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comparison src/share/vm/classfile/resolutionErrors.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 class ResolutionErrorEntry;
26
27 // ResolutionError objects are used to record errors encountered during
28 // constant pool resolution (JVMS 5.4.3).
29
30 class ResolutionErrorTable : public Hashtable {
31
32 public:
33 ResolutionErrorTable(int table_size);
34
35 ResolutionErrorEntry* new_entry(int hash, constantPoolOop pool, int cp_index, symbolOop error);
36
37 ResolutionErrorEntry* bucket(int i) {
38 return (ResolutionErrorEntry*)Hashtable::bucket(i);
39 }
40
41 ResolutionErrorEntry** bucket_addr(int i) {
42 return (ResolutionErrorEntry**)Hashtable::bucket_addr(i);
43 }
44
45 void add_entry(int index, ResolutionErrorEntry* new_entry) {
46 Hashtable::add_entry(index, (HashtableEntry*)new_entry);
47 }
48
49 void add_entry(int index, unsigned int hash,
50 constantPoolHandle pool, int which, symbolHandle error);
51
52
53 // find error given the constant pool and constant pool index
54 ResolutionErrorEntry* find_entry(int index, unsigned int hash,
55 constantPoolHandle pool, int cp_index);
56
57
58 unsigned int compute_hash(constantPoolHandle pool, int cp_index) {
59 return (unsigned int) pool->identity_hash() + cp_index;
60 }
61
62 // purges unloaded entries from the table
63 void purge_resolution_errors(BoolObjectClosure* is_alive);
64
65 // this table keeps symbolOops alive
66 void always_strong_classes_do(OopClosure* blk);
67
68 // GC support.
69 void oops_do(OopClosure* f);
70 };
71
72
73 class ResolutionErrorEntry : public HashtableEntry {
74 private:
75 int _cp_index;
76 symbolOop _error;
77
78 public:
79 constantPoolOop pool() const { return (constantPoolOop)literal(); }
80 constantPoolOop* pool_addr() { return (constantPoolOop*)literal_addr(); }
81
82 int cp_index() const { return _cp_index; }
83 void set_cp_index(int cp_index) { _cp_index = cp_index; }
84
85 symbolOop error() const { return _error; }
86 void set_error(symbolOop e) { _error = e; }
87 symbolOop* error_addr() { return &_error; }
88
89 ResolutionErrorEntry* next() const {
90 return (ResolutionErrorEntry*)HashtableEntry::next();
91 }
92
93 ResolutionErrorEntry** next_addr() {
94 return (ResolutionErrorEntry**)HashtableEntry::next_addr();
95 }
96
97 // GC support
98 void oops_do(OopClosure* blk);
99 };