Wed, 03 Jul 2019 20:42:37 +0800
Merge
aoqi@0 | 1 | /* |
coleenp@8739 | 2 | * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #ifndef SHARE_VM_CI_CIINSTANCEKLASS_HPP |
aoqi@0 | 26 | #define SHARE_VM_CI_CIINSTANCEKLASS_HPP |
aoqi@0 | 27 | |
aoqi@0 | 28 | #include "ci/ciConstantPoolCache.hpp" |
aoqi@0 | 29 | #include "ci/ciFlags.hpp" |
aoqi@0 | 30 | #include "ci/ciKlass.hpp" |
aoqi@0 | 31 | #include "ci/ciSymbol.hpp" |
aoqi@0 | 32 | |
aoqi@0 | 33 | // ciInstanceKlass |
aoqi@0 | 34 | // |
aoqi@0 | 35 | // This class represents a Klass* in the HotSpot virtual machine |
aoqi@0 | 36 | // whose Klass part is an InstanceKlass. It may or may not |
aoqi@0 | 37 | // be loaded. |
aoqi@0 | 38 | class ciInstanceKlass : public ciKlass { |
aoqi@0 | 39 | CI_PACKAGE_ACCESS |
aoqi@0 | 40 | friend class ciBytecodeStream; |
aoqi@0 | 41 | friend class ciEnv; |
aoqi@0 | 42 | friend class ciExceptionHandler; |
aoqi@0 | 43 | friend class ciMethod; |
aoqi@0 | 44 | friend class ciField; |
aoqi@0 | 45 | |
aoqi@0 | 46 | private: |
aoqi@0 | 47 | jobject _loader; |
aoqi@0 | 48 | jobject _protection_domain; |
aoqi@0 | 49 | |
aoqi@0 | 50 | InstanceKlass::ClassState _init_state; // state of class |
aoqi@0 | 51 | bool _is_shared; |
aoqi@0 | 52 | bool _has_finalizer; |
aoqi@0 | 53 | bool _has_subklass; |
aoqi@0 | 54 | bool _has_nonstatic_fields; |
aoqi@0 | 55 | bool _has_default_methods; |
coleenp@8739 | 56 | bool _is_anonymous; |
aoqi@0 | 57 | |
aoqi@0 | 58 | ciFlags _flags; |
aoqi@0 | 59 | jint _nonstatic_field_size; |
aoqi@0 | 60 | jint _nonstatic_oop_map_size; |
aoqi@0 | 61 | |
aoqi@0 | 62 | // Lazy fields get filled in only upon request. |
aoqi@0 | 63 | ciInstanceKlass* _super; |
aoqi@0 | 64 | ciInstance* _java_mirror; |
aoqi@0 | 65 | |
aoqi@0 | 66 | ciConstantPoolCache* _field_cache; // cached map index->field |
aoqi@0 | 67 | GrowableArray<ciField*>* _nonstatic_fields; |
aoqi@0 | 68 | |
aoqi@0 | 69 | // The possible values of the _implementor fall into following three cases: |
aoqi@0 | 70 | // NULL: no implementor. |
aoqi@0 | 71 | // A ciInstanceKlass that's not itself: one implementor. |
aoqi@0 | 72 | // Itsef: more than one implementors. |
aoqi@0 | 73 | ciInstanceKlass* _implementor; |
aoqi@0 | 74 | |
aoqi@0 | 75 | GrowableArray<ciField*>* _non_static_fields; |
aoqi@0 | 76 | |
aoqi@0 | 77 | protected: |
aoqi@0 | 78 | ciInstanceKlass(KlassHandle h_k); |
aoqi@0 | 79 | ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); |
aoqi@0 | 80 | |
aoqi@0 | 81 | InstanceKlass* get_instanceKlass() const { |
aoqi@0 | 82 | return (InstanceKlass*)get_Klass(); |
aoqi@0 | 83 | } |
aoqi@0 | 84 | |
aoqi@0 | 85 | oop loader(); |
aoqi@0 | 86 | jobject loader_handle(); |
aoqi@0 | 87 | |
aoqi@0 | 88 | oop protection_domain(); |
aoqi@0 | 89 | jobject protection_domain_handle(); |
aoqi@0 | 90 | |
aoqi@0 | 91 | const char* type_string() { return "ciInstanceKlass"; } |
aoqi@0 | 92 | |
aoqi@0 | 93 | bool is_in_package_impl(const char* packagename, int len); |
aoqi@0 | 94 | |
aoqi@0 | 95 | void print_impl(outputStream* st); |
aoqi@0 | 96 | |
aoqi@0 | 97 | ciConstantPoolCache* field_cache(); |
aoqi@0 | 98 | |
aoqi@0 | 99 | bool is_shared() { return _is_shared; } |
aoqi@0 | 100 | |
aoqi@0 | 101 | void compute_shared_init_state(); |
aoqi@0 | 102 | bool compute_shared_has_subklass(); |
aoqi@0 | 103 | int compute_nonstatic_fields(); |
aoqi@0 | 104 | GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); |
aoqi@0 | 105 | |
aoqi@0 | 106 | // Update the init_state for shared klasses |
aoqi@0 | 107 | void update_if_shared(InstanceKlass::ClassState expected) { |
aoqi@0 | 108 | if (_is_shared && _init_state != expected) { |
aoqi@0 | 109 | if (is_loaded()) compute_shared_init_state(); |
aoqi@0 | 110 | } |
aoqi@0 | 111 | } |
aoqi@0 | 112 | |
aoqi@0 | 113 | public: |
aoqi@0 | 114 | // Has this klass been initialized? |
aoqi@0 | 115 | bool is_initialized() { |
aoqi@0 | 116 | update_if_shared(InstanceKlass::fully_initialized); |
aoqi@0 | 117 | return _init_state == InstanceKlass::fully_initialized; |
aoqi@0 | 118 | } |
aoqi@0 | 119 | // Is this klass being initialized? |
aoqi@0 | 120 | bool is_being_initialized() { |
aoqi@0 | 121 | update_if_shared(InstanceKlass::being_initialized); |
aoqi@0 | 122 | return _init_state == InstanceKlass::being_initialized; |
aoqi@0 | 123 | } |
aoqi@0 | 124 | // Has this klass been linked? |
aoqi@0 | 125 | bool is_linked() { |
aoqi@0 | 126 | update_if_shared(InstanceKlass::linked); |
aoqi@0 | 127 | return _init_state >= InstanceKlass::linked; |
aoqi@0 | 128 | } |
aoqi@0 | 129 | |
aoqi@0 | 130 | // General klass information. |
aoqi@0 | 131 | ciFlags flags() { |
aoqi@0 | 132 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 133 | return _flags; |
aoqi@0 | 134 | } |
aoqi@0 | 135 | bool has_finalizer() { |
aoqi@0 | 136 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 137 | return _has_finalizer; } |
aoqi@0 | 138 | bool has_subklass() { |
aoqi@0 | 139 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 140 | if (_is_shared && !_has_subklass) { |
aoqi@0 | 141 | if (flags().is_final()) { |
aoqi@0 | 142 | return false; |
aoqi@0 | 143 | } else { |
aoqi@0 | 144 | return compute_shared_has_subklass(); |
aoqi@0 | 145 | } |
aoqi@0 | 146 | } |
aoqi@0 | 147 | return _has_subklass; |
aoqi@0 | 148 | } |
aoqi@0 | 149 | jint size_helper() { |
aoqi@0 | 150 | return (Klass::layout_helper_size_in_bytes(layout_helper()) |
aoqi@0 | 151 | >> LogHeapWordSize); |
aoqi@0 | 152 | } |
aoqi@0 | 153 | jint nonstatic_field_size() { |
aoqi@0 | 154 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 155 | return _nonstatic_field_size; } |
aoqi@0 | 156 | jint has_nonstatic_fields() { |
aoqi@0 | 157 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 158 | return _has_nonstatic_fields; } |
aoqi@0 | 159 | jint nonstatic_oop_map_size() { |
aoqi@0 | 160 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 161 | return _nonstatic_oop_map_size; } |
aoqi@0 | 162 | ciInstanceKlass* super(); |
aoqi@0 | 163 | jint nof_implementors() { |
aoqi@0 | 164 | ciInstanceKlass* impl; |
aoqi@0 | 165 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 166 | impl = implementor(); |
aoqi@0 | 167 | if (impl == NULL) { |
aoqi@0 | 168 | return 0; |
aoqi@0 | 169 | } else if (impl != this) { |
aoqi@0 | 170 | return 1; |
aoqi@0 | 171 | } else { |
aoqi@0 | 172 | return 2; |
aoqi@0 | 173 | } |
aoqi@0 | 174 | } |
aoqi@0 | 175 | |
aoqi@0 | 176 | bool has_default_methods() { |
aoqi@0 | 177 | assert(is_loaded(), "must be loaded"); |
aoqi@0 | 178 | return _has_default_methods; |
aoqi@0 | 179 | } |
aoqi@0 | 180 | |
coleenp@8739 | 181 | bool is_anonymous() { |
coleenp@8739 | 182 | return _is_anonymous; |
coleenp@8739 | 183 | } |
coleenp@8739 | 184 | |
aoqi@0 | 185 | ciInstanceKlass* get_canonical_holder(int offset); |
aoqi@0 | 186 | ciField* get_field_by_offset(int field_offset, bool is_static); |
aoqi@0 | 187 | ciField* get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static); |
aoqi@0 | 188 | |
aoqi@0 | 189 | GrowableArray<ciField*>* non_static_fields(); |
aoqi@0 | 190 | |
aoqi@0 | 191 | // total number of nonstatic fields (including inherited): |
aoqi@0 | 192 | int nof_nonstatic_fields() { |
aoqi@0 | 193 | if (_nonstatic_fields == NULL) |
aoqi@0 | 194 | return compute_nonstatic_fields(); |
aoqi@0 | 195 | else |
aoqi@0 | 196 | return _nonstatic_fields->length(); |
aoqi@0 | 197 | } |
aoqi@0 | 198 | // nth nonstatic field (presented by ascending address) |
aoqi@0 | 199 | ciField* nonstatic_field_at(int i) { |
aoqi@0 | 200 | assert(_nonstatic_fields != NULL, ""); |
aoqi@0 | 201 | return _nonstatic_fields->at(i); |
aoqi@0 | 202 | } |
aoqi@0 | 203 | |
aoqi@0 | 204 | ciInstanceKlass* unique_concrete_subklass(); |
aoqi@0 | 205 | bool has_finalizable_subclass(); |
aoqi@0 | 206 | |
aoqi@0 | 207 | bool contains_field_offset(int offset) { |
aoqi@0 | 208 | return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
aoqi@0 | 209 | } |
aoqi@0 | 210 | |
aoqi@0 | 211 | // Get the instance of java.lang.Class corresponding to |
aoqi@0 | 212 | // this klass. This instance is used for locking of |
aoqi@0 | 213 | // synchronized static methods of this klass. |
aoqi@0 | 214 | ciInstance* java_mirror(); |
aoqi@0 | 215 | |
aoqi@0 | 216 | // Java access flags |
aoqi@0 | 217 | bool is_public () { return flags().is_public(); } |
aoqi@0 | 218 | bool is_final () { return flags().is_final(); } |
aoqi@0 | 219 | bool is_super () { return flags().is_super(); } |
aoqi@0 | 220 | bool is_interface () { return flags().is_interface(); } |
aoqi@0 | 221 | bool is_abstract () { return flags().is_abstract(); } |
aoqi@0 | 222 | |
aoqi@0 | 223 | ciMethod* find_method(ciSymbol* name, ciSymbol* signature); |
aoqi@0 | 224 | // Note: To find a method from name and type strings, use ciSymbol::make, |
aoqi@0 | 225 | // but consider adding to vmSymbols.hpp instead. |
aoqi@0 | 226 | |
aoqi@0 | 227 | bool is_leaf_type(); |
aoqi@0 | 228 | ciInstanceKlass* implementor(); |
aoqi@0 | 229 | |
aoqi@0 | 230 | // Is the defining class loader of this class the default loader? |
aoqi@0 | 231 | bool uses_default_loader() const; |
aoqi@0 | 232 | |
aoqi@0 | 233 | bool is_java_lang_Object() const; |
aoqi@0 | 234 | |
aoqi@0 | 235 | BasicType box_klass_type() const; |
aoqi@0 | 236 | bool is_box_klass() const; |
aoqi@0 | 237 | bool is_boxed_value_offset(int offset) const; |
aoqi@0 | 238 | |
aoqi@0 | 239 | // Is this klass in the given package? |
aoqi@0 | 240 | bool is_in_package(const char* packagename) { |
aoqi@0 | 241 | return is_in_package(packagename, (int) strlen(packagename)); |
aoqi@0 | 242 | } |
aoqi@0 | 243 | bool is_in_package(const char* packagename, int len); |
aoqi@0 | 244 | |
aoqi@0 | 245 | // What kind of ciObject is this? |
aoqi@0 | 246 | bool is_instance_klass() const { return true; } |
aoqi@0 | 247 | bool is_java_klass() const { return true; } |
aoqi@0 | 248 | |
aoqi@0 | 249 | virtual ciKlass* exact_klass() { |
aoqi@0 | 250 | if (is_loaded() && is_final() && !is_interface()) { |
aoqi@0 | 251 | return this; |
aoqi@0 | 252 | } |
aoqi@0 | 253 | return NULL; |
aoqi@0 | 254 | } |
aoqi@0 | 255 | |
coleenp@8739 | 256 | ciInstanceKlass* host_klass(); |
coleenp@8739 | 257 | |
aoqi@0 | 258 | // Dump the current state of this klass for compilation replay. |
aoqi@0 | 259 | virtual void dump_replay_data(outputStream* out); |
aoqi@0 | 260 | }; |
aoqi@0 | 261 | |
aoqi@0 | 262 | #endif // SHARE_VM_CI_CIINSTANCEKLASS_HPP |