Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 1861:c32059ef4dc0
6971296: G1: simplify G1RemSet class hierarchy
Summary: Remove G1RemSet base class and StupidG1RemSet class; rename HRInto_G1RemSet to just G1RemSet.
Reviewed-by: ysr, tonyp
| author | johnc |
|---|---|
| date | Tue, 12 Oct 2010 09:36:48 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 342 | 1 /* |
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2 * Copyright (c) 2001, 2009, 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 | |
| 25 class HeapRegion; | |
| 26 class G1CollectedHeap; | |
| 27 class G1RemSet; | |
| 28 class ConcurrentMark; | |
| 29 class DirtyCardToOopClosure; | |
| 30 class CMBitMap; | |
| 31 class CMMarkStack; | |
| 32 class G1ParScanThreadState; | |
| 33 | |
| 34 // A class that scans oops in a given heap region (much as OopsInGenClosure | |
| 35 // scans oops in a generation.) | |
| 36 class OopsInHeapRegionClosure: public OopsInGenClosure { | |
| 37 protected: | |
| 38 HeapRegion* _from; | |
| 39 public: | |
| 40 virtual void set_region(HeapRegion* from) { _from = from; } | |
| 41 }; | |
| 42 | |
| 43 class G1ParClosureSuper : public OopsInHeapRegionClosure { | |
| 44 protected: | |
| 45 G1CollectedHeap* _g1; | |
| 46 G1RemSet* _g1_rem; | |
| 47 ConcurrentMark* _cm; | |
| 48 G1ParScanThreadState* _par_scan_state; | |
| 49 public: | |
| 50 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); | |
| 51 bool apply_to_weak_ref_discovered_field() { return true; } | |
| 52 }; | |
| 53 | |
| 1261 | 54 class G1ParPushHeapRSClosure : public G1ParClosureSuper { |
| 55 public: | |
| 56 G1ParPushHeapRSClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
| 57 G1ParClosureSuper(g1, par_scan_state) { } | |
| 58 template <class T> void do_oop_nv(T* p); | |
| 59 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
| 60 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
| 61 }; | |
| 62 | |
| 342 | 63 class G1ParScanClosure : public G1ParClosureSuper { |
| 64 public: | |
| 65 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
| 66 G1ParClosureSuper(g1, par_scan_state) { } | |
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67 template <class T> void do_oop_nv(T* p); |
| 342 | 68 virtual void do_oop(oop* p) { do_oop_nv(p); } |
| 69 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
| 70 }; | |
| 71 | |
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72 #define G1_PARTIAL_ARRAY_MASK 0x2 |
| 342 | 73 |
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74 template <class T> inline bool has_partial_array_mask(T* ref) { |
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75 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK; |
| 526 | 76 } |
| 77 | |
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78 template <class T> inline T* set_partial_array_mask(T obj) { |
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79 assert(((uintptr_t)obj & G1_PARTIAL_ARRAY_MASK) == 0, "Information loss!"); |
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80 return (T*) ((uintptr_t)obj | G1_PARTIAL_ARRAY_MASK); |
| 526 | 81 } |
| 82 | |
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83 template <class T> inline oop clear_partial_array_mask(T* ref) { |
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84 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); |
| 526 | 85 } |
| 86 | |
| 342 | 87 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
| 88 G1ParScanClosure _scanner; | |
| 89 public: | |
| 90 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
| 91 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state) { } | |
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92 template <class T> void do_oop_nv(T* p); |
| 342 | 93 virtual void do_oop(oop* p) { do_oop_nv(p); } |
| 94 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
| 95 }; | |
| 96 | |
| 97 | |
| 98 class G1ParCopyHelper : public G1ParClosureSuper { | |
| 99 G1ParScanClosure *_scanner; | |
| 100 protected: | |
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101 template <class T> void mark_forwardee(T* p); |
| 342 | 102 oop copy_to_survivor_space(oop obj); |
| 103 public: | |
| 104 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | |
| 105 G1ParScanClosure *scanner) : | |
| 106 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | |
| 107 }; | |
| 108 | |
| 526 | 109 template<bool do_gen_barrier, G1Barrier barrier, |
| 1261 | 110 bool do_mark_forwardee> |
| 342 | 111 class G1ParCopyClosure : public G1ParCopyHelper { |
| 112 G1ParScanClosure _scanner; | |
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113 template <class T> void do_oop_work(T* p); |
| 342 | 114 public: |
| 115 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
| 116 _scanner(g1, par_scan_state), G1ParCopyHelper(g1, par_scan_state, &_scanner) { } | |
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117 template <class T> void do_oop_nv(T* p) { |
| 342 | 118 do_oop_work(p); |
| 119 if (do_mark_forwardee) | |
| 120 mark_forwardee(p); | |
| 121 } | |
| 122 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
| 123 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
| 124 }; | |
| 125 | |
| 1261 | 126 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; |
| 127 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | |
| 128 typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; | |
| 129 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; | |
| 130 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | |
| 131 typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; | |
| 132 | |
| 526 | 133 // This is the only case when we set skip_cset_test. Basically, this |
| 134 // closure is (should?) only be called directly while we're draining | |
| 135 // the overflow and task queues. In that case we know that the | |
| 136 // reference in question points into the collection set, otherwise we | |
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137 // would not have pushed it on the queue. The following is defined in |
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138 // g1_specialized_oop_closures.hpp. |
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139 // typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure; |
| 526 | 140 // We need a separate closure to handle references during evacuation |
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141 // failure processing, as we cannot asume that the reference already |
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142 // points into the collection set (like G1ParScanHeapEvacClosure does). |
| 1261 | 143 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; |
| 342 | 144 |
| 145 class FilterIntoCSClosure: public OopClosure { | |
| 146 G1CollectedHeap* _g1; | |
| 147 OopClosure* _oc; | |
| 148 DirtyCardToOopClosure* _dcto_cl; | |
| 149 public: | |
| 150 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
| 151 G1CollectedHeap* g1, OopClosure* oc) : | |
| 152 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) | |
| 153 {} | |
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154 template <class T> void do_oop_nv(T* p); |
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155 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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156 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
| 342 | 157 bool apply_to_weak_ref_discovered_field() { return true; } |
| 158 bool do_header() { return false; } | |
| 159 }; | |
| 160 | |
| 161 class FilterInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure { | |
| 162 G1CollectedHeap* _g1; | |
| 163 OopsInHeapRegionClosure* _oc; | |
| 164 public: | |
| 165 FilterInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1, | |
| 166 OopsInHeapRegionClosure* oc) : | |
| 167 _g1(g1), _oc(oc) | |
| 168 {} | |
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169 template <class T> void do_oop_nv(T* p); |
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170 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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171 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
| 342 | 172 bool apply_to_weak_ref_discovered_field() { return true; } |
| 173 bool do_header() { return false; } | |
| 174 void set_region(HeapRegion* from) { | |
| 175 _oc->set_region(from); | |
| 176 } | |
| 177 }; | |
| 178 | |
| 179 class FilterAndMarkInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure { | |
| 180 G1CollectedHeap* _g1; | |
| 181 ConcurrentMark* _cm; | |
| 182 OopsInHeapRegionClosure* _oc; | |
| 183 public: | |
| 184 FilterAndMarkInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1, | |
| 185 OopsInHeapRegionClosure* oc, | |
| 186 ConcurrentMark* cm) | |
| 187 : _g1(g1), _oc(oc), _cm(cm) { } | |
| 188 | |
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189 template <class T> void do_oop_nv(T* p); |
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190 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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191 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
| 342 | 192 bool apply_to_weak_ref_discovered_field() { return true; } |
| 193 bool do_header() { return false; } | |
| 194 void set_region(HeapRegion* from) { | |
| 195 _oc->set_region(from); | |
| 196 } | |
| 197 }; | |
| 198 | |
| 199 class FilterOutOfRegionClosure: public OopClosure { | |
| 200 HeapWord* _r_bottom; | |
| 201 HeapWord* _r_end; | |
| 202 OopClosure* _oc; | |
| 203 int _out_of_region; | |
| 204 public: | |
| 205 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
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206 template <class T> void do_oop_nv(T* p); |
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207 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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208 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
| 342 | 209 bool apply_to_weak_ref_discovered_field() { return true; } |
| 210 bool do_header() { return false; } | |
| 211 int out_of_region() { return _out_of_region; } | |
| 212 }; |