Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 20808:d3cec14f33f3
Remove G1 heap hack
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Tue, 07 Apr 2015 19:00:45 +0200 |
parents | 7848fc12602b |
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rev | line source |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2014, 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 | |
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28 #include "memory/iterator.hpp" |
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29 |
342 | 30 class HeapRegion; |
31 class G1CollectedHeap; | |
32 class G1RemSet; | |
33 class ConcurrentMark; | |
34 class DirtyCardToOopClosure; | |
35 class CMBitMap; | |
36 class CMMarkStack; | |
37 class G1ParScanThreadState; | |
3771 | 38 class CMTask; |
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39 class ReferenceProcessor; |
342 | 40 |
41 // A class that scans oops in a given heap region (much as OopsInGenClosure | |
42 // scans oops in a generation.) | |
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43 class OopsInHeapRegionClosure: public ExtendedOopClosure { |
342 | 44 protected: |
45 HeapRegion* _from; | |
46 public: | |
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47 void set_region(HeapRegion* from) { _from = from; } |
342 | 48 }; |
49 | |
50 class G1ParClosureSuper : public OopsInHeapRegionClosure { | |
51 protected: | |
52 G1CollectedHeap* _g1; | |
53 G1ParScanThreadState* _par_scan_state; | |
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54 uint _worker_id; |
342 | 55 public: |
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56 // Initializes the instance, leaving _par_scan_state uninitialized. Must be done |
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57 // later using the set_par_scan_thread_state() method. |
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58 G1ParClosureSuper(G1CollectedHeap* g1); |
342 | 59 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); |
60 bool apply_to_weak_ref_discovered_field() { return true; } | |
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61 |
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62 void set_par_scan_thread_state(G1ParScanThreadState* par_scan_state); |
342 | 63 }; |
64 | |
1261 | 65 class G1ParPushHeapRSClosure : public G1ParClosureSuper { |
66 public: | |
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67 G1ParPushHeapRSClosure(G1CollectedHeap* g1, |
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68 G1ParScanThreadState* par_scan_state): |
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69 G1ParClosureSuper(g1, par_scan_state) { } |
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70 |
1261 | 71 template <class T> void do_oop_nv(T* p); |
72 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
73 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
74 }; | |
75 | |
342 | 76 class G1ParScanClosure : public G1ParClosureSuper { |
77 public: | |
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78 G1ParScanClosure(G1CollectedHeap* g1, ReferenceProcessor* rp) : |
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79 G1ParClosureSuper(g1) { |
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80 assert(_ref_processor == NULL, "sanity"); |
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81 _ref_processor = rp; |
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82 } |
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83 |
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84 template <class T> void do_oop_nv(T* p); |
342 | 85 virtual void do_oop(oop* p) { do_oop_nv(p); } |
86 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
87 }; | |
88 | |
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89 // Add back base class for metadata |
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90 class G1ParCopyHelper : public G1ParClosureSuper { |
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91 protected: |
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92 Klass* _scanned_klass; |
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93 ConcurrentMark* _cm; |
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94 |
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95 // Mark the object if it's not already marked. This is used to mark |
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96 // objects pointed to by roots that are guaranteed not to move |
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97 // during the GC (i.e., non-CSet objects). It is MT-safe. |
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98 void mark_object(oop obj); |
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99 |
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100 // Mark the object if it's not already marked. This is used to mark |
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101 // objects pointed to by roots that have been forwarded during a |
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102 // GC. It is MT-safe. |
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103 void mark_forwarded_object(oop from_obj, oop to_obj); |
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104 public: |
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105 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); |
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106 |
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107 void set_scanned_klass(Klass* k) { _scanned_klass = k; } |
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108 template <class T> void do_klass_barrier(T* p, oop new_obj); |
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109 }; |
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110 |
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111 template <G1Barrier barrier, G1Mark do_mark_object> |
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112 class G1ParCopyClosure : public G1ParCopyHelper { |
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113 private: |
5987 | 114 template <class T> void do_oop_work(T* p); |
342 | 115 |
116 public: | |
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117 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, |
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118 ReferenceProcessor* rp) : |
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119 G1ParCopyHelper(g1, par_scan_state) { |
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120 assert(_ref_processor == NULL, "sanity"); |
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121 } |
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122 |
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123 template <class T> void do_oop_nv(T* p) { do_oop_work(p); } |
342 | 124 virtual void do_oop(oop* p) { do_oop_nv(p); } |
125 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
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126 |
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127 G1CollectedHeap* g1() { return _g1; }; |
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128 G1ParScanThreadState* pss() { return _par_scan_state; } |
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129 ReferenceProcessor* rp() { return _ref_processor; }; |
342 | 130 }; |
131 | |
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132 typedef G1ParCopyClosure<G1BarrierNone, G1MarkNone> G1ParScanExtRootClosure; |
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133 typedef G1ParCopyClosure<G1BarrierNone, G1MarkFromRoot> G1ParScanAndMarkExtRootClosure; |
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134 typedef G1ParCopyClosure<G1BarrierNone, G1MarkPromotedFromRoot> G1ParScanAndMarkWeakExtRootClosure; |
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135 // We use a separate closure to handle references during evacuation |
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136 // failure processing. |
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137 |
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138 typedef G1ParCopyClosure<G1BarrierEvac, G1MarkNone> G1ParScanHeapEvacFailureClosure; |
342 | 139 |
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140 class FilterIntoCSClosure: public ExtendedOopClosure { |
342 | 141 G1CollectedHeap* _g1; |
142 OopClosure* _oc; | |
143 DirtyCardToOopClosure* _dcto_cl; | |
144 public: | |
145 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
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146 G1CollectedHeap* g1, |
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147 OopClosure* oc) : |
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148 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) { } |
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149 |
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150 template <class T> void do_oop_nv(T* p); |
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151 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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152 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 153 bool apply_to_weak_ref_discovered_field() { return true; } |
154 }; | |
155 | |
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156 class FilterOutOfRegionClosure: public ExtendedOopClosure { |
342 | 157 HeapWord* _r_bottom; |
158 HeapWord* _r_end; | |
159 OopClosure* _oc; | |
160 public: | |
161 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
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162 template <class T> void do_oop_nv(T* p); |
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163 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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164 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 165 bool apply_to_weak_ref_discovered_field() { return true; } |
166 }; | |
1972 | 167 |
3771 | 168 // Closure for iterating over object fields during concurrent marking |
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169 class G1CMOopClosure : public MetadataAwareOopClosure { |
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170 protected: |
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171 ConcurrentMark* _cm; |
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172 private: |
3771 | 173 G1CollectedHeap* _g1h; |
174 CMTask* _task; | |
175 public: | |
176 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task); | |
177 template <class T> void do_oop_nv(T* p); | |
178 virtual void do_oop( oop* p) { do_oop_nv(p); } | |
179 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
180 }; | |
181 | |
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182 // Closure to scan the root regions during concurrent marking |
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183 class G1RootRegionScanClosure : public MetadataAwareOopClosure { |
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184 private: |
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185 G1CollectedHeap* _g1h; |
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186 ConcurrentMark* _cm; |
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187 uint _worker_id; |
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188 public: |
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189 G1RootRegionScanClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, |
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190 uint worker_id) : |
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191 _g1h(g1h), _cm(cm), _worker_id(worker_id) { } |
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192 template <class T> void do_oop_nv(T* p); |
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193 virtual void do_oop( oop* p) { do_oop_nv(p); } |
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194 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
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195 }; |
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196 |
4839 | 197 // Closure that applies the given two closures in sequence. |
198 // Used by the RSet refinement code (when updating RSets | |
199 // during an evacuation pause) to record cards containing | |
200 // pointers into the collection set. | |
201 | |
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202 class G1Mux2Closure : public ExtendedOopClosure { |
4839 | 203 OopClosure* _c1; |
204 OopClosure* _c2; | |
205 public: | |
206 G1Mux2Closure(OopClosure *c1, OopClosure *c2); | |
207 template <class T> void do_oop_nv(T* p); | |
208 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
209 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
210 }; | |
211 | |
212 // A closure that returns true if it is actually applied | |
213 // to a reference | |
214 | |
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215 class G1TriggerClosure : public ExtendedOopClosure { |
4839 | 216 bool _triggered; |
217 public: | |
218 G1TriggerClosure(); | |
219 bool triggered() const { return _triggered; } | |
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 | |
225 // A closure which uses a triggering closure to determine | |
226 // whether to apply an oop closure. | |
227 | |
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228 class G1InvokeIfNotTriggeredClosure: public ExtendedOopClosure { |
4839 | 229 G1TriggerClosure* _trigger_cl; |
230 OopClosure* _oop_cl; | |
231 public: | |
232 G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc); | |
233 template <class T> void do_oop_nv(T* p); | |
234 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
235 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
236 }; | |
237 | |
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238 class G1UpdateRSOrPushRefOopClosure: public ExtendedOopClosure { |
4839 | 239 G1CollectedHeap* _g1; |
240 G1RemSet* _g1_rem_set; | |
241 HeapRegion* _from; | |
242 OopsInHeapRegionClosure* _push_ref_cl; | |
243 bool _record_refs_into_cset; | |
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244 uint _worker_i; |
4839 | 245 |
246 public: | |
247 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h, | |
248 G1RemSet* rs, | |
249 OopsInHeapRegionClosure* push_ref_cl, | |
250 bool record_refs_into_cset, | |
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251 uint worker_i = 0); |
4839 | 252 |
253 void set_from(HeapRegion* from) { | |
254 assert(from != NULL, "from region must be non-NULL"); | |
255 _from = from; | |
256 } | |
257 | |
258 bool self_forwarded(oop obj) { | |
259 bool result = (obj->is_forwarded() && (obj->forwardee()== obj)); | |
260 return result; | |
261 } | |
262 | |
263 bool apply_to_weak_ref_discovered_field() { return true; } | |
264 | |
265 template <class T> void do_oop_nv(T* p); | |
266 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
267 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
268 }; | |
269 | |
1972 | 270 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP |