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