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, char* buf, int buflen);
172 static char* as_utf8_string(oop java_string, int start, int len);
173 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
174 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
175 static char* as_platform_dependent_str(Handle java_string, TRAPS);
176 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
177 // produce an ascii string with all other values quoted using \u####
178 static char* as_quoted_ascii(oop java_string);
179
180 // Compute the hash value for a java.lang.String object which would
181 // contain the characters passed in.
182 //
183 // As the hash value used by the String object itself, in
184 // String.hashCode(). This value is normally calculated in Java code
185 // in the String.hashCode method(), but is precomputed for String
186 // objects in the shared archive file.
187 // hash P(31) from Kernighan & Ritchie
188 //
189 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
190 static unsigned int hash_code(const jchar* s, int len) {
191 unsigned int h = 0;
192 while (len-- > 0) {
193 h = 31*h + (unsigned int) *s;
194 s++;
195 }
196 return h;
197 }
198
199 static unsigned int hash_code(const jbyte* s, int len) {
200 unsigned int h = 0;
201 while (len-- > 0) {
202 h = 31*h + (((unsigned int) *s) & 0xFF);
203 s++;
204 }
205 return h;
206 }
207
208 static unsigned int hash_code(oop java_string);
209
210 static bool equals(oop java_string, const jchar* chars, int len);
211 static bool equals(oop str1, oop str2);
212 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
213
214 // Conversion between '.' and '/' formats
215 static Handle externalize_classname(Handle java_string, TRAPS) {
216 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
217 }
218
219 // Conversion
220 static Symbol* as_symbol(oop java_string);
221 static Symbol* as_symbol_or_null(oop java_string);
222
223 // Testers
224 static bool is_instance(oop obj);
225 static inline bool is_instance_inlined(oop obj);
226
227 // Debugging
228 static void print(oop java_string, outputStream* st);
229 friend class JavaClasses;
230 friend class StringTable;
231 };
232
233
234 // Interface to java.lang.Class objects
235
236 #define CLASS_INJECTED_FIELDS(macro) \
237 macro(java_lang_Class, klass, intptr_signature, false) \
238 macro(java_lang_Class, array_klass, intptr_signature, false) \
239 macro(java_lang_Class, oop_size, int_signature, false) \
240 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
241 macro(java_lang_Class, protection_domain, object_signature, false) \
242 macro(java_lang_Class, signers, object_signature, false) \
243 macro(java_lang_Class, source_file, object_signature, false) \
244
245 class java_lang_Class : AllStatic {
246 friend class VMStructs;
247 friend class JVMCIVMStructs;
248
249 private:
250 // The fake offsets are added by the class loader when java.lang.Class is loaded
251
252 static int _klass_offset;
253 static int _array_klass_offset;
254
255 static int _oop_size_offset;
256 static int _static_oop_field_count_offset;
257
258 static int _protection_domain_offset;
259 static int _init_lock_offset;
260 static int _signers_offset;
261 static int _class_loader_offset;
262 static int _module_offset;
263 static int _component_mirror_offset;
264 static int _name_offset;
265 static int _source_file_offset;
266
267 static bool offsets_computed;
268 static int classRedefinedCount_offset;
269
270 static GrowableArray<Klass*>* _fixup_mirror_list;
271 static GrowableArray<Klass*>* _fixup_module_field_list;
272
273 static void set_init_lock(oop java_class, oop init_lock);
274 static void set_protection_domain(oop java_class, oop protection_domain);
275 static void set_class_loader(oop java_class, oop class_loader);
276 static void set_component_mirror(oop java_class, oop comp_mirror);
277 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
278 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
279 public:
280 static void allocate_fixup_lists();
281 static void compute_offsets();
282
283 // Instance creation
284 static void create_mirror(Klass* k, Handle class_loader, Handle module,
285 Handle protection_domain, TRAPS);
286 static void fixup_mirror(Klass* k, TRAPS);
287 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
288 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
289 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
290
291 // Archiving
292 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
293 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
294 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
295 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
296 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
297 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
298 Handle protection_domain,
299 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
300
301 static void fixup_module_field(Klass* k, Handle module);
302
303 // Conversion
304 static Klass* as_Klass(oop java_class);
305 static Klass* as_Klass_raw(oop java_class);
306 static void set_klass(oop java_class, Klass* klass);
307 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
308 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
309 static void print_signature(oop java_class, outputStream *st);
310 static const char* as_external_name(oop java_class);
311 // Testing
312 static bool is_instance(oop obj);
313
314 static bool is_primitive(oop java_class);
315 static BasicType primitive_type(oop java_class);
316 static oop primitive_mirror(BasicType t);
317 // JVM_NewArray support
318 static Klass* array_klass_acquire(oop java_class);
319 static void release_set_array_klass(oop java_class, Klass* klass);
320 // compiler support for class operations
321 static int klass_offset_in_bytes() { return _klass_offset; }
322 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
323 // Support for classRedefinedCount field
324 static int classRedefinedCount(oop the_class_mirror);
325 static void set_classRedefinedCount(oop the_class_mirror, int value);
326
327 // Support for embedded per-class oops
328 static oop protection_domain(oop java_class);
329 static oop init_lock(oop java_class);
330 #if INCLUDE_TSAN
331 static oop* init_lock_addr(oop java_class);
332 static const int* init_lock_offset_addr() { return &_init_lock_offset; }
333 #endif // INCLUDE_TSAN
334 static oop component_mirror(oop java_class);
335 static objArrayOop signers(oop java_class);
336 static void set_signers(oop java_class, objArrayOop signers);
337
338 static oop class_loader(oop java_class);
339 static void set_module(oop java_class, oop module);
340 static oop module(oop java_class);
341
342 static oop name(Handle java_class, TRAPS);
343
344 static oop source_file(oop java_class);
345 static void set_source_file(oop java_class, oop source_file);
346
347 static int oop_size(oop java_class);
348 static int oop_size_raw(oop java_class);
349 static void set_oop_size(HeapWord* java_class, int size);
350 static int static_oop_field_count(oop java_class);
351 static int static_oop_field_count_raw(oop java_class);
352 static void set_static_oop_field_count(oop java_class, int size);
353
354 static GrowableArray<Klass*>* fixup_mirror_list() {
355 return _fixup_mirror_list;
356 }
357 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
358 _fixup_mirror_list = v;
359 }
360
361 static GrowableArray<Klass*>* fixup_module_field_list() {
362 return _fixup_module_field_list;
363 }
364 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
365 _fixup_module_field_list = v;
366 }
367
368 // Debugging
369 friend class JavaClasses;
370 friend class InstanceKlass; // verification code accesses offsets
371 friend class ClassFileParser; // access to number_of_fake_fields
372 };
373
374 // Interface to java.lang.Thread objects
375
376 class java_lang_Thread : AllStatic {
377 private:
378 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
379 // so we compute the offsets at startup rather than hard-wiring them.
380 static int _name_offset;
381 static int _group_offset;
382 static int _contextClassLoader_offset;
383 static int _inheritedAccessControlContext_offset;
384 static int _priority_offset;
385 static int _eetop_offset;
386 static int _interrupted_offset;
387 static int _daemon_offset;
388 static int _stillborn_offset;
389 static int _stackSize_offset;
390 static int _tid_offset;
391 static int _thread_status_offset;
392 static int _park_blocker_offset;
393
394 static void compute_offsets();
395
396 public:
397 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
398
399 // Instance creation
400 static oop create();
401 // Returns the JavaThread associated with the thread obj
402 static JavaThread* thread(oop java_thread);
403 // Set JavaThread for instance
404 static void set_thread(oop java_thread, JavaThread* thread);
405 // Interrupted status
406 static bool interrupted(oop java_thread);
407 static void set_interrupted(oop java_thread, bool val);
408 // Name
409 static oop name(oop java_thread);
410 static void set_name(oop java_thread, oop name);
411 // Priority
412 static ThreadPriority priority(oop java_thread);
413 static void set_priority(oop java_thread, ThreadPriority priority);
414 // Thread group
415 static oop threadGroup(oop java_thread);
416 // Stillborn
417 static bool is_stillborn(oop java_thread);
418 static void set_stillborn(oop java_thread);
419 // Alive (NOTE: this is not really a field, but provides the correct
420 // definition without doing a Java call)
421 static bool is_alive(oop java_thread);
422 // Daemon
423 static bool is_daemon(oop java_thread);
424 static void set_daemon(oop java_thread);
425 // Context ClassLoader
426 static oop context_class_loader(oop java_thread);
427 // Control context
428 static oop inherited_access_control_context(oop java_thread);
429 // Stack size hint
430 static jlong stackSize(oop java_thread);
431 // Thread ID
432 static jlong thread_id(oop java_thread);
433
434 // Blocker object responsible for thread parking
435 static oop park_blocker(oop java_thread);
436
437 // Java Thread Status for JVMTI and M&M use.
438 // This thread status info is saved in threadStatus field of
439 // java.lang.Thread java class.
440 enum ThreadStatus {
441 NEW = 0,
442 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
443 JVMTI_THREAD_STATE_RUNNABLE,
444 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
445 JVMTI_THREAD_STATE_WAITING +
446 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
447 JVMTI_THREAD_STATE_SLEEPING,
448 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
449 JVMTI_THREAD_STATE_WAITING +
450 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
451 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
452 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
453 JVMTI_THREAD_STATE_WAITING +
454 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
455 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
456 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
457 JVMTI_THREAD_STATE_WAITING +
458 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
459 JVMTI_THREAD_STATE_PARKED,
460 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
461 JVMTI_THREAD_STATE_WAITING +
462 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
463 JVMTI_THREAD_STATE_PARKED,
464 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
465 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
466 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
467 };
468 // Write thread status info to threadStatus field of java.lang.Thread.
469 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
470 // Read thread status info from threadStatus field of java.lang.Thread.
471 static ThreadStatus get_thread_status(oop java_thread_oop);
472
473 static const char* thread_status_name(oop java_thread_oop);
474
475 // Debugging
476 friend class JavaClasses;
477 };
478
479 // Interface to java.lang.ThreadGroup objects
480
481 class java_lang_ThreadGroup : AllStatic {
482 private:
483 static int _parent_offset;
484 static int _name_offset;
485 static int _threads_offset;
486 static int _groups_offset;
487 static int _maxPriority_offset;
488 static int _destroyed_offset;
489 static int _daemon_offset;
490 static int _nthreads_offset;
491 static int _ngroups_offset;
492
493 static void compute_offsets();
494
495 public:
496 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
497
498 // parent ThreadGroup
499 static oop parent(oop java_thread_group);
500 // name
501 static const char* name(oop java_thread_group);
502 // ("name as oop" accessor is not necessary)
503 // Number of threads in group
504 static int nthreads(oop java_thread_group);
505 // threads
506 static objArrayOop threads(oop java_thread_group);
507 // Number of threads in group
508 static int ngroups(oop java_thread_group);
509 // groups
510 static objArrayOop groups(oop java_thread_group);
511 // maxPriority in group
512 static ThreadPriority maxPriority(oop java_thread_group);
513 // Destroyed
514 static bool is_destroyed(oop java_thread_group);
515 // Daemon
516 static bool is_daemon(oop java_thread_group);
517 // Debugging
518 friend class JavaClasses;
519 };
520
521
522
523 // Interface to java.lang.Throwable objects
524
525 class java_lang_Throwable: AllStatic {
526 friend class BacktraceBuilder;
527 friend class BacktraceIterator;
528
529 private:
530 // Offsets
531 enum {
532 hc_backtrace_offset = 0,
533 hc_detailMessage_offset = 1,
534 hc_cause_offset = 2, // New since 1.4
535 hc_stackTrace_offset = 3 // New since 1.4
536 };
537 // Trace constants
538 enum {
539 trace_methods_offset = 0,
540 trace_bcis_offset = 1,
541 trace_mirrors_offset = 2,
542 trace_names_offset = 3,
543 trace_next_offset = 4,
544 trace_hidden_offset = 5,
545 trace_size = 6,
546 trace_chunk_size = 32
547 };
548
549 static int backtrace_offset;
550 static int detailMessage_offset;
551 static int stackTrace_offset;
552 static int depth_offset;
553 static int static_unassigned_stacktrace_offset;
554
555 // StackTrace (programmatic access, new since 1.4)
556 static void clear_stacktrace(oop throwable);
557 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
558 static void set_stacktrace(oop throwable, oop st_element_array);
559 static oop unassigned_stacktrace();
560
561 public:
562 // Backtrace
563 static oop backtrace(oop throwable);
564 static void set_backtrace(oop throwable, oop value);
565 static int depth(oop throwable);
566 static void set_depth(oop throwable, int value);
567 // Needed by JVMTI to filter out this internal field.
568 static int get_backtrace_offset() { return backtrace_offset;}
569 static int get_detailMessage_offset() { return detailMessage_offset;}
570 // Message
571 static oop message(oop throwable);
572 static void set_message(oop throwable, oop value);
573 static Symbol* detail_message(oop throwable);
574 static void print_stack_element(outputStream *st, Method* method, int bci);
575 static void print_stack_usage(Handle stream);
576
577 static void compute_offsets();
578 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
579
580 // Allocate space for backtrace (created but stack trace not filled in)
581 static void allocate_backtrace(Handle throwable, TRAPS);
582 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
583 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
584 // Fill in current stack trace, can cause GC
585 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
586 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
587 // Programmatic access to stack trace
588 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
589 // Printing
590 static void print(oop throwable, outputStream* st);
591 static void print_stack_trace(Handle throwable, outputStream* st);
592 static void java_printStackTrace(Handle throwable, TRAPS);
593 // Debugging
594 friend class JavaClasses;
595 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
596 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
597 };
598
599
600 // Interface to java.lang.reflect.AccessibleObject objects
601
602 class java_lang_reflect_AccessibleObject: AllStatic {
603 private:
604 // Note that to reduce dependencies on the JDK we compute these
605 // offsets at run-time.
606 static int override_offset;
607
608 static void compute_offsets();
609
610 public:
611 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
612
613 // Accessors
614 static jboolean override(oop reflect);
615 static void set_override(oop reflect, jboolean value);
616
617 // Debugging
618 friend class JavaClasses;
619 };
620
621
622 // Interface to java.lang.reflect.Method objects
623
624 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
625 private:
626 // Note that to reduce dependencies on the JDK we compute these
627 // offsets at run-time.
628 static int clazz_offset;
629 static int name_offset;
630 static int returnType_offset;
631 static int parameterTypes_offset;
632 static int exceptionTypes_offset;
633 static int slot_offset;
634 static int modifiers_offset;
635 static int signature_offset;
636 static int annotations_offset;
637 static int parameter_annotations_offset;
638 static int annotation_default_offset;
639
640 static void compute_offsets();
641 public:
642 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
643
644 // Allocation
645 static Handle create(TRAPS);
646
647 // Accessors
648 static oop clazz(oop reflect);
649 static void set_clazz(oop reflect, oop value);
650
651 static void set_name(oop method, oop value);
652
653 static oop return_type(oop method);
654 static void set_return_type(oop method, oop value);
655
656 static oop parameter_types(oop method);
657 static void set_parameter_types(oop method, oop value);
658
659 static int slot(oop reflect);
660 static void set_slot(oop reflect, int value);
661
662 static void set_exception_types(oop method, oop value);
663 static void set_modifiers(oop method, int value);
664 static void set_signature(oop method, oop value);
665 static void set_annotations(oop method, oop value);
666 static void set_parameter_annotations(oop method, oop value);
667 static void set_annotation_default(oop method, oop value);
668
669 // Debugging
670 friend class JavaClasses;
671 };
672
673
674 // Interface to java.lang.reflect.Constructor objects
675
676 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
677 private:
678 // Note that to reduce dependencies on the JDK we compute these
679 // offsets at run-time.
680 static int clazz_offset;
681 static int parameterTypes_offset;
682 static int exceptionTypes_offset;
683 static int slot_offset;
684 static int modifiers_offset;
685 static int signature_offset;
686 static int annotations_offset;
687 static int parameter_annotations_offset;
688
689 static void compute_offsets();
690 public:
691 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
692
693 // Allocation
694 static Handle create(TRAPS);
695
696 // Accessors
697 static oop clazz(oop reflect);
698 static void set_clazz(oop reflect, oop value);
699
700 static oop parameter_types(oop constructor);
701 static void set_parameter_types(oop constructor, oop value);
702
703 static int slot(oop reflect);
704 static void set_slot(oop reflect, int value);
705
706 static void set_exception_types(oop constructor, oop value);
707 static void set_modifiers(oop constructor, int value);
708 static void set_signature(oop constructor, oop value);
709 static void set_annotations(oop constructor, oop value);
710 static void set_parameter_annotations(oop method, oop value);
711
712 // Debugging
713 friend class JavaClasses;
714 };
715
716
717 // Interface to java.lang.reflect.Field objects
718
719 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
720 private:
721 // Note that to reduce dependencies on the JDK we compute these
722 // offsets at run-time.
723 static int clazz_offset;
724 static int name_offset;
725 static int type_offset;
726 static int slot_offset;
727 static int modifiers_offset;
728 static int signature_offset;
729 static int annotations_offset;
730
731 static void compute_offsets();
732
733 public:
734 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
735
736 // Allocation
737 static Handle create(TRAPS);
738
739 // Accessors
740 static oop clazz(oop reflect);
741 static void set_clazz(oop reflect, oop value);
742
743 static oop name(oop field);
744 static void set_name(oop field, oop value);
745
746 static oop type(oop field);
747 static void set_type(oop field, oop value);
748
749 static int slot(oop reflect);
750 static void set_slot(oop reflect, int value);
751
752 static int modifiers(oop field);
753 static void set_modifiers(oop field, int value);
754
755 static void set_signature(oop constructor, oop value);
756 static void set_annotations(oop constructor, oop value);
757 static void set_parameter_annotations(oop method, oop value);
758 static void set_annotation_default(oop method, oop value);
759
760 // Debugging
761 friend class JavaClasses;
762 };
763
764 class java_lang_reflect_Parameter {
765 private:
766 // Note that to reduce dependencies on the JDK we compute these
767 // offsets at run-time.
768 static int name_offset;
769 static int modifiers_offset;
770 static int index_offset;
771 static int executable_offset;
772
773 static void compute_offsets();
774
775 public:
776 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
777
778 // Allocation
779 static Handle create(TRAPS);
780
781 // Accessors
782 static oop name(oop field);
783 static void set_name(oop field, oop value);
784
785 static int index(oop reflect);
786 static void set_index(oop reflect, int value);
787
788 static int modifiers(oop reflect);
789 static void set_modifiers(oop reflect, int value);
790
791 static oop executable(oop constructor);
792 static void set_executable(oop constructor, oop value);
793
794 friend class JavaClasses;
795 };
796
797 #define MODULE_INJECTED_FIELDS(macro) \
798 macro(java_lang_Module, module_entry, intptr_signature, false)
799
800 class java_lang_Module {
801 private:
802 static int loader_offset;
803 static int name_offset;
804 static int _module_entry_offset;
805 static void compute_offsets();
806
807 public:
808 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
809
810 // Allocation
811 static Handle create(Handle loader, Handle module_name, TRAPS);
812
813 // Testers
814 static bool is_instance(oop obj);
815
816 // Accessors
817 static oop loader(oop module);
818 static void set_loader(oop module, oop value);
819
820 static oop name(oop module);
821 static void set_name(oop module, oop value);
822
823 static ModuleEntry* module_entry(oop module);
824 static void set_module_entry(oop module, ModuleEntry* module_entry);
825
826 friend class JavaClasses;
827 };
828
829 // Interface to jdk.internal.reflect.ConstantPool objects
830 class reflect_ConstantPool {
831 private:
832 // Note that to reduce dependencies on the JDK we compute these
833 // offsets at run-time.
834 static int _oop_offset;
835
836 static void compute_offsets();
837
838 public:
839 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
840
841 // Allocation
842 static Handle create(TRAPS);
843
844 // Accessors
845 static void set_cp(oop reflect, ConstantPool* value);
846 static int oop_offset() {
847 return _oop_offset;
848 }
849
850 static ConstantPool* get_cp(oop reflect);
851
852 // Debugging
853 friend class JavaClasses;
854 };
855
856 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
857 class reflect_UnsafeStaticFieldAccessorImpl {
858 private:
859 static int _base_offset;
860 static void compute_offsets();
861
862 public:
863 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
864
865 static int base_offset() {
866 return _base_offset;
867 }
868
869 // Debugging
870 friend class JavaClasses;
871 };
872
873 // Interface to java.lang primitive type boxing objects:
874 // - java.lang.Boolean
875 // - java.lang.Character
876 // - java.lang.Float
877 // - java.lang.Double
878 // - java.lang.Byte
879 // - java.lang.Short
880 // - java.lang.Integer
881 // - java.lang.Long
882
883 // This could be separated out into 8 individual classes.
884
885 class java_lang_boxing_object: AllStatic {
886 private:
887 enum {
888 hc_value_offset = 0
889 };
890 static int value_offset;
891 static int long_value_offset;
892
893 static oop initialize_and_allocate(BasicType type, TRAPS);
894 public:
895 // Allocation. Returns a boxed value, or NULL for invalid type.
896 static oop create(BasicType type, jvalue* value, TRAPS);
897 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
898 static BasicType get_value(oop box, jvalue* value);
899 static BasicType set_value(oop box, jvalue* value);
900 static BasicType basic_type(oop box);
901 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
902 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
903 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
904 static void print(BasicType type, jvalue* value, outputStream* st);
905
906 static int value_offset_in_bytes(BasicType type) {
907 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
908 value_offset;
909 }
910
911 // Debugging
912 friend class JavaClasses;
913 };
914
915
916
917 // Interface to java.lang.ref.Reference objects
918
919 class java_lang_ref_Reference: AllStatic {
920 public:
921 enum {
922 hc_referent_offset = 0,
923 hc_queue_offset = 1,
924 hc_next_offset = 2,
925 hc_discovered_offset = 3 // Is not last, see SoftRefs.
926 };
927
928 static int referent_offset;
929 static int queue_offset;
930 static int next_offset;
931 static int discovered_offset;
932
933 // Accessors
934 static inline oop referent(oop ref);
935 static inline void set_referent(oop ref, oop value);
936 static inline void set_referent_raw(oop ref, oop value);
937 static inline HeapWord* referent_addr_raw(oop ref);
938 static inline oop next(oop ref);
939 static inline void set_next(oop ref, oop value);
940 static inline void set_next_raw(oop ref, oop value);
941 static inline HeapWord* next_addr_raw(oop ref);
942 static inline oop discovered(oop ref);
943 static inline void set_discovered(oop ref, oop value);
944 static inline void set_discovered_raw(oop ref, oop value);
945 static inline HeapWord* discovered_addr_raw(oop ref);
946 static inline oop queue(oop ref);
947 static inline void set_queue(oop ref, oop value);
948 static bool is_referent_field(oop obj, ptrdiff_t offset);
949 static inline bool is_final(oop ref);
950 static inline bool is_phantom(oop ref);
951 };
952
953
954 // Interface to java.lang.ref.SoftReference objects
955
956 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
957 public:
958 static int timestamp_offset;
959 static int static_clock_offset;
960
961 // Accessors
962 static jlong timestamp(oop ref);
963
964 // Accessors for statics
965 static jlong clock();
966 static void set_clock(jlong value);
967
968 static void compute_offsets();
969 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
970 };
971
972 // Interface to java.lang.invoke.MethodHandle objects
973
974 class MethodHandleEntry;
975
976 class java_lang_invoke_MethodHandle: AllStatic {
977 friend class JavaClasses;
978
979 private:
980 static int _type_offset; // the MethodType of this MH
981 static int _form_offset; // the LambdaForm of this MH
982
983 static void compute_offsets();
984
985 public:
986 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
987
988 // Accessors
989 static oop type(oop mh);
990 static void set_type(oop mh, oop mtype);
991
992 static oop form(oop mh);
993 static void set_form(oop mh, oop lform);
994
995 // Testers
996 static bool is_subclass(Klass* klass) {
997 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
998 }
999 static bool is_instance(oop obj);
1000
1001 // Accessors for code generation:
1002 static int type_offset_in_bytes() { return _type_offset; }
1003 static int form_offset_in_bytes() { return _form_offset; }
1004 };
1005
1006 // Interface to java.lang.invoke.DirectMethodHandle objects
1007
1008 class java_lang_invoke_DirectMethodHandle: AllStatic {
1009 friend class JavaClasses;
1010
1011 private:
1012 static int _member_offset; // the MemberName of this DMH
1013
1014 static void compute_offsets();
1015
1016 public:
1017 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1018
1019 // Accessors
1020 static oop member(oop mh);
1021
1022 // Testers
1023 static bool is_subclass(Klass* klass) {
1024 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1025 }
1026 static bool is_instance(oop obj);
1027
1028 // Accessors for code generation:
1029 static int member_offset_in_bytes() { return _member_offset; }
1030 };
1031
1032 // Interface to java.lang.invoke.LambdaForm objects
1033 // (These are a private interface for managing adapter code generation.)
1034
1035 class java_lang_invoke_LambdaForm: AllStatic {
1036 friend class JavaClasses;
1037
1038 private:
1039 static int _vmentry_offset; // type is MemberName
1040
1041 static void compute_offsets();
1042
1043 public:
1044 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1045
1046 // Accessors
1047 static oop vmentry(oop lform);
1048 static void set_vmentry(oop lform, oop invoker);
1049
1050 // Testers
1051 static bool is_subclass(Klass* klass) {
1052 return SystemDictionary::LambdaForm_klass() != NULL &&
1053 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1054 }
1055 static bool is_instance(oop obj);
1056
1057 // Accessors for code generation:
1058 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1059 };
1060
1061
1062 // Interface to java.lang.invoke.MemberName objects
1063 // (These are a private interface for Java code to query the class hierarchy.)
1064
1065 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1066 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1067 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1068
1069 class java_lang_invoke_ResolvedMethodName : AllStatic {
1070 friend class JavaClasses;
1071
1072 static int _vmtarget_offset;
1073 static int _vmholder_offset;
1074
1075 static void compute_offsets();
1076 public:
1077 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1078
1079 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1080
1081 static Method* vmtarget(oop resolved_method);
1082 static void set_vmtarget(oop resolved_method, Method* method);
1083
1084 static void set_vmholder(oop resolved_method, oop holder);
1085
1086 // find or create resolved member name
1087 static oop find_resolved_method(const methodHandle& m, TRAPS);
1088
1089 static bool is_instance(oop resolved_method);
1090 };
1091
1092
1093 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1094 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1095
1096
1097 class java_lang_invoke_MemberName: AllStatic {
1098 friend class JavaClasses;
1099
1100 private:
1101 // From java.lang.invoke.MemberName:
1102 // private Class<?> clazz; // class in which the method is defined
1103 // private String name; // may be null if not yet materialized
1104 // private Object type; // may be null if not yet materialized
1105 // private int flags; // modifier bits; see reflect.Modifier
1106 // private ResolvedMethodName method; // holds VM-specific target value
1107 // private intptr_t vmindex; // member index within class or interface
1108 static int _clazz_offset;
1109 static int _name_offset;
1110 static int _type_offset;
1111 static int _flags_offset;
1112 static int _method_offset;
1113 static int _vmindex_offset;
1114
1115 static void compute_offsets();
1116
1117 public:
1118 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1119 // Accessors
1120 static oop clazz(oop mname);
1121 static void set_clazz(oop mname, oop clazz);
1122
1123 static oop type(oop mname);
1124 static void set_type(oop mname, oop type);
1125
1126 static oop name(oop mname);
1127 static void set_name(oop mname, oop name);
1128
1129 static int flags(oop mname);
1130 static void set_flags(oop mname, int flags);
1131
1132 // Link through ResolvedMethodName field to get Method*
1133 static Method* vmtarget(oop mname);
1134 static void set_method(oop mname, oop method);
1135
1136 static intptr_t vmindex(oop mname);
1137 static void set_vmindex(oop mname, intptr_t index);
1138
1139 // Testers
1140 static bool is_subclass(Klass* klass) {
1141 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1142 }
1143 static bool is_instance(oop obj);
1144
1145 static bool is_method(oop obj);
1146
1147 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1148 enum {
1149 MN_IS_METHOD = 0x00010000, // method (not constructor)
1150 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1151 MN_IS_FIELD = 0x00040000, // field
1152 MN_IS_TYPE = 0x00080000, // nested type
1153 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1154 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1155 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1156 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1157 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1158 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1159 };
1160
1161 // Accessors for code generation:
1162 static int clazz_offset_in_bytes() { return _clazz_offset; }
1163 static int type_offset_in_bytes() { return _type_offset; }
1164 static int name_offset_in_bytes() { return _name_offset; }
1165 static int flags_offset_in_bytes() { return _flags_offset; }
1166 static int method_offset_in_bytes() { return _method_offset; }
1167 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1168 };
1169
1170
1171 // Interface to java.lang.invoke.MethodType objects
1172
1173 class java_lang_invoke_MethodType: AllStatic {
1174 friend class JavaClasses;
1175
1176 private:
1177 static int _rtype_offset;
1178 static int _ptypes_offset;
1179
1180 static void compute_offsets();
1181
1182 public:
1183 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1184 // Accessors
1185 static oop rtype(oop mt);
1186 static objArrayOop ptypes(oop mt);
1187
1188 static oop ptype(oop mt, int index);
1189 static int ptype_count(oop mt);
1190
1191 static int ptype_slot_count(oop mt); // extra counts for long/double
1192 static int rtype_slot_count(oop mt); // extra counts for long/double
1193
1194 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1195 static void print_signature(oop mt, outputStream* st);
1196
1197 static bool is_instance(oop obj);
1198
1199 static bool equals(oop mt1, oop mt2);
1200
1201 // Accessors for code generation:
1202 static int rtype_offset_in_bytes() { return _rtype_offset; }
1203 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1204 };
1205
1206
1207 // Interface to java.lang.invoke.CallSite objects
1208
1209 class java_lang_invoke_CallSite: AllStatic {
1210 friend class JavaClasses;
1211
1212 private:
1213 static int _target_offset;
1214 static int _context_offset;
1215
1216 static void compute_offsets();
1217
1218 public:
1219 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1220 // Accessors
1221 static oop target( oop site);
1222 static void set_target( oop site, oop target);
1223 static void set_target_volatile( oop site, oop target);
1224
1225 static oop context_no_keepalive(oop site);
1226
1227 // Testers
1228 static bool is_subclass(Klass* klass) {
1229 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1230 }
1231 static bool is_instance(oop obj);
1232
1233 // Accessors for code generation:
1234 static int target_offset_in_bytes() { return _target_offset; }
1235 };
1236
1237 // Interface to java.lang.invoke.ConstantCallSite objects
1238
1239 class java_lang_invoke_ConstantCallSite: AllStatic {
1240 friend class JavaClasses;
1241
1242 private:
1243 static int _is_frozen_offset;
1244
1245 static void compute_offsets();
1246
1247 public:
1248 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1249 // Accessors
1250 static jboolean is_frozen(oop site);
1251
1252 // Testers
1253 static bool is_subclass(Klass* klass) {
1254 return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1255 }
1256 static bool is_instance(oop obj);
1257 };
1258
1259 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1260
1261 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1262 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1263 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1264
1265 class DependencyContext;
1266
1267 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1268 friend class JavaClasses;
1269
1270 private:
1271 static int _vmdependencies_offset;
1272 static int _last_cleanup_offset;
1273
1274 static void compute_offsets();
1275
1276 public:
1277 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1278 // Accessors
1279 static DependencyContext vmdependencies(oop context);
1280
1281 // Testers
1282 static bool is_subclass(Klass* klass) {
1283 return klass->is_subclass_of(SystemDictionary::Context_klass());
1284 }
1285 static bool is_instance(oop obj);
1286 };
1287
1288 // Interface to java.security.AccessControlContext objects
1289
1290 class java_security_AccessControlContext: AllStatic {
1291 private:
1292 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1293 // so we compute the offsets at startup rather than hard-wiring them.
1294 static int _context_offset;
1295 static int _privilegedContext_offset;
1296 static int _isPrivileged_offset;
1297 static int _isAuthorized_offset;
1298
1299 static void compute_offsets();
1300 public:
1301 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1302 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1303
1304 // Debugging/initialization
1305 friend class JavaClasses;
1306 };
1307
1308
1309 // Interface to java.lang.ClassLoader objects
1310
1311 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1312 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1313
1314 class java_lang_ClassLoader : AllStatic {
1315 private:
1316 static int _loader_data_offset;
1317 static bool offsets_computed;
1318 static int parent_offset;
1319 static int parallelCapable_offset;
1320 static int name_offset;
1321 static int nameAndId_offset;
1322 static int unnamedModule_offset;
1323
1324 public:
1325 static void compute_offsets();
1326 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1327
1328 static ClassLoaderData* loader_data_acquire(oop loader);
1329 static ClassLoaderData* loader_data_raw(oop loader);
1330 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1331
1332 static oop parent(oop loader);
1333 static oop name(oop loader);
1334 static oop nameAndId(oop loader);
1335 static bool isAncestor(oop loader, oop cl);
1336
1337 // Support for parallelCapable field
1338 static bool parallelCapable(oop the_class_mirror);
1339
1340 static bool is_trusted_loader(oop loader);
1341
1342 // Return true if this is one of the class loaders associated with
1343 // the generated bytecodes for reflection.
1344 static bool is_reflection_class_loader(oop loader);
1345
1346 // Fix for 4474172
1347 static oop non_reflection_class_loader(oop loader);
1348
1349 // Testers
1350 static bool is_subclass(Klass* klass) {
1351 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1352 }
1353 static bool is_instance(oop obj);
1354
1355 static oop unnamedModule(oop loader);
1356
1357 // Debugging
1358 friend class JavaClasses;
1359 friend class ClassFileParser; // access to number_of_fake_fields
1360 };
1361
1362
1363 // Interface to java.lang.System objects
1364
1365 class java_lang_System : AllStatic {
1366 private:
1367 static int static_in_offset;
1368 static int static_out_offset;
1369 static int static_err_offset;
1370 static int static_security_offset;
1371
1372 public:
1373 static int in_offset_in_bytes();
1374 static int out_offset_in_bytes();
1375 static int err_offset_in_bytes();
1376
1377 static void compute_offsets();
1378 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1379
1380 // Debugging
1381 friend class JavaClasses;
1382 };
1383
1384
1385 // Interface to java.lang.StackTraceElement objects
1386
1387 class java_lang_StackTraceElement: AllStatic {
1388 private:
1389 static int declaringClassObject_offset;
1390 static int classLoaderName_offset;
1391 static int moduleName_offset;
1392 static int moduleVersion_offset;
1393 static int declaringClass_offset;
1394 static int methodName_offset;
1395 static int fileName_offset;
1396 static int lineNumber_offset;
1397
1398 // Setters
1399 static void set_classLoaderName(oop element, oop value);
1400 static void set_moduleName(oop element, oop value);
1401 static void set_moduleVersion(oop element, oop value);
1402 static void set_declaringClass(oop element, oop value);
1403 static void set_methodName(oop element, oop value);
1404 static void set_fileName(oop element, oop value);
1405 static void set_lineNumber(oop element, int value);
1406 static void set_declaringClassObject(oop element, oop value);
1407
1408 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1409 const methodHandle& method, int bci,
1410 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1411
1412 public:
1413 // Create an instance of StackTraceElement
1414 static oop create(const methodHandle& method, int bci, TRAPS);
1415
1416 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1417 int version, int bci, Symbol* name, TRAPS);
1418
1419 static void compute_offsets();
1420 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1421
1422 #if INCLUDE_JVMCI
1423 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1424 #endif
1425
1426 // Debugging
1427 friend class JavaClasses;
1428 };
1429
1430
1431 class Backtrace: AllStatic {
1432 public:
1433 // Helper backtrace functions to store bci|version together.
1434 static int merge_bci_and_version(int bci, int version);
1435 static int merge_mid_and_cpref(int mid, int cpref);
1436 static int bci_at(unsigned int merged);
1437 static int version_at(unsigned int merged);
1438 static int mid_at(unsigned int merged);
1439 static int cpref_at(unsigned int merged);
1440 static int get_line_number(Method* method, int bci);
1441 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1442
1443 // Debugging
1444 friend class JavaClasses;
1445 };
1446
1447 // Interface to java.lang.StackFrameInfo objects
1448
1449 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1450 macro(java_lang_StackFrameInfo, version, short_signature, false)
1451
1452 class java_lang_StackFrameInfo: AllStatic {
1453 private:
1454 static int _memberName_offset;
1455 static int _bci_offset;
1456 static int _version_offset;
1457
1458 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1459
1460 public:
1461 // Setters
1462 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1463 static void set_bci(oop info, int value);
1464
1465 static void set_version(oop info, short value);
1466
1467 static void compute_offsets();
1468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1469
1470 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1471
1472 // Debugging
1473 friend class JavaClasses;
1474 };
1475
1476 class java_lang_LiveStackFrameInfo: AllStatic {
1477 private:
1478 static int _monitors_offset;
1479 static int _locals_offset;
1480 static int _operands_offset;
1481 static int _mode_offset;
1482
1483 public:
1484 static void set_monitors(oop info, oop value);
1485 static void set_locals(oop info, oop value);
1486 static void set_operands(oop info, oop value);
1487 static void set_mode(oop info, int value);
1488
1489 static void compute_offsets();
1490 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1491
1492 // Debugging
1493 friend class JavaClasses;
1494 };
1495
1496 // Interface to java.lang.reflect.RecordComponent objects
1497
1498 class java_lang_reflect_RecordComponent: AllStatic {
1499 private:
1500 static int clazz_offset;
1501 static int name_offset;
1502 static int type_offset;
1503 static int accessor_offset;
1504 static int signature_offset;
1505 static int annotations_offset;
1506 static int typeAnnotations_offset;
1507
1508 // Setters
1509 static void set_clazz(oop element, oop value);
1510 static void set_name(oop element, oop value);
1511 static void set_type(oop element, oop value);
1512 static void set_accessor(oop element, oop value);
1513 static void set_signature(oop element, oop value);
1514 static void set_annotations(oop element, oop value);
1515 static void set_typeAnnotations(oop element, oop value);
1516
1517 public:
1518 // Create an instance of RecordComponent
1519 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1520
1521 static void compute_offsets();
1522 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1523
1524 // Debugging
1525 friend class JavaClasses;
1526 };
1527
1528
1529 // Interface to java.lang.AssertionStatusDirectives objects
1530
1531 class java_lang_AssertionStatusDirectives: AllStatic {
1532 private:
1533 static int classes_offset;
1534 static int classEnabled_offset;
1535 static int packages_offset;
1536 static int packageEnabled_offset;
1537 static int deflt_offset;
1538
1539 public:
1540 // Setters
1541 static void set_classes(oop obj, oop val);
1542 static void set_classEnabled(oop obj, oop val);
1543 static void set_packages(oop obj, oop val);
1544 static void set_packageEnabled(oop obj, oop val);
1545 static void set_deflt(oop obj, bool val);
1546
1547 static void compute_offsets();
1548 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1549
1550 // Debugging
1551 friend class JavaClasses;
1552 };
1553
1554
1555 class java_nio_Buffer: AllStatic {
1556 private:
1557 static int _limit_offset;
1558
1559 public:
1560 static int limit_offset();
1561 static void compute_offsets();
1562 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1563 };
1564
1565 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1566 private:
1567 static int _owner_offset;
1568 public:
1569 static void compute_offsets();
1570 static oop get_owner_threadObj(oop obj);
1571 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1572 };
1573
1574 // Interface to jdk.internal.misc.UnsafeConsants
1575
1576 class jdk_internal_misc_UnsafeConstants : AllStatic {
1577 public:
1578 static void set_unsafe_constants();
1579 static void compute_offsets() { }
1580 static void serialize_offsets(SerializeClosure* f) { }
1581 };
1582
1583 class java_lang_Integer : AllStatic {
1584 public:
1585 static jint value(oop obj);
1586 };
1587
1588 class java_lang_Long : AllStatic {
1589 public:
1590 static jlong value(oop obj);
1591 };
1592
1593 class java_lang_Character : AllStatic {
1594 public:
1595 static jchar value(oop obj);
1596 };
1597
1598 class java_lang_Short : AllStatic {
1599 public:
1600 static jshort value(oop obj);
1601 };
1602
1603 class java_lang_Byte : AllStatic {
1604 public:
1605 static jbyte value(oop obj);
1606 };
1607
1608 class java_lang_Boolean : AllStatic {
1609 private:
1610 static int _static_TRUE_offset;
1611 static int _static_FALSE_offset;
1612 public:
1613 static Symbol* symbol();
1614 static void compute_offsets(InstanceKlass* k);
1615 static oop get_TRUE(InstanceKlass *k);
1616 static oop get_FALSE(InstanceKlass *k);
1617 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1618 static jboolean value(oop obj);
1619 };
1620
1621 class java_lang_Integer_IntegerCache : AllStatic {
1622 private:
1623 static int _static_cache_offset;
1624 public:
1625 static Symbol* symbol();
1626 static void compute_offsets(InstanceKlass* k);
1627 static objArrayOop cache(InstanceKlass *k);
1628 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1629 };
1630
1631 class java_lang_Long_LongCache : AllStatic {
1632 private:
1633 static int _static_cache_offset;
1634 public:
1635 static Symbol* symbol();
1636 static void compute_offsets(InstanceKlass* k);
1637 static objArrayOop cache(InstanceKlass *k);
1638 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1639 };
1640
1641 class java_lang_Character_CharacterCache : AllStatic {
1642 private:
1643 static int _static_cache_offset;
1644 public:
1645 static Symbol* symbol();
1646 static void compute_offsets(InstanceKlass* k);
1647 static objArrayOop cache(InstanceKlass *k);
1648 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1649 };
1650
1651 class java_lang_Short_ShortCache : AllStatic {
1652 private:
1653 static int _static_cache_offset;
1654 public:
1655 static Symbol* symbol();
1656 static void compute_offsets(InstanceKlass* k);
1657 static objArrayOop cache(InstanceKlass *k);
1658 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1659 };
1660
1661 class java_lang_Byte_ByteCache : AllStatic {
1662 private:
1663 static int _static_cache_offset;
1664 public:
1665 static Symbol* symbol();
1666 static void compute_offsets(InstanceKlass* k);
1667 static objArrayOop cache(InstanceKlass *k);
1668 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1669 };
1670
1671 // Use to declare fields that need to be injected into Java classes
1672 // for the JVM to use. The name_index and signature_index are
1673 // declared in vmSymbols. The may_be_java flag is used to declare
1674 // fields that might already exist in Java but should be injected if
1675 // they don't. Otherwise the field is unconditionally injected and
1676 // the JVM uses the injected one. This is to ensure that name
1677 // collisions don't occur. In general may_be_java should be false
1678 // unless there's a good reason.
1679
1680 class InjectedField {
1681 public:
1682 const SystemDictionary::WKID klass_id;
1683 const vmSymbols::SID name_index;
1684 const vmSymbols::SID signature_index;
1685 const bool may_be_java;
1686
1687
1688 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1689 Symbol* name() const { return lookup_symbol(name_index); }
1690 Symbol* signature() const { return lookup_symbol(signature_index); }
1691
1692 int compute_offset();
1693
1694 // Find the Symbol for this index
1695 static Symbol* lookup_symbol(int symbol_index) {
1696 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1697 }
1698 };
1699
1700 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1701 klass##_##name##_enum,
1702
1703 #define ALL_INJECTED_FIELDS(macro) \
1704 CLASS_INJECTED_FIELDS(macro) \
1705 CLASSLOADER_INJECTED_FIELDS(macro) \
1706 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1707 MEMBERNAME_INJECTED_FIELDS(macro) \
1708 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1709 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1710 MODULE_INJECTED_FIELDS(macro)
1711
1712 // Interface to hard-coded offset checking
1713
1714 class JavaClasses : AllStatic {
1715 private:
1716
1717 static InjectedField _injected_fields[];
1718
1719 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1720 public:
1721 enum InjectedFieldID {
1722 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1723 MAX_enum
1724 };
1725
1726 static int compute_injected_offset(InjectedFieldID id);
1727
1728 static void compute_hard_coded_offsets();
1729 static void compute_offsets();
1730 static void check_offsets() PRODUCT_RETURN;
1731 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1732 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1733 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1734 };
1735
1736 #undef DECLARE_INJECTED_FIELD_ENUM
1737
1738 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP