Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 12161:e1fbb86b47e4
8016277: Crash in nmethod::is_compiled_by_c1() on x86
Summary: Method pointer for zombie methods may be invalid
Reviewed-by: kvn, coleenp
author | roland |
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date | Mon, 26 Aug 2013 16:12:20 +0200 |
parents | ca0165daa6ec |
children | 3cce976666d9 63147986a428 |
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); |
185 | |
186 // Conversion between '.' and '/' formats | |
187 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
188 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
189 | |
190 // Conversion | |
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191 static Symbol* as_symbol(Handle java_string, TRAPS); |
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192 static Symbol* as_symbol_or_null(oop java_string); |
0 | 193 |
194 // Testers | |
195 static bool is_instance(oop obj) { | |
1142 | 196 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
0 | 197 } |
198 | |
199 // Debugging | |
200 static void print(Handle java_string, outputStream* st); | |
201 friend class JavaClasses; | |
202 }; | |
203 | |
204 | |
205 // Interface to java.lang.Class objects | |
206 | |
3938 | 207 #define CLASS_INJECTED_FIELDS(macro) \ |
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208 macro(java_lang_Class, klass, intptr_signature, false) \ |
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209 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 210 macro(java_lang_Class, oop_size, int_signature, false) \ |
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211 macro(java_lang_Class, static_oop_field_count, int_signature, false) \ |
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212 macro(java_lang_Class, protection_domain, object_signature, false) \ |
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213 macro(java_lang_Class, init_lock, object_signature, false) \ |
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214 macro(java_lang_Class, signers, object_signature, false) |
3938 | 215 |
0 | 216 class java_lang_Class : AllStatic { |
3938 | 217 friend class VMStructs; |
218 | |
0 | 219 private: |
220 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
221 | |
3938 | 222 static int _klass_offset; |
223 static int _array_klass_offset; | |
0 | 224 |
3938 | 225 static int _oop_size_offset; |
226 static int _static_oop_field_count_offset; | |
0 | 227 |
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228 static int _protection_domain_offset; |
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229 static int _init_lock_offset; |
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230 static int _signers_offset; |
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231 |
0 | 232 static bool offsets_computed; |
233 static int classRedefinedCount_offset; | |
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234 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 235 |
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236 static void set_init_lock(oop java_class, oop init_lock); |
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237 static void set_protection_domain(oop java_class, oop protection_domain); |
0 | 238 public: |
3938 | 239 static void compute_offsets(); |
240 | |
0 | 241 // Instance creation |
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242 static oop create_mirror(KlassHandle k, Handle protection_domain, TRAPS); |
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243 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 244 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
245 // Conversion | |
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246 static Klass* as_Klass(oop java_class); |
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247 static void set_klass(oop java_class, Klass* klass); |
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248 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 249 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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250 Klass* refk_oop = NULL; |
710 | 251 BasicType result = as_BasicType(java_class, &refk_oop); |
252 (*reference_klass) = KlassHandle(refk_oop); | |
253 return result; | |
254 } | |
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255 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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256 static void print_signature(oop java_class, outputStream *st); |
0 | 257 // Testing |
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258 static bool is_instance(oop obj) { |
1142 | 259 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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260 } |
0 | 261 static bool is_primitive(oop java_class); |
262 static BasicType primitive_type(oop java_class); | |
263 static oop primitive_mirror(BasicType t); | |
264 // JVM_NewArray support | |
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265 static Klass* array_klass(oop java_class); |
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266 static void set_array_klass(oop java_class, Klass* klass); |
0 | 267 // compiler support for class operations |
3938 | 268 static int klass_offset_in_bytes() { return _klass_offset; } |
269 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 270 // Support for classRedefinedCount field |
271 static int classRedefinedCount(oop the_class_mirror); | |
272 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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273 |
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274 // Support for embedded per-class oops |
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275 static oop protection_domain(oop java_class); |
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276 static oop init_lock(oop java_class); |
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277 static objArrayOop signers(oop java_class); |
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278 static void set_signers(oop java_class, objArrayOop signers); |
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279 |
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280 static int oop_size(oop java_class); |
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281 static void set_oop_size(oop java_class, int size); |
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282 static int static_oop_field_count(oop java_class); |
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283 static void set_static_oop_field_count(oop java_class, int size); |
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284 |
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285 static GrowableArray<Klass*>* fixup_mirror_list() { |
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286 return _fixup_mirror_list; |
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287 } |
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288 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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289 _fixup_mirror_list = v; |
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290 } |
0 | 291 // Debugging |
292 friend class JavaClasses; | |
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293 friend class InstanceKlass; // verification code accesses offsets |
0 | 294 friend class ClassFileParser; // access to number_of_fake_fields |
295 }; | |
296 | |
297 // Interface to java.lang.Thread objects | |
298 | |
299 class java_lang_Thread : AllStatic { | |
300 private: | |
301 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
302 // so we compute the offsets at startup rather than hard-wiring them. | |
303 static int _name_offset; | |
304 static int _group_offset; | |
305 static int _contextClassLoader_offset; | |
306 static int _inheritedAccessControlContext_offset; | |
307 static int _priority_offset; | |
308 static int _eetop_offset; | |
309 static int _daemon_offset; | |
310 static int _stillborn_offset; | |
311 static int _stackSize_offset; | |
312 static int _tid_offset; | |
313 static int _thread_status_offset; | |
314 static int _park_blocker_offset; | |
315 static int _park_event_offset ; | |
316 | |
317 static void compute_offsets(); | |
318 | |
319 public: | |
320 // Instance creation | |
321 static oop create(); | |
322 // Returns the JavaThread associated with the thread obj | |
323 static JavaThread* thread(oop java_thread); | |
324 // Set JavaThread for instance | |
325 static void set_thread(oop java_thread, JavaThread* thread); | |
326 // Name | |
327 static typeArrayOop name(oop java_thread); | |
328 static void set_name(oop java_thread, typeArrayOop name); | |
329 // Priority | |
330 static ThreadPriority priority(oop java_thread); | |
331 static void set_priority(oop java_thread, ThreadPriority priority); | |
332 // Thread group | |
333 static oop threadGroup(oop java_thread); | |
334 // Stillborn | |
335 static bool is_stillborn(oop java_thread); | |
336 static void set_stillborn(oop java_thread); | |
337 // Alive (NOTE: this is not really a field, but provides the correct | |
338 // definition without doing a Java call) | |
339 static bool is_alive(oop java_thread); | |
340 // Daemon | |
341 static bool is_daemon(oop java_thread); | |
342 static void set_daemon(oop java_thread); | |
343 // Context ClassLoader | |
344 static oop context_class_loader(oop java_thread); | |
345 // Control context | |
346 static oop inherited_access_control_context(oop java_thread); | |
347 // Stack size hint | |
348 static jlong stackSize(oop java_thread); | |
349 // Thread ID | |
350 static jlong thread_id(oop java_thread); | |
351 | |
352 // Blocker object responsible for thread parking | |
353 static oop park_blocker(oop java_thread); | |
354 | |
355 // Pointer to type-stable park handler, encoded as jlong. | |
356 // Should be set when apparently null | |
357 // For details, see unsafe.cpp Unsafe_Unpark | |
358 static jlong park_event(oop java_thread); | |
359 static bool set_park_event(oop java_thread, jlong ptr); | |
360 | |
361 // Java Thread Status for JVMTI and M&M use. | |
362 // This thread status info is saved in threadStatus field of | |
363 // java.lang.Thread java class. | |
364 enum ThreadStatus { | |
365 NEW = 0, | |
366 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
367 JVMTI_THREAD_STATE_RUNNABLE, | |
368 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
369 JVMTI_THREAD_STATE_WAITING + | |
370 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
371 JVMTI_THREAD_STATE_SLEEPING, | |
372 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
373 JVMTI_THREAD_STATE_WAITING + | |
374 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
375 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
376 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
377 JVMTI_THREAD_STATE_WAITING + | |
378 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
379 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
380 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
381 JVMTI_THREAD_STATE_WAITING + | |
382 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
383 JVMTI_THREAD_STATE_PARKED, | |
384 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
385 JVMTI_THREAD_STATE_WAITING + | |
386 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
387 JVMTI_THREAD_STATE_PARKED, | |
388 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
389 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
390 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
391 }; | |
392 // Write thread status info to threadStatus field of java.lang.Thread. | |
393 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
394 // Read thread status info from threadStatus field of java.lang.Thread. | |
395 static ThreadStatus get_thread_status(oop java_thread_oop); | |
396 | |
397 static const char* thread_status_name(oop java_thread_oop); | |
398 | |
399 // Debugging | |
400 friend class JavaClasses; | |
401 }; | |
402 | |
403 // Interface to java.lang.ThreadGroup objects | |
404 | |
405 class java_lang_ThreadGroup : AllStatic { | |
406 private: | |
407 static int _parent_offset; | |
408 static int _name_offset; | |
409 static int _threads_offset; | |
410 static int _groups_offset; | |
411 static int _maxPriority_offset; | |
412 static int _destroyed_offset; | |
413 static int _daemon_offset; | |
414 static int _vmAllowSuspension_offset; | |
415 static int _nthreads_offset; | |
416 static int _ngroups_offset; | |
417 | |
418 static void compute_offsets(); | |
419 | |
420 public: | |
421 // parent ThreadGroup | |
422 static oop parent(oop java_thread_group); | |
423 // name | |
424 static typeArrayOop name(oop java_thread_group); | |
425 // ("name as oop" accessor is not necessary) | |
426 // Number of threads in group | |
427 static int nthreads(oop java_thread_group); | |
428 // threads | |
429 static objArrayOop threads(oop java_thread_group); | |
430 // Number of threads in group | |
431 static int ngroups(oop java_thread_group); | |
432 // groups | |
433 static objArrayOop groups(oop java_thread_group); | |
434 // maxPriority in group | |
435 static ThreadPriority maxPriority(oop java_thread_group); | |
436 // Destroyed | |
437 static bool is_destroyed(oop java_thread_group); | |
438 // Daemon | |
439 static bool is_daemon(oop java_thread_group); | |
440 // vmAllowSuspension | |
441 static bool is_vmAllowSuspension(oop java_thread_group); | |
442 // Debugging | |
443 friend class JavaClasses; | |
444 }; | |
445 | |
446 | |
447 | |
448 // Interface to java.lang.Throwable objects | |
449 | |
450 class java_lang_Throwable: AllStatic { | |
451 friend class BacktraceBuilder; | |
452 | |
453 private: | |
454 // Offsets | |
455 enum { | |
456 hc_backtrace_offset = 0, | |
457 hc_detailMessage_offset = 1, | |
458 hc_cause_offset = 2, // New since 1.4 | |
459 hc_stackTrace_offset = 3 // New since 1.4 | |
460 }; | |
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461 enum { |
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462 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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463 }; |
0 | 464 // Trace constants |
465 enum { | |
466 trace_methods_offset = 0, | |
467 trace_bcis_offset = 1, | |
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468 trace_mirrors_offset = 2, |
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469 trace_next_offset = 3, |
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470 trace_size = 4, |
0 | 471 trace_chunk_size = 32 |
472 }; | |
473 | |
474 static int backtrace_offset; | |
475 static int detailMessage_offset; | |
476 static int cause_offset; | |
477 static int stackTrace_offset; | |
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478 static int static_unassigned_stacktrace_offset; |
0 | 479 |
480 // Printing | |
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481 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci); |
0 | 482 // StackTrace (programmatic access, new since 1.4) |
483 static void clear_stacktrace(oop throwable); | |
484 // No stack trace available | |
485 static const char* no_stack_trace_message(); | |
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486 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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487 static void set_stacktrace(oop throwable, oop st_element_array); |
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488 static oop unassigned_stacktrace(); |
0 | 489 |
490 public: | |
491 // Backtrace | |
492 static oop backtrace(oop throwable); | |
493 static void set_backtrace(oop throwable, oop value); | |
494 // Needed by JVMTI to filter out this internal field. | |
495 static int get_backtrace_offset() { return backtrace_offset;} | |
496 static int get_detailMessage_offset() { return detailMessage_offset;} | |
497 // Message | |
498 static oop message(oop throwable); | |
499 static oop message(Handle throwable); | |
500 static void set_message(oop throwable, oop value); | |
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501 static void print_stack_element(outputStream *st, Handle mirror, int method, |
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502 int version, int bci); |
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503 static void print_stack_element(outputStream *st, methodHandle method, int bci); |
0 | 504 static void print_stack_usage(Handle stream); |
505 | |
506 // Allocate space for backtrace (created but stack trace not filled in) | |
507 static void allocate_backtrace(Handle throwable, TRAPS); | |
508 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
509 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
510 // Fill in current stack trace, can cause GC | |
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511 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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512 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 513 // Programmatic access to stack trace |
514 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
515 static int get_stack_trace_depth(oop throwable, TRAPS); | |
516 // Printing | |
517 static void print(oop throwable, outputStream* st); | |
518 static void print(Handle throwable, outputStream* st); | |
519 static void print_stack_trace(oop throwable, outputStream* st); | |
520 // Debugging | |
521 friend class JavaClasses; | |
522 }; | |
523 | |
524 | |
525 // Interface to java.lang.reflect.AccessibleObject objects | |
526 | |
527 class java_lang_reflect_AccessibleObject: AllStatic { | |
528 private: | |
529 // Note that to reduce dependencies on the JDK we compute these | |
530 // offsets at run-time. | |
531 static int override_offset; | |
532 | |
533 static void compute_offsets(); | |
534 | |
535 public: | |
536 // Accessors | |
537 static jboolean override(oop reflect); | |
538 static void set_override(oop reflect, jboolean value); | |
539 | |
540 // Debugging | |
541 friend class JavaClasses; | |
542 }; | |
543 | |
544 | |
545 // Interface to java.lang.reflect.Method objects | |
546 | |
547 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
548 private: | |
549 // Note that to reduce dependencies on the JDK we compute these | |
550 // offsets at run-time. | |
551 static int clazz_offset; | |
552 static int name_offset; | |
553 static int returnType_offset; | |
554 static int parameterTypes_offset; | |
555 static int exceptionTypes_offset; | |
556 static int slot_offset; | |
557 static int modifiers_offset; | |
558 static int signature_offset; | |
559 static int annotations_offset; | |
560 static int parameter_annotations_offset; | |
561 static int annotation_default_offset; | |
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562 static int type_annotations_offset; |
0 | 563 |
564 static void compute_offsets(); | |
565 | |
566 public: | |
567 // Allocation | |
568 static Handle create(TRAPS); | |
569 | |
570 // Accessors | |
571 static oop clazz(oop reflect); | |
572 static void set_clazz(oop reflect, oop value); | |
573 | |
574 static oop name(oop method); | |
575 static void set_name(oop method, oop value); | |
576 | |
577 static oop return_type(oop method); | |
578 static void set_return_type(oop method, oop value); | |
579 | |
580 static oop parameter_types(oop method); | |
581 static void set_parameter_types(oop method, oop value); | |
582 | |
583 static oop exception_types(oop method); | |
584 static void set_exception_types(oop method, oop value); | |
585 | |
586 static int slot(oop reflect); | |
587 static void set_slot(oop reflect, int value); | |
588 | |
589 static int modifiers(oop method); | |
590 static void set_modifiers(oop method, int value); | |
591 | |
592 static bool has_signature_field(); | |
593 static oop signature(oop method); | |
594 static void set_signature(oop method, oop value); | |
595 | |
596 static bool has_annotations_field(); | |
597 static oop annotations(oop method); | |
598 static void set_annotations(oop method, oop value); | |
599 | |
600 static bool has_parameter_annotations_field(); | |
601 static oop parameter_annotations(oop method); | |
602 static void set_parameter_annotations(oop method, oop value); | |
603 | |
604 static bool has_annotation_default_field(); | |
605 static oop annotation_default(oop method); | |
606 static void set_annotation_default(oop method, oop value); | |
607 | |
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608 static bool has_type_annotations_field(); |
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609 static oop type_annotations(oop method); |
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610 static void set_type_annotations(oop method, oop value); |
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611 |
0 | 612 // Debugging |
613 friend class JavaClasses; | |
614 }; | |
615 | |
616 | |
617 // Interface to java.lang.reflect.Constructor objects | |
618 | |
619 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
620 private: | |
621 // Note that to reduce dependencies on the JDK we compute these | |
622 // offsets at run-time. | |
623 static int clazz_offset; | |
624 static int parameterTypes_offset; | |
625 static int exceptionTypes_offset; | |
626 static int slot_offset; | |
627 static int modifiers_offset; | |
628 static int signature_offset; | |
629 static int annotations_offset; | |
630 static int parameter_annotations_offset; | |
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631 static int type_annotations_offset; |
0 | 632 |
633 static void compute_offsets(); | |
634 | |
635 public: | |
636 // Allocation | |
637 static Handle create(TRAPS); | |
638 | |
639 // Accessors | |
640 static oop clazz(oop reflect); | |
641 static void set_clazz(oop reflect, oop value); | |
642 | |
643 static oop parameter_types(oop constructor); | |
644 static void set_parameter_types(oop constructor, oop value); | |
645 | |
646 static oop exception_types(oop constructor); | |
647 static void set_exception_types(oop constructor, oop value); | |
648 | |
649 static int slot(oop reflect); | |
650 static void set_slot(oop reflect, int value); | |
651 | |
652 static int modifiers(oop constructor); | |
653 static void set_modifiers(oop constructor, int value); | |
654 | |
655 static bool has_signature_field(); | |
656 static oop signature(oop constructor); | |
657 static void set_signature(oop constructor, oop value); | |
658 | |
659 static bool has_annotations_field(); | |
660 static oop annotations(oop constructor); | |
661 static void set_annotations(oop constructor, oop value); | |
662 | |
663 static bool has_parameter_annotations_field(); | |
664 static oop parameter_annotations(oop method); | |
665 static void set_parameter_annotations(oop method, oop value); | |
666 | |
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667 static bool has_type_annotations_field(); |
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668 static oop type_annotations(oop constructor); |
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669 static void set_type_annotations(oop constructor, oop value); |
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670 |
0 | 671 // Debugging |
672 friend class JavaClasses; | |
673 }; | |
674 | |
675 | |
676 // Interface to java.lang.reflect.Field objects | |
677 | |
678 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
679 private: | |
680 // Note that to reduce dependencies on the JDK we compute these | |
681 // offsets at run-time. | |
682 static int clazz_offset; | |
683 static int name_offset; | |
684 static int type_offset; | |
685 static int slot_offset; | |
686 static int modifiers_offset; | |
687 static int signature_offset; | |
688 static int annotations_offset; | |
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689 static int type_annotations_offset; |
0 | 690 |
691 static void compute_offsets(); | |
692 | |
693 public: | |
694 // Allocation | |
695 static Handle create(TRAPS); | |
696 | |
697 // Accessors | |
698 static oop clazz(oop reflect); | |
699 static void set_clazz(oop reflect, oop value); | |
700 | |
701 static oop name(oop field); | |
702 static void set_name(oop field, oop value); | |
703 | |
704 static oop type(oop field); | |
705 static void set_type(oop field, oop value); | |
706 | |
707 static int slot(oop reflect); | |
708 static void set_slot(oop reflect, int value); | |
709 | |
710 static int modifiers(oop field); | |
711 static void set_modifiers(oop field, int value); | |
712 | |
713 static bool has_signature_field(); | |
714 static oop signature(oop constructor); | |
715 static void set_signature(oop constructor, oop value); | |
716 | |
717 static bool has_annotations_field(); | |
718 static oop annotations(oop constructor); | |
719 static void set_annotations(oop constructor, oop value); | |
720 | |
721 static bool has_parameter_annotations_field(); | |
722 static oop parameter_annotations(oop method); | |
723 static void set_parameter_annotations(oop method, oop value); | |
724 | |
725 static bool has_annotation_default_field(); | |
726 static oop annotation_default(oop method); | |
727 static void set_annotation_default(oop method, oop value); | |
728 | |
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729 static bool has_type_annotations_field(); |
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730 static oop type_annotations(oop field); |
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731 static void set_type_annotations(oop field, oop value); |
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732 |
0 | 733 // Debugging |
734 friend class JavaClasses; | |
735 }; | |
736 | |
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737 class java_lang_reflect_Parameter { |
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738 private: |
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739 // Note that to reduce dependencies on the JDK we compute these |
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740 // offsets at run-time. |
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741 static int name_offset; |
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742 static int modifiers_offset; |
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743 static int index_offset; |
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744 static int executable_offset; |
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745 |
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746 static void compute_offsets(); |
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747 |
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748 public: |
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749 // Allocation |
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750 static Handle create(TRAPS); |
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751 |
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752 // Accessors |
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753 static oop name(oop field); |
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754 static void set_name(oop field, oop value); |
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755 |
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756 static int index(oop reflect); |
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757 static void set_index(oop reflect, int value); |
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758 |
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759 static int modifiers(oop reflect); |
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760 static void set_modifiers(oop reflect, int value); |
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761 |
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762 static oop executable(oop constructor); |
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763 static void set_executable(oop constructor, oop value); |
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764 |
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765 friend class JavaClasses; |
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766 }; |
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767 |
0 | 768 // Interface to sun.reflect.ConstantPool objects |
769 class sun_reflect_ConstantPool { | |
770 private: | |
771 // Note that to reduce dependencies on the JDK we compute these | |
772 // offsets at run-time. | |
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773 static int _oop_offset; |
0 | 774 |
775 static void compute_offsets(); | |
776 | |
777 public: | |
778 // Allocation | |
779 static Handle create(TRAPS); | |
780 | |
781 // Accessors | |
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782 static void set_cp(oop reflect, ConstantPool* value); |
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783 static int oop_offset() { |
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784 return _oop_offset; |
0 | 785 } |
786 | |
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787 static ConstantPool* get_cp(oop reflect); |
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788 |
0 | 789 // Debugging |
790 friend class JavaClasses; | |
791 }; | |
792 | |
793 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
794 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
795 private: | |
796 static int _base_offset; | |
797 static void compute_offsets(); | |
798 | |
799 public: | |
800 static int base_offset() { | |
801 return _base_offset; | |
802 } | |
803 | |
804 // Debugging | |
805 friend class JavaClasses; | |
806 }; | |
807 | |
808 // Interface to java.lang primitive type boxing objects: | |
809 // - java.lang.Boolean | |
810 // - java.lang.Character | |
811 // - java.lang.Float | |
812 // - java.lang.Double | |
813 // - java.lang.Byte | |
814 // - java.lang.Short | |
815 // - java.lang.Integer | |
816 // - java.lang.Long | |
817 | |
818 // This could be separated out into 8 individual classes. | |
819 | |
820 class java_lang_boxing_object: AllStatic { | |
821 private: | |
822 enum { | |
823 hc_value_offset = 0 | |
824 }; | |
825 static int value_offset; | |
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826 static int long_value_offset; |
0 | 827 |
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828 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 829 public: |
830 // Allocation. Returns a boxed value, or NULL for invalid type. | |
831 static oop create(BasicType type, jvalue* value, TRAPS); | |
832 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
833 static BasicType get_value(oop box, jvalue* value); | |
834 static BasicType set_value(oop box, jvalue* value); | |
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835 static BasicType basic_type(oop box); |
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836 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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837 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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838 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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839 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 840 |
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841 static int value_offset_in_bytes(BasicType type) { |
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842 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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843 value_offset; |
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844 } |
0 | 845 |
846 // Debugging | |
847 friend class JavaClasses; | |
848 }; | |
849 | |
850 | |
851 | |
852 // Interface to java.lang.ref.Reference objects | |
853 | |
854 class java_lang_ref_Reference: AllStatic { | |
855 public: | |
856 enum { | |
857 hc_referent_offset = 0, | |
858 hc_queue_offset = 1, | |
859 hc_next_offset = 2, | |
860 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
861 }; | |
862 enum { | |
863 hc_static_lock_offset = 0, | |
864 hc_static_pending_offset = 1 | |
865 }; | |
866 | |
867 static int referent_offset; | |
868 static int queue_offset; | |
869 static int next_offset; | |
870 static int discovered_offset; | |
871 static int static_lock_offset; | |
872 static int static_pending_offset; | |
873 static int number_of_fake_oop_fields; | |
874 | |
875 // Accessors | |
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876 static oop referent(oop ref) { |
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877 return ref->obj_field(referent_offset); |
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878 } |
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879 static void set_referent(oop ref, oop value) { |
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880 ref->obj_field_put(referent_offset, value); |
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881 } |
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882 static void set_referent_raw(oop ref, oop value) { |
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883 ref->obj_field_put_raw(referent_offset, value); |
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884 } |
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885 static HeapWord* referent_addr(oop ref) { |
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886 return ref->obj_field_addr<HeapWord>(referent_offset); |
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887 } |
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888 static oop next(oop ref) { |
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889 return ref->obj_field(next_offset); |
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890 } |
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891 static void set_next(oop ref, oop value) { |
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892 ref->obj_field_put(next_offset, value); |
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893 } |
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894 static void set_next_raw(oop ref, oop value) { |
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895 ref->obj_field_put_raw(next_offset, value); |
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896 } |
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897 static HeapWord* next_addr(oop ref) { |
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898 return ref->obj_field_addr<HeapWord>(next_offset); |
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899 } |
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900 static oop discovered(oop ref) { |
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901 return ref->obj_field(discovered_offset); |
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902 } |
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903 static void set_discovered(oop ref, oop value) { |
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904 ref->obj_field_put(discovered_offset, value); |
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905 } |
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906 static void set_discovered_raw(oop ref, oop value) { |
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907 ref->obj_field_put_raw(discovered_offset, value); |
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908 } |
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909 static HeapWord* discovered_addr(oop ref) { |
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910 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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911 } |
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912 // Accessors for statics |
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913 static oop pending_list_lock(); |
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914 static oop pending_list(); |
0 | 915 |
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916 static HeapWord* pending_list_lock_addr(); |
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917 static HeapWord* pending_list_addr(); |
0 | 918 }; |
919 | |
920 | |
921 // Interface to java.lang.ref.SoftReference objects | |
922 | |
923 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
924 public: | |
925 enum { | |
926 // The timestamp is a long field and may need to be adjusted for alignment. | |
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927 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 928 }; |
929 enum { | |
930 hc_static_clock_offset = 0 | |
931 }; | |
932 | |
933 static int timestamp_offset; | |
934 static int static_clock_offset; | |
935 | |
936 // Accessors | |
937 static jlong timestamp(oop ref); | |
938 | |
939 // Accessors for statics | |
940 static jlong clock(); | |
941 static void set_clock(jlong value); | |
942 }; | |
943 | |
944 | |
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945 // Interface to java.lang.invoke.MethodHandle objects |
710 | 946 |
947 class MethodHandleEntry; | |
948 | |
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949 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 950 friend class JavaClasses; |
951 | |
952 private: | |
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953 static int _type_offset; // the MethodType of this MH |
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954 static int _form_offset; // the LambdaForm of this MH |
710 | 955 |
956 static void compute_offsets(); | |
957 | |
958 public: | |
959 // Accessors | |
960 static oop type(oop mh); | |
961 static void set_type(oop mh, oop mtype); | |
962 | |
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963 static oop form(oop mh); |
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964 static void set_form(oop mh, oop lform); |
710 | 965 |
966 // Testers | |
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967 static bool is_subclass(Klass* klass) { |
6983 | 968 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 969 } |
970 static bool is_instance(oop obj) { | |
971 return obj != NULL && is_subclass(obj->klass()); | |
972 } | |
973 | |
974 // Accessors for code generation: | |
975 static int type_offset_in_bytes() { return _type_offset; } | |
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976 static int form_offset_in_bytes() { return _form_offset; } |
710 | 977 }; |
978 | |
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979 // Interface to java.lang.invoke.DirectMethodHandle objects |
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980 |
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981 class java_lang_invoke_DirectMethodHandle: AllStatic { |
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982 friend class JavaClasses; |
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983 |
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984 private: |
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985 static int _member_offset; // the MemberName of this DMH |
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986 |
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987 static void compute_offsets(); |
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988 |
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989 public: |
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990 // Accessors |
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991 static oop member(oop mh); |
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992 |
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993 // Testers |
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994 static bool is_subclass(Klass* klass) { |
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995 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); |
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996 } |
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997 static bool is_instance(oop obj) { |
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998 return obj != NULL && is_subclass(obj->klass()); |
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999 } |
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1000 |
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1001 // Accessors for code generation: |
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1002 static int member_offset_in_bytes() { return _member_offset; } |
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1003 }; |
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1004 |
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1005 // Interface to java.lang.invoke.LambdaForm objects |
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1006 // (These are a private interface for managing adapter code generation.) |
3938 | 1007 |
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1008 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 1009 friend class JavaClasses; |
1010 | |
1011 private: | |
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1012 static int _vmentry_offset; // type is MemberName |
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1013 |
710 | 1014 static void compute_offsets(); |
1015 | |
1016 public: | |
1017 // Accessors | |
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1018 static oop vmentry(oop lform); |
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1019 static void set_vmentry(oop lform, oop invoker); |
710 | 1020 |
1021 // Testers | |
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1022 static bool is_subclass(Klass* klass) { |
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1023 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 1024 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 1025 } |
1026 static bool is_instance(oop obj) { | |
1027 return obj != NULL && is_subclass(obj->klass()); | |
1028 } | |
1029 | |
1030 // Accessors for code generation: | |
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1031 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 1032 }; |
1033 | |
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1034 |
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1035 // Interface to java.lang.invoke.MemberName objects |
710 | 1036 // (These are a private interface for Java code to query the class hierarchy.) |
1037 | |
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1038 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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1039 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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1040 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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1041 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 1042 |
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1043 class java_lang_invoke_MemberName: AllStatic { |
710 | 1044 friend class JavaClasses; |
1045 | |
1046 private: | |
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1047 // From java.lang.invoke.MemberName: |
710 | 1048 // private Class<?> clazz; // class in which the method is defined |
1049 // private String name; // may be null if not yet materialized | |
1050 // private Object type; // may be null if not yet materialized | |
1051 // private int flags; // modifier bits; see reflect.Modifier | |
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1052 // private intptr vmtarget; // VM-specific target value |
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1053 // private intptr_t vmindex; // member index within class or interface |
710 | 1054 static int _clazz_offset; |
1055 static int _name_offset; | |
1056 static int _type_offset; | |
1057 static int _flags_offset; | |
1058 static int _vmtarget_offset; | |
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1059 static int _vmloader_offset; |
710 | 1060 static int _vmindex_offset; |
1061 | |
1062 static void compute_offsets(); | |
1063 | |
1064 public: | |
1065 // Accessors | |
1066 static oop clazz(oop mname); | |
1067 static void set_clazz(oop mname, oop clazz); | |
1068 | |
1069 static oop type(oop mname); | |
1070 static void set_type(oop mname, oop type); | |
1071 | |
1072 static oop name(oop mname); | |
1073 static void set_name(oop mname, oop name); | |
1074 | |
1075 static int flags(oop mname); | |
1076 static void set_flags(oop mname, int flags); | |
1077 | |
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1078 static Metadata* vmtarget(oop mname); |
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1079 static void set_vmtarget(oop mname, Metadata* target); |
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1080 #if INCLUDE_JVMTI |
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1081 static void adjust_vmtarget(oop mname, Metadata* target); |
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1082 #endif // INCLUDE_JVMTI |
710 | 1083 |
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1084 static intptr_t vmindex(oop mname); |
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1085 static void set_vmindex(oop mname, intptr_t index); |
710 | 1086 |
1087 // Testers | |
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1088 static bool is_subclass(Klass* klass) { |
6983 | 1089 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1090 } |
1091 static bool is_instance(oop obj) { | |
1092 return obj != NULL && is_subclass(obj->klass()); | |
1093 } | |
1094 | |
1095 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1096 enum { | |
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1097 MN_IS_METHOD = 0x00010000, // method (not constructor) |
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1098 MN_IS_CONSTRUCTOR = 0x00020000, // constructor |
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1099 MN_IS_FIELD = 0x00040000, // field |
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1100 MN_IS_TYPE = 0x00080000, // nested type |
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1101 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected |
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1102 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1103 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1104 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1105 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1106 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1107 }; |
1108 | |
1109 // Accessors for code generation: | |
1110 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1111 static int type_offset_in_bytes() { return _type_offset; } | |
1112 static int name_offset_in_bytes() { return _name_offset; } | |
1113 static int flags_offset_in_bytes() { return _flags_offset; } | |
1114 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1115 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1116 }; | |
1117 | |
1118 | |
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1119 // Interface to java.lang.invoke.MethodType objects |
710 | 1120 |
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1121 class java_lang_invoke_MethodType: AllStatic { |
710 | 1122 friend class JavaClasses; |
1123 | |
1124 private: | |
1125 static int _rtype_offset; | |
1126 static int _ptypes_offset; | |
1127 | |
1128 static void compute_offsets(); | |
1129 | |
1130 public: | |
1131 // Accessors | |
1132 static oop rtype(oop mt); | |
1133 static objArrayOop ptypes(oop mt); | |
1134 | |
1135 static oop ptype(oop mt, int index); | |
1133
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1136 static int ptype_count(oop mt); |
710 | 1137 |
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1138 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1139 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1140 |
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1141 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1142 static void print_signature(oop mt, outputStream* st); |
1143 | |
1144 static bool is_instance(oop obj) { | |
1145 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1146 } | |
1147 | |
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1148 static bool equals(oop mt1, oop mt2); |
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1149 |
710 | 1150 // Accessors for code generation: |
1151 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1152 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1153 }; | |
1154 | |
1155 | |
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1156 // Interface to java.lang.invoke.CallSite objects |
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1157 |
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1158 class java_lang_invoke_CallSite: AllStatic { |
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1159 friend class JavaClasses; |
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1160 |
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1161 private: |
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1162 static int _target_offset; |
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1163 |
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1164 static void compute_offsets(); |
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1165 |
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1166 public: |
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1167 // Accessors |
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1168 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1169 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1170 |
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1171 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1172 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
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1173 |
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1174 // Testers |
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1175 static bool is_subclass(Klass* klass) { |
6983 | 1176 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
1135
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1177 } |
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1178 static bool is_instance(oop obj) { |
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1179 return obj != NULL && is_subclass(obj->klass()); |
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1180 } |
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1181 |
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1182 // Accessors for code generation: |
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1183 static int target_offset_in_bytes() { return _target_offset; } |
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1184 }; |
710 | 1185 |
1186 | |
0 | 1187 // Interface to java.security.AccessControlContext objects |
1188 | |
1189 class java_security_AccessControlContext: AllStatic { | |
1190 private: | |
1191 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1192 // so we compute the offsets at startup rather than hard-wiring them. | |
1193 static int _context_offset; | |
1194 static int _privilegedContext_offset; | |
1195 static int _isPrivileged_offset; | |
11010 | 1196 static int _isAuthorized_offset; |
0 | 1197 |
1198 static void compute_offsets(); | |
1199 public: | |
1200 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1201 | |
11010 | 1202 static bool is_authorized(Handle context); |
1203 | |
0 | 1204 // Debugging/initialization |
1205 friend class JavaClasses; | |
1206 }; | |
1207 | |
1208 | |
1209 // Interface to java.lang.ClassLoader objects | |
1210 | |
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1211 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1212 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) |
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1213 |
0 | 1214 class java_lang_ClassLoader : AllStatic { |
1215 private: | |
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1216 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1217 enum { |
1218 hc_parent_offset = 0 | |
1219 }; | |
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1220 static int _loader_data_offset; |
3938 | 1221 static bool offsets_computed; |
0 | 1222 static int parent_offset; |
3938 | 1223 static int parallelCapable_offset; |
1224 | |
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1225 public: |
3938 | 1226 static void compute_offsets(); |
0 | 1227 |
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1228 static ClassLoaderData** loader_data_addr(oop loader); |
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1229 static ClassLoaderData* loader_data(oop loader); |
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1230 |
0 | 1231 static oop parent(oop loader); |
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1232 static bool isAncestor(oop loader, oop cl); |
0 | 1233 |
3938 | 1234 // Support for parallelCapable field |
1235 static bool parallelCapable(oop the_class_mirror); | |
1236 | |
0 | 1237 static bool is_trusted_loader(oop loader); |
1238 | |
1239 // Fix for 4474172 | |
1240 static oop non_reflection_class_loader(oop loader); | |
1241 | |
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1242 // Testers |
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1243 static bool is_subclass(Klass* klass) { |
6983 | 1244 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1245 } |
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1246 static bool is_instance(oop obj) { |
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1247 return obj != NULL && is_subclass(obj->klass()); |
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1248 } |
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1249 |
0 | 1250 // Debugging |
1251 friend class JavaClasses; | |
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1252 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1253 }; |
1254 | |
1255 | |
1256 // Interface to java.lang.System objects | |
1257 | |
1258 class java_lang_System : AllStatic { | |
1259 private: | |
1260 enum { | |
1261 hc_static_in_offset = 0, | |
1262 hc_static_out_offset = 1, | |
11010 | 1263 hc_static_err_offset = 2, |
1264 hc_static_security_offset = 3 | |
0 | 1265 }; |
1266 | |
1267 static int static_in_offset; | |
1268 static int static_out_offset; | |
1269 static int static_err_offset; | |
11010 | 1270 static int static_security_offset; |
0 | 1271 |
1272 public: | |
1273 static int in_offset_in_bytes(); | |
1274 static int out_offset_in_bytes(); | |
1275 static int err_offset_in_bytes(); | |
1276 | |
11010 | 1277 static bool has_security_manager(); |
1278 | |
0 | 1279 // Debugging |
1280 friend class JavaClasses; | |
1281 }; | |
1282 | |
1283 | |
1284 // Interface to java.lang.StackTraceElement objects | |
1285 | |
1286 class java_lang_StackTraceElement: AllStatic { | |
1287 private: | |
1288 enum { | |
1289 hc_declaringClass_offset = 0, | |
1290 hc_methodName_offset = 1, | |
1291 hc_fileName_offset = 2, | |
1292 hc_lineNumber_offset = 3 | |
1293 }; | |
1294 | |
1295 static int declaringClass_offset; | |
1296 static int methodName_offset; | |
1297 static int fileName_offset; | |
1298 static int lineNumber_offset; | |
1299 | |
1300 public: | |
1301 // Setters | |
1302 static void set_declaringClass(oop element, oop value); | |
1303 static void set_methodName(oop element, oop value); | |
1304 static void set_fileName(oop element, oop value); | |
1305 static void set_lineNumber(oop element, int value); | |
1306 | |
1307 // Create an instance of StackTraceElement | |
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1308 static oop create(Handle mirror, int method, int version, int bci, TRAPS); |
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1309 static oop create(methodHandle method, int bci, TRAPS); |
0 | 1310 |
1311 // Debugging | |
1312 friend class JavaClasses; | |
1313 }; | |
1314 | |
1315 | |
1316 // Interface to java.lang.AssertionStatusDirectives objects | |
1317 | |
1318 class java_lang_AssertionStatusDirectives: AllStatic { | |
1319 private: | |
1320 enum { | |
1321 hc_classes_offset, | |
1322 hc_classEnabled_offset, | |
1323 hc_packages_offset, | |
1324 hc_packageEnabled_offset, | |
1325 hc_deflt_offset | |
1326 }; | |
1327 | |
1328 static int classes_offset; | |
1329 static int classEnabled_offset; | |
1330 static int packages_offset; | |
1331 static int packageEnabled_offset; | |
1332 static int deflt_offset; | |
1333 | |
1334 public: | |
1335 // Setters | |
1336 static void set_classes(oop obj, oop val); | |
1337 static void set_classEnabled(oop obj, oop val); | |
1338 static void set_packages(oop obj, oop val); | |
1339 static void set_packageEnabled(oop obj, oop val); | |
1340 static void set_deflt(oop obj, bool val); | |
1341 // Debugging | |
1342 friend class JavaClasses; | |
1343 }; | |
1344 | |
1345 | |
1346 class java_nio_Buffer: AllStatic { | |
1347 private: | |
1348 static int _limit_offset; | |
1349 | |
1350 public: | |
1351 static int limit_offset(); | |
1352 static void compute_offsets(); | |
1353 }; | |
1354 | |
1355 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1356 private: | |
1357 static int _owner_offset; | |
1358 public: | |
1359 static void initialize(TRAPS); | |
1360 static oop get_owner_threadObj(oop obj); | |
1361 }; | |
1362 | |
3938 | 1363 // Use to declare fields that need to be injected into Java classes |
1364 // for the JVM to use. The name_index and signature_index are | |
1365 // declared in vmSymbols. The may_be_java flag is used to declare | |
1366 // fields that might already exist in Java but should be injected if | |
1367 // they don't. Otherwise the field is unconditionally injected and | |
1368 // the JVM uses the injected one. This is to ensure that name | |
1369 // collisions don't occur. In general may_be_java should be false | |
1370 // unless there's a good reason. | |
1371 | |
1372 class InjectedField { | |
1373 public: | |
1374 const SystemDictionary::WKID klass_id; | |
1375 const vmSymbols::SID name_index; | |
1376 const vmSymbols::SID signature_index; | |
1377 const bool may_be_java; | |
1378 | |
1379 | |
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1380 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1381 Symbol* name() const { return lookup_symbol(name_index); } |
1382 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1383 | |
1384 int compute_offset(); | |
1385 | |
1386 // Find the Symbol for this index | |
1387 static Symbol* lookup_symbol(int symbol_index) { | |
1388 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1389 } | |
1390 }; | |
1391 | |
1392 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1393 klass##_##name##_enum, | |
1394 | |
1395 #define ALL_INJECTED_FIELDS(macro) \ | |
1396 CLASS_INJECTED_FIELDS(macro) \ | |
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1397 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1398 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1399 |
0 | 1400 // Interface to hard-coded offset checking |
1401 | |
1402 class JavaClasses : AllStatic { | |
1403 private: | |
3938 | 1404 |
1405 static InjectedField _injected_fields[]; | |
1406 | |
0 | 1407 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1408 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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1409 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1410 |
0 | 1411 public: |
3938 | 1412 enum InjectedFieldID { |
1413 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1414 MAX_enum | |
1415 }; | |
1416 | |
1417 static int compute_injected_offset(InjectedFieldID id); | |
1418 | |
0 | 1419 static void compute_hard_coded_offsets(); |
1420 static void compute_offsets(); | |
1421 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1422 |
1423 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1424 }; |
1972 | 1425 |
3938 | 1426 #undef DECLARE_INJECTED_FIELD_ENUM |
1427 | |
1972 | 1428 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |