Mon, 06 Aug 2012 15:54:45 -0400
7116786: RFE: Detailed information on VerifyErrors
Summary: Provide additional detail in VerifyError messages
Reviewed-by: sspitsyn, acorn
1 /*
2 * Copyright (c) 2005, 2011, 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.
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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
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23 */
25 #ifndef SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
26 #define SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP
28 #include "oops/constantPoolOop.hpp"
29 #include "utilities/hashtable.hpp"
31 class ResolutionErrorEntry;
33 // ResolutionError objects are used to record errors encountered during
34 // constant pool resolution (JVMS 5.4.3).
36 class ResolutionErrorTable : public Hashtable<constantPoolOop, mtClass> {
38 public:
39 ResolutionErrorTable(int table_size);
41 ResolutionErrorEntry* new_entry(int hash, constantPoolOop pool, int cp_index, Symbol* error);
42 void free_entry(ResolutionErrorEntry *entry);
44 ResolutionErrorEntry* bucket(int i) {
45 return (ResolutionErrorEntry*)Hashtable<constantPoolOop, mtClass>::bucket(i);
46 }
48 ResolutionErrorEntry** bucket_addr(int i) {
49 return (ResolutionErrorEntry**)Hashtable<constantPoolOop, mtClass>::bucket_addr(i);
50 }
52 void add_entry(int index, ResolutionErrorEntry* new_entry) {
53 Hashtable<constantPoolOop, mtClass>::add_entry(index,
54 (HashtableEntry<constantPoolOop, mtClass>*)new_entry);
55 }
57 void add_entry(int index, unsigned int hash,
58 constantPoolHandle pool, int which, Symbol* error);
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);
66 unsigned int compute_hash(constantPoolHandle pool, int cp_index) {
67 return (unsigned int) pool->identity_hash() + cp_index;
68 }
70 // purges unloaded entries from the table
71 void purge_resolution_errors(BoolObjectClosure* is_alive);
73 // GC support.
74 void oops_do(OopClosure* f);
75 };
78 class ResolutionErrorEntry : public HashtableEntry<constantPoolOop, mtClass> {
79 private:
80 int _cp_index;
81 Symbol* _error;
83 public:
84 constantPoolOop pool() const { return (constantPoolOop)literal(); }
85 constantPoolOop* pool_addr() { return (constantPoolOop*)literal_addr(); }
87 int cp_index() const { return _cp_index; }
88 void set_cp_index(int cp_index) { _cp_index = cp_index; }
90 Symbol* error() const { return _error; }
91 void set_error(Symbol* e);
93 ResolutionErrorEntry* next() const {
94 return (ResolutionErrorEntry*)HashtableEntry<constantPoolOop, mtClass>::next();
95 }
97 ResolutionErrorEntry** next_addr() {
98 return (ResolutionErrorEntry**)HashtableEntry<constantPoolOop, mtClass>::next_addr();
99 }
101 // GC support
102 void oops_do(OopClosure* blk);
103 };
105 #endif // SHARE_VM_CLASSFILE_RESOLUTIONERRORS_HPP