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.
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23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
70 f(java_security_AccessControlContext) \
71 f(java_lang_reflect_AccessibleObject) \
72 f(java_lang_reflect_Method) \
73 f(java_lang_reflect_Constructor) \
74 f(java_lang_reflect_Field) \
75 f(java_nio_Buffer) \
76 f(reflect_ConstantPool) \
77 f(reflect_UnsafeStaticFieldAccessorImpl) \
78 f(java_lang_reflect_Parameter) \
79 f(java_lang_Module) \
80 f(java_lang_StackTraceElement) \
81 f(java_lang_StackFrameInfo) \
82 f(java_lang_LiveStackFrameInfo) \
83 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
84 f(jdk_internal_misc_UnsafeConstants) \
85 //end
86
87 #define BASIC_JAVA_CLASSES_DO(f) \
88 BASIC_JAVA_CLASSES_DO_PART1(f) \
89 BASIC_JAVA_CLASSES_DO_PART2(f)
90
91 // Interface to java.lang.String objects
92
93 class java_lang_String : AllStatic {
94 private:
95 static int value_offset;
96 static int hash_offset;
97 static int hashIsZero_offset;
98 static int coder_offset;
99
100 static bool initialized;
101
102 static Handle basic_create(int length, bool byte_arr, TRAPS);
103
104 static inline void set_coder(oop string, jbyte coder);
105
106 public:
107
108 // Coders
109 enum Coder {
110 CODER_LATIN1 = 0,
111 CODER_UTF16 = 1
112 };
113
114 static void compute_offsets();
115 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
116
117 // Instance creation
118 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
119 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
120 static Handle create_from_str(const char* utf8_str, TRAPS);
121 static oop create_oop_from_str(const char* utf8_str, TRAPS);
122 static Handle create_from_symbol(Symbol* symbol, TRAPS);
123 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
124 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
125
126 static void set_compact_strings(bool value);
127
128 static int value_offset_in_bytes() {
129 assert(initialized && (value_offset > 0), "Must be initialized");
130 return value_offset;
131 }
132 static int hash_offset_in_bytes() {
133 assert(initialized && (hash_offset > 0), "Must be initialized");
134 return hash_offset;
135 }
136 static int hashIsZero_offset_in_bytes() {
137 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
138 return hashIsZero_offset;
139 }
140 static int coder_offset_in_bytes() {
141 assert(initialized && (coder_offset > 0), "Must be initialized");
142 return coder_offset;
143 }
144
145 static inline void set_value_raw(oop string, typeArrayOop buffer);
146 static inline void set_value(oop string, typeArrayOop buffer);
147
148 // Accessors
149 static inline typeArrayOop value(oop java_string);
150 static inline typeArrayOop value_no_keepalive(oop java_string);
151 static inline bool hash_is_set(oop string);
152 static inline bool is_latin1(oop java_string);
153 static inline int length(oop java_string);
154 static inline int length(oop java_string, typeArrayOop string_value);
155 static int utf8_length(oop java_string);
156 static int utf8_length(oop java_string, typeArrayOop string_value);
157
158 // String converters
159 static char* as_utf8_string(oop java_string);
160 static char* as_utf8_string(oop java_string, char* buf, int buflen);
161 static char* as_utf8_string(oop java_string, int start, int len);
162 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
163 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
164 static char* as_platform_dependent_str(Handle java_string, TRAPS);
165 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
166 // produce an ascii string with all other values quoted using \u####
167 static char* as_quoted_ascii(oop java_string);
168
169 // Compute the hash value for a java.lang.String object which would
170 // contain the characters passed in.
171 //
172 // As the hash value used by the String object itself, in
173 // String.hashCode(). This value is normally calculated in Java code
174 // in the String.hashCode method(), but is precomputed for String
175 // objects in the shared archive file.
176 // hash P(31) from Kernighan & Ritchie
177 //
178 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
179 static unsigned int hash_code(const jchar* s, int len) {
180 unsigned int h = 0;
181 while (len-- > 0) {
182 h = 31*h + (unsigned int) *s;
183 s++;
184 }
185 return h;
186 }
187
188 static unsigned int hash_code(const jbyte* s, int len) {
189 unsigned int h = 0;
190 while (len-- > 0) {
191 h = 31*h + (((unsigned int) *s) & 0xFF);
192 s++;
193 }
194 return h;
195 }
196
197 static unsigned int hash_code(oop java_string);
198
199 static bool equals(oop java_string, const jchar* chars, int len);
200 static bool equals(oop str1, oop str2);
201 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
202
203 // Conversion between '.' and '/' formats
204 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
205 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
206
207 // Conversion
208 static Symbol* as_symbol(oop java_string);
209 static Symbol* as_symbol_or_null(oop java_string);
210
211 // Testers
212 static bool is_instance(oop obj);
213 static inline bool is_instance_inlined(oop obj);
214
215 // Debugging
216 static void print(oop java_string, outputStream* st);
217 friend class JavaClasses;
218 friend class StringTable;
219 };
220
221
222 // Interface to java.lang.Class objects
223
224 #define CLASS_INJECTED_FIELDS(macro) \
225 macro(java_lang_Class, klass, intptr_signature, false) \
226 macro(java_lang_Class, array_klass, intptr_signature, false) \
227 macro(java_lang_Class, oop_size, int_signature, false) \
228 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
229 macro(java_lang_Class, protection_domain, object_signature, false) \
230 macro(java_lang_Class, signers, object_signature, false) \
231 macro(java_lang_Class, source_file, object_signature, false) \
232
233 class java_lang_Class : AllStatic {
234 friend class VMStructs;
235 friend class JVMCIVMStructs;
236
237 private:
238 // The fake offsets are added by the class loader when java.lang.Class is loaded
239
240 static int _klass_offset;
241 static int _array_klass_offset;
242
243 static int _oop_size_offset;
244 static int _static_oop_field_count_offset;
245
246 static int _protection_domain_offset;
247 static int _init_lock_offset;
248 static int _signers_offset;
249 static int _class_loader_offset;
250 static int _module_offset;
251 static int _component_mirror_offset;
252 static int _name_offset;
253 static int _source_file_offset;
254 static int _inline_mirror_offset;
255 static int _indirect_mirror_offset;
256
257 static bool offsets_computed;
258 static int classRedefinedCount_offset;
259
260 static GrowableArray<Klass*>* _fixup_mirror_list;
261 static GrowableArray<Klass*>* _fixup_module_field_list;
262
263 static void set_init_lock(oop java_class, oop init_lock);
264 static void set_protection_domain(oop java_class, oop protection_domain);
265 static void set_class_loader(oop java_class, oop class_loader);
266 static void set_component_mirror(oop java_class, oop comp_mirror);
267 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
268 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
269 public:
270 static void allocate_fixup_lists();
271 static void compute_offsets();
272
273 // Instance creation
274 static void create_mirror(Klass* k, Handle class_loader, Handle module,
275 Handle protection_domain, TRAPS);
276 static void fixup_mirror(Klass* k, TRAPS);
277 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
278 static oop create_indirect_type_mirror(Klass* k, Handle mirror, TRAPS);
279
280 // Archiving
281 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
282 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
283 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
284 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
285 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
286 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
287 Handle protection_domain,
288 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
289
290 static void fixup_module_field(Klass* k, Handle module);
291
292 // Conversion
293 static Klass* as_Klass(oop java_class);
294 static Klass* as_Klass_raw(oop java_class);
295 static void set_klass(oop java_class, Klass* klass);
296 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
297 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
298 static void print_signature(oop java_class, outputStream *st);
299 static const char* as_external_name(oop java_class);
300 // Testing
301 static bool is_instance(oop obj);
302
303 static bool is_primitive(oop java_class);
304 static BasicType primitive_type(oop java_class);
305 static oop primitive_mirror(BasicType t);
306 // JVM_NewArray support
307 static Klass* array_klass_acquire(oop java_class);
308 static void release_set_array_klass(oop java_class, Klass* klass);
309 // compiler support for class operations
310 static int klass_offset_in_bytes() { return _klass_offset; }
311 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
312 static int inline_mirror_offset_in_bytes() { return _inline_mirror_offset; }
313 static int component_mirror_offset_in_bytes() { return _component_mirror_offset; }
314 // Support for classRedefinedCount field
315 static int classRedefinedCount(oop the_class_mirror);
316 static void set_classRedefinedCount(oop the_class_mirror, int value);
317
318 // Support for embedded per-class oops
319 static oop protection_domain(oop java_class);
320 static oop init_lock(oop java_class);
321 static oop component_mirror(oop java_class);
322 static objArrayOop signers(oop java_class);
323 static void set_signers(oop java_class, objArrayOop signers);
324
325 static oop class_loader(oop java_class);
326 static void set_module(oop java_class, oop module);
327 static oop module(oop java_class);
328
329 static void set_indirect_type_mirror(oop java_class, oop mirror);
330 static oop indirect_type_mirror(oop java_class);
331 static bool is_indirect_type(oop java_class) { // Must match "Class.isIndirectType()"
332 return indirect_type_mirror(java_class) == NULL || oopDesc::equals(indirect_type_mirror(java_class), java_class);
333 }
334
335 static void set_inline_type_mirror(oop java_class, oop mirror);
336 static oop inline_type_mirror(oop java_class);
337
338 static oop name(Handle java_class, TRAPS);
339
340 static oop source_file(oop java_class);
341 static void set_source_file(oop java_class, oop source_file);
342
343 static int oop_size(oop java_class);
344 static int oop_size_raw(oop java_class);
345 static void set_oop_size(HeapWord* java_class, int size);
346 static int static_oop_field_count(oop java_class);
347 static int static_oop_field_count_raw(oop java_class);
348 static void set_static_oop_field_count(oop java_class, int size);
349
350 static GrowableArray<Klass*>* fixup_mirror_list() {
351 return _fixup_mirror_list;
352 }
353 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
354 _fixup_mirror_list = v;
355 }
356
357 static GrowableArray<Klass*>* fixup_module_field_list() {
358 return _fixup_module_field_list;
359 }
360 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
361 _fixup_module_field_list = v;
362 }
363
364 // Debugging
365 friend class JavaClasses;
366 friend class InstanceKlass; // verification code accesses offsets
367 friend class ClassFileParser; // access to number_of_fake_fields
368 };
369
370 // Interface to java.lang.Thread objects
371
372 class java_lang_Thread : AllStatic {
373 private:
374 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
375 // so we compute the offsets at startup rather than hard-wiring them.
376 static int _name_offset;
377 static int _group_offset;
378 static int _contextClassLoader_offset;
379 static int _inheritedAccessControlContext_offset;
380 static int _priority_offset;
381 static int _eetop_offset;
382 static int _daemon_offset;
383 static int _stillborn_offset;
384 static int _stackSize_offset;
385 static int _tid_offset;
386 static int _thread_status_offset;
387 static int _park_blocker_offset;
388
389 static void compute_offsets();
390
391 public:
392 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
393
394 // Instance creation
395 static oop create();
396 // Returns the JavaThread associated with the thread obj
397 static JavaThread* thread(oop java_thread);
398 // Set JavaThread for instance
399 static void set_thread(oop java_thread, JavaThread* thread);
400 // Name
401 static oop name(oop java_thread);
402 static void set_name(oop java_thread, oop name);
403 // Priority
404 static ThreadPriority priority(oop java_thread);
405 static void set_priority(oop java_thread, ThreadPriority priority);
406 // Thread group
407 static oop threadGroup(oop java_thread);
408 // Stillborn
409 static bool is_stillborn(oop java_thread);
410 static void set_stillborn(oop java_thread);
411 // Alive (NOTE: this is not really a field, but provides the correct
412 // definition without doing a Java call)
413 static bool is_alive(oop java_thread);
414 // Daemon
415 static bool is_daemon(oop java_thread);
416 static void set_daemon(oop java_thread);
417 // Context ClassLoader
418 static oop context_class_loader(oop java_thread);
419 // Control context
420 static oop inherited_access_control_context(oop java_thread);
421 // Stack size hint
422 static jlong stackSize(oop java_thread);
423 // Thread ID
424 static jlong thread_id(oop java_thread);
425
426 // Blocker object responsible for thread parking
427 static oop park_blocker(oop java_thread);
428
429 // Java Thread Status for JVMTI and M&M use.
430 // This thread status info is saved in threadStatus field of
431 // java.lang.Thread java class.
432 enum ThreadStatus {
433 NEW = 0,
434 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
435 JVMTI_THREAD_STATE_RUNNABLE,
436 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
437 JVMTI_THREAD_STATE_WAITING +
438 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
439 JVMTI_THREAD_STATE_SLEEPING,
440 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
441 JVMTI_THREAD_STATE_WAITING +
442 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
443 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
444 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
445 JVMTI_THREAD_STATE_WAITING +
446 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
447 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
448 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
449 JVMTI_THREAD_STATE_WAITING +
450 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
451 JVMTI_THREAD_STATE_PARKED,
452 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
453 JVMTI_THREAD_STATE_WAITING +
454 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
455 JVMTI_THREAD_STATE_PARKED,
456 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
457 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
458 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
459 };
460 // Write thread status info to threadStatus field of java.lang.Thread.
461 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
462 // Read thread status info from threadStatus field of java.lang.Thread.
463 static ThreadStatus get_thread_status(oop java_thread_oop);
464
465 static const char* thread_status_name(oop java_thread_oop);
466
467 // Debugging
468 friend class JavaClasses;
469 };
470
471 // Interface to java.lang.ThreadGroup objects
472
473 class java_lang_ThreadGroup : AllStatic {
474 private:
475 static int _parent_offset;
476 static int _name_offset;
477 static int _threads_offset;
478 static int _groups_offset;
479 static int _maxPriority_offset;
480 static int _destroyed_offset;
481 static int _daemon_offset;
482 static int _nthreads_offset;
483 static int _ngroups_offset;
484
485 static void compute_offsets();
486
487 public:
488 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
489
490 // parent ThreadGroup
491 static oop parent(oop java_thread_group);
492 // name
493 static const char* name(oop java_thread_group);
494 // ("name as oop" accessor is not necessary)
495 // Number of threads in group
496 static int nthreads(oop java_thread_group);
497 // threads
498 static objArrayOop threads(oop java_thread_group);
499 // Number of threads in group
500 static int ngroups(oop java_thread_group);
501 // groups
502 static objArrayOop groups(oop java_thread_group);
503 // maxPriority in group
504 static ThreadPriority maxPriority(oop java_thread_group);
505 // Destroyed
506 static bool is_destroyed(oop java_thread_group);
507 // Daemon
508 static bool is_daemon(oop java_thread_group);
509 // Debugging
510 friend class JavaClasses;
511 };
512
513
514
515 // Interface to java.lang.Throwable objects
516
517 class java_lang_Throwable: AllStatic {
518 friend class BacktraceBuilder;
519 friend class BacktraceIterator;
520
521 private:
522 // Offsets
523 enum {
524 hc_backtrace_offset = 0,
525 hc_detailMessage_offset = 1,
526 hc_cause_offset = 2, // New since 1.4
527 hc_stackTrace_offset = 3 // New since 1.4
528 };
529 // Trace constants
530 enum {
531 trace_methods_offset = 0,
532 trace_bcis_offset = 1,
533 trace_mirrors_offset = 2,
534 trace_names_offset = 3,
535 trace_next_offset = 4,
536 trace_size = 5,
537 trace_chunk_size = 32
538 };
539
540 static int backtrace_offset;
541 static int detailMessage_offset;
542 static int stackTrace_offset;
543 static int depth_offset;
544 static int static_unassigned_stacktrace_offset;
545
546 // StackTrace (programmatic access, new since 1.4)
547 static void clear_stacktrace(oop throwable);
548 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
549 static void set_stacktrace(oop throwable, oop st_element_array);
550 static oop unassigned_stacktrace();
551
552 public:
553 // Backtrace
554 static oop backtrace(oop throwable);
555 static void set_backtrace(oop throwable, oop value);
556 static int depth(oop throwable);
557 static void set_depth(oop throwable, int value);
558 // Needed by JVMTI to filter out this internal field.
559 static int get_backtrace_offset() { return backtrace_offset;}
560 static int get_detailMessage_offset() { return detailMessage_offset;}
561 // Message
562 static oop message(oop throwable);
563 static void set_message(oop throwable, oop value);
564 static Symbol* detail_message(oop throwable);
565 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
566 static void print_stack_usage(Handle stream);
567
568 static void compute_offsets();
569 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
570
571 // Allocate space for backtrace (created but stack trace not filled in)
572 static void allocate_backtrace(Handle throwable, TRAPS);
573 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
574 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
575 // Fill in current stack trace, can cause GC
576 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
577 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
578 // Programmatic access to stack trace
579 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
580 // Printing
581 static void print(oop throwable, outputStream* st);
582 static void print_stack_trace(Handle throwable, outputStream* st);
583 static void java_printStackTrace(Handle throwable, TRAPS);
584 // Debugging
585 friend class JavaClasses;
586 };
587
588
589 // Interface to java.lang.reflect.AccessibleObject objects
590
591 class java_lang_reflect_AccessibleObject: AllStatic {
592 private:
593 // Note that to reduce dependencies on the JDK we compute these
594 // offsets at run-time.
595 static int override_offset;
596
597 static void compute_offsets();
598
599 public:
600 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
601
602 // Accessors
603 static jboolean override(oop reflect);
604 static void set_override(oop reflect, jboolean value);
605
606 // Debugging
607 friend class JavaClasses;
608 };
609
610
611 // Interface to java.lang.reflect.Method objects
612
613 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
614 private:
615 // Note that to reduce dependencies on the JDK we compute these
616 // offsets at run-time.
617 static int clazz_offset;
618 static int name_offset;
619 static int returnType_offset;
620 static int parameterTypes_offset;
621 static int exceptionTypes_offset;
622 static int slot_offset;
623 static int modifiers_offset;
624 static int signature_offset;
625 static int annotations_offset;
626 static int parameter_annotations_offset;
627 static int annotation_default_offset;
628
629 static void compute_offsets();
630 public:
631 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
632
633 // Allocation
634 static Handle create(TRAPS);
635
636 // Accessors
637 static oop clazz(oop reflect);
638 static void set_clazz(oop reflect, oop value);
639
640 static void set_name(oop method, oop value);
641
642 static oop return_type(oop method);
643 static void set_return_type(oop method, oop value);
644
645 static oop parameter_types(oop method);
646 static void set_parameter_types(oop method, oop value);
647
648 static int slot(oop reflect);
649 static void set_slot(oop reflect, int value);
650
651 static void set_exception_types(oop method, oop value);
652 static void set_modifiers(oop method, int value);
653 static void set_signature(oop method, oop value);
654 static void set_annotations(oop method, oop value);
655 static void set_parameter_annotations(oop method, oop value);
656 static void set_annotation_default(oop method, oop value);
657
658 // Debugging
659 friend class JavaClasses;
660 };
661
662
663 // Interface to java.lang.reflect.Constructor objects
664
665 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
666 private:
667 // Note that to reduce dependencies on the JDK we compute these
668 // offsets at run-time.
669 static int clazz_offset;
670 static int parameterTypes_offset;
671 static int exceptionTypes_offset;
672 static int slot_offset;
673 static int modifiers_offset;
674 static int signature_offset;
675 static int annotations_offset;
676 static int parameter_annotations_offset;
677
678 static void compute_offsets();
679 public:
680 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
681
682 // Allocation
683 static Handle create(TRAPS);
684
685 // Accessors
686 static oop clazz(oop reflect);
687 static void set_clazz(oop reflect, oop value);
688
689 static oop parameter_types(oop constructor);
690 static void set_parameter_types(oop constructor, oop value);
691
692 static int slot(oop reflect);
693 static void set_slot(oop reflect, int value);
694
695 static void set_exception_types(oop constructor, oop value);
696 static void set_modifiers(oop constructor, int value);
697 static void set_signature(oop constructor, oop value);
698 static void set_annotations(oop constructor, oop value);
699 static void set_parameter_annotations(oop method, oop value);
700
701 // Debugging
702 friend class JavaClasses;
703 };
704
705
706 // Interface to java.lang.reflect.Field objects
707
708 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
709 private:
710 // Note that to reduce dependencies on the JDK we compute these
711 // offsets at run-time.
712 static int clazz_offset;
713 static int name_offset;
714 static int type_offset;
715 static int slot_offset;
716 static int modifiers_offset;
717 static int signature_offset;
718 static int annotations_offset;
719
720 static void compute_offsets();
721
722 public:
723 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
724
725 // Allocation
726 static Handle create(TRAPS);
727
728 // Accessors
729 static oop clazz(oop reflect);
730 static void set_clazz(oop reflect, oop value);
731
732 static oop name(oop field);
733 static void set_name(oop field, oop value);
734
735 static oop type(oop field);
736 static void set_type(oop field, oop value);
737
738 static int slot(oop reflect);
739 static void set_slot(oop reflect, int value);
740
741 static int modifiers(oop field);
742 static void set_modifiers(oop field, int value);
743
744 static void set_signature(oop constructor, oop value);
745 static void set_annotations(oop constructor, oop value);
746 static void set_parameter_annotations(oop method, oop value);
747 static void set_annotation_default(oop method, oop value);
748
749 // Debugging
750 friend class JavaClasses;
751 };
752
753 class java_lang_reflect_Parameter {
754 private:
755 // Note that to reduce dependencies on the JDK we compute these
756 // offsets at run-time.
757 static int name_offset;
758 static int modifiers_offset;
759 static int index_offset;
760 static int executable_offset;
761
762 static void compute_offsets();
763
764 public:
765 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
766
767 // Allocation
768 static Handle create(TRAPS);
769
770 // Accessors
771 static oop name(oop field);
772 static void set_name(oop field, oop value);
773
774 static int index(oop reflect);
775 static void set_index(oop reflect, int value);
776
777 static int modifiers(oop reflect);
778 static void set_modifiers(oop reflect, int value);
779
780 static oop executable(oop constructor);
781 static void set_executable(oop constructor, oop value);
782
783 friend class JavaClasses;
784 };
785
786 #define MODULE_INJECTED_FIELDS(macro) \
787 macro(java_lang_Module, module_entry, intptr_signature, false)
788
789 class java_lang_Module {
790 private:
791 static int loader_offset;
792 static int name_offset;
793 static int _module_entry_offset;
794 static void compute_offsets();
795
796 public:
797 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
798
799 // Allocation
800 static Handle create(Handle loader, Handle module_name, TRAPS);
801
802 // Testers
803 static bool is_instance(oop obj);
804
805 // Accessors
806 static oop loader(oop module);
807 static void set_loader(oop module, oop value);
808
809 static oop name(oop module);
810 static void set_name(oop module, oop value);
811
812 static ModuleEntry* module_entry(oop module);
813 static void set_module_entry(oop module, ModuleEntry* module_entry);
814
815 friend class JavaClasses;
816 };
817
818 // Interface to jdk.internal.reflect.ConstantPool objects
819 class reflect_ConstantPool {
820 private:
821 // Note that to reduce dependencies on the JDK we compute these
822 // offsets at run-time.
823 static int _oop_offset;
824
825 static void compute_offsets();
826
827 public:
828 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
829
830 // Allocation
831 static Handle create(TRAPS);
832
833 // Accessors
834 static void set_cp(oop reflect, ConstantPool* value);
835 static int oop_offset() {
836 return _oop_offset;
837 }
838
839 static ConstantPool* get_cp(oop reflect);
840
841 // Debugging
842 friend class JavaClasses;
843 };
844
845 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
846 class reflect_UnsafeStaticFieldAccessorImpl {
847 private:
848 static int _base_offset;
849 static void compute_offsets();
850
851 public:
852 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
853
854 static int base_offset() {
855 return _base_offset;
856 }
857
858 // Debugging
859 friend class JavaClasses;
860 };
861
862 // Interface to java.lang primitive type boxing objects:
863 // - java.lang.Boolean
864 // - java.lang.Character
865 // - java.lang.Float
866 // - java.lang.Double
867 // - java.lang.Byte
868 // - java.lang.Short
869 // - java.lang.Integer
870 // - java.lang.Long
871
872 // This could be separated out into 8 individual classes.
873
874 class java_lang_boxing_object: AllStatic {
875 private:
876 enum {
877 hc_value_offset = 0
878 };
879 static int value_offset;
880 static int long_value_offset;
881
882 static oop initialize_and_allocate(BasicType type, TRAPS);
883 public:
884 // Allocation. Returns a boxed value, or NULL for invalid type.
885 static oop create(BasicType type, jvalue* value, TRAPS);
886 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
887 static BasicType get_value(oop box, jvalue* value);
888 static BasicType set_value(oop box, jvalue* value);
889 static BasicType basic_type(oop box);
890 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
891 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
892 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
893 static void print(BasicType type, jvalue* value, outputStream* st);
894
895 static int value_offset_in_bytes(BasicType type) {
896 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
897 value_offset;
898 }
899
900 // Debugging
901 friend class JavaClasses;
902 };
903
904
905
906 // Interface to java.lang.ref.Reference objects
907
908 class java_lang_ref_Reference: AllStatic {
909 public:
910 enum {
911 hc_referent_offset = 0,
912 hc_queue_offset = 1,
913 hc_next_offset = 2,
914 hc_discovered_offset = 3 // Is not last, see SoftRefs.
915 };
916
917 static int referent_offset;
918 static int queue_offset;
919 static int next_offset;
920 static int discovered_offset;
921
922 // Accessors
923 static inline oop referent(oop ref);
924 static inline void set_referent(oop ref, oop value);
925 static inline void set_referent_raw(oop ref, oop value);
926 static inline HeapWord* referent_addr_raw(oop ref);
927 static inline oop next(oop ref);
928 static inline void set_next(oop ref, oop value);
929 static inline void set_next_raw(oop ref, oop value);
930 static inline HeapWord* next_addr_raw(oop ref);
931 static inline oop discovered(oop ref);
932 static inline void set_discovered(oop ref, oop value);
933 static inline void set_discovered_raw(oop ref, oop value);
934 static inline HeapWord* discovered_addr_raw(oop ref);
935 static inline oop queue(oop ref);
936 static inline void set_queue(oop ref, oop value);
937 static bool is_referent_field(oop obj, ptrdiff_t offset);
938 static inline bool is_final(oop ref);
939 static inline bool is_phantom(oop ref);
940 };
941
942
943 // Interface to java.lang.ref.SoftReference objects
944
945 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
946 public:
947 static int timestamp_offset;
948 static int static_clock_offset;
949
950 // Accessors
951 static jlong timestamp(oop ref);
952
953 // Accessors for statics
954 static jlong clock();
955 static void set_clock(jlong value);
956
957 static void compute_offsets();
958 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
959 };
960
961 // Interface to java.lang.invoke.MethodHandle objects
962
963 class MethodHandleEntry;
964
965 class java_lang_invoke_MethodHandle: AllStatic {
966 friend class JavaClasses;
967
968 private:
969 static int _type_offset; // the MethodType of this MH
970 static int _form_offset; // the LambdaForm of this MH
971
972 static void compute_offsets();
973
974 public:
975 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
976
977 // Accessors
978 static oop type(oop mh);
979 static void set_type(oop mh, oop mtype);
980
981 static oop form(oop mh);
982 static void set_form(oop mh, oop lform);
983
984 // Testers
985 static bool is_subclass(Klass* klass) {
986 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
987 }
988 static bool is_instance(oop obj);
989
990 // Accessors for code generation:
991 static int type_offset_in_bytes() { return _type_offset; }
992 static int form_offset_in_bytes() { return _form_offset; }
993 };
994
995 // Interface to java.lang.invoke.DirectMethodHandle objects
996
997 class java_lang_invoke_DirectMethodHandle: AllStatic {
998 friend class JavaClasses;
999
1000 private:
1001 static int _member_offset; // the MemberName of this DMH
1002
1003 static void compute_offsets();
1004
1005 public:
1006 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1007
1008 // Accessors
1009 static oop member(oop mh);
1010
1011 // Testers
1012 static bool is_subclass(Klass* klass) {
1013 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1014 }
1015 static bool is_instance(oop obj);
1016
1017 // Accessors for code generation:
1018 static int member_offset_in_bytes() { return _member_offset; }
1019 };
1020
1021 // Interface to java.lang.invoke.LambdaForm objects
1022 // (These are a private interface for managing adapter code generation.)
1023
1024 class java_lang_invoke_LambdaForm: AllStatic {
1025 friend class JavaClasses;
1026
1027 private:
1028 static int _vmentry_offset; // type is MemberName
1029
1030 static void compute_offsets();
1031
1032 public:
1033 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1034
1035 // Accessors
1036 static oop vmentry(oop lform);
1037 static void set_vmentry(oop lform, oop invoker);
1038
1039 // Testers
1040 static bool is_subclass(Klass* klass) {
1041 return SystemDictionary::LambdaForm_klass() != NULL &&
1042 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1043 }
1044 static bool is_instance(oop obj);
1045
1046 // Accessors for code generation:
1047 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1048 };
1049
1050
1051 // Interface to java.lang.invoke.MemberName objects
1052 // (These are a private interface for Java code to query the class hierarchy.)
1053
1054 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1055 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1056 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1057
1058 class java_lang_invoke_ResolvedMethodName : AllStatic {
1059 friend class JavaClasses;
1060
1061 static int _vmtarget_offset;
1062 static int _vmholder_offset;
1063
1064 static void compute_offsets();
1065 public:
1066 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1067
1068 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1069
1070 static Method* vmtarget(oop resolved_method);
1071 static void set_vmtarget(oop resolved_method, Method* method);
1072
1073 static void set_vmholder(oop resolved_method, oop holder);
1074
1075 // find or create resolved member name
1076 static oop find_resolved_method(const methodHandle& m, TRAPS);
1077
1078 static bool is_instance(oop resolved_method);
1079 };
1080
1081
1082 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1083 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1084
1085
1086 class java_lang_invoke_MemberName: AllStatic {
1087 friend class JavaClasses;
1088
1089 private:
1090 // From java.lang.invoke.MemberName:
1091 // private Class<?> clazz; // class in which the method is defined
1092 // private String name; // may be null if not yet materialized
1093 // private Object type; // may be null if not yet materialized
1094 // private int flags; // modifier bits; see reflect.Modifier
1095 // private ResolvedMethodName method; // holds VM-specific target value
1096 // private intptr_t vmindex; // member index within class or interface
1097 static int _clazz_offset;
1098 static int _name_offset;
1099 static int _type_offset;
1100 static int _flags_offset;
1101 static int _method_offset;
1102 static int _vmindex_offset;
1103
1104 static void compute_offsets();
1105
1106 public:
1107 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1108 // Accessors
1109 static oop clazz(oop mname);
1110 static void set_clazz(oop mname, oop clazz);
1111
1112 static oop type(oop mname);
1113 static void set_type(oop mname, oop type);
1114
1115 static oop name(oop mname);
1116 static void set_name(oop mname, oop name);
1117
1118 static int flags(oop mname);
1119 static void set_flags(oop mname, int flags);
1120
1121 // Link through ResolvedMethodName field to get Method*
1122 static Method* vmtarget(oop mname);
1123 static void set_method(oop mname, oop method);
1124
1125 static intptr_t vmindex(oop mname);
1126 static void set_vmindex(oop mname, intptr_t index);
1127
1128 // Testers
1129 static bool is_subclass(Klass* klass) {
1130 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1131 }
1132 static bool is_instance(oop obj);
1133
1134 static bool is_method(oop obj);
1135
1136 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1137 enum {
1138 MN_IS_METHOD = 0x00010000, // method (not object constructor)
1139 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // object constructor
1140 MN_IS_FIELD = 0x00040000, // field
1141 MN_IS_TYPE = 0x00080000, // nested type
1142 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1143 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1144 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1145 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1146 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1147 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1148 };
1149
1150 // Accessors for code generation:
1151 static int clazz_offset_in_bytes() { return _clazz_offset; }
1152 static int type_offset_in_bytes() { return _type_offset; }
1153 static int name_offset_in_bytes() { return _name_offset; }
1154 static int flags_offset_in_bytes() { return _flags_offset; }
1155 static int method_offset_in_bytes() { return _method_offset; }
1156 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1157 };
1158
1159
1160 // Interface to java.lang.invoke.MethodType objects
1161
1162 class java_lang_invoke_MethodType: AllStatic {
1163 friend class JavaClasses;
1164
1165 private:
1166 static int _rtype_offset;
1167 static int _ptypes_offset;
1168
1169 static void compute_offsets();
1170
1171 public:
1172 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1173 // Accessors
1174 static oop rtype(oop mt);
1175 static objArrayOop ptypes(oop mt);
1176
1177 static oop ptype(oop mt, int index);
1178 static int ptype_count(oop mt);
1179
1180 static int ptype_slot_count(oop mt); // extra counts for long/double
1181 static int rtype_slot_count(oop mt); // extra counts for long/double
1182
1183 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1184 static void print_signature(oop mt, outputStream* st);
1185
1186 static bool is_instance(oop obj);
1187
1188 static bool equals(oop mt1, oop mt2);
1189
1190 // Accessors for code generation:
1191 static int rtype_offset_in_bytes() { return _rtype_offset; }
1192 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1193 };
1194
1195
1196 // Interface to java.lang.invoke.CallSite objects
1197
1198 class java_lang_invoke_CallSite: AllStatic {
1199 friend class JavaClasses;
1200
1201 private:
1202 static int _target_offset;
1203 static int _context_offset;
1204
1205 static void compute_offsets();
1206
1207 public:
1208 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1209 // Accessors
1210 static oop target( oop site);
1211 static void set_target( oop site, oop target);
1212 static void set_target_volatile( oop site, oop target);
1213
1214 static oop context_no_keepalive(oop site);
1215
1216 // Testers
1217 static bool is_subclass(Klass* klass) {
1218 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1219 }
1220 static bool is_instance(oop obj);
1221
1222 // Accessors for code generation:
1223 static int target_offset_in_bytes() { return _target_offset; }
1224 };
1225
1226 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1227
1228 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1229 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1230 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1231
1232 class DependencyContext;
1233
1234 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1235 friend class JavaClasses;
1236
1237 private:
1238 static int _vmdependencies_offset;
1239 static int _last_cleanup_offset;
1240
1241 static void compute_offsets();
1242
1243 public:
1244 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1245 // Accessors
1246 static DependencyContext vmdependencies(oop context);
1247
1248 // Testers
1249 static bool is_subclass(Klass* klass) {
1250 return klass->is_subclass_of(SystemDictionary::Context_klass());
1251 }
1252 static bool is_instance(oop obj);
1253 };
1254
1255 // Interface to java.security.AccessControlContext objects
1256
1257 class java_security_AccessControlContext: AllStatic {
1258 private:
1259 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1260 // so we compute the offsets at startup rather than hard-wiring them.
1261 static int _context_offset;
1262 static int _privilegedContext_offset;
1263 static int _isPrivileged_offset;
1264 static int _isAuthorized_offset;
1265
1266 static void compute_offsets();
1267 public:
1268 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1269 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1270
1271 // Debugging/initialization
1272 friend class JavaClasses;
1273 };
1274
1275
1276 // Interface to java.lang.ClassLoader objects
1277
1278 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1279 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1280
1281 class java_lang_ClassLoader : AllStatic {
1282 private:
1283 static int _loader_data_offset;
1284 static bool offsets_computed;
1285 static int parent_offset;
1286 static int parallelCapable_offset;
1287 static int name_offset;
1288 static int nameAndId_offset;
1289 static int unnamedModule_offset;
1290
1291 public:
1292 static void compute_offsets();
1293 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1294
1295 static ClassLoaderData* loader_data_acquire(oop loader);
1296 static ClassLoaderData* loader_data_raw(oop loader);
1297 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1298
1299 static oop parent(oop loader);
1300 static oop name(oop loader);
1301 static oop nameAndId(oop loader);
1302 static bool isAncestor(oop loader, oop cl);
1303
1304 // Support for parallelCapable field
1305 static bool parallelCapable(oop the_class_mirror);
1306
1307 static bool is_trusted_loader(oop loader);
1308
1309 // Return true if this is one of the class loaders associated with
1310 // the generated bytecodes for reflection.
1311 static bool is_reflection_class_loader(oop loader);
1312
1313 // Fix for 4474172
1314 static oop non_reflection_class_loader(oop loader);
1315
1316 // Testers
1317 static bool is_subclass(Klass* klass) {
1318 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1319 }
1320 static bool is_instance(oop obj);
1321
1322 static oop unnamedModule(oop loader);
1323
1324 // Debugging
1325 friend class JavaClasses;
1326 friend class ClassFileParser; // access to number_of_fake_fields
1327 };
1328
1329
1330 // Interface to java.lang.System objects
1331
1332 class java_lang_System : AllStatic {
1333 private:
1334 static int static_in_offset;
1335 static int static_out_offset;
1336 static int static_err_offset;
1337 static int static_security_offset;
1338
1339 public:
1340 static int in_offset_in_bytes();
1341 static int out_offset_in_bytes();
1342 static int err_offset_in_bytes();
1343
1344 static void compute_offsets();
1345 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1346
1347 // Debugging
1348 friend class JavaClasses;
1349 };
1350
1351
1352 // Interface to java.lang.StackTraceElement objects
1353
1354 class java_lang_StackTraceElement: AllStatic {
1355 private:
1356 static int declaringClassObject_offset;
1357 static int classLoaderName_offset;
1358 static int moduleName_offset;
1359 static int moduleVersion_offset;
1360 static int declaringClass_offset;
1361 static int methodName_offset;
1362 static int fileName_offset;
1363 static int lineNumber_offset;
1364
1365 // Setters
1366 static void set_classLoaderName(oop element, oop value);
1367 static void set_moduleName(oop element, oop value);
1368 static void set_moduleVersion(oop element, oop value);
1369 static void set_declaringClass(oop element, oop value);
1370 static void set_methodName(oop element, oop value);
1371 static void set_fileName(oop element, oop value);
1372 static void set_lineNumber(oop element, int value);
1373 static void set_declaringClassObject(oop element, oop value);
1374
1375 public:
1376 // Create an instance of StackTraceElement
1377 static oop create(const methodHandle& method, int bci, TRAPS);
1378
1379 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1380 int version, int bci, Symbol* name, TRAPS);
1381
1382 static void compute_offsets();
1383 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1384
1385 #if INCLUDE_JVMCI
1386 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1387 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1388 #endif
1389
1390 // Debugging
1391 friend class JavaClasses;
1392 };
1393
1394
1395 class Backtrace: AllStatic {
1396 public:
1397 // Helper backtrace functions to store bci|version together.
1398 static int merge_bci_and_version(int bci, int version);
1399 static int merge_mid_and_cpref(int mid, int cpref);
1400 static int bci_at(unsigned int merged);
1401 static int version_at(unsigned int merged);
1402 static int mid_at(unsigned int merged);
1403 static int cpref_at(unsigned int merged);
1404 static int get_line_number(const methodHandle& method, int bci);
1405 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1406
1407 // Debugging
1408 friend class JavaClasses;
1409 };
1410
1411 // Interface to java.lang.StackFrameInfo objects
1412
1413 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1414 macro(java_lang_StackFrameInfo, version, short_signature, false)
1415
1416 class java_lang_StackFrameInfo: AllStatic {
1417 private:
1418 static int _memberName_offset;
1419 static int _bci_offset;
1420 static int _version_offset;
1421
1422 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1423
1424 public:
1425 // Setters
1426 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1427 static void set_bci(oop info, int value);
1428
1429 static void set_version(oop info, short value);
1430
1431 static void compute_offsets();
1432 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1433
1434 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1435
1436 // Debugging
1437 friend class JavaClasses;
1438 };
1439
1440 class java_lang_LiveStackFrameInfo: AllStatic {
1441 private:
1442 static int _monitors_offset;
1443 static int _locals_offset;
1444 static int _operands_offset;
1445 static int _mode_offset;
1446
1447 public:
1448 static void set_monitors(oop info, oop value);
1449 static void set_locals(oop info, oop value);
1450 static void set_operands(oop info, oop value);
1451 static void set_mode(oop info, int value);
1452
1453 static void compute_offsets();
1454 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1455
1456 // Debugging
1457 friend class JavaClasses;
1458 };
1459
1460 // Interface to java.lang.AssertionStatusDirectives objects
1461
1462 class java_lang_AssertionStatusDirectives: AllStatic {
1463 private:
1464 static int classes_offset;
1465 static int classEnabled_offset;
1466 static int packages_offset;
1467 static int packageEnabled_offset;
1468 static int deflt_offset;
1469
1470 public:
1471 // Setters
1472 static void set_classes(oop obj, oop val);
1473 static void set_classEnabled(oop obj, oop val);
1474 static void set_packages(oop obj, oop val);
1475 static void set_packageEnabled(oop obj, oop val);
1476 static void set_deflt(oop obj, bool val);
1477
1478 static void compute_offsets();
1479 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1480
1481 // Debugging
1482 friend class JavaClasses;
1483 };
1484
1485
1486 class java_nio_Buffer: AllStatic {
1487 private:
1488 static int _limit_offset;
1489
1490 public:
1491 static int limit_offset();
1492 static void compute_offsets();
1493 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1494 };
1495
1496 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1497 private:
1498 static int _owner_offset;
1499 public:
1500 static void compute_offsets();
1501 static oop get_owner_threadObj(oop obj);
1502 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1503 };
1504
1505 // Interface to jdk.internal.misc.UnsafeConsants
1506
1507 class jdk_internal_misc_UnsafeConstants : AllStatic {
1508 public:
1509 static void set_unsafe_constants();
1510 static void compute_offsets() { }
1511 static void serialize_offsets(SerializeClosure* f) { }
1512 };
1513
1514 class java_lang_Integer : AllStatic {
1515 public:
1516 static jint value(oop obj);
1517 };
1518
1519 class java_lang_Long : AllStatic {
1520 public:
1521 static jlong value(oop obj);
1522 };
1523
1524 class java_lang_Character : AllStatic {
1525 public:
1526 static jchar value(oop obj);
1527 };
1528
1529 class java_lang_Short : AllStatic {
1530 public:
1531 static jshort value(oop obj);
1532 };
1533
1534 class java_lang_Byte : AllStatic {
1535 public:
1536 static jbyte value(oop obj);
1537 };
1538
1539 class java_lang_Boolean : AllStatic {
1540 private:
1541 static int _static_TRUE_offset;
1542 static int _static_FALSE_offset;
1543 public:
1544 static Symbol* symbol();
1545 static void compute_offsets(InstanceKlass* k);
1546 static oop get_TRUE(InstanceKlass *k);
1547 static oop get_FALSE(InstanceKlass *k);
1548 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1549 static jboolean value(oop obj);
1550 };
1551
1552 class java_lang_Integer_IntegerCache : AllStatic {
1553 private:
1554 static int _static_cache_offset;
1555 public:
1556 static Symbol* symbol();
1557 static void compute_offsets(InstanceKlass* k);
1558 static objArrayOop cache(InstanceKlass *k);
1559 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1560 };
1561
1562 class java_lang_Long_LongCache : AllStatic {
1563 private:
1564 static int _static_cache_offset;
1565 public:
1566 static Symbol* symbol();
1567 static void compute_offsets(InstanceKlass* k);
1568 static objArrayOop cache(InstanceKlass *k);
1569 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1570 };
1571
1572 class java_lang_Character_CharacterCache : AllStatic {
1573 private:
1574 static int _static_cache_offset;
1575 public:
1576 static Symbol* symbol();
1577 static void compute_offsets(InstanceKlass* k);
1578 static objArrayOop cache(InstanceKlass *k);
1579 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1580 };
1581
1582 class java_lang_Short_ShortCache : AllStatic {
1583 private:
1584 static int _static_cache_offset;
1585 public:
1586 static Symbol* symbol();
1587 static void compute_offsets(InstanceKlass* k);
1588 static objArrayOop cache(InstanceKlass *k);
1589 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1590 };
1591
1592 class java_lang_Byte_ByteCache : AllStatic {
1593 private:
1594 static int _static_cache_offset;
1595 public:
1596 static Symbol* symbol();
1597 static void compute_offsets(InstanceKlass* k);
1598 static objArrayOop cache(InstanceKlass *k);
1599 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1600 };
1601
1602 // Use to declare fields that need to be injected into Java classes
1603 // for the JVM to use. The name_index and signature_index are
1604 // declared in vmSymbols. The may_be_java flag is used to declare
1605 // fields that might already exist in Java but should be injected if
1606 // they don't. Otherwise the field is unconditionally injected and
1607 // the JVM uses the injected one. This is to ensure that name
1608 // collisions don't occur. In general may_be_java should be false
1609 // unless there's a good reason.
1610
1611 class InjectedField {
1612 public:
1613 const SystemDictionary::WKID klass_id;
1614 const vmSymbols::SID name_index;
1615 const vmSymbols::SID signature_index;
1616 const bool may_be_java;
1617
1618
1619 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1620 Symbol* name() const { return lookup_symbol(name_index); }
1621 Symbol* signature() const { return lookup_symbol(signature_index); }
1622
1623 int compute_offset();
1624
1625 // Find the Symbol for this index
1626 static Symbol* lookup_symbol(int symbol_index) {
1627 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1628 }
1629 };
1630
1631 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1632 klass##_##name##_enum,
1633
1634 #define ALL_INJECTED_FIELDS(macro) \
1635 CLASS_INJECTED_FIELDS(macro) \
1636 CLASSLOADER_INJECTED_FIELDS(macro) \
1637 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1638 MEMBERNAME_INJECTED_FIELDS(macro) \
1639 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1640 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1641 MODULE_INJECTED_FIELDS(macro)
1642
1643 // Interface to hard-coded offset checking
1644
1645 class JavaClasses : AllStatic {
1646 private:
1647
1648 static InjectedField _injected_fields[];
1649
1650 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1651 public:
1652 enum InjectedFieldID {
1653 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1654 MAX_enum
1655 };
1656
1657 static int compute_injected_offset(InjectedFieldID id);
1658
1659 static void compute_hard_coded_offsets();
1660 static void compute_offsets();
1661 static void check_offsets() PRODUCT_RETURN;
1662 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1663 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1664 };
1665
1666 #undef DECLARE_INJECTED_FIELD_ENUM
1667
1668 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP