1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 f(jdk_internal_misc_UnsafeConstants) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int hashIsZero_offset;
98 static int coder_offset;
99
100 static bool initialized;
101
102 static Handle basic_create(int length, bool byte_arr, TRAPS);
103
104 static inline void set_coder(oop string, jbyte coder);
105
106 public:
107
108 // Coders
109 enum Coder {
110 CODER_LATIN1 = 0,
111 CODER_UTF16 = 1
112 };
113
114 static void compute_offsets();
115 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
116
117 // Instance creation
118 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
119 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
120 static Handle create_from_str(const char* utf8_str, TRAPS);
121 static oop create_oop_from_str(const char* utf8_str, TRAPS);
122 static Handle create_from_symbol(Symbol* symbol, TRAPS);
123 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
124 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
125
126 static void set_compact_strings(bool value);
127
128 static int value_offset_in_bytes() {
129 assert(initialized && (value_offset > 0), "Must be initialized");
130 return value_offset;
131 }
132 static int hash_offset_in_bytes() {
133 assert(initialized && (hash_offset > 0), "Must be initialized");
134 return hash_offset;
135 }
136 static int hashIsZero_offset_in_bytes() {
137 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
138 return hashIsZero_offset;
139 }
140 static int coder_offset_in_bytes() {
141 assert(initialized && (coder_offset > 0), "Must be initialized");
142 return coder_offset;
143 }
144
145 static inline void set_value_raw(oop string, typeArrayOop buffer);
146 static inline void set_value(oop string, typeArrayOop buffer);
147
148 // Accessors
149 static inline typeArrayOop value(oop java_string);
150 static inline typeArrayOop value_no_keepalive(oop java_string);
151 static inline bool hash_is_set(oop string);
152 static inline bool is_latin1(oop java_string);
153 static inline int length(oop java_string);
154 static inline int length(oop java_string, typeArrayOop string_value);
155 static int utf8_length(oop java_string);
156 static int utf8_length(oop java_string, typeArrayOop string_value);
157
158 // String converters
159 static char* as_utf8_string(oop java_string);
160 static char* as_utf8_string(oop java_string, char* buf, int buflen);
161 static char* as_utf8_string(oop java_string, int start, int len);
162 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
163 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
164 static char* as_platform_dependent_str(Handle java_string, TRAPS);
165 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
166 // produce an ascii string with all other values quoted using \u####
167 static char* as_quoted_ascii(oop java_string);
168
169 // Compute the hash value for a java.lang.String object which would
170 // contain the characters passed in.
171 //
172 // As the hash value used by the String object itself, in
173 // String.hashCode(). This value is normally calculated in Java code
174 // in the String.hashCode method(), but is precomputed for String
175 // objects in the shared archive file.
176 // hash P(31) from Kernighan & Ritchie
177 //
178 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
179 static unsigned int hash_code(const jchar* s, int len) {
180 unsigned int h = 0;
181 while (len-- > 0) {
182 h = 31*h + (unsigned int) *s;
183 s++;
184 }
185 return h;
186 }
187
188 static unsigned int hash_code(const jbyte* s, int len) {
189 unsigned int h = 0;
190 while (len-- > 0) {
191 h = 31*h + (((unsigned int) *s) & 0xFF);
192 s++;
193 }
194 return h;
195 }
196
197 static unsigned int hash_code(oop java_string);
198
199 static bool equals(oop java_string, const jchar* chars, int len);
200 static bool equals(oop str1, oop str2);
201 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
202
203 // Conversion between '.' and '/' formats
204 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
205
206 // Conversion
207 static Symbol* as_symbol(oop java_string);
208 static Symbol* as_symbol_or_null(oop java_string);
209
210 // Testers
211 static bool is_instance(oop obj);
212 static inline bool is_instance_inlined(oop obj);
213
214 // Debugging
215 static void print(oop java_string, outputStream* st);
216 friend class JavaClasses;
217 friend class StringTable;
218 };
219
220
221 // Interface to java.lang.Class objects
222
223 #define CLASS_INJECTED_FIELDS(macro) \
224 macro(java_lang_Class, klass, intptr_signature, false) \
225 macro(java_lang_Class, array_klass, intptr_signature, false) \
226 macro(java_lang_Class, oop_size, int_signature, false) \
227 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
228 macro(java_lang_Class, protection_domain, object_signature, false) \
229 macro(java_lang_Class, signers, object_signature, false) \
230 macro(java_lang_Class, source_file, object_signature, false) \
231
232 class java_lang_Class : AllStatic {
233 friend class VMStructs;
234 friend class JVMCIVMStructs;
235
236 private:
237 // The fake offsets are added by the class loader when java.lang.Class is loaded
238
239 static int _klass_offset;
240 static int _array_klass_offset;
241
242 static int _oop_size_offset;
243 static int _static_oop_field_count_offset;
244
245 static int _protection_domain_offset;
246 static int _init_lock_offset;
247 static int _signers_offset;
248 static int _class_loader_offset;
249 static int _module_offset;
250 static int _component_mirror_offset;
251 static int _name_offset;
252 static int _source_file_offset;
253
254 static bool offsets_computed;
255 static int classRedefinedCount_offset;
256
257 static GrowableArray<Klass*>* _fixup_mirror_list;
258 static GrowableArray<Klass*>* _fixup_module_field_list;
259
260 static void set_init_lock(oop java_class, oop init_lock);
261 static void set_protection_domain(oop java_class, oop protection_domain);
262 static void set_class_loader(oop java_class, oop class_loader);
263 static void set_component_mirror(oop java_class, oop comp_mirror);
264 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
265 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
266 public:
267 static void allocate_fixup_lists();
268 static void compute_offsets();
269
270 // Instance creation
271 static void create_mirror(Klass* k, Handle class_loader, Handle module,
272 Handle protection_domain, TRAPS);
273 static void fixup_mirror(Klass* k, TRAPS);
274 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
275 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
276 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
277
278 // Archiving
279 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
280 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
281 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
282 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
283 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
284 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
285 Handle protection_domain,
286 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
287
288 static void fixup_module_field(Klass* k, Handle module);
289
290 // Conversion
291 static Klass* as_Klass(oop java_class);
292 static Klass* as_Klass_raw(oop java_class);
293 static void set_klass(oop java_class, Klass* klass);
294 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
295 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
296 static void print_signature(oop java_class, outputStream *st);
297 static const char* as_external_name(oop java_class);
298 // Testing
299 static bool is_instance(oop obj);
300
301 static bool is_primitive(oop java_class);
302 static BasicType primitive_type(oop java_class);
303 static oop primitive_mirror(BasicType t);
304 // JVM_NewArray support
305 static Klass* array_klass_acquire(oop java_class);
306 static void release_set_array_klass(oop java_class, Klass* klass);
307 // compiler support for class operations
308 static int klass_offset_in_bytes() { return _klass_offset; }
309 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
310 // Support for classRedefinedCount field
311 static int classRedefinedCount(oop the_class_mirror);
312 static void set_classRedefinedCount(oop the_class_mirror, int value);
313
314 // Support for embedded per-class oops
315 static oop protection_domain(oop java_class);
316 static oop init_lock(oop java_class);
317 static oop component_mirror(oop java_class);
318 static objArrayOop signers(oop java_class);
319 static void set_signers(oop java_class, objArrayOop signers);
320
321 static oop class_loader(oop java_class);
322 static void set_module(oop java_class, oop module);
323 static oop module(oop java_class);
324
325 static oop name(Handle java_class, TRAPS);
326
327 static oop source_file(oop java_class);
328 static void set_source_file(oop java_class, oop source_file);
329
330 static int oop_size(oop java_class);
331 static int oop_size_raw(oop java_class);
332 static void set_oop_size(HeapWord* java_class, int size);
333 static int static_oop_field_count(oop java_class);
334 static int static_oop_field_count_raw(oop java_class);
335 static void set_static_oop_field_count(oop java_class, int size);
336
337 static GrowableArray<Klass*>* fixup_mirror_list() {
338 return _fixup_mirror_list;
339 }
340 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
341 _fixup_mirror_list = v;
342 }
343
344 static GrowableArray<Klass*>* fixup_module_field_list() {
345 return _fixup_module_field_list;
346 }
347 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
348 _fixup_module_field_list = v;
349 }
350
351 // Debugging
352 friend class JavaClasses;
353 friend class InstanceKlass; // verification code accesses offsets
354 friend class ClassFileParser; // access to number_of_fake_fields
355 };
356
357 // Interface to java.lang.Thread objects
358
359 class java_lang_Thread : AllStatic {
360 private:
361 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
362 // so we compute the offsets at startup rather than hard-wiring them.
363 static int _name_offset;
364 static int _group_offset;
365 static int _contextClassLoader_offset;
366 static int _inheritedAccessControlContext_offset;
367 static int _priority_offset;
368 static int _eetop_offset;
369 static int _daemon_offset;
370 static int _stillborn_offset;
371 static int _stackSize_offset;
372 static int _tid_offset;
373 static int _thread_status_offset;
374 static int _park_blocker_offset;
375
376 static void compute_offsets();
377
378 public:
379 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
380
381 // Instance creation
382 static oop create();
383 // Returns the JavaThread associated with the thread obj
384 static JavaThread* thread(oop java_thread);
385 // Set JavaThread for instance
386 static void set_thread(oop java_thread, JavaThread* thread);
387 // Name
388 static oop name(oop java_thread);
389 static void set_name(oop java_thread, oop name);
390 // Priority
391 static ThreadPriority priority(oop java_thread);
392 static void set_priority(oop java_thread, ThreadPriority priority);
393 // Thread group
394 static oop threadGroup(oop java_thread);
395 // Stillborn
396 static bool is_stillborn(oop java_thread);
397 static void set_stillborn(oop java_thread);
398 // Alive (NOTE: this is not really a field, but provides the correct
399 // definition without doing a Java call)
400 static bool is_alive(oop java_thread);
401 // Daemon
402 static bool is_daemon(oop java_thread);
403 static void set_daemon(oop java_thread);
404 // Context ClassLoader
405 static oop context_class_loader(oop java_thread);
406 // Control context
407 static oop inherited_access_control_context(oop java_thread);
408 // Stack size hint
409 static jlong stackSize(oop java_thread);
410 // Thread ID
411 static jlong thread_id(oop java_thread);
412
413 // Blocker object responsible for thread parking
414 static oop park_blocker(oop java_thread);
415
416 // Java Thread Status for JVMTI and M&M use.
417 // This thread status info is saved in threadStatus field of
418 // java.lang.Thread java class.
419 enum ThreadStatus {
420 NEW = 0,
421 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
422 JVMTI_THREAD_STATE_RUNNABLE,
423 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
424 JVMTI_THREAD_STATE_WAITING +
425 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
426 JVMTI_THREAD_STATE_SLEEPING,
427 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
428 JVMTI_THREAD_STATE_WAITING +
429 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
430 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
431 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
432 JVMTI_THREAD_STATE_WAITING +
433 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
434 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
435 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
436 JVMTI_THREAD_STATE_WAITING +
437 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
438 JVMTI_THREAD_STATE_PARKED,
439 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
440 JVMTI_THREAD_STATE_WAITING +
441 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
442 JVMTI_THREAD_STATE_PARKED,
443 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
444 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
445 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
446 };
447 // Write thread status info to threadStatus field of java.lang.Thread.
448 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
449 // Read thread status info from threadStatus field of java.lang.Thread.
450 static ThreadStatus get_thread_status(oop java_thread_oop);
451
452 static const char* thread_status_name(oop java_thread_oop);
453
454 // Debugging
455 friend class JavaClasses;
456 };
457
458 // Interface to java.lang.ThreadGroup objects
459
460 class java_lang_ThreadGroup : AllStatic {
461 private:
462 static int _parent_offset;
463 static int _name_offset;
464 static int _threads_offset;
465 static int _groups_offset;
466 static int _maxPriority_offset;
467 static int _destroyed_offset;
468 static int _daemon_offset;
469 static int _nthreads_offset;
470 static int _ngroups_offset;
471
472 static void compute_offsets();
473
474 public:
475 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
476
477 // parent ThreadGroup
478 static oop parent(oop java_thread_group);
479 // name
480 static const char* name(oop java_thread_group);
481 // ("name as oop" accessor is not necessary)
482 // Number of threads in group
483 static int nthreads(oop java_thread_group);
484 // threads
485 static objArrayOop threads(oop java_thread_group);
486 // Number of threads in group
487 static int ngroups(oop java_thread_group);
488 // groups
489 static objArrayOop groups(oop java_thread_group);
490 // maxPriority in group
491 static ThreadPriority maxPriority(oop java_thread_group);
492 // Destroyed
493 static bool is_destroyed(oop java_thread_group);
494 // Daemon
495 static bool is_daemon(oop java_thread_group);
496 // Debugging
497 friend class JavaClasses;
498 };
499
500
501
502 // Interface to java.lang.Throwable objects
503
504 class java_lang_Throwable: AllStatic {
505 friend class BacktraceBuilder;
506 friend class BacktraceIterator;
507
508 private:
509 // Offsets
510 enum {
511 hc_backtrace_offset = 0,
512 hc_detailMessage_offset = 1,
513 hc_cause_offset = 2, // New since 1.4
514 hc_stackTrace_offset = 3 // New since 1.4
515 };
516 // Trace constants
517 enum {
518 trace_methods_offset = 0,
519 trace_bcis_offset = 1,
520 trace_mirrors_offset = 2,
521 trace_names_offset = 3,
522 trace_next_offset = 4,
523 trace_size = 5,
524 trace_chunk_size = 32
525 };
526
527 static int backtrace_offset;
528 static int detailMessage_offset;
529 static int stackTrace_offset;
530 static int depth_offset;
531 static int static_unassigned_stacktrace_offset;
532
533 // StackTrace (programmatic access, new since 1.4)
534 static void clear_stacktrace(oop throwable);
535 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
536 static void set_stacktrace(oop throwable, oop st_element_array);
537 static oop unassigned_stacktrace();
538
539 public:
540 // Backtrace
541 static oop backtrace(oop throwable);
542 static void set_backtrace(oop throwable, oop value);
543 static int depth(oop throwable);
544 static void set_depth(oop throwable, int value);
545 // Needed by JVMTI to filter out this internal field.
546 static int get_backtrace_offset() { return backtrace_offset;}
547 static int get_detailMessage_offset() { return detailMessage_offset;}
548 // Message
549 static oop message(oop throwable);
550 static void set_message(oop throwable, oop value);
551 static Symbol* detail_message(oop throwable);
552 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
553 static void print_stack_usage(Handle stream);
554
555 static void compute_offsets();
556 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
557
558 // Allocate space for backtrace (created but stack trace not filled in)
559 static void allocate_backtrace(Handle throwable, TRAPS);
560 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
561 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
562 // Fill in current stack trace, can cause GC
563 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
564 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
565 // Programmatic access to stack trace
566 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
567 // Printing
568 static void print(oop throwable, outputStream* st);
569 static void print_stack_trace(Handle throwable, outputStream* st);
570 static void java_printStackTrace(Handle throwable, TRAPS);
571 // Debugging
572 friend class JavaClasses;
573 };
574
575
576 // Interface to java.lang.reflect.AccessibleObject objects
577
578 class java_lang_reflect_AccessibleObject: AllStatic {
579 private:
580 // Note that to reduce dependencies on the JDK we compute these
581 // offsets at run-time.
582 static int override_offset;
583
584 static void compute_offsets();
585
586 public:
587 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
588
589 // Accessors
590 static jboolean override(oop reflect);
591 static void set_override(oop reflect, jboolean value);
592
593 // Debugging
594 friend class JavaClasses;
595 };
596
597
598 // Interface to java.lang.reflect.Method objects
599
600 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
601 private:
602 // Note that to reduce dependencies on the JDK we compute these
603 // offsets at run-time.
604 static int clazz_offset;
605 static int name_offset;
606 static int returnType_offset;
607 static int parameterTypes_offset;
608 static int exceptionTypes_offset;
609 static int slot_offset;
610 static int modifiers_offset;
611 static int signature_offset;
612 static int annotations_offset;
613 static int parameter_annotations_offset;
614 static int annotation_default_offset;
615
616 static void compute_offsets();
617 public:
618 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
619
620 // Allocation
621 static Handle create(TRAPS);
622
623 // Accessors
624 static oop clazz(oop reflect);
625 static void set_clazz(oop reflect, oop value);
626
627 static void set_name(oop method, oop value);
628
629 static oop return_type(oop method);
630 static void set_return_type(oop method, oop value);
631
632 static oop parameter_types(oop method);
633 static void set_parameter_types(oop method, oop value);
634
635 static int slot(oop reflect);
636 static void set_slot(oop reflect, int value);
637
638 static void set_exception_types(oop method, oop value);
639 static void set_modifiers(oop method, int value);
640 static void set_signature(oop method, oop value);
641 static void set_annotations(oop method, oop value);
642 static void set_parameter_annotations(oop method, oop value);
643 static void set_annotation_default(oop method, oop value);
644
645 // Debugging
646 friend class JavaClasses;
647 };
648
649
650 // Interface to java.lang.reflect.Constructor objects
651
652 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
653 private:
654 // Note that to reduce dependencies on the JDK we compute these
655 // offsets at run-time.
656 static int clazz_offset;
657 static int parameterTypes_offset;
658 static int exceptionTypes_offset;
659 static int slot_offset;
660 static int modifiers_offset;
661 static int signature_offset;
662 static int annotations_offset;
663 static int parameter_annotations_offset;
664
665 static void compute_offsets();
666 public:
667 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
668
669 // Allocation
670 static Handle create(TRAPS);
671
672 // Accessors
673 static oop clazz(oop reflect);
674 static void set_clazz(oop reflect, oop value);
675
676 static oop parameter_types(oop constructor);
677 static void set_parameter_types(oop constructor, oop value);
678
679 static int slot(oop reflect);
680 static void set_slot(oop reflect, int value);
681
682 static void set_exception_types(oop constructor, oop value);
683 static void set_modifiers(oop constructor, int value);
684 static void set_signature(oop constructor, oop value);
685 static void set_annotations(oop constructor, oop value);
686 static void set_parameter_annotations(oop method, oop value);
687
688 // Debugging
689 friend class JavaClasses;
690 };
691
692
693 // Interface to java.lang.reflect.Field objects
694
695 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
696 private:
697 // Note that to reduce dependencies on the JDK we compute these
698 // offsets at run-time.
699 static int clazz_offset;
700 static int name_offset;
701 static int type_offset;
702 static int slot_offset;
703 static int modifiers_offset;
704 static int signature_offset;
705 static int annotations_offset;
706
707 static void compute_offsets();
708
709 public:
710 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
711
712 // Allocation
713 static Handle create(TRAPS);
714
715 // Accessors
716 static oop clazz(oop reflect);
717 static void set_clazz(oop reflect, oop value);
718
719 static oop name(oop field);
720 static void set_name(oop field, oop value);
721
722 static oop type(oop field);
723 static void set_type(oop field, oop value);
724
725 static int slot(oop reflect);
726 static void set_slot(oop reflect, int value);
727
728 static int modifiers(oop field);
729 static void set_modifiers(oop field, int value);
730
731 static void set_signature(oop constructor, oop value);
732 static void set_annotations(oop constructor, oop value);
733 static void set_parameter_annotations(oop method, oop value);
734 static void set_annotation_default(oop method, oop value);
735
736 // Debugging
737 friend class JavaClasses;
738 };
739
740 class java_lang_reflect_Parameter {
741 private:
742 // Note that to reduce dependencies on the JDK we compute these
743 // offsets at run-time.
744 static int name_offset;
745 static int modifiers_offset;
746 static int index_offset;
747 static int executable_offset;
748
749 static void compute_offsets();
750
751 public:
752 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
753
754 // Allocation
755 static Handle create(TRAPS);
756
757 // Accessors
758 static oop name(oop field);
759 static void set_name(oop field, oop value);
760
761 static int index(oop reflect);
762 static void set_index(oop reflect, int value);
763
764 static int modifiers(oop reflect);
765 static void set_modifiers(oop reflect, int value);
766
767 static oop executable(oop constructor);
768 static void set_executable(oop constructor, oop value);
769
770 friend class JavaClasses;
771 };
772
773 #define MODULE_INJECTED_FIELDS(macro) \
774 macro(java_lang_Module, module_entry, intptr_signature, false)
775
776 class java_lang_Module {
777 private:
778 static int loader_offset;
779 static int name_offset;
780 static int _module_entry_offset;
781 static void compute_offsets();
782
783 public:
784 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
785
786 // Allocation
787 static Handle create(Handle loader, Handle module_name, TRAPS);
788
789 // Testers
790 static bool is_instance(oop obj);
791
792 // Accessors
793 static oop loader(oop module);
794 static void set_loader(oop module, oop value);
795
796 static oop name(oop module);
797 static void set_name(oop module, oop value);
798
799 static ModuleEntry* module_entry(oop module);
800 static void set_module_entry(oop module, ModuleEntry* module_entry);
801
802 friend class JavaClasses;
803 };
804
805 // Interface to jdk.internal.reflect.ConstantPool objects
806 class reflect_ConstantPool {
807 private:
808 // Note that to reduce dependencies on the JDK we compute these
809 // offsets at run-time.
810 static int _oop_offset;
811
812 static void compute_offsets();
813
814 public:
815 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
816
817 // Allocation
818 static Handle create(TRAPS);
819
820 // Accessors
821 static void set_cp(oop reflect, ConstantPool* value);
822 static int oop_offset() {
823 return _oop_offset;
824 }
825
826 static ConstantPool* get_cp(oop reflect);
827
828 // Debugging
829 friend class JavaClasses;
830 };
831
832 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
833 class reflect_UnsafeStaticFieldAccessorImpl {
834 private:
835 static int _base_offset;
836 static void compute_offsets();
837
838 public:
839 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
840
841 static int base_offset() {
842 return _base_offset;
843 }
844
845 // Debugging
846 friend class JavaClasses;
847 };
848
849 // Interface to java.lang primitive type boxing objects:
850 // - java.lang.Boolean
851 // - java.lang.Character
852 // - java.lang.Float
853 // - java.lang.Double
854 // - java.lang.Byte
855 // - java.lang.Short
856 // - java.lang.Integer
857 // - java.lang.Long
858
859 // This could be separated out into 8 individual classes.
860
861 class java_lang_boxing_object: AllStatic {
862 private:
863 enum {
864 hc_value_offset = 0
865 };
866 static int value_offset;
867 static int long_value_offset;
868
869 static oop initialize_and_allocate(BasicType type, TRAPS);
870 public:
871 // Allocation. Returns a boxed value, or NULL for invalid type.
872 static oop create(BasicType type, jvalue* value, TRAPS);
873 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
874 static BasicType get_value(oop box, jvalue* value);
875 static BasicType set_value(oop box, jvalue* value);
876 static BasicType basic_type(oop box);
877 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
878 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
879 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
880 static void print(BasicType type, jvalue* value, outputStream* st);
881
882 static int value_offset_in_bytes(BasicType type) {
883 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
884 value_offset;
885 }
886
887 // Debugging
888 friend class JavaClasses;
889 };
890
891
892
893 // Interface to java.lang.ref.Reference objects
894
895 class java_lang_ref_Reference: AllStatic {
896 public:
897 enum {
898 hc_referent_offset = 0,
899 hc_queue_offset = 1,
900 hc_next_offset = 2,
901 hc_discovered_offset = 3 // Is not last, see SoftRefs.
902 };
903
904 static int referent_offset;
905 static int queue_offset;
906 static int next_offset;
907 static int discovered_offset;
908
909 // Accessors
910 static inline oop referent(oop ref);
911 static inline void set_referent(oop ref, oop value);
912 static inline void set_referent_raw(oop ref, oop value);
913 static inline HeapWord* referent_addr_raw(oop ref);
914 static inline oop next(oop ref);
915 static inline void set_next(oop ref, oop value);
916 static inline void set_next_raw(oop ref, oop value);
917 static inline HeapWord* next_addr_raw(oop ref);
918 static inline oop discovered(oop ref);
919 static inline void set_discovered(oop ref, oop value);
920 static inline void set_discovered_raw(oop ref, oop value);
921 static inline HeapWord* discovered_addr_raw(oop ref);
922 static inline oop queue(oop ref);
923 static inline void set_queue(oop ref, oop value);
924 static bool is_referent_field(oop obj, ptrdiff_t offset);
925 static inline bool is_final(oop ref);
926 static inline bool is_phantom(oop ref);
927 };
928
929
930 // Interface to java.lang.ref.SoftReference objects
931
932 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
933 public:
934 static int timestamp_offset;
935 static int static_clock_offset;
936
937 // Accessors
938 static jlong timestamp(oop ref);
939
940 // Accessors for statics
941 static jlong clock();
942 static void set_clock(jlong value);
943
944 static void compute_offsets();
945 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
946 };
947
948 // Interface to java.lang.invoke.MethodHandle objects
949
950 class MethodHandleEntry;
951
952 class java_lang_invoke_MethodHandle: AllStatic {
953 friend class JavaClasses;
954
955 private:
956 static int _type_offset; // the MethodType of this MH
957 static int _form_offset; // the LambdaForm of this MH
958
959 static void compute_offsets();
960
961 public:
962 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
963
964 // Accessors
965 static oop type(oop mh);
966 static void set_type(oop mh, oop mtype);
967
968 static oop form(oop mh);
969 static void set_form(oop mh, oop lform);
970
971 // Testers
972 static bool is_subclass(Klass* klass) {
973 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
974 }
975 static bool is_instance(oop obj);
976
977 // Accessors for code generation:
978 static int type_offset_in_bytes() { return _type_offset; }
979 static int form_offset_in_bytes() { return _form_offset; }
980 };
981
982 // Interface to java.lang.invoke.DirectMethodHandle objects
983
984 class java_lang_invoke_DirectMethodHandle: AllStatic {
985 friend class JavaClasses;
986
987 private:
988 static int _member_offset; // the MemberName of this DMH
989
990 static void compute_offsets();
991
992 public:
993 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
994
995 // Accessors
996 static oop member(oop mh);
997
998 // Testers
999 static bool is_subclass(Klass* klass) {
1000 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1001 }
1002 static bool is_instance(oop obj);
1003
1004 // Accessors for code generation:
1005 static int member_offset_in_bytes() { return _member_offset; }
1006 };
1007
1008 // Interface to java.lang.invoke.LambdaForm objects
1009 // (These are a private interface for managing adapter code generation.)
1010
1011 class java_lang_invoke_LambdaForm: AllStatic {
1012 friend class JavaClasses;
1013
1014 private:
1015 static int _vmentry_offset; // type is MemberName
1016
1017 static void compute_offsets();
1018
1019 public:
1020 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1021
1022 // Accessors
1023 static oop vmentry(oop lform);
1024 static void set_vmentry(oop lform, oop invoker);
1025
1026 // Testers
1027 static bool is_subclass(Klass* klass) {
1028 return SystemDictionary::LambdaForm_klass() != NULL &&
1029 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1030 }
1031 static bool is_instance(oop obj);
1032
1033 // Accessors for code generation:
1034 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1035 };
1036
1037
1038 // Interface to java.lang.invoke.MemberName objects
1039 // (These are a private interface for Java code to query the class hierarchy.)
1040
1041 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1042 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1043 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1044
1045 class java_lang_invoke_ResolvedMethodName : AllStatic {
1046 friend class JavaClasses;
1047
1048 static int _vmtarget_offset;
1049 static int _vmholder_offset;
1050
1051 static void compute_offsets();
1052 public:
1053 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1054
1055 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1056
1057 static Method* vmtarget(oop resolved_method);
1058 static void set_vmtarget(oop resolved_method, Method* method);
1059
1060 static void set_vmholder(oop resolved_method, oop holder);
1061
1062 // find or create resolved member name
1063 static oop find_resolved_method(const methodHandle& m, TRAPS);
1064
1065 static bool is_instance(oop resolved_method);
1066 };
1067
1068
1069 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1070 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1071
1072
1073 class java_lang_invoke_MemberName: AllStatic {
1074 friend class JavaClasses;
1075
1076 private:
1077 // From java.lang.invoke.MemberName:
1078 // private Class<?> clazz; // class in which the method is defined
1079 // private String name; // may be null if not yet materialized
1080 // private Object type; // may be null if not yet materialized
1081 // private int flags; // modifier bits; see reflect.Modifier
1082 // private ResolvedMethodName method; // holds VM-specific target value
1083 // private intptr_t vmindex; // member index within class or interface
1084 static int _clazz_offset;
1085 static int _name_offset;
1086 static int _type_offset;
1087 static int _flags_offset;
1088 static int _method_offset;
1089 static int _vmindex_offset;
1090
1091 static void compute_offsets();
1092
1093 public:
1094 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1095 // Accessors
1096 static oop clazz(oop mname);
1097 static void set_clazz(oop mname, oop clazz);
1098
1099 static oop type(oop mname);
1100 static void set_type(oop mname, oop type);
1101
1102 static oop name(oop mname);
1103 static void set_name(oop mname, oop name);
1104
1105 static int flags(oop mname);
1106 static void set_flags(oop mname, int flags);
1107
1108 // Link through ResolvedMethodName field to get Method*
1109 static Method* vmtarget(oop mname);
1110 static void set_method(oop mname, oop method);
1111
1112 static intptr_t vmindex(oop mname);
1113 static void set_vmindex(oop mname, intptr_t index);
1114
1115 // Testers
1116 static bool is_subclass(Klass* klass) {
1117 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1118 }
1119 static bool is_instance(oop obj);
1120
1121 static bool is_method(oop obj);
1122
1123 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1124 enum {
1125 MN_IS_METHOD = 0x00010000, // method (not constructor)
1126 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1127 MN_IS_FIELD = 0x00040000, // field
1128 MN_IS_TYPE = 0x00080000, // nested type
1129 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1130 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1131 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1132 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1133 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1134 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1135 };
1136
1137 // Accessors for code generation:
1138 static int clazz_offset_in_bytes() { return _clazz_offset; }
1139 static int type_offset_in_bytes() { return _type_offset; }
1140 static int name_offset_in_bytes() { return _name_offset; }
1141 static int flags_offset_in_bytes() { return _flags_offset; }
1142 static int method_offset_in_bytes() { return _method_offset; }
1143 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1144 };
1145
1146
1147 // Interface to java.lang.invoke.MethodType objects
1148
1149 class java_lang_invoke_MethodType: AllStatic {
1150 friend class JavaClasses;
1151
1152 private:
1153 static int _rtype_offset;
1154 static int _ptypes_offset;
1155
1156 static void compute_offsets();
1157
1158 public:
1159 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1160 // Accessors
1161 static oop rtype(oop mt);
1162 static objArrayOop ptypes(oop mt);
1163
1164 static oop ptype(oop mt, int index);
1165 static int ptype_count(oop mt);
1166
1167 static int ptype_slot_count(oop mt); // extra counts for long/double
1168 static int rtype_slot_count(oop mt); // extra counts for long/double
1169
1170 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1171 static void print_signature(oop mt, outputStream* st);
1172
1173 static bool is_instance(oop obj);
1174
1175 static bool equals(oop mt1, oop mt2);
1176
1177 // Accessors for code generation:
1178 static int rtype_offset_in_bytes() { return _rtype_offset; }
1179 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1180 };
1181
1182
1183 // Interface to java.lang.invoke.CallSite objects
1184
1185 class java_lang_invoke_CallSite: AllStatic {
1186 friend class JavaClasses;
1187
1188 private:
1189 static int _target_offset;
1190 static int _context_offset;
1191
1192 static void compute_offsets();
1193
1194 public:
1195 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1196 // Accessors
1197 static oop target( oop site);
1198 static void set_target( oop site, oop target);
1199 static void set_target_volatile( oop site, oop target);
1200
1201 static oop context_no_keepalive(oop site);
1202
1203 // Testers
1204 static bool is_subclass(Klass* klass) {
1205 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1206 }
1207 static bool is_instance(oop obj);
1208
1209 // Accessors for code generation:
1210 static int target_offset_in_bytes() { return _target_offset; }
1211 };
1212
1213 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1214
1215 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1216 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1217 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1218
1219 class DependencyContext;
1220
1221 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1222 friend class JavaClasses;
1223
1224 private:
1225 static int _vmdependencies_offset;
1226 static int _last_cleanup_offset;
1227
1228 static void compute_offsets();
1229
1230 public:
1231 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1232 // Accessors
1233 static DependencyContext vmdependencies(oop context);
1234
1235 // Testers
1236 static bool is_subclass(Klass* klass) {
1237 return klass->is_subclass_of(SystemDictionary::Context_klass());
1238 }
1239 static bool is_instance(oop obj);
1240 };
1241
1242 // Interface to java.security.AccessControlContext objects
1243
1244 class java_security_AccessControlContext: AllStatic {
1245 private:
1246 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1247 // so we compute the offsets at startup rather than hard-wiring them.
1248 static int _context_offset;
1249 static int _privilegedContext_offset;
1250 static int _isPrivileged_offset;
1251 static int _isAuthorized_offset;
1252
1253 static void compute_offsets();
1254 public:
1255 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1256 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1257
1258 // Debugging/initialization
1259 friend class JavaClasses;
1260 };
1261
1262
1263 // Interface to java.lang.ClassLoader objects
1264
1265 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1266 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1267
1268 class java_lang_ClassLoader : AllStatic {
1269 private:
1270 static int _loader_data_offset;
1271 static bool offsets_computed;
1272 static int parent_offset;
1273 static int parallelCapable_offset;
1274 static int name_offset;
1275 static int nameAndId_offset;
1276 static int unnamedModule_offset;
1277
1278 public:
1279 static void compute_offsets();
1280 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1281
1282 static ClassLoaderData* loader_data_acquire(oop loader);
1283 static ClassLoaderData* loader_data_raw(oop loader);
1284 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1285
1286 static oop parent(oop loader);
1287 static oop name(oop loader);
1288 static oop nameAndId(oop loader);
1289 static bool isAncestor(oop loader, oop cl);
1290
1291 // Support for parallelCapable field
1292 static bool parallelCapable(oop the_class_mirror);
1293
1294 static bool is_trusted_loader(oop loader);
1295
1296 // Return true if this is one of the class loaders associated with
1297 // the generated bytecodes for reflection.
1298 static bool is_reflection_class_loader(oop loader);
1299
1300 // Fix for 4474172
1301 static oop non_reflection_class_loader(oop loader);
1302
1303 // Testers
1304 static bool is_subclass(Klass* klass) {
1305 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1306 }
1307 static bool is_instance(oop obj);
1308
1309 static oop unnamedModule(oop loader);
1310
1311 // Debugging
1312 friend class JavaClasses;
1313 friend class ClassFileParser; // access to number_of_fake_fields
1314 };
1315
1316
1317 // Interface to java.lang.System objects
1318
1319 class java_lang_System : AllStatic {
1320 private:
1321 static int static_in_offset;
1322 static int static_out_offset;
1323 static int static_err_offset;
1324 static int static_security_offset;
1325
1326 public:
1327 static int in_offset_in_bytes();
1328 static int out_offset_in_bytes();
1329 static int err_offset_in_bytes();
1330
1331 static void compute_offsets();
1332 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1333
1334 // Debugging
1335 friend class JavaClasses;
1336 };
1337
1338
1339 // Interface to java.lang.StackTraceElement objects
1340
1341 class java_lang_StackTraceElement: AllStatic {
1342 private:
1343 static int declaringClassObject_offset;
1344 static int classLoaderName_offset;
1345 static int moduleName_offset;
1346 static int moduleVersion_offset;
1347 static int declaringClass_offset;
1348 static int methodName_offset;
1349 static int fileName_offset;
1350 static int lineNumber_offset;
1351
1352 // Setters
1353 static void set_classLoaderName(oop element, oop value);
1354 static void set_moduleName(oop element, oop value);
1355 static void set_moduleVersion(oop element, oop value);
1356 static void set_declaringClass(oop element, oop value);
1357 static void set_methodName(oop element, oop value);
1358 static void set_fileName(oop element, oop value);
1359 static void set_lineNumber(oop element, int value);
1360 static void set_declaringClassObject(oop element, oop value);
1361
1362 public:
1363 // Create an instance of StackTraceElement
1364 static oop create(const methodHandle& method, int bci, TRAPS);
1365
1366 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1367 int version, int bci, Symbol* name, TRAPS);
1368
1369 static void compute_offsets();
1370 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1371
1372 #if INCLUDE_JVMCI
1373 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1374 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1375 #endif
1376
1377 // Debugging
1378 friend class JavaClasses;
1379 };
1380
1381
1382 class Backtrace: AllStatic {
1383 public:
1384 // Helper backtrace functions to store bci|version together.
1385 static int merge_bci_and_version(int bci, int version);
1386 static int merge_mid_and_cpref(int mid, int cpref);
1387 static int bci_at(unsigned int merged);
1388 static int version_at(unsigned int merged);
1389 static int mid_at(unsigned int merged);
1390 static int cpref_at(unsigned int merged);
1391 static int get_line_number(const methodHandle& method, int bci);
1392 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1393
1394 // Debugging
1395 friend class JavaClasses;
1396 };
1397
1398 // Interface to java.lang.StackFrameInfo objects
1399
1400 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1401 macro(java_lang_StackFrameInfo, version, short_signature, false)
1402
1403 class java_lang_StackFrameInfo: AllStatic {
1404 private:
1405 static int _memberName_offset;
1406 static int _bci_offset;
1407 static int _version_offset;
1408
1409 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1410
1411 public:
1412 // Setters
1413 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1414 static void set_bci(oop info, int value);
1415
1416 static void set_version(oop info, short value);
1417
1418 static void compute_offsets();
1419 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1420
1421 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1422
1423 // Debugging
1424 friend class JavaClasses;
1425 };
1426
1427 class java_lang_LiveStackFrameInfo: AllStatic {
1428 private:
1429 static int _monitors_offset;
1430 static int _locals_offset;
1431 static int _operands_offset;
1432 static int _mode_offset;
1433
1434 public:
1435 static void set_monitors(oop info, oop value);
1436 static void set_locals(oop info, oop value);
1437 static void set_operands(oop info, oop value);
1438 static void set_mode(oop info, int value);
1439
1440 static void compute_offsets();
1441 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1442
1443 // Debugging
1444 friend class JavaClasses;
1445 };
1446
1447 // Interface to java.lang.AssertionStatusDirectives objects
1448
1449 class java_lang_AssertionStatusDirectives: AllStatic {
1450 private:
1451 static int classes_offset;
1452 static int classEnabled_offset;
1453 static int packages_offset;
1454 static int packageEnabled_offset;
1455 static int deflt_offset;
1456
1457 public:
1458 // Setters
1459 static void set_classes(oop obj, oop val);
1460 static void set_classEnabled(oop obj, oop val);
1461 static void set_packages(oop obj, oop val);
1462 static void set_packageEnabled(oop obj, oop val);
1463 static void set_deflt(oop obj, bool val);
1464
1465 static void compute_offsets();
1466 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1467
1468 // Debugging
1469 friend class JavaClasses;
1470 };
1471
1472
1473 class java_nio_Buffer: AllStatic {
1474 private:
1475 static int _limit_offset;
1476
1477 public:
1478 static int limit_offset();
1479 static void compute_offsets();
1480 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1481 };
1482
1483 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1484 private:
1485 static int _owner_offset;
1486 public:
1487 static void compute_offsets();
1488 static oop get_owner_threadObj(oop obj);
1489 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1490 };
1491
1492 // Interface to jdk.internal.misc.UnsafeConsants
1493
1494 class jdk_internal_misc_UnsafeConstants : AllStatic {
1495 public:
1496 static void set_unsafe_constants();
1497 static void compute_offsets() { }
1498 static void serialize_offsets(SerializeClosure* f) { }
1499 };
1500
1501 class java_lang_Integer : AllStatic {
1502 public:
1503 static jint value(oop obj);
1504 };
1505
1506 class java_lang_Long : AllStatic {
1507 public:
1508 static jlong value(oop obj);
1509 };
1510
1511 class java_lang_Character : AllStatic {
1512 public:
1513 static jchar value(oop obj);
1514 };
1515
1516 class java_lang_Short : AllStatic {
1517 public:
1518 static jshort value(oop obj);
1519 };
1520
1521 class java_lang_Byte : AllStatic {
1522 public:
1523 static jbyte value(oop obj);
1524 };
1525
1526 class java_lang_Boolean : AllStatic {
1527 private:
1528 static int _static_TRUE_offset;
1529 static int _static_FALSE_offset;
1530 public:
1531 static Symbol* symbol();
1532 static void compute_offsets(InstanceKlass* k);
1533 static oop get_TRUE(InstanceKlass *k);
1534 static oop get_FALSE(InstanceKlass *k);
1535 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1536 static jboolean value(oop obj);
1537 };
1538
1539 class java_lang_Integer_IntegerCache : AllStatic {
1540 private:
1541 static int _static_cache_offset;
1542 public:
1543 static Symbol* symbol();
1544 static void compute_offsets(InstanceKlass* k);
1545 static objArrayOop cache(InstanceKlass *k);
1546 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1547 };
1548
1549 class java_lang_Long_LongCache : AllStatic {
1550 private:
1551 static int _static_cache_offset;
1552 public:
1553 static Symbol* symbol();
1554 static void compute_offsets(InstanceKlass* k);
1555 static objArrayOop cache(InstanceKlass *k);
1556 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1557 };
1558
1559 class java_lang_Character_CharacterCache : AllStatic {
1560 private:
1561 static int _static_cache_offset;
1562 public:
1563 static Symbol* symbol();
1564 static void compute_offsets(InstanceKlass* k);
1565 static objArrayOop cache(InstanceKlass *k);
1566 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1567 };
1568
1569 class java_lang_Short_ShortCache : AllStatic {
1570 private:
1571 static int _static_cache_offset;
1572 public:
1573 static Symbol* symbol();
1574 static void compute_offsets(InstanceKlass* k);
1575 static objArrayOop cache(InstanceKlass *k);
1576 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1577 };
1578
1579 class java_lang_Byte_ByteCache : AllStatic {
1580 private:
1581 static int _static_cache_offset;
1582 public:
1583 static Symbol* symbol();
1584 static void compute_offsets(InstanceKlass* k);
1585 static objArrayOop cache(InstanceKlass *k);
1586 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1587 };
1588
1589 // Use to declare fields that need to be injected into Java classes
1590 // for the JVM to use. The name_index and signature_index are
1591 // declared in vmSymbols. The may_be_java flag is used to declare
1592 // fields that might already exist in Java but should be injected if
1593 // they don't. Otherwise the field is unconditionally injected and
1594 // the JVM uses the injected one. This is to ensure that name
1595 // collisions don't occur. In general may_be_java should be false
1596 // unless there's a good reason.
1597
1598 class InjectedField {
1599 public:
1600 const SystemDictionary::WKID klass_id;
1601 const vmSymbols::SID name_index;
1602 const vmSymbols::SID signature_index;
1603 const bool may_be_java;
1604
1605
1606 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1607 Symbol* name() const { return lookup_symbol(name_index); }
1608 Symbol* signature() const { return lookup_symbol(signature_index); }
1609
1610 int compute_offset();
1611
1612 // Find the Symbol for this index
1613 static Symbol* lookup_symbol(int symbol_index) {
1614 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1615 }
1616 };
1617
1618 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1619 klass##_##name##_enum,
1620
1621 #define ALL_INJECTED_FIELDS(macro) \
1622 CLASS_INJECTED_FIELDS(macro) \
1623 CLASSLOADER_INJECTED_FIELDS(macro) \
1624 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1625 MEMBERNAME_INJECTED_FIELDS(macro) \
1626 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1627 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1628 MODULE_INJECTED_FIELDS(macro)
1629
1630 // Interface to hard-coded offset checking
1631
1632 class JavaClasses : AllStatic {
1633 private:
1634
1635 static InjectedField _injected_fields[];
1636
1637 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1638 public:
1639 enum InjectedFieldID {
1640 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1641 MAX_enum
1642 };
1643
1644 static int compute_injected_offset(InjectedFieldID id);
1645
1646 static void compute_hard_coded_offsets();
1647 static void compute_offsets();
1648 static void check_offsets() PRODUCT_RETURN;
1649 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1650 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1651 };
1652
1653 #undef DECLARE_INJECTED_FIELD_ENUM
1654
1655 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP