1
|
1 |
/*
|
|
2 |
* Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
|
|
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 |
*
|
|
19 |
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 |
* CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 |
* have any questions.
|
|
22 |
*
|
|
23 |
*/
|
|
24 |
|
|
25 |
// ciInstanceKlass
|
|
26 |
//
|
|
27 |
// This class represents a klassOop in the HotSpot virtual machine
|
|
28 |
// whose Klass part is an instanceKlass. It may or may not
|
|
29 |
// be loaded.
|
|
30 |
class ciInstanceKlass : public ciKlass {
|
|
31 |
CI_PACKAGE_ACCESS
|
|
32 |
friend class ciEnv;
|
|
33 |
friend class ciMethod;
|
|
34 |
friend class ciField;
|
|
35 |
friend class ciBytecodeStream;
|
|
36 |
|
|
37 |
private:
|
|
38 |
bool _is_shared;
|
|
39 |
|
|
40 |
jobject _loader;
|
|
41 |
jobject _protection_domain;
|
|
42 |
|
|
43 |
bool _is_initialized;
|
|
44 |
bool _is_linked;
|
|
45 |
bool _has_finalizer;
|
|
46 |
bool _has_subklass;
|
|
47 |
ciFlags _flags;
|
|
48 |
jint _nonstatic_field_size;
|
|
49 |
|
|
50 |
// Lazy fields get filled in only upon request.
|
|
51 |
ciInstanceKlass* _super;
|
|
52 |
ciInstance* _java_mirror;
|
|
53 |
|
|
54 |
ciConstantPoolCache* _field_cache; // cached map index->field
|
|
55 |
GrowableArray<ciField*>* _nonstatic_fields;
|
|
56 |
|
|
57 |
enum { implementors_limit = instanceKlass::implementors_limit };
|
|
58 |
ciInstanceKlass* _implementors[implementors_limit];
|
|
59 |
jint _nof_implementors;
|
|
60 |
|
|
61 |
protected:
|
|
62 |
ciInstanceKlass(KlassHandle h_k);
|
|
63 |
ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain);
|
|
64 |
|
|
65 |
instanceKlass* get_instanceKlass() const {
|
|
66 |
return (instanceKlass*)get_Klass();
|
|
67 |
}
|
|
68 |
|
|
69 |
oop loader();
|
|
70 |
jobject loader_handle();
|
|
71 |
|
|
72 |
oop protection_domain();
|
|
73 |
jobject protection_domain_handle();
|
|
74 |
|
|
75 |
const char* type_string() { return "ciInstanceKlass"; }
|
|
76 |
|
|
77 |
void print_impl(outputStream* st);
|
|
78 |
|
|
79 |
ciConstantPoolCache* field_cache();
|
|
80 |
|
|
81 |
bool is_shared() { return _is_shared; }
|
|
82 |
|
|
83 |
bool compute_shared_is_initialized();
|
|
84 |
bool compute_shared_is_linked();
|
|
85 |
bool compute_shared_has_subklass();
|
|
86 |
int compute_shared_nof_implementors();
|
|
87 |
int compute_nonstatic_fields();
|
|
88 |
GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields);
|
|
89 |
|
|
90 |
public:
|
|
91 |
// Has this klass been initialized?
|
|
92 |
bool is_initialized() {
|
|
93 |
if (_is_shared && !_is_initialized) {
|
|
94 |
return is_loaded() && compute_shared_is_initialized();
|
|
95 |
}
|
|
96 |
return _is_initialized;
|
|
97 |
}
|
|
98 |
// Has this klass been linked?
|
|
99 |
bool is_linked() {
|
|
100 |
if (_is_shared && !_is_linked) {
|
|
101 |
return is_loaded() && compute_shared_is_linked();
|
|
102 |
}
|
|
103 |
return _is_linked;
|
|
104 |
}
|
|
105 |
|
|
106 |
// General klass information.
|
|
107 |
ciFlags flags() {
|
|
108 |
assert(is_loaded(), "must be loaded");
|
|
109 |
return _flags;
|
|
110 |
}
|
|
111 |
bool has_finalizer() {
|
|
112 |
assert(is_loaded(), "must be loaded");
|
|
113 |
return _has_finalizer; }
|
|
114 |
bool has_subklass() {
|
|
115 |
assert(is_loaded(), "must be loaded");
|
|
116 |
if (_is_shared && !_has_subklass) {
|
|
117 |
if (flags().is_final()) {
|
|
118 |
return false;
|
|
119 |
} else {
|
|
120 |
return compute_shared_has_subklass();
|
|
121 |
}
|
|
122 |
}
|
|
123 |
return _has_subklass;
|
|
124 |
}
|
|
125 |
jint size_helper() {
|
|
126 |
return (Klass::layout_helper_size_in_bytes(layout_helper())
|
|
127 |
>> LogHeapWordSize);
|
|
128 |
}
|
|
129 |
jint nonstatic_field_size() {
|
|
130 |
assert(is_loaded(), "must be loaded");
|
|
131 |
return _nonstatic_field_size; }
|
|
132 |
ciInstanceKlass* super();
|
|
133 |
jint nof_implementors() {
|
|
134 |
assert(is_loaded(), "must be loaded");
|
|
135 |
if (_is_shared) return compute_shared_nof_implementors();
|
|
136 |
return _nof_implementors;
|
|
137 |
}
|
|
138 |
|
|
139 |
ciInstanceKlass* get_canonical_holder(int offset);
|
|
140 |
ciField* get_field_by_offset(int field_offset, bool is_static);
|
|
141 |
// total number of nonstatic fields (including inherited):
|
|
142 |
int nof_nonstatic_fields() {
|
|
143 |
if (_nonstatic_fields == NULL)
|
|
144 |
return compute_nonstatic_fields();
|
|
145 |
else
|
|
146 |
return _nonstatic_fields->length();
|
|
147 |
}
|
|
148 |
// nth nonstatic field (presented by ascending address)
|
|
149 |
ciField* nonstatic_field_at(int i) {
|
|
150 |
assert(_nonstatic_fields != NULL, "");
|
|
151 |
return _nonstatic_fields->at(i);
|
|
152 |
}
|
|
153 |
|
|
154 |
ciInstanceKlass* unique_concrete_subklass();
|
|
155 |
bool has_finalizable_subclass();
|
|
156 |
|
|
157 |
bool contains_field_offset(int offset) {
|
|
158 |
return (offset/wordSize) >= instanceOopDesc::header_size()
|
|
159 |
&& (offset/wordSize)-instanceOopDesc::header_size() < nonstatic_field_size();
|
|
160 |
}
|
|
161 |
|
|
162 |
// Get the instance of java.lang.Class corresponding to
|
|
163 |
// this klass. This instance is used for locking of
|
|
164 |
// synchronized static methods of this klass.
|
|
165 |
ciInstance* java_mirror();
|
|
166 |
|
|
167 |
// Java access flags
|
|
168 |
bool is_public () { return flags().is_public(); }
|
|
169 |
bool is_final () { return flags().is_final(); }
|
|
170 |
bool is_super () { return flags().is_super(); }
|
|
171 |
bool is_interface () { return flags().is_interface(); }
|
|
172 |
bool is_abstract () { return flags().is_abstract(); }
|
|
173 |
|
|
174 |
ciMethod* find_method(ciSymbol* name, ciSymbol* signature);
|
|
175 |
// Note: To find a method from name and type strings, use ciSymbol::make,
|
|
176 |
// but consider adding to vmSymbols.hpp instead.
|
|
177 |
|
|
178 |
bool is_leaf_type();
|
|
179 |
ciInstanceKlass* implementor(int n);
|
|
180 |
|
|
181 |
// Is the defining class loader of this class the default loader?
|
|
182 |
bool uses_default_loader();
|
|
183 |
|
|
184 |
bool is_java_lang_Object();
|
|
185 |
|
|
186 |
// What kind of ciObject is this?
|
|
187 |
bool is_instance_klass() { return true; }
|
|
188 |
bool is_java_klass() { return true; }
|
|
189 |
};
|