Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 5935:a735aec54ea4
7123170: JCK vm/jvmti/ResourceExhausted/resexh001/resexh00101/ tests fails since 7u4 b02
Summary: The JVMTI ResourceExhausted events must be generated in all places where OOME is thrown
Reviewed-by: acorn, coleenp, dcubed, dholmes, dsamersoff, jwilhelm, tonyp
Contributed-by: serguei.spitsyn@oracle.com
author | sspitsyn |
---|---|
date | Wed, 14 Mar 2012 20:06:48 -0700 |
parents | b4ebad3520bb |
children | 748051fd24ce |
rev | line source |
---|---|
342 | 1 /* |
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
2 * Copyright (c) 2001, 2012, 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; |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
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: | |
3765
ae5b2f1dcf12
7045662: G1: OopsInHeapRegionClosure::set_region() should not be virtual
tonyp
parents:
1972
diff
changeset
|
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; | |
4836
d30fa85f9994
6484965: G1: piggy-back liveness accounting phase on marking
johnc
parents:
4787
diff
changeset
|
54 uint _worker_id; |
3886
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
55 bool _during_initial_mark; |
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3771
diff
changeset
|
56 bool _mark_in_progress; |
342 | 57 public: |
58 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state); | |
59 bool apply_to_weak_ref_discovered_field() { return true; } | |
60 }; | |
61 | |
1261 | 62 class G1ParPushHeapRSClosure : public G1ParClosureSuper { |
63 public: | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
64 G1ParPushHeapRSClosure(G1CollectedHeap* g1, |
3983
811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents:
3979
diff
changeset
|
65 G1ParScanThreadState* par_scan_state): |
811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents:
3979
diff
changeset
|
66 G1ParClosureSuper(g1, par_scan_state) { } |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
67 |
1261 | 68 template <class T> void do_oop_nv(T* p); |
69 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
70 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
71 }; | |
72 | |
342 | 73 class G1ParScanClosure : public G1ParClosureSuper { |
74 public: | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
75 G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
76 G1ParClosureSuper(g1, par_scan_state) |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
77 { |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
78 assert(_ref_processor == NULL, "sanity"); |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
79 _ref_processor = rp; |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
80 } |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
81 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
82 template <class T> void do_oop_nv(T* p); |
342 | 83 virtual void do_oop(oop* p) { do_oop_nv(p); } |
84 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
85 }; | |
86 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
87 #define G1_PARTIAL_ARRAY_MASK 0x2 |
342 | 88 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
89 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
|
90 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK; |
526 | 91 } |
92 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
93 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
|
94 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
|
95 return (T*) ((uintptr_t)obj | G1_PARTIAL_ARRAY_MASK); |
526 | 96 } |
97 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
98 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
|
99 return oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK); |
526 | 100 } |
101 | |
342 | 102 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
103 G1ParScanClosure _scanner; | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
104 |
342 | 105 public: |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
106 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, ReferenceProcessor* rp) : |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
107 G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state, rp) |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
108 { |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
109 assert(_ref_processor == NULL, "sanity"); |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
110 } |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
111 |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
112 G1ParScanClosure* scanner() { |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
113 return &_scanner; |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
114 } |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
115 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
116 template <class T> void do_oop_nv(T* p); |
342 | 117 virtual void do_oop(oop* p) { do_oop_nv(p); } |
118 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
119 }; | |
120 | |
121 | |
122 class G1ParCopyHelper : public G1ParClosureSuper { | |
123 G1ParScanClosure *_scanner; | |
124 protected: | |
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
125 // Mark the object if it's not already marked. This is used to mark |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
126 // objects pointed to by roots that are guaranteed not to move |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
127 // during the GC (i.e., non-CSet objects). It is MT-safe. |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
128 void mark_object(oop obj); |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
129 |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
130 // Mark the object if it's not already marked. This is used to mark |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
131 // objects pointed to by roots that have been forwarded during a |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
132 // GC. It is MT-safe. |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
133 void mark_forwarded_object(oop from_obj, oop to_obj); |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
134 |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
135 oop copy_to_survivor_space(oop obj); |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
136 |
342 | 137 public: |
138 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | |
139 G1ParScanClosure *scanner) : | |
140 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | |
141 }; | |
142 | |
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
143 template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object> |
342 | 144 class G1ParCopyClosure : public G1ParCopyHelper { |
145 G1ParScanClosure _scanner; | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
146 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
147 template <class T> void do_oop_work(T* p); |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
148 |
342 | 149 public: |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
150 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
151 ReferenceProcessor* rp) : |
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
152 _scanner(g1, par_scan_state, rp), |
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
3983
diff
changeset
|
153 G1ParCopyHelper(g1, par_scan_state, &_scanner) { |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
154 assert(_ref_processor == NULL, "sanity"); |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
155 } |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
156 |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
157 G1ParScanClosure* scanner() { return &_scanner; } |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
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) { |
342 | 160 do_oop_work(p); |
161 } | |
162 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
163 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
164 }; | |
165 | |
1261 | 166 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; |
167 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
168 |
1261 | 169 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; |
170 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
171 |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
172 // The following closure types are no longer used but are retained |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
173 // for historical reasons: |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
174 // typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
175 // typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; |
1261 | 176 |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
177 // The following closure type is defined in g1_specialized_oop_closures.hpp: |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
178 // |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
179 // typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure; |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
180 |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
181 // We use a separate closure to handle references during evacuation |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
182 // failure processing. |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
183 // We could have used another instance of G1ParScanHeapEvacClosure |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
184 // (since that closure no longer assumes that the references it |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
185 // handles point into the collection set). |
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
186 |
1261 | 187 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure; |
342 | 188 |
189 class FilterIntoCSClosure: public OopClosure { | |
190 G1CollectedHeap* _g1; | |
191 OopClosure* _oc; | |
192 DirtyCardToOopClosure* _dcto_cl; | |
193 public: | |
194 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl, | |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
195 G1CollectedHeap* g1, |
3983
811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents:
3979
diff
changeset
|
196 OopClosure* oc) : |
811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents:
3979
diff
changeset
|
197 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) { } |
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
198 |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
199 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
|
200 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
|
201 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 202 bool apply_to_weak_ref_discovered_field() { return true; } |
203 bool do_header() { return false; } | |
204 }; | |
205 | |
206 class FilterOutOfRegionClosure: public OopClosure { | |
207 HeapWord* _r_bottom; | |
208 HeapWord* _r_end; | |
209 OopClosure* _oc; | |
210 int _out_of_region; | |
211 public: | |
212 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc); | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
579
diff
changeset
|
213 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
|
214 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
|
215 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
342 | 216 bool apply_to_weak_ref_discovered_field() { return true; } |
217 bool do_header() { return false; } | |
218 int out_of_region() { return _out_of_region; } | |
219 }; | |
1972 | 220 |
3771 | 221 // Closure for iterating over object fields during concurrent marking |
222 class G1CMOopClosure : public OopClosure { | |
4837
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
223 private: |
3771 | 224 G1CollectedHeap* _g1h; |
225 ConcurrentMark* _cm; | |
226 CMTask* _task; | |
227 public: | |
228 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task); | |
229 template <class T> void do_oop_nv(T* p); | |
230 virtual void do_oop( oop* p) { do_oop_nv(p); } | |
231 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
232 }; | |
233 | |
4837
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
234 // Closure to scan the root regions during concurrent marking |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
235 class G1RootRegionScanClosure : public OopClosure { |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
236 private: |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
237 G1CollectedHeap* _g1h; |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
238 ConcurrentMark* _cm; |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
239 uint _worker_id; |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
240 public: |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
241 G1RootRegionScanClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
242 uint worker_id) : |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
243 _g1h(g1h), _cm(cm), _worker_id(worker_id) { } |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
244 template <class T> void do_oop_nv(T* p); |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
245 virtual void do_oop( oop* p) { do_oop_nv(p); } |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
246 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
247 }; |
eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
4836
diff
changeset
|
248 |
4839 | 249 // Closure that applies the given two closures in sequence. |
250 // Used by the RSet refinement code (when updating RSets | |
251 // during an evacuation pause) to record cards containing | |
252 // pointers into the collection set. | |
253 | |
254 class G1Mux2Closure : public OopClosure { | |
255 OopClosure* _c1; | |
256 OopClosure* _c2; | |
257 public: | |
258 G1Mux2Closure(OopClosure *c1, OopClosure *c2); | |
259 template <class T> void do_oop_nv(T* p); | |
260 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
261 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
262 }; | |
263 | |
264 // A closure that returns true if it is actually applied | |
265 // to a reference | |
266 | |
267 class G1TriggerClosure : public OopClosure { | |
268 bool _triggered; | |
269 public: | |
270 G1TriggerClosure(); | |
271 bool triggered() const { return _triggered; } | |
272 template <class T> void do_oop_nv(T* p); | |
273 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
274 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
275 }; | |
276 | |
277 // A closure which uses a triggering closure to determine | |
278 // whether to apply an oop closure. | |
279 | |
280 class G1InvokeIfNotTriggeredClosure: public OopClosure { | |
281 G1TriggerClosure* _trigger_cl; | |
282 OopClosure* _oop_cl; | |
283 public: | |
284 G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc); | |
285 template <class T> void do_oop_nv(T* p); | |
286 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
287 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
288 }; | |
289 | |
290 class G1UpdateRSOrPushRefOopClosure: public OopClosure { | |
291 G1CollectedHeap* _g1; | |
292 G1RemSet* _g1_rem_set; | |
293 HeapRegion* _from; | |
294 OopsInHeapRegionClosure* _push_ref_cl; | |
295 bool _record_refs_into_cset; | |
296 int _worker_i; | |
297 | |
298 public: | |
299 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h, | |
300 G1RemSet* rs, | |
301 OopsInHeapRegionClosure* push_ref_cl, | |
302 bool record_refs_into_cset, | |
303 int worker_i = 0); | |
304 | |
305 void set_from(HeapRegion* from) { | |
306 assert(from != NULL, "from region must be non-NULL"); | |
307 _from = from; | |
308 } | |
309 | |
310 bool self_forwarded(oop obj) { | |
311 bool result = (obj->is_forwarded() && (obj->forwardee()== obj)); | |
312 return result; | |
313 } | |
314 | |
315 bool apply_to_weak_ref_discovered_field() { return true; } | |
316 | |
317 template <class T> void do_oop_nv(T* p); | |
318 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | |
319 virtual void do_oop(oop* p) { do_oop_nv(p); } | |
320 }; | |
321 | |
1972 | 322 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP |