Mercurial > hg > truffle
comparison src/share/vm/classfile/javaClasses.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 90f5ddc7297b |
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1 /* | |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // Interface for manipulating the basic Java classes. | |
26 // | |
27 // All dependencies on layout of actual Java classes should be kept here. | |
28 // If the layout of any of the classes above changes the offsets must be adjusted. | |
29 // | |
30 // For most classes we hardwire the offsets for performance reasons. In certain | |
31 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
32 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
33 // | |
34 // Note that fields (static and non-static) are arranged with oops before non-oops | |
35 // on a per class basis. The offsets below have to reflect this ordering. | |
36 // | |
37 // When editing the layouts please update the check_offset verification code | |
38 // correspondingly. The names in the enums must be identical to the actual field | |
39 // names in order for the verification code to work. | |
40 | |
41 | |
42 // Interface to java.lang.String objects | |
43 | |
44 class java_lang_String : AllStatic { | |
45 private: | |
46 enum { | |
47 hc_value_offset = 0, | |
48 hc_offset_offset = 1, | |
49 hc_count_offset = 2, | |
50 hc_hash_offset = 3 | |
51 }; | |
52 | |
53 static int value_offset; | |
54 static int offset_offset; | |
55 static int count_offset; | |
56 static int hash_offset; | |
57 | |
58 static Handle basic_create(int length, bool tenured, TRAPS); | |
59 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); | |
60 | |
61 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); } | |
62 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); } | |
63 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); } | |
64 | |
65 public: | |
66 // Instance creation | |
67 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
68 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); | |
69 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
70 static Handle create_from_str(const char* utf8_str, TRAPS); | |
71 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
72 static Handle create_from_symbol(symbolHandle symbol, TRAPS); | |
73 static Handle create_from_platform_dependent_str(const char* str, TRAPS); | |
74 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
75 | |
76 static int value_offset_in_bytes() { return value_offset; } | |
77 static int count_offset_in_bytes() { return count_offset; } | |
78 static int offset_offset_in_bytes() { return offset_offset; } | |
79 static int hash_offset_in_bytes() { return hash_offset; } | |
80 | |
81 // Accessors | |
82 static typeArrayOop value(oop java_string) { | |
83 assert(is_instance(java_string), "must be java_string"); | |
84 return (typeArrayOop) java_string->obj_field(value_offset); | |
85 } | |
86 static int offset(oop java_string) { | |
87 assert(is_instance(java_string), "must be java_string"); | |
88 return java_string->int_field(offset_offset); | |
89 } | |
90 static int length(oop java_string) { | |
91 assert(is_instance(java_string), "must be java_string"); | |
92 return java_string->int_field(count_offset); | |
93 } | |
94 static int utf8_length(oop java_string); | |
95 | |
96 // String converters | |
97 static char* as_utf8_string(oop java_string); | |
98 static char* as_utf8_string(oop java_string, int start, int len); | |
99 static jchar* as_unicode_string(oop java_string, int& length); | |
100 | |
101 static bool equals(oop java_string, jchar* chars, int len); | |
102 | |
103 // Conversion between '.' and '/' formats | |
104 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
105 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
106 | |
107 // Conversion | |
108 static symbolHandle as_symbol(Handle java_string, TRAPS); | |
109 | |
110 // Testers | |
111 static bool is_instance(oop obj) { | |
112 return obj != NULL && obj->klass() == SystemDictionary::string_klass(); | |
113 } | |
114 | |
115 // Debugging | |
116 static void print(Handle java_string, outputStream* st); | |
117 friend class JavaClasses; | |
118 }; | |
119 | |
120 | |
121 // Interface to java.lang.Class objects | |
122 | |
123 class java_lang_Class : AllStatic { | |
124 friend class VMStructs; | |
125 private: | |
126 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
127 | |
128 enum { | |
129 hc_klass_offset = 0, | |
130 hc_array_klass_offset = 1, | |
131 hc_resolved_constructor_offset = 2, | |
132 hc_number_of_fake_oop_fields = 3 | |
133 }; | |
134 | |
135 static int klass_offset; | |
136 static int resolved_constructor_offset; | |
137 static int array_klass_offset; | |
138 static int number_of_fake_oop_fields; | |
139 | |
140 static void compute_offsets(); | |
141 static bool offsets_computed; | |
142 static int classRedefinedCount_offset; | |
143 | |
144 public: | |
145 // Instance creation | |
146 static oop create_mirror(KlassHandle k, TRAPS); | |
147 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); | |
148 // Conversion | |
149 static klassOop as_klassOop(oop java_class); | |
150 // Testing | |
151 static bool is_primitive(oop java_class); | |
152 static BasicType primitive_type(oop java_class); | |
153 static oop primitive_mirror(BasicType t); | |
154 // JVM_NewInstance support | |
155 static methodOop resolved_constructor(oop java_class); | |
156 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
157 // JVM_NewArray support | |
158 static klassOop array_klass(oop java_class); | |
159 static void set_array_klass(oop java_class, klassOop klass); | |
160 // compiler support for class operations | |
161 static int klass_offset_in_bytes() { return klass_offset; } | |
162 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } | |
163 static int array_klass_offset_in_bytes() { return array_klass_offset; } | |
164 // Support for classRedefinedCount field | |
165 static int classRedefinedCount(oop the_class_mirror); | |
166 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
167 // Debugging | |
168 friend class JavaClasses; | |
169 friend class instanceKlass; // verification code accesses offsets | |
170 friend class ClassFileParser; // access to number_of_fake_fields | |
171 }; | |
172 | |
173 // Interface to java.lang.Thread objects | |
174 | |
175 class java_lang_Thread : AllStatic { | |
176 private: | |
177 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
178 // so we compute the offsets at startup rather than hard-wiring them. | |
179 static int _name_offset; | |
180 static int _group_offset; | |
181 static int _contextClassLoader_offset; | |
182 static int _inheritedAccessControlContext_offset; | |
183 static int _priority_offset; | |
184 static int _eetop_offset; | |
185 static int _daemon_offset; | |
186 static int _stillborn_offset; | |
187 static int _stackSize_offset; | |
188 static int _tid_offset; | |
189 static int _thread_status_offset; | |
190 static int _park_blocker_offset; | |
191 static int _park_event_offset ; | |
192 | |
193 static void compute_offsets(); | |
194 | |
195 public: | |
196 // Instance creation | |
197 static oop create(); | |
198 // Returns the JavaThread associated with the thread obj | |
199 static JavaThread* thread(oop java_thread); | |
200 // Set JavaThread for instance | |
201 static void set_thread(oop java_thread, JavaThread* thread); | |
202 // Name | |
203 static typeArrayOop name(oop java_thread); | |
204 static void set_name(oop java_thread, typeArrayOop name); | |
205 // Priority | |
206 static ThreadPriority priority(oop java_thread); | |
207 static void set_priority(oop java_thread, ThreadPriority priority); | |
208 // Thread group | |
209 static oop threadGroup(oop java_thread); | |
210 // Stillborn | |
211 static bool is_stillborn(oop java_thread); | |
212 static void set_stillborn(oop java_thread); | |
213 // Alive (NOTE: this is not really a field, but provides the correct | |
214 // definition without doing a Java call) | |
215 static bool is_alive(oop java_thread); | |
216 // Daemon | |
217 static bool is_daemon(oop java_thread); | |
218 static void set_daemon(oop java_thread); | |
219 // Context ClassLoader | |
220 static oop context_class_loader(oop java_thread); | |
221 // Control context | |
222 static oop inherited_access_control_context(oop java_thread); | |
223 // Stack size hint | |
224 static jlong stackSize(oop java_thread); | |
225 // Thread ID | |
226 static jlong thread_id(oop java_thread); | |
227 | |
228 // Blocker object responsible for thread parking | |
229 static oop park_blocker(oop java_thread); | |
230 | |
231 // Pointer to type-stable park handler, encoded as jlong. | |
232 // Should be set when apparently null | |
233 // For details, see unsafe.cpp Unsafe_Unpark | |
234 static jlong park_event(oop java_thread); | |
235 static bool set_park_event(oop java_thread, jlong ptr); | |
236 | |
237 // Java Thread Status for JVMTI and M&M use. | |
238 // This thread status info is saved in threadStatus field of | |
239 // java.lang.Thread java class. | |
240 enum ThreadStatus { | |
241 NEW = 0, | |
242 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
243 JVMTI_THREAD_STATE_RUNNABLE, | |
244 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
245 JVMTI_THREAD_STATE_WAITING + | |
246 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
247 JVMTI_THREAD_STATE_SLEEPING, | |
248 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
249 JVMTI_THREAD_STATE_WAITING + | |
250 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
251 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
252 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
253 JVMTI_THREAD_STATE_WAITING + | |
254 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
255 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
256 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
257 JVMTI_THREAD_STATE_WAITING + | |
258 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
259 JVMTI_THREAD_STATE_PARKED, | |
260 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
261 JVMTI_THREAD_STATE_WAITING + | |
262 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
263 JVMTI_THREAD_STATE_PARKED, | |
264 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
265 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
266 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
267 }; | |
268 // Write thread status info to threadStatus field of java.lang.Thread. | |
269 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
270 // Read thread status info from threadStatus field of java.lang.Thread. | |
271 static ThreadStatus get_thread_status(oop java_thread_oop); | |
272 | |
273 static const char* thread_status_name(oop java_thread_oop); | |
274 | |
275 // Debugging | |
276 friend class JavaClasses; | |
277 }; | |
278 | |
279 // Interface to java.lang.ThreadGroup objects | |
280 | |
281 class java_lang_ThreadGroup : AllStatic { | |
282 private: | |
283 static int _parent_offset; | |
284 static int _name_offset; | |
285 static int _threads_offset; | |
286 static int _groups_offset; | |
287 static int _maxPriority_offset; | |
288 static int _destroyed_offset; | |
289 static int _daemon_offset; | |
290 static int _vmAllowSuspension_offset; | |
291 static int _nthreads_offset; | |
292 static int _ngroups_offset; | |
293 | |
294 static void compute_offsets(); | |
295 | |
296 public: | |
297 // parent ThreadGroup | |
298 static oop parent(oop java_thread_group); | |
299 // name | |
300 static typeArrayOop name(oop java_thread_group); | |
301 // ("name as oop" accessor is not necessary) | |
302 // Number of threads in group | |
303 static int nthreads(oop java_thread_group); | |
304 // threads | |
305 static objArrayOop threads(oop java_thread_group); | |
306 // Number of threads in group | |
307 static int ngroups(oop java_thread_group); | |
308 // groups | |
309 static objArrayOop groups(oop java_thread_group); | |
310 // maxPriority in group | |
311 static ThreadPriority maxPriority(oop java_thread_group); | |
312 // Destroyed | |
313 static bool is_destroyed(oop java_thread_group); | |
314 // Daemon | |
315 static bool is_daemon(oop java_thread_group); | |
316 // vmAllowSuspension | |
317 static bool is_vmAllowSuspension(oop java_thread_group); | |
318 // Debugging | |
319 friend class JavaClasses; | |
320 }; | |
321 | |
322 | |
323 | |
324 // Interface to java.lang.Throwable objects | |
325 | |
326 class java_lang_Throwable: AllStatic { | |
327 friend class BacktraceBuilder; | |
328 | |
329 private: | |
330 // Offsets | |
331 enum { | |
332 hc_backtrace_offset = 0, | |
333 hc_detailMessage_offset = 1, | |
334 hc_cause_offset = 2, // New since 1.4 | |
335 hc_stackTrace_offset = 3 // New since 1.4 | |
336 }; | |
337 // Trace constants | |
338 enum { | |
339 trace_methods_offset = 0, | |
340 trace_bcis_offset = 1, | |
341 trace_next_offset = 2, | |
342 trace_size = 3, | |
343 trace_chunk_size = 32 | |
344 }; | |
345 | |
346 static int backtrace_offset; | |
347 static int detailMessage_offset; | |
348 static int cause_offset; | |
349 static int stackTrace_offset; | |
350 | |
351 // Printing | |
352 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
353 static void print_to_stream(Handle stream, const char* str); | |
354 // StackTrace (programmatic access, new since 1.4) | |
355 static void clear_stacktrace(oop throwable); | |
356 // No stack trace available | |
357 static const char* no_stack_trace_message(); | |
358 | |
359 public: | |
360 // Backtrace | |
361 static oop backtrace(oop throwable); | |
362 static void set_backtrace(oop throwable, oop value); | |
363 // Needed by JVMTI to filter out this internal field. | |
364 static int get_backtrace_offset() { return backtrace_offset;} | |
365 static int get_detailMessage_offset() { return detailMessage_offset;} | |
366 // Message | |
367 static oop message(oop throwable); | |
368 static oop message(Handle throwable); | |
369 static void set_message(oop throwable, oop value); | |
370 // Print stack trace stored in exception by call-back to Java | |
371 // Note: this is no longer used in Merlin, but we still suppport | |
372 // it for compatibility. | |
373 static void print_stack_trace(oop throwable, oop print_stream); | |
374 static void print_stack_element(Handle stream, methodOop method, int bci); | |
375 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
376 static void print_stack_usage(Handle stream); | |
377 | |
378 // Allocate space for backtrace (created but stack trace not filled in) | |
379 static void allocate_backtrace(Handle throwable, TRAPS); | |
380 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
381 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
382 | |
383 // Fill in current stack trace, can cause GC | |
384 static void fill_in_stack_trace(Handle throwable, TRAPS); | |
385 static void fill_in_stack_trace(Handle throwable); | |
386 // Programmatic access to stack trace | |
387 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
388 static int get_stack_trace_depth(oop throwable, TRAPS); | |
389 // Printing | |
390 static void print(oop throwable, outputStream* st); | |
391 static void print(Handle throwable, outputStream* st); | |
392 static void print_stack_trace(oop throwable, outputStream* st); | |
393 // Debugging | |
394 friend class JavaClasses; | |
395 }; | |
396 | |
397 | |
398 // Interface to java.lang.reflect.AccessibleObject objects | |
399 | |
400 class java_lang_reflect_AccessibleObject: AllStatic { | |
401 private: | |
402 // Note that to reduce dependencies on the JDK we compute these | |
403 // offsets at run-time. | |
404 static int override_offset; | |
405 | |
406 static void compute_offsets(); | |
407 | |
408 public: | |
409 // Accessors | |
410 static jboolean override(oop reflect); | |
411 static void set_override(oop reflect, jboolean value); | |
412 | |
413 // Debugging | |
414 friend class JavaClasses; | |
415 }; | |
416 | |
417 | |
418 // Interface to java.lang.reflect.Method objects | |
419 | |
420 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
421 private: | |
422 // Note that to reduce dependencies on the JDK we compute these | |
423 // offsets at run-time. | |
424 static int clazz_offset; | |
425 static int name_offset; | |
426 static int returnType_offset; | |
427 static int parameterTypes_offset; | |
428 static int exceptionTypes_offset; | |
429 static int slot_offset; | |
430 static int modifiers_offset; | |
431 static int signature_offset; | |
432 static int annotations_offset; | |
433 static int parameter_annotations_offset; | |
434 static int annotation_default_offset; | |
435 | |
436 static void compute_offsets(); | |
437 | |
438 public: | |
439 // Allocation | |
440 static Handle create(TRAPS); | |
441 | |
442 // Accessors | |
443 static oop clazz(oop reflect); | |
444 static void set_clazz(oop reflect, oop value); | |
445 | |
446 static oop name(oop method); | |
447 static void set_name(oop method, oop value); | |
448 | |
449 static oop return_type(oop method); | |
450 static void set_return_type(oop method, oop value); | |
451 | |
452 static oop parameter_types(oop method); | |
453 static void set_parameter_types(oop method, oop value); | |
454 | |
455 static oop exception_types(oop method); | |
456 static void set_exception_types(oop method, oop value); | |
457 | |
458 static int slot(oop reflect); | |
459 static void set_slot(oop reflect, int value); | |
460 | |
461 static int modifiers(oop method); | |
462 static void set_modifiers(oop method, int value); | |
463 | |
464 static bool has_signature_field(); | |
465 static oop signature(oop method); | |
466 static void set_signature(oop method, oop value); | |
467 | |
468 static bool has_annotations_field(); | |
469 static oop annotations(oop method); | |
470 static void set_annotations(oop method, oop value); | |
471 | |
472 static bool has_parameter_annotations_field(); | |
473 static oop parameter_annotations(oop method); | |
474 static void set_parameter_annotations(oop method, oop value); | |
475 | |
476 static bool has_annotation_default_field(); | |
477 static oop annotation_default(oop method); | |
478 static void set_annotation_default(oop method, oop value); | |
479 | |
480 // Debugging | |
481 friend class JavaClasses; | |
482 }; | |
483 | |
484 | |
485 // Interface to java.lang.reflect.Constructor objects | |
486 | |
487 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
488 private: | |
489 // Note that to reduce dependencies on the JDK we compute these | |
490 // offsets at run-time. | |
491 static int clazz_offset; | |
492 static int parameterTypes_offset; | |
493 static int exceptionTypes_offset; | |
494 static int slot_offset; | |
495 static int modifiers_offset; | |
496 static int signature_offset; | |
497 static int annotations_offset; | |
498 static int parameter_annotations_offset; | |
499 | |
500 static void compute_offsets(); | |
501 | |
502 public: | |
503 // Allocation | |
504 static Handle create(TRAPS); | |
505 | |
506 // Accessors | |
507 static oop clazz(oop reflect); | |
508 static void set_clazz(oop reflect, oop value); | |
509 | |
510 static oop parameter_types(oop constructor); | |
511 static void set_parameter_types(oop constructor, oop value); | |
512 | |
513 static oop exception_types(oop constructor); | |
514 static void set_exception_types(oop constructor, oop value); | |
515 | |
516 static int slot(oop reflect); | |
517 static void set_slot(oop reflect, int value); | |
518 | |
519 static int modifiers(oop constructor); | |
520 static void set_modifiers(oop constructor, int value); | |
521 | |
522 static bool has_signature_field(); | |
523 static oop signature(oop constructor); | |
524 static void set_signature(oop constructor, oop value); | |
525 | |
526 static bool has_annotations_field(); | |
527 static oop annotations(oop constructor); | |
528 static void set_annotations(oop constructor, oop value); | |
529 | |
530 static bool has_parameter_annotations_field(); | |
531 static oop parameter_annotations(oop method); | |
532 static void set_parameter_annotations(oop method, oop value); | |
533 | |
534 // Debugging | |
535 friend class JavaClasses; | |
536 }; | |
537 | |
538 | |
539 // Interface to java.lang.reflect.Field objects | |
540 | |
541 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
542 private: | |
543 // Note that to reduce dependencies on the JDK we compute these | |
544 // offsets at run-time. | |
545 static int clazz_offset; | |
546 static int name_offset; | |
547 static int type_offset; | |
548 static int slot_offset; | |
549 static int modifiers_offset; | |
550 static int signature_offset; | |
551 static int annotations_offset; | |
552 | |
553 static void compute_offsets(); | |
554 | |
555 public: | |
556 // Allocation | |
557 static Handle create(TRAPS); | |
558 | |
559 // Accessors | |
560 static oop clazz(oop reflect); | |
561 static void set_clazz(oop reflect, oop value); | |
562 | |
563 static oop name(oop field); | |
564 static void set_name(oop field, oop value); | |
565 | |
566 static oop type(oop field); | |
567 static void set_type(oop field, oop value); | |
568 | |
569 static int slot(oop reflect); | |
570 static void set_slot(oop reflect, int value); | |
571 | |
572 static int modifiers(oop field); | |
573 static void set_modifiers(oop field, int value); | |
574 | |
575 static bool has_signature_field(); | |
576 static oop signature(oop constructor); | |
577 static void set_signature(oop constructor, oop value); | |
578 | |
579 static bool has_annotations_field(); | |
580 static oop annotations(oop constructor); | |
581 static void set_annotations(oop constructor, oop value); | |
582 | |
583 static bool has_parameter_annotations_field(); | |
584 static oop parameter_annotations(oop method); | |
585 static void set_parameter_annotations(oop method, oop value); | |
586 | |
587 static bool has_annotation_default_field(); | |
588 static oop annotation_default(oop method); | |
589 static void set_annotation_default(oop method, oop value); | |
590 | |
591 // Debugging | |
592 friend class JavaClasses; | |
593 }; | |
594 | |
595 // Interface to sun.reflect.ConstantPool objects | |
596 class sun_reflect_ConstantPool { | |
597 private: | |
598 // Note that to reduce dependencies on the JDK we compute these | |
599 // offsets at run-time. | |
600 static int _cp_oop_offset; | |
601 | |
602 static void compute_offsets(); | |
603 | |
604 public: | |
605 // Allocation | |
606 static Handle create(TRAPS); | |
607 | |
608 // Accessors | |
609 static oop cp_oop(oop reflect); | |
610 static void set_cp_oop(oop reflect, oop value); | |
611 static int cp_oop_offset() { | |
612 return _cp_oop_offset; | |
613 } | |
614 | |
615 // Debugging | |
616 friend class JavaClasses; | |
617 }; | |
618 | |
619 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
620 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
621 private: | |
622 static int _base_offset; | |
623 static void compute_offsets(); | |
624 | |
625 public: | |
626 static int base_offset() { | |
627 return _base_offset; | |
628 } | |
629 | |
630 // Debugging | |
631 friend class JavaClasses; | |
632 }; | |
633 | |
634 // Interface to java.lang primitive type boxing objects: | |
635 // - java.lang.Boolean | |
636 // - java.lang.Character | |
637 // - java.lang.Float | |
638 // - java.lang.Double | |
639 // - java.lang.Byte | |
640 // - java.lang.Short | |
641 // - java.lang.Integer | |
642 // - java.lang.Long | |
643 | |
644 // This could be separated out into 8 individual classes. | |
645 | |
646 class java_lang_boxing_object: AllStatic { | |
647 private: | |
648 enum { | |
649 hc_value_offset = 0 | |
650 }; | |
651 static int value_offset; | |
652 | |
653 static oop initialize_and_allocate(klassOop klass, TRAPS); | |
654 public: | |
655 // Allocation. Returns a boxed value, or NULL for invalid type. | |
656 static oop create(BasicType type, jvalue* value, TRAPS); | |
657 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
658 static BasicType get_value(oop box, jvalue* value); | |
659 static BasicType set_value(oop box, jvalue* value); | |
660 | |
661 static int value_offset_in_bytes() { return value_offset; } | |
662 | |
663 // Debugging | |
664 friend class JavaClasses; | |
665 }; | |
666 | |
667 | |
668 | |
669 // Interface to java.lang.ref.Reference objects | |
670 | |
671 class java_lang_ref_Reference: AllStatic { | |
672 public: | |
673 enum { | |
674 hc_referent_offset = 0, | |
675 hc_queue_offset = 1, | |
676 hc_next_offset = 2, | |
677 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
678 }; | |
679 enum { | |
680 hc_static_lock_offset = 0, | |
681 hc_static_pending_offset = 1 | |
682 }; | |
683 | |
684 static int referent_offset; | |
685 static int queue_offset; | |
686 static int next_offset; | |
687 static int discovered_offset; | |
688 static int static_lock_offset; | |
689 static int static_pending_offset; | |
690 static int number_of_fake_oop_fields; | |
691 | |
692 // Accessors | |
693 static oop referent(oop ref) { return *referent_addr(ref); } | |
694 static void set_referent(oop ref, oop value); | |
695 static oop* referent_addr(oop ref); | |
696 | |
697 static oop next(oop ref) { return *next_addr(ref); } | |
698 static void set_next(oop ref, oop value); | |
699 static oop* next_addr(oop ref); | |
700 | |
701 static oop discovered(oop ref) { return *discovered_addr(ref); } | |
702 static void set_discovered(oop ref, oop value); | |
703 static oop* discovered_addr(oop ref); | |
704 | |
705 // Accessors for statics | |
706 static oop pending_list_lock() { return *pending_list_lock_addr(); } | |
707 static oop pending_list() { return *pending_list_addr(); } | |
708 | |
709 static oop* pending_list_lock_addr(); | |
710 static oop* pending_list_addr(); | |
711 }; | |
712 | |
713 | |
714 // Interface to java.lang.ref.SoftReference objects | |
715 | |
716 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
717 public: | |
718 enum { | |
719 // The timestamp is a long field and may need to be adjusted for alignment. | |
720 hc_timestamp_offset = align_object_offset_(hc_discovered_offset + 1) | |
721 }; | |
722 enum { | |
723 hc_static_clock_offset = 0 | |
724 }; | |
725 | |
726 static int timestamp_offset; | |
727 static int static_clock_offset; | |
728 | |
729 // Accessors | |
730 static jlong timestamp(oop ref); | |
731 | |
732 // Accessors for statics | |
733 static jlong clock(); | |
734 static void set_clock(jlong value); | |
735 }; | |
736 | |
737 | |
738 // Interface to java.security.AccessControlContext objects | |
739 | |
740 class java_security_AccessControlContext: AllStatic { | |
741 private: | |
742 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
743 // so we compute the offsets at startup rather than hard-wiring them. | |
744 static int _context_offset; | |
745 static int _privilegedContext_offset; | |
746 static int _isPrivileged_offset; | |
747 | |
748 static void compute_offsets(); | |
749 public: | |
750 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
751 | |
752 // Debugging/initialization | |
753 friend class JavaClasses; | |
754 }; | |
755 | |
756 | |
757 // Interface to java.lang.ClassLoader objects | |
758 | |
759 class java_lang_ClassLoader : AllStatic { | |
760 private: | |
761 enum { | |
762 hc_parent_offset = 0 | |
763 }; | |
764 | |
765 static int parent_offset; | |
766 | |
767 public: | |
768 static oop parent(oop loader); | |
769 | |
770 static bool is_trusted_loader(oop loader); | |
771 | |
772 // Fix for 4474172 | |
773 static oop non_reflection_class_loader(oop loader); | |
774 | |
775 // Debugging | |
776 friend class JavaClasses; | |
777 }; | |
778 | |
779 | |
780 // Interface to java.lang.System objects | |
781 | |
782 class java_lang_System : AllStatic { | |
783 private: | |
784 enum { | |
785 hc_static_in_offset = 0, | |
786 hc_static_out_offset = 1, | |
787 hc_static_err_offset = 2 | |
788 }; | |
789 | |
790 static int offset_of_static_fields; | |
791 static int static_in_offset; | |
792 static int static_out_offset; | |
793 static int static_err_offset; | |
794 | |
795 static void compute_offsets(); | |
796 | |
797 public: | |
798 static int in_offset_in_bytes(); | |
799 static int out_offset_in_bytes(); | |
800 static int err_offset_in_bytes(); | |
801 | |
802 // Debugging | |
803 friend class JavaClasses; | |
804 }; | |
805 | |
806 | |
807 // Interface to java.lang.StackTraceElement objects | |
808 | |
809 class java_lang_StackTraceElement: AllStatic { | |
810 private: | |
811 enum { | |
812 hc_declaringClass_offset = 0, | |
813 hc_methodName_offset = 1, | |
814 hc_fileName_offset = 2, | |
815 hc_lineNumber_offset = 3 | |
816 }; | |
817 | |
818 static int declaringClass_offset; | |
819 static int methodName_offset; | |
820 static int fileName_offset; | |
821 static int lineNumber_offset; | |
822 | |
823 public: | |
824 // Setters | |
825 static void set_declaringClass(oop element, oop value); | |
826 static void set_methodName(oop element, oop value); | |
827 static void set_fileName(oop element, oop value); | |
828 static void set_lineNumber(oop element, int value); | |
829 | |
830 // Create an instance of StackTraceElement | |
831 static oop create(methodHandle m, int bci, TRAPS); | |
832 | |
833 // Debugging | |
834 friend class JavaClasses; | |
835 }; | |
836 | |
837 | |
838 // Interface to java.lang.AssertionStatusDirectives objects | |
839 | |
840 class java_lang_AssertionStatusDirectives: AllStatic { | |
841 private: | |
842 enum { | |
843 hc_classes_offset, | |
844 hc_classEnabled_offset, | |
845 hc_packages_offset, | |
846 hc_packageEnabled_offset, | |
847 hc_deflt_offset | |
848 }; | |
849 | |
850 static int classes_offset; | |
851 static int classEnabled_offset; | |
852 static int packages_offset; | |
853 static int packageEnabled_offset; | |
854 static int deflt_offset; | |
855 | |
856 public: | |
857 // Setters | |
858 static void set_classes(oop obj, oop val); | |
859 static void set_classEnabled(oop obj, oop val); | |
860 static void set_packages(oop obj, oop val); | |
861 static void set_packageEnabled(oop obj, oop val); | |
862 static void set_deflt(oop obj, bool val); | |
863 // Debugging | |
864 friend class JavaClasses; | |
865 }; | |
866 | |
867 | |
868 class java_nio_Buffer: AllStatic { | |
869 private: | |
870 static int _limit_offset; | |
871 | |
872 public: | |
873 static int limit_offset(); | |
874 static void compute_offsets(); | |
875 }; | |
876 | |
877 class sun_misc_AtomicLongCSImpl: AllStatic { | |
878 private: | |
879 static int _value_offset; | |
880 | |
881 public: | |
882 static int value_offset(); | |
883 static void compute_offsets(); | |
884 }; | |
885 | |
886 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
887 private: | |
888 static int _owner_offset; | |
889 public: | |
890 static void initialize(TRAPS); | |
891 static oop get_owner_threadObj(oop obj); | |
892 }; | |
893 | |
894 // Interface to hard-coded offset checking | |
895 | |
896 class JavaClasses : AllStatic { | |
897 private: | |
898 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
899 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
900 public: | |
901 static void compute_hard_coded_offsets(); | |
902 static void compute_offsets(); | |
903 static void check_offsets() PRODUCT_RETURN; | |
904 }; |