1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 f(jdk_internal_misc_UnsafeConstants) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.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
251 static bool offsets_computed;
252 static int classRedefinedCount_offset;
253
254 static GrowableArray<Klass*>* _fixup_mirror_list;
255 static GrowableArray<Klass*>* _fixup_module_field_list;
256
257 static void set_init_lock(oop java_class, oop init_lock);
258 static void set_protection_domain(oop java_class, oop protection_domain);
259 static void set_class_loader(oop java_class, oop class_loader);
260 static void set_component_mirror(oop java_class, oop comp_mirror);
261 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
262 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
263 public:
264 static void allocate_fixup_lists();
265 static void compute_offsets();
266
267 // Instance creation
268 static void create_mirror(Klass* k, Handle class_loader, Handle module,
269 Handle protection_domain, TRAPS);
270 static void fixup_mirror(Klass* k, TRAPS);
271 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
272
273 // Archiving
274 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
275 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
276 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
277 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
278 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
279 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
280 Handle protection_domain,
281 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
282
283 static void fixup_module_field(Klass* k, Handle module);
284
285 // Conversion
286 static Klass* as_Klass(oop java_class);
287 static Klass* as_Klass_raw(oop java_class);
288 static void set_klass(oop java_class, Klass* klass);
289 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
290 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
291 static void print_signature(oop java_class, outputStream *st);
292 static const char* as_external_name(oop java_class);
293 // Testing
294 static bool is_instance(oop obj);
295
296 static bool is_primitive(oop java_class);
297 static BasicType primitive_type(oop java_class);
298 static oop primitive_mirror(BasicType t);
299 // JVM_NewArray support
300 static Klass* array_klass_acquire(oop java_class);
301 static void release_set_array_klass(oop java_class, Klass* klass);
302 // compiler support for class operations
303 static int klass_offset_in_bytes() { return _klass_offset; }
304 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
305 // Support for classRedefinedCount field
306 static int classRedefinedCount(oop the_class_mirror);
307 static void set_classRedefinedCount(oop the_class_mirror, int value);
308
309 // Support for embedded per-class oops
310 static oop protection_domain(oop java_class);
311 static oop init_lock(oop java_class);
312 static oop component_mirror(oop java_class);
313 static objArrayOop signers(oop java_class);
314 static void set_signers(oop java_class, objArrayOop signers);
315
316 static oop class_loader(oop java_class);
317 static void set_module(oop java_class, oop module);
318 static oop module(oop java_class);
319
320 static oop name(Handle java_class, TRAPS);
321
322 static oop source_file(oop java_class);
323 static void set_source_file(oop java_class, oop source_file);
324
325 static int oop_size(oop java_class);
326 static int oop_size_raw(oop java_class);
327 static void set_oop_size(HeapWord* java_class, int size);
328 static int static_oop_field_count(oop java_class);
329 static int static_oop_field_count_raw(oop java_class);
330 static void set_static_oop_field_count(oop java_class, int size);
331
332 static GrowableArray<Klass*>* fixup_mirror_list() {
333 return _fixup_mirror_list;
334 }
335 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
336 _fixup_mirror_list = v;
337 }
338
339 static GrowableArray<Klass*>* fixup_module_field_list() {
340 return _fixup_module_field_list;
341 }
342 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
343 _fixup_module_field_list = v;
344 }
345
346 // Debugging
347 friend class JavaClasses;
348 friend class InstanceKlass; // verification code accesses offsets
349 friend class ClassFileParser; // access to number_of_fake_fields
350 };
351
352 // Interface to java.lang.Thread objects
353
354 class java_lang_Thread : AllStatic {
355 private:
356 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
357 // so we compute the offsets at startup rather than hard-wiring them.
358 static int _name_offset;
359 static int _group_offset;
360 static int _contextClassLoader_offset;
361 static int _inheritedAccessControlContext_offset;
362 static int _priority_offset;
363 static int _eetop_offset;
364 static int _daemon_offset;
365 static int _stillborn_offset;
366 static int _stackSize_offset;
367 static int _tid_offset;
368 static int _thread_status_offset;
369 static int _park_blocker_offset;
370 static int _park_event_offset ;
371
372 static void compute_offsets();
373
374 public:
375 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
376
377 // Instance creation
378 static oop create();
379 // Returns the JavaThread associated with the thread obj
380 static JavaThread* thread(oop java_thread);
381 // Set JavaThread for instance
382 static void set_thread(oop java_thread, JavaThread* thread);
383 // Name
384 static oop name(oop java_thread);
385 static void set_name(oop java_thread, oop name);
386 // Priority
387 static ThreadPriority priority(oop java_thread);
388 static void set_priority(oop java_thread, ThreadPriority priority);
389 // Thread group
390 static oop threadGroup(oop java_thread);
391 // Stillborn
392 static bool is_stillborn(oop java_thread);
393 static void set_stillborn(oop java_thread);
394 // Alive (NOTE: this is not really a field, but provides the correct
395 // definition without doing a Java call)
396 static bool is_alive(oop java_thread);
397 // Daemon
398 static bool is_daemon(oop java_thread);
399 static void set_daemon(oop java_thread);
400 // Context ClassLoader
401 static oop context_class_loader(oop java_thread);
402 // Control context
403 static oop inherited_access_control_context(oop java_thread);
404 // Stack size hint
405 static jlong stackSize(oop java_thread);
406 // Thread ID
407 static jlong thread_id(oop java_thread);
408
409 // Blocker object responsible for thread parking
410 static oop park_blocker(oop java_thread);
411
412 // Pointer to type-stable park handler, encoded as jlong.
413 // Should be set when apparently null
414 // For details, see unsafe.cpp Unsafe_Unpark
415 static jlong park_event(oop java_thread);
416 static bool set_park_event(oop java_thread, jlong ptr);
417
418 // Java Thread Status for JVMTI and M&M use.
419 // This thread status info is saved in threadStatus field of
420 // java.lang.Thread java class.
421 enum ThreadStatus {
422 NEW = 0,
423 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
424 JVMTI_THREAD_STATE_RUNNABLE,
425 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
426 JVMTI_THREAD_STATE_WAITING +
427 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
428 JVMTI_THREAD_STATE_SLEEPING,
429 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
430 JVMTI_THREAD_STATE_WAITING +
431 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
432 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
433 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
434 JVMTI_THREAD_STATE_WAITING +
435 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
436 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
437 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
438 JVMTI_THREAD_STATE_WAITING +
439 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
440 JVMTI_THREAD_STATE_PARKED,
441 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
442 JVMTI_THREAD_STATE_WAITING +
443 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
444 JVMTI_THREAD_STATE_PARKED,
445 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
446 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
447 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
448 };
449 // Write thread status info to threadStatus field of java.lang.Thread.
450 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
451 // Read thread status info from threadStatus field of java.lang.Thread.
452 static ThreadStatus get_thread_status(oop java_thread_oop);
453
454 static const char* thread_status_name(oop java_thread_oop);
455
456 // Debugging
457 friend class JavaClasses;
458 };
459
460 // Interface to java.lang.ThreadGroup objects
461
462 class java_lang_ThreadGroup : AllStatic {
463 private:
464 static int _parent_offset;
465 static int _name_offset;
466 static int _threads_offset;
467 static int _groups_offset;
468 static int _maxPriority_offset;
469 static int _destroyed_offset;
470 static int _daemon_offset;
471 static int _nthreads_offset;
472 static int _ngroups_offset;
473
474 static void compute_offsets();
475
476 public:
477 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
478
479 // parent ThreadGroup
480 static oop parent(oop java_thread_group);
481 // name
482 static const char* name(oop java_thread_group);
483 // ("name as oop" accessor is not necessary)
484 // Number of threads in group
485 static int nthreads(oop java_thread_group);
486 // threads
487 static objArrayOop threads(oop java_thread_group);
488 // Number of threads in group
489 static int ngroups(oop java_thread_group);
490 // groups
491 static objArrayOop groups(oop java_thread_group);
492 // maxPriority in group
493 static ThreadPriority maxPriority(oop java_thread_group);
494 // Destroyed
495 static bool is_destroyed(oop java_thread_group);
496 // Daemon
497 static bool is_daemon(oop java_thread_group);
498 // Debugging
499 friend class JavaClasses;
500 };
501
502
503
504 // Interface to java.lang.Throwable objects
505
506 class java_lang_Throwable: AllStatic {
507 friend class BacktraceBuilder;
508 friend class BacktraceIterator;
509
510 private:
511 // Offsets
512 enum {
513 hc_backtrace_offset = 0,
514 hc_detailMessage_offset = 1,
515 hc_cause_offset = 2, // New since 1.4
516 hc_stackTrace_offset = 3 // New since 1.4
517 };
518 // Trace constants
519 enum {
520 trace_methods_offset = 0,
521 trace_bcis_offset = 1,
522 trace_mirrors_offset = 2,
523 trace_names_offset = 3,
524 trace_next_offset = 4,
525 trace_size = 5,
526 trace_chunk_size = 32
527 };
528
529 static int backtrace_offset;
530 static int detailMessage_offset;
531 static int stackTrace_offset;
532 static int depth_offset;
533 static int static_unassigned_stacktrace_offset;
534
535 // StackTrace (programmatic access, new since 1.4)
536 static void clear_stacktrace(oop throwable);
537 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
538 static void set_stacktrace(oop throwable, oop st_element_array);
539 static oop unassigned_stacktrace();
540
541 public:
542 // Backtrace
543 static oop backtrace(oop throwable);
544 static void set_backtrace(oop throwable, oop value);
545 static int depth(oop throwable);
546 static void set_depth(oop throwable, int value);
547 // Needed by JVMTI to filter out this internal field.
548 static int get_backtrace_offset() { return backtrace_offset;}
549 static int get_detailMessage_offset() { return detailMessage_offset;}
550 // Message
551 static oop message(oop throwable);
552 static void set_message(oop throwable, oop value);
553 static Symbol* detail_message(oop throwable);
554 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
555 static void print_stack_usage(Handle stream);
556
557 static void compute_offsets();
558 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
559
560 // Allocate space for backtrace (created but stack trace not filled in)
561 static void allocate_backtrace(Handle throwable, TRAPS);
562 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
563 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
564 // Fill in current stack trace, can cause GC
565 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
566 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
567 // Programmatic access to stack trace
568 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
569 // Printing
570 static void print(oop throwable, outputStream* st);
571 static void print_stack_trace(Handle throwable, outputStream* st);
572 static void java_printStackTrace(Handle throwable, TRAPS);
573 // Debugging
574 friend class JavaClasses;
575 };
576
577
578 // Interface to java.lang.reflect.AccessibleObject objects
579
580 class java_lang_reflect_AccessibleObject: AllStatic {
581 private:
582 // Note that to reduce dependencies on the JDK we compute these
583 // offsets at run-time.
584 static int override_offset;
585
586 static void compute_offsets();
587
588 public:
589 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
590
591 // Accessors
592 static jboolean override(oop reflect);
593 static void set_override(oop reflect, jboolean value);
594
595 // Debugging
596 friend class JavaClasses;
597 };
598
599
600 // Interface to java.lang.reflect.Method objects
601
602 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
603 private:
604 // Note that to reduce dependencies on the JDK we compute these
605 // offsets at run-time.
606 static int clazz_offset;
607 static int name_offset;
608 static int returnType_offset;
609 static int parameterTypes_offset;
610 static int exceptionTypes_offset;
611 static int slot_offset;
612 static int modifiers_offset;
613 static int signature_offset;
614 static int annotations_offset;
615 static int parameter_annotations_offset;
616 static int annotation_default_offset;
617
618 static void compute_offsets();
619 public:
620 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
621
622 // Allocation
623 static Handle create(TRAPS);
624
625 // Accessors
626 static oop clazz(oop reflect);
627 static void set_clazz(oop reflect, oop value);
628
629 static void set_name(oop method, oop value);
630
631 static oop return_type(oop method);
632 static void set_return_type(oop method, oop value);
633
634 static oop parameter_types(oop method);
635 static void set_parameter_types(oop method, oop value);
636
637 static int slot(oop reflect);
638 static void set_slot(oop reflect, int value);
639
640 static void set_exception_types(oop method, oop value);
641 static void set_modifiers(oop method, int value);
642 static void set_signature(oop method, oop value);
643 static void set_annotations(oop method, oop value);
644 static void set_parameter_annotations(oop method, oop value);
645 static void set_annotation_default(oop method, oop value);
646
647 // Debugging
648 friend class JavaClasses;
649 };
650
651
652 // Interface to java.lang.reflect.Constructor objects
653
654 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
655 private:
656 // Note that to reduce dependencies on the JDK we compute these
657 // offsets at run-time.
658 static int clazz_offset;
659 static int parameterTypes_offset;
660 static int exceptionTypes_offset;
661 static int slot_offset;
662 static int modifiers_offset;
663 static int signature_offset;
664 static int annotations_offset;
665 static int parameter_annotations_offset;
666
667 static void compute_offsets();
668 public:
669 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
670
671 // Allocation
672 static Handle create(TRAPS);
673
674 // Accessors
675 static oop clazz(oop reflect);
676 static void set_clazz(oop reflect, oop value);
677
678 static oop parameter_types(oop constructor);
679 static void set_parameter_types(oop constructor, oop value);
680
681 static int slot(oop reflect);
682 static void set_slot(oop reflect, int value);
683
684 static void set_exception_types(oop constructor, oop value);
685 static void set_modifiers(oop constructor, int value);
686 static void set_signature(oop constructor, oop value);
687 static void set_annotations(oop constructor, oop value);
688 static void set_parameter_annotations(oop method, oop value);
689
690 // Debugging
691 friend class JavaClasses;
692 };
693
694
695 // Interface to java.lang.reflect.Field objects
696
697 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
698 private:
699 // Note that to reduce dependencies on the JDK we compute these
700 // offsets at run-time.
701 static int clazz_offset;
702 static int name_offset;
703 static int type_offset;
704 static int slot_offset;
705 static int modifiers_offset;
706 static int signature_offset;
707 static int annotations_offset;
708
709 static void compute_offsets();
710
711 public:
712 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
713
714 // Allocation
715 static Handle create(TRAPS);
716
717 // Accessors
718 static oop clazz(oop reflect);
719 static void set_clazz(oop reflect, oop value);
720
721 static oop name(oop field);
722 static void set_name(oop field, oop value);
723
724 static oop type(oop field);
725 static void set_type(oop field, oop value);
726
727 static int slot(oop reflect);
728 static void set_slot(oop reflect, int value);
729
730 static int modifiers(oop field);
731 static void set_modifiers(oop field, int value);
732
733 static void set_signature(oop constructor, oop value);
734 static void set_annotations(oop constructor, oop value);
735 static void set_parameter_annotations(oop method, oop value);
736 static void set_annotation_default(oop method, oop value);
737
738 // Debugging
739 friend class JavaClasses;
740 };
741
742 class java_lang_reflect_Parameter {
743 private:
744 // Note that to reduce dependencies on the JDK we compute these
745 // offsets at run-time.
746 static int name_offset;
747 static int modifiers_offset;
748 static int index_offset;
749 static int executable_offset;
750
751 static void compute_offsets();
752
753 public:
754 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
755
756 // Allocation
757 static Handle create(TRAPS);
758
759 // Accessors
760 static oop name(oop field);
761 static void set_name(oop field, oop value);
762
763 static int index(oop reflect);
764 static void set_index(oop reflect, int value);
765
766 static int modifiers(oop reflect);
767 static void set_modifiers(oop reflect, int value);
768
769 static oop executable(oop constructor);
770 static void set_executable(oop constructor, oop value);
771
772 friend class JavaClasses;
773 };
774
775 #define MODULE_INJECTED_FIELDS(macro) \
776 macro(java_lang_Module, module_entry, intptr_signature, false)
777
778 class java_lang_Module {
779 private:
780 static int loader_offset;
781 static int name_offset;
782 static int _module_entry_offset;
783 static void compute_offsets();
784
785 public:
786 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
787
788 // Allocation
789 static Handle create(Handle loader, Handle module_name, TRAPS);
790
791 // Testers
792 static bool is_instance(oop obj);
793
794 // Accessors
795 static oop loader(oop module);
796 static void set_loader(oop module, oop value);
797
798 static oop name(oop module);
799 static void set_name(oop module, oop value);
800
801 static ModuleEntry* module_entry(oop module);
802 static void set_module_entry(oop module, ModuleEntry* module_entry);
803
804 friend class JavaClasses;
805 };
806
807 // Interface to jdk.internal.reflect.ConstantPool objects
808 class reflect_ConstantPool {
809 private:
810 // Note that to reduce dependencies on the JDK we compute these
811 // offsets at run-time.
812 static int _oop_offset;
813
814 static void compute_offsets();
815
816 public:
817 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
818
819 // Allocation
820 static Handle create(TRAPS);
821
822 // Accessors
823 static void set_cp(oop reflect, ConstantPool* value);
824 static int oop_offset() {
825 return _oop_offset;
826 }
827
828 static ConstantPool* get_cp(oop reflect);
829
830 // Debugging
831 friend class JavaClasses;
832 };
833
834 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
835 class reflect_UnsafeStaticFieldAccessorImpl {
836 private:
837 static int _base_offset;
838 static void compute_offsets();
839
840 public:
841 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
842
843 static int base_offset() {
844 return _base_offset;
845 }
846
847 // Debugging
848 friend class JavaClasses;
849 };
850
851 // Interface to java.lang primitive type boxing objects:
852 // - java.lang.Boolean
853 // - java.lang.Character
854 // - java.lang.Float
855 // - java.lang.Double
856 // - java.lang.Byte
857 // - java.lang.Short
858 // - java.lang.Integer
859 // - java.lang.Long
860
861 // This could be separated out into 8 individual classes.
862
863 class java_lang_boxing_object: AllStatic {
864 private:
865 enum {
866 hc_value_offset = 0
867 };
868 static int value_offset;
869 static int long_value_offset;
870
871 static oop initialize_and_allocate(BasicType type, TRAPS);
872 public:
873 // Allocation. Returns a boxed value, or NULL for invalid type.
874 static oop create(BasicType type, jvalue* value, TRAPS);
875 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
876 static BasicType get_value(oop box, jvalue* value);
877 static BasicType set_value(oop box, jvalue* value);
878 static BasicType basic_type(oop box);
879 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
880 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
881 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
882 static void print(BasicType type, jvalue* value, outputStream* st);
883
884 static int value_offset_in_bytes(BasicType type) {
885 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
886 value_offset;
887 }
888
889 // Debugging
890 friend class JavaClasses;
891 };
892
893
894
895 // Interface to java.lang.ref.Reference objects
896
897 class java_lang_ref_Reference: AllStatic {
898 public:
899 enum {
900 hc_referent_offset = 0,
901 hc_queue_offset = 1,
902 hc_next_offset = 2,
903 hc_discovered_offset = 3 // Is not last, see SoftRefs.
904 };
905
906 static int referent_offset;
907 static int queue_offset;
908 static int next_offset;
909 static int discovered_offset;
910
911 // Accessors
912 static inline oop referent(oop ref);
913 static inline void set_referent(oop ref, oop value);
914 static inline void set_referent_raw(oop ref, oop value);
915 static inline HeapWord* referent_addr_raw(oop ref);
916 static inline oop next(oop ref);
917 static inline void set_next(oop ref, oop value);
918 static inline void set_next_raw(oop ref, oop value);
919 static inline HeapWord* next_addr_raw(oop ref);
920 static inline oop discovered(oop ref);
921 static inline void set_discovered(oop ref, oop value);
922 static inline void set_discovered_raw(oop ref, oop value);
923 static inline HeapWord* discovered_addr_raw(oop ref);
924 static inline oop queue(oop ref);
925 static inline void set_queue(oop ref, oop value);
926 static bool is_referent_field(oop obj, ptrdiff_t offset);
927 static inline bool is_final(oop ref);
928 static inline bool is_phantom(oop ref);
929 };
930
931
932 // Interface to java.lang.ref.SoftReference objects
933
934 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
935 public:
936 static int timestamp_offset;
937 static int static_clock_offset;
938
939 // Accessors
940 static jlong timestamp(oop ref);
941
942 // Accessors for statics
943 static jlong clock();
944 static void set_clock(jlong value);
945
946 static void compute_offsets();
947 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
948 };
949
950 // Interface to java.lang.invoke.MethodHandle objects
951
952 class MethodHandleEntry;
953
954 class java_lang_invoke_MethodHandle: AllStatic {
955 friend class JavaClasses;
956
957 private:
958 static int _type_offset; // the MethodType of this MH
959 static int _form_offset; // the LambdaForm of this MH
960
961 static void compute_offsets();
962
963 public:
964 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
965
966 // Accessors
967 static oop type(oop mh);
968 static void set_type(oop mh, oop mtype);
969
970 static oop form(oop mh);
971 static void set_form(oop mh, oop lform);
972
973 // Testers
974 static bool is_subclass(Klass* klass) {
975 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
976 }
977 static bool is_instance(oop obj);
978
979 // Accessors for code generation:
980 static int type_offset_in_bytes() { return _type_offset; }
981 static int form_offset_in_bytes() { return _form_offset; }
982 };
983
984 // Interface to java.lang.invoke.DirectMethodHandle objects
985
986 class java_lang_invoke_DirectMethodHandle: AllStatic {
987 friend class JavaClasses;
988
989 private:
990 static int _member_offset; // the MemberName of this DMH
991
992 static void compute_offsets();
993
994 public:
995 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
996
997 // Accessors
998 static oop member(oop mh);
999
1000 // Testers
1001 static bool is_subclass(Klass* klass) {
1002 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1003 }
1004 static bool is_instance(oop obj);
1005
1006 // Accessors for code generation:
1007 static int member_offset_in_bytes() { return _member_offset; }
1008 };
1009
1010 // Interface to java.lang.invoke.LambdaForm objects
1011 // (These are a private interface for managing adapter code generation.)
1012
1013 class java_lang_invoke_LambdaForm: AllStatic {
1014 friend class JavaClasses;
1015
1016 private:
1017 static int _vmentry_offset; // type is MemberName
1018
1019 static void compute_offsets();
1020
1021 public:
1022 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1023
1024 // Accessors
1025 static oop vmentry(oop lform);
1026 static void set_vmentry(oop lform, oop invoker);
1027
1028 // Testers
1029 static bool is_subclass(Klass* klass) {
1030 return SystemDictionary::LambdaForm_klass() != NULL &&
1031 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1032 }
1033 static bool is_instance(oop obj);
1034
1035 // Accessors for code generation:
1036 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1037 };
1038
1039
1040 // Interface to java.lang.invoke.MemberName objects
1041 // (These are a private interface for Java code to query the class hierarchy.)
1042
1043 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1044 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1045 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1046
1047 class java_lang_invoke_ResolvedMethodName : AllStatic {
1048 friend class JavaClasses;
1049
1050 static int _vmtarget_offset;
1051 static int _vmholder_offset;
1052
1053 static void compute_offsets();
1054 public:
1055 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1056
1057 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1058
1059 static Method* vmtarget(oop resolved_method);
1060 static void set_vmtarget(oop resolved_method, Method* method);
1061
1062 // find or create resolved member name
1063 static oop find_resolved_method(const methodHandle& m, TRAPS);
1064
1065 static bool is_instance(oop resolved_method);
1066 };
1067
1068
1069 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1070 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1071
1072
1073 class java_lang_invoke_MemberName: AllStatic {
1074 friend class JavaClasses;
1075
1076 private:
1077 // From java.lang.invoke.MemberName:
1078 // private Class<?> clazz; // class in which the method is defined
1079 // private String name; // may be null if not yet materialized
1080 // private Object type; // may be null if not yet materialized
1081 // private int flags; // modifier bits; see reflect.Modifier
1082 // private ResolvedMethodName method; // holds VM-specific target value
1083 // private intptr_t vmindex; // member index within class or interface
1084 static int _clazz_offset;
1085 static int _name_offset;
1086 static int _type_offset;
1087 static int _flags_offset;
1088 static int _method_offset;
1089 static int _vmindex_offset;
1090
1091 static void compute_offsets();
1092
1093 public:
1094 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1095 // Accessors
1096 static oop clazz(oop mname);
1097 static void set_clazz(oop mname, oop clazz);
1098
1099 static oop type(oop mname);
1100 static void set_type(oop mname, oop type);
1101
1102 static oop name(oop mname);
1103 static void set_name(oop mname, oop name);
1104
1105 static int flags(oop mname);
1106 static void set_flags(oop mname, int flags);
1107
1108 // Link through ResolvedMethodName field to get Method*
1109 static Method* vmtarget(oop mname);
1110 static void set_method(oop mname, oop method);
1111
1112 static intptr_t vmindex(oop mname);
1113 static void set_vmindex(oop mname, intptr_t index);
1114
1115 // Testers
1116 static bool is_subclass(Klass* klass) {
1117 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1118 }
1119 static bool is_instance(oop obj);
1120
1121 static bool is_method(oop obj);
1122
1123 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1124 enum {
1125 MN_IS_METHOD = 0x00010000, // method (not constructor)
1126 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1127 MN_IS_FIELD = 0x00040000, // field
1128 MN_IS_TYPE = 0x00080000, // nested type
1129 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1130 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1131 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1132 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1133 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1134 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1135 };
1136
1137 // Accessors for code generation:
1138 static int clazz_offset_in_bytes() { return _clazz_offset; }
1139 static int type_offset_in_bytes() { return _type_offset; }
1140 static int name_offset_in_bytes() { return _name_offset; }
1141 static int flags_offset_in_bytes() { return _flags_offset; }
1142 static int method_offset_in_bytes() { return _method_offset; }
1143 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1144 };
1145
1146
1147 // Interface to java.lang.invoke.MethodType objects
1148
1149 class java_lang_invoke_MethodType: AllStatic {
1150 friend class JavaClasses;
1151
1152 private:
1153 static int _rtype_offset;
1154 static int _ptypes_offset;
1155
1156 static void compute_offsets();
1157
1158 public:
1159 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1160 // Accessors
1161 static oop rtype(oop mt);
1162 static objArrayOop ptypes(oop mt);
1163
1164 static oop ptype(oop mt, int index);
1165 static int ptype_count(oop mt);
1166
1167 static int ptype_slot_count(oop mt); // extra counts for long/double
1168 static int rtype_slot_count(oop mt); // extra counts for long/double
1169
1170 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1171 static void print_signature(oop mt, outputStream* st);
1172
1173 static bool is_instance(oop obj);
1174
1175 static bool equals(oop mt1, oop mt2);
1176
1177 // Accessors for code generation:
1178 static int rtype_offset_in_bytes() { return _rtype_offset; }
1179 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1180 };
1181
1182
1183 // Interface to java.lang.invoke.CallSite objects
1184
1185 class java_lang_invoke_CallSite: AllStatic {
1186 friend class JavaClasses;
1187
1188 private:
1189 static int _target_offset;
1190 static int _context_offset;
1191
1192 static void compute_offsets();
1193
1194 public:
1195 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1196 // Accessors
1197 static oop target( oop site);
1198 static void set_target( oop site, oop target);
1199 static void set_target_volatile( oop site, oop target);
1200
1201 static oop context_no_keepalive(oop site);
1202
1203 // Testers
1204 static bool is_subclass(Klass* klass) {
1205 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1206 }
1207 static bool is_instance(oop obj);
1208
1209 // Accessors for code generation:
1210 static int target_offset_in_bytes() { return _target_offset; }
1211 };
1212
1213 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1214
1215 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1217 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1218
1219 class DependencyContext;
1220
1221 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1222 friend class JavaClasses;
1223
1224 private:
1225 static int _vmdependencies_offset;
1226 static int _last_cleanup_offset;
1227
1228 static void compute_offsets();
1229
1230 public:
1231 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1232 // Accessors
1233 static DependencyContext vmdependencies(oop context);
1234
1235 // Testers
1236 static bool is_subclass(Klass* klass) {
1237 return klass->is_subclass_of(SystemDictionary::Context_klass());
1238 }
1239 static bool is_instance(oop obj);
1240 };
1241
1242 // Interface to java.security.AccessControlContext objects
1243
1244 class java_security_AccessControlContext: AllStatic {
1245 private:
1246 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1247 // so we compute the offsets at startup rather than hard-wiring them.
1248 static int _context_offset;
1249 static int _privilegedContext_offset;
1250 static int _isPrivileged_offset;
1251 static int _isAuthorized_offset;
1252
1253 static void compute_offsets();
1254 public:
1255 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1256 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1257
1258 // Debugging/initialization
1259 friend class JavaClasses;
1260 };
1261
1262
1263 // Interface to java.lang.ClassLoader objects
1264
1265 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1266 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1267
1268 class java_lang_ClassLoader : AllStatic {
1269 private:
1270 static int _loader_data_offset;
1271 static bool offsets_computed;
1272 static int parent_offset;
1273 static int parallelCapable_offset;
1274 static int name_offset;
1275 static int nameAndId_offset;
1276 static int unnamedModule_offset;
1277
1278 public:
1279 static void compute_offsets();
1280 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1281
1282 static ClassLoaderData* loader_data_acquire(oop loader);
1283 static ClassLoaderData* loader_data_raw(oop loader);
1284 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1285
1286 static oop parent(oop loader);
1287 static oop name(oop loader);
1288 static oop nameAndId(oop loader);
1289 static bool isAncestor(oop loader, oop cl);
1290
1291 // Support for parallelCapable field
1292 static bool parallelCapable(oop the_class_mirror);
1293
1294 static bool is_trusted_loader(oop loader);
1295
1296 // Return true if this is one of the class loaders associated with
1297 // the generated bytecodes for reflection.
1298 static bool is_reflection_class_loader(oop loader);
1299
1300 // Fix for 4474172
1301 static oop non_reflection_class_loader(oop loader);
1302
1303 // Testers
1304 static bool is_subclass(Klass* klass) {
1305 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1306 }
1307 static bool is_instance(oop obj);
1308
1309 static oop unnamedModule(oop loader);
1310
1311 // Debugging
1312 friend class JavaClasses;
1313 friend class ClassFileParser; // access to number_of_fake_fields
1314 };
1315
1316
1317 // Interface to java.lang.System objects
1318
1319 class java_lang_System : AllStatic {
1320 private:
1321 static int static_in_offset;
1322 static int static_out_offset;
1323 static int static_err_offset;
1324 static int static_security_offset;
1325
1326 public:
1327 static int in_offset_in_bytes();
1328 static int out_offset_in_bytes();
1329 static int err_offset_in_bytes();
1330
1331 static void compute_offsets();
1332 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1333
1334 // Debugging
1335 friend class JavaClasses;
1336 };
1337
1338
1339 // Interface to java.lang.StackTraceElement objects
1340
1341 class java_lang_StackTraceElement: AllStatic {
1342 private:
1343 static int declaringClassObject_offset;
1344 static int classLoaderName_offset;
1345 static int moduleName_offset;
1346 static int moduleVersion_offset;
1347 static int declaringClass_offset;
1348 static int methodName_offset;
1349 static int fileName_offset;
1350 static int lineNumber_offset;
1351
1352 // Setters
1353 static void set_classLoaderName(oop element, oop value);
1354 static void set_moduleName(oop element, oop value);
1355 static void set_moduleVersion(oop element, oop value);
1356 static void set_declaringClass(oop element, oop value);
1357 static void set_methodName(oop element, oop value);
1358 static void set_fileName(oop element, oop value);
1359 static void set_lineNumber(oop element, int value);
1360 static void set_declaringClassObject(oop element, oop value);
1361
1362 public:
1363 // Create an instance of StackTraceElement
1364 static oop create(const methodHandle& method, int bci, TRAPS);
1365
1366 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1367 int version, int bci, Symbol* name, TRAPS);
1368
1369 static void compute_offsets();
1370 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1371
1372 // Debugging
1373 friend class JavaClasses;
1374 };
1375
1376
1377 class Backtrace: AllStatic {
1378 public:
1379 // Helper backtrace functions to store bci|version together.
1380 static int merge_bci_and_version(int bci, int version);
1381 static int merge_mid_and_cpref(int mid, int cpref);
1382 static int bci_at(unsigned int merged);
1383 static int version_at(unsigned int merged);
1384 static int mid_at(unsigned int merged);
1385 static int cpref_at(unsigned int merged);
1386 static int get_line_number(const methodHandle& method, int bci);
1387 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1388
1389 // Debugging
1390 friend class JavaClasses;
1391 };
1392
1393 // Interface to java.lang.StackFrameInfo objects
1394
1395 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1396 macro(java_lang_StackFrameInfo, version, short_signature, false)
1397
1398 class java_lang_StackFrameInfo: AllStatic {
1399 private:
1400 static int _memberName_offset;
1401 static int _bci_offset;
1402 static int _version_offset;
1403
1404 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1405
1406 public:
1407 // Setters
1408 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1409 static void set_bci(oop info, int value);
1410
1411 static void set_version(oop info, short value);
1412
1413 static void compute_offsets();
1414 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1415
1416 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1417
1418 // Debugging
1419 friend class JavaClasses;
1420 };
1421
1422 class java_lang_LiveStackFrameInfo: AllStatic {
1423 private:
1424 static int _monitors_offset;
1425 static int _locals_offset;
1426 static int _operands_offset;
1427 static int _mode_offset;
1428
1429 public:
1430 static void set_monitors(oop info, oop value);
1431 static void set_locals(oop info, oop value);
1432 static void set_operands(oop info, oop value);
1433 static void set_mode(oop info, int value);
1434
1435 static void compute_offsets();
1436 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1437
1438 // Debugging
1439 friend class JavaClasses;
1440 };
1441
1442 // Interface to java.lang.AssertionStatusDirectives objects
1443
1444 class java_lang_AssertionStatusDirectives: AllStatic {
1445 private:
1446 static int classes_offset;
1447 static int classEnabled_offset;
1448 static int packages_offset;
1449 static int packageEnabled_offset;
1450 static int deflt_offset;
1451
1452 public:
1453 // Setters
1454 static void set_classes(oop obj, oop val);
1455 static void set_classEnabled(oop obj, oop val);
1456 static void set_packages(oop obj, oop val);
1457 static void set_packageEnabled(oop obj, oop val);
1458 static void set_deflt(oop obj, bool val);
1459
1460 static void compute_offsets();
1461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1462
1463 // Debugging
1464 friend class JavaClasses;
1465 };
1466
1467
1468 class java_nio_Buffer: AllStatic {
1469 private:
1470 static int _limit_offset;
1471
1472 public:
1473 static int limit_offset();
1474 static void compute_offsets();
1475 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1476 };
1477
1478 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1479 private:
1480 static int _owner_offset;
1481 public:
1482 static void compute_offsets();
1483 static oop get_owner_threadObj(oop obj);
1484 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1485 };
1486
1487 // Interface to jdk.internal.misc.UnsafeConsants
1488
1489 class jdk_internal_misc_UnsafeConstants : AllStatic {
1490 public:
1491 static void set_unsafe_constants();
1492 static void compute_offsets() { }
1493 static void serialize_offsets(SerializeClosure* f) { }
1494 };
1495
1496 // Use to declare fields that need to be injected into Java classes
1497 // for the JVM to use. The name_index and signature_index are
1498 // declared in vmSymbols. The may_be_java flag is used to declare
1499 // fields that might already exist in Java but should be injected if
1500 // they don't. Otherwise the field is unconditionally injected and
1501 // the JVM uses the injected one. This is to ensure that name
1502 // collisions don't occur. In general may_be_java should be false
1503 // unless there's a good reason.
1504
1505 class InjectedField {
1506 public:
1507 const SystemDictionary::WKID klass_id;
1508 const vmSymbols::SID name_index;
1509 const vmSymbols::SID signature_index;
1510 const bool may_be_java;
1511
1512
1513 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1514 Symbol* name() const { return lookup_symbol(name_index); }
1515 Symbol* signature() const { return lookup_symbol(signature_index); }
1516
1517 int compute_offset();
1518
1519 // Find the Symbol for this index
1520 static Symbol* lookup_symbol(int symbol_index) {
1521 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1522 }
1523 };
1524
1525 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1526 klass##_##name##_enum,
1527
1528 #define ALL_INJECTED_FIELDS(macro) \
1529 CLASS_INJECTED_FIELDS(macro) \
1530 CLASSLOADER_INJECTED_FIELDS(macro) \
1531 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1532 MEMBERNAME_INJECTED_FIELDS(macro) \
1533 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1534 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1535 MODULE_INJECTED_FIELDS(macro)
1536
1537 // Interface to hard-coded offset checking
1538
1539 class JavaClasses : AllStatic {
1540 private:
1541
1542 static InjectedField _injected_fields[];
1543
1544 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1545 public:
1546 enum InjectedFieldID {
1547 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1548 MAX_enum
1549 };
1550
1551 static int compute_injected_offset(InjectedFieldID id);
1552
1553 static void compute_hard_coded_offsets();
1554 static void compute_offsets();
1555 static void check_offsets() PRODUCT_RETURN;
1556 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1557 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1558 };
1559
1560 #undef DECLARE_INJECTED_FIELD_ENUM
1561
1562 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP