Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/javaClasses.hpp @ 17839:5cf196cc5405
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Reviewed-by: coleenp, dsamersoff
Contributed-by: masato.yoshida@oracle.com
author | dbuck |
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date | Sat, 05 Apr 2014 23:38:24 -0700 |
parents | 595c0f60d50d |
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0 | 1 /* |
17764 | 2 * Copyright (c) 1997, 2014, 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_offset(oop string, int offset) { |
65 assert(initialized, "Must be initialized"); | |
66 if (offset_offset > 0) { | |
67 string->int_field_put(offset_offset, offset); | |
68 } | |
69 } | |
70 static void set_count( oop string, int count) { | |
71 assert(initialized, "Must be initialized"); | |
72 if (count_offset > 0) { | |
73 string->int_field_put(count_offset, count); | |
74 } | |
75 } | |
0 | 76 |
77 public: | |
6057 | 78 static void compute_offsets(); |
79 | |
0 | 80 // Instance creation |
81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
83 static Handle create_from_str(const char* utf8_str, TRAPS); | |
84 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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85 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
0 | 86 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
88 | |
6057 | 89 static bool has_offset_field() { |
90 assert(initialized, "Must be initialized"); | |
91 return (offset_offset > 0); | |
92 } | |
93 | |
94 static bool has_count_field() { | |
95 assert(initialized, "Must be initialized"); | |
96 return (count_offset > 0); | |
97 } | |
98 | |
99 static bool has_hash_field() { | |
100 assert(initialized, "Must be initialized"); | |
101 return (hash_offset > 0); | |
102 } | |
103 | |
104 static int value_offset_in_bytes() { | |
105 assert(initialized && (value_offset > 0), "Must be initialized"); | |
106 return value_offset; | |
107 } | |
108 static int count_offset_in_bytes() { | |
109 assert(initialized && (count_offset > 0), "Must be initialized"); | |
110 return count_offset; | |
111 } | |
112 static int offset_offset_in_bytes() { | |
113 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
114 return offset_offset; | |
115 } | |
116 static int hash_offset_in_bytes() { | |
117 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
118 return hash_offset; | |
119 } | |
0 | 120 |
17764 | 121 static void set_value(oop string, typeArrayOop buffer) { |
122 assert(initialized && (value_offset > 0), "Must be initialized"); | |
123 string->obj_field_put(value_offset, (oop)buffer); | |
124 } | |
125 static void set_hash(oop string, unsigned int hash) { | |
126 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
127 string->int_field_put(hash_offset, hash); | |
128 } | |
129 | |
0 | 130 // Accessors |
131 static typeArrayOop value(oop java_string) { | |
6057 | 132 assert(initialized && (value_offset > 0), "Must be initialized"); |
0 | 133 assert(is_instance(java_string), "must be java_string"); |
134 return (typeArrayOop) java_string->obj_field(value_offset); | |
135 } | |
17764 | 136 static unsigned int hash(oop java_string) { |
137 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
138 assert(is_instance(java_string), "must be java_string"); | |
139 return java_string->int_field(hash_offset); | |
140 } | |
0 | 141 static int offset(oop java_string) { |
6057 | 142 assert(initialized, "Must be initialized"); |
0 | 143 assert(is_instance(java_string), "must be java_string"); |
6057 | 144 if (offset_offset > 0) { |
145 return java_string->int_field(offset_offset); | |
146 } else { | |
147 return 0; | |
148 } | |
0 | 149 } |
150 static int length(oop java_string) { | |
6057 | 151 assert(initialized, "Must be initialized"); |
0 | 152 assert(is_instance(java_string), "must be java_string"); |
6057 | 153 if (count_offset > 0) { |
154 return java_string->int_field(count_offset); | |
155 } else { | |
156 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
157 } | |
0 | 158 } |
159 static int utf8_length(oop java_string); | |
160 | |
161 // String converters | |
162 static char* as_utf8_string(oop java_string); | |
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163 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
0 | 164 static char* as_utf8_string(oop java_string, int start, int len); |
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165 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
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166 static jchar* as_unicode_string(oop java_string, int& length, TRAPS); |
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167 // produce an ascii string with all other values quoted using \u#### |
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168 static char* as_quoted_ascii(oop java_string); |
0 | 169 |
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170 // Compute the hash value for a java.lang.String object which would |
6162 | 171 // contain the characters passed in. |
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172 // |
6162 | 173 // As the hash value used by the String object itself, in |
174 // String.hashCode(). This value is normally calculated in Java code | |
175 // in the String.hashCode method(), but is precomputed for String | |
176 // objects in the shared archive file. | |
177 // hash P(31) from Kernighan & Ritchie | |
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178 // |
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179 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode(). |
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180 template <typename T> static unsigned int hash_code(T* s, int len) { |
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181 unsigned int h = 0; |
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182 while (len-- > 0) { |
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183 h = 31*h + (unsigned int) *s; |
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184 s++; |
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185 } |
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186 return h; |
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187 } |
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188 static unsigned int hash_code(oop java_string); |
6162 | 189 |
190 // This is the string hash code used by the StringTable, which may be | |
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191 // the same as String.hashCode or an alternate hash code. |
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192 static unsigned int hash_string(oop java_string); |
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193 |
0 | 194 static bool equals(oop java_string, jchar* chars, int len); |
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195 static bool equals(oop str1, oop str2); |
0 | 196 |
197 // Conversion between '.' and '/' formats | |
198 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
199 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
200 | |
201 // Conversion | |
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202 static Symbol* as_symbol(Handle java_string, TRAPS); |
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203 static Symbol* as_symbol_or_null(oop java_string); |
0 | 204 |
205 // Testers | |
206 static bool is_instance(oop obj) { | |
1142 | 207 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 208 } |
209 | |
210 // Debugging | |
211 static void print(Handle java_string, outputStream* st); | |
212 friend class JavaClasses; | |
213 }; | |
214 | |
215 | |
216 // Interface to java.lang.Class objects | |
217 | |
3938 | 218 #define CLASS_INJECTED_FIELDS(macro) \ |
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219 macro(java_lang_Class, klass, intptr_signature, false) \ |
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220 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 221 macro(java_lang_Class, oop_size, int_signature, false) \ |
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222 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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223 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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224 macro(java_lang_Class, init_lock, object_signature, false) \ |
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225 macro(java_lang_Class, signers, object_signature, false) |
3938 | 226 |
0 | 227 class java_lang_Class : AllStatic { |
3938 | 228 friend class VMStructs; |
229 | |
0 | 230 private: |
231 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
232 | |
3938 | 233 static int _klass_offset; |
234 static int _array_klass_offset; | |
0 | 235 |
3938 | 236 static int _oop_size_offset; |
237 static int _static_oop_field_count_offset; | |
0 | 238 |
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239 static int _protection_domain_offset; |
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240 static int _init_lock_offset; |
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241 static int _signers_offset; |
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242 |
0 | 243 static bool offsets_computed; |
244 static int classRedefinedCount_offset; | |
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245 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 246 |
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247 static void set_init_lock(oop java_class, oop init_lock); |
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248 static void set_protection_domain(oop java_class, oop protection_domain); |
0 | 249 public: |
3938 | 250 static void compute_offsets(); |
251 | |
0 | 252 // Instance creation |
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253 static oop create_mirror(KlassHandle k, Handle protection_domain, TRAPS); |
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254 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 255 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
256 // Conversion | |
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257 static Klass* as_Klass(oop java_class); |
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258 static void set_klass(oop java_class, Klass* klass); |
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259 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 260 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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261 Klass* refk_oop = NULL; |
710 | 262 BasicType result = as_BasicType(java_class, &refk_oop); |
263 (*reference_klass) = KlassHandle(refk_oop); | |
264 return result; | |
265 } | |
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266 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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267 static void print_signature(oop java_class, outputStream *st); |
0 | 268 // Testing |
132
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269 static bool is_instance(oop obj) { |
1142 | 270 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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271 } |
0 | 272 static bool is_primitive(oop java_class); |
273 static BasicType primitive_type(oop java_class); | |
274 static oop primitive_mirror(BasicType t); | |
275 // JVM_NewArray support | |
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276 static Klass* array_klass(oop java_class); |
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277 static void set_array_klass(oop java_class, Klass* klass); |
0 | 278 // compiler support for class operations |
3938 | 279 static int klass_offset_in_bytes() { return _klass_offset; } |
280 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 281 // Support for classRedefinedCount field |
282 static int classRedefinedCount(oop the_class_mirror); | |
283 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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284 |
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285 // Support for embedded per-class oops |
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286 static oop protection_domain(oop java_class); |
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287 static oop init_lock(oop java_class); |
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288 static objArrayOop signers(oop java_class); |
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289 static void set_signers(oop java_class, objArrayOop signers); |
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290 |
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291 static int oop_size(oop java_class); |
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292 static void set_oop_size(oop java_class, int size); |
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293 static int static_oop_field_count(oop java_class); |
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294 static void set_static_oop_field_count(oop java_class, int size); |
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295 |
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296 static GrowableArray<Klass*>* fixup_mirror_list() { |
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297 return _fixup_mirror_list; |
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298 } |
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299 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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300 _fixup_mirror_list = v; |
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301 } |
0 | 302 // Debugging |
303 friend class JavaClasses; | |
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304 friend class InstanceKlass; // verification code accesses offsets |
0 | 305 friend class ClassFileParser; // access to number_of_fake_fields |
306 }; | |
307 | |
308 // Interface to java.lang.Thread objects | |
309 | |
310 class java_lang_Thread : AllStatic { | |
311 private: | |
312 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
313 // so we compute the offsets at startup rather than hard-wiring them. | |
314 static int _name_offset; | |
315 static int _group_offset; | |
316 static int _contextClassLoader_offset; | |
317 static int _inheritedAccessControlContext_offset; | |
318 static int _priority_offset; | |
319 static int _eetop_offset; | |
320 static int _daemon_offset; | |
321 static int _stillborn_offset; | |
322 static int _stackSize_offset; | |
323 static int _tid_offset; | |
324 static int _thread_status_offset; | |
325 static int _park_blocker_offset; | |
326 static int _park_event_offset ; | |
327 | |
328 static void compute_offsets(); | |
329 | |
330 public: | |
331 // Instance creation | |
332 static oop create(); | |
333 // Returns the JavaThread associated with the thread obj | |
334 static JavaThread* thread(oop java_thread); | |
335 // Set JavaThread for instance | |
336 static void set_thread(oop java_thread, JavaThread* thread); | |
337 // Name | |
338 static typeArrayOop name(oop java_thread); | |
339 static void set_name(oop java_thread, typeArrayOop name); | |
340 // Priority | |
341 static ThreadPriority priority(oop java_thread); | |
342 static void set_priority(oop java_thread, ThreadPriority priority); | |
343 // Thread group | |
344 static oop threadGroup(oop java_thread); | |
345 // Stillborn | |
346 static bool is_stillborn(oop java_thread); | |
347 static void set_stillborn(oop java_thread); | |
348 // Alive (NOTE: this is not really a field, but provides the correct | |
349 // definition without doing a Java call) | |
350 static bool is_alive(oop java_thread); | |
351 // Daemon | |
352 static bool is_daemon(oop java_thread); | |
353 static void set_daemon(oop java_thread); | |
354 // Context ClassLoader | |
355 static oop context_class_loader(oop java_thread); | |
356 // Control context | |
357 static oop inherited_access_control_context(oop java_thread); | |
358 // Stack size hint | |
359 static jlong stackSize(oop java_thread); | |
360 // Thread ID | |
361 static jlong thread_id(oop java_thread); | |
362 | |
363 // Blocker object responsible for thread parking | |
364 static oop park_blocker(oop java_thread); | |
365 | |
366 // Pointer to type-stable park handler, encoded as jlong. | |
367 // Should be set when apparently null | |
368 // For details, see unsafe.cpp Unsafe_Unpark | |
369 static jlong park_event(oop java_thread); | |
370 static bool set_park_event(oop java_thread, jlong ptr); | |
371 | |
372 // Java Thread Status for JVMTI and M&M use. | |
373 // This thread status info is saved in threadStatus field of | |
374 // java.lang.Thread java class. | |
375 enum ThreadStatus { | |
376 NEW = 0, | |
377 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
378 JVMTI_THREAD_STATE_RUNNABLE, | |
379 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
380 JVMTI_THREAD_STATE_WAITING + | |
381 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
382 JVMTI_THREAD_STATE_SLEEPING, | |
383 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
384 JVMTI_THREAD_STATE_WAITING + | |
385 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
386 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
387 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
388 JVMTI_THREAD_STATE_WAITING + | |
389 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
390 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
391 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
392 JVMTI_THREAD_STATE_WAITING + | |
393 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
394 JVMTI_THREAD_STATE_PARKED, | |
395 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
396 JVMTI_THREAD_STATE_WAITING + | |
397 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
398 JVMTI_THREAD_STATE_PARKED, | |
399 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
400 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
401 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
402 }; | |
403 // Write thread status info to threadStatus field of java.lang.Thread. | |
404 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
405 // Read thread status info from threadStatus field of java.lang.Thread. | |
406 static ThreadStatus get_thread_status(oop java_thread_oop); | |
407 | |
408 static const char* thread_status_name(oop java_thread_oop); | |
409 | |
410 // Debugging | |
411 friend class JavaClasses; | |
412 }; | |
413 | |
414 // Interface to java.lang.ThreadGroup objects | |
415 | |
416 class java_lang_ThreadGroup : AllStatic { | |
417 private: | |
418 static int _parent_offset; | |
419 static int _name_offset; | |
420 static int _threads_offset; | |
421 static int _groups_offset; | |
422 static int _maxPriority_offset; | |
423 static int _destroyed_offset; | |
424 static int _daemon_offset; | |
425 static int _vmAllowSuspension_offset; | |
426 static int _nthreads_offset; | |
427 static int _ngroups_offset; | |
428 | |
429 static void compute_offsets(); | |
430 | |
431 public: | |
432 // parent ThreadGroup | |
433 static oop parent(oop java_thread_group); | |
434 // name | |
435 static typeArrayOop name(oop java_thread_group); | |
436 // ("name as oop" accessor is not necessary) | |
437 // Number of threads in group | |
438 static int nthreads(oop java_thread_group); | |
439 // threads | |
440 static objArrayOop threads(oop java_thread_group); | |
441 // Number of threads in group | |
442 static int ngroups(oop java_thread_group); | |
443 // groups | |
444 static objArrayOop groups(oop java_thread_group); | |
445 // maxPriority in group | |
446 static ThreadPriority maxPriority(oop java_thread_group); | |
447 // Destroyed | |
448 static bool is_destroyed(oop java_thread_group); | |
449 // Daemon | |
450 static bool is_daemon(oop java_thread_group); | |
451 // vmAllowSuspension | |
452 static bool is_vmAllowSuspension(oop java_thread_group); | |
453 // Debugging | |
454 friend class JavaClasses; | |
455 }; | |
456 | |
457 | |
458 | |
459 // Interface to java.lang.Throwable objects | |
460 | |
461 class java_lang_Throwable: AllStatic { | |
462 friend class BacktraceBuilder; | |
463 | |
464 private: | |
465 // Offsets | |
466 enum { | |
467 hc_backtrace_offset = 0, | |
468 hc_detailMessage_offset = 1, | |
469 hc_cause_offset = 2, // New since 1.4 | |
470 hc_stackTrace_offset = 3 // New since 1.4 | |
471 }; | |
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472 enum { |
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473 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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474 }; |
0 | 475 // Trace constants |
476 enum { | |
477 trace_methods_offset = 0, | |
478 trace_bcis_offset = 1, | |
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479 trace_mirrors_offset = 2, |
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480 trace_next_offset = 3, |
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481 trace_size = 4, |
0 | 482 trace_chunk_size = 32 |
483 }; | |
484 | |
485 static int backtrace_offset; | |
486 static int detailMessage_offset; | |
487 static int cause_offset; | |
488 static int stackTrace_offset; | |
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489 static int static_unassigned_stacktrace_offset; |
0 | 490 |
491 // Printing | |
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492 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); |
0 | 493 // StackTrace (programmatic access, new since 1.4) |
494 static void clear_stacktrace(oop throwable); | |
495 // No stack trace available | |
496 static const char* no_stack_trace_message(); | |
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497 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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498 static void set_stacktrace(oop throwable, oop st_element_array); |
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499 static oop unassigned_stacktrace(); |
0 | 500 |
501 public: | |
502 // Backtrace | |
503 static oop backtrace(oop throwable); | |
504 static void set_backtrace(oop throwable, oop value); | |
505 // Needed by JVMTI to filter out this internal field. | |
506 static int get_backtrace_offset() { return backtrace_offset;} | |
507 static int get_detailMessage_offset() { return detailMessage_offset;} | |
508 // Message | |
509 static oop message(oop throwable); | |
510 static oop message(Handle throwable); | |
511 static void set_message(oop throwable, oop value); | |
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512 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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513 int version, int bci); |
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514 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
0 | 515 static void print_stack_usage(Handle stream); |
516 | |
517 // Allocate space for backtrace (created but stack trace not filled in) | |
518 static void allocate_backtrace(Handle throwable, TRAPS); | |
519 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
520 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
521 // Fill in current stack trace, can cause GC | |
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522 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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523 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 524 // Programmatic access to stack trace |
525 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
526 static int get_stack_trace_depth(oop throwable, TRAPS); | |
527 // Printing | |
528 static void print(oop throwable, outputStream* st); | |
529 static void print(Handle throwable, outputStream* st); | |
530 static void print_stack_trace(oop throwable, outputStream* st); | |
531 // Debugging | |
532 friend class JavaClasses; | |
533 }; | |
534 | |
535 | |
536 // Interface to java.lang.reflect.AccessibleObject objects | |
537 | |
538 class java_lang_reflect_AccessibleObject: AllStatic { | |
539 private: | |
540 // Note that to reduce dependencies on the JDK we compute these | |
541 // offsets at run-time. | |
542 static int override_offset; | |
543 | |
544 static void compute_offsets(); | |
545 | |
546 public: | |
547 // Accessors | |
548 static jboolean override(oop reflect); | |
549 static void set_override(oop reflect, jboolean value); | |
550 | |
551 // Debugging | |
552 friend class JavaClasses; | |
553 }; | |
554 | |
555 | |
556 // Interface to java.lang.reflect.Method objects | |
557 | |
558 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
559 private: | |
560 // Note that to reduce dependencies on the JDK we compute these | |
561 // offsets at run-time. | |
562 static int clazz_offset; | |
563 static int name_offset; | |
564 static int returnType_offset; | |
565 static int parameterTypes_offset; | |
566 static int exceptionTypes_offset; | |
567 static int slot_offset; | |
568 static int modifiers_offset; | |
569 static int signature_offset; | |
570 static int annotations_offset; | |
571 static int parameter_annotations_offset; | |
572 static int annotation_default_offset; | |
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573 static int type_annotations_offset; |
0 | 574 |
575 static void compute_offsets(); | |
576 | |
577 public: | |
578 // Allocation | |
579 static Handle create(TRAPS); | |
580 | |
581 // Accessors | |
582 static oop clazz(oop reflect); | |
583 static void set_clazz(oop reflect, oop value); | |
584 | |
585 static oop name(oop method); | |
586 static void set_name(oop method, oop value); | |
587 | |
588 static oop return_type(oop method); | |
589 static void set_return_type(oop method, oop value); | |
590 | |
591 static oop parameter_types(oop method); | |
592 static void set_parameter_types(oop method, oop value); | |
593 | |
594 static oop exception_types(oop method); | |
595 static void set_exception_types(oop method, oop value); | |
596 | |
597 static int slot(oop reflect); | |
598 static void set_slot(oop reflect, int value); | |
599 | |
600 static int modifiers(oop method); | |
601 static void set_modifiers(oop method, int value); | |
602 | |
603 static bool has_signature_field(); | |
604 static oop signature(oop method); | |
605 static void set_signature(oop method, oop value); | |
606 | |
607 static bool has_annotations_field(); | |
608 static oop annotations(oop method); | |
609 static void set_annotations(oop method, oop value); | |
610 | |
611 static bool has_parameter_annotations_field(); | |
612 static oop parameter_annotations(oop method); | |
613 static void set_parameter_annotations(oop method, oop value); | |
614 | |
615 static bool has_annotation_default_field(); | |
616 static oop annotation_default(oop method); | |
617 static void set_annotation_default(oop method, oop value); | |
618 | |
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619 static bool has_type_annotations_field(); |
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620 static oop type_annotations(oop method); |
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621 static void set_type_annotations(oop method, oop value); |
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622 |
0 | 623 // Debugging |
624 friend class JavaClasses; | |
625 }; | |
626 | |
627 | |
628 // Interface to java.lang.reflect.Constructor objects | |
629 | |
630 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
631 private: | |
632 // Note that to reduce dependencies on the JDK we compute these | |
633 // offsets at run-time. | |
634 static int clazz_offset; | |
635 static int parameterTypes_offset; | |
636 static int exceptionTypes_offset; | |
637 static int slot_offset; | |
638 static int modifiers_offset; | |
639 static int signature_offset; | |
640 static int annotations_offset; | |
641 static int parameter_annotations_offset; | |
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642 static int type_annotations_offset; |
0 | 643 |
644 static void compute_offsets(); | |
645 | |
646 public: | |
647 // Allocation | |
648 static Handle create(TRAPS); | |
649 | |
650 // Accessors | |
651 static oop clazz(oop reflect); | |
652 static void set_clazz(oop reflect, oop value); | |
653 | |
654 static oop parameter_types(oop constructor); | |
655 static void set_parameter_types(oop constructor, oop value); | |
656 | |
657 static oop exception_types(oop constructor); | |
658 static void set_exception_types(oop constructor, oop value); | |
659 | |
660 static int slot(oop reflect); | |
661 static void set_slot(oop reflect, int value); | |
662 | |
663 static int modifiers(oop constructor); | |
664 static void set_modifiers(oop constructor, int value); | |
665 | |
666 static bool has_signature_field(); | |
667 static oop signature(oop constructor); | |
668 static void set_signature(oop constructor, oop value); | |
669 | |
670 static bool has_annotations_field(); | |
671 static oop annotations(oop constructor); | |
672 static void set_annotations(oop constructor, oop value); | |
673 | |
674 static bool has_parameter_annotations_field(); | |
675 static oop parameter_annotations(oop method); | |
676 static void set_parameter_annotations(oop method, oop value); | |
677 | |
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678 static bool has_type_annotations_field(); |
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679 static oop type_annotations(oop constructor); |
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680 static void set_type_annotations(oop constructor, oop value); |
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681 |
0 | 682 // Debugging |
683 friend class JavaClasses; | |
684 }; | |
685 | |
686 | |
687 // Interface to java.lang.reflect.Field objects | |
688 | |
689 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
690 private: | |
691 // Note that to reduce dependencies on the JDK we compute these | |
692 // offsets at run-time. | |
693 static int clazz_offset; | |
694 static int name_offset; | |
695 static int type_offset; | |
696 static int slot_offset; | |
697 static int modifiers_offset; | |
698 static int signature_offset; | |
699 static int annotations_offset; | |
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700 static int type_annotations_offset; |
0 | 701 |
702 static void compute_offsets(); | |
703 | |
704 public: | |
705 // Allocation | |
706 static Handle create(TRAPS); | |
707 | |
708 // Accessors | |
709 static oop clazz(oop reflect); | |
710 static void set_clazz(oop reflect, oop value); | |
711 | |
712 static oop name(oop field); | |
713 static void set_name(oop field, oop value); | |
714 | |
715 static oop type(oop field); | |
716 static void set_type(oop field, oop value); | |
717 | |
718 static int slot(oop reflect); | |
719 static void set_slot(oop reflect, int value); | |
720 | |
721 static int modifiers(oop field); | |
722 static void set_modifiers(oop field, int value); | |
723 | |
724 static bool has_signature_field(); | |
725 static oop signature(oop constructor); | |
726 static void set_signature(oop constructor, oop value); | |
727 | |
728 static bool has_annotations_field(); | |
729 static oop annotations(oop constructor); | |
730 static void set_annotations(oop constructor, oop value); | |
731 | |
732 static bool has_parameter_annotations_field(); | |
733 static oop parameter_annotations(oop method); | |
734 static void set_parameter_annotations(oop method, oop value); | |
735 | |
736 static bool has_annotation_default_field(); | |
737 static oop annotation_default(oop method); | |
738 static void set_annotation_default(oop method, oop value); | |
739 | |
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740 static bool has_type_annotations_field(); |
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741 static oop type_annotations(oop field); |
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742 static void set_type_annotations(oop field, oop value); |
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743 |
0 | 744 // Debugging |
745 friend class JavaClasses; | |
746 }; | |
747 | |
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748 class java_lang_reflect_Parameter { |
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749 private: |
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750 // Note that to reduce dependencies on the JDK we compute these |
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751 // offsets at run-time. |
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752 static int name_offset; |
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753 static int modifiers_offset; |
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754 static int index_offset; |
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755 static int executable_offset; |
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756 |
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757 static void compute_offsets(); |
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758 |
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759 public: |
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760 // Allocation |
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761 static Handle create(TRAPS); |
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762 |
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763 // Accessors |
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764 static oop name(oop field); |
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765 static void set_name(oop field, oop value); |
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766 |
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767 static int index(oop reflect); |
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768 static void set_index(oop reflect, int value); |
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769 |
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770 static int modifiers(oop reflect); |
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771 static void set_modifiers(oop reflect, int value); |
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772 |
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773 static oop executable(oop constructor); |
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774 static void set_executable(oop constructor, oop value); |
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775 |
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776 friend class JavaClasses; |
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777 }; |
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778 |
0 | 779 // Interface to sun.reflect.ConstantPool objects |
780 class sun_reflect_ConstantPool { | |
781 private: | |
782 // Note that to reduce dependencies on the JDK we compute these | |
783 // offsets at run-time. | |
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784 static int _oop_offset; |
0 | 785 |
786 static void compute_offsets(); | |
787 | |
788 public: | |
789 // Allocation | |
790 static Handle create(TRAPS); | |
791 | |
792 // Accessors | |
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793 static void set_cp(oop reflect, ConstantPool* value); |
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794 static int oop_offset() { |
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795 return _oop_offset; |
0 | 796 } |
797 | |
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798 static ConstantPool* get_cp(oop reflect); |
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799 |
0 | 800 // Debugging |
801 friend class JavaClasses; | |
802 }; | |
803 | |
804 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
805 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
806 private: | |
807 static int _base_offset; | |
808 static void compute_offsets(); | |
809 | |
810 public: | |
811 static int base_offset() { | |
812 return _base_offset; | |
813 } | |
814 | |
815 // Debugging | |
816 friend class JavaClasses; | |
817 }; | |
818 | |
819 // Interface to java.lang primitive type boxing objects: | |
820 // - java.lang.Boolean | |
821 // - java.lang.Character | |
822 // - java.lang.Float | |
823 // - java.lang.Double | |
824 // - java.lang.Byte | |
825 // - java.lang.Short | |
826 // - java.lang.Integer | |
827 // - java.lang.Long | |
828 | |
829 // This could be separated out into 8 individual classes. | |
830 | |
831 class java_lang_boxing_object: AllStatic { | |
832 private: | |
833 enum { | |
834 hc_value_offset = 0 | |
835 }; | |
836 static int value_offset; | |
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837 static int long_value_offset; |
0 | 838 |
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839 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 840 public: |
841 // Allocation. Returns a boxed value, or NULL for invalid type. | |
842 static oop create(BasicType type, jvalue* value, TRAPS); | |
843 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
844 static BasicType get_value(oop box, jvalue* value); | |
845 static BasicType set_value(oop box, jvalue* value); | |
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846 static BasicType basic_type(oop box); |
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847 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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848 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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849 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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850 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 851 |
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852 static int value_offset_in_bytes(BasicType type) { |
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853 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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854 value_offset; |
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855 } |
0 | 856 |
857 // Debugging | |
858 friend class JavaClasses; | |
859 }; | |
860 | |
861 | |
862 | |
863 // Interface to java.lang.ref.Reference objects | |
864 | |
865 class java_lang_ref_Reference: AllStatic { | |
866 public: | |
867 enum { | |
868 hc_referent_offset = 0, | |
869 hc_queue_offset = 1, | |
870 hc_next_offset = 2, | |
871 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
872 }; | |
873 enum { | |
874 hc_static_lock_offset = 0, | |
875 hc_static_pending_offset = 1 | |
876 }; | |
877 | |
878 static int referent_offset; | |
879 static int queue_offset; | |
880 static int next_offset; | |
881 static int discovered_offset; | |
882 static int static_lock_offset; | |
883 static int static_pending_offset; | |
884 static int number_of_fake_oop_fields; | |
885 | |
886 // Accessors | |
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887 static oop referent(oop ref) { |
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888 return ref->obj_field(referent_offset); |
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889 } |
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890 static void set_referent(oop ref, oop value) { |
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891 ref->obj_field_put(referent_offset, value); |
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892 } |
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893 static void set_referent_raw(oop ref, oop value) { |
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894 ref->obj_field_put_raw(referent_offset, value); |
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895 } |
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896 static HeapWord* referent_addr(oop ref) { |
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897 return ref->obj_field_addr<HeapWord>(referent_offset); |
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898 } |
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899 static oop next(oop ref) { |
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900 return ref->obj_field(next_offset); |
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901 } |
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902 static void set_next(oop ref, oop value) { |
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903 ref->obj_field_put(next_offset, value); |
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904 } |
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905 static void set_next_raw(oop ref, oop value) { |
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906 ref->obj_field_put_raw(next_offset, value); |
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907 } |
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908 static HeapWord* next_addr(oop ref) { |
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909 return ref->obj_field_addr<HeapWord>(next_offset); |
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910 } |
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911 static oop discovered(oop ref) { |
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912 return ref->obj_field(discovered_offset); |
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913 } |
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914 static void set_discovered(oop ref, oop value) { |
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915 ref->obj_field_put(discovered_offset, value); |
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916 } |
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917 static void set_discovered_raw(oop ref, oop value) { |
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918 ref->obj_field_put_raw(discovered_offset, value); |
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919 } |
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920 static HeapWord* discovered_addr(oop ref) { |
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921 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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922 } |
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923 // Accessors for statics |
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924 static oop pending_list_lock(); |
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925 static oop pending_list(); |
0 | 926 |
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927 static HeapWord* pending_list_lock_addr(); |
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928 static HeapWord* pending_list_addr(); |
0 | 929 }; |
930 | |
931 | |
932 // Interface to java.lang.ref.SoftReference objects | |
933 | |
934 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
935 public: | |
936 enum { | |
937 // The timestamp is a long field and may need to be adjusted for alignment. | |
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938 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 939 }; |
940 enum { | |
941 hc_static_clock_offset = 0 | |
942 }; | |
943 | |
944 static int timestamp_offset; | |
945 static int static_clock_offset; | |
946 | |
947 // Accessors | |
948 static jlong timestamp(oop ref); | |
949 | |
950 // Accessors for statics | |
951 static jlong clock(); | |
952 static void set_clock(jlong value); | |
953 }; | |
954 | |
955 | |
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956 // Interface to java.lang.invoke.MethodHandle objects |
710 | 957 |
958 class MethodHandleEntry; | |
959 | |
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960 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 961 friend class JavaClasses; |
962 | |
963 private: | |
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964 static int _type_offset; // the MethodType of this MH |
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965 static int _form_offset; // the LambdaForm of this MH |
710 | 966 |
967 static void compute_offsets(); | |
968 | |
969 public: | |
970 // Accessors | |
971 static oop type(oop mh); | |
972 static void set_type(oop mh, oop mtype); | |
973 | |
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974 static oop form(oop mh); |
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975 static void set_form(oop mh, oop lform); |
710 | 976 |
977 // Testers | |
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978 static bool is_subclass(Klass* klass) { |
6983 | 979 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 980 } |
981 static bool is_instance(oop obj) { | |
982 return obj != NULL && is_subclass(obj->klass()); | |
983 } | |
984 | |
985 // Accessors for code generation: | |
986 static int type_offset_in_bytes() { return _type_offset; } | |
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987 static int form_offset_in_bytes() { return _form_offset; } |
710 | 988 }; |
989 | |
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990 // Interface to java.lang.invoke.DirectMethodHandle objects |
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991 |
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992 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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993 friend class JavaClasses; |
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994 |
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995 private: |
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996 static int _member_offset; // the MemberName of this DMH |
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997 |
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998 static void compute_offsets(); |
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999 |
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1000 public: |
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1001 // Accessors |
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1002 static oop member(oop mh); |
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1003 |
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1004 // Testers |
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1005 static bool is_subclass(Klass* klass) { |
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1006 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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1007 } |
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1008 static bool is_instance(oop obj) { |
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1009 return obj != NULL && is_subclass(obj->klass()); |
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1010 } |
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1011 |
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1012 // Accessors for code generation: |
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1013 static int member_offset_in_bytes() { return _member_offset; } |
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1014 }; |
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1015 |
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1016 // Interface to java.lang.invoke.LambdaForm objects |
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1017 // (These are a private interface for managing adapter code generation.) |
3938 | 1018 |
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1019 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 1020 friend class JavaClasses; |
1021 | |
1022 private: | |
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1023 static int _vmentry_offset; // type is MemberName |
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1024 |
710 | 1025 static void compute_offsets(); |
1026 | |
1027 public: | |
1028 // Accessors | |
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1029 static oop vmentry(oop lform); |
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1030 static void set_vmentry(oop lform, oop invoker); |
710 | 1031 |
1032 // Testers | |
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1033 static bool is_subclass(Klass* klass) { |
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1034 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 1035 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 1036 } |
1037 static bool is_instance(oop obj) { | |
1038 return obj != NULL && is_subclass(obj->klass()); | |
1039 } | |
1040 | |
1041 // Accessors for code generation: | |
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1042 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 1043 }; |
1044 | |
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1045 |
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1046 // Interface to java.lang.invoke.MemberName objects |
710 | 1047 // (These are a private interface for Java code to query the class hierarchy.) |
1048 | |
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1049 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1050 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1051 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1052 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 1053 |
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1054 class java_lang_invoke_MemberName: AllStatic { |
710 | 1055 friend class JavaClasses; |
1056 | |
1057 private: | |
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1058 // From java.lang.invoke.MemberName: |
710 | 1059 // private Class<?> clazz; // class in which the method is defined |
1060 // private String name; // may be null if not yet materialized | |
1061 // private Object type; // may be null if not yet materialized | |
1062 // private int flags; // modifier bits; see reflect.Modifier | |
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1063 // private intptr vmtarget; // VM-specific target value |
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1064 // private intptr_t vmindex; // member index within class or interface |
710 | 1065 static int _clazz_offset; |
1066 static int _name_offset; | |
1067 static int _type_offset; | |
1068 static int _flags_offset; | |
1069 static int _vmtarget_offset; | |
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1070 static int _vmloader_offset; |
710 | 1071 static int _vmindex_offset; |
1072 | |
1073 static void compute_offsets(); | |
1074 | |
1075 public: | |
1076 // Accessors | |
1077 static oop clazz(oop mname); | |
1078 static void set_clazz(oop mname, oop clazz); | |
1079 | |
1080 static oop type(oop mname); | |
1081 static void set_type(oop mname, oop type); | |
1082 | |
1083 static oop name(oop mname); | |
1084 static void set_name(oop mname, oop name); | |
1085 | |
1086 static int flags(oop mname); | |
1087 static void set_flags(oop mname, int flags); | |
1088 | |
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1089 static Metadata* vmtarget(oop mname); |
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1090 static void set_vmtarget(oop mname, Metadata* target); |
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1091 #if INCLUDE_JVMTI |
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1092 static void adjust_vmtarget(oop mname, Metadata* target); |
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1093 #endif // INCLUDE_JVMTI |
710 | 1094 |
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1095 static intptr_t vmindex(oop mname); |
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1096 static void set_vmindex(oop mname, intptr_t index); |
710 | 1097 |
1098 // Testers | |
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1099 static bool is_subclass(Klass* klass) { |
6983 | 1100 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1101 } |
1102 static bool is_instance(oop obj) { | |
1103 return obj != NULL && is_subclass(obj->klass()); | |
1104 } | |
1105 | |
1106 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1107 enum { | |
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1108 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1109 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1110 MN_IS_FIELD = 0x00040000, // field |
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1111 MN_IS_TYPE = 0x00080000, // nested type |
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1112 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1113 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1114 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1115 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1116 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1117 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1118 }; |
1119 | |
1120 // Accessors for code generation: | |
1121 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1122 static int type_offset_in_bytes() { return _type_offset; } | |
1123 static int name_offset_in_bytes() { return _name_offset; } | |
1124 static int flags_offset_in_bytes() { return _flags_offset; } | |
1125 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1126 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1127 }; | |
1128 | |
1129 | |
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1130 // Interface to java.lang.invoke.MethodType objects |
710 | 1131 |
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1132 class java_lang_invoke_MethodType: AllStatic { |
710 | 1133 friend class JavaClasses; |
1134 | |
1135 private: | |
1136 static int _rtype_offset; | |
1137 static int _ptypes_offset; | |
1138 | |
1139 static void compute_offsets(); | |
1140 | |
1141 public: | |
1142 // Accessors | |
1143 static oop rtype(oop mt); | |
1144 static objArrayOop ptypes(oop mt); | |
1145 | |
1146 static oop ptype(oop mt, int index); | |
1133
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1147 static int ptype_count(oop mt); |
710 | 1148 |
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1149 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1150 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1151 |
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1152 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1153 static void print_signature(oop mt, outputStream* st); |
1154 | |
1155 static bool is_instance(oop obj) { | |
1156 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1157 } | |
1158 | |
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1159 static bool equals(oop mt1, oop mt2); |
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1160 |
710 | 1161 // Accessors for code generation: |
1162 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1163 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1164 }; | |
1165 | |
1166 | |
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1167 // Interface to java.lang.invoke.CallSite objects |
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1168 |
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1169 class java_lang_invoke_CallSite: AllStatic { |
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1170 friend class JavaClasses; |
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1171 |
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1172 private: |
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1173 static int _target_offset; |
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1174 |
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1175 static void compute_offsets(); |
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1176 |
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1177 public: |
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1178 // Accessors |
3932
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1179 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1180 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1181 |
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1182 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1183 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1184 |
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1185 // Testers |
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1186 static bool is_subclass(Klass* klass) { |
6983 | 1187 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
1135
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1188 } |
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1189 static bool is_instance(oop obj) { |
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1190 return obj != NULL && is_subclass(obj->klass()); |
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1191 } |
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1192 |
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1193 // Accessors for code generation: |
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1194 static int target_offset_in_bytes() { return _target_offset; } |
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1195 }; |
710 | 1196 |
1197 | |
0 | 1198 // Interface to java.security.AccessControlContext objects |
1199 | |
1200 class java_security_AccessControlContext: AllStatic { | |
1201 private: | |
1202 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1203 // so we compute the offsets at startup rather than hard-wiring them. | |
1204 static int _context_offset; | |
1205 static int _privilegedContext_offset; | |
1206 static int _isPrivileged_offset; | |
11010 | 1207 static int _isAuthorized_offset; |
0 | 1208 |
1209 static void compute_offsets(); | |
1210 public: | |
1211 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1212 | |
11010 | 1213 static bool is_authorized(Handle context); |
1214 | |
0 | 1215 // Debugging/initialization |
1216 friend class JavaClasses; | |
1217 }; | |
1218 | |
1219 | |
1220 // Interface to java.lang.ClassLoader objects | |
1221 | |
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1222 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1223 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1224 |
0 | 1225 class java_lang_ClassLoader : AllStatic { |
1226 private: | |
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1227 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1228 enum { |
1229 hc_parent_offset = 0 | |
1230 }; | |
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1231 static int _loader_data_offset; |
3938 | 1232 static bool offsets_computed; |
0 | 1233 static int parent_offset; |
3938 | 1234 static int parallelCapable_offset; |
1235 | |
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1236 public: |
3938 | 1237 static void compute_offsets(); |
0 | 1238 |
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1239 static ClassLoaderData** loader_data_addr(oop loader); |
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1240 static ClassLoaderData* loader_data(oop loader); |
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1241 |
0 | 1242 static oop parent(oop loader); |
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1243 static bool isAncestor(oop loader, oop cl); |
0 | 1244 |
3938 | 1245 // Support for parallelCapable field |
1246 static bool parallelCapable(oop the_class_mirror); | |
1247 | |
0 | 1248 static bool is_trusted_loader(oop loader); |
1249 | |
1250 // Fix for 4474172 | |
1251 static oop non_reflection_class_loader(oop loader); | |
1252 | |
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1253 // Testers |
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1254 static bool is_subclass(Klass* klass) { |
6983 | 1255 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1256 } |
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1257 static bool is_instance(oop obj) { |
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1258 return obj != NULL && is_subclass(obj->klass()); |
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1259 } |
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1260 |
0 | 1261 // Debugging |
1262 friend class JavaClasses; | |
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1263 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1264 }; |
1265 | |
1266 | |
1267 // Interface to java.lang.System objects | |
1268 | |
1269 class java_lang_System : AllStatic { | |
1270 private: | |
1271 enum { | |
1272 hc_static_in_offset = 0, | |
1273 hc_static_out_offset = 1, | |
11010 | 1274 hc_static_err_offset = 2, |
1275 hc_static_security_offset = 3 | |
0 | 1276 }; |
1277 | |
1278 static int static_in_offset; | |
1279 static int static_out_offset; | |
1280 static int static_err_offset; | |
11010 | 1281 static int static_security_offset; |
0 | 1282 |
1283 public: | |
1284 static int in_offset_in_bytes(); | |
1285 static int out_offset_in_bytes(); | |
1286 static int err_offset_in_bytes(); | |
1287 | |
11010 | 1288 static bool has_security_manager(); |
1289 | |
0 | 1290 // Debugging |
1291 friend class JavaClasses; | |
1292 }; | |
1293 | |
1294 | |
1295 // Interface to java.lang.StackTraceElement objects | |
1296 | |
1297 class java_lang_StackTraceElement: AllStatic { | |
1298 private: | |
1299 enum { | |
1300 hc_declaringClass_offset = 0, | |
1301 hc_methodName_offset = 1, | |
1302 hc_fileName_offset = 2, | |
1303 hc_lineNumber_offset = 3 | |
1304 }; | |
1305 | |
1306 static int declaringClass_offset; | |
1307 static int methodName_offset; | |
1308 static int fileName_offset; | |
1309 static int lineNumber_offset; | |
1310 | |
1311 public: | |
1312 // Setters | |
1313 static void set_declaringClass(oop element, oop value); | |
1314 static void set_methodName(oop element, oop value); | |
1315 static void set_fileName(oop element, oop value); | |
1316 static void set_lineNumber(oop element, int value); | |
1317 | |
1318 // Create an instance of StackTraceElement | |
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1319 static oop create(Handle mirror, int method, int version, int bci, TRAPS); |
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1320 static oop create(methodHandle method, int bci, TRAPS); |
0 | 1321 |
1322 // Debugging | |
1323 friend class JavaClasses; | |
1324 }; | |
1325 | |
1326 | |
1327 // Interface to java.lang.AssertionStatusDirectives objects | |
1328 | |
1329 class java_lang_AssertionStatusDirectives: AllStatic { | |
1330 private: | |
1331 enum { | |
1332 hc_classes_offset, | |
1333 hc_classEnabled_offset, | |
1334 hc_packages_offset, | |
1335 hc_packageEnabled_offset, | |
1336 hc_deflt_offset | |
1337 }; | |
1338 | |
1339 static int classes_offset; | |
1340 static int classEnabled_offset; | |
1341 static int packages_offset; | |
1342 static int packageEnabled_offset; | |
1343 static int deflt_offset; | |
1344 | |
1345 public: | |
1346 // Setters | |
1347 static void set_classes(oop obj, oop val); | |
1348 static void set_classEnabled(oop obj, oop val); | |
1349 static void set_packages(oop obj, oop val); | |
1350 static void set_packageEnabled(oop obj, oop val); | |
1351 static void set_deflt(oop obj, bool val); | |
1352 // Debugging | |
1353 friend class JavaClasses; | |
1354 }; | |
1355 | |
1356 | |
1357 class java_nio_Buffer: AllStatic { | |
1358 private: | |
1359 static int _limit_offset; | |
1360 | |
1361 public: | |
1362 static int limit_offset(); | |
1363 static void compute_offsets(); | |
1364 }; | |
1365 | |
1366 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1367 private: | |
1368 static int _owner_offset; | |
1369 public: | |
1370 static void initialize(TRAPS); | |
1371 static oop get_owner_threadObj(oop obj); | |
1372 }; | |
1373 | |
3938 | 1374 // Use to declare fields that need to be injected into Java classes |
1375 // for the JVM to use. The name_index and signature_index are | |
1376 // declared in vmSymbols. The may_be_java flag is used to declare | |
1377 // fields that might already exist in Java but should be injected if | |
1378 // they don't. Otherwise the field is unconditionally injected and | |
1379 // the JVM uses the injected one. This is to ensure that name | |
1380 // collisions don't occur. In general may_be_java should be false | |
1381 // unless there's a good reason. | |
1382 | |
1383 class InjectedField { | |
1384 public: | |
1385 const SystemDictionary::WKID klass_id; | |
1386 const vmSymbols::SID name_index; | |
1387 const vmSymbols::SID signature_index; | |
1388 const bool may_be_java; | |
1389 | |
1390 | |
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1391 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1392 Symbol* name() const { return lookup_symbol(name_index); } |
1393 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1394 | |
1395 int compute_offset(); | |
1396 | |
1397 // Find the Symbol for this index | |
1398 static Symbol* lookup_symbol(int symbol_index) { | |
1399 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1400 } | |
1401 }; | |
1402 | |
1403 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1404 klass##_##name##_enum, | |
1405 | |
1406 #define ALL_INJECTED_FIELDS(macro) \ | |
1407 CLASS_INJECTED_FIELDS(macro) \ | |
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1408 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1409 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1410 |
0 | 1411 // Interface to hard-coded offset checking |
1412 | |
1413 class JavaClasses : AllStatic { | |
1414 private: | |
3938 | 1415 |
1416 static InjectedField _injected_fields[]; | |
1417 | |
0 | 1418 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1419 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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1420 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1421 |
0 | 1422 public: |
3938 | 1423 enum InjectedFieldID { |
1424 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1425 MAX_enum | |
1426 }; | |
1427 | |
1428 static int compute_injected_offset(InjectedFieldID id); | |
1429 | |
0 | 1430 static void compute_hard_coded_offsets(); |
1431 static void compute_offsets(); | |
1432 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1433 |
1434 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1435 }; |
1972 | 1436 |
3938 | 1437 #undef DECLARE_INJECTED_FIELD_ENUM |
1438 | |
1972 | 1439 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |