| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_CI_CIOBJECTFACTORY_HPP |
| #define SHARE_VM_CI_CIOBJECTFACTORY_HPP |
| |
| #include "ci/ciClassList.hpp" |
| #include "ci/ciObject.hpp" |
| #include "utilities/growableArray.hpp" |
| |
| // ciObjectFactory |
| // |
| // This class handles requests for the creation of new instances |
| // of ciObject and its subclasses. It contains a caching mechanism |
| // which ensures that for each oop, at most one ciObject is created. |
| // This invariant allows efficient implementation of ciObject. |
| class ciObjectFactory : public ResourceObj { |
| friend class VMStructs; |
| friend class ciEnv; |
| |
| private: |
| static volatile bool _initialized; |
| static GrowableArray<ciMetadata*>* _shared_ci_metadata; |
| static ciSymbol* _shared_ci_symbols[]; |
| static int _shared_ident_limit; |
| |
| Arena* _arena; |
| GrowableArray<ciMetadata*>* _ci_metadata; |
| GrowableArray<ciMethod*>* _unloaded_methods; |
| GrowableArray<ciKlass*>* _unloaded_klasses; |
| GrowableArray<ciInstance*>* _unloaded_instances; |
| GrowableArray<ciReturnAddress*>* _return_addresses; |
| GrowableArray<ciSymbol*>* _symbols; // keep list of symbols created |
| int _next_ident; |
| |
| public: |
| struct NonPermObject : public ResourceObj { |
| ciObject* _object; |
| NonPermObject* _next; |
| |
| inline NonPermObject(NonPermObject* &bucket, oop key, ciObject* object); |
| ciObject* object() { return _object; } |
| NonPermObject* &next() { return _next; } |
| }; |
| private: |
| enum { NON_PERM_BUCKETS = 61 }; |
| NonPermObject* _non_perm_bucket[NON_PERM_BUCKETS]; |
| int _non_perm_count; |
| |
| static int metadata_compare(Metadata* const& key, ciMetadata* const& elt); |
| |
| ciObject* create_new_object(oop o); |
| ciMetadata* create_new_metadata(Metadata* o); |
| |
| void ensure_metadata_alive(ciMetadata* m); |
| |
| static bool is_equal(NonPermObject* p, oop key) { |
| return p->object()->get_oop() == key; |
| } |
| |
| NonPermObject* &find_non_perm(oop key); |
| void insert_non_perm(NonPermObject* &where, oop key, ciObject* obj); |
| |
| void init_ident_of(ciBaseObject* obj); |
| |
| Arena* arena() { return _arena; } |
| |
| void print_contents_impl(); |
| |
| ciInstance* get_unloaded_instance(ciInstanceKlass* klass); |
| |
| public: |
| static bool is_initialized() { return _initialized; } |
| |
| static void initialize(); |
| void init_shared_objects(); |
| void remove_symbols(); |
| |
| ciObjectFactory(Arena* arena, int expected_size); |
| |
| // Get the ciObject corresponding to some oop. |
| ciObject* get(oop key); |
| ciMetadata* get_metadata(Metadata* key); |
| ciSymbol* get_symbol(Symbol* key); |
| |
| // Get the ciSymbol corresponding to one of the vmSymbols. |
| static ciSymbol* vm_symbol_at(int index); |
| |
| // Get the ciMethod representing an unloaded/unfound method. |
| ciMethod* get_unloaded_method(ciInstanceKlass* holder, |
| ciSymbol* name, |
| ciSymbol* signature, |
| ciInstanceKlass* accessor); |
| |
| // Get a ciKlass representing an unloaded klass. |
| ciKlass* get_unloaded_klass(ciKlass* accessing_klass, |
| ciSymbol* name, |
| bool create_if_not_found); |
| |
| // Get a ciInstance representing an unresolved klass mirror. |
| ciInstance* get_unloaded_klass_mirror(ciKlass* type); |
| |
| // Get a ciInstance representing an unresolved method handle constant. |
| ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, |
| ciSymbol* name, |
| ciSymbol* signature, |
| int ref_kind); |
| |
| // Get a ciInstance representing an unresolved method type constant. |
| ciInstance* get_unloaded_method_type_constant(ciSymbol* signature); |
| |
| |
| ciInstance* get_unloaded_object_constant(); |
| |
| // Get the ciMethodData representing the methodData for a method |
| // with none. |
| ciMethodData* get_empty_methodData(); |
| |
| ciReturnAddress* get_return_address(int bci); |
| |
| GrowableArray<ciMetadata*>* get_ci_metadata() const { return _ci_metadata; } |
| // RedefineClasses support |
| void metadata_do(void f(Metadata*)); |
| |
| void print_contents(); |
| void print(); |
| }; |
| |
| #endif // SHARE_VM_CI_CIOBJECTFACTORY_HPP |