1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(java_lang_ThreadGroup) \
61 f(java_lang_AssertionStatusDirectives) \
62 f(java_lang_ref_SoftReference) \
63 f(java_lang_invoke_MethodHandle) \
64 f(java_lang_invoke_DirectMethodHandle) \
65 f(java_lang_invoke_MemberName) \
66 f(java_lang_invoke_ResolvedMethodName) \
67 f(java_lang_invoke_LambdaForm) \
68 f(java_lang_invoke_MethodType) \
69 f(java_lang_invoke_CallSite) \
70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
71 f(java_security_AccessControlContext) \
72 f(java_lang_reflect_AccessibleObject) \
73 f(java_lang_reflect_Method) \
74 f(java_lang_reflect_Constructor) \
75 f(java_lang_reflect_Field) \
76 f(java_nio_Buffer) \
77 f(reflect_ConstantPool) \
78 f(reflect_UnsafeStaticFieldAccessorImpl) \
79 f(java_lang_reflect_Parameter) \
80 f(java_lang_Module) \
81 f(java_lang_StackTraceElement) \
82 f(java_lang_StackFrameInfo) \
83 f(java_lang_LiveStackFrameInfo) \
84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int coder_offset;
98
99 static bool initialized;
100
101 static Handle basic_create(int length, bool byte_arr, TRAPS);
102
103 static inline void set_coder(oop string, jbyte coder);
104
105 public:
106
107 // Coders
108 enum Coder {
109 CODER_LATIN1 = 0,
110 CODER_UTF16 = 1
111 };
112
113 static void compute_offsets();
114 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
115
116 // Instance creation
117 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
118 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
119 static Handle create_from_str(const char* utf8_str, TRAPS);
120 static oop create_oop_from_str(const char* utf8_str, TRAPS);
121 static Handle create_from_symbol(Symbol* symbol, TRAPS);
122 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
123 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
124
125 static void set_compact_strings(bool value);
126
127 static int value_offset_in_bytes() {
128 assert(initialized && (value_offset > 0), "Must be initialized");
129 return value_offset;
130 }
131 static int hash_offset_in_bytes() {
132 assert(initialized && (hash_offset > 0), "Must be initialized");
133 return hash_offset;
134 }
135 static int coder_offset_in_bytes() {
136 assert(initialized && (coder_offset > 0), "Must be initialized");
137 return coder_offset;
138 }
139
140 static inline void set_value_raw(oop string, typeArrayOop buffer);
141 static inline void set_value(oop string, typeArrayOop buffer);
142 static inline void set_hash(oop string, unsigned int hash);
143
144 // Accessors
145 static inline typeArrayOop value(oop java_string);
146 static inline typeArrayOop value_no_keepalive(oop java_string);
147 static inline unsigned int hash(oop java_string);
148 static inline bool is_latin1(oop java_string);
149 static inline int length(oop java_string);
150 static inline int length(oop java_string, typeArrayOop string_value);
151 static int utf8_length(oop java_string);
152 static int utf8_length(oop java_string, typeArrayOop string_value);
153
154 // String converters
155 static char* as_utf8_string(oop java_string);
156 static char* as_utf8_string(oop java_string, char* buf, int buflen);
157 static char* as_utf8_string(oop java_string, int start, int len);
158 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
159 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
160 static char* as_platform_dependent_str(Handle java_string, TRAPS);
161 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
162 // produce an ascii string with all other values quoted using \u####
163 static char* as_quoted_ascii(oop java_string);
164
165 // Compute the hash value for a java.lang.String object which would
166 // contain the characters passed in.
167 //
168 // As the hash value used by the String object itself, in
169 // String.hashCode(). This value is normally calculated in Java code
170 // in the String.hashCode method(), but is precomputed for String
171 // objects in the shared archive file.
172 // hash P(31) from Kernighan & Ritchie
173 //
174 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
175 static unsigned int hash_code(const jchar* s, int len) {
176 unsigned int h = 0;
177 while (len-- > 0) {
178 h = 31*h + (unsigned int) *s;
179 s++;
180 }
181 return h;
182 }
183
184 static unsigned int hash_code(const jbyte* s, int len) {
185 unsigned int h = 0;
186 while (len-- > 0) {
187 h = 31*h + (((unsigned int) *s) & 0xFF);
188 s++;
189 }
190 return h;
191 }
192
193 static unsigned int hash_code(oop java_string);
194
195 static bool equals(oop java_string, const jchar* chars, int len);
196 static bool equals(oop str1, oop str2);
197 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
198
199 // Conversion between '.' and '/' formats
200 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
201 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
202
203 // Conversion
204 static Symbol* as_symbol(oop java_string, TRAPS);
205 static Symbol* as_symbol_or_null(oop java_string);
206
207 // Testers
208 static bool is_instance(oop obj);
209 static inline bool is_instance_inlined(oop obj);
210
211 // Debugging
212 static void print(oop java_string, outputStream* st);
213 friend class JavaClasses;
214 friend class StringTable;
215 };
216
217
218 // Interface to java.lang.Class objects
219
220 #define CLASS_INJECTED_FIELDS(macro) \
221 macro(java_lang_Class, klass, intptr_signature, false) \
222 macro(java_lang_Class, array_klass, intptr_signature, false) \
223 macro(java_lang_Class, oop_size, int_signature, false) \
224 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
225 macro(java_lang_Class, protection_domain, object_signature, false) \
226 macro(java_lang_Class, signers, object_signature, false) \
227 macro(java_lang_Class, source_file, object_signature, false) \
228
229 class java_lang_Class : AllStatic {
230 friend class VMStructs;
231 friend class JVMCIVMStructs;
232
233 private:
234 // The fake offsets are added by the class loader when java.lang.Class is loaded
235
236 static int _klass_offset;
237 static int _array_klass_offset;
238
239 static int _oop_size_offset;
240 static int _static_oop_field_count_offset;
241
242 static int _protection_domain_offset;
243 static int _init_lock_offset;
244 static int _signers_offset;
245 static int _class_loader_offset;
246 static int _module_offset;
247 static int _component_mirror_offset;
248 static int _name_offset;
249 static int _source_file_offset;
250
251 static bool offsets_computed;
252 static int classRedefinedCount_offset;
253
254 static GrowableArray<Klass*>* _fixup_mirror_list;
255 static GrowableArray<Klass*>* _fixup_module_field_list;
256
257 static void set_init_lock(oop java_class, oop init_lock);
258 static void set_protection_domain(oop java_class, oop protection_domain);
259 static void set_class_loader(oop java_class, oop class_loader);
260 static void set_component_mirror(oop java_class, oop comp_mirror);
261 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
262 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
263 public:
264 static void allocate_fixup_lists();
265 static void compute_offsets();
266
267 // Instance creation
268 static void create_mirror(Klass* k, Handle class_loader, Handle module,
269 Handle protection_domain, TRAPS);
270 static void fixup_mirror(Klass* k, TRAPS);
271 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
272
273 // Archiving
274 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
275 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
276 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
277 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
278 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
279 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
280 Handle protection_domain,
281 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
282
283 static void fixup_module_field(Klass* k, Handle module);
284
285 // Conversion
286 static Klass* as_Klass(oop java_class);
287 static Klass* as_Klass_raw(oop java_class);
288 static void set_klass(oop java_class, Klass* klass);
289 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
290 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
291 static void print_signature(oop java_class, outputStream *st);
292 static const char* as_external_name(oop java_class);
293 // Testing
294 static bool is_instance(oop obj);
295
296 static bool is_primitive(oop java_class);
297 static BasicType primitive_type(oop java_class);
298 static oop primitive_mirror(BasicType t);
299 // JVM_NewArray support
300 static Klass* array_klass_acquire(oop java_class);
301 static void release_set_array_klass(oop java_class, Klass* klass);
302 // compiler support for class operations
303 static int klass_offset_in_bytes() { return _klass_offset; }
304 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
305 // Support for classRedefinedCount field
306 static int classRedefinedCount(oop the_class_mirror);
307 static void set_classRedefinedCount(oop the_class_mirror, int value);
308
309 // Support for embedded per-class oops
310 static oop protection_domain(oop java_class);
311 static oop init_lock(oop java_class);
312 static oop component_mirror(oop java_class);
313 static objArrayOop signers(oop java_class);
314 static void set_signers(oop java_class, objArrayOop signers);
315
316 static oop class_loader(oop java_class);
317 static void set_module(oop java_class, oop module);
318 static oop module(oop java_class);
319
320 static oop name(Handle java_class, TRAPS);
321
322 static oop source_file(oop java_class);
323 static void set_source_file(oop java_class, oop source_file);
324
325 static int oop_size(oop java_class);
326 static int oop_size_raw(oop java_class);
327 static void set_oop_size(HeapWord* java_class, int size);
328 static int static_oop_field_count(oop java_class);
329 static int static_oop_field_count_raw(oop java_class);
330 static void set_static_oop_field_count(oop java_class, int size);
331
332 static GrowableArray<Klass*>* fixup_mirror_list() {
333 return _fixup_mirror_list;
334 }
335 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
336 _fixup_mirror_list = v;
337 }
338
339 static GrowableArray<Klass*>* fixup_module_field_list() {
340 return _fixup_module_field_list;
341 }
342 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
343 _fixup_module_field_list = v;
344 }
345
346 // Debugging
347 friend class JavaClasses;
348 friend class InstanceKlass; // verification code accesses offsets
349 friend class ClassFileParser; // access to number_of_fake_fields
350 };
351
352 // Interface to java.lang.Thread objects
353
354 class java_lang_Thread : AllStatic {
355 private:
356 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
357 // so we compute the offsets at startup rather than hard-wiring them.
358 static int _name_offset;
359 static int _group_offset;
360 static int _contextClassLoader_offset;
361 static int _inheritedAccessControlContext_offset;
362 static int _priority_offset;
363 static int _eetop_offset;
364 static int _daemon_offset;
365 static int _stillborn_offset;
366 static int _stackSize_offset;
367 static int _tid_offset;
368 static int _thread_status_offset;
369 static int _park_blocker_offset;
370 static int _park_event_offset ;
371
372 static void compute_offsets();
373
374 public:
375 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
376
377 // Instance creation
378 static oop create();
379 // Returns the JavaThread associated with the thread obj
380 static JavaThread* thread(oop java_thread);
381 // Set JavaThread for instance
382 static void set_thread(oop java_thread, JavaThread* thread);
383 // Name
384 static oop name(oop java_thread);
385 static void set_name(oop java_thread, oop name);
386 // Priority
387 static ThreadPriority priority(oop java_thread);
388 static void set_priority(oop java_thread, ThreadPriority priority);
389 // Thread group
390 static oop threadGroup(oop java_thread);
391 // Stillborn
392 static bool is_stillborn(oop java_thread);
393 static void set_stillborn(oop java_thread);
394 // Alive (NOTE: this is not really a field, but provides the correct
395 // definition without doing a Java call)
396 static bool is_alive(oop java_thread);
397 // Daemon
398 static bool is_daemon(oop java_thread);
399 static void set_daemon(oop java_thread);
400 // Context ClassLoader
401 static oop context_class_loader(oop java_thread);
402 // Control context
403 static oop inherited_access_control_context(oop java_thread);
404 // Stack size hint
405 static jlong stackSize(oop java_thread);
406 // Thread ID
407 static jlong thread_id(oop java_thread);
408
409 // Blocker object responsible for thread parking
410 static oop park_blocker(oop java_thread);
411
412 // Pointer to type-stable park handler, encoded as jlong.
413 // Should be set when apparently null
414 // For details, see unsafe.cpp Unsafe_Unpark
415 static jlong park_event(oop java_thread);
416 static bool set_park_event(oop java_thread, jlong ptr);
417
418 // Java Thread Status for JVMTI and M&M use.
419 // This thread status info is saved in threadStatus field of
420 // java.lang.Thread java class.
421 enum ThreadStatus {
422 NEW = 0,
423 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
424 JVMTI_THREAD_STATE_RUNNABLE,
425 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
426 JVMTI_THREAD_STATE_WAITING +
427 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
428 JVMTI_THREAD_STATE_SLEEPING,
429 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
430 JVMTI_THREAD_STATE_WAITING +
431 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
432 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
433 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
434 JVMTI_THREAD_STATE_WAITING +
435 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
436 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
437 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
438 JVMTI_THREAD_STATE_WAITING +
439 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
440 JVMTI_THREAD_STATE_PARKED,
441 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
442 JVMTI_THREAD_STATE_WAITING +
443 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
444 JVMTI_THREAD_STATE_PARKED,
445 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
446 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
447 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
448 };
449 // Write thread status info to threadStatus field of java.lang.Thread.
450 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
451 // Read thread status info from threadStatus field of java.lang.Thread.
452 static ThreadStatus get_thread_status(oop java_thread_oop);
453
454 static const char* thread_status_name(oop java_thread_oop);
455
456 // Debugging
457 friend class JavaClasses;
458 };
459
460 // Interface to java.lang.ThreadGroup objects
461
462 class java_lang_ThreadGroup : AllStatic {
463 private:
464 static int _parent_offset;
465 static int _name_offset;
466 static int _threads_offset;
467 static int _groups_offset;
468 static int _maxPriority_offset;
469 static int _destroyed_offset;
470 static int _daemon_offset;
471 static int _nthreads_offset;
472 static int _ngroups_offset;
473
474 static void compute_offsets();
475
476 public:
477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
478
479 // parent ThreadGroup
480 static oop parent(oop java_thread_group);
481 // name
482 static const char* name(oop java_thread_group);
483 // ("name as oop" accessor is not necessary)
484 // Number of threads in group
485 static int nthreads(oop java_thread_group);
486 // threads
487 static objArrayOop threads(oop java_thread_group);
488 // Number of threads in group
489 static int ngroups(oop java_thread_group);
490 // groups
491 static objArrayOop groups(oop java_thread_group);
492 // maxPriority in group
493 static ThreadPriority maxPriority(oop java_thread_group);
494 // Destroyed
495 static bool is_destroyed(oop java_thread_group);
496 // Daemon
497 static bool is_daemon(oop java_thread_group);
498 // Debugging
499 friend class JavaClasses;
500 };
501
502
503
504 // Interface to java.lang.Throwable objects
505
506 class java_lang_Throwable: AllStatic {
507 friend class BacktraceBuilder;
508 friend class BacktraceIterator;
509
510 private:
511 // Offsets
512 enum {
513 hc_backtrace_offset = 0,
514 hc_detailMessage_offset = 1,
515 hc_cause_offset = 2, // New since 1.4
516 hc_stackTrace_offset = 3 // New since 1.4
517 };
518 // Trace constants
519 enum {
520 trace_methods_offset = 0,
521 trace_bcis_offset = 1,
522 trace_mirrors_offset = 2,
523 trace_names_offset = 3,
524 trace_next_offset = 4,
525 trace_size = 5,
526 trace_chunk_size = 32
527 };
528
529 static int backtrace_offset;
530 static int detailMessage_offset;
531 static int stackTrace_offset;
532 static int depth_offset;
533 static int static_unassigned_stacktrace_offset;
534
535 // StackTrace (programmatic access, new since 1.4)
536 static void clear_stacktrace(oop throwable);
537 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
538 static void set_stacktrace(oop throwable, oop st_element_array);
539 static oop unassigned_stacktrace();
540
541 public:
542 // Backtrace
543 static oop backtrace(oop throwable);
544 static void set_backtrace(oop throwable, oop value);
545 static int depth(oop throwable);
546 static void set_depth(oop throwable, int value);
547 // Needed by JVMTI to filter out this internal field.
548 static int get_backtrace_offset() { return backtrace_offset;}
549 static int get_detailMessage_offset() { return detailMessage_offset;}
550 // Message
551 static oop message(oop throwable);
552 static void set_message(oop throwable, oop value);
553 static Symbol* detail_message(oop throwable);
554 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
555 static void print_stack_usage(Handle stream);
556
557 static void compute_offsets();
558 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
559
560 // Allocate space for backtrace (created but stack trace not filled in)
561 static void allocate_backtrace(Handle throwable, TRAPS);
562 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
563 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
564 // Fill in current stack trace, can cause GC
565 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
566 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
567 // Programmatic access to stack trace
568 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
569 // Printing
570 static void print(oop throwable, outputStream* st);
571 static void print_stack_trace(Handle throwable, outputStream* st);
572 static void java_printStackTrace(Handle throwable, TRAPS);
573 // Debugging
574 friend class JavaClasses;
575 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
576 static bool get_method_and_bci(oop throwable, Method** method, int* bci);
577 };
578
579
580 // Interface to java.lang.reflect.AccessibleObject objects
581
582 class java_lang_reflect_AccessibleObject: AllStatic {
583 private:
584 // Note that to reduce dependencies on the JDK we compute these
585 // offsets at run-time.
586 static int override_offset;
587
588 static void compute_offsets();
589
590 public:
591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
592
593 // Accessors
594 static jboolean override(oop reflect);
595 static void set_override(oop reflect, jboolean value);
596
597 // Debugging
598 friend class JavaClasses;
599 };
600
601
602 // Interface to java.lang.reflect.Method objects
603
604 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
605 private:
606 // Note that to reduce dependencies on the JDK we compute these
607 // offsets at run-time.
608 static int clazz_offset;
609 static int name_offset;
610 static int returnType_offset;
611 static int parameterTypes_offset;
612 static int exceptionTypes_offset;
613 static int slot_offset;
614 static int modifiers_offset;
615 static int signature_offset;
616 static int annotations_offset;
617 static int parameter_annotations_offset;
618 static int annotation_default_offset;
619
620 static void compute_offsets();
621 public:
622 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
623
624 // Allocation
625 static Handle create(TRAPS);
626
627 // Accessors
628 static oop clazz(oop reflect);
629 static void set_clazz(oop reflect, oop value);
630
631 static void set_name(oop method, oop value);
632
633 static oop return_type(oop method);
634 static void set_return_type(oop method, oop value);
635
636 static oop parameter_types(oop method);
637 static void set_parameter_types(oop method, oop value);
638
639 static int slot(oop reflect);
640 static void set_slot(oop reflect, int value);
641
642 static void set_exception_types(oop method, oop value);
643 static void set_modifiers(oop method, int value);
644 static void set_signature(oop method, oop value);
645 static void set_annotations(oop method, oop value);
646 static void set_parameter_annotations(oop method, oop value);
647 static void set_annotation_default(oop method, oop value);
648
649 // Debugging
650 friend class JavaClasses;
651 };
652
653
654 // Interface to java.lang.reflect.Constructor objects
655
656 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
657 private:
658 // Note that to reduce dependencies on the JDK we compute these
659 // offsets at run-time.
660 static int clazz_offset;
661 static int parameterTypes_offset;
662 static int exceptionTypes_offset;
663 static int slot_offset;
664 static int modifiers_offset;
665 static int signature_offset;
666 static int annotations_offset;
667 static int parameter_annotations_offset;
668
669 static void compute_offsets();
670 public:
671 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
672
673 // Allocation
674 static Handle create(TRAPS);
675
676 // Accessors
677 static oop clazz(oop reflect);
678 static void set_clazz(oop reflect, oop value);
679
680 static oop parameter_types(oop constructor);
681 static void set_parameter_types(oop constructor, oop value);
682
683 static int slot(oop reflect);
684 static void set_slot(oop reflect, int value);
685
686 static void set_exception_types(oop constructor, oop value);
687 static void set_modifiers(oop constructor, int value);
688 static void set_signature(oop constructor, oop value);
689 static void set_annotations(oop constructor, oop value);
690 static void set_parameter_annotations(oop method, oop value);
691
692 // Debugging
693 friend class JavaClasses;
694 };
695
696
697 // Interface to java.lang.reflect.Field objects
698
699 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
700 private:
701 // Note that to reduce dependencies on the JDK we compute these
702 // offsets at run-time.
703 static int clazz_offset;
704 static int name_offset;
705 static int type_offset;
706 static int slot_offset;
707 static int modifiers_offset;
708 static int signature_offset;
709 static int annotations_offset;
710
711 static void compute_offsets();
712
713 public:
714 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
715
716 // Allocation
717 static Handle create(TRAPS);
718
719 // Accessors
720 static oop clazz(oop reflect);
721 static void set_clazz(oop reflect, oop value);
722
723 static oop name(oop field);
724 static void set_name(oop field, oop value);
725
726 static oop type(oop field);
727 static void set_type(oop field, oop value);
728
729 static int slot(oop reflect);
730 static void set_slot(oop reflect, int value);
731
732 static int modifiers(oop field);
733 static void set_modifiers(oop field, int value);
734
735 static void set_signature(oop constructor, oop value);
736 static void set_annotations(oop constructor, oop value);
737 static void set_parameter_annotations(oop method, oop value);
738 static void set_annotation_default(oop method, oop value);
739
740 // Debugging
741 friend class JavaClasses;
742 };
743
744 class java_lang_reflect_Parameter {
745 private:
746 // Note that to reduce dependencies on the JDK we compute these
747 // offsets at run-time.
748 static int name_offset;
749 static int modifiers_offset;
750 static int index_offset;
751 static int executable_offset;
752
753 static void compute_offsets();
754
755 public:
756 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
757
758 // Allocation
759 static Handle create(TRAPS);
760
761 // Accessors
762 static oop name(oop field);
763 static void set_name(oop field, oop value);
764
765 static int index(oop reflect);
766 static void set_index(oop reflect, int value);
767
768 static int modifiers(oop reflect);
769 static void set_modifiers(oop reflect, int value);
770
771 static oop executable(oop constructor);
772 static void set_executable(oop constructor, oop value);
773
774 friend class JavaClasses;
775 };
776
777 #define MODULE_INJECTED_FIELDS(macro) \
778 macro(java_lang_Module, module_entry, intptr_signature, false)
779
780 class java_lang_Module {
781 private:
782 static int loader_offset;
783 static int name_offset;
784 static int _module_entry_offset;
785 static void compute_offsets();
786
787 public:
788 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
789
790 // Allocation
791 static Handle create(Handle loader, Handle module_name, TRAPS);
792
793 // Testers
794 static bool is_instance(oop obj);
795
796 // Accessors
797 static oop loader(oop module);
798 static void set_loader(oop module, oop value);
799
800 static oop name(oop module);
801 static void set_name(oop module, oop value);
802
803 static ModuleEntry* module_entry(oop module);
804 static void set_module_entry(oop module, ModuleEntry* module_entry);
805
806 friend class JavaClasses;
807 };
808
809 // Interface to jdk.internal.reflect.ConstantPool objects
810 class reflect_ConstantPool {
811 private:
812 // Note that to reduce dependencies on the JDK we compute these
813 // offsets at run-time.
814 static int _oop_offset;
815
816 static void compute_offsets();
817
818 public:
819 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
820
821 // Allocation
822 static Handle create(TRAPS);
823
824 // Accessors
825 static void set_cp(oop reflect, ConstantPool* value);
826 static int oop_offset() {
827 return _oop_offset;
828 }
829
830 static ConstantPool* get_cp(oop reflect);
831
832 // Debugging
833 friend class JavaClasses;
834 };
835
836 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
837 class reflect_UnsafeStaticFieldAccessorImpl {
838 private:
839 static int _base_offset;
840 static void compute_offsets();
841
842 public:
843 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
844
845 static int base_offset() {
846 return _base_offset;
847 }
848
849 // Debugging
850 friend class JavaClasses;
851 };
852
853 // Interface to java.lang primitive type boxing objects:
854 // - java.lang.Boolean
855 // - java.lang.Character
856 // - java.lang.Float
857 // - java.lang.Double
858 // - java.lang.Byte
859 // - java.lang.Short
860 // - java.lang.Integer
861 // - java.lang.Long
862
863 // This could be separated out into 8 individual classes.
864
865 class java_lang_boxing_object: AllStatic {
866 private:
867 enum {
868 hc_value_offset = 0
869 };
870 static int value_offset;
871 static int long_value_offset;
872
873 static oop initialize_and_allocate(BasicType type, TRAPS);
874 public:
875 // Allocation. Returns a boxed value, or NULL for invalid type.
876 static oop create(BasicType type, jvalue* value, TRAPS);
877 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
878 static BasicType get_value(oop box, jvalue* value);
879 static BasicType set_value(oop box, jvalue* value);
880 static BasicType basic_type(oop box);
881 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
882 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
883 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
884 static void print(BasicType type, jvalue* value, outputStream* st);
885
886 static int value_offset_in_bytes(BasicType type) {
887 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
888 value_offset;
889 }
890
891 // Debugging
892 friend class JavaClasses;
893 };
894
895
896
897 // Interface to java.lang.ref.Reference objects
898
899 class java_lang_ref_Reference: AllStatic {
900 public:
901 enum {
902 hc_referent_offset = 0,
903 hc_queue_offset = 1,
904 hc_next_offset = 2,
905 hc_discovered_offset = 3 // Is not last, see SoftRefs.
906 };
907
908 static int referent_offset;
909 static int queue_offset;
910 static int next_offset;
911 static int discovered_offset;
912
913 // Accessors
914 static inline oop referent(oop ref);
915 static inline void set_referent(oop ref, oop value);
916 static inline void set_referent_raw(oop ref, oop value);
917 static inline HeapWord* referent_addr_raw(oop ref);
918 static inline oop next(oop ref);
919 static inline void set_next(oop ref, oop value);
920 static inline void set_next_raw(oop ref, oop value);
921 static inline HeapWord* next_addr_raw(oop ref);
922 static inline oop discovered(oop ref);
923 static inline void set_discovered(oop ref, oop value);
924 static inline void set_discovered_raw(oop ref, oop value);
925 static inline HeapWord* discovered_addr_raw(oop ref);
926 static inline oop queue(oop ref);
927 static inline void set_queue(oop ref, oop value);
928 static bool is_referent_field(oop obj, ptrdiff_t offset);
929 static inline bool is_final(oop ref);
930 static inline bool is_phantom(oop ref);
931 };
932
933
934 // Interface to java.lang.ref.SoftReference objects
935
936 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
937 public:
938 static int timestamp_offset;
939 static int static_clock_offset;
940
941 // Accessors
942 static jlong timestamp(oop ref);
943
944 // Accessors for statics
945 static jlong clock();
946 static void set_clock(jlong value);
947
948 static void compute_offsets();
949 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
950 };
951
952 // Interface to java.lang.invoke.MethodHandle objects
953
954 class MethodHandleEntry;
955
956 class java_lang_invoke_MethodHandle: AllStatic {
957 friend class JavaClasses;
958
959 private:
960 static int _type_offset; // the MethodType of this MH
961 static int _form_offset; // the LambdaForm of this MH
962
963 static void compute_offsets();
964
965 public:
966 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
967
968 // Accessors
969 static oop type(oop mh);
970 static void set_type(oop mh, oop mtype);
971
972 static oop form(oop mh);
973 static void set_form(oop mh, oop lform);
974
975 // Testers
976 static bool is_subclass(Klass* klass) {
977 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
978 }
979 static bool is_instance(oop obj);
980
981 // Accessors for code generation:
982 static int type_offset_in_bytes() { return _type_offset; }
983 static int form_offset_in_bytes() { return _form_offset; }
984 };
985
986 // Interface to java.lang.invoke.DirectMethodHandle objects
987
988 class java_lang_invoke_DirectMethodHandle: AllStatic {
989 friend class JavaClasses;
990
991 private:
992 static int _member_offset; // the MemberName of this DMH
993
994 static void compute_offsets();
995
996 public:
997 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
998
999 // Accessors
1000 static oop member(oop mh);
1001
1002 // Testers
1003 static bool is_subclass(Klass* klass) {
1004 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1005 }
1006 static bool is_instance(oop obj);
1007
1008 // Accessors for code generation:
1009 static int member_offset_in_bytes() { return _member_offset; }
1010 };
1011
1012 // Interface to java.lang.invoke.LambdaForm objects
1013 // (These are a private interface for managing adapter code generation.)
1014
1015 class java_lang_invoke_LambdaForm: AllStatic {
1016 friend class JavaClasses;
1017
1018 private:
1019 static int _vmentry_offset; // type is MemberName
1020
1021 static void compute_offsets();
1022
1023 public:
1024 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1025
1026 // Accessors
1027 static oop vmentry(oop lform);
1028 static void set_vmentry(oop lform, oop invoker);
1029
1030 // Testers
1031 static bool is_subclass(Klass* klass) {
1032 return SystemDictionary::LambdaForm_klass() != NULL &&
1033 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1034 }
1035 static bool is_instance(oop obj);
1036
1037 // Accessors for code generation:
1038 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1039 };
1040
1041
1042 // Interface to java.lang.invoke.MemberName objects
1043 // (These are a private interface for Java code to query the class hierarchy.)
1044
1045 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1046 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1047 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1048
1049 class java_lang_invoke_ResolvedMethodName : AllStatic {
1050 friend class JavaClasses;
1051
1052 static int _vmtarget_offset;
1053 static int _vmholder_offset;
1054
1055 static void compute_offsets();
1056 public:
1057 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1058
1059 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1060
1061 static Method* vmtarget(oop resolved_method);
1062 static void set_vmtarget(oop resolved_method, Method* method);
1063
1064 // find or create resolved member name
1065 static oop find_resolved_method(const methodHandle& m, TRAPS);
1066
1067 static bool is_instance(oop resolved_method);
1068 };
1069
1070
1071 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1072 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1073
1074
1075 class java_lang_invoke_MemberName: AllStatic {
1076 friend class JavaClasses;
1077
1078 private:
1079 // From java.lang.invoke.MemberName:
1080 // private Class<?> clazz; // class in which the method is defined
1081 // private String name; // may be null if not yet materialized
1082 // private Object type; // may be null if not yet materialized
1083 // private int flags; // modifier bits; see reflect.Modifier
1084 // private ResolvedMethodName method; // holds VM-specific target value
1085 // private intptr_t vmindex; // member index within class or interface
1086 static int _clazz_offset;
1087 static int _name_offset;
1088 static int _type_offset;
1089 static int _flags_offset;
1090 static int _method_offset;
1091 static int _vmindex_offset;
1092
1093 static void compute_offsets();
1094
1095 public:
1096 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1097 // Accessors
1098 static oop clazz(oop mname);
1099 static void set_clazz(oop mname, oop clazz);
1100
1101 static oop type(oop mname);
1102 static void set_type(oop mname, oop type);
1103
1104 static oop name(oop mname);
1105 static void set_name(oop mname, oop name);
1106
1107 static int flags(oop mname);
1108 static void set_flags(oop mname, int flags);
1109
1110 // Link through ResolvedMethodName field to get Method*
1111 static Method* vmtarget(oop mname);
1112 static void set_method(oop mname, oop method);
1113
1114 static intptr_t vmindex(oop mname);
1115 static void set_vmindex(oop mname, intptr_t index);
1116
1117 // Testers
1118 static bool is_subclass(Klass* klass) {
1119 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1120 }
1121 static bool is_instance(oop obj);
1122
1123 static bool is_method(oop obj);
1124
1125 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1126 enum {
1127 MN_IS_METHOD = 0x00010000, // method (not constructor)
1128 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1129 MN_IS_FIELD = 0x00040000, // field
1130 MN_IS_TYPE = 0x00080000, // nested type
1131 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1132 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1133 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1134 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1135 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1136 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1137 };
1138
1139 // Accessors for code generation:
1140 static int clazz_offset_in_bytes() { return _clazz_offset; }
1141 static int type_offset_in_bytes() { return _type_offset; }
1142 static int name_offset_in_bytes() { return _name_offset; }
1143 static int flags_offset_in_bytes() { return _flags_offset; }
1144 static int method_offset_in_bytes() { return _method_offset; }
1145 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1146 };
1147
1148
1149 // Interface to java.lang.invoke.MethodType objects
1150
1151 class java_lang_invoke_MethodType: AllStatic {
1152 friend class JavaClasses;
1153
1154 private:
1155 static int _rtype_offset;
1156 static int _ptypes_offset;
1157
1158 static void compute_offsets();
1159
1160 public:
1161 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1162 // Accessors
1163 static oop rtype(oop mt);
1164 static objArrayOop ptypes(oop mt);
1165
1166 static oop ptype(oop mt, int index);
1167 static int ptype_count(oop mt);
1168
1169 static int ptype_slot_count(oop mt); // extra counts for long/double
1170 static int rtype_slot_count(oop mt); // extra counts for long/double
1171
1172 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1173 static void print_signature(oop mt, outputStream* st);
1174
1175 static bool is_instance(oop obj);
1176
1177 static bool equals(oop mt1, oop mt2);
1178
1179 // Accessors for code generation:
1180 static int rtype_offset_in_bytes() { return _rtype_offset; }
1181 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1182 };
1183
1184
1185 // Interface to java.lang.invoke.CallSite objects
1186
1187 class java_lang_invoke_CallSite: AllStatic {
1188 friend class JavaClasses;
1189
1190 private:
1191 static int _target_offset;
1192 static int _context_offset;
1193
1194 static void compute_offsets();
1195
1196 public:
1197 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1198 // Accessors
1199 static oop target( oop site);
1200 static void set_target( oop site, oop target);
1201 static void set_target_volatile( oop site, oop target);
1202
1203 static oop context_no_keepalive(oop site);
1204
1205 // Testers
1206 static bool is_subclass(Klass* klass) {
1207 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1208 }
1209 static bool is_instance(oop obj);
1210
1211 // Accessors for code generation:
1212 static int target_offset_in_bytes() { return _target_offset; }
1213 };
1214
1215 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1216
1217 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1218 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1219 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1220
1221 class DependencyContext;
1222
1223 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1224 friend class JavaClasses;
1225
1226 private:
1227 static int _vmdependencies_offset;
1228 static int _last_cleanup_offset;
1229
1230 static void compute_offsets();
1231
1232 public:
1233 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1234 // Accessors
1235 static DependencyContext vmdependencies(oop context);
1236
1237 // Testers
1238 static bool is_subclass(Klass* klass) {
1239 return klass->is_subclass_of(SystemDictionary::Context_klass());
1240 }
1241 static bool is_instance(oop obj);
1242 };
1243
1244 // Interface to java.security.AccessControlContext objects
1245
1246 class java_security_AccessControlContext: AllStatic {
1247 private:
1248 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1249 // so we compute the offsets at startup rather than hard-wiring them.
1250 static int _context_offset;
1251 static int _privilegedContext_offset;
1252 static int _isPrivileged_offset;
1253 static int _isAuthorized_offset;
1254
1255 static void compute_offsets();
1256 public:
1257 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1258 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1259
1260 // Debugging/initialization
1261 friend class JavaClasses;
1262 };
1263
1264
1265 // Interface to java.lang.ClassLoader objects
1266
1267 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1268 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1269
1270 class java_lang_ClassLoader : AllStatic {
1271 private:
1272 static int _loader_data_offset;
1273 static bool offsets_computed;
1274 static int parent_offset;
1275 static int parallelCapable_offset;
1276 static int name_offset;
1277 static int nameAndId_offset;
1278 static int unnamedModule_offset;
1279
1280 public:
1281 static void compute_offsets();
1282 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1283
1284 static ClassLoaderData* loader_data_acquire(oop loader);
1285 static ClassLoaderData* loader_data_raw(oop loader);
1286 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1287
1288 static oop parent(oop loader);
1289 static oop name(oop loader);
1290 static oop nameAndId(oop loader);
1291 static bool isAncestor(oop loader, oop cl);
1292
1293 // Support for parallelCapable field
1294 static bool parallelCapable(oop the_class_mirror);
1295
1296 static bool is_trusted_loader(oop loader);
1297
1298 // Return true if this is one of the class loaders associated with
1299 // the generated bytecodes for reflection.
1300 static bool is_reflection_class_loader(oop loader);
1301
1302 // Fix for 4474172
1303 static oop non_reflection_class_loader(oop loader);
1304
1305 // Testers
1306 static bool is_subclass(Klass* klass) {
1307 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1308 }
1309 static bool is_instance(oop obj);
1310
1311 static oop unnamedModule(oop loader);
1312
1313 // Debugging
1314 friend class JavaClasses;
1315 friend class ClassFileParser; // access to number_of_fake_fields
1316 };
1317
1318
1319 // Interface to java.lang.System objects
1320
1321 class java_lang_System : AllStatic {
1322 private:
1323 static int static_in_offset;
1324 static int static_out_offset;
1325 static int static_err_offset;
1326 static int static_security_offset;
1327
1328 public:
1329 static int in_offset_in_bytes();
1330 static int out_offset_in_bytes();
1331 static int err_offset_in_bytes();
1332
1333 static void compute_offsets();
1334 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1335
1336 // Debugging
1337 friend class JavaClasses;
1338 };
1339
1340
1341 // Interface to java.lang.StackTraceElement objects
1342
1343 class java_lang_StackTraceElement: AllStatic {
1344 private:
1345 static int declaringClassObject_offset;
1346 static int classLoaderName_offset;
1347 static int moduleName_offset;
1348 static int moduleVersion_offset;
1349 static int declaringClass_offset;
1350 static int methodName_offset;
1351 static int fileName_offset;
1352 static int lineNumber_offset;
1353
1354 // Setters
1355 static void set_classLoaderName(oop element, oop value);
1356 static void set_moduleName(oop element, oop value);
1357 static void set_moduleVersion(oop element, oop value);
1358 static void set_declaringClass(oop element, oop value);
1359 static void set_methodName(oop element, oop value);
1360 static void set_fileName(oop element, oop value);
1361 static void set_lineNumber(oop element, int value);
1362 static void set_declaringClassObject(oop element, oop value);
1363
1364 public:
1365 // Create an instance of StackTraceElement
1366 static oop create(const methodHandle& method, int bci, TRAPS);
1367
1368 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1369 int version, int bci, Symbol* name, TRAPS);
1370
1371 static void compute_offsets();
1372 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1373
1374 // Debugging
1375 friend class JavaClasses;
1376 };
1377
1378
1379 class Backtrace: AllStatic {
1380 public:
1381 // Helper backtrace functions to store bci|version together.
1382 static int merge_bci_and_version(int bci, int version);
1383 static int merge_mid_and_cpref(int mid, int cpref);
1384 static int bci_at(unsigned int merged);
1385 static int version_at(unsigned int merged);
1386 static int mid_at(unsigned int merged);
1387 static int cpref_at(unsigned int merged);
1388 static int get_line_number(const methodHandle& method, int bci);
1389 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1390
1391 // Debugging
1392 friend class JavaClasses;
1393 };
1394
1395 // Interface to java.lang.StackFrameInfo objects
1396
1397 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1398 macro(java_lang_StackFrameInfo, version, short_signature, false)
1399
1400 class java_lang_StackFrameInfo: AllStatic {
1401 private:
1402 static int _memberName_offset;
1403 static int _bci_offset;
1404 static int _version_offset;
1405
1406 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1407
1408 public:
1409 // Setters
1410 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1411 static void set_bci(oop info, int value);
1412
1413 static void set_version(oop info, short value);
1414
1415 static void compute_offsets();
1416 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1417
1418 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1419
1420 // Debugging
1421 friend class JavaClasses;
1422 };
1423
1424 class java_lang_LiveStackFrameInfo: AllStatic {
1425 private:
1426 static int _monitors_offset;
1427 static int _locals_offset;
1428 static int _operands_offset;
1429 static int _mode_offset;
1430
1431 public:
1432 static void set_monitors(oop info, oop value);
1433 static void set_locals(oop info, oop value);
1434 static void set_operands(oop info, oop value);
1435 static void set_mode(oop info, int value);
1436
1437 static void compute_offsets();
1438 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1439
1440 // Debugging
1441 friend class JavaClasses;
1442 };
1443
1444 // Interface to java.lang.AssertionStatusDirectives objects
1445
1446 class java_lang_AssertionStatusDirectives: AllStatic {
1447 private:
1448 static int classes_offset;
1449 static int classEnabled_offset;
1450 static int packages_offset;
1451 static int packageEnabled_offset;
1452 static int deflt_offset;
1453
1454 public:
1455 // Setters
1456 static void set_classes(oop obj, oop val);
1457 static void set_classEnabled(oop obj, oop val);
1458 static void set_packages(oop obj, oop val);
1459 static void set_packageEnabled(oop obj, oop val);
1460 static void set_deflt(oop obj, bool val);
1461
1462 static void compute_offsets();
1463 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1464
1465 // Debugging
1466 friend class JavaClasses;
1467 };
1468
1469
1470 class java_nio_Buffer: AllStatic {
1471 private:
1472 static int _limit_offset;
1473
1474 public:
1475 static int limit_offset();
1476 static void compute_offsets();
1477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1478 };
1479
1480 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1481 private:
1482 static int _owner_offset;
1483 public:
1484 static void compute_offsets();
1485 static oop get_owner_threadObj(oop obj);
1486 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1487 };
1488
1489 // Use to declare fields that need to be injected into Java classes
1490 // for the JVM to use. The name_index and signature_index are
1491 // declared in vmSymbols. The may_be_java flag is used to declare
1492 // fields that might already exist in Java but should be injected if
1493 // they don't. Otherwise the field is unconditionally injected and
1494 // the JVM uses the injected one. This is to ensure that name
1495 // collisions don't occur. In general may_be_java should be false
1496 // unless there's a good reason.
1497
1498 class InjectedField {
1499 public:
1500 const SystemDictionary::WKID klass_id;
1501 const vmSymbols::SID name_index;
1502 const vmSymbols::SID signature_index;
1503 const bool may_be_java;
1504
1505
1506 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1507 Symbol* name() const { return lookup_symbol(name_index); }
1508 Symbol* signature() const { return lookup_symbol(signature_index); }
1509
1510 int compute_offset();
1511
1512 // Find the Symbol for this index
1513 static Symbol* lookup_symbol(int symbol_index) {
1514 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1515 }
1516 };
1517
1518 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1519 klass##_##name##_enum,
1520
1521 #define ALL_INJECTED_FIELDS(macro) \
1522 CLASS_INJECTED_FIELDS(macro) \
1523 CLASSLOADER_INJECTED_FIELDS(macro) \
1524 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1525 MEMBERNAME_INJECTED_FIELDS(macro) \
1526 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1527 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1528 MODULE_INJECTED_FIELDS(macro)
1529
1530 // Interface to hard-coded offset checking
1531
1532 class JavaClasses : AllStatic {
1533 private:
1534
1535 static InjectedField _injected_fields[];
1536
1537 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1538 public:
1539 enum InjectedFieldID {
1540 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1541 MAX_enum
1542 };
1543
1544 static int compute_injected_offset(InjectedFieldID id);
1545
1546 static void compute_hard_coded_offsets();
1547 static void compute_offsets();
1548 static void check_offsets() PRODUCT_RETURN;
1549 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1550 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1551 };
1552
1553 #undef DECLARE_INJECTED_FIELD_ENUM
1554
1555 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP