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