1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32 #include "utilities/utf8.hpp"
33
34 // Interface for manipulating the basic Java classes.
35 //
36 // All dependencies on layout of actual Java classes should be kept here.
37 // If the layout of any of the classes above changes the offsets must be adjusted.
38 //
39 // For most classes we hardwire the offsets for performance reasons. In certain
40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
41 // startup since the layout here differs between JDK1.2 and JDK1.3.
42 //
43 // Note that fields (static and non-static) are arranged with oops before non-oops
44 // on a per class basis. The offsets below have to reflect this ordering.
45 //
46 // When editing the layouts please update the check_offset verification code
47 // correspondingly. The names in the enums must be identical to the actual field
48 // names in order for the verification code to work.
49
50 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
51 f(java_lang_Class) \
52 f(java_lang_String) \
53 //end
54
55 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
56 f(java_lang_System) \
57 f(java_lang_ClassLoader) \
58 f(java_lang_Throwable) \
59 f(java_lang_Thread) \
60 f(java_lang_ThreadGroup) \
61 f(java_lang_AssertionStatusDirectives) \
62 f(java_lang_ref_SoftReference) \
63 f(java_lang_invoke_MethodHandle) \
64 f(java_lang_invoke_DirectMethodHandle) \
65 f(java_lang_invoke_MemberName) \
66 f(java_lang_invoke_ResolvedMethodName) \
67 f(java_lang_invoke_LambdaForm) \
68 f(java_lang_invoke_MethodType) \
69 f(java_lang_invoke_CallSite) \
70 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
71 f(java_security_AccessControlContext) \
72 f(java_lang_reflect_AccessibleObject) \
73 f(java_lang_reflect_Method) \
74 f(java_lang_reflect_Constructor) \
75 f(java_lang_reflect_Field) \
76 f(java_nio_Buffer) \
77 f(reflect_ConstantPool) \
78 f(reflect_UnsafeStaticFieldAccessorImpl) \
79 f(java_lang_reflect_Parameter) \
80 f(java_lang_Module) \
81 f(java_lang_StackTraceElement) \
82 f(java_lang_StackFrameInfo) \
83 f(java_lang_LiveStackFrameInfo) \
84 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
85 f(jdk_internal_module_ArchivedModuleGraph) \
86 f(java_lang_Integer_IntegerCache) \
87 f(java_lang_module_Configuration) \
88 f(java_util_ImmutableCollections_ListN) \
89 f(java_util_ImmutableCollections_MapN) \
90 f(java_util_ImmutableCollections_SetN) \
91 //end
92
93 #define BASIC_JAVA_CLASSES_DO(f) \
94 BASIC_JAVA_CLASSES_DO_PART1(f) \
95 BASIC_JAVA_CLASSES_DO_PART2(f)
96
97 // Interface to java.lang.String objects
98
99 class java_lang_String : AllStatic {
100 private:
101 static int value_offset;
102 static int hash_offset;
103 static int coder_offset;
104
105 static bool initialized;
106
107 static Handle basic_create(int length, bool byte_arr, TRAPS);
108
109 static inline void set_coder(oop string, jbyte coder);
110
111 public:
112
113 // Coders
114 enum Coder {
115 CODER_LATIN1 = 0,
116 CODER_UTF16 = 1
117 };
118
119 static void compute_offsets();
120 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
121
122 // Instance creation
123 static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
124 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
125 static Handle create_from_str(const char* utf8_str, TRAPS);
126 static oop create_oop_from_str(const char* utf8_str, TRAPS);
127 static Handle create_from_symbol(Symbol* symbol, TRAPS);
128 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
129 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
130
131 static void set_compact_strings(bool value);
132
133 static int value_offset_in_bytes() {
134 assert(initialized && (value_offset > 0), "Must be initialized");
135 return value_offset;
136 }
137 static int hash_offset_in_bytes() {
138 assert(initialized && (hash_offset > 0), "Must be initialized");
139 return hash_offset;
140 }
141 static int coder_offset_in_bytes() {
142 assert(initialized && (coder_offset > 0), "Must be initialized");
143 return coder_offset;
144 }
145
146 static inline void set_value_raw(oop string, typeArrayOop buffer);
147 static inline void set_value(oop string, typeArrayOop buffer);
148 static inline void set_hash(oop string, unsigned int hash);
149
150 // Accessors
151 static inline typeArrayOop value(oop java_string);
152 static inline typeArrayOop value_no_keepalive(oop java_string);
153 static inline unsigned int hash(oop java_string);
154 static inline bool is_latin1(oop java_string);
155 static inline int length(oop java_string);
156 static int utf8_length(oop java_string);
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, int start, int len, char* buf, int buflen);
163 static char* as_platform_dependent_str(Handle java_string, TRAPS);
164 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
165 // produce an ascii string with all other values quoted using \u####
166 static char* as_quoted_ascii(oop java_string);
167
168 // Compute the hash value for a java.lang.String object which would
169 // contain the characters passed in.
170 //
171 // As the hash value used by the String object itself, in
172 // String.hashCode(). This value is normally calculated in Java code
173 // in the String.hashCode method(), but is precomputed for String
174 // objects in the shared archive file.
175 // hash P(31) from Kernighan & Ritchie
176 //
177 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
178 static unsigned int hash_code(const jchar* s, int len) {
179 unsigned int h = 0;
180 while (len-- > 0) {
181 h = 31*h + (unsigned int) *s;
182 s++;
183 }
184 return h;
185 }
186
187 static unsigned int hash_code(const jbyte* s, int len) {
188 unsigned int h = 0;
189 while (len-- > 0) {
190 h = 31*h + (((unsigned int) *s) & 0xFF);
191 s++;
192 }
193 return h;
194 }
195
196 static unsigned int hash_code(oop java_string);
197
198 static bool equals(oop java_string, jchar* chars, int len);
199 static bool equals(oop str1, oop str2);
200
201 // Conversion between '.' and '/' formats
202 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
203 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
204
205 // Conversion
206 static Symbol* as_symbol(oop java_string, TRAPS);
207 static Symbol* as_symbol_or_null(oop java_string);
208
209 // Testers
210 static bool is_instance(oop obj);
211 static inline bool is_instance_inlined(oop obj);
212
213 // Debugging
214 static void print(oop java_string, outputStream* st);
215 friend class JavaClasses;
216 friend class StringTable;
217 };
218
219
220 // Interface to java.lang.Class objects
221
222 #define CLASS_INJECTED_FIELDS(macro) \
223 macro(java_lang_Class, klass, intptr_signature, false) \
224 macro(java_lang_Class, array_klass, intptr_signature, false) \
225 macro(java_lang_Class, oop_size, int_signature, false) \
226 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
227 macro(java_lang_Class, protection_domain, object_signature, false) \
228 macro(java_lang_Class, signers, 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
250 static bool offsets_computed;
251 static int classRedefinedCount_offset;
252
253 static GrowableArray<Klass*>* _fixup_mirror_list;
254 static GrowableArray<Klass*>* _fixup_module_field_list;
255
256 static void set_init_lock(oop java_class, oop init_lock);
257 static void set_protection_domain(oop java_class, oop protection_domain);
258 static void set_class_loader(oop java_class, oop class_loader);
259 static void set_component_mirror(oop java_class, oop comp_mirror);
260 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
261 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
262 public:
263 static void allocate_fixup_lists();
264 static void compute_offsets();
265
266 // Instance creation
267 static void create_mirror(Klass* k, Handle class_loader, Handle module,
268 Handle protection_domain, TRAPS);
269 static void fixup_mirror(Klass* k, TRAPS);
270 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
271
272 // Archiving
273 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
274 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
275 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
276 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
277 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
278 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
279 Handle protection_domain,
280 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
281
282 static void fixup_module_field(Klass* k, Handle module);
283
284 // Conversion
285 static Klass* as_Klass(oop java_class);
286 static void set_klass(oop java_class, Klass* klass);
287 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
288 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
289 static void print_signature(oop java_class, outputStream *st);
290 static const char* as_external_name(oop java_class);
291 // Testing
292 static bool is_instance(oop obj);
293
294 static bool is_primitive(oop java_class);
295 static BasicType primitive_type(oop java_class);
296 static oop primitive_mirror(BasicType t);
297 // JVM_NewArray support
298 static Klass* array_klass_acquire(oop java_class);
299 static void release_set_array_klass(oop java_class, Klass* klass);
300 // compiler support for class operations
301 static int klass_offset_in_bytes() { return _klass_offset; }
302 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
303 // Support for classRedefinedCount field
304 static int classRedefinedCount(oop the_class_mirror);
305 static void set_classRedefinedCount(oop the_class_mirror, int value);
306
307 // Support for embedded per-class oops
308 static oop protection_domain(oop java_class);
309 static oop init_lock(oop java_class);
310 static oop component_mirror(oop java_class);
311 static objArrayOop signers(oop java_class);
312 static void set_signers(oop java_class, objArrayOop signers);
313
314 static oop class_loader(oop java_class);
315 static void set_module(oop java_class, oop module);
316 static oop module(oop java_class);
317
318 static int oop_size(oop java_class);
319 static void set_oop_size(HeapWord* java_class, int size);
320 static int static_oop_field_count(oop java_class);
321 static void set_static_oop_field_count(oop java_class, int size);
322
323 static GrowableArray<Klass*>* fixup_mirror_list() {
324 return _fixup_mirror_list;
325 }
326 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
327 _fixup_mirror_list = v;
328 }
329
330 static GrowableArray<Klass*>* fixup_module_field_list() {
331 return _fixup_module_field_list;
332 }
333 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
334 _fixup_module_field_list = v;
335 }
336
337 // Debugging
338 friend class JavaClasses;
339 friend class InstanceKlass; // verification code accesses offsets
340 friend class ClassFileParser; // access to number_of_fake_fields
341 };
342
343 // Interface to java.lang.Thread objects
344
345 class java_lang_Thread : AllStatic {
346 private:
347 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
348 // so we compute the offsets at startup rather than hard-wiring them.
349 static int _name_offset;
350 static int _group_offset;
351 static int _contextClassLoader_offset;
352 static int _inheritedAccessControlContext_offset;
353 static int _priority_offset;
354 static int _eetop_offset;
355 static int _daemon_offset;
356 static int _stillborn_offset;
357 static int _stackSize_offset;
358 static int _tid_offset;
359 static int _thread_status_offset;
360 static int _park_blocker_offset;
361 static int _park_event_offset ;
362
363 static void compute_offsets();
364
365 public:
366 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
367
368 // Instance creation
369 static oop create();
370 // Returns the JavaThread associated with the thread obj
371 static JavaThread* thread(oop java_thread);
372 // Set JavaThread for instance
373 static void set_thread(oop java_thread, JavaThread* thread);
374 // Name
375 static oop name(oop java_thread);
376 static void set_name(oop java_thread, oop name);
377 // Priority
378 static ThreadPriority priority(oop java_thread);
379 static void set_priority(oop java_thread, ThreadPriority priority);
380 // Thread group
381 static oop threadGroup(oop java_thread);
382 // Stillborn
383 static bool is_stillborn(oop java_thread);
384 static void set_stillborn(oop java_thread);
385 // Alive (NOTE: this is not really a field, but provides the correct
386 // definition without doing a Java call)
387 static bool is_alive(oop java_thread);
388 // Daemon
389 static bool is_daemon(oop java_thread);
390 static void set_daemon(oop java_thread);
391 // Context ClassLoader
392 static oop context_class_loader(oop java_thread);
393 // Control context
394 static oop inherited_access_control_context(oop java_thread);
395 // Stack size hint
396 static jlong stackSize(oop java_thread);
397 // Thread ID
398 static jlong thread_id(oop java_thread);
399
400 // Blocker object responsible for thread parking
401 static oop park_blocker(oop java_thread);
402
403 // Pointer to type-stable park handler, encoded as jlong.
404 // Should be set when apparently null
405 // For details, see unsafe.cpp Unsafe_Unpark
406 static jlong park_event(oop java_thread);
407 static bool set_park_event(oop java_thread, jlong ptr);
408
409 // Java Thread Status for JVMTI and M&M use.
410 // This thread status info is saved in threadStatus field of
411 // java.lang.Thread java class.
412 enum ThreadStatus {
413 NEW = 0,
414 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
415 JVMTI_THREAD_STATE_RUNNABLE,
416 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
417 JVMTI_THREAD_STATE_WAITING +
418 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
419 JVMTI_THREAD_STATE_SLEEPING,
420 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
421 JVMTI_THREAD_STATE_WAITING +
422 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
423 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
424 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
425 JVMTI_THREAD_STATE_WAITING +
426 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
427 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
428 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
429 JVMTI_THREAD_STATE_WAITING +
430 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
431 JVMTI_THREAD_STATE_PARKED,
432 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
433 JVMTI_THREAD_STATE_WAITING +
434 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
435 JVMTI_THREAD_STATE_PARKED,
436 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
437 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
438 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
439 };
440 // Write thread status info to threadStatus field of java.lang.Thread.
441 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
442 // Read thread status info from threadStatus field of java.lang.Thread.
443 static ThreadStatus get_thread_status(oop java_thread_oop);
444
445 static const char* thread_status_name(oop java_thread_oop);
446
447 // Debugging
448 friend class JavaClasses;
449 };
450
451 // Interface to java.lang.ThreadGroup objects
452
453 class java_lang_ThreadGroup : AllStatic {
454 private:
455 static int _parent_offset;
456 static int _name_offset;
457 static int _threads_offset;
458 static int _groups_offset;
459 static int _maxPriority_offset;
460 static int _destroyed_offset;
461 static int _daemon_offset;
462 static int _nthreads_offset;
463 static int _ngroups_offset;
464
465 static void compute_offsets();
466
467 public:
468 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
469
470 // parent ThreadGroup
471 static oop parent(oop java_thread_group);
472 // name
473 static const char* name(oop java_thread_group);
474 // ("name as oop" accessor is not necessary)
475 // Number of threads in group
476 static int nthreads(oop java_thread_group);
477 // threads
478 static objArrayOop threads(oop java_thread_group);
479 // Number of threads in group
480 static int ngroups(oop java_thread_group);
481 // groups
482 static objArrayOop groups(oop java_thread_group);
483 // maxPriority in group
484 static ThreadPriority maxPriority(oop java_thread_group);
485 // Destroyed
486 static bool is_destroyed(oop java_thread_group);
487 // Daemon
488 static bool is_daemon(oop java_thread_group);
489 // Debugging
490 friend class JavaClasses;
491 };
492
493
494
495 // Interface to java.lang.Throwable objects
496
497 class java_lang_Throwable: AllStatic {
498 friend class BacktraceBuilder;
499 friend class BacktraceIterator;
500
501 private:
502 // Offsets
503 enum {
504 hc_backtrace_offset = 0,
505 hc_detailMessage_offset = 1,
506 hc_cause_offset = 2, // New since 1.4
507 hc_stackTrace_offset = 3 // New since 1.4
508 };
509 // Trace constants
510 enum {
511 trace_methods_offset = 0,
512 trace_bcis_offset = 1,
513 trace_mirrors_offset = 2,
514 trace_names_offset = 3,
515 trace_next_offset = 4,
516 trace_size = 5,
517 trace_chunk_size = 32
518 };
519
520 static int backtrace_offset;
521 static int detailMessage_offset;
522 static int stackTrace_offset;
523 static int depth_offset;
524 static int static_unassigned_stacktrace_offset;
525
526 // StackTrace (programmatic access, new since 1.4)
527 static void clear_stacktrace(oop throwable);
528 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
529 static void set_stacktrace(oop throwable, oop st_element_array);
530 static oop unassigned_stacktrace();
531
532 public:
533 // Backtrace
534 static oop backtrace(oop throwable);
535 static void set_backtrace(oop throwable, oop value);
536 static int depth(oop throwable);
537 static void set_depth(oop throwable, int value);
538 // Needed by JVMTI to filter out this internal field.
539 static int get_backtrace_offset() { return backtrace_offset;}
540 static int get_detailMessage_offset() { return detailMessage_offset;}
541 // Message
542 static oop message(oop throwable);
543 static void set_message(oop throwable, oop value);
544 static Symbol* detail_message(oop throwable);
545 static void print_stack_element(outputStream *st, const methodHandle& method, int bci);
546 static void print_stack_usage(Handle stream);
547
548 static void compute_offsets();
549 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
550
551 // Allocate space for backtrace (created but stack trace not filled in)
552 static void allocate_backtrace(Handle throwable, TRAPS);
553 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
554 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
555 // Fill in current stack trace, can cause GC
556 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
557 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
558 // Programmatic access to stack trace
559 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
560 // Printing
561 static void print(oop throwable, outputStream* st);
562 static void print_stack_trace(Handle throwable, outputStream* st);
563 static void java_printStackTrace(Handle throwable, TRAPS);
564 // Debugging
565 friend class JavaClasses;
566 };
567
568
569 // Interface to java.lang.reflect.AccessibleObject objects
570
571 class java_lang_reflect_AccessibleObject: AllStatic {
572 private:
573 // Note that to reduce dependencies on the JDK we compute these
574 // offsets at run-time.
575 static int override_offset;
576
577 static void compute_offsets();
578
579 public:
580 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
581
582 // Accessors
583 static jboolean override(oop reflect);
584 static void set_override(oop reflect, jboolean value);
585
586 // Debugging
587 friend class JavaClasses;
588 };
589
590
591 // Interface to java.lang.reflect.Method objects
592
593 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
594 private:
595 // Note that to reduce dependencies on the JDK we compute these
596 // offsets at run-time.
597 static int clazz_offset;
598 static int name_offset;
599 static int returnType_offset;
600 static int parameterTypes_offset;
601 static int exceptionTypes_offset;
602 static int slot_offset;
603 static int modifiers_offset;
604 static int signature_offset;
605 static int annotations_offset;
606 static int parameter_annotations_offset;
607 static int annotation_default_offset;
608 static int type_annotations_offset;
609
610 static void compute_offsets();
611
612 public:
613 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
614
615 // Allocation
616 static Handle create(TRAPS);
617
618 // Accessors
619 static oop clazz(oop reflect);
620 static void set_clazz(oop reflect, oop value);
621
622 static oop name(oop method);
623 static void set_name(oop method, oop value);
624
625 static oop return_type(oop method);
626 static void set_return_type(oop method, oop value);
627
628 static oop parameter_types(oop method);
629 static void set_parameter_types(oop method, oop value);
630
631 static oop exception_types(oop method);
632 static void set_exception_types(oop method, oop value);
633
634 static int slot(oop reflect);
635 static void set_slot(oop reflect, int value);
636
637 static int modifiers(oop method);
638 static void set_modifiers(oop method, int value);
639
640 static bool has_signature_field();
641 static oop signature(oop method);
642 static void set_signature(oop method, oop value);
643
644 static bool has_annotations_field();
645 static oop annotations(oop method);
646 static void set_annotations(oop method, oop value);
647
648 static bool has_parameter_annotations_field();
649 static oop parameter_annotations(oop method);
650 static void set_parameter_annotations(oop method, oop value);
651
652 static bool has_annotation_default_field();
653 static oop annotation_default(oop method);
654 static void set_annotation_default(oop method, oop value);
655
656 static bool has_type_annotations_field();
657 static oop type_annotations(oop method);
658 static void set_type_annotations(oop method, oop value);
659
660 // Debugging
661 friend class JavaClasses;
662 };
663
664
665 // Interface to java.lang.reflect.Constructor objects
666
667 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
668 private:
669 // Note that to reduce dependencies on the JDK we compute these
670 // offsets at run-time.
671 static int clazz_offset;
672 static int parameterTypes_offset;
673 static int exceptionTypes_offset;
674 static int slot_offset;
675 static int modifiers_offset;
676 static int signature_offset;
677 static int annotations_offset;
678 static int parameter_annotations_offset;
679 static int type_annotations_offset;
680
681 static void compute_offsets();
682
683 public:
684 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
685
686 // Allocation
687 static Handle create(TRAPS);
688
689 // Accessors
690 static oop clazz(oop reflect);
691 static void set_clazz(oop reflect, oop value);
692
693 static oop parameter_types(oop constructor);
694 static void set_parameter_types(oop constructor, oop value);
695
696 static oop exception_types(oop constructor);
697 static void set_exception_types(oop constructor, oop value);
698
699 static int slot(oop reflect);
700 static void set_slot(oop reflect, int value);
701
702 static int modifiers(oop constructor);
703 static void set_modifiers(oop constructor, int value);
704
705 static bool has_signature_field();
706 static oop signature(oop constructor);
707 static void set_signature(oop constructor, oop value);
708
709 static bool has_annotations_field();
710 static oop annotations(oop constructor);
711 static void set_annotations(oop constructor, oop value);
712
713 static bool has_parameter_annotations_field();
714 static oop parameter_annotations(oop method);
715 static void set_parameter_annotations(oop method, oop value);
716
717 static bool has_type_annotations_field();
718 static oop type_annotations(oop constructor);
719 static void set_type_annotations(oop constructor, oop value);
720
721 // Debugging
722 friend class JavaClasses;
723 };
724
725
726 // Interface to java.lang.reflect.Field objects
727
728 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
729 private:
730 // Note that to reduce dependencies on the JDK we compute these
731 // offsets at run-time.
732 static int clazz_offset;
733 static int name_offset;
734 static int type_offset;
735 static int slot_offset;
736 static int modifiers_offset;
737 static int signature_offset;
738 static int annotations_offset;
739 static int type_annotations_offset;
740
741 static void compute_offsets();
742
743 public:
744 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
745
746 // Allocation
747 static Handle create(TRAPS);
748
749 // Accessors
750 static oop clazz(oop reflect);
751 static void set_clazz(oop reflect, oop value);
752
753 static oop name(oop field);
754 static void set_name(oop field, oop value);
755
756 static oop type(oop field);
757 static void set_type(oop field, oop value);
758
759 static int slot(oop reflect);
760 static void set_slot(oop reflect, int value);
761
762 static int modifiers(oop field);
763 static void set_modifiers(oop field, int value);
764
765 static bool has_signature_field();
766 static oop signature(oop constructor);
767 static void set_signature(oop constructor, oop value);
768
769 static bool has_annotations_field();
770 static oop annotations(oop constructor);
771 static void set_annotations(oop constructor, oop value);
772
773 static bool has_parameter_annotations_field();
774 static oop parameter_annotations(oop method);
775 static void set_parameter_annotations(oop method, oop value);
776
777 static bool has_annotation_default_field();
778 static oop annotation_default(oop method);
779 static void set_annotation_default(oop method, oop value);
780
781 static bool has_type_annotations_field();
782 static oop type_annotations(oop field);
783 static void set_type_annotations(oop field, oop value);
784
785 // Debugging
786 friend class JavaClasses;
787 };
788
789 class java_lang_reflect_Parameter {
790 private:
791 // Note that to reduce dependencies on the JDK we compute these
792 // offsets at run-time.
793 static int name_offset;
794 static int modifiers_offset;
795 static int index_offset;
796 static int executable_offset;
797
798 static void compute_offsets();
799
800 public:
801 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
802
803 // Allocation
804 static Handle create(TRAPS);
805
806 // Accessors
807 static oop name(oop field);
808 static void set_name(oop field, oop value);
809
810 static int index(oop reflect);
811 static void set_index(oop reflect, int value);
812
813 static int modifiers(oop reflect);
814 static void set_modifiers(oop reflect, int value);
815
816 static oop executable(oop constructor);
817 static void set_executable(oop constructor, oop value);
818
819 friend class JavaClasses;
820 };
821
822 #define MODULE_INJECTED_FIELDS(macro) \
823 macro(java_lang_Module, module_entry, intptr_signature, false)
824
825 class java_lang_Module {
826 private:
827 static int loader_offset;
828 static int name_offset;
829 static int _module_entry_offset;
830 static void compute_offsets();
831
832 public:
833 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
834
835 // Allocation
836 static Handle create(Handle loader, Handle module_name, TRAPS);
837
838 // Testers
839 static bool is_instance(oop obj);
840
841 // Accessors
842 static oop loader(oop module);
843 static void set_loader(oop module, oop value);
844
845 static oop name(oop module);
846 static void set_name(oop module, oop value);
847
848 static ModuleEntry* module_entry(oop module);
849 static void set_module_entry(oop module, ModuleEntry* module_entry);
850
851 friend class JavaClasses;
852 };
853
854 // Interface to jdk.internal.reflect.ConstantPool objects
855 class reflect_ConstantPool {
856 private:
857 // Note that to reduce dependencies on the JDK we compute these
858 // offsets at run-time.
859 static int _oop_offset;
860
861 static void compute_offsets();
862
863 public:
864 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
865
866 // Allocation
867 static Handle create(TRAPS);
868
869 // Accessors
870 static void set_cp(oop reflect, ConstantPool* value);
871 static int oop_offset() {
872 return _oop_offset;
873 }
874
875 static ConstantPool* get_cp(oop reflect);
876
877 // Debugging
878 friend class JavaClasses;
879 };
880
881 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
882 class reflect_UnsafeStaticFieldAccessorImpl {
883 private:
884 static int _base_offset;
885 static void compute_offsets();
886
887 public:
888 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
889
890 static int base_offset() {
891 return _base_offset;
892 }
893
894 // Debugging
895 friend class JavaClasses;
896 };
897
898 // Interface to java.lang primitive type boxing objects:
899 // - java.lang.Boolean
900 // - java.lang.Character
901 // - java.lang.Float
902 // - java.lang.Double
903 // - java.lang.Byte
904 // - java.lang.Short
905 // - java.lang.Integer
906 // - java.lang.Long
907
908 // This could be separated out into 8 individual classes.
909
910 class java_lang_boxing_object: AllStatic {
911 private:
912 enum {
913 hc_value_offset = 0
914 };
915 static int value_offset;
916 static int long_value_offset;
917
918 static oop initialize_and_allocate(BasicType type, TRAPS);
919 public:
920 // Allocation. Returns a boxed value, or NULL for invalid type.
921 static oop create(BasicType type, jvalue* value, TRAPS);
922 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
923 static BasicType get_value(oop box, jvalue* value);
924 static BasicType set_value(oop box, jvalue* value);
925 static BasicType basic_type(oop box);
926 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
927 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
928 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
929 static void print(BasicType type, jvalue* value, outputStream* st);
930
931 static int value_offset_in_bytes(BasicType type) {
932 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
933 value_offset;
934 }
935
936 // Debugging
937 friend class JavaClasses;
938 };
939
940
941
942 // Interface to java.lang.ref.Reference objects
943
944 class java_lang_ref_Reference: AllStatic {
945 public:
946 enum {
947 hc_referent_offset = 0,
948 hc_queue_offset = 1,
949 hc_next_offset = 2,
950 hc_discovered_offset = 3 // Is not last, see SoftRefs.
951 };
952
953 static int referent_offset;
954 static int queue_offset;
955 static int next_offset;
956 static int discovered_offset;
957
958 // Accessors
959 static inline oop referent(oop ref);
960 static inline void set_referent(oop ref, oop value);
961 static inline void set_referent_raw(oop ref, oop value);
962 static inline HeapWord* referent_addr_raw(oop ref);
963 static inline oop next(oop ref);
964 static inline void set_next(oop ref, oop value);
965 static inline void set_next_raw(oop ref, oop value);
966 static inline HeapWord* next_addr_raw(oop ref);
967 static inline oop discovered(oop ref);
968 static inline void set_discovered(oop ref, oop value);
969 static inline void set_discovered_raw(oop ref, oop value);
970 static inline HeapWord* discovered_addr_raw(oop ref);
971 static inline oop queue(oop ref);
972 static inline void set_queue(oop ref, oop value);
973 static bool is_referent_field(oop obj, ptrdiff_t offset);
974 static inline bool is_phantom(oop ref);
975 };
976
977
978 // Interface to java.lang.ref.SoftReference objects
979
980 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
981 public:
982 static int timestamp_offset;
983 static int static_clock_offset;
984
985 // Accessors
986 static jlong timestamp(oop ref);
987
988 // Accessors for statics
989 static jlong clock();
990 static void set_clock(jlong value);
991
992 static void compute_offsets();
993 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
994 };
995
996 // Interface to java.lang.invoke.MethodHandle objects
997
998 class MethodHandleEntry;
999
1000 class java_lang_invoke_MethodHandle: AllStatic {
1001 friend class JavaClasses;
1002
1003 private:
1004 static int _type_offset; // the MethodType of this MH
1005 static int _form_offset; // the LambdaForm of this MH
1006
1007 static void compute_offsets();
1008
1009 public:
1010 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1011
1012 // Accessors
1013 static oop type(oop mh);
1014 static void set_type(oop mh, oop mtype);
1015
1016 static oop form(oop mh);
1017 static void set_form(oop mh, oop lform);
1018
1019 // Testers
1020 static bool is_subclass(Klass* klass) {
1021 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1022 }
1023 static bool is_instance(oop obj);
1024
1025 // Accessors for code generation:
1026 static int type_offset_in_bytes() { return _type_offset; }
1027 static int form_offset_in_bytes() { return _form_offset; }
1028 };
1029
1030 // Interface to java.lang.invoke.DirectMethodHandle objects
1031
1032 class java_lang_invoke_DirectMethodHandle: AllStatic {
1033 friend class JavaClasses;
1034
1035 private:
1036 static int _member_offset; // the MemberName of this DMH
1037
1038 static void compute_offsets();
1039
1040 public:
1041 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1042
1043 // Accessors
1044 static oop member(oop mh);
1045
1046 // Testers
1047 static bool is_subclass(Klass* klass) {
1048 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1049 }
1050 static bool is_instance(oop obj);
1051
1052 // Accessors for code generation:
1053 static int member_offset_in_bytes() { return _member_offset; }
1054 };
1055
1056 // Interface to java.lang.invoke.LambdaForm objects
1057 // (These are a private interface for managing adapter code generation.)
1058
1059 class java_lang_invoke_LambdaForm: AllStatic {
1060 friend class JavaClasses;
1061
1062 private:
1063 static int _vmentry_offset; // type is MemberName
1064
1065 static void compute_offsets();
1066
1067 public:
1068 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1069
1070 // Accessors
1071 static oop vmentry(oop lform);
1072 static void set_vmentry(oop lform, oop invoker);
1073
1074 // Testers
1075 static bool is_subclass(Klass* klass) {
1076 return SystemDictionary::LambdaForm_klass() != NULL &&
1077 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1078 }
1079 static bool is_instance(oop obj);
1080
1081 // Accessors for code generation:
1082 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1083 };
1084
1085
1086 // Interface to java.lang.invoke.MemberName objects
1087 // (These are a private interface for Java code to query the class hierarchy.)
1088
1089 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1090 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1091 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1092
1093 class java_lang_invoke_ResolvedMethodName : AllStatic {
1094 friend class JavaClasses;
1095
1096 static int _vmtarget_offset;
1097 static int _vmholder_offset;
1098
1099 static void compute_offsets();
1100 public:
1101 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1102
1103 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1104
1105 static Method* vmtarget(oop resolved_method);
1106 static void set_vmtarget(oop resolved_method, Method* method);
1107
1108 // find or create resolved member name
1109 static oop find_resolved_method(const methodHandle& m, TRAPS);
1110
1111 static bool is_instance(oop resolved_method);
1112 };
1113
1114
1115 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1116 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1117
1118
1119 class java_lang_invoke_MemberName: AllStatic {
1120 friend class JavaClasses;
1121
1122 private:
1123 // From java.lang.invoke.MemberName:
1124 // private Class<?> clazz; // class in which the method is defined
1125 // private String name; // may be null if not yet materialized
1126 // private Object type; // may be null if not yet materialized
1127 // private int flags; // modifier bits; see reflect.Modifier
1128 // private ResolvedMethodName method; // holds VM-specific target value
1129 // private intptr_t vmindex; // member index within class or interface
1130 static int _clazz_offset;
1131 static int _name_offset;
1132 static int _type_offset;
1133 static int _flags_offset;
1134 static int _method_offset;
1135 static int _vmindex_offset;
1136
1137 static void compute_offsets();
1138
1139 public:
1140 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1141 // Accessors
1142 static oop clazz(oop mname);
1143 static void set_clazz(oop mname, oop clazz);
1144
1145 static oop type(oop mname);
1146 static void set_type(oop mname, oop type);
1147
1148 static oop name(oop mname);
1149 static void set_name(oop mname, oop name);
1150
1151 static int flags(oop mname);
1152 static void set_flags(oop mname, int flags);
1153
1154 // Link through ResolvedMethodName field to get Method*
1155 static Method* vmtarget(oop mname);
1156 static void set_method(oop mname, oop method);
1157
1158 static intptr_t vmindex(oop mname);
1159 static void set_vmindex(oop mname, intptr_t index);
1160
1161 // Testers
1162 static bool is_subclass(Klass* klass) {
1163 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1164 }
1165 static bool is_instance(oop obj);
1166
1167 static bool is_method(oop obj);
1168
1169 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1170 enum {
1171 MN_IS_METHOD = 0x00010000, // method (not constructor)
1172 MN_IS_CONSTRUCTOR = 0x00020000, // constructor
1173 MN_IS_FIELD = 0x00040000, // field
1174 MN_IS_TYPE = 0x00080000, // nested type
1175 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1176 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1177 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1178 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1179 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1180 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1181 };
1182
1183 // Accessors for code generation:
1184 static int clazz_offset_in_bytes() { return _clazz_offset; }
1185 static int type_offset_in_bytes() { return _type_offset; }
1186 static int name_offset_in_bytes() { return _name_offset; }
1187 static int flags_offset_in_bytes() { return _flags_offset; }
1188 static int method_offset_in_bytes() { return _method_offset; }
1189 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1190 };
1191
1192
1193 // Interface to java.lang.invoke.MethodType objects
1194
1195 class java_lang_invoke_MethodType: AllStatic {
1196 friend class JavaClasses;
1197
1198 private:
1199 static int _rtype_offset;
1200 static int _ptypes_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 rtype(oop mt);
1208 static objArrayOop ptypes(oop mt);
1209
1210 static oop ptype(oop mt, int index);
1211 static int ptype_count(oop mt);
1212
1213 static int ptype_slot_count(oop mt); // extra counts for long/double
1214 static int rtype_slot_count(oop mt); // extra counts for long/double
1215
1216 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
1217 static void print_signature(oop mt, outputStream* st);
1218
1219 static bool is_instance(oop obj);
1220
1221 static bool equals(oop mt1, oop mt2);
1222
1223 // Accessors for code generation:
1224 static int rtype_offset_in_bytes() { return _rtype_offset; }
1225 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1226 };
1227
1228
1229 // Interface to java.lang.invoke.CallSite objects
1230
1231 class java_lang_invoke_CallSite: AllStatic {
1232 friend class JavaClasses;
1233
1234 private:
1235 static int _target_offset;
1236 static int _context_offset;
1237
1238 static void compute_offsets();
1239
1240 public:
1241 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1242 // Accessors
1243 static oop target( oop site);
1244 static void set_target( oop site, oop target);
1245 static void set_target_volatile( oop site, oop target);
1246
1247 static oop context(oop site);
1248
1249 // Testers
1250 static bool is_subclass(Klass* klass) {
1251 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1252 }
1253 static bool is_instance(oop obj);
1254
1255 // Accessors for code generation:
1256 static int target_offset_in_bytes() { return _target_offset; }
1257 };
1258
1259 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1260
1261 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1262 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false)
1263
1264 class DependencyContext;
1265
1266 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1267 friend class JavaClasses;
1268
1269 private:
1270 static int _vmdependencies_offset;
1271
1272 static void compute_offsets();
1273
1274 public:
1275 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1276 // Accessors
1277 static DependencyContext vmdependencies(oop context);
1278
1279 // Testers
1280 static bool is_subclass(Klass* klass) {
1281 return klass->is_subclass_of(SystemDictionary::Context_klass());
1282 }
1283 static bool is_instance(oop obj);
1284 };
1285
1286 // Interface to java.security.AccessControlContext objects
1287
1288 class java_security_AccessControlContext: AllStatic {
1289 private:
1290 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1291 // so we compute the offsets at startup rather than hard-wiring them.
1292 static int _context_offset;
1293 static int _privilegedContext_offset;
1294 static int _isPrivileged_offset;
1295 static int _isAuthorized_offset;
1296
1297 static void compute_offsets();
1298 public:
1299 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1300 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1301
1302 static bool is_authorized(Handle context);
1303
1304 // Debugging/initialization
1305 friend class JavaClasses;
1306 };
1307
1308
1309 // Interface to java.lang.ClassLoader objects
1310
1311 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1312 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1313
1314 class java_lang_ClassLoader : AllStatic {
1315 private:
1316 static int _loader_data_offset;
1317 static bool offsets_computed;
1318 static int parent_offset;
1319 static int parallelCapable_offset;
1320 static int name_offset;
1321 static int nameAndId_offset;
1322 static int unnamedModule_offset;
1323
1324 public:
1325 static void compute_offsets();
1326 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1327
1328 static ClassLoaderData* loader_data(oop loader);
1329 static ClassLoaderData* cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data);
1330
1331 static oop parent(oop loader);
1332 static oop name(oop loader);
1333 static oop nameAndId(oop loader);
1334 static bool isAncestor(oop loader, oop cl);
1335
1336 // Support for parallelCapable field
1337 static bool parallelCapable(oop the_class_mirror);
1338
1339 static bool is_trusted_loader(oop loader);
1340
1341 // Return true if this is one of the class loaders associated with
1342 // the generated bytecodes for reflection.
1343 static bool is_reflection_class_loader(oop loader);
1344
1345 // Fix for 4474172
1346 static oop non_reflection_class_loader(oop loader);
1347
1348 // Testers
1349 static bool is_subclass(Klass* klass) {
1350 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1351 }
1352 static bool is_instance(oop obj);
1353
1354 static oop unnamedModule(oop loader);
1355
1356 // Debugging
1357 friend class JavaClasses;
1358 friend class ClassFileParser; // access to number_of_fake_fields
1359 };
1360
1361
1362 // Interface to java.lang.System objects
1363
1364 class java_lang_System : AllStatic {
1365 private:
1366 static int static_in_offset;
1367 static int static_out_offset;
1368 static int static_err_offset;
1369 static int static_security_offset;
1370
1371 public:
1372 static int in_offset_in_bytes();
1373 static int out_offset_in_bytes();
1374 static int err_offset_in_bytes();
1375
1376 static bool has_security_manager();
1377
1378 static void compute_offsets();
1379 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1380
1381 // Debugging
1382 friend class JavaClasses;
1383 };
1384
1385
1386 // Interface to java.lang.StackTraceElement objects
1387
1388 class java_lang_StackTraceElement: AllStatic {
1389 private:
1390 static int declaringClassObject_offset;
1391 static int classLoaderName_offset;
1392 static int moduleName_offset;
1393 static int moduleVersion_offset;
1394 static int declaringClass_offset;
1395 static int methodName_offset;
1396 static int fileName_offset;
1397 static int lineNumber_offset;
1398
1399 // Setters
1400 static void set_classLoaderName(oop element, oop value);
1401 static void set_moduleName(oop element, oop value);
1402 static void set_moduleVersion(oop element, oop value);
1403 static void set_declaringClass(oop element, oop value);
1404 static void set_methodName(oop element, oop value);
1405 static void set_fileName(oop element, oop value);
1406 static void set_lineNumber(oop element, int value);
1407 static void set_declaringClassObject(oop element, oop value);
1408
1409 public:
1410 // Create an instance of StackTraceElement
1411 static oop create(const methodHandle& method, int bci, TRAPS);
1412
1413 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1414 int version, int bci, Symbol* name, TRAPS);
1415
1416 static void compute_offsets();
1417 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1418
1419 // Debugging
1420 friend class JavaClasses;
1421 };
1422
1423
1424 class Backtrace: AllStatic {
1425 public:
1426 // Helper backtrace functions to store bci|version together.
1427 static int merge_bci_and_version(int bci, int version);
1428 static int merge_mid_and_cpref(int mid, int cpref);
1429 static int bci_at(unsigned int merged);
1430 static int version_at(unsigned int merged);
1431 static int mid_at(unsigned int merged);
1432 static int cpref_at(unsigned int merged);
1433 static int get_line_number(const methodHandle& method, int bci);
1434 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1435
1436 // Debugging
1437 friend class JavaClasses;
1438 };
1439
1440 // Interface to java.lang.StackFrameInfo objects
1441
1442 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1443 macro(java_lang_StackFrameInfo, version, short_signature, false)
1444
1445 class java_lang_StackFrameInfo: AllStatic {
1446 private:
1447 static int _memberName_offset;
1448 static int _bci_offset;
1449 static int _version_offset;
1450
1451 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1452
1453 public:
1454 // Setters
1455 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1456 static void set_bci(oop info, int value);
1457
1458 static void set_version(oop info, short value);
1459
1460 static void compute_offsets();
1461 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1462
1463 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1464
1465 // Debugging
1466 friend class JavaClasses;
1467 };
1468
1469 class java_lang_LiveStackFrameInfo: AllStatic {
1470 private:
1471 static int _monitors_offset;
1472 static int _locals_offset;
1473 static int _operands_offset;
1474 static int _mode_offset;
1475
1476 public:
1477 static void set_monitors(oop info, oop value);
1478 static void set_locals(oop info, oop value);
1479 static void set_operands(oop info, oop value);
1480 static void set_mode(oop info, int value);
1481
1482 static void compute_offsets();
1483 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1484
1485 // Debugging
1486 friend class JavaClasses;
1487 };
1488
1489 // Interface to java.lang.AssertionStatusDirectives objects
1490
1491 class java_lang_AssertionStatusDirectives: AllStatic {
1492 private:
1493 static int classes_offset;
1494 static int classEnabled_offset;
1495 static int packages_offset;
1496 static int packageEnabled_offset;
1497 static int deflt_offset;
1498
1499 public:
1500 // Setters
1501 static void set_classes(oop obj, oop val);
1502 static void set_classEnabled(oop obj, oop val);
1503 static void set_packages(oop obj, oop val);
1504 static void set_packageEnabled(oop obj, oop val);
1505 static void set_deflt(oop obj, bool val);
1506
1507 static void compute_offsets();
1508 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1509
1510 // Debugging
1511 friend class JavaClasses;
1512 };
1513
1514
1515 class java_nio_Buffer: AllStatic {
1516 private:
1517 static int _limit_offset;
1518
1519 public:
1520 static int limit_offset();
1521 static void compute_offsets();
1522 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1523 };
1524
1525 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1526 private:
1527 static int _owner_offset;
1528 public:
1529 static void compute_offsets();
1530 static oop get_owner_threadObj(oop obj);
1531 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1532 };
1533
1534 class java_lang_Integer_IntegerCache: AllStatic {
1535 private:
1536 static int _archivedCache_offset;
1537 public:
1538 static int archivedCache_offset() { return _archivedCache_offset; }
1539 static void compute_offsets();
1540 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1541 };
1542
1543 class jdk_internal_module_ArchivedModuleGraph: AllStatic {
1544 private:
1545 static int _archivedSystemModules_offset;
1546 static int _archivedModuleFinder_offset;
1547 static int _archivedMainModule_offset;
1548 static int _archivedConfiguration_offset;
1549 public:
1550 static int archivedSystemModules_offset() { return _archivedSystemModules_offset; }
1551 static int archivedModuleFinder_offset() { return _archivedModuleFinder_offset; }
1552 static int archivedMainModule_offset() { return _archivedMainModule_offset; }
1553 static int archivedConfiguration_offset() { return _archivedConfiguration_offset; }
1554 static void compute_offsets();
1555 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1556 };
1557
1558 class java_lang_module_Configuration: AllStatic {
1559 private:
1560 static int _EMPTY_CONFIGURATION_offset;
1561 public:
1562 static int EMPTY_CONFIGURATION_offset() { return _EMPTY_CONFIGURATION_offset; }
1563 static void compute_offsets();
1564 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1565 };
1566
1567 class java_util_ImmutableCollections_ListN : AllStatic {
1568 private:
1569 static int _EMPTY_LIST_offset;
1570 public:
1571 static int EMPTY_LIST_offset() { return _EMPTY_LIST_offset; }
1572 static void compute_offsets();
1573 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1574 };
1575
1576 class java_util_ImmutableCollections_SetN : AllStatic {
1577 private:
1578 static int _EMPTY_SET_offset;
1579 public:
1580 static int EMPTY_SET_offset() { return _EMPTY_SET_offset; }
1581 static void compute_offsets();
1582 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1583 };
1584
1585 class java_util_ImmutableCollections_MapN : AllStatic {
1586 private:
1587 static int _EMPTY_MAP_offset;
1588 public:
1589 static int EMPTY_MAP_offset() { return _EMPTY_MAP_offset; }
1590 static void compute_offsets();
1591 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1592 };
1593
1594 // Use to declare fields that need to be injected into Java classes
1595 // for the JVM to use. The name_index and signature_index are
1596 // declared in vmSymbols. The may_be_java flag is used to declare
1597 // fields that might already exist in Java but should be injected if
1598 // they don't. Otherwise the field is unconditionally injected and
1599 // the JVM uses the injected one. This is to ensure that name
1600 // collisions don't occur. In general may_be_java should be false
1601 // unless there's a good reason.
1602
1603 class InjectedField {
1604 public:
1605 const SystemDictionary::WKID klass_id;
1606 const vmSymbols::SID name_index;
1607 const vmSymbols::SID signature_index;
1608 const bool may_be_java;
1609
1610
1611 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1612 Symbol* name() const { return lookup_symbol(name_index); }
1613 Symbol* signature() const { return lookup_symbol(signature_index); }
1614
1615 int compute_offset();
1616
1617 // Find the Symbol for this index
1618 static Symbol* lookup_symbol(int symbol_index) {
1619 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1620 }
1621 };
1622
1623 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1624 klass##_##name##_enum,
1625
1626 #define ALL_INJECTED_FIELDS(macro) \
1627 CLASS_INJECTED_FIELDS(macro) \
1628 CLASSLOADER_INJECTED_FIELDS(macro) \
1629 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1630 MEMBERNAME_INJECTED_FIELDS(macro) \
1631 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1632 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1633 MODULE_INJECTED_FIELDS(macro)
1634
1635 // Interface to hard-coded offset checking
1636
1637 class JavaClasses : AllStatic {
1638 private:
1639
1640 static InjectedField _injected_fields[];
1641
1642 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1643 public:
1644 enum InjectedFieldID {
1645 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1646 MAX_enum
1647 };
1648
1649 static int compute_injected_offset(InjectedFieldID id);
1650
1651 static void compute_hard_coded_offsets();
1652 static void compute_offsets();
1653 static void check_offsets() PRODUCT_RETURN;
1654 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1655 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1656 };
1657
1658 #undef DECLARE_INJECTED_FIELD_ENUM
1659
1660 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP