Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 12572:388bb7650808
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 24 Oct 2013 16:21:25 +0200 |
parents | 359f7e70ae7f |
children | 606959535fd4 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP |
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP | |
27 | |
28 #include "classfile/systemDictionary.hpp" | |
29 #include "jvmtifiles/jvmti.h" | |
30 #include "oops/oop.hpp" | |
31 #include "runtime/os.hpp" | |
32 #include "utilities/utf8.hpp" | |
33 | |
0 | 34 // Interface for manipulating the basic Java classes. |
35 // | |
36 // All dependencies on layout of actual Java classes should be kept here. | |
37 // If the layout of any of the classes above changes the offsets must be adjusted. | |
38 // | |
39 // For most classes we hardwire the offsets for performance reasons. In certain | |
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
41 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
42 // | |
43 // Note that fields (static and non-static) are arranged with oops before non-oops | |
44 // on a per class basis. The offsets below have to reflect this ordering. | |
45 // | |
46 // When editing the layouts please update the check_offset verification code | |
47 // correspondingly. The names in the enums must be identical to the actual field | |
48 // names in order for the verification code to work. | |
49 | |
50 | |
51 // Interface to java.lang.String objects | |
52 | |
53 class java_lang_String : AllStatic { | |
54 private: | |
55 static int value_offset; | |
56 static int offset_offset; | |
57 static int count_offset; | |
58 static int hash_offset; | |
59 | |
6057 | 60 static bool initialized; |
61 | |
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62 static Handle basic_create(int length, TRAPS); |
0 | 63 |
6057 | 64 static void set_value( oop string, typeArrayOop buffer) { |
65 assert(initialized, "Must be initialized"); | |
66 string->obj_field_put(value_offset, (oop)buffer); | |
67 } | |
68 static void set_offset(oop string, int offset) { | |
69 assert(initialized, "Must be initialized"); | |
70 if (offset_offset > 0) { | |
71 string->int_field_put(offset_offset, offset); | |
72 } | |
73 } | |
74 static void set_count( oop string, int count) { | |
75 assert(initialized, "Must be initialized"); | |
76 if (count_offset > 0) { | |
77 string->int_field_put(count_offset, count); | |
78 } | |
79 } | |
0 | 80 |
81 public: | |
6057 | 82 static void compute_offsets(); |
83 | |
0 | 84 // Instance creation |
85 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
86 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
87 static Handle create_from_str(const char* utf8_str, TRAPS); | |
88 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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89 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
0 | 90 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
91 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
92 | |
6057 | 93 static bool has_offset_field() { |
94 assert(initialized, "Must be initialized"); | |
95 return (offset_offset > 0); | |
96 } | |
97 | |
98 static bool has_count_field() { | |
99 assert(initialized, "Must be initialized"); | |
100 return (count_offset > 0); | |
101 } | |
102 | |
103 static bool has_hash_field() { | |
104 assert(initialized, "Must be initialized"); | |
105 return (hash_offset > 0); | |
106 } | |
107 | |
108 static int value_offset_in_bytes() { | |
109 assert(initialized && (value_offset > 0), "Must be initialized"); | |
110 return value_offset; | |
111 } | |
112 static int count_offset_in_bytes() { | |
113 assert(initialized && (count_offset > 0), "Must be initialized"); | |
114 return count_offset; | |
115 } | |
116 static int offset_offset_in_bytes() { | |
117 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
118 return offset_offset; | |
119 } | |
120 static int hash_offset_in_bytes() { | |
121 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
122 return hash_offset; | |
123 } | |
0 | 124 |
125 // Accessors | |
126 static typeArrayOop value(oop java_string) { | |
6057 | 127 assert(initialized && (value_offset > 0), "Must be initialized"); |
0 | 128 assert(is_instance(java_string), "must be java_string"); |
129 return (typeArrayOop) java_string->obj_field(value_offset); | |
130 } | |
131 static int offset(oop java_string) { | |
6057 | 132 assert(initialized, "Must be initialized"); |
0 | 133 assert(is_instance(java_string), "must be java_string"); |
6057 | 134 if (offset_offset > 0) { |
135 return java_string->int_field(offset_offset); | |
136 } else { | |
137 return 0; | |
138 } | |
0 | 139 } |
140 static int length(oop java_string) { | |
6057 | 141 assert(initialized, "Must be initialized"); |
0 | 142 assert(is_instance(java_string), "must be java_string"); |
6057 | 143 if (count_offset > 0) { |
144 return java_string->int_field(count_offset); | |
145 } else { | |
146 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
147 } | |
0 | 148 } |
149 static int utf8_length(oop java_string); | |
150 | |
151 // String converters | |
152 static char* as_utf8_string(oop java_string); | |
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153 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
0 | 154 static char* as_utf8_string(oop java_string, int start, int len); |
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155 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
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156 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); |
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157 // produce an ascii string with all other values quoted using \u#### |
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158 static char* as_quoted_ascii(oop java_string); |
0 | 159 |
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160 // Compute the hash value for a java.lang.String object which would |
6162 | 161 // contain the characters passed in. |
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162 // |
6162 | 163 // As the hash value used by the String object itself, in |
164 // String.hashCode(). This value is normally calculated in Java code | |
165 // in the String.hashCode method(), but is precomputed for String | |
166 // objects in the shared archive file. | |
167 // hash P(31) from Kernighan & Ritchie | |
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168 // |
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169 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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170 template <typename T> static unsigned int hash_code(T* s, int len) { |
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171 unsigned int h = 0; |
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172 while (len-- > 0) { |
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173 h = 31*h + (unsigned int) *s; |
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174 s++; |
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175 } |
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176 return h; |
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177 } |
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178 static unsigned int hash_code(oop java_string); |
6162 | 179 |
180 // This is the string hash code used by the StringTable, which may be | |
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181 // the same as String.hashCode or an alternate hash code. |
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182 static unsigned int hash_string(oop java_string); |
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183 |
0 | 184 static bool equals(oop java_string, jchar* chars, int len); |
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185 static bool equals(oop str1, oop str2); |
0 | 186 |
187 // Conversion between '.' and '/' formats | |
188 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
189 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
190 | |
191 // Conversion | |
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192 static Symbol* as_symbol(Handle java_string, TRAPS); |
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193 static Symbol* as_symbol_or_null(oop java_string); |
0 | 194 |
195 // Testers | |
196 static bool is_instance(oop obj) { | |
1142 | 197 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 198 } |
199 | |
200 // Debugging | |
201 static void print(Handle java_string, outputStream* st); | |
202 friend class JavaClasses; | |
203 }; | |
204 | |
205 | |
206 // Interface to java.lang.Class objects | |
207 | |
3938 | 208 #define CLASS_INJECTED_FIELDS(macro) \ |
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209 macro(java_lang_Class, klass, intptr_signature, false) \ |
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210 GRAAL_ONLY(macro(java_lang_Class, graal_mirror, object_signature, false))\ |
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211 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 212 macro(java_lang_Class, oop_size, int_signature, false) \ |
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213 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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214 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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215 macro(java_lang_Class, init_lock, object_signature, false) \ |
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216 macro(java_lang_Class, signers, object_signature, false) |
3938 | 217 |
0 | 218 class java_lang_Class : AllStatic { |
3938 | 219 friend class VMStructs; |
220 | |
0 | 221 private: |
222 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
223 | |
3938 | 224 static int _klass_offset; |
225 static int _array_klass_offset; | |
0 | 226 |
3938 | 227 static int _oop_size_offset; |
228 static int _static_oop_field_count_offset; | |
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229 #ifdef GRAAL |
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230 static int _graal_mirror_offset; |
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231 #endif |
0 | 232 |
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233 static int _protection_domain_offset; |
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234 static int _init_lock_offset; |
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235 static int _signers_offset; |
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236 |
0 | 237 static bool offsets_computed; |
238 static int classRedefinedCount_offset; | |
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239 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 240 |
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241 static void set_init_lock(oop java_class, oop init_lock); |
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242 static void set_protection_domain(oop java_class, oop protection_domain); |
0 | 243 public: |
3938 | 244 static void compute_offsets(); |
245 | |
0 | 246 // Instance creation |
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247 static oop create_mirror(KlassHandle k, Handle protection_domain, TRAPS); |
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248 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 249 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
250 // Conversion | |
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251 static Klass* as_Klass(oop java_class); |
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252 static void set_klass(oop java_class, Klass* klass); |
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253 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 254 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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255 Klass* refk_oop = NULL; |
710 | 256 BasicType result = as_BasicType(java_class, &refk_oop); |
257 (*reference_klass) = KlassHandle(refk_oop); | |
258 return result; | |
259 } | |
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260 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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261 static void print_signature(oop java_class, outputStream *st); |
0 | 262 // Testing |
132
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263 static bool is_instance(oop obj) { |
1142 | 264 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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265 } |
0 | 266 static bool is_primitive(oop java_class); |
267 static BasicType primitive_type(oop java_class); | |
268 static oop primitive_mirror(BasicType t); | |
269 // JVM_NewArray support | |
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270 static Klass* array_klass(oop java_class); |
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271 static void set_array_klass(oop java_class, Klass* klass); |
0 | 272 // compiler support for class operations |
3938 | 273 static int klass_offset_in_bytes() { return _klass_offset; } |
274 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 275 // Support for classRedefinedCount field |
276 static int classRedefinedCount(oop the_class_mirror); | |
277 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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278 |
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279 // Support for embedded per-class oops |
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280 static oop protection_domain(oop java_class); |
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281 static oop init_lock(oop java_class); |
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282 static objArrayOop signers(oop java_class); |
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283 static void set_signers(oop java_class, objArrayOop signers); |
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284 |
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285 static int oop_size(oop java_class); |
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286 static void set_oop_size(oop java_class, int size); |
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287 static int static_oop_field_count(oop java_class); |
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288 static void set_static_oop_field_count(oop java_class, int size); |
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289 |
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290 #ifdef GRAAL |
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291 static oop graal_mirror(oop java_class); |
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292 static int graal_mirror_offset_in_bytes() { return _graal_mirror_offset; } |
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293 #endif |
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294 |
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295 static GrowableArray<Klass*>* fixup_mirror_list() { |
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296 return _fixup_mirror_list; |
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297 } |
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298 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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299 _fixup_mirror_list = v; |
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300 } |
0 | 301 // Debugging |
302 friend class JavaClasses; | |
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303 friend class InstanceKlass; // verification code accesses offsets |
0 | 304 friend class ClassFileParser; // access to number_of_fake_fields |
305 }; | |
306 | |
307 // Interface to java.lang.Thread objects | |
308 | |
309 class java_lang_Thread : AllStatic { | |
310 private: | |
311 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
312 // so we compute the offsets at startup rather than hard-wiring them. | |
313 static int _name_offset; | |
314 static int _group_offset; | |
315 static int _contextClassLoader_offset; | |
316 static int _inheritedAccessControlContext_offset; | |
317 static int _priority_offset; | |
318 static int _eetop_offset; | |
319 static int _daemon_offset; | |
320 static int _stillborn_offset; | |
321 static int _stackSize_offset; | |
322 static int _tid_offset; | |
323 static int _thread_status_offset; | |
324 static int _park_blocker_offset; | |
325 static int _park_event_offset ; | |
326 | |
327 static void compute_offsets(); | |
328 | |
329 public: | |
330 // Instance creation | |
331 static oop create(); | |
332 // Returns the JavaThread associated with the thread obj | |
333 static JavaThread* thread(oop java_thread); | |
334 // Set JavaThread for instance | |
335 static void set_thread(oop java_thread, JavaThread* thread); | |
336 // Name | |
337 static typeArrayOop name(oop java_thread); | |
338 static void set_name(oop java_thread, typeArrayOop name); | |
339 // Priority | |
340 static ThreadPriority priority(oop java_thread); | |
341 static void set_priority(oop java_thread, ThreadPriority priority); | |
342 // Thread group | |
343 static oop threadGroup(oop java_thread); | |
344 // Stillborn | |
345 static bool is_stillborn(oop java_thread); | |
346 static void set_stillborn(oop java_thread); | |
347 // Alive (NOTE: this is not really a field, but provides the correct | |
348 // definition without doing a Java call) | |
349 static bool is_alive(oop java_thread); | |
350 // Daemon | |
351 static bool is_daemon(oop java_thread); | |
352 static void set_daemon(oop java_thread); | |
353 // Context ClassLoader | |
354 static oop context_class_loader(oop java_thread); | |
355 // Control context | |
356 static oop inherited_access_control_context(oop java_thread); | |
357 // Stack size hint | |
358 static jlong stackSize(oop java_thread); | |
359 // Thread ID | |
360 static jlong thread_id(oop java_thread); | |
361 | |
362 // Blocker object responsible for thread parking | |
363 static oop park_blocker(oop java_thread); | |
364 | |
365 // Pointer to type-stable park handler, encoded as jlong. | |
366 // Should be set when apparently null | |
367 // For details, see unsafe.cpp Unsafe_Unpark | |
368 static jlong park_event(oop java_thread); | |
369 static bool set_park_event(oop java_thread, jlong ptr); | |
370 | |
371 // Java Thread Status for JVMTI and M&M use. | |
372 // This thread status info is saved in threadStatus field of | |
373 // java.lang.Thread java class. | |
374 enum ThreadStatus { | |
375 NEW = 0, | |
376 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
377 JVMTI_THREAD_STATE_RUNNABLE, | |
378 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
379 JVMTI_THREAD_STATE_WAITING + | |
380 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
381 JVMTI_THREAD_STATE_SLEEPING, | |
382 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
383 JVMTI_THREAD_STATE_WAITING + | |
384 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
385 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
386 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
387 JVMTI_THREAD_STATE_WAITING + | |
388 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
389 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
390 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
391 JVMTI_THREAD_STATE_WAITING + | |
392 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
393 JVMTI_THREAD_STATE_PARKED, | |
394 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
395 JVMTI_THREAD_STATE_WAITING + | |
396 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
397 JVMTI_THREAD_STATE_PARKED, | |
398 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
399 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
400 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
401 }; | |
402 // Write thread status info to threadStatus field of java.lang.Thread. | |
403 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
404 // Read thread status info from threadStatus field of java.lang.Thread. | |
405 static ThreadStatus get_thread_status(oop java_thread_oop); | |
406 | |
407 static const char* thread_status_name(oop java_thread_oop); | |
408 | |
409 // Debugging | |
410 friend class JavaClasses; | |
411 }; | |
412 | |
413 // Interface to java.lang.ThreadGroup objects | |
414 | |
415 class java_lang_ThreadGroup : AllStatic { | |
416 private: | |
417 static int _parent_offset; | |
418 static int _name_offset; | |
419 static int _threads_offset; | |
420 static int _groups_offset; | |
421 static int _maxPriority_offset; | |
422 static int _destroyed_offset; | |
423 static int _daemon_offset; | |
424 static int _vmAllowSuspension_offset; | |
425 static int _nthreads_offset; | |
426 static int _ngroups_offset; | |
427 | |
428 static void compute_offsets(); | |
429 | |
430 public: | |
431 // parent ThreadGroup | |
432 static oop parent(oop java_thread_group); | |
433 // name | |
434 static typeArrayOop name(oop java_thread_group); | |
435 // ("name as oop" accessor is not necessary) | |
436 // Number of threads in group | |
437 static int nthreads(oop java_thread_group); | |
438 // threads | |
439 static objArrayOop threads(oop java_thread_group); | |
440 // Number of threads in group | |
441 static int ngroups(oop java_thread_group); | |
442 // groups | |
443 static objArrayOop groups(oop java_thread_group); | |
444 // maxPriority in group | |
445 static ThreadPriority maxPriority(oop java_thread_group); | |
446 // Destroyed | |
447 static bool is_destroyed(oop java_thread_group); | |
448 // Daemon | |
449 static bool is_daemon(oop java_thread_group); | |
450 // vmAllowSuspension | |
451 static bool is_vmAllowSuspension(oop java_thread_group); | |
452 // Debugging | |
453 friend class JavaClasses; | |
454 }; | |
455 | |
456 | |
457 | |
458 // Interface to java.lang.Throwable objects | |
459 | |
460 class java_lang_Throwable: AllStatic { | |
461 friend class BacktraceBuilder; | |
462 | |
463 private: | |
464 // Offsets | |
465 enum { | |
466 hc_backtrace_offset = 0, | |
467 hc_detailMessage_offset = 1, | |
468 hc_cause_offset = 2, // New since 1.4 | |
469 hc_stackTrace_offset = 3 // New since 1.4 | |
470 }; | |
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471 enum { |
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472 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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473 }; |
0 | 474 // Trace constants |
475 enum { | |
476 trace_methods_offset = 0, | |
477 trace_bcis_offset = 1, | |
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478 trace_mirrors_offset = 2, |
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479 trace_next_offset = 3, |
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480 trace_size = 4, |
0 | 481 trace_chunk_size = 32 |
482 }; | |
483 | |
484 static int backtrace_offset; | |
485 static int detailMessage_offset; | |
486 static int cause_offset; | |
487 static int stackTrace_offset; | |
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488 static int static_unassigned_stacktrace_offset; |
0 | 489 |
490 // Printing | |
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491 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); |
0 | 492 // StackTrace (programmatic access, new since 1.4) |
493 static void clear_stacktrace(oop throwable); | |
494 // No stack trace available | |
495 static const char* no_stack_trace_message(); | |
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496 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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497 static void set_stacktrace(oop throwable, oop st_element_array); |
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498 static oop unassigned_stacktrace(); |
0 | 499 |
500 public: | |
501 // Backtrace | |
502 static oop backtrace(oop throwable); | |
503 static void set_backtrace(oop throwable, oop value); | |
504 // Needed by JVMTI to filter out this internal field. | |
505 static int get_backtrace_offset() { return backtrace_offset;} | |
506 static int get_detailMessage_offset() { return detailMessage_offset;} | |
507 // Message | |
508 static oop message(oop throwable); | |
509 static oop message(Handle throwable); | |
510 static void set_message(oop throwable, oop value); | |
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511 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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512 int version, int bci); |
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513 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
0 | 514 static void print_stack_usage(Handle stream); |
515 | |
516 // Allocate space for backtrace (created but stack trace not filled in) | |
517 static void allocate_backtrace(Handle throwable, TRAPS); | |
518 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
519 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
520 // Fill in current stack trace, can cause GC | |
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521 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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522 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 523 // Programmatic access to stack trace |
524 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
525 static int get_stack_trace_depth(oop throwable, TRAPS); | |
526 // Printing | |
527 static void print(oop throwable, outputStream* st); | |
528 static void print(Handle throwable, outputStream* st); | |
529 static void print_stack_trace(oop throwable, outputStream* st); | |
530 // Debugging | |
531 friend class JavaClasses; | |
532 }; | |
533 | |
534 | |
535 // Interface to java.lang.reflect.AccessibleObject objects | |
536 | |
537 class java_lang_reflect_AccessibleObject: AllStatic { | |
538 private: | |
539 // Note that to reduce dependencies on the JDK we compute these | |
540 // offsets at run-time. | |
541 static int override_offset; | |
542 | |
543 static void compute_offsets(); | |
544 | |
545 public: | |
546 // Accessors | |
547 static jboolean override(oop reflect); | |
548 static void set_override(oop reflect, jboolean value); | |
549 | |
550 // Debugging | |
551 friend class JavaClasses; | |
552 }; | |
553 | |
554 | |
555 // Interface to java.lang.reflect.Method objects | |
556 | |
557 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
558 private: | |
559 // Note that to reduce dependencies on the JDK we compute these | |
560 // offsets at run-time. | |
561 static int clazz_offset; | |
562 static int name_offset; | |
563 static int returnType_offset; | |
564 static int parameterTypes_offset; | |
565 static int exceptionTypes_offset; | |
566 static int slot_offset; | |
567 static int modifiers_offset; | |
568 static int signature_offset; | |
569 static int annotations_offset; | |
570 static int parameter_annotations_offset; | |
571 static int annotation_default_offset; | |
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572 static int type_annotations_offset; |
0 | 573 |
574 static void compute_offsets(); | |
575 | |
576 public: | |
577 // Allocation | |
578 static Handle create(TRAPS); | |
579 | |
580 // Accessors | |
581 static oop clazz(oop reflect); | |
582 static void set_clazz(oop reflect, oop value); | |
583 | |
584 static oop name(oop method); | |
585 static void set_name(oop method, oop value); | |
586 | |
587 static oop return_type(oop method); | |
588 static void set_return_type(oop method, oop value); | |
589 | |
590 static oop parameter_types(oop method); | |
591 static void set_parameter_types(oop method, oop value); | |
592 | |
593 static oop exception_types(oop method); | |
594 static void set_exception_types(oop method, oop value); | |
595 | |
596 static int slot(oop reflect); | |
597 static void set_slot(oop reflect, int value); | |
598 | |
599 static int modifiers(oop method); | |
600 static void set_modifiers(oop method, int value); | |
601 | |
602 static bool has_signature_field(); | |
603 static oop signature(oop method); | |
604 static void set_signature(oop method, oop value); | |
605 | |
606 static bool has_annotations_field(); | |
607 static oop annotations(oop method); | |
608 static void set_annotations(oop method, oop value); | |
609 | |
610 static bool has_parameter_annotations_field(); | |
611 static oop parameter_annotations(oop method); | |
612 static void set_parameter_annotations(oop method, oop value); | |
613 | |
614 static bool has_annotation_default_field(); | |
615 static oop annotation_default(oop method); | |
616 static void set_annotation_default(oop method, oop value); | |
617 | |
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618 static bool has_type_annotations_field(); |
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619 static oop type_annotations(oop method); |
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620 static void set_type_annotations(oop method, oop value); |
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621 |
0 | 622 // Debugging |
623 friend class JavaClasses; | |
624 }; | |
625 | |
626 | |
627 // Interface to java.lang.reflect.Constructor objects | |
628 | |
629 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
630 private: | |
631 // Note that to reduce dependencies on the JDK we compute these | |
632 // offsets at run-time. | |
633 static int clazz_offset; | |
634 static int parameterTypes_offset; | |
635 static int exceptionTypes_offset; | |
636 static int slot_offset; | |
637 static int modifiers_offset; | |
638 static int signature_offset; | |
639 static int annotations_offset; | |
640 static int parameter_annotations_offset; | |
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641 static int type_annotations_offset; |
0 | 642 |
643 static void compute_offsets(); | |
644 | |
645 public: | |
646 // Allocation | |
647 static Handle create(TRAPS); | |
648 | |
649 // Accessors | |
650 static oop clazz(oop reflect); | |
651 static void set_clazz(oop reflect, oop value); | |
652 | |
653 static oop parameter_types(oop constructor); | |
654 static void set_parameter_types(oop constructor, oop value); | |
655 | |
656 static oop exception_types(oop constructor); | |
657 static void set_exception_types(oop constructor, oop value); | |
658 | |
659 static int slot(oop reflect); | |
660 static void set_slot(oop reflect, int value); | |
661 | |
662 static int modifiers(oop constructor); | |
663 static void set_modifiers(oop constructor, int value); | |
664 | |
665 static bool has_signature_field(); | |
666 static oop signature(oop constructor); | |
667 static void set_signature(oop constructor, oop value); | |
668 | |
669 static bool has_annotations_field(); | |
670 static oop annotations(oop constructor); | |
671 static void set_annotations(oop constructor, oop value); | |
672 | |
673 static bool has_parameter_annotations_field(); | |
674 static oop parameter_annotations(oop method); | |
675 static void set_parameter_annotations(oop method, oop value); | |
676 | |
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677 static bool has_type_annotations_field(); |
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678 static oop type_annotations(oop constructor); |
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679 static void set_type_annotations(oop constructor, oop value); |
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680 |
0 | 681 // Debugging |
682 friend class JavaClasses; | |
683 }; | |
684 | |
685 | |
686 // Interface to java.lang.reflect.Field objects | |
687 | |
688 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
689 private: | |
690 // Note that to reduce dependencies on the JDK we compute these | |
691 // offsets at run-time. | |
692 static int clazz_offset; | |
693 static int name_offset; | |
694 static int type_offset; | |
695 static int slot_offset; | |
696 static int modifiers_offset; | |
697 static int signature_offset; | |
698 static int annotations_offset; | |
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699 static int type_annotations_offset; |
0 | 700 |
701 static void compute_offsets(); | |
702 | |
703 public: | |
704 // Allocation | |
705 static Handle create(TRAPS); | |
706 | |
707 // Accessors | |
708 static oop clazz(oop reflect); | |
709 static void set_clazz(oop reflect, oop value); | |
710 | |
711 static oop name(oop field); | |
712 static void set_name(oop field, oop value); | |
713 | |
714 static oop type(oop field); | |
715 static void set_type(oop field, oop value); | |
716 | |
717 static int slot(oop reflect); | |
718 static void set_slot(oop reflect, int value); | |
719 | |
720 static int modifiers(oop field); | |
721 static void set_modifiers(oop field, int value); | |
722 | |
723 static bool has_signature_field(); | |
724 static oop signature(oop constructor); | |
725 static void set_signature(oop constructor, oop value); | |
726 | |
727 static bool has_annotations_field(); | |
728 static oop annotations(oop constructor); | |
729 static void set_annotations(oop constructor, oop value); | |
730 | |
731 static bool has_parameter_annotations_field(); | |
732 static oop parameter_annotations(oop method); | |
733 static void set_parameter_annotations(oop method, oop value); | |
734 | |
735 static bool has_annotation_default_field(); | |
736 static oop annotation_default(oop method); | |
737 static void set_annotation_default(oop method, oop value); | |
738 | |
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739 static bool has_type_annotations_field(); |
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740 static oop type_annotations(oop field); |
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741 static void set_type_annotations(oop field, oop value); |
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742 |
0 | 743 // Debugging |
744 friend class JavaClasses; | |
745 }; | |
746 | |
7462
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747 class java_lang_reflect_Parameter { |
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748 private: |
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749 // Note that to reduce dependencies on the JDK we compute these |
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750 // offsets at run-time. |
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751 static int name_offset; |
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752 static int modifiers_offset; |
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753 static int index_offset; |
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754 static int executable_offset; |
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755 |
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756 static void compute_offsets(); |
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757 |
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758 public: |
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759 // Allocation |
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760 static Handle create(TRAPS); |
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761 |
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762 // Accessors |
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763 static oop name(oop field); |
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764 static void set_name(oop field, oop value); |
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765 |
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766 static int index(oop reflect); |
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767 static void set_index(oop reflect, int value); |
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768 |
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769 static int modifiers(oop reflect); |
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770 static void set_modifiers(oop reflect, int value); |
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771 |
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772 static oop executable(oop constructor); |
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773 static void set_executable(oop constructor, oop value); |
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774 |
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775 friend class JavaClasses; |
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776 }; |
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777 |
0 | 778 // Interface to sun.reflect.ConstantPool objects |
779 class sun_reflect_ConstantPool { | |
780 private: | |
781 // Note that to reduce dependencies on the JDK we compute these | |
782 // offsets at run-time. | |
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783 static int _oop_offset; |
0 | 784 |
785 static void compute_offsets(); | |
786 | |
787 public: | |
788 // Allocation | |
789 static Handle create(TRAPS); | |
790 | |
791 // Accessors | |
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792 static void set_cp(oop reflect, ConstantPool* value); |
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793 static int oop_offset() { |
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794 return _oop_offset; |
0 | 795 } |
796 | |
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797 static ConstantPool* get_cp(oop reflect); |
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798 |
0 | 799 // Debugging |
800 friend class JavaClasses; | |
801 }; | |
802 | |
803 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
804 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
805 private: | |
806 static int _base_offset; | |
807 static void compute_offsets(); | |
808 | |
809 public: | |
810 static int base_offset() { | |
811 return _base_offset; | |
812 } | |
813 | |
814 // Debugging | |
815 friend class JavaClasses; | |
816 }; | |
817 | |
818 // Interface to java.lang primitive type boxing objects: | |
819 // - java.lang.Boolean | |
820 // - java.lang.Character | |
821 // - java.lang.Float | |
822 // - java.lang.Double | |
823 // - java.lang.Byte | |
824 // - java.lang.Short | |
825 // - java.lang.Integer | |
826 // - java.lang.Long | |
827 | |
828 // This could be separated out into 8 individual classes. | |
829 | |
830 class java_lang_boxing_object: AllStatic { | |
831 private: | |
832 enum { | |
833 hc_value_offset = 0 | |
834 }; | |
835 static int value_offset; | |
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836 static int long_value_offset; |
0 | 837 |
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838 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 839 public: |
840 // Allocation. Returns a boxed value, or NULL for invalid type. | |
841 static oop create(BasicType type, jvalue* value, TRAPS); | |
842 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
843 static BasicType get_value(oop box, jvalue* value); | |
844 static BasicType set_value(oop box, jvalue* value); | |
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845 static BasicType basic_type(oop box); |
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846 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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847 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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848 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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849 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 850 |
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851 static int value_offset_in_bytes(BasicType type) { |
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852 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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853 value_offset; |
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854 } |
0 | 855 |
856 // Debugging | |
857 friend class JavaClasses; | |
858 }; | |
859 | |
860 | |
861 | |
862 // Interface to java.lang.ref.Reference objects | |
863 | |
864 class java_lang_ref_Reference: AllStatic { | |
865 public: | |
866 enum { | |
867 hc_referent_offset = 0, | |
868 hc_queue_offset = 1, | |
869 hc_next_offset = 2, | |
870 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
871 }; | |
872 enum { | |
873 hc_static_lock_offset = 0, | |
874 hc_static_pending_offset = 1 | |
875 }; | |
876 | |
877 static int referent_offset; | |
878 static int queue_offset; | |
879 static int next_offset; | |
880 static int discovered_offset; | |
881 static int static_lock_offset; | |
882 static int static_pending_offset; | |
883 static int number_of_fake_oop_fields; | |
884 | |
885 // Accessors | |
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886 static oop referent(oop ref) { |
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887 return ref->obj_field(referent_offset); |
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888 } |
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889 static void set_referent(oop ref, oop value) { |
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890 ref->obj_field_put(referent_offset, value); |
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891 } |
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892 static void set_referent_raw(oop ref, oop value) { |
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893 ref->obj_field_put_raw(referent_offset, value); |
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894 } |
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895 static HeapWord* referent_addr(oop ref) { |
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896 return ref->obj_field_addr<HeapWord>(referent_offset); |
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897 } |
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898 static oop next(oop ref) { |
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899 return ref->obj_field(next_offset); |
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900 } |
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901 static void set_next(oop ref, oop value) { |
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902 ref->obj_field_put(next_offset, value); |
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903 } |
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904 static void set_next_raw(oop ref, oop value) { |
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905 ref->obj_field_put_raw(next_offset, value); |
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906 } |
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907 static HeapWord* next_addr(oop ref) { |
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908 return ref->obj_field_addr<HeapWord>(next_offset); |
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909 } |
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910 static oop discovered(oop ref) { |
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911 return ref->obj_field(discovered_offset); |
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912 } |
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913 static void set_discovered(oop ref, oop value) { |
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914 ref->obj_field_put(discovered_offset, value); |
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915 } |
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916 static void set_discovered_raw(oop ref, oop value) { |
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917 ref->obj_field_put_raw(discovered_offset, value); |
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918 } |
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919 static HeapWord* discovered_addr(oop ref) { |
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920 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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921 } |
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922 // Accessors for statics |
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923 static oop pending_list_lock(); |
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924 static oop pending_list(); |
0 | 925 |
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926 static HeapWord* pending_list_lock_addr(); |
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927 static HeapWord* pending_list_addr(); |
0 | 928 }; |
929 | |
930 | |
931 // Interface to java.lang.ref.SoftReference objects | |
932 | |
933 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
934 public: | |
935 enum { | |
936 // The timestamp is a long field and may need to be adjusted for alignment. | |
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937 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 938 }; |
939 enum { | |
940 hc_static_clock_offset = 0 | |
941 }; | |
942 | |
943 static int timestamp_offset; | |
944 static int static_clock_offset; | |
945 | |
946 // Accessors | |
947 static jlong timestamp(oop ref); | |
948 | |
949 // Accessors for statics | |
950 static jlong clock(); | |
951 static void set_clock(jlong value); | |
952 }; | |
953 | |
954 | |
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955 // Interface to java.lang.invoke.MethodHandle objects |
710 | 956 |
957 class MethodHandleEntry; | |
958 | |
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959 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 960 friend class JavaClasses; |
961 | |
962 private: | |
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963 static int _type_offset; // the MethodType of this MH |
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964 static int _form_offset; // the LambdaForm of this MH |
710 | 965 |
966 static void compute_offsets(); | |
967 | |
968 public: | |
969 // Accessors | |
970 static oop type(oop mh); | |
971 static void set_type(oop mh, oop mtype); | |
972 | |
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973 static oop form(oop mh); |
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974 static void set_form(oop mh, oop lform); |
710 | 975 |
976 // Testers | |
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977 static bool is_subclass(Klass* klass) { |
6983 | 978 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 979 } |
980 static bool is_instance(oop obj) { | |
981 return obj != NULL && is_subclass(obj->klass()); | |
982 } | |
983 | |
984 // Accessors for code generation: | |
985 static int type_offset_in_bytes() { return _type_offset; } | |
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986 static int form_offset_in_bytes() { return _form_offset; } |
710 | 987 }; |
988 | |
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989 // Interface to java.lang.invoke.DirectMethodHandle objects |
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990 |
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991 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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992 friend class JavaClasses; |
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993 |
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994 private: |
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995 static int _member_offset; // the MemberName of this DMH |
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996 |
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997 static void compute_offsets(); |
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998 |
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999 public: |
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1000 // Accessors |
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1001 static oop member(oop mh); |
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1002 |
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1003 // Testers |
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1004 static bool is_subclass(Klass* klass) { |
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1005 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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1006 } |
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1007 static bool is_instance(oop obj) { |
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1008 return obj != NULL && is_subclass(obj->klass()); |
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1009 } |
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1010 |
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1011 // Accessors for code generation: |
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1012 static int member_offset_in_bytes() { return _member_offset; } |
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1013 }; |
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1014 |
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1015 // Interface to java.lang.invoke.LambdaForm objects |
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1016 // (These are a private interface for managing adapter code generation.) |
3938 | 1017 |
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1018 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 1019 friend class JavaClasses; |
1020 | |
1021 private: | |
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1022 static int _vmentry_offset; // type is MemberName |
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1023 |
710 | 1024 static void compute_offsets(); |
1025 | |
1026 public: | |
1027 // Accessors | |
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1028 static oop vmentry(oop lform); |
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1029 static void set_vmentry(oop lform, oop invoker); |
710 | 1030 |
1031 // Testers | |
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1032 static bool is_subclass(Klass* klass) { |
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1033 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 1034 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 1035 } |
1036 static bool is_instance(oop obj) { | |
1037 return obj != NULL && is_subclass(obj->klass()); | |
1038 } | |
1039 | |
1040 // Accessors for code generation: | |
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1041 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 1042 }; |
1043 | |
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1044 |
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1045 // Interface to java.lang.invoke.MemberName objects |
710 | 1046 // (These are a private interface for Java code to query the class hierarchy.) |
1047 | |
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1048 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1049 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1050 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1051 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 1052 |
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1053 class java_lang_invoke_MemberName: AllStatic { |
710 | 1054 friend class JavaClasses; |
1055 | |
1056 private: | |
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1057 // From java.lang.invoke.MemberName: |
710 | 1058 // private Class<?> clazz; // class in which the method is defined |
1059 // private String name; // may be null if not yet materialized | |
1060 // private Object type; // may be null if not yet materialized | |
1061 // private int flags; // modifier bits; see reflect.Modifier | |
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1062 // private intptr vmtarget; // VM-specific target value |
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1063 // private intptr_t vmindex; // member index within class or interface |
710 | 1064 static int _clazz_offset; |
1065 static int _name_offset; | |
1066 static int _type_offset; | |
1067 static int _flags_offset; | |
1068 static int _vmtarget_offset; | |
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1069 static int _vmloader_offset; |
710 | 1070 static int _vmindex_offset; |
1071 | |
1072 static void compute_offsets(); | |
1073 | |
1074 public: | |
1075 // Accessors | |
1076 static oop clazz(oop mname); | |
1077 static void set_clazz(oop mname, oop clazz); | |
1078 | |
1079 static oop type(oop mname); | |
1080 static void set_type(oop mname, oop type); | |
1081 | |
1082 static oop name(oop mname); | |
1083 static void set_name(oop mname, oop name); | |
1084 | |
1085 static int flags(oop mname); | |
1086 static void set_flags(oop mname, int flags); | |
1087 | |
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1088 static Metadata* vmtarget(oop mname); |
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1089 static void set_vmtarget(oop mname, Metadata* target); |
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1090 #if INCLUDE_JVMTI |
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1091 static void adjust_vmtarget(oop mname, Metadata* target); |
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1092 #endif // INCLUDE_JVMTI |
710 | 1093 |
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1094 static intptr_t vmindex(oop mname); |
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1095 static void set_vmindex(oop mname, intptr_t index); |
710 | 1096 |
1097 // Testers | |
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1098 static bool is_subclass(Klass* klass) { |
6983 | 1099 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1100 } |
1101 static bool is_instance(oop obj) { | |
1102 return obj != NULL && is_subclass(obj->klass()); | |
1103 } | |
1104 | |
1105 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1106 enum { | |
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1107 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1108 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1109 MN_IS_FIELD = 0x00040000, // field |
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1110 MN_IS_TYPE = 0x00080000, // nested type |
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1111 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1112 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1113 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1114 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1115 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1116 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1117 }; |
1118 | |
1119 // Accessors for code generation: | |
1120 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1121 static int type_offset_in_bytes() { return _type_offset; } | |
1122 static int name_offset_in_bytes() { return _name_offset; } | |
1123 static int flags_offset_in_bytes() { return _flags_offset; } | |
1124 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1125 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1126 }; | |
1127 | |
1128 | |
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1129 // Interface to java.lang.invoke.MethodType objects |
710 | 1130 |
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1131 class java_lang_invoke_MethodType: AllStatic { |
710 | 1132 friend class JavaClasses; |
1133 | |
1134 private: | |
1135 static int _rtype_offset; | |
1136 static int _ptypes_offset; | |
1137 | |
1138 static void compute_offsets(); | |
1139 | |
1140 public: | |
1141 // Accessors | |
1142 static oop rtype(oop mt); | |
1143 static objArrayOop ptypes(oop mt); | |
1144 | |
1145 static oop ptype(oop mt, int index); | |
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1146 static int ptype_count(oop mt); |
710 | 1147 |
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1148 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1149 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1150 |
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1151 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1152 static void print_signature(oop mt, outputStream* st); |
1153 | |
1154 static bool is_instance(oop obj) { | |
1155 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1156 } | |
1157 | |
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1158 static bool equals(oop mt1, oop mt2); |
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1159 |
710 | 1160 // Accessors for code generation: |
1161 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1162 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1163 }; | |
1164 | |
1165 | |
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1166 // Interface to java.lang.invoke.CallSite objects |
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1167 |
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1168 class java_lang_invoke_CallSite: AllStatic { |
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1169 friend class JavaClasses; |
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1170 |
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1171 private: |
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1172 static int _target_offset; |
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1173 |
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1174 static void compute_offsets(); |
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1175 |
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1176 public: |
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1177 // Accessors |
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1178 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1179 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1180 |
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1181 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1182 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1183 |
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1184 // Testers |
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1185 static bool is_subclass(Klass* klass) { |
6983 | 1186 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
1135
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1187 } |
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1188 static bool is_instance(oop obj) { |
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1189 return obj != NULL && is_subclass(obj->klass()); |
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1190 } |
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1191 |
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1192 // Accessors for code generation: |
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1193 static int target_offset_in_bytes() { return _target_offset; } |
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1194 }; |
710 | 1195 |
1196 | |
0 | 1197 // Interface to java.security.AccessControlContext objects |
1198 | |
1199 class java_security_AccessControlContext: AllStatic { | |
1200 private: | |
1201 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1202 // so we compute the offsets at startup rather than hard-wiring them. | |
1203 static int _context_offset; | |
1204 static int _privilegedContext_offset; | |
1205 static int _isPrivileged_offset; | |
11010 | 1206 static int _isAuthorized_offset; |
0 | 1207 |
1208 static void compute_offsets(); | |
1209 public: | |
1210 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1211 | |
11010 | 1212 static bool is_authorized(Handle context); |
1213 | |
0 | 1214 // Debugging/initialization |
1215 friend class JavaClasses; | |
1216 }; | |
1217 | |
1218 | |
1219 // Interface to java.lang.ClassLoader objects | |
1220 | |
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1221 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1222 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1223 |
0 | 1224 class java_lang_ClassLoader : AllStatic { |
1225 private: | |
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1226 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1227 enum { |
1228 hc_parent_offset = 0 | |
1229 }; | |
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1230 static int _loader_data_offset; |
3938 | 1231 static bool offsets_computed; |
0 | 1232 static int parent_offset; |
3938 | 1233 static int parallelCapable_offset; |
1234 | |
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1235 public: |
3938 | 1236 static void compute_offsets(); |
0 | 1237 |
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1238 static ClassLoaderData** loader_data_addr(oop loader); |
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1239 static ClassLoaderData* loader_data(oop loader); |
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1240 |
0 | 1241 static oop parent(oop loader); |
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1242 static bool isAncestor(oop loader, oop cl); |
0 | 1243 |
3938 | 1244 // Support for parallelCapable field |
1245 static bool parallelCapable(oop the_class_mirror); | |
1246 | |
0 | 1247 static bool is_trusted_loader(oop loader); |
1248 | |
1249 // Fix for 4474172 | |
1250 static oop non_reflection_class_loader(oop loader); | |
1251 | |
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1252 // Testers |
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1253 static bool is_subclass(Klass* klass) { |
6983 | 1254 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1255 } |
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1256 static bool is_instance(oop obj) { |
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1257 return obj != NULL && is_subclass(obj->klass()); |
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1258 } |
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1259 |
0 | 1260 // Debugging |
1261 friend class JavaClasses; | |
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1262 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1263 }; |
1264 | |
1265 | |
1266 // Interface to java.lang.System objects | |
1267 | |
1268 class java_lang_System : AllStatic { | |
1269 private: | |
1270 enum { | |
1271 hc_static_in_offset = 0, | |
1272 hc_static_out_offset = 1, | |
11010 | 1273 hc_static_err_offset = 2, |
1274 hc_static_security_offset = 3 | |
0 | 1275 }; |
1276 | |
1277 static int static_in_offset; | |
1278 static int static_out_offset; | |
1279 static int static_err_offset; | |
11010 | 1280 static int static_security_offset; |
0 | 1281 |
1282 public: | |
1283 static int in_offset_in_bytes(); | |
1284 static int out_offset_in_bytes(); | |
1285 static int err_offset_in_bytes(); | |
1286 | |
11010 | 1287 static bool has_security_manager(); |
1288 | |
0 | 1289 // Debugging |
1290 friend class JavaClasses; | |
1291 }; | |
1292 | |
1293 | |
1294 // Interface to java.lang.StackTraceElement objects | |
1295 | |
1296 class java_lang_StackTraceElement: AllStatic { | |
1297 private: | |
1298 enum { | |
1299 hc_declaringClass_offset = 0, | |
1300 hc_methodName_offset = 1, | |
1301 hc_fileName_offset = 2, | |
1302 hc_lineNumber_offset = 3 | |
1303 }; | |
1304 | |
1305 static int declaringClass_offset; | |
1306 static int methodName_offset; | |
1307 static int fileName_offset; | |
1308 static int lineNumber_offset; | |
1309 | |
1310 public: | |
1311 // Setters | |
1312 static void set_declaringClass(oop element, oop value); | |
1313 static void set_methodName(oop element, oop value); | |
1314 static void set_fileName(oop element, oop value); | |
1315 static void set_lineNumber(oop element, int value); | |
1316 | |
1317 // Create an instance of StackTraceElement | |
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1318 static oop create(Handle mirror, int method, int version, int bci, TRAPS); |
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1319 static oop create(methodHandle method, int bci, TRAPS); |
0 | 1320 |
1321 // Debugging | |
1322 friend class JavaClasses; | |
1323 }; | |
1324 | |
1325 | |
1326 // Interface to java.lang.AssertionStatusDirectives objects | |
1327 | |
1328 class java_lang_AssertionStatusDirectives: AllStatic { | |
1329 private: | |
1330 enum { | |
1331 hc_classes_offset, | |
1332 hc_classEnabled_offset, | |
1333 hc_packages_offset, | |
1334 hc_packageEnabled_offset, | |
1335 hc_deflt_offset | |
1336 }; | |
1337 | |
1338 static int classes_offset; | |
1339 static int classEnabled_offset; | |
1340 static int packages_offset; | |
1341 static int packageEnabled_offset; | |
1342 static int deflt_offset; | |
1343 | |
1344 public: | |
1345 // Setters | |
1346 static void set_classes(oop obj, oop val); | |
1347 static void set_classEnabled(oop obj, oop val); | |
1348 static void set_packages(oop obj, oop val); | |
1349 static void set_packageEnabled(oop obj, oop val); | |
1350 static void set_deflt(oop obj, bool val); | |
1351 // Debugging | |
1352 friend class JavaClasses; | |
1353 }; | |
1354 | |
1355 | |
1356 class java_nio_Buffer: AllStatic { | |
1357 private: | |
1358 static int _limit_offset; | |
1359 | |
1360 public: | |
1361 static int limit_offset(); | |
1362 static void compute_offsets(); | |
1363 }; | |
1364 | |
1365 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1366 private: | |
1367 static int _owner_offset; | |
1368 public: | |
1369 static void initialize(TRAPS); | |
1370 static oop get_owner_threadObj(oop obj); | |
1371 }; | |
1372 | |
3938 | 1373 // Use to declare fields that need to be injected into Java classes |
1374 // for the JVM to use. The name_index and signature_index are | |
1375 // declared in vmSymbols. The may_be_java flag is used to declare | |
1376 // fields that might already exist in Java but should be injected if | |
1377 // they don't. Otherwise the field is unconditionally injected and | |
1378 // the JVM uses the injected one. This is to ensure that name | |
1379 // collisions don't occur. In general may_be_java should be false | |
1380 // unless there's a good reason. | |
1381 | |
1382 class InjectedField { | |
1383 public: | |
1384 const SystemDictionary::WKID klass_id; | |
1385 const vmSymbols::SID name_index; | |
1386 const vmSymbols::SID signature_index; | |
1387 const bool may_be_java; | |
1388 | |
1389 | |
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1390 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1391 Symbol* name() const { return lookup_symbol(name_index); } |
1392 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1393 | |
1394 int compute_offset(); | |
1395 | |
1396 // Find the Symbol for this index | |
1397 static Symbol* lookup_symbol(int symbol_index) { | |
1398 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1399 } | |
1400 }; | |
1401 | |
1402 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1403 klass##_##name##_enum, | |
1404 | |
1405 #define ALL_INJECTED_FIELDS(macro) \ | |
1406 CLASS_INJECTED_FIELDS(macro) \ | |
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1407 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1408 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1409 |
0 | 1410 // Interface to hard-coded offset checking |
1411 | |
1412 class JavaClasses : AllStatic { | |
1413 private: | |
3938 | 1414 |
1415 static InjectedField _injected_fields[]; | |
1416 | |
0 | 1417 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1418 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
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1419 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1420 |
0 | 1421 public: |
3938 | 1422 enum InjectedFieldID { |
1423 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1424 MAX_enum | |
1425 }; | |
1426 | |
1427 static int compute_injected_offset(InjectedFieldID id); | |
1428 | |
0 | 1429 static void compute_hard_coded_offsets(); |
1430 static void compute_offsets(); | |
1431 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1432 |
1433 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1434 }; |
1972 | 1435 |
3938 | 1436 #undef DECLARE_INJECTED_FIELD_ENUM |
1437 | |
1972 | 1438 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |