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annotate src/share/vm/ci/ciInstanceKlass.hpp @ 11722:ff05c78a7f64
use time passed to decide what methods to compile or inline
author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 19 Sep 2013 10:36:56 +0200 |
parents | 836a62f43af9 |
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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/ciKlass.hpp" | |
31 #include "ci/ciSymbol.hpp" | |
32 | |
0 | 33 // ciInstanceKlass |
34 // | |
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35 // This class represents a Klass* in the HotSpot virtual machine |
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36 // whose Klass part is an InstanceKlass. It may or may not |
0 | 37 // be loaded. |
38 class ciInstanceKlass : public ciKlass { | |
39 CI_PACKAGE_ACCESS | |
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40 friend class ciBytecodeStream; |
0 | 41 friend class ciEnv; |
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42 friend class ciExceptionHandler; |
0 | 43 friend class ciMethod; |
44 friend class ciField; | |
45 | |
46 private: | |
47 jobject _loader; | |
48 jobject _protection_domain; | |
49 | |
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50 InstanceKlass::ClassState _init_state; // state of class |
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51 bool _is_shared; |
0 | 52 bool _has_finalizer; |
53 bool _has_subklass; | |
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54 bool _has_nonstatic_fields; |
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55 |
0 | 56 ciFlags _flags; |
57 jint _nonstatic_field_size; | |
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58 jint _nonstatic_oop_map_size; |
0 | 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 | |
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67 // The possible values of the _implementor fall into following three cases: |
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68 // NULL: no implementor. |
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69 // A ciInstanceKlass that's not itself: one implementor. |
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70 // Itsef: more than one implementors. |
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71 ciInstanceKlass* _implementor; |
0 | 72 |
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73 GrowableArray<ciField*>* _non_static_fields; |
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74 |
0 | 75 protected: |
76 ciInstanceKlass(KlassHandle h_k); | |
77 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); | |
78 | |
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79 InstanceKlass* get_instanceKlass() const { |
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80 return (InstanceKlass*)get_Klass(); |
0 | 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 | |
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91 bool is_in_package_impl(const char* packagename, int len); |
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92 |
0 | 93 void print_impl(outputStream* st); |
94 | |
95 ciConstantPoolCache* field_cache(); | |
96 | |
97 bool is_shared() { return _is_shared; } | |
98 | |
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99 void compute_shared_init_state(); |
0 | 100 bool compute_shared_has_subklass(); |
101 int compute_nonstatic_fields(); | |
102 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); | |
103 | |
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104 // Update the init_state for shared klasses |
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105 void update_if_shared(InstanceKlass::ClassState expected) { |
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106 if (_is_shared && _init_state != expected) { |
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107 if (is_loaded()) compute_shared_init_state(); |
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108 } |
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109 } |
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110 |
0 | 111 public: |
112 // Has this klass been initialized? | |
113 bool is_initialized() { | |
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114 update_if_shared(InstanceKlass::fully_initialized); |
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115 return _init_state == InstanceKlass::fully_initialized; |
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116 } |
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117 // Is this klass being initialized? |
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118 bool is_being_initialized() { |
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119 update_if_shared(InstanceKlass::being_initialized); |
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120 return _init_state == InstanceKlass::being_initialized; |
0 | 121 } |
122 // Has this klass been linked? | |
123 bool is_linked() { | |
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124 update_if_shared(InstanceKlass::linked); |
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125 return _init_state >= InstanceKlass::linked; |
0 | 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; } | |
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154 jint has_nonstatic_fields() { |
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155 assert(is_loaded(), "must be loaded"); |
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156 return _has_nonstatic_fields; } |
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157 jint nonstatic_oop_map_size() { |
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158 assert(is_loaded(), "must be loaded"); |
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159 return _nonstatic_oop_map_size; } |
0 | 160 ciInstanceKlass* super(); |
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161 jint nof_implementors() { |
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162 ciInstanceKlass* impl; |
0 | 163 assert(is_loaded(), "must be loaded"); |
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164 impl = implementor(); |
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165 if (impl == NULL) { |
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166 return 0; |
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167 } else if (impl != this) { |
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168 return 1; |
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169 } else { |
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170 return 2; |
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171 } |
0 | 172 } |
173 | |
174 ciInstanceKlass* get_canonical_holder(int offset); | |
175 ciField* get_field_by_offset(int field_offset, bool is_static); | |
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176 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
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177 |
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178 GrowableArray<ciField*>* non_static_fields(); |
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179 |
0 | 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) { | |
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197 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
0 | 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(); | |
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217 ciInstanceKlass* implementor(); |
0 | 218 |
219 // Is the defining class loader of this class the default loader? | |
10278 | 220 bool uses_default_loader() const; |
0 | 221 |
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222 bool is_java_lang_Object() const; |
0 | 223 |
10278 | 224 BasicType box_klass_type() const; |
225 bool is_box_klass() const; | |
226 bool is_boxed_value_offset(int offset) const; | |
227 | |
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228 // Is this klass in the given package? |
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229 bool is_in_package(const char* packagename) { |
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230 return is_in_package(packagename, (int) strlen(packagename)); |
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231 } |
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232 bool is_in_package(const char* packagename, int len); |
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233 |
0 | 234 // What kind of ciObject is this? |
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235 bool is_instance_klass() const { return true; } |
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236 bool is_java_klass() const { return true; } |
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237 |
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238 // Dump the current state of this klass for compilation replay. |
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239 virtual void dump_replay_data(outputStream* out); |
0 | 240 }; |
1972 | 241 |
242 #endif // SHARE_VM_CI_CIINSTANCEKLASS_HPP |