1 /*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
24
25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50
51 // Interface to java.lang.String objects
52
53 class java_lang_String : AllStatic {
54 private:
55 static int value_offset;
56 static int hash_offset;
57 static int coder_offset;
58
59 static bool initialized;
60
61 static Handle basic_create(int length, bool byte_arr, TRAPS);
62
63 static void set_coder(oop string, jbyte coder) {
64 assert(initialized, "Must be initialized");
65 if (coder_offset > 0) {
66 string->byte_field_put(coder_offset, coder);
67 }
68 }
69
70 public:
71
72 // Coders
73 enum Coder {
74 CODER_LATIN1 = 0,
75 CODER_UTF16 = 1
76 };
77
78 static void compute_offsets();
79
80 // Instance creation
81 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
82 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
83 static Handle create_from_str(const char* utf8_str, TRAPS);
84 static oop create_oop_from_str(const char* utf8_str, TRAPS);
85 static Handle create_from_symbol(Symbol* symbol, TRAPS);
86 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
87 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
88
89 static bool has_hash_field() {
90 assert(initialized, "Must be initialized");
91 return (hash_offset > 0);
92 }
93 static bool has_coder_field() {
94 assert(initialized, "Must be initialized");
95 return (coder_offset > 0);
96 }
97
98 static void set_compact_strings(bool value);
99
100 static int value_offset_in_bytes() {
101 assert(initialized && (value_offset > 0), "Must be initialized");
102 return value_offset;
103 }
104 static int hash_offset_in_bytes() {
105 assert(initialized && (hash_offset > 0), "Must be initialized");
106 return hash_offset;
107 }
108 static int coder_offset_in_bytes() {
109 assert(initialized && (coder_offset > 0), "Must be initialized");
110 return coder_offset;
111 }
112
113 static void set_value_raw(oop string, typeArrayOop buffer) {
114 assert(initialized, "Must be initialized");
115 string->obj_field_put_raw(value_offset, buffer);
116 }
117 static void set_value(oop string, typeArrayOop buffer) {
118 assert(initialized && (value_offset > 0), "Must be initialized");
119 string->obj_field_put(value_offset, (oop)buffer);
120 }
121 static void set_hash(oop string, unsigned int hash) {
122 assert(initialized && (hash_offset > 0), "Must be initialized");
123 string->int_field_put(hash_offset, hash);
124 }
125
126 // Accessors
127 static typeArrayOop value(oop java_string) {
128 assert(initialized && (value_offset > 0), "Must be initialized");
129 assert(is_instance(java_string), "must be java_string");
130 return (typeArrayOop) java_string->obj_field(value_offset);
131 }
132 static unsigned int hash(oop java_string) {
133 assert(initialized && (hash_offset > 0), "Must be initialized");
134 assert(is_instance(java_string), "must be java_string");
135 return java_string->int_field(hash_offset);
136 }
137 static bool is_latin1(oop java_string) {
138 assert(initialized, "Must be initialized");
139 assert(is_instance(java_string), "must be java_string");
140 if (coder_offset > 0) {
141 jbyte coder = java_string->byte_field(coder_offset);
142 assert(CompactStrings || coder == CODER_UTF16, "Must be UTF16 without CompactStrings");
143 return coder == CODER_LATIN1;
144 } else {
145 return false;
146 }
147 }
148 static int length(oop java_string) {
149 assert(initialized, "Must be initialized");
150 assert(is_instance(java_string), "must be java_string");
151 typeArrayOop value_array = ((typeArrayOop)java_string->obj_field(value_offset));
152 if (value_array == NULL) {
153 return 0;
154 }
155 int arr_length = value_array->length();
156 if (!is_latin1(java_string)) {
157 assert((arr_length & 1) == 0, "should be even for UTF16 string");
158 arr_length >>= 1; // convert number of bytes to number of elements
159 }
160 return arr_length;
161 }
162 static int utf8_length(oop java_string);
163
164 // String converters
165 static char* as_utf8_string(oop java_string);
166 static char* as_utf8_string(oop java_string, char* buf, int buflen);
167 static char* as_utf8_string(oop java_string, int start, int len);
168 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
169 static char* as_platform_dependent_str(Handle java_string, TRAPS);
170 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
171 // produce an ascii string with all other values quoted using \u####
172 static char* as_quoted_ascii(oop java_string);
173
174 // Compute the hash value for a java.lang.String object which would
175 // contain the characters passed in.
176 //
177 // As the hash value used by the String object itself, in
178 // String.hashCode(). This value is normally calculated in Java code
179 // in the String.hashCode method(), but is precomputed for String
180 // objects in the shared archive file.
181 // hash P(31) from Kernighan & Ritchie
182 //
183 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
184 static unsigned int hash_code(const jchar* s, int len) {
185 unsigned int h = 0;
186 while (len-- > 0) {
187 h = 31*h + (unsigned int) *s;
188 s++;
189 }
190 return h;
191 }
192
193 static unsigned int hash_code(const jbyte* s, int len) {
194 unsigned int h = 0;
195 while (len-- > 0) {
196 h = 31*h + (((unsigned int) *s) & 0xFF);
197 s++;
198 }
199 return h;
200 }
201
202 static unsigned int hash_code(oop java_string);
203 static unsigned int latin1_hash_code(typeArrayOop value, int len);
204
205 // This is the string hash code used by the StringTable, which may be
206 // the same as String.hashCode or an alternate hash code.
207 static unsigned int hash_string(oop java_string);
208
209 static bool equals(oop java_string, jchar* chars, int len);
210 static bool equals(oop str1, oop str2);
211
212 // Conversion between '.' and '/' formats
213 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
214 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
215
216 // Conversion
217 static Symbol* as_symbol(Handle java_string, TRAPS);
218 static Symbol* as_symbol_or_null(oop java_string);
219
220 // Testers
221 static bool is_instance(oop obj);
222 static bool is_instance_inlined(oop obj);
223
224 // Debugging
225 static void print(oop java_string, outputStream* st);
226 friend class JavaClasses;
227 friend class StringTable;
228 };
229
230
231 // Interface to java.lang.Class objects
232
233 #define CLASS_INJECTED_FIELDS(macro) \
234 macro(java_lang_Class, klass, intptr_signature, false) \
235 macro(java_lang_Class, array_klass, intptr_signature, false) \
236 macro(java_lang_Class, oop_size, int_signature, false) \
237 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
238 macro(java_lang_Class, protection_domain, object_signature, false) \
239 macro(java_lang_Class, signers, object_signature, false)
240
241 class java_lang_Class : AllStatic {
242 friend class VMStructs;
243 friend class JVMCIVMStructs;
244
245 private:
246 // The fake offsets are added by the class loader when java.lang.Class is loaded
247
248 static int _klass_offset;
249 static int _array_klass_offset;
250
251 static int _oop_size_offset;
252 static int _static_oop_field_count_offset;
253
254 static int _protection_domain_offset;
255 static int _init_lock_offset;
256 static int _signers_offset;
257 static int _class_loader_offset;
258 static int _component_mirror_offset;
259
260 static bool offsets_computed;
261 static int classRedefinedCount_offset;
262
263 static GrowableArray<Klass*>* _fixup_mirror_list;
264
265 static void set_init_lock(oop java_class, oop init_lock);
266 static void set_protection_domain(oop java_class, oop protection_domain);
267 static void set_class_loader(oop java_class, oop class_loader);
268 static void set_component_mirror(oop java_class, oop comp_mirror);
269 static void initialize_mirror_fields(KlassHandle k, Handle mirror, Handle protection_domain, TRAPS);
270 public:
271 static void compute_offsets();
272
273 // Instance creation
274 static void create_mirror(KlassHandle k, Handle class_loader,
275 Handle protection_domain, TRAPS);
276 static void fixup_mirror(KlassHandle k, TRAPS);
277 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
278 // Conversion
279 static Klass* as_Klass(oop java_class);
280 static void set_klass(oop java_class, Klass* klass);
281 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
282 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
283 Klass* refk_oop = NULL;
284 BasicType result = as_BasicType(java_class, &refk_oop);
285 (*reference_klass) = KlassHandle(refk_oop);
286 return result;
287 }
288 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
289 static void print_signature(oop java_class, outputStream *st);
290 static const char* as_external_name(oop java_class);
291 // Testing
292 static bool is_instance(oop obj);
293
294 static bool is_primitive(oop java_class);
295 static BasicType primitive_type(oop java_class);
296 static oop primitive_mirror(BasicType t);
297 // JVM_NewArray support
298 static Klass* array_klass(oop java_class);
299 static void set_array_klass(oop java_class, Klass* klass);
300 // compiler support for class operations
301 static int klass_offset_in_bytes() { return _klass_offset; }
302 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
303 // Support for classRedefinedCount field
304 static int classRedefinedCount(oop the_class_mirror);
305 static void set_classRedefinedCount(oop the_class_mirror, int value);
306
307 // Support for embedded per-class oops
308 static oop protection_domain(oop java_class);
309 static oop init_lock(oop java_class);
310 static oop component_mirror(oop java_class);
311 static objArrayOop signers(oop java_class);
312 static void set_signers(oop java_class, objArrayOop signers);
313
314 static oop class_loader(oop java_class);
315
316 static int oop_size(oop java_class);
317 static void set_oop_size(oop java_class, int size);
318 static int static_oop_field_count(oop java_class);
319 static void set_static_oop_field_count(oop java_class, int size);
320
321 static GrowableArray<Klass*>* fixup_mirror_list() {
322 return _fixup_mirror_list;
323 }
324 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
325 _fixup_mirror_list = v;
326 }
327 // Debugging
328 friend class JavaClasses;
329 friend class InstanceKlass; // verification code accesses offsets
330 friend class ClassFileParser; // access to number_of_fake_fields
331 };
332
333 // Interface to java.lang.Thread objects
334
335 class java_lang_Thread : AllStatic {
336 private:
337 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
338 // so we compute the offsets at startup rather than hard-wiring them.
339 static int _name_offset;
340 static int _group_offset;
341 static int _contextClassLoader_offset;
342 static int _inheritedAccessControlContext_offset;
343 static int _priority_offset;
344 static int _eetop_offset;
345 static int _daemon_offset;
346 static int _stillborn_offset;
347 static int _stackSize_offset;
348 static int _tid_offset;
349 static int _thread_status_offset;
350 static int _park_blocker_offset;
351 static int _park_event_offset ;
352
353 static void compute_offsets();
354
355 public:
356 // Instance creation
357 static oop create();
358 // Returns the JavaThread associated with the thread obj
359 static JavaThread* thread(oop java_thread);
360 // Set JavaThread for instance
361 static void set_thread(oop java_thread, JavaThread* thread);
362 // Name
363 static oop name(oop java_thread);
364 static void set_name(oop java_thread, oop name);
365 // Priority
366 static ThreadPriority priority(oop java_thread);
367 static void set_priority(oop java_thread, ThreadPriority priority);
368 // Thread group
369 static oop threadGroup(oop java_thread);
370 // Stillborn
371 static bool is_stillborn(oop java_thread);
372 static void set_stillborn(oop java_thread);
373 // Alive (NOTE: this is not really a field, but provides the correct
374 // definition without doing a Java call)
375 static bool is_alive(oop java_thread);
376 // Daemon
377 static bool is_daemon(oop java_thread);
378 static void set_daemon(oop java_thread);
379 // Context ClassLoader
380 static oop context_class_loader(oop java_thread);
381 // Control context
382 static oop inherited_access_control_context(oop java_thread);
383 // Stack size hint
384 static jlong stackSize(oop java_thread);
385 // Thread ID
386 static jlong thread_id(oop java_thread);
387
388 // Blocker object responsible for thread parking
389 static oop park_blocker(oop java_thread);
390
391 // Pointer to type-stable park handler, encoded as jlong.
392 // Should be set when apparently null
393 // For details, see unsafe.cpp Unsafe_Unpark
394 static jlong park_event(oop java_thread);
395 static bool set_park_event(oop java_thread, jlong ptr);
396
397 // Java Thread Status for JVMTI and M&M use.
398 // This thread status info is saved in threadStatus field of
399 // java.lang.Thread java class.
400 enum ThreadStatus {
401 NEW = 0,
402 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
403 JVMTI_THREAD_STATE_RUNNABLE,
404 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
405 JVMTI_THREAD_STATE_WAITING +
406 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
407 JVMTI_THREAD_STATE_SLEEPING,
408 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
409 JVMTI_THREAD_STATE_WAITING +
410 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
411 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
412 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
413 JVMTI_THREAD_STATE_WAITING +
414 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
415 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
416 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
417 JVMTI_THREAD_STATE_WAITING +
418 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
419 JVMTI_THREAD_STATE_PARKED,
420 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
421 JVMTI_THREAD_STATE_WAITING +
422 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
423 JVMTI_THREAD_STATE_PARKED,
424 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
425 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
426 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
427 };
428 // Write thread status info to threadStatus field of java.lang.Thread.
429 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
430 // Read thread status info from threadStatus field of java.lang.Thread.
431 static ThreadStatus get_thread_status(oop java_thread_oop);
432
433 static const char* thread_status_name(oop java_thread_oop);
434
435 // Debugging
436 friend class JavaClasses;
437 };
438
439 // Interface to java.lang.ThreadGroup objects
440
441 class java_lang_ThreadGroup : AllStatic {
442 private:
443 static int _parent_offset;
444 static int _name_offset;
445 static int _threads_offset;
446 static int _groups_offset;
447 static int _maxPriority_offset;
448 static int _destroyed_offset;
449 static int _daemon_offset;
450 static int _vmAllowSuspension_offset;
451 static int _nthreads_offset;
452 static int _ngroups_offset;
453
454 static void compute_offsets();
455
456 public:
457 // parent ThreadGroup
458 static oop parent(oop java_thread_group);
459 // name
460 static const char* name(oop java_thread_group);
461 // ("name as oop" accessor is not necessary)
462 // Number of threads in group
463 static int nthreads(oop java_thread_group);
464 // threads
465 static objArrayOop threads(oop java_thread_group);
466 // Number of threads in group
467 static int ngroups(oop java_thread_group);
468 // groups
469 static objArrayOop groups(oop java_thread_group);
470 // maxPriority in group
471 static ThreadPriority maxPriority(oop java_thread_group);
472 // Destroyed
473 static bool is_destroyed(oop java_thread_group);
474 // Daemon
475 static bool is_daemon(oop java_thread_group);
476 // vmAllowSuspension
477 static bool is_vmAllowSuspension(oop java_thread_group);
478 // Debugging
479 friend class JavaClasses;
480 };
481
482
483
484 // Interface to java.lang.Throwable objects
485
486 class java_lang_Throwable: AllStatic {
487 friend class BacktraceBuilder;
488
489 private:
490 // Offsets
491 enum {
492 hc_backtrace_offset = 0,
493 hc_detailMessage_offset = 1,
494 hc_cause_offset = 2, // New since 1.4
495 hc_stackTrace_offset = 3 // New since 1.4
496 };
497 enum {
498 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
499 };
500 // Trace constants
501 enum {
502 trace_methods_offset = 0,
503 trace_bcis_offset = 1,
504 trace_mirrors_offset = 2,
505 trace_cprefs_offset = 3,
506 trace_next_offset = 4,
507 trace_size = 5,
508 trace_chunk_size = 32
509 };
510
511 static int backtrace_offset;
512 static int detailMessage_offset;
513 static int cause_offset;
514 static int stackTrace_offset;
515 static int static_unassigned_stacktrace_offset;
516
517 // Printing
518 static char* print_stack_element_to_buffer(Handle mirror, int method, int version, int bci, int cpref);
519 // StackTrace (programmatic access, new since 1.4)
520 static void clear_stacktrace(oop throwable);
521 // No stack trace available
522 static const char* no_stack_trace_message();
523 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
524 static void set_stacktrace(oop throwable, oop st_element_array);
525 static oop unassigned_stacktrace();
526
527 public:
528 // Backtrace
529 static oop backtrace(oop throwable);
530 static void set_backtrace(oop throwable, oop value);
531 // Needed by JVMTI to filter out this internal field.
532 static int get_backtrace_offset() { return backtrace_offset;}
533 static int get_detailMessage_offset() { return detailMessage_offset;}
534 // Message
535 static oop message(oop throwable);
536 static oop message(Handle throwable);
537 static void set_message(oop throwable, oop value);
538 static Symbol* detail_message(oop throwable);
539 static void print_stack_element(outputStream *st, Handle mirror, int method,
540 int version, int bci, int cpref);
541 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
542 static void print_stack_usage(Handle stream);
543
544 // Allocate space for backtrace (created but stack trace not filled in)
545 static void allocate_backtrace(Handle throwable, TRAPS);
546 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
547 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
548 // Fill in current stack trace, can cause GC
549 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
550 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
551 // Programmatic access to stack trace
552 static oop get_stack_trace_element(oop throwable, int index, TRAPS);
553 static int get_stack_trace_depth(oop throwable, TRAPS);
554 // Printing
555 static void print(Handle throwable, outputStream* st);
556 static void print_stack_trace(Handle throwable, outputStream* st);
557 // Debugging
558 friend class JavaClasses;
559 };
560
561
562 // Interface to java.lang.reflect.AccessibleObject objects
563
564 class java_lang_reflect_AccessibleObject: AllStatic {
565 private:
566 // Note that to reduce dependencies on the JDK we compute these
567 // offsets at run-time.
568 static int override_offset;
569
570 static void compute_offsets();
571
572 public:
573 // Accessors
574 static jboolean override(oop reflect);
575 static void set_override(oop reflect, jboolean value);
576
577 // Debugging
578 friend class JavaClasses;
579 };
580
581
582 // Interface to java.lang.reflect.Method objects
583
584 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
585 private:
586 // Note that to reduce dependencies on the JDK we compute these
587 // offsets at run-time.
588 static int clazz_offset;
589 static int name_offset;
590 static int returnType_offset;
591 static int parameterTypes_offset;
592 static int exceptionTypes_offset;
593 static int slot_offset;
594 static int modifiers_offset;
595 static int signature_offset;
596 static int annotations_offset;
597 static int parameter_annotations_offset;
598 static int annotation_default_offset;
599 static int type_annotations_offset;
600
601 static void compute_offsets();
602
603 public:
604 // Allocation
605 static Handle create(TRAPS);
606
607 // Accessors
608 static oop clazz(oop reflect);
609 static void set_clazz(oop reflect, oop value);
610
611 static oop name(oop method);
612 static void set_name(oop method, oop value);
613
614 static oop return_type(oop method);
615 static void set_return_type(oop method, oop value);
616
617 static oop parameter_types(oop method);
618 static void set_parameter_types(oop method, oop value);
619
620 static oop exception_types(oop method);
621 static void set_exception_types(oop method, oop value);
622
623 static int slot(oop reflect);
624 static void set_slot(oop reflect, int value);
625
626 static int modifiers(oop method);
627 static void set_modifiers(oop method, int value);
628
629 static bool has_signature_field();
630 static oop signature(oop method);
631 static void set_signature(oop method, oop value);
632
633 static bool has_annotations_field();
634 static oop annotations(oop method);
635 static void set_annotations(oop method, oop value);
636
637 static bool has_parameter_annotations_field();
638 static oop parameter_annotations(oop method);
639 static void set_parameter_annotations(oop method, oop value);
640
641 static bool has_annotation_default_field();
642 static oop annotation_default(oop method);
643 static void set_annotation_default(oop method, oop value);
644
645 static bool has_type_annotations_field();
646 static oop type_annotations(oop method);
647 static void set_type_annotations(oop method, oop value);
648
649 // Debugging
650 friend class JavaClasses;
651 };
652
653
654 // Interface to java.lang.reflect.Constructor objects
655
656 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
657 private:
658 // Note that to reduce dependencies on the JDK we compute these
659 // offsets at run-time.
660 static int clazz_offset;
661 static int parameterTypes_offset;
662 static int exceptionTypes_offset;
663 static int slot_offset;
664 static int modifiers_offset;
665 static int signature_offset;
666 static int annotations_offset;
667 static int parameter_annotations_offset;
668 static int type_annotations_offset;
669
670 static void compute_offsets();
671
672 public:
673 // Allocation
674 static Handle create(TRAPS);
675
676 // Accessors
677 static oop clazz(oop reflect);
678 static void set_clazz(oop reflect, oop value);
679
680 static oop parameter_types(oop constructor);
681 static void set_parameter_types(oop constructor, oop value);
682
683 static oop exception_types(oop constructor);
684 static void set_exception_types(oop constructor, oop value);
685
686 static int slot(oop reflect);
687 static void set_slot(oop reflect, int value);
688
689 static int modifiers(oop constructor);
690 static void set_modifiers(oop constructor, int value);
691
692 static bool has_signature_field();
693 static oop signature(oop constructor);
694 static void set_signature(oop constructor, oop value);
695
696 static bool has_annotations_field();
697 static oop annotations(oop constructor);
698 static void set_annotations(oop constructor, oop value);
699
700 static bool has_parameter_annotations_field();
701 static oop parameter_annotations(oop method);
702 static void set_parameter_annotations(oop method, oop value);
703
704 static bool has_type_annotations_field();
705 static oop type_annotations(oop constructor);
706 static void set_type_annotations(oop constructor, oop value);
707
708 // Debugging
709 friend class JavaClasses;
710 };
711
712
713 // Interface to java.lang.reflect.Field objects
714
715 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
716 private:
717 // Note that to reduce dependencies on the JDK we compute these
718 // offsets at run-time.
719 static int clazz_offset;
720 static int name_offset;
721 static int type_offset;
722 static int slot_offset;
723 static int modifiers_offset;
724 static int signature_offset;
725 static int annotations_offset;
726 static int type_annotations_offset;
727
728 static void compute_offsets();
729
730 public:
731 // Allocation
732 static Handle create(TRAPS);
733
734 // Accessors
735 static oop clazz(oop reflect);
736 static void set_clazz(oop reflect, oop value);
737
738 static oop name(oop field);
739 static void set_name(oop field, oop value);
740
741 static oop type(oop field);
742 static void set_type(oop field, oop value);
743
744 static int slot(oop reflect);
745 static void set_slot(oop reflect, int value);
746
747 static int modifiers(oop field);
748 static void set_modifiers(oop field, int value);
749
750 static bool has_signature_field();
751 static oop signature(oop constructor);
752 static void set_signature(oop constructor, oop value);
753
754 static bool has_annotations_field();
755 static oop annotations(oop constructor);
756 static void set_annotations(oop constructor, oop value);
757
758 static bool has_parameter_annotations_field();
759 static oop parameter_annotations(oop method);
760 static void set_parameter_annotations(oop method, oop value);
761
762 static bool has_annotation_default_field();
763 static oop annotation_default(oop method);
764 static void set_annotation_default(oop method, oop value);
765
766 static bool has_type_annotations_field();
767 static oop type_annotations(oop field);
768 static void set_type_annotations(oop field, oop value);
769
770 // Debugging
771 friend class JavaClasses;
772 };
773
774 class java_lang_reflect_Parameter {
775 private:
776 // Note that to reduce dependencies on the JDK we compute these
777 // offsets at run-time.
778 static int name_offset;
779 static int modifiers_offset;
780 static int index_offset;
781 static int executable_offset;
782
783 static void compute_offsets();
784
785 public:
786 // Allocation
787 static Handle create(TRAPS);
788
789 // Accessors
790 static oop name(oop field);
791 static void set_name(oop field, oop value);
792
793 static int index(oop reflect);
794 static void set_index(oop reflect, int value);
795
796 static int modifiers(oop reflect);
797 static void set_modifiers(oop reflect, int value);
798
799 static oop executable(oop constructor);
800 static void set_executable(oop constructor, oop value);
801
802 friend class JavaClasses;
803 };
804
805 // Interface to sun.reflect.ConstantPool objects
806 class sun_reflect_ConstantPool {
807 private:
808 // Note that to reduce dependencies on the JDK we compute these
809 // offsets at run-time.
810 static int _oop_offset;
811
812 static void compute_offsets();
813
814 public:
815 // Allocation
816 static Handle create(TRAPS);
817
818 // Accessors
819 static void set_cp(oop reflect, ConstantPool* value);
820 static int oop_offset() {
821 return _oop_offset;
822 }
823
824 static ConstantPool* get_cp(oop reflect);
825
826 // Debugging
827 friend class JavaClasses;
828 };
829
830 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
831 class sun_reflect_UnsafeStaticFieldAccessorImpl {
832 private:
833 static int _base_offset;
834 static void compute_offsets();
835
836 public:
837 static int base_offset() {
838 return _base_offset;
839 }
840
841 // Debugging
842 friend class JavaClasses;
843 };
844
845 // Interface to java.lang primitive type boxing objects:
846 // - java.lang.Boolean
847 // - java.lang.Character
848 // - java.lang.Float
849 // - java.lang.Double
850 // - java.lang.Byte
851 // - java.lang.Short
852 // - java.lang.Integer
853 // - java.lang.Long
854
855 // This could be separated out into 8 individual classes.
856
857 class java_lang_boxing_object: AllStatic {
858 private:
859 enum {
860 hc_value_offset = 0
861 };
862 static int value_offset;
863 static int long_value_offset;
864
865 static oop initialize_and_allocate(BasicType type, TRAPS);
866 public:
867 // Allocation. Returns a boxed value, or NULL for invalid type.
868 static oop create(BasicType type, jvalue* value, TRAPS);
869 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
870 static BasicType get_value(oop box, jvalue* value);
871 static BasicType set_value(oop box, jvalue* value);
872 static BasicType basic_type(oop box);
873 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
874 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
875 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
876 static void print(BasicType type, jvalue* value, outputStream* st);
877
878 static int value_offset_in_bytes(BasicType type) {
879 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
880 value_offset;
881 }
882
883 // Debugging
884 friend class JavaClasses;
885 };
886
887
888
889 // Interface to java.lang.ref.Reference objects
890
891 class java_lang_ref_Reference: AllStatic {
892 public:
893 enum {
894 hc_referent_offset = 0,
895 hc_queue_offset = 1,
896 hc_next_offset = 2,
897 hc_discovered_offset = 3 // If not last, see SoftReference and Ephemeron.
898 };
899 enum {
900 hc_static_lock_offset = 0,
901 hc_static_pending_offset = 1
902 };
903
904 static int referent_offset;
905 static int queue_offset;
906 static int next_offset;
907 static int discovered_offset;
908 static int static_lock_offset;
909 static int static_pending_offset;
910 static int number_of_fake_oop_fields;
911
912 // Accessors
913 static oop referent(oop ref) {
914 return ref->obj_field(referent_offset);
915 }
916 static void set_referent(oop ref, oop value) {
917 ref->obj_field_put(referent_offset, value);
918 }
919 static void set_referent_raw(oop ref, oop value) {
920 ref->obj_field_put_raw(referent_offset, value);
921 }
922 static HeapWord* referent_addr(oop ref) {
923 return ref->obj_field_addr<HeapWord>(referent_offset);
924 }
925 static oop next(oop ref) {
926 return ref->obj_field(next_offset);
927 }
928 static void set_next(oop ref, oop value) {
929 ref->obj_field_put(next_offset, value);
930 }
931 static void set_next_raw(oop ref, oop value) {
932 ref->obj_field_put_raw(next_offset, value);
933 }
934 static HeapWord* next_addr(oop ref) {
935 return ref->obj_field_addr<HeapWord>(next_offset);
936 }
937 static oop discovered(oop ref) {
938 return ref->obj_field(discovered_offset);
939 }
940 static void set_discovered(oop ref, oop value) {
941 ref->obj_field_put(discovered_offset, value);
942 }
943 static void set_discovered_raw(oop ref, oop value) {
944 ref->obj_field_put_raw(discovered_offset, value);
945 }
946 static HeapWord* discovered_addr(oop ref) {
947 return ref->obj_field_addr<HeapWord>(discovered_offset);
948 }
949 // Accessors for statics
950 static oop pending_list_lock();
951 static oop pending_list();
952
953 static HeapWord* pending_list_lock_addr();
954 static HeapWord* pending_list_addr();
955 };
956
957
958 // Interface to java.lang.ref.WeakReference objects
959
960 class java_lang_ref_WeakReference: public java_lang_ref_Reference {
961 };
962
963
964 // Interface to java.lang.ref.Ephemeron objects
965
966 class java_lang_ref_Ephemeron : public java_lang_ref_WeakReference {
967 public:
968 enum {
969 hc_value_offset = hc_discovered_offset + 1
970 };
971
972 static int value_offset;
973
974 // Accessors
975 static oop value(oop ref) {
976 return ref->obj_field(value_offset);
977 }
978 static void set_value(oop ref, oop value) {
979 ref->obj_field_put(value_offset, value);
980 }
981 static void set_value_raw(oop ref, oop value) {
982 ref->obj_field_put_raw(value_offset, value);
983 }
984 static HeapWord* value_addr(oop ref) {
985 return ref->obj_field_addr<HeapWord>(value_offset);
986 }
987 };
988
989
990 // Interface to java.lang.ref.SoftReference objects
991
992 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
993 public:
994 enum {
995 // The timestamp is a long field and may need to be adjusted for alignment.
996 hc_timestamp_offset = hc_discovered_offset + 1
997 };
998 enum {
999 hc_static_clock_offset = 0
1000 };
1001
1002 static int timestamp_offset;
1003 static int static_clock_offset;
1004
1005 // Accessors
1006 static jlong timestamp(oop ref);
1007
1008 // Accessors for statics
1009 static jlong clock();
1010 static void set_clock(jlong value);
1011 };
1012
1013 // Interface to java.lang.invoke.MethodHandle objects
1014
1015 class MethodHandleEntry;
1016
1017 class java_lang_invoke_MethodHandle: AllStatic {
1018 friend class JavaClasses;
1019
1020 private:
1021 static int _type_offset; // the MethodType of this MH
1022 static int _form_offset; // the LambdaForm of this MH
1023
1024 static void compute_offsets();
1025
1026 public:
1027 // Accessors
1028 static oop type(oop mh);
1029 static void set_type(oop mh, oop mtype);
1030
1031 static oop form(oop mh);
1032 static void set_form(oop mh, oop lform);
1033
1034 // Testers
1035 static bool is_subclass(Klass* klass) {
1036 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1037 }
1038 static bool is_instance(oop obj);
1039
1040 // Accessors for code generation:
1041 static int type_offset_in_bytes() { return _type_offset; }
1042 static int form_offset_in_bytes() { return _form_offset; }
1043 };
1044
1045 // Interface to java.lang.invoke.DirectMethodHandle objects
1046
1047 class java_lang_invoke_DirectMethodHandle: AllStatic {
1048 friend class JavaClasses;
1049
1050 private:
1051 static int _member_offset; // the MemberName of this DMH
1052
1053 static void compute_offsets();
1054
1055 public:
1056 // Accessors
1057 static oop member(oop mh);
1058
1059 // Testers
1060 static bool is_subclass(Klass* klass) {
1061 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1062 }
1063 static bool is_instance(oop obj);
1064
1065 // Accessors for code generation:
1066 static int member_offset_in_bytes() { return _member_offset; }
1067 };
1068
1069 // Interface to java.lang.invoke.LambdaForm objects
1070 // (These are a private interface for managing adapter code generation.)
1071
1072 class java_lang_invoke_LambdaForm: AllStatic {
1073 friend class JavaClasses;
1074
1075 private:
1076 static int _vmentry_offset; // type is MemberName
1077
1078 static void compute_offsets();
1079
1080 public:
1081 // Accessors
1082 static oop vmentry(oop lform);
1083 static void set_vmentry(oop lform, oop invoker);
1084
1085 // Testers
1086 static bool is_subclass(Klass* klass) {
1087 return SystemDictionary::LambdaForm_klass() != NULL &&
1088 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1089 }
1090 static bool is_instance(oop obj);
1091
1092 // Accessors for code generation:
1093 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1094 };
1095
1096
1097 // Interface to java.lang.invoke.MemberName objects
1098 // (These are a private interface for Java code to query the class hierarchy.)
1099
1100 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1101 macro(java_lang_invoke_MemberName, vmloader, object_signature, false) \
1102 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \
1103 macro(java_lang_invoke_MemberName, vmtarget, intptr_signature, false)
1104
1105 class java_lang_invoke_MemberName: AllStatic {
1106 friend class JavaClasses;
1107
1108 private:
1109 // From java.lang.invoke.MemberName:
1110 // private Class<?> clazz; // class in which the method is defined
1111 // private String name; // may be null if not yet materialized
1112 // private Object type; // may be null if not yet materialized
1113 // private int flags; // modifier bits; see reflect.Modifier
1114 // private intptr vmtarget; // VM-specific target value
1115 // private intptr_t vmindex; // member index within class or interface
1116 static int _clazz_offset;
1117 static int _name_offset;
1118 static int _type_offset;
1119 static int _flags_offset;
1120 static int _vmtarget_offset;
1121 static int _vmloader_offset;
1122 static int _vmindex_offset;
1123
1124 static void compute_offsets();
1125
1126 public:
1127 // Accessors
1128 static oop clazz(oop mname);
1129 static void set_clazz(oop mname, oop clazz);
1130
1131 static oop type(oop mname);
1132 static void set_type(oop mname, oop type);
1133
1134 static oop name(oop mname);
1135 static void set_name(oop mname, oop name);
1136
1137 static int flags(oop mname);
1138 static void set_flags(oop mname, int flags);
1139
1140 static Metadata* vmtarget(oop mname);
1141 static void set_vmtarget(oop mname, Metadata* target);
1142
1143 static intptr_t vmindex(oop mname);
1144 static void set_vmindex(oop mname, intptr_t index);
1145
1146 // Testers
1147 static bool is_subclass(Klass* klass) {
1148 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1149 }
1150 static bool is_instance(oop obj);
1151
1152 static bool is_method(oop obj);
1153
1154 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1155 enum {
1156 MN_IS_METHOD = 0x00010000, // method (not constructor)
1157 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1158 MN_IS_FIELD = 0x00040000, // field
1159 MN_IS_TYPE = 0x00080000, // nested type
1160 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1161 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1162 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1163 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1164 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1165 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1166 };
1167
1168 // Accessors for code generation:
1169 static int clazz_offset_in_bytes() { return _clazz_offset; }
1170 static int type_offset_in_bytes() { return _type_offset; }
1171 static int name_offset_in_bytes() { return _name_offset; }
1172 static int flags_offset_in_bytes() { return _flags_offset; }
1173 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1174 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1175 };
1176
1177
1178 // Interface to java.lang.invoke.MethodType objects
1179
1180 class java_lang_invoke_MethodType: AllStatic {
1181 friend class JavaClasses;
1182
1183 private:
1184 static int _rtype_offset;
1185 static int _ptypes_offset;
1186
1187 static void compute_offsets();
1188
1189 public:
1190 // Accessors
1191 static oop rtype(oop mt);
1192 static objArrayOop ptypes(oop mt);
1193
1194 static oop ptype(oop mt, int index);
1195 static int ptype_count(oop mt);
1196
1197 static int ptype_slot_count(oop mt); // extra counts for long/double
1198 static int rtype_slot_count(oop mt); // extra counts for long/double
1199
1200 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1201 static void print_signature(oop mt, outputStream* st);
1202
1203 static bool is_instance(oop obj);
1204
1205 static bool equals(oop mt1, oop mt2);
1206
1207 // Accessors for code generation:
1208 static int rtype_offset_in_bytes() { return _rtype_offset; }
1209 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1210 };
1211
1212
1213 // Interface to java.lang.invoke.CallSite objects
1214
1215 class java_lang_invoke_CallSite: AllStatic {
1216 friend class JavaClasses;
1217
1218 private:
1219 static int _target_offset;
1220 static int _context_offset;
1221
1222 static void compute_offsets();
1223
1224 public:
1225 // Accessors
1226 static oop target( oop site);
1227 static void set_target( oop site, oop target);
1228 static void set_target_volatile( oop site, oop target);
1229
1230 static oop context(oop site);
1231
1232 // Testers
1233 static bool is_subclass(Klass* klass) {
1234 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1235 }
1236 static bool is_instance(oop obj);
1237
1238 // Accessors for code generation:
1239 static int target_offset_in_bytes() { return _target_offset; }
1240 };
1241
1242 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1243
1244 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1245 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1246
1247 class DependencyContext;
1248
1249 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1250 friend class JavaClasses;
1251
1252 private:
1253 static int _vmdependencies_offset;
1254
1255 static void compute_offsets();
1256
1257 public:
1258 // Accessors
1259 static DependencyContext vmdependencies(oop context);
1260
1261 // Testers
1262 static bool is_subclass(Klass* klass) {
1263 return klass->is_subclass_of(SystemDictionary::Context_klass());
1264 }
1265 static bool is_instance(oop obj);
1266 };
1267
1268 // Interface to java.security.AccessControlContext objects
1269
1270 class java_security_AccessControlContext: AllStatic {
1271 private:
1272 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1273 // so we compute the offsets at startup rather than hard-wiring them.
1274 static int _context_offset;
1275 static int _privilegedContext_offset;
1276 static int _isPrivileged_offset;
1277 static int _isAuthorized_offset;
1278
1279 static void compute_offsets();
1280 public:
1281 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1282
1283 static bool is_authorized(Handle context);
1284
1285 // Debugging/initialization
1286 friend class JavaClasses;
1287 };
1288
1289
1290 // Interface to java.lang.ClassLoader objects
1291
1292 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1293 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1294
1295 class java_lang_ClassLoader : AllStatic {
1296 private:
1297 // The fake offsets are added by the class loader when java.lang.Class is loaded
1298 enum {
1299 hc_parent_offset = 0
1300 };
1301 static int _loader_data_offset;
1302 static bool offsets_computed;
1303 static int parent_offset;
1304 static int parallelCapable_offset;
1305
1306 public:
1307 static void compute_offsets();
1308
1309 static ClassLoaderData** loader_data_addr(oop loader);
1310 static ClassLoaderData* loader_data(oop loader);
1311
1312 static oop parent(oop loader);
1313 static bool isAncestor(oop loader, oop cl);
1314
1315 // Support for parallelCapable field
1316 static bool parallelCapable(oop the_class_mirror);
1317
1318 static bool is_trusted_loader(oop loader);
1319
1320 // Fix for 4474172
1321 static oop non_reflection_class_loader(oop loader);
1322
1323 // Testers
1324 static bool is_subclass(Klass* klass) {
1325 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1326 }
1327 static bool is_instance(oop obj);
1328
1329 // Debugging
1330 friend class JavaClasses;
1331 friend class ClassFileParser; // access to number_of_fake_fields
1332 };
1333
1334
1335 // Interface to java.lang.System objects
1336
1337 class java_lang_System : AllStatic {
1338 private:
1339 enum {
1340 hc_static_in_offset = 0,
1341 hc_static_out_offset = 1,
1342 hc_static_err_offset = 2,
1343 hc_static_security_offset = 3
1344 };
1345
1346 static int static_in_offset;
1347 static int static_out_offset;
1348 static int static_err_offset;
1349 static int static_security_offset;
1350
1351 public:
1352 static int in_offset_in_bytes();
1353 static int out_offset_in_bytes();
1354 static int err_offset_in_bytes();
1355
1356 static bool has_security_manager();
1357
1358 // Debugging
1359 friend class JavaClasses;
1360 };
1361
1362
1363 // Interface to java.lang.StackTraceElement objects
1364
1365 class java_lang_StackTraceElement: AllStatic {
1366 private:
1367 enum {
1368 hc_declaringClass_offset = 0,
1369 hc_methodName_offset = 1,
1370 hc_fileName_offset = 2,
1371 hc_lineNumber_offset = 3
1372 };
1373
1374 static int declaringClass_offset;
1375 static int methodName_offset;
1376 static int fileName_offset;
1377 static int lineNumber_offset;
1378
1379 public:
1380 // Setters
1381 static void set_declaringClass(oop element, oop value);
1382 static void set_methodName(oop element, oop value);
1383 static void set_fileName(oop element, oop value);
1384 static void set_lineNumber(oop element, int value);
1385
1386 // Create an instance of StackTraceElement
1387 static oop create(Handle mirror, int method, int version, int bci, int cpref, TRAPS);
1388 static oop create(const methodHandle& method, int bci, TRAPS);
1389
1390 // Debugging
1391 friend class JavaClasses;
1392 };
1393
1394
1395 class Backtrace: AllStatic {
1396 public:
1397 // Helper backtrace functions to store bci|version together.
1398 static int merge_bci_and_version(int bci, int version);
1399 static int merge_mid_and_cpref(int mid, int cpref);
1400 static int bci_at(unsigned int merged);
1401 static int version_at(unsigned int merged);
1402 static int mid_at(unsigned int merged);
1403 static int cpref_at(unsigned int merged);
1404 static int get_line_number(const methodHandle& method, int bci);
1405 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1406
1407 // Debugging
1408 friend class JavaClasses;
1409 };
1410
1411 // Interface to java.lang.StackFrameInfo objects
1412
1413 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1414 macro(java_lang_StackFrameInfo, mid, short_signature, false) \
1415 macro(java_lang_StackFrameInfo, version, short_signature, false) \
1416 macro(java_lang_StackFrameInfo, cpref, short_signature, false)
1417
1418 class java_lang_StackFrameInfo: AllStatic {
1419 private:
1420 static int _declaringClass_offset;
1421 static int _memberName_offset;
1422 static int _bci_offset;
1423 static int _methodName_offset;
1424 static int _fileName_offset;
1425 static int _lineNumber_offset;
1426
1427 static int _mid_offset;
1428 static int _version_offset;
1429 static int _cpref_offset;
1430
1431 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1432 static Symbol* get_file_name(Handle stackFrame, InstanceKlass* holder);
1433
1434 public:
1435 // Setters
1436 static void set_declaringClass(oop info, oop value);
1437 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci);
1438 static void set_bci(oop info, int value);
1439
1440 // set method info in an instance of StackFrameInfo
1441 static void fill_methodInfo(Handle info, TRAPS);
1442 static void set_methodName(oop info, oop value);
1443 static void set_fileName(oop info, oop value);
1444 static void set_lineNumber(oop info, int value);
1445
1446 // these injected fields are only used if -XX:-MemberNameInStackFrame set
1447 static void set_mid(oop info, short value);
1448 static void set_version(oop info, short value);
1449 static void set_cpref(oop info, short value);
1450
1451 static void compute_offsets();
1452
1453 // Debugging
1454 friend class JavaClasses;
1455 };
1456
1457 class java_lang_LiveStackFrameInfo: AllStatic {
1458 private:
1459 static int _monitors_offset;
1460 static int _locals_offset;
1461 static int _operands_offset;
1462
1463 public:
1464 static void set_monitors(oop info, oop value);
1465 static void set_locals(oop info, oop value);
1466 static void set_operands(oop info, oop value);
1467
1468 static void compute_offsets();
1469
1470 // Debugging
1471 friend class JavaClasses;
1472 };
1473
1474 // Interface to java.lang.AssertionStatusDirectives objects
1475
1476 class java_lang_AssertionStatusDirectives: AllStatic {
1477 private:
1478 enum {
1479 hc_classes_offset,
1480 hc_classEnabled_offset,
1481 hc_packages_offset,
1482 hc_packageEnabled_offset,
1483 hc_deflt_offset
1484 };
1485
1486 static int classes_offset;
1487 static int classEnabled_offset;
1488 static int packages_offset;
1489 static int packageEnabled_offset;
1490 static int deflt_offset;
1491
1492 public:
1493 // Setters
1494 static void set_classes(oop obj, oop val);
1495 static void set_classEnabled(oop obj, oop val);
1496 static void set_packages(oop obj, oop val);
1497 static void set_packageEnabled(oop obj, oop val);
1498 static void set_deflt(oop obj, bool val);
1499 // Debugging
1500 friend class JavaClasses;
1501 };
1502
1503
1504 class java_nio_Buffer: AllStatic {
1505 private:
1506 static int _limit_offset;
1507
1508 public:
1509 static int limit_offset();
1510 static void compute_offsets();
1511 };
1512
1513 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1514 private:
1515 static int _owner_offset;
1516 public:
1517 static void initialize(TRAPS);
1518 static oop get_owner_threadObj(oop obj);
1519 };
1520
1521 // Use to declare fields that need to be injected into Java classes
1522 // for the JVM to use. The name_index and signature_index are
1523 // declared in vmSymbols. The may_be_java flag is used to declare
1524 // fields that might already exist in Java but should be injected if
1525 // they don't. Otherwise the field is unconditionally injected and
1526 // the JVM uses the injected one. This is to ensure that name
1527 // collisions don't occur. In general may_be_java should be false
1528 // unless there's a good reason.
1529
1530 class InjectedField {
1531 public:
1532 const SystemDictionary::WKID klass_id;
1533 const vmSymbols::SID name_index;
1534 const vmSymbols::SID signature_index;
1535 const bool may_be_java;
1536
1537
1538 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1539 Symbol* name() const { return lookup_symbol(name_index); }
1540 Symbol* signature() const { return lookup_symbol(signature_index); }
1541
1542 int compute_offset();
1543
1544 // Find the Symbol for this index
1545 static Symbol* lookup_symbol(int symbol_index) {
1546 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1547 }
1548 };
1549
1550 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1551 klass##_##name##_enum,
1552
1553 #define ALL_INJECTED_FIELDS(macro) \
1554 CLASS_INJECTED_FIELDS(macro) \
1555 CLASSLOADER_INJECTED_FIELDS(macro) \
1556 MEMBERNAME_INJECTED_FIELDS(macro) \
1557 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1558 STACKFRAMEINFO_INJECTED_FIELDS(macro)
1559
1560
1561 // Interface to hard-coded offset checking
1562
1563 class JavaClasses : AllStatic {
1564 private:
1565
1566 static InjectedField _injected_fields[];
1567
1568 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1569 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1570 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1571
1572 public:
1573 enum InjectedFieldID {
1574 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1575 MAX_enum
1576 };
1577
1578 static int compute_injected_offset(InjectedFieldID id);
1579
1580 static void compute_hard_coded_offsets();
1581 static void compute_offsets();
1582 static void check_offsets() PRODUCT_RETURN;
1583
1584 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1585 };
1586
1587 #undef DECLARE_INJECTED_FIELD_ENUM
1588
1589 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP