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 #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 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(java_lang_ThreadGroup) \
61 f(java_lang_AssertionStatusDirectives) \
62 f(java_lang_ref_SoftReference) \
63 f(java_lang_invoke_MethodHandle) \
64 f(java_lang_invoke_DirectMethodHandle) \
65 f(java_lang_invoke_MemberName) \
66 f(java_lang_invoke_ResolvedMethodName) \
67 f(java_lang_invoke_LambdaForm) \
68 f(java_lang_invoke_MethodType) \
69 f(java_lang_invoke_CallSite) \
70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
71 f(java_security_AccessControlContext) \
72 f(java_lang_reflect_AccessibleObject) \
73 f(java_lang_reflect_Method) \
74 f(java_lang_reflect_Constructor) \
75 f(java_lang_reflect_Field) \
76 f(java_nio_Buffer) \
77 f(reflect_ConstantPool) \
78 f(reflect_UnsafeStaticFieldAccessorImpl) \
79 f(java_lang_reflect_Parameter) \
80 f(java_lang_Module) \
81 f(java_lang_StackTraceElement) \
82 f(java_lang_StackFrameInfo) \
83 f(java_lang_LiveStackFrameInfo) \
84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int coder_offset;
98
99 static bool initialized;
100
101 static Handle basic_create(int length, bool byte_arr, TRAPS);
102
103 static inline void set_coder(oop string, jbyte coder);
104
105 public:
106
107 // Coders
108 enum Coder {
109 CODER_LATIN1 = 0,
110 CODER_UTF16 = 1
111 };
112
113 static void compute_offsets();
114 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
115
116 // Instance creation
117 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
118 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
119 static Handle create_from_str(const char* utf8_str, TRAPS);
120 static oop create_oop_from_str(const char* utf8_str, TRAPS);
121 static Handle create_from_symbol(Symbol* symbol, TRAPS);
122 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
123 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
124
125 static void set_compact_strings(bool value);
126
127 static int value_offset_in_bytes() {
128 assert(initialized && (value_offset > 0), "Must be initialized");
129 return value_offset;
130 }
131 static int hash_offset_in_bytes() {
132 assert(initialized && (hash_offset > 0), "Must be initialized");
133 return hash_offset;
134 }
135 static int coder_offset_in_bytes() {
136 assert(initialized && (coder_offset > 0), "Must be initialized");
137 return coder_offset;
138 }
139
140 static inline void set_value_raw(oop string, typeArrayOop buffer);
141 static inline void set_value(oop string, typeArrayOop buffer);
142 static inline void set_hash(oop string, unsigned int hash);
143
144 // Accessors
145 static inline typeArrayOop value(oop java_string);
146 static inline typeArrayOop value_no_keepalive(oop java_string);
147 static inline unsigned int hash(oop java_string);
148 static inline bool is_latin1(oop java_string);
149 static inline int length(oop java_string);
150 static inline int length(oop java_string, typeArrayOop string_value);
151 static int utf8_length(oop java_string);
152 static int utf8_length(oop java_string, typeArrayOop string_value);
153
154 // String converters
155 static char* as_utf8_string(oop java_string);
156 static char* as_utf8_string(oop java_string, char* buf, int buflen);
157 static char* as_utf8_string(oop java_string, int start, int len);
158 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
159 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
160 static char* as_platform_dependent_str(Handle java_string, TRAPS);
161 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
162 // produce an ascii string with all other values quoted using \u####
163 static char* as_quoted_ascii(oop java_string);
164
165 // Compute the hash value for a java.lang.String object which would
166 // contain the characters passed in.
167 //
168 // As the hash value used by the String object itself, in
169 // String.hashCode(). This value is normally calculated in Java code
170 // in the String.hashCode method(), but is precomputed for String
171 // objects in the shared archive file.
172 // hash P(31) from Kernighan & Ritchie
173 //
174 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
175 static unsigned int hash_code(const jchar* s, int len) {
176 unsigned int h = 0;
177 while (len-- > 0) {
178 h = 31*h + (unsigned int) *s;
179 s++;
180 }
181 return h;
182 }
183
184 static unsigned int hash_code(const jbyte* s, int len) {
185 unsigned int h = 0;
186 while (len-- > 0) {
187 h = 31*h + (((unsigned int) *s) & 0xFF);
188 s++;
189 }
190 return h;
191 }
192
193 static unsigned int hash_code(oop java_string);
194
195 static bool equals(oop java_string, const jchar* chars, int len);
196 static bool equals(oop str1, oop str2);
197 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
198
199 // Conversion between '.' and '/' formats
200 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
201 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
202
203 // Conversion
204 static Symbol* as_symbol(oop java_string, TRAPS);
205 static Symbol* as_symbol_or_null(oop java_string);
206
207 // Testers
208 static bool is_instance(oop obj);
209 static inline bool is_instance_inlined(oop obj);
210
211 // Debugging
212 static void print(oop java_string, outputStream* st);
213 friend class JavaClasses;
214 friend class StringTable;
215 };
216
217
218 // Interface to java.lang.Class objects
219
220 #define CLASS_INJECTED_FIELDS(macro) \
221 macro(java_lang_Class, klass, intptr_signature, false) \
222 macro(java_lang_Class, array_klass, intptr_signature, false) \
223 macro(java_lang_Class, oop_size, int_signature, false) \
224 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
225 macro(java_lang_Class, protection_domain, object_signature, false) \
226 macro(java_lang_Class, signers, object_signature, false) \
227 macro(java_lang_Class, source_file, object_signature, false) \
228
229 class java_lang_Class : AllStatic {
230 friend class VMStructs;
231 friend class JVMCIVMStructs;
232
233 private:
234 // The fake offsets are added by the class loader when java.lang.Class is loaded
235
236 static int _klass_offset;
237 static int _array_klass_offset;
238
239 static int _oop_size_offset;
240 static int _static_oop_field_count_offset;
241
242 static int _protection_domain_offset;
243 static int _init_lock_offset;
244 static int _signers_offset;
245 static int _class_loader_offset;
246 static int _module_offset;
247 static int _component_mirror_offset;
248 static int _name_offset;
249 static int _source_file_offset;
250 static int _box_mirror_offset;
251 static int _value_mirror_offset;
252
253 static bool offsets_computed;
254 static int classRedefinedCount_offset;
255
256 static GrowableArray<Klass*>* _fixup_mirror_list;
257 static GrowableArray<Klass*>* _fixup_module_field_list;
258
259 static void set_init_lock(oop java_class, oop init_lock);
260 static void set_protection_domain(oop java_class, oop protection_domain);
261 static void set_class_loader(oop java_class, oop class_loader);
262 static void set_component_mirror(oop java_class, oop comp_mirror);
263 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
264 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
265 public:
266 static void allocate_fixup_lists();
267 static void compute_offsets();
268
269 // Instance creation
270 static void create_mirror(Klass* k, Handle class_loader, Handle module,
271 Handle protection_domain, TRAPS);
272 static void fixup_mirror(Klass* k, TRAPS);
273 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
274 static oop create_value_mirror(Klass* k, Handle mirror, TRAPS);
275
276 // Archiving
277 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
278 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
279 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
280 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
281 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
282 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
283 Handle protection_domain,
284 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
285
286 static void fixup_module_field(Klass* k, Handle module);
287
288 // Conversion
289 static Klass* as_Klass(oop java_class);
290 static Klass* as_Klass_raw(oop java_class);
291 static void set_klass(oop java_class, Klass* klass);
292 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
293 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
294 static void print_signature(oop java_class, outputStream *st);
295 static const char* as_external_name(oop java_class);
296 // Testing
297 static bool is_instance(oop obj);
298
299 static bool is_primitive(oop java_class);
300 static BasicType primitive_type(oop java_class);
301 static oop primitive_mirror(BasicType t);
302 // JVM_NewArray support
303 static Klass* array_klass_acquire(oop java_class);
304 static void release_set_array_klass(oop java_class, Klass* klass);
305 // compiler support for class operations
306 static int klass_offset_in_bytes() { return _klass_offset; }
307 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
308 // Support for classRedefinedCount field
309 static int classRedefinedCount(oop the_class_mirror);
310 static void set_classRedefinedCount(oop the_class_mirror, int value);
311
312 // Support for embedded per-class oops
313 static oop protection_domain(oop java_class);
314 static oop init_lock(oop java_class);
315 static oop component_mirror(oop java_class);
316 static objArrayOop signers(oop java_class);
317 static void set_signers(oop java_class, objArrayOop signers);
318
319 static oop class_loader(oop java_class);
320 static void set_module(oop java_class, oop module);
321 static oop module(oop java_class);
322
323 static void set_box_mirror(oop java_class, oop mirror);
324 static oop box_mirror(oop java_class);
325 static void set_value_mirror(oop java_class, oop mirror);
326 static oop value_mirror(oop java_class);
327
328 static oop name(Handle java_class, TRAPS);
329
330 static oop source_file(oop java_class);
331 static void set_source_file(oop java_class, oop source_file);
332
333 static int oop_size(oop java_class);
334 static int oop_size_raw(oop java_class);
335 static void set_oop_size(HeapWord* java_class, int size);
336 static int static_oop_field_count(oop java_class);
337 static int static_oop_field_count_raw(oop java_class);
338 static void set_static_oop_field_count(oop java_class, int size);
339
340 static GrowableArray<Klass*>* fixup_mirror_list() {
341 return _fixup_mirror_list;
342 }
343 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
344 _fixup_mirror_list = v;
345 }
346
347 static GrowableArray<Klass*>* fixup_module_field_list() {
348 return _fixup_module_field_list;
349 }
350 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
351 _fixup_module_field_list = v;
352 }
353
354 // Debugging
355 friend class JavaClasses;
356 friend class InstanceKlass; // verification code accesses offsets
357 friend class ClassFileParser; // access to number_of_fake_fields
358 };
359
360 // Interface to java.lang.Thread objects
361
362 class java_lang_Thread : AllStatic {
363 private:
364 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
365 // so we compute the offsets at startup rather than hard-wiring them.
366 static int _name_offset;
367 static int _group_offset;
368 static int _contextClassLoader_offset;
369 static int _inheritedAccessControlContext_offset;
370 static int _priority_offset;
371 static int _eetop_offset;
372 static int _daemon_offset;
373 static int _stillborn_offset;
374 static int _stackSize_offset;
375 static int _tid_offset;
376 static int _thread_status_offset;
377 static int _park_blocker_offset;
378 static int _park_event_offset ;
379
380 static void compute_offsets();
381
382 public:
383 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
384
385 // Instance creation
386 static oop create();
387 // Returns the JavaThread associated with the thread obj
388 static JavaThread* thread(oop java_thread);
389 // Set JavaThread for instance
390 static void set_thread(oop java_thread, JavaThread* thread);
391 // Name
392 static oop name(oop java_thread);
393 static void set_name(oop java_thread, oop name);
394 // Priority
395 static ThreadPriority priority(oop java_thread);
396 static void set_priority(oop java_thread, ThreadPriority priority);
397 // Thread group
398 static oop threadGroup(oop java_thread);
399 // Stillborn
400 static bool is_stillborn(oop java_thread);
401 static void set_stillborn(oop java_thread);
402 // Alive (NOTE: this is not really a field, but provides the correct
403 // definition without doing a Java call)
404 static bool is_alive(oop java_thread);
405 // Daemon
406 static bool is_daemon(oop java_thread);
407 static void set_daemon(oop java_thread);
408 // Context ClassLoader
409 static oop context_class_loader(oop java_thread);
410 // Control context
411 static oop inherited_access_control_context(oop java_thread);
412 // Stack size hint
413 static jlong stackSize(oop java_thread);
414 // Thread ID
415 static jlong thread_id(oop java_thread);
416
417 // Blocker object responsible for thread parking
418 static oop park_blocker(oop java_thread);
419
420 // Pointer to type-stable park handler, encoded as jlong.
421 // Should be set when apparently null
422 // For details, see unsafe.cpp Unsafe_Unpark
423 static jlong park_event(oop java_thread);
424 static bool set_park_event(oop java_thread, jlong ptr);
425
426 // Java Thread Status for JVMTI and M&M use.
427 // This thread status info is saved in threadStatus field of
428 // java.lang.Thread java class.
429 enum ThreadStatus {
430 NEW = 0,
431 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
432 JVMTI_THREAD_STATE_RUNNABLE,
433 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
434 JVMTI_THREAD_STATE_WAITING +
435 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
436 JVMTI_THREAD_STATE_SLEEPING,
437 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
438 JVMTI_THREAD_STATE_WAITING +
439 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
440 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
441 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
442 JVMTI_THREAD_STATE_WAITING +
443 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
444 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
445 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
446 JVMTI_THREAD_STATE_WAITING +
447 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
448 JVMTI_THREAD_STATE_PARKED,
449 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
450 JVMTI_THREAD_STATE_WAITING +
451 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
452 JVMTI_THREAD_STATE_PARKED,
453 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
454 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
455 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
456 };
457 // Write thread status info to threadStatus field of java.lang.Thread.
458 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
459 // Read thread status info from threadStatus field of java.lang.Thread.
460 static ThreadStatus get_thread_status(oop java_thread_oop);
461
462 static const char* thread_status_name(oop java_thread_oop);
463
464 // Debugging
465 friend class JavaClasses;
466 };
467
468 // Interface to java.lang.ThreadGroup objects
469
470 class java_lang_ThreadGroup : AllStatic {
471 private:
472 static int _parent_offset;
473 static int _name_offset;
474 static int _threads_offset;
475 static int _groups_offset;
476 static int _maxPriority_offset;
477 static int _destroyed_offset;
478 static int _daemon_offset;
479 static int _nthreads_offset;
480 static int _ngroups_offset;
481
482 static void compute_offsets();
483
484 public:
485 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
486
487 // parent ThreadGroup
488 static oop parent(oop java_thread_group);
489 // name
490 static const char* name(oop java_thread_group);
491 // ("name as oop" accessor is not necessary)
492 // Number of threads in group
493 static int nthreads(oop java_thread_group);
494 // threads
495 static objArrayOop threads(oop java_thread_group);
496 // Number of threads in group
497 static int ngroups(oop java_thread_group);
498 // groups
499 static objArrayOop groups(oop java_thread_group);
500 // maxPriority in group
501 static ThreadPriority maxPriority(oop java_thread_group);
502 // Destroyed
503 static bool is_destroyed(oop java_thread_group);
504 // Daemon
505 static bool is_daemon(oop java_thread_group);
506 // Debugging
507 friend class JavaClasses;
508 };
509
510
511
512 // Interface to java.lang.Throwable objects
513
514 class java_lang_Throwable: AllStatic {
515 friend class BacktraceBuilder;
516 friend class BacktraceIterator;
517
518 private:
519 // Offsets
520 enum {
521 hc_backtrace_offset = 0,
522 hc_detailMessage_offset = 1,
523 hc_cause_offset = 2, // New since 1.4
524 hc_stackTrace_offset = 3 // New since 1.4
525 };
526 // Trace constants
527 enum {
528 trace_methods_offset = 0,
529 trace_bcis_offset = 1,
530 trace_mirrors_offset = 2,
531 trace_names_offset = 3,
532 trace_next_offset = 4,
533 trace_size = 5,
534 trace_chunk_size = 32
535 };
536
537 static int backtrace_offset;
538 static int detailMessage_offset;
539 static int stackTrace_offset;
540 static int depth_offset;
541 static int static_unassigned_stacktrace_offset;
542
543 // StackTrace (programmatic access, new since 1.4)
544 static void clear_stacktrace(oop throwable);
545 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
546 static void set_stacktrace(oop throwable, oop st_element_array);
547 static oop unassigned_stacktrace();
548
549 public:
550 // Backtrace
551 static oop backtrace(oop throwable);
552 static void set_backtrace(oop throwable, oop value);
553 static int depth(oop throwable);
554 static void set_depth(oop throwable, int value);
555 // Needed by JVMTI to filter out this internal field.
556 static int get_backtrace_offset() { return backtrace_offset;}
557 static int get_detailMessage_offset() { return detailMessage_offset;}
558 // Message
559 static oop message(oop throwable);
560 static void set_message(oop throwable, oop value);
561 static Symbol* detail_message(oop throwable);
562 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
563 static void print_stack_usage(Handle stream);
564
565 static void compute_offsets();
566 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
567
568 // Allocate space for backtrace (created but stack trace not filled in)
569 static void allocate_backtrace(Handle throwable, TRAPS);
570 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
571 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
572 // Fill in current stack trace, can cause GC
573 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
574 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
575 // Programmatic access to stack trace
576 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
577 // Printing
578 static void print(oop throwable, outputStream* st);
579 static void print_stack_trace(Handle throwable, outputStream* st);
580 static void java_printStackTrace(Handle throwable, TRAPS);
581 // Debugging
582 friend class JavaClasses;
583 };
584
585
586 // Interface to java.lang.reflect.AccessibleObject objects
587
588 class java_lang_reflect_AccessibleObject: AllStatic {
589 private:
590 // Note that to reduce dependencies on the JDK we compute these
591 // offsets at run-time.
592 static int override_offset;
593
594 static void compute_offsets();
595
596 public:
597 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
598
599 // Accessors
600 static jboolean override(oop reflect);
601 static void set_override(oop reflect, jboolean value);
602
603 // Debugging
604 friend class JavaClasses;
605 };
606
607
608 // Interface to java.lang.reflect.Method objects
609
610 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
611 private:
612 // Note that to reduce dependencies on the JDK we compute these
613 // offsets at run-time.
614 static int clazz_offset;
615 static int name_offset;
616 static int returnType_offset;
617 static int parameterTypes_offset;
618 static int exceptionTypes_offset;
619 static int slot_offset;
620 static int modifiers_offset;
621 static int signature_offset;
622 static int annotations_offset;
623 static int parameter_annotations_offset;
624 static int annotation_default_offset;
625
626 static void compute_offsets();
627 public:
628 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
629
630 // Allocation
631 static Handle create(TRAPS);
632
633 // Accessors
634 static oop clazz(oop reflect);
635 static void set_clazz(oop reflect, oop value);
636
637 static void set_name(oop method, oop value);
638
639 static oop return_type(oop method);
640 static void set_return_type(oop method, oop value);
641
642 static oop parameter_types(oop method);
643 static void set_parameter_types(oop method, oop value);
644
645 static int slot(oop reflect);
646 static void set_slot(oop reflect, int value);
647
648 static void set_exception_types(oop method, oop value);
649 static void set_modifiers(oop method, int value);
650 static void set_signature(oop method, oop value);
651 static void set_annotations(oop method, oop value);
652 static void set_parameter_annotations(oop method, oop value);
653 static void set_annotation_default(oop method, oop value);
654
655 // Debugging
656 friend class JavaClasses;
657 };
658
659
660 // Interface to java.lang.reflect.Constructor objects
661
662 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
663 private:
664 // Note that to reduce dependencies on the JDK we compute these
665 // offsets at run-time.
666 static int clazz_offset;
667 static int parameterTypes_offset;
668 static int exceptionTypes_offset;
669 static int slot_offset;
670 static int modifiers_offset;
671 static int signature_offset;
672 static int annotations_offset;
673 static int parameter_annotations_offset;
674
675 static void compute_offsets();
676 public:
677 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
678
679 // Allocation
680 static Handle create(TRAPS);
681
682 // Accessors
683 static oop clazz(oop reflect);
684 static void set_clazz(oop reflect, oop value);
685
686 static oop parameter_types(oop constructor);
687 static void set_parameter_types(oop constructor, oop value);
688
689 static int slot(oop reflect);
690 static void set_slot(oop reflect, int value);
691
692 static void set_exception_types(oop constructor, oop value);
693 static void set_modifiers(oop constructor, int value);
694 static void set_signature(oop constructor, oop value);
695 static void set_annotations(oop constructor, oop value);
696 static void set_parameter_annotations(oop method, oop value);
697
698 // Debugging
699 friend class JavaClasses;
700 };
701
702
703 // Interface to java.lang.reflect.Field objects
704
705 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
706 private:
707 // Note that to reduce dependencies on the JDK we compute these
708 // offsets at run-time.
709 static int clazz_offset;
710 static int name_offset;
711 static int type_offset;
712 static int slot_offset;
713 static int modifiers_offset;
714 static int signature_offset;
715 static int annotations_offset;
716
717 static void compute_offsets();
718
719 public:
720 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
721
722 // Allocation
723 static Handle create(TRAPS);
724
725 // Accessors
726 static oop clazz(oop reflect);
727 static void set_clazz(oop reflect, oop value);
728
729 static oop name(oop field);
730 static void set_name(oop field, oop value);
731
732 static oop type(oop field);
733 static void set_type(oop field, oop value);
734
735 static int slot(oop reflect);
736 static void set_slot(oop reflect, int value);
737
738 static int modifiers(oop field);
739 static void set_modifiers(oop field, int value);
740
741 static void set_signature(oop constructor, oop value);
742 static void set_annotations(oop constructor, oop value);
743 static void set_parameter_annotations(oop method, oop value);
744 static void set_annotation_default(oop method, oop value);
745
746 // Debugging
747 friend class JavaClasses;
748 };
749
750 class java_lang_reflect_Parameter {
751 private:
752 // Note that to reduce dependencies on the JDK we compute these
753 // offsets at run-time.
754 static int name_offset;
755 static int modifiers_offset;
756 static int index_offset;
757 static int executable_offset;
758
759 static void compute_offsets();
760
761 public:
762 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
763
764 // Allocation
765 static Handle create(TRAPS);
766
767 // Accessors
768 static oop name(oop field);
769 static void set_name(oop field, oop value);
770
771 static int index(oop reflect);
772 static void set_index(oop reflect, int value);
773
774 static int modifiers(oop reflect);
775 static void set_modifiers(oop reflect, int value);
776
777 static oop executable(oop constructor);
778 static void set_executable(oop constructor, oop value);
779
780 friend class JavaClasses;
781 };
782
783 #define MODULE_INJECTED_FIELDS(macro) \
784 macro(java_lang_Module, module_entry, intptr_signature, false)
785
786 class java_lang_Module {
787 private:
788 static int loader_offset;
789 static int name_offset;
790 static int _module_entry_offset;
791 static void compute_offsets();
792
793 public:
794 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
795
796 // Allocation
797 static Handle create(Handle loader, Handle module_name, TRAPS);
798
799 // Testers
800 static bool is_instance(oop obj);
801
802 // Accessors
803 static oop loader(oop module);
804 static void set_loader(oop module, oop value);
805
806 static oop name(oop module);
807 static void set_name(oop module, oop value);
808
809 static ModuleEntry* module_entry(oop module);
810 static void set_module_entry(oop module, ModuleEntry* module_entry);
811
812 friend class JavaClasses;
813 };
814
815 // Interface to jdk.internal.reflect.ConstantPool objects
816 class reflect_ConstantPool {
817 private:
818 // Note that to reduce dependencies on the JDK we compute these
819 // offsets at run-time.
820 static int _oop_offset;
821
822 static void compute_offsets();
823
824 public:
825 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
826
827 // Allocation
828 static Handle create(TRAPS);
829
830 // Accessors
831 static void set_cp(oop reflect, ConstantPool* value);
832 static int oop_offset() {
833 return _oop_offset;
834 }
835
836 static ConstantPool* get_cp(oop reflect);
837
838 // Debugging
839 friend class JavaClasses;
840 };
841
842 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
843 class reflect_UnsafeStaticFieldAccessorImpl {
844 private:
845 static int _base_offset;
846 static void compute_offsets();
847
848 public:
849 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
850
851 static int base_offset() {
852 return _base_offset;
853 }
854
855 // Debugging
856 friend class JavaClasses;
857 };
858
859 // Interface to java.lang primitive type boxing objects:
860 // - java.lang.Boolean
861 // - java.lang.Character
862 // - java.lang.Float
863 // - java.lang.Double
864 // - java.lang.Byte
865 // - java.lang.Short
866 // - java.lang.Integer
867 // - java.lang.Long
868
869 // This could be separated out into 8 individual classes.
870
871 class java_lang_boxing_object: AllStatic {
872 private:
873 enum {
874 hc_value_offset = 0
875 };
876 static int value_offset;
877 static int long_value_offset;
878
879 static oop initialize_and_allocate(BasicType type, TRAPS);
880 public:
881 // Allocation. Returns a boxed value, or NULL for invalid type.
882 static oop create(BasicType type, jvalue* value, TRAPS);
883 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
884 static BasicType get_value(oop box, jvalue* value);
885 static BasicType set_value(oop box, jvalue* value);
886 static BasicType basic_type(oop box);
887 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
888 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
889 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
890 static void print(BasicType type, jvalue* value, outputStream* st);
891
892 static int value_offset_in_bytes(BasicType type) {
893 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
894 value_offset;
895 }
896
897 // Debugging
898 friend class JavaClasses;
899 };
900
901
902
903 // Interface to java.lang.ref.Reference objects
904
905 class java_lang_ref_Reference: AllStatic {
906 public:
907 enum {
908 hc_referent_offset = 0,
909 hc_queue_offset = 1,
910 hc_next_offset = 2,
911 hc_discovered_offset = 3 // Is not last, see SoftRefs.
912 };
913
914 static int referent_offset;
915 static int queue_offset;
916 static int next_offset;
917 static int discovered_offset;
918
919 // Accessors
920 static inline oop referent(oop ref);
921 static inline void set_referent(oop ref, oop value);
922 static inline void set_referent_raw(oop ref, oop value);
923 static inline HeapWord* referent_addr_raw(oop ref);
924 static inline oop next(oop ref);
925 static inline void set_next(oop ref, oop value);
926 static inline void set_next_raw(oop ref, oop value);
927 static inline HeapWord* next_addr_raw(oop ref);
928 static inline oop discovered(oop ref);
929 static inline void set_discovered(oop ref, oop value);
930 static inline void set_discovered_raw(oop ref, oop value);
931 static inline HeapWord* discovered_addr_raw(oop ref);
932 static inline oop queue(oop ref);
933 static inline void set_queue(oop ref, oop value);
934 static bool is_referent_field(oop obj, ptrdiff_t offset);
935 static inline bool is_final(oop ref);
936 static inline bool is_phantom(oop ref);
937 };
938
939
940 // Interface to java.lang.ref.SoftReference objects
941
942 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
943 public:
944 static int timestamp_offset;
945 static int static_clock_offset;
946
947 // Accessors
948 static jlong timestamp(oop ref);
949
950 // Accessors for statics
951 static jlong clock();
952 static void set_clock(jlong value);
953
954 static void compute_offsets();
955 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
956 };
957
958 // Interface to java.lang.invoke.MethodHandle objects
959
960 class MethodHandleEntry;
961
962 class java_lang_invoke_MethodHandle: AllStatic {
963 friend class JavaClasses;
964
965 private:
966 static int _type_offset; // the MethodType of this MH
967 static int _form_offset; // the LambdaForm of this MH
968
969 static void compute_offsets();
970
971 public:
972 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
973
974 // Accessors
975 static oop type(oop mh);
976 static void set_type(oop mh, oop mtype);
977
978 static oop form(oop mh);
979 static void set_form(oop mh, oop lform);
980
981 // Testers
982 static bool is_subclass(Klass* klass) {
983 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
984 }
985 static bool is_instance(oop obj);
986
987 // Accessors for code generation:
988 static int type_offset_in_bytes() { return _type_offset; }
989 static int form_offset_in_bytes() { return _form_offset; }
990 };
991
992 // Interface to java.lang.invoke.DirectMethodHandle objects
993
994 class java_lang_invoke_DirectMethodHandle: AllStatic {
995 friend class JavaClasses;
996
997 private:
998 static int _member_offset; // the MemberName of this DMH
999
1000 static void compute_offsets();
1001
1002 public:
1003 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1004
1005 // Accessors
1006 static oop member(oop mh);
1007
1008 // Testers
1009 static bool is_subclass(Klass* klass) {
1010 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1011 }
1012 static bool is_instance(oop obj);
1013
1014 // Accessors for code generation:
1015 static int member_offset_in_bytes() { return _member_offset; }
1016 };
1017
1018 // Interface to java.lang.invoke.LambdaForm objects
1019 // (These are a private interface for managing adapter code generation.)
1020
1021 class java_lang_invoke_LambdaForm: AllStatic {
1022 friend class JavaClasses;
1023
1024 private:
1025 static int _vmentry_offset; // type is MemberName
1026
1027 static void compute_offsets();
1028
1029 public:
1030 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1031
1032 // Accessors
1033 static oop vmentry(oop lform);
1034 static void set_vmentry(oop lform, oop invoker);
1035
1036 // Testers
1037 static bool is_subclass(Klass* klass) {
1038 return SystemDictionary::LambdaForm_klass() != NULL &&
1039 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1040 }
1041 static bool is_instance(oop obj);
1042
1043 // Accessors for code generation:
1044 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1045 };
1046
1047
1048 // Interface to java.lang.invoke.MemberName objects
1049 // (These are a private interface for Java code to query the class hierarchy.)
1050
1051 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1052 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1053 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1054
1055 class java_lang_invoke_ResolvedMethodName : AllStatic {
1056 friend class JavaClasses;
1057
1058 static int _vmtarget_offset;
1059 static int _vmholder_offset;
1060
1061 static void compute_offsets();
1062 public:
1063 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1064
1065 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1066
1067 static Method* vmtarget(oop resolved_method);
1068 static void set_vmtarget(oop resolved_method, Method* method);
1069
1070 // find or create resolved member name
1071 static oop find_resolved_method(const methodHandle& m, TRAPS);
1072
1073 static bool is_instance(oop resolved_method);
1074 };
1075
1076
1077 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1078 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1079
1080
1081 class java_lang_invoke_MemberName: AllStatic {
1082 friend class JavaClasses;
1083
1084 private:
1085 // From java.lang.invoke.MemberName:
1086 // private Class<?> clazz; // class in which the method is defined
1087 // private String name; // may be null if not yet materialized
1088 // private Object type; // may be null if not yet materialized
1089 // private int flags; // modifier bits; see reflect.Modifier
1090 // private ResolvedMethodName method; // holds VM-specific target value
1091 // private intptr_t vmindex; // member index within class or interface
1092 static int _clazz_offset;
1093 static int _name_offset;
1094 static int _type_offset;
1095 static int _flags_offset;
1096 static int _method_offset;
1097 static int _vmindex_offset;
1098
1099 static void compute_offsets();
1100
1101 public:
1102 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1103 // Accessors
1104 static oop clazz(oop mname);
1105 static void set_clazz(oop mname, oop clazz);
1106
1107 static oop type(oop mname);
1108 static void set_type(oop mname, oop type);
1109
1110 static oop name(oop mname);
1111 static void set_name(oop mname, oop name);
1112
1113 static int flags(oop mname);
1114 static void set_flags(oop mname, int flags);
1115
1116 // Link through ResolvedMethodName field to get Method*
1117 static Method* vmtarget(oop mname);
1118 static void set_method(oop mname, oop method);
1119
1120 static intptr_t vmindex(oop mname);
1121 static void set_vmindex(oop mname, intptr_t index);
1122
1123 // Testers
1124 static bool is_subclass(Klass* klass) {
1125 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1126 }
1127 static bool is_instance(oop obj);
1128
1129 static bool is_method(oop obj);
1130
1131 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1132 enum {
1133 MN_IS_METHOD = 0x00010000, // method (not constructor)
1134 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1135 MN_IS_FIELD = 0x00040000, // field
1136 MN_IS_TYPE = 0x00080000, // nested type
1137 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1138 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1139 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1140 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1141 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1142 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1143 };
1144
1145 // Accessors for code generation:
1146 static int clazz_offset_in_bytes() { return _clazz_offset; }
1147 static int type_offset_in_bytes() { return _type_offset; }
1148 static int name_offset_in_bytes() { return _name_offset; }
1149 static int flags_offset_in_bytes() { return _flags_offset; }
1150 static int method_offset_in_bytes() { return _method_offset; }
1151 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1152 };
1153
1154
1155 // Interface to java.lang.invoke.MethodType objects
1156
1157 class java_lang_invoke_MethodType: AllStatic {
1158 friend class JavaClasses;
1159
1160 private:
1161 static int _rtype_offset;
1162 static int _ptypes_offset;
1163
1164 static void compute_offsets();
1165
1166 public:
1167 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1168 // Accessors
1169 static oop rtype(oop mt);
1170 static objArrayOop ptypes(oop mt);
1171
1172 static oop ptype(oop mt, int index);
1173 static int ptype_count(oop mt);
1174
1175 static int ptype_slot_count(oop mt); // extra counts for long/double
1176 static int rtype_slot_count(oop mt); // extra counts for long/double
1177
1178 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1179 static void print_signature(oop mt, outputStream* st);
1180
1181 static bool is_instance(oop obj);
1182
1183 static bool equals(oop mt1, oop mt2);
1184
1185 // Accessors for code generation:
1186 static int rtype_offset_in_bytes() { return _rtype_offset; }
1187 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1188 };
1189
1190
1191 // Interface to java.lang.invoke.CallSite objects
1192
1193 class java_lang_invoke_CallSite: AllStatic {
1194 friend class JavaClasses;
1195
1196 private:
1197 static int _target_offset;
1198 static int _context_offset;
1199
1200 static void compute_offsets();
1201
1202 public:
1203 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1204 // Accessors
1205 static oop target( oop site);
1206 static void set_target( oop site, oop target);
1207 static void set_target_volatile( oop site, oop target);
1208
1209 static oop context_no_keepalive(oop site);
1210
1211 // Testers
1212 static bool is_subclass(Klass* klass) {
1213 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1214 }
1215 static bool is_instance(oop obj);
1216
1217 // Accessors for code generation:
1218 static int target_offset_in_bytes() { return _target_offset; }
1219 };
1220
1221 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1222
1223 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1224 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1225 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1226
1227 class DependencyContext;
1228
1229 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1230 friend class JavaClasses;
1231
1232 private:
1233 static int _vmdependencies_offset;
1234 static int _last_cleanup_offset;
1235
1236 static void compute_offsets();
1237
1238 public:
1239 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1240 // Accessors
1241 static DependencyContext vmdependencies(oop context);
1242
1243 // Testers
1244 static bool is_subclass(Klass* klass) {
1245 return klass->is_subclass_of(SystemDictionary::Context_klass());
1246 }
1247 static bool is_instance(oop obj);
1248 };
1249
1250 // Interface to java.security.AccessControlContext objects
1251
1252 class java_security_AccessControlContext: AllStatic {
1253 private:
1254 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1255 // so we compute the offsets at startup rather than hard-wiring them.
1256 static int _context_offset;
1257 static int _privilegedContext_offset;
1258 static int _isPrivileged_offset;
1259 static int _isAuthorized_offset;
1260
1261 static void compute_offsets();
1262 public:
1263 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1264 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1265
1266 // Debugging/initialization
1267 friend class JavaClasses;
1268 };
1269
1270
1271 // Interface to java.lang.ClassLoader objects
1272
1273 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1274 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1275
1276 class java_lang_ClassLoader : AllStatic {
1277 private:
1278 static int _loader_data_offset;
1279 static bool offsets_computed;
1280 static int parent_offset;
1281 static int parallelCapable_offset;
1282 static int name_offset;
1283 static int nameAndId_offset;
1284 static int unnamedModule_offset;
1285
1286 public:
1287 static void compute_offsets();
1288 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1289
1290 static ClassLoaderData* loader_data_acquire(oop loader);
1291 static ClassLoaderData* loader_data_raw(oop loader);
1292 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1293
1294 static oop parent(oop loader);
1295 static oop name(oop loader);
1296 static oop nameAndId(oop loader);
1297 static bool isAncestor(oop loader, oop cl);
1298
1299 // Support for parallelCapable field
1300 static bool parallelCapable(oop the_class_mirror);
1301
1302 static bool is_trusted_loader(oop loader);
1303
1304 // Return true if this is one of the class loaders associated with
1305 // the generated bytecodes for reflection.
1306 static bool is_reflection_class_loader(oop loader);
1307
1308 // Fix for 4474172
1309 static oop non_reflection_class_loader(oop loader);
1310
1311 // Testers
1312 static bool is_subclass(Klass* klass) {
1313 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1314 }
1315 static bool is_instance(oop obj);
1316
1317 static oop unnamedModule(oop loader);
1318
1319 // Debugging
1320 friend class JavaClasses;
1321 friend class ClassFileParser; // access to number_of_fake_fields
1322 };
1323
1324
1325 // Interface to java.lang.System objects
1326
1327 class java_lang_System : AllStatic {
1328 private:
1329 static int static_in_offset;
1330 static int static_out_offset;
1331 static int static_err_offset;
1332 static int static_security_offset;
1333
1334 public:
1335 static int in_offset_in_bytes();
1336 static int out_offset_in_bytes();
1337 static int err_offset_in_bytes();
1338
1339 static void compute_offsets();
1340 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1341
1342 // Debugging
1343 friend class JavaClasses;
1344 };
1345
1346
1347 // Interface to java.lang.StackTraceElement objects
1348
1349 class java_lang_StackTraceElement: AllStatic {
1350 private:
1351 static int declaringClassObject_offset;
1352 static int classLoaderName_offset;
1353 static int moduleName_offset;
1354 static int moduleVersion_offset;
1355 static int declaringClass_offset;
1356 static int methodName_offset;
1357 static int fileName_offset;
1358 static int lineNumber_offset;
1359
1360 // Setters
1361 static void set_classLoaderName(oop element, oop value);
1362 static void set_moduleName(oop element, oop value);
1363 static void set_moduleVersion(oop element, oop value);
1364 static void set_declaringClass(oop element, oop value);
1365 static void set_methodName(oop element, oop value);
1366 static void set_fileName(oop element, oop value);
1367 static void set_lineNumber(oop element, int value);
1368 static void set_declaringClassObject(oop element, oop value);
1369
1370 public:
1371 // Create an instance of StackTraceElement
1372 static oop create(const methodHandle& method, int bci, TRAPS);
1373
1374 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1375 int version, int bci, Symbol* name, TRAPS);
1376
1377 static void compute_offsets();
1378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1379
1380 // Debugging
1381 friend class JavaClasses;
1382 };
1383
1384
1385 class Backtrace: AllStatic {
1386 public:
1387 // Helper backtrace functions to store bci|version together.
1388 static int merge_bci_and_version(int bci, int version);
1389 static int merge_mid_and_cpref(int mid, int cpref);
1390 static int bci_at(unsigned int merged);
1391 static int version_at(unsigned int merged);
1392 static int mid_at(unsigned int merged);
1393 static int cpref_at(unsigned int merged);
1394 static int get_line_number(const methodHandle& method, int bci);
1395 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1396
1397 // Debugging
1398 friend class JavaClasses;
1399 };
1400
1401 // Interface to java.lang.StackFrameInfo objects
1402
1403 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1404 macro(java_lang_StackFrameInfo, version, short_signature, false)
1405
1406 class java_lang_StackFrameInfo: AllStatic {
1407 private:
1408 static int _memberName_offset;
1409 static int _bci_offset;
1410 static int _version_offset;
1411
1412 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1413
1414 public:
1415 // Setters
1416 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1417 static void set_bci(oop info, int value);
1418
1419 static void set_version(oop info, short value);
1420
1421 static void compute_offsets();
1422 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1423
1424 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1425
1426 // Debugging
1427 friend class JavaClasses;
1428 };
1429
1430 class java_lang_LiveStackFrameInfo: AllStatic {
1431 private:
1432 static int _monitors_offset;
1433 static int _locals_offset;
1434 static int _operands_offset;
1435 static int _mode_offset;
1436
1437 public:
1438 static void set_monitors(oop info, oop value);
1439 static void set_locals(oop info, oop value);
1440 static void set_operands(oop info, oop value);
1441 static void set_mode(oop info, int value);
1442
1443 static void compute_offsets();
1444 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1445
1446 // Debugging
1447 friend class JavaClasses;
1448 };
1449
1450 // Interface to java.lang.AssertionStatusDirectives objects
1451
1452 class java_lang_AssertionStatusDirectives: AllStatic {
1453 private:
1454 static int classes_offset;
1455 static int classEnabled_offset;
1456 static int packages_offset;
1457 static int packageEnabled_offset;
1458 static int deflt_offset;
1459
1460 public:
1461 // Setters
1462 static void set_classes(oop obj, oop val);
1463 static void set_classEnabled(oop obj, oop val);
1464 static void set_packages(oop obj, oop val);
1465 static void set_packageEnabled(oop obj, oop val);
1466 static void set_deflt(oop obj, bool val);
1467
1468 static void compute_offsets();
1469 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1470
1471 // Debugging
1472 friend class JavaClasses;
1473 };
1474
1475
1476 class java_nio_Buffer: AllStatic {
1477 private:
1478 static int _limit_offset;
1479
1480 public:
1481 static int limit_offset();
1482 static void compute_offsets();
1483 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1484 };
1485
1486 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1487 private:
1488 static int _owner_offset;
1489 public:
1490 static void compute_offsets();
1491 static oop get_owner_threadObj(oop obj);
1492 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1493 };
1494
1495 // Use to declare fields that need to be injected into Java classes
1496 // for the JVM to use. The name_index and signature_index are
1497 // declared in vmSymbols. The may_be_java flag is used to declare
1498 // fields that might already exist in Java but should be injected if
1499 // they don't. Otherwise the field is unconditionally injected and
1500 // the JVM uses the injected one. This is to ensure that name
1501 // collisions don't occur. In general may_be_java should be false
1502 // unless there's a good reason.
1503
1504 class InjectedField {
1505 public:
1506 const SystemDictionary::WKID klass_id;
1507 const vmSymbols::SID name_index;
1508 const vmSymbols::SID signature_index;
1509 const bool may_be_java;
1510
1511
1512 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1513 Symbol* name() const { return lookup_symbol(name_index); }
1514 Symbol* signature() const { return lookup_symbol(signature_index); }
1515
1516 int compute_offset();
1517
1518 // Find the Symbol for this index
1519 static Symbol* lookup_symbol(int symbol_index) {
1520 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1521 }
1522 };
1523
1524 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1525 klass##_##name##_enum,
1526
1527 #define ALL_INJECTED_FIELDS(macro) \
1528 CLASS_INJECTED_FIELDS(macro) \
1529 CLASSLOADER_INJECTED_FIELDS(macro) \
1530 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1531 MEMBERNAME_INJECTED_FIELDS(macro) \
1532 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1533 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1534 MODULE_INJECTED_FIELDS(macro)
1535
1536 // Interface to hard-coded offset checking
1537
1538 class JavaClasses : AllStatic {
1539 private:
1540
1541 static InjectedField _injected_fields[];
1542
1543 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1544 public:
1545 enum InjectedFieldID {
1546 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1547 MAX_enum
1548 };
1549
1550 static int compute_injected_offset(InjectedFieldID id);
1551
1552 static void compute_hard_coded_offsets();
1553 static void compute_offsets();
1554 static void check_offsets() PRODUCT_RETURN;
1555 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1556 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1557 };
1558
1559 #undef DECLARE_INJECTED_FIELD_ENUM
1560
1561 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP