Mercurial > hg > truffle
annotate src/share/vm/ci/ciInstanceKlass.hpp @ 6147:5ba29a1db46e hs24-b14
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author | amurillo |
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date | Fri, 15 Jun 2012 14:07:00 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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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 | |
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41 friend class ciBytecodeStream; |
0 | 42 friend class ciEnv; |
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43 friend class ciExceptionHandler; |
0 | 44 friend class ciMethod; |
45 friend class ciField; | |
46 | |
47 private: | |
48 jobject _loader; | |
49 jobject _protection_domain; | |
50 | |
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51 instanceKlass::ClassState _init_state; // state of class |
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52 bool _is_shared; |
0 | 53 bool _has_finalizer; |
54 bool _has_subklass; | |
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55 bool _has_nonstatic_fields; |
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56 |
0 | 57 ciFlags _flags; |
58 jint _nonstatic_field_size; | |
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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 | |
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68 // The possible values of the _implementor fall into following three cases: |
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69 // NULL: no implementor. |
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70 // A ciInstanceKlass that's not itself: one implementor. |
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71 // Itsef: more than one implementors. |
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72 ciInstanceKlass* _implementor; |
0 | 73 |
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74 GrowableArray<ciField*>* _non_static_fields; |
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75 |
0 | 76 protected: |
77 ciInstanceKlass(KlassHandle h_k); | |
78 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); | |
79 | |
80 instanceKlass* get_instanceKlass() const { | |
81 return (instanceKlass*)get_Klass(); | |
82 } | |
83 | |
84 oop loader(); | |
85 jobject loader_handle(); | |
86 | |
87 oop protection_domain(); | |
88 jobject protection_domain_handle(); | |
89 | |
90 const char* type_string() { return "ciInstanceKlass"; } | |
91 | |
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92 bool is_in_package_impl(const char* packagename, int len); |
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93 |
0 | 94 void print_impl(outputStream* st); |
95 | |
96 ciConstantPoolCache* field_cache(); | |
97 | |
98 bool is_shared() { return _is_shared; } | |
99 | |
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100 void compute_shared_init_state(); |
0 | 101 bool compute_shared_has_subklass(); |
102 int compute_nonstatic_fields(); | |
103 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); | |
104 | |
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105 // Update the init_state for shared klasses |
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106 void update_if_shared(instanceKlass::ClassState expected) { |
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107 if (_is_shared && _init_state != expected) { |
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108 if (is_loaded()) compute_shared_init_state(); |
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109 } |
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110 } |
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111 |
0 | 112 public: |
113 // Has this klass been initialized? | |
114 bool is_initialized() { | |
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115 update_if_shared(instanceKlass::fully_initialized); |
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116 return _init_state == instanceKlass::fully_initialized; |
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117 } |
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118 // Is this klass being initialized? |
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119 bool is_being_initialized() { |
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120 update_if_shared(instanceKlass::being_initialized); |
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121 return _init_state == instanceKlass::being_initialized; |
0 | 122 } |
123 // Has this klass been linked? | |
124 bool is_linked() { | |
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125 update_if_shared(instanceKlass::linked); |
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126 return _init_state >= instanceKlass::linked; |
0 | 127 } |
128 | |
129 // General klass information. | |
130 ciFlags flags() { | |
131 assert(is_loaded(), "must be loaded"); | |
132 return _flags; | |
133 } | |
134 bool has_finalizer() { | |
135 assert(is_loaded(), "must be loaded"); | |
136 return _has_finalizer; } | |
137 bool has_subklass() { | |
138 assert(is_loaded(), "must be loaded"); | |
139 if (_is_shared && !_has_subklass) { | |
140 if (flags().is_final()) { | |
141 return false; | |
142 } else { | |
143 return compute_shared_has_subklass(); | |
144 } | |
145 } | |
146 return _has_subklass; | |
147 } | |
148 jint size_helper() { | |
149 return (Klass::layout_helper_size_in_bytes(layout_helper()) | |
150 >> LogHeapWordSize); | |
151 } | |
152 jint nonstatic_field_size() { | |
153 assert(is_loaded(), "must be loaded"); | |
154 return _nonstatic_field_size; } | |
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155 jint has_nonstatic_fields() { |
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156 assert(is_loaded(), "must be loaded"); |
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157 return _has_nonstatic_fields; } |
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158 jint nonstatic_oop_map_size() { |
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159 assert(is_loaded(), "must be loaded"); |
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160 return _nonstatic_oop_map_size; } |
0 | 161 ciInstanceKlass* super(); |
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162 jint nof_implementors() { |
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163 ciInstanceKlass* impl; |
0 | 164 assert(is_loaded(), "must be loaded"); |
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165 impl = implementor(); |
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166 if (impl == NULL) { |
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167 return 0; |
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168 } else if (impl != this) { |
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169 return 1; |
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170 } else { |
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171 return 2; |
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172 } |
0 | 173 } |
174 | |
175 ciInstanceKlass* get_canonical_holder(int offset); | |
176 ciField* get_field_by_offset(int field_offset, bool is_static); | |
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177 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
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178 |
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179 GrowableArray<ciField*>* non_static_fields(); |
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180 |
0 | 181 // total number of nonstatic fields (including inherited): |
182 int nof_nonstatic_fields() { | |
183 if (_nonstatic_fields == NULL) | |
184 return compute_nonstatic_fields(); | |
185 else | |
186 return _nonstatic_fields->length(); | |
187 } | |
188 // nth nonstatic field (presented by ascending address) | |
189 ciField* nonstatic_field_at(int i) { | |
190 assert(_nonstatic_fields != NULL, ""); | |
191 return _nonstatic_fields->at(i); | |
192 } | |
193 | |
194 ciInstanceKlass* unique_concrete_subklass(); | |
195 bool has_finalizable_subclass(); | |
196 | |
197 bool contains_field_offset(int offset) { | |
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198 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
0 | 199 } |
200 | |
201 // Get the instance of java.lang.Class corresponding to | |
202 // this klass. This instance is used for locking of | |
203 // synchronized static methods of this klass. | |
204 ciInstance* java_mirror(); | |
205 | |
206 // Java access flags | |
207 bool is_public () { return flags().is_public(); } | |
208 bool is_final () { return flags().is_final(); } | |
209 bool is_super () { return flags().is_super(); } | |
210 bool is_interface () { return flags().is_interface(); } | |
211 bool is_abstract () { return flags().is_abstract(); } | |
212 | |
213 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); | |
214 // Note: To find a method from name and type strings, use ciSymbol::make, | |
215 // but consider adding to vmSymbols.hpp instead. | |
216 | |
217 bool is_leaf_type(); | |
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218 ciInstanceKlass* implementor(); |
0 | 219 |
220 // Is the defining class loader of this class the default loader? | |
221 bool uses_default_loader(); | |
222 | |
223 bool is_java_lang_Object(); | |
224 | |
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225 // Is this klass in the given package? |
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226 bool is_in_package(const char* packagename) { |
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227 return is_in_package(packagename, (int) strlen(packagename)); |
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228 } |
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229 bool is_in_package(const char* packagename, int len); |
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230 |
0 | 231 // What kind of ciObject is this? |
232 bool is_instance_klass() { return true; } | |
233 bool is_java_klass() { return true; } | |
234 }; | |
1972 | 235 |
236 #endif // SHARE_VM_CI_CIINSTANCEKLASS_HPP |