author | coleenp |
Sat, 01 Sep 2012 13:25:18 -0400 | |
changeset 13728 | 882756847a04 |
parent 12369 | 48fd3da4025c |
child 14477 | 95e66ea71f71 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
2 |
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
1 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4567
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4567
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
4567
diff
changeset
|
21 |
* questions. |
1 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 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/ciKlass.hpp" |
|
31 |
#include "ci/ciSymbol.hpp" |
|
32 |
||
1 | 33 |
// ciInstanceKlass |
34 |
// |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
35 |
// This class represents a Klass* in the HotSpot virtual machine |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
36 |
// whose Klass part is an InstanceKlass. It may or may not |
1 | 37 |
// be loaded. |
38 |
class ciInstanceKlass : public ciKlass { |
|
39 |
CI_PACKAGE_ACCESS |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
40 |
friend class ciBytecodeStream; |
1 | 41 |
friend class ciEnv; |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
42 |
friend class ciExceptionHandler; |
1 | 43 |
friend class ciMethod; |
44 |
friend class ciField; |
|
45 |
||
46 |
private: |
|
47 |
jobject _loader; |
|
48 |
jobject _protection_domain; |
|
49 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
50 |
InstanceKlass::ClassState _init_state; // state of class |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
51 |
bool _is_shared; |
1 | 52 |
bool _has_finalizer; |
53 |
bool _has_subklass; |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
54 |
bool _has_nonstatic_fields; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
55 |
|
1 | 56 |
ciFlags _flags; |
57 |
jint _nonstatic_field_size; |
|
217
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
58 |
jint _nonstatic_oop_map_size; |
1 | 59 |
|
60 |
// Lazy fields get filled in only upon request. |
|
61 |
ciInstanceKlass* _super; |
|
62 |
ciInstance* _java_mirror; |
|
63 |
||
64 |
ciConstantPoolCache* _field_cache; // cached map index->field |
|
65 |
GrowableArray<ciField*>* _nonstatic_fields; |
|
66 |
||
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
67 |
// The possible values of the _implementor fall into following three cases: |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
68 |
// NULL: no implementor. |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
69 |
// A ciInstanceKlass that's not itself: one implementor. |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
70 |
// Itsef: more than one implementors. |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
71 |
ciInstanceKlass* _implementor; |
1 | 72 |
|
217
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
73 |
GrowableArray<ciField*>* _non_static_fields; |
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
74 |
|
1 | 75 |
protected: |
76 |
ciInstanceKlass(KlassHandle h_k); |
|
77 |
ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); |
|
78 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
79 |
InstanceKlass* get_instanceKlass() const { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
80 |
return (InstanceKlass*)get_Klass(); |
1 | 81 |
} |
82 |
||
83 |
oop loader(); |
|
84 |
jobject loader_handle(); |
|
85 |
||
86 |
oop protection_domain(); |
|
87 |
jobject protection_domain_handle(); |
|
88 |
||
89 |
const char* type_string() { return "ciInstanceKlass"; } |
|
90 |
||
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
91 |
bool is_in_package_impl(const char* packagename, int len); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
92 |
|
1 | 93 |
void print_impl(outputStream* st); |
94 |
||
95 |
ciConstantPoolCache* field_cache(); |
|
96 |
||
97 |
bool is_shared() { return _is_shared; } |
|
98 |
||
5925
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
99 |
void compute_shared_init_state(); |
1 | 100 |
bool compute_shared_has_subklass(); |
101 |
int compute_nonstatic_fields(); |
|
102 |
GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); |
|
103 |
||
5925
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
104 |
// Update the init_state for shared klasses |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
105 |
void update_if_shared(InstanceKlass::ClassState expected) { |
5925
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
106 |
if (_is_shared && _init_state != expected) { |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
107 |
if (is_loaded()) compute_shared_init_state(); |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
108 |
} |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
109 |
} |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
110 |
|
1 | 111 |
public: |
112 |
// Has this klass been initialized? |
|
113 |
bool is_initialized() { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
114 |
update_if_shared(InstanceKlass::fully_initialized); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
115 |
return _init_state == InstanceKlass::fully_initialized; |
5925
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
116 |
} |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
117 |
// Is this klass being initialized? |
a30fef61d0b7
6958668: repeated uncommon trapping for new of klass which is being initialized
never
parents:
5547
diff
changeset
|
118 |
bool is_being_initialized() { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
119 |
update_if_shared(InstanceKlass::being_initialized); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
120 |
return _init_state == InstanceKlass::being_initialized; |
1 | 121 |
} |
122 |
// Has this klass been linked? |
|
123 |
bool is_linked() { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
124 |
update_if_shared(InstanceKlass::linked); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
125 |
return _init_state >= InstanceKlass::linked; |
1 | 126 |
} |
127 |
||
128 |
// General klass information. |
|
129 |
ciFlags flags() { |
|
130 |
assert(is_loaded(), "must be loaded"); |
|
131 |
return _flags; |
|
132 |
} |
|
133 |
bool has_finalizer() { |
|
134 |
assert(is_loaded(), "must be loaded"); |
|
135 |
return _has_finalizer; } |
|
136 |
bool has_subklass() { |
|
137 |
assert(is_loaded(), "must be loaded"); |
|
138 |
if (_is_shared && !_has_subklass) { |
|
139 |
if (flags().is_final()) { |
|
140 |
return false; |
|
141 |
} else { |
|
142 |
return compute_shared_has_subklass(); |
|
143 |
} |
|
144 |
} |
|
145 |
return _has_subklass; |
|
146 |
} |
|
147 |
jint size_helper() { |
|
148 |
return (Klass::layout_helper_size_in_bytes(layout_helper()) |
|
149 |
>> LogHeapWordSize); |
|
150 |
} |
|
151 |
jint nonstatic_field_size() { |
|
152 |
assert(is_loaded(), "must be loaded"); |
|
153 |
return _nonstatic_field_size; } |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
154 |
jint has_nonstatic_fields() { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
155 |
assert(is_loaded(), "must be loaded"); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
156 |
return _has_nonstatic_fields; } |
217
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
157 |
jint nonstatic_oop_map_size() { |
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
158 |
assert(is_loaded(), "must be loaded"); |
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
159 |
return _nonstatic_oop_map_size; } |
1 | 160 |
ciInstanceKlass* super(); |
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
161 |
jint nof_implementors() { |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
162 |
ciInstanceKlass* impl; |
1 | 163 |
assert(is_loaded(), "must be loaded"); |
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
164 |
impl = implementor(); |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
165 |
if (impl == NULL) { |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
166 |
return 0; |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
167 |
} else if (impl != this) { |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
168 |
return 1; |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
169 |
} else { |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
170 |
return 2; |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
171 |
} |
1 | 172 |
} |
173 |
||
174 |
ciInstanceKlass* get_canonical_holder(int offset); |
|
175 |
ciField* get_field_by_offset(int field_offset, bool is_static); |
|
4450
6d700b859b3e
6892658: C2 should optimize some stringbuilder patterns
never
parents:
670
diff
changeset
|
176 |
ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
217
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
177 |
|
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
178 |
GrowableArray<ciField*>* non_static_fields(); |
c646ef2f5d58
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
1
diff
changeset
|
179 |
|
1 | 180 |
// total number of nonstatic fields (including inherited): |
181 |
int nof_nonstatic_fields() { |
|
182 |
if (_nonstatic_fields == NULL) |
|
183 |
return compute_nonstatic_fields(); |
|
184 |
else |
|
185 |
return _nonstatic_fields->length(); |
|
186 |
} |
|
187 |
// nth nonstatic field (presented by ascending address) |
|
188 |
ciField* nonstatic_field_at(int i) { |
|
189 |
assert(_nonstatic_fields != NULL, ""); |
|
190 |
return _nonstatic_fields->at(i); |
|
191 |
} |
|
192 |
||
193 |
ciInstanceKlass* unique_concrete_subklass(); |
|
194 |
bool has_finalizable_subclass(); |
|
195 |
||
196 |
bool contains_field_offset(int offset) { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
217
diff
changeset
|
197 |
return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
1 | 198 |
} |
199 |
||
200 |
// Get the instance of java.lang.Class corresponding to |
|
201 |
// this klass. This instance is used for locking of |
|
202 |
// synchronized static methods of this klass. |
|
203 |
ciInstance* java_mirror(); |
|
204 |
||
205 |
// Java access flags |
|
206 |
bool is_public () { return flags().is_public(); } |
|
207 |
bool is_final () { return flags().is_final(); } |
|
208 |
bool is_super () { return flags().is_super(); } |
|
209 |
bool is_interface () { return flags().is_interface(); } |
|
210 |
bool is_abstract () { return flags().is_abstract(); } |
|
211 |
||
212 |
ciMethod* find_method(ciSymbol* name, ciSymbol* signature); |
|
213 |
// Note: To find a method from name and type strings, use ciSymbol::make, |
|
214 |
// but consider adding to vmSymbols.hpp instead. |
|
215 |
||
216 |
bool is_leaf_type(); |
|
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
7397
diff
changeset
|
217 |
ciInstanceKlass* implementor(); |
1 | 218 |
|
219 |
// Is the defining class loader of this class the default loader? |
|
220 |
bool uses_default_loader(); |
|
221 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
222 |
bool is_java_lang_Object() const; |
1 | 223 |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
224 |
// Is this klass in the given package? |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
225 |
bool is_in_package(const char* packagename) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
226 |
return is_in_package(packagename, (int) strlen(packagename)); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
227 |
} |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
228 |
bool is_in_package(const char* packagename, int len); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4450
diff
changeset
|
229 |
|
1 | 230 |
// What kind of ciObject is this? |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
231 |
bool is_instance_klass() const { return true; } |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
232 |
bool is_java_klass() const { return true; } |
1 | 233 |
}; |
7397 | 234 |
|
235 |
#endif // SHARE_VM_CI_CIINSTANCEKLASS_HPP |