Mercurial > hg > graal-jvmci-8
annotate src/share/vm/oops/oop.inline.hpp @ 24157:f4e6ddeb5b6f jvmci-0.31
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 19 Jul 2017 19:44:11 +0200 |
parents | b5f3a471e646 |
children | 0137da2b56d9 |
rev | line source |
---|---|
0 | 1 /* |
23614 | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
0 | 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:
845
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
845
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:
845
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OOPS_OOP_INLINE_HPP |
26 #define SHARE_VM_OOPS_OOP_INLINE_HPP | |
27 | |
28 #include "gc_implementation/shared/ageTable.hpp" | |
29 #include "gc_implementation/shared/markSweep.inline.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "memory/barrierSet.inline.hpp" | |
32 #include "memory/cardTableModRefBS.hpp" | |
33 #include "memory/genCollectedHeap.hpp" | |
34 #include "memory/generation.hpp" | |
35 #include "memory/specialized_oop_closures.hpp" | |
36 #include "oops/arrayKlass.hpp" | |
37 #include "oops/arrayOop.hpp" | |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
38 #include "oops/klass.inline.hpp" |
1972 | 39 #include "oops/markOop.inline.hpp" |
40 #include "oops/oop.hpp" | |
20197
ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
parents:
17937
diff
changeset
|
41 #include "runtime/atomic.inline.hpp" |
ce8f6bb717c9
8042195: Introduce umbrella header orderAccess.inline.hpp.
goetz
parents:
17937
diff
changeset
|
42 #include "runtime/orderAccess.inline.hpp" |
1972 | 43 #include "runtime/os.hpp" |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6848
diff
changeset
|
44 #include "utilities/macros.hpp" |
1972 | 45 #ifdef TARGET_ARCH_x86 |
46 # include "bytes_x86.hpp" | |
47 #endif | |
48 #ifdef TARGET_ARCH_sparc | |
49 # include "bytes_sparc.hpp" | |
50 #endif | |
51 #ifdef TARGET_ARCH_zero | |
52 # include "bytes_zero.hpp" | |
53 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
54 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
55 # include "bytes_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
56 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
57 #ifdef TARGET_ARCH_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
58 # include "bytes_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
59 #endif |
1972 | 60 |
0 | 61 // Implementation of all inlined member functions defined in oop.hpp |
62 // We need a separate file to avoid circular references | |
63 | |
64 inline void oopDesc::release_set_mark(markOop m) { | |
65 OrderAccess::release_store_ptr(&_mark, m); | |
66 } | |
67 | |
68 inline markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) { | |
69 return (markOop) Atomic::cmpxchg_ptr(new_mark, &_mark, old_mark); | |
70 } | |
71 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
72 inline Klass* oopDesc::klass() const { |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
73 if (UseCompressedClassPointers) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
74 return Klass::decode_klass_not_null(_metadata._compressed_klass); |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
75 } else { |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
76 return _metadata._klass; |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
77 } |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
78 } |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
79 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
80 inline Klass* oopDesc::klass_or_null() const volatile { |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
81 // can be NULL in CMS |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
82 if (UseCompressedClassPointers) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
83 return Klass::decode_klass(_metadata._compressed_klass); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
84 } else { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
85 return _metadata._klass; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
86 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
87 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
88 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
89 inline int oopDesc::klass_gap_offset_in_bytes() { |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
90 assert(UseCompressedClassPointers, "only applicable to compressed klass pointers"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
91 return oopDesc::klass_offset_in_bytes() + sizeof(narrowKlass); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
92 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
93 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
94 inline Klass** oopDesc::klass_addr() { |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
95 // Only used internally and with CMS and will not work with |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
96 // UseCompressedOops |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
97 assert(!UseCompressedClassPointers, "only supported with uncompressed klass pointers"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
98 return (Klass**) &_metadata._klass; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
99 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
100 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
101 inline narrowKlass* oopDesc::compressed_klass_addr() { |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
102 assert(UseCompressedClassPointers, "only called by compressed klass pointers"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
103 return &_metadata._compressed_klass; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
104 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
105 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
106 inline void oopDesc::set_klass(Klass* k) { |
0 | 107 // since klasses are promoted no store check is needed |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
108 assert(Universe::is_bootstrapping() || k != NULL, "must be a real Klass*"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
109 assert(Universe::is_bootstrapping() || k->is_klass(), "not a Klass*"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
110 if (UseCompressedClassPointers) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
111 *compressed_klass_addr() = Klass::encode_klass_not_null(k); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
112 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
113 *klass_addr() = k; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
114 } |
0 | 115 } |
116 | |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
117 inline int oopDesc::klass_gap() const { |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
118 return *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()); |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
119 } |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
120 |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
121 inline void oopDesc::set_klass_gap(int v) { |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
122 if (UseCompressedClassPointers) { |
167
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
123 *(int*)(((intptr_t)this) + klass_gap_offset_in_bytes()) = v; |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
124 } |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
125 } |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
coleenp
parents:
135
diff
changeset
|
126 |
0 | 127 inline void oopDesc::set_klass_to_list_ptr(oop k) { |
128 // This is only to be used during GC, for from-space objects, so no | |
129 // barrier is needed. | |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
130 if (UseCompressedClassPointers) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
131 _metadata._compressed_klass = (narrowKlass)encode_heap_oop(k); // may be null (parnew overflow handling) |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
132 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
133 _metadata._klass = (Klass*)(address)k; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
134 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
135 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
136 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
137 inline oop oopDesc::list_ptr_from_klass() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
138 // This is only to be used during GC, for from-space objects. |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12056
diff
changeset
|
139 if (UseCompressedClassPointers) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
8003
diff
changeset
|
140 return decode_heap_oop((narrowOop)_metadata._compressed_klass); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
141 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
142 // Special case for GC |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
143 return (oop)(address)_metadata._klass; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
144 } |
0 | 145 } |
146 | |
147 inline void oopDesc::init_mark() { set_mark(markOopDesc::prototype_for_object(this)); } | |
148 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
149 inline bool oopDesc::is_a(Klass* k) const { return klass()->is_subtype_of(k); } |
0 | 150 |
20262
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
151 inline bool oopDesc::is_instance() const { return klass()->oop_is_instance(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
152 inline bool oopDesc::is_instanceClassLoader() const { return klass()->oop_is_instanceClassLoader(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
153 inline bool oopDesc::is_instanceMirror() const { return klass()->oop_is_instanceMirror(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
154 inline bool oopDesc::is_instanceRef() const { return klass()->oop_is_instanceRef(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
155 inline bool oopDesc::is_array() const { return klass()->oop_is_array(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
156 inline bool oopDesc::is_objArray() const { return klass()->oop_is_objArray(); } |
76b588255908
8035746: Add missing Klass::oop_is_instanceClassLoader() function
stefank
parents:
20197
diff
changeset
|
157 inline bool oopDesc::is_typeArray() const { return klass()->oop_is_typeArray(); } |
0 | 158 |
159 inline void* oopDesc::field_base(int offset) const { return (void*)&((char*)this)[offset]; } | |
160 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
161 template <class T> inline T* oopDesc::obj_field_addr(int offset) const { return (T*)field_base(offset); } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
162 inline Metadata** oopDesc::metadata_field_addr(int offset) const { return (Metadata**)field_base(offset); } |
0 | 163 inline jbyte* oopDesc::byte_field_addr(int offset) const { return (jbyte*) field_base(offset); } |
164 inline jchar* oopDesc::char_field_addr(int offset) const { return (jchar*) field_base(offset); } | |
165 inline jboolean* oopDesc::bool_field_addr(int offset) const { return (jboolean*)field_base(offset); } | |
166 inline jint* oopDesc::int_field_addr(int offset) const { return (jint*) field_base(offset); } | |
167 inline jshort* oopDesc::short_field_addr(int offset) const { return (jshort*) field_base(offset); } | |
168 inline jlong* oopDesc::long_field_addr(int offset) const { return (jlong*) field_base(offset); } | |
169 inline jfloat* oopDesc::float_field_addr(int offset) const { return (jfloat*) field_base(offset); } | |
170 inline jdouble* oopDesc::double_field_addr(int offset) const { return (jdouble*) field_base(offset); } | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
171 inline address* oopDesc::address_field_addr(int offset) const { return (address*) field_base(offset); } |
0 | 172 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
173 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
174 // Functions for getting and setting oops within instance objects. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
175 // If the oops are compressed, the type passed to these overloaded functions |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
176 // is narrowOop. All functions are overloaded so they can be called by |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
177 // template functions without conditionals (the compiler instantiates via |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
178 // the right type and inlines the appopriate code). |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
179 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
180 inline bool oopDesc::is_null(oop obj) { return obj == NULL; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
181 inline bool oopDesc::is_null(narrowOop obj) { return obj == 0; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
182 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
183 // Algorithm for encoding and decoding oops from 64 bit pointers to 32 bit |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
184 // offset from the heap base. Saving the check for null can save instructions |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
185 // in inner GC loops so these are separated. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
186 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
187 inline bool check_obj_alignment(oop obj) { |
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12226
diff
changeset
|
188 return cast_from_oop<intptr_t>(obj) % MinObjAlignmentInBytes == 0; |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
189 } |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
190 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
191 inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
192 assert(!is_null(v), "oop value can never be zero"); |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
193 assert(check_obj_alignment(v), "Address not aligned"); |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
710
diff
changeset
|
194 assert(Universe::heap()->is_in_reserved(v), "Address not in heap"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
195 address base = Universe::narrow_oop_base(); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
196 int shift = Universe::narrow_oop_shift(); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
197 uint64_t pd = (uint64_t)(pointer_delta((void*)v, (void*)base, 1)); |
135
b7268662a986
6689523: max heap calculation for compressed oops is off by MaxPermSize
coleenp
parents:
133
diff
changeset
|
198 assert(OopEncodingHeapMax > pd, "change encoding max if new encoding"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
199 uint64_t result = pd >> shift; |
135
b7268662a986
6689523: max heap calculation for compressed oops is off by MaxPermSize
coleenp
parents:
133
diff
changeset
|
200 assert((result & CONST64(0xffffffff00000000)) == 0, "narrow oop overflow"); |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
710
diff
changeset
|
201 assert(decode_heap_oop(result) == v, "reversibility"); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
202 return (narrowOop)result; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
203 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
204 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
205 inline narrowOop oopDesc::encode_heap_oop(oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
206 return (is_null(v)) ? (narrowOop)0 : encode_heap_oop_not_null(v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
207 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
208 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
209 inline oop oopDesc::decode_heap_oop_not_null(narrowOop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
210 assert(!is_null(v), "narrow oop value can never be zero"); |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
211 address base = Universe::narrow_oop_base(); |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
518
diff
changeset
|
212 int shift = Universe::narrow_oop_shift(); |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
213 oop result = (oop)(void*)((uintptr_t)base + ((uintptr_t)v << shift)); |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
14443
diff
changeset
|
214 assert(check_obj_alignment(result), err_msg("address not aligned: " INTPTR_FORMAT, p2i((void*) result))); |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
215 return result; |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
216 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
217 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
218 inline oop oopDesc::decode_heap_oop(narrowOop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
219 return is_null(v) ? (oop)NULL : decode_heap_oop_not_null(v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
220 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
221 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
222 inline oop oopDesc::decode_heap_oop_not_null(oop v) { return v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
223 inline oop oopDesc::decode_heap_oop(oop v) { return v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
224 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
225 // Load an oop out of the Java heap as is without decoding. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
226 // Called by GC to check for null before decoding. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
227 inline oop oopDesc::load_heap_oop(oop* p) { return *p; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
228 inline narrowOop oopDesc::load_heap_oop(narrowOop* p) { return *p; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
229 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
230 // Load and decode an oop out of the Java heap into a wide oop. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
231 inline oop oopDesc::load_decode_heap_oop_not_null(oop* p) { return *p; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
232 inline oop oopDesc::load_decode_heap_oop_not_null(narrowOop* p) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
233 return decode_heap_oop_not_null(*p); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
234 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
235 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
236 // Load and decode an oop out of the heap accepting null |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
237 inline oop oopDesc::load_decode_heap_oop(oop* p) { return *p; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
238 inline oop oopDesc::load_decode_heap_oop(narrowOop* p) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
239 return decode_heap_oop(*p); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
240 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
241 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
242 // Store already encoded heap oop into the heap. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
243 inline void oopDesc::store_heap_oop(oop* p, oop v) { *p = v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
244 inline void oopDesc::store_heap_oop(narrowOop* p, narrowOop v) { *p = v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
245 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
246 // Encode and store a heap oop. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
247 inline void oopDesc::encode_store_heap_oop_not_null(narrowOop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
248 *p = encode_heap_oop_not_null(v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
249 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
250 inline void oopDesc::encode_store_heap_oop_not_null(oop* p, oop v) { *p = v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
251 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
252 // Encode and store a heap oop allowing for null. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
253 inline void oopDesc::encode_store_heap_oop(narrowOop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
254 *p = encode_heap_oop(v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
255 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
256 inline void oopDesc::encode_store_heap_oop(oop* p, oop v) { *p = v; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
257 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
258 // Store heap oop as is for volatile fields. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
259 inline void oopDesc::release_store_heap_oop(volatile oop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
260 OrderAccess::release_store_ptr(p, v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
261 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
262 inline void oopDesc::release_store_heap_oop(volatile narrowOop* p, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
263 narrowOop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
264 OrderAccess::release_store(p, v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
265 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
266 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
267 inline void oopDesc::release_encode_store_heap_oop_not_null( |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
268 volatile narrowOop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
269 // heap oop is not pointer sized. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
270 OrderAccess::release_store(p, encode_heap_oop_not_null(v)); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
271 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
272 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
273 inline void oopDesc::release_encode_store_heap_oop_not_null( |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
274 volatile oop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
275 OrderAccess::release_store_ptr(p, v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
276 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
277 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
278 inline void oopDesc::release_encode_store_heap_oop(volatile oop* p, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
279 oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
280 OrderAccess::release_store_ptr(p, v); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
281 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
282 inline void oopDesc::release_encode_store_heap_oop( |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
283 volatile narrowOop* p, oop v) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
284 OrderAccess::release_store(p, encode_heap_oop(v)); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
285 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
286 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
287 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
288 // These functions are only used to exchange oop fields in instances, |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
289 // not headers. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
290 inline oop oopDesc::atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
291 if (UseCompressedOops) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
292 // encode exchange value from oop to T |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
293 narrowOop val = encode_heap_oop(exchange_value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
294 narrowOop old = (narrowOop)Atomic::xchg(val, (narrowOop*)dest); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
295 // decode old from T to oop |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
296 return decode_heap_oop(old); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
297 } else { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
298 return (oop)Atomic::xchg_ptr(exchange_value, (oop*)dest); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
299 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
300 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
301 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
302 // In order to put or get a field out of an instance, must first check |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
303 // if the field has been compressed and uncompress it. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
304 inline oop oopDesc::obj_field(int offset) const { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
305 return UseCompressedOops ? |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
306 load_decode_heap_oop(obj_field_addr<narrowOop>(offset)) : |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
307 load_decode_heap_oop(obj_field_addr<oop>(offset)); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
308 } |
3932
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
309 inline volatile oop oopDesc::obj_field_volatile(int offset) const { |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
310 volatile oop value = obj_field(offset); |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
311 OrderAccess::acquire(); |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
312 return value; |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
313 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
314 inline void oopDesc::obj_field_put(int offset, oop value) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
315 UseCompressedOops ? oop_store(obj_field_addr<narrowOop>(offset), value) : |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
316 oop_store(obj_field_addr<oop>(offset), value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
317 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
318 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
319 inline Metadata* oopDesc::metadata_field(int offset) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
320 return *metadata_field_addr(offset); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
321 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
322 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
323 inline void oopDesc::metadata_field_put(int offset, Metadata* value) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
324 *metadata_field_addr(offset) = value; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
325 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
326 |
24157
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
327 inline void oopDesc::metadata_field_put_volatile(int offset, Metadata* value) { |
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
328 OrderAccess::release(); |
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
329 *metadata_field_addr(offset) = value; |
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
330 OrderAccess::fence(); |
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
331 } |
f4e6ddeb5b6f
race in field updates when creating ArrayKlasses can lead to crash (JDK-8182397)
Doug Simon <doug.simon@oracle.com>
parents:
23660
diff
changeset
|
332 |
3932
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
333 inline void oopDesc::obj_field_put_raw(int offset, oop value) { |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
334 UseCompressedOops ? |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
335 encode_store_heap_oop(obj_field_addr<narrowOop>(offset), value) : |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
336 encode_store_heap_oop(obj_field_addr<oop>(offset), value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
337 } |
3932
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
338 inline void oopDesc::obj_field_put_volatile(int offset, oop value) { |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
339 OrderAccess::release(); |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
340 obj_field_put(offset, value); |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
341 OrderAccess::fence(); |
b0efc7ee3b31
7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods
twisti
parents:
2376
diff
changeset
|
342 } |
0 | 343 |
344 inline jbyte oopDesc::byte_field(int offset) const { return (jbyte) *byte_field_addr(offset); } | |
345 inline void oopDesc::byte_field_put(int offset, jbyte contents) { *byte_field_addr(offset) = (jint) contents; } | |
346 | |
347 inline jboolean oopDesc::bool_field(int offset) const { return (jboolean) *bool_field_addr(offset); } | |
23614 | 348 inline void oopDesc::bool_field_put(int offset, jboolean contents) { *bool_field_addr(offset) = (( (jint) contents) & 1); } |
0 | 349 |
350 inline jchar oopDesc::char_field(int offset) const { return (jchar) *char_field_addr(offset); } | |
351 inline void oopDesc::char_field_put(int offset, jchar contents) { *char_field_addr(offset) = (jint) contents; } | |
352 | |
353 inline jint oopDesc::int_field(int offset) const { return *int_field_addr(offset); } | |
354 inline void oopDesc::int_field_put(int offset, jint contents) { *int_field_addr(offset) = contents; } | |
355 | |
356 inline jshort oopDesc::short_field(int offset) const { return (jshort) *short_field_addr(offset); } | |
357 inline void oopDesc::short_field_put(int offset, jshort contents) { *short_field_addr(offset) = (jint) contents;} | |
358 | |
359 inline jlong oopDesc::long_field(int offset) const { return *long_field_addr(offset); } | |
360 inline void oopDesc::long_field_put(int offset, jlong contents) { *long_field_addr(offset) = contents; } | |
361 | |
362 inline jfloat oopDesc::float_field(int offset) const { return *float_field_addr(offset); } | |
363 inline void oopDesc::float_field_put(int offset, jfloat contents) { *float_field_addr(offset) = contents; } | |
364 | |
365 inline jdouble oopDesc::double_field(int offset) const { return *double_field_addr(offset); } | |
366 inline void oopDesc::double_field_put(int offset, jdouble contents) { *double_field_addr(offset) = contents; } | |
367 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
368 inline address oopDesc::address_field(int offset) const { return *address_field_addr(offset); } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
369 inline void oopDesc::address_field_put(int offset, address contents) { *address_field_addr(offset) = contents; } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
370 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
371 inline oop oopDesc::obj_field_acquire(int offset) const { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
372 return UseCompressedOops ? |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
373 decode_heap_oop((narrowOop) |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
374 OrderAccess::load_acquire(obj_field_addr<narrowOop>(offset))) |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
375 : decode_heap_oop((oop) |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
376 OrderAccess::load_ptr_acquire(obj_field_addr<oop>(offset))); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
377 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
378 inline void oopDesc::release_obj_field_put(int offset, oop value) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
379 UseCompressedOops ? |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
380 oop_store((volatile narrowOop*)obj_field_addr<narrowOop>(offset), value) : |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
381 oop_store((volatile oop*) obj_field_addr<oop>(offset), value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
382 } |
0 | 383 |
384 inline jbyte oopDesc::byte_field_acquire(int offset) const { return OrderAccess::load_acquire(byte_field_addr(offset)); } | |
385 inline void oopDesc::release_byte_field_put(int offset, jbyte contents) { OrderAccess::release_store(byte_field_addr(offset), contents); } | |
386 | |
387 inline jboolean oopDesc::bool_field_acquire(int offset) const { return OrderAccess::load_acquire(bool_field_addr(offset)); } | |
23614 | 388 inline void oopDesc::release_bool_field_put(int offset, jboolean contents) { OrderAccess::release_store(bool_field_addr(offset), (contents & 1)); } |
0 | 389 |
390 inline jchar oopDesc::char_field_acquire(int offset) const { return OrderAccess::load_acquire(char_field_addr(offset)); } | |
391 inline void oopDesc::release_char_field_put(int offset, jchar contents) { OrderAccess::release_store(char_field_addr(offset), contents); } | |
392 | |
393 inline jint oopDesc::int_field_acquire(int offset) const { return OrderAccess::load_acquire(int_field_addr(offset)); } | |
394 inline void oopDesc::release_int_field_put(int offset, jint contents) { OrderAccess::release_store(int_field_addr(offset), contents); } | |
395 | |
396 inline jshort oopDesc::short_field_acquire(int offset) const { return (jshort)OrderAccess::load_acquire(short_field_addr(offset)); } | |
397 inline void oopDesc::release_short_field_put(int offset, jshort contents) { OrderAccess::release_store(short_field_addr(offset), contents); } | |
398 | |
399 inline jlong oopDesc::long_field_acquire(int offset) const { return OrderAccess::load_acquire(long_field_addr(offset)); } | |
400 inline void oopDesc::release_long_field_put(int offset, jlong contents) { OrderAccess::release_store(long_field_addr(offset), contents); } | |
401 | |
402 inline jfloat oopDesc::float_field_acquire(int offset) const { return OrderAccess::load_acquire(float_field_addr(offset)); } | |
403 inline void oopDesc::release_float_field_put(int offset, jfloat contents) { OrderAccess::release_store(float_field_addr(offset), contents); } | |
404 | |
405 inline jdouble oopDesc::double_field_acquire(int offset) const { return OrderAccess::load_acquire(double_field_addr(offset)); } | |
406 inline void oopDesc::release_double_field_put(int offset, jdouble contents) { OrderAccess::release_store(double_field_addr(offset), contents); } | |
407 | |
710 | 408 inline address oopDesc::address_field_acquire(int offset) const { return (address) OrderAccess::load_ptr_acquire(address_field_addr(offset)); } |
409 inline void oopDesc::release_address_field_put(int offset, address contents) { OrderAccess::release_store_ptr(address_field_addr(offset), contents); } | |
410 | |
0 | 411 inline int oopDesc::size_given_klass(Klass* klass) { |
412 int lh = klass->layout_helper(); | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
413 int s; |
0 | 414 |
415 // lh is now a value computed at class initialization that may hint | |
416 // at the size. For instances, this is positive and equal to the | |
417 // size. For arrays, this is negative and provides log2 of the | |
418 // array element size. For other oops, it is zero and thus requires | |
419 // a virtual call. | |
420 // | |
421 // We go to all this trouble because the size computation is at the | |
422 // heart of phase 2 of mark-compaction, and called for every object, | |
423 // alive or dead. So the speed here is equal in importance to the | |
424 // speed of allocation. | |
425 | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
426 if (lh > Klass::_lh_neutral_value) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
427 if (!Klass::layout_helper_needs_slow_path(lh)) { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
428 s = lh >> LogHeapWordSize; // deliver size scaled by wordSize |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
429 } else { |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
430 s = klass->oop_size(this); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
431 } |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2192
diff
changeset
|
432 } else if (lh <= Klass::_lh_neutral_value) { |
0 | 433 // The most common case is instances; fall through if so. |
434 if (lh < Klass::_lh_neutral_value) { | |
435 // Second most common case is arrays. We have to fetch the | |
436 // length of the array, shift (multiply) it appropriately, | |
437 // up to wordSize, add the header, and align to object size. | |
438 size_t size_in_bytes; | |
439 #ifdef _M_IA64 | |
440 // The Windows Itanium Aug 2002 SDK hoists this load above | |
441 // the check for s < 0. An oop at the end of the heap will | |
442 // cause an access violation if this load is performed on a non | |
443 // array oop. Making the reference volatile prohibits this. | |
444 // (%%% please explain by what magic the length is actually fetched!) | |
445 volatile int *array_length; | |
446 array_length = (volatile int *)( (intptr_t)this + | |
447 arrayOopDesc::length_offset_in_bytes() ); | |
448 assert(array_length > 0, "Integer arithmetic problem somewhere"); | |
449 // Put into size_t to avoid overflow. | |
450 size_in_bytes = (size_t) array_length; | |
451 size_in_bytes = size_in_bytes << Klass::layout_helper_log2_element_size(lh); | |
452 #else | |
453 size_t array_length = (size_t) ((arrayOop)this)->length(); | |
454 size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh); | |
455 #endif | |
456 size_in_bytes += Klass::layout_helper_header_size(lh); | |
457 | |
458 // This code could be simplified, but by keeping array_header_in_bytes | |
459 // in units of bytes and doing it this way we can round up just once, | |
460 // skipping the intermediate round to HeapWordSize. Cast the result | |
461 // of round_to to size_t to guarantee unsigned division == right shift. | |
462 s = (int)((size_t)round_to(size_in_bytes, MinObjAlignmentInBytes) / | |
463 HeapWordSize); | |
464 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
465 // UseParNewGC, UseParallelGC and UseG1GC can change the length field |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
466 // of an "old copy" of an object array in the young gen so it indicates |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
467 // the grey portion of an already copied array. This will cause the first |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
468 // disjunct below to fail if the two comparands are computed across such |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
469 // a concurrent change. |
0 | 470 // UseParNewGC also runs with promotion labs (which look like int |
471 // filler arrays) which are subject to changing their declared size | |
472 // when finally retiring a PLAB; this also can cause the first disjunct | |
473 // to fail for another worker thread that is concurrently walking the block | |
474 // offset table. Both these invariant failures are benign for their | |
475 // current uses; we relax the assertion checking to cover these two cases below: | |
476 // is_objArray() && is_forwarded() // covers first scenario above | |
477 // || is_typeArray() // covers second scenario above | |
478 // If and when UseParallelGC uses the same obj array oop stealing/chunking | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
479 // technique, we will need to suitably modify the assertion. |
0 | 480 assert((s == klass->oop_size(this)) || |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
481 (Universe::heap()->is_gc_active() && |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
482 ((is_typeArray() && UseParNewGC) || |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
483 (is_objArray() && is_forwarded() && (UseParNewGC || UseParallelGC || UseG1GC)))), |
0 | 484 "wrong array object size"); |
485 } else { | |
486 // Must be zero, so bite the bullet and take the virtual call. | |
487 s = klass->oop_size(this); | |
488 } | |
489 } | |
490 | |
491 assert(s % MinObjAlignment == 0, "alignment check"); | |
492 assert(s > 0, "Bad size calculated"); | |
493 return s; | |
494 } | |
495 | |
496 | |
497 inline int oopDesc::size() { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
498 return size_given_klass(klass()); |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
454
diff
changeset
|
499 } |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
454
diff
changeset
|
500 |
14443
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
501 inline void update_barrier_set(void* p, oop v, bool release = false) { |
0 | 502 assert(oopDesc::bs() != NULL, "Uninitialized bs in oop!"); |
14443
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
503 oopDesc::bs()->write_ref_field(p, v, release); |
0 | 504 } |
505 | |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
710
diff
changeset
|
506 template <class T> inline void update_barrier_set_pre(T* p, oop v) { |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
507 oopDesc::bs()->write_ref_field_pre(p, v); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
508 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
509 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
510 template <class T> inline void oop_store(T* p, oop v) { |
0 | 511 if (always_do_update_barrier) { |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
512 oop_store((volatile T*)p, v); |
0 | 513 } else { |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
514 update_barrier_set_pre(p, v); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
515 oopDesc::encode_store_heap_oop(p, v); |
14443
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
516 // always_do_update_barrier == false => |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
517 // Either we are at a safepoint (in GC) or CMS is not used. In both |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
518 // cases it's unnecessary to mark the card as dirty with release sematics. |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
519 update_barrier_set((void*)p, v, false /* release */); // cast away type |
0 | 520 } |
521 } | |
522 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
523 template <class T> inline void oop_store(volatile T* p, oop v) { |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
710
diff
changeset
|
524 update_barrier_set_pre((T*)p, v); // cast away volatile |
0 | 525 // Used by release_obj_field_put, so use release_store_ptr. |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
526 oopDesc::release_encode_store_heap_oop(p, v); |
14443
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
527 // When using CMS we must mark the card corresponding to p as dirty |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
528 // with release sematics to prevent that CMS sees the dirty card but |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
529 // not the new value v at p due to reordering of the two |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
530 // stores. Note that CMS has a concurrent precleaning phase, where |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
531 // it reads the card table while the Java threads are running. |
3205e78d8193
8029396: PPC64 (part 212): Several memory ordering fixes in C-code.
goetz
parents:
12316
diff
changeset
|
532 update_barrier_set((void*)p, v, true /* release */); // cast away type |
0 | 533 } |
534 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
535 // Should replace *addr = oop assignments where addr type depends on UseCompressedOops |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
536 // (without having to remember the function name this calls). |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
537 inline void oop_store_raw(HeapWord* addr, oop value) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
538 if (UseCompressedOops) { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
539 oopDesc::encode_store_heap_oop((narrowOop*)addr, value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
540 } else { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
541 oopDesc::encode_store_heap_oop((oop*)addr, value); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
542 } |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
543 } |
0 | 544 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
545 inline oop oopDesc::atomic_compare_exchange_oop(oop exchange_value, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
546 volatile HeapWord *dest, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
547 oop compare_value, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
548 bool prebarrier) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
549 if (UseCompressedOops) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
550 if (prebarrier) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
551 update_barrier_set_pre((narrowOop*)dest, exchange_value); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
552 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
553 // encode exchange and compare value from oop to T |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
554 narrowOop val = encode_heap_oop(exchange_value); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
555 narrowOop cmp = encode_heap_oop(compare_value); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
556 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
557 narrowOop old = (narrowOop) Atomic::cmpxchg(val, (narrowOop*)dest, cmp); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
558 // decode old from T to oop |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
559 return decode_heap_oop(old); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
560 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
561 if (prebarrier) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
562 update_barrier_set_pre((oop*)dest, exchange_value); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
563 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
564 return (oop)Atomic::cmpxchg_ptr(exchange_value, (oop*)dest, compare_value); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
565 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
566 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
567 |
0 | 568 // Used only for markSweep, scavenging |
569 inline bool oopDesc::is_gc_marked() const { | |
570 return mark()->is_marked(); | |
571 } | |
572 | |
573 inline bool oopDesc::is_locked() const { | |
574 return mark()->is_locked(); | |
575 } | |
576 | |
577 inline bool oopDesc::is_unlocked() const { | |
578 return mark()->is_unlocked(); | |
579 } | |
580 | |
581 inline bool oopDesc::has_bias_pattern() const { | |
582 return mark()->has_bias_pattern(); | |
583 } | |
584 | |
585 | |
586 // used only for asserts | |
587 inline bool oopDesc::is_oop(bool ignore_mark_word) const { | |
588 oop obj = (oop) this; | |
589 if (!check_obj_alignment(obj)) return false; | |
590 if (!Universe::heap()->is_in_reserved(obj)) return false; | |
591 // obj is aligned and accessible in heap | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
592 if (Universe::heap()->is_in_reserved(obj->klass_or_null())) return false; |
0 | 593 |
594 // Header verification: the mark is typically non-NULL. If we're | |
595 // at a safepoint, it must not be null. | |
596 // Outside of a safepoint, the header could be changing (for example, | |
597 // another thread could be inflating a lock on this object). | |
598 if (ignore_mark_word) { | |
599 return true; | |
600 } | |
601 if (mark() != NULL) { | |
602 return true; | |
603 } | |
604 return !SafepointSynchronize::is_at_safepoint(); | |
605 } | |
606 | |
607 | |
608 // used only for asserts | |
609 inline bool oopDesc::is_oop_or_null(bool ignore_mark_word) const { | |
610 return this == NULL ? true : is_oop(ignore_mark_word); | |
611 } | |
612 | |
613 #ifndef PRODUCT | |
614 // used only for asserts | |
615 inline bool oopDesc::is_unlocked_oop() const { | |
616 if (!Universe::heap()->is_in_reserved(this)) return false; | |
617 return mark()->is_unlocked(); | |
618 } | |
619 #endif // PRODUCT | |
620 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
621 inline void oopDesc::follow_contents(void) { |
0 | 622 assert (is_gc_marked(), "should be marked"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
623 klass()->oop_follow_contents(this); |
0 | 624 } |
625 | |
626 // Used by scavengers | |
627 | |
628 inline bool oopDesc::is_forwarded() const { | |
629 // The extra heap check is needed since the obj might be locked, in which case the | |
630 // mark would point to a stack location and have the sentinel bit cleared | |
631 return mark()->is_marked(); | |
632 } | |
633 | |
634 // Used by scavengers | |
635 inline void oopDesc::forward_to(oop p) { | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
636 assert(check_obj_alignment(p), |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
637 "forwarding to something not aligned"); |
0 | 638 assert(Universe::heap()->is_in_reserved(p), |
639 "forwarding to something not in heap"); | |
640 markOop m = markOopDesc::encode_pointer_as_mark(p); | |
641 assert(m->decode_pointer() == p, "encoding must be reversable"); | |
642 set_mark(m); | |
643 } | |
644 | |
645 // Used by parallel scavengers | |
646 inline bool oopDesc::cas_forward_to(oop p, markOop compare) { | |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
647 assert(check_obj_alignment(p), |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
845
diff
changeset
|
648 "forwarding to something not aligned"); |
0 | 649 assert(Universe::heap()->is_in_reserved(p), |
650 "forwarding to something not in heap"); | |
651 markOop m = markOopDesc::encode_pointer_as_mark(p); | |
652 assert(m->decode_pointer() == p, "encoding must be reversable"); | |
653 return cas_set_mark(m, compare) == compare; | |
654 } | |
655 | |
656 // Note that the forwardee is not the same thing as the displaced_mark. | |
657 // The forwardee is used when copying during scavenge and mark-sweep. | |
658 // It does need to clear the low two locking- and GC-related bits. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
659 inline oop oopDesc::forwardee() const { |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
660 return (oop) mark()->decode_pointer(); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
661 } |
0 | 662 |
663 inline bool oopDesc::has_displaced_mark() const { | |
664 return mark()->has_displaced_mark_helper(); | |
665 } | |
666 | |
667 inline markOop oopDesc::displaced_mark() const { | |
668 return mark()->displaced_mark_helper(); | |
669 } | |
670 | |
671 inline void oopDesc::set_displaced_mark(markOop m) { | |
672 mark()->set_displaced_mark_helper(m); | |
673 } | |
674 | |
675 // The following method needs to be MT safe. | |
6818 | 676 inline uint oopDesc::age() const { |
0 | 677 assert(!is_forwarded(), "Attempt to read age from forwarded mark"); |
678 if (has_displaced_mark()) { | |
679 return displaced_mark()->age(); | |
680 } else { | |
681 return mark()->age(); | |
682 } | |
683 } | |
684 | |
685 inline void oopDesc::incr_age() { | |
686 assert(!is_forwarded(), "Attempt to increment age of forwarded mark"); | |
687 if (has_displaced_mark()) { | |
688 set_displaced_mark(displaced_mark()->incr_age()); | |
689 } else { | |
690 set_mark(mark()->incr_age()); | |
691 } | |
692 } | |
693 | |
694 | |
695 inline intptr_t oopDesc::identity_hash() { | |
696 // Fast case; if the object is unlocked and the hash value is set, no locking is needed | |
697 // Note: The mark must be read into local variable to avoid concurrent updates. | |
698 markOop mrk = mark(); | |
699 if (mrk->is_unlocked() && !mrk->has_no_hash()) { | |
700 return mrk->hash(); | |
701 } else if (mrk->is_marked()) { | |
702 return mrk->hash(); | |
703 } else { | |
704 return slow_identity_hash(); | |
705 } | |
706 } | |
707 | |
708 inline int oopDesc::adjust_pointers() { | |
709 debug_only(int check_size = size()); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
710 int s = klass()->oop_adjust_pointers(this); |
0 | 711 assert(s == check_size, "should be the same"); |
712 return s; | |
713 } | |
714 | |
715 #define OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ | |
716 \ | |
717 inline int oopDesc::oop_iterate(OopClosureType* blk) { \ | |
718 SpecializationStats::record_call(); \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
719 return klass()->oop_oop_iterate##nv_suffix(this, blk); \ |
0 | 720 } \ |
721 \ | |
722 inline int oopDesc::oop_iterate(OopClosureType* blk, MemRegion mr) { \ | |
723 SpecializationStats::record_call(); \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
724 return klass()->oop_oop_iterate##nv_suffix##_m(this, blk, mr); \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
725 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
726 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
727 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
728 inline int oopDesc::oop_iterate_no_header(OopClosure* blk) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
729 // The NoHeaderExtendedOopClosure wraps the OopClosure and proxies all |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
730 // the do_oop calls, but turns off all other features in ExtendedOopClosure. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
731 NoHeaderExtendedOopClosure cl(blk); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
732 return oop_iterate(&cl); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
733 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
734 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
735 inline int oopDesc::oop_iterate_no_header(OopClosure* blk, MemRegion mr) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
736 NoHeaderExtendedOopClosure cl(blk); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
737 return oop_iterate(&cl, mr); |
0 | 738 } |
739 | |
740 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DEFN) | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
741 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_DEFN) |
0 | 742 |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6848
diff
changeset
|
743 #if INCLUDE_ALL_GCS |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
744 #define OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
745 \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
746 inline int oopDesc::oop_iterate_backwards(OopClosureType* blk) { \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
747 SpecializationStats::record_call(); \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3932
diff
changeset
|
748 return klass()->oop_oop_iterate_backwards##nv_suffix(this, blk); \ |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
749 } |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
750 |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
751 ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DEFN) |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
752 ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DEFN) |
8001
db9981fd3124
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
jprovino
parents:
6848
diff
changeset
|
753 #endif // INCLUDE_ALL_GCS |
0 | 754 |
1972 | 755 #endif // SHARE_VM_OOPS_OOP_INLINE_HPP |