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 class RecordComponent;
34
35 // Interface for manipulating the basic Java classes.
36 //
37 // All dependencies on layout of actual Java classes should be kept here.
38 // If the layout of any of the classes above changes the offsets must be adjusted.
39 //
40 // For most classes we hardwire the offsets for performance reasons. In certain
41 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
42 // startup since the layout here differs between JDK1.2 and JDK1.3.
43 //
44 // Note that fields (static and non-static) are arranged with oops before non-oops
45 // on a per class basis. The offsets below have to reflect this ordering.
46 //
47 // When editing the layouts please update the check_offset verification code
48 // correspondingly. The names in the enums must be identical to the actual field
49 // names in order for the verification code to work.
50
51 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
52 f(java_lang_Class) \
53 f(java_lang_String) \
54 //end
55
56 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
57 f(java_lang_System) \
58 f(java_lang_ClassLoader) \
59 f(java_lang_Throwable) \
60 f(java_lang_Thread) \
61 f(java_lang_ThreadGroup) \
62 f(java_lang_AssertionStatusDirectives) \
63 f(java_lang_ref_SoftReference) \
64 f(java_lang_invoke_MethodHandle) \
65 f(java_lang_invoke_DirectMethodHandle) \
66 f(java_lang_invoke_MemberName) \
67 f(java_lang_invoke_ResolvedMethodName) \
68 f(java_lang_invoke_LambdaForm) \
69 f(java_lang_invoke_MethodType) \
70 f(java_lang_invoke_CallSite) \
71 f(java_lang_invoke_ConstantCallSite) \
72 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
73 f(java_security_AccessControlContext) \
74 f(java_lang_reflect_AccessibleObject) \
75 f(java_lang_reflect_Method) \
76 f(java_lang_reflect_Constructor) \
77 f(java_lang_reflect_Field) \
78 f(java_lang_reflect_RecordComponent) \
79 f(java_nio_Buffer) \
80 f(reflect_ConstantPool) \
81 f(reflect_UnsafeStaticFieldAccessorImpl) \
82 f(java_lang_reflect_Parameter) \
83 f(java_lang_Module) \
84 f(java_lang_StackTraceElement) \
85 f(java_lang_StackFrameInfo) \
86 f(java_lang_LiveStackFrameInfo) \
87 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
88 f(jdk_internal_misc_UnsafeConstants) \
89 //end
90
91 #define BASIC_JAVA_CLASSES_DO(f) \
92 BASIC_JAVA_CLASSES_DO_PART1(f) \
93 BASIC_JAVA_CLASSES_DO_PART2(f)
94
95 // Interface to java.lang.Object objects
96
97 class java_lang_Object : AllStatic {
98 public:
99 static void register_natives(TRAPS);
100 };
101
102 // Interface to java.lang.String objects
103
104 class java_lang_String : AllStatic {
105 private:
106 static int value_offset;
107 static int hash_offset;
108 static int hashIsZero_offset;
109 static int coder_offset;
110
111 static bool initialized;
112
113 static Handle basic_create(int length, bool byte_arr, TRAPS);
114
115 static inline void set_coder(oop string, jbyte coder);
116
117 public:
118
119 // Coders
120 enum Coder {
121 CODER_LATIN1 = 0,
122 CODER_UTF16 = 1
123 };
124
125 static void compute_offsets();
126 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
127
128 // Instance creation
129 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
130 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
131 static Handle create_from_str(const char* utf8_str, TRAPS);
132 static oop create_oop_from_str(const char* utf8_str, TRAPS);
133 static Handle create_from_symbol(Symbol* symbol, TRAPS);
134 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
135 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
136
137 static void set_compact_strings(bool value);
138
139 static int value_offset_in_bytes() {
140 assert(initialized && (value_offset > 0), "Must be initialized");
141 return value_offset;
142 }
143 static int hash_offset_in_bytes() {
144 assert(initialized && (hash_offset > 0), "Must be initialized");
145 return hash_offset;
146 }
147 static int hashIsZero_offset_in_bytes() {
148 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
149 return hashIsZero_offset;
150 }
151 static int coder_offset_in_bytes() {
152 assert(initialized && (coder_offset > 0), "Must be initialized");
153 return coder_offset;
154 }
155
156 static inline void set_value_raw(oop string, typeArrayOop buffer);
157 static inline void set_value(oop string, typeArrayOop buffer);
158
159 // Accessors
160 static inline typeArrayOop value(oop java_string);
161 static inline typeArrayOop value_no_keepalive(oop java_string);
162 static inline bool hash_is_set(oop string);
163 static inline bool is_latin1(oop java_string);
164 static inline int length(oop java_string);
165 static inline int length(oop java_string, typeArrayOop string_value);
166 static int utf8_length(oop java_string);
167 static int utf8_length(oop java_string, typeArrayOop string_value);
168
169 // String converters
170 static char* as_utf8_string(oop java_string);
171 static char* as_utf8_string(oop java_string, char* buf, int buflen);
172 static char* as_utf8_string(oop java_string, int start, int len);
173 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
174 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
175 static char* as_platform_dependent_str(Handle java_string, TRAPS);
176 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
177 // produce an ascii string with all other values quoted using \u####
178 static char* as_quoted_ascii(oop java_string);
179
180 // Compute the hash value for a java.lang.String object which would
181 // contain the characters passed in.
182 //
183 // As the hash value used by the String object itself, in
184 // String.hashCode(). This value is normally calculated in Java code
185 // in the String.hashCode method(), but is precomputed for String
186 // objects in the shared archive file.
187 // hash P(31) from Kernighan & Ritchie
188 //
189 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
190 static unsigned int hash_code(const jchar* s, int len) {
191 unsigned int h = 0;
192 while (len-- > 0) {
193 h = 31*h + (unsigned int) *s;
194 s++;
195 }
196 return h;
197 }
198
199 static unsigned int hash_code(const jbyte* s, int len) {
200 unsigned int h = 0;
201 while (len-- > 0) {
202 h = 31*h + (((unsigned int) *s) & 0xFF);
203 s++;
204 }
205 return h;
206 }
207
208 static unsigned int hash_code(oop java_string);
209
210 static bool equals(oop java_string, const jchar* chars, int len);
211 static bool equals(oop str1, oop str2);
212 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
213
214 // Conversion between '.' and '/' formats
215 static Handle externalize_classname(Handle java_string, TRAPS) {
216 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
217 }
218
219 // Conversion
220 static Symbol* as_symbol(oop java_string);
221 static Symbol* as_symbol_or_null(oop java_string);
222
223 // Testers
224 static bool is_instance(oop obj);
225 static inline bool is_instance_inlined(oop obj);
226
227 // Debugging
228 static void print(oop java_string, outputStream* st);
229 friend class JavaClasses;
230 friend class StringTable;
231 };
232
233
234 // Interface to java.lang.Class objects
235
236 #define CLASS_INJECTED_FIELDS(macro) \
237 macro(java_lang_Class, klass, intptr_signature, false) \
238 macro(java_lang_Class, array_klass, intptr_signature, false) \
239 macro(java_lang_Class, oop_size, int_signature, false) \
240 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
241 macro(java_lang_Class, protection_domain, object_signature, false) \
242 macro(java_lang_Class, signers, object_signature, false) \
243 macro(java_lang_Class, source_file, object_signature, false) \
244 macro(java_lang_Class, classData, object_signature, false)
245
246 class java_lang_Class : AllStatic {
247 friend class VMStructs;
248 friend class JVMCIVMStructs;
249
250 private:
251 // The fake offsets are added by the class loader when java.lang.Class is loaded
252
253 static int _klass_offset;
254 static int _array_klass_offset;
255
256 static int _oop_size_offset;
257 static int _static_oop_field_count_offset;
258
259 static int _protection_domain_offset;
260 static int _init_lock_offset;
261 static int _signers_offset;
262 static int _class_loader_offset;
263 static int _module_offset;
264 static int _component_mirror_offset;
265 static int _name_offset;
266 static int _source_file_offset;
267 static int _classData_offset;
268
269 static bool offsets_computed;
270 static int classRedefinedCount_offset;
271
272 static GrowableArray<Klass*>* _fixup_mirror_list;
273 static GrowableArray<Klass*>* _fixup_module_field_list;
274
275 static void set_init_lock(oop java_class, oop init_lock);
276 static void set_protection_domain(oop java_class, oop protection_domain);
277 static void set_class_loader(oop java_class, oop class_loader);
278 static void set_component_mirror(oop java_class, oop comp_mirror);
279 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
280 Handle classData, TRAPS);
281 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
282 public:
283 static void allocate_fixup_lists();
284 static void compute_offsets();
285
286 // Instance creation
287 static void create_mirror(Klass* k, Handle class_loader, Handle module,
288 Handle protection_domain, Handle classData, TRAPS);
289 static void fixup_mirror(Klass* k, TRAPS);
290 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
291 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
292 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
293
294 // Archiving
295 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
296 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
297 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
298 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
299 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
300 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
301 Handle protection_domain,
302 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
303
304 static void fixup_module_field(Klass* k, Handle module);
305
306 // Conversion
307 static Klass* as_Klass(oop java_class);
308 static Klass* as_Klass_raw(oop java_class);
309 static void set_klass(oop java_class, Klass* klass);
310 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
311 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
312 static void print_signature(oop java_class, outputStream *st);
313 static const char* as_external_name(oop java_class);
314 // Testing
315 static bool is_instance(oop obj);
316
317 static bool is_primitive(oop java_class);
318 static BasicType primitive_type(oop java_class);
319 static oop primitive_mirror(BasicType t);
320 // JVM_NewArray support
321 static Klass* array_klass_acquire(oop java_class);
322 static void release_set_array_klass(oop java_class, Klass* klass);
323 // compiler support for class operations
324 static int klass_offset_in_bytes() { return _klass_offset; }
325 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
326 // Support for classRedefinedCount field
327 static int classRedefinedCount(oop the_class_mirror);
328 static void set_classRedefinedCount(oop the_class_mirror, int value);
329
330 // Support for embedded per-class oops
331 static oop protection_domain(oop java_class);
332 static oop init_lock(oop java_class);
333 static oop component_mirror(oop java_class);
334 static objArrayOop signers(oop java_class);
335 static void set_signers(oop java_class, objArrayOop signers);
336 static oop class_data(oop java_class);
337 static void set_class_data(oop java_class, oop classData);
338
339 static oop class_loader(oop java_class);
340 static void set_module(oop java_class, oop module);
341 static oop module(oop java_class);
342
343 static oop name(Handle java_class, TRAPS);
344
345 static oop source_file(oop java_class);
346 static void set_source_file(oop java_class, oop source_file);
347
348 static int oop_size(oop java_class);
349 static int oop_size_raw(oop java_class);
350 static void set_oop_size(HeapWord* java_class, int size);
351 static int static_oop_field_count(oop java_class);
352 static int static_oop_field_count_raw(oop java_class);
353 static void set_static_oop_field_count(oop java_class, int size);
354
355 static GrowableArray<Klass*>* fixup_mirror_list() {
356 return _fixup_mirror_list;
357 }
358 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
359 _fixup_mirror_list = v;
360 }
361
362 static GrowableArray<Klass*>* fixup_module_field_list() {
363 return _fixup_module_field_list;
364 }
365 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
366 _fixup_module_field_list = v;
367 }
368
369 // Debugging
370 friend class JavaClasses;
371 friend class InstanceKlass; // verification code accesses offsets
372 friend class ClassFileParser; // access to number_of_fake_fields
373 };
374
375 // Interface to java.lang.Thread objects
376
377 class java_lang_Thread : AllStatic {
378 private:
379 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
380 // so we compute the offsets at startup rather than hard-wiring them.
381 static int _name_offset;
382 static int _group_offset;
383 static int _contextClassLoader_offset;
384 static int _inheritedAccessControlContext_offset;
385 static int _priority_offset;
386 static int _eetop_offset;
387 static int _interrupted_offset;
388 static int _daemon_offset;
389 static int _stillborn_offset;
390 static int _stackSize_offset;
391 static int _tid_offset;
392 static int _thread_status_offset;
393 static int _park_blocker_offset;
394
395 static void compute_offsets();
396
397 public:
398 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
399
400 // Instance creation
401 static oop create();
402 // Returns the JavaThread associated with the thread obj
403 static JavaThread* thread(oop java_thread);
404 // Set JavaThread for instance
405 static void set_thread(oop java_thread, JavaThread* thread);
406 // Interrupted status
407 static bool interrupted(oop java_thread);
408 static void set_interrupted(oop java_thread, bool val);
409 // Name
410 static oop name(oop java_thread);
411 static void set_name(oop java_thread, oop name);
412 // Priority
413 static ThreadPriority priority(oop java_thread);
414 static void set_priority(oop java_thread, ThreadPriority priority);
415 // Thread group
416 static oop threadGroup(oop java_thread);
417 // Stillborn
418 static bool is_stillborn(oop java_thread);
419 static void set_stillborn(oop java_thread);
420 // Alive (NOTE: this is not really a field, but provides the correct
421 // definition without doing a Java call)
422 static bool is_alive(oop java_thread);
423 // Daemon
424 static bool is_daemon(oop java_thread);
425 static void set_daemon(oop java_thread);
426 // Context ClassLoader
427 static oop context_class_loader(oop java_thread);
428 // Control context
429 static oop inherited_access_control_context(oop java_thread);
430 // Stack size hint
431 static jlong stackSize(oop java_thread);
432 // Thread ID
433 static jlong thread_id(oop java_thread);
434
435 // Blocker object responsible for thread parking
436 static oop park_blocker(oop java_thread);
437
438 // Java Thread Status for JVMTI and M&M use.
439 // This thread status info is saved in threadStatus field of
440 // java.lang.Thread java class.
441 enum ThreadStatus {
442 NEW = 0,
443 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
444 JVMTI_THREAD_STATE_RUNNABLE,
445 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
446 JVMTI_THREAD_STATE_WAITING +
447 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
448 JVMTI_THREAD_STATE_SLEEPING,
449 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
450 JVMTI_THREAD_STATE_WAITING +
451 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
452 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
453 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
454 JVMTI_THREAD_STATE_WAITING +
455 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
456 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
457 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
458 JVMTI_THREAD_STATE_WAITING +
459 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
460 JVMTI_THREAD_STATE_PARKED,
461 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
462 JVMTI_THREAD_STATE_WAITING +
463 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
464 JVMTI_THREAD_STATE_PARKED,
465 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
466 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
467 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
468 };
469 // Write thread status info to threadStatus field of java.lang.Thread.
470 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
471 // Read thread status info from threadStatus field of java.lang.Thread.
472 static ThreadStatus get_thread_status(oop java_thread_oop);
473
474 static const char* thread_status_name(oop java_thread_oop);
475
476 // Debugging
477 friend class JavaClasses;
478 };
479
480 // Interface to java.lang.ThreadGroup objects
481
482 class java_lang_ThreadGroup : AllStatic {
483 private:
484 static int _parent_offset;
485 static int _name_offset;
486 static int _threads_offset;
487 static int _groups_offset;
488 static int _maxPriority_offset;
489 static int _destroyed_offset;
490 static int _daemon_offset;
491 static int _nthreads_offset;
492 static int _ngroups_offset;
493
494 static void compute_offsets();
495
496 public:
497 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
498
499 // parent ThreadGroup
500 static oop parent(oop java_thread_group);
501 // name
502 static const char* name(oop java_thread_group);
503 // ("name as oop" accessor is not necessary)
504 // Number of threads in group
505 static int nthreads(oop java_thread_group);
506 // threads
507 static objArrayOop threads(oop java_thread_group);
508 // Number of threads in group
509 static int ngroups(oop java_thread_group);
510 // groups
511 static objArrayOop groups(oop java_thread_group);
512 // maxPriority in group
513 static ThreadPriority maxPriority(oop java_thread_group);
514 // Destroyed
515 static bool is_destroyed(oop java_thread_group);
516 // Daemon
517 static bool is_daemon(oop java_thread_group);
518 // Debugging
519 friend class JavaClasses;
520 };
521
522
523
524 // Interface to java.lang.Throwable objects
525
526 class java_lang_Throwable: AllStatic {
527 friend class BacktraceBuilder;
528 friend class BacktraceIterator;
529
530 private:
531 // Offsets
532 enum {
533 hc_backtrace_offset = 0,
534 hc_detailMessage_offset = 1,
535 hc_cause_offset = 2, // New since 1.4
536 hc_stackTrace_offset = 3 // New since 1.4
537 };
538 // Trace constants
539 enum {
540 trace_methods_offset = 0,
541 trace_bcis_offset = 1,
542 trace_mirrors_offset = 2,
543 trace_names_offset = 3,
544 trace_next_offset = 4,
545 trace_hidden_offset = 5,
546 trace_size = 6,
547 trace_chunk_size = 32
548 };
549
550 static int backtrace_offset;
551 static int detailMessage_offset;
552 static int stackTrace_offset;
553 static int depth_offset;
554 static int static_unassigned_stacktrace_offset;
555
556 // StackTrace (programmatic access, new since 1.4)
557 static void clear_stacktrace(oop throwable);
558 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
559 static void set_stacktrace(oop throwable, oop st_element_array);
560 static oop unassigned_stacktrace();
561
562 public:
563 // Backtrace
564 static oop backtrace(oop throwable);
565 static void set_backtrace(oop throwable, oop value);
566 static int depth(oop throwable);
567 static void set_depth(oop throwable, int value);
568 // Needed by JVMTI to filter out this internal field.
569 static int get_backtrace_offset() { return backtrace_offset;}
570 static int get_detailMessage_offset() { return detailMessage_offset;}
571 // Message
572 static oop message(oop throwable);
573 static void set_message(oop throwable, oop value);
574 static Symbol* detail_message(oop throwable);
575 static void print_stack_element(outputStream *st, Method* method, int bci);
576 static void print_stack_usage(Handle stream);
577
578 static void compute_offsets();
579 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
580
581 // Allocate space for backtrace (created but stack trace not filled in)
582 static void allocate_backtrace(Handle throwable, TRAPS);
583 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
584 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
585 // Fill in current stack trace, can cause GC
586 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
587 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
588 // Programmatic access to stack trace
589 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
590 // Printing
591 static void print(oop throwable, outputStream* st);
592 static void print_stack_trace(Handle throwable, outputStream* st);
593 static void java_printStackTrace(Handle throwable, TRAPS);
594 // Debugging
595 friend class JavaClasses;
596 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
597 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
598 };
599
600
601 // Interface to java.lang.reflect.AccessibleObject objects
602
603 class java_lang_reflect_AccessibleObject: AllStatic {
604 private:
605 // Note that to reduce dependencies on the JDK we compute these
606 // offsets at run-time.
607 static int override_offset;
608
609 static void compute_offsets();
610
611 public:
612 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
613
614 // Accessors
615 static jboolean override(oop reflect);
616 static void set_override(oop reflect, jboolean value);
617
618 // Debugging
619 friend class JavaClasses;
620 };
621
622
623 // Interface to java.lang.reflect.Method objects
624
625 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
626 private:
627 // Note that to reduce dependencies on the JDK we compute these
628 // offsets at run-time.
629 static int clazz_offset;
630 static int name_offset;
631 static int returnType_offset;
632 static int parameterTypes_offset;
633 static int exceptionTypes_offset;
634 static int slot_offset;
635 static int modifiers_offset;
636 static int signature_offset;
637 static int annotations_offset;
638 static int parameter_annotations_offset;
639 static int annotation_default_offset;
640
641 static void compute_offsets();
642 public:
643 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
644
645 // Allocation
646 static Handle create(TRAPS);
647
648 // Accessors
649 static oop clazz(oop reflect);
650 static void set_clazz(oop reflect, oop value);
651
652 static void set_name(oop method, oop value);
653
654 static oop return_type(oop method);
655 static void set_return_type(oop method, oop value);
656
657 static oop parameter_types(oop method);
658 static void set_parameter_types(oop method, oop value);
659
660 static int slot(oop reflect);
661 static void set_slot(oop reflect, int value);
662
663 static void set_exception_types(oop method, oop value);
664 static void set_modifiers(oop method, int value);
665 static void set_signature(oop method, oop value);
666 static void set_annotations(oop method, oop value);
667 static void set_parameter_annotations(oop method, oop value);
668 static void set_annotation_default(oop method, oop value);
669
670 // Debugging
671 friend class JavaClasses;
672 };
673
674
675 // Interface to java.lang.reflect.Constructor objects
676
677 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
678 private:
679 // Note that to reduce dependencies on the JDK we compute these
680 // offsets at run-time.
681 static int clazz_offset;
682 static int parameterTypes_offset;
683 static int exceptionTypes_offset;
684 static int slot_offset;
685 static int modifiers_offset;
686 static int signature_offset;
687 static int annotations_offset;
688 static int parameter_annotations_offset;
689
690 static void compute_offsets();
691 public:
692 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
693
694 // Allocation
695 static Handle create(TRAPS);
696
697 // Accessors
698 static oop clazz(oop reflect);
699 static void set_clazz(oop reflect, oop value);
700
701 static oop parameter_types(oop constructor);
702 static void set_parameter_types(oop constructor, oop value);
703
704 static int slot(oop reflect);
705 static void set_slot(oop reflect, int value);
706
707 static void set_exception_types(oop constructor, oop value);
708 static void set_modifiers(oop constructor, int value);
709 static void set_signature(oop constructor, oop value);
710 static void set_annotations(oop constructor, oop value);
711 static void set_parameter_annotations(oop method, oop value);
712
713 // Debugging
714 friend class JavaClasses;
715 };
716
717
718 // Interface to java.lang.reflect.Field objects
719
720 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
721 private:
722 // Note that to reduce dependencies on the JDK we compute these
723 // offsets at run-time.
724 static int clazz_offset;
725 static int name_offset;
726 static int type_offset;
727 static int slot_offset;
728 static int modifiers_offset;
729 static int signature_offset;
730 static int annotations_offset;
731
732 static void compute_offsets();
733
734 public:
735 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
736
737 // Allocation
738 static Handle create(TRAPS);
739
740 // Accessors
741 static oop clazz(oop reflect);
742 static void set_clazz(oop reflect, oop value);
743
744 static oop name(oop field);
745 static void set_name(oop field, oop value);
746
747 static oop type(oop field);
748 static void set_type(oop field, oop value);
749
750 static int slot(oop reflect);
751 static void set_slot(oop reflect, int value);
752
753 static int modifiers(oop field);
754 static void set_modifiers(oop field, int value);
755
756 static void set_signature(oop constructor, oop value);
757 static void set_annotations(oop constructor, oop value);
758 static void set_parameter_annotations(oop method, oop value);
759 static void set_annotation_default(oop method, oop value);
760
761 // Debugging
762 friend class JavaClasses;
763 };
764
765 class java_lang_reflect_Parameter {
766 private:
767 // Note that to reduce dependencies on the JDK we compute these
768 // offsets at run-time.
769 static int name_offset;
770 static int modifiers_offset;
771 static int index_offset;
772 static int executable_offset;
773
774 static void compute_offsets();
775
776 public:
777 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
778
779 // Allocation
780 static Handle create(TRAPS);
781
782 // Accessors
783 static oop name(oop field);
784 static void set_name(oop field, oop value);
785
786 static int index(oop reflect);
787 static void set_index(oop reflect, int value);
788
789 static int modifiers(oop reflect);
790 static void set_modifiers(oop reflect, int value);
791
792 static oop executable(oop constructor);
793 static void set_executable(oop constructor, oop value);
794
795 friend class JavaClasses;
796 };
797
798 #define MODULE_INJECTED_FIELDS(macro) \
799 macro(java_lang_Module, module_entry, intptr_signature, false)
800
801 class java_lang_Module {
802 private:
803 static int loader_offset;
804 static int name_offset;
805 static int _module_entry_offset;
806 static void compute_offsets();
807
808 public:
809 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
810
811 // Allocation
812 static Handle create(Handle loader, Handle module_name, TRAPS);
813
814 // Testers
815 static bool is_instance(oop obj);
816
817 // Accessors
818 static oop loader(oop module);
819 static void set_loader(oop module, oop value);
820
821 static oop name(oop module);
822 static void set_name(oop module, oop value);
823
824 static ModuleEntry* module_entry(oop module);
825 static void set_module_entry(oop module, ModuleEntry* module_entry);
826
827 friend class JavaClasses;
828 };
829
830 // Interface to jdk.internal.reflect.ConstantPool objects
831 class reflect_ConstantPool {
832 private:
833 // Note that to reduce dependencies on the JDK we compute these
834 // offsets at run-time.
835 static int _oop_offset;
836
837 static void compute_offsets();
838
839 public:
840 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
841
842 // Allocation
843 static Handle create(TRAPS);
844
845 // Accessors
846 static void set_cp(oop reflect, ConstantPool* value);
847 static int oop_offset() {
848 return _oop_offset;
849 }
850
851 static ConstantPool* get_cp(oop reflect);
852
853 // Debugging
854 friend class JavaClasses;
855 };
856
857 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
858 class reflect_UnsafeStaticFieldAccessorImpl {
859 private:
860 static int _base_offset;
861 static void compute_offsets();
862
863 public:
864 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
865
866 static int base_offset() {
867 return _base_offset;
868 }
869
870 // Debugging
871 friend class JavaClasses;
872 };
873
874 // Interface to java.lang primitive type boxing objects:
875 // - java.lang.Boolean
876 // - java.lang.Character
877 // - java.lang.Float
878 // - java.lang.Double
879 // - java.lang.Byte
880 // - java.lang.Short
881 // - java.lang.Integer
882 // - java.lang.Long
883
884 // This could be separated out into 8 individual classes.
885
886 class java_lang_boxing_object: AllStatic {
887 private:
888 enum {
889 hc_value_offset = 0
890 };
891 static int value_offset;
892 static int long_value_offset;
893
894 static oop initialize_and_allocate(BasicType type, TRAPS);
895 public:
896 // Allocation. Returns a boxed value, or NULL for invalid type.
897 static oop create(BasicType type, jvalue* value, TRAPS);
898 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
899 static BasicType get_value(oop box, jvalue* value);
900 static BasicType set_value(oop box, jvalue* value);
901 static BasicType basic_type(oop box);
902 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
903 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
904 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
905 static void print(BasicType type, jvalue* value, outputStream* st);
906
907 static int value_offset_in_bytes(BasicType type) {
908 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
909 value_offset;
910 }
911
912 // Debugging
913 friend class JavaClasses;
914 };
915
916
917
918 // Interface to java.lang.ref.Reference objects
919
920 class java_lang_ref_Reference: AllStatic {
921 public:
922 enum {
923 hc_referent_offset = 0,
924 hc_queue_offset = 1,
925 hc_next_offset = 2,
926 hc_discovered_offset = 3 // Is not last, see SoftRefs.
927 };
928
929 static int referent_offset;
930 static int queue_offset;
931 static int next_offset;
932 static int discovered_offset;
933
934 // Accessors
935 static inline oop referent(oop ref);
936 static inline void set_referent(oop ref, oop value);
937 static inline void set_referent_raw(oop ref, oop value);
938 static inline HeapWord* referent_addr_raw(oop ref);
939 static inline oop next(oop ref);
940 static inline void set_next(oop ref, oop value);
941 static inline void set_next_raw(oop ref, oop value);
942 static inline HeapWord* next_addr_raw(oop ref);
943 static inline oop discovered(oop ref);
944 static inline void set_discovered(oop ref, oop value);
945 static inline void set_discovered_raw(oop ref, oop value);
946 static inline HeapWord* discovered_addr_raw(oop ref);
947 static inline oop queue(oop ref);
948 static inline void set_queue(oop ref, oop value);
949 static bool is_referent_field(oop obj, ptrdiff_t offset);
950 static inline bool is_final(oop ref);
951 static inline bool is_phantom(oop ref);
952 };
953
954
955 // Interface to java.lang.ref.SoftReference objects
956
957 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
958 public:
959 static int timestamp_offset;
960 static int static_clock_offset;
961
962 // Accessors
963 static jlong timestamp(oop ref);
964
965 // Accessors for statics
966 static jlong clock();
967 static void set_clock(jlong value);
968
969 static void compute_offsets();
970 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
971 };
972
973 // Interface to java.lang.invoke.MethodHandle objects
974
975 class MethodHandleEntry;
976
977 class java_lang_invoke_MethodHandle: AllStatic {
978 friend class JavaClasses;
979
980 private:
981 static int _type_offset; // the MethodType of this MH
982 static int _form_offset; // the LambdaForm of this MH
983
984 static void compute_offsets();
985
986 public:
987 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
988
989 // Accessors
990 static oop type(oop mh);
991 static void set_type(oop mh, oop mtype);
992
993 static oop form(oop mh);
994 static void set_form(oop mh, oop lform);
995
996 // Testers
997 static bool is_subclass(Klass* klass) {
998 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
999 }
1000 static bool is_instance(oop obj);
1001
1002 // Accessors for code generation:
1003 static int type_offset_in_bytes() { return _type_offset; }
1004 static int form_offset_in_bytes() { return _form_offset; }
1005 };
1006
1007 // Interface to java.lang.invoke.DirectMethodHandle objects
1008
1009 class java_lang_invoke_DirectMethodHandle: AllStatic {
1010 friend class JavaClasses;
1011
1012 private:
1013 static int _member_offset; // the MemberName of this DMH
1014
1015 static void compute_offsets();
1016
1017 public:
1018 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1019
1020 // Accessors
1021 static oop member(oop mh);
1022
1023 // Testers
1024 static bool is_subclass(Klass* klass) {
1025 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1026 }
1027 static bool is_instance(oop obj);
1028
1029 // Accessors for code generation:
1030 static int member_offset_in_bytes() { return _member_offset; }
1031 };
1032
1033 // Interface to java.lang.invoke.LambdaForm objects
1034 // (These are a private interface for managing adapter code generation.)
1035
1036 class java_lang_invoke_LambdaForm: AllStatic {
1037 friend class JavaClasses;
1038
1039 private:
1040 static int _vmentry_offset; // type is MemberName
1041
1042 static void compute_offsets();
1043
1044 public:
1045 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1046
1047 // Accessors
1048 static oop vmentry(oop lform);
1049 static void set_vmentry(oop lform, oop invoker);
1050
1051 // Testers
1052 static bool is_subclass(Klass* klass) {
1053 return SystemDictionary::LambdaForm_klass() != NULL &&
1054 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1055 }
1056 static bool is_instance(oop obj);
1057
1058 // Accessors for code generation:
1059 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1060 };
1061
1062
1063 // Interface to java.lang.invoke.MemberName objects
1064 // (These are a private interface for Java code to query the class hierarchy.)
1065
1066 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1067 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1068 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1069
1070 class java_lang_invoke_ResolvedMethodName : AllStatic {
1071 friend class JavaClasses;
1072
1073 static int _vmtarget_offset;
1074 static int _vmholder_offset;
1075
1076 static void compute_offsets();
1077 public:
1078 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1079
1080 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1081
1082 static Method* vmtarget(oop resolved_method);
1083 static void set_vmtarget(oop resolved_method, Method* method);
1084
1085 static void set_vmholder(oop resolved_method, oop holder);
1086
1087 // find or create resolved member name
1088 static oop find_resolved_method(const methodHandle& m, TRAPS);
1089
1090 static bool is_instance(oop resolved_method);
1091 };
1092
1093
1094 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1095 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1096
1097
1098 class java_lang_invoke_MemberName: AllStatic {
1099 friend class JavaClasses;
1100
1101 private:
1102 // From java.lang.invoke.MemberName:
1103 // private Class<?> clazz; // class in which the method is defined
1104 // private String name; // may be null if not yet materialized
1105 // private Object type; // may be null if not yet materialized
1106 // private int flags; // modifier bits; see reflect.Modifier
1107 // private ResolvedMethodName method; // holds VM-specific target value
1108 // private intptr_t vmindex; // member index within class or interface
1109 static int _clazz_offset;
1110 static int _name_offset;
1111 static int _type_offset;
1112 static int _flags_offset;
1113 static int _method_offset;
1114 static int _vmindex_offset;
1115
1116 static void compute_offsets();
1117
1118 public:
1119 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1120 // Accessors
1121 static oop clazz(oop mname);
1122 static void set_clazz(oop mname, oop clazz);
1123
1124 static oop type(oop mname);
1125 static void set_type(oop mname, oop type);
1126
1127 static oop name(oop mname);
1128 static void set_name(oop mname, oop name);
1129
1130 static int flags(oop mname);
1131 static void set_flags(oop mname, int flags);
1132
1133 // Link through ResolvedMethodName field to get Method*
1134 static Method* vmtarget(oop mname);
1135 static void set_method(oop mname, oop method);
1136
1137 static intptr_t vmindex(oop mname);
1138 static void set_vmindex(oop mname, intptr_t index);
1139
1140 // Testers
1141 static bool is_subclass(Klass* klass) {
1142 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1143 }
1144 static bool is_instance(oop obj);
1145
1146 static bool is_method(oop obj);
1147
1148 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1149 enum {
1150 MN_IS_METHOD = 0x00010000, // method (not constructor)
1151 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1152 MN_IS_FIELD = 0x00040000, // field
1153 MN_IS_TYPE = 0x00080000, // nested type
1154 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1155 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1156 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1157 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1158 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1159 MN_SEARCH_INTERFACES = 0x00200000, // walk implemented interfaces
1160 MN_NESTMATE_CLASS = 0x00000001,
1161 MN_HIDDEN_CLASS = 0x00000002,
1162 MN_WEAK_CLASS = 0x00000004,
1163 MN_ACCESS_VM_ANNOTATIONS = 0x00100000
1164 };
1165
1166 // Accessors for code generation:
1167 static int clazz_offset_in_bytes() { return _clazz_offset; }
1168 static int type_offset_in_bytes() { return _type_offset; }
1169 static int name_offset_in_bytes() { return _name_offset; }
1170 static int flags_offset_in_bytes() { return _flags_offset; }
1171 static int method_offset_in_bytes() { return _method_offset; }
1172 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1173 };
1174
1175
1176 // Interface to java.lang.invoke.MethodType objects
1177
1178 class java_lang_invoke_MethodType: AllStatic {
1179 friend class JavaClasses;
1180
1181 private:
1182 static int _rtype_offset;
1183 static int _ptypes_offset;
1184
1185 static void compute_offsets();
1186
1187 public:
1188 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1189 // Accessors
1190 static oop rtype(oop mt);
1191 static objArrayOop ptypes(oop mt);
1192
1193 static oop ptype(oop mt, int index);
1194 static int ptype_count(oop mt);
1195
1196 static int ptype_slot_count(oop mt); // extra counts for long/double
1197 static int rtype_slot_count(oop mt); // extra counts for long/double
1198
1199 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1200 static void print_signature(oop mt, outputStream* st);
1201
1202 static bool is_instance(oop obj);
1203
1204 static bool equals(oop mt1, oop mt2);
1205
1206 // Accessors for code generation:
1207 static int rtype_offset_in_bytes() { return _rtype_offset; }
1208 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1209 };
1210
1211
1212 // Interface to java.lang.invoke.CallSite objects
1213
1214 class java_lang_invoke_CallSite: AllStatic {
1215 friend class JavaClasses;
1216
1217 private:
1218 static int _target_offset;
1219 static int _context_offset;
1220
1221 static void compute_offsets();
1222
1223 public:
1224 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1225 // Accessors
1226 static oop target( oop site);
1227 static void set_target( oop site, oop target);
1228 static void set_target_volatile( oop site, oop target);
1229
1230 static oop context_no_keepalive(oop site);
1231
1232 // Testers
1233 static bool is_subclass(Klass* klass) {
1234 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1235 }
1236 static bool is_instance(oop obj);
1237
1238 // Accessors for code generation:
1239 static int target_offset_in_bytes() { return _target_offset; }
1240 };
1241
1242 // Interface to java.lang.invoke.ConstantCallSite objects
1243
1244 class java_lang_invoke_ConstantCallSite: AllStatic {
1245 friend class JavaClasses;
1246
1247 private:
1248 static int _is_frozen_offset;
1249
1250 static void compute_offsets();
1251
1252 public:
1253 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1254 // Accessors
1255 static jboolean is_frozen(oop site);
1256
1257 // Testers
1258 static bool is_subclass(Klass* klass) {
1259 return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1260 }
1261 static bool is_instance(oop obj);
1262 };
1263
1264 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1265
1266 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1267 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1268 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1269
1270 class DependencyContext;
1271
1272 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1273 friend class JavaClasses;
1274
1275 private:
1276 static int _vmdependencies_offset;
1277 static int _last_cleanup_offset;
1278
1279 static void compute_offsets();
1280
1281 public:
1282 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1283 // Accessors
1284 static DependencyContext vmdependencies(oop context);
1285
1286 // Testers
1287 static bool is_subclass(Klass* klass) {
1288 return klass->is_subclass_of(SystemDictionary::Context_klass());
1289 }
1290 static bool is_instance(oop obj);
1291 };
1292
1293 // Interface to java.security.AccessControlContext objects
1294
1295 class java_security_AccessControlContext: AllStatic {
1296 private:
1297 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1298 // so we compute the offsets at startup rather than hard-wiring them.
1299 static int _context_offset;
1300 static int _privilegedContext_offset;
1301 static int _isPrivileged_offset;
1302 static int _isAuthorized_offset;
1303
1304 static void compute_offsets();
1305 public:
1306 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1307 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1308
1309 // Debugging/initialization
1310 friend class JavaClasses;
1311 };
1312
1313
1314 // Interface to java.lang.ClassLoader objects
1315
1316 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1317 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1318
1319 class java_lang_ClassLoader : AllStatic {
1320 private:
1321 static int _loader_data_offset;
1322 static bool offsets_computed;
1323 static int parent_offset;
1324 static int parallelCapable_offset;
1325 static int name_offset;
1326 static int nameAndId_offset;
1327 static int unnamedModule_offset;
1328
1329 public:
1330 static void compute_offsets();
1331 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1332
1333 static ClassLoaderData* loader_data_acquire(oop loader);
1334 static ClassLoaderData* loader_data_raw(oop loader);
1335 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1336
1337 static oop parent(oop loader);
1338 static oop name(oop loader);
1339 static oop nameAndId(oop loader);
1340 static bool isAncestor(oop loader, oop cl);
1341
1342 // Support for parallelCapable field
1343 static bool parallelCapable(oop the_class_mirror);
1344
1345 static bool is_trusted_loader(oop loader);
1346
1347 // Return true if this is one of the class loaders associated with
1348 // the generated bytecodes for reflection.
1349 static bool is_reflection_class_loader(oop loader);
1350
1351 // Fix for 4474172
1352 static oop non_reflection_class_loader(oop loader);
1353
1354 // Testers
1355 static bool is_subclass(Klass* klass) {
1356 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1357 }
1358 static bool is_instance(oop obj);
1359
1360 static oop unnamedModule(oop loader);
1361
1362 // Debugging
1363 friend class JavaClasses;
1364 friend class ClassFileParser; // access to number_of_fake_fields
1365 };
1366
1367
1368 // Interface to java.lang.System objects
1369
1370 class java_lang_System : AllStatic {
1371 private:
1372 static int static_in_offset;
1373 static int static_out_offset;
1374 static int static_err_offset;
1375 static int static_security_offset;
1376
1377 public:
1378 static int in_offset_in_bytes();
1379 static int out_offset_in_bytes();
1380 static int err_offset_in_bytes();
1381
1382 static void compute_offsets();
1383 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1384
1385 // Debugging
1386 friend class JavaClasses;
1387 };
1388
1389
1390 // Interface to java.lang.StackTraceElement objects
1391
1392 class java_lang_StackTraceElement: AllStatic {
1393 private:
1394 static int declaringClassObject_offset;
1395 static int classLoaderName_offset;
1396 static int moduleName_offset;
1397 static int moduleVersion_offset;
1398 static int declaringClass_offset;
1399 static int methodName_offset;
1400 static int fileName_offset;
1401 static int lineNumber_offset;
1402
1403 // Setters
1404 static void set_classLoaderName(oop element, oop value);
1405 static void set_moduleName(oop element, oop value);
1406 static void set_moduleVersion(oop element, oop value);
1407 static void set_declaringClass(oop element, oop value);
1408 static void set_methodName(oop element, oop value);
1409 static void set_fileName(oop element, oop value);
1410 static void set_lineNumber(oop element, int value);
1411 static void set_declaringClassObject(oop element, oop value);
1412
1413 static void decode_file_and_line(Handle java_mirror, InstanceKlass* holder, int version,
1414 const methodHandle& method, int bci,
1415 Symbol*& source, oop& source_file, int& line_number, TRAPS);
1416
1417 public:
1418 // Create an instance of StackTraceElement
1419 static oop create(const methodHandle& method, int bci, TRAPS);
1420
1421 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1422 int version, int bci, Symbol* name, TRAPS);
1423
1424 static void compute_offsets();
1425 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1426
1427 #if INCLUDE_JVMCI
1428 static void decode(const methodHandle& method, int bci, Symbol*& fileName, int& lineNumber, TRAPS);
1429 #endif
1430
1431 // Debugging
1432 friend class JavaClasses;
1433 };
1434
1435
1436 class Backtrace: AllStatic {
1437 public:
1438 // Helper backtrace functions to store bci|version together.
1439 static int merge_bci_and_version(int bci, int version);
1440 static int merge_mid_and_cpref(int mid, int cpref);
1441 static int bci_at(unsigned int merged);
1442 static int version_at(unsigned int merged);
1443 static int mid_at(unsigned int merged);
1444 static int cpref_at(unsigned int merged);
1445 static int get_line_number(Method* method, int bci);
1446 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1447
1448 // Debugging
1449 friend class JavaClasses;
1450 };
1451
1452 // Interface to java.lang.StackFrameInfo objects
1453
1454 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1455 macro(java_lang_StackFrameInfo, version, short_signature, false)
1456
1457 class java_lang_StackFrameInfo: AllStatic {
1458 private:
1459 static int _memberName_offset;
1460 static int _bci_offset;
1461 static int _version_offset;
1462
1463 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1464
1465 public:
1466 // Setters
1467 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1468 static void set_bci(oop info, int value);
1469
1470 static void set_version(oop info, short value);
1471
1472 static void compute_offsets();
1473 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1474
1475 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1476
1477 // Debugging
1478 friend class JavaClasses;
1479 };
1480
1481 class java_lang_LiveStackFrameInfo: AllStatic {
1482 private:
1483 static int _monitors_offset;
1484 static int _locals_offset;
1485 static int _operands_offset;
1486 static int _mode_offset;
1487
1488 public:
1489 static void set_monitors(oop info, oop value);
1490 static void set_locals(oop info, oop value);
1491 static void set_operands(oop info, oop value);
1492 static void set_mode(oop info, int value);
1493
1494 static void compute_offsets();
1495 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1496
1497 // Debugging
1498 friend class JavaClasses;
1499 };
1500
1501 // Interface to java.lang.reflect.RecordComponent objects
1502
1503 class java_lang_reflect_RecordComponent: AllStatic {
1504 private:
1505 static int clazz_offset;
1506 static int name_offset;
1507 static int type_offset;
1508 static int accessor_offset;
1509 static int signature_offset;
1510 static int annotations_offset;
1511 static int typeAnnotations_offset;
1512
1513 // Setters
1514 static void set_clazz(oop element, oop value);
1515 static void set_name(oop element, oop value);
1516 static void set_type(oop element, oop value);
1517 static void set_accessor(oop element, oop value);
1518 static void set_signature(oop element, oop value);
1519 static void set_annotations(oop element, oop value);
1520 static void set_typeAnnotations(oop element, oop value);
1521
1522 public:
1523 // Create an instance of RecordComponent
1524 static oop create(InstanceKlass* holder, RecordComponent* component, TRAPS);
1525
1526 static void compute_offsets();
1527 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1528
1529 // Debugging
1530 friend class JavaClasses;
1531 };
1532
1533
1534 // Interface to java.lang.AssertionStatusDirectives objects
1535
1536 class java_lang_AssertionStatusDirectives: AllStatic {
1537 private:
1538 static int classes_offset;
1539 static int classEnabled_offset;
1540 static int packages_offset;
1541 static int packageEnabled_offset;
1542 static int deflt_offset;
1543
1544 public:
1545 // Setters
1546 static void set_classes(oop obj, oop val);
1547 static void set_classEnabled(oop obj, oop val);
1548 static void set_packages(oop obj, oop val);
1549 static void set_packageEnabled(oop obj, oop val);
1550 static void set_deflt(oop obj, bool val);
1551
1552 static void compute_offsets();
1553 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1554
1555 // Debugging
1556 friend class JavaClasses;
1557 };
1558
1559
1560 class java_nio_Buffer: AllStatic {
1561 private:
1562 static int _limit_offset;
1563
1564 public:
1565 static int limit_offset();
1566 static void compute_offsets();
1567 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1568 };
1569
1570 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1571 private:
1572 static int _owner_offset;
1573 public:
1574 static void compute_offsets();
1575 static oop get_owner_threadObj(oop obj);
1576 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1577 };
1578
1579 // Interface to jdk.internal.misc.UnsafeConsants
1580
1581 class jdk_internal_misc_UnsafeConstants : AllStatic {
1582 public:
1583 static void set_unsafe_constants();
1584 static void compute_offsets() { }
1585 static void serialize_offsets(SerializeClosure* f) { }
1586 };
1587
1588 class java_lang_Integer : AllStatic {
1589 public:
1590 static jint value(oop obj);
1591 };
1592
1593 class java_lang_Long : AllStatic {
1594 public:
1595 static jlong value(oop obj);
1596 };
1597
1598 class java_lang_Character : AllStatic {
1599 public:
1600 static jchar value(oop obj);
1601 };
1602
1603 class java_lang_Short : AllStatic {
1604 public:
1605 static jshort value(oop obj);
1606 };
1607
1608 class java_lang_Byte : AllStatic {
1609 public:
1610 static jbyte value(oop obj);
1611 };
1612
1613 class java_lang_Boolean : AllStatic {
1614 private:
1615 static int _static_TRUE_offset;
1616 static int _static_FALSE_offset;
1617 public:
1618 static Symbol* symbol();
1619 static void compute_offsets(InstanceKlass* k);
1620 static oop get_TRUE(InstanceKlass *k);
1621 static oop get_FALSE(InstanceKlass *k);
1622 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1623 static jboolean value(oop obj);
1624 };
1625
1626 class java_lang_Integer_IntegerCache : AllStatic {
1627 private:
1628 static int _static_cache_offset;
1629 public:
1630 static Symbol* symbol();
1631 static void compute_offsets(InstanceKlass* k);
1632 static objArrayOop cache(InstanceKlass *k);
1633 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1634 };
1635
1636 class java_lang_Long_LongCache : AllStatic {
1637 private:
1638 static int _static_cache_offset;
1639 public:
1640 static Symbol* symbol();
1641 static void compute_offsets(InstanceKlass* k);
1642 static objArrayOop cache(InstanceKlass *k);
1643 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1644 };
1645
1646 class java_lang_Character_CharacterCache : AllStatic {
1647 private:
1648 static int _static_cache_offset;
1649 public:
1650 static Symbol* symbol();
1651 static void compute_offsets(InstanceKlass* k);
1652 static objArrayOop cache(InstanceKlass *k);
1653 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1654 };
1655
1656 class java_lang_Short_ShortCache : AllStatic {
1657 private:
1658 static int _static_cache_offset;
1659 public:
1660 static Symbol* symbol();
1661 static void compute_offsets(InstanceKlass* k);
1662 static objArrayOop cache(InstanceKlass *k);
1663 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1664 };
1665
1666 class java_lang_Byte_ByteCache : AllStatic {
1667 private:
1668 static int _static_cache_offset;
1669 public:
1670 static Symbol* symbol();
1671 static void compute_offsets(InstanceKlass* k);
1672 static objArrayOop cache(InstanceKlass *k);
1673 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1674 };
1675
1676 // Use to declare fields that need to be injected into Java classes
1677 // for the JVM to use. The name_index and signature_index are
1678 // declared in vmSymbols. The may_be_java flag is used to declare
1679 // fields that might already exist in Java but should be injected if
1680 // they don't. Otherwise the field is unconditionally injected and
1681 // the JVM uses the injected one. This is to ensure that name
1682 // collisions don't occur. In general may_be_java should be false
1683 // unless there's a good reason.
1684
1685 class InjectedField {
1686 public:
1687 const SystemDictionary::WKID klass_id;
1688 const vmSymbols::SID name_index;
1689 const vmSymbols::SID signature_index;
1690 const bool may_be_java;
1691
1692
1693 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1694 Symbol* name() const { return lookup_symbol(name_index); }
1695 Symbol* signature() const { return lookup_symbol(signature_index); }
1696
1697 int compute_offset();
1698
1699 // Find the Symbol for this index
1700 static Symbol* lookup_symbol(int symbol_index) {
1701 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1702 }
1703 };
1704
1705 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1706 klass##_##name##_enum,
1707
1708 #define ALL_INJECTED_FIELDS(macro) \
1709 CLASS_INJECTED_FIELDS(macro) \
1710 CLASSLOADER_INJECTED_FIELDS(macro) \
1711 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1712 MEMBERNAME_INJECTED_FIELDS(macro) \
1713 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1714 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1715 MODULE_INJECTED_FIELDS(macro)
1716
1717 // Interface to hard-coded offset checking
1718
1719 class JavaClasses : AllStatic {
1720 private:
1721
1722 static InjectedField _injected_fields[];
1723
1724 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1725 public:
1726 enum InjectedFieldID {
1727 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1728 MAX_enum
1729 };
1730
1731 static int compute_injected_offset(InjectedFieldID id);
1732
1733 static void compute_hard_coded_offsets();
1734 static void compute_offsets();
1735 static void check_offsets() PRODUCT_RETURN;
1736 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1737 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1738 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1739 };
1740
1741 #undef DECLARE_INJECTED_FIELD_ENUM
1742
1743 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP