Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 4072:8aae2050e83e
7092309: G1: introduce old region set
Summary: Keep track of all the old regions in the heap with a heap region set.
Reviewed-by: brutisso, johnc
author | tonyp |
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date | Mon, 07 Nov 2011 22:11:12 -0500 |
parents | 811ec3d0833b |
children | 2ace1c4ee8da |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2011, 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_G1OOPCLOSURES_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP | |
27 | |
342 | 28 class HeapRegion; |
29 class G1CollectedHeap; | |
30 class G1RemSet; | |
31 class ConcurrentMark; | |
32 class DirtyCardToOopClosure; | |
33 class CMBitMap; | |
34 class CMMarkStack; | |
35 class G1ParScanThreadState; | |
3771 | 36 class CMTask; |
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37 class ReferenceProcessor; |
342 | 38 |
39 // A class that scans oops in a given heap region (much as OopsInGenClosure | |
40 // scans oops in a generation.) | |
41 class OopsInHeapRegionClosure: public OopsInGenClosure { | |
42 protected: | |
43 HeapRegion* _from; | |
44 public: | |
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45 void set_region(HeapRegion* from) { _from = from; } |
342 | 46 }; |
47 | |
48 class G1ParClosureSuper : public OopsInHeapRegionClosure { | |
49 protected: | |
50 G1CollectedHeap* _g1; | |
51 G1RemSet* _g1_rem; | |
52 ConcurrentMark* _cm; | |
53 G1ParScanThreadState* _par_scan_state; | |
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54 bool _during_initial_mark; |
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55 bool _mark_in_progress; |
342 | 56 public: |
57 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); | |
58 bool apply_to_weak_ref_discovered_field() { return true; } | |
59 }; | |
60 | |
1261 | 61 class G1ParPushHeapRSClosure : public G1ParClosureSuper { |
62 public: | |
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63 G1ParPushHeapRSClosure(G1CollectedHeap* g1, |
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64 G1ParScanThreadState* par_scan_state): |
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65 G1ParClosureSuper(g1, par_scan_state) { } |
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66 |
1261 | 67 template <class T> void do_oop_nv(T* p); |
68 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
69 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
70 }; | |
71 | |
342 | 72 class G1ParScanClosure : public G1ParClosureSuper { |
73 public: | |
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74 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
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75 G1ParClosureSuper(g1, par_scan_state) |
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76 { |
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77 assert(_ref_processor == NULL, "sanity"); |
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78 _ref_processor = rp; |
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79 } |
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80 |
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81 template <class T> void do_oop_nv(T* p); |
342 | 82 virtual void do_oop(oop* p) { do_oop_nv(p); } |
83 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
84 }; | |
85 | |
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86 #define G1_PARTIAL_ARRAY_MASK 0x2 |
342 | 87 |
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88 template <class T> inline bool has_partial_array_mask(T* ref) { |
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89 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK; |
526 | 90 } |
91 | |
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92 template <class T> inline T* set_partial_array_mask(T obj) { |
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93 assert(((uintptr_t)obj & G1_PARTIAL_ARRAY_MASK) == 0, "Information loss!"); |
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94 return (T*) ((uintptr_t)obj | G1_PARTIAL_ARRAY_MASK); |
526 | 95 } |
96 | |
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97 template <class T> inline oop clear_partial_array_mask(T* ref) { |
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98 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); |
526 | 99 } |
100 | |
342 | 101 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
102 G1ParScanClosure _scanner; | |
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103 |
342 | 104 public: |
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105 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
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106 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state, rp) |
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107 { |
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108 assert(_ref_processor == NULL, "sanity"); |
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109 } |
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110 |
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111 G1ParScanClosure* scanner() { |
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112 return &_scanner; |
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113 } |
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114 |
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115 template <class T> void do_oop_nv(T* p); |
342 | 116 virtual void do_oop(oop* p) { do_oop_nv(p); } |
117 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
118 }; | |
119 | |
120 | |
121 class G1ParCopyHelper : public G1ParClosureSuper { | |
122 G1ParScanClosure *_scanner; | |
123 protected: | |
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124 template <class T> void mark_object(T* p); |
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125 oop copy_to_survivor_space(oop obj, bool should_mark_root, |
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126 bool should_mark_copy); |
342 | 127 public: |
128 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | |
129 G1ParScanClosure *scanner) : | |
130 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | |
131 }; | |
132 | |
526 | 133 template<bool do_gen_barrier, G1Barrier barrier, |
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134 bool do_mark_object> |
342 | 135 class G1ParCopyClosure : public G1ParCopyHelper { |
136 G1ParScanClosure _scanner; | |
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137 |
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138 template <class T> void do_oop_work(T* p); |
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139 |
342 | 140 public: |
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141 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, |
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142 ReferenceProcessor* rp) : |
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143 _scanner(g1, par_scan_state, rp), |
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144 G1ParCopyHelper(g1, par_scan_state, &_scanner) |
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145 { |
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146 assert(_ref_processor == NULL, "sanity"); |
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147 } |
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148 |
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149 G1ParScanClosure* scanner() { return &_scanner; } |
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150 |
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151 template <class T> void do_oop_nv(T* p) { |
342 | 152 do_oop_work(p); |
153 } | |
154 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
155 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
156 }; | |
157 | |
1261 | 158 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; |
159 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | |
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160 |
1261 | 161 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; |
162 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | |
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163 |
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164 // The following closure types are no longer used but are retained |
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165 // for historical reasons: |
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166 // typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; |
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167 // typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; |
1261 | 168 |
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169 // The following closure type is defined in g1_specialized_oop_closures.hpp: |
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170 // |
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171 // typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure; |
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172 |
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173 // We use a separate closure to handle references during evacuation |
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174 // failure processing. |
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175 // We could have used another instance of G1ParScanHeapEvacClosure |
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176 // (since that closure no longer assumes that the references it |
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177 // handles point into the collection set). |
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178 |
1261 | 179 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; |
342 | 180 |
181 class FilterIntoCSClosure: public OopClosure { | |
182 G1CollectedHeap* _g1; | |
183 OopClosure* _oc; | |
184 DirtyCardToOopClosure* _dcto_cl; | |
185 public: | |
186 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
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187 G1CollectedHeap* g1, |
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188 OopClosure* oc) : |
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189 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) { } |
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190 |
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191 template <class T> void do_oop_nv(T* p); |
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192 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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193 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 194 bool apply_to_weak_ref_discovered_field() { return true; } |
195 bool do_header() { return false; } | |
196 }; | |
197 | |
198 class FilterOutOfRegionClosure: public OopClosure { | |
199 HeapWord* _r_bottom; | |
200 HeapWord* _r_end; | |
201 OopClosure* _oc; | |
202 int _out_of_region; | |
203 public: | |
204 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
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205 template <class T> void do_oop_nv(T* p); |
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206 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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207 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 208 bool apply_to_weak_ref_discovered_field() { return true; } |
209 bool do_header() { return false; } | |
210 int out_of_region() { return _out_of_region; } | |
211 }; | |
1972 | 212 |
3771 | 213 // Closure for iterating over object fields during concurrent marking |
214 class G1CMOopClosure : public OopClosure { | |
215 G1CollectedHeap* _g1h; | |
216 ConcurrentMark* _cm; | |
217 CMTask* _task; | |
218 public: | |
219 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task); | |
220 template <class T> void do_oop_nv(T* p); | |
221 virtual void do_oop( oop* p) { do_oop_nv(p); } | |
222 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
223 }; | |
224 | |
1972 | 225 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP |