1 /*
2 * Copyright (c) 1997, 2018, 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 inline void set_coder(oop string, jbyte coder);
64
65 public:
66
67 // Coders
68 enum Coder {
69 CODER_LATIN1 = 0,
70 CODER_UTF16 = 1
71 };
72
73 static void compute_offsets();
74 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
75
76 // Instance creation
77 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
78 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
79 static Handle create_from_str(const char* utf8_str, TRAPS);
80 static oop create_oop_from_str(const char* utf8_str, TRAPS);
81 static Handle create_from_symbol(Symbol* symbol, TRAPS);
82 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
83 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
84
85 static void set_compact_strings(bool value);
86
87 static int value_offset_in_bytes() {
88 assert(initialized && (value_offset > 0), "Must be initialized");
89 return value_offset;
90 }
91 static int hash_offset_in_bytes() {
92 assert(initialized && (hash_offset > 0), "Must be initialized");
93 return hash_offset;
94 }
95 static int coder_offset_in_bytes() {
96 assert(initialized && (coder_offset > 0), "Must be initialized");
97 return coder_offset;
98 }
99
100 static inline void set_value_raw(oop string, typeArrayOop buffer);
101 static inline void set_value(oop string, typeArrayOop buffer);
102 static inline void set_hash(oop string, unsigned int hash);
103
104 // Accessors
105 static inline typeArrayOop value(oop java_string);
106 static inline typeArrayOop value_no_keepalive(oop java_string);
107 static inline unsigned int hash(oop java_string);
108 static inline bool is_latin1(oop java_string);
109 static inline int length(oop java_string);
110 static int utf8_length(oop java_string);
111
112 // String converters
113 static char* as_utf8_string(oop java_string);
114 static char* as_utf8_string(oop java_string, char* buf, int buflen);
115 static char* as_utf8_string(oop java_string, int start, int len);
116 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
117 static char* as_platform_dependent_str(Handle java_string, TRAPS);
118 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
119 // produce an ascii string with all other values quoted using \u####
120 static char* as_quoted_ascii(oop java_string);
121
122 // Compute the hash value for a java.lang.String object which would
123 // contain the characters passed in.
124 //
125 // As the hash value used by the String object itself, in
126 // String.hashCode(). This value is normally calculated in Java code
127 // in the String.hashCode method(), but is precomputed for String
128 // objects in the shared archive file.
129 // hash P(31) from Kernighan & Ritchie
130 //
131 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
132 static unsigned int hash_code(const jchar* s, int len) {
133 unsigned int h = 0;
134 while (len-- > 0) {
135 h = 31*h + (unsigned int) *s;
136 s++;
137 }
138 return h;
139 }
140
141 static unsigned int hash_code(const jbyte* s, int len) {
142 unsigned int h = 0;
143 while (len-- > 0) {
144 h = 31*h + (((unsigned int) *s) & 0xFF);
145 s++;
146 }
147 return h;
148 }
149
150 static unsigned int hash_code(oop java_string);
151
152 static bool equals(oop java_string, jchar* chars, int len);
153 static bool equals(oop str1, oop str2);
154
155 // Conversion between '.' and '/' formats
156 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
157 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
158
159 // Conversion
160 static Symbol* as_symbol(oop java_string, TRAPS);
161 static Symbol* as_symbol_or_null(oop java_string);
162
163 // Testers
164 static bool is_instance(oop obj);
165 static inline bool is_instance_inlined(oop obj);
166
167 // Debugging
168 static void print(oop java_string, outputStream* st);
169 friend class JavaClasses;
170 friend class StringTable;
171 };
172
173
174 // Interface to java.lang.Class objects
175
176 #define CLASS_INJECTED_FIELDS(macro) \
177 macro(java_lang_Class, klass, intptr_signature, false) \
178 macro(java_lang_Class, array_klass, intptr_signature, false) \
179 macro(java_lang_Class, oop_size, int_signature, false) \
180 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
181 macro(java_lang_Class, protection_domain, object_signature, false) \
182 macro(java_lang_Class, signers, object_signature, false)
183
184 class java_lang_Class : AllStatic {
185 friend class VMStructs;
186 friend class JVMCIVMStructs;
187
188 private:
189 // The fake offsets are added by the class loader when java.lang.Class is loaded
190
191 static int _klass_offset;
192 static int _array_klass_offset;
193
194 static int _oop_size_offset;
195 static int _static_oop_field_count_offset;
196
197 static int _protection_domain_offset;
198 static int _init_lock_offset;
199 static int _signers_offset;
200 static int _class_loader_offset;
201 static int _module_offset;
202 static int _component_mirror_offset;
203
204 static bool offsets_computed;
205 static int classRedefinedCount_offset;
206
207 static GrowableArray<Klass*>* _fixup_mirror_list;
208 static GrowableArray<Klass*>* _fixup_module_field_list;
209
210 static void set_init_lock(oop java_class, oop init_lock);
211 static void set_protection_domain(oop java_class, oop protection_domain);
212 static void set_class_loader(oop java_class, oop class_loader);
213 static void set_component_mirror(oop java_class, oop comp_mirror);
214 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
215 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
216 public:
217 static void allocate_fixup_lists();
218 static void compute_offsets();
219
220 // Instance creation
221 static void create_mirror(Klass* k, Handle class_loader, Handle module,
222 Handle protection_domain, TRAPS);
223 static void fixup_mirror(Klass* k, TRAPS);
224 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
225
226 // Archiving
227 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
228 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
229 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
230 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
231 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
232 static void restore_archived_mirror(Klass *k, Handle mirror, Handle class_loader, Handle module,
233 Handle protection_domain, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
234
235 static void fixup_module_field(Klass* k, Handle module);
236
237 // Conversion
238 static Klass* as_Klass(oop java_class);
239 static void set_klass(oop java_class, Klass* klass);
240 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
241 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
242 static void print_signature(oop java_class, outputStream *st);
243 static const char* as_external_name(oop java_class);
244 // Testing
245 static bool is_instance(oop obj);
246
247 static bool is_primitive(oop java_class);
248 static BasicType primitive_type(oop java_class);
249 static oop primitive_mirror(BasicType t);
250 // JVM_NewArray support
251 static Klass* array_klass_acquire(oop java_class);
252 static void release_set_array_klass(oop java_class, Klass* klass);
253 // compiler support for class operations
254 static int klass_offset_in_bytes() { return _klass_offset; }
255 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
256 // Support for classRedefinedCount field
257 static int classRedefinedCount(oop the_class_mirror);
258 static void set_classRedefinedCount(oop the_class_mirror, int value);
259
260 // Support for embedded per-class oops
261 static oop protection_domain(oop java_class);
262 static oop init_lock(oop java_class);
263 static oop component_mirror(oop java_class);
264 static objArrayOop signers(oop java_class);
265 static void set_signers(oop java_class, objArrayOop signers);
266
267 static oop class_loader(oop java_class);
268 static void set_module(oop java_class, oop module);
269 static oop module(oop java_class);
270
271 static int oop_size(oop java_class);
272 static void set_oop_size(oop java_class, int size);
273 static int static_oop_field_count(oop java_class);
274 static void set_static_oop_field_count(oop java_class, int size);
275
276 static GrowableArray<Klass*>* fixup_mirror_list() {
277 return _fixup_mirror_list;
278 }
279 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
280 _fixup_mirror_list = v;
281 }
282
283 static GrowableArray<Klass*>* fixup_module_field_list() {
284 return _fixup_module_field_list;
285 }
286 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
287 _fixup_module_field_list = v;
288 }
289
290 // Debugging
291 friend class JavaClasses;
292 friend class InstanceKlass; // verification code accesses offsets
293 friend class ClassFileParser; // access to number_of_fake_fields
294 };
295
296 // Interface to java.lang.Thread objects
297
298 class java_lang_Thread : AllStatic {
299 private:
300 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
301 // so we compute the offsets at startup rather than hard-wiring them.
302 static int _name_offset;
303 static int _group_offset;
304 static int _contextClassLoader_offset;
305 static int _inheritedAccessControlContext_offset;
306 static int _priority_offset;
307 static int _eetop_offset;
308 static int _daemon_offset;
309 static int _stillborn_offset;
310 static int _stackSize_offset;
311 static int _tid_offset;
312 static int _continuation_offset;
313 static int _thread_status_offset;
314 static int _park_blocker_offset;
315 static int _park_event_offset ;
316
317 static void compute_offsets();
318
319 public:
320 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
321
322 // Instance creation
323 static oop create();
324 // Returns the JavaThread associated with the thread obj
325 static JavaThread* thread(oop java_thread);
326 // Set JavaThread for instance
327 static void set_thread(oop java_thread, JavaThread* thread);
328 // Name
329 static oop name(oop java_thread);
330 static void set_name(oop java_thread, oop name);
331 // Priority
332 static ThreadPriority priority(oop java_thread);
333 static void set_priority(oop java_thread, ThreadPriority priority);
334 // Thread group
335 static oop threadGroup(oop java_thread);
336 // Stillborn
337 static bool is_stillborn(oop java_thread);
338 static void set_stillborn(oop java_thread);
339 // Alive (NOTE: this is not really a field, but provides the correct
340 // definition without doing a Java call)
341 static bool is_alive(oop java_thread);
342 // Daemon
343 static bool is_daemon(oop java_thread);
344 static void set_daemon(oop java_thread);
345 // Context ClassLoader
346 static oop context_class_loader(oop java_thread);
347 // Control context
348 static oop inherited_access_control_context(oop java_thread);
349 // Stack size hint
350 static jlong stackSize(oop java_thread);
351 // Thread ID
352 static jlong thread_id(oop java_thread);
353 // Continuation
354 static oop continuation(oop java_thread);
355 static void set_continuation(oop java_thread, oop continuation);
356
357 // Blocker object responsible for thread parking
358 static oop park_blocker(oop java_thread);
359
360 // Pointer to type-stable park handler, encoded as jlong.
361 // Should be set when apparently null
362 // For details, see unsafe.cpp Unsafe_Unpark
363 static jlong park_event(oop java_thread);
364 static bool set_park_event(oop java_thread, jlong ptr);
365
366 // Java Thread Status for JVMTI and M&M use.
367 // This thread status info is saved in threadStatus field of
368 // java.lang.Thread java class.
369 enum ThreadStatus {
370 NEW = 0,
371 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
372 JVMTI_THREAD_STATE_RUNNABLE,
373 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
374 JVMTI_THREAD_STATE_WAITING +
375 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
376 JVMTI_THREAD_STATE_SLEEPING,
377 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
378 JVMTI_THREAD_STATE_WAITING +
379 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
380 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
381 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
382 JVMTI_THREAD_STATE_WAITING +
383 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
384 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
385 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
386 JVMTI_THREAD_STATE_WAITING +
387 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
388 JVMTI_THREAD_STATE_PARKED,
389 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
390 JVMTI_THREAD_STATE_WAITING +
391 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
392 JVMTI_THREAD_STATE_PARKED,
393 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
394 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
395 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
396 };
397 // Write thread status info to threadStatus field of java.lang.Thread.
398 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
399 // Read thread status info from threadStatus field of java.lang.Thread.
400 static ThreadStatus get_thread_status(oop java_thread_oop);
401
402 static const char* thread_status_name(oop java_thread_oop);
403
404 // Debugging
405 friend class JavaClasses;
406 };
407
408 // Interface to java.lang.ThreadGroup objects
409
410 class java_lang_ThreadGroup : AllStatic {
411 private:
412 static int _parent_offset;
413 static int _name_offset;
414 static int _threads_offset;
415 static int _groups_offset;
416 static int _maxPriority_offset;
417 static int _destroyed_offset;
418 static int _daemon_offset;
419 static int _nthreads_offset;
420 static int _ngroups_offset;
421
422 static void compute_offsets();
423
424 public:
425 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
426
427 // parent ThreadGroup
428 static oop parent(oop java_thread_group);
429 // name
430 static const char* name(oop java_thread_group);
431 // ("name as oop" accessor is not necessary)
432 // Number of threads in group
433 static int nthreads(oop java_thread_group);
434 // threads
435 static objArrayOop threads(oop java_thread_group);
436 // Number of threads in group
437 static int ngroups(oop java_thread_group);
438 // groups
439 static objArrayOop groups(oop java_thread_group);
440 // maxPriority in group
441 static ThreadPriority maxPriority(oop java_thread_group);
442 // Destroyed
443 static bool is_destroyed(oop java_thread_group);
444 // Daemon
445 static bool is_daemon(oop java_thread_group);
446 // Debugging
447 friend class JavaClasses;
448 };
449
450
451
452 // Interface to java.lang.Throwable objects
453
454 class java_lang_Throwable: AllStatic {
455 friend class BacktraceBuilder;
456 friend class BacktraceIterator;
457
458 private:
459 // Offsets
460 enum {
461 hc_backtrace_offset = 0,
462 hc_detailMessage_offset = 1,
463 hc_cause_offset = 2, // New since 1.4
464 hc_stackTrace_offset = 3 // New since 1.4
465 };
466 // Trace constants
467 enum {
468 trace_methods_offset = 0,
469 trace_bcis_offset = 1,
470 trace_mirrors_offset = 2,
471 trace_names_offset = 3,
472 trace_next_offset = 4,
473 trace_size = 5,
474 trace_chunk_size = 32
475 };
476
477 static int backtrace_offset;
478 static int detailMessage_offset;
479 static int stackTrace_offset;
480 static int depth_offset;
481 static int static_unassigned_stacktrace_offset;
482
483 // StackTrace (programmatic access, new since 1.4)
484 static void clear_stacktrace(oop throwable);
485 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
486 static void set_stacktrace(oop throwable, oop st_element_array);
487 static oop unassigned_stacktrace();
488
489 public:
490 // Backtrace
491 static oop backtrace(oop throwable);
492 static void set_backtrace(oop throwable, oop value);
493 static int depth(oop throwable);
494 static void set_depth(oop throwable, int value);
495 // Needed by JVMTI to filter out this internal field.
496 static int get_backtrace_offset() { return backtrace_offset;}
497 static int get_detailMessage_offset() { return detailMessage_offset;}
498 // Message
499 static oop message(oop throwable);
500 static void set_message(oop throwable, oop value);
501 static Symbol* detail_message(oop throwable);
502 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
503 static void print_stack_usage(Handle stream);
504
505 static void compute_offsets();
506 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
507
508 // Allocate space for backtrace (created but stack trace not filled in)
509 static void allocate_backtrace(Handle throwable, TRAPS);
510 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
511 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
512 // Fill in current stack trace, can cause GC
513 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
514 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
515 // Programmatic access to stack trace
516 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
517 // Printing
518 static void print(oop throwable, outputStream* st);
519 static void print_stack_trace(Handle throwable, outputStream* st);
520 static void java_printStackTrace(Handle throwable, TRAPS);
521 // Debugging
522 friend class JavaClasses;
523 };
524
525
526 // Interface to java.lang.reflect.AccessibleObject objects
527
528 class java_lang_reflect_AccessibleObject: AllStatic {
529 private:
530 // Note that to reduce dependencies on the JDK we compute these
531 // offsets at run-time.
532 static int override_offset;
533
534 static void compute_offsets();
535
536 public:
537 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
538
539 // Accessors
540 static jboolean override(oop reflect);
541 static void set_override(oop reflect, jboolean value);
542
543 // Debugging
544 friend class JavaClasses;
545 };
546
547
548 // Interface to java.lang.reflect.Method objects
549
550 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
551 private:
552 // Note that to reduce dependencies on the JDK we compute these
553 // offsets at run-time.
554 static int clazz_offset;
555 static int name_offset;
556 static int returnType_offset;
557 static int parameterTypes_offset;
558 static int exceptionTypes_offset;
559 static int slot_offset;
560 static int modifiers_offset;
561 static int signature_offset;
562 static int annotations_offset;
563 static int parameter_annotations_offset;
564 static int annotation_default_offset;
565 static int type_annotations_offset;
566
567 static void compute_offsets();
568
569 public:
570 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
571
572 // Allocation
573 static Handle create(TRAPS);
574
575 // Accessors
576 static oop clazz(oop reflect);
577 static void set_clazz(oop reflect, oop value);
578
579 static oop name(oop method);
580 static void set_name(oop method, oop value);
581
582 static oop return_type(oop method);
583 static void set_return_type(oop method, oop value);
584
585 static oop parameter_types(oop method);
586 static void set_parameter_types(oop method, oop value);
587
588 static oop exception_types(oop method);
589 static void set_exception_types(oop method, oop value);
590
591 static int slot(oop reflect);
592 static void set_slot(oop reflect, int value);
593
594 static int modifiers(oop method);
595 static void set_modifiers(oop method, int value);
596
597 static bool has_signature_field();
598 static oop signature(oop method);
599 static void set_signature(oop method, oop value);
600
601 static bool has_annotations_field();
602 static oop annotations(oop method);
603 static void set_annotations(oop method, oop value);
604
605 static bool has_parameter_annotations_field();
606 static oop parameter_annotations(oop method);
607 static void set_parameter_annotations(oop method, oop value);
608
609 static bool has_annotation_default_field();
610 static oop annotation_default(oop method);
611 static void set_annotation_default(oop method, oop value);
612
613 static bool has_type_annotations_field();
614 static oop type_annotations(oop method);
615 static void set_type_annotations(oop method, oop value);
616
617 // Debugging
618 friend class JavaClasses;
619 };
620
621
622 // Interface to java.lang.reflect.Constructor objects
623
624 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
625 private:
626 // Note that to reduce dependencies on the JDK we compute these
627 // offsets at run-time.
628 static int clazz_offset;
629 static int parameterTypes_offset;
630 static int exceptionTypes_offset;
631 static int slot_offset;
632 static int modifiers_offset;
633 static int signature_offset;
634 static int annotations_offset;
635 static int parameter_annotations_offset;
636 static int type_annotations_offset;
637
638 static void compute_offsets();
639
640 public:
641 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
642
643 // Allocation
644 static Handle create(TRAPS);
645
646 // Accessors
647 static oop clazz(oop reflect);
648 static void set_clazz(oop reflect, oop value);
649
650 static oop parameter_types(oop constructor);
651 static void set_parameter_types(oop constructor, oop value);
652
653 static oop exception_types(oop constructor);
654 static void set_exception_types(oop constructor, oop value);
655
656 static int slot(oop reflect);
657 static void set_slot(oop reflect, int value);
658
659 static int modifiers(oop constructor);
660 static void set_modifiers(oop constructor, int value);
661
662 static bool has_signature_field();
663 static oop signature(oop constructor);
664 static void set_signature(oop constructor, oop value);
665
666 static bool has_annotations_field();
667 static oop annotations(oop constructor);
668 static void set_annotations(oop constructor, oop value);
669
670 static bool has_parameter_annotations_field();
671 static oop parameter_annotations(oop method);
672 static void set_parameter_annotations(oop method, oop value);
673
674 static bool has_type_annotations_field();
675 static oop type_annotations(oop constructor);
676 static void set_type_annotations(oop constructor, oop value);
677
678 // Debugging
679 friend class JavaClasses;
680 };
681
682
683 // Interface to java.lang.reflect.Field objects
684
685 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
686 private:
687 // Note that to reduce dependencies on the JDK we compute these
688 // offsets at run-time.
689 static int clazz_offset;
690 static int name_offset;
691 static int type_offset;
692 static int slot_offset;
693 static int modifiers_offset;
694 static int signature_offset;
695 static int annotations_offset;
696 static int type_annotations_offset;
697
698 static void compute_offsets();
699
700 public:
701 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
702
703 // Allocation
704 static Handle create(TRAPS);
705
706 // Accessors
707 static oop clazz(oop reflect);
708 static void set_clazz(oop reflect, oop value);
709
710 static oop name(oop field);
711 static void set_name(oop field, oop value);
712
713 static oop type(oop field);
714 static void set_type(oop field, oop value);
715
716 static int slot(oop reflect);
717 static void set_slot(oop reflect, int value);
718
719 static int modifiers(oop field);
720 static void set_modifiers(oop field, int value);
721
722 static bool has_signature_field();
723 static oop signature(oop constructor);
724 static void set_signature(oop constructor, oop value);
725
726 static bool has_annotations_field();
727 static oop annotations(oop constructor);
728 static void set_annotations(oop constructor, oop value);
729
730 static bool has_parameter_annotations_field();
731 static oop parameter_annotations(oop method);
732 static void set_parameter_annotations(oop method, oop value);
733
734 static bool has_annotation_default_field();
735 static oop annotation_default(oop method);
736 static void set_annotation_default(oop method, oop value);
737
738 static bool has_type_annotations_field();
739 static oop type_annotations(oop field);
740 static void set_type_annotations(oop field, oop value);
741
742 // Debugging
743 friend class JavaClasses;
744 };
745
746 class java_lang_reflect_Parameter {
747 private:
748 // Note that to reduce dependencies on the JDK we compute these
749 // offsets at run-time.
750 static int name_offset;
751 static int modifiers_offset;
752 static int index_offset;
753 static int executable_offset;
754
755 static void compute_offsets();
756
757 public:
758 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
759
760 // Allocation
761 static Handle create(TRAPS);
762
763 // Accessors
764 static oop name(oop field);
765 static void set_name(oop field, oop value);
766
767 static int index(oop reflect);
768 static void set_index(oop reflect, int value);
769
770 static int modifiers(oop reflect);
771 static void set_modifiers(oop reflect, int value);
772
773 static oop executable(oop constructor);
774 static void set_executable(oop constructor, oop value);
775
776 friend class JavaClasses;
777 };
778
779 #define MODULE_INJECTED_FIELDS(macro) \
780 macro(java_lang_Module, module_entry, intptr_signature, false)
781
782 class java_lang_Module {
783 private:
784 static int loader_offset;
785 static int name_offset;
786 static int _module_entry_offset;
787 static void compute_offsets();
788
789 public:
790 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
791
792 // Allocation
793 static Handle create(Handle loader, Handle module_name, TRAPS);
794
795 // Testers
796 static bool is_instance(oop obj);
797
798 // Accessors
799 static oop loader(oop module);
800 static void set_loader(oop module, oop value);
801
802 static oop name(oop module);
803 static void set_name(oop module, oop value);
804
805 static ModuleEntry* module_entry(oop module);
806 static void set_module_entry(oop module, ModuleEntry* module_entry);
807
808 friend class JavaClasses;
809 };
810
811 // Interface to jdk.internal.reflect.ConstantPool objects
812 class reflect_ConstantPool {
813 private:
814 // Note that to reduce dependencies on the JDK we compute these
815 // offsets at run-time.
816 static int _oop_offset;
817
818 static void compute_offsets();
819
820 public:
821 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
822
823 // Allocation
824 static Handle create(TRAPS);
825
826 // Accessors
827 static void set_cp(oop reflect, ConstantPool* value);
828 static int oop_offset() {
829 return _oop_offset;
830 }
831
832 static ConstantPool* get_cp(oop reflect);
833
834 // Debugging
835 friend class JavaClasses;
836 };
837
838 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
839 class reflect_UnsafeStaticFieldAccessorImpl {
840 private:
841 static int _base_offset;
842 static void compute_offsets();
843
844 public:
845 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
846
847 static int base_offset() {
848 return _base_offset;
849 }
850
851 // Debugging
852 friend class JavaClasses;
853 };
854
855 // Interface to java.lang primitive type boxing objects:
856 // - java.lang.Boolean
857 // - java.lang.Character
858 // - java.lang.Float
859 // - java.lang.Double
860 // - java.lang.Byte
861 // - java.lang.Short
862 // - java.lang.Integer
863 // - java.lang.Long
864
865 // This could be separated out into 8 individual classes.
866
867 class java_lang_boxing_object: AllStatic {
868 private:
869 enum {
870 hc_value_offset = 0
871 };
872 static int value_offset;
873 static int long_value_offset;
874
875 static oop initialize_and_allocate(BasicType type, TRAPS);
876 public:
877 // Allocation. Returns a boxed value, or NULL for invalid type.
878 static oop create(BasicType type, jvalue* value, TRAPS);
879 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
880 static BasicType get_value(oop box, jvalue* value);
881 static BasicType set_value(oop box, jvalue* value);
882 static BasicType basic_type(oop box);
883 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
884 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
885 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
886 static void print(BasicType type, jvalue* value, outputStream* st);
887
888 static int value_offset_in_bytes(BasicType type) {
889 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
890 value_offset;
891 }
892
893 // Debugging
894 friend class JavaClasses;
895 };
896
897
898
899 // Interface to java.lang.ref.Reference objects
900
901 class java_lang_ref_Reference: AllStatic {
902 public:
903 enum {
904 hc_referent_offset = 0,
905 hc_queue_offset = 1,
906 hc_next_offset = 2,
907 hc_discovered_offset = 3 // Is not last, see SoftRefs.
908 };
909
910 static int referent_offset;
911 static int queue_offset;
912 static int next_offset;
913 static int discovered_offset;
914
915 // Accessors
916 static inline oop referent(oop ref);
917 static inline void set_referent(oop ref, oop value);
918 static inline void set_referent_raw(oop ref, oop value);
919 static inline HeapWord* referent_addr_raw(oop ref);
920 static inline oop next(oop ref);
921 static inline void set_next(oop ref, oop value);
922 static inline void set_next_raw(oop ref, oop value);
923 static inline HeapWord* next_addr_raw(oop ref);
924 static inline oop discovered(oop ref);
925 static inline void set_discovered(oop ref, oop value);
926 static inline void set_discovered_raw(oop ref, oop value);
927 static inline HeapWord* discovered_addr_raw(oop ref);
928 static inline oop queue(oop ref);
929 static inline void set_queue(oop ref, oop value);
930 static bool is_referent_field(oop obj, ptrdiff_t offset);
931 static inline bool is_phantom(oop ref);
932 };
933
934
935 // Interface to java.lang.ref.SoftReference objects
936
937 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
938 public:
939 static int timestamp_offset;
940 static int static_clock_offset;
941
942 // Accessors
943 static jlong timestamp(oop ref);
944
945 // Accessors for statics
946 static jlong clock();
947 static void set_clock(jlong value);
948
949 static void compute_offsets();
950 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
951 };
952
953 // Interface to java.lang.Continuation objects
954 class java_lang_Continuation: AllStatic {
955 friend class JavaClasses;
956 private:
957 static void compute_offsets();
958 public:
959 enum {
960 hc_fp_offset = 0,
961 hc_sp_offset = 11,
962 hc_entrySP_offset = 1,
963 hc_entryFP_offset = 3,
964 hc_target_offset = 13,
965 hc_parent_offset = 14,
966 hc_stack_offset = 15,
967 };
968 static int scope_offset;
969 static int target_offset;
970 static int parent_offset;
971 static int entrySP_offset;
972 static int entryFP_offset;
973 static int entryPC_offset;
974 static int stack_offset;
975 static int maxSize_offset;
976 static int numFrames_offset;
977 static int numInterpretedFrames_offset;
978 static int refStack_offset;
979 static int fp_offset;
980 static int sp_offset;
981 static int pc_offset;
982 static int refSP_offset;
983 static int flags_offset;
984 // Accessors
985 static inline oop scope(oop ref);
986 static inline oop target(oop ref);
987 static inline oop parent(oop ref);
988 static inline typeArrayOop stack(oop ref);
989 static inline objArrayOop refStack(oop ref);
990 static inline jlong fp(oop ref);
991 static inline void set_fp(oop ref, const jlong i);
992 static inline jint sp(oop ref);
993 static inline void set_sp(oop ref, const jint i);
994 static inline void* pc(oop ref);
995 static inline void set_pc(oop ref, const void* pc);
996 static inline jint refSP(oop ref);
997 static inline void set_refSP(oop ref, jint i);
998 static inline intptr_t* entrySP(oop ref);
999 static inline void set_entrySP(oop ref, intptr_t* sp);
1000 static inline intptr_t* entryFP(oop ref);
1001 static inline void set_entryFP(oop ref, intptr_t* fp);
1002 static inline address entryPC(oop ref);
1003 static inline void set_entryPC(oop ref, address pc);
1004 static inline jint maxSize(oop ref);
1005 static inline void set_maxSize(oop ref, jint i);
1006 static inline jshort numFrames(oop ref);
1007 static inline void set_numFrames(oop ref, jshort i);
1008 static inline jshort numInterpretedFrames(oop ref);
1009 static inline void set_numInterpretedFrames(oop ref, jshort i);
1010 static unsigned char flags(oop ref);
1011 static void set_flags(oop ref, unsigned char flags);
1012 static inline int stack_size(oop ref);
1013 static inline void* stack_base(oop ref);
1014 static inline HeapWord* refStack_base(oop ref);
1015 static bool on_local_stack(oop ref, address adr);
1016 };
1017
1018 // Interface to java.lang.invoke.MethodHandle objects
1019
1020 class MethodHandleEntry;
1021
1022 class java_lang_invoke_MethodHandle: AllStatic {
1023 friend class JavaClasses;
1024
1025 private:
1026 static int _type_offset; // the MethodType of this MH
1027 static int _form_offset; // the LambdaForm of this MH
1028
1029 static void compute_offsets();
1030
1031 public:
1032 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1033
1034 // Accessors
1035 static oop type(oop mh);
1036 static void set_type(oop mh, oop mtype);
1037
1038 static oop form(oop mh);
1039 static void set_form(oop mh, oop lform);
1040
1041 // Testers
1042 static bool is_subclass(Klass* klass) {
1043 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1044 }
1045 static bool is_instance(oop obj);
1046
1047 // Accessors for code generation:
1048 static int type_offset_in_bytes() { return _type_offset; }
1049 static int form_offset_in_bytes() { return _form_offset; }
1050 };
1051
1052 // Interface to java.lang.invoke.DirectMethodHandle objects
1053
1054 class java_lang_invoke_DirectMethodHandle: AllStatic {
1055 friend class JavaClasses;
1056
1057 private:
1058 static int _member_offset; // the MemberName of this DMH
1059
1060 static void compute_offsets();
1061
1062 public:
1063 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1064
1065 // Accessors
1066 static oop member(oop mh);
1067
1068 // Testers
1069 static bool is_subclass(Klass* klass) {
1070 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1071 }
1072 static bool is_instance(oop obj);
1073
1074 // Accessors for code generation:
1075 static int member_offset_in_bytes() { return _member_offset; }
1076 };
1077
1078 // Interface to java.lang.invoke.LambdaForm objects
1079 // (These are a private interface for managing adapter code generation.)
1080
1081 class java_lang_invoke_LambdaForm: AllStatic {
1082 friend class JavaClasses;
1083
1084 private:
1085 static int _vmentry_offset; // type is MemberName
1086
1087 static void compute_offsets();
1088
1089 public:
1090 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1091
1092 // Accessors
1093 static oop vmentry(oop lform);
1094 static void set_vmentry(oop lform, oop invoker);
1095
1096 // Testers
1097 static bool is_subclass(Klass* klass) {
1098 return SystemDictionary::LambdaForm_klass() != NULL &&
1099 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1100 }
1101 static bool is_instance(oop obj);
1102
1103 // Accessors for code generation:
1104 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1105 };
1106
1107
1108 // Interface to java.lang.invoke.MemberName objects
1109 // (These are a private interface for Java code to query the class hierarchy.)
1110
1111 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1112 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1113 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1114
1115 class java_lang_invoke_ResolvedMethodName : AllStatic {
1116 friend class JavaClasses;
1117
1118 static int _vmtarget_offset;
1119 static int _vmholder_offset;
1120
1121 static void compute_offsets();
1122 public:
1123 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1124
1125 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1126
1127 static Method* vmtarget(oop resolved_method);
1128 static void set_vmtarget(oop resolved_method, Method* method);
1129
1130 // find or create resolved member name
1131 static oop find_resolved_method(const methodHandle& m, TRAPS);
1132
1133 static bool is_instance(oop resolved_method);
1134 };
1135
1136
1137 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1138 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1139
1140
1141 class java_lang_invoke_MemberName: AllStatic {
1142 friend class JavaClasses;
1143
1144 private:
1145 // From java.lang.invoke.MemberName:
1146 // private Class<?> clazz; // class in which the method is defined
1147 // private String name; // may be null if not yet materialized
1148 // private Object type; // may be null if not yet materialized
1149 // private int flags; // modifier bits; see reflect.Modifier
1150 // private ResolvedMethodName method; // holds VM-specific target value
1151 // private intptr_t vmindex; // member index within class or interface
1152 static int _clazz_offset;
1153 static int _name_offset;
1154 static int _type_offset;
1155 static int _flags_offset;
1156 static int _method_offset;
1157 static int _vmindex_offset;
1158
1159 static void compute_offsets();
1160
1161 public:
1162 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1163 // Accessors
1164 static oop clazz(oop mname);
1165 static void set_clazz(oop mname, oop clazz);
1166
1167 static oop type(oop mname);
1168 static void set_type(oop mname, oop type);
1169
1170 static oop name(oop mname);
1171 static void set_name(oop mname, oop name);
1172
1173 static int flags(oop mname);
1174 static void set_flags(oop mname, int flags);
1175
1176 // Link through ResolvedMethodName field to get Method*
1177 static Method* vmtarget(oop mname);
1178 static void set_method(oop mname, oop method);
1179
1180 static intptr_t vmindex(oop mname);
1181 static void set_vmindex(oop mname, intptr_t index);
1182
1183 // Testers
1184 static bool is_subclass(Klass* klass) {
1185 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1186 }
1187 static bool is_instance(oop obj);
1188
1189 static bool is_method(oop obj);
1190
1191 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1192 enum {
1193 MN_IS_METHOD = 0x00010000, // method (not constructor)
1194 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1195 MN_IS_FIELD = 0x00040000, // field
1196 MN_IS_TYPE = 0x00080000, // nested type
1197 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1198 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1199 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1200 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1201 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1202 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1203 };
1204
1205 // Accessors for code generation:
1206 static int clazz_offset_in_bytes() { return _clazz_offset; }
1207 static int type_offset_in_bytes() { return _type_offset; }
1208 static int name_offset_in_bytes() { return _name_offset; }
1209 static int flags_offset_in_bytes() { return _flags_offset; }
1210 static int method_offset_in_bytes() { return _method_offset; }
1211 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1212 };
1213
1214
1215 // Interface to java.lang.invoke.MethodType objects
1216
1217 class java_lang_invoke_MethodType: AllStatic {
1218 friend class JavaClasses;
1219
1220 private:
1221 static int _rtype_offset;
1222 static int _ptypes_offset;
1223
1224 static void compute_offsets();
1225
1226 public:
1227 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1228 // Accessors
1229 static oop rtype(oop mt);
1230 static objArrayOop ptypes(oop mt);
1231
1232 static oop ptype(oop mt, int index);
1233 static int ptype_count(oop mt);
1234
1235 static int ptype_slot_count(oop mt); // extra counts for long/double
1236 static int rtype_slot_count(oop mt); // extra counts for long/double
1237
1238 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1239 static void print_signature(oop mt, outputStream* st);
1240
1241 static bool is_instance(oop obj);
1242
1243 static bool equals(oop mt1, oop mt2);
1244
1245 // Accessors for code generation:
1246 static int rtype_offset_in_bytes() { return _rtype_offset; }
1247 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1248 };
1249
1250
1251 // Interface to java.lang.invoke.CallSite objects
1252
1253 class java_lang_invoke_CallSite: AllStatic {
1254 friend class JavaClasses;
1255
1256 private:
1257 static int _target_offset;
1258 static int _context_offset;
1259
1260 static void compute_offsets();
1261
1262 public:
1263 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1264 // Accessors
1265 static oop target( oop site);
1266 static void set_target( oop site, oop target);
1267 static void set_target_volatile( oop site, oop target);
1268
1269 static oop context(oop site);
1270
1271 // Testers
1272 static bool is_subclass(Klass* klass) {
1273 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1274 }
1275 static bool is_instance(oop obj);
1276
1277 // Accessors for code generation:
1278 static int target_offset_in_bytes() { return _target_offset; }
1279 };
1280
1281 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1282
1283 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1284 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1285
1286 class DependencyContext;
1287
1288 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1289 friend class JavaClasses;
1290
1291 private:
1292 static int _vmdependencies_offset;
1293
1294 static void compute_offsets();
1295
1296 public:
1297 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1298 // Accessors
1299 static DependencyContext vmdependencies(oop context);
1300
1301 // Testers
1302 static bool is_subclass(Klass* klass) {
1303 return klass->is_subclass_of(SystemDictionary::Context_klass());
1304 }
1305 static bool is_instance(oop obj);
1306 };
1307
1308 // Interface to java.security.AccessControlContext objects
1309
1310 class java_security_AccessControlContext: AllStatic {
1311 private:
1312 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1313 // so we compute the offsets at startup rather than hard-wiring them.
1314 static int _context_offset;
1315 static int _privilegedContext_offset;
1316 static int _isPrivileged_offset;
1317 static int _isAuthorized_offset;
1318
1319 static void compute_offsets();
1320 public:
1321 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1322 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1323
1324 static bool is_authorized(Handle context);
1325
1326 // Debugging/initialization
1327 friend class JavaClasses;
1328 };
1329
1330
1331 // Interface to java.lang.ClassLoader objects
1332
1333 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1334 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1335
1336 class java_lang_ClassLoader : AllStatic {
1337 private:
1338 static int _loader_data_offset;
1339 static bool offsets_computed;
1340 static int parent_offset;
1341 static int parallelCapable_offset;
1342 static int name_offset;
1343 static int unnamedModule_offset;
1344
1345 public:
1346 static void compute_offsets();
1347 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1348
1349 static ClassLoaderData* loader_data(oop loader);
1350 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1351
1352 static oop parent(oop loader);
1353 static oop name(oop loader);
1354 static bool isAncestor(oop loader, oop cl);
1355
1356 // Support for parallelCapable field
1357 static bool parallelCapable(oop the_class_mirror);
1358
1359 static bool is_trusted_loader(oop loader);
1360
1361 // Return true if this is one of the class loaders associated with
1362 // the generated bytecodes for reflection.
1363 static bool is_reflection_class_loader(oop loader);
1364
1365 // Fix for 4474172
1366 static oop non_reflection_class_loader(oop loader);
1367
1368 // Testers
1369 static bool is_subclass(Klass* klass) {
1370 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1371 }
1372 static bool is_instance(oop obj);
1373
1374 static oop unnamedModule(oop loader);
1375
1376 // Debugging
1377 friend class JavaClasses;
1378 friend class ClassFileParser; // access to number_of_fake_fields
1379
1380 // Describe ClassLoader for exceptions, tracing ...
1381 // Prints "<name>" (instance of <classname>, child of "<name>" <classname>).
1382 // If a classloader has no name, it prints <unnamed> instead. The output
1383 // for well known loaders (system/platform) is abbreviated.
1384 static const char* describe_external(const oop loader);
1385 };
1386
1387
1388 // Interface to java.lang.System objects
1389
1390 class java_lang_System : AllStatic {
1391 private:
1392 static int static_in_offset;
1393 static int static_out_offset;
1394 static int static_err_offset;
1395 static int static_security_offset;
1396
1397 public:
1398 static int in_offset_in_bytes();
1399 static int out_offset_in_bytes();
1400 static int err_offset_in_bytes();
1401
1402 static bool has_security_manager();
1403
1404 static void compute_offsets();
1405 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1406
1407 // Debugging
1408 friend class JavaClasses;
1409 };
1410
1411
1412 // Interface to java.lang.StackTraceElement objects
1413
1414 class java_lang_StackTraceElement: AllStatic {
1415 private:
1416 static int declaringClassObject_offset;
1417 static int classLoaderName_offset;
1418 static int moduleName_offset;
1419 static int moduleVersion_offset;
1420 static int declaringClass_offset;
1421 static int methodName_offset;
1422 static int fileName_offset;
1423 static int lineNumber_offset;
1424
1425 // Setters
1426 static void set_classLoaderName(oop element, oop value);
1427 static void set_moduleName(oop element, oop value);
1428 static void set_moduleVersion(oop element, oop value);
1429 static void set_declaringClass(oop element, oop value);
1430 static void set_methodName(oop element, oop value);
1431 static void set_fileName(oop element, oop value);
1432 static void set_lineNumber(oop element, int value);
1433 static void set_declaringClassObject(oop element, oop value);
1434
1435 public:
1436 // Create an instance of StackTraceElement
1437 static oop create(const methodHandle& method, int bci, TRAPS);
1438
1439 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1440 int version, int bci, Symbol* name, TRAPS);
1441
1442 static void compute_offsets();
1443 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1444
1445 // Debugging
1446 friend class JavaClasses;
1447 };
1448
1449
1450 class Backtrace: AllStatic {
1451 public:
1452 // Helper backtrace functions to store bci|version together.
1453 static int merge_bci_and_version(int bci, int version);
1454 static int merge_mid_and_cpref(int mid, int cpref);
1455 static int bci_at(unsigned int merged);
1456 static int version_at(unsigned int merged);
1457 static int mid_at(unsigned int merged);
1458 static int cpref_at(unsigned int merged);
1459 static int get_line_number(const methodHandle& method, int bci);
1460 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1461
1462 // Debugging
1463 friend class JavaClasses;
1464 };
1465
1466 // Interface to java.lang.StackFrameInfo objects
1467
1468 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1469 macro(java_lang_StackFrameInfo, version, short_signature, false)
1470
1471 class java_lang_StackFrameInfo: AllStatic {
1472 private:
1473 static int _memberName_offset;
1474 static int _bci_offset;
1475 static int _version_offset;
1476
1477 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1478
1479 public:
1480 // Setters
1481 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1482 static void set_bci(oop info, int value);
1483
1484 static void set_version(oop info, short value);
1485
1486 static void compute_offsets();
1487 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1488
1489 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1490
1491 // Debugging
1492 friend class JavaClasses;
1493 };
1494
1495 class java_lang_LiveStackFrameInfo: AllStatic {
1496 private:
1497 static int _monitors_offset;
1498 static int _locals_offset;
1499 static int _operands_offset;
1500 static int _mode_offset;
1501
1502 public:
1503 static void set_monitors(oop info, oop value);
1504 static void set_locals(oop info, oop value);
1505 static void set_operands(oop info, oop value);
1506 static void set_mode(oop info, int value);
1507
1508 static void compute_offsets();
1509 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1510
1511 // Debugging
1512 friend class JavaClasses;
1513 };
1514
1515 // Interface to java.lang.AssertionStatusDirectives objects
1516
1517 class java_lang_AssertionStatusDirectives: AllStatic {
1518 private:
1519 static int classes_offset;
1520 static int classEnabled_offset;
1521 static int packages_offset;
1522 static int packageEnabled_offset;
1523 static int deflt_offset;
1524
1525 public:
1526 // Setters
1527 static void set_classes(oop obj, oop val);
1528 static void set_classEnabled(oop obj, oop val);
1529 static void set_packages(oop obj, oop val);
1530 static void set_packageEnabled(oop obj, oop val);
1531 static void set_deflt(oop obj, bool val);
1532
1533 static void compute_offsets();
1534 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1535
1536 // Debugging
1537 friend class JavaClasses;
1538 };
1539
1540
1541 class java_nio_Buffer: AllStatic {
1542 private:
1543 static int _limit_offset;
1544
1545 public:
1546 static int limit_offset();
1547 static void compute_offsets();
1548 static void serialize(SerializeClosure* f) NOT_CDS_RETURN;
1549 };
1550
1551 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1552 private:
1553 static int _owner_offset;
1554 public:
1555 static void initialize(TRAPS);
1556 static oop get_owner_threadObj(oop obj);
1557 };
1558
1559 // Use to declare fields that need to be injected into Java classes
1560 // for the JVM to use. The name_index and signature_index are
1561 // declared in vmSymbols. The may_be_java flag is used to declare
1562 // fields that might already exist in Java but should be injected if
1563 // they don't. Otherwise the field is unconditionally injected and
1564 // the JVM uses the injected one. This is to ensure that name
1565 // collisions don't occur. In general may_be_java should be false
1566 // unless there's a good reason.
1567
1568 class InjectedField {
1569 public:
1570 const SystemDictionary::WKID klass_id;
1571 const vmSymbols::SID name_index;
1572 const vmSymbols::SID signature_index;
1573 const bool may_be_java;
1574
1575
1576 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1577 Symbol* name() const { return lookup_symbol(name_index); }
1578 Symbol* signature() const { return lookup_symbol(signature_index); }
1579
1580 int compute_offset();
1581
1582 // Find the Symbol for this index
1583 static Symbol* lookup_symbol(int symbol_index) {
1584 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1585 }
1586 };
1587
1588 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1589 klass##_##name##_enum,
1590
1591 #define ALL_INJECTED_FIELDS(macro) \
1592 CLASS_INJECTED_FIELDS(macro) \
1593 CLASSLOADER_INJECTED_FIELDS(macro) \
1594 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1595 MEMBERNAME_INJECTED_FIELDS(macro) \
1596 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1597 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1598 MODULE_INJECTED_FIELDS(macro)
1599
1600 // Interface to hard-coded offset checking
1601
1602 class JavaClasses : AllStatic {
1603 private:
1604
1605 static InjectedField _injected_fields[];
1606
1607 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1608 public:
1609 enum InjectedFieldID {
1610 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1611 MAX_enum
1612 };
1613
1614 static int compute_injected_offset(InjectedFieldID id);
1615
1616 static void compute_hard_coded_offsets();
1617 static void compute_offsets();
1618 static void check_offsets() PRODUCT_RETURN;
1619
1620 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1621 };
1622
1623 #undef DECLARE_INJECTED_FIELD_ENUM
1624
1625 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP