Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/javaClasses.hpp @ 7176:59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
Summary: Make metaspace::contains be lock free and used to see if something is in metaspace, also compare Method* with vtbl pointer.
Reviewed-by: dholmes, sspitsyn, dcubed, jmasa
author | coleenp |
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date | Wed, 28 Nov 2012 17:50:21 -0500 |
parents | 80e866b1d053 |
children | 2cb439954abf 90273fc0a981 |
rev | line source |
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0 | 1 /* |
6057 | 2 * Copyright (c) 1997, 2012, 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); |
0 | 156 static jchar* as_unicode_string(oop java_string, int& length); |
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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 // |
6162 | 169 // For this reason, THIS ALGORITHM MUST MATCH String.toHash(). |
170 template <typename T> static unsigned int to_hash(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 } |
6162 | 178 static unsigned int to_hash(oop java_string); |
179 | |
180 // This is the string hash code used by the StringTable, which may be | |
181 // the same as String.toHash 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, resolved_constructor, intptr_signature, false) \ |
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210 macro(java_lang_Class, array_klass, intptr_signature, false) \ |
3938 | 211 macro(java_lang_Class, oop_size, int_signature, false) \ |
212 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
213 | |
0 | 214 class java_lang_Class : AllStatic { |
3938 | 215 friend class VMStructs; |
216 | |
0 | 217 private: |
218 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
219 | |
3938 | 220 static int _klass_offset; |
221 static int _resolved_constructor_offset; | |
222 static int _array_klass_offset; | |
0 | 223 |
3938 | 224 static int _oop_size_offset; |
225 static int _static_oop_field_count_offset; | |
0 | 226 |
227 static bool offsets_computed; | |
228 static int classRedefinedCount_offset; | |
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229 static GrowableArray<Klass*>* _fixup_mirror_list; |
0 | 230 |
231 public: | |
3938 | 232 static void compute_offsets(); |
233 | |
0 | 234 // Instance creation |
235 static oop create_mirror(KlassHandle k, TRAPS); | |
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236 static void fixup_mirror(KlassHandle k, TRAPS); |
0 | 237 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
238 // Conversion | |
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239 static Klass* as_Klass(oop java_class); |
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240 static void set_klass(oop java_class, Klass* klass); |
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241 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL); |
710 | 242 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
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243 Klass* refk_oop = NULL; |
710 | 244 BasicType result = as_BasicType(java_class, &refk_oop); |
245 (*reference_klass) = KlassHandle(refk_oop); | |
246 return result; | |
247 } | |
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248 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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249 static void print_signature(oop java_class, outputStream *st); |
0 | 250 // Testing |
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251 static bool is_instance(oop obj) { |
1142 | 252 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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253 } |
0 | 254 static bool is_primitive(oop java_class); |
255 static BasicType primitive_type(oop java_class); | |
256 static oop primitive_mirror(BasicType t); | |
257 // JVM_NewInstance support | |
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258 static Method* resolved_constructor(oop java_class); |
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259 static void set_resolved_constructor(oop java_class, Method* constructor); |
0 | 260 // JVM_NewArray support |
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261 static Klass* array_klass(oop java_class); |
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262 static void set_array_klass(oop java_class, Klass* klass); |
0 | 263 // compiler support for class operations |
3938 | 264 static int klass_offset_in_bytes() { return _klass_offset; } |
265 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
266 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
0 | 267 // Support for classRedefinedCount field |
268 static int classRedefinedCount(oop the_class_mirror); | |
269 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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270 |
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271 static int oop_size(oop java_class); |
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272 static void set_oop_size(oop java_class, int size); |
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273 static int static_oop_field_count(oop java_class); |
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274 static void set_static_oop_field_count(oop java_class, int size); |
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275 |
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276 static GrowableArray<Klass*>* fixup_mirror_list() { |
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277 return _fixup_mirror_list; |
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278 } |
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279 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) { |
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280 _fixup_mirror_list = v; |
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281 } |
0 | 282 // Debugging |
283 friend class JavaClasses; | |
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284 friend class InstanceKlass; // verification code accesses offsets |
0 | 285 friend class ClassFileParser; // access to number_of_fake_fields |
286 }; | |
287 | |
288 // Interface to java.lang.Thread objects | |
289 | |
290 class java_lang_Thread : AllStatic { | |
291 private: | |
292 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
293 // so we compute the offsets at startup rather than hard-wiring them. | |
294 static int _name_offset; | |
295 static int _group_offset; | |
296 static int _contextClassLoader_offset; | |
297 static int _inheritedAccessControlContext_offset; | |
298 static int _priority_offset; | |
299 static int _eetop_offset; | |
300 static int _daemon_offset; | |
301 static int _stillborn_offset; | |
302 static int _stackSize_offset; | |
303 static int _tid_offset; | |
304 static int _thread_status_offset; | |
305 static int _park_blocker_offset; | |
306 static int _park_event_offset ; | |
307 | |
308 static void compute_offsets(); | |
309 | |
310 public: | |
311 // Instance creation | |
312 static oop create(); | |
313 // Returns the JavaThread associated with the thread obj | |
314 static JavaThread* thread(oop java_thread); | |
315 // Set JavaThread for instance | |
316 static void set_thread(oop java_thread, JavaThread* thread); | |
317 // Name | |
318 static typeArrayOop name(oop java_thread); | |
319 static void set_name(oop java_thread, typeArrayOop name); | |
320 // Priority | |
321 static ThreadPriority priority(oop java_thread); | |
322 static void set_priority(oop java_thread, ThreadPriority priority); | |
323 // Thread group | |
324 static oop threadGroup(oop java_thread); | |
325 // Stillborn | |
326 static bool is_stillborn(oop java_thread); | |
327 static void set_stillborn(oop java_thread); | |
328 // Alive (NOTE: this is not really a field, but provides the correct | |
329 // definition without doing a Java call) | |
330 static bool is_alive(oop java_thread); | |
331 // Daemon | |
332 static bool is_daemon(oop java_thread); | |
333 static void set_daemon(oop java_thread); | |
334 // Context ClassLoader | |
335 static oop context_class_loader(oop java_thread); | |
336 // Control context | |
337 static oop inherited_access_control_context(oop java_thread); | |
338 // Stack size hint | |
339 static jlong stackSize(oop java_thread); | |
340 // Thread ID | |
341 static jlong thread_id(oop java_thread); | |
342 | |
343 // Blocker object responsible for thread parking | |
344 static oop park_blocker(oop java_thread); | |
345 | |
346 // Pointer to type-stable park handler, encoded as jlong. | |
347 // Should be set when apparently null | |
348 // For details, see unsafe.cpp Unsafe_Unpark | |
349 static jlong park_event(oop java_thread); | |
350 static bool set_park_event(oop java_thread, jlong ptr); | |
351 | |
352 // Java Thread Status for JVMTI and M&M use. | |
353 // This thread status info is saved in threadStatus field of | |
354 // java.lang.Thread java class. | |
355 enum ThreadStatus { | |
356 NEW = 0, | |
357 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
358 JVMTI_THREAD_STATE_RUNNABLE, | |
359 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
360 JVMTI_THREAD_STATE_WAITING + | |
361 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
362 JVMTI_THREAD_STATE_SLEEPING, | |
363 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
364 JVMTI_THREAD_STATE_WAITING + | |
365 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
366 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
367 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
368 JVMTI_THREAD_STATE_WAITING + | |
369 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
370 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
371 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
372 JVMTI_THREAD_STATE_WAITING + | |
373 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
374 JVMTI_THREAD_STATE_PARKED, | |
375 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
376 JVMTI_THREAD_STATE_WAITING + | |
377 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
378 JVMTI_THREAD_STATE_PARKED, | |
379 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
380 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
381 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
382 }; | |
383 // Write thread status info to threadStatus field of java.lang.Thread. | |
384 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
385 // Read thread status info from threadStatus field of java.lang.Thread. | |
386 static ThreadStatus get_thread_status(oop java_thread_oop); | |
387 | |
388 static const char* thread_status_name(oop java_thread_oop); | |
389 | |
390 // Debugging | |
391 friend class JavaClasses; | |
392 }; | |
393 | |
394 // Interface to java.lang.ThreadGroup objects | |
395 | |
396 class java_lang_ThreadGroup : AllStatic { | |
397 private: | |
398 static int _parent_offset; | |
399 static int _name_offset; | |
400 static int _threads_offset; | |
401 static int _groups_offset; | |
402 static int _maxPriority_offset; | |
403 static int _destroyed_offset; | |
404 static int _daemon_offset; | |
405 static int _vmAllowSuspension_offset; | |
406 static int _nthreads_offset; | |
407 static int _ngroups_offset; | |
408 | |
409 static void compute_offsets(); | |
410 | |
411 public: | |
412 // parent ThreadGroup | |
413 static oop parent(oop java_thread_group); | |
414 // name | |
415 static typeArrayOop name(oop java_thread_group); | |
416 // ("name as oop" accessor is not necessary) | |
417 // Number of threads in group | |
418 static int nthreads(oop java_thread_group); | |
419 // threads | |
420 static objArrayOop threads(oop java_thread_group); | |
421 // Number of threads in group | |
422 static int ngroups(oop java_thread_group); | |
423 // groups | |
424 static objArrayOop groups(oop java_thread_group); | |
425 // maxPriority in group | |
426 static ThreadPriority maxPriority(oop java_thread_group); | |
427 // Destroyed | |
428 static bool is_destroyed(oop java_thread_group); | |
429 // Daemon | |
430 static bool is_daemon(oop java_thread_group); | |
431 // vmAllowSuspension | |
432 static bool is_vmAllowSuspension(oop java_thread_group); | |
433 // Debugging | |
434 friend class JavaClasses; | |
435 }; | |
436 | |
437 | |
438 | |
439 // Interface to java.lang.Throwable objects | |
440 | |
441 class java_lang_Throwable: AllStatic { | |
442 friend class BacktraceBuilder; | |
443 | |
444 private: | |
445 // Offsets | |
446 enum { | |
447 hc_backtrace_offset = 0, | |
448 hc_detailMessage_offset = 1, | |
449 hc_cause_offset = 2, // New since 1.4 | |
450 hc_stackTrace_offset = 3 // New since 1.4 | |
451 }; | |
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452 enum { |
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453 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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454 }; |
0 | 455 // Trace constants |
456 enum { | |
457 trace_methods_offset = 0, | |
458 trace_bcis_offset = 1, | |
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459 trace_mirrors_offset = 2, |
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460 trace_next_offset = 3, |
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461 trace_size = 4, |
0 | 462 trace_chunk_size = 32 |
463 }; | |
464 | |
465 static int backtrace_offset; | |
466 static int detailMessage_offset; | |
467 static int cause_offset; | |
468 static int stackTrace_offset; | |
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469 static int static_unassigned_stacktrace_offset; |
0 | 470 |
471 // Printing | |
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472 static char* print_stack_element_to_buffer(Method* method, int bci); |
0 | 473 static void print_to_stream(Handle stream, const char* str); |
474 // StackTrace (programmatic access, new since 1.4) | |
475 static void clear_stacktrace(oop throwable); | |
476 // No stack trace available | |
477 static const char* no_stack_trace_message(); | |
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478 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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479 static void set_stacktrace(oop throwable, oop st_element_array); |
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480 static oop unassigned_stacktrace(); |
0 | 481 |
482 public: | |
483 // Backtrace | |
484 static oop backtrace(oop throwable); | |
485 static void set_backtrace(oop throwable, oop value); | |
486 // Needed by JVMTI to filter out this internal field. | |
487 static int get_backtrace_offset() { return backtrace_offset;} | |
488 static int get_detailMessage_offset() { return detailMessage_offset;} | |
489 // Message | |
490 static oop message(oop throwable); | |
491 static oop message(Handle throwable); | |
492 static void set_message(oop throwable, oop value); | |
493 // Print stack trace stored in exception by call-back to Java | |
494 // Note: this is no longer used in Merlin, but we still suppport | |
495 // it for compatibility. | |
496 static void print_stack_trace(oop throwable, oop print_stream); | |
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497 static void print_stack_element(Handle stream, Method* method, int bci); |
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498 static void print_stack_element(outputStream *st, Method* method, int bci); |
0 | 499 static void print_stack_usage(Handle stream); |
500 | |
501 // Allocate space for backtrace (created but stack trace not filled in) | |
502 static void allocate_backtrace(Handle throwable, TRAPS); | |
503 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
504 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
505 // Fill in current stack trace, can cause GC | |
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506 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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507 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
0 | 508 // Programmatic access to stack trace |
509 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
510 static int get_stack_trace_depth(oop throwable, TRAPS); | |
511 // Printing | |
512 static void print(oop throwable, outputStream* st); | |
513 static void print(Handle throwable, outputStream* st); | |
514 static void print_stack_trace(oop throwable, outputStream* st); | |
515 // Debugging | |
516 friend class JavaClasses; | |
517 }; | |
518 | |
519 | |
520 // Interface to java.lang.reflect.AccessibleObject objects | |
521 | |
522 class java_lang_reflect_AccessibleObject: AllStatic { | |
523 private: | |
524 // Note that to reduce dependencies on the JDK we compute these | |
525 // offsets at run-time. | |
526 static int override_offset; | |
527 | |
528 static void compute_offsets(); | |
529 | |
530 public: | |
531 // Accessors | |
532 static jboolean override(oop reflect); | |
533 static void set_override(oop reflect, jboolean value); | |
534 | |
535 // Debugging | |
536 friend class JavaClasses; | |
537 }; | |
538 | |
539 | |
540 // Interface to java.lang.reflect.Method objects | |
541 | |
542 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
543 private: | |
544 // Note that to reduce dependencies on the JDK we compute these | |
545 // offsets at run-time. | |
546 static int clazz_offset; | |
547 static int name_offset; | |
548 static int returnType_offset; | |
549 static int parameterTypes_offset; | |
550 static int exceptionTypes_offset; | |
551 static int slot_offset; | |
552 static int modifiers_offset; | |
553 static int signature_offset; | |
554 static int annotations_offset; | |
555 static int parameter_annotations_offset; | |
556 static int annotation_default_offset; | |
557 | |
558 static void compute_offsets(); | |
559 | |
560 public: | |
561 // Allocation | |
562 static Handle create(TRAPS); | |
563 | |
564 // Accessors | |
565 static oop clazz(oop reflect); | |
566 static void set_clazz(oop reflect, oop value); | |
567 | |
568 static oop name(oop method); | |
569 static void set_name(oop method, oop value); | |
570 | |
571 static oop return_type(oop method); | |
572 static void set_return_type(oop method, oop value); | |
573 | |
574 static oop parameter_types(oop method); | |
575 static void set_parameter_types(oop method, oop value); | |
576 | |
577 static oop exception_types(oop method); | |
578 static void set_exception_types(oop method, oop value); | |
579 | |
580 static int slot(oop reflect); | |
581 static void set_slot(oop reflect, int value); | |
582 | |
583 static int modifiers(oop method); | |
584 static void set_modifiers(oop method, int value); | |
585 | |
586 static bool has_signature_field(); | |
587 static oop signature(oop method); | |
588 static void set_signature(oop method, oop value); | |
589 | |
590 static bool has_annotations_field(); | |
591 static oop annotations(oop method); | |
592 static void set_annotations(oop method, oop value); | |
593 | |
594 static bool has_parameter_annotations_field(); | |
595 static oop parameter_annotations(oop method); | |
596 static void set_parameter_annotations(oop method, oop value); | |
597 | |
598 static bool has_annotation_default_field(); | |
599 static oop annotation_default(oop method); | |
600 static void set_annotation_default(oop method, oop value); | |
601 | |
602 // Debugging | |
603 friend class JavaClasses; | |
604 }; | |
605 | |
606 | |
607 // Interface to java.lang.reflect.Constructor objects | |
608 | |
609 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
610 private: | |
611 // Note that to reduce dependencies on the JDK we compute these | |
612 // offsets at run-time. | |
613 static int clazz_offset; | |
614 static int parameterTypes_offset; | |
615 static int exceptionTypes_offset; | |
616 static int slot_offset; | |
617 static int modifiers_offset; | |
618 static int signature_offset; | |
619 static int annotations_offset; | |
620 static int parameter_annotations_offset; | |
621 | |
622 static void compute_offsets(); | |
623 | |
624 public: | |
625 // Allocation | |
626 static Handle create(TRAPS); | |
627 | |
628 // Accessors | |
629 static oop clazz(oop reflect); | |
630 static void set_clazz(oop reflect, oop value); | |
631 | |
632 static oop parameter_types(oop constructor); | |
633 static void set_parameter_types(oop constructor, oop value); | |
634 | |
635 static oop exception_types(oop constructor); | |
636 static void set_exception_types(oop constructor, oop value); | |
637 | |
638 static int slot(oop reflect); | |
639 static void set_slot(oop reflect, int value); | |
640 | |
641 static int modifiers(oop constructor); | |
642 static void set_modifiers(oop constructor, int value); | |
643 | |
644 static bool has_signature_field(); | |
645 static oop signature(oop constructor); | |
646 static void set_signature(oop constructor, oop value); | |
647 | |
648 static bool has_annotations_field(); | |
649 static oop annotations(oop constructor); | |
650 static void set_annotations(oop constructor, oop value); | |
651 | |
652 static bool has_parameter_annotations_field(); | |
653 static oop parameter_annotations(oop method); | |
654 static void set_parameter_annotations(oop method, oop value); | |
655 | |
656 // Debugging | |
657 friend class JavaClasses; | |
658 }; | |
659 | |
660 | |
661 // Interface to java.lang.reflect.Field objects | |
662 | |
663 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
664 private: | |
665 // Note that to reduce dependencies on the JDK we compute these | |
666 // offsets at run-time. | |
667 static int clazz_offset; | |
668 static int name_offset; | |
669 static int type_offset; | |
670 static int slot_offset; | |
671 static int modifiers_offset; | |
672 static int signature_offset; | |
673 static int annotations_offset; | |
674 | |
675 static void compute_offsets(); | |
676 | |
677 public: | |
678 // Allocation | |
679 static Handle create(TRAPS); | |
680 | |
681 // Accessors | |
682 static oop clazz(oop reflect); | |
683 static void set_clazz(oop reflect, oop value); | |
684 | |
685 static oop name(oop field); | |
686 static void set_name(oop field, oop value); | |
687 | |
688 static oop type(oop field); | |
689 static void set_type(oop field, oop value); | |
690 | |
691 static int slot(oop reflect); | |
692 static void set_slot(oop reflect, int value); | |
693 | |
694 static int modifiers(oop field); | |
695 static void set_modifiers(oop field, int value); | |
696 | |
697 static bool has_signature_field(); | |
698 static oop signature(oop constructor); | |
699 static void set_signature(oop constructor, oop value); | |
700 | |
701 static bool has_annotations_field(); | |
702 static oop annotations(oop constructor); | |
703 static void set_annotations(oop constructor, oop value); | |
704 | |
705 static bool has_parameter_annotations_field(); | |
706 static oop parameter_annotations(oop method); | |
707 static void set_parameter_annotations(oop method, oop value); | |
708 | |
709 static bool has_annotation_default_field(); | |
710 static oop annotation_default(oop method); | |
711 static void set_annotation_default(oop method, oop value); | |
712 | |
713 // Debugging | |
714 friend class JavaClasses; | |
715 }; | |
716 | |
717 // Interface to sun.reflect.ConstantPool objects | |
718 class sun_reflect_ConstantPool { | |
719 private: | |
720 // Note that to reduce dependencies on the JDK we compute these | |
721 // offsets at run-time. | |
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722 static int _oop_offset; |
0 | 723 |
724 static void compute_offsets(); | |
725 | |
726 public: | |
727 // Allocation | |
728 static Handle create(TRAPS); | |
729 | |
730 // Accessors | |
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731 static void set_cp(oop reflect, ConstantPool* value); |
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732 static int oop_offset() { |
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733 return _oop_offset; |
0 | 734 } |
735 | |
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736 static ConstantPool* get_cp(oop reflect); |
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737 |
0 | 738 // Debugging |
739 friend class JavaClasses; | |
740 }; | |
741 | |
742 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
743 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
744 private: | |
745 static int _base_offset; | |
746 static void compute_offsets(); | |
747 | |
748 public: | |
749 static int base_offset() { | |
750 return _base_offset; | |
751 } | |
752 | |
753 // Debugging | |
754 friend class JavaClasses; | |
755 }; | |
756 | |
757 // Interface to java.lang primitive type boxing objects: | |
758 // - java.lang.Boolean | |
759 // - java.lang.Character | |
760 // - java.lang.Float | |
761 // - java.lang.Double | |
762 // - java.lang.Byte | |
763 // - java.lang.Short | |
764 // - java.lang.Integer | |
765 // - java.lang.Long | |
766 | |
767 // This could be separated out into 8 individual classes. | |
768 | |
769 class java_lang_boxing_object: AllStatic { | |
770 private: | |
771 enum { | |
772 hc_value_offset = 0 | |
773 }; | |
774 static int value_offset; | |
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775 static int long_value_offset; |
0 | 776 |
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777 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 778 public: |
779 // Allocation. Returns a boxed value, or NULL for invalid type. | |
780 static oop create(BasicType type, jvalue* value, TRAPS); | |
781 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
782 static BasicType get_value(oop box, jvalue* value); | |
783 static BasicType set_value(oop box, jvalue* value); | |
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784 static BasicType basic_type(oop box); |
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785 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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786 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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787 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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788 static void print(BasicType type, jvalue* value, outputStream* st); |
0 | 789 |
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790 static int value_offset_in_bytes(BasicType type) { |
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791 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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792 value_offset; |
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793 } |
0 | 794 |
795 // Debugging | |
796 friend class JavaClasses; | |
797 }; | |
798 | |
799 | |
800 | |
801 // Interface to java.lang.ref.Reference objects | |
802 | |
803 class java_lang_ref_Reference: AllStatic { | |
804 public: | |
805 enum { | |
806 hc_referent_offset = 0, | |
807 hc_queue_offset = 1, | |
808 hc_next_offset = 2, | |
809 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
810 }; | |
811 enum { | |
812 hc_static_lock_offset = 0, | |
813 hc_static_pending_offset = 1 | |
814 }; | |
815 | |
816 static int referent_offset; | |
817 static int queue_offset; | |
818 static int next_offset; | |
819 static int discovered_offset; | |
820 static int static_lock_offset; | |
821 static int static_pending_offset; | |
822 static int number_of_fake_oop_fields; | |
823 | |
824 // Accessors | |
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825 static oop referent(oop ref) { |
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826 return ref->obj_field(referent_offset); |
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827 } |
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828 static void set_referent(oop ref, oop value) { |
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829 ref->obj_field_put(referent_offset, value); |
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830 } |
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831 static void set_referent_raw(oop ref, oop value) { |
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832 ref->obj_field_put_raw(referent_offset, value); |
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833 } |
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834 static HeapWord* referent_addr(oop ref) { |
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835 return ref->obj_field_addr<HeapWord>(referent_offset); |
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836 } |
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837 static oop next(oop ref) { |
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838 return ref->obj_field(next_offset); |
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839 } |
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840 static void set_next(oop ref, oop value) { |
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841 ref->obj_field_put(next_offset, value); |
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842 } |
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843 static void set_next_raw(oop ref, oop value) { |
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844 ref->obj_field_put_raw(next_offset, value); |
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845 } |
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846 static HeapWord* next_addr(oop ref) { |
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847 return ref->obj_field_addr<HeapWord>(next_offset); |
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848 } |
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849 static oop discovered(oop ref) { |
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850 return ref->obj_field(discovered_offset); |
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851 } |
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852 static void set_discovered(oop ref, oop value) { |
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853 ref->obj_field_put(discovered_offset, value); |
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854 } |
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855 static void set_discovered_raw(oop ref, oop value) { |
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856 ref->obj_field_put_raw(discovered_offset, value); |
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857 } |
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858 static HeapWord* discovered_addr(oop ref) { |
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859 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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860 } |
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861 // Accessors for statics |
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862 static oop pending_list_lock(); |
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863 static oop pending_list(); |
0 | 864 |
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865 static HeapWord* pending_list_lock_addr(); |
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866 static HeapWord* pending_list_addr(); |
0 | 867 }; |
868 | |
869 | |
870 // Interface to java.lang.ref.SoftReference objects | |
871 | |
872 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
873 public: | |
874 enum { | |
875 // The timestamp is a long field and may need to be adjusted for alignment. | |
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876 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 877 }; |
878 enum { | |
879 hc_static_clock_offset = 0 | |
880 }; | |
881 | |
882 static int timestamp_offset; | |
883 static int static_clock_offset; | |
884 | |
885 // Accessors | |
886 static jlong timestamp(oop ref); | |
887 | |
888 // Accessors for statics | |
889 static jlong clock(); | |
890 static void set_clock(jlong value); | |
891 }; | |
892 | |
893 | |
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894 // Interface to java.lang.invoke.MethodHandle objects |
710 | 895 |
896 class MethodHandleEntry; | |
897 | |
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898 class java_lang_invoke_MethodHandle: AllStatic { |
710 | 899 friend class JavaClasses; |
900 | |
901 private: | |
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902 static int _type_offset; // the MethodType of this MH |
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903 static int _form_offset; // the LambdaForm of this MH |
710 | 904 |
905 static void compute_offsets(); | |
906 | |
907 public: | |
908 // Accessors | |
909 static oop type(oop mh); | |
910 static void set_type(oop mh, oop mtype); | |
911 | |
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912 static oop form(oop mh); |
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913 static void set_form(oop mh, oop lform); |
710 | 914 |
915 // Testers | |
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916 static bool is_subclass(Klass* klass) { |
6983 | 917 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass()); |
710 | 918 } |
919 static bool is_instance(oop obj) { | |
920 return obj != NULL && is_subclass(obj->klass()); | |
921 } | |
922 | |
923 // Accessors for code generation: | |
924 static int type_offset_in_bytes() { return _type_offset; } | |
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925 static int form_offset_in_bytes() { return _form_offset; } |
710 | 926 }; |
927 | |
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928 // Interface to java.lang.invoke.LambdaForm objects |
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929 // (These are a private interface for managing adapter code generation.) |
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931 class java_lang_invoke_LambdaForm: AllStatic { |
710 | 932 friend class JavaClasses; |
933 | |
934 private: | |
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935 static int _vmentry_offset; // type is MemberName |
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936 |
710 | 937 static void compute_offsets(); |
938 | |
939 public: | |
940 // Accessors | |
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941 static oop vmentry(oop lform); |
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942 static void set_vmentry(oop lform, oop invoker); |
710 | 943 |
944 // Testers | |
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945 static bool is_subclass(Klass* klass) { |
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946 return SystemDictionary::LambdaForm_klass() != NULL && |
6983 | 947 klass->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
710 | 948 } |
949 static bool is_instance(oop obj) { | |
950 return obj != NULL && is_subclass(obj->klass()); | |
951 } | |
952 | |
953 // Accessors for code generation: | |
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954 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
710 | 955 }; |
956 | |
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957 |
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958 // Interface to java.lang.invoke.MemberName objects |
710 | 959 // (These are a private interface for Java code to query the class hierarchy.) |
960 | |
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961 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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962 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \ |
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963 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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964 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false) |
3938 | 965 |
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966 class java_lang_invoke_MemberName: AllStatic { |
710 | 967 friend class JavaClasses; |
968 | |
969 private: | |
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970 // From java.lang.invoke.MemberName: |
710 | 971 // private Class<?> clazz; // class in which the method is defined |
972 // private String name; // may be null if not yet materialized | |
973 // private Object type; // may be null if not yet materialized | |
974 // private int flags; // modifier bits; see reflect.Modifier | |
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975 // private intptr vmtarget; // VM-specific target value |
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976 // private intptr_t vmindex; // member index within class or interface |
710 | 977 static int _clazz_offset; |
978 static int _name_offset; | |
979 static int _type_offset; | |
980 static int _flags_offset; | |
981 static int _vmtarget_offset; | |
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982 static int _vmloader_offset; |
710 | 983 static int _vmindex_offset; |
984 | |
985 static void compute_offsets(); | |
986 | |
987 public: | |
988 // Accessors | |
989 static oop clazz(oop mname); | |
990 static void set_clazz(oop mname, oop clazz); | |
991 | |
992 static oop type(oop mname); | |
993 static void set_type(oop mname, oop type); | |
994 | |
995 static oop name(oop mname); | |
996 static void set_name(oop mname, oop name); | |
997 | |
998 static int flags(oop mname); | |
999 static void set_flags(oop mname, int flags); | |
1000 | |
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1001 static Metadata* vmtarget(oop mname); |
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1002 static void set_vmtarget(oop mname, Metadata* target); |
710 | 1003 |
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1004 static intptr_t vmindex(oop mname); |
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1005 static void set_vmindex(oop mname, intptr_t index); |
710 | 1006 |
1007 // Testers | |
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1008 static bool is_subclass(Klass* klass) { |
6983 | 1009 return klass->is_subclass_of(SystemDictionary::MemberName_klass()); |
710 | 1010 } |
1011 static bool is_instance(oop obj) { | |
1012 return obj != NULL && is_subclass(obj->klass()); | |
1013 } | |
1014 | |
1015 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
1016 enum { | |
1017 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
1018 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
1019 MN_IS_FIELD = 0x00040000, // field | |
1020 MN_IS_TYPE = 0x00080000, // nested type | |
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1021 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1022 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1023 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1024 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1025 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
710 | 1026 }; |
1027 | |
1028 // Accessors for code generation: | |
1029 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
1030 static int type_offset_in_bytes() { return _type_offset; } | |
1031 static int name_offset_in_bytes() { return _name_offset; } | |
1032 static int flags_offset_in_bytes() { return _flags_offset; } | |
1033 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
1034 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
1035 }; | |
1036 | |
1037 | |
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1038 // Interface to java.lang.invoke.MethodType objects |
710 | 1039 |
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1040 class java_lang_invoke_MethodType: AllStatic { |
710 | 1041 friend class JavaClasses; |
1042 | |
1043 private: | |
1044 static int _rtype_offset; | |
1045 static int _ptypes_offset; | |
1046 | |
1047 static void compute_offsets(); | |
1048 | |
1049 public: | |
1050 // Accessors | |
1051 static oop rtype(oop mt); | |
1052 static objArrayOop ptypes(oop mt); | |
1053 | |
1054 static oop ptype(oop mt, int index); | |
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1055 static int ptype_count(oop mt); |
710 | 1056 |
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1057 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1058 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1059 |
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1060 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
710 | 1061 static void print_signature(oop mt, outputStream* st); |
1062 | |
1063 static bool is_instance(oop obj) { | |
1064 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
1065 } | |
1066 | |
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1067 static bool equals(oop mt1, oop mt2); |
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1068 |
710 | 1069 // Accessors for code generation: |
1070 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
1071 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
1072 }; | |
1073 | |
1074 | |
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1075 // Interface to java.lang.invoke.CallSite objects |
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1076 |
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1077 class java_lang_invoke_CallSite: AllStatic { |
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1078 friend class JavaClasses; |
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1079 |
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1080 private: |
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1081 static int _target_offset; |
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1082 |
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1083 static void compute_offsets(); |
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1084 |
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1085 public: |
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1086 // Accessors |
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1087 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1088 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1089 |
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1090 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1091 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
726
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1092 |
1135
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1093 // Testers |
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1094 static bool is_subclass(Klass* klass) { |
6983 | 1095 return klass->is_subclass_of(SystemDictionary::CallSite_klass()); |
1135
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1096 } |
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1097 static bool is_instance(oop obj) { |
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1098 return obj != NULL && is_subclass(obj->klass()); |
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1099 } |
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1100 |
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1101 // Accessors for code generation: |
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1102 static int target_offset_in_bytes() { return _target_offset; } |
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1103 }; |
710 | 1104 |
1105 | |
0 | 1106 // Interface to java.security.AccessControlContext objects |
1107 | |
1108 class java_security_AccessControlContext: AllStatic { | |
1109 private: | |
1110 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
1111 // so we compute the offsets at startup rather than hard-wiring them. | |
1112 static int _context_offset; | |
1113 static int _privilegedContext_offset; | |
1114 static int _isPrivileged_offset; | |
1115 | |
1116 static void compute_offsets(); | |
1117 public: | |
1118 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
1119 | |
1120 // Debugging/initialization | |
1121 friend class JavaClasses; | |
1122 }; | |
1123 | |
1124 | |
1125 // Interface to java.lang.ClassLoader objects | |
1126 | |
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1127 #define CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1128 macro(java_lang_ClassLoader, loader_data, intptr_signature, false) \ |
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1129 macro(java_lang_ClassLoader, dependencies, object_signature, false) |
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1130 |
0 | 1131 class java_lang_ClassLoader : AllStatic { |
1132 private: | |
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1133 // The fake offsets are added by the class loader when java.lang.Class is loaded |
0 | 1134 enum { |
1135 hc_parent_offset = 0 | |
1136 }; | |
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1137 static int _loader_data_offset; |
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1138 static int _dependencies_offset; |
3938 | 1139 static bool offsets_computed; |
0 | 1140 static int parent_offset; |
3938 | 1141 static int parallelCapable_offset; |
1142 | |
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1143 public: |
3938 | 1144 static void compute_offsets(); |
0 | 1145 |
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1146 static ClassLoaderData** loader_data_addr(oop loader); |
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1147 static ClassLoaderData* loader_data(oop loader); |
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1148 |
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1149 static oop dependencies(oop loader); |
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1150 static HeapWord* dependencies_addr(oop loader); |
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1151 |
0 | 1152 static oop parent(oop loader); |
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1153 static bool isAncestor(oop loader, oop cl); |
0 | 1154 |
3938 | 1155 // Support for parallelCapable field |
1156 static bool parallelCapable(oop the_class_mirror); | |
1157 | |
0 | 1158 static bool is_trusted_loader(oop loader); |
1159 | |
1160 // Fix for 4474172 | |
1161 static oop non_reflection_class_loader(oop loader); | |
1162 | |
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1163 // Testers |
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1164 static bool is_subclass(Klass* klass) { |
6983 | 1165 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1166 } |
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1167 static bool is_instance(oop obj) { |
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1168 return obj != NULL && is_subclass(obj->klass()); |
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1169 } |
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1170 |
0 | 1171 // Debugging |
1172 friend class JavaClasses; | |
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1173 friend class ClassFileParser; // access to number_of_fake_fields |
0 | 1174 }; |
1175 | |
1176 | |
1177 // Interface to java.lang.System objects | |
1178 | |
1179 class java_lang_System : AllStatic { | |
1180 private: | |
1181 enum { | |
1182 hc_static_in_offset = 0, | |
1183 hc_static_out_offset = 1, | |
1184 hc_static_err_offset = 2 | |
1185 }; | |
1186 | |
1187 static int static_in_offset; | |
1188 static int static_out_offset; | |
1189 static int static_err_offset; | |
1190 | |
1191 public: | |
1192 static int in_offset_in_bytes(); | |
1193 static int out_offset_in_bytes(); | |
1194 static int err_offset_in_bytes(); | |
1195 | |
1196 // Debugging | |
1197 friend class JavaClasses; | |
1198 }; | |
1199 | |
1200 | |
1201 // Interface to java.lang.StackTraceElement objects | |
1202 | |
1203 class java_lang_StackTraceElement: AllStatic { | |
1204 private: | |
1205 enum { | |
1206 hc_declaringClass_offset = 0, | |
1207 hc_methodName_offset = 1, | |
1208 hc_fileName_offset = 2, | |
1209 hc_lineNumber_offset = 3 | |
1210 }; | |
1211 | |
1212 static int declaringClass_offset; | |
1213 static int methodName_offset; | |
1214 static int fileName_offset; | |
1215 static int lineNumber_offset; | |
1216 | |
1217 public: | |
1218 // Setters | |
1219 static void set_declaringClass(oop element, oop value); | |
1220 static void set_methodName(oop element, oop value); | |
1221 static void set_fileName(oop element, oop value); | |
1222 static void set_lineNumber(oop element, int value); | |
1223 | |
1224 // Create an instance of StackTraceElement | |
1225 static oop create(methodHandle m, int bci, TRAPS); | |
1226 | |
1227 // Debugging | |
1228 friend class JavaClasses; | |
1229 }; | |
1230 | |
1231 | |
1232 // Interface to java.lang.AssertionStatusDirectives objects | |
1233 | |
1234 class java_lang_AssertionStatusDirectives: AllStatic { | |
1235 private: | |
1236 enum { | |
1237 hc_classes_offset, | |
1238 hc_classEnabled_offset, | |
1239 hc_packages_offset, | |
1240 hc_packageEnabled_offset, | |
1241 hc_deflt_offset | |
1242 }; | |
1243 | |
1244 static int classes_offset; | |
1245 static int classEnabled_offset; | |
1246 static int packages_offset; | |
1247 static int packageEnabled_offset; | |
1248 static int deflt_offset; | |
1249 | |
1250 public: | |
1251 // Setters | |
1252 static void set_classes(oop obj, oop val); | |
1253 static void set_classEnabled(oop obj, oop val); | |
1254 static void set_packages(oop obj, oop val); | |
1255 static void set_packageEnabled(oop obj, oop val); | |
1256 static void set_deflt(oop obj, bool val); | |
1257 // Debugging | |
1258 friend class JavaClasses; | |
1259 }; | |
1260 | |
1261 | |
1262 class java_nio_Buffer: AllStatic { | |
1263 private: | |
1264 static int _limit_offset; | |
1265 | |
1266 public: | |
1267 static int limit_offset(); | |
1268 static void compute_offsets(); | |
1269 }; | |
1270 | |
1271 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
1272 private: | |
1273 static int _owner_offset; | |
1274 public: | |
1275 static void initialize(TRAPS); | |
1276 static oop get_owner_threadObj(oop obj); | |
1277 }; | |
1278 | |
3938 | 1279 // Use to declare fields that need to be injected into Java classes |
1280 // for the JVM to use. The name_index and signature_index are | |
1281 // declared in vmSymbols. The may_be_java flag is used to declare | |
1282 // fields that might already exist in Java but should be injected if | |
1283 // they don't. Otherwise the field is unconditionally injected and | |
1284 // the JVM uses the injected one. This is to ensure that name | |
1285 // collisions don't occur. In general may_be_java should be false | |
1286 // unless there's a good reason. | |
1287 | |
1288 class InjectedField { | |
1289 public: | |
1290 const SystemDictionary::WKID klass_id; | |
1291 const vmSymbols::SID name_index; | |
1292 const vmSymbols::SID signature_index; | |
1293 const bool may_be_java; | |
1294 | |
1295 | |
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1296 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); } |
3938 | 1297 Symbol* name() const { return lookup_symbol(name_index); } |
1298 Symbol* signature() const { return lookup_symbol(signature_index); } | |
1299 | |
1300 int compute_offset(); | |
1301 | |
1302 // Find the Symbol for this index | |
1303 static Symbol* lookup_symbol(int symbol_index) { | |
1304 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
1305 } | |
1306 }; | |
1307 | |
1308 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
1309 klass##_##name##_enum, | |
1310 | |
1311 #define ALL_INJECTED_FIELDS(macro) \ | |
1312 CLASS_INJECTED_FIELDS(macro) \ | |
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1313 CLASSLOADER_INJECTED_FIELDS(macro) \ |
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1314 MEMBERNAME_INJECTED_FIELDS(macro) |
3938 | 1315 |
0 | 1316 // Interface to hard-coded offset checking |
1317 | |
1318 class JavaClasses : AllStatic { | |
1319 private: | |
3938 | 1320 |
1321 static InjectedField _injected_fields[]; | |
1322 | |
0 | 1323 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
1324 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
132
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1325 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
3938 | 1326 |
0 | 1327 public: |
3938 | 1328 enum InjectedFieldID { |
1329 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
1330 MAX_enum | |
1331 }; | |
1332 | |
1333 static int compute_injected_offset(InjectedFieldID id); | |
1334 | |
0 | 1335 static void compute_hard_coded_offsets(); |
1336 static void compute_offsets(); | |
1337 static void check_offsets() PRODUCT_RETURN; | |
3938 | 1338 |
1339 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
0 | 1340 }; |
1972 | 1341 |
3938 | 1342 #undef DECLARE_INJECTED_FIELD_ENUM |
1343 | |
1972 | 1344 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |