Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 12343:d55c004e1d4d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8025305: Cleanup CardTableModRefBS usage in G1 Summary: Move some G1 specific code from CardTableModRefBS to G1SATBCardTableModRefBS. Reviewed-by: brutisso, tschatzl, ehelin
author mgerdin
date Tue, 24 Sep 2013 14:46:29 +0200
parents da91efe96a93
children 190899198332
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
24
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1861
diff changeset
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1861
diff changeset
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1861
diff changeset
27
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
28 class HeapRegion;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
29 class G1CollectedHeap;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
30 class G1RemSet;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
31 class ConcurrentMark;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
32 class DirtyCardToOopClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
33 class CMBitMap;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
34 class CMMarkStack;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
35 class G1ParScanThreadState;
3771
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
36 class CMTask;
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
37 class ReferenceProcessor;
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
38
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
39 // A class that scans oops in a given heap region (much as OopsInGenClosure
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
40 // scans oops in a generation.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
41 class OopsInHeapRegionClosure: public OopsInGenClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
42 protected:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
43 HeapRegion* _from;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
46 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
47
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
48 class G1ParClosureSuper : public OopsInHeapRegionClosure {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
49 protected:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
50 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
51 G1RemSet* _g1_rem;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
52 ConcurrentMark* _cm;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
57 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
58 G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
59 bool apply_to_weak_ref_discovered_field() { return true; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
60 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
61
1261
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
62 class G1ParPushHeapRSClosure : public G1ParClosureSuper {
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
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
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
68 template <class T> void do_oop_nv(T* p);
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
69 virtual void do_oop(oop* p) { do_oop_nv(p); }
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
70 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
71 };
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
72
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
73 class G1ParScanClosure : public G1ParClosureSuper {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
83 virtual void do_oop(oop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
84 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
85 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
91 }
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
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
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
96 }
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
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
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
100 }
818efdefcc99 6484956: G1: improve evacuation pause efficiency
tonyp
parents: 342
diff changeset
101
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
102 class G1ParScanPartialArrayClosure : public G1ParClosureSuper {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
103 G1ParScanClosure _scanner;
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
104
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
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
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
117 virtual void do_oop(oop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
118 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
119 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
120
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
121 // Add back base class for metadata
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
122 class G1ParCopyHelper : public G1ParClosureSuper {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
123 Klass* _scanned_klass;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
124
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
125 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
126 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
127 _scanned_klass(NULL),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
128 G1ParClosureSuper(g1, par_scan_state) {}
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
129
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
130 void set_scanned_klass(Klass* k) { _scanned_klass = k; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
131 template <class T> void do_klass_barrier(T* p, oop new_obj);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
132 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
133
5987
748051fd24ce 7130974: G1: Remove G1ParCopyHelper
brutisso
parents: 4839
diff changeset
134 template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
135 class G1ParCopyClosure : public G1ParCopyHelper {
5987
748051fd24ce 7130974: G1: Remove G1ParCopyHelper
brutisso
parents: 4839
diff changeset
136 G1ParScanClosure _scanner;
748051fd24ce 7130974: G1: Remove G1ParCopyHelper
brutisso
parents: 4839
diff changeset
137 template <class T> void do_oop_work(T* p);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
138
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
139 protected:
4787
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
140 // 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
141 // 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
142 // 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
143 void mark_object(oop obj);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
144
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
145 // 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
146 // 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
147 // GC. It is MT-safe.
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
148 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
149
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
150 oop copy_to_survivor_space(oop obj);
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
151
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
152 public:
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
153 G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state,
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
154 ReferenceProcessor* rp) :
4787
2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents: 3983
diff changeset
155 _scanner(g1, par_scan_state, rp),
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
156 G1ParCopyHelper(g1, par_scan_state) {
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
157 assert(_ref_processor == NULL, "sanity");
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
158 }
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
159
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
160 G1ParScanClosure* scanner() { return &_scanner; }
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
161
845
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 579
diff changeset
162 template <class T> void do_oop_nv(T* p) {
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
163 do_oop_work(p);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
164 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
165 virtual void do_oop(oop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
166 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
167 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
168
1261
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
169 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
170 typedef G1ParCopyClosure<false, G1BarrierKlass, false> G1ParScanMetadataClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
171
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
172
1261
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
173 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
174 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
175 typedef G1ParCopyClosure<false, G1BarrierKlass, true> G1ParScanAndMarkMetadataClosure;
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
176
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
177 // The following closure types are no longer used but are retained
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
178 // for historical reasons:
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
179 // typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure;
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
180 // typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure;
1261
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
181
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
182 // 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
183 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
184 // typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
185
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
186 // We use a separate closure to handle references during evacuation
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
187 // failure processing.
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
188 // We could have used another instance of G1ParScanHeapEvacClosure
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
189 // (since that closure no longer assumes that the references it
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
190 // handles point into the collection set).
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
191
1261
0414c1049f15 6923991: G1: improve scalability of RSet scanning
iveresov
parents: 845
diff changeset
192 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
193
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
194 class FilterIntoCSClosure: public ExtendedOopClosure {
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
195 G1CollectedHeap* _g1;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
196 OopClosure* _oc;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
197 DirtyCardToOopClosure* _dcto_cl;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
198 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
199 FilterIntoCSClosure( DirtyCardToOopClosure* dcto_cl,
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
200 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
201 OopClosure* oc) :
811ec3d0833b 7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents: 3979
diff changeset
202 _dcto_cl(dcto_cl), _g1(g1), _oc(oc) { }
3979
4dfb2df418f2 6484982: G1: process references during evacuation pauses
johnc
parents: 3973
diff changeset
203
845
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 579
diff changeset
204 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
205 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
206 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
207 bool apply_to_weak_ref_discovered_field() { return true; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
208 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
209
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
210 class FilterOutOfRegionClosure: public ExtendedOopClosure {
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
211 HeapWord* _r_bottom;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
212 HeapWord* _r_end;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
213 OopClosure* _oc;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
214 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
215 FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc);
845
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents: 579
diff changeset
216 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
217 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
218 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
219 bool apply_to_weak_ref_discovered_field() { return true; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
220 };
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1861
diff changeset
221
3771
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
222 // Closure for iterating over object fields during concurrent marking
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
223 class G1CMOopClosure : public ExtendedOopClosure {
4837
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
224 private:
3771
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
225 G1CollectedHeap* _g1h;
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
226 ConcurrentMark* _cm;
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
227 CMTask* _task;
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
228 public:
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
229 G1CMOopClosure(G1CollectedHeap* g1h, ConcurrentMark* cm, CMTask* task);
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
230 template <class T> void do_oop_nv(T* p);
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
231 virtual void do_oop( oop* p) { do_oop_nv(p); }
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
232 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
233 };
842b840e67db 7046558: G1: concurrent marking optimizations
tonyp
parents: 3765
diff changeset
234
4837
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
235 // Closure to scan the root regions during concurrent marking
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
236 class G1RootRegionScanClosure : public ExtendedOopClosure {
4837
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
237 private:
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
238 G1CollectedHeap* _g1h;
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
239 ConcurrentMark* _cm;
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
240 uint _worker_id;
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
241 public:
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
242 G1RootRegionScanClosure(G1CollectedHeap* g1h, ConcurrentMark* cm,
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
243 uint worker_id) :
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
244 _g1h(g1h), _cm(cm), _worker_id(worker_id) { }
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
245 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
246 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
247 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
248 };
eff609af17d7 7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents: 4836
diff changeset
249
4839
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
250 // Closure that applies the given two closures in sequence.
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
251 // Used by the RSet refinement code (when updating RSets
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
252 // during an evacuation pause) to record cards containing
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
253 // pointers into the collection set.
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
254
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
255 class G1Mux2Closure : public ExtendedOopClosure {
4839
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
256 OopClosure* _c1;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
257 OopClosure* _c2;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
258 public:
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
259 G1Mux2Closure(OopClosure *c1, OopClosure *c2);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
260 template <class T> void do_oop_nv(T* p);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
261 virtual void do_oop(oop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
262 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
263 };
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
264
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
265 // A closure that returns true if it is actually applied
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
266 // to a reference
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
267
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
268 class G1TriggerClosure : public ExtendedOopClosure {
4839
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
269 bool _triggered;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
270 public:
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
271 G1TriggerClosure();
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
272 bool triggered() const { return _triggered; }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
273 template <class T> void do_oop_nv(T* p);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
274 virtual void do_oop(oop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
275 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
276 };
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
277
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
278 // A closure which uses a triggering closure to determine
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
279 // whether to apply an oop closure.
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
280
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
281 class G1InvokeIfNotTriggeredClosure: public ExtendedOopClosure {
4839
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
282 G1TriggerClosure* _trigger_cl;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
283 OopClosure* _oop_cl;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
284 public:
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
285 G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
286 template <class T> void do_oop_nv(T* p);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
287 virtual void do_oop(oop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
288 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
289 };
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
290
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6254
diff changeset
291 class G1UpdateRSOrPushRefOopClosure: public ExtendedOopClosure {
4839
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
292 G1CollectedHeap* _g1;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
293 G1RemSet* _g1_rem_set;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
294 HeapRegion* _from;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
295 OopsInHeapRegionClosure* _push_ref_cl;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
296 bool _record_refs_into_cset;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
297 int _worker_i;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
298
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
299 public:
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
300 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h,
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
301 G1RemSet* rs,
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
302 OopsInHeapRegionClosure* push_ref_cl,
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
303 bool record_refs_into_cset,
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
304 int worker_i = 0);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
305
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
306 void set_from(HeapRegion* from) {
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
307 assert(from != NULL, "from region must be non-NULL");
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
308 _from = from;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
309 }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
310
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
311 bool self_forwarded(oop obj) {
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
312 bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
313 return result;
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
314 }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
315
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
316 bool apply_to_weak_ref_discovered_field() { return true; }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
317
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
318 template <class T> void do_oop_nv(T* p);
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
319 virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
320 virtual void do_oop(oop* p) { do_oop_nv(p); }
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
321 };
b4ebad3520bb 7133038: G1: Some small profile based optimizations
johnc
parents: 4837
diff changeset
322
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1861
diff changeset
323 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_HPP