1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(java_lang_ThreadGroup) \
61 f(java_lang_AssertionStatusDirectives) \
62 f(java_lang_ref_SoftReference) \
63 f(java_lang_invoke_MethodHandle) \
64 f(java_lang_invoke_DirectMethodHandle) \
65 f(java_lang_invoke_MemberName) \
66 f(java_lang_invoke_ResolvedMethodName) \
67 f(java_lang_invoke_LambdaForm) \
68 f(java_lang_invoke_MethodType) \
69 f(java_lang_invoke_CallSite) \
70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
71 f(java_security_AccessControlContext) \
72 f(java_lang_reflect_AccessibleObject) \
73 f(java_lang_reflect_Method) \
74 f(java_lang_reflect_Constructor) \
75 f(java_lang_reflect_Field) \
76 f(java_nio_Buffer) \
77 f(reflect_ConstantPool) \
78 f(reflect_UnsafeStaticFieldAccessorImpl) \
79 f(java_lang_reflect_Parameter) \
80 f(java_lang_Module) \
81 f(java_lang_StackTraceElement) \
82 f(java_lang_StackFrameInfo) \
83 f(java_lang_LiveStackFrameInfo) \
84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int coder_offset;
98
99 static bool initialized;
100
101 static Handle basic_create(int length, bool byte_arr, TRAPS);
102
103 static inline void set_coder(oop string, jbyte coder);
104
105 public:
106
107 // Coders
108 enum Coder {
109 CODER_LATIN1 = 0,
110 CODER_UTF16 = 1
111 };
112
113 static void compute_offsets();
114 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
115
116 // Instance creation
117 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
118 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
119 static Handle create_from_str(const char* utf8_str, TRAPS);
120 static oop create_oop_from_str(const char* utf8_str, TRAPS);
121 static Handle create_from_symbol(Symbol* symbol, TRAPS);
122 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
123 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
124
125 static void set_compact_strings(bool value);
126
127 static int value_offset_in_bytes() {
128 assert(initialized && (value_offset > 0), "Must be initialized");
129 return value_offset;
130 }
131 static int hash_offset_in_bytes() {
132 assert(initialized && (hash_offset > 0), "Must be initialized");
133 return hash_offset;
134 }
135 static int coder_offset_in_bytes() {
136 assert(initialized && (coder_offset > 0), "Must be initialized");
137 return coder_offset;
138 }
139
140 static inline void set_value_raw(oop string, typeArrayOop buffer);
141 static inline void set_value(oop string, typeArrayOop buffer);
142 static inline void set_hash(oop string, unsigned int hash);
143
144 // Accessors
145 static inline typeArrayOop value(oop java_string);
146 static inline typeArrayOop value_no_keepalive(oop java_string);
147 static inline unsigned int hash(oop java_string);
148 static inline bool is_latin1(oop java_string);
149 static inline int length(oop java_string);
150 static inline int length(oop java_string, typeArrayOop string_value);
151 static int utf8_length(oop java_string);
152 static int utf8_length(oop java_string, typeArrayOop string_value);
153
154 // String converters
155 static char* as_utf8_string(oop java_string);
156 static char* as_utf8_string(oop java_string, char* buf, int buflen);
157 static char* as_utf8_string(oop java_string, int start, int len);
158 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
159 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
160 static char* as_platform_dependent_str(Handle java_string, TRAPS);
161 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
162 // produce an ascii string with all other values quoted using \u####
163 static char* as_quoted_ascii(oop java_string);
164
165 // Compute the hash value for a java.lang.String object which would
166 // contain the characters passed in.
167 //
168 // As the hash value used by the String object itself, in
169 // String.hashCode(). This value is normally calculated in Java code
170 // in the String.hashCode method(), but is precomputed for String
171 // objects in the shared archive file.
172 // hash P(31) from Kernighan & Ritchie
173 //
174 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
175 static unsigned int hash_code(const jchar* s, int len) {
176 unsigned int h = 0;
177 while (len-- > 0) {
178 h = 31*h + (unsigned int) *s;
179 s++;
180 }
181 return h;
182 }
183
184 static unsigned int hash_code(const jbyte* s, int len) {
185 unsigned int h = 0;
186 while (len-- > 0) {
187 h = 31*h + (((unsigned int) *s) & 0xFF);
188 s++;
189 }
190 return h;
191 }
192
193 static unsigned int hash_code(oop java_string);
194
195 static bool equals(oop java_string, const jchar* chars, int len);
196 static bool equals(oop str1, oop str2);
197
198 // Conversion between '.' and '/' formats
199 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
200 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
201
202 // Conversion
203 static Symbol* as_symbol(oop java_string, TRAPS);
204 static Symbol* as_symbol_or_null(oop java_string);
205
206 // Testers
207 static bool is_instance(oop obj);
208 static inline bool is_instance_inlined(oop obj);
209
210 // Debugging
211 static void print(oop java_string, outputStream* st);
212 friend class JavaClasses;
213 friend class StringTable;
214 };
215
216
217 // Interface to java.lang.Class objects
218
219 #define CLASS_INJECTED_FIELDS(macro) \
220 macro(java_lang_Class, klass, intptr_signature, false) \
221 macro(java_lang_Class, array_klass, intptr_signature, false) \
222 macro(java_lang_Class, oop_size, int_signature, false) \
223 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
224 macro(java_lang_Class, protection_domain, object_signature, false) \
225 macro(java_lang_Class, signers, object_signature, false) \
226 macro(java_lang_Class, source_file, object_signature, false) \
227
228 class java_lang_Class : AllStatic {
229 friend class VMStructs;
230 friend class JVMCIVMStructs;
231
232 private:
233 // The fake offsets are added by the class loader when java.lang.Class is loaded
234
235 static int _klass_offset;
236 static int _array_klass_offset;
237
238 static int _oop_size_offset;
239 static int _static_oop_field_count_offset;
240
241 static int _protection_domain_offset;
242 static int _init_lock_offset;
243 static int _signers_offset;
244 static int _class_loader_offset;
245 static int _module_offset;
246 static int _component_mirror_offset;
247 static int _name_offset;
248 static int _source_file_offset;
249 static int _box_mirror_offset;
250 static int _value_mirror_offset;
251
252 static bool offsets_computed;
253 static int classRedefinedCount_offset;
254
255 static GrowableArray<Klass*>* _fixup_mirror_list;
256 static GrowableArray<Klass*>* _fixup_module_field_list;
257
258 static void set_init_lock(oop java_class, oop init_lock);
259 static void set_protection_domain(oop java_class, oop protection_domain);
260 static void set_class_loader(oop java_class, oop class_loader);
261 static void set_component_mirror(oop java_class, oop comp_mirror);
262 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
263 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
264 public:
265 static void allocate_fixup_lists();
266 static void compute_offsets();
267
268 // Instance creation
269 static void create_mirror(Klass* k, Handle class_loader, Handle module,
270 Handle protection_domain, TRAPS);
271 static void fixup_mirror(Klass* k, TRAPS);
272 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
273 static oop create_value_mirror(Klass* k, Handle mirror, TRAPS);
274
275 // Archiving
276 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
277 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
278 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
279 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
280 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
281 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
282 Handle protection_domain,
283 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
284
285 static void fixup_module_field(Klass* k, Handle module);
286
287 // Conversion
288 static Klass* as_Klass(oop java_class);
289 static Klass* as_Klass_raw(oop java_class);
290 static void set_klass(oop java_class, Klass* klass);
291 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
292 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
293 static void print_signature(oop java_class, outputStream *st);
294 static const char* as_external_name(oop java_class);
295 // Testing
296 static bool is_instance(oop obj);
297
298 static bool is_primitive(oop java_class);
299 static BasicType primitive_type(oop java_class);
300 static oop primitive_mirror(BasicType t);
301 // JVM_NewArray support
302 static Klass* array_klass_acquire(oop java_class);
303 static void release_set_array_klass(oop java_class, Klass* klass);
304 // compiler support for class operations
305 static int klass_offset_in_bytes() { return _klass_offset; }
306 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
307 // Support for classRedefinedCount field
308 static int classRedefinedCount(oop the_class_mirror);
309 static void set_classRedefinedCount(oop the_class_mirror, int value);
310
311 // Support for embedded per-class oops
312 static oop protection_domain(oop java_class);
313 static oop init_lock(oop java_class);
314 static oop component_mirror(oop java_class);
315 static objArrayOop signers(oop java_class);
316 static void set_signers(oop java_class, objArrayOop signers);
317
318 static oop class_loader(oop java_class);
319 static void set_module(oop java_class, oop module);
320 static oop module(oop java_class);
321
322 static void set_box_mirror(oop java_class, oop mirror);
323 static oop box_mirror(oop java_class);
324 static void set_value_mirror(oop java_class, oop mirror);
325 static oop value_mirror(oop java_class);
326
327 static oop name(Handle java_class, TRAPS);
328
329 static oop source_file(oop java_class);
330 static void set_source_file(oop java_class, oop source_file);
331
332 static int oop_size(oop java_class);
333 static int oop_size_raw(oop java_class);
334 static void set_oop_size(HeapWord* java_class, int size);
335 static int static_oop_field_count(oop java_class);
336 static int static_oop_field_count_raw(oop java_class);
337 static void set_static_oop_field_count(oop java_class, int size);
338
339 static GrowableArray<Klass*>* fixup_mirror_list() {
340 return _fixup_mirror_list;
341 }
342 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
343 _fixup_mirror_list = v;
344 }
345
346 static GrowableArray<Klass*>* fixup_module_field_list() {
347 return _fixup_module_field_list;
348 }
349 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
350 _fixup_module_field_list = v;
351 }
352
353 // Debugging
354 friend class JavaClasses;
355 friend class InstanceKlass; // verification code accesses offsets
356 friend class ClassFileParser; // access to number_of_fake_fields
357 };
358
359 // Interface to java.lang.Thread objects
360
361 class java_lang_Thread : AllStatic {
362 private:
363 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
364 // so we compute the offsets at startup rather than hard-wiring them.
365 static int _name_offset;
366 static int _group_offset;
367 static int _contextClassLoader_offset;
368 static int _inheritedAccessControlContext_offset;
369 static int _priority_offset;
370 static int _eetop_offset;
371 static int _daemon_offset;
372 static int _stillborn_offset;
373 static int _stackSize_offset;
374 static int _tid_offset;
375 static int _thread_status_offset;
376 static int _park_blocker_offset;
377 static int _park_event_offset ;
378
379 static void compute_offsets();
380
381 public:
382 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
383
384 // Instance creation
385 static oop create();
386 // Returns the JavaThread associated with the thread obj
387 static JavaThread* thread(oop java_thread);
388 // Set JavaThread for instance
389 static void set_thread(oop java_thread, JavaThread* thread);
390 // Name
391 static oop name(oop java_thread);
392 static void set_name(oop java_thread, oop name);
393 // Priority
394 static ThreadPriority priority(oop java_thread);
395 static void set_priority(oop java_thread, ThreadPriority priority);
396 // Thread group
397 static oop threadGroup(oop java_thread);
398 // Stillborn
399 static bool is_stillborn(oop java_thread);
400 static void set_stillborn(oop java_thread);
401 // Alive (NOTE: this is not really a field, but provides the correct
402 // definition without doing a Java call)
403 static bool is_alive(oop java_thread);
404 // Daemon
405 static bool is_daemon(oop java_thread);
406 static void set_daemon(oop java_thread);
407 // Context ClassLoader
408 static oop context_class_loader(oop java_thread);
409 // Control context
410 static oop inherited_access_control_context(oop java_thread);
411 // Stack size hint
412 static jlong stackSize(oop java_thread);
413 // Thread ID
414 static jlong thread_id(oop java_thread);
415
416 // Blocker object responsible for thread parking
417 static oop park_blocker(oop java_thread);
418
419 // Pointer to type-stable park handler, encoded as jlong.
420 // Should be set when apparently null
421 // For details, see unsafe.cpp Unsafe_Unpark
422 static jlong park_event(oop java_thread);
423 static bool set_park_event(oop java_thread, jlong ptr);
424
425 // Java Thread Status for JVMTI and M&M use.
426 // This thread status info is saved in threadStatus field of
427 // java.lang.Thread java class.
428 enum ThreadStatus {
429 NEW = 0,
430 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
431 JVMTI_THREAD_STATE_RUNNABLE,
432 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
433 JVMTI_THREAD_STATE_WAITING +
434 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
435 JVMTI_THREAD_STATE_SLEEPING,
436 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
437 JVMTI_THREAD_STATE_WAITING +
438 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
439 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
440 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
441 JVMTI_THREAD_STATE_WAITING +
442 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
443 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
444 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
445 JVMTI_THREAD_STATE_WAITING +
446 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
447 JVMTI_THREAD_STATE_PARKED,
448 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
449 JVMTI_THREAD_STATE_WAITING +
450 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
451 JVMTI_THREAD_STATE_PARKED,
452 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
453 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
454 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
455 };
456 // Write thread status info to threadStatus field of java.lang.Thread.
457 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
458 // Read thread status info from threadStatus field of java.lang.Thread.
459 static ThreadStatus get_thread_status(oop java_thread_oop);
460
461 static const char* thread_status_name(oop java_thread_oop);
462
463 // Debugging
464 friend class JavaClasses;
465 };
466
467 // Interface to java.lang.ThreadGroup objects
468
469 class java_lang_ThreadGroup : AllStatic {
470 private:
471 static int _parent_offset;
472 static int _name_offset;
473 static int _threads_offset;
474 static int _groups_offset;
475 static int _maxPriority_offset;
476 static int _destroyed_offset;
477 static int _daemon_offset;
478 static int _nthreads_offset;
479 static int _ngroups_offset;
480
481 static void compute_offsets();
482
483 public:
484 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
485
486 // parent ThreadGroup
487 static oop parent(oop java_thread_group);
488 // name
489 static const char* name(oop java_thread_group);
490 // ("name as oop" accessor is not necessary)
491 // Number of threads in group
492 static int nthreads(oop java_thread_group);
493 // threads
494 static objArrayOop threads(oop java_thread_group);
495 // Number of threads in group
496 static int ngroups(oop java_thread_group);
497 // groups
498 static objArrayOop groups(oop java_thread_group);
499 // maxPriority in group
500 static ThreadPriority maxPriority(oop java_thread_group);
501 // Destroyed
502 static bool is_destroyed(oop java_thread_group);
503 // Daemon
504 static bool is_daemon(oop java_thread_group);
505 // Debugging
506 friend class JavaClasses;
507 };
508
509
510
511 // Interface to java.lang.Throwable objects
512
513 class java_lang_Throwable: AllStatic {
514 friend class BacktraceBuilder;
515 friend class BacktraceIterator;
516
517 private:
518 // Offsets
519 enum {
520 hc_backtrace_offset = 0,
521 hc_detailMessage_offset = 1,
522 hc_cause_offset = 2, // New since 1.4
523 hc_stackTrace_offset = 3 // New since 1.4
524 };
525 // Trace constants
526 enum {
527 trace_methods_offset = 0,
528 trace_bcis_offset = 1,
529 trace_mirrors_offset = 2,
530 trace_names_offset = 3,
531 trace_next_offset = 4,
532 trace_size = 5,
533 trace_chunk_size = 32
534 };
535
536 static int backtrace_offset;
537 static int detailMessage_offset;
538 static int stackTrace_offset;
539 static int depth_offset;
540 static int static_unassigned_stacktrace_offset;
541
542 // StackTrace (programmatic access, new since 1.4)
543 static void clear_stacktrace(oop throwable);
544 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
545 static void set_stacktrace(oop throwable, oop st_element_array);
546 static oop unassigned_stacktrace();
547
548 public:
549 // Backtrace
550 static oop backtrace(oop throwable);
551 static void set_backtrace(oop throwable, oop value);
552 static int depth(oop throwable);
553 static void set_depth(oop throwable, int value);
554 // Needed by JVMTI to filter out this internal field.
555 static int get_backtrace_offset() { return backtrace_offset;}
556 static int get_detailMessage_offset() { return detailMessage_offset;}
557 // Message
558 static oop message(oop throwable);
559 static void set_message(oop throwable, oop value);
560 static Symbol* detail_message(oop throwable);
561 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
562 static void print_stack_usage(Handle stream);
563
564 static void compute_offsets();
565 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
566
567 // Allocate space for backtrace (created but stack trace not filled in)
568 static void allocate_backtrace(Handle throwable, TRAPS);
569 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
570 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
571 // Fill in current stack trace, can cause GC
572 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
573 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
574 // Programmatic access to stack trace
575 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
576 // Printing
577 static void print(oop throwable, outputStream* st);
578 static void print_stack_trace(Handle throwable, outputStream* st);
579 static void java_printStackTrace(Handle throwable, TRAPS);
580 // Debugging
581 friend class JavaClasses;
582 };
583
584
585 // Interface to java.lang.reflect.AccessibleObject objects
586
587 class java_lang_reflect_AccessibleObject: AllStatic {
588 private:
589 // Note that to reduce dependencies on the JDK we compute these
590 // offsets at run-time.
591 static int override_offset;
592
593 static void compute_offsets();
594
595 public:
596 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
597
598 // Accessors
599 static jboolean override(oop reflect);
600 static void set_override(oop reflect, jboolean value);
601
602 // Debugging
603 friend class JavaClasses;
604 };
605
606
607 // Interface to java.lang.reflect.Method objects
608
609 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
610 private:
611 // Note that to reduce dependencies on the JDK we compute these
612 // offsets at run-time.
613 static int clazz_offset;
614 static int name_offset;
615 static int returnType_offset;
616 static int parameterTypes_offset;
617 static int exceptionTypes_offset;
618 static int slot_offset;
619 static int modifiers_offset;
620 static int signature_offset;
621 static int annotations_offset;
622 static int parameter_annotations_offset;
623 static int annotation_default_offset;
624
625 static void compute_offsets();
626 public:
627 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
628
629 // Allocation
630 static Handle create(TRAPS);
631
632 // Accessors
633 static oop clazz(oop reflect);
634 static void set_clazz(oop reflect, oop value);
635
636 static void set_name(oop method, oop value);
637
638 static oop return_type(oop method);
639 static void set_return_type(oop method, oop value);
640
641 static oop parameter_types(oop method);
642 static void set_parameter_types(oop method, oop value);
643
644 static int slot(oop reflect);
645 static void set_slot(oop reflect, int value);
646
647 static void set_exception_types(oop method, oop value);
648 static void set_modifiers(oop method, int value);
649 static void set_signature(oop method, oop value);
650 static void set_annotations(oop method, oop value);
651 static void set_parameter_annotations(oop method, oop value);
652 static void set_annotation_default(oop method, oop value);
653
654 // Debugging
655 friend class JavaClasses;
656 };
657
658
659 // Interface to java.lang.reflect.Constructor objects
660
661 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
662 private:
663 // Note that to reduce dependencies on the JDK we compute these
664 // offsets at run-time.
665 static int clazz_offset;
666 static int parameterTypes_offset;
667 static int exceptionTypes_offset;
668 static int slot_offset;
669 static int modifiers_offset;
670 static int signature_offset;
671 static int annotations_offset;
672 static int parameter_annotations_offset;
673
674 static void compute_offsets();
675 public:
676 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
677
678 // Allocation
679 static Handle create(TRAPS);
680
681 // Accessors
682 static oop clazz(oop reflect);
683 static void set_clazz(oop reflect, oop value);
684
685 static oop parameter_types(oop constructor);
686 static void set_parameter_types(oop constructor, oop value);
687
688 static int slot(oop reflect);
689 static void set_slot(oop reflect, int value);
690
691 static void set_exception_types(oop constructor, oop value);
692 static void set_modifiers(oop constructor, int value);
693 static void set_signature(oop constructor, oop value);
694 static void set_annotations(oop constructor, oop value);
695 static void set_parameter_annotations(oop method, oop value);
696
697 // Debugging
698 friend class JavaClasses;
699 };
700
701
702 // Interface to java.lang.reflect.Field objects
703
704 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
705 private:
706 // Note that to reduce dependencies on the JDK we compute these
707 // offsets at run-time.
708 static int clazz_offset;
709 static int name_offset;
710 static int type_offset;
711 static int slot_offset;
712 static int modifiers_offset;
713 static int signature_offset;
714 static int annotations_offset;
715
716 static void compute_offsets();
717
718 public:
719 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
720
721 // Allocation
722 static Handle create(TRAPS);
723
724 // Accessors
725 static oop clazz(oop reflect);
726 static void set_clazz(oop reflect, oop value);
727
728 static oop name(oop field);
729 static void set_name(oop field, oop value);
730
731 static oop type(oop field);
732 static void set_type(oop field, oop value);
733
734 static int slot(oop reflect);
735 static void set_slot(oop reflect, int value);
736
737 static int modifiers(oop field);
738 static void set_modifiers(oop field, int value);
739
740 static void set_signature(oop constructor, oop value);
741 static void set_annotations(oop constructor, oop value);
742 static void set_parameter_annotations(oop method, oop value);
743 static void set_annotation_default(oop method, oop value);
744
745 // Debugging
746 friend class JavaClasses;
747 };
748
749 class java_lang_reflect_Parameter {
750 private:
751 // Note that to reduce dependencies on the JDK we compute these
752 // offsets at run-time.
753 static int name_offset;
754 static int modifiers_offset;
755 static int index_offset;
756 static int executable_offset;
757
758 static void compute_offsets();
759
760 public:
761 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
762
763 // Allocation
764 static Handle create(TRAPS);
765
766 // Accessors
767 static oop name(oop field);
768 static void set_name(oop field, oop value);
769
770 static int index(oop reflect);
771 static void set_index(oop reflect, int value);
772
773 static int modifiers(oop reflect);
774 static void set_modifiers(oop reflect, int value);
775
776 static oop executable(oop constructor);
777 static void set_executable(oop constructor, oop value);
778
779 friend class JavaClasses;
780 };
781
782 #define MODULE_INJECTED_FIELDS(macro) \
783 macro(java_lang_Module, module_entry, intptr_signature, false)
784
785 class java_lang_Module {
786 private:
787 static int loader_offset;
788 static int name_offset;
789 static int _module_entry_offset;
790 static void compute_offsets();
791
792 public:
793 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
794
795 // Allocation
796 static Handle create(Handle loader, Handle module_name, TRAPS);
797
798 // Testers
799 static bool is_instance(oop obj);
800
801 // Accessors
802 static oop loader(oop module);
803 static void set_loader(oop module, oop value);
804
805 static oop name(oop module);
806 static void set_name(oop module, oop value);
807
808 static ModuleEntry* module_entry(oop module);
809 static void set_module_entry(oop module, ModuleEntry* module_entry);
810
811 friend class JavaClasses;
812 };
813
814 // Interface to jdk.internal.reflect.ConstantPool objects
815 class reflect_ConstantPool {
816 private:
817 // Note that to reduce dependencies on the JDK we compute these
818 // offsets at run-time.
819 static int _oop_offset;
820
821 static void compute_offsets();
822
823 public:
824 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
825
826 // Allocation
827 static Handle create(TRAPS);
828
829 // Accessors
830 static void set_cp(oop reflect, ConstantPool* value);
831 static int oop_offset() {
832 return _oop_offset;
833 }
834
835 static ConstantPool* get_cp(oop reflect);
836
837 // Debugging
838 friend class JavaClasses;
839 };
840
841 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
842 class reflect_UnsafeStaticFieldAccessorImpl {
843 private:
844 static int _base_offset;
845 static void compute_offsets();
846
847 public:
848 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
849
850 static int base_offset() {
851 return _base_offset;
852 }
853
854 // Debugging
855 friend class JavaClasses;
856 };
857
858 // Interface to java.lang primitive type boxing objects:
859 // - java.lang.Boolean
860 // - java.lang.Character
861 // - java.lang.Float
862 // - java.lang.Double
863 // - java.lang.Byte
864 // - java.lang.Short
865 // - java.lang.Integer
866 // - java.lang.Long
867
868 // This could be separated out into 8 individual classes.
869
870 class java_lang_boxing_object: AllStatic {
871 private:
872 enum {
873 hc_value_offset = 0
874 };
875 static int value_offset;
876 static int long_value_offset;
877
878 static oop initialize_and_allocate(BasicType type, TRAPS);
879 public:
880 // Allocation. Returns a boxed value, or NULL for invalid type.
881 static oop create(BasicType type, jvalue* value, TRAPS);
882 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
883 static BasicType get_value(oop box, jvalue* value);
884 static BasicType set_value(oop box, jvalue* value);
885 static BasicType basic_type(oop box);
886 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
887 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
888 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
889 static void print(BasicType type, jvalue* value, outputStream* st);
890
891 static int value_offset_in_bytes(BasicType type) {
892 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
893 value_offset;
894 }
895
896 // Debugging
897 friend class JavaClasses;
898 };
899
900
901
902 // Interface to java.lang.ref.Reference objects
903
904 class java_lang_ref_Reference: AllStatic {
905 public:
906 enum {
907 hc_referent_offset = 0,
908 hc_queue_offset = 1,
909 hc_next_offset = 2,
910 hc_discovered_offset = 3 // Is not last, see SoftRefs.
911 };
912
913 static int referent_offset;
914 static int queue_offset;
915 static int next_offset;
916 static int discovered_offset;
917
918 // Accessors
919 static inline oop referent(oop ref);
920 static inline void set_referent(oop ref, oop value);
921 static inline void set_referent_raw(oop ref, oop value);
922 static inline HeapWord* referent_addr_raw(oop ref);
923 static inline oop next(oop ref);
924 static inline void set_next(oop ref, oop value);
925 static inline void set_next_raw(oop ref, oop value);
926 static inline HeapWord* next_addr_raw(oop ref);
927 static inline oop discovered(oop ref);
928 static inline void set_discovered(oop ref, oop value);
929 static inline void set_discovered_raw(oop ref, oop value);
930 static inline HeapWord* discovered_addr_raw(oop ref);
931 static inline oop queue(oop ref);
932 static inline void set_queue(oop ref, oop value);
933 static bool is_referent_field(oop obj, ptrdiff_t offset);
934 static inline bool is_final(oop ref);
935 static inline bool is_phantom(oop ref);
936 };
937
938
939 // Interface to java.lang.ref.SoftReference objects
940
941 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
942 public:
943 static int timestamp_offset;
944 static int static_clock_offset;
945
946 // Accessors
947 static jlong timestamp(oop ref);
948
949 // Accessors for statics
950 static jlong clock();
951 static void set_clock(jlong value);
952
953 static void compute_offsets();
954 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
955 };
956
957 // Interface to java.lang.invoke.MethodHandle objects
958
959 class MethodHandleEntry;
960
961 class java_lang_invoke_MethodHandle: AllStatic {
962 friend class JavaClasses;
963
964 private:
965 static int _type_offset; // the MethodType of this MH
966 static int _form_offset; // the LambdaForm of this MH
967
968 static void compute_offsets();
969
970 public:
971 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
972
973 // Accessors
974 static oop type(oop mh);
975 static void set_type(oop mh, oop mtype);
976
977 static oop form(oop mh);
978 static void set_form(oop mh, oop lform);
979
980 // Testers
981 static bool is_subclass(Klass* klass) {
982 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
983 }
984 static bool is_instance(oop obj);
985
986 // Accessors for code generation:
987 static int type_offset_in_bytes() { return _type_offset; }
988 static int form_offset_in_bytes() { return _form_offset; }
989 };
990
991 // Interface to java.lang.invoke.DirectMethodHandle objects
992
993 class java_lang_invoke_DirectMethodHandle: AllStatic {
994 friend class JavaClasses;
995
996 private:
997 static int _member_offset; // the MemberName of this DMH
998
999 static void compute_offsets();
1000
1001 public:
1002 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1003
1004 // Accessors
1005 static oop member(oop mh);
1006
1007 // Testers
1008 static bool is_subclass(Klass* klass) {
1009 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1010 }
1011 static bool is_instance(oop obj);
1012
1013 // Accessors for code generation:
1014 static int member_offset_in_bytes() { return _member_offset; }
1015 };
1016
1017 // Interface to java.lang.invoke.LambdaForm objects
1018 // (These are a private interface for managing adapter code generation.)
1019
1020 class java_lang_invoke_LambdaForm: AllStatic {
1021 friend class JavaClasses;
1022
1023 private:
1024 static int _vmentry_offset; // type is MemberName
1025
1026 static void compute_offsets();
1027
1028 public:
1029 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1030
1031 // Accessors
1032 static oop vmentry(oop lform);
1033 static void set_vmentry(oop lform, oop invoker);
1034
1035 // Testers
1036 static bool is_subclass(Klass* klass) {
1037 return SystemDictionary::LambdaForm_klass() != NULL &&
1038 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1039 }
1040 static bool is_instance(oop obj);
1041
1042 // Accessors for code generation:
1043 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1044 };
1045
1046
1047 // Interface to java.lang.invoke.MemberName objects
1048 // (These are a private interface for Java code to query the class hierarchy.)
1049
1050 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1051 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1052 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1053
1054 class java_lang_invoke_ResolvedMethodName : AllStatic {
1055 friend class JavaClasses;
1056
1057 static int _vmtarget_offset;
1058 static int _vmholder_offset;
1059
1060 static void compute_offsets();
1061 public:
1062 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1063
1064 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1065
1066 static Method* vmtarget(oop resolved_method);
1067 static void set_vmtarget(oop resolved_method, Method* method);
1068
1069 // find or create resolved member name
1070 static oop find_resolved_method(const methodHandle& m, TRAPS);
1071
1072 static bool is_instance(oop resolved_method);
1073 };
1074
1075
1076 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1077 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1078
1079
1080 class java_lang_invoke_MemberName: AllStatic {
1081 friend class JavaClasses;
1082
1083 private:
1084 // From java.lang.invoke.MemberName:
1085 // private Class<?> clazz; // class in which the method is defined
1086 // private String name; // may be null if not yet materialized
1087 // private Object type; // may be null if not yet materialized
1088 // private int flags; // modifier bits; see reflect.Modifier
1089 // private ResolvedMethodName method; // holds VM-specific target value
1090 // private intptr_t vmindex; // member index within class or interface
1091 static int _clazz_offset;
1092 static int _name_offset;
1093 static int _type_offset;
1094 static int _flags_offset;
1095 static int _method_offset;
1096 static int _vmindex_offset;
1097
1098 static void compute_offsets();
1099
1100 public:
1101 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1102 // Accessors
1103 static oop clazz(oop mname);
1104 static void set_clazz(oop mname, oop clazz);
1105
1106 static oop type(oop mname);
1107 static void set_type(oop mname, oop type);
1108
1109 static oop name(oop mname);
1110 static void set_name(oop mname, oop name);
1111
1112 static int flags(oop mname);
1113 static void set_flags(oop mname, int flags);
1114
1115 // Link through ResolvedMethodName field to get Method*
1116 static Method* vmtarget(oop mname);
1117 static void set_method(oop mname, oop method);
1118
1119 static intptr_t vmindex(oop mname);
1120 static void set_vmindex(oop mname, intptr_t index);
1121
1122 // Testers
1123 static bool is_subclass(Klass* klass) {
1124 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1125 }
1126 static bool is_instance(oop obj);
1127
1128 static bool is_method(oop obj);
1129
1130 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1131 enum {
1132 MN_IS_METHOD = 0x00010000, // method (not constructor)
1133 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1134 MN_IS_FIELD = 0x00040000, // field
1135 MN_IS_TYPE = 0x00080000, // nested type
1136 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1137 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1138 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1139 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1140 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1141 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1142 };
1143
1144 // Accessors for code generation:
1145 static int clazz_offset_in_bytes() { return _clazz_offset; }
1146 static int type_offset_in_bytes() { return _type_offset; }
1147 static int name_offset_in_bytes() { return _name_offset; }
1148 static int flags_offset_in_bytes() { return _flags_offset; }
1149 static int method_offset_in_bytes() { return _method_offset; }
1150 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1151 };
1152
1153
1154 // Interface to java.lang.invoke.MethodType objects
1155
1156 class java_lang_invoke_MethodType: AllStatic {
1157 friend class JavaClasses;
1158
1159 private:
1160 static int _rtype_offset;
1161 static int _ptypes_offset;
1162
1163 static void compute_offsets();
1164
1165 public:
1166 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1167 // Accessors
1168 static oop rtype(oop mt);
1169 static objArrayOop ptypes(oop mt);
1170
1171 static oop ptype(oop mt, int index);
1172 static int ptype_count(oop mt);
1173
1174 static int ptype_slot_count(oop mt); // extra counts for long/double
1175 static int rtype_slot_count(oop mt); // extra counts for long/double
1176
1177 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1178 static void print_signature(oop mt, outputStream* st);
1179
1180 static bool is_instance(oop obj);
1181
1182 static bool equals(oop mt1, oop mt2);
1183
1184 // Accessors for code generation:
1185 static int rtype_offset_in_bytes() { return _rtype_offset; }
1186 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1187 };
1188
1189
1190 // Interface to java.lang.invoke.CallSite objects
1191
1192 class java_lang_invoke_CallSite: AllStatic {
1193 friend class JavaClasses;
1194
1195 private:
1196 static int _target_offset;
1197 static int _context_offset;
1198
1199 static void compute_offsets();
1200
1201 public:
1202 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1203 // Accessors
1204 static oop target( oop site);
1205 static void set_target( oop site, oop target);
1206 static void set_target_volatile( oop site, oop target);
1207
1208 static oop context_no_keepalive(oop site);
1209
1210 // Testers
1211 static bool is_subclass(Klass* klass) {
1212 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1213 }
1214 static bool is_instance(oop obj);
1215
1216 // Accessors for code generation:
1217 static int target_offset_in_bytes() { return _target_offset; }
1218 };
1219
1220 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1221
1222 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1223 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1224 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1225
1226 class DependencyContext;
1227
1228 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1229 friend class JavaClasses;
1230
1231 private:
1232 static int _vmdependencies_offset;
1233 static int _last_cleanup_offset;
1234
1235 static void compute_offsets();
1236
1237 public:
1238 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1239 // Accessors
1240 static DependencyContext vmdependencies(oop context);
1241
1242 // Testers
1243 static bool is_subclass(Klass* klass) {
1244 return klass->is_subclass_of(SystemDictionary::Context_klass());
1245 }
1246 static bool is_instance(oop obj);
1247 };
1248
1249 // Interface to java.security.AccessControlContext objects
1250
1251 class java_security_AccessControlContext: AllStatic {
1252 private:
1253 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1254 // so we compute the offsets at startup rather than hard-wiring them.
1255 static int _context_offset;
1256 static int _privilegedContext_offset;
1257 static int _isPrivileged_offset;
1258 static int _isAuthorized_offset;
1259
1260 static void compute_offsets();
1261 public:
1262 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1263 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1264
1265 // Debugging/initialization
1266 friend class JavaClasses;
1267 };
1268
1269
1270 // Interface to java.lang.ClassLoader objects
1271
1272 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1273 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1274
1275 class java_lang_ClassLoader : AllStatic {
1276 private:
1277 static int _loader_data_offset;
1278 static bool offsets_computed;
1279 static int parent_offset;
1280 static int parallelCapable_offset;
1281 static int name_offset;
1282 static int nameAndId_offset;
1283 static int unnamedModule_offset;
1284
1285 public:
1286 static void compute_offsets();
1287 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1288
1289 static ClassLoaderData* loader_data_acquire(oop loader);
1290 static ClassLoaderData* loader_data_raw(oop loader);
1291 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1292
1293 static oop parent(oop loader);
1294 static oop name(oop loader);
1295 static oop nameAndId(oop loader);
1296 static bool isAncestor(oop loader, oop cl);
1297
1298 // Support for parallelCapable field
1299 static bool parallelCapable(oop the_class_mirror);
1300
1301 static bool is_trusted_loader(oop loader);
1302
1303 // Return true if this is one of the class loaders associated with
1304 // the generated bytecodes for reflection.
1305 static bool is_reflection_class_loader(oop loader);
1306
1307 // Fix for 4474172
1308 static oop non_reflection_class_loader(oop loader);
1309
1310 // Testers
1311 static bool is_subclass(Klass* klass) {
1312 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1313 }
1314 static bool is_instance(oop obj);
1315
1316 static oop unnamedModule(oop loader);
1317
1318 // Debugging
1319 friend class JavaClasses;
1320 friend class ClassFileParser; // access to number_of_fake_fields
1321 };
1322
1323
1324 // Interface to java.lang.System objects
1325
1326 class java_lang_System : AllStatic {
1327 private:
1328 static int static_in_offset;
1329 static int static_out_offset;
1330 static int static_err_offset;
1331 static int static_security_offset;
1332
1333 public:
1334 static int in_offset_in_bytes();
1335 static int out_offset_in_bytes();
1336 static int err_offset_in_bytes();
1337
1338 static void compute_offsets();
1339 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1340
1341 // Debugging
1342 friend class JavaClasses;
1343 };
1344
1345
1346 // Interface to java.lang.StackTraceElement objects
1347
1348 class java_lang_StackTraceElement: AllStatic {
1349 private:
1350 static int declaringClassObject_offset;
1351 static int classLoaderName_offset;
1352 static int moduleName_offset;
1353 static int moduleVersion_offset;
1354 static int declaringClass_offset;
1355 static int methodName_offset;
1356 static int fileName_offset;
1357 static int lineNumber_offset;
1358
1359 // Setters
1360 static void set_classLoaderName(oop element, oop value);
1361 static void set_moduleName(oop element, oop value);
1362 static void set_moduleVersion(oop element, oop value);
1363 static void set_declaringClass(oop element, oop value);
1364 static void set_methodName(oop element, oop value);
1365 static void set_fileName(oop element, oop value);
1366 static void set_lineNumber(oop element, int value);
1367 static void set_declaringClassObject(oop element, oop value);
1368
1369 public:
1370 // Create an instance of StackTraceElement
1371 static oop create(const methodHandle& method, int bci, TRAPS);
1372
1373 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1374 int version, int bci, Symbol* name, TRAPS);
1375
1376 static void compute_offsets();
1377 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1378
1379 // Debugging
1380 friend class JavaClasses;
1381 };
1382
1383
1384 class Backtrace: AllStatic {
1385 public:
1386 // Helper backtrace functions to store bci|version together.
1387 static int merge_bci_and_version(int bci, int version);
1388 static int merge_mid_and_cpref(int mid, int cpref);
1389 static int bci_at(unsigned int merged);
1390 static int version_at(unsigned int merged);
1391 static int mid_at(unsigned int merged);
1392 static int cpref_at(unsigned int merged);
1393 static int get_line_number(const methodHandle& method, int bci);
1394 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1395
1396 // Debugging
1397 friend class JavaClasses;
1398 };
1399
1400 // Interface to java.lang.StackFrameInfo objects
1401
1402 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1403 macro(java_lang_StackFrameInfo, version, short_signature, false)
1404
1405 class java_lang_StackFrameInfo: AllStatic {
1406 private:
1407 static int _memberName_offset;
1408 static int _bci_offset;
1409 static int _version_offset;
1410
1411 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1412
1413 public:
1414 // Setters
1415 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1416 static void set_bci(oop info, int value);
1417
1418 static void set_version(oop info, short value);
1419
1420 static void compute_offsets();
1421 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1422
1423 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1424
1425 // Debugging
1426 friend class JavaClasses;
1427 };
1428
1429 class java_lang_LiveStackFrameInfo: AllStatic {
1430 private:
1431 static int _monitors_offset;
1432 static int _locals_offset;
1433 static int _operands_offset;
1434 static int _mode_offset;
1435
1436 public:
1437 static void set_monitors(oop info, oop value);
1438 static void set_locals(oop info, oop value);
1439 static void set_operands(oop info, oop value);
1440 static void set_mode(oop info, int value);
1441
1442 static void compute_offsets();
1443 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1444
1445 // Debugging
1446 friend class JavaClasses;
1447 };
1448
1449 // Interface to java.lang.AssertionStatusDirectives objects
1450
1451 class java_lang_AssertionStatusDirectives: AllStatic {
1452 private:
1453 static int classes_offset;
1454 static int classEnabled_offset;
1455 static int packages_offset;
1456 static int packageEnabled_offset;
1457 static int deflt_offset;
1458
1459 public:
1460 // Setters
1461 static void set_classes(oop obj, oop val);
1462 static void set_classEnabled(oop obj, oop val);
1463 static void set_packages(oop obj, oop val);
1464 static void set_packageEnabled(oop obj, oop val);
1465 static void set_deflt(oop obj, bool val);
1466
1467 static void compute_offsets();
1468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1469
1470 // Debugging
1471 friend class JavaClasses;
1472 };
1473
1474
1475 class java_nio_Buffer: AllStatic {
1476 private:
1477 static int _limit_offset;
1478
1479 public:
1480 static int limit_offset();
1481 static void compute_offsets();
1482 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1483 };
1484
1485 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1486 private:
1487 static int _owner_offset;
1488 public:
1489 static void compute_offsets();
1490 static oop get_owner_threadObj(oop obj);
1491 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1492 };
1493
1494 // Use to declare fields that need to be injected into Java classes
1495 // for the JVM to use. The name_index and signature_index are
1496 // declared in vmSymbols. The may_be_java flag is used to declare
1497 // fields that might already exist in Java but should be injected if
1498 // they don't. Otherwise the field is unconditionally injected and
1499 // the JVM uses the injected one. This is to ensure that name
1500 // collisions don't occur. In general may_be_java should be false
1501 // unless there's a good reason.
1502
1503 class InjectedField {
1504 public:
1505 const SystemDictionary::WKID klass_id;
1506 const vmSymbols::SID name_index;
1507 const vmSymbols::SID signature_index;
1508 const bool may_be_java;
1509
1510
1511 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1512 Symbol* name() const { return lookup_symbol(name_index); }
1513 Symbol* signature() const { return lookup_symbol(signature_index); }
1514
1515 int compute_offset();
1516
1517 // Find the Symbol for this index
1518 static Symbol* lookup_symbol(int symbol_index) {
1519 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1520 }
1521 };
1522
1523 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1524 klass##_##name##_enum,
1525
1526 #define ALL_INJECTED_FIELDS(macro) \
1527 CLASS_INJECTED_FIELDS(macro) \
1528 CLASSLOADER_INJECTED_FIELDS(macro) \
1529 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1530 MEMBERNAME_INJECTED_FIELDS(macro) \
1531 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1532 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1533 MODULE_INJECTED_FIELDS(macro)
1534
1535 // Interface to hard-coded offset checking
1536
1537 class JavaClasses : AllStatic {
1538 private:
1539
1540 static InjectedField _injected_fields[];
1541
1542 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1543 public:
1544 enum InjectedFieldID {
1545 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1546 MAX_enum
1547 };
1548
1549 static int compute_injected_offset(InjectedFieldID id);
1550
1551 static void compute_hard_coded_offsets();
1552 static void compute_offsets();
1553 static void check_offsets() PRODUCT_RETURN;
1554 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1555 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1556 };
1557
1558 #undef DECLARE_INJECTED_FIELD_ENUM
1559
1560 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP