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annotate src/share/vm/ci/ciObjectFactory.hpp @ 4001:5eb9169b1a14
7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
Reviewed-by: jrose, never
| author | twisti |
|---|---|
| date | Wed, 12 Oct 2011 21:00:13 -0700 |
| parents | f6f3bb0ee072 |
| children | 04b9a2566eec da91efe96a93 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CI_CIOBJECTFACTORY_HPP |
| 26 #define SHARE_VM_CI_CIOBJECTFACTORY_HPP | |
| 27 | |
| 28 #include "ci/ciClassList.hpp" | |
| 29 #include "ci/ciObject.hpp" | |
| 30 #include "utilities/growableArray.hpp" | |
| 31 | |
| 0 | 32 // ciObjectFactory |
| 33 // | |
| 34 // This class handles requests for the creation of new instances | |
| 35 // of ciObject and its subclasses. It contains a caching mechanism | |
| 36 // which ensures that for each oop, at most one ciObject is created. | |
| 37 // This invariant allows efficient implementation of ciObject. | |
| 38 class ciObjectFactory : public ResourceObj { | |
| 3939 | 39 friend class VMStructs; |
| 40 friend class ciEnv; | |
| 41 | |
| 0 | 42 private: |
| 43 static volatile bool _initialized; | |
| 44 static GrowableArray<ciObject*>* _shared_ci_objects; | |
| 45 static ciSymbol* _shared_ci_symbols[]; | |
| 46 static int _shared_ident_limit; | |
| 47 | |
| 48 Arena* _arena; | |
| 49 GrowableArray<ciObject*>* _ci_objects; | |
| 50 GrowableArray<ciMethod*>* _unloaded_methods; | |
| 51 GrowableArray<ciKlass*>* _unloaded_klasses; | |
| 1602 | 52 GrowableArray<ciInstance*>* _unloaded_instances; |
| 0 | 53 GrowableArray<ciReturnAddress*>* _return_addresses; |
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54 GrowableArray<ciSymbol*>* _symbols; // keep list of symbols created |
| 0 | 55 int _next_ident; |
| 56 | |
| 57 public: | |
| 58 struct NonPermObject : public ResourceObj { | |
| 59 ciObject* _object; | |
| 60 NonPermObject* _next; | |
| 61 | |
| 62 inline NonPermObject(NonPermObject* &bucket, oop key, ciObject* object); | |
| 63 ciObject* object() { return _object; } | |
| 64 NonPermObject* &next() { return _next; } | |
| 65 }; | |
| 66 private: | |
| 67 enum { NON_PERM_BUCKETS = 61 }; | |
| 68 NonPermObject* _non_perm_bucket[NON_PERM_BUCKETS]; | |
| 69 int _non_perm_count; | |
| 70 | |
| 71 int find(oop key, GrowableArray<ciObject*>* objects); | |
| 72 bool is_found_at(int index, oop key, GrowableArray<ciObject*>* objects); | |
| 73 void insert(int index, ciObject* obj, GrowableArray<ciObject*>* objects); | |
| 74 ciObject* create_new_object(oop o); | |
| 75 static bool is_equal(NonPermObject* p, oop key) { | |
| 76 return p->object()->get_oop() == key; | |
| 77 } | |
| 78 | |
| 79 NonPermObject* &find_non_perm(oop key); | |
| 80 void insert_non_perm(NonPermObject* &where, oop key, ciObject* obj); | |
| 81 | |
| 82 void init_ident_of(ciObject* obj); | |
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83 void init_ident_of(ciSymbol* obj); |
| 0 | 84 |
| 85 Arena* arena() { return _arena; } | |
| 86 | |
| 87 void print_contents_impl(); | |
| 88 | |
| 1602 | 89 ciInstance* get_unloaded_instance(ciInstanceKlass* klass); |
| 90 | |
| 0 | 91 public: |
| 92 static bool is_initialized() { return _initialized; } | |
| 93 | |
| 94 static void initialize(); | |
| 95 void init_shared_objects(); | |
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96 void remove_symbols(); |
| 0 | 97 |
| 98 ciObjectFactory(Arena* arena, int expected_size); | |
| 99 | |
| 100 // Get the ciObject corresponding to some oop. | |
| 101 ciObject* get(oop key); | |
| 102 | |
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103 ciSymbol* get_symbol(Symbol* key); |
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104 |
| 0 | 105 // Get the ciSymbol corresponding to one of the vmSymbols. |
| 106 static ciSymbol* vm_symbol_at(int index); | |
| 107 | |
| 108 // Get the ciMethod representing an unloaded/unfound method. | |
| 109 ciMethod* get_unloaded_method(ciInstanceKlass* holder, | |
| 110 ciSymbol* name, | |
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111 ciSymbol* signature, |
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112 ciInstanceKlass* accessor); |
| 0 | 113 |
| 114 // Get a ciKlass representing an unloaded klass. | |
| 115 ciKlass* get_unloaded_klass(ciKlass* accessing_klass, | |
| 116 ciSymbol* name, | |
| 117 bool create_if_not_found); | |
| 118 | |
| 1602 | 119 // Get a ciInstance representing an unresolved klass mirror. |
| 120 ciInstance* get_unloaded_klass_mirror(ciKlass* type); | |
| 121 | |
| 122 // Get a ciInstance representing an unresolved method handle constant. | |
| 123 ciInstance* get_unloaded_method_handle_constant(ciKlass* holder, | |
| 124 ciSymbol* name, | |
| 125 ciSymbol* signature, | |
| 126 int ref_kind); | |
| 127 | |
| 128 // Get a ciInstance representing an unresolved method type constant. | |
| 129 ciInstance* get_unloaded_method_type_constant(ciSymbol* signature); | |
| 130 | |
| 0 | 131 |
| 132 // Get the ciMethodData representing the methodData for a method | |
| 133 // with none. | |
| 134 ciMethodData* get_empty_methodData(); | |
| 135 | |
| 136 ciReturnAddress* get_return_address(int bci); | |
| 137 | |
| 138 void print_contents(); | |
| 139 void print(); | |
| 140 }; | |
| 1972 | 141 |
| 142 #endif // SHARE_VM_CI_CIOBJECTFACTORY_HPP |