1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(jdk_internal_misc_UnsafeConstants) \
61 f(java_lang_ThreadGroup) \
62 f(java_lang_AssertionStatusDirectives) \
63 f(java_lang_ref_SoftReference) \
64 f(java_lang_invoke_MethodHandle) \
65 f(java_lang_invoke_DirectMethodHandle) \
66 f(java_lang_invoke_MemberName) \
67 f(java_lang_invoke_ResolvedMethodName) \
68 f(java_lang_invoke_LambdaForm) \
69 f(java_lang_invoke_MethodType) \
70 f(java_lang_invoke_CallSite) \
71 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
72 f(java_security_AccessControlContext) \
73 f(java_lang_reflect_AccessibleObject) \
74 f(java_lang_reflect_Method) \
75 f(java_lang_reflect_Constructor) \
76 f(java_lang_reflect_Field) \
77 f(java_nio_Buffer) \
78 f(reflect_ConstantPool) \
79 f(reflect_UnsafeStaticFieldAccessorImpl) \
80 f(java_lang_reflect_Parameter) \
81 f(java_lang_Module) \
82 f(java_lang_StackTraceElement) \
83 f(java_lang_StackFrameInfo) \
84 f(java_lang_LiveStackFrameInfo) \
85 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
86 //end
87
88 #define BASIC_JAVA_CLASSES_DO(f) \
89 BASIC_JAVA_CLASSES_DO_PART1(f) \
90 BASIC_JAVA_CLASSES_DO_PART2(f)
91
92 // Interface to java.lang.String objects
93
94 class java_lang_String : AllStatic {
95 private:
96 static int value_offset;
97 static int hash_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 coder_offset_in_bytes() {
137 assert(initialized && (coder_offset > 0), "Must be initialized");
138 return coder_offset;
139 }
140
141 static inline void set_value_raw(oop string, typeArrayOop buffer);
142 static inline void set_value(oop string, typeArrayOop buffer);
143 static inline void set_hash(oop string, unsigned int hash);
144
145 // Accessors
146 static inline typeArrayOop value(oop java_string);
147 static inline typeArrayOop value_no_keepalive(oop java_string);
148 static inline unsigned int hash(oop java_string);
149 static inline bool is_latin1(oop java_string);
150 static inline int length(oop java_string);
151 static inline int length(oop java_string, typeArrayOop string_value);
152 static int utf8_length(oop java_string);
153 static int utf8_length(oop java_string, typeArrayOop string_value);
154
155 // String converters
156 static char* as_utf8_string(oop java_string);
157 static char* as_utf8_string(oop java_string, char* buf, int buflen);
158 static char* as_utf8_string(oop java_string, int start, int len);
159 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
160 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
161 static char* as_platform_dependent_str(Handle java_string, TRAPS);
162 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
163 // produce an ascii string with all other values quoted using \u####
164 static char* as_quoted_ascii(oop java_string);
165
166 // Compute the hash value for a java.lang.String object which would
167 // contain the characters passed in.
168 //
169 // As the hash value used by the String object itself, in
170 // String.hashCode(). This value is normally calculated in Java code
171 // in the String.hashCode method(), but is precomputed for String
172 // objects in the shared archive file.
173 // hash P(31) from Kernighan & Ritchie
174 //
175 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
176 static unsigned int hash_code(const jchar* s, int len) {
177 unsigned int h = 0;
178 while (len-- > 0) {
179 h = 31*h + (unsigned int) *s;
180 s++;
181 }
182 return h;
183 }
184
185 static unsigned int hash_code(const jbyte* s, int len) {
186 unsigned int h = 0;
187 while (len-- > 0) {
188 h = 31*h + (((unsigned int) *s) & 0xFF);
189 s++;
190 }
191 return h;
192 }
193
194 static unsigned int hash_code(oop java_string);
195
196 static bool equals(oop java_string, const jchar* chars, int len);
197 static bool equals(oop str1, oop str2);
198 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
199
200 // Conversion between '.' and '/' formats
201 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
202 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
203
204 // Conversion
205 static Symbol* as_symbol(oop java_string, TRAPS);
206 static Symbol* as_symbol_or_null(oop java_string);
207
208 // Testers
209 static bool is_instance(oop obj);
210 static inline bool is_instance_inlined(oop obj);
211
212 // Debugging
213 static void print(oop java_string, outputStream* st);
214 friend class JavaClasses;
215 friend class StringTable;
216 };
217
218
219 // Interface to java.lang.Class objects
220
221 #define CLASS_INJECTED_FIELDS(macro) \
222 macro(java_lang_Class, klass, intptr_signature, false) \
223 macro(java_lang_Class, array_klass, intptr_signature, false) \
224 macro(java_lang_Class, oop_size, int_signature, false) \
225 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
226 macro(java_lang_Class, protection_domain, object_signature, false) \
227 macro(java_lang_Class, signers, object_signature, false) \
228 macro(java_lang_Class, source_file, object_signature, false) \
229
230 class java_lang_Class : AllStatic {
231 friend class VMStructs;
232 friend class JVMCIVMStructs;
233
234 private:
235 // The fake offsets are added by the class loader when java.lang.Class is loaded
236
237 static int _klass_offset;
238 static int _array_klass_offset;
239
240 static int _oop_size_offset;
241 static int _static_oop_field_count_offset;
242
243 static int _protection_domain_offset;
244 static int _init_lock_offset;
245 static int _signers_offset;
246 static int _class_loader_offset;
247 static int _module_offset;
248 static int _component_mirror_offset;
249 static int _name_offset;
250 static int _source_file_offset;
251
252 static bool offsets_computed;
253 static int classRedefinedCount_offset;
254
255 static GrowableArray<Klass*>* _fixup_mirror_list;
256 static GrowableArray<Klass*>* _fixup_module_field_list;
257
258 static void set_init_lock(oop java_class, oop init_lock);
259 static void set_protection_domain(oop java_class, oop protection_domain);
260 static void set_class_loader(oop java_class, oop class_loader);
261 static void set_component_mirror(oop java_class, oop comp_mirror);
262 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
263 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
264 public:
265 static void allocate_fixup_lists();
266 static void compute_offsets();
267
268 // Instance creation
269 static void create_mirror(Klass* k, Handle class_loader, Handle module,
270 Handle protection_domain, TRAPS);
271 static void fixup_mirror(Klass* k, TRAPS);
272 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
273
274 // Archiving
275 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
276 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
277 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
278 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
279 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
280 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
281 Handle protection_domain,
282 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
283
284 static void fixup_module_field(Klass* k, Handle module);
285
286 // Conversion
287 static Klass* as_Klass(oop java_class);
288 static Klass* as_Klass_raw(oop java_class);
289 static void set_klass(oop java_class, Klass* klass);
290 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
291 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
292 static void print_signature(oop java_class, outputStream *st);
293 static const char* as_external_name(oop java_class);
294 // Testing
295 static bool is_instance(oop obj);
296
297 static bool is_primitive(oop java_class);
298 static BasicType primitive_type(oop java_class);
299 static oop primitive_mirror(BasicType t);
300 // JVM_NewArray support
301 static Klass* array_klass_acquire(oop java_class);
302 static void release_set_array_klass(oop java_class, Klass* klass);
303 // compiler support for class operations
304 static int klass_offset_in_bytes() { return _klass_offset; }
305 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
306 // Support for classRedefinedCount field
307 static int classRedefinedCount(oop the_class_mirror);
308 static void set_classRedefinedCount(oop the_class_mirror, int value);
309
310 // Support for embedded per-class oops
311 static oop protection_domain(oop java_class);
312 static oop init_lock(oop java_class);
313 static oop component_mirror(oop java_class);
314 static objArrayOop signers(oop java_class);
315 static void set_signers(oop java_class, objArrayOop signers);
316
317 static oop class_loader(oop java_class);
318 static void set_module(oop java_class, oop module);
319 static oop module(oop java_class);
320
321 static oop name(Handle java_class, TRAPS);
322
323 static oop source_file(oop java_class);
324 static void set_source_file(oop java_class, oop source_file);
325
326 static int oop_size(oop java_class);
327 static int oop_size_raw(oop java_class);
328 static void set_oop_size(HeapWord* java_class, int size);
329 static int static_oop_field_count(oop java_class);
330 static int static_oop_field_count_raw(oop java_class);
331 static void set_static_oop_field_count(oop java_class, int size);
332
333 static GrowableArray<Klass*>* fixup_mirror_list() {
334 return _fixup_mirror_list;
335 }
336 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
337 _fixup_mirror_list = v;
338 }
339
340 static GrowableArray<Klass*>* fixup_module_field_list() {
341 return _fixup_module_field_list;
342 }
343 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
344 _fixup_module_field_list = v;
345 }
346
347 // Debugging
348 friend class JavaClasses;
349 friend class InstanceKlass; // verification code accesses offsets
350 friend class ClassFileParser; // access to number_of_fake_fields
351 };
352
353 // Interface to java.lang.Thread objects
354
355 class java_lang_Thread : AllStatic {
356 private:
357 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
358 // so we compute the offsets at startup rather than hard-wiring them.
359 static int _name_offset;
360 static int _group_offset;
361 static int _contextClassLoader_offset;
362 static int _inheritedAccessControlContext_offset;
363 static int _priority_offset;
364 static int _eetop_offset;
365 static int _daemon_offset;
366 static int _stillborn_offset;
367 static int _stackSize_offset;
368 static int _tid_offset;
369 static int _thread_status_offset;
370 static int _park_blocker_offset;
371 static int _park_event_offset ;
372
373 static void compute_offsets();
374
375 public:
376 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
377
378 // Instance creation
379 static oop create();
380 // Returns the JavaThread associated with the thread obj
381 static JavaThread* thread(oop java_thread);
382 // Set JavaThread for instance
383 static void set_thread(oop java_thread, JavaThread* thread);
384 // Name
385 static oop name(oop java_thread);
386 static void set_name(oop java_thread, oop name);
387 // Priority
388 static ThreadPriority priority(oop java_thread);
389 static void set_priority(oop java_thread, ThreadPriority priority);
390 // Thread group
391 static oop threadGroup(oop java_thread);
392 // Stillborn
393 static bool is_stillborn(oop java_thread);
394 static void set_stillborn(oop java_thread);
395 // Alive (NOTE: this is not really a field, but provides the correct
396 // definition without doing a Java call)
397 static bool is_alive(oop java_thread);
398 // Daemon
399 static bool is_daemon(oop java_thread);
400 static void set_daemon(oop java_thread);
401 // Context ClassLoader
402 static oop context_class_loader(oop java_thread);
403 // Control context
404 static oop inherited_access_control_context(oop java_thread);
405 // Stack size hint
406 static jlong stackSize(oop java_thread);
407 // Thread ID
408 static jlong thread_id(oop java_thread);
409
410 // Blocker object responsible for thread parking
411 static oop park_blocker(oop java_thread);
412
413 // Pointer to type-stable park handler, encoded as jlong.
414 // Should be set when apparently null
415 // For details, see unsafe.cpp Unsafe_Unpark
416 static jlong park_event(oop java_thread);
417 static bool set_park_event(oop java_thread, jlong ptr);
418
419 // Java Thread Status for JVMTI and M&M use.
420 // This thread status info is saved in threadStatus field of
421 // java.lang.Thread java class.
422 enum ThreadStatus {
423 NEW = 0,
424 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
425 JVMTI_THREAD_STATE_RUNNABLE,
426 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
427 JVMTI_THREAD_STATE_WAITING +
428 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
429 JVMTI_THREAD_STATE_SLEEPING,
430 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
431 JVMTI_THREAD_STATE_WAITING +
432 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
433 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
434 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
435 JVMTI_THREAD_STATE_WAITING +
436 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
437 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
438 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
439 JVMTI_THREAD_STATE_WAITING +
440 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
441 JVMTI_THREAD_STATE_PARKED,
442 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
443 JVMTI_THREAD_STATE_WAITING +
444 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
445 JVMTI_THREAD_STATE_PARKED,
446 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
447 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
448 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
449 };
450 // Write thread status info to threadStatus field of java.lang.Thread.
451 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
452 // Read thread status info from threadStatus field of java.lang.Thread.
453 static ThreadStatus get_thread_status(oop java_thread_oop);
454
455 static const char* thread_status_name(oop java_thread_oop);
456
457 // Debugging
458 friend class JavaClasses;
459 };
460
461 // Interface to jdk.internal.misc.UnsafeConsants
462
463 class jdk_internal_misc_UnsafeConstants : AllStatic {
464 public:
465 static void set_unsafe_constants(jint address_size, jint page_size, jboolean big_endian, jboolean use_unaligned_access);
466 static void compute_offsets() { }
467 static void serialize_offsets(SerializeClosure* f) { }
468 };
469
470 // Interface to java.lang.ThreadGroup objects
471
472 class java_lang_ThreadGroup : AllStatic {
473 private:
474 static int _parent_offset;
475 static int _name_offset;
476 static int _threads_offset;
477 static int _groups_offset;
478 static int _maxPriority_offset;
479 static int _destroyed_offset;
480 static int _daemon_offset;
481 static int _nthreads_offset;
482 static int _ngroups_offset;
483
484 static void compute_offsets();
485
486 public:
487 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
488
489 // parent ThreadGroup
490 static oop parent(oop java_thread_group);
491 // name
492 static const char* name(oop java_thread_group);
493 // ("name as oop" accessor is not necessary)
494 // Number of threads in group
495 static int nthreads(oop java_thread_group);
496 // threads
497 static objArrayOop threads(oop java_thread_group);
498 // Number of threads in group
499 static int ngroups(oop java_thread_group);
500 // groups
501 static objArrayOop groups(oop java_thread_group);
502 // maxPriority in group
503 static ThreadPriority maxPriority(oop java_thread_group);
504 // Destroyed
505 static bool is_destroyed(oop java_thread_group);
506 // Daemon
507 static bool is_daemon(oop java_thread_group);
508 // Debugging
509 friend class JavaClasses;
510 };
511
512
513
514 // Interface to java.lang.Throwable objects
515
516 class java_lang_Throwable: AllStatic {
517 friend class BacktraceBuilder;
518 friend class BacktraceIterator;
519
520 private:
521 // Offsets
522 enum {
523 hc_backtrace_offset = 0,
524 hc_detailMessage_offset = 1,
525 hc_cause_offset = 2, // New since 1.4
526 hc_stackTrace_offset = 3 // New since 1.4
527 };
528 // Trace constants
529 enum {
530 trace_methods_offset = 0,
531 trace_bcis_offset = 1,
532 trace_mirrors_offset = 2,
533 trace_names_offset = 3,
534 trace_next_offset = 4,
535 trace_size = 5,
536 trace_chunk_size = 32
537 };
538
539 static int backtrace_offset;
540 static int detailMessage_offset;
541 static int stackTrace_offset;
542 static int depth_offset;
543 static int static_unassigned_stacktrace_offset;
544
545 // StackTrace (programmatic access, new since 1.4)
546 static void clear_stacktrace(oop throwable);
547 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
548 static void set_stacktrace(oop throwable, oop st_element_array);
549 static oop unassigned_stacktrace();
550
551 public:
552 // Backtrace
553 static oop backtrace(oop throwable);
554 static void set_backtrace(oop throwable, oop value);
555 static int depth(oop throwable);
556 static void set_depth(oop throwable, int value);
557 // Needed by JVMTI to filter out this internal field.
558 static int get_backtrace_offset() { return backtrace_offset;}
559 static int get_detailMessage_offset() { return detailMessage_offset;}
560 // Message
561 static oop message(oop throwable);
562 static void set_message(oop throwable, oop value);
563 static Symbol* detail_message(oop throwable);
564 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
565 static void print_stack_usage(Handle stream);
566
567 static void compute_offsets();
568 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
569
570 // Allocate space for backtrace (created but stack trace not filled in)
571 static void allocate_backtrace(Handle throwable, TRAPS);
572 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
573 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
574 // Fill in current stack trace, can cause GC
575 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
576 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
577 // Programmatic access to stack trace
578 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
579 // Printing
580 static void print(oop throwable, outputStream* st);
581 static void print_stack_trace(Handle throwable, outputStream* st);
582 static void java_printStackTrace(Handle throwable, TRAPS);
583 // Debugging
584 friend class JavaClasses;
585 };
586
587
588 // Interface to java.lang.reflect.AccessibleObject objects
589
590 class java_lang_reflect_AccessibleObject: AllStatic {
591 private:
592 // Note that to reduce dependencies on the JDK we compute these
593 // offsets at run-time.
594 static int override_offset;
595
596 static void compute_offsets();
597
598 public:
599 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
600
601 // Accessors
602 static jboolean override(oop reflect);
603 static void set_override(oop reflect, jboolean value);
604
605 // Debugging
606 friend class JavaClasses;
607 };
608
609
610 // Interface to java.lang.reflect.Method objects
611
612 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
613 private:
614 // Note that to reduce dependencies on the JDK we compute these
615 // offsets at run-time.
616 static int clazz_offset;
617 static int name_offset;
618 static int returnType_offset;
619 static int parameterTypes_offset;
620 static int exceptionTypes_offset;
621 static int slot_offset;
622 static int modifiers_offset;
623 static int signature_offset;
624 static int annotations_offset;
625 static int parameter_annotations_offset;
626 static int annotation_default_offset;
627
628 static void compute_offsets();
629 public:
630 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
631
632 // Allocation
633 static Handle create(TRAPS);
634
635 // Accessors
636 static oop clazz(oop reflect);
637 static void set_clazz(oop reflect, oop value);
638
639 static void set_name(oop method, oop value);
640
641 static oop return_type(oop method);
642 static void set_return_type(oop method, oop value);
643
644 static oop parameter_types(oop method);
645 static void set_parameter_types(oop method, oop value);
646
647 static int slot(oop reflect);
648 static void set_slot(oop reflect, int value);
649
650 static void set_exception_types(oop method, oop value);
651 static void set_modifiers(oop method, int value);
652 static void set_signature(oop method, oop value);
653 static void set_annotations(oop method, oop value);
654 static void set_parameter_annotations(oop method, oop value);
655 static void set_annotation_default(oop method, oop value);
656
657 // Debugging
658 friend class JavaClasses;
659 };
660
661
662 // Interface to java.lang.reflect.Constructor objects
663
664 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
665 private:
666 // Note that to reduce dependencies on the JDK we compute these
667 // offsets at run-time.
668 static int clazz_offset;
669 static int parameterTypes_offset;
670 static int exceptionTypes_offset;
671 static int slot_offset;
672 static int modifiers_offset;
673 static int signature_offset;
674 static int annotations_offset;
675 static int parameter_annotations_offset;
676
677 static void compute_offsets();
678 public:
679 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
680
681 // Allocation
682 static Handle create(TRAPS);
683
684 // Accessors
685 static oop clazz(oop reflect);
686 static void set_clazz(oop reflect, oop value);
687
688 static oop parameter_types(oop constructor);
689 static void set_parameter_types(oop constructor, oop value);
690
691 static int slot(oop reflect);
692 static void set_slot(oop reflect, int value);
693
694 static void set_exception_types(oop constructor, oop value);
695 static void set_modifiers(oop constructor, int value);
696 static void set_signature(oop constructor, oop value);
697 static void set_annotations(oop constructor, oop value);
698 static void set_parameter_annotations(oop method, oop value);
699
700 // Debugging
701 friend class JavaClasses;
702 };
703
704
705 // Interface to java.lang.reflect.Field objects
706
707 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
708 private:
709 // Note that to reduce dependencies on the JDK we compute these
710 // offsets at run-time.
711 static int clazz_offset;
712 static int name_offset;
713 static int type_offset;
714 static int slot_offset;
715 static int modifiers_offset;
716 static int signature_offset;
717 static int annotations_offset;
718
719 static void compute_offsets();
720
721 public:
722 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
723
724 // Allocation
725 static Handle create(TRAPS);
726
727 // Accessors
728 static oop clazz(oop reflect);
729 static void set_clazz(oop reflect, oop value);
730
731 static oop name(oop field);
732 static void set_name(oop field, oop value);
733
734 static oop type(oop field);
735 static void set_type(oop field, oop value);
736
737 static int slot(oop reflect);
738 static void set_slot(oop reflect, int value);
739
740 static int modifiers(oop field);
741 static void set_modifiers(oop field, int value);
742
743 static void set_signature(oop constructor, oop value);
744 static void set_annotations(oop constructor, oop value);
745 static void set_parameter_annotations(oop method, oop value);
746 static void set_annotation_default(oop method, oop value);
747
748 // Debugging
749 friend class JavaClasses;
750 };
751
752 class java_lang_reflect_Parameter {
753 private:
754 // Note that to reduce dependencies on the JDK we compute these
755 // offsets at run-time.
756 static int name_offset;
757 static int modifiers_offset;
758 static int index_offset;
759 static int executable_offset;
760
761 static void compute_offsets();
762
763 public:
764 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
765
766 // Allocation
767 static Handle create(TRAPS);
768
769 // Accessors
770 static oop name(oop field);
771 static void set_name(oop field, oop value);
772
773 static int index(oop reflect);
774 static void set_index(oop reflect, int value);
775
776 static int modifiers(oop reflect);
777 static void set_modifiers(oop reflect, int value);
778
779 static oop executable(oop constructor);
780 static void set_executable(oop constructor, oop value);
781
782 friend class JavaClasses;
783 };
784
785 #define MODULE_INJECTED_FIELDS(macro) \
786 macro(java_lang_Module, module_entry, intptr_signature, false)
787
788 class java_lang_Module {
789 private:
790 static int loader_offset;
791 static int name_offset;
792 static int _module_entry_offset;
793 static void compute_offsets();
794
795 public:
796 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
797
798 // Allocation
799 static Handle create(Handle loader, Handle module_name, TRAPS);
800
801 // Testers
802 static bool is_instance(oop obj);
803
804 // Accessors
805 static oop loader(oop module);
806 static void set_loader(oop module, oop value);
807
808 static oop name(oop module);
809 static void set_name(oop module, oop value);
810
811 static ModuleEntry* module_entry(oop module);
812 static void set_module_entry(oop module, ModuleEntry* module_entry);
813
814 friend class JavaClasses;
815 };
816
817 // Interface to jdk.internal.reflect.ConstantPool objects
818 class reflect_ConstantPool {
819 private:
820 // Note that to reduce dependencies on the JDK we compute these
821 // offsets at run-time.
822 static int _oop_offset;
823
824 static void compute_offsets();
825
826 public:
827 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
828
829 // Allocation
830 static Handle create(TRAPS);
831
832 // Accessors
833 static void set_cp(oop reflect, ConstantPool* value);
834 static int oop_offset() {
835 return _oop_offset;
836 }
837
838 static ConstantPool* get_cp(oop reflect);
839
840 // Debugging
841 friend class JavaClasses;
842 };
843
844 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
845 class reflect_UnsafeStaticFieldAccessorImpl {
846 private:
847 static int _base_offset;
848 static void compute_offsets();
849
850 public:
851 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
852
853 static int base_offset() {
854 return _base_offset;
855 }
856
857 // Debugging
858 friend class JavaClasses;
859 };
860
861 // Interface to java.lang primitive type boxing objects:
862 // - java.lang.Boolean
863 // - java.lang.Character
864 // - java.lang.Float
865 // - java.lang.Double
866 // - java.lang.Byte
867 // - java.lang.Short
868 // - java.lang.Integer
869 // - java.lang.Long
870
871 // This could be separated out into 8 individual classes.
872
873 class java_lang_boxing_object: AllStatic {
874 private:
875 enum {
876 hc_value_offset = 0
877 };
878 static int value_offset;
879 static int long_value_offset;
880
881 static oop initialize_and_allocate(BasicType type, TRAPS);
882 public:
883 // Allocation. Returns a boxed value, or NULL for invalid type.
884 static oop create(BasicType type, jvalue* value, TRAPS);
885 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
886 static BasicType get_value(oop box, jvalue* value);
887 static BasicType set_value(oop box, jvalue* value);
888 static BasicType basic_type(oop box);
889 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
890 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
891 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
892 static void print(BasicType type, jvalue* value, outputStream* st);
893
894 static int value_offset_in_bytes(BasicType type) {
895 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
896 value_offset;
897 }
898
899 // Debugging
900 friend class JavaClasses;
901 };
902
903
904
905 // Interface to java.lang.ref.Reference objects
906
907 class java_lang_ref_Reference: AllStatic {
908 public:
909 enum {
910 hc_referent_offset = 0,
911 hc_queue_offset = 1,
912 hc_next_offset = 2,
913 hc_discovered_offset = 3 // Is not last, see SoftRefs.
914 };
915
916 static int referent_offset;
917 static int queue_offset;
918 static int next_offset;
919 static int discovered_offset;
920
921 // Accessors
922 static inline oop referent(oop ref);
923 static inline void set_referent(oop ref, oop value);
924 static inline void set_referent_raw(oop ref, oop value);
925 static inline HeapWord* referent_addr_raw(oop ref);
926 static inline oop next(oop ref);
927 static inline void set_next(oop ref, oop value);
928 static inline void set_next_raw(oop ref, oop value);
929 static inline HeapWord* next_addr_raw(oop ref);
930 static inline oop discovered(oop ref);
931 static inline void set_discovered(oop ref, oop value);
932 static inline void set_discovered_raw(oop ref, oop value);
933 static inline HeapWord* discovered_addr_raw(oop ref);
934 static inline oop queue(oop ref);
935 static inline void set_queue(oop ref, oop value);
936 static bool is_referent_field(oop obj, ptrdiff_t offset);
937 static inline bool is_final(oop ref);
938 static inline bool is_phantom(oop ref);
939 };
940
941
942 // Interface to java.lang.ref.SoftReference objects
943
944 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
945 public:
946 static int timestamp_offset;
947 static int static_clock_offset;
948
949 // Accessors
950 static jlong timestamp(oop ref);
951
952 // Accessors for statics
953 static jlong clock();
954 static void set_clock(jlong value);
955
956 static void compute_offsets();
957 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
958 };
959
960 // Interface to java.lang.invoke.MethodHandle objects
961
962 class MethodHandleEntry;
963
964 class java_lang_invoke_MethodHandle: AllStatic {
965 friend class JavaClasses;
966
967 private:
968 static int _type_offset; // the MethodType of this MH
969 static int _form_offset; // the LambdaForm of this MH
970
971 static void compute_offsets();
972
973 public:
974 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
975
976 // Accessors
977 static oop type(oop mh);
978 static void set_type(oop mh, oop mtype);
979
980 static oop form(oop mh);
981 static void set_form(oop mh, oop lform);
982
983 // Testers
984 static bool is_subclass(Klass* klass) {
985 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
986 }
987 static bool is_instance(oop obj);
988
989 // Accessors for code generation:
990 static int type_offset_in_bytes() { return _type_offset; }
991 static int form_offset_in_bytes() { return _form_offset; }
992 };
993
994 // Interface to java.lang.invoke.DirectMethodHandle objects
995
996 class java_lang_invoke_DirectMethodHandle: AllStatic {
997 friend class JavaClasses;
998
999 private:
1000 static int _member_offset; // the MemberName of this DMH
1001
1002 static void compute_offsets();
1003
1004 public:
1005 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1006
1007 // Accessors
1008 static oop member(oop mh);
1009
1010 // Testers
1011 static bool is_subclass(Klass* klass) {
1012 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1013 }
1014 static bool is_instance(oop obj);
1015
1016 // Accessors for code generation:
1017 static int member_offset_in_bytes() { return _member_offset; }
1018 };
1019
1020 // Interface to java.lang.invoke.LambdaForm objects
1021 // (These are a private interface for managing adapter code generation.)
1022
1023 class java_lang_invoke_LambdaForm: AllStatic {
1024 friend class JavaClasses;
1025
1026 private:
1027 static int _vmentry_offset; // type is MemberName
1028
1029 static void compute_offsets();
1030
1031 public:
1032 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1033
1034 // Accessors
1035 static oop vmentry(oop lform);
1036 static void set_vmentry(oop lform, oop invoker);
1037
1038 // Testers
1039 static bool is_subclass(Klass* klass) {
1040 return SystemDictionary::LambdaForm_klass() != NULL &&
1041 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1042 }
1043 static bool is_instance(oop obj);
1044
1045 // Accessors for code generation:
1046 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1047 };
1048
1049
1050 // Interface to java.lang.invoke.MemberName objects
1051 // (These are a private interface for Java code to query the class hierarchy.)
1052
1053 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1054 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1055 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1056
1057 class java_lang_invoke_ResolvedMethodName : AllStatic {
1058 friend class JavaClasses;
1059
1060 static int _vmtarget_offset;
1061 static int _vmholder_offset;
1062
1063 static void compute_offsets();
1064 public:
1065 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1066
1067 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1068
1069 static Method* vmtarget(oop resolved_method);
1070 static void set_vmtarget(oop resolved_method, Method* method);
1071
1072 // find or create resolved member name
1073 static oop find_resolved_method(const methodHandle& m, TRAPS);
1074
1075 static bool is_instance(oop resolved_method);
1076 };
1077
1078
1079 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1080 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1081
1082
1083 class java_lang_invoke_MemberName: AllStatic {
1084 friend class JavaClasses;
1085
1086 private:
1087 // From java.lang.invoke.MemberName:
1088 // private Class<?> clazz; // class in which the method is defined
1089 // private String name; // may be null if not yet materialized
1090 // private Object type; // may be null if not yet materialized
1091 // private int flags; // modifier bits; see reflect.Modifier
1092 // private ResolvedMethodName method; // holds VM-specific target value
1093 // private intptr_t vmindex; // member index within class or interface
1094 static int _clazz_offset;
1095 static int _name_offset;
1096 static int _type_offset;
1097 static int _flags_offset;
1098 static int _method_offset;
1099 static int _vmindex_offset;
1100
1101 static void compute_offsets();
1102
1103 public:
1104 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1105 // Accessors
1106 static oop clazz(oop mname);
1107 static void set_clazz(oop mname, oop clazz);
1108
1109 static oop type(oop mname);
1110 static void set_type(oop mname, oop type);
1111
1112 static oop name(oop mname);
1113 static void set_name(oop mname, oop name);
1114
1115 static int flags(oop mname);
1116 static void set_flags(oop mname, int flags);
1117
1118 // Link through ResolvedMethodName field to get Method*
1119 static Method* vmtarget(oop mname);
1120 static void set_method(oop mname, oop method);
1121
1122 static intptr_t vmindex(oop mname);
1123 static void set_vmindex(oop mname, intptr_t index);
1124
1125 // Testers
1126 static bool is_subclass(Klass* klass) {
1127 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1128 }
1129 static bool is_instance(oop obj);
1130
1131 static bool is_method(oop obj);
1132
1133 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1134 enum {
1135 MN_IS_METHOD = 0x00010000, // method (not constructor)
1136 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1137 MN_IS_FIELD = 0x00040000, // field
1138 MN_IS_TYPE = 0x00080000, // nested type
1139 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1140 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1141 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1142 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1143 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1144 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1145 };
1146
1147 // Accessors for code generation:
1148 static int clazz_offset_in_bytes() { return _clazz_offset; }
1149 static int type_offset_in_bytes() { return _type_offset; }
1150 static int name_offset_in_bytes() { return _name_offset; }
1151 static int flags_offset_in_bytes() { return _flags_offset; }
1152 static int method_offset_in_bytes() { return _method_offset; }
1153 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1154 };
1155
1156
1157 // Interface to java.lang.invoke.MethodType objects
1158
1159 class java_lang_invoke_MethodType: AllStatic {
1160 friend class JavaClasses;
1161
1162 private:
1163 static int _rtype_offset;
1164 static int _ptypes_offset;
1165
1166 static void compute_offsets();
1167
1168 public:
1169 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1170 // Accessors
1171 static oop rtype(oop mt);
1172 static objArrayOop ptypes(oop mt);
1173
1174 static oop ptype(oop mt, int index);
1175 static int ptype_count(oop mt);
1176
1177 static int ptype_slot_count(oop mt); // extra counts for long/double
1178 static int rtype_slot_count(oop mt); // extra counts for long/double
1179
1180 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1181 static void print_signature(oop mt, outputStream* st);
1182
1183 static bool is_instance(oop obj);
1184
1185 static bool equals(oop mt1, oop mt2);
1186
1187 // Accessors for code generation:
1188 static int rtype_offset_in_bytes() { return _rtype_offset; }
1189 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1190 };
1191
1192
1193 // Interface to java.lang.invoke.CallSite objects
1194
1195 class java_lang_invoke_CallSite: AllStatic {
1196 friend class JavaClasses;
1197
1198 private:
1199 static int _target_offset;
1200 static int _context_offset;
1201
1202 static void compute_offsets();
1203
1204 public:
1205 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1206 // Accessors
1207 static oop target( oop site);
1208 static void set_target( oop site, oop target);
1209 static void set_target_volatile( oop site, oop target);
1210
1211 static oop context_no_keepalive(oop site);
1212
1213 // Testers
1214 static bool is_subclass(Klass* klass) {
1215 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1216 }
1217 static bool is_instance(oop obj);
1218
1219 // Accessors for code generation:
1220 static int target_offset_in_bytes() { return _target_offset; }
1221 };
1222
1223 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1224
1225 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1226 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1227 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1228
1229 class DependencyContext;
1230
1231 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1232 friend class JavaClasses;
1233
1234 private:
1235 static int _vmdependencies_offset;
1236 static int _last_cleanup_offset;
1237
1238 static void compute_offsets();
1239
1240 public:
1241 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1242 // Accessors
1243 static DependencyContext vmdependencies(oop context);
1244
1245 // Testers
1246 static bool is_subclass(Klass* klass) {
1247 return klass->is_subclass_of(SystemDictionary::Context_klass());
1248 }
1249 static bool is_instance(oop obj);
1250 };
1251
1252 // Interface to java.security.AccessControlContext objects
1253
1254 class java_security_AccessControlContext: AllStatic {
1255 private:
1256 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1257 // so we compute the offsets at startup rather than hard-wiring them.
1258 static int _context_offset;
1259 static int _privilegedContext_offset;
1260 static int _isPrivileged_offset;
1261 static int _isAuthorized_offset;
1262
1263 static void compute_offsets();
1264 public:
1265 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1266 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1267
1268 // Debugging/initialization
1269 friend class JavaClasses;
1270 };
1271
1272
1273 // Interface to java.lang.ClassLoader objects
1274
1275 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1276 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1277
1278 class java_lang_ClassLoader : AllStatic {
1279 private:
1280 static int _loader_data_offset;
1281 static bool offsets_computed;
1282 static int parent_offset;
1283 static int parallelCapable_offset;
1284 static int name_offset;
1285 static int nameAndId_offset;
1286 static int unnamedModule_offset;
1287
1288 public:
1289 static void compute_offsets();
1290 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1291
1292 static ClassLoaderData* loader_data_acquire(oop loader);
1293 static ClassLoaderData* loader_data_raw(oop loader);
1294 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1295
1296 static oop parent(oop loader);
1297 static oop name(oop loader);
1298 static oop nameAndId(oop loader);
1299 static bool isAncestor(oop loader, oop cl);
1300
1301 // Support for parallelCapable field
1302 static bool parallelCapable(oop the_class_mirror);
1303
1304 static bool is_trusted_loader(oop loader);
1305
1306 // Return true if this is one of the class loaders associated with
1307 // the generated bytecodes for reflection.
1308 static bool is_reflection_class_loader(oop loader);
1309
1310 // Fix for 4474172
1311 static oop non_reflection_class_loader(oop loader);
1312
1313 // Testers
1314 static bool is_subclass(Klass* klass) {
1315 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1316 }
1317 static bool is_instance(oop obj);
1318
1319 static oop unnamedModule(oop loader);
1320
1321 // Debugging
1322 friend class JavaClasses;
1323 friend class ClassFileParser; // access to number_of_fake_fields
1324 };
1325
1326
1327 // Interface to java.lang.System objects
1328
1329 class java_lang_System : AllStatic {
1330 private:
1331 static int static_in_offset;
1332 static int static_out_offset;
1333 static int static_err_offset;
1334 static int static_security_offset;
1335
1336 public:
1337 static int in_offset_in_bytes();
1338 static int out_offset_in_bytes();
1339 static int err_offset_in_bytes();
1340
1341 static void compute_offsets();
1342 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1343
1344 // Debugging
1345 friend class JavaClasses;
1346 };
1347
1348
1349 // Interface to java.lang.StackTraceElement objects
1350
1351 class java_lang_StackTraceElement: AllStatic {
1352 private:
1353 static int declaringClassObject_offset;
1354 static int classLoaderName_offset;
1355 static int moduleName_offset;
1356 static int moduleVersion_offset;
1357 static int declaringClass_offset;
1358 static int methodName_offset;
1359 static int fileName_offset;
1360 static int lineNumber_offset;
1361
1362 // Setters
1363 static void set_classLoaderName(oop element, oop value);
1364 static void set_moduleName(oop element, oop value);
1365 static void set_moduleVersion(oop element, oop value);
1366 static void set_declaringClass(oop element, oop value);
1367 static void set_methodName(oop element, oop value);
1368 static void set_fileName(oop element, oop value);
1369 static void set_lineNumber(oop element, int value);
1370 static void set_declaringClassObject(oop element, oop value);
1371
1372 public:
1373 // Create an instance of StackTraceElement
1374 static oop create(const methodHandle& method, int bci, TRAPS);
1375
1376 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1377 int version, int bci, Symbol* name, TRAPS);
1378
1379 static void compute_offsets();
1380 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1381
1382 // Debugging
1383 friend class JavaClasses;
1384 };
1385
1386
1387 class Backtrace: AllStatic {
1388 public:
1389 // Helper backtrace functions to store bci|version together.
1390 static int merge_bci_and_version(int bci, int version);
1391 static int merge_mid_and_cpref(int mid, int cpref);
1392 static int bci_at(unsigned int merged);
1393 static int version_at(unsigned int merged);
1394 static int mid_at(unsigned int merged);
1395 static int cpref_at(unsigned int merged);
1396 static int get_line_number(const methodHandle& method, int bci);
1397 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1398
1399 // Debugging
1400 friend class JavaClasses;
1401 };
1402
1403 // Interface to java.lang.StackFrameInfo objects
1404
1405 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1406 macro(java_lang_StackFrameInfo, version, short_signature, false)
1407
1408 class java_lang_StackFrameInfo: AllStatic {
1409 private:
1410 static int _memberName_offset;
1411 static int _bci_offset;
1412 static int _version_offset;
1413
1414 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1415
1416 public:
1417 // Setters
1418 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1419 static void set_bci(oop info, int value);
1420
1421 static void set_version(oop info, short value);
1422
1423 static void compute_offsets();
1424 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1425
1426 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1427
1428 // Debugging
1429 friend class JavaClasses;
1430 };
1431
1432 class java_lang_LiveStackFrameInfo: AllStatic {
1433 private:
1434 static int _monitors_offset;
1435 static int _locals_offset;
1436 static int _operands_offset;
1437 static int _mode_offset;
1438
1439 public:
1440 static void set_monitors(oop info, oop value);
1441 static void set_locals(oop info, oop value);
1442 static void set_operands(oop info, oop value);
1443 static void set_mode(oop info, int value);
1444
1445 static void compute_offsets();
1446 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1447
1448 // Debugging
1449 friend class JavaClasses;
1450 };
1451
1452 // Interface to java.lang.AssertionStatusDirectives objects
1453
1454 class java_lang_AssertionStatusDirectives: AllStatic {
1455 private:
1456 static int classes_offset;
1457 static int classEnabled_offset;
1458 static int packages_offset;
1459 static int packageEnabled_offset;
1460 static int deflt_offset;
1461
1462 public:
1463 // Setters
1464 static void set_classes(oop obj, oop val);
1465 static void set_classEnabled(oop obj, oop val);
1466 static void set_packages(oop obj, oop val);
1467 static void set_packageEnabled(oop obj, oop val);
1468 static void set_deflt(oop obj, bool val);
1469
1470 static void compute_offsets();
1471 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1472
1473 // Debugging
1474 friend class JavaClasses;
1475 };
1476
1477
1478 class java_nio_Buffer: AllStatic {
1479 private:
1480 static int _limit_offset;
1481
1482 public:
1483 static int limit_offset();
1484 static void compute_offsets();
1485 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1486 };
1487
1488 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1489 private:
1490 static int _owner_offset;
1491 public:
1492 static void compute_offsets();
1493 static oop get_owner_threadObj(oop obj);
1494 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1495 };
1496
1497 // Use to declare fields that need to be injected into Java classes
1498 // for the JVM to use. The name_index and signature_index are
1499 // declared in vmSymbols. The may_be_java flag is used to declare
1500 // fields that might already exist in Java but should be injected if
1501 // they don't. Otherwise the field is unconditionally injected and
1502 // the JVM uses the injected one. This is to ensure that name
1503 // collisions don't occur. In general may_be_java should be false
1504 // unless there's a good reason.
1505
1506 class InjectedField {
1507 public:
1508 const SystemDictionary::WKID klass_id;
1509 const vmSymbols::SID name_index;
1510 const vmSymbols::SID signature_index;
1511 const bool may_be_java;
1512
1513
1514 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1515 Symbol* name() const { return lookup_symbol(name_index); }
1516 Symbol* signature() const { return lookup_symbol(signature_index); }
1517
1518 int compute_offset();
1519
1520 // Find the Symbol for this index
1521 static Symbol* lookup_symbol(int symbol_index) {
1522 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1523 }
1524 };
1525
1526 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1527 klass##_##name##_enum,
1528
1529 #define ALL_INJECTED_FIELDS(macro) \
1530 CLASS_INJECTED_FIELDS(macro) \
1531 CLASSLOADER_INJECTED_FIELDS(macro) \
1532 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1533 MEMBERNAME_INJECTED_FIELDS(macro) \
1534 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1535 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1536 MODULE_INJECTED_FIELDS(macro)
1537
1538 // Interface to hard-coded offset checking
1539
1540 class JavaClasses : AllStatic {
1541 private:
1542
1543 static InjectedField _injected_fields[];
1544
1545 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1546 public:
1547 enum InjectedFieldID {
1548 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1549 MAX_enum
1550 };
1551
1552 static int compute_injected_offset(InjectedFieldID id);
1553
1554 static void compute_hard_coded_offsets();
1555 static void compute_offsets();
1556 static void check_offsets() PRODUCT_RETURN;
1557 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1558 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1559 };
1560
1561 #undef DECLARE_INJECTED_FIELD_ENUM
1562
1563 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP