Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 665:c89f86385056
6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never
author | jrose |
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date | Fri, 20 Mar 2009 23:19:36 -0700 |
parents | 0fbdb4381b99 |
children | e5b0439ef4ae |
rev | line source |
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0 | 1 /* |
579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
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, | |
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48 hc_offset_offset = 1 |
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49 //hc_count_offset = 2 -- not a word-scaled offset |
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50 //hc_hash_offset = 3 -- not a word-scaled offset |
0 | 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); | |
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99 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
0 | 100 static jchar* as_unicode_string(oop java_string, int& length); |
101 | |
102 static bool equals(oop java_string, jchar* chars, int len); | |
103 | |
104 // Conversion between '.' and '/' formats | |
105 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
106 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
107 | |
108 // Conversion | |
109 static symbolHandle as_symbol(Handle java_string, TRAPS); | |
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110 static symbolOop as_symbol_or_null(oop java_string); |
0 | 111 |
112 // Testers | |
113 static bool is_instance(oop obj) { | |
114 return obj != NULL && obj->klass() == SystemDictionary::string_klass(); | |
115 } | |
116 | |
117 // Debugging | |
118 static void print(Handle java_string, outputStream* st); | |
119 friend class JavaClasses; | |
120 }; | |
121 | |
122 | |
123 // Interface to java.lang.Class objects | |
124 | |
125 class java_lang_Class : AllStatic { | |
126 friend class VMStructs; | |
127 private: | |
128 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
129 | |
130 enum { | |
131 hc_klass_offset = 0, | |
132 hc_array_klass_offset = 1, | |
133 hc_resolved_constructor_offset = 2, | |
134 hc_number_of_fake_oop_fields = 3 | |
135 }; | |
136 | |
137 static int klass_offset; | |
138 static int resolved_constructor_offset; | |
139 static int array_klass_offset; | |
140 static int number_of_fake_oop_fields; | |
141 | |
142 static void compute_offsets(); | |
143 static bool offsets_computed; | |
144 static int classRedefinedCount_offset; | |
514 | 145 static int parallelCapable_offset; |
0 | 146 |
147 public: | |
148 // Instance creation | |
149 static oop create_mirror(KlassHandle k, TRAPS); | |
150 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); | |
151 // Conversion | |
152 static klassOop as_klassOop(oop java_class); | |
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153 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
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154 static symbolOop as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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155 static void print_signature(oop java_class, outputStream *st); |
0 | 156 // Testing |
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157 static bool is_instance(oop obj) { |
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158 return obj != NULL && obj->klass() == SystemDictionary::class_klass(); |
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159 } |
0 | 160 static bool is_primitive(oop java_class); |
161 static BasicType primitive_type(oop java_class); | |
162 static oop primitive_mirror(BasicType t); | |
163 // JVM_NewInstance support | |
164 static methodOop resolved_constructor(oop java_class); | |
165 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
166 // JVM_NewArray support | |
167 static klassOop array_klass(oop java_class); | |
168 static void set_array_klass(oop java_class, klassOop klass); | |
169 // compiler support for class operations | |
170 static int klass_offset_in_bytes() { return klass_offset; } | |
171 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } | |
172 static int array_klass_offset_in_bytes() { return array_klass_offset; } | |
173 // Support for classRedefinedCount field | |
174 static int classRedefinedCount(oop the_class_mirror); | |
175 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
514 | 176 // Support for parallelCapable field |
177 static bool parallelCapable(oop the_class_mirror); | |
0 | 178 // Debugging |
179 friend class JavaClasses; | |
180 friend class instanceKlass; // verification code accesses offsets | |
181 friend class ClassFileParser; // access to number_of_fake_fields | |
182 }; | |
183 | |
184 // Interface to java.lang.Thread objects | |
185 | |
186 class java_lang_Thread : AllStatic { | |
187 private: | |
188 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
189 // so we compute the offsets at startup rather than hard-wiring them. | |
190 static int _name_offset; | |
191 static int _group_offset; | |
192 static int _contextClassLoader_offset; | |
193 static int _inheritedAccessControlContext_offset; | |
194 static int _priority_offset; | |
195 static int _eetop_offset; | |
196 static int _daemon_offset; | |
197 static int _stillborn_offset; | |
198 static int _stackSize_offset; | |
199 static int _tid_offset; | |
200 static int _thread_status_offset; | |
201 static int _park_blocker_offset; | |
202 static int _park_event_offset ; | |
203 | |
204 static void compute_offsets(); | |
205 | |
206 public: | |
207 // Instance creation | |
208 static oop create(); | |
209 // Returns the JavaThread associated with the thread obj | |
210 static JavaThread* thread(oop java_thread); | |
211 // Set JavaThread for instance | |
212 static void set_thread(oop java_thread, JavaThread* thread); | |
213 // Name | |
214 static typeArrayOop name(oop java_thread); | |
215 static void set_name(oop java_thread, typeArrayOop name); | |
216 // Priority | |
217 static ThreadPriority priority(oop java_thread); | |
218 static void set_priority(oop java_thread, ThreadPriority priority); | |
219 // Thread group | |
220 static oop threadGroup(oop java_thread); | |
221 // Stillborn | |
222 static bool is_stillborn(oop java_thread); | |
223 static void set_stillborn(oop java_thread); | |
224 // Alive (NOTE: this is not really a field, but provides the correct | |
225 // definition without doing a Java call) | |
226 static bool is_alive(oop java_thread); | |
227 // Daemon | |
228 static bool is_daemon(oop java_thread); | |
229 static void set_daemon(oop java_thread); | |
230 // Context ClassLoader | |
231 static oop context_class_loader(oop java_thread); | |
232 // Control context | |
233 static oop inherited_access_control_context(oop java_thread); | |
234 // Stack size hint | |
235 static jlong stackSize(oop java_thread); | |
236 // Thread ID | |
237 static jlong thread_id(oop java_thread); | |
238 | |
239 // Blocker object responsible for thread parking | |
240 static oop park_blocker(oop java_thread); | |
241 | |
242 // Pointer to type-stable park handler, encoded as jlong. | |
243 // Should be set when apparently null | |
244 // For details, see unsafe.cpp Unsafe_Unpark | |
245 static jlong park_event(oop java_thread); | |
246 static bool set_park_event(oop java_thread, jlong ptr); | |
247 | |
248 // Java Thread Status for JVMTI and M&M use. | |
249 // This thread status info is saved in threadStatus field of | |
250 // java.lang.Thread java class. | |
251 enum ThreadStatus { | |
252 NEW = 0, | |
253 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
254 JVMTI_THREAD_STATE_RUNNABLE, | |
255 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
256 JVMTI_THREAD_STATE_WAITING + | |
257 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
258 JVMTI_THREAD_STATE_SLEEPING, | |
259 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
260 JVMTI_THREAD_STATE_WAITING + | |
261 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
262 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
263 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
264 JVMTI_THREAD_STATE_WAITING + | |
265 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
266 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
267 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
268 JVMTI_THREAD_STATE_WAITING + | |
269 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
270 JVMTI_THREAD_STATE_PARKED, | |
271 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
272 JVMTI_THREAD_STATE_WAITING + | |
273 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
274 JVMTI_THREAD_STATE_PARKED, | |
275 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
276 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
277 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
278 }; | |
279 // Write thread status info to threadStatus field of java.lang.Thread. | |
280 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
281 // Read thread status info from threadStatus field of java.lang.Thread. | |
282 static ThreadStatus get_thread_status(oop java_thread_oop); | |
283 | |
284 static const char* thread_status_name(oop java_thread_oop); | |
285 | |
286 // Debugging | |
287 friend class JavaClasses; | |
288 }; | |
289 | |
290 // Interface to java.lang.ThreadGroup objects | |
291 | |
292 class java_lang_ThreadGroup : AllStatic { | |
293 private: | |
294 static int _parent_offset; | |
295 static int _name_offset; | |
296 static int _threads_offset; | |
297 static int _groups_offset; | |
298 static int _maxPriority_offset; | |
299 static int _destroyed_offset; | |
300 static int _daemon_offset; | |
301 static int _vmAllowSuspension_offset; | |
302 static int _nthreads_offset; | |
303 static int _ngroups_offset; | |
304 | |
305 static void compute_offsets(); | |
306 | |
307 public: | |
308 // parent ThreadGroup | |
309 static oop parent(oop java_thread_group); | |
310 // name | |
311 static typeArrayOop name(oop java_thread_group); | |
312 // ("name as oop" accessor is not necessary) | |
313 // Number of threads in group | |
314 static int nthreads(oop java_thread_group); | |
315 // threads | |
316 static objArrayOop threads(oop java_thread_group); | |
317 // Number of threads in group | |
318 static int ngroups(oop java_thread_group); | |
319 // groups | |
320 static objArrayOop groups(oop java_thread_group); | |
321 // maxPriority in group | |
322 static ThreadPriority maxPriority(oop java_thread_group); | |
323 // Destroyed | |
324 static bool is_destroyed(oop java_thread_group); | |
325 // Daemon | |
326 static bool is_daemon(oop java_thread_group); | |
327 // vmAllowSuspension | |
328 static bool is_vmAllowSuspension(oop java_thread_group); | |
329 // Debugging | |
330 friend class JavaClasses; | |
331 }; | |
332 | |
333 | |
334 | |
335 // Interface to java.lang.Throwable objects | |
336 | |
337 class java_lang_Throwable: AllStatic { | |
338 friend class BacktraceBuilder; | |
339 | |
340 private: | |
341 // Offsets | |
342 enum { | |
343 hc_backtrace_offset = 0, | |
344 hc_detailMessage_offset = 1, | |
345 hc_cause_offset = 2, // New since 1.4 | |
346 hc_stackTrace_offset = 3 // New since 1.4 | |
347 }; | |
348 // Trace constants | |
349 enum { | |
350 trace_methods_offset = 0, | |
351 trace_bcis_offset = 1, | |
352 trace_next_offset = 2, | |
353 trace_size = 3, | |
354 trace_chunk_size = 32 | |
355 }; | |
356 | |
357 static int backtrace_offset; | |
358 static int detailMessage_offset; | |
359 static int cause_offset; | |
360 static int stackTrace_offset; | |
361 | |
362 // Printing | |
363 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
364 static void print_to_stream(Handle stream, const char* str); | |
365 // StackTrace (programmatic access, new since 1.4) | |
366 static void clear_stacktrace(oop throwable); | |
367 // No stack trace available | |
368 static const char* no_stack_trace_message(); | |
369 | |
370 public: | |
371 // Backtrace | |
372 static oop backtrace(oop throwable); | |
373 static void set_backtrace(oop throwable, oop value); | |
374 // Needed by JVMTI to filter out this internal field. | |
375 static int get_backtrace_offset() { return backtrace_offset;} | |
376 static int get_detailMessage_offset() { return detailMessage_offset;} | |
377 // Message | |
378 static oop message(oop throwable); | |
379 static oop message(Handle throwable); | |
380 static void set_message(oop throwable, oop value); | |
381 // Print stack trace stored in exception by call-back to Java | |
382 // Note: this is no longer used in Merlin, but we still suppport | |
383 // it for compatibility. | |
384 static void print_stack_trace(oop throwable, oop print_stream); | |
385 static void print_stack_element(Handle stream, methodOop method, int bci); | |
386 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
387 static void print_stack_usage(Handle stream); | |
388 | |
389 // Allocate space for backtrace (created but stack trace not filled in) | |
390 static void allocate_backtrace(Handle throwable, TRAPS); | |
391 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
392 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
393 | |
394 // Fill in current stack trace, can cause GC | |
395 static void fill_in_stack_trace(Handle throwable, TRAPS); | |
396 static void fill_in_stack_trace(Handle throwable); | |
397 // Programmatic access to stack trace | |
398 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
399 static int get_stack_trace_depth(oop throwable, TRAPS); | |
400 // Printing | |
401 static void print(oop throwable, outputStream* st); | |
402 static void print(Handle throwable, outputStream* st); | |
403 static void print_stack_trace(oop throwable, outputStream* st); | |
404 // Debugging | |
405 friend class JavaClasses; | |
406 }; | |
407 | |
408 | |
409 // Interface to java.lang.reflect.AccessibleObject objects | |
410 | |
411 class java_lang_reflect_AccessibleObject: AllStatic { | |
412 private: | |
413 // Note that to reduce dependencies on the JDK we compute these | |
414 // offsets at run-time. | |
415 static int override_offset; | |
416 | |
417 static void compute_offsets(); | |
418 | |
419 public: | |
420 // Accessors | |
421 static jboolean override(oop reflect); | |
422 static void set_override(oop reflect, jboolean value); | |
423 | |
424 // Debugging | |
425 friend class JavaClasses; | |
426 }; | |
427 | |
428 | |
429 // Interface to java.lang.reflect.Method objects | |
430 | |
431 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
432 private: | |
433 // Note that to reduce dependencies on the JDK we compute these | |
434 // offsets at run-time. | |
435 static int clazz_offset; | |
436 static int name_offset; | |
437 static int returnType_offset; | |
438 static int parameterTypes_offset; | |
439 static int exceptionTypes_offset; | |
440 static int slot_offset; | |
441 static int modifiers_offset; | |
442 static int signature_offset; | |
443 static int annotations_offset; | |
444 static int parameter_annotations_offset; | |
445 static int annotation_default_offset; | |
446 | |
447 static void compute_offsets(); | |
448 | |
449 public: | |
450 // Allocation | |
451 static Handle create(TRAPS); | |
452 | |
453 // Accessors | |
454 static oop clazz(oop reflect); | |
455 static void set_clazz(oop reflect, oop value); | |
456 | |
457 static oop name(oop method); | |
458 static void set_name(oop method, oop value); | |
459 | |
460 static oop return_type(oop method); | |
461 static void set_return_type(oop method, oop value); | |
462 | |
463 static oop parameter_types(oop method); | |
464 static void set_parameter_types(oop method, oop value); | |
465 | |
466 static oop exception_types(oop method); | |
467 static void set_exception_types(oop method, oop value); | |
468 | |
469 static int slot(oop reflect); | |
470 static void set_slot(oop reflect, int value); | |
471 | |
472 static int modifiers(oop method); | |
473 static void set_modifiers(oop method, int value); | |
474 | |
475 static bool has_signature_field(); | |
476 static oop signature(oop method); | |
477 static void set_signature(oop method, oop value); | |
478 | |
479 static bool has_annotations_field(); | |
480 static oop annotations(oop method); | |
481 static void set_annotations(oop method, oop value); | |
482 | |
483 static bool has_parameter_annotations_field(); | |
484 static oop parameter_annotations(oop method); | |
485 static void set_parameter_annotations(oop method, oop value); | |
486 | |
487 static bool has_annotation_default_field(); | |
488 static oop annotation_default(oop method); | |
489 static void set_annotation_default(oop method, oop value); | |
490 | |
491 // Debugging | |
492 friend class JavaClasses; | |
493 }; | |
494 | |
495 | |
496 // Interface to java.lang.reflect.Constructor objects | |
497 | |
498 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
499 private: | |
500 // Note that to reduce dependencies on the JDK we compute these | |
501 // offsets at run-time. | |
502 static int clazz_offset; | |
503 static int parameterTypes_offset; | |
504 static int exceptionTypes_offset; | |
505 static int slot_offset; | |
506 static int modifiers_offset; | |
507 static int signature_offset; | |
508 static int annotations_offset; | |
509 static int parameter_annotations_offset; | |
510 | |
511 static void compute_offsets(); | |
512 | |
513 public: | |
514 // Allocation | |
515 static Handle create(TRAPS); | |
516 | |
517 // Accessors | |
518 static oop clazz(oop reflect); | |
519 static void set_clazz(oop reflect, oop value); | |
520 | |
521 static oop parameter_types(oop constructor); | |
522 static void set_parameter_types(oop constructor, oop value); | |
523 | |
524 static oop exception_types(oop constructor); | |
525 static void set_exception_types(oop constructor, oop value); | |
526 | |
527 static int slot(oop reflect); | |
528 static void set_slot(oop reflect, int value); | |
529 | |
530 static int modifiers(oop constructor); | |
531 static void set_modifiers(oop constructor, int value); | |
532 | |
533 static bool has_signature_field(); | |
534 static oop signature(oop constructor); | |
535 static void set_signature(oop constructor, oop value); | |
536 | |
537 static bool has_annotations_field(); | |
538 static oop annotations(oop constructor); | |
539 static void set_annotations(oop constructor, oop value); | |
540 | |
541 static bool has_parameter_annotations_field(); | |
542 static oop parameter_annotations(oop method); | |
543 static void set_parameter_annotations(oop method, oop value); | |
544 | |
545 // Debugging | |
546 friend class JavaClasses; | |
547 }; | |
548 | |
549 | |
550 // Interface to java.lang.reflect.Field objects | |
551 | |
552 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
553 private: | |
554 // Note that to reduce dependencies on the JDK we compute these | |
555 // offsets at run-time. | |
556 static int clazz_offset; | |
557 static int name_offset; | |
558 static int type_offset; | |
559 static int slot_offset; | |
560 static int modifiers_offset; | |
561 static int signature_offset; | |
562 static int annotations_offset; | |
563 | |
564 static void compute_offsets(); | |
565 | |
566 public: | |
567 // Allocation | |
568 static Handle create(TRAPS); | |
569 | |
570 // Accessors | |
571 static oop clazz(oop reflect); | |
572 static void set_clazz(oop reflect, oop value); | |
573 | |
574 static oop name(oop field); | |
575 static void set_name(oop field, oop value); | |
576 | |
577 static oop type(oop field); | |
578 static void set_type(oop field, oop value); | |
579 | |
580 static int slot(oop reflect); | |
581 static void set_slot(oop reflect, int value); | |
582 | |
583 static int modifiers(oop field); | |
584 static void set_modifiers(oop field, int value); | |
585 | |
586 static bool has_signature_field(); | |
587 static oop signature(oop constructor); | |
588 static void set_signature(oop constructor, oop value); | |
589 | |
590 static bool has_annotations_field(); | |
591 static oop annotations(oop constructor); | |
592 static void set_annotations(oop constructor, 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 // Interface to sun.reflect.ConstantPool objects | |
607 class sun_reflect_ConstantPool { | |
608 private: | |
609 // Note that to reduce dependencies on the JDK we compute these | |
610 // offsets at run-time. | |
611 static int _cp_oop_offset; | |
612 | |
613 static void compute_offsets(); | |
614 | |
615 public: | |
616 // Allocation | |
617 static Handle create(TRAPS); | |
618 | |
619 // Accessors | |
620 static oop cp_oop(oop reflect); | |
621 static void set_cp_oop(oop reflect, oop value); | |
622 static int cp_oop_offset() { | |
623 return _cp_oop_offset; | |
624 } | |
625 | |
626 // Debugging | |
627 friend class JavaClasses; | |
628 }; | |
629 | |
630 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
631 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
632 private: | |
633 static int _base_offset; | |
634 static void compute_offsets(); | |
635 | |
636 public: | |
637 static int base_offset() { | |
638 return _base_offset; | |
639 } | |
640 | |
641 // Debugging | |
642 friend class JavaClasses; | |
643 }; | |
644 | |
645 // Interface to java.lang primitive type boxing objects: | |
646 // - java.lang.Boolean | |
647 // - java.lang.Character | |
648 // - java.lang.Float | |
649 // - java.lang.Double | |
650 // - java.lang.Byte | |
651 // - java.lang.Short | |
652 // - java.lang.Integer | |
653 // - java.lang.Long | |
654 | |
655 // This could be separated out into 8 individual classes. | |
656 | |
657 class java_lang_boxing_object: AllStatic { | |
658 private: | |
659 enum { | |
660 hc_value_offset = 0 | |
661 }; | |
662 static int value_offset; | |
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663 static int long_value_offset; |
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665 static oop initialize_and_allocate(BasicType type, TRAPS); |
0 | 666 public: |
667 // Allocation. Returns a boxed value, or NULL for invalid type. | |
668 static oop create(BasicType type, jvalue* value, TRAPS); | |
669 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
670 static BasicType get_value(oop box, jvalue* value); | |
671 static BasicType set_value(oop box, jvalue* value); | |
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672 static BasicType basic_type(oop box); |
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673 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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674 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
665
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675 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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676 static void print(BasicType type, jvalue* value, outputStream* st); |
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678 static int value_offset_in_bytes(BasicType type) { |
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679 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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680 value_offset; |
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681 } |
0 | 682 |
683 // Debugging | |
684 friend class JavaClasses; | |
685 }; | |
686 | |
687 | |
688 | |
689 // Interface to java.lang.ref.Reference objects | |
690 | |
691 class java_lang_ref_Reference: AllStatic { | |
692 public: | |
693 enum { | |
694 hc_referent_offset = 0, | |
695 hc_queue_offset = 1, | |
696 hc_next_offset = 2, | |
697 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
698 }; | |
699 enum { | |
700 hc_static_lock_offset = 0, | |
701 hc_static_pending_offset = 1 | |
702 }; | |
703 | |
704 static int referent_offset; | |
705 static int queue_offset; | |
706 static int next_offset; | |
707 static int discovered_offset; | |
708 static int static_lock_offset; | |
709 static int static_pending_offset; | |
710 static int number_of_fake_oop_fields; | |
711 | |
712 // Accessors | |
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713 static oop referent(oop ref) { |
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714 return ref->obj_field(referent_offset); |
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715 } |
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716 static void set_referent(oop ref, oop value) { |
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717 ref->obj_field_put(referent_offset, value); |
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718 } |
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719 static void set_referent_raw(oop ref, oop value) { |
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720 ref->obj_field_raw_put(referent_offset, value); |
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721 } |
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722 static HeapWord* referent_addr(oop ref) { |
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723 return ref->obj_field_addr<HeapWord>(referent_offset); |
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724 } |
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725 static oop next(oop ref) { |
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726 return ref->obj_field(next_offset); |
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727 } |
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728 static void set_next(oop ref, oop value) { |
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729 ref->obj_field_put(next_offset, value); |
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730 } |
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731 static void set_next_raw(oop ref, oop value) { |
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732 ref->obj_field_raw_put(next_offset, value); |
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733 } |
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734 static HeapWord* next_addr(oop ref) { |
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735 return ref->obj_field_addr<HeapWord>(next_offset); |
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736 } |
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737 static oop discovered(oop ref) { |
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738 return ref->obj_field(discovered_offset); |
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739 } |
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740 static void set_discovered(oop ref, oop value) { |
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741 ref->obj_field_put(discovered_offset, value); |
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742 } |
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743 static void set_discovered_raw(oop ref, oop value) { |
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744 ref->obj_field_raw_put(discovered_offset, value); |
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745 } |
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746 static HeapWord* discovered_addr(oop ref) { |
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747 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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748 } |
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749 // Accessors for statics |
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750 static oop pending_list_lock(); |
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751 static oop pending_list(); |
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753 static HeapWord* pending_list_addr(); |
0 | 754 }; |
755 | |
756 | |
757 // Interface to java.lang.ref.SoftReference objects | |
758 | |
759 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
760 public: | |
761 enum { | |
762 // The timestamp is a long field and may need to be adjusted for alignment. | |
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763 hc_timestamp_offset = hc_discovered_offset + 1 |
0 | 764 }; |
765 enum { | |
766 hc_static_clock_offset = 0 | |
767 }; | |
768 | |
769 static int timestamp_offset; | |
770 static int static_clock_offset; | |
771 | |
772 // Accessors | |
773 static jlong timestamp(oop ref); | |
774 | |
775 // Accessors for statics | |
776 static jlong clock(); | |
777 static void set_clock(jlong value); | |
778 }; | |
779 | |
780 | |
781 // Interface to java.security.AccessControlContext objects | |
782 | |
783 class java_security_AccessControlContext: AllStatic { | |
784 private: | |
785 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
786 // so we compute the offsets at startup rather than hard-wiring them. | |
787 static int _context_offset; | |
788 static int _privilegedContext_offset; | |
789 static int _isPrivileged_offset; | |
790 | |
791 static void compute_offsets(); | |
792 public: | |
793 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
794 | |
795 // Debugging/initialization | |
796 friend class JavaClasses; | |
797 }; | |
798 | |
799 | |
800 // Interface to java.lang.ClassLoader objects | |
801 | |
802 class java_lang_ClassLoader : AllStatic { | |
803 private: | |
804 enum { | |
805 hc_parent_offset = 0 | |
806 }; | |
807 | |
808 static int parent_offset; | |
809 | |
810 public: | |
811 static oop parent(oop loader); | |
812 | |
813 static bool is_trusted_loader(oop loader); | |
814 | |
815 // Fix for 4474172 | |
816 static oop non_reflection_class_loader(oop loader); | |
817 | |
818 // Debugging | |
819 friend class JavaClasses; | |
820 }; | |
821 | |
822 | |
823 // Interface to java.lang.System objects | |
824 | |
825 class java_lang_System : AllStatic { | |
826 private: | |
827 enum { | |
828 hc_static_in_offset = 0, | |
829 hc_static_out_offset = 1, | |
830 hc_static_err_offset = 2 | |
831 }; | |
832 | |
833 static int offset_of_static_fields; | |
834 static int static_in_offset; | |
835 static int static_out_offset; | |
836 static int static_err_offset; | |
837 | |
838 static void compute_offsets(); | |
839 | |
840 public: | |
841 static int in_offset_in_bytes(); | |
842 static int out_offset_in_bytes(); | |
843 static int err_offset_in_bytes(); | |
844 | |
845 // Debugging | |
846 friend class JavaClasses; | |
847 }; | |
848 | |
849 | |
850 // Interface to java.lang.StackTraceElement objects | |
851 | |
852 class java_lang_StackTraceElement: AllStatic { | |
853 private: | |
854 enum { | |
855 hc_declaringClass_offset = 0, | |
856 hc_methodName_offset = 1, | |
857 hc_fileName_offset = 2, | |
858 hc_lineNumber_offset = 3 | |
859 }; | |
860 | |
861 static int declaringClass_offset; | |
862 static int methodName_offset; | |
863 static int fileName_offset; | |
864 static int lineNumber_offset; | |
865 | |
866 public: | |
867 // Setters | |
868 static void set_declaringClass(oop element, oop value); | |
869 static void set_methodName(oop element, oop value); | |
870 static void set_fileName(oop element, oop value); | |
871 static void set_lineNumber(oop element, int value); | |
872 | |
873 // Create an instance of StackTraceElement | |
874 static oop create(methodHandle m, int bci, TRAPS); | |
875 | |
876 // Debugging | |
877 friend class JavaClasses; | |
878 }; | |
879 | |
880 | |
881 // Interface to java.lang.AssertionStatusDirectives objects | |
882 | |
883 class java_lang_AssertionStatusDirectives: AllStatic { | |
884 private: | |
885 enum { | |
886 hc_classes_offset, | |
887 hc_classEnabled_offset, | |
888 hc_packages_offset, | |
889 hc_packageEnabled_offset, | |
890 hc_deflt_offset | |
891 }; | |
892 | |
893 static int classes_offset; | |
894 static int classEnabled_offset; | |
895 static int packages_offset; | |
896 static int packageEnabled_offset; | |
897 static int deflt_offset; | |
898 | |
899 public: | |
900 // Setters | |
901 static void set_classes(oop obj, oop val); | |
902 static void set_classEnabled(oop obj, oop val); | |
903 static void set_packages(oop obj, oop val); | |
904 static void set_packageEnabled(oop obj, oop val); | |
905 static void set_deflt(oop obj, bool val); | |
906 // Debugging | |
907 friend class JavaClasses; | |
908 }; | |
909 | |
910 | |
911 class java_nio_Buffer: AllStatic { | |
912 private: | |
913 static int _limit_offset; | |
914 | |
915 public: | |
916 static int limit_offset(); | |
917 static void compute_offsets(); | |
918 }; | |
919 | |
920 class sun_misc_AtomicLongCSImpl: AllStatic { | |
921 private: | |
922 static int _value_offset; | |
923 | |
924 public: | |
925 static int value_offset(); | |
926 static void compute_offsets(); | |
927 }; | |
928 | |
929 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
930 private: | |
931 static int _owner_offset; | |
932 public: | |
933 static void initialize(TRAPS); | |
934 static oop get_owner_threadObj(oop obj); | |
935 }; | |
936 | |
937 // Interface to hard-coded offset checking | |
938 | |
939 class JavaClasses : AllStatic { | |
940 private: | |
941 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
942 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
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943 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
0 | 944 public: |
945 static void compute_hard_coded_offsets(); | |
946 static void compute_offsets(); | |
947 static void check_offsets() PRODUCT_RETURN; | |
948 }; |