Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 3973:663cb89032b1
7092412: G1: Some roots not marked during an initial mark that gets an evacuation failure
Summary: As a result of the changes for 7080389, an evacuation failure during an initial mark pause may result in some root objects not being marked. Pass whether the caller is a root scanning closure into the evacuation failure handling code so that the thread that successfully forwards an object to itself also marks the object.
Reviewed-by: ysr, brutisso, tonyp
author | johnc |
---|---|
date | Tue, 20 Sep 2011 15:39:17 -0700 |
parents | eeae91c9baba |
children | 4dfb2df418f2 |
rev | line source |
---|---|
342 | 1 /* |
3765
ae5b2f1dcf12
7045662: G1: OopsInHeapRegionClosure::set_region() should not be virtual
tonyp
parents:
1972
diff
changeset
|
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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1261
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1261
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1261
diff
changeset
|
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; |
342 | 37 |
38 // A class that scans oops in a given heap region (much as OopsInGenClosure | |
39 // scans oops in a generation.) | |
40 class OopsInHeapRegionClosure: public OopsInGenClosure { | |
41 protected: | |
42 HeapRegion* _from; | |
43 public: | |
3765
ae5b2f1dcf12
7045662: G1: OopsInHeapRegionClosure::set_region() should not be virtual
tonyp
parents:
1972
diff
changeset
|
44 void set_region(HeapRegion* from) { _from = from; } |
342 | 45 }; |
46 | |
47 class G1ParClosureSuper : public OopsInHeapRegionClosure { | |
48 protected: | |
49 G1CollectedHeap* _g1; | |
50 G1RemSet* _g1_rem; | |
51 ConcurrentMark* _cm; | |
52 G1ParScanThreadState* _par_scan_state; | |
3886
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
53 bool _during_initial_mark; |
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
54 bool _mark_in_progress; |
342 | 55 public: |
56 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); | |
57 bool apply_to_weak_ref_discovered_field() { return true; } | |
58 }; | |
59 | |
1261 | 60 class G1ParPushHeapRSClosure : public G1ParClosureSuper { |
61 public: | |
62 G1ParPushHeapRSClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
63 G1ParClosureSuper(g1, par_scan_state) { } | |
64 template <class T> void do_oop_nv(T* p); | |
65 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
66 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
67 }; | |
68 | |
342 | 69 class G1ParScanClosure : public G1ParClosureSuper { |
70 public: | |
71 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
72 G1ParClosureSuper(g1, par_scan_state) { } | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
73 template <class T> void do_oop_nv(T* p); |
342 | 74 virtual void do_oop(oop* p) { do_oop_nv(p); } |
75 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
76 }; | |
77 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
78 #define G1_PARTIAL_ARRAY_MASK 0x2 |
342 | 79 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
80 template <class T> inline bool has_partial_array_mask(T* ref) { |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
81 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK; |
526 | 82 } |
83 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
84 template <class T> inline T* set_partial_array_mask(T obj) { |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
85 assert(((uintptr_t)obj & G1_PARTIAL_ARRAY_MASK) == 0, "Information loss!"); |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
86 return (T*) ((uintptr_t)obj | G1_PARTIAL_ARRAY_MASK); |
526 | 87 } |
88 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
89 template <class T> inline oop clear_partial_array_mask(T* ref) { |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
90 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); |
526 | 91 } |
92 | |
342 | 93 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
94 G1ParScanClosure _scanner; | |
95 public: | |
96 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
97 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state) { } | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
98 template <class T> void do_oop_nv(T* p); |
342 | 99 virtual void do_oop(oop* p) { do_oop_nv(p); } |
100 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
101 }; | |
102 | |
103 | |
104 class G1ParCopyHelper : public G1ParClosureSuper { | |
105 G1ParScanClosure *_scanner; | |
106 protected: | |
3886
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
107 template <class T> void mark_object(T* p); |
3973
663cb89032b1
7092412: G1: Some roots not marked during an initial mark that gets an evacuation failure
johnc
parents:
3886
diff
changeset
|
108 oop copy_to_survivor_space(oop obj, bool should_mark_root, |
663cb89032b1
7092412: G1: Some roots not marked during an initial mark that gets an evacuation failure
johnc
parents:
3886
diff
changeset
|
109 bool should_mark_copy); |
342 | 110 public: |
111 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | |
112 G1ParScanClosure *scanner) : | |
113 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | |
114 }; | |
115 | |
526 | 116 template<bool do_gen_barrier, G1Barrier barrier, |
3886
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
117 bool do_mark_object> |
342 | 118 class G1ParCopyClosure : public G1ParCopyHelper { |
119 G1ParScanClosure _scanner; | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
120 template <class T> void do_oop_work(T* p); |
342 | 121 public: |
122 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | |
123 _scanner(g1, par_scan_state), G1ParCopyHelper(g1, par_scan_state, &_scanner) { } | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
124 template <class T> void do_oop_nv(T* p) { |
342 | 125 do_oop_work(p); |
126 } | |
127 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
128 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
129 }; | |
130 | |
1261 | 131 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; |
132 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | |
133 typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; | |
134 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; | |
135 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | |
136 typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; | |
137 | |
526 | 138 // This is the only case when we set skip_cset_test. Basically, this |
139 // closure is (should?) only be called directly while we're draining | |
140 // the overflow and task queues. In that case we know that the | |
141 // reference in question points into the collection set, otherwise we | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
142 // would not have pushed it on the queue. The following is defined in |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
143 // g1_specialized_oop_closures.hpp. |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
144 // typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure; |
526 | 145 // We need a separate closure to handle references during evacuation |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
146 // failure processing, as we cannot asume that the reference already |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
147 // points into the collection set (like G1ParScanHeapEvacClosure does). |
1261 | 148 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; |
342 | 149 |
150 class FilterIntoCSClosure: public OopClosure { | |
151 G1CollectedHeap* _g1; | |
152 OopClosure* _oc; | |
153 DirtyCardToOopClosure* _dcto_cl; | |
154 public: | |
155 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
156 G1CollectedHeap* g1, OopClosure* oc) : | |
157 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) | |
158 {} | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
159 template <class T> void do_oop_nv(T* p); |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
160 virtual void do_oop(oop* p) { do_oop_nv(p); } |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
161 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 162 bool apply_to_weak_ref_discovered_field() { return true; } |
163 bool do_header() { return false; } | |
164 }; | |
165 | |
166 class FilterOutOfRegionClosure: public OopClosure { | |
167 HeapWord* _r_bottom; | |
168 HeapWord* _r_end; | |
169 OopClosure* _oc; | |
170 int _out_of_region; | |
171 public: | |
172 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
173 template <class T> void do_oop_nv(T* p); |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
174 virtual void do_oop(oop* p) { do_oop_nv(p); } |
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
175 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 176 bool apply_to_weak_ref_discovered_field() { return true; } |
177 bool do_header() { return false; } | |
178 int out_of_region() { return _out_of_region; } | |
179 }; | |
1972 | 180 |
3771 | 181 // Closure for iterating over object fields during concurrent marking |
182 class G1CMOopClosure : public OopClosure { | |
183 G1CollectedHeap* _g1h; | |
184 ConcurrentMark* _cm; | |
185 CMTask* _task; | |
186 public: | |
187 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task); | |
188 template <class T> void do_oop_nv(T* p); | |
189 virtual void do_oop( oop* p) { do_oop_nv(p); } | |
190 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
191 }; | |
192 | |
1972 | 193 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP |