Mercurial > hg > truffle
view src/share/vm/ci/ciObjectFactory.hpp @ 3273:df22fe9c5a93
Merge
author | coleenp |
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date | Wed, 27 Apr 2011 17:25:45 -0700 |
parents | 1d1603768966 |
children | 0654ee04b214 f6f3bb0ee072 |
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/* * Copyright (c) 1999, 2011, 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 { private: static volatile bool _initialized; static GrowableArray<ciObject*>* _shared_ci_objects; static ciSymbol* _shared_ci_symbols[]; static int _shared_ident_limit; Arena* _arena; GrowableArray<ciObject*>* _ci_objects; 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; int find(oop key, GrowableArray<ciObject*>* objects); bool is_found_at(int index, oop key, GrowableArray<ciObject*>* objects); void insert(int index, ciObject* obj, GrowableArray<ciObject*>* objects); ciObject* create_new_object(oop o); 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(ciObject* obj); void init_ident_of(ciSymbol* 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); 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); // 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); // Get the ciMethodData representing the methodData for a method // with none. ciMethodData* get_empty_methodData(); ciReturnAddress* get_return_address(int bci); void print_contents(); void print(); }; #endif // SHARE_VM_CI_CIOBJECTFACTORY_HPP