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 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 f(jdk_internal_misc_UnsafeConstants) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.Object objects
92
93 class java_lang_Object : AllStatic {
94 public:
95 static void register_natives(TRAPS);
96 };
97
98 // Interface to java.lang.String objects
99
100 class java_lang_String : AllStatic {
101 private:
102 static int value_offset;
103 static int hash_offset;
104 static int hashIsZero_offset;
105 static int coder_offset;
106
107 static bool initialized;
108
109 static Handle basic_create(int length, bool byte_arr, TRAPS);
110
111 static inline void set_coder(oop string, jbyte coder);
112
113 public:
114
115 // Coders
116 enum Coder {
117 CODER_LATIN1 = 0,
118 CODER_UTF16 = 1
119 };
120
121 static void compute_offsets();
122 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
123
124 // Instance creation
125 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
126 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
127 static Handle create_from_str(const char* utf8_str, TRAPS);
128 static oop create_oop_from_str(const char* utf8_str, TRAPS);
129 static Handle create_from_symbol(Symbol* symbol, TRAPS);
130 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
131 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
132
133 static void set_compact_strings(bool value);
134
135 static int value_offset_in_bytes() {
136 assert(initialized && (value_offset > 0), "Must be initialized");
137 return value_offset;
138 }
139 static int hash_offset_in_bytes() {
140 assert(initialized && (hash_offset > 0), "Must be initialized");
141 return hash_offset;
142 }
143 static int hashIsZero_offset_in_bytes() {
144 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
145 return hashIsZero_offset;
146 }
147 static int coder_offset_in_bytes() {
148 assert(initialized && (coder_offset > 0), "Must be initialized");
149 return coder_offset;
150 }
151
152 static inline void set_value_raw(oop string, typeArrayOop buffer);
153 static inline void set_value(oop string, typeArrayOop buffer);
154
155 // Accessors
156 static inline typeArrayOop value(oop java_string);
157 static inline typeArrayOop value_no_keepalive(oop java_string);
158 static inline bool hash_is_set(oop string);
159 static inline bool is_latin1(oop java_string);
160 static inline int length(oop java_string);
161 static inline int length(oop java_string, typeArrayOop string_value);
162 static int utf8_length(oop java_string);
163 static int utf8_length(oop java_string, typeArrayOop string_value);
164
165 // String converters
166 static char* as_utf8_string(oop java_string);
167 static char* as_utf8_string(oop java_string, char* buf, int buflen);
168 static char* as_utf8_string(oop java_string, int start, int len);
169 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
170 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
171 static char* as_platform_dependent_str(Handle java_string, TRAPS);
172 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
173 // produce an ascii string with all other values quoted using \u####
174 static char* as_quoted_ascii(oop java_string);
175
176 // Compute the hash value for a java.lang.String object which would
177 // contain the characters passed in.
178 //
179 // As the hash value used by the String object itself, in
180 // String.hashCode(). This value is normally calculated in Java code
181 // in the String.hashCode method(), but is precomputed for String
182 // objects in the shared archive file.
183 // hash P(31) from Kernighan & Ritchie
184 //
185 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
186 static unsigned int hash_code(const jchar* s, int len) {
187 unsigned int h = 0;
188 while (len-- > 0) {
189 h = 31*h + (unsigned int) *s;
190 s++;
191 }
192 return h;
193 }
194
195 static unsigned int hash_code(const jbyte* s, int len) {
196 unsigned int h = 0;
197 while (len-- > 0) {
198 h = 31*h + (((unsigned int) *s) & 0xFF);
199 s++;
200 }
201 return h;
202 }
203
204 static unsigned int hash_code(oop java_string);
205
206 static bool equals(oop java_string, const jchar* chars, int len);
207 static bool equals(oop str1, oop str2);
208 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
209
210 // Conversion between '.' and '/' formats
211 static Handle externalize_classname(Handle java_string, TRAPS) {
212 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
213 }
214
215 // Conversion
216 static Symbol* as_symbol(oop java_string);
217 static Symbol* as_symbol_or_null(oop java_string);
218
219 // Testers
220 static bool is_instance(oop obj);
221 static inline bool is_instance_inlined(oop obj);
222
223 // Debugging
224 static void print(oop java_string, outputStream* st);
225 friend class JavaClasses;
226 friend class StringTable;
227 };
228
229
230 // Interface to java.lang.Class objects
231
232 #define CLASS_INJECTED_FIELDS(macro) \
233 macro(java_lang_Class, klass, intptr_signature, false) \
234 macro(java_lang_Class, array_klass, intptr_signature, false) \
235 macro(java_lang_Class, oop_size, int_signature, false) \
236 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
237 macro(java_lang_Class, protection_domain, object_signature, false) \
238 macro(java_lang_Class, signers, object_signature, false) \
239 macro(java_lang_Class, source_file, object_signature, false) \
240 macro(java_lang_Class, classData, object_signature, false)
241
242 class java_lang_Class : AllStatic {
243 friend class VMStructs;
244 friend class JVMCIVMStructs;
245
246 private:
247 // The fake offsets are added by the class loader when java.lang.Class is loaded
248
249 static int _klass_offset;
250 static int _array_klass_offset;
251
252 static int _oop_size_offset;
253 static int _static_oop_field_count_offset;
254
255 static int _protection_domain_offset;
256 static int _init_lock_offset;
257 static int _signers_offset;
258 static int _class_loader_offset;
259 static int _module_offset;
260 static int _component_mirror_offset;
261 static int _name_offset;
262 static int _source_file_offset;
263 static int _classData_offset;
264
265 static bool offsets_computed;
266 static int classRedefinedCount_offset;
267
268 static GrowableArray<Klass*>* _fixup_mirror_list;
269 static GrowableArray<Klass*>* _fixup_module_field_list;
270
271 static void set_init_lock(oop java_class, oop init_lock);
272 static void set_protection_domain(oop java_class, oop protection_domain);
273 static void set_class_loader(oop java_class, oop class_loader);
274 static void set_component_mirror(oop java_class, oop comp_mirror);
275 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
276 Handle classData, TRAPS);
277 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
278 public:
279 static void allocate_fixup_lists();
280 static void compute_offsets();
281
282 // Instance creation
283 static void create_mirror(Klass* k, Handle class_loader, Handle module,
284 Handle protection_domain, Handle classData, TRAPS);
285 static void fixup_mirror(Klass* k, TRAPS);
286 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
287 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
288 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
289
290 // Archiving
291 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
292 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
293 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
294 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
295 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
296 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
297 Handle protection_domain,
298 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
299
300 static void fixup_module_field(Klass* k, Handle module);
301
302 // Conversion
303 static Klass* as_Klass(oop java_class);
304 static Klass* as_Klass_raw(oop java_class);
305 static void set_klass(oop java_class, Klass* klass);
306 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
307 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
308 static void print_signature(oop java_class, outputStream *st);
309 static const char* as_external_name(oop java_class);
310 // Testing
311 static bool is_instance(oop obj);
312
313 static bool is_primitive(oop java_class);
314 static BasicType primitive_type(oop java_class);
315 static oop primitive_mirror(BasicType t);
316 // JVM_NewArray support
317 static Klass* array_klass_acquire(oop java_class);
318 static void release_set_array_klass(oop java_class, Klass* klass);
319 // compiler support for class operations
320 static int klass_offset_in_bytes() { return _klass_offset; }
321 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
322 // Support for classRedefinedCount field
323 static int classRedefinedCount(oop the_class_mirror);
324 static void set_classRedefinedCount(oop the_class_mirror, int value);
325
326 // Support for embedded per-class oops
327 static oop protection_domain(oop java_class);
328 static oop init_lock(oop java_class);
329 static oop component_mirror(oop java_class);
330 static objArrayOop signers(oop java_class);
331 static void set_signers(oop java_class, objArrayOop signers);
332 static oop class_data(oop java_class);
333 static void set_class_data(oop java_class, oop classData);
334
335 static oop class_loader(oop java_class);
336 static void set_module(oop java_class, oop module);
337 static oop module(oop java_class);
338
339 static oop name(Handle java_class, TRAPS);
340
341 static oop source_file(oop java_class);
342 static void set_source_file(oop java_class, oop source_file);
343
344 static int oop_size(oop java_class);
345 static int oop_size_raw(oop java_class);
346 static void set_oop_size(HeapWord* java_class, int size);
347 static int static_oop_field_count(oop java_class);
348 static int static_oop_field_count_raw(oop java_class);
349 static void set_static_oop_field_count(oop java_class, int size);
350
351 static GrowableArray<Klass*>* fixup_mirror_list() {
352 return _fixup_mirror_list;
353 }
354 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
355 _fixup_mirror_list = v;
356 }
357
358 static GrowableArray<Klass*>* fixup_module_field_list() {
359 return _fixup_module_field_list;
360 }
361 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
362 _fixup_module_field_list = v;
363 }
364
365 // Debugging
366 friend class JavaClasses;
367 friend class InstanceKlass; // verification code accesses offsets
368 friend class ClassFileParser; // access to number_of_fake_fields
369 };
370
371 // Interface to java.lang.Thread objects
372
373 class java_lang_Thread : AllStatic {
374 private:
375 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
376 // so we compute the offsets at startup rather than hard-wiring them.
377 static int _name_offset;
378 static int _group_offset;
379 static int _contextClassLoader_offset;
380 static int _inheritedAccessControlContext_offset;
381 static int _priority_offset;
382 static int _eetop_offset;
383 static int _interrupted_offset;
384 static int _daemon_offset;
385 static int _stillborn_offset;
386 static int _stackSize_offset;
387 static int _tid_offset;
388 static int _thread_status_offset;
389 static int _park_blocker_offset;
390
391 static void compute_offsets();
392
393 public:
394 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
395
396 // Instance creation
397 static oop create();
398 // Returns the JavaThread associated with the thread obj
399 static JavaThread* thread(oop java_thread);
400 // Set JavaThread for instance
401 static void set_thread(oop java_thread, JavaThread* thread);
402 // Interrupted status
403 static bool interrupted(oop java_thread);
404 static void set_interrupted(oop java_thread, bool val);
405 // Name
406 static oop name(oop java_thread);
407 static void set_name(oop java_thread, oop name);
408 // Priority
409 static ThreadPriority priority(oop java_thread);
410 static void set_priority(oop java_thread, ThreadPriority priority);
411 // Thread group
412 static oop threadGroup(oop java_thread);
413 // Stillborn
414 static bool is_stillborn(oop java_thread);
415 static void set_stillborn(oop java_thread);
416 // Alive (NOTE: this is not really a field, but provides the correct
417 // definition without doing a Java call)
418 static bool is_alive(oop java_thread);
419 // Daemon
420 static bool is_daemon(oop java_thread);
421 static void set_daemon(oop java_thread);
422 // Context ClassLoader
423 static oop context_class_loader(oop java_thread);
424 // Control context
425 static oop inherited_access_control_context(oop java_thread);
426 // Stack size hint
427 static jlong stackSize(oop java_thread);
428 // Thread ID
429 static jlong thread_id(oop java_thread);
430
431 // Blocker object responsible for thread parking
432 static oop park_blocker(oop java_thread);
433
434 // Java Thread Status for JVMTI and M&M use.
435 // This thread status info is saved in threadStatus field of
436 // java.lang.Thread java class.
437 enum ThreadStatus {
438 NEW = 0,
439 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
440 JVMTI_THREAD_STATE_RUNNABLE,
441 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
442 JVMTI_THREAD_STATE_WAITING +
443 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
444 JVMTI_THREAD_STATE_SLEEPING,
445 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
446 JVMTI_THREAD_STATE_WAITING +
447 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
448 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
449 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
450 JVMTI_THREAD_STATE_WAITING +
451 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
452 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
453 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
454 JVMTI_THREAD_STATE_WAITING +
455 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
456 JVMTI_THREAD_STATE_PARKED,
457 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
458 JVMTI_THREAD_STATE_WAITING +
459 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
460 JVMTI_THREAD_STATE_PARKED,
461 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
462 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
463 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
464 };
465 // Write thread status info to threadStatus field of java.lang.Thread.
466 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
467 // Read thread status info from threadStatus field of java.lang.Thread.
468 static ThreadStatus get_thread_status(oop java_thread_oop);
469
470 static const char* thread_status_name(oop java_thread_oop);
471
472 // Debugging
473 friend class JavaClasses;
474 };
475
476 // Interface to java.lang.ThreadGroup objects
477
478 class java_lang_ThreadGroup : AllStatic {
479 private:
480 static int _parent_offset;
481 static int _name_offset;
482 static int _threads_offset;
483 static int _groups_offset;
484 static int _maxPriority_offset;
485 static int _destroyed_offset;
486 static int _daemon_offset;
487 static int _nthreads_offset;
488 static int _ngroups_offset;
489
490 static void compute_offsets();
491
492 public:
493 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
494
495 // parent ThreadGroup
496 static oop parent(oop java_thread_group);
497 // name
498 static const char* name(oop java_thread_group);
499 // ("name as oop" accessor is not necessary)
500 // Number of threads in group
501 static int nthreads(oop java_thread_group);
502 // threads
503 static objArrayOop threads(oop java_thread_group);
504 // Number of threads in group
505 static int ngroups(oop java_thread_group);
506 // groups
507 static objArrayOop groups(oop java_thread_group);
508 // maxPriority in group
509 static ThreadPriority maxPriority(oop java_thread_group);
510 // Destroyed
511 static bool is_destroyed(oop java_thread_group);
512 // Daemon
513 static bool is_daemon(oop java_thread_group);
514 // Debugging
515 friend class JavaClasses;
516 };
517
518
519
520 // Interface to java.lang.Throwable objects
521
522 class java_lang_Throwable: AllStatic {
523 friend class BacktraceBuilder;
524 friend class BacktraceIterator;
525
526 private:
527 // Offsets
528 enum {
529 hc_backtrace_offset = 0,
530 hc_detailMessage_offset = 1,
531 hc_cause_offset = 2, // New since 1.4
532 hc_stackTrace_offset = 3 // New since 1.4
533 };
534 // Trace constants
535 enum {
536 trace_methods_offset = 0,
537 trace_bcis_offset = 1,
538 trace_mirrors_offset = 2,
539 trace_names_offset = 3,
540 trace_next_offset = 4,
541 trace_hidden_offset = 5,
542 trace_size = 6,
543 trace_chunk_size = 32
544 };
545
546 static int backtrace_offset;
547 static int detailMessage_offset;
548 static int stackTrace_offset;
549 static int depth_offset;
550 static int static_unassigned_stacktrace_offset;
551
552 // StackTrace (programmatic access, new since 1.4)
553 static void clear_stacktrace(oop throwable);
554 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
555 static void set_stacktrace(oop throwable, oop st_element_array);
556 static oop unassigned_stacktrace();
557
558 public:
559 // Backtrace
560 static oop backtrace(oop throwable);
561 static void set_backtrace(oop throwable, oop value);
562 static int depth(oop throwable);
563 static void set_depth(oop throwable, int value);
564 // Needed by JVMTI to filter out this internal field.
565 static int get_backtrace_offset() { return backtrace_offset;}
566 static int get_detailMessage_offset() { return detailMessage_offset;}
567 // Message
568 static oop message(oop throwable);
569 static void set_message(oop throwable, oop value);
570 static Symbol* detail_message(oop throwable);
571 static void print_stack_element(outputStream *st, Method* method, int bci);
572 static void print_stack_usage(Handle stream);
573
574 static void compute_offsets();
575 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
576
577 // Allocate space for backtrace (created but stack trace not filled in)
578 static void allocate_backtrace(Handle throwable, TRAPS);
579 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
580 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
581 // Fill in current stack trace, can cause GC
582 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
583 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
584 // Programmatic access to stack trace
585 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
586 // Printing
587 static void print(oop throwable, outputStream* st);
588 static void print_stack_trace(Handle throwable, outputStream* st);
589 static void java_printStackTrace(Handle throwable, TRAPS);
590 // Debugging
591 friend class JavaClasses;
592 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
593 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
594 };
595
596
597 // Interface to java.lang.reflect.AccessibleObject objects
598
599 class java_lang_reflect_AccessibleObject: AllStatic {
600 private:
601 // Note that to reduce dependencies on the JDK we compute these
602 // offsets at run-time.
603 static int override_offset;
604
605 static void compute_offsets();
606
607 public:
608 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
609
610 // Accessors
611 static jboolean override(oop reflect);
612 static void set_override(oop reflect, jboolean value);
613
614 // Debugging
615 friend class JavaClasses;
616 };
617
618
619 // Interface to java.lang.reflect.Method objects
620
621 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
622 private:
623 // Note that to reduce dependencies on the JDK we compute these
624 // offsets at run-time.
625 static int clazz_offset;
626 static int name_offset;
627 static int returnType_offset;
628 static int parameterTypes_offset;
629 static int exceptionTypes_offset;
630 static int slot_offset;
631 static int modifiers_offset;
632 static int signature_offset;
633 static int annotations_offset;
634 static int parameter_annotations_offset;
635 static int annotation_default_offset;
636
637 static void compute_offsets();
638 public:
639 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
640
641 // Allocation
642 static Handle create(TRAPS);
643
644 // Accessors
645 static oop clazz(oop reflect);
646 static void set_clazz(oop reflect, oop value);
647
648 static void set_name(oop method, oop value);
649
650 static oop return_type(oop method);
651 static void set_return_type(oop method, oop value);
652
653 static oop parameter_types(oop method);
654 static void set_parameter_types(oop method, oop value);
655
656 static int slot(oop reflect);
657 static void set_slot(oop reflect, int value);
658
659 static void set_exception_types(oop method, oop value);
660 static void set_modifiers(oop method, int value);
661 static void set_signature(oop method, oop value);
662 static void set_annotations(oop method, oop value);
663 static void set_parameter_annotations(oop method, oop value);
664 static void set_annotation_default(oop method, oop value);
665
666 // Debugging
667 friend class JavaClasses;
668 };
669
670
671 // Interface to java.lang.reflect.Constructor objects
672
673 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
674 private:
675 // Note that to reduce dependencies on the JDK we compute these
676 // offsets at run-time.
677 static int clazz_offset;
678 static int parameterTypes_offset;
679 static int exceptionTypes_offset;
680 static int slot_offset;
681 static int modifiers_offset;
682 static int signature_offset;
683 static int annotations_offset;
684 static int parameter_annotations_offset;
685
686 static void compute_offsets();
687 public:
688 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
689
690 // Allocation
691 static Handle create(TRAPS);
692
693 // Accessors
694 static oop clazz(oop reflect);
695 static void set_clazz(oop reflect, oop value);
696
697 static oop parameter_types(oop constructor);
698 static void set_parameter_types(oop constructor, oop value);
699
700 static int slot(oop reflect);
701 static void set_slot(oop reflect, int value);
702
703 static void set_exception_types(oop constructor, oop value);
704 static void set_modifiers(oop constructor, int value);
705 static void set_signature(oop constructor, oop value);
706 static void set_annotations(oop constructor, oop value);
707 static void set_parameter_annotations(oop method, oop value);
708
709 // Debugging
710 friend class JavaClasses;
711 };
712
713
714 // Interface to java.lang.reflect.Field objects
715
716 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
717 private:
718 // Note that to reduce dependencies on the JDK we compute these
719 // offsets at run-time.
720 static int clazz_offset;
721 static int name_offset;
722 static int type_offset;
723 static int slot_offset;
724 static int modifiers_offset;
725 static int signature_offset;
726 static int annotations_offset;
727
728 static void compute_offsets();
729
730 public:
731 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
732
733 // Allocation
734 static Handle create(TRAPS);
735
736 // Accessors
737 static oop clazz(oop reflect);
738 static void set_clazz(oop reflect, oop value);
739
740 static oop name(oop field);
741 static void set_name(oop field, oop value);
742
743 static oop type(oop field);
744 static void set_type(oop field, oop value);
745
746 static int slot(oop reflect);
747 static void set_slot(oop reflect, int value);
748
749 static int modifiers(oop field);
750 static void set_modifiers(oop field, int value);
751
752 static void set_signature(oop constructor, oop value);
753 static void set_annotations(oop constructor, oop value);
754 static void set_parameter_annotations(oop method, oop value);
755 static void set_annotation_default(oop method, oop value);
756
757 // Debugging
758 friend class JavaClasses;
759 };
760
761 class java_lang_reflect_Parameter {
762 private:
763 // Note that to reduce dependencies on the JDK we compute these
764 // offsets at run-time.
765 static int name_offset;
766 static int modifiers_offset;
767 static int index_offset;
768 static int executable_offset;
769
770 static void compute_offsets();
771
772 public:
773 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
774
775 // Allocation
776 static Handle create(TRAPS);
777
778 // Accessors
779 static oop name(oop field);
780 static void set_name(oop field, oop value);
781
782 static int index(oop reflect);
783 static void set_index(oop reflect, int value);
784
785 static int modifiers(oop reflect);
786 static void set_modifiers(oop reflect, int value);
787
788 static oop executable(oop constructor);
789 static void set_executable(oop constructor, oop value);
790
791 friend class JavaClasses;
792 };
793
794 #define MODULE_INJECTED_FIELDS(macro) \
795 macro(java_lang_Module, module_entry, intptr_signature, false)
796
797 class java_lang_Module {
798 private:
799 static int loader_offset;
800 static int name_offset;
801 static int _module_entry_offset;
802 static void compute_offsets();
803
804 public:
805 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
806
807 // Allocation
808 static Handle create(Handle loader, Handle module_name, TRAPS);
809
810 // Testers
811 static bool is_instance(oop obj);
812
813 // Accessors
814 static oop loader(oop module);
815 static void set_loader(oop module, oop value);
816
817 static oop name(oop module);
818 static void set_name(oop module, oop value);
819
820 static ModuleEntry* module_entry(oop module);
821 static void set_module_entry(oop module, ModuleEntry* module_entry);
822
823 friend class JavaClasses;
824 };
825
826 // Interface to jdk.internal.reflect.ConstantPool objects
827 class reflect_ConstantPool {
828 private:
829 // Note that to reduce dependencies on the JDK we compute these
830 // offsets at run-time.
831 static int _oop_offset;
832
833 static void compute_offsets();
834
835 public:
836 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
837
838 // Allocation
839 static Handle create(TRAPS);
840
841 // Accessors
842 static void set_cp(oop reflect, ConstantPool* value);
843 static int oop_offset() {
844 return _oop_offset;
845 }
846
847 static ConstantPool* get_cp(oop reflect);
848
849 // Debugging
850 friend class JavaClasses;
851 };
852
853 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
854 class reflect_UnsafeStaticFieldAccessorImpl {
855 private:
856 static int _base_offset;
857 static void compute_offsets();
858
859 public:
860 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
861
862 static int base_offset() {
863 return _base_offset;
864 }
865
866 // Debugging
867 friend class JavaClasses;
868 };
869
870 // Interface to java.lang primitive type boxing objects:
871 // - java.lang.Boolean
872 // - java.lang.Character
873 // - java.lang.Float
874 // - java.lang.Double
875 // - java.lang.Byte
876 // - java.lang.Short
877 // - java.lang.Integer
878 // - java.lang.Long
879
880 // This could be separated out into 8 individual classes.
881
882 class java_lang_boxing_object: AllStatic {
883 private:
884 enum {
885 hc_value_offset = 0
886 };
887 static int value_offset;
888 static int long_value_offset;
889
890 static oop initialize_and_allocate(BasicType type, TRAPS);
891 public:
892 // Allocation. Returns a boxed value, or NULL for invalid type.
893 static oop create(BasicType type, jvalue* value, TRAPS);
894 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
895 static BasicType get_value(oop box, jvalue* value);
896 static BasicType set_value(oop box, jvalue* value);
897 static BasicType basic_type(oop box);
898 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
899 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
900 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
901 static void print(BasicType type, jvalue* value, outputStream* st);
902
903 static int value_offset_in_bytes(BasicType type) {
904 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
905 value_offset;
906 }
907
908 // Debugging
909 friend class JavaClasses;
910 };
911
912
913
914 // Interface to java.lang.ref.Reference objects
915
916 class java_lang_ref_Reference: AllStatic {
917 public:
918 enum {
919 hc_referent_offset = 0,
920 hc_queue_offset = 1,
921 hc_next_offset = 2,
922 hc_discovered_offset = 3 // Is not last, see SoftRefs.
923 };
924
925 static int referent_offset;
926 static int queue_offset;
927 static int next_offset;
928 static int discovered_offset;
929
930 // Accessors
931 static inline oop referent(oop ref);
932 static inline void set_referent(oop ref, oop value);
933 static inline void set_referent_raw(oop ref, oop value);
934 static inline HeapWord* referent_addr_raw(oop ref);
935 static inline oop next(oop ref);
936 static inline void set_next(oop ref, oop value);
937 static inline void set_next_raw(oop ref, oop value);
938 static inline HeapWord* next_addr_raw(oop ref);
939 static inline oop discovered(oop ref);
940 static inline void set_discovered(oop ref, oop value);
941 static inline void set_discovered_raw(oop ref, oop value);
942 static inline HeapWord* discovered_addr_raw(oop ref);
943 static inline oop queue(oop ref);
944 static inline void set_queue(oop ref, oop value);
945 static bool is_referent_field(oop obj, ptrdiff_t offset);
946 static inline bool is_final(oop ref);
947 static inline bool is_phantom(oop ref);
948 };
949
950
951 // Interface to java.lang.ref.SoftReference objects
952
953 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
954 public:
955 static int timestamp_offset;
956 static int static_clock_offset;
957
958 // Accessors
959 static jlong timestamp(oop ref);
960
961 // Accessors for statics
962 static jlong clock();
963 static void set_clock(jlong value);
964
965 static void compute_offsets();
966 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
967 };
968
969 // Interface to java.lang.invoke.MethodHandle objects
970
971 class MethodHandleEntry;
972
973 class java_lang_invoke_MethodHandle: AllStatic {
974 friend class JavaClasses;
975
976 private:
977 static int _type_offset; // the MethodType of this MH
978 static int _form_offset; // the LambdaForm of this MH
979
980 static void compute_offsets();
981
982 public:
983 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
984
985 // Accessors
986 static oop type(oop mh);
987 static void set_type(oop mh, oop mtype);
988
989 static oop form(oop mh);
990 static void set_form(oop mh, oop lform);
991
992 // Testers
993 static bool is_subclass(Klass* klass) {
994 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
995 }
996 static bool is_instance(oop obj);
997
998 // Accessors for code generation:
999 static int type_offset_in_bytes() { return _type_offset; }
1000 static int form_offset_in_bytes() { return _form_offset; }
1001 };
1002
1003 // Interface to java.lang.invoke.DirectMethodHandle objects
1004
1005 class java_lang_invoke_DirectMethodHandle: AllStatic {
1006 friend class JavaClasses;
1007
1008 private:
1009 static int _member_offset; // the MemberName of this DMH
1010
1011 static void compute_offsets();
1012
1013 public:
1014 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1015
1016 // Accessors
1017 static oop member(oop mh);
1018
1019 // Testers
1020 static bool is_subclass(Klass* klass) {
1021 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1022 }
1023 static bool is_instance(oop obj);
1024
1025 // Accessors for code generation:
1026 static int member_offset_in_bytes() { return _member_offset; }
1027 };
1028
1029 // Interface to java.lang.invoke.LambdaForm objects
1030 // (These are a private interface for managing adapter code generation.)
1031
1032 class java_lang_invoke_LambdaForm: AllStatic {
1033 friend class JavaClasses;
1034
1035 private:
1036 static int _vmentry_offset; // type is MemberName
1037
1038 static void compute_offsets();
1039
1040 public:
1041 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1042
1043 // Accessors
1044 static oop vmentry(oop lform);
1045 static void set_vmentry(oop lform, oop invoker);
1046
1047 // Testers
1048 static bool is_subclass(Klass* klass) {
1049 return SystemDictionary::LambdaForm_klass() != NULL &&
1050 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1051 }
1052 static bool is_instance(oop obj);
1053
1054 // Accessors for code generation:
1055 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1056 };
1057
1058
1059 // Interface to java.lang.invoke.MemberName objects
1060 // (These are a private interface for Java code to query the class hierarchy.)
1061
1062 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1063 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1064 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1065
1066 class java_lang_invoke_ResolvedMethodName : AllStatic {
1067 friend class JavaClasses;
1068
1069 static int _vmtarget_offset;
1070 static int _vmholder_offset;
1071
1072 static void compute_offsets();
1073 public:
1074 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1075
1076 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1077
1078 static Method* vmtarget(oop resolved_method);
1079 static void set_vmtarget(oop resolved_method, Method* method);
1080
1081 static void set_vmholder(oop resolved_method, oop holder);
1082
1083 // find or create resolved member name
1084 static oop find_resolved_method(const methodHandle& m, TRAPS);
1085
1086 static bool is_instance(oop resolved_method);
1087 };
1088
1089
1090 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1091 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1092
1093
1094 class java_lang_invoke_MemberName: AllStatic {
1095 friend class JavaClasses;
1096
1097 private:
1098 // From java.lang.invoke.MemberName:
1099 // private Class<?> clazz; // class in which the method is defined
1100 // private String name; // may be null if not yet materialized
1101 // private Object type; // may be null if not yet materialized
1102 // private int flags; // modifier bits; see reflect.Modifier
1103 // private ResolvedMethodName method; // holds VM-specific target value
1104 // private intptr_t vmindex; // member index within class or interface
1105 static int _clazz_offset;
1106 static int _name_offset;
1107 static int _type_offset;
1108 static int _flags_offset;
1109 static int _method_offset;
1110 static int _vmindex_offset;
1111
1112 static void compute_offsets();
1113
1114 public:
1115 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1116 // Accessors
1117 static oop clazz(oop mname);
1118 static void set_clazz(oop mname, oop clazz);
1119
1120 static oop type(oop mname);
1121 static void set_type(oop mname, oop type);
1122
1123 static oop name(oop mname);
1124 static void set_name(oop mname, oop name);
1125
1126 static int flags(oop mname);
1127 static void set_flags(oop mname, int flags);
1128
1129 // Link through ResolvedMethodName field to get Method*
1130 static Method* vmtarget(oop mname);
1131 static void set_method(oop mname, oop method);
1132
1133 static intptr_t vmindex(oop mname);
1134 static void set_vmindex(oop mname, intptr_t index);
1135
1136 // Testers
1137 static bool is_subclass(Klass* klass) {
1138 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1139 }
1140 static bool is_instance(oop obj);
1141
1142 static bool is_method(oop obj);
1143
1144 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1145 enum {
1146 MN_IS_METHOD = 0x00010000, // method (not constructor)
1147 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1148 MN_IS_FIELD = 0x00040000, // field
1149 MN_IS_TYPE = 0x00080000, // nested type
1150 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1151 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1152 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1153 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1154 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1155 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1156 MN_NESTMATE_CLASS = 0x00000001,
1157 MN_HIDDEN_CLASS = 0x00000002,
1158 MN_WEAK_CLASS = 0x00000004,
1159 MN_ACCESS_VM_ANNOTATIONS = 0x00100000
1160 };
1161
1162 // Accessors for code generation:
1163 static int clazz_offset_in_bytes() { return _clazz_offset; }
1164 static int type_offset_in_bytes() { return _type_offset; }
1165 static int name_offset_in_bytes() { return _name_offset; }
1166 static int flags_offset_in_bytes() { return _flags_offset; }
1167 static int method_offset_in_bytes() { return _method_offset; }
1168 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1169 };
1170
1171
1172 // Interface to java.lang.invoke.MethodType objects
1173
1174 class java_lang_invoke_MethodType: AllStatic {
1175 friend class JavaClasses;
1176
1177 private:
1178 static int _rtype_offset;
1179 static int _ptypes_offset;
1180
1181 static void compute_offsets();
1182
1183 public:
1184 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1185 // Accessors
1186 static oop rtype(oop mt);
1187 static objArrayOop ptypes(oop mt);
1188
1189 static oop ptype(oop mt, int index);
1190 static int ptype_count(oop mt);
1191
1192 static int ptype_slot_count(oop mt); // extra counts for long/double
1193 static int rtype_slot_count(oop mt); // extra counts for long/double
1194
1195 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1196 static void print_signature(oop mt, outputStream* st);
1197
1198 static bool is_instance(oop obj);
1199
1200 static bool equals(oop mt1, oop mt2);
1201
1202 // Accessors for code generation:
1203 static int rtype_offset_in_bytes() { return _rtype_offset; }
1204 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1205 };
1206
1207
1208 // Interface to java.lang.invoke.CallSite objects
1209
1210 class java_lang_invoke_CallSite: AllStatic {
1211 friend class JavaClasses;
1212
1213 private:
1214 static int _target_offset;
1215 static int _context_offset;
1216
1217 static void compute_offsets();
1218
1219 public:
1220 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1221 // Accessors
1222 static oop target( oop site);
1223 static void set_target( oop site, oop target);
1224 static void set_target_volatile( oop site, oop target);
1225
1226 static oop context_no_keepalive(oop site);
1227
1228 // Testers
1229 static bool is_subclass(Klass* klass) {
1230 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1231 }
1232 static bool is_instance(oop obj);
1233
1234 // Accessors for code generation:
1235 static int target_offset_in_bytes() { return _target_offset; }
1236 };
1237
1238 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1239
1240 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1241 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1242 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1243
1244 class DependencyContext;
1245
1246 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1247 friend class JavaClasses;
1248
1249 private:
1250 static int _vmdependencies_offset;
1251 static int _last_cleanup_offset;
1252
1253 static void compute_offsets();
1254
1255 public:
1256 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1257 // Accessors
1258 static DependencyContext vmdependencies(oop context);
1259
1260 // Testers
1261 static bool is_subclass(Klass* klass) {
1262 return klass->is_subclass_of(SystemDictionary::Context_klass());
1263 }
1264 static bool is_instance(oop obj);
1265 };
1266
1267 // Interface to java.security.AccessControlContext objects
1268
1269 class java_security_AccessControlContext: AllStatic {
1270 private:
1271 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1272 // so we compute the offsets at startup rather than hard-wiring them.
1273 static int _context_offset;
1274 static int _privilegedContext_offset;
1275 static int _isPrivileged_offset;
1276 static int _isAuthorized_offset;
1277
1278 static void compute_offsets();
1279 public:
1280 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1281 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1282
1283 // Debugging/initialization
1284 friend class JavaClasses;
1285 };
1286
1287
1288 // Interface to java.lang.ClassLoader objects
1289
1290 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1291 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1292
1293 class java_lang_ClassLoader : AllStatic {
1294 private:
1295 static int _loader_data_offset;
1296 static bool offsets_computed;
1297 static int parent_offset;
1298 static int parallelCapable_offset;
1299 static int name_offset;
1300 static int nameAndId_offset;
1301 static int unnamedModule_offset;
1302
1303 public:
1304 static void compute_offsets();
1305 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1306
1307 static ClassLoaderData* loader_data_acquire(oop loader);
1308 static ClassLoaderData* loader_data_raw(oop loader);
1309 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1310
1311 static oop parent(oop loader);
1312 static oop name(oop loader);
1313 static oop nameAndId(oop loader);
1314 static bool isAncestor(oop loader, oop cl);
1315
1316 // Support for parallelCapable field
1317 static bool parallelCapable(oop the_class_mirror);
1318
1319 static bool is_trusted_loader(oop loader);
1320
1321 // Return true if this is one of the class loaders associated with
1322 // the generated bytecodes for reflection.
1323 static bool is_reflection_class_loader(oop loader);
1324
1325 // Fix for 4474172
1326 static oop non_reflection_class_loader(oop loader);
1327
1328 // Testers
1329 static bool is_subclass(Klass* klass) {
1330 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1331 }
1332 static bool is_instance(oop obj);
1333
1334 static oop unnamedModule(oop loader);
1335
1336 // Debugging
1337 friend class JavaClasses;
1338 friend class ClassFileParser; // access to number_of_fake_fields
1339 };
1340
1341
1342 // Interface to java.lang.System objects
1343
1344 class java_lang_System : AllStatic {
1345 private:
1346 static int static_in_offset;
1347 static int static_out_offset;
1348 static int static_err_offset;
1349 static int static_security_offset;
1350
1351 public:
1352 static int in_offset_in_bytes();
1353 static int out_offset_in_bytes();
1354 static int err_offset_in_bytes();
1355
1356 static void compute_offsets();
1357 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1358
1359 // Debugging
1360 friend class JavaClasses;
1361 };
1362
1363
1364 // Interface to java.lang.StackTraceElement objects
1365
1366 class java_lang_StackTraceElement: AllStatic {
1367 private:
1368 static int declaringClassObject_offset;
1369 static int classLoaderName_offset;
1370 static int moduleName_offset;
1371 static int moduleVersion_offset;
1372 static int declaringClass_offset;
1373 static int methodName_offset;
1374 static int fileName_offset;
1375 static int lineNumber_offset;
1376
1377 // Setters
1378 static void set_classLoaderName(oop element, oop value);
1379 static void set_moduleName(oop element, oop value);
1380 static void set_moduleVersion(oop element, oop value);
1381 static void set_declaringClass(oop element, oop value);
1382 static void set_methodName(oop element, oop value);
1383 static void set_fileName(oop element, oop value);
1384 static void set_lineNumber(oop element, int value);
1385 static void set_declaringClassObject(oop element, oop value);
1386
1387 public:
1388 // Create an instance of StackTraceElement
1389 static oop create(const methodHandle& method, int bci, TRAPS);
1390
1391 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1392 int version, int bci, Symbol* name, TRAPS);
1393
1394 static void compute_offsets();
1395 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1396
1397 #if INCLUDE_JVMCI
1398 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1399 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1400 #endif
1401
1402 // Debugging
1403 friend class JavaClasses;
1404 };
1405
1406
1407 class Backtrace: AllStatic {
1408 public:
1409 // Helper backtrace functions to store bci|version together.
1410 static int merge_bci_and_version(int bci, int version);
1411 static int merge_mid_and_cpref(int mid, int cpref);
1412 static int bci_at(unsigned int merged);
1413 static int version_at(unsigned int merged);
1414 static int mid_at(unsigned int merged);
1415 static int cpref_at(unsigned int merged);
1416 static int get_line_number(Method* method, int bci);
1417 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1418
1419 // Debugging
1420 friend class JavaClasses;
1421 };
1422
1423 // Interface to java.lang.StackFrameInfo objects
1424
1425 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1426 macro(java_lang_StackFrameInfo, version, short_signature, false)
1427
1428 class java_lang_StackFrameInfo: AllStatic {
1429 private:
1430 static int _memberName_offset;
1431 static int _bci_offset;
1432 static int _version_offset;
1433
1434 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1435
1436 public:
1437 // Setters
1438 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1439 static void set_bci(oop info, int value);
1440
1441 static void set_version(oop info, short value);
1442
1443 static void compute_offsets();
1444 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1445
1446 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1447
1448 // Debugging
1449 friend class JavaClasses;
1450 };
1451
1452 class java_lang_LiveStackFrameInfo: AllStatic {
1453 private:
1454 static int _monitors_offset;
1455 static int _locals_offset;
1456 static int _operands_offset;
1457 static int _mode_offset;
1458
1459 public:
1460 static void set_monitors(oop info, oop value);
1461 static void set_locals(oop info, oop value);
1462 static void set_operands(oop info, oop value);
1463 static void set_mode(oop info, int value);
1464
1465 static void compute_offsets();
1466 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1467
1468 // Debugging
1469 friend class JavaClasses;
1470 };
1471
1472 // Interface to java.lang.AssertionStatusDirectives objects
1473
1474 class java_lang_AssertionStatusDirectives: AllStatic {
1475 private:
1476 static int classes_offset;
1477 static int classEnabled_offset;
1478 static int packages_offset;
1479 static int packageEnabled_offset;
1480 static int deflt_offset;
1481
1482 public:
1483 // Setters
1484 static void set_classes(oop obj, oop val);
1485 static void set_classEnabled(oop obj, oop val);
1486 static void set_packages(oop obj, oop val);
1487 static void set_packageEnabled(oop obj, oop val);
1488 static void set_deflt(oop obj, bool val);
1489
1490 static void compute_offsets();
1491 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1492
1493 // Debugging
1494 friend class JavaClasses;
1495 };
1496
1497
1498 class java_nio_Buffer: AllStatic {
1499 private:
1500 static int _limit_offset;
1501
1502 public:
1503 static int limit_offset();
1504 static void compute_offsets();
1505 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1506 };
1507
1508 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1509 private:
1510 static int _owner_offset;
1511 public:
1512 static void compute_offsets();
1513 static oop get_owner_threadObj(oop obj);
1514 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1515 };
1516
1517 // Interface to jdk.internal.misc.UnsafeConsants
1518
1519 class jdk_internal_misc_UnsafeConstants : AllStatic {
1520 public:
1521 static void set_unsafe_constants();
1522 static void compute_offsets() { }
1523 static void serialize_offsets(SerializeClosure* f) { }
1524 };
1525
1526 class java_lang_Integer : AllStatic {
1527 public:
1528 static jint value(oop obj);
1529 };
1530
1531 class java_lang_Long : AllStatic {
1532 public:
1533 static jlong value(oop obj);
1534 };
1535
1536 class java_lang_Character : AllStatic {
1537 public:
1538 static jchar value(oop obj);
1539 };
1540
1541 class java_lang_Short : AllStatic {
1542 public:
1543 static jshort value(oop obj);
1544 };
1545
1546 class java_lang_Byte : AllStatic {
1547 public:
1548 static jbyte value(oop obj);
1549 };
1550
1551 class java_lang_Boolean : AllStatic {
1552 private:
1553 static int _static_TRUE_offset;
1554 static int _static_FALSE_offset;
1555 public:
1556 static Symbol* symbol();
1557 static void compute_offsets(InstanceKlass* k);
1558 static oop get_TRUE(InstanceKlass *k);
1559 static oop get_FALSE(InstanceKlass *k);
1560 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1561 static jboolean value(oop obj);
1562 };
1563
1564 class java_lang_Integer_IntegerCache : AllStatic {
1565 private:
1566 static int _static_cache_offset;
1567 public:
1568 static Symbol* symbol();
1569 static void compute_offsets(InstanceKlass* k);
1570 static objArrayOop cache(InstanceKlass *k);
1571 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1572 };
1573
1574 class java_lang_Long_LongCache : AllStatic {
1575 private:
1576 static int _static_cache_offset;
1577 public:
1578 static Symbol* symbol();
1579 static void compute_offsets(InstanceKlass* k);
1580 static objArrayOop cache(InstanceKlass *k);
1581 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1582 };
1583
1584 class java_lang_Character_CharacterCache : AllStatic {
1585 private:
1586 static int _static_cache_offset;
1587 public:
1588 static Symbol* symbol();
1589 static void compute_offsets(InstanceKlass* k);
1590 static objArrayOop cache(InstanceKlass *k);
1591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1592 };
1593
1594 class java_lang_Short_ShortCache : AllStatic {
1595 private:
1596 static int _static_cache_offset;
1597 public:
1598 static Symbol* symbol();
1599 static void compute_offsets(InstanceKlass* k);
1600 static objArrayOop cache(InstanceKlass *k);
1601 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1602 };
1603
1604 class java_lang_Byte_ByteCache : AllStatic {
1605 private:
1606 static int _static_cache_offset;
1607 public:
1608 static Symbol* symbol();
1609 static void compute_offsets(InstanceKlass* k);
1610 static objArrayOop cache(InstanceKlass *k);
1611 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1612 };
1613
1614 // Use to declare fields that need to be injected into Java classes
1615 // for the JVM to use. The name_index and signature_index are
1616 // declared in vmSymbols. The may_be_java flag is used to declare
1617 // fields that might already exist in Java but should be injected if
1618 // they don't. Otherwise the field is unconditionally injected and
1619 // the JVM uses the injected one. This is to ensure that name
1620 // collisions don't occur. In general may_be_java should be false
1621 // unless there's a good reason.
1622
1623 class InjectedField {
1624 public:
1625 const SystemDictionary::WKID klass_id;
1626 const vmSymbols::SID name_index;
1627 const vmSymbols::SID signature_index;
1628 const bool may_be_java;
1629
1630
1631 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1632 Symbol* name() const { return lookup_symbol(name_index); }
1633 Symbol* signature() const { return lookup_symbol(signature_index); }
1634
1635 int compute_offset();
1636
1637 // Find the Symbol for this index
1638 static Symbol* lookup_symbol(int symbol_index) {
1639 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1640 }
1641 };
1642
1643 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1644 klass##_##name##_enum,
1645
1646 #define ALL_INJECTED_FIELDS(macro) \
1647 CLASS_INJECTED_FIELDS(macro) \
1648 CLASSLOADER_INJECTED_FIELDS(macro) \
1649 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1650 MEMBERNAME_INJECTED_FIELDS(macro) \
1651 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1652 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1653 MODULE_INJECTED_FIELDS(macro)
1654
1655 // Interface to hard-coded offset checking
1656
1657 class JavaClasses : AllStatic {
1658 private:
1659
1660 static InjectedField _injected_fields[];
1661
1662 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1663 public:
1664 enum InjectedFieldID {
1665 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1666 MAX_enum
1667 };
1668
1669 static int compute_injected_offset(InjectedFieldID id);
1670
1671 static void compute_hard_coded_offsets();
1672 static void compute_offsets();
1673 static void check_offsets() PRODUCT_RETURN;
1674 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1675 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1676 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1677 };
1678
1679 #undef DECLARE_INJECTED_FIELD_ENUM
1680
1681 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP