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--- old/src/share/vm/classfile/javaClasses.hpp
+++ new/src/share/vm/classfile/javaClasses.hpp
1 1 /*
2 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
27 27
28 28 #include "classfile/systemDictionary.hpp"
29 29 #include "jvmtifiles/jvmti.h"
30 30 #include "oops/oop.hpp"
31 31 #include "runtime/os.hpp"
32 32 #include "utilities/utf8.hpp"
33 33
34 34 // Interface for manipulating the basic Java classes.
35 35 //
36 36 // All dependencies on layout of actual Java classes should be kept here.
37 37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 38 //
39 39 // For most classes we hardwire the offsets for performance reasons. In certain
40 40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 42 //
43 43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 44 // on a per class basis. The offsets below have to reflect this ordering.
45 45 //
46 46 // When editing the layouts please update the check_offset verification code
47 47 // correspondingly. The names in the enums must be identical to the actual field
48 48 // names in order for the verification code to work.
49 49
50 50
51 51 // Interface to java.lang.String objects
52 52
53 53 class java_lang_String : AllStatic {
54 54 private:
55 55 enum {
56 56 hc_value_offset = 0,
57 57 hc_offset_offset = 1
58 58 //hc_count_offset = 2 -- not a word-scaled offset
59 59 //hc_hash_offset = 3 -- not a word-scaled offset
60 60 };
61 61
62 62 static int value_offset;
63 63 static int offset_offset;
64 64 static int count_offset;
65 65 static int hash_offset;
66 66
67 67 static Handle basic_create(int length, bool tenured, TRAPS);
68 68 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS);
69 69
70 70 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); }
71 71 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); }
72 72 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); }
73 73
74 74 public:
75 75 // Instance creation
76 76 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
77 77 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS);
78 78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
79 79 static Handle create_from_str(const char* utf8_str, TRAPS);
80 80 static oop create_oop_from_str(const char* utf8_str, TRAPS);
81 81 static Handle create_from_symbol(Symbol* symbol, TRAPS);
82 82 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
83 83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
84 84
85 85 static int value_offset_in_bytes() { return value_offset; }
86 86 static int count_offset_in_bytes() { return count_offset; }
87 87 static int offset_offset_in_bytes() { return offset_offset; }
88 88 static int hash_offset_in_bytes() { return hash_offset; }
89 89
90 90 // Accessors
91 91 static typeArrayOop value(oop java_string) {
92 92 assert(is_instance(java_string), "must be java_string");
93 93 return (typeArrayOop) java_string->obj_field(value_offset);
94 94 }
95 95 static int offset(oop java_string) {
96 96 assert(is_instance(java_string), "must be java_string");
97 97 return java_string->int_field(offset_offset);
98 98 }
99 99 static int length(oop java_string) {
100 100 assert(is_instance(java_string), "must be java_string");
101 101 return java_string->int_field(count_offset);
102 102 }
103 103 static int utf8_length(oop java_string);
104 104
105 105 // String converters
106 106 static char* as_utf8_string(oop java_string);
107 107 static char* as_utf8_string(oop java_string, char* buf, int buflen);
108 108 static char* as_utf8_string(oop java_string, int start, int len);
109 109 static char* as_platform_dependent_str(Handle java_string, TRAPS);
110 110 static jchar* as_unicode_string(oop java_string, int& length);
111 111
112 112 // Compute the hash value for a java.lang.String object which would
113 113 // contain the characters passed in. This hash value is used for at
114 114 // least two purposes.
115 115 //
116 116 // (a) As the hash value used by the StringTable for bucket selection
117 117 // and comparison (stored in the HashtableEntry structures). This
118 118 // is used in the String.intern() method.
119 119 //
120 120 // (b) As the hash value used by the String object itself, in
121 121 // String.hashCode(). This value is normally calculate in Java code
122 122 // in the String.hashCode method(), but is precomputed for String
123 123 // objects in the shared archive file.
124 124 //
125 125 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
126 126 static unsigned int hash_string(jchar* s, int len) {
127 127 unsigned int h = 0;
128 128 while (len-- > 0) {
129 129 h = 31*h + (unsigned int) *s;
130 130 s++;
131 131 }
132 132 return h;
133 133 }
134 134 static unsigned int hash_string(oop java_string);
135 135
136 136 static bool equals(oop java_string, jchar* chars, int len);
137 137
138 138 // Conversion between '.' and '/' formats
139 139 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
140 140 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
141 141
142 142 // Conversion
143 143 static Symbol* as_symbol(Handle java_string, TRAPS);
144 144 static Symbol* as_symbol_or_null(oop java_string);
145 145
146 146 // Testers
147 147 static bool is_instance(oop obj) {
148 148 return obj != NULL && obj->klass() == SystemDictionary::String_klass();
149 149 }
150 150
151 151 // Debugging
152 152 static void print(Handle java_string, outputStream* st);
153 153 friend class JavaClasses;
154 154 };
155 155
156 156
157 157 // Interface to java.lang.Class objects
158 158
159 159 class java_lang_Class : AllStatic {
160 160 friend class VMStructs;
161 161 private:
162 162 // The fake offsets are added by the class loader when java.lang.Class is loaded
163 163
164 164 enum {
165 165 hc_number_of_fake_oop_fields = 3,
166 166 hc_number_of_fake_int_fields = 2
167 167 };
168 168
169 169 static int klass_offset;
170 170 static int resolved_constructor_offset;
171 171 static int array_klass_offset;
172 172 static int number_of_fake_oop_fields;
173 173
174 174 static int oop_size_offset;
175 175 static int static_oop_field_count_offset;
176 176
177 177 static void compute_offsets();
178 178 static bool offsets_computed;
179 179 static int classRedefinedCount_offset;
180 180 static int parallelCapable_offset;
181 181
182 182 public:
183 183 // Instance creation
184 184 static oop create_mirror(KlassHandle k, TRAPS);
185 185 static void fixup_mirror(KlassHandle k, TRAPS);
186 186 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
187 187 // Conversion
188 188 static klassOop as_klassOop(oop java_class);
189 189 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL);
190 190 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
191 191 klassOop refk_oop = NULL;
192 192 BasicType result = as_BasicType(java_class, &refk_oop);
193 193 (*reference_klass) = KlassHandle(refk_oop);
194 194 return result;
195 195 }
196 196 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
197 197 static void print_signature(oop java_class, outputStream *st);
198 198 // Testing
199 199 static bool is_instance(oop obj) {
200 200 return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
201 201 }
202 202 static bool is_primitive(oop java_class);
203 203 static BasicType primitive_type(oop java_class);
204 204 static oop primitive_mirror(BasicType t);
205 205 // JVM_NewInstance support
206 206 static methodOop resolved_constructor(oop java_class);
207 207 static void set_resolved_constructor(oop java_class, methodOop constructor);
208 208 // JVM_NewArray support
209 209 static klassOop array_klass(oop java_class);
210 210 static void set_array_klass(oop java_class, klassOop klass);
211 211 // compiler support for class operations
212 212 static int klass_offset_in_bytes() { return klass_offset; }
213 213 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; }
214 214 static int array_klass_offset_in_bytes() { return array_klass_offset; }
215 215 // Support for classRedefinedCount field
216 216 static int classRedefinedCount(oop the_class_mirror);
217 217 static void set_classRedefinedCount(oop the_class_mirror, int value);
218 218 // Support for parallelCapable field
219 219 static bool parallelCapable(oop the_class_mirror);
220 220
221 221 static int oop_size(oop java_class);
222 222 static void set_oop_size(oop java_class, int size);
223 223 static int static_oop_field_count(oop java_class);
224 224 static void set_static_oop_field_count(oop java_class, int size);
225 225
226 226 // Debugging
227 227 friend class JavaClasses;
228 228 friend class instanceKlass; // verification code accesses offsets
229 229 friend class ClassFileParser; // access to number_of_fake_fields
230 230 };
231 231
232 232 // Interface to java.lang.Thread objects
233 233
234 234 class java_lang_Thread : AllStatic {
235 235 private:
236 236 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
237 237 // so we compute the offsets at startup rather than hard-wiring them.
238 238 static int _name_offset;
239 239 static int _group_offset;
240 240 static int _contextClassLoader_offset;
241 241 static int _inheritedAccessControlContext_offset;
242 242 static int _priority_offset;
243 243 static int _eetop_offset;
244 244 static int _daemon_offset;
245 245 static int _stillborn_offset;
246 246 static int _stackSize_offset;
247 247 static int _tid_offset;
248 248 static int _thread_status_offset;
249 249 static int _park_blocker_offset;
250 250 static int _park_event_offset ;
251 251
252 252 static void compute_offsets();
253 253
254 254 public:
255 255 // Instance creation
256 256 static oop create();
257 257 // Returns the JavaThread associated with the thread obj
258 258 static JavaThread* thread(oop java_thread);
259 259 // Set JavaThread for instance
260 260 static void set_thread(oop java_thread, JavaThread* thread);
261 261 // Name
262 262 static typeArrayOop name(oop java_thread);
263 263 static void set_name(oop java_thread, typeArrayOop name);
264 264 // Priority
265 265 static ThreadPriority priority(oop java_thread);
266 266 static void set_priority(oop java_thread, ThreadPriority priority);
267 267 // Thread group
268 268 static oop threadGroup(oop java_thread);
269 269 // Stillborn
270 270 static bool is_stillborn(oop java_thread);
271 271 static void set_stillborn(oop java_thread);
272 272 // Alive (NOTE: this is not really a field, but provides the correct
273 273 // definition without doing a Java call)
274 274 static bool is_alive(oop java_thread);
275 275 // Daemon
276 276 static bool is_daemon(oop java_thread);
277 277 static void set_daemon(oop java_thread);
278 278 // Context ClassLoader
279 279 static oop context_class_loader(oop java_thread);
280 280 // Control context
281 281 static oop inherited_access_control_context(oop java_thread);
282 282 // Stack size hint
283 283 static jlong stackSize(oop java_thread);
284 284 // Thread ID
285 285 static jlong thread_id(oop java_thread);
286 286
287 287 // Blocker object responsible for thread parking
288 288 static oop park_blocker(oop java_thread);
289 289
290 290 // Pointer to type-stable park handler, encoded as jlong.
291 291 // Should be set when apparently null
292 292 // For details, see unsafe.cpp Unsafe_Unpark
293 293 static jlong park_event(oop java_thread);
294 294 static bool set_park_event(oop java_thread, jlong ptr);
295 295
296 296 // Java Thread Status for JVMTI and M&M use.
297 297 // This thread status info is saved in threadStatus field of
298 298 // java.lang.Thread java class.
299 299 enum ThreadStatus {
300 300 NEW = 0,
301 301 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
302 302 JVMTI_THREAD_STATE_RUNNABLE,
303 303 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
304 304 JVMTI_THREAD_STATE_WAITING +
305 305 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
306 306 JVMTI_THREAD_STATE_SLEEPING,
307 307 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
308 308 JVMTI_THREAD_STATE_WAITING +
309 309 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
310 310 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
311 311 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
312 312 JVMTI_THREAD_STATE_WAITING +
313 313 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
314 314 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
315 315 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
316 316 JVMTI_THREAD_STATE_WAITING +
317 317 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
318 318 JVMTI_THREAD_STATE_PARKED,
319 319 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
320 320 JVMTI_THREAD_STATE_WAITING +
321 321 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
322 322 JVMTI_THREAD_STATE_PARKED,
323 323 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
324 324 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
325 325 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
326 326 };
327 327 // Write thread status info to threadStatus field of java.lang.Thread.
328 328 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
329 329 // Read thread status info from threadStatus field of java.lang.Thread.
330 330 static ThreadStatus get_thread_status(oop java_thread_oop);
331 331
332 332 static const char* thread_status_name(oop java_thread_oop);
333 333
334 334 // Debugging
335 335 friend class JavaClasses;
336 336 };
337 337
338 338 // Interface to java.lang.ThreadGroup objects
339 339
340 340 class java_lang_ThreadGroup : AllStatic {
341 341 private:
342 342 static int _parent_offset;
343 343 static int _name_offset;
344 344 static int _threads_offset;
345 345 static int _groups_offset;
346 346 static int _maxPriority_offset;
347 347 static int _destroyed_offset;
348 348 static int _daemon_offset;
349 349 static int _vmAllowSuspension_offset;
350 350 static int _nthreads_offset;
351 351 static int _ngroups_offset;
352 352
353 353 static void compute_offsets();
354 354
355 355 public:
356 356 // parent ThreadGroup
357 357 static oop parent(oop java_thread_group);
358 358 // name
359 359 static typeArrayOop name(oop java_thread_group);
360 360 // ("name as oop" accessor is not necessary)
361 361 // Number of threads in group
362 362 static int nthreads(oop java_thread_group);
363 363 // threads
364 364 static objArrayOop threads(oop java_thread_group);
365 365 // Number of threads in group
366 366 static int ngroups(oop java_thread_group);
367 367 // groups
368 368 static objArrayOop groups(oop java_thread_group);
369 369 // maxPriority in group
370 370 static ThreadPriority maxPriority(oop java_thread_group);
371 371 // Destroyed
372 372 static bool is_destroyed(oop java_thread_group);
373 373 // Daemon
374 374 static bool is_daemon(oop java_thread_group);
375 375 // vmAllowSuspension
376 376 static bool is_vmAllowSuspension(oop java_thread_group);
377 377 // Debugging
378 378 friend class JavaClasses;
379 379 };
380 380
381 381
382 382
383 383 // Interface to java.lang.Throwable objects
384 384
385 385 class java_lang_Throwable: AllStatic {
386 386 friend class BacktraceBuilder;
387 387
388 388 private:
389 389 // Offsets
390 390 enum {
391 391 hc_backtrace_offset = 0,
392 392 hc_detailMessage_offset = 1,
393 393 hc_cause_offset = 2, // New since 1.4
394 394 hc_stackTrace_offset = 3 // New since 1.4
395 395 };
396 396 enum {
397 397 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
398 398 };
399 399 // Trace constants
400 400 enum {
401 401 trace_methods_offset = 0,
402 402 trace_bcis_offset = 1,
403 403 trace_next_offset = 2,
404 404 trace_size = 3,
405 405 trace_chunk_size = 32
406 406 };
407 407
408 408 static int backtrace_offset;
409 409 static int detailMessage_offset;
410 410 static int cause_offset;
411 411 static int stackTrace_offset;
412 412 static int static_unassigned_stacktrace_offset;
413 413
414 414 // Printing
415 415 static char* print_stack_element_to_buffer(methodOop method, int bci);
416 416 static void print_to_stream(Handle stream, const char* str);
417 417 // StackTrace (programmatic access, new since 1.4)
418 418 static void clear_stacktrace(oop throwable);
419 419 // No stack trace available
420 420 static const char* no_stack_trace_message();
421 421 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
422 422 static void set_stacktrace(oop throwable, oop st_element_array);
423 423 static oop unassigned_stacktrace();
424 424
425 425 public:
426 426 // Backtrace
427 427 static oop backtrace(oop throwable);
428 428 static void set_backtrace(oop throwable, oop value);
429 429 // Needed by JVMTI to filter out this internal field.
430 430 static int get_backtrace_offset() { return backtrace_offset;}
431 431 static int get_detailMessage_offset() { return detailMessage_offset;}
432 432 // Message
433 433 static oop message(oop throwable);
434 434 static oop message(Handle throwable);
435 435 static void set_message(oop throwable, oop value);
436 436 // Print stack trace stored in exception by call-back to Java
437 437 // Note: this is no longer used in Merlin, but we still suppport
438 438 // it for compatibility.
439 439 static void print_stack_trace(oop throwable, oop print_stream);
440 440 static void print_stack_element(Handle stream, methodOop method, int bci);
441 441 static void print_stack_element(outputStream *st, methodOop method, int bci);
442 442 static void print_stack_usage(Handle stream);
443 443
444 444 // Allocate space for backtrace (created but stack trace not filled in)
445 445 static void allocate_backtrace(Handle throwable, TRAPS);
446 446 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
447 447 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
448 448 // Fill in current stack trace, can cause GC
449 449 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
450 450 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
451 451 // Programmatic access to stack trace
452 452 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
453 453 static int get_stack_trace_depth(oop throwable, TRAPS);
454 454 // Printing
455 455 static void print(oop throwable, outputStream* st);
456 456 static void print(Handle throwable, outputStream* st);
457 457 static void print_stack_trace(oop throwable, outputStream* st);
458 458 // Debugging
459 459 friend class JavaClasses;
460 460 };
461 461
462 462
463 463 // Interface to java.lang.reflect.AccessibleObject objects
464 464
465 465 class java_lang_reflect_AccessibleObject: AllStatic {
466 466 private:
467 467 // Note that to reduce dependencies on the JDK we compute these
468 468 // offsets at run-time.
469 469 static int override_offset;
470 470
471 471 static void compute_offsets();
472 472
473 473 public:
474 474 // Accessors
475 475 static jboolean override(oop reflect);
476 476 static void set_override(oop reflect, jboolean value);
477 477
478 478 // Debugging
479 479 friend class JavaClasses;
480 480 };
481 481
482 482
483 483 // Interface to java.lang.reflect.Method objects
484 484
485 485 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
486 486 private:
487 487 // Note that to reduce dependencies on the JDK we compute these
488 488 // offsets at run-time.
489 489 static int clazz_offset;
490 490 static int name_offset;
491 491 static int returnType_offset;
492 492 static int parameterTypes_offset;
493 493 static int exceptionTypes_offset;
494 494 static int slot_offset;
495 495 static int modifiers_offset;
496 496 static int signature_offset;
497 497 static int annotations_offset;
498 498 static int parameter_annotations_offset;
499 499 static int annotation_default_offset;
500 500
501 501 static void compute_offsets();
502 502
503 503 public:
504 504 // Allocation
505 505 static Handle create(TRAPS);
506 506
507 507 // Accessors
508 508 static oop clazz(oop reflect);
509 509 static void set_clazz(oop reflect, oop value);
510 510
511 511 static oop name(oop method);
512 512 static void set_name(oop method, oop value);
513 513
514 514 static oop return_type(oop method);
515 515 static void set_return_type(oop method, oop value);
516 516
517 517 static oop parameter_types(oop method);
518 518 static void set_parameter_types(oop method, oop value);
519 519
520 520 static oop exception_types(oop method);
521 521 static void set_exception_types(oop method, oop value);
522 522
523 523 static int slot(oop reflect);
524 524 static void set_slot(oop reflect, int value);
525 525
526 526 static int modifiers(oop method);
527 527 static void set_modifiers(oop method, int value);
528 528
529 529 static bool has_signature_field();
530 530 static oop signature(oop method);
531 531 static void set_signature(oop method, oop value);
532 532
533 533 static bool has_annotations_field();
534 534 static oop annotations(oop method);
535 535 static void set_annotations(oop method, oop value);
536 536
537 537 static bool has_parameter_annotations_field();
538 538 static oop parameter_annotations(oop method);
539 539 static void set_parameter_annotations(oop method, oop value);
540 540
541 541 static bool has_annotation_default_field();
542 542 static oop annotation_default(oop method);
543 543 static void set_annotation_default(oop method, oop value);
544 544
545 545 // Debugging
546 546 friend class JavaClasses;
547 547 };
548 548
549 549
550 550 // Interface to java.lang.reflect.Constructor objects
551 551
552 552 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
553 553 private:
554 554 // Note that to reduce dependencies on the JDK we compute these
555 555 // offsets at run-time.
556 556 static int clazz_offset;
557 557 static int parameterTypes_offset;
558 558 static int exceptionTypes_offset;
559 559 static int slot_offset;
560 560 static int modifiers_offset;
561 561 static int signature_offset;
562 562 static int annotations_offset;
563 563 static int parameter_annotations_offset;
564 564
565 565 static void compute_offsets();
566 566
567 567 public:
568 568 // Allocation
569 569 static Handle create(TRAPS);
570 570
571 571 // Accessors
572 572 static oop clazz(oop reflect);
573 573 static void set_clazz(oop reflect, oop value);
574 574
575 575 static oop parameter_types(oop constructor);
576 576 static void set_parameter_types(oop constructor, oop value);
577 577
578 578 static oop exception_types(oop constructor);
579 579 static void set_exception_types(oop constructor, oop value);
580 580
581 581 static int slot(oop reflect);
582 582 static void set_slot(oop reflect, int value);
583 583
584 584 static int modifiers(oop constructor);
585 585 static void set_modifiers(oop constructor, int value);
586 586
587 587 static bool has_signature_field();
588 588 static oop signature(oop constructor);
589 589 static void set_signature(oop constructor, oop value);
590 590
591 591 static bool has_annotations_field();
592 592 static oop annotations(oop constructor);
593 593 static void set_annotations(oop constructor, oop value);
594 594
595 595 static bool has_parameter_annotations_field();
596 596 static oop parameter_annotations(oop method);
597 597 static void set_parameter_annotations(oop method, oop value);
598 598
599 599 // Debugging
600 600 friend class JavaClasses;
601 601 };
602 602
603 603
604 604 // Interface to java.lang.reflect.Field objects
605 605
606 606 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
607 607 private:
608 608 // Note that to reduce dependencies on the JDK we compute these
609 609 // offsets at run-time.
610 610 static int clazz_offset;
611 611 static int name_offset;
612 612 static int type_offset;
613 613 static int slot_offset;
614 614 static int modifiers_offset;
615 615 static int signature_offset;
616 616 static int annotations_offset;
617 617
618 618 static void compute_offsets();
619 619
620 620 public:
621 621 // Allocation
622 622 static Handle create(TRAPS);
623 623
624 624 // Accessors
625 625 static oop clazz(oop reflect);
626 626 static void set_clazz(oop reflect, oop value);
627 627
628 628 static oop name(oop field);
629 629 static void set_name(oop field, oop value);
630 630
631 631 static oop type(oop field);
632 632 static void set_type(oop field, oop value);
633 633
634 634 static int slot(oop reflect);
635 635 static void set_slot(oop reflect, int value);
636 636
637 637 static int modifiers(oop field);
638 638 static void set_modifiers(oop field, int value);
639 639
640 640 static bool has_signature_field();
641 641 static oop signature(oop constructor);
642 642 static void set_signature(oop constructor, oop value);
643 643
644 644 static bool has_annotations_field();
645 645 static oop annotations(oop constructor);
646 646 static void set_annotations(oop constructor, oop value);
647 647
648 648 static bool has_parameter_annotations_field();
649 649 static oop parameter_annotations(oop method);
650 650 static void set_parameter_annotations(oop method, oop value);
651 651
652 652 static bool has_annotation_default_field();
653 653 static oop annotation_default(oop method);
654 654 static void set_annotation_default(oop method, oop value);
655 655
656 656 // Debugging
657 657 friend class JavaClasses;
658 658 };
659 659
660 660 // Interface to sun.reflect.ConstantPool objects
661 661 class sun_reflect_ConstantPool {
662 662 private:
663 663 // Note that to reduce dependencies on the JDK we compute these
664 664 // offsets at run-time.
665 665 static int _cp_oop_offset;
666 666
667 667 static void compute_offsets();
668 668
669 669 public:
670 670 // Allocation
671 671 static Handle create(TRAPS);
672 672
673 673 // Accessors
674 674 static oop cp_oop(oop reflect);
675 675 static void set_cp_oop(oop reflect, oop value);
676 676 static int cp_oop_offset() {
677 677 return _cp_oop_offset;
678 678 }
679 679
680 680 // Debugging
681 681 friend class JavaClasses;
682 682 };
683 683
684 684 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
685 685 class sun_reflect_UnsafeStaticFieldAccessorImpl {
686 686 private:
687 687 static int _base_offset;
688 688 static void compute_offsets();
689 689
690 690 public:
691 691 static int base_offset() {
692 692 return _base_offset;
693 693 }
694 694
695 695 // Debugging
696 696 friend class JavaClasses;
697 697 };
698 698
699 699 // Interface to java.lang primitive type boxing objects:
700 700 // - java.lang.Boolean
701 701 // - java.lang.Character
702 702 // - java.lang.Float
703 703 // - java.lang.Double
704 704 // - java.lang.Byte
705 705 // - java.lang.Short
706 706 // - java.lang.Integer
707 707 // - java.lang.Long
708 708
709 709 // This could be separated out into 8 individual classes.
710 710
711 711 class java_lang_boxing_object: AllStatic {
712 712 private:
713 713 enum {
714 714 hc_value_offset = 0
715 715 };
716 716 static int value_offset;
717 717 static int long_value_offset;
718 718
719 719 static oop initialize_and_allocate(BasicType type, TRAPS);
720 720 public:
721 721 // Allocation. Returns a boxed value, or NULL for invalid type.
722 722 static oop create(BasicType type, jvalue* value, TRAPS);
723 723 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
724 724 static BasicType get_value(oop box, jvalue* value);
725 725 static BasicType set_value(oop box, jvalue* value);
726 726 static BasicType basic_type(oop box);
727 727 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
728 728 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
729 729 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
730 730 static void print(BasicType type, jvalue* value, outputStream* st);
731 731
732 732 static int value_offset_in_bytes(BasicType type) {
733 733 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
734 734 value_offset;
735 735 }
736 736
737 737 // Debugging
738 738 friend class JavaClasses;
739 739 };
740 740
741 741
742 742
743 743 // Interface to java.lang.ref.Reference objects
744 744
745 745 class java_lang_ref_Reference: AllStatic {
746 746 public:
747 747 enum {
748 748 hc_referent_offset = 0,
749 749 hc_queue_offset = 1,
750 750 hc_next_offset = 2,
751 751 hc_discovered_offset = 3 // Is not last, see SoftRefs.
752 752 };
753 753 enum {
754 754 hc_static_lock_offset = 0,
755 755 hc_static_pending_offset = 1
756 756 };
757 757
758 758 static int referent_offset;
759 759 static int queue_offset;
760 760 static int next_offset;
761 761 static int discovered_offset;
762 762 static int static_lock_offset;
763 763 static int static_pending_offset;
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764 764 static int number_of_fake_oop_fields;
765 765
766 766 // Accessors
767 767 static oop referent(oop ref) {
768 768 return ref->obj_field(referent_offset);
769 769 }
770 770 static void set_referent(oop ref, oop value) {
771 771 ref->obj_field_put(referent_offset, value);
772 772 }
773 773 static void set_referent_raw(oop ref, oop value) {
774 - ref->obj_field_raw_put(referent_offset, value);
774 + ref->obj_field_put_raw(referent_offset, value);
775 775 }
776 776 static HeapWord* referent_addr(oop ref) {
777 777 return ref->obj_field_addr<HeapWord>(referent_offset);
778 778 }
779 779 static oop next(oop ref) {
780 780 return ref->obj_field(next_offset);
781 781 }
782 782 static void set_next(oop ref, oop value) {
783 783 ref->obj_field_put(next_offset, value);
784 784 }
785 785 static void set_next_raw(oop ref, oop value) {
786 - ref->obj_field_raw_put(next_offset, value);
786 + ref->obj_field_put_raw(next_offset, value);
787 787 }
788 788 static HeapWord* next_addr(oop ref) {
789 789 return ref->obj_field_addr<HeapWord>(next_offset);
790 790 }
791 791 static oop discovered(oop ref) {
792 792 return ref->obj_field(discovered_offset);
793 793 }
794 794 static void set_discovered(oop ref, oop value) {
795 795 ref->obj_field_put(discovered_offset, value);
796 796 }
797 797 static void set_discovered_raw(oop ref, oop value) {
798 - ref->obj_field_raw_put(discovered_offset, value);
798 + ref->obj_field_put_raw(discovered_offset, value);
799 799 }
800 800 static HeapWord* discovered_addr(oop ref) {
801 801 return ref->obj_field_addr<HeapWord>(discovered_offset);
802 802 }
803 803 // Accessors for statics
804 804 static oop pending_list_lock();
805 805 static oop pending_list();
806 806
807 807 static HeapWord* pending_list_addr();
808 808 };
809 809
810 810
811 811 // Interface to java.lang.ref.SoftReference objects
812 812
813 813 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
814 814 public:
815 815 enum {
816 816 // The timestamp is a long field and may need to be adjusted for alignment.
817 817 hc_timestamp_offset = hc_discovered_offset + 1
818 818 };
819 819 enum {
820 820 hc_static_clock_offset = 0
821 821 };
822 822
823 823 static int timestamp_offset;
824 824 static int static_clock_offset;
825 825
826 826 // Accessors
827 827 static jlong timestamp(oop ref);
828 828
829 829 // Accessors for statics
830 830 static jlong clock();
831 831 static void set_clock(jlong value);
832 832 };
833 833
834 834
835 835 // Interface to java.lang.invoke.MethodHandle objects
836 836
837 837 class MethodHandleEntry;
838 838
839 839 class java_lang_invoke_MethodHandle: AllStatic {
840 840 friend class JavaClasses;
841 841
842 842 private:
843 843 static int _vmentry_offset; // assembly code trampoline for MH
844 844 static int _vmtarget_offset; // class-specific target reference
845 845 static int _type_offset; // the MethodType of this MH
846 846 static int _vmslots_offset; // OPTIONAL hoisted type.form.vmslots
847 847
848 848 static void compute_offsets();
849 849
850 850 public:
851 851 // Accessors
852 852 static oop type(oop mh);
853 853 static void set_type(oop mh, oop mtype);
854 854
855 855 static oop vmtarget(oop mh);
856 856 static void set_vmtarget(oop mh, oop target);
857 857
858 858 static MethodHandleEntry* vmentry(oop mh);
859 859 static void set_vmentry(oop mh, MethodHandleEntry* data);
860 860
861 861 static int vmslots(oop mh);
862 862 static void init_vmslots(oop mh);
863 863 static int compute_vmslots(oop mh);
864 864
865 865 // Testers
866 866 static bool is_subclass(klassOop klass) {
867 867 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass());
868 868 }
869 869 static bool is_instance(oop obj) {
870 870 return obj != NULL && is_subclass(obj->klass());
871 871 }
872 872
873 873 // Accessors for code generation:
874 874 static int type_offset_in_bytes() { return _type_offset; }
875 875 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
876 876 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
877 877 static int vmslots_offset_in_bytes() { return _vmslots_offset; }
878 878 };
879 879
880 880 class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle {
881 881 friend class JavaClasses;
882 882
883 883 private:
884 884 // _vmtarget_offset; // method or class or interface
885 885 static int _vmindex_offset; // negative or vtable idx or itable idx
886 886 static void compute_offsets();
887 887
888 888 public:
889 889 // Accessors
890 890 static int vmindex(oop mh);
891 891 static void set_vmindex(oop mh, int index);
892 892
893 893 // Testers
894 894 static bool is_subclass(klassOop klass) {
895 895 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
896 896 }
897 897 static bool is_instance(oop obj) {
898 898 return obj != NULL && is_subclass(obj->klass());
899 899 }
900 900
901 901 // Accessors for code generation:
902 902 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
903 903 };
904 904
905 905 class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle {
906 906 friend class JavaClasses;
907 907
908 908 private:
909 909 static int _argument_offset; // argument value bound into this MH
910 910 static int _vmargslot_offset; // relevant argument slot (<= vmslots)
911 911 static void compute_offsets();
912 912
913 913 public:
914 914 static oop argument(oop mh);
915 915 static void set_argument(oop mh, oop ref);
916 916
917 917 static jint vmargslot(oop mh);
918 918 static void set_vmargslot(oop mh, jint slot);
919 919
920 920 // Testers
921 921 static bool is_subclass(klassOop klass) {
922 922 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass());
923 923 }
924 924 static bool is_instance(oop obj) {
925 925 return obj != NULL && is_subclass(obj->klass());
926 926 }
927 927
928 928 static int argument_offset_in_bytes() { return _argument_offset; }
929 929 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; }
930 930 };
931 931
932 932 class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle {
933 933 friend class JavaClasses;
934 934
935 935 private:
936 936 static int _conversion_offset; // type of conversion to apply
937 937 static void compute_offsets();
938 938
939 939 public:
940 940 static int conversion(oop mh);
941 941 static void set_conversion(oop mh, int conv);
942 942
943 943 // Testers
944 944 static bool is_subclass(klassOop klass) {
945 945 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass());
946 946 }
947 947 static bool is_instance(oop obj) {
948 948 return obj != NULL && is_subclass(obj->klass());
949 949 }
950 950
951 951 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
952 952 enum {
953 953 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype
954 954 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T)
955 955 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument
956 956 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another
957 957 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive
958 958 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper
959 959 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg)
960 960 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg)
961 961 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS)
962 962 OP_DROP_ARGS = 0x9, // remove one or more argument slots
963 963 OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function
964 964 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size)
965 965 OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result
966 966 //OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists
967 967 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration
968 968
969 969 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field
970 970 CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below
971 971 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use
972 972 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK
973 973 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK
974 974 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed)
975 975 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed)
976 976 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change
977 977 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1
978 978 };
979 979
980 980 static int conversion_offset_in_bytes() { return _conversion_offset; }
981 981 };
982 982
983 983
984 984 // A simple class that maintains an invocation count
985 985 class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle {
986 986 friend class JavaClasses;
987 987
988 988 private:
989 989 static int _vmcount_offset;
990 990 static void compute_offsets();
991 991
992 992 public:
993 993 // Accessors
994 994 static int vmcount(oop mh);
995 995 static void set_vmcount(oop mh, int count);
996 996
997 997 // Testers
998 998 static bool is_subclass(klassOop klass) {
999 999 return SystemDictionary::CountingMethodHandle_klass() != NULL &&
1000 1000 Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass());
1001 1001 }
1002 1002 static bool is_instance(oop obj) {
1003 1003 return obj != NULL && is_subclass(obj->klass());
1004 1004 }
1005 1005
1006 1006 // Accessors for code generation:
1007 1007 static int vmcount_offset_in_bytes() { return _vmcount_offset; }
1008 1008 };
1009 1009
1010 1010
1011 1011
1012 1012 // Interface to java.lang.invoke.MemberName objects
1013 1013 // (These are a private interface for Java code to query the class hierarchy.)
1014 1014
1015 1015 class java_lang_invoke_MemberName: AllStatic {
1016 1016 friend class JavaClasses;
1017 1017
1018 1018 private:
1019 1019 // From java.lang.invoke.MemberName:
1020 1020 // private Class<?> clazz; // class in which the method is defined
1021 1021 // private String name; // may be null if not yet materialized
1022 1022 // private Object type; // may be null if not yet materialized
1023 1023 // private int flags; // modifier bits; see reflect.Modifier
1024 1024 // private Object vmtarget; // VM-specific target value
1025 1025 // private int vmindex; // method index within class or interface
1026 1026 static int _clazz_offset;
1027 1027 static int _name_offset;
1028 1028 static int _type_offset;
1029 1029 static int _flags_offset;
1030 1030 static int _vmtarget_offset;
1031 1031 static int _vmindex_offset;
1032 1032
1033 1033 static void compute_offsets();
1034 1034
1035 1035 public:
1036 1036 // Accessors
1037 1037 static oop clazz(oop mname);
1038 1038 static void set_clazz(oop mname, oop clazz);
1039 1039
1040 1040 static oop type(oop mname);
1041 1041 static void set_type(oop mname, oop type);
1042 1042
1043 1043 static oop name(oop mname);
1044 1044 static void set_name(oop mname, oop name);
1045 1045
1046 1046 static int flags(oop mname);
1047 1047 static void set_flags(oop mname, int flags);
1048 1048
1049 1049 static int modifiers(oop mname) { return (u2) flags(mname); }
1050 1050 static void set_modifiers(oop mname, int mods)
1051 1051 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); }
1052 1052
1053 1053 static oop vmtarget(oop mname);
1054 1054 static void set_vmtarget(oop mname, oop target);
1055 1055
1056 1056 static int vmindex(oop mname);
1057 1057 static void set_vmindex(oop mname, int index);
1058 1058
1059 1059 // Testers
1060 1060 static bool is_subclass(klassOop klass) {
1061 1061 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass());
1062 1062 }
1063 1063 static bool is_instance(oop obj) {
1064 1064 return obj != NULL && is_subclass(obj->klass());
1065 1065 }
1066 1066
1067 1067 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1068 1068 enum {
1069 1069 MN_IS_METHOD = 0x00010000, // method (not constructor)
1070 1070 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1071 1071 MN_IS_FIELD = 0x00040000, // field
1072 1072 MN_IS_TYPE = 0x00080000, // nested type
1073 1073 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers
1074 1074 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers
1075 1075 VM_INDEX_UNINITIALIZED = -99
1076 1076 };
1077 1077
1078 1078 // Accessors for code generation:
1079 1079 static int clazz_offset_in_bytes() { return _clazz_offset; }
1080 1080 static int type_offset_in_bytes() { return _type_offset; }
1081 1081 static int name_offset_in_bytes() { return _name_offset; }
1082 1082 static int flags_offset_in_bytes() { return _flags_offset; }
1083 1083 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1084 1084 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1085 1085 };
1086 1086
1087 1087
1088 1088 // Interface to java.lang.invoke.MethodType objects
1089 1089
1090 1090 class java_lang_invoke_MethodType: AllStatic {
1091 1091 friend class JavaClasses;
1092 1092
1093 1093 private:
1094 1094 static int _rtype_offset;
1095 1095 static int _ptypes_offset;
1096 1096 static int _form_offset;
1097 1097
1098 1098 static void compute_offsets();
1099 1099
1100 1100 public:
1101 1101 // Accessors
1102 1102 static oop rtype(oop mt);
1103 1103 static objArrayOop ptypes(oop mt);
1104 1104 static oop form(oop mt);
1105 1105
1106 1106 static oop ptype(oop mt, int index);
1107 1107 static int ptype_count(oop mt);
1108 1108
1109 1109 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1110 1110 static void print_signature(oop mt, outputStream* st);
1111 1111
1112 1112 static bool is_instance(oop obj) {
1113 1113 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
1114 1114 }
1115 1115
1116 1116 static bool equals(oop mt1, oop mt2);
1117 1117
1118 1118 // Accessors for code generation:
1119 1119 static int rtype_offset_in_bytes() { return _rtype_offset; }
1120 1120 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1121 1121 static int form_offset_in_bytes() { return _form_offset; }
1122 1122 };
1123 1123
1124 1124 class java_lang_invoke_MethodTypeForm: AllStatic {
1125 1125 friend class JavaClasses;
1126 1126
1127 1127 private:
1128 1128 static int _vmslots_offset; // number of argument slots needed
1129 1129 static int _vmlayout_offset; // object describing internal calling sequence
1130 1130 static int _erasedType_offset; // erasedType = canonical MethodType
1131 1131 static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric
1132 1132
1133 1133 static void compute_offsets();
1134 1134
1135 1135 public:
1136 1136 // Accessors
1137 1137 static int vmslots(oop mtform);
1138 1138 static oop erasedType(oop mtform);
1139 1139 static oop genericInvoker(oop mtform);
1140 1140
1141 1141 static oop vmlayout(oop mtform);
1142 1142 static oop init_vmlayout(oop mtform, oop cookie);
1143 1143
1144 1144 // Accessors for code generation:
1145 1145 static int vmslots_offset_in_bytes() { return _vmslots_offset; }
1146 1146 static int vmlayout_offset_in_bytes() { return _vmlayout_offset; }
1147 1147 static int erasedType_offset_in_bytes() { return _erasedType_offset; }
1148 1148 static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; }
1149 1149 };
1150 1150
1151 1151
1152 1152 // Interface to java.lang.invoke.CallSite objects
1153 1153
1154 1154 class java_lang_invoke_CallSite: AllStatic {
1155 1155 friend class JavaClasses;
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1156 1156
1157 1157 private:
1158 1158 static int _target_offset;
1159 1159 static int _caller_method_offset;
1160 1160 static int _caller_bci_offset;
1161 1161
1162 1162 static void compute_offsets();
1163 1163
1164 1164 public:
1165 1165 // Accessors
1166 - static oop target(oop site);
1167 - static void set_target(oop site, oop target);
1166 + static oop target( oop site) { return site->obj_field( _target_offset); }
1167 + static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); }
1168 1168
1169 - static oop caller_method(oop site);
1170 - static void set_caller_method(oop site, oop ref);
1169 + static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); }
1170 + static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); }
1171 1171
1172 - static jint caller_bci(oop site);
1173 - static void set_caller_bci(oop site, jint bci);
1172 + static oop caller_method(oop site);
1173 + static void set_caller_method(oop site, oop ref);
1174 +
1175 + static jint caller_bci(oop site);
1176 + static void set_caller_bci(oop site, jint bci);
1174 1177
1175 1178 // Testers
1176 1179 static bool is_subclass(klassOop klass) {
1177 1180 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass());
1178 1181 }
1179 1182 static bool is_instance(oop obj) {
1180 1183 return obj != NULL && is_subclass(obj->klass());
1181 1184 }
1182 1185
1183 1186 // Accessors for code generation:
1184 1187 static int target_offset_in_bytes() { return _target_offset; }
1185 1188 static int caller_method_offset_in_bytes() { return _caller_method_offset; }
1186 1189 static int caller_bci_offset_in_bytes() { return _caller_bci_offset; }
1187 1190 };
1188 1191
1189 1192
1190 1193 // Interface to java.security.AccessControlContext objects
1191 1194
1192 1195 class java_security_AccessControlContext: AllStatic {
1193 1196 private:
1194 1197 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1195 1198 // so we compute the offsets at startup rather than hard-wiring them.
1196 1199 static int _context_offset;
1197 1200 static int _privilegedContext_offset;
1198 1201 static int _isPrivileged_offset;
1199 1202
1200 1203 static void compute_offsets();
1201 1204 public:
1202 1205 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1203 1206
1204 1207 // Debugging/initialization
1205 1208 friend class JavaClasses;
1206 1209 };
1207 1210
1208 1211
1209 1212 // Interface to java.lang.ClassLoader objects
1210 1213
1211 1214 class java_lang_ClassLoader : AllStatic {
1212 1215 private:
1213 1216 enum {
1214 1217 hc_parent_offset = 0
1215 1218 };
1216 1219
1217 1220 static int parent_offset;
1218 1221
1219 1222 public:
1220 1223 static oop parent(oop loader);
1221 1224
1222 1225 static bool is_trusted_loader(oop loader);
1223 1226
1224 1227 // Fix for 4474172
1225 1228 static oop non_reflection_class_loader(oop loader);
1226 1229
1227 1230 // Debugging
1228 1231 friend class JavaClasses;
1229 1232 };
1230 1233
1231 1234
1232 1235 // Interface to java.lang.System objects
1233 1236
1234 1237 class java_lang_System : AllStatic {
1235 1238 private:
1236 1239 enum {
1237 1240 hc_static_in_offset = 0,
1238 1241 hc_static_out_offset = 1,
1239 1242 hc_static_err_offset = 2
1240 1243 };
1241 1244
1242 1245 static int static_in_offset;
1243 1246 static int static_out_offset;
1244 1247 static int static_err_offset;
1245 1248
1246 1249 public:
1247 1250 static int in_offset_in_bytes();
1248 1251 static int out_offset_in_bytes();
1249 1252 static int err_offset_in_bytes();
1250 1253
1251 1254 // Debugging
1252 1255 friend class JavaClasses;
1253 1256 };
1254 1257
1255 1258
1256 1259 // Interface to java.lang.StackTraceElement objects
1257 1260
1258 1261 class java_lang_StackTraceElement: AllStatic {
1259 1262 private:
1260 1263 enum {
1261 1264 hc_declaringClass_offset = 0,
1262 1265 hc_methodName_offset = 1,
1263 1266 hc_fileName_offset = 2,
1264 1267 hc_lineNumber_offset = 3
1265 1268 };
1266 1269
1267 1270 static int declaringClass_offset;
1268 1271 static int methodName_offset;
1269 1272 static int fileName_offset;
1270 1273 static int lineNumber_offset;
1271 1274
1272 1275 public:
1273 1276 // Setters
1274 1277 static void set_declaringClass(oop element, oop value);
1275 1278 static void set_methodName(oop element, oop value);
1276 1279 static void set_fileName(oop element, oop value);
1277 1280 static void set_lineNumber(oop element, int value);
1278 1281
1279 1282 // Create an instance of StackTraceElement
1280 1283 static oop create(methodHandle m, int bci, TRAPS);
1281 1284
1282 1285 // Debugging
1283 1286 friend class JavaClasses;
1284 1287 };
1285 1288
1286 1289
1287 1290 // Interface to java.lang.AssertionStatusDirectives objects
1288 1291
1289 1292 class java_lang_AssertionStatusDirectives: AllStatic {
1290 1293 private:
1291 1294 enum {
1292 1295 hc_classes_offset,
1293 1296 hc_classEnabled_offset,
1294 1297 hc_packages_offset,
1295 1298 hc_packageEnabled_offset,
1296 1299 hc_deflt_offset
1297 1300 };
1298 1301
1299 1302 static int classes_offset;
1300 1303 static int classEnabled_offset;
1301 1304 static int packages_offset;
1302 1305 static int packageEnabled_offset;
1303 1306 static int deflt_offset;
1304 1307
1305 1308 public:
1306 1309 // Setters
1307 1310 static void set_classes(oop obj, oop val);
1308 1311 static void set_classEnabled(oop obj, oop val);
1309 1312 static void set_packages(oop obj, oop val);
1310 1313 static void set_packageEnabled(oop obj, oop val);
1311 1314 static void set_deflt(oop obj, bool val);
1312 1315 // Debugging
1313 1316 friend class JavaClasses;
1314 1317 };
1315 1318
1316 1319
1317 1320 class java_nio_Buffer: AllStatic {
1318 1321 private:
1319 1322 static int _limit_offset;
1320 1323
1321 1324 public:
1322 1325 static int limit_offset();
1323 1326 static void compute_offsets();
1324 1327 };
1325 1328
1326 1329 class sun_misc_AtomicLongCSImpl: AllStatic {
1327 1330 private:
1328 1331 static int _value_offset;
1329 1332
1330 1333 public:
1331 1334 static int value_offset();
1332 1335 static void compute_offsets();
1333 1336 };
1334 1337
1335 1338 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1336 1339 private:
1337 1340 static int _owner_offset;
1338 1341 public:
1339 1342 static void initialize(TRAPS);
1340 1343 static oop get_owner_threadObj(oop obj);
1341 1344 };
1342 1345
1343 1346 // Interface to hard-coded offset checking
1344 1347
1345 1348 class JavaClasses : AllStatic {
1346 1349 private:
1347 1350 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1348 1351 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1349 1352 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1350 1353 public:
1351 1354 static void compute_hard_coded_offsets();
1352 1355 static void compute_offsets();
1353 1356 static void check_offsets() PRODUCT_RETURN;
1354 1357 };
1355 1358
1356 1359 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP
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