1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
26 #define SHARE_CLASSFILE_JAVACLASSES_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "jvmtifiles/jvmti.h"
30 #include "oops/oop.hpp"
31 #include "runtime/os.hpp"
32
33 // Interface for manipulating the basic Java classes.
34 //
35 // All dependencies on layout of actual Java classes should be kept here.
36 // If the layout of any of the classes above changes the offsets must be adjusted.
37 //
38 // For most classes we hardwire the offsets for performance reasons. In certain
39 // cases (e.g. java.security.AccessControlContext) we compute the offsets at
40 // startup since the layout here differs between JDK1.2 and JDK1.3.
41 //
42 // Note that fields (static and non-static) are arranged with oops before non-oops
43 // on a per class basis. The offsets below have to reflect this ordering.
44 //
45 // When editing the layouts please update the check_offset verification code
46 // correspondingly. The names in the enums must be identical to the actual field
47 // names in order for the verification code to work.
48
49 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
50 f(java_lang_Class) \
51 f(java_lang_String) \
52 //end
53
54 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
55 f(java_lang_System) \
56 f(java_lang_ClassLoader) \
57 f(java_lang_Throwable) \
58 f(java_lang_Thread) \
59 f(java_lang_ThreadGroup) \
60 f(java_lang_AssertionStatusDirectives) \
61 f(java_lang_ref_SoftReference) \
62 f(java_lang_invoke_MethodHandle) \
63 f(java_lang_invoke_DirectMethodHandle) \
64 f(java_lang_invoke_MemberName) \
65 f(java_lang_invoke_ResolvedMethodName) \
66 f(java_lang_invoke_LambdaForm) \
67 f(java_lang_invoke_MethodType) \
68 f(java_lang_invoke_CallSite) \
69 f(java_lang_invoke_ConstantCallSite) \
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_misc_UnsafeConstants) \
86 f(jdk_internal_vm_jni_SubElementSelector) \
87 //end
88
89 #define BASIC_JAVA_CLASSES_DO(f) \
90 BASIC_JAVA_CLASSES_DO_PART1(f) \
91 BASIC_JAVA_CLASSES_DO_PART2(f)
92
93 // Interface to java.lang.Object objects
94
95 class java_lang_Object : AllStatic {
96 public:
97 static void register_natives(TRAPS);
98 };
99
100 // Interface to java.lang.String objects
101
102 class java_lang_String : AllStatic {
103 private:
104 static int value_offset;
105 static int hash_offset;
106 static int hashIsZero_offset;
107 static int coder_offset;
108
109 static bool initialized;
110
111 static Handle basic_create(int length, bool byte_arr, TRAPS);
112
113 static inline void set_coder(oop string, jbyte coder);
114
115 public:
116
117 // Coders
118 enum Coder {
119 CODER_LATIN1 = 0,
120 CODER_UTF16 = 1
121 };
122
123 static void compute_offsets();
124 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
125
126 // Instance creation
127 static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
128 static oop create_oop_from_unicode(const jchar* unicode, int len, TRAPS);
129 static Handle create_from_str(const char* utf8_str, TRAPS);
130 static oop create_oop_from_str(const char* utf8_str, TRAPS);
131 static Handle create_from_symbol(Symbol* symbol, TRAPS);
132 static Handle create_from_platform_dependent_str(const char* str, TRAPS);
133 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
134
135 static void set_compact_strings(bool value);
136
137 static int value_offset_in_bytes() {
138 assert(initialized && (value_offset > 0), "Must be initialized");
139 return value_offset;
140 }
141 static int hash_offset_in_bytes() {
142 assert(initialized && (hash_offset > 0), "Must be initialized");
143 return hash_offset;
144 }
145 static int hashIsZero_offset_in_bytes() {
146 assert(initialized && (hashIsZero_offset > 0), "Must be initialized");
147 return hashIsZero_offset;
148 }
149 static int coder_offset_in_bytes() {
150 assert(initialized && (coder_offset > 0), "Must be initialized");
151 return coder_offset;
152 }
153
154 static inline void set_value_raw(oop string, typeArrayOop buffer);
155 static inline void set_value(oop string, typeArrayOop buffer);
156
157 // Accessors
158 static inline typeArrayOop value(oop java_string);
159 static inline typeArrayOop value_no_keepalive(oop java_string);
160 static inline bool hash_is_set(oop string);
161 static inline bool is_latin1(oop java_string);
162 static inline int length(oop java_string);
163 static inline int length(oop java_string, typeArrayOop string_value);
164 static int utf8_length(oop java_string);
165 static int utf8_length(oop java_string, typeArrayOop string_value);
166
167 // String converters
168 static char* as_utf8_string(oop java_string);
169 static char* as_utf8_string(oop java_string, char* buf, int buflen);
170 static char* as_utf8_string(oop java_string, int start, int len);
171 static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
172 static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
173 static char* as_platform_dependent_str(Handle java_string, TRAPS);
174 static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
175 // produce an ascii string with all other values quoted using \u####
176 static char* as_quoted_ascii(oop java_string);
177
178 // Compute the hash value for a java.lang.String object which would
179 // contain the characters passed in.
180 //
181 // As the hash value used by the String object itself, in
182 // String.hashCode(). This value is normally calculated in Java code
183 // in the String.hashCode method(), but is precomputed for String
184 // objects in the shared archive file.
185 // hash P(31) from Kernighan & Ritchie
186 //
187 // For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
188 static unsigned int hash_code(const jchar* s, int len) {
189 unsigned int h = 0;
190 while (len-- > 0) {
191 h = 31*h + (unsigned int) *s;
192 s++;
193 }
194 return h;
195 }
196
197 static unsigned int hash_code(const jbyte* s, int len) {
198 unsigned int h = 0;
199 while (len-- > 0) {
200 h = 31*h + (((unsigned int) *s) & 0xFF);
201 s++;
202 }
203 return h;
204 }
205
206 static unsigned int hash_code(oop java_string);
207
208 static bool equals(oop java_string, const jchar* chars, int len);
209 static bool equals(oop str1, oop str2);
210 static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
211
212 // Conversion between '.' and '/' formats
213 static Handle externalize_classname(Handle java_string, TRAPS) {
214 return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
215 }
216
217 // Conversion
218 static Symbol* as_symbol(oop java_string);
219 static Symbol* as_symbol_or_null(oop java_string);
220
221 // Testers
222 static bool is_instance(oop obj);
223 static inline bool is_instance_inlined(oop obj);
224
225 // Debugging
226 static void print(oop java_string, outputStream* st);
227 friend class JavaClasses;
228 friend class StringTable;
229 };
230
231
232 // Interface to java.lang.Class objects
233
234 #define CLASS_INJECTED_FIELDS(macro) \
235 macro(java_lang_Class, klass, intptr_signature, false) \
236 macro(java_lang_Class, array_klass, intptr_signature, false) \
237 macro(java_lang_Class, oop_size, int_signature, false) \
238 macro(java_lang_Class, static_oop_field_count, int_signature, false) \
239 macro(java_lang_Class, protection_domain, object_signature, false) \
240 macro(java_lang_Class, signers, object_signature, false) \
241 macro(java_lang_Class, source_file, object_signature, false) \
242
243 class java_lang_Class : AllStatic {
244 friend class VMStructs;
245 friend class JVMCIVMStructs;
246
247 private:
248 // The fake offsets are added by the class loader when java.lang.Class is loaded
249
250 static int _klass_offset;
251 static int _array_klass_offset;
252
253 static int _oop_size_offset;
254 static int _static_oop_field_count_offset;
255
256 static int _protection_domain_offset;
257 static int _init_lock_offset;
258 static int _signers_offset;
259 static int _class_loader_offset;
260 static int _module_offset;
261 static int _component_mirror_offset;
262 static int _name_offset;
263 static int _source_file_offset;
264 static int _inline_mirror_offset;
265 static int _indirect_mirror_offset;
266
267 static bool offsets_computed;
268 static int classRedefinedCount_offset;
269
270 static GrowableArray<Klass*>* _fixup_mirror_list;
271 static GrowableArray<Klass*>* _fixup_module_field_list;
272
273 static void set_init_lock(oop java_class, oop init_lock);
274 static void set_protection_domain(oop java_class, oop protection_domain);
275 static void set_class_loader(oop java_class, oop class_loader);
276 static void set_component_mirror(oop java_class, oop comp_mirror);
277 static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain, TRAPS);
278 static void set_mirror_module_field(Klass* K, Handle mirror, Handle module, TRAPS);
279 public:
280 static void allocate_fixup_lists();
281 static void compute_offsets();
282
283 // Instance creation
284 static void create_mirror(Klass* k, Handle class_loader, Handle module,
285 Handle protection_domain, TRAPS);
286 static void fixup_mirror(Klass* k, TRAPS);
287 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
288 static oop create_indirect_type_mirror(Klass* k, Handle mirror, TRAPS);
289 static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
290 static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
291
292 // Archiving
293 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
294 static void archive_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
295 static oop archive_mirror(Klass* k, TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
296 static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror, Thread *THREAD)
297 NOT_CDS_JAVA_HEAP_RETURN_(NULL);
298 static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
299 Handle protection_domain,
300 TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
301
302 static void fixup_module_field(Klass* k, Handle module);
303
304 // Conversion
305 static Klass* as_Klass(oop java_class);
306 static Klass* as_Klass_raw(oop java_class);
307 static void set_klass(oop java_class, Klass* klass);
308 static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
309 static Symbol* as_signature(oop java_class, bool intern_if_not_found);
310 static void print_signature(oop java_class, outputStream *st);
311 static const char* as_external_name(oop java_class);
312 // Testing
313 static bool is_instance(oop obj);
314
315 static bool is_primitive(oop java_class);
316 static BasicType primitive_type(oop java_class);
317 static oop primitive_mirror(BasicType t);
318 // JVM_NewArray support
319 static Klass* array_klass_acquire(oop java_class);
320 static void release_set_array_klass(oop java_class, Klass* klass);
321 // compiler support for class operations
322 static int klass_offset_in_bytes() { return _klass_offset; }
323 static int array_klass_offset_in_bytes() { return _array_klass_offset; }
324 static int inline_mirror_offset_in_bytes() { return _inline_mirror_offset; }
325 static int component_mirror_offset_in_bytes() { return _component_mirror_offset; }
326 // Support for classRedefinedCount field
327 static int classRedefinedCount(oop the_class_mirror);
328 static void set_classRedefinedCount(oop the_class_mirror, int value);
329
330 // Support for embedded per-class oops
331 static oop protection_domain(oop java_class);
332 static oop init_lock(oop java_class);
333 static oop component_mirror(oop java_class);
334 static objArrayOop signers(oop java_class);
335 static void set_signers(oop java_class, objArrayOop signers);
336
337 static oop class_loader(oop java_class);
338 static void set_module(oop java_class, oop module);
339 static oop module(oop java_class);
340
341 static void set_indirect_type_mirror(oop java_class, oop mirror);
342 static oop indirect_type_mirror(oop java_class);
343 static bool is_indirect_type(oop java_class) { // Must match "Class.isIndirectType()"
344 return indirect_type_mirror(java_class) == NULL || indirect_type_mirror(java_class) == java_class;
345 }
346
347 static void set_inline_type_mirror(oop java_class, oop mirror);
348 static oop inline_type_mirror(oop java_class);
349
350 static oop name(Handle java_class, TRAPS);
351
352 static oop source_file(oop java_class);
353 static void set_source_file(oop java_class, oop source_file);
354
355 static int oop_size(oop java_class);
356 static int oop_size_raw(oop java_class);
357 static void set_oop_size(HeapWord* java_class, int size);
358 static int static_oop_field_count(oop java_class);
359 static int static_oop_field_count_raw(oop java_class);
360 static void set_static_oop_field_count(oop java_class, int size);
361
362 static GrowableArray<Klass*>* fixup_mirror_list() {
363 return _fixup_mirror_list;
364 }
365 static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
366 _fixup_mirror_list = v;
367 }
368
369 static GrowableArray<Klass*>* fixup_module_field_list() {
370 return _fixup_module_field_list;
371 }
372 static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
373 _fixup_module_field_list = v;
374 }
375
376 // Debugging
377 friend class JavaClasses;
378 friend class InstanceKlass; // verification code accesses offsets
379 friend class ClassFileParser; // access to number_of_fake_fields
380 };
381
382 // Interface to java.lang.Thread objects
383
384 class java_lang_Thread : AllStatic {
385 private:
386 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
387 // so we compute the offsets at startup rather than hard-wiring them.
388 static int _name_offset;
389 static int _group_offset;
390 static int _contextClassLoader_offset;
391 static int _inheritedAccessControlContext_offset;
392 static int _priority_offset;
393 static int _eetop_offset;
394 static int _interrupted_offset;
395 static int _daemon_offset;
396 static int _stillborn_offset;
397 static int _stackSize_offset;
398 static int _tid_offset;
399 static int _thread_status_offset;
400 static int _park_blocker_offset;
401
402 static void compute_offsets();
403
404 public:
405 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
406
407 // Instance creation
408 static oop create();
409 // Returns the JavaThread associated with the thread obj
410 static JavaThread* thread(oop java_thread);
411 // Set JavaThread for instance
412 static void set_thread(oop java_thread, JavaThread* thread);
413 // Interrupted status
414 static bool interrupted(oop java_thread);
415 static void set_interrupted(oop java_thread, bool val);
416 // Name
417 static oop name(oop java_thread);
418 static void set_name(oop java_thread, oop name);
419 // Priority
420 static ThreadPriority priority(oop java_thread);
421 static void set_priority(oop java_thread, ThreadPriority priority);
422 // Thread group
423 static oop threadGroup(oop java_thread);
424 // Stillborn
425 static bool is_stillborn(oop java_thread);
426 static void set_stillborn(oop java_thread);
427 // Alive (NOTE: this is not really a field, but provides the correct
428 // definition without doing a Java call)
429 static bool is_alive(oop java_thread);
430 // Daemon
431 static bool is_daemon(oop java_thread);
432 static void set_daemon(oop java_thread);
433 // Context ClassLoader
434 static oop context_class_loader(oop java_thread);
435 // Control context
436 static oop inherited_access_control_context(oop java_thread);
437 // Stack size hint
438 static jlong stackSize(oop java_thread);
439 // Thread ID
440 static jlong thread_id(oop java_thread);
441
442 // Blocker object responsible for thread parking
443 static oop park_blocker(oop java_thread);
444
445 // Java Thread Status for JVMTI and M&M use.
446 // This thread status info is saved in threadStatus field of
447 // java.lang.Thread java class.
448 enum ThreadStatus {
449 NEW = 0,
450 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
451 JVMTI_THREAD_STATE_RUNNABLE,
452 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
453 JVMTI_THREAD_STATE_WAITING +
454 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
455 JVMTI_THREAD_STATE_SLEEPING,
456 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
457 JVMTI_THREAD_STATE_WAITING +
458 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
459 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
460 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
461 JVMTI_THREAD_STATE_WAITING +
462 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
463 JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
464 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
465 JVMTI_THREAD_STATE_WAITING +
466 JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
467 JVMTI_THREAD_STATE_PARKED,
468 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
469 JVMTI_THREAD_STATE_WAITING +
470 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
471 JVMTI_THREAD_STATE_PARKED,
472 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
473 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
474 TERMINATED = JVMTI_THREAD_STATE_TERMINATED
475 };
476 // Write thread status info to threadStatus field of java.lang.Thread.
477 static void set_thread_status(oop java_thread_oop, ThreadStatus status);
478 // Read thread status info from threadStatus field of java.lang.Thread.
479 static ThreadStatus get_thread_status(oop java_thread_oop);
480
481 static const char* thread_status_name(oop java_thread_oop);
482
483 // Debugging
484 friend class JavaClasses;
485 };
486
487 // Interface to java.lang.ThreadGroup objects
488
489 class java_lang_ThreadGroup : AllStatic {
490 private:
491 static int _parent_offset;
492 static int _name_offset;
493 static int _threads_offset;
494 static int _groups_offset;
495 static int _maxPriority_offset;
496 static int _destroyed_offset;
497 static int _daemon_offset;
498 static int _nthreads_offset;
499 static int _ngroups_offset;
500
501 static void compute_offsets();
502
503 public:
504 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
505
506 // parent ThreadGroup
507 static oop parent(oop java_thread_group);
508 // name
509 static const char* name(oop java_thread_group);
510 // ("name as oop" accessor is not necessary)
511 // Number of threads in group
512 static int nthreads(oop java_thread_group);
513 // threads
514 static objArrayOop threads(oop java_thread_group);
515 // Number of threads in group
516 static int ngroups(oop java_thread_group);
517 // groups
518 static objArrayOop groups(oop java_thread_group);
519 // maxPriority in group
520 static ThreadPriority maxPriority(oop java_thread_group);
521 // Destroyed
522 static bool is_destroyed(oop java_thread_group);
523 // Daemon
524 static bool is_daemon(oop java_thread_group);
525 // Debugging
526 friend class JavaClasses;
527 };
528
529
530
531 // Interface to java.lang.Throwable objects
532
533 class java_lang_Throwable: AllStatic {
534 friend class BacktraceBuilder;
535 friend class BacktraceIterator;
536
537 private:
538 // Offsets
539 enum {
540 hc_backtrace_offset = 0,
541 hc_detailMessage_offset = 1,
542 hc_cause_offset = 2, // New since 1.4
543 hc_stackTrace_offset = 3 // New since 1.4
544 };
545 // Trace constants
546 enum {
547 trace_methods_offset = 0,
548 trace_bcis_offset = 1,
549 trace_mirrors_offset = 2,
550 trace_names_offset = 3,
551 trace_next_offset = 4,
552 trace_hidden_offset = 5,
553 trace_size = 6,
554 trace_chunk_size = 32
555 };
556
557 static int backtrace_offset;
558 static int detailMessage_offset;
559 static int stackTrace_offset;
560 static int depth_offset;
561 static int static_unassigned_stacktrace_offset;
562
563 // StackTrace (programmatic access, new since 1.4)
564 static void clear_stacktrace(oop throwable);
565 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
566 static void set_stacktrace(oop throwable, oop st_element_array);
567 static oop unassigned_stacktrace();
568
569 public:
570 // Backtrace
571 static oop backtrace(oop throwable);
572 static void set_backtrace(oop throwable, oop value);
573 static int depth(oop throwable);
574 static void set_depth(oop throwable, int value);
575 // Needed by JVMTI to filter out this internal field.
576 static int get_backtrace_offset() { return backtrace_offset;}
577 static int get_detailMessage_offset() { return detailMessage_offset;}
578 // Message
579 static oop message(oop throwable);
580 static void set_message(oop throwable, oop value);
581 static Symbol* detail_message(oop throwable);
582 static void print_stack_element(outputStream *st, Method* method, int bci);
583 static void print_stack_usage(Handle stream);
584
585 static void compute_offsets();
586 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
587
588 // Allocate space for backtrace (created but stack trace not filled in)
589 static void allocate_backtrace(Handle throwable, TRAPS);
590 // Fill in current stack trace for throwable with preallocated backtrace (no GC)
591 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
592 // Fill in current stack trace, can cause GC
593 static void fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS);
594 static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
595 // Programmatic access to stack trace
596 static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
597 // Printing
598 static void print(oop throwable, outputStream* st);
599 static void print_stack_trace(Handle throwable, outputStream* st);
600 static void java_printStackTrace(Handle throwable, TRAPS);
601 // Debugging
602 friend class JavaClasses;
603 // Gets the method and bci of the top frame (TOS). Returns false if this failed.
604 static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
605 };
606
607
608 // Interface to java.lang.reflect.AccessibleObject objects
609
610 class java_lang_reflect_AccessibleObject: AllStatic {
611 private:
612 // Note that to reduce dependencies on the JDK we compute these
613 // offsets at run-time.
614 static int override_offset;
615
616 static void compute_offsets();
617
618 public:
619 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
620
621 // Accessors
622 static jboolean override(oop reflect);
623 static void set_override(oop reflect, jboolean value);
624
625 // Debugging
626 friend class JavaClasses;
627 };
628
629
630 // Interface to java.lang.reflect.Method objects
631
632 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
633 private:
634 // Note that to reduce dependencies on the JDK we compute these
635 // offsets at run-time.
636 static int clazz_offset;
637 static int name_offset;
638 static int returnType_offset;
639 static int parameterTypes_offset;
640 static int exceptionTypes_offset;
641 static int slot_offset;
642 static int modifiers_offset;
643 static int signature_offset;
644 static int annotations_offset;
645 static int parameter_annotations_offset;
646 static int annotation_default_offset;
647
648 static void compute_offsets();
649 public:
650 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
651
652 // Allocation
653 static Handle create(TRAPS);
654
655 // Accessors
656 static oop clazz(oop reflect);
657 static void set_clazz(oop reflect, oop value);
658
659 static void set_name(oop method, oop value);
660
661 static oop return_type(oop method);
662 static void set_return_type(oop method, oop value);
663
664 static oop parameter_types(oop method);
665 static void set_parameter_types(oop method, oop value);
666
667 static int slot(oop reflect);
668 static void set_slot(oop reflect, int value);
669
670 static void set_exception_types(oop method, oop value);
671 static void set_modifiers(oop method, int value);
672 static void set_signature(oop method, oop value);
673 static void set_annotations(oop method, oop value);
674 static void set_parameter_annotations(oop method, oop value);
675 static void set_annotation_default(oop method, oop value);
676
677 // Debugging
678 friend class JavaClasses;
679 };
680
681
682 // Interface to java.lang.reflect.Constructor objects
683
684 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
685 private:
686 // Note that to reduce dependencies on the JDK we compute these
687 // offsets at run-time.
688 static int clazz_offset;
689 static int parameterTypes_offset;
690 static int exceptionTypes_offset;
691 static int slot_offset;
692 static int modifiers_offset;
693 static int signature_offset;
694 static int annotations_offset;
695 static int parameter_annotations_offset;
696
697 static void compute_offsets();
698 public:
699 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
700
701 // Allocation
702 static Handle create(TRAPS);
703
704 // Accessors
705 static oop clazz(oop reflect);
706 static void set_clazz(oop reflect, oop value);
707
708 static oop parameter_types(oop constructor);
709 static void set_parameter_types(oop constructor, oop value);
710
711 static int slot(oop reflect);
712 static void set_slot(oop reflect, int value);
713
714 static void set_exception_types(oop constructor, oop value);
715 static void set_modifiers(oop constructor, int value);
716 static void set_signature(oop constructor, oop value);
717 static void set_annotations(oop constructor, oop value);
718 static void set_parameter_annotations(oop method, oop value);
719
720 // Debugging
721 friend class JavaClasses;
722 };
723
724
725 // Interface to java.lang.reflect.Field objects
726
727 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
728 private:
729 // Note that to reduce dependencies on the JDK we compute these
730 // offsets at run-time.
731 static int clazz_offset;
732 static int name_offset;
733 static int type_offset;
734 static int slot_offset;
735 static int modifiers_offset;
736 static int signature_offset;
737 static int annotations_offset;
738
739 static void compute_offsets();
740
741 public:
742 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
743
744 // Allocation
745 static Handle create(TRAPS);
746
747 // Accessors
748 static oop clazz(oop reflect);
749 static void set_clazz(oop reflect, oop value);
750
751 static oop name(oop field);
752 static void set_name(oop field, oop value);
753
754 static oop type(oop field);
755 static void set_type(oop field, oop value);
756
757 static int slot(oop reflect);
758 static void set_slot(oop reflect, int value);
759
760 static int modifiers(oop field);
761 static void set_modifiers(oop field, int value);
762
763 static void set_signature(oop constructor, oop value);
764 static void set_annotations(oop constructor, oop value);
765 static void set_parameter_annotations(oop method, oop value);
766 static void set_annotation_default(oop method, oop value);
767
768 // Debugging
769 friend class JavaClasses;
770 };
771
772 class java_lang_reflect_Parameter {
773 private:
774 // Note that to reduce dependencies on the JDK we compute these
775 // offsets at run-time.
776 static int name_offset;
777 static int modifiers_offset;
778 static int index_offset;
779 static int executable_offset;
780
781 static void compute_offsets();
782
783 public:
784 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
785
786 // Allocation
787 static Handle create(TRAPS);
788
789 // Accessors
790 static oop name(oop field);
791 static void set_name(oop field, oop value);
792
793 static int index(oop reflect);
794 static void set_index(oop reflect, int value);
795
796 static int modifiers(oop reflect);
797 static void set_modifiers(oop reflect, int value);
798
799 static oop executable(oop constructor);
800 static void set_executable(oop constructor, oop value);
801
802 friend class JavaClasses;
803 };
804
805 #define MODULE_INJECTED_FIELDS(macro) \
806 macro(java_lang_Module, module_entry, intptr_signature, false)
807
808 class java_lang_Module {
809 private:
810 static int loader_offset;
811 static int name_offset;
812 static int _module_entry_offset;
813 static void compute_offsets();
814
815 public:
816 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
817
818 // Allocation
819 static Handle create(Handle loader, Handle module_name, TRAPS);
820
821 // Testers
822 static bool is_instance(oop obj);
823
824 // Accessors
825 static oop loader(oop module);
826 static void set_loader(oop module, oop value);
827
828 static oop name(oop module);
829 static void set_name(oop module, oop value);
830
831 static ModuleEntry* module_entry(oop module);
832 static void set_module_entry(oop module, ModuleEntry* module_entry);
833
834 friend class JavaClasses;
835 };
836
837 // Interface to jdk.internal.reflect.ConstantPool objects
838 class reflect_ConstantPool {
839 private:
840 // Note that to reduce dependencies on the JDK we compute these
841 // offsets at run-time.
842 static int _oop_offset;
843
844 static void compute_offsets();
845
846 public:
847 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
848
849 // Allocation
850 static Handle create(TRAPS);
851
852 // Accessors
853 static void set_cp(oop reflect, ConstantPool* value);
854 static int oop_offset() {
855 return _oop_offset;
856 }
857
858 static ConstantPool* get_cp(oop reflect);
859
860 // Debugging
861 friend class JavaClasses;
862 };
863
864 // Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
865 class reflect_UnsafeStaticFieldAccessorImpl {
866 private:
867 static int _base_offset;
868 static void compute_offsets();
869
870 public:
871 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
872
873 static int base_offset() {
874 return _base_offset;
875 }
876
877 // Debugging
878 friend class JavaClasses;
879 };
880
881 // Interface to java.lang primitive type boxing objects:
882 // - java.lang.Boolean
883 // - java.lang.Character
884 // - java.lang.Float
885 // - java.lang.Double
886 // - java.lang.Byte
887 // - java.lang.Short
888 // - java.lang.Integer
889 // - java.lang.Long
890
891 // This could be separated out into 8 individual classes.
892
893 class java_lang_boxing_object: AllStatic {
894 private:
895 enum {
896 hc_value_offset = 0
897 };
898 static int value_offset;
899 static int long_value_offset;
900
901 static oop initialize_and_allocate(BasicType type, TRAPS);
902 public:
903 // Allocation. Returns a boxed value, or NULL for invalid type.
904 static oop create(BasicType type, jvalue* value, TRAPS);
905 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
906 static BasicType get_value(oop box, jvalue* value);
907 static BasicType set_value(oop box, jvalue* value);
908 static BasicType basic_type(oop box);
909 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
910 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
911 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
912 static void print(BasicType type, jvalue* value, outputStream* st);
913
914 static int value_offset_in_bytes(BasicType type) {
915 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
916 value_offset;
917 }
918
919 // Debugging
920 friend class JavaClasses;
921 };
922
923
924
925 // Interface to java.lang.ref.Reference objects
926
927 class java_lang_ref_Reference: AllStatic {
928 public:
929 enum {
930 hc_referent_offset = 0,
931 hc_queue_offset = 1,
932 hc_next_offset = 2,
933 hc_discovered_offset = 3 // Is not last, see SoftRefs.
934 };
935
936 static int referent_offset;
937 static int queue_offset;
938 static int next_offset;
939 static int discovered_offset;
940
941 // Accessors
942 static inline oop referent(oop ref);
943 static inline void set_referent(oop ref, oop value);
944 static inline void set_referent_raw(oop ref, oop value);
945 static inline HeapWord* referent_addr_raw(oop ref);
946 static inline oop next(oop ref);
947 static inline void set_next(oop ref, oop value);
948 static inline void set_next_raw(oop ref, oop value);
949 static inline HeapWord* next_addr_raw(oop ref);
950 static inline oop discovered(oop ref);
951 static inline void set_discovered(oop ref, oop value);
952 static inline void set_discovered_raw(oop ref, oop value);
953 static inline HeapWord* discovered_addr_raw(oop ref);
954 static inline oop queue(oop ref);
955 static inline void set_queue(oop ref, oop value);
956 static bool is_referent_field(oop obj, ptrdiff_t offset);
957 static inline bool is_final(oop ref);
958 static inline bool is_phantom(oop ref);
959 };
960
961
962 // Interface to java.lang.ref.SoftReference objects
963
964 class java_lang_ref_SoftReference: public java_lang_ref_Reference {
965 public:
966 static int timestamp_offset;
967 static int static_clock_offset;
968
969 // Accessors
970 static jlong timestamp(oop ref);
971
972 // Accessors for statics
973 static jlong clock();
974 static void set_clock(jlong value);
975
976 static void compute_offsets();
977 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
978 };
979
980 // Interface to java.lang.invoke.MethodHandle objects
981
982 class MethodHandleEntry;
983
984 class java_lang_invoke_MethodHandle: AllStatic {
985 friend class JavaClasses;
986
987 private:
988 static int _type_offset; // the MethodType of this MH
989 static int _form_offset; // the LambdaForm of this MH
990
991 static void compute_offsets();
992
993 public:
994 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
995
996 // Accessors
997 static oop type(oop mh);
998 static void set_type(oop mh, oop mtype);
999
1000 static oop form(oop mh);
1001 static void set_form(oop mh, oop lform);
1002
1003 // Testers
1004 static bool is_subclass(Klass* klass) {
1005 return klass->is_subclass_of(SystemDictionary::MethodHandle_klass());
1006 }
1007 static bool is_instance(oop obj);
1008
1009 // Accessors for code generation:
1010 static int type_offset_in_bytes() { return _type_offset; }
1011 static int form_offset_in_bytes() { return _form_offset; }
1012 };
1013
1014 // Interface to java.lang.invoke.DirectMethodHandle objects
1015
1016 class java_lang_invoke_DirectMethodHandle: AllStatic {
1017 friend class JavaClasses;
1018
1019 private:
1020 static int _member_offset; // the MemberName of this DMH
1021
1022 static void compute_offsets();
1023
1024 public:
1025 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1026
1027 // Accessors
1028 static oop member(oop mh);
1029
1030 // Testers
1031 static bool is_subclass(Klass* klass) {
1032 return klass->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
1033 }
1034 static bool is_instance(oop obj);
1035
1036 // Accessors for code generation:
1037 static int member_offset_in_bytes() { return _member_offset; }
1038 };
1039
1040 // Interface to java.lang.invoke.LambdaForm objects
1041 // (These are a private interface for managing adapter code generation.)
1042
1043 class java_lang_invoke_LambdaForm: AllStatic {
1044 friend class JavaClasses;
1045
1046 private:
1047 static int _vmentry_offset; // type is MemberName
1048
1049 static void compute_offsets();
1050
1051 public:
1052 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1053
1054 // Accessors
1055 static oop vmentry(oop lform);
1056 static void set_vmentry(oop lform, oop invoker);
1057
1058 // Testers
1059 static bool is_subclass(Klass* klass) {
1060 return SystemDictionary::LambdaForm_klass() != NULL &&
1061 klass->is_subclass_of(SystemDictionary::LambdaForm_klass());
1062 }
1063 static bool is_instance(oop obj);
1064
1065 // Accessors for code generation:
1066 static int vmentry_offset_in_bytes() { return _vmentry_offset; }
1067 };
1068
1069
1070 // Interface to java.lang.invoke.MemberName objects
1071 // (These are a private interface for Java code to query the class hierarchy.)
1072
1073 #define RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1074 macro(java_lang_invoke_ResolvedMethodName, vmholder, object_signature, false) \
1075 macro(java_lang_invoke_ResolvedMethodName, vmtarget, intptr_signature, false)
1076
1077 class java_lang_invoke_ResolvedMethodName : AllStatic {
1078 friend class JavaClasses;
1079
1080 static int _vmtarget_offset;
1081 static int _vmholder_offset;
1082
1083 static void compute_offsets();
1084 public:
1085 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1086
1087 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
1088
1089 static Method* vmtarget(oop resolved_method);
1090 static void set_vmtarget(oop resolved_method, Method* method);
1091
1092 static void set_vmholder(oop resolved_method, oop holder);
1093
1094 // find or create resolved member name
1095 static oop find_resolved_method(const methodHandle& m, TRAPS);
1096
1097 static bool is_instance(oop resolved_method);
1098 };
1099
1100
1101 #define MEMBERNAME_INJECTED_FIELDS(macro) \
1102 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false)
1103
1104
1105 class java_lang_invoke_MemberName: AllStatic {
1106 friend class JavaClasses;
1107
1108 private:
1109 // From java.lang.invoke.MemberName:
1110 // private Class<?> clazz; // class in which the method is defined
1111 // private String name; // may be null if not yet materialized
1112 // private Object type; // may be null if not yet materialized
1113 // private int flags; // modifier bits; see reflect.Modifier
1114 // private ResolvedMethodName method; // holds VM-specific target value
1115 // private intptr_t vmindex; // member index within class or interface
1116 static int _clazz_offset;
1117 static int _name_offset;
1118 static int _type_offset;
1119 static int _flags_offset;
1120 static int _method_offset;
1121 static int _vmindex_offset;
1122
1123 static void compute_offsets();
1124
1125 public:
1126 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1127 // Accessors
1128 static oop clazz(oop mname);
1129 static void set_clazz(oop mname, oop clazz);
1130
1131 static oop type(oop mname);
1132 static void set_type(oop mname, oop type);
1133
1134 static oop name(oop mname);
1135 static void set_name(oop mname, oop name);
1136
1137 static int flags(oop mname);
1138 static void set_flags(oop mname, int flags);
1139
1140 // Link through ResolvedMethodName field to get Method*
1141 static Method* vmtarget(oop mname);
1142 static void set_method(oop mname, oop method);
1143
1144 static intptr_t vmindex(oop mname);
1145 static void set_vmindex(oop mname, intptr_t index);
1146
1147 // Testers
1148 static bool is_subclass(Klass* klass) {
1149 return klass->is_subclass_of(SystemDictionary::MemberName_klass());
1150 }
1151 static bool is_instance(oop obj);
1152
1153 static bool is_method(oop obj);
1154
1155 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
1156 enum {
1157 MN_IS_METHOD = 0x00010000, // method (not object constructor)
1158 MN_IS_OBJECT_CONSTRUCTOR = 0x00020000, // object constructor
1159 MN_IS_FIELD = 0x00040000, // field
1160 MN_IS_TYPE = 0x00080000, // nested type
1161 MN_CALLER_SENSITIVE = 0x00100000, // @CallerSensitive annotation detected
1162 MN_REFERENCE_KIND_SHIFT = 24, // refKind
1163 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT,
1164 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers:
1165 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes
1166 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces
1167 };
1168
1169 // Accessors for code generation:
1170 static int clazz_offset_in_bytes() { return _clazz_offset; }
1171 static int type_offset_in_bytes() { return _type_offset; }
1172 static int name_offset_in_bytes() { return _name_offset; }
1173 static int flags_offset_in_bytes() { return _flags_offset; }
1174 static int method_offset_in_bytes() { return _method_offset; }
1175 static int vmindex_offset_in_bytes() { return _vmindex_offset; }
1176 };
1177
1178
1179 // Interface to java.lang.invoke.MethodType objects
1180
1181 class java_lang_invoke_MethodType: AllStatic {
1182 friend class JavaClasses;
1183
1184 private:
1185 static int _rtype_offset;
1186 static int _ptypes_offset;
1187
1188 static void compute_offsets();
1189
1190 public:
1191 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1192 // Accessors
1193 static oop rtype(oop mt);
1194 static objArrayOop ptypes(oop mt);
1195
1196 static oop ptype(oop mt, int index);
1197 static int ptype_count(oop mt);
1198
1199 static int ptype_slot_count(oop mt); // extra counts for long/double
1200 static int rtype_slot_count(oop mt); // extra counts for long/double
1201
1202 static Symbol* as_signature(oop mt, bool intern_if_not_found);
1203 static void print_signature(oop mt, outputStream* st);
1204
1205 static bool is_instance(oop obj);
1206
1207 static bool equals(oop mt1, oop mt2);
1208
1209 // Accessors for code generation:
1210 static int rtype_offset_in_bytes() { return _rtype_offset; }
1211 static int ptypes_offset_in_bytes() { return _ptypes_offset; }
1212 };
1213
1214
1215 // Interface to java.lang.invoke.CallSite objects
1216
1217 class java_lang_invoke_CallSite: AllStatic {
1218 friend class JavaClasses;
1219
1220 private:
1221 static int _target_offset;
1222 static int _context_offset;
1223
1224 static void compute_offsets();
1225
1226 public:
1227 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1228 // Accessors
1229 static oop target( oop site);
1230 static void set_target( oop site, oop target);
1231 static void set_target_volatile( oop site, oop target);
1232
1233 static oop context_no_keepalive(oop site);
1234
1235 // Testers
1236 static bool is_subclass(Klass* klass) {
1237 return klass->is_subclass_of(SystemDictionary::CallSite_klass());
1238 }
1239 static bool is_instance(oop obj);
1240
1241 // Accessors for code generation:
1242 static int target_offset_in_bytes() { return _target_offset; }
1243 };
1244
1245 // Interface to java.lang.invoke.ConstantCallSite objects
1246
1247 class java_lang_invoke_ConstantCallSite: AllStatic {
1248 friend class JavaClasses;
1249
1250 private:
1251 static int _is_frozen_offset;
1252
1253 static void compute_offsets();
1254
1255 public:
1256 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1257 // Accessors
1258 static jboolean is_frozen(oop site);
1259
1260 // Testers
1261 static bool is_subclass(Klass* klass) {
1262 return klass->is_subclass_of(SystemDictionary::ConstantCallSite_klass());
1263 }
1264 static bool is_instance(oop obj);
1265 };
1266
1267 // Interface to java.lang.invoke.MethodHandleNatives$CallSiteContext objects
1268
1269 #define CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1270 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, vmdependencies, intptr_signature, false) \
1271 macro(java_lang_invoke_MethodHandleNatives_CallSiteContext, last_cleanup, long_signature, false)
1272
1273 class DependencyContext;
1274
1275 class java_lang_invoke_MethodHandleNatives_CallSiteContext : AllStatic {
1276 friend class JavaClasses;
1277
1278 private:
1279 static int _vmdependencies_offset;
1280 static int _last_cleanup_offset;
1281
1282 static void compute_offsets();
1283
1284 public:
1285 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1286 // Accessors
1287 static DependencyContext vmdependencies(oop context);
1288
1289 // Testers
1290 static bool is_subclass(Klass* klass) {
1291 return klass->is_subclass_of(SystemDictionary::Context_klass());
1292 }
1293 static bool is_instance(oop obj);
1294 };
1295
1296 // Interface to java.security.AccessControlContext objects
1297
1298 class java_security_AccessControlContext: AllStatic {
1299 private:
1300 // Note that for this class the layout changed between JDK1.2 and JDK1.3,
1301 // so we compute the offsets at startup rather than hard-wiring them.
1302 static int _context_offset;
1303 static int _privilegedContext_offset;
1304 static int _isPrivileged_offset;
1305 static int _isAuthorized_offset;
1306
1307 static void compute_offsets();
1308 public:
1309 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1310 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
1311
1312 // Debugging/initialization
1313 friend class JavaClasses;
1314 };
1315
1316
1317 // Interface to java.lang.ClassLoader objects
1318
1319 #define CLASSLOADER_INJECTED_FIELDS(macro) \
1320 macro(java_lang_ClassLoader, loader_data, intptr_signature, false)
1321
1322 class java_lang_ClassLoader : AllStatic {
1323 private:
1324 static int _loader_data_offset;
1325 static bool offsets_computed;
1326 static int parent_offset;
1327 static int parallelCapable_offset;
1328 static int name_offset;
1329 static int nameAndId_offset;
1330 static int unnamedModule_offset;
1331
1332 public:
1333 static void compute_offsets();
1334 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1335
1336 static ClassLoaderData* loader_data_acquire(oop loader);
1337 static ClassLoaderData* loader_data_raw(oop loader);
1338 static void release_set_loader_data(oop loader, ClassLoaderData* new_data);
1339
1340 static oop parent(oop loader);
1341 static oop name(oop loader);
1342 static oop nameAndId(oop loader);
1343 static bool isAncestor(oop loader, oop cl);
1344
1345 // Support for parallelCapable field
1346 static bool parallelCapable(oop the_class_mirror);
1347
1348 static bool is_trusted_loader(oop loader);
1349
1350 // Return true if this is one of the class loaders associated with
1351 // the generated bytecodes for reflection.
1352 static bool is_reflection_class_loader(oop loader);
1353
1354 // Fix for 4474172
1355 static oop non_reflection_class_loader(oop loader);
1356
1357 // Testers
1358 static bool is_subclass(Klass* klass) {
1359 return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1360 }
1361 static bool is_instance(oop obj);
1362
1363 static oop unnamedModule(oop loader);
1364
1365 // Debugging
1366 friend class JavaClasses;
1367 friend class ClassFileParser; // access to number_of_fake_fields
1368 };
1369
1370
1371 // Interface to java.lang.System objects
1372
1373 class java_lang_System : AllStatic {
1374 private:
1375 static int static_in_offset;
1376 static int static_out_offset;
1377 static int static_err_offset;
1378 static int static_security_offset;
1379
1380 public:
1381 static int in_offset_in_bytes();
1382 static int out_offset_in_bytes();
1383 static int err_offset_in_bytes();
1384
1385 static void compute_offsets();
1386 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1387
1388 // Debugging
1389 friend class JavaClasses;
1390 };
1391
1392
1393 // Interface to java.lang.StackTraceElement objects
1394
1395 class java_lang_StackTraceElement: AllStatic {
1396 private:
1397 static int declaringClassObject_offset;
1398 static int classLoaderName_offset;
1399 static int moduleName_offset;
1400 static int moduleVersion_offset;
1401 static int declaringClass_offset;
1402 static int methodName_offset;
1403 static int fileName_offset;
1404 static int lineNumber_offset;
1405
1406 // Setters
1407 static void set_classLoaderName(oop element, oop value);
1408 static void set_moduleName(oop element, oop value);
1409 static void set_moduleVersion(oop element, oop value);
1410 static void set_declaringClass(oop element, oop value);
1411 static void set_methodName(oop element, oop value);
1412 static void set_fileName(oop element, oop value);
1413 static void set_lineNumber(oop element, int value);
1414 static void set_declaringClassObject(oop element, oop value);
1415
1416 public:
1417 // Create an instance of StackTraceElement
1418 static oop create(const methodHandle& method, int bci, TRAPS);
1419
1420 static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
1421 int version, int bci, Symbol* name, TRAPS);
1422
1423 static void compute_offsets();
1424 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1425
1426 #if INCLUDE_JVMCI
1427 static void decode(Handle mirror, int method, int version, int bci, int cpref, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1428 static void decode(Handle mirror, methodHandle method, int bci, Symbol*& methodName, Symbol*& fileName, int& lineNumber);
1429 #endif
1430
1431 // Debugging
1432 friend class JavaClasses;
1433 };
1434
1435
1436 class Backtrace: AllStatic {
1437 public:
1438 // Helper backtrace functions to store bci|version together.
1439 static int merge_bci_and_version(int bci, int version);
1440 static int merge_mid_and_cpref(int mid, int cpref);
1441 static int bci_at(unsigned int merged);
1442 static int version_at(unsigned int merged);
1443 static int mid_at(unsigned int merged);
1444 static int cpref_at(unsigned int merged);
1445 static int get_line_number(Method* method, int bci);
1446 static Symbol* get_source_file_name(InstanceKlass* holder, int version);
1447
1448 // Debugging
1449 friend class JavaClasses;
1450 };
1451
1452 // Interface to java.lang.StackFrameInfo objects
1453
1454 #define STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1455 macro(java_lang_StackFrameInfo, version, short_signature, false)
1456
1457 class java_lang_StackFrameInfo: AllStatic {
1458 private:
1459 static int _memberName_offset;
1460 static int _bci_offset;
1461 static int _version_offset;
1462
1463 static Method* get_method(Handle stackFrame, InstanceKlass* holder, TRAPS);
1464
1465 public:
1466 // Setters
1467 static void set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS);
1468 static void set_bci(oop info, int value);
1469
1470 static void set_version(oop info, short value);
1471
1472 static void compute_offsets();
1473 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1474
1475 static void to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS);
1476
1477 // Debugging
1478 friend class JavaClasses;
1479 };
1480
1481 class java_lang_LiveStackFrameInfo: AllStatic {
1482 private:
1483 static int _monitors_offset;
1484 static int _locals_offset;
1485 static int _operands_offset;
1486 static int _mode_offset;
1487
1488 public:
1489 static void set_monitors(oop info, oop value);
1490 static void set_locals(oop info, oop value);
1491 static void set_operands(oop info, oop value);
1492 static void set_mode(oop info, int value);
1493
1494 static void compute_offsets();
1495 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1496
1497 // Debugging
1498 friend class JavaClasses;
1499 };
1500
1501 // Interface to java.lang.AssertionStatusDirectives objects
1502
1503 class java_lang_AssertionStatusDirectives: AllStatic {
1504 private:
1505 static int classes_offset;
1506 static int classEnabled_offset;
1507 static int packages_offset;
1508 static int packageEnabled_offset;
1509 static int deflt_offset;
1510
1511 public:
1512 // Setters
1513 static void set_classes(oop obj, oop val);
1514 static void set_classEnabled(oop obj, oop val);
1515 static void set_packages(oop obj, oop val);
1516 static void set_packageEnabled(oop obj, oop val);
1517 static void set_deflt(oop obj, bool val);
1518
1519 static void compute_offsets();
1520 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1521
1522 // Debugging
1523 friend class JavaClasses;
1524 };
1525
1526
1527 class java_nio_Buffer: AllStatic {
1528 private:
1529 static int _limit_offset;
1530
1531 public:
1532 static int limit_offset();
1533 static void compute_offsets();
1534 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1535 };
1536
1537 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
1538 private:
1539 static int _owner_offset;
1540 public:
1541 static void compute_offsets();
1542 static oop get_owner_threadObj(oop obj);
1543 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1544 };
1545
1546 // Interface to jdk.internal.misc.UnsafeConsants
1547
1548 class jdk_internal_misc_UnsafeConstants : AllStatic {
1549 public:
1550 static void set_unsafe_constants();
1551 static void compute_offsets() { }
1552 static void serialize_offsets(SerializeClosure* f) { }
1553 };
1554
1555 class java_lang_Integer : AllStatic {
1556 public:
1557 static jint value(oop obj);
1558 };
1559
1560 class java_lang_Long : AllStatic {
1561 public:
1562 static jlong value(oop obj);
1563 };
1564
1565 class java_lang_Character : AllStatic {
1566 public:
1567 static jchar value(oop obj);
1568 };
1569
1570 class java_lang_Short : AllStatic {
1571 public:
1572 static jshort value(oop obj);
1573 };
1574
1575 class java_lang_Byte : AllStatic {
1576 public:
1577 static jbyte value(oop obj);
1578 };
1579
1580 class java_lang_Boolean : AllStatic {
1581 private:
1582 static int _static_TRUE_offset;
1583 static int _static_FALSE_offset;
1584 public:
1585 static Symbol* symbol();
1586 static void compute_offsets(InstanceKlass* k);
1587 static oop get_TRUE(InstanceKlass *k);
1588 static oop get_FALSE(InstanceKlass *k);
1589 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1590 static jboolean value(oop obj);
1591 };
1592
1593 class java_lang_Integer_IntegerCache : AllStatic {
1594 private:
1595 static int _static_cache_offset;
1596 public:
1597 static Symbol* symbol();
1598 static void compute_offsets(InstanceKlass* k);
1599 static objArrayOop cache(InstanceKlass *k);
1600 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1601 };
1602
1603 class java_lang_Long_LongCache : AllStatic {
1604 private:
1605 static int _static_cache_offset;
1606 public:
1607 static Symbol* symbol();
1608 static void compute_offsets(InstanceKlass* k);
1609 static objArrayOop cache(InstanceKlass *k);
1610 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1611 };
1612
1613 class java_lang_Character_CharacterCache : AllStatic {
1614 private:
1615 static int _static_cache_offset;
1616 public:
1617 static Symbol* symbol();
1618 static void compute_offsets(InstanceKlass* k);
1619 static objArrayOop cache(InstanceKlass *k);
1620 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1621 };
1622
1623 class java_lang_Short_ShortCache : AllStatic {
1624 private:
1625 static int _static_cache_offset;
1626 public:
1627 static Symbol* symbol();
1628 static void compute_offsets(InstanceKlass* k);
1629 static objArrayOop cache(InstanceKlass *k);
1630 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1631 };
1632
1633 class java_lang_Byte_ByteCache : AllStatic {
1634 private:
1635 static int _static_cache_offset;
1636 public:
1637 static Symbol* symbol();
1638 static void compute_offsets(InstanceKlass* k);
1639 static objArrayOop cache(InstanceKlass *k);
1640 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1641 };
1642
1643 class jdk_internal_vm_jni_SubElementSelector : AllStatic {
1644 private:
1645 static int _arrayElementType_offset;
1646 static int _subElementType_offset;
1647 static int _offset_offset;
1648 static int _isFlattened_offset;
1649 static int _isFlattenable_offset;
1650 public:
1651 static Symbol* symbol();
1652 static void compute_offsets();
1653 static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
1654
1655 static oop getArrayElementType(oop obj);
1656 static void setArrayElementType(oop obj, oop type);
1657 static oop getSubElementType(oop obj);
1658 static void setSubElementType(oop obj, oop type);
1659 static int getOffset(oop obj);
1660 static void setOffset(oop obj, int offset);
1661 static bool getIsFlattened(oop obj);
1662 static void setIsFlattened(oop obj, bool b);
1663 static bool getIsFlattenable(oop obj);
1664 static void setIsFlattenable(oop obj, bool b);
1665 };
1666
1667 // Use to declare fields that need to be injected into Java classes
1668 // for the JVM to use. The name_index and signature_index are
1669 // declared in vmSymbols. The may_be_java flag is used to declare
1670 // fields that might already exist in Java but should be injected if
1671 // they don't. Otherwise the field is unconditionally injected and
1672 // the JVM uses the injected one. This is to ensure that name
1673 // collisions don't occur. In general may_be_java should be false
1674 // unless there's a good reason.
1675
1676 class InjectedField {
1677 public:
1678 const SystemDictionary::WKID klass_id;
1679 const vmSymbols::SID name_index;
1680 const vmSymbols::SID signature_index;
1681 const bool may_be_java;
1682
1683
1684 Klass* klass() const { return SystemDictionary::well_known_klass(klass_id); }
1685 Symbol* name() const { return lookup_symbol(name_index); }
1686 Symbol* signature() const { return lookup_symbol(signature_index); }
1687
1688 int compute_offset();
1689
1690 // Find the Symbol for this index
1691 static Symbol* lookup_symbol(int symbol_index) {
1692 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
1693 }
1694 };
1695
1696 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \
1697 klass##_##name##_enum,
1698
1699 #define ALL_INJECTED_FIELDS(macro) \
1700 CLASS_INJECTED_FIELDS(macro) \
1701 CLASSLOADER_INJECTED_FIELDS(macro) \
1702 RESOLVEDMETHOD_INJECTED_FIELDS(macro) \
1703 MEMBERNAME_INJECTED_FIELDS(macro) \
1704 CALLSITECONTEXT_INJECTED_FIELDS(macro) \
1705 STACKFRAMEINFO_INJECTED_FIELDS(macro) \
1706 MODULE_INJECTED_FIELDS(macro)
1707
1708 // Interface to hard-coded offset checking
1709
1710 class JavaClasses : AllStatic {
1711 private:
1712
1713 static InjectedField _injected_fields[];
1714
1715 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
1716 public:
1717 enum InjectedFieldID {
1718 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
1719 MAX_enum
1720 };
1721
1722 static int compute_injected_offset(InjectedFieldID id);
1723
1724 static void compute_hard_coded_offsets();
1725 static void compute_offsets();
1726 static void check_offsets() PRODUCT_RETURN;
1727 static void serialize_offsets(SerializeClosure* soc) NOT_CDS_RETURN;
1728 static InjectedField* get_injected(Symbol* class_name, int* field_count);
1729 static bool is_supported_for_archiving(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(false);
1730 };
1731
1732 #undef DECLARE_INJECTED_FIELD_ENUM
1733
1734 #endif // SHARE_CLASSFILE_JAVACLASSES_HPP