1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 class RecordComponent;
34
35 // Interface for manipulating the basic Java classes.
36 //
37 // All dependencies on layout of actual Java classes should be kept here.
38 // If the layout of any of the classes above changes the offsets must be adjusted.
39 //
40 // For most classes we hardwire the offsets for performance reasons. In certain
41 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
42 // startup since the layout here differs between JDK1.2 and JDK1.3.
43 //
44 // Note that fields (static and non-static) are arranged with oops before non-oops
45 // on a per class basis. The offsets below have to reflect this ordering.
46 //
47 // When editing the layouts please update the check_offset verification code
48 // correspondingly. The names in the enums must be identical to the actual field
49 // names in order for the verification code to work.
50
51 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
52 f(java_lang_Class) \
53 f(java_lang_String) \
54 //end
55
56 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
57 f(java_lang_System) \
58 f(java_lang_ClassLoader) \
59 f(java_lang_Throwable) \
60 f(java_lang_Thread) \
61 f(java_lang_ThreadGroup) \
62 f(java_lang_AssertionStatusDirectives) \
63 f(java_lang_ref_SoftReference) \
64 f(java_lang_invoke_MethodHandle) \
65 f(java_lang_invoke_DirectMethodHandle) \
66 f(java_lang_invoke_MemberName) \
67 f(java_lang_invoke_ResolvedMethodName) \
68 f(java_lang_invoke_LambdaForm) \
69 f(java_lang_invoke_MethodType) \
70 f(java_lang_invoke_CallSite) \
71 f(java_lang_invoke_ConstantCallSite) \
72 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
73 f(java_security_AccessControlContext) \
74 f(java_lang_reflect_AccessibleObject) \
75 f(java_lang_reflect_Method) \
76 f(java_lang_reflect_Constructor) \
77 f(java_lang_reflect_Field) \
78 f(java_lang_reflect_RecordComponent) \
79 f(java_nio_Buffer) \
80 f(reflect_ConstantPool) \
81 f(reflect_UnsafeStaticFieldAccessorImpl) \
82 f(java_lang_reflect_Parameter) \
83 f(java_lang_Module) \
84 f(java_lang_StackTraceElement) \
85 f(java_lang_StackFrameInfo) \
86 f(java_lang_LiveStackFrameInfo) \
87 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
88 f(jdk_internal_misc_UnsafeConstants) \
89 //end
90
91 #define BASIC_JAVA_CLASSES_DO(f) \
92 BASIC_JAVA_CLASSES_DO_PART1(f) \
93 BASIC_JAVA_CLASSES_DO_PART2(f)
94
95 // Interface to java.lang.Object objects
96
97 class java_lang_Object : AllStatic {
98 public:
99 static void register_natives(TRAPS);
100 };
101
102 // Interface to java.lang.String objects
103
104 class java_lang_String : AllStatic {
105 private:
106 static int value_offset;
107 static int hash_offset;
108 static int hashIsZero_offset;
109 static int coder_offset;
110
111 static bool initialized;
112
113 static Handle basic_create(int length, bool byte_arr, TRAPS);
114
115 static inline void set_coder(oop string, jbyte coder);
116
117 public:
118
119 // Coders
120 enum Coder {
121 CODER_LATIN1 = 0,
122 CODER_UTF16 = 1
123 };
124
125 static void compute_offsets();
126 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
127
128 // Instance creation
129 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
130 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
131 static Handle create_from_str(const char* utf8_str, TRAPS);
132 static oop create_oop_from_str(const char* utf8_str, TRAPS);
133 static Handle create_from_symbol(Symbol* symbol, TRAPS);
134 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
135 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
136
137 static void set_compact_strings(bool value);
138
139 static int value_offset_in_bytes() {
140 assert(initialized && (value_offset > 0), "Must be initialized");
141 return value_offset;
142 }
143 static int hash_offset_in_bytes() {
144 assert(initialized && (hash_offset > 0), "Must be initialized");
145 return hash_offset;
146 }
147 static int hashIsZero_offset_in_bytes() {
148 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
149 return hashIsZero_offset;
150 }
151 static int coder_offset_in_bytes() {
152 assert(initialized && (coder_offset > 0), "Must be initialized");
153 return coder_offset;
154 }
155
156 static inline void set_value_raw(oop string, typeArrayOop buffer);
157 static inline void set_value(oop string, typeArrayOop buffer);
158
159 // Accessors
160 static inline typeArrayOop value(oop java_string);
161 static inline typeArrayOop value_no_keepalive(oop java_string);
162 static inline bool hash_is_set(oop string);
163 static inline bool is_latin1(oop java_string);
164 static inline int length(oop java_string);
165 static inline int length(oop java_string, typeArrayOop string_value);
166 static int utf8_length(oop java_string);
167 static int utf8_length(oop java_string, typeArrayOop string_value);
168
169 // String converters
170 static char* as_utf8_string(oop java_string);
171 static char* as_utf8_string(oop java_string, int& length);
172 static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
173 static char* as_utf8_string(oop java_string, char* buf, int buflen);
174 static char* as_utf8_string(oop java_string, int start, int len);
175 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
176 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
177 static char* as_platform_dependent_str(Handle java_string, TRAPS);
178 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
179 // produce an ascii string with all other values quoted using \u####
180 static char* as_quoted_ascii(oop java_string);
181
182 // Compute the hash value for a java.lang.String object which would
183 // contain the characters passed in.
184 //
185 // As the hash value used by the String object itself, in
186 // String.hashCode(). This value is normally calculated in Java code
187 // in the String.hashCode method(), but is precomputed for String
188 // objects in the shared archive file.
189 // hash P(31) from Kernighan & Ritchie
190 //
191 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
192 static unsigned int hash_code(const jchar* s, int len) {
193 unsigned int h = 0;
194 while (len-- > 0) {
195 h = 31*h + (unsigned int) *s;
196 s++;
197 }
198 return h;
199 }
200
201 static unsigned int hash_code(const jbyte* s, int len) {
202 unsigned int h = 0;
203 while (len-- > 0) {
204 h = 31*h + (((unsigned int) *s) & 0xFF);
205 s++;
206 }
207 return h;
208 }
209
210 static unsigned int hash_code(oop java_string);
211
212 static bool equals(oop java_string, const jchar* chars, int len);
213 static bool equals(oop str1, oop str2);
214 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
215
216 // Conversion between '.' and '/' formats
217 static Handle externalize_classname(Handle java_string, TRAPS) {
218 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
219 }
220
221 // Conversion
222 static Symbol* as_symbol(oop java_string);
223 static Symbol* as_symbol_or_null(oop java_string);
224
225 // Testers
226 static bool is_instance(oop obj);
227 static inline bool is_instance_inlined(oop obj);
228
229 // Debugging
230 static void print(oop java_string, outputStream* st);
231 friend class JavaClasses;
232 friend class StringTable;
233 };
234
235
236 // Interface to java.lang.Class objects
237
238 #define CLASS_INJECTED_FIELDS(macro) \
239 macro(java_lang_Class, klass, intptr_signature, false) \
240 macro(java_lang_Class, array_klass, intptr_signature, false) \
241 macro(java_lang_Class, oop_size, int_signature, false) \
242 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
243 macro(java_lang_Class, protection_domain, object_signature, false) \
244 macro(java_lang_Class, signers, object_signature, false) \
245 macro(java_lang_Class, source_file, object_signature, false) \
246
247 class java_lang_Class : AllStatic {
248 friend class VMStructs;
249 friend class JVMCIVMStructs;
250
251 private:
252 // The fake offsets are added by the class loader when java.lang.Class is loaded
253
254 static int _klass_offset;
255 static int _array_klass_offset;
256
257 static int _oop_size_offset;
258 static int _static_oop_field_count_offset;
259
260 static int _protection_domain_offset;
261 static int _init_lock_offset;
262 static int _signers_offset;
263 static int _class_loader_offset;
264 static int _module_offset;
265 static int _component_mirror_offset;
266 static int _name_offset;
267 static int _source_file_offset;
268
269 static bool offsets_computed;
270 static int classRedefinedCount_offset;
271
272 static GrowableArray<Klass*>* _fixup_mirror_list;
273 static GrowableArray<Klass*>* _fixup_module_field_list;
274
275 static void set_init_lock(oop java_class, oop init_lock);
276 static void set_protection_domain(oop java_class, oop protection_domain);
277 static void set_class_loader(oop java_class, oop class_loader);
278 static void set_component_mirror(oop java_class, oop comp_mirror);
279 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
280 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
281 public:
282 static void allocate_fixup_lists();
283 static void compute_offsets();
284
285 // Instance creation
286 static void create_mirror(Klass* k, Handle class_loader, Handle module,
287 Handle protection_domain, TRAPS);
288 static void fixup_mirror(Klass* k, TRAPS);
289 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
290 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
291 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
292
293 // Archiving
294 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
295 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
296 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
297 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
298 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
299 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
300 Handle protection_domain,
301 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
302
303 static void fixup_module_field(Klass* k, Handle module);
304
305 // Conversion
306 static Klass* as_Klass(oop java_class);
307 static Klass* as_Klass_raw(oop java_class);
308 static void set_klass(oop java_class, Klass* klass);
309 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
310 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
311 static void print_signature(oop java_class, outputStream *st);
312 static const char* as_external_name(oop java_class);
313 // Testing
314 static bool is_instance(oop obj);
315
316 static bool is_primitive(oop java_class);
317 static BasicType primitive_type(oop java_class);
318 static oop primitive_mirror(BasicType t);
319 // JVM_NewArray support
320 static Klass* array_klass_acquire(oop java_class);
321 static void release_set_array_klass(oop java_class, Klass* klass);
322 // compiler support for class operations
323 static int klass_offset_in_bytes() { return _klass_offset; }
324 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
325 // Support for classRedefinedCount field
326 static int classRedefinedCount(oop the_class_mirror);
327 static void set_classRedefinedCount(oop the_class_mirror, int value);
328
329 // Support for embedded per-class oops
330 static oop protection_domain(oop java_class);
331 static oop init_lock(oop java_class);
332 static oop component_mirror(oop java_class);
333 static objArrayOop signers(oop java_class);
334 static void set_signers(oop java_class, objArrayOop signers);
335
336 static oop class_loader(oop java_class);
337 static void set_module(oop java_class, oop module);
338 static oop module(oop java_class);
339
340 static oop name(Handle java_class, TRAPS);
341
342 static oop source_file(oop java_class);
343 static void set_source_file(oop java_class, oop source_file);
344
345 static int oop_size(oop java_class);
346 static int oop_size_raw(oop java_class);
347 static void set_oop_size(HeapWord* java_class, int size);
348 static int static_oop_field_count(oop java_class);
349 static int static_oop_field_count_raw(oop java_class);
350 static void set_static_oop_field_count(oop java_class, int size);
351
352 static GrowableArray<Klass*>* fixup_mirror_list() {
353 return _fixup_mirror_list;
354 }
355 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
356 _fixup_mirror_list = v;
357 }
358
359 static GrowableArray<Klass*>* fixup_module_field_list() {
360 return _fixup_module_field_list;
361 }
362 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
363 _fixup_module_field_list = v;
364 }
365
366 // Debugging
367 friend class JavaClasses;
368 friend class InstanceKlass; // verification code accesses offsets
369 friend class ClassFileParser; // access to number_of_fake_fields
370 };
371
372 // Interface to java.lang.Thread objects
373
374 class java_lang_Thread : AllStatic {
375 private:
376 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
377 // so we compute the offsets at startup rather than hard-wiring them.
378 static int _name_offset;
379 static int _group_offset;
380 static int _contextClassLoader_offset;
381 static int _inheritedAccessControlContext_offset;
382 static int _priority_offset;
383 static int _eetop_offset;
384 static int _interrupted_offset;
385 static int _daemon_offset;
386 static int _stillborn_offset;
387 static int _stackSize_offset;
388 static int _tid_offset;
389 static int _thread_status_offset;
390 static int _park_blocker_offset;
391
392 static void compute_offsets();
393
394 public:
395 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
396
397 // Instance creation
398 static oop create();
399 // Returns the JavaThread associated with the thread obj
400 static JavaThread* thread(oop java_thread);
401 // Set JavaThread for instance
402 static void set_thread(oop java_thread, JavaThread* thread);
403 // Interrupted status
404 static bool interrupted(oop java_thread);
405 static void set_interrupted(oop java_thread, bool val);
406 // Name
407 static oop name(oop java_thread);
408 static void set_name(oop java_thread, oop name);
409 // Priority
410 static ThreadPriority priority(oop java_thread);
411 static void set_priority(oop java_thread, ThreadPriority priority);
412 // Thread group
413 static oop threadGroup(oop java_thread);
414 // Stillborn
415 static bool is_stillborn(oop java_thread);
416 static void set_stillborn(oop java_thread);
417 // Alive (NOTE: this is not really a field, but provides the correct
418 // definition without doing a Java call)
419 static bool is_alive(oop java_thread);
420 // Daemon
421 static bool is_daemon(oop java_thread);
422 static void set_daemon(oop java_thread);
423 // Context ClassLoader
424 static oop context_class_loader(oop java_thread);
425 // Control context
426 static oop inherited_access_control_context(oop java_thread);
427 // Stack size hint
428 static jlong stackSize(oop java_thread);
429 // Thread ID
430 static jlong thread_id(oop java_thread);
431
432 // Blocker object responsible for thread parking
433 static oop park_blocker(oop java_thread);
434
435 // Java Thread Status for JVMTI and M&M use.
436 // This thread status info is saved in threadStatus field of
437 // java.lang.Thread java class.
438 enum ThreadStatus {
439 NEW = 0,
440 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
441 JVMTI_THREAD_STATE_RUNNABLE,
442 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
443 JVMTI_THREAD_STATE_WAITING +
444 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
445 JVMTI_THREAD_STATE_SLEEPING,
446 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
447 JVMTI_THREAD_STATE_WAITING +
448 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
449 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
450 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
451 JVMTI_THREAD_STATE_WAITING +
452 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
453 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
454 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
455 JVMTI_THREAD_STATE_WAITING +
456 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
457 JVMTI_THREAD_STATE_PARKED,
458 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
459 JVMTI_THREAD_STATE_WAITING +
460 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
461 JVMTI_THREAD_STATE_PARKED,
462 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
463 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
464 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
465 };
466 // Write thread status info to threadStatus field of java.lang.Thread.
467 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
468 // Read thread status info from threadStatus field of java.lang.Thread.
469 static ThreadStatus get_thread_status(oop java_thread_oop);
470
471 static const char* thread_status_name(oop java_thread_oop);
472
473 // Debugging
474 friend class JavaClasses;
475 };
476
477 // Interface to java.lang.ThreadGroup objects
478
479 class java_lang_ThreadGroup : AllStatic {
480 private:
481 static int _parent_offset;
482 static int _name_offset;
483 static int _threads_offset;
484 static int _groups_offset;
485 static int _maxPriority_offset;
486 static int _destroyed_offset;
487 static int _daemon_offset;
488 static int _nthreads_offset;
489 static int _ngroups_offset;
490
491 static void compute_offsets();
492
493 public:
494 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
495
496 // parent ThreadGroup
497 static oop parent(oop java_thread_group);
498 // name
499 static const char* name(oop java_thread_group);
500 // ("name as oop" accessor is not necessary)
501 // Number of threads in group
502 static int nthreads(oop java_thread_group);
503 // threads
504 static objArrayOop threads(oop java_thread_group);
505 // Number of threads in group
506 static int ngroups(oop java_thread_group);
507 // groups
508 static objArrayOop groups(oop java_thread_group);
509 // maxPriority in group
510 static ThreadPriority maxPriority(oop java_thread_group);
511 // Destroyed
512 static bool is_destroyed(oop java_thread_group);
513 // Daemon
514 static bool is_daemon(oop java_thread_group);
515 // Debugging
516 friend class JavaClasses;
517 };
518
519
520
521 // Interface to java.lang.Throwable objects
522
523 class java_lang_Throwable: AllStatic {
524 friend class BacktraceBuilder;
525 friend class BacktraceIterator;
526
527 private:
528 // Offsets
529 enum {
530 hc_backtrace_offset = 0,
531 hc_detailMessage_offset = 1,
532 hc_cause_offset = 2, // New since 1.4
533 hc_stackTrace_offset = 3 // New since 1.4
534 };
535 // Trace constants
536 enum {
537 trace_methods_offset = 0,
538 trace_bcis_offset = 1,
539 trace_mirrors_offset = 2,
540 trace_names_offset = 3,
541 trace_next_offset = 4,
542 trace_hidden_offset = 5,
543 trace_size = 6,
544 trace_chunk_size = 32
545 };
546
547 static int backtrace_offset;
548 static int detailMessage_offset;
549 static int stackTrace_offset;
550 static int depth_offset;
551 static int static_unassigned_stacktrace_offset;
552
553 // StackTrace (programmatic access, new since 1.4)
554 static void clear_stacktrace(oop throwable);
555 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
556 static void set_stacktrace(oop throwable, oop st_element_array);
557 static oop unassigned_stacktrace();
558
559 public:
560 // Backtrace
561 static oop backtrace(oop throwable);
562 static void set_backtrace(oop throwable, oop value);
563 static int depth(oop throwable);
564 static void set_depth(oop throwable, int value);
565 // Needed by JVMTI to filter out this internal field.
566 static int get_backtrace_offset() { return backtrace_offset;}
567 static int get_detailMessage_offset() { return detailMessage_offset;}
568 // Message
569 static oop message(oop throwable);
570 static void set_message(oop throwable, oop value);
571 static Symbol* detail_message(oop throwable);
572 static void print_stack_element(outputStream *st, Method* method, int bci);
573 static void print_stack_usage(Handle stream);
574
575 static void compute_offsets();
576 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
577
578 // Allocate space for backtrace (created but stack trace not filled in)
579 static void allocate_backtrace(Handle throwable, TRAPS);
580 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
581 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
582 // Fill in current stack trace, can cause GC
583 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
584 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
585 // Programmatic access to stack trace
586 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
587 // Printing
588 static void print(oop throwable, outputStream* st);
589 static void print_stack_trace(Handle throwable, outputStream* st);
590 static void java_printStackTrace(Handle throwable, TRAPS);
591 // Debugging
592 friend class JavaClasses;
593 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
594 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
595 };
596
597
598 // Interface to java.lang.reflect.AccessibleObject objects
599
600 class java_lang_reflect_AccessibleObject: AllStatic {
601 private:
602 // Note that to reduce dependencies on the JDK we compute these
603 // offsets at run-time.
604 static int override_offset;
605
606 static void compute_offsets();
607
608 public:
609 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
610
611 // Accessors
612 static jboolean override(oop reflect);
613 static void set_override(oop reflect, jboolean value);
614
615 // Debugging
616 friend class JavaClasses;
617 };
618
619
620 // Interface to java.lang.reflect.Method objects
621
622 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
623 private:
624 // Note that to reduce dependencies on the JDK we compute these
625 // offsets at run-time.
626 static int clazz_offset;
627 static int name_offset;
628 static int returnType_offset;
629 static int parameterTypes_offset;
630 static int exceptionTypes_offset;
631 static int slot_offset;
632 static int modifiers_offset;
633 static int signature_offset;
634 static int annotations_offset;
635 static int parameter_annotations_offset;
636 static int annotation_default_offset;
637
638 static void compute_offsets();
639 public:
640 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
641
642 // Allocation
643 static Handle create(TRAPS);
644
645 // Accessors
646 static oop clazz(oop reflect);
647 static void set_clazz(oop reflect, oop value);
648
649 static void set_name(oop method, oop value);
650
651 static oop return_type(oop method);
652 static void set_return_type(oop method, oop value);
653
654 static oop parameter_types(oop method);
655 static void set_parameter_types(oop method, oop value);
656
657 static int slot(oop reflect);
658 static void set_slot(oop reflect, int value);
659
660 static void set_exception_types(oop method, oop value);
661 static void set_modifiers(oop method, int value);
662 static void set_signature(oop method, oop value);
663 static void set_annotations(oop method, oop value);
664 static void set_parameter_annotations(oop method, oop value);
665 static void set_annotation_default(oop method, oop value);
666
667 // Debugging
668 friend class JavaClasses;
669 };
670
671
672 // Interface to java.lang.reflect.Constructor objects
673
674 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
675 private:
676 // Note that to reduce dependencies on the JDK we compute these
677 // offsets at run-time.
678 static int clazz_offset;
679 static int parameterTypes_offset;
680 static int exceptionTypes_offset;
681 static int slot_offset;
682 static int modifiers_offset;
683 static int signature_offset;
684 static int annotations_offset;
685 static int parameter_annotations_offset;
686
687 static void compute_offsets();
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 int slot(oop reflect);
702 static void set_slot(oop reflect, int value);
703
704 static void set_exception_types(oop constructor, oop value);
705 static void set_modifiers(oop constructor, int value);
706 static void set_signature(oop constructor, oop value);
707 static void set_annotations(oop constructor, oop value);
708 static void set_parameter_annotations(oop method, oop value);
709
710 // Debugging
711 friend class JavaClasses;
712 };
713
714
715 // Interface to java.lang.reflect.Field objects
716
717 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
718 private:
719 // Note that to reduce dependencies on the JDK we compute these
720 // offsets at run-time.
721 static int clazz_offset;
722 static int name_offset;
723 static int type_offset;
724 static int slot_offset;
725 static int modifiers_offset;
726 static int signature_offset;
727 static int annotations_offset;
728
729 static void compute_offsets();
730
731 public:
732 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
733
734 // Allocation
735 static Handle create(TRAPS);
736
737 // Accessors
738 static oop clazz(oop reflect);
739 static void set_clazz(oop reflect, oop value);
740
741 static oop name(oop field);
742 static void set_name(oop field, oop value);
743
744 static oop type(oop field);
745 static void set_type(oop field, oop value);
746
747 static int slot(oop reflect);
748 static void set_slot(oop reflect, int value);
749
750 static int modifiers(oop field);
751 static void set_modifiers(oop field, int value);
752
753 static void set_signature(oop constructor, oop value);
754 static void set_annotations(oop constructor, oop value);
755 static void set_parameter_annotations(oop method, oop value);
756 static void set_annotation_default(oop method, oop value);
757
758 // Debugging
759 friend class JavaClasses;
760 };
761
762 class java_lang_reflect_Parameter {
763 private:
764 // Note that to reduce dependencies on the JDK we compute these
765 // offsets at run-time.
766 static int name_offset;
767 static int modifiers_offset;
768 static int index_offset;
769 static int executable_offset;
770
771 static void compute_offsets();
772
773 public:
774 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
775
776 // Allocation
777 static Handle create(TRAPS);
778
779 // Accessors
780 static oop name(oop field);
781 static void set_name(oop field, oop value);
782
783 static int index(oop reflect);
784 static void set_index(oop reflect, int value);
785
786 static int modifiers(oop reflect);
787 static void set_modifiers(oop reflect, int value);
788
789 static oop executable(oop constructor);
790 static void set_executable(oop constructor, oop value);
791
792 friend class JavaClasses;
793 };
794
795 #define MODULE_INJECTED_FIELDS(macro) \
796 macro(java_lang_Module, module_entry, intptr_signature, false)
797
798 class java_lang_Module {
799 private:
800 static int loader_offset;
801 static int name_offset;
802 static int _module_entry_offset;
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(Handle loader, Handle module_name, TRAPS);
810
811 // Testers
812 static bool is_instance(oop obj);
813
814 // Accessors
815 static oop loader(oop module);
816 static void set_loader(oop module, oop value);
817
818 static oop name(oop module);
819 static void set_name(oop module, oop value);
820
821 static ModuleEntry* module_entry(oop module);
822 static void set_module_entry(oop module, ModuleEntry* module_entry);
823
824 friend class JavaClasses;
825 };
826
827 // Interface to jdk.internal.reflect.ConstantPool objects
828 class reflect_ConstantPool {
829 private:
830 // Note that to reduce dependencies on the JDK we compute these
831 // offsets at run-time.
832 static int _oop_offset;
833
834 static void compute_offsets();
835
836 public:
837 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
838
839 // Allocation
840 static Handle create(TRAPS);
841
842 // Accessors
843 static void set_cp(oop reflect, ConstantPool* value);
844 static int oop_offset() {
845 return _oop_offset;
846 }
847
848 static ConstantPool* get_cp(oop reflect);
849
850 // Debugging
851 friend class JavaClasses;
852 };
853
854 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
855 class reflect_UnsafeStaticFieldAccessorImpl {
856 private:
857 static int _base_offset;
858 static void compute_offsets();
859
860 public:
861 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
862
863 static int base_offset() {
864 return _base_offset;
865 }
866
867 // Debugging
868 friend class JavaClasses;
869 };
870
871 // Interface to java.lang primitive type boxing objects:
872 // - java.lang.Boolean
873 // - java.lang.Character
874 // - java.lang.Float
875 // - java.lang.Double
876 // - java.lang.Byte
877 // - java.lang.Short
878 // - java.lang.Integer
879 // - java.lang.Long
880
881 // This could be separated out into 8 individual classes.
882
883 class java_lang_boxing_object: AllStatic {
884 private:
885 enum {
886 hc_value_offset = 0
887 };
888 static int value_offset;
889 static int long_value_offset;
890
891 static oop initialize_and_allocate(BasicType type, TRAPS);
892 public:
893 // Allocation. Returns a boxed value, or NULL for invalid type.
894 static oop create(BasicType type, jvalue* value, TRAPS);
895 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
896 static BasicType get_value(oop box, jvalue* value);
897 static BasicType set_value(oop box, jvalue* value);
898 static BasicType basic_type(oop box);
899 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
900 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
901 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
902 static void print(BasicType type, jvalue* value, outputStream* st);
903
904 static int value_offset_in_bytes(BasicType type) {
905 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
906 value_offset;
907 }
908
909 // Debugging
910 friend class JavaClasses;
911 };
912
913
914
915 // Interface to java.lang.ref.Reference objects
916
917 class java_lang_ref_Reference: AllStatic {
918 public:
919 enum {
920 hc_referent_offset = 0,
921 hc_queue_offset = 1,
922 hc_next_offset = 2,
923 hc_discovered_offset = 3 // Is not last, see SoftRefs.
924 };
925
926 static int referent_offset;
927 static int queue_offset;
928 static int next_offset;
929 static int discovered_offset;
930
931 // Accessors
932 static inline oop referent(oop ref);
933 static inline void set_referent(oop ref, oop value);
934 static inline void set_referent_raw(oop ref, oop value);
935 static inline HeapWord* referent_addr_raw(oop ref);
936 static inline oop next(oop ref);
937 static inline void set_next(oop ref, oop value);
938 static inline void set_next_raw(oop ref, oop value);
939 static inline HeapWord* next_addr_raw(oop ref);
940 static inline oop discovered(oop ref);
941 static inline void set_discovered(oop ref, oop value);
942 static inline void set_discovered_raw(oop ref, oop value);
943 static inline HeapWord* discovered_addr_raw(oop ref);
944 static inline oop queue(oop ref);
945 static inline void set_queue(oop ref, oop value);
946 static bool is_referent_field(oop obj, ptrdiff_t offset);
947 static inline bool is_final(oop ref);
948 static inline bool is_phantom(oop ref);
949 };
950
951
952 // Interface to java.lang.ref.SoftReference objects
953
954 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
955 public:
956 static int timestamp_offset;
957 static int static_clock_offset;
958
959 // Accessors
960 static jlong timestamp(oop ref);
961
962 // Accessors for statics
963 static jlong clock();
964 static void set_clock(jlong value);
965
966 static void compute_offsets();
967 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
968 };
969
970 // Interface to java.lang.invoke.MethodHandle objects
971
972 class MethodHandleEntry;
973
974 class java_lang_invoke_MethodHandle: AllStatic {
975 friend class JavaClasses;
976
977 private:
978 static int _type_offset; // the MethodType of this MH
979 static int _form_offset; // the LambdaForm of this MH
980
981 static void compute_offsets();
982
983 public:
984 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
985
986 // Accessors
987 static oop type(oop mh);
988 static void set_type(oop mh, oop mtype);
989
990 static oop form(oop mh);
991 static void set_form(oop mh, oop lform);
992
993 // Testers
994 static bool is_subclass(Klass* klass) {
995 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
996 }
997 static bool is_instance(oop obj);
998
999 // Accessors for code generation:
1000 static int type_offset_in_bytes() { return _type_offset; }
1001 static int form_offset_in_bytes() { return _form_offset; }
1002 };
1003
1004 // Interface to java.lang.invoke.DirectMethodHandle objects
1005
1006 class java_lang_invoke_DirectMethodHandle: AllStatic {
1007 friend class JavaClasses;
1008
1009 private:
1010 static int _member_offset; // the MemberName of this DMH
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 member(oop mh);
1019
1020 // Testers
1021 static bool is_subclass(Klass* klass) {
1022 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1023 }
1024 static bool is_instance(oop obj);
1025
1026 // Accessors for code generation:
1027 static int member_offset_in_bytes() { return _member_offset; }
1028 };
1029
1030 // Interface to java.lang.invoke.LambdaForm objects
1031 // (These are a private interface for managing adapter code generation.)
1032
1033 class java_lang_invoke_LambdaForm: AllStatic {
1034 friend class JavaClasses;
1035
1036 private:
1037 static int _vmentry_offset; // type is MemberName
1038
1039 static void compute_offsets();
1040
1041 public:
1042 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1043
1044 // Accessors
1045 static oop vmentry(oop lform);
1046 static void set_vmentry(oop lform, oop invoker);
1047
1048 // Testers
1049 static bool is_subclass(Klass* klass) {
1050 return SystemDictionary::LambdaForm_klass() != NULL &&
1051 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1052 }
1053 static bool is_instance(oop obj);
1054
1055 // Accessors for code generation:
1056 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1057 };
1058
1059
1060 // Interface to java.lang.invoke.MemberName objects
1061 // (These are a private interface for Java code to query the class hierarchy.)
1062
1063 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1064 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1065 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1066
1067 class java_lang_invoke_ResolvedMethodName : AllStatic {
1068 friend class JavaClasses;
1069
1070 static int _vmtarget_offset;
1071 static int _vmholder_offset;
1072
1073 static void compute_offsets();
1074 public:
1075 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1076
1077 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1078
1079 static Method* vmtarget(oop resolved_method);
1080 static void set_vmtarget(oop resolved_method, Method* method);
1081
1082 static void set_vmholder(oop resolved_method, oop holder);
1083
1084 // find or create resolved member name
1085 static oop find_resolved_method(const methodHandle& m, TRAPS);
1086
1087 static bool is_instance(oop resolved_method);
1088 };
1089
1090
1091 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1092 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1093
1094
1095 class java_lang_invoke_MemberName: AllStatic {
1096 friend class JavaClasses;
1097
1098 private:
1099 // From java.lang.invoke.MemberName:
1100 // private Class<?> clazz; // class in which the method is defined
1101 // private String name; // may be null if not yet materialized
1102 // private Object type; // may be null if not yet materialized
1103 // private int flags; // modifier bits; see reflect.Modifier
1104 // private ResolvedMethodName method; // holds VM-specific target value
1105 // private intptr_t vmindex; // member index within class or interface
1106 static int _clazz_offset;
1107 static int _name_offset;
1108 static int _type_offset;
1109 static int _flags_offset;
1110 static int _method_offset;
1111 static int _vmindex_offset;
1112
1113 static void compute_offsets();
1114
1115 public:
1116 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1117 // Accessors
1118 static oop clazz(oop mname);
1119 static void set_clazz(oop mname, oop clazz);
1120
1121 static oop type(oop mname);
1122 static void set_type(oop mname, oop type);
1123
1124 static oop name(oop mname);
1125 static void set_name(oop mname, oop name);
1126
1127 static int flags(oop mname);
1128 static void set_flags(oop mname, int flags);
1129
1130 // Link through ResolvedMethodName field to get Method*
1131 static Method* vmtarget(oop mname);
1132 static void set_method(oop mname, oop method);
1133
1134 static intptr_t vmindex(oop mname);
1135 static void set_vmindex(oop mname, intptr_t index);
1136
1137 // Testers
1138 static bool is_subclass(Klass* klass) {
1139 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1140 }
1141 static bool is_instance(oop obj);
1142
1143 static bool is_method(oop obj);
1144
1145 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1146 enum {
1147 MN_IS_METHOD = 0x00010000, // method (not constructor)
1148 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1149 MN_IS_FIELD = 0x00040000, // field
1150 MN_IS_TYPE = 0x00080000, // nested type
1151 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1152 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1153 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1154 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1155 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1156 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1157 };
1158
1159 // Accessors for code generation:
1160 static int clazz_offset_in_bytes() { return _clazz_offset; }
1161 static int type_offset_in_bytes() { return _type_offset; }
1162 static int name_offset_in_bytes() { return _name_offset; }
1163 static int flags_offset_in_bytes() { return _flags_offset; }
1164 static int method_offset_in_bytes() { return _method_offset; }
1165 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1166 };
1167
1168
1169 // Interface to java.lang.invoke.MethodType objects
1170
1171 class java_lang_invoke_MethodType: AllStatic {
1172 friend class JavaClasses;
1173
1174 private:
1175 static int _rtype_offset;
1176 static int _ptypes_offset;
1177
1178 static void compute_offsets();
1179
1180 public:
1181 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1182 // Accessors
1183 static oop rtype(oop mt);
1184 static objArrayOop ptypes(oop mt);
1185
1186 static oop ptype(oop mt, int index);
1187 static int ptype_count(oop mt);
1188
1189 static int ptype_slot_count(oop mt); // extra counts for long/double
1190 static int rtype_slot_count(oop mt); // extra counts for long/double
1191
1192 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1193 static void print_signature(oop mt, outputStream* st);
1194
1195 static bool is_instance(oop obj);
1196
1197 static bool equals(oop mt1, oop mt2);
1198
1199 // Accessors for code generation:
1200 static int rtype_offset_in_bytes() { return _rtype_offset; }
1201 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1202 };
1203
1204
1205 // Interface to java.lang.invoke.CallSite objects
1206
1207 class java_lang_invoke_CallSite: AllStatic {
1208 friend class JavaClasses;
1209
1210 private:
1211 static int _target_offset;
1212 static int _context_offset;
1213
1214 static void compute_offsets();
1215
1216 public:
1217 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1218 // Accessors
1219 static oop target( oop site);
1220 static void set_target( oop site, oop target);
1221 static void set_target_volatile( oop site, oop target);
1222
1223 static oop context_no_keepalive(oop site);
1224
1225 // Testers
1226 static bool is_subclass(Klass* klass) {
1227 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1228 }
1229 static bool is_instance(oop obj);
1230
1231 // Accessors for code generation:
1232 static int target_offset_in_bytes() { return _target_offset; }
1233 };
1234
1235 // Interface to java.lang.invoke.ConstantCallSite objects
1236
1237 class java_lang_invoke_ConstantCallSite: AllStatic {
1238 friend class JavaClasses;
1239
1240 private:
1241 static int _is_frozen_offset;
1242
1243 static void compute_offsets();
1244
1245 public:
1246 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1247 // Accessors
1248 static jboolean is_frozen(oop site);
1249
1250 // Testers
1251 static bool is_subclass(Klass* klass) {
1252 return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1253 }
1254 static bool is_instance(oop obj);
1255 };
1256
1257 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1258
1259 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1260 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1261 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1262
1263 class DependencyContext;
1264
1265 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1266 friend class JavaClasses;
1267
1268 private:
1269 static int _vmdependencies_offset;
1270 static int _last_cleanup_offset;
1271
1272 static void compute_offsets();
1273
1274 public:
1275 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1276 // Accessors
1277 static DependencyContext vmdependencies(oop context);
1278
1279 // Testers
1280 static bool is_subclass(Klass* klass) {
1281 return klass->is_subclass_of(SystemDictionary::Context_klass());
1282 }
1283 static bool is_instance(oop obj);
1284 };
1285
1286 // Interface to java.security.AccessControlContext objects
1287
1288 class java_security_AccessControlContext: AllStatic {
1289 private:
1290 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1291 // so we compute the offsets at startup rather than hard-wiring them.
1292 static int _context_offset;
1293 static int _privilegedContext_offset;
1294 static int _isPrivileged_offset;
1295 static int _isAuthorized_offset;
1296
1297 static void compute_offsets();
1298 public:
1299 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1300 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1301
1302 // Debugging/initialization
1303 friend class JavaClasses;
1304 };
1305
1306
1307 // Interface to java.lang.ClassLoader objects
1308
1309 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1310 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1311
1312 class java_lang_ClassLoader : AllStatic {
1313 private:
1314 static int _loader_data_offset;
1315 static bool offsets_computed;
1316 static int parent_offset;
1317 static int parallelCapable_offset;
1318 static int name_offset;
1319 static int nameAndId_offset;
1320 static int unnamedModule_offset;
1321
1322 public:
1323 static void compute_offsets();
1324 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1325
1326 static ClassLoaderData* loader_data_acquire(oop loader);
1327 static ClassLoaderData* loader_data_raw(oop loader);
1328 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1329
1330 static oop parent(oop loader);
1331 static oop name(oop loader);
1332 static oop nameAndId(oop loader);
1333 static bool isAncestor(oop loader, oop cl);
1334
1335 // Support for parallelCapable field
1336 static bool parallelCapable(oop the_class_mirror);
1337
1338 static bool is_trusted_loader(oop loader);
1339
1340 // Return true if this is one of the class loaders associated with
1341 // the generated bytecodes for reflection.
1342 static bool is_reflection_class_loader(oop loader);
1343
1344 // Fix for 4474172
1345 static oop non_reflection_class_loader(oop loader);
1346
1347 // Testers
1348 static bool is_subclass(Klass* klass) {
1349 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1350 }
1351 static bool is_instance(oop obj);
1352
1353 static oop unnamedModule(oop loader);
1354
1355 // Debugging
1356 friend class JavaClasses;
1357 friend class ClassFileParser; // access to number_of_fake_fields
1358 };
1359
1360
1361 // Interface to java.lang.System objects
1362
1363 class java_lang_System : AllStatic {
1364 private:
1365 static int static_in_offset;
1366 static int static_out_offset;
1367 static int static_err_offset;
1368 static int static_security_offset;
1369
1370 public:
1371 static int in_offset_in_bytes();
1372 static int out_offset_in_bytes();
1373 static int err_offset_in_bytes();
1374
1375 static void compute_offsets();
1376 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1377
1378 // Debugging
1379 friend class JavaClasses;
1380 };
1381
1382
1383 // Interface to java.lang.StackTraceElement objects
1384
1385 class java_lang_StackTraceElement: AllStatic {
1386 private:
1387 static int declaringClassObject_offset;
1388 static int classLoaderName_offset;
1389 static int moduleName_offset;
1390 static int moduleVersion_offset;
1391 static int declaringClass_offset;
1392 static int methodName_offset;
1393 static int fileName_offset;
1394 static int lineNumber_offset;
1395
1396 // Setters
1397 static void set_classLoaderName(oop element, oop value);
1398 static void set_moduleName(oop element, oop value);
1399 static void set_moduleVersion(oop element, oop value);
1400 static void set_declaringClass(oop element, oop value);
1401 static void set_methodName(oop element, oop value);
1402 static void set_fileName(oop element, oop value);
1403 static void set_lineNumber(oop element, int value);
1404 static void set_declaringClassObject(oop element, oop value);
1405
1406 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1407 const methodHandle& method, int bci,
1408 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1409
1410 public:
1411 // Create an instance of StackTraceElement
1412 static oop create(const methodHandle& method, int bci, TRAPS);
1413
1414 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1415 int version, int bci, Symbol* name, TRAPS);
1416
1417 static void compute_offsets();
1418 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1419
1420 #if INCLUDE_JVMCI
1421 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1422 #endif
1423
1424 // Debugging
1425 friend class JavaClasses;
1426 };
1427
1428
1429 class Backtrace: AllStatic {
1430 public:
1431 // Helper backtrace functions to store bci|version together.
1432 static int merge_bci_and_version(int bci, int version);
1433 static int merge_mid_and_cpref(int mid, int cpref);
1434 static int bci_at(unsigned int merged);
1435 static int version_at(unsigned int merged);
1436 static int mid_at(unsigned int merged);
1437 static int cpref_at(unsigned int merged);
1438 static int get_line_number(Method* method, int bci);
1439 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1440
1441 // Debugging
1442 friend class JavaClasses;
1443 };
1444
1445 // Interface to java.lang.StackFrameInfo objects
1446
1447 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1448 macro(java_lang_StackFrameInfo, version, short_signature, false)
1449
1450 class java_lang_StackFrameInfo: AllStatic {
1451 private:
1452 static int _memberName_offset;
1453 static int _bci_offset;
1454 static int _version_offset;
1455
1456 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1457
1458 public:
1459 // Setters
1460 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1461 static void set_bci(oop info, int value);
1462
1463 static void set_version(oop info, short value);
1464
1465 static void compute_offsets();
1466 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1467
1468 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1469
1470 // Debugging
1471 friend class JavaClasses;
1472 };
1473
1474 class java_lang_LiveStackFrameInfo: AllStatic {
1475 private:
1476 static int _monitors_offset;
1477 static int _locals_offset;
1478 static int _operands_offset;
1479 static int _mode_offset;
1480
1481 public:
1482 static void set_monitors(oop info, oop value);
1483 static void set_locals(oop info, oop value);
1484 static void set_operands(oop info, oop value);
1485 static void set_mode(oop info, int value);
1486
1487 static void compute_offsets();
1488 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1489
1490 // Debugging
1491 friend class JavaClasses;
1492 };
1493
1494 // Interface to java.lang.reflect.RecordComponent objects
1495
1496 class java_lang_reflect_RecordComponent: AllStatic {
1497 private:
1498 static int clazz_offset;
1499 static int name_offset;
1500 static int type_offset;
1501 static int accessor_offset;
1502 static int signature_offset;
1503 static int annotations_offset;
1504 static int typeAnnotations_offset;
1505
1506 // Setters
1507 static void set_clazz(oop element, oop value);
1508 static void set_name(oop element, oop value);
1509 static void set_type(oop element, oop value);
1510 static void set_accessor(oop element, oop value);
1511 static void set_signature(oop element, oop value);
1512 static void set_annotations(oop element, oop value);
1513 static void set_typeAnnotations(oop element, oop value);
1514
1515 public:
1516 // Create an instance of RecordComponent
1517 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1518
1519 static void compute_offsets();
1520 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1521
1522 // Debugging
1523 friend class JavaClasses;
1524 };
1525
1526
1527 // Interface to java.lang.AssertionStatusDirectives objects
1528
1529 class java_lang_AssertionStatusDirectives: AllStatic {
1530 private:
1531 static int classes_offset;
1532 static int classEnabled_offset;
1533 static int packages_offset;
1534 static int packageEnabled_offset;
1535 static int deflt_offset;
1536
1537 public:
1538 // Setters
1539 static void set_classes(oop obj, oop val);
1540 static void set_classEnabled(oop obj, oop val);
1541 static void set_packages(oop obj, oop val);
1542 static void set_packageEnabled(oop obj, oop val);
1543 static void set_deflt(oop obj, bool val);
1544
1545 static void compute_offsets();
1546 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1547
1548 // Debugging
1549 friend class JavaClasses;
1550 };
1551
1552
1553 class java_nio_Buffer: AllStatic {
1554 private:
1555 static int _limit_offset;
1556
1557 public:
1558 static int limit_offset();
1559 static void compute_offsets();
1560 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1561 };
1562
1563 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1564 private:
1565 static int _owner_offset;
1566 public:
1567 static void compute_offsets();
1568 static oop get_owner_threadObj(oop obj);
1569 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1570 };
1571
1572 // Interface to jdk.internal.misc.UnsafeConsants
1573
1574 class jdk_internal_misc_UnsafeConstants : AllStatic {
1575 public:
1576 static void set_unsafe_constants();
1577 static void compute_offsets() { }
1578 static void serialize_offsets(SerializeClosure* f) { }
1579 };
1580
1581 class java_lang_Integer : AllStatic {
1582 public:
1583 static jint value(oop obj);
1584 };
1585
1586 class java_lang_Long : AllStatic {
1587 public:
1588 static jlong value(oop obj);
1589 };
1590
1591 class java_lang_Character : AllStatic {
1592 public:
1593 static jchar value(oop obj);
1594 };
1595
1596 class java_lang_Short : AllStatic {
1597 public:
1598 static jshort value(oop obj);
1599 };
1600
1601 class java_lang_Byte : AllStatic {
1602 public:
1603 static jbyte value(oop obj);
1604 };
1605
1606 class java_lang_Boolean : AllStatic {
1607 private:
1608 static int _static_TRUE_offset;
1609 static int _static_FALSE_offset;
1610 public:
1611 static Symbol* symbol();
1612 static void compute_offsets(InstanceKlass* k);
1613 static oop get_TRUE(InstanceKlass *k);
1614 static oop get_FALSE(InstanceKlass *k);
1615 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1616 static jboolean value(oop obj);
1617 };
1618
1619 class java_lang_Integer_IntegerCache : AllStatic {
1620 private:
1621 static int _static_cache_offset;
1622 public:
1623 static Symbol* symbol();
1624 static void compute_offsets(InstanceKlass* k);
1625 static objArrayOop cache(InstanceKlass *k);
1626 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1627 };
1628
1629 class java_lang_Long_LongCache : AllStatic {
1630 private:
1631 static int _static_cache_offset;
1632 public:
1633 static Symbol* symbol();
1634 static void compute_offsets(InstanceKlass* k);
1635 static objArrayOop cache(InstanceKlass *k);
1636 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1637 };
1638
1639 class java_lang_Character_CharacterCache : AllStatic {
1640 private:
1641 static int _static_cache_offset;
1642 public:
1643 static Symbol* symbol();
1644 static void compute_offsets(InstanceKlass* k);
1645 static objArrayOop cache(InstanceKlass *k);
1646 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1647 };
1648
1649 class java_lang_Short_ShortCache : AllStatic {
1650 private:
1651 static int _static_cache_offset;
1652 public:
1653 static Symbol* symbol();
1654 static void compute_offsets(InstanceKlass* k);
1655 static objArrayOop cache(InstanceKlass *k);
1656 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1657 };
1658
1659 class java_lang_Byte_ByteCache : AllStatic {
1660 private:
1661 static int _static_cache_offset;
1662 public:
1663 static Symbol* symbol();
1664 static void compute_offsets(InstanceKlass* k);
1665 static objArrayOop cache(InstanceKlass *k);
1666 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1667 };
1668
1669 // Use to declare fields that need to be injected into Java classes
1670 // for the JVM to use. The name_index and signature_index are
1671 // declared in vmSymbols. The may_be_java flag is used to declare
1672 // fields that might already exist in Java but should be injected if
1673 // they don't. Otherwise the field is unconditionally injected and
1674 // the JVM uses the injected one. This is to ensure that name
1675 // collisions don't occur. In general may_be_java should be false
1676 // unless there's a good reason.
1677
1678 class InjectedField {
1679 public:
1680 const SystemDictionary::WKID klass_id;
1681 const vmSymbols::SID name_index;
1682 const vmSymbols::SID signature_index;
1683 const bool may_be_java;
1684
1685
1686 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1687 Symbol* name() const { return lookup_symbol(name_index); }
1688 Symbol* signature() const { return lookup_symbol(signature_index); }
1689
1690 int compute_offset();
1691
1692 // Find the Symbol for this index
1693 static Symbol* lookup_symbol(int symbol_index) {
1694 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1695 }
1696 };
1697
1698 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1699 klass##_##name##_enum,
1700
1701 #define ALL_INJECTED_FIELDS(macro) \
1702 CLASS_INJECTED_FIELDS(macro) \
1703 CLASSLOADER_INJECTED_FIELDS(macro) \
1704 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1705 MEMBERNAME_INJECTED_FIELDS(macro) \
1706 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1707 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1708 MODULE_INJECTED_FIELDS(macro)
1709
1710 // Interface to hard-coded offset checking
1711
1712 class JavaClasses : AllStatic {
1713 private:
1714
1715 static InjectedField _injected_fields[];
1716
1717 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1718 public:
1719 enum InjectedFieldID {
1720 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1721 MAX_enum
1722 };
1723
1724 static int compute_injected_offset(InjectedFieldID id);
1725
1726 static void compute_hard_coded_offsets();
1727 static void compute_offsets();
1728 static void check_offsets() PRODUCT_RETURN;
1729 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1730 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1731 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1732 };
1733
1734 #undef DECLARE_INJECTED_FIELD_ENUM
1735
1736 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP