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comparison: src/share/vm/classfile/resolutionErrors.hpp
src/share/vm/classfile/resolutionErrors.hpp
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| 1 /* | |
| 2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. | |
| 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 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP | |
| 26 #define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP | |
| 27 | |
| 28 #include "oops/constantPool.hpp" | |
| 29 #include "utilities/hashtable.hpp" | |
| 30 | |
| 31 class ResolutionErrorEntry; | |
| 32 | |
| 33 // ResolutionError objects are used to record errors encountered during | |
| 34 // constant pool resolution (JVMS 5.4.3). | |
| 35 | |
| 36 class ResolutionErrorTable : public Hashtable<ConstantPool*, mtClass> { | |
| 37 | |
| 38 public: | |
| 39 ResolutionErrorTable(int table_size); | |
| 40 | |
| 41 ResolutionErrorEntry* new_entry(int hash, ConstantPool* pool, int cp_index, Symbol* error); | |
| 42 void free_entry(ResolutionErrorEntry *entry); | |
| 43 | |
| 44 ResolutionErrorEntry* bucket(int i) { | |
| 45 return (ResolutionErrorEntry*)Hashtable<ConstantPool*, mtClass>::bucket(i); | |
| 46 } | |
| 47 | |
| 48 ResolutionErrorEntry** bucket_addr(int i) { | |
| 49 return (ResolutionErrorEntry**)Hashtable<ConstantPool*, mtClass>::bucket_addr(i); | |
| 50 } | |
| 51 | |
| 52 void add_entry(int index, ResolutionErrorEntry* new_entry) { | |
| 53 Hashtable<ConstantPool*, mtClass>::add_entry(index, | |
| 54 (HashtableEntry<ConstantPool*, mtClass>*)new_entry); | |
| 55 } | |
| 56 | |
| 57 void add_entry(int index, unsigned int hash, | |
| 58 constantPoolHandle pool, int which, Symbol* error); | |
| 59 | |
| 60 | |
| 61 // find error given the constant pool and constant pool index | |
| 62 ResolutionErrorEntry* find_entry(int index, unsigned int hash, | |
| 63 constantPoolHandle pool, int cp_index); | |
| 64 | |
| 65 | |
| 66 unsigned int compute_hash(constantPoolHandle pool, int cp_index) { | |
| 67 return (unsigned int) pool->identity_hash() + cp_index; | |
| 68 } | |
| 69 | |
| 70 // purges unloaded entries from the table | |
| 71 void purge_resolution_errors(); | |
| 72 | |
| 73 // RedefineClasses support - remove obsolete constant pool entry | |
| 74 void delete_entry(ConstantPool* c); | |
| 75 }; | |
| 76 | |
| 77 | |
| 78 class ResolutionErrorEntry : public HashtableEntry<ConstantPool*, mtClass> { | |
| 79 private: | |
| 80 int _cp_index; | |
| 81 Symbol* _error; | |
| 82 | |
| 83 public: | |
| 84 ConstantPool* pool() const { return (ConstantPool*)literal(); } | |
| 85 ConstantPool** pool_addr() { return (ConstantPool**)literal_addr(); } | |
| 86 | |
| 87 int cp_index() const { return _cp_index; } | |
| 88 void set_cp_index(int cp_index) { _cp_index = cp_index; } | |
| 89 | |
| 90 Symbol* error() const { return _error; } | |
| 91 void set_error(Symbol* e); | |
| 92 | |
| 93 ResolutionErrorEntry* next() const { | |
| 94 return (ResolutionErrorEntry*)HashtableEntry<ConstantPool*, mtClass>::next(); | |
| 95 } | |
| 96 | |
| 97 ResolutionErrorEntry** next_addr() { | |
| 98 return (ResolutionErrorEntry**)HashtableEntry<ConstantPool*, mtClass>::next_addr(); | |
| 99 } | |
| 100 }; | |
| 101 | |
| 102 #endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP |
