Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciInstanceKlass.hpp @ 1138:dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Tue, 05 Jan 2010 15:21:25 +0100 |
| parents | 7c57aead6d3e |
| children | 5571b97fc1ec c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1999-2008 Sun Microsystems, Inc. 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 * | |
| 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 | |
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32 friend class ciBytecodeStream; |
| 0 | 33 friend class ciEnv; |
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34 friend class ciExceptionHandler; |
| 0 | 35 friend class ciMethod; |
| 36 friend class ciField; | |
| 37 | |
| 38 private: | |
| 39 jobject _loader; | |
| 40 jobject _protection_domain; | |
| 41 | |
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42 bool _is_shared; |
| 0 | 43 bool _is_initialized; |
| 44 bool _is_linked; | |
| 45 bool _has_finalizer; | |
| 46 bool _has_subklass; | |
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47 bool _has_nonstatic_fields; |
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48 |
| 0 | 49 ciFlags _flags; |
| 50 jint _nonstatic_field_size; | |
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51 jint _nonstatic_oop_map_size; |
| 0 | 52 |
| 53 // Lazy fields get filled in only upon request. | |
| 54 ciInstanceKlass* _super; | |
| 55 ciInstance* _java_mirror; | |
| 56 | |
| 57 ciConstantPoolCache* _field_cache; // cached map index->field | |
| 58 GrowableArray<ciField*>* _nonstatic_fields; | |
| 59 | |
| 60 enum { implementors_limit = instanceKlass::implementors_limit }; | |
| 61 ciInstanceKlass* _implementors[implementors_limit]; | |
| 62 jint _nof_implementors; | |
| 63 | |
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64 GrowableArray<ciField*>* _non_static_fields; |
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65 |
| 0 | 66 protected: |
| 67 ciInstanceKlass(KlassHandle h_k); | |
| 68 ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); | |
| 69 | |
| 70 instanceKlass* get_instanceKlass() const { | |
| 71 return (instanceKlass*)get_Klass(); | |
| 72 } | |
| 73 | |
| 74 oop loader(); | |
| 75 jobject loader_handle(); | |
| 76 | |
| 77 oop protection_domain(); | |
| 78 jobject protection_domain_handle(); | |
| 79 | |
| 80 const char* type_string() { return "ciInstanceKlass"; } | |
| 81 | |
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82 bool is_in_package_impl(const char* packagename, int len); |
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83 |
| 0 | 84 void print_impl(outputStream* st); |
| 85 | |
| 86 ciConstantPoolCache* field_cache(); | |
| 87 | |
| 88 bool is_shared() { return _is_shared; } | |
| 89 | |
| 90 bool compute_shared_is_initialized(); | |
| 91 bool compute_shared_is_linked(); | |
| 92 bool compute_shared_has_subklass(); | |
| 93 int compute_shared_nof_implementors(); | |
| 94 int compute_nonstatic_fields(); | |
| 95 GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); | |
| 96 | |
| 97 public: | |
| 98 // Has this klass been initialized? | |
| 99 bool is_initialized() { | |
| 100 if (_is_shared && !_is_initialized) { | |
| 101 return is_loaded() && compute_shared_is_initialized(); | |
| 102 } | |
| 103 return _is_initialized; | |
| 104 } | |
| 105 // Has this klass been linked? | |
| 106 bool is_linked() { | |
| 107 if (_is_shared && !_is_linked) { | |
| 108 return is_loaded() && compute_shared_is_linked(); | |
| 109 } | |
| 110 return _is_linked; | |
| 111 } | |
| 112 | |
| 113 // General klass information. | |
| 114 ciFlags flags() { | |
| 115 assert(is_loaded(), "must be loaded"); | |
| 116 return _flags; | |
| 117 } | |
| 118 bool has_finalizer() { | |
| 119 assert(is_loaded(), "must be loaded"); | |
| 120 return _has_finalizer; } | |
| 121 bool has_subklass() { | |
| 122 assert(is_loaded(), "must be loaded"); | |
| 123 if (_is_shared && !_has_subklass) { | |
| 124 if (flags().is_final()) { | |
| 125 return false; | |
| 126 } else { | |
| 127 return compute_shared_has_subklass(); | |
| 128 } | |
| 129 } | |
| 130 return _has_subklass; | |
| 131 } | |
| 132 jint size_helper() { | |
| 133 return (Klass::layout_helper_size_in_bytes(layout_helper()) | |
| 134 >> LogHeapWordSize); | |
| 135 } | |
| 136 jint nonstatic_field_size() { | |
| 137 assert(is_loaded(), "must be loaded"); | |
| 138 return _nonstatic_field_size; } | |
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139 jint has_nonstatic_fields() { |
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140 assert(is_loaded(), "must be loaded"); |
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141 return _has_nonstatic_fields; } |
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142 jint nonstatic_oop_map_size() { |
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143 assert(is_loaded(), "must be loaded"); |
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144 return _nonstatic_oop_map_size; } |
| 0 | 145 ciInstanceKlass* super(); |
| 146 jint nof_implementors() { | |
| 147 assert(is_loaded(), "must be loaded"); | |
| 148 if (_is_shared) return compute_shared_nof_implementors(); | |
| 149 return _nof_implementors; | |
| 150 } | |
| 151 | |
| 152 ciInstanceKlass* get_canonical_holder(int offset); | |
| 153 ciField* get_field_by_offset(int field_offset, bool is_static); | |
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154 ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
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155 |
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156 GrowableArray<ciField*>* non_static_fields(); |
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157 |
| 0 | 158 // total number of nonstatic fields (including inherited): |
| 159 int nof_nonstatic_fields() { | |
| 160 if (_nonstatic_fields == NULL) | |
| 161 return compute_nonstatic_fields(); | |
| 162 else | |
| 163 return _nonstatic_fields->length(); | |
| 164 } | |
| 165 // nth nonstatic field (presented by ascending address) | |
| 166 ciField* nonstatic_field_at(int i) { | |
| 167 assert(_nonstatic_fields != NULL, ""); | |
| 168 return _nonstatic_fields->at(i); | |
| 169 } | |
| 170 | |
| 171 ciInstanceKlass* unique_concrete_subklass(); | |
| 172 bool has_finalizable_subclass(); | |
| 173 | |
| 174 bool contains_field_offset(int offset) { | |
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175 return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
| 0 | 176 } |
| 177 | |
| 178 // Get the instance of java.lang.Class corresponding to | |
| 179 // this klass. This instance is used for locking of | |
| 180 // synchronized static methods of this klass. | |
| 181 ciInstance* java_mirror(); | |
| 182 | |
| 183 // Java access flags | |
| 184 bool is_public () { return flags().is_public(); } | |
| 185 bool is_final () { return flags().is_final(); } | |
| 186 bool is_super () { return flags().is_super(); } | |
| 187 bool is_interface () { return flags().is_interface(); } | |
| 188 bool is_abstract () { return flags().is_abstract(); } | |
| 189 | |
| 190 ciMethod* find_method(ciSymbol* name, ciSymbol* signature); | |
| 191 // Note: To find a method from name and type strings, use ciSymbol::make, | |
| 192 // but consider adding to vmSymbols.hpp instead. | |
| 193 | |
| 194 bool is_leaf_type(); | |
| 195 ciInstanceKlass* implementor(int n); | |
| 196 | |
| 197 // Is the defining class loader of this class the default loader? | |
| 198 bool uses_default_loader(); | |
| 199 | |
| 200 bool is_java_lang_Object(); | |
| 201 | |
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202 // Is this klass in the given package? |
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203 bool is_in_package(const char* packagename) { |
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204 return is_in_package(packagename, (int) strlen(packagename)); |
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205 } |
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206 bool is_in_package(const char* packagename, int len); |
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207 |
| 0 | 208 // What kind of ciObject is this? |
| 209 bool is_instance_klass() { return true; } | |
| 210 bool is_java_klass() { return true; } | |
| 211 }; |