Mercurial > hg > truffle
annotate src/share/vm/classfile/loaderConstraints.hpp @ 1294:7de45b5044c3
6932270: Allow Java's ELF symtab reader to use separate debuginfo files
Reviewed-by: never
Contributed-by: Andrew Haley <aph@redhat.com>
author | never |
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date | Tue, 09 Mar 2010 11:02:39 -0800 |
parents | 38836cf1d8d2 |
children | 09ac706c2623 |
rev | line source |
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0 | 1 /* |
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2 * Copyright 2003-2009 Sun Microsystems, Inc. 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 * | |
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 LoaderConstraintEntry; | |
26 | |
27 class LoaderConstraintTable : public Hashtable { | |
28 friend class VMStructs; | |
29 private: | |
30 | |
31 enum Constants { | |
32 _loader_constraint_size = 107, // number of entries in constraint table | |
33 _nof_buckets = 1009 // number of buckets in hash table | |
34 }; | |
35 | |
36 LoaderConstraintEntry** find_loader_constraint(symbolHandle name, | |
37 Handle loader); | |
38 | |
39 public: | |
40 | |
41 LoaderConstraintTable(int nof_buckets); | |
42 | |
43 LoaderConstraintEntry* new_entry(unsigned int hash, symbolOop name, | |
44 klassOop klass, int num_loaders, | |
45 int max_loaders); | |
46 | |
47 LoaderConstraintEntry* bucket(int i) { | |
48 return (LoaderConstraintEntry*)Hashtable::bucket(i); | |
49 } | |
50 | |
51 LoaderConstraintEntry** bucket_addr(int i) { | |
52 return (LoaderConstraintEntry**)Hashtable::bucket_addr(i); | |
53 } | |
54 | |
55 // GC support | |
56 void oops_do(OopClosure* f); | |
57 void always_strong_classes_do(OopClosure* blk); | |
58 | |
59 // Check class loader constraints | |
60 bool add_entry(symbolHandle name, klassOop klass1, Handle loader1, | |
61 klassOop klass2, Handle loader2); | |
62 | |
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63 // Note: The main entry point for this module is via SystemDictionary. |
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64 // SystemDictionary::check_signature_loaders(symbolHandle signature, |
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65 // Handle loader1, Handle loader2, |
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66 // bool is_method, TRAPS) |
0 | 67 |
68 klassOop find_constrained_klass(symbolHandle name, Handle loader); | |
69 klassOop find_constrained_elem_klass(symbolHandle name, symbolHandle elem_name, | |
70 Handle loader, TRAPS); | |
71 | |
72 | |
73 // Class loader constraints | |
74 | |
75 void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree); | |
76 void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader, | |
77 klassOop klass); | |
78 void merge_loader_constraints(LoaderConstraintEntry** pp1, | |
79 LoaderConstraintEntry** pp2, klassOop klass); | |
80 | |
81 bool check_or_update(instanceKlassHandle k, Handle loader, | |
82 symbolHandle name); | |
83 | |
84 | |
85 void purge_loader_constraints(BoolObjectClosure* is_alive); | |
86 | |
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87 void verify(Dictionary* dictionary, PlaceholderTable* placeholders); |
0 | 88 #ifndef PRODUCT |
89 void print(); | |
90 #endif | |
91 }; | |
92 | |
93 class LoaderConstraintEntry : public HashtableEntry { | |
94 friend class VMStructs; | |
95 private: | |
96 symbolOop _name; // class name | |
97 int _num_loaders; | |
98 int _max_loaders; | |
99 oop* _loaders; // initiating loaders | |
100 | |
101 public: | |
102 | |
103 klassOop klass() { return (klassOop)literal(); } | |
104 klassOop* klass_addr() { return (klassOop*)literal_addr(); } | |
105 void set_klass(klassOop k) { set_literal(k); } | |
106 | |
107 LoaderConstraintEntry* next() { | |
108 return (LoaderConstraintEntry*)HashtableEntry::next(); | |
109 } | |
110 | |
111 LoaderConstraintEntry** next_addr() { | |
112 return (LoaderConstraintEntry**)HashtableEntry::next_addr(); | |
113 } | |
114 void set_next(LoaderConstraintEntry* next) { | |
115 HashtableEntry::set_next(next); | |
116 } | |
117 | |
118 symbolOop name() { return _name; } | |
119 symbolOop* name_addr() { return &_name; } | |
120 void set_name(symbolOop name) { _name = name; } | |
121 | |
122 int num_loaders() { return _num_loaders; } | |
123 void set_num_loaders(int i) { _num_loaders = i; } | |
124 | |
125 int max_loaders() { return _max_loaders; } | |
126 void set_max_loaders(int i) { _max_loaders = i; } | |
127 | |
128 oop* loaders() { return _loaders; } | |
129 void set_loaders(oop* loaders) { _loaders = loaders; } | |
130 | |
131 oop loader(int i) { return _loaders[i]; } | |
132 oop* loader_addr(int i) { return &_loaders[i]; } | |
133 void set_loader(int i, oop p) { _loaders[i] = p; } | |
134 | |
135 }; |