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