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