Mercurial > hg > truffle
annotate src/share/vm/ci/ciInstanceKlass.hpp @ 2491:0654ee04b214
Merge with OpenJDK.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Fri, 22 Apr 2011 15:30:53 +0200 |
| parents | 06f017f7daa7 |
| children | 46f211fe010c |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
2 * Copyright (c) 1999, 2010, 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:
1138
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
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:
1138
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CI_CIINSTANCEKLASS_HPP |
| 26 #define SHARE_VM_CI_CIINSTANCEKLASS_HPP | |
| 27 | |
| 28 #include "ci/ciConstantPoolCache.hpp" | |
| 29 #include "ci/ciFlags.hpp" | |
| 30 #include "ci/ciInstanceKlassKlass.hpp" | |
| 31 #include "ci/ciKlass.hpp" | |
| 32 #include "ci/ciSymbol.hpp" | |
| 33 | |
| 0 | 34 // ciInstanceKlass |
| 35 // | |
| 36 // This class represents a klassOop in the HotSpot virtual machine | |
| 37 // whose Klass part is an instanceKlass. It may or may not | |
| 38 // be loaded. | |
| 39 class ciInstanceKlass : public ciKlass { | |
| 40 CI_PACKAGE_ACCESS | |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
41 friend class ciBytecodeStream; |
| 0 | 42 friend class ciEnv; |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
43 friend class ciExceptionHandler; |
| 0 | 44 friend class ciMethod; |
| 45 friend class ciField; | |
| 46 | |
| 47 private: | |
| 48 jobject _loader; | |
| 49 jobject _protection_domain; | |
| 50 | |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
51 instanceKlass::ClassState _init_state; // state of class |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
52 bool _is_shared; |
| 0 | 53 bool _has_finalizer; |
| 54 bool _has_subklass; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
55 bool _has_nonstatic_fields; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
56 |
| 0 | 57 ciFlags _flags; |
| 58 jint _nonstatic_field_size; | |
|
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
59 jint _nonstatic_oop_map_size; |
| 0 | 60 |
| 61 // Lazy fields get filled in only upon request. | |
| 62 ciInstanceKlass* _super; | |
| 63 ciInstance* _java_mirror; | |
| 64 | |
| 65 ciConstantPoolCache* _field_cache; // cached map index->field | |
| 66 GrowableArray<ciField*>* _nonstatic_fields; | |
| 67 | |
| 68 enum { implementors_limit = instanceKlass::implementors_limit }; | |
| 69 ciInstanceKlass* _implementors[implementors_limit]; | |
| 70 jint _nof_implementors; | |
| 71 | |
|
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
72 GrowableArray<ciField*>* _non_static_fields; |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
73 |
|
1478
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
74 public: |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
75 virtual void cleanup() { |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
76 ciObject::cleanup(); |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
77 if (!_is_shared) { |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
78 if (JNIHandles::is_global_handle(_loader)) { |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
79 JNIHandles::destroy_global(_loader); |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
80 } |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
81 if (JNIHandles::is_global_handle(_protection_domain)) { |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
82 JNIHandles::destroy_global(_protection_domain); |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
83 } |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
84 } |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
85 } |
|
5571b97fc1ec
More JNI global handle clean ups.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1138
diff
changeset
|
86 |
| 0 | 87 protected: |
| 88 ciInstanceKlass(KlassHandle h_k); | |
| 89 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); | |
| 90 | |
| 91 instanceKlass* get_instanceKlass() const { | |
| 92 return (instanceKlass*)get_Klass(); | |
| 93 } | |
| 94 | |
| 95 oop loader(); | |
| 96 jobject loader_handle(); | |
| 97 | |
| 98 oop protection_domain(); | |
| 99 jobject protection_domain_handle(); | |
| 100 | |
| 101 const char* type_string() { return "ciInstanceKlass"; } | |
| 102 | |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
103 bool is_in_package_impl(const char* packagename, int len); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
104 |
| 0 | 105 void print_impl(outputStream* st); |
| 106 | |
| 107 ciConstantPoolCache* field_cache(); | |
| 108 | |
| 109 bool is_shared() { return _is_shared; } | |
| 110 | |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
111 void compute_shared_init_state(); |
| 0 | 112 bool compute_shared_has_subklass(); |
| 113 int compute_shared_nof_implementors(); | |
| 114 int compute_nonstatic_fields(); | |
| 115 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); | |
| 116 | |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
117 // Update the init_state for shared klasses |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
118 void update_if_shared(instanceKlass::ClassState expected) { |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
119 if (_is_shared && _init_state != expected) { |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
120 if (is_loaded()) compute_shared_init_state(); |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
121 } |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
122 } |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
123 |
| 0 | 124 public: |
| 125 // Has this klass been initialized? | |
| 126 bool is_initialized() { | |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
127 update_if_shared(instanceKlass::fully_initialized); |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
128 return _init_state == instanceKlass::fully_initialized; |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
129 } |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
130 // Is this klass being initialized? |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
131 bool is_being_initialized() { |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
132 update_if_shared(instanceKlass::being_initialized); |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
133 return _init_state == instanceKlass::being_initialized; |
| 0 | 134 } |
| 135 // Has this klass been linked? | |
| 136 bool is_linked() { | |
|
1645
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
137 update_if_shared(instanceKlass::linked); |
|
3941674cc7fa
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
1552
diff
changeset
|
138 return _init_state >= instanceKlass::linked; |
| 0 | 139 } |
| 140 | |
| 141 // General klass information. | |
| 142 ciFlags flags() { | |
| 143 assert(is_loaded(), "must be loaded"); | |
| 144 return _flags; | |
| 145 } | |
| 146 bool has_finalizer() { | |
| 147 assert(is_loaded(), "must be loaded"); | |
| 148 return _has_finalizer; } | |
| 149 bool has_subklass() { | |
| 150 assert(is_loaded(), "must be loaded"); | |
| 151 if (_is_shared && !_has_subklass) { | |
| 152 if (flags().is_final()) { | |
| 153 return false; | |
| 154 } else { | |
| 155 return compute_shared_has_subklass(); | |
| 156 } | |
| 157 } | |
| 158 return _has_subklass; | |
| 159 } | |
| 160 jint size_helper() { | |
| 161 return (Klass::layout_helper_size_in_bytes(layout_helper()) | |
| 162 >> LogHeapWordSize); | |
| 163 } | |
| 164 jint nonstatic_field_size() { | |
| 165 assert(is_loaded(), "must be loaded"); | |
| 166 return _nonstatic_field_size; } | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
167 jint has_nonstatic_fields() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
168 assert(is_loaded(), "must be loaded"); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
169 return _has_nonstatic_fields; } |
|
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
170 jint nonstatic_oop_map_size() { |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
171 assert(is_loaded(), "must be loaded"); |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
172 return _nonstatic_oop_map_size; } |
| 0 | 173 ciInstanceKlass* super(); |
| 174 jint nof_implementors() { | |
| 175 assert(is_loaded(), "must be loaded"); | |
| 176 if (_is_shared) return compute_shared_nof_implementors(); | |
| 177 return _nof_implementors; | |
| 178 } | |
| 179 | |
| 180 ciInstanceKlass* get_canonical_holder(int offset); | |
| 181 ciField* get_field_by_offset(int field_offset, bool is_static); | |
|
1080
7c57aead6d3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
196
diff
changeset
|
182 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
|
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
183 |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
184 GrowableArray<ciField*>* non_static_fields(); |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
185 |
| 0 | 186 // total number of nonstatic fields (including inherited): |
| 187 int nof_nonstatic_fields() { | |
| 188 if (_nonstatic_fields == NULL) | |
| 189 return compute_nonstatic_fields(); | |
| 190 else | |
| 191 return _nonstatic_fields->length(); | |
| 192 } | |
| 193 // nth nonstatic field (presented by ascending address) | |
| 194 ciField* nonstatic_field_at(int i) { | |
| 195 assert(_nonstatic_fields != NULL, ""); | |
| 196 return _nonstatic_fields->at(i); | |
| 197 } | |
| 198 | |
| 199 ciInstanceKlass* unique_concrete_subklass(); | |
| 200 bool has_finalizable_subclass(); | |
| 201 | |
| 202 bool contains_field_offset(int offset) { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
44
diff
changeset
|
203 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
| 0 | 204 } |
| 205 | |
| 206 // Get the instance of java.lang.Class corresponding to | |
| 207 // this klass. This instance is used for locking of | |
| 208 // synchronized static methods of this klass. | |
| 209 ciInstance* java_mirror(); | |
| 210 | |
| 211 // Java access flags | |
| 212 bool is_public () { return flags().is_public(); } | |
| 213 bool is_final () { return flags().is_final(); } | |
| 214 bool is_super () { return flags().is_super(); } | |
| 215 bool is_interface () { return flags().is_interface(); } | |
| 216 bool is_abstract () { return flags().is_abstract(); } | |
| 217 | |
| 218 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); | |
| 219 // Note: To find a method from name and type strings, use ciSymbol::make, | |
| 220 // but consider adding to vmSymbols.hpp instead. | |
| 221 | |
| 222 bool is_leaf_type(); | |
| 223 ciInstanceKlass* implementor(int n); | |
| 224 | |
| 225 // Is the defining class loader of this class the default loader? | |
| 226 bool uses_default_loader(); | |
| 227 | |
| 228 bool is_java_lang_Object(); | |
| 229 | |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
230 // Is this klass in the given package? |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
231 bool is_in_package(const char* packagename) { |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
232 return is_in_package(packagename, (int) strlen(packagename)); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
233 } |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
234 bool is_in_package(const char* packagename, int len); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1080
diff
changeset
|
235 |
| 0 | 236 // What kind of ciObject is this? |
| 237 bool is_instance_klass() { return true; } | |
| 238 bool is_java_klass() { return true; } | |
| 239 }; | |
| 1972 | 240 |
| 241 #endif // SHARE_VM_CI_CIINSTANCEKLASS_HPP |