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