Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 3980:8229bd737950
7075646: G1: fix inconsistencies in the monitoring data
Summary: Fixed a few inconsistencies in the monitoring data, in particular when reported from jstat.
Reviewed-by: jmasa, brutisso, johnc
author | tonyp |
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date | Fri, 23 Sep 2011 16:07:49 -0400 |
parents | 4dfb2df418f2 |
children | 811ec3d0833b |
rev | line source |
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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 ReferenceProcessor* rp) : |
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66 G1ParClosureSuper(g1, par_scan_state) |
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67 { |
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68 assert(_ref_processor == NULL, "sanity"); |
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69 _ref_processor = rp; |
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70 } |
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71 |
1261 | 72 template <class T> void do_oop_nv(T* p); |
73 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
74 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
75 }; | |
76 | |
342 | 77 class G1ParScanClosure : public G1ParClosureSuper { |
78 public: | |
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79 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
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80 G1ParClosureSuper(g1, par_scan_state) |
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81 { |
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82 assert(_ref_processor == NULL, "sanity"); |
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83 _ref_processor = rp; |
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84 } |
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85 |
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86 template <class T> void do_oop_nv(T* p); |
342 | 87 virtual void do_oop(oop* p) { do_oop_nv(p); } |
88 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
89 }; | |
90 | |
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91 #define G1_PARTIAL_ARRAY_MASK 0x2 |
342 | 92 |
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93 template <class T> inline bool has_partial_array_mask(T* ref) { |
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94 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK; |
526 | 95 } |
96 | |
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97 template <class T> inline T* set_partial_array_mask(T obj) { |
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98 assert(((uintptr_t)obj & G1_PARTIAL_ARRAY_MASK) == 0, "Information loss!"); |
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99 return (T*) ((uintptr_t)obj | G1_PARTIAL_ARRAY_MASK); |
526 | 100 } |
101 | |
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102 template <class T> inline oop clear_partial_array_mask(T* ref) { |
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103 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); |
526 | 104 } |
105 | |
342 | 106 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
107 G1ParScanClosure _scanner; | |
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108 |
342 | 109 public: |
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110 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
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111 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state, rp) |
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112 { |
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113 assert(_ref_processor == NULL, "sanity"); |
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114 } |
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115 |
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116 G1ParScanClosure* scanner() { |
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117 return &_scanner; |
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118 } |
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119 |
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120 template <class T> void do_oop_nv(T* p); |
342 | 121 virtual void do_oop(oop* p) { do_oop_nv(p); } |
122 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
123 }; | |
124 | |
125 | |
126 class G1ParCopyHelper : public G1ParClosureSuper { | |
127 G1ParScanClosure *_scanner; | |
128 protected: | |
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129 template <class T> void mark_object(T* p); |
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130 oop copy_to_survivor_space(oop obj, bool should_mark_root, |
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131 bool should_mark_copy); |
342 | 132 public: |
133 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | |
134 G1ParScanClosure *scanner) : | |
135 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | |
136 }; | |
137 | |
526 | 138 template<bool do_gen_barrier, G1Barrier barrier, |
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139 bool do_mark_object> |
342 | 140 class G1ParCopyClosure : public G1ParCopyHelper { |
141 G1ParScanClosure _scanner; | |
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142 |
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143 template <class T> void do_oop_work(T* p); |
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144 |
342 | 145 public: |
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146 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, |
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147 ReferenceProcessor* rp) : |
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148 _scanner(g1, par_scan_state, rp), |
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149 G1ParCopyHelper(g1, par_scan_state, &_scanner) |
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150 { |
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151 assert(_ref_processor == NULL, "sanity"); |
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152 } |
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153 |
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154 G1ParScanClosure* scanner() { return &_scanner; } |
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155 |
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156 template <class T> void do_oop_nv(T* p) { |
342 | 157 do_oop_work(p); |
158 } | |
159 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
160 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
161 }; | |
162 | |
1261 | 163 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; |
164 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | |
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165 |
1261 | 166 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; |
167 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | |
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168 |
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169 // The following closure types are no longer used but are retained |
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170 // for historical reasons: |
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171 // typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; |
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172 // typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; |
1261 | 173 |
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174 // The following closure type is defined in g1_specialized_oop_closures.hpp: |
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175 // |
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176 // typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure; |
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177 |
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178 // We use a separate closure to handle references during evacuation |
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179 // failure processing. |
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180 // We could have used another instance of G1ParScanHeapEvacClosure |
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181 // (since that closure no longer assumes that the references it |
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182 // handles point into the collection set). |
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183 |
1261 | 184 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; |
342 | 185 |
186 class FilterIntoCSClosure: public OopClosure { | |
187 G1CollectedHeap* _g1; | |
188 OopClosure* _oc; | |
189 DirtyCardToOopClosure* _dcto_cl; | |
190 public: | |
191 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
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192 G1CollectedHeap* g1, |
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193 OopClosure* oc, |
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194 ReferenceProcessor* rp) : |
342 | 195 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) |
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196 { |
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197 assert(_ref_processor == NULL, "sanity"); |
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198 _ref_processor = rp; |
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199 } |
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200 |
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201 template <class T> void do_oop_nv(T* p); |
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202 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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203 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 204 bool apply_to_weak_ref_discovered_field() { return true; } |
205 bool do_header() { return false; } | |
206 }; | |
207 | |
208 class FilterOutOfRegionClosure: public OopClosure { | |
209 HeapWord* _r_bottom; | |
210 HeapWord* _r_end; | |
211 OopClosure* _oc; | |
212 int _out_of_region; | |
213 public: | |
214 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
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215 template <class T> void do_oop_nv(T* p); |
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216 virtual void do_oop(oop* p) { do_oop_nv(p); } |
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217 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 218 bool apply_to_weak_ref_discovered_field() { return true; } |
219 bool do_header() { return false; } | |
220 int out_of_region() { return _out_of_region; } | |
221 }; | |
1972 | 222 |
3771 | 223 // Closure for iterating over object fields during concurrent marking |
224 class G1CMOopClosure : public OopClosure { | |
225 G1CollectedHeap* _g1h; | |
226 ConcurrentMark* _cm; | |
227 CMTask* _task; | |
228 public: | |
229 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task); | |
230 template <class T> void do_oop_nv(T* p); | |
231 virtual void do_oop( oop* p) { do_oop_nv(p); } | |
232 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
233 }; | |
234 | |
1972 | 235 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP |