs; | |
| 99 public: | |
| 100 G1SATBCardTableLoggingModRefBS(MemRegion whole_heap, | |
| 101 int max_covered_regions); | |
| 102 | |
| 103 bool is_a(BarrierSet::Name bsn) { | |
| 104 return bsn == BarrierSet::G1SATBCTLogging || | |
| 105 G1SATBCardTableModRefBS::is_a(bsn); | |
| 106 } | |
| 107 | |
| 108 void write_ref_field_work(void* field, oop new_val); | |
| 109 | |
| 110 // Can be called from static contexts. | |
| 111 static void write_ref_field_static(void* field, oop new_val); | |
| 112 | |
| 113 // NB: if you do a whole-heap invalidation, the "usual invariant" defined | |
| 114 // above no longer applies. | |
| 115 void invalidate(MemRegion mr, bool whole_heap = false); | |
| 116 | |
| 117 void write_region_work(MemRegion mr) { invalidate(mr); } | |
| 118 void write_ref_array_work(MemRegion mr) { invalidate(mr); } | |
| 119 | |
| 120 | |
| 121 }; | |
| 122 | |
| 123 | |
| 124 #endif // SERIALGC | |
| 1972 | 125 |
| 126 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1SATBCARDTABLEMODREFBS_HPP |