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