1 /*
2 * Copyright (c) 2021, 2023, 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_CDS_LAMBDAPROXYCLASSINFO_HPP
26 #define SHARE_CDS_LAMBDAPROXYCLASSINFO_HPP
27 #include "cds/metaspaceShared.hpp"
28 #include "classfile/javaClasses.hpp"
29 #include "utilities/growableArray.hpp"
30 #include "utilities/resourceHash.hpp"
31
32 class InstanceKlass;
33 class Method;
34 class Symbol;
35 class outputStream;
36
37 class LambdaProxyClassKey {
38 InstanceKlass* _caller_ik;
39 Symbol* _invoked_name;
40 Symbol* _invoked_type;
41 Symbol* _method_type;
42 Method* _member_method;
43 Symbol* _instantiated_method_type;
44
45 public:
46 LambdaProxyClassKey(InstanceKlass* caller_ik,
47 Symbol* invoked_name,
48 Symbol* invoked_type,
49 Symbol* method_type,
50 Method* member_method,
51 Symbol* instantiated_method_type) :
52 _caller_ik(caller_ik),
53 _invoked_name(invoked_name),
54 _invoked_type(invoked_type),
55 _method_type(method_type),
56 _member_method(member_method),
57 _instantiated_method_type(instantiated_method_type) {}
58
59 void metaspace_pointers_do(MetaspaceClosure* it) {
60 it->push(&_caller_ik);
61 it->push(&_invoked_name);
62 it->push(&_invoked_type);
63 it->push(&_method_type);
64 it->push(&_member_method);
65 it->push(&_instantiated_method_type);
66 }
67
68 bool equals(LambdaProxyClassKey const& other) const {
69 return _caller_ik == other._caller_ik &&
70 _invoked_name == other._invoked_name &&
71 _invoked_type == other._invoked_type &&
72 _method_type == other._method_type &&
73 _member_method == other._member_method &&
74 _instantiated_method_type == other._instantiated_method_type;
75 }
76
77 unsigned int hash() const;
78
79 static unsigned int dumptime_hash(Symbol* sym) {
80 if (sym == nullptr) {
81 // _invoked_name maybe null
82 return 0;
83 }
84 return java_lang_String::hash_code((const jbyte*)sym->bytes(), sym->utf8_length());
85 }
86
87 unsigned int dumptime_hash() const {
88 return dumptime_hash(_caller_ik->name()) +
89 dumptime_hash(_invoked_name) +
90 dumptime_hash(_invoked_type) +
91 dumptime_hash(_method_type) +
92 dumptime_hash(_instantiated_method_type);
93 }
94
95 static inline unsigned int DUMPTIME_HASH(LambdaProxyClassKey const& key) {
96 return (key.dumptime_hash());
97 }
98
99 static inline bool DUMPTIME_EQUALS(
100 LambdaProxyClassKey const& k1, LambdaProxyClassKey const& k2) {
101 return (k1.equals(k2));
102 }
103
104 InstanceKlass* caller_ik() const { return _caller_ik; }
105
106 void init_for_archive(LambdaProxyClassKey& dumptime_key);
107
108 #ifndef PRODUCT
109 void print_on(outputStream* st) const;
110 #endif
111 };
112
113 class DumpTimeLambdaProxyClassInfo {
114 public:
115 GrowableArray<InstanceKlass*>* _proxy_klasses;
116 DumpTimeLambdaProxyClassInfo() : _proxy_klasses(nullptr) {}
117 DumpTimeLambdaProxyClassInfo& operator=(const DumpTimeLambdaProxyClassInfo&) = delete;
118 ~DumpTimeLambdaProxyClassInfo();
119
120 void add_proxy_klass(InstanceKlass* proxy_klass) {
121 if (_proxy_klasses == nullptr) {
122 _proxy_klasses = new (mtClassShared) GrowableArray<InstanceKlass*>(5, mtClassShared);
123 }
124 assert(_proxy_klasses != nullptr, "sanity");
125 // Try to preserve the order. get_shared_lambda_proxy_class returns shared classes in reverse order.
126 _proxy_klasses->insert_before(0, proxy_klass);
127 }
128
129 void metaspace_pointers_do(MetaspaceClosure* it) {
130 for (int i=0; i<_proxy_klasses->length(); i++) {
131 it->push(_proxy_klasses->adr_at(i));
132 }
133 }
134 };
135
136 class RunTimeLambdaProxyClassInfo {
137 LambdaProxyClassKey _key;
138 InstanceKlass* _proxy_klass_head;
139 public:
140 RunTimeLambdaProxyClassInfo(LambdaProxyClassKey key, InstanceKlass* proxy_klass_head) :
141 _key(key), _proxy_klass_head(proxy_klass_head) {}
142
143 InstanceKlass* proxy_klass_head() const { return _proxy_klass_head; }
144
145 // Used by LambdaProxyClassDictionary to implement OffsetCompactHashtable::EQUALS
146 static inline bool EQUALS(
147 const RunTimeLambdaProxyClassInfo* value, LambdaProxyClassKey* key, int len_unused) {
148 return (value->_key.equals(*key));
149 }
150 void init(LambdaProxyClassKey& key, DumpTimeLambdaProxyClassInfo& info);
151
152 unsigned int hash() const {
153 return _key.hash();
154 }
155 LambdaProxyClassKey key() const {
156 return _key;
157 }
158 #ifndef PRODUCT
159 void print_on(outputStream* st) const;
160 #endif
161 };
162
163 class DumpTimeLambdaProxyClassDictionary
164 : public ResourceHashtable<LambdaProxyClassKey,
165 DumpTimeLambdaProxyClassInfo,
166 137, // prime number
167 AnyObj::C_HEAP,
168 mtClassShared,
169 LambdaProxyClassKey::DUMPTIME_HASH,
170 LambdaProxyClassKey::DUMPTIME_EQUALS> {
171 public:
172 DumpTimeLambdaProxyClassDictionary() : _count(0) {}
173 int _count;
174 };
175
176 class LambdaProxyClassDictionary : public OffsetCompactHashtable<
177 LambdaProxyClassKey*,
178 const RunTimeLambdaProxyClassInfo*,
179 RunTimeLambdaProxyClassInfo::EQUALS> {};
180
181 #endif // SHARE_CDS_LAMBDAPROXYCLASSINFO_HPP