Wed, 17 Sep 2008 12:59:52 -0700
6384206: Phis which are later unneeded are impairing our ability to inline based on static types
Reviewed-by: rasbold, jrose
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // ciInstanceKlass |
duke@435 | 26 | // |
duke@435 | 27 | // This class represents a klassOop in the HotSpot virtual machine |
duke@435 | 28 | // whose Klass part is an instanceKlass. It may or may not |
duke@435 | 29 | // be loaded. |
duke@435 | 30 | class ciInstanceKlass : public ciKlass { |
duke@435 | 31 | CI_PACKAGE_ACCESS |
duke@435 | 32 | friend class ciEnv; |
duke@435 | 33 | friend class ciMethod; |
duke@435 | 34 | friend class ciField; |
duke@435 | 35 | friend class ciBytecodeStream; |
duke@435 | 36 | |
duke@435 | 37 | private: |
duke@435 | 38 | jobject _loader; |
duke@435 | 39 | jobject _protection_domain; |
duke@435 | 40 | |
coleenp@548 | 41 | bool _is_shared; |
duke@435 | 42 | bool _is_initialized; |
duke@435 | 43 | bool _is_linked; |
duke@435 | 44 | bool _has_finalizer; |
duke@435 | 45 | bool _has_subklass; |
coleenp@548 | 46 | bool _has_nonstatic_fields; |
coleenp@548 | 47 | |
duke@435 | 48 | ciFlags _flags; |
duke@435 | 49 | jint _nonstatic_field_size; |
kvn@479 | 50 | jint _nonstatic_oop_map_size; |
duke@435 | 51 | |
duke@435 | 52 | // Lazy fields get filled in only upon request. |
duke@435 | 53 | ciInstanceKlass* _super; |
duke@435 | 54 | ciInstance* _java_mirror; |
duke@435 | 55 | |
duke@435 | 56 | ciConstantPoolCache* _field_cache; // cached map index->field |
duke@435 | 57 | GrowableArray<ciField*>* _nonstatic_fields; |
duke@435 | 58 | |
duke@435 | 59 | enum { implementors_limit = instanceKlass::implementors_limit }; |
duke@435 | 60 | ciInstanceKlass* _implementors[implementors_limit]; |
duke@435 | 61 | jint _nof_implementors; |
duke@435 | 62 | |
kvn@479 | 63 | GrowableArray<ciField*>* _non_static_fields; |
kvn@479 | 64 | |
duke@435 | 65 | protected: |
duke@435 | 66 | ciInstanceKlass(KlassHandle h_k); |
duke@435 | 67 | ciInstanceKlass(ciSymbol* name, jobject loader, jobject protection_domain); |
duke@435 | 68 | |
duke@435 | 69 | instanceKlass* get_instanceKlass() const { |
duke@435 | 70 | return (instanceKlass*)get_Klass(); |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | oop loader(); |
duke@435 | 74 | jobject loader_handle(); |
duke@435 | 75 | |
duke@435 | 76 | oop protection_domain(); |
duke@435 | 77 | jobject protection_domain_handle(); |
duke@435 | 78 | |
duke@435 | 79 | const char* type_string() { return "ciInstanceKlass"; } |
duke@435 | 80 | |
duke@435 | 81 | void print_impl(outputStream* st); |
duke@435 | 82 | |
duke@435 | 83 | ciConstantPoolCache* field_cache(); |
duke@435 | 84 | |
duke@435 | 85 | bool is_shared() { return _is_shared; } |
duke@435 | 86 | |
duke@435 | 87 | bool compute_shared_is_initialized(); |
duke@435 | 88 | bool compute_shared_is_linked(); |
duke@435 | 89 | bool compute_shared_has_subklass(); |
duke@435 | 90 | int compute_shared_nof_implementors(); |
duke@435 | 91 | int compute_nonstatic_fields(); |
duke@435 | 92 | GrowableArray<ciField*>* compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields); |
duke@435 | 93 | |
duke@435 | 94 | public: |
duke@435 | 95 | // Has this klass been initialized? |
duke@435 | 96 | bool is_initialized() { |
duke@435 | 97 | if (_is_shared && !_is_initialized) { |
duke@435 | 98 | return is_loaded() && compute_shared_is_initialized(); |
duke@435 | 99 | } |
duke@435 | 100 | return _is_initialized; |
duke@435 | 101 | } |
duke@435 | 102 | // Has this klass been linked? |
duke@435 | 103 | bool is_linked() { |
duke@435 | 104 | if (_is_shared && !_is_linked) { |
duke@435 | 105 | return is_loaded() && compute_shared_is_linked(); |
duke@435 | 106 | } |
duke@435 | 107 | return _is_linked; |
duke@435 | 108 | } |
duke@435 | 109 | |
duke@435 | 110 | // General klass information. |
duke@435 | 111 | ciFlags flags() { |
duke@435 | 112 | assert(is_loaded(), "must be loaded"); |
duke@435 | 113 | return _flags; |
duke@435 | 114 | } |
duke@435 | 115 | bool has_finalizer() { |
duke@435 | 116 | assert(is_loaded(), "must be loaded"); |
duke@435 | 117 | return _has_finalizer; } |
duke@435 | 118 | bool has_subklass() { |
duke@435 | 119 | assert(is_loaded(), "must be loaded"); |
duke@435 | 120 | if (_is_shared && !_has_subklass) { |
duke@435 | 121 | if (flags().is_final()) { |
duke@435 | 122 | return false; |
duke@435 | 123 | } else { |
duke@435 | 124 | return compute_shared_has_subklass(); |
duke@435 | 125 | } |
duke@435 | 126 | } |
duke@435 | 127 | return _has_subklass; |
duke@435 | 128 | } |
duke@435 | 129 | jint size_helper() { |
duke@435 | 130 | return (Klass::layout_helper_size_in_bytes(layout_helper()) |
duke@435 | 131 | >> LogHeapWordSize); |
duke@435 | 132 | } |
duke@435 | 133 | jint nonstatic_field_size() { |
duke@435 | 134 | assert(is_loaded(), "must be loaded"); |
duke@435 | 135 | return _nonstatic_field_size; } |
coleenp@548 | 136 | jint has_nonstatic_fields() { |
coleenp@548 | 137 | assert(is_loaded(), "must be loaded"); |
coleenp@548 | 138 | return _has_nonstatic_fields; } |
kvn@479 | 139 | jint nonstatic_oop_map_size() { |
kvn@479 | 140 | assert(is_loaded(), "must be loaded"); |
kvn@479 | 141 | return _nonstatic_oop_map_size; } |
duke@435 | 142 | ciInstanceKlass* super(); |
duke@435 | 143 | jint nof_implementors() { |
duke@435 | 144 | assert(is_loaded(), "must be loaded"); |
duke@435 | 145 | if (_is_shared) return compute_shared_nof_implementors(); |
duke@435 | 146 | return _nof_implementors; |
duke@435 | 147 | } |
duke@435 | 148 | |
duke@435 | 149 | ciInstanceKlass* get_canonical_holder(int offset); |
duke@435 | 150 | ciField* get_field_by_offset(int field_offset, bool is_static); |
kvn@479 | 151 | |
kvn@479 | 152 | GrowableArray<ciField*>* non_static_fields(); |
kvn@479 | 153 | |
duke@435 | 154 | // total number of nonstatic fields (including inherited): |
duke@435 | 155 | int nof_nonstatic_fields() { |
duke@435 | 156 | if (_nonstatic_fields == NULL) |
duke@435 | 157 | return compute_nonstatic_fields(); |
duke@435 | 158 | else |
duke@435 | 159 | return _nonstatic_fields->length(); |
duke@435 | 160 | } |
duke@435 | 161 | // nth nonstatic field (presented by ascending address) |
duke@435 | 162 | ciField* nonstatic_field_at(int i) { |
duke@435 | 163 | assert(_nonstatic_fields != NULL, ""); |
duke@435 | 164 | return _nonstatic_fields->at(i); |
duke@435 | 165 | } |
duke@435 | 166 | |
duke@435 | 167 | ciInstanceKlass* unique_concrete_subklass(); |
duke@435 | 168 | bool has_finalizable_subclass(); |
duke@435 | 169 | |
duke@435 | 170 | bool contains_field_offset(int offset) { |
coleenp@548 | 171 | return instanceOopDesc::contains_field_offset(offset, nonstatic_field_size()); |
duke@435 | 172 | } |
duke@435 | 173 | |
duke@435 | 174 | // Get the instance of java.lang.Class corresponding to |
duke@435 | 175 | // this klass. This instance is used for locking of |
duke@435 | 176 | // synchronized static methods of this klass. |
duke@435 | 177 | ciInstance* java_mirror(); |
duke@435 | 178 | |
duke@435 | 179 | // Java access flags |
duke@435 | 180 | bool is_public () { return flags().is_public(); } |
duke@435 | 181 | bool is_final () { return flags().is_final(); } |
duke@435 | 182 | bool is_super () { return flags().is_super(); } |
duke@435 | 183 | bool is_interface () { return flags().is_interface(); } |
duke@435 | 184 | bool is_abstract () { return flags().is_abstract(); } |
duke@435 | 185 | |
duke@435 | 186 | ciMethod* find_method(ciSymbol* name, ciSymbol* signature); |
duke@435 | 187 | // Note: To find a method from name and type strings, use ciSymbol::make, |
duke@435 | 188 | // but consider adding to vmSymbols.hpp instead. |
duke@435 | 189 | |
duke@435 | 190 | bool is_leaf_type(); |
duke@435 | 191 | ciInstanceKlass* implementor(int n); |
duke@435 | 192 | |
duke@435 | 193 | // Is the defining class loader of this class the default loader? |
duke@435 | 194 | bool uses_default_loader(); |
duke@435 | 195 | |
duke@435 | 196 | bool is_java_lang_Object(); |
duke@435 | 197 | |
duke@435 | 198 | // What kind of ciObject is this? |
duke@435 | 199 | bool is_instance_klass() { return true; } |
duke@435 | 200 | bool is_java_klass() { return true; } |
duke@435 | 201 | }; |