1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
24
25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50 #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(jchar* unicode, int len, TRAPS);
118 static oop create_oop_from_unicode(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, 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
224 class java_lang_Class : AllStatic {
225 friend class VMStructs;
226 friend class JVMCIVMStructs;
227
228 private:
229 // The fake offsets are added by the class loader when java.lang.Class is loaded
230
231 static int _klass_offset;
232 static int _array_klass_offset;
233
234 static int _oop_size_offset;
235 static int _static_oop_field_count_offset;
236
237 static int _protection_domain_offset;
238 static int _init_lock_offset;
239 static int _signers_offset;
240 static int _class_loader_offset;
241 static int _module_offset;
242 static int _component_mirror_offset;
243 static int _box_mirror_offset;
244 static int _value_mirror_offset;
245
246 static bool offsets_computed;
247 static int classRedefinedCount_offset;
248
249 static GrowableArray<Klass*>* _fixup_mirror_list;
250 static GrowableArray<Klass*>* _fixup_module_field_list;
251
252 static void set_init_lock(oop java_class, oop init_lock);
253 static void set_protection_domain(oop java_class, oop protection_domain);
254 static void set_class_loader(oop java_class, oop class_loader);
255 static void set_component_mirror(oop java_class, oop comp_mirror);
256 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
257 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
258 public:
259 static void allocate_fixup_lists();
260 static void compute_offsets();
261
262 // Instance creation
263 static void create_mirror(Klass* k, Handle class_loader, Handle module,
264 Handle protection_domain, TRAPS);
265 static void fixup_mirror(Klass* k, TRAPS);
266 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
267 static oop create_value_mirror(Klass* k, Handle mirror, 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 void set_box_mirror(oop java_class, oop mirror);
317 static oop box_mirror(oop java_class);
318 static void set_value_mirror(oop java_class, oop mirror);
319 static oop value_mirror(oop java_class);
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 static int type_annotations_offset;
614
615 static void compute_offsets();
616
617 public:
618 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
619
620 // Allocation
621 static Handle create(TRAPS);
622
623 // Accessors
624 static oop clazz(oop reflect);
625 static void set_clazz(oop reflect, oop value);
626
627 static oop name(oop method);
628 static void set_name(oop method, oop value);
629
630 static oop return_type(oop method);
631 static void set_return_type(oop method, oop value);
632
633 static oop parameter_types(oop method);
634 static void set_parameter_types(oop method, oop value);
635
636 static oop exception_types(oop method);
637 static void set_exception_types(oop method, oop value);
638
639 static int slot(oop reflect);
640 static void set_slot(oop reflect, int value);
641
642 static int modifiers(oop method);
643 static void set_modifiers(oop method, int value);
644
645 static bool has_signature_field();
646 static oop signature(oop method);
647 static void set_signature(oop method, oop value);
648
649 static bool has_annotations_field();
650 static oop annotations(oop method);
651 static void set_annotations(oop method, oop value);
652
653 static bool has_parameter_annotations_field();
654 static oop parameter_annotations(oop method);
655 static void set_parameter_annotations(oop method, oop value);
656
657 static bool has_annotation_default_field();
658 static oop annotation_default(oop method);
659 static void set_annotation_default(oop method, oop value);
660
661 static bool has_type_annotations_field();
662 static oop type_annotations(oop method);
663 static void set_type_annotations(oop method, oop value);
664
665 // Debugging
666 friend class JavaClasses;
667 };
668
669
670 // Interface to java.lang.reflect.Constructor objects
671
672 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
673 private:
674 // Note that to reduce dependencies on the JDK we compute these
675 // offsets at run-time.
676 static int clazz_offset;
677 static int parameterTypes_offset;
678 static int exceptionTypes_offset;
679 static int slot_offset;
680 static int modifiers_offset;
681 static int signature_offset;
682 static int annotations_offset;
683 static int parameter_annotations_offset;
684 static int type_annotations_offset;
685
686 static void compute_offsets();
687
688 public:
689 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
690
691 // Allocation
692 static Handle create(TRAPS);
693
694 // Accessors
695 static oop clazz(oop reflect);
696 static void set_clazz(oop reflect, oop value);
697
698 static oop parameter_types(oop constructor);
699 static void set_parameter_types(oop constructor, oop value);
700
701 static oop exception_types(oop constructor);
702 static void set_exception_types(oop constructor, oop value);
703
704 static int slot(oop reflect);
705 static void set_slot(oop reflect, int value);
706
707 static int modifiers(oop constructor);
708 static void set_modifiers(oop constructor, int value);
709
710 static bool has_signature_field();
711 static oop signature(oop constructor);
712 static void set_signature(oop constructor, oop value);
713
714 static bool has_annotations_field();
715 static oop annotations(oop constructor);
716 static void set_annotations(oop constructor, oop value);
717
718 static bool has_parameter_annotations_field();
719 static oop parameter_annotations(oop method);
720 static void set_parameter_annotations(oop method, oop value);
721
722 static bool has_type_annotations_field();
723 static oop type_annotations(oop constructor);
724 static void set_type_annotations(oop constructor, oop value);
725
726 // Debugging
727 friend class JavaClasses;
728 };
729
730
731 // Interface to java.lang.reflect.Field objects
732
733 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
734 private:
735 // Note that to reduce dependencies on the JDK we compute these
736 // offsets at run-time.
737 static int clazz_offset;
738 static int name_offset;
739 static int type_offset;
740 static int slot_offset;
741 static int modifiers_offset;
742 static int signature_offset;
743 static int annotations_offset;
744 static int type_annotations_offset;
745
746 static void compute_offsets();
747
748 public:
749 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
750
751 // Allocation
752 static Handle create(TRAPS);
753
754 // Accessors
755 static oop clazz(oop reflect);
756 static void set_clazz(oop reflect, oop value);
757
758 static oop name(oop field);
759 static void set_name(oop field, oop value);
760
761 static oop type(oop field);
762 static void set_type(oop field, oop value);
763
764 static int slot(oop reflect);
765 static void set_slot(oop reflect, int value);
766
767 static int modifiers(oop field);
768 static void set_modifiers(oop field, int value);
769
770 static bool has_signature_field();
771 static oop signature(oop constructor);
772 static void set_signature(oop constructor, oop value);
773
774 static bool has_annotations_field();
775 static oop annotations(oop constructor);
776 static void set_annotations(oop constructor, oop value);
777
778 static bool has_parameter_annotations_field();
779 static oop parameter_annotations(oop method);
780 static void set_parameter_annotations(oop method, oop value);
781
782 static bool has_annotation_default_field();
783 static oop annotation_default(oop method);
784 static void set_annotation_default(oop method, oop value);
785
786 static bool has_type_annotations_field();
787 static oop type_annotations(oop field);
788 static void set_type_annotations(oop field, oop value);
789
790 // Debugging
791 friend class JavaClasses;
792 };
793
794 class java_lang_reflect_Parameter {
795 private:
796 // Note that to reduce dependencies on the JDK we compute these
797 // offsets at run-time.
798 static int name_offset;
799 static int modifiers_offset;
800 static int index_offset;
801 static int executable_offset;
802
803 static void compute_offsets();
804
805 public:
806 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
807
808 // Allocation
809 static Handle create(TRAPS);
810
811 // Accessors
812 static oop name(oop field);
813 static void set_name(oop field, oop value);
814
815 static int index(oop reflect);
816 static void set_index(oop reflect, int value);
817
818 static int modifiers(oop reflect);
819 static void set_modifiers(oop reflect, int value);
820
821 static oop executable(oop constructor);
822 static void set_executable(oop constructor, oop value);
823
824 friend class JavaClasses;
825 };
826
827 #define MODULE_INJECTED_FIELDS(macro) \
828 macro(java_lang_Module, module_entry, intptr_signature, false)
829
830 class java_lang_Module {
831 private:
832 static int loader_offset;
833 static int name_offset;
834 static int _module_entry_offset;
835 static void compute_offsets();
836
837 public:
838 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
839
840 // Allocation
841 static Handle create(Handle loader, Handle module_name, TRAPS);
842
843 // Testers
844 static bool is_instance(oop obj);
845
846 // Accessors
847 static oop loader(oop module);
848 static void set_loader(oop module, oop value);
849
850 static oop name(oop module);
851 static void set_name(oop module, oop value);
852
853 static ModuleEntry* module_entry(oop module);
854 static void set_module_entry(oop module, ModuleEntry* module_entry);
855
856 friend class JavaClasses;
857 };
858
859 // Interface to jdk.internal.reflect.ConstantPool objects
860 class reflect_ConstantPool {
861 private:
862 // Note that to reduce dependencies on the JDK we compute these
863 // offsets at run-time.
864 static int _oop_offset;
865
866 static void compute_offsets();
867
868 public:
869 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
870
871 // Allocation
872 static Handle create(TRAPS);
873
874 // Accessors
875 static void set_cp(oop reflect, ConstantPool* value);
876 static int oop_offset() {
877 return _oop_offset;
878 }
879
880 static ConstantPool* get_cp(oop reflect);
881
882 // Debugging
883 friend class JavaClasses;
884 };
885
886 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
887 class reflect_UnsafeStaticFieldAccessorImpl {
888 private:
889 static int _base_offset;
890 static void compute_offsets();
891
892 public:
893 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
894
895 static int base_offset() {
896 return _base_offset;
897 }
898
899 // Debugging
900 friend class JavaClasses;
901 };
902
903 // Interface to java.lang primitive type boxing objects:
904 // - java.lang.Boolean
905 // - java.lang.Character
906 // - java.lang.Float
907 // - java.lang.Double
908 // - java.lang.Byte
909 // - java.lang.Short
910 // - java.lang.Integer
911 // - java.lang.Long
912
913 // This could be separated out into 8 individual classes.
914
915 class java_lang_boxing_object: AllStatic {
916 private:
917 enum {
918 hc_value_offset = 0
919 };
920 static int value_offset;
921 static int long_value_offset;
922
923 static oop initialize_and_allocate(BasicType type, TRAPS);
924 public:
925 // Allocation. Returns a boxed value, or NULL for invalid type.
926 static oop create(BasicType type, jvalue* value, TRAPS);
927 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
928 static BasicType get_value(oop box, jvalue* value);
929 static BasicType set_value(oop box, jvalue* value);
930 static BasicType basic_type(oop box);
931 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
932 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
933 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
934 static void print(BasicType type, jvalue* value, outputStream* st);
935
936 static int value_offset_in_bytes(BasicType type) {
937 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
938 value_offset;
939 }
940
941 // Debugging
942 friend class JavaClasses;
943 };
944
945
946
947 // Interface to java.lang.ref.Reference objects
948
949 class java_lang_ref_Reference: AllStatic {
950 public:
951 enum {
952 hc_referent_offset = 0,
953 hc_queue_offset = 1,
954 hc_next_offset = 2,
955 hc_discovered_offset = 3 // Is not last, see SoftRefs.
956 };
957
958 static int referent_offset;
959 static int queue_offset;
960 static int next_offset;
961 static int discovered_offset;
962
963 // Accessors
964 static inline oop referent(oop ref);
965 static inline void set_referent(oop ref, oop value);
966 static inline void set_referent_raw(oop ref, oop value);
967 static inline HeapWord* referent_addr_raw(oop ref);
968 static inline oop next(oop ref);
969 static inline void set_next(oop ref, oop value);
970 static inline void set_next_raw(oop ref, oop value);
971 static inline HeapWord* next_addr_raw(oop ref);
972 static inline oop discovered(oop ref);
973 static inline void set_discovered(oop ref, oop value);
974 static inline void set_discovered_raw(oop ref, oop value);
975 static inline HeapWord* discovered_addr_raw(oop ref);
976 static inline oop queue(oop ref);
977 static inline void set_queue(oop ref, oop value);
978 static bool is_referent_field(oop obj, ptrdiff_t offset);
979 static inline bool is_phantom(oop ref);
980 };
981
982
983 // Interface to java.lang.ref.SoftReference objects
984
985 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
986 public:
987 static int timestamp_offset;
988 static int static_clock_offset;
989
990 // Accessors
991 static jlong timestamp(oop ref);
992
993 // Accessors for statics
994 static jlong clock();
995 static void set_clock(jlong value);
996
997 static void compute_offsets();
998 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
999 };
1000
1001 // Interface to java.lang.invoke.MethodHandle objects
1002
1003 class MethodHandleEntry;
1004
1005 class java_lang_invoke_MethodHandle: AllStatic {
1006 friend class JavaClasses;
1007
1008 private:
1009 static int _type_offset; // the MethodType of this MH
1010 static int _form_offset; // the LambdaForm of this MH
1011
1012 static void compute_offsets();
1013
1014 public:
1015 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1016
1017 // Accessors
1018 static oop type(oop mh);
1019 static void set_type(oop mh, oop mtype);
1020
1021 static oop form(oop mh);
1022 static void set_form(oop mh, oop lform);
1023
1024 // Testers
1025 static bool is_subclass(Klass* klass) {
1026 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1027 }
1028 static bool is_instance(oop obj);
1029
1030 // Accessors for code generation:
1031 static int type_offset_in_bytes() { return _type_offset; }
1032 static int form_offset_in_bytes() { return _form_offset; }
1033 };
1034
1035 // Interface to java.lang.invoke.DirectMethodHandle objects
1036
1037 class java_lang_invoke_DirectMethodHandle: AllStatic {
1038 friend class JavaClasses;
1039
1040 private:
1041 static int _member_offset; // the MemberName of this DMH
1042
1043 static void compute_offsets();
1044
1045 public:
1046 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1047
1048 // Accessors
1049 static oop member(oop mh);
1050
1051 // Testers
1052 static bool is_subclass(Klass* klass) {
1053 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1054 }
1055 static bool is_instance(oop obj);
1056
1057 // Accessors for code generation:
1058 static int member_offset_in_bytes() { return _member_offset; }
1059 };
1060
1061 // Interface to java.lang.invoke.LambdaForm objects
1062 // (These are a private interface for managing adapter code generation.)
1063
1064 class java_lang_invoke_LambdaForm: AllStatic {
1065 friend class JavaClasses;
1066
1067 private:
1068 static int _vmentry_offset; // type is MemberName
1069
1070 static void compute_offsets();
1071
1072 public:
1073 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1074
1075 // Accessors
1076 static oop vmentry(oop lform);
1077 static void set_vmentry(oop lform, oop invoker);
1078
1079 // Testers
1080 static bool is_subclass(Klass* klass) {
1081 return SystemDictionary::LambdaForm_klass() != NULL &&
1082 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1083 }
1084 static bool is_instance(oop obj);
1085
1086 // Accessors for code generation:
1087 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1088 };
1089
1090
1091 // Interface to java.lang.invoke.MemberName objects
1092 // (These are a private interface for Java code to query the class hierarchy.)
1093
1094 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1095 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1096 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1097
1098 class java_lang_invoke_ResolvedMethodName : AllStatic {
1099 friend class JavaClasses;
1100
1101 static int _vmtarget_offset;
1102 static int _vmholder_offset;
1103
1104 static void compute_offsets();
1105 public:
1106 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1107
1108 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1109
1110 static Method* vmtarget(oop resolved_method);
1111 static void set_vmtarget(oop resolved_method, Method* method);
1112
1113 // find or create resolved member name
1114 static oop find_resolved_method(const methodHandle& m, TRAPS);
1115
1116 static bool is_instance(oop resolved_method);
1117 };
1118
1119
1120 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1121 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1122
1123
1124 class java_lang_invoke_MemberName: AllStatic {
1125 friend class JavaClasses;
1126
1127 private:
1128 // From java.lang.invoke.MemberName:
1129 // private Class<?> clazz; // class in which the method is defined
1130 // private String name; // may be null if not yet materialized
1131 // private Object type; // may be null if not yet materialized
1132 // private int flags; // modifier bits; see reflect.Modifier
1133 // private ResolvedMethodName method; // holds VM-specific target value
1134 // private intptr_t vmindex; // member index within class or interface
1135 static int _clazz_offset;
1136 static int _name_offset;
1137 static int _type_offset;
1138 static int _flags_offset;
1139 static int _method_offset;
1140 static int _vmindex_offset;
1141
1142 static void compute_offsets();
1143
1144 public:
1145 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1146 // Accessors
1147 static oop clazz(oop mname);
1148 static void set_clazz(oop mname, oop clazz);
1149
1150 static oop type(oop mname);
1151 static void set_type(oop mname, oop type);
1152
1153 static oop name(oop mname);
1154 static void set_name(oop mname, oop name);
1155
1156 static int flags(oop mname);
1157 static void set_flags(oop mname, int flags);
1158
1159 // Link through ResolvedMethodName field to get Method*
1160 static Method* vmtarget(oop mname);
1161 static void set_method(oop mname, oop method);
1162
1163 static intptr_t vmindex(oop mname);
1164 static void set_vmindex(oop mname, intptr_t index);
1165
1166 // Testers
1167 static bool is_subclass(Klass* klass) {
1168 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1169 }
1170 static bool is_instance(oop obj);
1171
1172 static bool is_method(oop obj);
1173
1174 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1175 enum {
1176 MN_IS_METHOD = 0x00010000, // method (not constructor)
1177 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1178 MN_IS_FIELD = 0x00040000, // field
1179 MN_IS_TYPE = 0x00080000, // nested type
1180 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1181 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1182 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1183 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1184 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1185 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1186 };
1187
1188 // Accessors for code generation:
1189 static int clazz_offset_in_bytes() { return _clazz_offset; }
1190 static int type_offset_in_bytes() { return _type_offset; }
1191 static int name_offset_in_bytes() { return _name_offset; }
1192 static int flags_offset_in_bytes() { return _flags_offset; }
1193 static int method_offset_in_bytes() { return _method_offset; }
1194 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1195 };
1196
1197
1198 // Interface to java.lang.invoke.MethodType objects
1199
1200 class java_lang_invoke_MethodType: AllStatic {
1201 friend class JavaClasses;
1202
1203 private:
1204 static int _rtype_offset;
1205 static int _ptypes_offset;
1206
1207 static void compute_offsets();
1208
1209 public:
1210 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1211 // Accessors
1212 static oop rtype(oop mt);
1213 static objArrayOop ptypes(oop mt);
1214
1215 static oop ptype(oop mt, int index);
1216 static int ptype_count(oop mt);
1217
1218 static int ptype_slot_count(oop mt); // extra counts for long/double
1219 static int rtype_slot_count(oop mt); // extra counts for long/double
1220
1221 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1222 static void print_signature(oop mt, outputStream* st);
1223
1224 static bool is_instance(oop obj);
1225
1226 static bool equals(oop mt1, oop mt2);
1227
1228 // Accessors for code generation:
1229 static int rtype_offset_in_bytes() { return _rtype_offset; }
1230 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1231 };
1232
1233
1234 // Interface to java.lang.invoke.CallSite objects
1235
1236 class java_lang_invoke_CallSite: AllStatic {
1237 friend class JavaClasses;
1238
1239 private:
1240 static int _target_offset;
1241 static int _context_offset;
1242
1243 static void compute_offsets();
1244
1245 public:
1246 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1247 // Accessors
1248 static oop target( oop site);
1249 static void set_target( oop site, oop target);
1250 static void set_target_volatile( oop site, oop target);
1251
1252 static oop context(oop site);
1253
1254 // Testers
1255 static bool is_subclass(Klass* klass) {
1256 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1257 }
1258 static bool is_instance(oop obj);
1259
1260 // Accessors for code generation:
1261 static int target_offset_in_bytes() { return _target_offset; }
1262 };
1263
1264 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1265
1266 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1267 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1268
1269 class DependencyContext;
1270
1271 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1272 friend class JavaClasses;
1273
1274 private:
1275 static int _vmdependencies_offset;
1276
1277 static void compute_offsets();
1278
1279 public:
1280 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1281 // Accessors
1282 static DependencyContext vmdependencies(oop context);
1283
1284 // Testers
1285 static bool is_subclass(Klass* klass) {
1286 return klass->is_subclass_of(SystemDictionary::Context_klass());
1287 }
1288 static bool is_instance(oop obj);
1289 };
1290
1291 // Interface to java.security.AccessControlContext objects
1292
1293 class java_security_AccessControlContext: AllStatic {
1294 private:
1295 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1296 // so we compute the offsets at startup rather than hard-wiring them.
1297 static int _context_offset;
1298 static int _privilegedContext_offset;
1299 static int _isPrivileged_offset;
1300 static int _isAuthorized_offset;
1301
1302 static void compute_offsets();
1303 public:
1304 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1305 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1306
1307 static bool is_authorized(Handle context);
1308
1309 // Debugging/initialization
1310 friend class JavaClasses;
1311 };
1312
1313
1314 // Interface to java.lang.ClassLoader objects
1315
1316 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1317 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1318
1319 class java_lang_ClassLoader : AllStatic {
1320 private:
1321 static int _loader_data_offset;
1322 static bool offsets_computed;
1323 static int parent_offset;
1324 static int parallelCapable_offset;
1325 static int name_offset;
1326 static int nameAndId_offset;
1327 static int unnamedModule_offset;
1328
1329 public:
1330 static void compute_offsets();
1331 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1332
1333 static ClassLoaderData* loader_data(oop loader);
1334 static ClassLoaderData* loader_data_raw(oop loader);
1335 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1336
1337 static oop parent(oop loader);
1338 static oop name(oop loader);
1339 static oop nameAndId(oop loader);
1340 static bool isAncestor(oop loader, oop cl);
1341
1342 // Support for parallelCapable field
1343 static bool parallelCapable(oop the_class_mirror);
1344
1345 static bool is_trusted_loader(oop loader);
1346
1347 // Return true if this is one of the class loaders associated with
1348 // the generated bytecodes for reflection.
1349 static bool is_reflection_class_loader(oop loader);
1350
1351 // Fix for 4474172
1352 static oop non_reflection_class_loader(oop loader);
1353
1354 // Testers
1355 static bool is_subclass(Klass* klass) {
1356 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1357 }
1358 static bool is_instance(oop obj);
1359
1360 static oop unnamedModule(oop loader);
1361
1362 // Debugging
1363 friend class JavaClasses;
1364 friend class ClassFileParser; // access to number_of_fake_fields
1365 };
1366
1367
1368 // Interface to java.lang.System objects
1369
1370 class java_lang_System : AllStatic {
1371 private:
1372 static int static_in_offset;
1373 static int static_out_offset;
1374 static int static_err_offset;
1375 static int static_security_offset;
1376
1377 public:
1378 static int in_offset_in_bytes();
1379 static int out_offset_in_bytes();
1380 static int err_offset_in_bytes();
1381
1382 static bool has_security_manager();
1383
1384 static void compute_offsets();
1385 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1386
1387 // Debugging
1388 friend class JavaClasses;
1389 };
1390
1391
1392 // Interface to java.lang.StackTraceElement objects
1393
1394 class java_lang_StackTraceElement: AllStatic {
1395 private:
1396 static int declaringClassObject_offset;
1397 static int classLoaderName_offset;
1398 static int moduleName_offset;
1399 static int moduleVersion_offset;
1400 static int declaringClass_offset;
1401 static int methodName_offset;
1402 static int fileName_offset;
1403 static int lineNumber_offset;
1404
1405 // Setters
1406 static void set_classLoaderName(oop element, oop value);
1407 static void set_moduleName(oop element, oop value);
1408 static void set_moduleVersion(oop element, oop value);
1409 static void set_declaringClass(oop element, oop value);
1410 static void set_methodName(oop element, oop value);
1411 static void set_fileName(oop element, oop value);
1412 static void set_lineNumber(oop element, int value);
1413 static void set_declaringClassObject(oop element, oop value);
1414
1415 public:
1416 // Create an instance of StackTraceElement
1417 static oop create(const methodHandle& method, int bci, TRAPS);
1418
1419 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1420 int version, int bci, Symbol* name, TRAPS);
1421
1422 static void compute_offsets();
1423 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1424
1425 // Debugging
1426 friend class JavaClasses;
1427 };
1428
1429
1430 class Backtrace: AllStatic {
1431 public:
1432 // Helper backtrace functions to store bci|version together.
1433 static int merge_bci_and_version(int bci, int version);
1434 static int merge_mid_and_cpref(int mid, int cpref);
1435 static int bci_at(unsigned int merged);
1436 static int version_at(unsigned int merged);
1437 static int mid_at(unsigned int merged);
1438 static int cpref_at(unsigned int merged);
1439 static int get_line_number(const methodHandle& method, int bci);
1440 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1441
1442 // Debugging
1443 friend class JavaClasses;
1444 };
1445
1446 // Interface to java.lang.StackFrameInfo objects
1447
1448 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1449 macro(java_lang_StackFrameInfo, version, short_signature, false)
1450
1451 class java_lang_StackFrameInfo: AllStatic {
1452 private:
1453 static int _memberName_offset;
1454 static int _bci_offset;
1455 static int _version_offset;
1456
1457 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1458
1459 public:
1460 // Setters
1461 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1462 static void set_bci(oop info, int value);
1463
1464 static void set_version(oop info, short value);
1465
1466 static void compute_offsets();
1467 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1468
1469 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1470
1471 // Debugging
1472 friend class JavaClasses;
1473 };
1474
1475 class java_lang_LiveStackFrameInfo: AllStatic {
1476 private:
1477 static int _monitors_offset;
1478 static int _locals_offset;
1479 static int _operands_offset;
1480 static int _mode_offset;
1481
1482 public:
1483 static void set_monitors(oop info, oop value);
1484 static void set_locals(oop info, oop value);
1485 static void set_operands(oop info, oop value);
1486 static void set_mode(oop info, int value);
1487
1488 static void compute_offsets();
1489 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1490
1491 // Debugging
1492 friend class JavaClasses;
1493 };
1494
1495 // Interface to java.lang.AssertionStatusDirectives objects
1496
1497 class java_lang_AssertionStatusDirectives: AllStatic {
1498 private:
1499 static int classes_offset;
1500 static int classEnabled_offset;
1501 static int packages_offset;
1502 static int packageEnabled_offset;
1503 static int deflt_offset;
1504
1505 public:
1506 // Setters
1507 static void set_classes(oop obj, oop val);
1508 static void set_classEnabled(oop obj, oop val);
1509 static void set_packages(oop obj, oop val);
1510 static void set_packageEnabled(oop obj, oop val);
1511 static void set_deflt(oop obj, bool val);
1512
1513 static void compute_offsets();
1514 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1515
1516 // Debugging
1517 friend class JavaClasses;
1518 };
1519
1520
1521 class java_nio_Buffer: AllStatic {
1522 private:
1523 static int _limit_offset;
1524
1525 public:
1526 static int limit_offset();
1527 static void compute_offsets();
1528 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1529 };
1530
1531 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1532 private:
1533 static int _owner_offset;
1534 public:
1535 static void compute_offsets();
1536 static oop get_owner_threadObj(oop obj);
1537 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1538 };
1539
1540 // Use to declare fields that need to be injected into Java classes
1541 // for the JVM to use. The name_index and signature_index are
1542 // declared in vmSymbols. The may_be_java flag is used to declare
1543 // fields that might already exist in Java but should be injected if
1544 // they don't. Otherwise the field is unconditionally injected and
1545 // the JVM uses the injected one. This is to ensure that name
1546 // collisions don't occur. In general may_be_java should be false
1547 // unless there's a good reason.
1548
1549 class InjectedField {
1550 public:
1551 const SystemDictionary::WKID klass_id;
1552 const vmSymbols::SID name_index;
1553 const vmSymbols::SID signature_index;
1554 const bool may_be_java;
1555
1556
1557 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1558 Symbol* name() const { return lookup_symbol(name_index); }
1559 Symbol* signature() const { return lookup_symbol(signature_index); }
1560
1561 int compute_offset();
1562
1563 // Find the Symbol for this index
1564 static Symbol* lookup_symbol(int symbol_index) {
1565 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1566 }
1567 };
1568
1569 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1570 klass##_##name##_enum,
1571
1572 #define ALL_INJECTED_FIELDS(macro) \
1573 CLASS_INJECTED_FIELDS(macro) \
1574 CLASSLOADER_INJECTED_FIELDS(macro) \
1575 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1576 MEMBERNAME_INJECTED_FIELDS(macro) \
1577 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1578 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1579 MODULE_INJECTED_FIELDS(macro)
1580
1581 // Interface to hard-coded offset checking
1582
1583 class JavaClasses : AllStatic {
1584 private:
1585
1586 static InjectedField _injected_fields[];
1587
1588 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1589 public:
1590 enum InjectedFieldID {
1591 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1592 MAX_enum
1593 };
1594
1595 static int compute_injected_offset(InjectedFieldID id);
1596
1597 static void compute_hard_coded_offsets();
1598 static void compute_offsets();
1599 static void check_offsets() PRODUCT_RETURN;
1600 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1601 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1602 };
1603
1604 #undef DECLARE_INJECTED_FIELD_ENUM
1605
1606 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP