1 /*
2 * Copyright (c) 1997, 2018, 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_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_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 int utf8_length(oop java_string);
151
152 // String converters
153 static char* as_utf8_string(oop java_string);
154 static char* as_utf8_string(oop java_string, char* buf, int buflen);
155 static char* as_utf8_string(oop java_string, int start, int len);
156 static char* as_utf8_string(oop java_string, int start, int len, char* buf, int buflen);
157 static char* as_platform_dependent_str(Handle java_string, TRAPS);
158 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
159 // produce an ascii string with all other values quoted using \u####
160 static char* as_quoted_ascii(oop java_string);
161
162 // Compute the hash value for a java.lang.String object which would
163 // contain the characters passed in.
164 //
165 // As the hash value used by the String object itself, in
166 // String.hashCode(). This value is normally calculated in Java code
167 // in the String.hashCode method(), but is precomputed for String
168 // objects in the shared archive file.
169 // hash P(31) from Kernighan & Ritchie
170 //
171 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
172 static unsigned int hash_code(const jchar* s, int len) {
173 unsigned int h = 0;
174 while (len-- > 0) {
175 h = 31*h + (unsigned int) *s;
176 s++;
177 }
178 return h;
179 }
180
181 static unsigned int hash_code(const jbyte* s, int len) {
182 unsigned int h = 0;
183 while (len-- > 0) {
184 h = 31*h + (((unsigned int) *s) & 0xFF);
185 s++;
186 }
187 return h;
188 }
189
190 static unsigned int hash_code(oop java_string);
191
192 static bool equals(oop java_string, const jchar* chars, int len);
193 static bool equals(oop str1, oop str2);
194
195 // Conversion between '.' and '/' formats
196 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
197 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
198
199 // Conversion
200 static Symbol* as_symbol(oop java_string, TRAPS);
201 static Symbol* as_symbol_or_null(oop java_string);
202
203 // Testers
204 static bool is_instance(oop obj);
205 static inline bool is_instance_inlined(oop obj);
206
207 // Debugging
208 static void print(oop java_string, outputStream* st);
209 friend class JavaClasses;
210 friend class StringTable;
211 };
212
213
214 // Interface to java.lang.Class objects
215
216 #define CLASS_INJECTED_FIELDS(macro) \
217 macro(java_lang_Class, klass, intptr_signature, false) \
218 macro(java_lang_Class, array_klass, intptr_signature, false) \
219 macro(java_lang_Class, oop_size, int_signature, false) \
220 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
221 macro(java_lang_Class, protection_domain, object_signature, false) \
222 macro(java_lang_Class, signers, object_signature, false)
223
224 class java_lang_Class : AllStatic {
225 friend class VMStructs;
226 friend class JVMCIVMStructs;
227
228 private:
229 // The fake offsets are added by the class loader when java.lang.Class is loaded
230
231 static int _klass_offset;
232 static int _array_klass_offset;
233
234 static int _oop_size_offset;
235 static int _static_oop_field_count_offset;
236
237 static int _protection_domain_offset;
238 static int _init_lock_offset;
239 static int _signers_offset;
240 static int _class_loader_offset;
241 static int _module_offset;
242 static int _component_mirror_offset;
243
244 static bool offsets_computed;
245 static int classRedefinedCount_offset;
246
247 static GrowableArray<Klass*>* _fixup_mirror_list;
248 static GrowableArray<Klass*>* _fixup_module_field_list;
249
250 static void set_init_lock(oop java_class, oop init_lock);
251 static void set_protection_domain(oop java_class, oop protection_domain);
252 static void set_class_loader(oop java_class, oop class_loader);
253 static void set_component_mirror(oop java_class, oop comp_mirror);
254 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
255 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
256 public:
257 static void allocate_fixup_lists();
258 static void compute_offsets();
259
260 // Instance creation
261 static void create_mirror(Klass* k, Handle class_loader, Handle module,
262 Handle protection_domain, TRAPS);
263 static void fixup_mirror(Klass* k, TRAPS);
264 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
265
266 // Archiving
267 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
268 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
269 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
270 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
271 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
272 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
273 Handle protection_domain,
274 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
275
276 static void fixup_module_field(Klass* k, Handle module);
277
278 // Conversion
279 static Klass* as_Klass(oop java_class);
280 static Klass* as_Klass_raw(oop java_class);
281 static void set_klass(oop java_class, Klass* klass);
282 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
283 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
284 static void print_signature(oop java_class, outputStream *st);
285 static const char* as_external_name(oop java_class);
286 // Testing
287 static bool is_instance(oop obj);
288
289 static bool is_primitive(oop java_class);
290 static BasicType primitive_type(oop java_class);
291 static oop primitive_mirror(BasicType t);
292 // JVM_NewArray support
293 static Klass* array_klass_acquire(oop java_class);
294 static void release_set_array_klass(oop java_class, Klass* klass);
295 // compiler support for class operations
296 static int klass_offset_in_bytes() { return _klass_offset; }
297 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
298 // Support for classRedefinedCount field
299 static int classRedefinedCount(oop the_class_mirror);
300 static void set_classRedefinedCount(oop the_class_mirror, int value);
301
302 // Support for embedded per-class oops
303 static oop protection_domain(oop java_class);
304 static oop init_lock(oop java_class);
305 static oop component_mirror(oop java_class);
306 static objArrayOop signers(oop java_class);
307 static void set_signers(oop java_class, objArrayOop signers);
308
309 static oop class_loader(oop java_class);
310 static void set_module(oop java_class, oop module);
311 static oop module(oop java_class);
312
313 static int oop_size(oop java_class);
314 static int oop_size_raw(oop java_class);
315 static void set_oop_size(HeapWord* java_class, int size);
316 static int static_oop_field_count(oop java_class);
317 static int static_oop_field_count_raw(oop java_class);
318 static void set_static_oop_field_count(oop java_class, int size);
319
320 static GrowableArray<Klass*>* fixup_mirror_list() {
321 return _fixup_mirror_list;
322 }
323 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
324 _fixup_mirror_list = v;
325 }
326
327 static GrowableArray<Klass*>* fixup_module_field_list() {
328 return _fixup_module_field_list;
329 }
330 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
331 _fixup_module_field_list = v;
332 }
333
334 // Debugging
335 friend class JavaClasses;
336 friend class InstanceKlass; // verification code accesses offsets
337 friend class ClassFileParser; // access to number_of_fake_fields
338 };
339
340 // Interface to java.lang.Thread objects
341
342 class java_lang_Thread : AllStatic {
343 private:
344 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
345 // so we compute the offsets at startup rather than hard-wiring them.
346 static int _name_offset;
347 static int _group_offset;
348 static int _contextClassLoader_offset;
349 static int _inheritedAccessControlContext_offset;
350 static int _priority_offset;
351 static int _eetop_offset;
352 static int _daemon_offset;
353 static int _stillborn_offset;
354 static int _stackSize_offset;
355 static int _tid_offset;
356 static int _thread_status_offset;
357 static int _park_blocker_offset;
358 static int _park_event_offset ;
359
360 static void compute_offsets();
361
362 public:
363 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
364
365 // Instance creation
366 static oop create();
367 // Returns the JavaThread associated with the thread obj
368 static JavaThread* thread(oop java_thread);
369 // Set JavaThread for instance
370 static void set_thread(oop java_thread, JavaThread* thread);
371 // Name
372 static oop name(oop java_thread);
373 static void set_name(oop java_thread, oop name);
374 // Priority
375 static ThreadPriority priority(oop java_thread);
376 static void set_priority(oop java_thread, ThreadPriority priority);
377 // Thread group
378 static oop threadGroup(oop java_thread);
379 // Stillborn
380 static bool is_stillborn(oop java_thread);
381 static void set_stillborn(oop java_thread);
382 // Alive (NOTE: this is not really a field, but provides the correct
383 // definition without doing a Java call)
384 static bool is_alive(oop java_thread);
385 // Daemon
386 static bool is_daemon(oop java_thread);
387 static void set_daemon(oop java_thread);
388 // Context ClassLoader
389 static oop context_class_loader(oop java_thread);
390 // Control context
391 static oop inherited_access_control_context(oop java_thread);
392 // Stack size hint
393 static jlong stackSize(oop java_thread);
394 // Thread ID
395 static jlong thread_id(oop java_thread);
396
397 // Blocker object responsible for thread parking
398 static oop park_blocker(oop java_thread);
399
400 // Pointer to type-stable park handler, encoded as jlong.
401 // Should be set when apparently null
402 // For details, see unsafe.cpp Unsafe_Unpark
403 static jlong park_event(oop java_thread);
404 static bool set_park_event(oop java_thread, jlong ptr);
405
406 // Java Thread Status for JVMTI and M&M use.
407 // This thread status info is saved in threadStatus field of
408 // java.lang.Thread java class.
409 enum ThreadStatus {
410 NEW = 0,
411 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
412 JVMTI_THREAD_STATE_RUNNABLE,
413 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
414 JVMTI_THREAD_STATE_WAITING +
415 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
416 JVMTI_THREAD_STATE_SLEEPING,
417 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
418 JVMTI_THREAD_STATE_WAITING +
419 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
420 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
421 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
422 JVMTI_THREAD_STATE_WAITING +
423 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
424 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
425 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
426 JVMTI_THREAD_STATE_WAITING +
427 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
428 JVMTI_THREAD_STATE_PARKED,
429 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
430 JVMTI_THREAD_STATE_WAITING +
431 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
432 JVMTI_THREAD_STATE_PARKED,
433 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
434 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
435 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
436 };
437 // Write thread status info to threadStatus field of java.lang.Thread.
438 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
439 // Read thread status info from threadStatus field of java.lang.Thread.
440 static ThreadStatus get_thread_status(oop java_thread_oop);
441
442 static const char* thread_status_name(oop java_thread_oop);
443
444 // Debugging
445 friend class JavaClasses;
446 };
447
448 // Interface to java.lang.ThreadGroup objects
449
450 class java_lang_ThreadGroup : AllStatic {
451 private:
452 static int _parent_offset;
453 static int _name_offset;
454 static int _threads_offset;
455 static int _groups_offset;
456 static int _maxPriority_offset;
457 static int _destroyed_offset;
458 static int _daemon_offset;
459 static int _nthreads_offset;
460 static int _ngroups_offset;
461
462 static void compute_offsets();
463
464 public:
465 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
466
467 // parent ThreadGroup
468 static oop parent(oop java_thread_group);
469 // name
470 static const char* name(oop java_thread_group);
471 // ("name as oop" accessor is not necessary)
472 // Number of threads in group
473 static int nthreads(oop java_thread_group);
474 // threads
475 static objArrayOop threads(oop java_thread_group);
476 // Number of threads in group
477 static int ngroups(oop java_thread_group);
478 // groups
479 static objArrayOop groups(oop java_thread_group);
480 // maxPriority in group
481 static ThreadPriority maxPriority(oop java_thread_group);
482 // Destroyed
483 static bool is_destroyed(oop java_thread_group);
484 // Daemon
485 static bool is_daemon(oop java_thread_group);
486 // Debugging
487 friend class JavaClasses;
488 };
489
490
491
492 // Interface to java.lang.Throwable objects
493
494 class java_lang_Throwable: AllStatic {
495 friend class BacktraceBuilder;
496 friend class BacktraceIterator;
497
498 private:
499 // Offsets
500 enum {
501 hc_backtrace_offset = 0,
502 hc_detailMessage_offset = 1,
503 hc_cause_offset = 2, // New since 1.4
504 hc_stackTrace_offset = 3 // New since 1.4
505 };
506 // Trace constants
507 enum {
508 trace_methods_offset = 0,
509 trace_bcis_offset = 1,
510 trace_mirrors_offset = 2,
511 trace_names_offset = 3,
512 trace_next_offset = 4,
513 trace_size = 5,
514 trace_chunk_size = 32
515 };
516
517 static int backtrace_offset;
518 static int detailMessage_offset;
519 static int stackTrace_offset;
520 static int depth_offset;
521 static int static_unassigned_stacktrace_offset;
522
523 // StackTrace (programmatic access, new since 1.4)
524 static void clear_stacktrace(oop throwable);
525 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
526 static void set_stacktrace(oop throwable, oop st_element_array);
527 static oop unassigned_stacktrace();
528
529 public:
530 // Backtrace
531 static oop backtrace(oop throwable);
532 static void set_backtrace(oop throwable, oop value);
533 static int depth(oop throwable);
534 static void set_depth(oop throwable, int value);
535 // Needed by JVMTI to filter out this internal field.
536 static int get_backtrace_offset() { return backtrace_offset;}
537 static int get_detailMessage_offset() { return detailMessage_offset;}
538 // Message
539 static oop message(oop throwable);
540 static void set_message(oop throwable, oop value);
541 static Symbol* detail_message(oop throwable);
542 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
543 static void print_stack_usage(Handle stream);
544
545 static void compute_offsets();
546 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
547
548 // Allocate space for backtrace (created but stack trace not filled in)
549 static void allocate_backtrace(Handle throwable, TRAPS);
550 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
551 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
552 // Fill in current stack trace, can cause GC
553 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
554 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
555 // Programmatic access to stack trace
556 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
557 // Printing
558 static void print(oop throwable, outputStream* st);
559 static void print_stack_trace(Handle throwable, outputStream* st);
560 static void java_printStackTrace(Handle throwable, TRAPS);
561 // Debugging
562 friend class JavaClasses;
563 };
564
565
566 // Interface to java.lang.reflect.AccessibleObject objects
567
568 class java_lang_reflect_AccessibleObject: AllStatic {
569 private:
570 // Note that to reduce dependencies on the JDK we compute these
571 // offsets at run-time.
572 static int override_offset;
573
574 static void compute_offsets();
575
576 public:
577 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
578
579 // Accessors
580 static jboolean override(oop reflect);
581 static void set_override(oop reflect, jboolean value);
582
583 // Debugging
584 friend class JavaClasses;
585 };
586
587
588 // Interface to java.lang.reflect.Method objects
589
590 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
591 private:
592 // Note that to reduce dependencies on the JDK we compute these
593 // offsets at run-time.
594 static int clazz_offset;
595 static int name_offset;
596 static int returnType_offset;
597 static int parameterTypes_offset;
598 static int exceptionTypes_offset;
599 static int slot_offset;
600 static int modifiers_offset;
601 static int signature_offset;
602 static int annotations_offset;
603 static int parameter_annotations_offset;
604 static int annotation_default_offset;
605
606 static void compute_offsets();
607 public:
608 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
609
610 // Allocation
611 static Handle create(TRAPS);
612
613 // Accessors
614 static oop clazz(oop reflect);
615 static void set_clazz(oop reflect, oop value);
616
617 static void set_name(oop method, oop value);
618
619 static oop return_type(oop method);
620 static void set_return_type(oop method, oop value);
621
622 static oop parameter_types(oop method);
623 static void set_parameter_types(oop method, oop value);
624
625 static int slot(oop reflect);
626 static void set_slot(oop reflect, int value);
627
628 static void set_exception_types(oop method, oop value);
629 static void set_modifiers(oop method, int value);
630 static void set_signature(oop method, oop value);
631 static void set_annotations(oop method, oop value);
632 static void set_parameter_annotations(oop method, oop value);
633 static void set_annotation_default(oop method, oop value);
634
635 // Debugging
636 friend class JavaClasses;
637 };
638
639
640 // Interface to java.lang.reflect.Constructor objects
641
642 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
643 private:
644 // Note that to reduce dependencies on the JDK we compute these
645 // offsets at run-time.
646 static int clazz_offset;
647 static int parameterTypes_offset;
648 static int exceptionTypes_offset;
649 static int slot_offset;
650 static int modifiers_offset;
651 static int signature_offset;
652 static int annotations_offset;
653 static int parameter_annotations_offset;
654
655 static void compute_offsets();
656 public:
657 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
658
659 // Allocation
660 static Handle create(TRAPS);
661
662 // Accessors
663 static oop clazz(oop reflect);
664 static void set_clazz(oop reflect, oop value);
665
666 static oop parameter_types(oop constructor);
667 static void set_parameter_types(oop constructor, oop value);
668
669 static int slot(oop reflect);
670 static void set_slot(oop reflect, int value);
671
672 static void set_exception_types(oop constructor, oop value);
673 static void set_modifiers(oop constructor, int value);
674 static void set_signature(oop constructor, oop value);
675 static void set_annotations(oop constructor, oop value);
676 static void set_parameter_annotations(oop method, oop value);
677
678 // Debugging
679 friend class JavaClasses;
680 };
681
682
683 // Interface to java.lang.reflect.Field objects
684
685 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
686 private:
687 // Note that to reduce dependencies on the JDK we compute these
688 // offsets at run-time.
689 static int clazz_offset;
690 static int name_offset;
691 static int type_offset;
692 static int slot_offset;
693 static int modifiers_offset;
694 static int signature_offset;
695 static int annotations_offset;
696
697 static void compute_offsets();
698
699 public:
700 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
701
702 // Allocation
703 static Handle create(TRAPS);
704
705 // Accessors
706 static oop clazz(oop reflect);
707 static void set_clazz(oop reflect, oop value);
708
709 static oop name(oop field);
710 static void set_name(oop field, oop value);
711
712 static oop type(oop field);
713 static void set_type(oop field, oop value);
714
715 static int slot(oop reflect);
716 static void set_slot(oop reflect, int value);
717
718 static int modifiers(oop field);
719 static void set_modifiers(oop field, int value);
720
721 static void set_signature(oop constructor, oop value);
722 static void set_annotations(oop constructor, oop value);
723 static void set_parameter_annotations(oop method, oop value);
724 static void set_annotation_default(oop method, oop value);
725
726 // Debugging
727 friend class JavaClasses;
728 };
729
730 class java_lang_reflect_Parameter {
731 private:
732 // Note that to reduce dependencies on the JDK we compute these
733 // offsets at run-time.
734 static int name_offset;
735 static int modifiers_offset;
736 static int index_offset;
737 static int executable_offset;
738
739 static void compute_offsets();
740
741 public:
742 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
743
744 // Allocation
745 static Handle create(TRAPS);
746
747 // Accessors
748 static oop name(oop field);
749 static void set_name(oop field, oop value);
750
751 static int index(oop reflect);
752 static void set_index(oop reflect, int value);
753
754 static int modifiers(oop reflect);
755 static void set_modifiers(oop reflect, int value);
756
757 static oop executable(oop constructor);
758 static void set_executable(oop constructor, oop value);
759
760 friend class JavaClasses;
761 };
762
763 #define MODULE_INJECTED_FIELDS(macro) \
764 macro(java_lang_Module, module_entry, intptr_signature, false)
765
766 class java_lang_Module {
767 private:
768 static int loader_offset;
769 static int name_offset;
770 static int _module_entry_offset;
771 static void compute_offsets();
772
773 public:
774 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
775
776 // Allocation
777 static Handle create(Handle loader, Handle module_name, TRAPS);
778
779 // Testers
780 static bool is_instance(oop obj);
781
782 // Accessors
783 static oop loader(oop module);
784 static void set_loader(oop module, oop value);
785
786 static oop name(oop module);
787 static void set_name(oop module, oop value);
788
789 static ModuleEntry* module_entry(oop module);
790 static void set_module_entry(oop module, ModuleEntry* module_entry);
791
792 friend class JavaClasses;
793 };
794
795 #define CONSTANTPOOL_INJECTED_FIELDS(macro) \
796 macro(reflect_ConstantPool, constantPoolOop, object_signature, false)
797
798 // Interface to jdk.internal.reflect.ConstantPool objects
799 class reflect_ConstantPool {
800 private:
801 // Note that to reduce dependencies on the JDK we compute these
802 // offsets at run-time.
803 static int _constantPoolOop_offset;
804
805 static void compute_offsets();
806
807 public:
808 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
809
810 // Allocation
811 static Handle create_from_pool(ConstantPool* value, TRAPS);
812
813 // Accessors
814 static int oop_offset() {
815 return _constantPoolOop_offset;
816 }
817
818 static ConstantPool* get_cp(oop reflect);
819
820 // Debugging
821 friend class JavaClasses;
822 };
823
824 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
825 class reflect_UnsafeStaticFieldAccessorImpl {
826 private:
827 static int _base_offset;
828 static void compute_offsets();
829
830 public:
831 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
832
833 static int base_offset() {
834 return _base_offset;
835 }
836
837 // Debugging
838 friend class JavaClasses;
839 };
840
841 // Interface to java.lang primitive type boxing objects:
842 // - java.lang.Boolean
843 // - java.lang.Character
844 // - java.lang.Float
845 // - java.lang.Double
846 // - java.lang.Byte
847 // - java.lang.Short
848 // - java.lang.Integer
849 // - java.lang.Long
850
851 // This could be separated out into 8 individual classes.
852
853 class java_lang_boxing_object: AllStatic {
854 private:
855 enum {
856 hc_value_offset = 0
857 };
858 static int value_offset;
859 static int long_value_offset;
860
861 static oop initialize_and_allocate(BasicType type, TRAPS);
862 public:
863 // Allocation. Returns a boxed value, or NULL for invalid type.
864 static oop create(BasicType type, jvalue* value, TRAPS);
865 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
866 static BasicType get_value(oop box, jvalue* value);
867 static BasicType set_value(oop box, jvalue* value);
868 static BasicType basic_type(oop box);
869 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
870 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
871 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
872 static void print(BasicType type, jvalue* value, outputStream* st);
873
874 static int value_offset_in_bytes(BasicType type) {
875 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
876 value_offset;
877 }
878
879 // Debugging
880 friend class JavaClasses;
881 };
882
883
884
885 // Interface to java.lang.ref.Reference objects
886
887 class java_lang_ref_Reference: AllStatic {
888 public:
889 enum {
890 hc_referent_offset = 0,
891 hc_queue_offset = 1,
892 hc_next_offset = 2,
893 hc_discovered_offset = 3 // Is not last, see SoftRefs.
894 };
895
896 static int referent_offset;
897 static int queue_offset;
898 static int next_offset;
899 static int discovered_offset;
900
901 // Accessors
902 static inline oop referent(oop ref);
903 static inline void set_referent(oop ref, oop value);
904 static inline void set_referent_raw(oop ref, oop value);
905 static inline HeapWord* referent_addr_raw(oop ref);
906 static inline oop next(oop ref);
907 static inline void set_next(oop ref, oop value);
908 static inline void set_next_raw(oop ref, oop value);
909 static inline HeapWord* next_addr_raw(oop ref);
910 static inline oop discovered(oop ref);
911 static inline void set_discovered(oop ref, oop value);
912 static inline void set_discovered_raw(oop ref, oop value);
913 static inline HeapWord* discovered_addr_raw(oop ref);
914 static inline oop queue(oop ref);
915 static inline void set_queue(oop ref, oop value);
916 static bool is_referent_field(oop obj, ptrdiff_t offset);
917 static inline bool is_phantom(oop ref);
918 };
919
920
921 // Interface to java.lang.ref.SoftReference objects
922
923 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
924 public:
925 static int timestamp_offset;
926 static int static_clock_offset;
927
928 // Accessors
929 static jlong timestamp(oop ref);
930
931 // Accessors for statics
932 static jlong clock();
933 static void set_clock(jlong value);
934
935 static void compute_offsets();
936 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
937 };
938
939 // Interface to java.lang.invoke.MethodHandle objects
940
941 class MethodHandleEntry;
942
943 class java_lang_invoke_MethodHandle: AllStatic {
944 friend class JavaClasses;
945
946 private:
947 static int _type_offset; // the MethodType of this MH
948 static int _form_offset; // the LambdaForm of this MH
949
950 static void compute_offsets();
951
952 public:
953 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
954
955 // Accessors
956 static oop type(oop mh);
957 static void set_type(oop mh, oop mtype);
958
959 static oop form(oop mh);
960 static void set_form(oop mh, oop lform);
961
962 // Testers
963 static bool is_subclass(Klass* klass) {
964 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
965 }
966 static bool is_instance(oop obj);
967
968 // Accessors for code generation:
969 static int type_offset_in_bytes() { return _type_offset; }
970 static int form_offset_in_bytes() { return _form_offset; }
971 };
972
973 // Interface to java.lang.invoke.DirectMethodHandle objects
974
975 class java_lang_invoke_DirectMethodHandle: AllStatic {
976 friend class JavaClasses;
977
978 private:
979 static int _member_offset; // the MemberName of this DMH
980
981 static void compute_offsets();
982
983 public:
984 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
985
986 // Accessors
987 static oop member(oop mh);
988
989 // Testers
990 static bool is_subclass(Klass* klass) {
991 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
992 }
993 static bool is_instance(oop obj);
994
995 // Accessors for code generation:
996 static int member_offset_in_bytes() { return _member_offset; }
997 };
998
999 // Interface to java.lang.invoke.LambdaForm objects
1000 // (These are a private interface for managing adapter code generation.)
1001
1002 class java_lang_invoke_LambdaForm: AllStatic {
1003 friend class JavaClasses;
1004
1005 private:
1006 static int _vmentry_offset; // type is MemberName
1007
1008 static void compute_offsets();
1009
1010 public:
1011 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1012
1013 // Accessors
1014 static oop vmentry(oop lform);
1015 static void set_vmentry(oop lform, oop invoker);
1016
1017 // Testers
1018 static bool is_subclass(Klass* klass) {
1019 return SystemDictionary::LambdaForm_klass() != NULL &&
1020 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1021 }
1022 static bool is_instance(oop obj);
1023
1024 // Accessors for code generation:
1025 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1026 };
1027
1028
1029 // Interface to java.lang.invoke.MemberName objects
1030 // (These are a private interface for Java code to query the class hierarchy.)
1031
1032 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1033 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1034 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1035
1036 class java_lang_invoke_ResolvedMethodName : AllStatic {
1037 friend class JavaClasses;
1038
1039 static int _vmtarget_offset;
1040 static int _vmholder_offset;
1041
1042 static void compute_offsets();
1043 public:
1044 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1045
1046 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1047
1048 static Method* vmtarget(oop resolved_method);
1049 static void set_vmtarget(oop resolved_method, Method* method);
1050
1051 // find or create resolved member name
1052 static oop find_resolved_method(const methodHandle& m, TRAPS);
1053
1054 static bool is_instance(oop resolved_method);
1055 };
1056
1057
1058 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1059 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1060
1061
1062 class java_lang_invoke_MemberName: AllStatic {
1063 friend class JavaClasses;
1064
1065 private:
1066 // From java.lang.invoke.MemberName:
1067 // private Class<?> clazz; // class in which the method is defined
1068 // private String name; // may be null if not yet materialized
1069 // private Object type; // may be null if not yet materialized
1070 // private int flags; // modifier bits; see reflect.Modifier
1071 // private ResolvedMethodName method; // holds VM-specific target value
1072 // private intptr_t vmindex; // member index within class or interface
1073 static int _clazz_offset;
1074 static int _name_offset;
1075 static int _type_offset;
1076 static int _flags_offset;
1077 static int _method_offset;
1078 static int _vmindex_offset;
1079
1080 static void compute_offsets();
1081
1082 public:
1083 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1084 // Accessors
1085 static oop clazz(oop mname);
1086 static void set_clazz(oop mname, oop clazz);
1087
1088 static oop type(oop mname);
1089 static void set_type(oop mname, oop type);
1090
1091 static oop name(oop mname);
1092 static void set_name(oop mname, oop name);
1093
1094 static int flags(oop mname);
1095 static void set_flags(oop mname, int flags);
1096
1097 // Link through ResolvedMethodName field to get Method*
1098 static Method* vmtarget(oop mname);
1099 static void set_method(oop mname, oop method);
1100
1101 static intptr_t vmindex(oop mname);
1102 static void set_vmindex(oop mname, intptr_t index);
1103
1104 // Testers
1105 static bool is_subclass(Klass* klass) {
1106 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1107 }
1108 static bool is_instance(oop obj);
1109
1110 static bool is_method(oop obj);
1111
1112 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1113 enum {
1114 MN_IS_METHOD = 0x00010000, // method (not constructor)
1115 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1116 MN_IS_FIELD = 0x00040000, // field
1117 MN_IS_TYPE = 0x00080000, // nested type
1118 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1119 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1120 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1121 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1122 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1123 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1124 };
1125
1126 // Accessors for code generation:
1127 static int clazz_offset_in_bytes() { return _clazz_offset; }
1128 static int type_offset_in_bytes() { return _type_offset; }
1129 static int name_offset_in_bytes() { return _name_offset; }
1130 static int flags_offset_in_bytes() { return _flags_offset; }
1131 static int method_offset_in_bytes() { return _method_offset; }
1132 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1133 };
1134
1135
1136 // Interface to java.lang.invoke.MethodType objects
1137
1138 class java_lang_invoke_MethodType: AllStatic {
1139 friend class JavaClasses;
1140
1141 private:
1142 static int _rtype_offset;
1143 static int _ptypes_offset;
1144
1145 static void compute_offsets();
1146
1147 public:
1148 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1149 // Accessors
1150 static oop rtype(oop mt);
1151 static objArrayOop ptypes(oop mt);
1152
1153 static oop ptype(oop mt, int index);
1154 static int ptype_count(oop mt);
1155
1156 static int ptype_slot_count(oop mt); // extra counts for long/double
1157 static int rtype_slot_count(oop mt); // extra counts for long/double
1158
1159 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1160 static void print_signature(oop mt, outputStream* st);
1161
1162 static bool is_instance(oop obj);
1163
1164 static bool equals(oop mt1, oop mt2);
1165
1166 // Accessors for code generation:
1167 static int rtype_offset_in_bytes() { return _rtype_offset; }
1168 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1169 };
1170
1171
1172 // Interface to java.lang.invoke.CallSite objects
1173
1174 class java_lang_invoke_CallSite: AllStatic {
1175 friend class JavaClasses;
1176
1177 private:
1178 static int _target_offset;
1179 static int _context_offset;
1180
1181 static void compute_offsets();
1182
1183 public:
1184 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1185 // Accessors
1186 static oop target( oop site);
1187 static void set_target( oop site, oop target);
1188 static void set_target_volatile( oop site, oop target);
1189
1190 static oop context(oop site);
1191
1192 // Testers
1193 static bool is_subclass(Klass* klass) {
1194 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1195 }
1196 static bool is_instance(oop obj);
1197
1198 // Accessors for code generation:
1199 static int target_offset_in_bytes() { return _target_offset; }
1200 };
1201
1202 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1203
1204 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1205 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1206
1207 class DependencyContext;
1208
1209 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1210 friend class JavaClasses;
1211
1212 private:
1213 static int _vmdependencies_offset;
1214
1215 static void compute_offsets();
1216
1217 public:
1218 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1219 // Accessors
1220 static DependencyContext vmdependencies(oop context);
1221
1222 // Testers
1223 static bool is_subclass(Klass* klass) {
1224 return klass->is_subclass_of(SystemDictionary::Context_klass());
1225 }
1226 static bool is_instance(oop obj);
1227 };
1228
1229 // Interface to java.security.AccessControlContext objects
1230
1231 class java_security_AccessControlContext: AllStatic {
1232 private:
1233 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1234 // so we compute the offsets at startup rather than hard-wiring them.
1235 static int _context_offset;
1236 static int _privilegedContext_offset;
1237 static int _isPrivileged_offset;
1238 static int _isAuthorized_offset;
1239
1240 static void compute_offsets();
1241 public:
1242 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1243 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1244
1245 static bool is_authorized(Handle context);
1246
1247 // Debugging/initialization
1248 friend class JavaClasses;
1249 };
1250
1251
1252 // Interface to java.lang.ClassLoader objects
1253
1254 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1255 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1256
1257 class java_lang_ClassLoader : AllStatic {
1258 private:
1259 static int _loader_data_offset;
1260 static bool offsets_computed;
1261 static int parent_offset;
1262 static int parallelCapable_offset;
1263 static int name_offset;
1264 static int nameAndId_offset;
1265 static int unnamedModule_offset;
1266
1267 public:
1268 static void compute_offsets();
1269 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1270
1271 static ClassLoaderData* loader_data_acquire(oop loader);
1272 static ClassLoaderData* loader_data_raw(oop loader);
1273 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1274
1275 static oop parent(oop loader);
1276 static oop name(oop loader);
1277 static oop nameAndId(oop loader);
1278 static bool isAncestor(oop loader, oop cl);
1279
1280 // Support for parallelCapable field
1281 static bool parallelCapable(oop the_class_mirror);
1282
1283 static bool is_trusted_loader(oop loader);
1284
1285 // Return true if this is one of the class loaders associated with
1286 // the generated bytecodes for reflection.
1287 static bool is_reflection_class_loader(oop loader);
1288
1289 // Fix for 4474172
1290 static oop non_reflection_class_loader(oop loader);
1291
1292 // Testers
1293 static bool is_subclass(Klass* klass) {
1294 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1295 }
1296 static bool is_instance(oop obj);
1297
1298 static oop unnamedModule(oop loader);
1299
1300 // Debugging
1301 friend class JavaClasses;
1302 friend class ClassFileParser; // access to number_of_fake_fields
1303 };
1304
1305
1306 // Interface to java.lang.System objects
1307
1308 class java_lang_System : AllStatic {
1309 private:
1310 static int static_in_offset;
1311 static int static_out_offset;
1312 static int static_err_offset;
1313 static int static_security_offset;
1314
1315 public:
1316 static int in_offset_in_bytes();
1317 static int out_offset_in_bytes();
1318 static int err_offset_in_bytes();
1319
1320 static bool has_security_manager();
1321
1322 static void compute_offsets();
1323 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1324
1325 // Debugging
1326 friend class JavaClasses;
1327 };
1328
1329
1330 // Interface to java.lang.StackTraceElement objects
1331
1332 class java_lang_StackTraceElement: AllStatic {
1333 private:
1334 static int declaringClassObject_offset;
1335 static int classLoaderName_offset;
1336 static int moduleName_offset;
1337 static int moduleVersion_offset;
1338 static int declaringClass_offset;
1339 static int methodName_offset;
1340 static int fileName_offset;
1341 static int lineNumber_offset;
1342
1343 // Setters
1344 static void set_classLoaderName(oop element, oop value);
1345 static void set_moduleName(oop element, oop value);
1346 static void set_moduleVersion(oop element, oop value);
1347 static void set_declaringClass(oop element, oop value);
1348 static void set_methodName(oop element, oop value);
1349 static void set_fileName(oop element, oop value);
1350 static void set_lineNumber(oop element, int value);
1351 static void set_declaringClassObject(oop element, oop value);
1352
1353 public:
1354 // Create an instance of StackTraceElement
1355 static oop create(const methodHandle& method, int bci, TRAPS);
1356
1357 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1358 int version, int bci, Symbol* name, TRAPS);
1359
1360 static void compute_offsets();
1361 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1362
1363 // Debugging
1364 friend class JavaClasses;
1365 };
1366
1367
1368 class Backtrace: AllStatic {
1369 public:
1370 // Helper backtrace functions to store bci|version together.
1371 static int merge_bci_and_version(int bci, int version);
1372 static int merge_mid_and_cpref(int mid, int cpref);
1373 static int bci_at(unsigned int merged);
1374 static int version_at(unsigned int merged);
1375 static int mid_at(unsigned int merged);
1376 static int cpref_at(unsigned int merged);
1377 static int get_line_number(const methodHandle& method, int bci);
1378 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1379
1380 // Debugging
1381 friend class JavaClasses;
1382 };
1383
1384 // Interface to java.lang.StackFrameInfo objects
1385
1386 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1387 macro(java_lang_StackFrameInfo, version, short_signature, false)
1388
1389 class java_lang_StackFrameInfo: AllStatic {
1390 private:
1391 static int _memberName_offset;
1392 static int _bci_offset;
1393 static int _version_offset;
1394
1395 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1396
1397 public:
1398 // Setters
1399 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1400 static void set_bci(oop info, int value);
1401
1402 static void set_version(oop info, short value);
1403
1404 static void compute_offsets();
1405 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1406
1407 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1408
1409 // Debugging
1410 friend class JavaClasses;
1411 };
1412
1413 class java_lang_LiveStackFrameInfo: AllStatic {
1414 private:
1415 static int _monitors_offset;
1416 static int _locals_offset;
1417 static int _operands_offset;
1418 static int _mode_offset;
1419
1420 public:
1421 static void set_monitors(oop info, oop value);
1422 static void set_locals(oop info, oop value);
1423 static void set_operands(oop info, oop value);
1424 static void set_mode(oop info, int value);
1425
1426 static void compute_offsets();
1427 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1428
1429 // Debugging
1430 friend class JavaClasses;
1431 };
1432
1433 // Interface to java.lang.AssertionStatusDirectives objects
1434
1435 class java_lang_AssertionStatusDirectives: AllStatic {
1436 private:
1437 static int classes_offset;
1438 static int classEnabled_offset;
1439 static int packages_offset;
1440 static int packageEnabled_offset;
1441 static int deflt_offset;
1442
1443 public:
1444 // Setters
1445 static void set_classes(oop obj, oop val);
1446 static void set_classEnabled(oop obj, oop val);
1447 static void set_packages(oop obj, oop val);
1448 static void set_packageEnabled(oop obj, oop val);
1449 static void set_deflt(oop obj, bool val);
1450
1451 static void compute_offsets();
1452 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1453
1454 // Debugging
1455 friend class JavaClasses;
1456 };
1457
1458
1459 class java_nio_Buffer: AllStatic {
1460 private:
1461 static int _limit_offset;
1462
1463 public:
1464 static int limit_offset();
1465 static void compute_offsets();
1466 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1467 };
1468
1469 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1470 private:
1471 static int _owner_offset;
1472 public:
1473 static void compute_offsets();
1474 static oop get_owner_threadObj(oop obj);
1475 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1476 };
1477
1478 // Use to declare fields that need to be injected into Java classes
1479 // for the JVM to use. The name_index and signature_index are
1480 // declared in vmSymbols. The may_be_java flag is used to declare
1481 // fields that might already exist in Java but should be injected if
1482 // they don't. Otherwise the field is unconditionally injected and
1483 // the JVM uses the injected one. This is to ensure that name
1484 // collisions don't occur. In general may_be_java should be false
1485 // unless there's a good reason.
1486
1487 class InjectedField {
1488 public:
1489 const SystemDictionary::WKID klass_id;
1490 const vmSymbols::SID name_index;
1491 const vmSymbols::SID signature_index;
1492 const bool may_be_java;
1493
1494
1495 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1496 Symbol* name() const { return lookup_symbol(name_index); }
1497 Symbol* signature() const { return lookup_symbol(signature_index); }
1498
1499 int compute_offset();
1500
1501 // Find the Symbol for this index
1502 static Symbol* lookup_symbol(int symbol_index) {
1503 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1504 }
1505 };
1506
1507 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1508 klass##_##name##_enum,
1509
1510 #define ALL_INJECTED_FIELDS(macro) \
1511 CLASS_INJECTED_FIELDS(macro) \
1512 CONSTANTPOOL_INJECTED_FIELDS(macro) \
1513 CLASSLOADER_INJECTED_FIELDS(macro) \
1514 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1515 MEMBERNAME_INJECTED_FIELDS(macro) \
1516 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1517 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1518 MODULE_INJECTED_FIELDS(macro)
1519
1520 // Interface to hard-coded offset checking
1521
1522 class JavaClasses : AllStatic {
1523 private:
1524
1525 static InjectedField _injected_fields[];
1526
1527 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1528 public:
1529 enum InjectedFieldID {
1530 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1531 MAX_enum
1532 };
1533
1534 static int compute_injected_offset(InjectedFieldID id);
1535
1536 static void compute_hard_coded_offsets();
1537 static void compute_offsets();
1538 static void check_offsets() PRODUCT_RETURN;
1539 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1540 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1541 };
1542
1543 #undef DECLARE_INJECTED_FIELD_ENUM
1544
1545 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP