1 /*
2 * Copyright (c) 2021, 2024, 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 Symbol* invoked_name() const { return _invoked_name; }
106 Symbol* invoked_type() const { return _invoked_type; }
107 Symbol* method_type() const { return _method_type; }
108 Method* member_method() const { return _member_method; }
109 Symbol* instantiated_method_type() const { return _instantiated_method_type; }
110
111 #ifndef PRODUCT
112 void print_on(outputStream* st) const;
113 #endif
114 };
115
116 class RunTimeLambdaProxyClassKey {
117 u4 _caller_ik;
118 u4 _invoked_name;
119 u4 _invoked_type;
120 u4 _method_type;
121 u4 _member_method;
122 u4 _instantiated_method_type;
123
124 RunTimeLambdaProxyClassKey(u4 caller_ik,
125 u4 invoked_name,
126 u4 invoked_type,
127 u4 method_type,
128 u4 member_method,
129 u4 instantiated_method_type) :
130 _caller_ik(caller_ik),
131 _invoked_name(invoked_name),
132 _invoked_type(invoked_type),
133 _method_type(method_type),
134 _member_method(member_method),
135 _instantiated_method_type(instantiated_method_type) {}
136
137 public:
138 static RunTimeLambdaProxyClassKey init_for_dumptime(LambdaProxyClassKey& key) {
139 assert(ArchiveBuilder::is_active(), "sanity");
140 ArchiveBuilder* b = ArchiveBuilder::current();
141
142 u4 caller_ik = b->any_to_offset_u4(key.caller_ik());
143 u4 invoked_name = b->any_to_offset_u4(key.invoked_name());
144 u4 invoked_type = b->any_to_offset_u4(key.invoked_type());
145 u4 method_type = b->any_to_offset_u4(key.method_type());
146 u4 member_method = b->any_to_offset_u4(key.member_method());
147 u4 instantiated_method_type = b->any_to_offset_u4(key.instantiated_method_type());
148
149 return RunTimeLambdaProxyClassKey(caller_ik, invoked_name, invoked_type, method_type,
150 member_method, instantiated_method_type);
151 }
152
153 static RunTimeLambdaProxyClassKey init_for_runtime(InstanceKlass* caller_ik,
154 Symbol* invoked_name,
155 Symbol* invoked_type,
156 Symbol* method_type,
157 Method* member_method,
158 Symbol* instantiated_method_type) {
159 // All parameters must be in shared space, or else you'd get an assert in
160 // ArchiveUtils::to_offset().
161 return RunTimeLambdaProxyClassKey(ArchiveUtils::to_offset(caller_ik),
162 ArchiveUtils::to_offset(invoked_name),
163 ArchiveUtils::to_offset(invoked_type),
164 ArchiveUtils::to_offset(method_type),
165 ArchiveUtils::to_offset(member_method),
166 ArchiveUtils::to_offset(instantiated_method_type));
167 }
168
169 unsigned int hash() const;
170 bool equals(RunTimeLambdaProxyClassKey const& other) const {
171 return _caller_ik == other._caller_ik &&
172 _invoked_name == other._invoked_name &&
173 _invoked_type == other._invoked_type &&
174 _method_type == other._method_type &&
175 _member_method == other._member_method &&
176 _instantiated_method_type == other._instantiated_method_type;
177 }
178
179 #ifndef PRODUCT
180 void print_on(outputStream* st) const;
181 #endif
182 };
183
184 class DumpTimeLambdaProxyClassInfo {
185 public:
186 GrowableArray<InstanceKlass*>* _proxy_klasses;
187 DumpTimeLambdaProxyClassInfo() : _proxy_klasses(nullptr) {}
188 DumpTimeLambdaProxyClassInfo& operator=(const DumpTimeLambdaProxyClassInfo&) = delete;
189 ~DumpTimeLambdaProxyClassInfo();
190
191 void add_proxy_klass(InstanceKlass* proxy_klass) {
192 if (_proxy_klasses == nullptr) {
193 _proxy_klasses = new (mtClassShared) GrowableArray<InstanceKlass*>(5, mtClassShared);
194 }
195 assert(_proxy_klasses != nullptr, "sanity");
196 // Try to preserve the order. get_shared_lambda_proxy_class returns shared classes in reverse order.
197 _proxy_klasses->insert_before(0, proxy_klass);
198 }
199
200 void metaspace_pointers_do(MetaspaceClosure* it) {
201 for (int i=0; i<_proxy_klasses->length(); i++) {
202 it->push(_proxy_klasses->adr_at(i));
203 }
204 }
205 };
206
207 class RunTimeLambdaProxyClassInfo {
208 RunTimeLambdaProxyClassKey _key;
209 InstanceKlass* _proxy_klass_head;
210 public:
211 RunTimeLambdaProxyClassInfo(RunTimeLambdaProxyClassKey key, InstanceKlass* proxy_klass_head) :
212 _key(key), _proxy_klass_head(proxy_klass_head) {}
213
214 InstanceKlass* proxy_klass_head() const { return _proxy_klass_head; }
215
216 // Used by LambdaProxyClassDictionary to implement OffsetCompactHashtable::EQUALS
217 static inline bool EQUALS(
218 const RunTimeLambdaProxyClassInfo* value, RunTimeLambdaProxyClassKey* key, int len_unused) {
219 return (value->_key.equals(*key));
220 }
221 void init(LambdaProxyClassKey& key, DumpTimeLambdaProxyClassInfo& info);
222
223 unsigned int hash() const {
224 return _key.hash();
225 }
226 RunTimeLambdaProxyClassKey key() const {
227 return _key;
228 }
229 #ifndef PRODUCT
230 void print_on(outputStream* st) const;
231 #endif
232 };
233
234 class DumpTimeLambdaProxyClassDictionary
235 : public ResourceHashtable<LambdaProxyClassKey,
236 DumpTimeLambdaProxyClassInfo,
237 137, // prime number
238 AnyObj::C_HEAP,
239 mtClassShared,
240 LambdaProxyClassKey::DUMPTIME_HASH,
241 LambdaProxyClassKey::DUMPTIME_EQUALS> {
242 public:
243 DumpTimeLambdaProxyClassDictionary() : _count(0) {}
244 int _count;
245 };
246
247 class LambdaProxyClassDictionary : public OffsetCompactHashtable<
248 RunTimeLambdaProxyClassKey*,
249 const RunTimeLambdaProxyClassInfo*,
250 RunTimeLambdaProxyClassInfo::EQUALS> {};
251
252 #endif // SHARE_CDS_LAMBDAPROXYCLASSINFO_HPP