1 /*
2 * Copyright (c) 1997, 2019, 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.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_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
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 //end
85
86 #define BASIC_JAVA_CLASSES_DO(f) \
87 BASIC_JAVA_CLASSES_DO_PART1(f) \
88 BASIC_JAVA_CLASSES_DO_PART2(f)
89
90 // Interface to java.lang.String objects
91
92 class java_lang_String : AllStatic {
93 private:
94 static int value_offset;
95 static int hash_offset;
96 static int coder_offset;
97
98 static bool initialized;
99
100 static Handle basic_create(int length, bool byte_arr, TRAPS);
101
102 static inline void set_coder(oop string, jbyte coder);
103
104 public:
105
106 // Coders
107 enum Coder {
108 CODER_LATIN1 = 0,
109 CODER_UTF16 = 1
110 };
111
112 static void compute_offsets();
113 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
114
115 // Instance creation
116 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
117 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
118 static Handle create_from_str(const char* utf8_str, TRAPS);
119 static oop create_oop_from_str(const char* utf8_str, TRAPS);
120 static Handle create_from_symbol(Symbol* symbol, TRAPS);
121 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
122 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
123
124 static void set_compact_strings(bool value);
125
126 static int value_offset_in_bytes() {
127 assert(initialized && (value_offset > 0), "Must be initialized");
128 return value_offset;
129 }
130 static int hash_offset_in_bytes() {
131 assert(initialized && (hash_offset > 0), "Must be initialized");
132 return hash_offset;
133 }
134 static int coder_offset_in_bytes() {
135 assert(initialized && (coder_offset > 0), "Must be initialized");
136 return coder_offset;
137 }
138
139 static inline void set_value_raw(oop string, typeArrayOop buffer);
140 static inline void set_value(oop string, typeArrayOop buffer);
141 static inline void set_hash(oop string, unsigned int hash);
142
143 // Accessors
144 static inline typeArrayOop value(oop java_string);
145 static inline typeArrayOop value_no_keepalive(oop java_string);
146 static inline unsigned int hash(oop java_string);
147 static inline bool is_latin1(oop java_string);
148 static inline int length(oop java_string);
149 static inline int length(oop java_string, typeArrayOop string_value);
150 static int utf8_length(oop java_string);
151 static int utf8_length(oop java_string, typeArrayOop string_value);
152
153 // String converters
154 static char* as_utf8_string(oop java_string);
155 static char* as_utf8_string(oop java_string, char* buf, int buflen);
156 static char* as_utf8_string(oop java_string, int start, int len);
157 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
158 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
159 static char* as_platform_dependent_str(Handle java_string, TRAPS);
160 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
161 // produce an ascii string with all other values quoted using \u####
162 static char* as_quoted_ascii(oop java_string);
163
164 // Compute the hash value for a java.lang.String object which would
165 // contain the characters passed in.
166 //
167 // As the hash value used by the String object itself, in
168 // String.hashCode(). This value is normally calculated in Java code
169 // in the String.hashCode method(), but is precomputed for String
170 // objects in the shared archive file.
171 // hash P(31) from Kernighan & Ritchie
172 //
173 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
174 static unsigned int hash_code(const jchar* s, int len) {
175 unsigned int h = 0;
176 while (len-- > 0) {
177 h = 31*h + (unsigned int) *s;
178 s++;
179 }
180 return h;
181 }
182
183 static unsigned int hash_code(const jbyte* s, int len) {
184 unsigned int h = 0;
185 while (len-- > 0) {
186 h = 31*h + (((unsigned int) *s) & 0xFF);
187 s++;
188 }
189 return h;
190 }
191
192 static unsigned int hash_code(oop java_string);
193
194 static bool equals(oop java_string, const jchar* chars, int len);
195 static bool equals(oop str1, oop str2);
196 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
197
198 // Conversion between '.' and '/' formats
199 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
200 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
201
202 // Conversion
203 static Symbol* as_symbol(oop java_string, TRAPS);
204 static Symbol* as_symbol_or_null(oop java_string);
205
206 // Testers
207 static bool is_instance(oop obj);
208 static inline bool is_instance_inlined(oop obj);
209
210 // Debugging
211 static void print(oop java_string, outputStream* st);
212 friend class JavaClasses;
213 friend class StringTable;
214 };
215
216
217 // Interface to java.lang.Class objects
218
219 #define CLASS_INJECTED_FIELDS(macro) \
220 macro(java_lang_Class, klass, intptr_signature, false) \
221 macro(java_lang_Class, array_klass, intptr_signature, false) \
222 macro(java_lang_Class, oop_size, int_signature, false) \
223 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
224 macro(java_lang_Class, protection_domain, object_signature, false) \
225 macro(java_lang_Class, signers, object_signature, false) \
226 macro(java_lang_Class, source_file, object_signature, false) \
227
228 class java_lang_Class : AllStatic {
229 friend class VMStructs;
230 friend class JVMCIVMStructs;
231
232 private:
233 // The fake offsets are added by the class loader when java.lang.Class is loaded
234
235 static int _klass_offset;
236 static int _array_klass_offset;
237
238 static int _oop_size_offset;
239 static int _static_oop_field_count_offset;
240
241 static int _protection_domain_offset;
242 static int _init_lock_offset;
243 static int _signers_offset;
244 static int _class_loader_offset;
245 static int _module_offset;
246 static int _component_mirror_offset;
247 static int _name_offset;
248 static int _source_file_offset;
249
250 static bool offsets_computed;
251 static int classRedefinedCount_offset;
252
253 static GrowableArray<Klass*>* _fixup_mirror_list;
254 static GrowableArray<Klass*>* _fixup_module_field_list;
255
256 static void set_init_lock(oop java_class, oop init_lock);
257 static void set_protection_domain(oop java_class, oop protection_domain);
258 static void set_class_loader(oop java_class, oop class_loader);
259 static void set_component_mirror(oop java_class, oop comp_mirror);
260 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
261 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
262 public:
263 static void allocate_fixup_lists();
264 static void compute_offsets();
265
266 // Instance creation
267 static void create_mirror(Klass* k, Handle class_loader, Handle module,
268 Handle protection_domain, TRAPS);
269 static void fixup_mirror(Klass* k, TRAPS);
270 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
271
272 // Archiving
273 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
274 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
275 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
276 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
277 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
278 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
279 Handle protection_domain,
280 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
281
282 static void fixup_module_field(Klass* k, Handle module);
283
284 // Conversion
285 static Klass* as_Klass(oop java_class);
286 static Klass* as_Klass_raw(oop java_class);
287 static void set_klass(oop java_class, Klass* klass);
288 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
289 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
290 static void print_signature(oop java_class, outputStream *st);
291 static const char* as_external_name(oop java_class);
292 // Testing
293 static bool is_instance(oop obj);
294
295 static bool is_primitive(oop java_class);
296 static BasicType primitive_type(oop java_class);
297 static oop primitive_mirror(BasicType t);
298 // JVM_NewArray support
299 static Klass* array_klass_acquire(oop java_class);
300 static void release_set_array_klass(oop java_class, Klass* klass);
301 // compiler support for class operations
302 static int klass_offset_in_bytes() { return _klass_offset; }
303 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
304 // Support for classRedefinedCount field
305 static int classRedefinedCount(oop the_class_mirror);
306 static void set_classRedefinedCount(oop the_class_mirror, int value);
307
308 // Support for embedded per-class oops
309 static oop protection_domain(oop java_class);
310 static oop init_lock(oop java_class);
311 static oop component_mirror(oop java_class);
312 static objArrayOop signers(oop java_class);
313 static void set_signers(oop java_class, objArrayOop signers);
314
315 static oop class_loader(oop java_class);
316 static void set_module(oop java_class, oop module);
317 static oop module(oop java_class);
318
319 static oop name(Handle java_class, TRAPS);
320
321 static oop source_file(oop java_class);
322 static void set_source_file(oop java_class, oop source_file);
323
324 static int oop_size(oop java_class);
325 static int oop_size_raw(oop java_class);
326 static void set_oop_size(HeapWord* java_class, int size);
327 static int static_oop_field_count(oop java_class);
328 static int static_oop_field_count_raw(oop java_class);
329 static void set_static_oop_field_count(oop java_class, int size);
330
331 static GrowableArray<Klass*>* fixup_mirror_list() {
332 return _fixup_mirror_list;
333 }
334 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
335 _fixup_mirror_list = v;
336 }
337
338 static GrowableArray<Klass*>* fixup_module_field_list() {
339 return _fixup_module_field_list;
340 }
341 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
342 _fixup_module_field_list = v;
343 }
344
345 // Debugging
346 friend class JavaClasses;
347 friend class InstanceKlass; // verification code accesses offsets
348 friend class ClassFileParser; // access to number_of_fake_fields
349 };
350
351 // Interface to java.lang.Thread objects
352
353 class java_lang_Thread : AllStatic {
354 private:
355 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
356 // so we compute the offsets at startup rather than hard-wiring them.
357 static int _name_offset;
358 static int _group_offset;
359 static int _contextClassLoader_offset;
360 static int _inheritedAccessControlContext_offset;
361 static int _priority_offset;
362 static int _eetop_offset;
363 static int _daemon_offset;
364 static int _stillborn_offset;
365 static int _stackSize_offset;
366 static int _tid_offset;
367 static int _thread_status_offset;
368 static int _park_blocker_offset;
369 static int _park_event_offset ;
370
371 static void compute_offsets();
372
373 public:
374 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
375
376 // Instance creation
377 static oop create();
378 // Returns the JavaThread associated with the thread obj
379 static JavaThread* thread(oop java_thread);
380 // Set JavaThread for instance
381 static void set_thread(oop java_thread, JavaThread* thread);
382 // Name
383 static oop name(oop java_thread);
384 static void set_name(oop java_thread, oop name);
385 // Priority
386 static ThreadPriority priority(oop java_thread);
387 static void set_priority(oop java_thread, ThreadPriority priority);
388 // Thread group
389 static oop threadGroup(oop java_thread);
390 // Stillborn
391 static bool is_stillborn(oop java_thread);
392 static void set_stillborn(oop java_thread);
393 // Alive (NOTE: this is not really a field, but provides the correct
394 // definition without doing a Java call)
395 static bool is_alive(oop java_thread);
396 // Daemon
397 static bool is_daemon(oop java_thread);
398 static void set_daemon(oop java_thread);
399 // Context ClassLoader
400 static oop context_class_loader(oop java_thread);
401 // Control context
402 static oop inherited_access_control_context(oop java_thread);
403 // Stack size hint
404 static jlong stackSize(oop java_thread);
405 // Thread ID
406 static jlong thread_id(oop java_thread);
407
408 // Blocker object responsible for thread parking
409 static oop park_blocker(oop java_thread);
410
411 // Pointer to type-stable park handler, encoded as jlong.
412 // Should be set when apparently null
413 // For details, see unsafe.cpp Unsafe_Unpark
414 static jlong park_event(oop java_thread);
415 static bool set_park_event(oop java_thread, jlong ptr);
416
417 // Java Thread Status for JVMTI and M&M use.
418 // This thread status info is saved in threadStatus field of
419 // java.lang.Thread java class.
420 enum ThreadStatus {
421 NEW = 0,
422 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
423 JVMTI_THREAD_STATE_RUNNABLE,
424 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
425 JVMTI_THREAD_STATE_WAITING +
426 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
427 JVMTI_THREAD_STATE_SLEEPING,
428 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
429 JVMTI_THREAD_STATE_WAITING +
430 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
431 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
432 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
433 JVMTI_THREAD_STATE_WAITING +
434 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
435 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
436 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
437 JVMTI_THREAD_STATE_WAITING +
438 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
439 JVMTI_THREAD_STATE_PARKED,
440 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
441 JVMTI_THREAD_STATE_WAITING +
442 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
443 JVMTI_THREAD_STATE_PARKED,
444 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
445 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
446 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
447 };
448 // Write thread status info to threadStatus field of java.lang.Thread.
449 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
450 // Read thread status info from threadStatus field of java.lang.Thread.
451 static ThreadStatus get_thread_status(oop java_thread_oop);
452
453 static const char* thread_status_name(oop java_thread_oop);
454
455 // Debugging
456 friend class JavaClasses;
457 };
458
459 // Interface to java.lang.ThreadGroup objects
460
461 class java_lang_ThreadGroup : AllStatic {
462 private:
463 static int _parent_offset;
464 static int _name_offset;
465 static int _threads_offset;
466 static int _groups_offset;
467 static int _maxPriority_offset;
468 static int _destroyed_offset;
469 static int _daemon_offset;
470 static int _nthreads_offset;
471 static int _ngroups_offset;
472
473 static void compute_offsets();
474
475 public:
476 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
477
478 // parent ThreadGroup
479 static oop parent(oop java_thread_group);
480 // name
481 static const char* name(oop java_thread_group);
482 // ("name as oop" accessor is not necessary)
483 // Number of threads in group
484 static int nthreads(oop java_thread_group);
485 // threads
486 static objArrayOop threads(oop java_thread_group);
487 // Number of threads in group
488 static int ngroups(oop java_thread_group);
489 // groups
490 static objArrayOop groups(oop java_thread_group);
491 // maxPriority in group
492 static ThreadPriority maxPriority(oop java_thread_group);
493 // Destroyed
494 static bool is_destroyed(oop java_thread_group);
495 // Daemon
496 static bool is_daemon(oop java_thread_group);
497 // Debugging
498 friend class JavaClasses;
499 };
500
501
502
503 // Interface to java.lang.Throwable objects
504
505 class java_lang_Throwable: AllStatic {
506 friend class BacktraceBuilder;
507 friend class BacktraceIterator;
508
509 private:
510 // Offsets
511 enum {
512 hc_backtrace_offset = 0,
513 hc_detailMessage_offset = 1,
514 hc_cause_offset = 2, // New since 1.4
515 hc_stackTrace_offset = 3 // New since 1.4
516 };
517 // Trace constants
518 enum {
519 trace_methods_offset = 0,
520 trace_bcis_offset = 1,
521 trace_mirrors_offset = 2,
522 trace_names_offset = 3,
523 trace_next_offset = 4,
524 trace_size = 5,
525 trace_chunk_size = 32
526 };
527
528 static int backtrace_offset;
529 static int detailMessage_offset;
530 static int stackTrace_offset;
531 static int depth_offset;
532 static int static_unassigned_stacktrace_offset;
533
534 // StackTrace (programmatic access, new since 1.4)
535 static void clear_stacktrace(oop throwable);
536 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
537 static void set_stacktrace(oop throwable, oop st_element_array);
538 static oop unassigned_stacktrace();
539
540 public:
541 // Backtrace
542 static oop backtrace(oop throwable);
543 static void set_backtrace(oop throwable, oop value);
544 static int depth(oop throwable);
545 static void set_depth(oop throwable, int value);
546 // Needed by JVMTI to filter out this internal field.
547 static int get_backtrace_offset() { return backtrace_offset;}
548 static int get_detailMessage_offset() { return detailMessage_offset;}
549 // Message
550 static oop message(oop throwable);
551 static void set_message(oop throwable, oop value);
552 static Symbol* detail_message(oop throwable);
553 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
554 static void print_stack_usage(Handle stream);
555
556 static void compute_offsets();
557 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
558
559 // Allocate space for backtrace (created but stack trace not filled in)
560 static void allocate_backtrace(Handle throwable, TRAPS);
561 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
562 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
563 // Fill in current stack trace, can cause GC
564 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
565 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
566 // Programmatic access to stack trace
567 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
568 // Printing
569 static void print(oop throwable, outputStream* st);
570 static void print_stack_trace(Handle throwable, outputStream* st);
571 static void java_printStackTrace(Handle throwable, TRAPS);
572 // Debugging
573 friend class JavaClasses;
574 };
575
576
577 // Interface to java.lang.reflect.AccessibleObject objects
578
579 class java_lang_reflect_AccessibleObject: AllStatic {
580 private:
581 // Note that to reduce dependencies on the JDK we compute these
582 // offsets at run-time.
583 static int override_offset;
584
585 static void compute_offsets();
586
587 public:
588 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
589
590 // Accessors
591 static jboolean override(oop reflect);
592 static void set_override(oop reflect, jboolean value);
593
594 // Debugging
595 friend class JavaClasses;
596 };
597
598
599 // Interface to java.lang.reflect.Method objects
600
601 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
602 private:
603 // Note that to reduce dependencies on the JDK we compute these
604 // offsets at run-time.
605 static int clazz_offset;
606 static int name_offset;
607 static int returnType_offset;
608 static int parameterTypes_offset;
609 static int exceptionTypes_offset;
610 static int slot_offset;
611 static int modifiers_offset;
612 static int signature_offset;
613 static int annotations_offset;
614 static int parameter_annotations_offset;
615 static int annotation_default_offset;
616
617 static void compute_offsets();
618 public:
619 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
620
621 // Allocation
622 static Handle create(TRAPS);
623
624 // Accessors
625 static oop clazz(oop reflect);
626 static void set_clazz(oop reflect, oop value);
627
628 static void set_name(oop method, oop value);
629
630 static oop return_type(oop method);
631 static void set_return_type(oop method, oop value);
632
633 static oop parameter_types(oop method);
634 static void set_parameter_types(oop method, oop value);
635
636 static int slot(oop reflect);
637 static void set_slot(oop reflect, int value);
638
639 static void set_exception_types(oop method, oop value);
640 static void set_modifiers(oop method, int value);
641 static void set_signature(oop method, oop value);
642 static void set_annotations(oop method, oop value);
643 static void set_parameter_annotations(oop method, oop value);
644 static void set_annotation_default(oop method, oop value);
645
646 // Debugging
647 friend class JavaClasses;
648 };
649
650
651 // Interface to java.lang.reflect.Constructor objects
652
653 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
654 private:
655 // Note that to reduce dependencies on the JDK we compute these
656 // offsets at run-time.
657 static int clazz_offset;
658 static int parameterTypes_offset;
659 static int exceptionTypes_offset;
660 static int slot_offset;
661 static int modifiers_offset;
662 static int signature_offset;
663 static int annotations_offset;
664 static int parameter_annotations_offset;
665
666 static void compute_offsets();
667 public:
668 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
669
670 // Allocation
671 static Handle create(TRAPS);
672
673 // Accessors
674 static oop clazz(oop reflect);
675 static void set_clazz(oop reflect, oop value);
676
677 static oop parameter_types(oop constructor);
678 static void set_parameter_types(oop constructor, oop value);
679
680 static int slot(oop reflect);
681 static void set_slot(oop reflect, int value);
682
683 static void set_exception_types(oop constructor, oop value);
684 static void set_modifiers(oop constructor, int value);
685 static void set_signature(oop constructor, oop value);
686 static void set_annotations(oop constructor, oop value);
687 static void set_parameter_annotations(oop method, oop value);
688
689 // Debugging
690 friend class JavaClasses;
691 };
692
693
694 // Interface to java.lang.reflect.Field objects
695
696 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
697 private:
698 // Note that to reduce dependencies on the JDK we compute these
699 // offsets at run-time.
700 static int clazz_offset;
701 static int name_offset;
702 static int type_offset;
703 static int slot_offset;
704 static int modifiers_offset;
705 static int signature_offset;
706 static int annotations_offset;
707
708 static void compute_offsets();
709
710 public:
711 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
712
713 // Allocation
714 static Handle create(TRAPS);
715
716 // Accessors
717 static oop clazz(oop reflect);
718 static void set_clazz(oop reflect, oop value);
719
720 static oop name(oop field);
721 static void set_name(oop field, oop value);
722
723 static oop type(oop field);
724 static void set_type(oop field, oop value);
725
726 static int slot(oop reflect);
727 static void set_slot(oop reflect, int value);
728
729 static int modifiers(oop field);
730 static void set_modifiers(oop field, int value);
731
732 static void set_signature(oop constructor, oop value);
733 static void set_annotations(oop constructor, oop value);
734 static void set_parameter_annotations(oop method, oop value);
735 static void set_annotation_default(oop method, oop value);
736
737 // Debugging
738 friend class JavaClasses;
739 };
740
741 class java_lang_reflect_Parameter {
742 private:
743 // Note that to reduce dependencies on the JDK we compute these
744 // offsets at run-time.
745 static int name_offset;
746 static int modifiers_offset;
747 static int index_offset;
748 static int executable_offset;
749
750 static void compute_offsets();
751
752 public:
753 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
754
755 // Allocation
756 static Handle create(TRAPS);
757
758 // Accessors
759 static oop name(oop field);
760 static void set_name(oop field, oop value);
761
762 static int index(oop reflect);
763 static void set_index(oop reflect, int value);
764
765 static int modifiers(oop reflect);
766 static void set_modifiers(oop reflect, int value);
767
768 static oop executable(oop constructor);
769 static void set_executable(oop constructor, oop value);
770
771 friend class JavaClasses;
772 };
773
774 #define MODULE_INJECTED_FIELDS(macro) \
775 macro(java_lang_Module, module_entry, intptr_signature, false)
776
777 class java_lang_Module {
778 private:
779 static int loader_offset;
780 static int name_offset;
781 static int _module_entry_offset;
782 static void compute_offsets();
783
784 public:
785 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
786
787 // Allocation
788 static Handle create(Handle loader, Handle module_name, TRAPS);
789
790 // Testers
791 static bool is_instance(oop obj);
792
793 // Accessors
794 static oop loader(oop module);
795 static void set_loader(oop module, oop value);
796
797 static oop name(oop module);
798 static void set_name(oop module, oop value);
799
800 static ModuleEntry* module_entry(oop module);
801 static void set_module_entry(oop module, ModuleEntry* module_entry);
802
803 friend class JavaClasses;
804 };
805
806 // Interface to jdk.internal.reflect.ConstantPool objects
807 class reflect_ConstantPool {
808 private:
809 // Note that to reduce dependencies on the JDK we compute these
810 // offsets at run-time.
811 static int _oop_offset;
812
813 static void compute_offsets();
814
815 public:
816 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
817
818 // Allocation
819 static Handle create(TRAPS);
820
821 // Accessors
822 static void set_cp(oop reflect, ConstantPool* value);
823 static int oop_offset() {
824 return _oop_offset;
825 }
826
827 static ConstantPool* get_cp(oop reflect);
828
829 // Debugging
830 friend class JavaClasses;
831 };
832
833 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
834 class reflect_UnsafeStaticFieldAccessorImpl {
835 private:
836 static int _base_offset;
837 static void compute_offsets();
838
839 public:
840 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
841
842 static int base_offset() {
843 return _base_offset;
844 }
845
846 // Debugging
847 friend class JavaClasses;
848 };
849
850 // Interface to java.lang primitive type boxing objects:
851 // - java.lang.Boolean
852 // - java.lang.Character
853 // - java.lang.Float
854 // - java.lang.Double
855 // - java.lang.Byte
856 // - java.lang.Short
857 // - java.lang.Integer
858 // - java.lang.Long
859
860 // This could be separated out into 8 individual classes.
861
862 class java_lang_boxing_object: AllStatic {
863 private:
864 enum {
865 hc_value_offset = 0
866 };
867 static int value_offset;
868 static int long_value_offset;
869
870 static oop initialize_and_allocate(BasicType type, TRAPS);
871 public:
872 // Allocation. Returns a boxed value, or NULL for invalid type.
873 static oop create(BasicType type, jvalue* value, TRAPS);
874 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
875 static BasicType get_value(oop box, jvalue* value);
876 static BasicType set_value(oop box, jvalue* value);
877 static BasicType basic_type(oop box);
878 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
879 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
880 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
881 static void print(BasicType type, jvalue* value, outputStream* st);
882
883 static int value_offset_in_bytes(BasicType type) {
884 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
885 value_offset;
886 }
887
888 // Debugging
889 friend class JavaClasses;
890 };
891
892
893
894 // Interface to java.lang.ref.Reference objects
895
896 class java_lang_ref_Reference: AllStatic {
897 public:
898 enum {
899 hc_referent_offset = 0,
900 hc_queue_offset = 1,
901 hc_next_offset = 2,
902 hc_discovered_offset = 3 // Is not last, see SoftRefs.
903 };
904
905 static int referent_offset;
906 static int queue_offset;
907 static int next_offset;
908 static int discovered_offset;
909
910 // Accessors
911 static inline oop referent(oop ref);
912 static inline void set_referent(oop ref, oop value);
913 static inline void set_referent_raw(oop ref, oop value);
914 static inline HeapWord* referent_addr_raw(oop ref);
915 static inline oop next(oop ref);
916 static inline void set_next(oop ref, oop value);
917 static inline void set_next_raw(oop ref, oop value);
918 static inline HeapWord* next_addr_raw(oop ref);
919 static inline oop discovered(oop ref);
920 static inline void set_discovered(oop ref, oop value);
921 static inline void set_discovered_raw(oop ref, oop value);
922 static inline HeapWord* discovered_addr_raw(oop ref);
923 static inline oop queue(oop ref);
924 static inline void set_queue(oop ref, oop value);
925 static bool is_referent_field(oop obj, ptrdiff_t offset);
926 static inline bool is_final(oop ref);
927 static inline bool is_phantom(oop ref);
928 };
929
930
931 // Interface to java.lang.ref.SoftReference objects
932
933 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
934 public:
935 static int timestamp_offset;
936 static int static_clock_offset;
937
938 // Accessors
939 static jlong timestamp(oop ref);
940
941 // Accessors for statics
942 static jlong clock();
943 static void set_clock(jlong value);
944
945 static void compute_offsets();
946 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
947 };
948
949 // Interface to java.lang.invoke.MethodHandle objects
950
951 class MethodHandleEntry;
952
953 class java_lang_invoke_MethodHandle: AllStatic {
954 friend class JavaClasses;
955
956 private:
957 static int _type_offset; // the MethodType of this MH
958 static int _form_offset; // the LambdaForm of this MH
959
960 static void compute_offsets();
961
962 public:
963 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
964
965 // Accessors
966 static oop type(oop mh);
967 static void set_type(oop mh, oop mtype);
968
969 static oop form(oop mh);
970 static void set_form(oop mh, oop lform);
971
972 // Testers
973 static bool is_subclass(Klass* klass) {
974 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
975 }
976 static bool is_instance(oop obj);
977
978 // Accessors for code generation:
979 static int type_offset_in_bytes() { return _type_offset; }
980 static int form_offset_in_bytes() { return _form_offset; }
981 };
982
983 // Interface to java.lang.invoke.DirectMethodHandle objects
984
985 class java_lang_invoke_DirectMethodHandle: AllStatic {
986 friend class JavaClasses;
987
988 private:
989 static int _member_offset; // the MemberName of this DMH
990
991 static void compute_offsets();
992
993 public:
994 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
995
996 // Accessors
997 static oop member(oop mh);
998
999 // Testers
1000 static bool is_subclass(Klass* klass) {
1001 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1002 }
1003 static bool is_instance(oop obj);
1004
1005 // Accessors for code generation:
1006 static int member_offset_in_bytes() { return _member_offset; }
1007 };
1008
1009 // Interface to java.lang.invoke.LambdaForm objects
1010 // (These are a private interface for managing adapter code generation.)
1011
1012 class java_lang_invoke_LambdaForm: AllStatic {
1013 friend class JavaClasses;
1014
1015 private:
1016 static int _vmentry_offset; // type is MemberName
1017
1018 static void compute_offsets();
1019
1020 public:
1021 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1022
1023 // Accessors
1024 static oop vmentry(oop lform);
1025 static void set_vmentry(oop lform, oop invoker);
1026
1027 // Testers
1028 static bool is_subclass(Klass* klass) {
1029 return SystemDictionary::LambdaForm_klass() != NULL &&
1030 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1031 }
1032 static bool is_instance(oop obj);
1033
1034 // Accessors for code generation:
1035 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1036 };
1037
1038
1039 // Interface to java.lang.invoke.MemberName objects
1040 // (These are a private interface for Java code to query the class hierarchy.)
1041
1042 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1043 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1044 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1045
1046 class java_lang_invoke_ResolvedMethodName : AllStatic {
1047 friend class JavaClasses;
1048
1049 static int _vmtarget_offset;
1050 static int _vmholder_offset;
1051
1052 static void compute_offsets();
1053 public:
1054 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1055
1056 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1057
1058 static Method* vmtarget(oop resolved_method);
1059 static void set_vmtarget(oop resolved_method, Method* method);
1060
1061 // find or create resolved member name
1062 static oop find_resolved_method(const methodHandle& m, TRAPS);
1063
1064 static bool is_instance(oop resolved_method);
1065 };
1066
1067
1068 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1069 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1070
1071
1072 class java_lang_invoke_MemberName: AllStatic {
1073 friend class JavaClasses;
1074
1075 private:
1076 // From java.lang.invoke.MemberName:
1077 // private Class<?> clazz; // class in which the method is defined
1078 // private String name; // may be null if not yet materialized
1079 // private Object type; // may be null if not yet materialized
1080 // private int flags; // modifier bits; see reflect.Modifier
1081 // private ResolvedMethodName method; // holds VM-specific target value
1082 // private intptr_t vmindex; // member index within class or interface
1083 static int _clazz_offset;
1084 static int _name_offset;
1085 static int _type_offset;
1086 static int _flags_offset;
1087 static int _method_offset;
1088 static int _vmindex_offset;
1089
1090 static void compute_offsets();
1091
1092 public:
1093 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1094 // Accessors
1095 static oop clazz(oop mname);
1096 static void set_clazz(oop mname, oop clazz);
1097
1098 static oop type(oop mname);
1099 static void set_type(oop mname, oop type);
1100
1101 static oop name(oop mname);
1102 static void set_name(oop mname, oop name);
1103
1104 static int flags(oop mname);
1105 static void set_flags(oop mname, int flags);
1106
1107 // Link through ResolvedMethodName field to get Method*
1108 static Method* vmtarget(oop mname);
1109 static void set_method(oop mname, oop method);
1110
1111 static intptr_t vmindex(oop mname);
1112 static void set_vmindex(oop mname, intptr_t index);
1113
1114 // Testers
1115 static bool is_subclass(Klass* klass) {
1116 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1117 }
1118 static bool is_instance(oop obj);
1119
1120 static bool is_method(oop obj);
1121
1122 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1123 enum {
1124 MN_IS_METHOD = 0x00010000, // method (not constructor)
1125 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1126 MN_IS_FIELD = 0x00040000, // field
1127 MN_IS_TYPE = 0x00080000, // nested type
1128 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1129 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1130 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1131 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1132 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1133 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1134 };
1135
1136 // Accessors for code generation:
1137 static int clazz_offset_in_bytes() { return _clazz_offset; }
1138 static int type_offset_in_bytes() { return _type_offset; }
1139 static int name_offset_in_bytes() { return _name_offset; }
1140 static int flags_offset_in_bytes() { return _flags_offset; }
1141 static int method_offset_in_bytes() { return _method_offset; }
1142 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1143 };
1144
1145
1146 // Interface to java.lang.invoke.MethodType objects
1147
1148 class java_lang_invoke_MethodType: AllStatic {
1149 friend class JavaClasses;
1150
1151 private:
1152 static int _rtype_offset;
1153 static int _ptypes_offset;
1154
1155 static void compute_offsets();
1156
1157 public:
1158 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1159 // Accessors
1160 static oop rtype(oop mt);
1161 static objArrayOop ptypes(oop mt);
1162
1163 static oop ptype(oop mt, int index);
1164 static int ptype_count(oop mt);
1165
1166 static int ptype_slot_count(oop mt); // extra counts for long/double
1167 static int rtype_slot_count(oop mt); // extra counts for long/double
1168
1169 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1170 static void print_signature(oop mt, outputStream* st);
1171
1172 static bool is_instance(oop obj);
1173
1174 static bool equals(oop mt1, oop mt2);
1175
1176 // Accessors for code generation:
1177 static int rtype_offset_in_bytes() { return _rtype_offset; }
1178 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1179 };
1180
1181
1182 // Interface to java.lang.invoke.CallSite objects
1183
1184 class java_lang_invoke_CallSite: AllStatic {
1185 friend class JavaClasses;
1186
1187 private:
1188 static int _target_offset;
1189 static int _context_offset;
1190
1191 static void compute_offsets();
1192
1193 public:
1194 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1195 // Accessors
1196 static oop target( oop site);
1197 static void set_target( oop site, oop target);
1198 static void set_target_volatile( oop site, oop target);
1199
1200 static oop context_no_keepalive(oop site);
1201
1202 // Testers
1203 static bool is_subclass(Klass* klass) {
1204 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1205 }
1206 static bool is_instance(oop obj);
1207
1208 // Accessors for code generation:
1209 static int target_offset_in_bytes() { return _target_offset; }
1210 };
1211
1212 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1213
1214 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1215 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1217
1218 class DependencyContext;
1219
1220 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1221 friend class JavaClasses;
1222
1223 private:
1224 static int _vmdependencies_offset;
1225 static int _last_cleanup_offset;
1226
1227 static void compute_offsets();
1228
1229 public:
1230 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1231 // Accessors
1232 static DependencyContext vmdependencies(oop context);
1233
1234 // Testers
1235 static bool is_subclass(Klass* klass) {
1236 return klass->is_subclass_of(SystemDictionary::Context_klass());
1237 }
1238 static bool is_instance(oop obj);
1239 };
1240
1241 // Interface to java.security.AccessControlContext objects
1242
1243 class java_security_AccessControlContext: AllStatic {
1244 private:
1245 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1246 // so we compute the offsets at startup rather than hard-wiring them.
1247 static int _context_offset;
1248 static int _privilegedContext_offset;
1249 static int _isPrivileged_offset;
1250 static int _isAuthorized_offset;
1251
1252 static void compute_offsets();
1253 public:
1254 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1255 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1256
1257 // Debugging/initialization
1258 friend class JavaClasses;
1259 };
1260
1261
1262 // Interface to java.lang.ClassLoader objects
1263
1264 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1265 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1266
1267 class java_lang_ClassLoader : AllStatic {
1268 private:
1269 static int _loader_data_offset;
1270 static bool offsets_computed;
1271 static int parent_offset;
1272 static int parallelCapable_offset;
1273 static int name_offset;
1274 static int nameAndId_offset;
1275 static int unnamedModule_offset;
1276
1277 public:
1278 static void compute_offsets();
1279 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1280
1281 static ClassLoaderData* loader_data_acquire(oop loader);
1282 static ClassLoaderData* loader_data_raw(oop loader);
1283 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1284
1285 static oop parent(oop loader);
1286 static oop name(oop loader);
1287 static oop nameAndId(oop loader);
1288 static bool isAncestor(oop loader, oop cl);
1289
1290 // Support for parallelCapable field
1291 static bool parallelCapable(oop the_class_mirror);
1292
1293 static bool is_trusted_loader(oop loader);
1294
1295 // Return true if this is one of the class loaders associated with
1296 // the generated bytecodes for reflection.
1297 static bool is_reflection_class_loader(oop loader);
1298
1299 // Fix for 4474172
1300 static oop non_reflection_class_loader(oop loader);
1301
1302 // Testers
1303 static bool is_subclass(Klass* klass) {
1304 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1305 }
1306 static bool is_instance(oop obj);
1307
1308 static oop unnamedModule(oop loader);
1309
1310 // Debugging
1311 friend class JavaClasses;
1312 friend class ClassFileParser; // access to number_of_fake_fields
1313 };
1314
1315
1316 // Interface to java.lang.System objects
1317
1318 class java_lang_System : AllStatic {
1319 private:
1320 static int static_in_offset;
1321 static int static_out_offset;
1322 static int static_err_offset;
1323 static int static_security_offset;
1324
1325 public:
1326 static int in_offset_in_bytes();
1327 static int out_offset_in_bytes();
1328 static int err_offset_in_bytes();
1329
1330 static void compute_offsets();
1331 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1332
1333 // Debugging
1334 friend class JavaClasses;
1335 };
1336
1337
1338 // Interface to java.lang.StackTraceElement objects
1339
1340 class java_lang_StackTraceElement: AllStatic {
1341 private:
1342 static int declaringClassObject_offset;
1343 static int classLoaderName_offset;
1344 static int moduleName_offset;
1345 static int moduleVersion_offset;
1346 static int declaringClass_offset;
1347 static int methodName_offset;
1348 static int fileName_offset;
1349 static int lineNumber_offset;
1350
1351 // Setters
1352 static void set_classLoaderName(oop element, oop value);
1353 static void set_moduleName(oop element, oop value);
1354 static void set_moduleVersion(oop element, oop value);
1355 static void set_declaringClass(oop element, oop value);
1356 static void set_methodName(oop element, oop value);
1357 static void set_fileName(oop element, oop value);
1358 static void set_lineNumber(oop element, int value);
1359 static void set_declaringClassObject(oop element, oop value);
1360
1361 public:
1362 // Create an instance of StackTraceElement
1363 static oop create(const methodHandle& method, int bci, TRAPS);
1364
1365 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1366 int version, int bci, Symbol* name, TRAPS);
1367
1368 static void compute_offsets();
1369 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1370
1371 // Debugging
1372 friend class JavaClasses;
1373 };
1374
1375
1376 class Backtrace: AllStatic {
1377 public:
1378 // Helper backtrace functions to store bci|version together.
1379 static int merge_bci_and_version(int bci, int version);
1380 static int merge_mid_and_cpref(int mid, int cpref);
1381 static int bci_at(unsigned int merged);
1382 static int version_at(unsigned int merged);
1383 static int mid_at(unsigned int merged);
1384 static int cpref_at(unsigned int merged);
1385 static int get_line_number(const methodHandle& method, int bci);
1386 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1387
1388 // Debugging
1389 friend class JavaClasses;
1390 };
1391
1392 // Interface to java.lang.StackFrameInfo objects
1393
1394 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1395 macro(java_lang_StackFrameInfo, version, short_signature, false)
1396
1397 class java_lang_StackFrameInfo: AllStatic {
1398 private:
1399 static int _memberName_offset;
1400 static int _bci_offset;
1401 static int _version_offset;
1402
1403 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1404
1405 public:
1406 // Setters
1407 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1408 static void set_bci(oop info, int value);
1409
1410 static void set_version(oop info, short value);
1411
1412 static void compute_offsets();
1413 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1414
1415 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1416
1417 // Debugging
1418 friend class JavaClasses;
1419 };
1420
1421 class java_lang_LiveStackFrameInfo: AllStatic {
1422 private:
1423 static int _monitors_offset;
1424 static int _locals_offset;
1425 static int _operands_offset;
1426 static int _mode_offset;
1427
1428 public:
1429 static void set_monitors(oop info, oop value);
1430 static void set_locals(oop info, oop value);
1431 static void set_operands(oop info, oop value);
1432 static void set_mode(oop info, int value);
1433
1434 static void compute_offsets();
1435 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1436
1437 // Debugging
1438 friend class JavaClasses;
1439 };
1440
1441 // Interface to java.lang.AssertionStatusDirectives objects
1442
1443 class java_lang_AssertionStatusDirectives: AllStatic {
1444 private:
1445 static int classes_offset;
1446 static int classEnabled_offset;
1447 static int packages_offset;
1448 static int packageEnabled_offset;
1449 static int deflt_offset;
1450
1451 public:
1452 // Setters
1453 static void set_classes(oop obj, oop val);
1454 static void set_classEnabled(oop obj, oop val);
1455 static void set_packages(oop obj, oop val);
1456 static void set_packageEnabled(oop obj, oop val);
1457 static void set_deflt(oop obj, bool val);
1458
1459 static void compute_offsets();
1460 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1461
1462 // Debugging
1463 friend class JavaClasses;
1464 };
1465
1466
1467 class java_nio_Buffer: AllStatic {
1468 private:
1469 static int _limit_offset;
1470
1471 public:
1472 static int limit_offset();
1473 static void compute_offsets();
1474 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1475 };
1476
1477 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1478 private:
1479 static int _owner_offset;
1480 public:
1481 static void compute_offsets();
1482 static oop get_owner_threadObj(oop obj);
1483 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1484 };
1485
1486 // Use to declare fields that need to be injected into Java classes
1487 // for the JVM to use. The name_index and signature_index are
1488 // declared in vmSymbols. The may_be_java flag is used to declare
1489 // fields that might already exist in Java but should be injected if
1490 // they don't. Otherwise the field is unconditionally injected and
1491 // the JVM uses the injected one. This is to ensure that name
1492 // collisions don't occur. In general may_be_java should be false
1493 // unless there's a good reason.
1494
1495 class InjectedField {
1496 public:
1497 const SystemDictionary::WKID klass_id;
1498 const vmSymbols::SID name_index;
1499 const vmSymbols::SID signature_index;
1500 const bool may_be_java;
1501
1502
1503 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1504 Symbol* name() const { return lookup_symbol(name_index); }
1505 Symbol* signature() const { return lookup_symbol(signature_index); }
1506
1507 int compute_offset();
1508
1509 // Find the Symbol for this index
1510 static Symbol* lookup_symbol(int symbol_index) {
1511 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1512 }
1513 };
1514
1515 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1516 klass##_##name##_enum,
1517
1518 #define ALL_INJECTED_FIELDS(macro) \
1519 CLASS_INJECTED_FIELDS(macro) \
1520 CLASSLOADER_INJECTED_FIELDS(macro) \
1521 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1522 MEMBERNAME_INJECTED_FIELDS(macro) \
1523 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1524 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1525 MODULE_INJECTED_FIELDS(macro)
1526
1527 // Interface to hard-coded offset checking
1528
1529 class JavaClasses : AllStatic {
1530 private:
1531
1532 static InjectedField _injected_fields[];
1533
1534 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1535 public:
1536 enum InjectedFieldID {
1537 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1538 MAX_enum
1539 };
1540
1541 static int compute_injected_offset(InjectedFieldID id);
1542
1543 static void compute_hard_coded_offsets();
1544 static void compute_offsets();
1545 static void check_offsets() PRODUCT_RETURN;
1546 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1547 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1548 };
1549
1550 #undef DECLARE_INJECTED_FIELD_ENUM
1551
1552 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP