1 /*
2 * Copyright (c) 1997, 2021, 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 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "cds/archiveBuilder.hpp"
28 #include "cds/heapShared.inline.hpp"
29 #include "cds/metaspaceShared.hpp"
30 #include "classfile/altHashing.hpp"
31 #include "classfile/classLoaderData.inline.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/javaThreadStatus.hpp"
34 #include "classfile/moduleEntry.hpp"
35 #include "classfile/stringTable.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmClasses.hpp"
39 #include "classfile/vmSymbols.hpp"
40 #include "code/debugInfo.hpp"
41 #include "code/dependencyContext.hpp"
42 #include "code/pcDesc.hpp"
43 #include "gc/shared/collectedHeap.inline.hpp"
44 #include "interpreter/interpreter.hpp"
45 #include "interpreter/linkResolver.hpp"
46 #include "logging/log.hpp"
47 #include "logging/logStream.hpp"
48 #include "memory/oopFactory.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "memory/universe.hpp"
51 #include "oops/fieldStreams.inline.hpp"
52 #include "oops/flatArrayKlass.hpp"
53 #include "oops/inlineKlass.inline.hpp"
54 #include "oops/instanceKlass.inline.hpp"
55 #include "oops/instanceMirrorKlass.inline.hpp"
56 #include "oops/klass.hpp"
57 #include "oops/klass.inline.hpp"
58 #include "oops/method.inline.hpp"
59 #include "oops/objArrayOop.inline.hpp"
60 #include "oops/oop.inline.hpp"
61 #include "oops/symbol.hpp"
62 #include "oops/recordComponent.hpp"
63 #include "oops/typeArrayOop.inline.hpp"
64 #include "prims/jvmtiExport.hpp"
65 #include "prims/methodHandles.hpp"
66 #include "prims/resolvedMethodTable.hpp"
67 #include "runtime/fieldDescriptor.inline.hpp"
68 #include "runtime/frame.inline.hpp"
69 #include "runtime/handles.inline.hpp"
70 #include "runtime/init.hpp"
71 #include "runtime/interfaceSupport.inline.hpp"
72 #include "runtime/java.hpp"
73 #include "runtime/javaCalls.hpp"
74 #include "runtime/jniHandles.inline.hpp"
75 #include "runtime/reflectionUtils.hpp"
76 #include "runtime/safepoint.hpp"
77 #include "runtime/safepointVerifiers.hpp"
78 #include "runtime/thread.inline.hpp"
79 #include "runtime/vframe.inline.hpp"
80 #include "runtime/vm_version.hpp"
81 #include "utilities/align.hpp"
82 #include "utilities/preserveException.hpp"
83 #include "utilities/utf8.hpp"
84 #if INCLUDE_JVMCI
85 #include "jvmci/jvmciJavaClasses.hpp"
86 #endif
87
88 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
89 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
90
91 #if INCLUDE_CDS
92 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
93 f->do_u4((u4*)&_##name##_offset);
94 #endif
95
96 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
97 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
98
99 InjectedField JavaClasses::_injected_fields[] = {
100 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
101 };
102
103 // Register native methods of Object
104 void java_lang_Object::register_natives(TRAPS) {
105 InstanceKlass* obj = vmClasses::Object_klass();
106 Method::register_native(obj, vmSymbols::hashCode_name(),
107 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
108 Method::register_native(obj, vmSymbols::wait_name(),
109 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
110 Method::register_native(obj, vmSymbols::notify_name(),
111 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
112 Method::register_native(obj, vmSymbols::notifyAll_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
114 Method::register_native(obj, vmSymbols::clone_name(),
115 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
116 }
117
118 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
119 return _injected_fields[id].compute_offset();
120 }
121
122 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
123 *field_count = 0;
124
125 vmSymbolID sid = vmSymbols::find_sid(class_name);
126 if (sid == vmSymbolID::NO_SID) {
127 // Only well known classes can inject fields
128 return NULL;
129 }
130
131 int count = 0;
132 int start = -1;
133
134 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
135 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
136 count++; \
137 if (start == -1) start = klass##_##name##_enum; \
138 }
139 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
140 #undef LOOKUP_INJECTED_FIELD
141
142 if (start != -1) {
143 *field_count = count;
144 return _injected_fields + start;
145 }
146 return NULL;
147 }
148
149
150 // Helpful routine for computing field offsets at run time rather than hardcoding them
151 // Finds local fields only, including static fields. Static field offsets are from the
152 // beginning of the mirror.
153 static void compute_offset(int &dest_offset,
154 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
155 bool is_static = false) {
156 fieldDescriptor fd;
157 if (ik == NULL) {
158 ResourceMark rm;
159 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
160 vm_exit_during_initialization("Invalid layout of well-known class");
161 }
162
163 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
164 ResourceMark rm;
165 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
166 name_symbol->as_C_string(), signature_symbol->as_C_string());
167 #ifndef PRODUCT
168 // Prints all fields and offsets
169 Log(class) lt;
170 LogStream ls(lt.error());
171 ik->print_on(&ls);
172 #endif //PRODUCT
173 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
174 }
175 dest_offset = fd.offset();
176 }
177
178 // Overloading to pass name as a string.
179 static void compute_offset(int& dest_offset, InstanceKlass* ik,
180 const char* name_string, Symbol* signature_symbol,
181 bool is_static = false) {
182 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
183 if (name == NULL) {
184 ResourceMark rm;
185 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
186 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
187 }
188 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
189 }
190
191
192 #if INCLUDE_CDS
193 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
194 f->do_u4((u4*)&offset)
195 #endif
196
197 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
198 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
199
200
201 // java_lang_String
202
203 int java_lang_String::_value_offset;
204 int java_lang_String::_hash_offset;
205 int java_lang_String::_hashIsZero_offset;
206 int java_lang_String::_coder_offset;
207 int java_lang_String::_flags_offset;
208
209 bool java_lang_String::_initialized;
210
211
212 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
213 uint8_t* addr = flags_addr(java_string);
214 uint8_t value = Atomic::load(addr);
215 while ((value & flag_mask) == 0) {
216 uint8_t old_value = value;
217 value |= flag_mask;
218 value = Atomic::cmpxchg(addr, old_value, value);
219 if (value == old_value) return false; // Flag bit changed from 0 to 1.
220 }
221 return true; // Flag bit is already 1.
222 }
223
224 #define STRING_FIELDS_DO(macro) \
225 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
226 macro(_hash_offset, k, "hash", int_signature, false); \
227 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
228 macro(_coder_offset, k, "coder", byte_signature, false);
229
230 void java_lang_String::compute_offsets() {
231 if (_initialized) {
232 return;
233 }
234
235 InstanceKlass* k = vmClasses::String_klass();
236 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
237 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
238
239 _initialized = true;
240 }
241
242 #if INCLUDE_CDS
243 void java_lang_String::serialize_offsets(SerializeClosure* f) {
244 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
245 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
246 f->do_bool(&_initialized);
247 }
248 #endif
249
250 class CompactStringsFixup : public FieldClosure {
251 private:
252 bool _value;
253
254 public:
255 CompactStringsFixup(bool value) : _value(value) {}
256
257 void do_field(fieldDescriptor* fd) {
258 if (fd->name() == vmSymbols::compact_strings_name()) {
259 oop mirror = fd->field_holder()->java_mirror();
260 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
261 assert(mirror != NULL, "String must have mirror already");
262 mirror->bool_field_put(fd->offset(), _value);
263 }
264 }
265 };
266
267 void java_lang_String::set_compact_strings(bool value) {
268 CompactStringsFixup fix(value);
269 vmClasses::String_klass()->do_local_static_fields(&fix);
270 }
271
272 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
273 assert(_initialized, "Must be initialized");
274 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
275
276 // Create the String object first, so there's a chance that the String
277 // and the char array it points to end up in the same cache line.
278 oop obj;
279 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
280
281 // Create the char array. The String object must be handlized here
282 // because GC can happen as a result of the allocation attempt.
283 Handle h_obj(THREAD, obj);
284 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
285 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
286
287 // Point the String at the char array
288 obj = h_obj();
289 set_value(obj, buffer);
290 // No need to zero the offset, allocation zero'ed the entire String object
291 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
292 return h_obj;
293 }
294
295 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
296 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
297 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
298 typeArrayOop buffer = value(h_obj());
299 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
300 if (is_latin1) {
301 for (int index = 0; index < length; index++) {
302 buffer->byte_at_put(index, (jbyte)unicode[index]);
303 }
304 } else {
305 for (int index = 0; index < length; index++) {
306 buffer->char_at_put(index, unicode[index]);
307 }
308 }
309
310 #ifdef ASSERT
311 {
312 ResourceMark rm;
313 char* expected = UNICODE::as_utf8(unicode, length);
314 char* actual = as_utf8_string(h_obj());
315 if (strcmp(expected, actual) != 0) {
316 fatal("Unicode conversion failure: %s --> %s", expected, actual);
317 }
318 }
319 #endif
320
321 return h_obj;
322 }
323
324 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
325 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
326 return h_obj();
327 }
328
329 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
330 if (utf8_str == NULL) {
331 return Handle();
332 }
333 bool has_multibyte, is_latin1;
334 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
335 if (!CompactStrings) {
336 has_multibyte = true;
337 is_latin1 = false;
338 }
339
340 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
341 if (length > 0) {
342 if (!has_multibyte) {
343 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
344 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
345 } else if (is_latin1) {
346 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
347 } else {
348 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
349 }
350 }
351
352 #ifdef ASSERT
353 // This check is too strict when the input string is not a valid UTF8.
354 // For example, it may be created with arbitrary content via jni_NewStringUTF.
355 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
356 ResourceMark rm;
357 const char* expected = utf8_str;
358 char* actual = as_utf8_string(h_obj());
359 if (strcmp(expected, actual) != 0) {
360 fatal("String conversion failure: %s --> %s", expected, actual);
361 }
362 }
363 #endif
364
365 return h_obj;
366 }
367
368 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
369 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
370 return h_obj();
371 }
372
373 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
374 const char* utf8_str = (char*)symbol->bytes();
375 int utf8_len = symbol->utf8_length();
376
377 bool has_multibyte, is_latin1;
378 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
379 if (!CompactStrings) {
380 has_multibyte = true;
381 is_latin1 = false;
382 }
383
384 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
385 if (length > 0) {
386 if (!has_multibyte) {
387 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
388 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
389 } else if (is_latin1) {
390 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
391 } else {
392 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
393 }
394 }
395
396 #ifdef ASSERT
397 {
398 ResourceMark rm;
399 const char* expected = symbol->as_utf8();
400 char* actual = as_utf8_string(h_obj());
401 if (strncmp(expected, actual, utf8_len) != 0) {
402 fatal("Symbol conversion failure: %s --> %s", expected, actual);
403 }
404 }
405 #endif
406
407 return h_obj;
408 }
409
410 // Converts a C string to a Java String based on current encoding
411 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
412 assert(str != NULL, "bad arguments");
413
414 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
415 static to_java_string_fn_t _to_java_string_fn = NULL;
416
417 if (_to_java_string_fn == NULL) {
418 void *lib_handle = os::native_java_library();
419 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
420 #if defined(_WIN32) && !defined(_WIN64)
421 if (_to_java_string_fn == NULL) {
422 // On 32 bit Windows, also try __stdcall decorated name
423 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
424 }
425 #endif
426 if (_to_java_string_fn == NULL) {
427 fatal("JNU_NewStringPlatform missing");
428 }
429 }
430
431 jstring js = NULL;
432 {
433 JavaThread* thread = THREAD;
434 HandleMark hm(thread);
435 ThreadToNativeFromVM ttn(thread);
436 js = (_to_java_string_fn)(thread->jni_environment(), str);
437 }
438
439 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
440 JNIHandles::destroy_local(js); // destroy local JNIHandle.
441 return native_platform_string;
442 }
443
444 // Converts a Java String to a native C string that can be used for
445 // native OS calls.
446 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
447 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
448 static to_platform_string_fn_t _to_platform_string_fn = NULL;
449
450 if (_to_platform_string_fn == NULL) {
451 void *lib_handle = os::native_java_library();
452 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
453 if (_to_platform_string_fn == NULL) {
454 fatal("GetStringPlatformChars missing");
455 }
456 }
457
458 char *native_platform_string;
459 { JavaThread* thread = THREAD;
460 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
461 bool is_copy;
462 HandleMark hm(thread);
463 ThreadToNativeFromVM ttn(thread);
464 JNIEnv *env = thread->jni_environment();
465 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
466 assert(is_copy == JNI_TRUE, "is_copy value changed");
467 JNIHandles::destroy_local(js);
468 }
469 return native_platform_string;
470 }
471
472 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
473 ResourceMark rm(THREAD);
474 return create_from_str(java_name->as_klass_external_name(), THREAD);
475 }
476
477 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
478 jchar* result = as_unicode_string_or_null(java_string, length);
479 if (result == NULL) {
480 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
481 }
482 return result;
483 }
484
485 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
486 typeArrayOop value = java_lang_String::value(java_string);
487 length = java_lang_String::length(java_string, value);
488 bool is_latin1 = java_lang_String::is_latin1(java_string);
489
490 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
491 if (result != NULL) {
492 if (!is_latin1) {
493 for (int index = 0; index < length; index++) {
494 result[index] = value->char_at(index);
495 }
496 } else {
497 for (int index = 0; index < length; index++) {
498 result[index] = ((jchar) value->byte_at(index)) & 0xff;
499 }
500 }
501 }
502 return result;
503 }
504
505 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
506 // The hash and hashIsZero fields are subject to a benign data race,
507 // making it crucial to ensure that any observable result of the
508 // calculation in this method stays correct under any possible read of
509 // these fields. Necessary restrictions to allow this to be correct
510 // without explicit memory fences or similar concurrency primitives is
511 // that we can ever only write to one of these two fields for a given
512 // String instance, and that the computation is idempotent and derived
513 // from immutable state
514 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
515 if (java_lang_String::hash_is_set(java_string)) {
516 return java_string->int_field(_hash_offset);
517 }
518
519 typeArrayOop value = java_lang_String::value(java_string);
520 int length = java_lang_String::length(java_string, value);
521 bool is_latin1 = java_lang_String::is_latin1(java_string);
522
523 unsigned int hash = 0;
524 if (length > 0) {
525 if (is_latin1) {
526 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
527 } else {
528 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
529 }
530 }
531
532 if (update) {
533 if (hash != 0) {
534 java_string->int_field_put(_hash_offset, hash);
535 } else {
536 java_string->bool_field_put(_hashIsZero_offset, true);
537 }
538 }
539 return hash;
540 }
541
542 unsigned int java_lang_String::hash_code(oop java_string) {
543 return hash_code_impl(java_string, /*update=*/true);
544 }
545
546 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
547 return hash_code_impl(java_string, /*update=*/false);
548 }
549
550
551 char* java_lang_String::as_quoted_ascii(oop java_string) {
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 if (length == 0) return NULL;
557
558 char* result;
559 int result_length;
560 if (!is_latin1) {
561 jchar* base = value->char_at_addr(0);
562 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
563 result = NEW_RESOURCE_ARRAY(char, result_length);
564 UNICODE::as_quoted_ascii(base, length, result, result_length);
565 } else {
566 jbyte* base = value->byte_at_addr(0);
567 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
568 result = NEW_RESOURCE_ARRAY(char, result_length);
569 UNICODE::as_quoted_ascii(base, length, result, result_length);
570 }
571 assert(result_length >= length + 1, "must not be shorter");
572 assert(result_length == (int)strlen(result) + 1, "must match");
573 return result;
574 }
575
576 Symbol* java_lang_String::as_symbol(oop java_string) {
577 typeArrayOop value = java_lang_String::value(java_string);
578 int length = java_lang_String::length(java_string, value);
579 bool is_latin1 = java_lang_String::is_latin1(java_string);
580 if (!is_latin1) {
581 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
582 Symbol* sym = SymbolTable::new_symbol(base, length);
583 return sym;
584 } else {
585 ResourceMark rm;
586 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
587 const char* base = UNICODE::as_utf8(position, length);
588 Symbol* sym = SymbolTable::new_symbol(base, length);
589 return sym;
590 }
591 }
592
593 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
594 typeArrayOop value = java_lang_String::value(java_string);
595 int length = java_lang_String::length(java_string, value);
596 bool is_latin1 = java_lang_String::is_latin1(java_string);
597 if (!is_latin1) {
598 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
599 return SymbolTable::probe_unicode(base, length);
600 } else {
601 ResourceMark rm;
602 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
603 const char* base = UNICODE::as_utf8(position, length);
604 return SymbolTable::probe(base, length);
605 }
606 }
607
608 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
609 assert(value_equals(value, java_lang_String::value(java_string)),
610 "value must be same as java_lang_String::value(java_string)");
611 int length = java_lang_String::length(java_string, value);
612 if (length == 0) {
613 return 0;
614 }
615 if (!java_lang_String::is_latin1(java_string)) {
616 return UNICODE::utf8_length(value->char_at_addr(0), length);
617 } else {
618 return UNICODE::utf8_length(value->byte_at_addr(0), length);
619 }
620 }
621
622 int java_lang_String::utf8_length(oop java_string) {
623 typeArrayOop value = java_lang_String::value(java_string);
624 return utf8_length(java_string, value);
625 }
626
627 char* java_lang_String::as_utf8_string(oop java_string) {
628 int length;
629 return as_utf8_string(java_string, length);
630 }
631
632 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
633 typeArrayOop value = java_lang_String::value(java_string);
634 length = java_lang_String::length(java_string, value);
635 bool is_latin1 = java_lang_String::is_latin1(java_string);
636 if (!is_latin1) {
637 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
638 return UNICODE::as_utf8(position, length);
639 } else {
640 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
641 return UNICODE::as_utf8(position, length);
642 }
643 }
644
645 // Uses a provided buffer if it's sufficiently large, otherwise allocates
646 // a resource array to fit
647 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
648 typeArrayOop value = java_lang_String::value(java_string);
649 int len = java_lang_String::length(java_string, value);
650 bool is_latin1 = java_lang_String::is_latin1(java_string);
651 if (!is_latin1) {
652 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
653 utf8_len = UNICODE::utf8_length(position, len);
654 if (utf8_len >= buflen) {
655 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
656 }
657 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
658 } else {
659 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
660 utf8_len = UNICODE::utf8_length(position, len);
661 if (utf8_len >= buflen) {
662 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
663 }
664 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
665 }
666 }
667
668 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
669 assert(value_equals(value, java_lang_String::value(java_string)),
670 "value must be same as java_lang_String::value(java_string)");
671 int length = java_lang_String::length(java_string, value);
672 bool is_latin1 = java_lang_String::is_latin1(java_string);
673 if (!is_latin1) {
674 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
675 return UNICODE::as_utf8(position, length, buf, buflen);
676 } else {
677 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
678 return UNICODE::as_utf8(position, length, buf, buflen);
679 }
680 }
681
682 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
683 typeArrayOop value = java_lang_String::value(java_string);
684 return as_utf8_string(java_string, value, buf, buflen);
685 }
686
687 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
688 typeArrayOop value = java_lang_String::value(java_string);
689 bool is_latin1 = java_lang_String::is_latin1(java_string);
690 assert(start + len <= java_lang_String::length(java_string), "just checking");
691 if (!is_latin1) {
692 jchar* position = value->char_at_addr(start);
693 return UNICODE::as_utf8(position, len);
694 } else {
695 jbyte* position = value->byte_at_addr(start);
696 return UNICODE::as_utf8(position, len);
697 }
698 }
699
700 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
701 assert(value_equals(value, java_lang_String::value(java_string)),
702 "value must be same as java_lang_String::value(java_string)");
703 assert(start + len <= java_lang_String::length(java_string), "just checking");
704 bool is_latin1 = java_lang_String::is_latin1(java_string);
705 if (!is_latin1) {
706 jchar* position = value->char_at_addr(start);
707 return UNICODE::as_utf8(position, len, buf, buflen);
708 } else {
709 jbyte* position = value->byte_at_addr(start);
710 return UNICODE::as_utf8(position, len, buf, buflen);
711 }
712 }
713
714 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
715 assert(java_string->klass() == vmClasses::String_klass(),
716 "must be java_string");
717 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
718 int length = java_lang_String::length(java_string, value);
719 if (length != len) {
720 return false;
721 }
722 bool is_latin1 = java_lang_String::is_latin1(java_string);
723 if (!is_latin1) {
724 for (int i = 0; i < len; i++) {
725 if (value->char_at(i) != chars[i]) {
726 return false;
727 }
728 }
729 } else {
730 for (int i = 0; i < len; i++) {
731 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
732 return false;
733 }
734 }
735 }
736 return true;
737 }
738
739 bool java_lang_String::equals(oop str1, oop str2) {
740 assert(str1->klass() == vmClasses::String_klass(),
741 "must be java String");
742 assert(str2->klass() == vmClasses::String_klass(),
743 "must be java String");
744 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
745 bool is_latin1 = java_lang_String::is_latin1(str1);
746 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
747 bool is_latin2 = java_lang_String::is_latin1(str2);
748
749 if (is_latin1 != is_latin2) {
750 // Strings with different coders are never equal.
751 return false;
752 }
753 return value_equals(value1, value2);
754 }
755
756 void java_lang_String::print(oop java_string, outputStream* st) {
757 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
758 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
759
760 if (value == NULL) {
761 // This can happen if, e.g., printing a String
762 // object before its initializer has been called
763 st->print("NULL");
764 return;
765 }
766
767 int length = java_lang_String::length(java_string, value);
768 bool is_latin1 = java_lang_String::is_latin1(java_string);
769
770 st->print("\"");
771 for (int index = 0; index < length; index++) {
772 st->print("%c", (!is_latin1) ? value->char_at(index) :
773 ((jchar) value->byte_at(index)) & 0xff );
774 }
775 st->print("\"");
776 }
777
778 // java_lang_Class
779
780 int java_lang_Class::_klass_offset;
781 int java_lang_Class::_array_klass_offset;
782 int java_lang_Class::_oop_size_offset;
783 int java_lang_Class::_static_oop_field_count_offset;
784 int java_lang_Class::_class_loader_offset;
785 int java_lang_Class::_module_offset;
786 int java_lang_Class::_protection_domain_offset;
787 int java_lang_Class::_component_mirror_offset;
788 int java_lang_Class::_primary_mirror_offset;
789 int java_lang_Class::_secondary_mirror_offset;
790 int java_lang_Class::_init_lock_offset;
791 int java_lang_Class::_signers_offset;
792 int java_lang_Class::_name_offset;
793 int java_lang_Class::_source_file_offset;
794 int java_lang_Class::_classData_offset;
795 int java_lang_Class::_classRedefinedCount_offset;
796
797 bool java_lang_Class::_offsets_computed = false;
798 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
799 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
800
801 #ifdef ASSERT
802 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
803 assert(fd->has_initial_value(), "caller should have checked this");
804 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
805 // Can't use vmSymbols::string_signature() as fd->signature() may have been relocated
806 // during DumpSharedSpaces
807 assert(fd->signature()->equals("Ljava/lang/String;"), "just checking");
808 }
809 #endif
810
811 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
812 DEBUG_ONLY(assert_valid_static_string_field(fd);)
813 oop string = fd->string_initial_value(CHECK);
814 mirror()->obj_field_put(fd->offset(), string);
815 }
816
817 #if INCLUDE_CDS_JAVA_HEAP
818 static void initialize_static_string_field_for_dump(fieldDescriptor* fd, Handle mirror) {
819 DEBUG_ONLY(assert_valid_static_string_field(fd);)
820 assert(DumpSharedSpaces, "must be");
821 assert(HeapShared::is_archived_object_during_dumptime(mirror()), "must be");
822 // Archive the String field and update the pointer.
823 oop s = mirror()->obj_field(fd->offset());
824 oop archived_s = StringTable::create_archived_string(s);
825 mirror()->obj_field_put(fd->offset(), archived_s);
826 }
827 #endif
828
829 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
830 assert(fd->has_initial_value(), "caller should have checked this");
831 BasicType t = fd->field_type();
832 switch (t) {
833 case T_BYTE:
834 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
835 break;
836 case T_BOOLEAN:
837 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
838 break;
839 case T_CHAR:
840 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
841 break;
842 case T_SHORT:
843 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
844 break;
845 case T_INT:
846 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
847 break;
848 case T_FLOAT:
849 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
850 break;
851 case T_DOUBLE:
852 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
853 break;
854 case T_LONG:
855 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
856 break;
857 default:
858 // Illegal ConstantValue attribute in class file should have been
859 // caught during classfile parsing.
860 ShouldNotReachHere();
861 }
862 }
863
864 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
865 assert(mirror.not_null() && fd->is_static(), "just checking");
866 if (fd->has_initial_value()) {
867 if (fd->field_type() != T_OBJECT) {
868 initialize_static_primitive_field(fd, mirror);
869 } else {
870 initialize_static_string_field(fd, mirror, CHECK);
871 }
872 }
873 }
874
875 #if INCLUDE_CDS_JAVA_HEAP
876 static void initialize_static_field_for_dump(fieldDescriptor* fd, Handle mirror) {
877 assert(mirror.not_null() && fd->is_static(), "just checking");
878 if (fd->has_initial_value()) {
879 if (fd->field_type() != T_OBJECT) {
880 initialize_static_primitive_field(fd, mirror);
881 } else {
882 initialize_static_string_field_for_dump(fd, mirror);
883 }
884 }
885 }
886 #endif
887
888 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
889 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
890
891 // If the offset was read from the shared archive, it was fixed up already
892 if (!k->is_shared()) {
893 if (k->is_instance_klass()) {
894 // During bootstrap, java.lang.Class wasn't loaded so static field
895 // offsets were computed without the size added it. Go back and
896 // update all the static field offsets to included the size.
897 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
898 if (fs.access_flags().is_static()) {
899 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
900 fs.set_offset(real_offset);
901 }
902 }
903 }
904 }
905
906 if (k->is_shared() && k->has_archived_mirror_index()) {
907 if (HeapShared::are_archived_mirrors_available()) {
908 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
909 assert(present, "Missing archived mirror for %s", k->external_name());
910 return;
911 } else {
912 k->clear_java_mirror_handle();
913 k->clear_archived_mirror_index();
914 }
915 }
916 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
917 }
918
919 void java_lang_Class::initialize_mirror_fields(Klass* k,
920 Handle mirror,
921 Handle protection_domain,
922 Handle classData,
923 TRAPS) {
924 // Allocate a simple java object for a lock.
925 // This needs to be a java object because during class initialization
926 // it can be held across a java call.
927 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
928 set_init_lock(mirror(), r);
929
930 // Set protection domain also
931 set_protection_domain(mirror(), protection_domain());
932
933 // Initialize static fields
934 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
935
936 // Set classData
937 set_class_data(mirror(), classData());
938 }
939
940 // Set the java.lang.Module module field in the java_lang_Class mirror
941 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
942 if (module.is_null()) {
943 // During startup, the module may be NULL only if java.base has not been defined yet.
944 // Put the class on the fixup_module_list to patch later when the java.lang.Module
945 // for java.base is known. But note that since we captured the NULL module another
946 // thread may have completed that initialization.
947
948 bool javabase_was_defined = false;
949 {
950 MutexLocker m1(current, Module_lock);
951 // Keep list of classes needing java.base module fixup
952 if (!ModuleEntryTable::javabase_defined()) {
953 assert(k->java_mirror() != NULL, "Class's mirror is null");
954 k->class_loader_data()->inc_keep_alive();
955 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
956 fixup_module_field_list()->push(k);
957 } else {
958 javabase_was_defined = true;
959 }
960 }
961
962 // If java.base was already defined then patch this particular class with java.base.
963 if (javabase_was_defined) {
964 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
965 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
966 "Setting class module field, " JAVA_BASE_NAME " should be defined");
967 Handle javabase_handle(current, javabase_entry->module());
968 set_module(mirror(), javabase_handle());
969 }
970 } else {
971 assert(Universe::is_module_initialized() ||
972 (ModuleEntryTable::javabase_defined() &&
973 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
974 "Incorrect java.lang.Module specification while creating mirror");
975 set_module(mirror(), module());
976 }
977 }
978
979 // Statically allocate fixup lists because they always get created.
980 void java_lang_Class::allocate_fixup_lists() {
981 GrowableArray<Klass*>* mirror_list =
982 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
983 set_fixup_mirror_list(mirror_list);
984
985 GrowableArray<Klass*>* module_list =
986 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
987 set_fixup_module_field_list(module_list);
988 }
989
990 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
991 Handle module, Handle protection_domain,
992 Handle classData, TRAPS) {
993 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
994 assert(k->java_mirror() == NULL, "should only assign mirror once");
995
996 // Use this moment of initialization to cache modifier_flags also,
997 // to support Class.getModifiers(). Instance classes recalculate
998 // the cached flags after the class file is parsed, but before the
999 // class is put into the system dictionary.
1000 int computed_modifiers = k->compute_modifier_flags();
1001 k->set_modifier_flags(computed_modifiers);
1002 // Class_klass has to be loaded because it is used to allocate
1003 // the mirror.
1004 if (vmClasses::Class_klass_loaded()) {
1005 // Allocate mirror (java.lang.Class instance)
1006 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1007 Handle mirror(THREAD, mirror_oop);
1008 Handle comp_mirror;
1009
1010 // Setup indirection from mirror->klass
1011 java_lang_Class::set_klass(mirror(), k);
1012
1013 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1014 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1015
1016 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1017
1018 // It might also have a component mirror. This mirror must already exist.
1019 if (k->is_array_klass()) {
1020 if (k->is_flatArray_klass()) {
1021 Klass* element_klass = (Klass*) FlatArrayKlass::cast(k)->element_klass();
1022 assert(element_klass->is_inline_klass(), "Must be inline type component");
1023 InlineKlass* vk = InlineKlass::cast(element_klass);
1024 comp_mirror = Handle(THREAD, vk->val_mirror());
1025 } else if (k->is_typeArray_klass()) {
1026 BasicType type = TypeArrayKlass::cast(k)->element_type();
1027 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1028 } else {
1029 assert(k->is_objArray_klass(), "Must be");
1030 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1031 assert(element_klass != NULL, "Must have an element klass");
1032 oop comp_oop = element_klass->java_mirror();
1033 if (element_klass->is_inline_klass()) {
1034 InlineKlass* ik = InlineKlass::cast(element_klass);
1035 comp_oop = k->name()->is_Q_array_signature() ? ik->val_mirror() : ik->ref_mirror();
1036 }
1037 comp_mirror = Handle(THREAD, comp_oop);
1038 }
1039 assert(comp_mirror() != NULL, "must have a mirror");
1040
1041 // Two-way link between the array klass and its component mirror:
1042 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1043 set_component_mirror(mirror(), comp_mirror());
1044 // See below for ordering dependencies between field array_klass in component mirror
1045 // and java_mirror in this klass.
1046 } else {
1047 assert(k->is_instance_klass(), "Must be");
1048
1049 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1050 if (HAS_PENDING_EXCEPTION) {
1051 // If any of the fields throws an exception like OOM remove the klass field
1052 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1053 // This mirror looks like a primitive type, which logically it is because it
1054 // it represents no class.
1055 java_lang_Class::set_klass(mirror(), NULL);
1056 return;
1057 }
1058 }
1059
1060 // set the classLoader field in the java_lang_Class instance
1061 assert(class_loader() == k->class_loader(), "should be same");
1062 set_class_loader(mirror(), class_loader());
1063
1064 // Setup indirection from klass->mirror
1065 // after any exceptions can happen during allocations.
1066 k->set_java_mirror(mirror);
1067
1068 // Set the module field in the java_lang_Class instance. This must be done
1069 // after the mirror is set.
1070 set_mirror_module_field(THREAD, k, mirror, module);
1071
1072 if (comp_mirror() != NULL) {
1073 // Set after k->java_mirror() is published, because compiled code running
1074 // concurrently doesn't expect a k to have a null java_mirror.
1075 release_set_array_klass(comp_mirror(), k);
1076 }
1077
1078 if (k->is_inline_klass()) {
1079 oop secondary_mirror = create_secondary_mirror(k, mirror, CHECK);
1080 set_primary_mirror(mirror(), mirror());
1081 set_secondary_mirror(mirror(), secondary_mirror);
1082 }
1083 } else {
1084 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1085 fixup_mirror_list()->push(k);
1086 }
1087 }
1088 // Create the secondary mirror for inline class. Sets all the fields of this java.lang.Class
1089 // instance with the same value as the primary mirror
1090 oop java_lang_Class::create_secondary_mirror(Klass* k, Handle mirror, TRAPS) {
1091 assert(k->is_inline_klass(), "primitive class");
1092 // Allocate mirror (java.lang.Class instance)
1093 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK_0);
1094 Handle secondary_mirror(THREAD, mirror_oop);
1095
1096 java_lang_Class::set_klass(secondary_mirror(), k);
1097 java_lang_Class::set_static_oop_field_count(secondary_mirror(), static_oop_field_count(mirror()));
1098 // ## do we need to set init lock?
1099 java_lang_Class::set_init_lock(secondary_mirror(), init_lock(mirror()));
1100
1101 set_protection_domain(secondary_mirror(), protection_domain(mirror()));
1102 set_class_loader(secondary_mirror(), class_loader(mirror()));
1103 // ## handle if java.base is not yet defined
1104 set_module(secondary_mirror(), module(mirror()));
1105 set_primary_mirror(secondary_mirror(), mirror());
1106 set_secondary_mirror(secondary_mirror(), secondary_mirror());
1107 return secondary_mirror();
1108 }
1109
1110 #if INCLUDE_CDS_JAVA_HEAP
1111 // Clears mirror fields. Static final fields with initial values are reloaded
1112 // from constant pool. The object identity hash is in the object header and is
1113 // not affected.
1114 class ResetMirrorField: public FieldClosure {
1115 private:
1116 Handle _m;
1117
1118 public:
1119 ResetMirrorField(Handle mirror) : _m(mirror) {}
1120
1121 void do_field(fieldDescriptor* fd) {
1122 assert(DumpSharedSpaces, "dump time only");
1123 assert(_m.not_null(), "Mirror cannot be NULL");
1124
1125 if (fd->is_static() && fd->has_initial_value()) {
1126 initialize_static_field_for_dump(fd, _m);
1127 return;
1128 }
1129
1130 BasicType ft = fd->field_type();
1131 switch (ft) {
1132 case T_BYTE:
1133 _m()->byte_field_put(fd->offset(), 0);
1134 break;
1135 case T_CHAR:
1136 _m()->char_field_put(fd->offset(), 0);
1137 break;
1138 case T_DOUBLE:
1139 _m()->double_field_put(fd->offset(), 0);
1140 break;
1141 case T_FLOAT:
1142 _m()->float_field_put(fd->offset(), 0);
1143 break;
1144 case T_INT:
1145 _m()->int_field_put(fd->offset(), 0);
1146 break;
1147 case T_LONG:
1148 _m()->long_field_put(fd->offset(), 0);
1149 break;
1150 case T_SHORT:
1151 _m()->short_field_put(fd->offset(), 0);
1152 break;
1153 case T_BOOLEAN:
1154 _m()->bool_field_put(fd->offset(), false);
1155 break;
1156 case T_INLINE_TYPE:
1157 case T_ARRAY:
1158 case T_OBJECT: {
1159 // It might be useful to cache the String field, but
1160 // for now just clear out any reference field
1161 oop o = _m()->obj_field(fd->offset());
1162 _m()->obj_field_put(fd->offset(), NULL);
1163 break;
1164 }
1165 default:
1166 ShouldNotReachHere();
1167 break;
1168 }
1169 }
1170 };
1171
1172 static void set_klass_field_in_archived_mirror(oop mirror_obj, int offset, Klass* k) {
1173 assert(java_lang_Class::is_instance(mirror_obj), "must be");
1174 // this is the copy of k in the output buffer
1175 Klass* copy = ArchiveBuilder::get_relocated_klass(k);
1176
1177 // This is the address of k, if the archive is loaded at the requested location
1178 Klass* def = ArchiveBuilder::current()->to_requested(copy);
1179
1180 log_debug(cds, heap, mirror)(
1181 "Relocate mirror metadata field at %d from " PTR_FORMAT " ==> " PTR_FORMAT,
1182 offset, p2i(k), p2i(def));
1183
1184 mirror_obj->metadata_field_put(offset, def);
1185 }
1186
1187 void java_lang_Class::archive_basic_type_mirrors() {
1188 assert(HeapShared::can_write(), "must be");
1189
1190 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1191 BasicType bt = (BasicType)t;
1192 oop m = Universe::_mirrors[t].resolve();
1193 if (m != NULL) {
1194 // Update the field at _array_klass_offset to point to the relocated array klass.
1195 oop archived_m = HeapShared::archive_object(m);
1196 assert(archived_m != NULL, "sanity");
1197 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1198 assert(ak != NULL || t == T_VOID, "should not be NULL");
1199 if (ak != NULL) {
1200 set_klass_field_in_archived_mirror(archived_m, _array_klass_offset, ak);
1201 }
1202
1203 // Clear the fields. Just to be safe
1204 Klass *k = m->klass();
1205 Handle archived_mirror_h(Thread::current(), archived_m);
1206 ResetMirrorField reset(archived_mirror_h);
1207 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1208
1209 log_trace(cds, heap, mirror)(
1210 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1211 type2name(bt), p2i(m), p2i(archived_m));
1212
1213 Universe::replace_mirror(bt, archived_m);
1214 }
1215 }
1216 }
1217 //
1218 // After the mirror object is successfully archived, the archived
1219 // klass is set with _has_archived_raw_mirror flag.
1220 //
1221 // The _has_archived_raw_mirror flag is cleared at runtime when the
1222 // archived mirror is restored. If archived java heap data cannot
1223 // be used at runtime, new mirror object is created for the shared
1224 // class. The _has_archived_raw_mirror is cleared also during the process.
1225 oop java_lang_Class::archive_mirror(Klass* k) {
1226 assert(HeapShared::can_write(), "must be");
1227
1228 // Mirror is already archived
1229 if (k->has_archived_mirror_index()) {
1230 assert(k->archived_java_mirror() != NULL, "no archived mirror");
1231 return k->archived_java_mirror();
1232 }
1233
1234 // No mirror
1235 oop mirror = k->java_mirror();
1236 if (mirror == NULL) {
1237 return NULL;
1238 }
1239
1240 if (k->is_instance_klass()) {
1241 InstanceKlass *ik = InstanceKlass::cast(k);
1242 assert(ik->signers() == NULL, "class with signer should have been excluded");
1243
1244 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1245 ik->is_shared_app_class())) {
1246 // Archiving mirror for classes from non-builtin loaders is not
1247 // supported.
1248 return NULL;
1249 }
1250 }
1251
1252 if (k->is_inline_klass()) {
1253 // Inline types have a primary mirror and a secondary mirror. Don't handle this for now. TODO:CDS
1254 k->clear_java_mirror_handle();
1255 return NULL;
1256 }
1257
1258 // Now start archiving the mirror object
1259 oop archived_mirror = HeapShared::archive_object(mirror);
1260 if (archived_mirror == NULL) {
1261 return NULL;
1262 }
1263
1264 archived_mirror = process_archived_mirror(k, mirror, archived_mirror);
1265 if (archived_mirror == NULL) {
1266 return NULL;
1267 }
1268
1269 k->set_archived_java_mirror(archived_mirror);
1270
1271 ResourceMark rm;
1272 log_trace(cds, heap, mirror)(
1273 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1274 k->external_name(), p2i(mirror), p2i(archived_mirror));
1275
1276 return archived_mirror;
1277 }
1278
1279 // The process is based on create_mirror().
1280 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1281 oop archived_mirror) {
1282 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1283 // to archived metadata and objects below.
1284 Klass *c = archived_mirror->klass();
1285 Handle archived_mirror_h(Thread::current(), archived_mirror);
1286 ResetMirrorField reset(archived_mirror_h);
1287 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1288
1289 if (k->is_array_klass()) {
1290 oop archived_comp_mirror;
1291 if (k->is_typeArray_klass()) {
1292 // The primitive type mirrors are already archived. Get the archived mirror.
1293 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1294 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1295 assert(archived_comp_mirror != NULL, "Must be");
1296 } else {
1297 assert(k->is_objArray_klass(), "Must be");
1298 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1299 assert(element_klass != NULL, "Must have an element klass");
1300 archived_comp_mirror = archive_mirror(element_klass);
1301 if (archived_comp_mirror == NULL) {
1302 return NULL;
1303 }
1304 }
1305 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1306 } else {
1307 assert(k->is_instance_klass(), "Must be");
1308
1309 // Reset local static fields in the mirror
1310 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1311
1312 java_lang_Class:set_init_lock(archived_mirror, NULL);
1313
1314 set_protection_domain(archived_mirror, NULL);
1315 set_signers(archived_mirror, NULL);
1316 set_source_file(archived_mirror, NULL);
1317 }
1318
1319 // clear class loader and mirror_module_field
1320 set_class_loader(archived_mirror, NULL);
1321 set_module(archived_mirror, NULL);
1322
1323 // The archived mirror's field at _klass_offset is still pointing to the original
1324 // klass. Updated the field in the archived mirror to point to the relocated
1325 // klass in the archive.
1326 set_klass_field_in_archived_mirror(archived_mirror, _klass_offset, as_Klass(mirror));
1327
1328 // The field at _array_klass_offset is pointing to the original one dimension
1329 // higher array klass if exists. Relocate the pointer.
1330 Klass *arr = array_klass_acquire(mirror);
1331 if (arr != NULL) {
1332 set_klass_field_in_archived_mirror(archived_mirror, _array_klass_offset, arr);
1333 }
1334 return archived_mirror;
1335 }
1336
1337 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1338 if (MetaspaceShared::relocation_delta() != 0) {
1339 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1340
1341 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1342 if (ak != NULL) {
1343 archived_mirror->metadata_field_put(_array_klass_offset,
1344 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1345 }
1346 }
1347 }
1348
1349 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1350 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1351
1352 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1353 archived_mirror->metadata_field_put(_klass_offset,
1354 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1355
1356 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1357 if (ak != NULL) {
1358 archived_mirror->metadata_field_put(_array_klass_offset,
1359 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1360 }
1361 }
1362
1363
1364 // Returns true if the mirror is updated, false if no archived mirror
1365 // data is present. After the archived mirror object is restored, the
1366 // shared klass' _has_raw_archived_mirror flag is cleared.
1367 bool java_lang_Class::restore_archived_mirror(Klass *k,
1368 Handle class_loader, Handle module,
1369 Handle protection_domain, TRAPS) {
1370 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1371 // see more details in vmClasses::resolve_all().
1372 if (!vmClasses::Class_klass_loaded()) {
1373 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1374 fixup_mirror_list()->push(k);
1375 return true;
1376 }
1377
1378 oop m = k->archived_java_mirror();
1379 assert(m != NULL, "must have stored non-null archived mirror");
1380
1381 // Sanity: clear it now to prevent re-initialization if any of the following fails
1382 k->clear_archived_mirror_index();
1383
1384 // mirror is archived, restore
1385 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1386 if (HeapShared::is_mapped()) {
1387 assert(Universe::heap()->is_archived_object(m), "must be archived mirror object");
1388 }
1389 assert(as_Klass(m) == k, "must be");
1390 Handle mirror(THREAD, m);
1391
1392 if (!k->is_array_klass()) {
1393 // - local static final fields with initial values were initialized at dump time
1394
1395 // create the init_lock
1396 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1397 set_init_lock(mirror(), r);
1398
1399 if (protection_domain.not_null()) {
1400 set_protection_domain(mirror(), protection_domain());
1401 }
1402 }
1403
1404 assert(class_loader() == k->class_loader(), "should be same");
1405 if (class_loader.not_null()) {
1406 set_class_loader(mirror(), class_loader());
1407 }
1408
1409 k->set_java_mirror(mirror);
1410
1411 set_mirror_module_field(THREAD, k, mirror, module);
1412
1413 if (log_is_enabled(Trace, cds, heap, mirror)) {
1414 ResourceMark rm(THREAD);
1415 log_trace(cds, heap, mirror)(
1416 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1417 }
1418
1419 return true;
1420 }
1421 #endif // INCLUDE_CDS_JAVA_HEAP
1422
1423 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1424 assert(_module_offset != 0, "must have been computed already");
1425 java_lang_Class::set_module(k->java_mirror(), module());
1426 }
1427
1428 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1429 assert(_oop_size_offset != 0, "must be set");
1430 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1431 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1432 }
1433
1434 int java_lang_Class::static_oop_field_count(oop java_class) {
1435 assert(_static_oop_field_count_offset != 0, "must be set");
1436 return java_class->int_field(_static_oop_field_count_offset);
1437 }
1438
1439 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1440 assert(_static_oop_field_count_offset != 0, "must be set");
1441 java_class->int_field_put(_static_oop_field_count_offset, size);
1442 }
1443
1444 oop java_lang_Class::protection_domain(oop java_class) {
1445 assert(_protection_domain_offset != 0, "must be set");
1446 return java_class->obj_field(_protection_domain_offset);
1447 }
1448 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1449 assert(_protection_domain_offset != 0, "must be set");
1450 java_class->obj_field_put(_protection_domain_offset, pd);
1451 }
1452
1453 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1454 assert(_component_mirror_offset != 0, "must be set");
1455 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1456 }
1457 oop java_lang_Class::component_mirror(oop java_class) {
1458 assert(_component_mirror_offset != 0, "must be set");
1459 return java_class->obj_field(_component_mirror_offset);
1460 }
1461
1462 oop java_lang_Class::primary_mirror(oop java_class) {
1463 assert(_primary_mirror_offset != 0, "must be set");
1464 return java_class->obj_field(_primary_mirror_offset);
1465 }
1466
1467 void java_lang_Class::set_primary_mirror(oop java_class, oop mirror) {
1468 assert(_primary_mirror_offset != 0, "must be set");
1469 java_class->obj_field_put(_primary_mirror_offset, mirror);
1470 }
1471
1472 oop java_lang_Class::secondary_mirror(oop java_class) {
1473 assert(_secondary_mirror_offset != 0, "must be set");
1474 return java_class->obj_field(_secondary_mirror_offset);
1475 }
1476
1477 void java_lang_Class::set_secondary_mirror(oop java_class, oop mirror) {
1478 assert(_secondary_mirror_offset != 0, "must be set");
1479 java_class->obj_field_put(_secondary_mirror_offset, mirror);
1480 }
1481
1482 oop java_lang_Class::init_lock(oop java_class) {
1483 assert(_init_lock_offset != 0, "must be set");
1484 return java_class->obj_field(_init_lock_offset);
1485 }
1486 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1487 assert(_init_lock_offset != 0, "must be set");
1488 java_class->obj_field_put(_init_lock_offset, init_lock);
1489 }
1490
1491 objArrayOop java_lang_Class::signers(oop java_class) {
1492 assert(_signers_offset != 0, "must be set");
1493 return (objArrayOop)java_class->obj_field(_signers_offset);
1494 }
1495 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1496 assert(_signers_offset != 0, "must be set");
1497 java_class->obj_field_put(_signers_offset, signers);
1498 }
1499
1500 oop java_lang_Class::class_data(oop java_class) {
1501 assert(_classData_offset != 0, "must be set");
1502 return java_class->obj_field(_classData_offset);
1503 }
1504 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1505 assert(_classData_offset != 0, "must be set");
1506 java_class->obj_field_put(_classData_offset, class_data);
1507 }
1508
1509 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1510 assert(_class_loader_offset != 0, "offsets should have been initialized");
1511 java_class->obj_field_put(_class_loader_offset, loader);
1512 }
1513
1514 oop java_lang_Class::class_loader(oop java_class) {
1515 assert(_class_loader_offset != 0, "must be set");
1516 return java_class->obj_field(_class_loader_offset);
1517 }
1518
1519 oop java_lang_Class::module(oop java_class) {
1520 assert(_module_offset != 0, "must be set");
1521 return java_class->obj_field(_module_offset);
1522 }
1523
1524 void java_lang_Class::set_module(oop java_class, oop module) {
1525 assert(_module_offset != 0, "must be set");
1526 java_class->obj_field_put(_module_offset, module);
1527 }
1528
1529 oop java_lang_Class::name(Handle java_class, TRAPS) {
1530 assert(_name_offset != 0, "must be set");
1531 oop o = java_class->obj_field(_name_offset);
1532 if (o == NULL) {
1533 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1534 java_class->obj_field_put(_name_offset, o);
1535 }
1536 return o;
1537 }
1538
1539 oop java_lang_Class::source_file(oop java_class) {
1540 assert(_source_file_offset != 0, "must be set");
1541 return java_class->obj_field(_source_file_offset);
1542 }
1543
1544 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1545 assert(_source_file_offset != 0, "must be set");
1546 java_class->obj_field_put(_source_file_offset, source_file);
1547 }
1548
1549 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1550 // This should be improved by adding a field at the Java level or by
1551 // introducing a new VM klass (see comment in ClassFileParser)
1552 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1553 if (type != T_VOID) {
1554 Klass* aklass = Universe::typeArrayKlassObj(type);
1555 assert(aklass != NULL, "correct bootstrap");
1556 release_set_array_klass(java_class, aklass);
1557 }
1558 #ifdef ASSERT
1559 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1560 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1561 #endif
1562 return java_class;
1563 }
1564
1565 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1566 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1567 java_class->metadata_field_put(_klass_offset, klass);
1568 }
1569
1570
1571 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1572 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1573 Symbol* name = NULL;
1574 bool is_instance = false;
1575 bool is_Q_descriptor = false;
1576 if (is_primitive(java_class)) {
1577 name = vmSymbols::type_signature(primitive_type(java_class));
1578 } else {
1579 Klass* k = as_Klass(java_class);
1580 is_instance = k->is_instance_klass();
1581 is_Q_descriptor = k->is_inline_klass() && is_secondary_mirror(java_class);
1582 name = k->name();
1583 }
1584 if (name == NULL) {
1585 st->print("<null>");
1586 return;
1587 }
1588 if (is_instance) {
1589 st->print(is_Q_descriptor ? "Q" : "L");
1590 }
1591 st->write((char*) name->base(), (int) name->utf8_length());
1592 if (is_instance) st->print(";");
1593 }
1594
1595 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1596 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1597 Symbol* name;
1598 if (is_primitive(java_class)) {
1599 name = vmSymbols::type_signature(primitive_type(java_class));
1600 // Because this can create a new symbol, the caller has to decrement
1601 // the refcount, so make adjustment here and below for symbols returned
1602 // that are not created or incremented due to a successful lookup.
1603 name->increment_refcount();
1604 } else {
1605 Klass* k = as_Klass(java_class);
1606 if (!k->is_instance_klass()) {
1607 name = k->name();
1608 name->increment_refcount();
1609 } else {
1610 ResourceMark rm;
1611 const char* sigstr;
1612 if (k->is_inline_klass() && is_secondary_mirror(java_class)) {
1613 sigstr = InlineKlass::cast(k)->val_signature_name();
1614 } else {
1615 sigstr = k->signature_name();
1616 }
1617 int siglen = (int) strlen(sigstr);
1618 if (!intern_if_not_found) {
1619 name = SymbolTable::probe(sigstr, siglen);
1620 } else {
1621 name = SymbolTable::new_symbol(sigstr, siglen);
1622 }
1623 }
1624 }
1625 return name;
1626 }
1627
1628 // Returns the Java name for this Java mirror (Resource allocated)
1629 // See Klass::external_name().
1630 // For primitive type Java mirrors, its type name is returned.
1631 const char* java_lang_Class::as_external_name(oop java_class) {
1632 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1633 const char* name = NULL;
1634 if (is_primitive(java_class)) {
1635 name = type2name(primitive_type(java_class));
1636 } else {
1637 name = as_Klass(java_class)->external_name();
1638 }
1639 if (name == NULL) {
1640 name = "<null>";
1641 }
1642 return name;
1643 }
1644
1645 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1646 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1647 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1648 return k;
1649 }
1650
1651
1652 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1653 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1654 java_class->release_metadata_field_put(_array_klass_offset, klass);
1655 }
1656
1657
1658 BasicType java_lang_Class::primitive_type(oop java_class) {
1659 assert(java_lang_Class::is_primitive(java_class), "just checking");
1660 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1661 BasicType type = T_VOID;
1662 if (ak != NULL) {
1663 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1664 type = ArrayKlass::cast(ak)->element_type();
1665 } else {
1666 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1667 }
1668 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1669 return type;
1670 }
1671
1672 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1673 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1674 if (is_primitive(java_class)) {
1675 if (reference_klass != NULL)
1676 (*reference_klass) = NULL;
1677 return primitive_type(java_class);
1678 } else {
1679 if (reference_klass != NULL)
1680 (*reference_klass) = as_Klass(java_class);
1681 return T_OBJECT;
1682 }
1683 }
1684
1685
1686 oop java_lang_Class::primitive_mirror(BasicType t) {
1687 oop mirror = Universe::java_mirror(t);
1688 assert(mirror != NULL && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1689 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1690 return mirror;
1691 }
1692
1693 #define CLASS_FIELDS_DO(macro) \
1694 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1695 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1696 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1697 macro(_primary_mirror_offset, k, "primaryType", class_signature, false); \
1698 macro(_secondary_mirror_offset, k, "secondaryType", class_signature, false); \
1699 macro(_module_offset, k, "module", module_signature, false); \
1700 macro(_name_offset, k, "name", string_signature, false); \
1701 macro(_classData_offset, k, "classData", object_signature, false);
1702
1703 void java_lang_Class::compute_offsets() {
1704 if (_offsets_computed) {
1705 return;
1706 }
1707
1708 _offsets_computed = true;
1709
1710 InstanceKlass* k = vmClasses::Class_klass();
1711 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1712
1713 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1714 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1715 // GC treats them the same.
1716 _init_lock_offset = _component_mirror_offset;
1717
1718 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1719 }
1720
1721 #if INCLUDE_CDS
1722 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1723 f->do_bool(&_offsets_computed);
1724 f->do_u4((u4*)&_init_lock_offset);
1725
1726 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1727
1728 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1729 }
1730 #endif
1731
1732 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1733 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1734 return the_class_mirror->int_field(_classRedefinedCount_offset);
1735 }
1736
1737 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1738 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1739 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1740 }
1741
1742
1743 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1744 // platform thread structure, and a eetop offset which was used for thread
1745 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1746 // merged, so in the HotSpot VM we just use the eetop field for the thread
1747 // instead of the privateInfo_offset.
1748 //
1749 // Note: The stackSize field is only present starting in 1.4.
1750
1751 int java_lang_Thread::_name_offset;
1752 int java_lang_Thread::_group_offset;
1753 int java_lang_Thread::_contextClassLoader_offset;
1754 int java_lang_Thread::_inheritedAccessControlContext_offset;
1755 int java_lang_Thread::_priority_offset;
1756 int java_lang_Thread::_eetop_offset;
1757 int java_lang_Thread::_interrupted_offset;
1758 int java_lang_Thread::_daemon_offset;
1759 int java_lang_Thread::_stillborn_offset;
1760 int java_lang_Thread::_stackSize_offset;
1761 int java_lang_Thread::_tid_offset;
1762 int java_lang_Thread::_thread_status_offset;
1763 int java_lang_Thread::_park_blocker_offset;
1764
1765 #define THREAD_FIELDS_DO(macro) \
1766 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1767 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1768 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1769 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1770 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1771 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1772 macro(_eetop_offset, k, "eetop", long_signature, false); \
1773 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1774 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1775 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1776 macro(_tid_offset, k, "tid", long_signature, false); \
1777 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1778 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1779
1780 void java_lang_Thread::compute_offsets() {
1781 assert(_group_offset == 0, "offsets should be initialized only once");
1782
1783 InstanceKlass* k = vmClasses::Thread_klass();
1784 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1785 }
1786
1787 #if INCLUDE_CDS
1788 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1789 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1790 }
1791 #endif
1792
1793 JavaThread* java_lang_Thread::thread(oop java_thread) {
1794 return (JavaThread*)java_thread->address_field(_eetop_offset);
1795 }
1796
1797
1798 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1799 java_thread->address_field_put(_eetop_offset, (address)thread);
1800 }
1801
1802 bool java_lang_Thread::interrupted(oop java_thread) {
1803 // Make sure the caller can safely access oops.
1804 assert(Thread::current()->is_VM_thread() ||
1805 (JavaThread::current()->thread_state() != _thread_blocked &&
1806 JavaThread::current()->thread_state() != _thread_in_native),
1807 "Unsafe access to oop");
1808 return java_thread->bool_field_volatile(_interrupted_offset);
1809 }
1810
1811 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1812 // Make sure the caller can safely access oops.
1813 assert(Thread::current()->is_VM_thread() ||
1814 (JavaThread::current()->thread_state() != _thread_blocked &&
1815 JavaThread::current()->thread_state() != _thread_in_native),
1816 "Unsafe access to oop");
1817 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1818 }
1819
1820
1821 oop java_lang_Thread::name(oop java_thread) {
1822 return java_thread->obj_field(_name_offset);
1823 }
1824
1825
1826 void java_lang_Thread::set_name(oop java_thread, oop name) {
1827 java_thread->obj_field_put(_name_offset, name);
1828 }
1829
1830
1831 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1832 return (ThreadPriority)java_thread->int_field(_priority_offset);
1833 }
1834
1835
1836 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1837 java_thread->int_field_put(_priority_offset, priority);
1838 }
1839
1840
1841 oop java_lang_Thread::threadGroup(oop java_thread) {
1842 return java_thread->obj_field(_group_offset);
1843 }
1844
1845
1846 bool java_lang_Thread::is_stillborn(oop java_thread) {
1847 return java_thread->bool_field(_stillborn_offset) != 0;
1848 }
1849
1850
1851 // We never have reason to turn the stillborn bit off
1852 void java_lang_Thread::set_stillborn(oop java_thread) {
1853 java_thread->bool_field_put(_stillborn_offset, true);
1854 }
1855
1856
1857 bool java_lang_Thread::is_alive(oop java_thread) {
1858 JavaThread* thr = java_lang_Thread::thread(java_thread);
1859 return (thr != NULL);
1860 }
1861
1862
1863 bool java_lang_Thread::is_daemon(oop java_thread) {
1864 return java_thread->bool_field(_daemon_offset) != 0;
1865 }
1866
1867
1868 void java_lang_Thread::set_daemon(oop java_thread) {
1869 java_thread->bool_field_put(_daemon_offset, true);
1870 }
1871
1872 oop java_lang_Thread::context_class_loader(oop java_thread) {
1873 return java_thread->obj_field(_contextClassLoader_offset);
1874 }
1875
1876 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1877 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1878 }
1879
1880
1881 jlong java_lang_Thread::stackSize(oop java_thread) {
1882 return java_thread->long_field(_stackSize_offset);
1883 }
1884
1885 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1886 void java_lang_Thread::set_thread_status(oop java_thread,
1887 JavaThreadStatus status) {
1888 java_thread->int_field_put(_thread_status_offset, static_cast<int>(status));
1889 }
1890
1891 // Read thread status value from threadStatus field in java.lang.Thread java class.
1892 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1893 // Make sure the caller is operating on behalf of the VM or is
1894 // running VM code (state == _thread_in_vm).
1895 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1896 JavaThread::current()->thread_state() == _thread_in_vm,
1897 "Java Thread is not running in vm");
1898 return static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1899 }
1900
1901
1902 jlong java_lang_Thread::thread_id(oop java_thread) {
1903 return java_thread->long_field(_tid_offset);
1904 }
1905
1906 oop java_lang_Thread::park_blocker(oop java_thread) {
1907 return java_thread->obj_field(_park_blocker_offset);
1908 }
1909
1910 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1911 JavaThreadStatus status = static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1912 switch (status) {
1913 case JavaThreadStatus::NEW : return "NEW";
1914 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1915 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1916 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1917 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1918 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1919 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1920 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1921 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1922 default : return "UNKNOWN";
1923 };
1924 }
1925 int java_lang_ThreadGroup::_parent_offset;
1926 int java_lang_ThreadGroup::_name_offset;
1927 int java_lang_ThreadGroup::_threads_offset;
1928 int java_lang_ThreadGroup::_groups_offset;
1929 int java_lang_ThreadGroup::_maxPriority_offset;
1930 int java_lang_ThreadGroup::_destroyed_offset;
1931 int java_lang_ThreadGroup::_daemon_offset;
1932 int java_lang_ThreadGroup::_nthreads_offset;
1933 int java_lang_ThreadGroup::_ngroups_offset;
1934
1935 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1936 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1937 return java_thread_group->obj_field(_parent_offset);
1938 }
1939
1940 // ("name as oop" accessor is not necessary)
1941
1942 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1943 oop name = java_thread_group->obj_field(_name_offset);
1944 // ThreadGroup.name can be null
1945 if (name != NULL) {
1946 return java_lang_String::as_utf8_string(name);
1947 }
1948 return NULL;
1949 }
1950
1951 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1952 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1953 return java_thread_group->int_field(_nthreads_offset);
1954 }
1955
1956 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1957 oop threads = java_thread_group->obj_field(_threads_offset);
1958 assert(threads != NULL, "threadgroups should have threads");
1959 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1960 return objArrayOop(threads);
1961 }
1962
1963 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1964 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1965 return java_thread_group->int_field(_ngroups_offset);
1966 }
1967
1968 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1969 oop groups = java_thread_group->obj_field(_groups_offset);
1970 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1971 return objArrayOop(groups);
1972 }
1973
1974 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1975 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1976 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1977 }
1978
1979 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1980 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1981 return java_thread_group->bool_field(_destroyed_offset) != 0;
1982 }
1983
1984 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1985 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1986 return java_thread_group->bool_field(_daemon_offset) != 0;
1987 }
1988
1989 #define THREADGROUP_FIELDS_DO(macro) \
1990 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1991 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1992 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1993 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1994 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1995 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1996 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1997 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1998 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1999
2000 void java_lang_ThreadGroup::compute_offsets() {
2001 assert(_parent_offset == 0, "offsets should be initialized only once");
2002
2003 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2004 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2005 }
2006
2007 #if INCLUDE_CDS
2008 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2009 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2010 }
2011 #endif
2012
2013 // java_lang_Throwable
2014
2015 int java_lang_Throwable::_backtrace_offset;
2016 int java_lang_Throwable::_detailMessage_offset;
2017 int java_lang_Throwable::_stackTrace_offset;
2018 int java_lang_Throwable::_depth_offset;
2019 int java_lang_Throwable::_cause_offset;
2020 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2021
2022 #define THROWABLE_FIELDS_DO(macro) \
2023 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2024 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2025 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2026 macro(_depth_offset, k, "depth", int_signature, false); \
2027 macro(_cause_offset, k, "cause", throwable_signature, false); \
2028 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2029
2030 void java_lang_Throwable::compute_offsets() {
2031 InstanceKlass* k = vmClasses::Throwable_klass();
2032 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2033 }
2034
2035 #if INCLUDE_CDS
2036 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2037 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2038 }
2039 #endif
2040
2041 oop java_lang_Throwable::unassigned_stacktrace() {
2042 InstanceKlass* ik = vmClasses::Throwable_klass();
2043 oop base = ik->static_field_base_raw();
2044 return base->obj_field(_static_unassigned_stacktrace_offset);
2045 }
2046
2047 oop java_lang_Throwable::backtrace(oop throwable) {
2048 return throwable->obj_field_acquire(_backtrace_offset);
2049 }
2050
2051
2052 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2053 throwable->release_obj_field_put(_backtrace_offset, value);
2054 }
2055
2056 int java_lang_Throwable::depth(oop throwable) {
2057 return throwable->int_field(_depth_offset);
2058 }
2059
2060 void java_lang_Throwable::set_depth(oop throwable, int value) {
2061 throwable->int_field_put(_depth_offset, value);
2062 }
2063
2064 oop java_lang_Throwable::message(oop throwable) {
2065 return throwable->obj_field(_detailMessage_offset);
2066 }
2067
2068 oop java_lang_Throwable::cause(oop throwable) {
2069 return throwable->obj_field(_cause_offset);
2070 }
2071
2072 // Return Symbol for detailed_message or NULL
2073 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2074 PreserveExceptionMark pm(Thread::current());
2075 oop detailed_message = java_lang_Throwable::message(throwable);
2076 if (detailed_message != NULL) {
2077 return java_lang_String::as_symbol(detailed_message);
2078 }
2079 return NULL;
2080 }
2081
2082 void java_lang_Throwable::set_message(oop throwable, oop value) {
2083 throwable->obj_field_put(_detailMessage_offset, value);
2084 }
2085
2086
2087 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2088 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2089 }
2090
2091 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2092 set_stacktrace(throwable, NULL);
2093 }
2094
2095
2096 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2097 ResourceMark rm;
2098 Klass* k = throwable->klass();
2099 assert(k != NULL, "just checking");
2100 st->print("%s", k->external_name());
2101 oop msg = message(throwable);
2102 if (msg != NULL) {
2103 st->print(": %s", java_lang_String::as_utf8_string(msg));
2104 }
2105 }
2106
2107 // After this many redefines, the stack trace is unreliable.
2108 const int MAX_VERSION = USHRT_MAX;
2109
2110 static inline bool version_matches(Method* method, int version) {
2111 assert(version < MAX_VERSION, "version is too big");
2112 return method != NULL && (method->constants()->version() == version);
2113 }
2114
2115 // This class provides a simple wrapper over the internal structure of
2116 // exception backtrace to insulate users of the backtrace from needing
2117 // to know what it looks like.
2118 // The code of this class is not GC safe. Allocations can only happen
2119 // in expand().
2120 class BacktraceBuilder: public StackObj {
2121 friend class BacktraceIterator;
2122 private:
2123 Handle _backtrace;
2124 objArrayOop _head;
2125 typeArrayOop _methods;
2126 typeArrayOop _bcis;
2127 objArrayOop _mirrors;
2128 typeArrayOop _names; // Needed to insulate method name against redefinition.
2129 // True if the top frame of the backtrace is omitted because it shall be hidden.
2130 bool _has_hidden_top_frame;
2131 int _index;
2132 NoSafepointVerifier _nsv;
2133
2134 enum {
2135 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2136 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2137 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2138 trace_names_offset = java_lang_Throwable::trace_names_offset,
2139 trace_next_offset = java_lang_Throwable::trace_next_offset,
2140 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2141 trace_size = java_lang_Throwable::trace_size,
2142 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2143 };
2144
2145 // get info out of chunks
2146 static typeArrayOop get_methods(objArrayHandle chunk) {
2147 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2148 assert(methods != NULL, "method array should be initialized in backtrace");
2149 return methods;
2150 }
2151 static typeArrayOop get_bcis(objArrayHandle chunk) {
2152 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2153 assert(bcis != NULL, "bci array should be initialized in backtrace");
2154 return bcis;
2155 }
2156 static objArrayOop get_mirrors(objArrayHandle chunk) {
2157 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2158 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2159 return mirrors;
2160 }
2161 static typeArrayOop get_names(objArrayHandle chunk) {
2162 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2163 assert(names != NULL, "names array should be initialized in backtrace");
2164 return names;
2165 }
2166 static bool has_hidden_top_frame(objArrayHandle chunk) {
2167 oop hidden = chunk->obj_at(trace_hidden_offset);
2168 return hidden != NULL;
2169 }
2170
2171 public:
2172
2173 // constructor for new backtrace
2174 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2175 expand(CHECK);
2176 _backtrace = Handle(THREAD, _head);
2177 _index = 0;
2178 }
2179
2180 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2181 _methods = get_methods(backtrace);
2182 _bcis = get_bcis(backtrace);
2183 _mirrors = get_mirrors(backtrace);
2184 _names = get_names(backtrace);
2185 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2186 assert(_methods->length() == _bcis->length() &&
2187 _methods->length() == _mirrors->length() &&
2188 _mirrors->length() == _names->length(),
2189 "method and source information arrays should match");
2190
2191 // head is the preallocated backtrace
2192 _head = backtrace();
2193 _backtrace = Handle(thread, _head);
2194 _index = 0;
2195 }
2196
2197 void expand(TRAPS) {
2198 objArrayHandle old_head(THREAD, _head);
2199 PauseNoSafepointVerifier pnsv(&_nsv);
2200
2201 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2202 objArrayHandle new_head(THREAD, head);
2203
2204 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2205 typeArrayHandle new_methods(THREAD, methods);
2206
2207 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2208 typeArrayHandle new_bcis(THREAD, bcis);
2209
2210 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2211 objArrayHandle new_mirrors(THREAD, mirrors);
2212
2213 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2214 typeArrayHandle new_names(THREAD, names);
2215
2216 if (!old_head.is_null()) {
2217 old_head->obj_at_put(trace_next_offset, new_head());
2218 }
2219 new_head->obj_at_put(trace_methods_offset, new_methods());
2220 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2221 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2222 new_head->obj_at_put(trace_names_offset, new_names());
2223 new_head->obj_at_put(trace_hidden_offset, NULL);
2224
2225 _head = new_head();
2226 _methods = new_methods();
2227 _bcis = new_bcis();
2228 _mirrors = new_mirrors();
2229 _names = new_names();
2230 _index = 0;
2231 }
2232
2233 oop backtrace() {
2234 return _backtrace();
2235 }
2236
2237 inline void push(Method* method, int bci, TRAPS) {
2238 // Smear the -1 bci to 0 since the array only holds unsigned
2239 // shorts. The later line number lookup would just smear the -1
2240 // to a 0 even if it could be recorded.
2241 if (bci == SynchronizationEntryBCI) bci = 0;
2242
2243 if (_index >= trace_chunk_size) {
2244 methodHandle mhandle(THREAD, method);
2245 expand(CHECK);
2246 method = mhandle();
2247 }
2248
2249 _methods->ushort_at_put(_index, method->orig_method_idnum());
2250 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2251
2252 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2253 // klass owning the symbols alive so their refcounts aren't decremented.
2254 Symbol* name = method->name();
2255 _names->symbol_at_put(_index, name);
2256
2257 // We need to save the mirrors in the backtrace to keep the class
2258 // from being unloaded while we still have this stack trace.
2259 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2260 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2261 _index++;
2262 }
2263
2264 void set_has_hidden_top_frame() {
2265 if (!_has_hidden_top_frame) {
2266 // It would be nice to add java/lang/Boolean::TRUE here
2267 // to indicate that this backtrace has a hidden top frame.
2268 // But this code is used before TRUE is allocated.
2269 // Therefore let's just use an arbitrary legal oop
2270 // available right here. _methods is a short[].
2271 assert(_methods != NULL, "we need a legal oop");
2272 _has_hidden_top_frame = true;
2273 _head->obj_at_put(trace_hidden_offset, _methods);
2274 }
2275 }
2276 };
2277
2278 struct BacktraceElement : public StackObj {
2279 int _method_id;
2280 int _bci;
2281 int _version;
2282 Symbol* _name;
2283 Handle _mirror;
2284 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2285 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2286 };
2287
2288 class BacktraceIterator : public StackObj {
2289 int _index;
2290 objArrayHandle _result;
2291 objArrayHandle _mirrors;
2292 typeArrayHandle _methods;
2293 typeArrayHandle _bcis;
2294 typeArrayHandle _names;
2295
2296 void init(objArrayHandle result, Thread* thread) {
2297 // Get method id, bci, version and mirror from chunk
2298 _result = result;
2299 if (_result.not_null()) {
2300 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2301 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2302 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2303 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2304 _index = 0;
2305 }
2306 }
2307 public:
2308 BacktraceIterator(objArrayHandle result, Thread* thread) {
2309 init(result, thread);
2310 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2311 }
2312
2313 BacktraceElement next(Thread* thread) {
2314 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2315 _methods->ushort_at(_index),
2316 Backtrace::version_at(_bcis->int_at(_index)),
2317 Backtrace::bci_at(_bcis->int_at(_index)),
2318 _names->symbol_at(_index));
2319 _index++;
2320
2321 if (_index >= java_lang_Throwable::trace_chunk_size) {
2322 int next_offset = java_lang_Throwable::trace_next_offset;
2323 // Get next chunk
2324 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2325 init(result, thread);
2326 }
2327 return e;
2328 }
2329
2330 bool repeat() {
2331 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2332 }
2333 };
2334
2335
2336 // Print stack trace element to resource allocated buffer
2337 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2338 int version, int bci, Symbol* name) {
2339 ResourceMark rm;
2340
2341 // Get strings and string lengths
2342 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2343 const char* klass_name = holder->external_name();
2344 int buf_len = (int)strlen(klass_name);
2345
2346 char* method_name = name->as_C_string();
2347 buf_len += (int)strlen(method_name);
2348
2349 char* source_file_name = NULL;
2350 Symbol* source = Backtrace::get_source_file_name(holder, version);
2351 if (source != NULL) {
2352 source_file_name = source->as_C_string();
2353 buf_len += (int)strlen(source_file_name);
2354 }
2355
2356 char *module_name = NULL, *module_version = NULL;
2357 ModuleEntry* module = holder->module();
2358 if (module->is_named()) {
2359 module_name = module->name()->as_C_string();
2360 buf_len += (int)strlen(module_name);
2361 if (module->version() != NULL) {
2362 module_version = module->version()->as_C_string();
2363 buf_len += (int)strlen(module_version);
2364 }
2365 }
2366
2367 // Allocate temporary buffer with extra space for formatting and line number
2368 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2369
2370 // Print stack trace line in buffer
2371 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2372
2373 // Print module information
2374 if (module_name != NULL) {
2375 if (module_version != NULL) {
2376 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2377 } else {
2378 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2379 }
2380 }
2381
2382 // The method can be NULL if the requested class version is gone
2383 Method* method = holder->method_with_orig_idnum(method_id, version);
2384 if (!version_matches(method, version)) {
2385 strcat(buf, "Redefined)");
2386 } else {
2387 int line_number = Backtrace::get_line_number(method, bci);
2388 if (line_number == -2) {
2389 strcat(buf, "Native Method)");
2390 } else {
2391 if (source_file_name != NULL && (line_number != -1)) {
2392 // Sourcename and linenumber
2393 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2394 } else if (source_file_name != NULL) {
2395 // Just sourcename
2396 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2397 } else {
2398 // Neither sourcename nor linenumber
2399 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2400 }
2401 CompiledMethod* nm = method->code();
2402 if (WizardMode && nm != NULL) {
2403 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2404 }
2405 }
2406 }
2407
2408 st->print_cr("%s", buf);
2409 }
2410
2411 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2412 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2413 int method_id = method->orig_method_idnum();
2414 int version = method->constants()->version();
2415 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2416 }
2417
2418 /**
2419 * Print the throwable message and its stack trace plus all causes by walking the
2420 * cause chain. The output looks the same as of Throwable.printStackTrace().
2421 */
2422 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2423 // First, print the message.
2424 print(throwable(), st);
2425 st->cr();
2426
2427 // Now print the stack trace.
2428 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2429 while (throwable.not_null()) {
2430 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2431 if (result.is_null()) {
2432 st->print_raw_cr("\t<<no stack trace available>>");
2433 return;
2434 }
2435 BacktraceIterator iter(result, THREAD);
2436
2437 while (iter.repeat()) {
2438 BacktraceElement bte = iter.next(THREAD);
2439 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2440 }
2441 {
2442 // Call getCause() which doesn't necessarily return the _cause field.
2443 ExceptionMark em(THREAD);
2444 JavaValue cause(T_OBJECT);
2445 JavaCalls::call_virtual(&cause,
2446 throwable,
2447 throwable->klass(),
2448 vmSymbols::getCause_name(),
2449 vmSymbols::void_throwable_signature(),
2450 THREAD);
2451 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2452 if (HAS_PENDING_EXCEPTION) {
2453 CLEAR_PENDING_EXCEPTION;
2454 throwable = Handle();
2455 } else {
2456 throwable = Handle(THREAD, cause.get_oop());
2457 if (throwable.not_null()) {
2458 st->print("Caused by: ");
2459 print(throwable(), st);
2460 st->cr();
2461 }
2462 }
2463 }
2464 }
2465 }
2466
2467 /**
2468 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2469 */
2470 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2471 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2472 JavaValue result(T_VOID);
2473 JavaCalls::call_virtual(&result,
2474 throwable,
2475 vmClasses::Throwable_klass(),
2476 vmSymbols::printStackTrace_name(),
2477 vmSymbols::void_method_signature(),
2478 THREAD);
2479 }
2480
2481 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2482 if (!StackTraceInThrowable) return;
2483 ResourceMark rm(THREAD);
2484
2485 // Start out by clearing the backtrace for this object, in case the VM
2486 // runs out of memory while allocating the stack trace
2487 set_backtrace(throwable(), NULL);
2488 // Clear lazily constructed Java level stacktrace if refilling occurs
2489 // This is unnecessary in 1.7+ but harmless
2490 clear_stacktrace(throwable());
2491
2492 int max_depth = MaxJavaStackTraceDepth;
2493 JavaThread* thread = THREAD;
2494
2495 BacktraceBuilder bt(CHECK);
2496
2497 // If there is no Java frame just return the method that was being called
2498 // with bci 0
2499 if (!thread->has_last_Java_frame()) {
2500 if (max_depth >= 1 && method() != NULL) {
2501 bt.push(method(), 0, CHECK);
2502 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2503 set_depth(throwable(), 1);
2504 set_backtrace(throwable(), bt.backtrace());
2505 }
2506 return;
2507 }
2508
2509 // Instead of using vframe directly, this version of fill_in_stack_trace
2510 // basically handles everything by hand. This significantly improved the
2511 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2512 // See bug 6333838 for more details.
2513 // The "ASSERT" here is to verify this method generates the exactly same stack
2514 // trace as utilizing vframe.
2515 #ifdef ASSERT
2516 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2517 #endif
2518 int total_count = 0;
2519 RegisterMap map(thread, false /* update */, false /* process_frames */);
2520 int decode_offset = 0;
2521 CompiledMethod* nm = NULL;
2522 bool skip_fillInStackTrace_check = false;
2523 bool skip_throwableInit_check = false;
2524 bool skip_hidden = !ShowHiddenFrames;
2525
2526 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2527 Method* method = NULL;
2528 int bci = 0;
2529
2530 // Compiled java method case.
2531 if (decode_offset != 0) {
2532 DebugInfoReadStream stream(nm, decode_offset);
2533 decode_offset = stream.read_int();
2534 method = (Method*)nm->metadata_at(stream.read_int());
2535 bci = stream.read_bci();
2536 } else {
2537 if (fr.is_first_frame()) break;
2538 address pc = fr.pc();
2539 if (fr.is_interpreted_frame()) {
2540 address bcp = fr.interpreter_frame_bcp();
2541 method = fr.interpreter_frame_method();
2542 bci = method->bci_from(bcp);
2543 fr = fr.sender(&map);
2544 } else {
2545 CodeBlob* cb = fr.cb();
2546 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2547 // but non nmethod
2548 fr = fr.sender(&map);
2549 if (cb == NULL || !cb->is_compiled()) {
2550 continue;
2551 }
2552 nm = cb->as_compiled_method();
2553 if (nm->method()->is_native()) {
2554 method = nm->method();
2555 bci = 0;
2556 } else {
2557 PcDesc* pd = nm->pc_desc_at(pc);
2558 decode_offset = pd->scope_decode_offset();
2559 // if decode_offset is not equal to 0, it will execute the
2560 // "compiled java method case" at the beginning of the loop.
2561 continue;
2562 }
2563 }
2564 }
2565 #ifdef ASSERT
2566 assert(st.method() == method && st.bci() == bci,
2567 "Wrong stack trace");
2568 st.next();
2569 #endif
2570
2571 // the format of the stacktrace will be:
2572 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2573 // - 0 or more <init> methods for the exception class (skipped)
2574 // - rest of the stack
2575
2576 if (!skip_fillInStackTrace_check) {
2577 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2578 throwable->is_a(method->method_holder())) {
2579 continue;
2580 }
2581 else {
2582 skip_fillInStackTrace_check = true; // gone past them all
2583 }
2584 }
2585 if (!skip_throwableInit_check) {
2586 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2587
2588 // skip <init> methods of the exception class and superclasses
2589 // This is similar to classic VM (before HotSpot).
2590 if (method->is_object_constructor() &&
2591 throwable->is_a(method->method_holder())) {
2592 continue;
2593 } else {
2594 // there are none or we've seen them all - either way stop checking
2595 skip_throwableInit_check = true;
2596 }
2597 }
2598 if (method->is_hidden()) {
2599 if (skip_hidden) {
2600 if (total_count == 0) {
2601 // The top frame will be hidden from the stack trace.
2602 bt.set_has_hidden_top_frame();
2603 }
2604 continue;
2605 }
2606 }
2607 bt.push(method, bci, CHECK);
2608 total_count++;
2609 }
2610
2611 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2612
2613 // Put completed stack trace into throwable object
2614 set_backtrace(throwable(), bt.backtrace());
2615 set_depth(throwable(), total_count);
2616 }
2617
2618 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2619 // No-op if stack trace is disabled
2620 if (!StackTraceInThrowable) {
2621 return;
2622 }
2623
2624 // Disable stack traces for some preallocated out of memory errors
2625 if (!Universe::should_fill_in_stack_trace(throwable)) {
2626 return;
2627 }
2628
2629 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2630 PreserveExceptionMark pm(THREAD);
2631
2632 fill_in_stack_trace(throwable, method, THREAD);
2633 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2634 // original exception via the PreserveExceptionMark destructor.
2635 CLEAR_PENDING_EXCEPTION;
2636 }
2637
2638 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2639 // Allocate stack trace - backtrace is created but not filled in
2640
2641 // No-op if stack trace is disabled
2642 if (!StackTraceInThrowable) return;
2643 BacktraceBuilder bt(CHECK); // creates a backtrace
2644 set_backtrace(throwable(), bt.backtrace());
2645 }
2646
2647
2648 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2649 // Fill in stack trace into preallocated backtrace (no GC)
2650
2651 // No-op if stack trace is disabled
2652 if (!StackTraceInThrowable) return;
2653
2654 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2655
2656 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2657
2658 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2659 assert(backtrace.not_null(), "backtrace should have been preallocated");
2660
2661 ResourceMark rm(THREAD);
2662 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2663
2664 BacktraceBuilder bt(THREAD, backtrace);
2665
2666 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2667 // methods as preallocated errors aren't created by "java" code.
2668
2669 // fill in as much stack trace as possible
2670 int chunk_count = 0;
2671 for (;!st.at_end(); st.next()) {
2672 bt.push(st.method(), st.bci(), CHECK);
2673 chunk_count++;
2674
2675 // Bail-out for deep stacks
2676 if (chunk_count >= trace_chunk_size) break;
2677 }
2678 set_depth(throwable(), chunk_count);
2679 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2680
2681 // We support the Throwable immutability protocol defined for Java 7.
2682 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2683 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2684 }
2685
2686 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2687 objArrayHandle stack_trace_array_h, TRAPS) {
2688
2689 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2690 THROW(vmSymbols::java_lang_NullPointerException());
2691 }
2692
2693 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2694
2695 if (stack_trace_array_h->length() != depth(throwable())) {
2696 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2697 }
2698
2699 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2700 BacktraceIterator iter(result, THREAD);
2701
2702 int index = 0;
2703 while (iter.repeat()) {
2704 BacktraceElement bte = iter.next(THREAD);
2705
2706 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2707
2708 if (stack_trace_element.is_null()) {
2709 THROW(vmSymbols::java_lang_NullPointerException());
2710 }
2711
2712 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2713 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2714
2715 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2716 method,
2717 bte._version,
2718 bte._bci,
2719 bte._name, CHECK);
2720 }
2721 }
2722
2723 Handle java_lang_Throwable::get_cause_with_stack_trace(Handle throwable, TRAPS) {
2724 // Call to JVM to fill in the stack trace and clear declaringClassObject to
2725 // not keep classes alive in the stack trace.
2726 // call this: public StackTraceElement[] getStackTrace()
2727 assert(throwable.not_null(), "shouldn't be");
2728
2729 JavaValue result(T_ARRAY);
2730 JavaCalls::call_virtual(&result, throwable,
2731 vmClasses::Throwable_klass(),
2732 vmSymbols::getStackTrace_name(),
2733 vmSymbols::getStackTrace_signature(),
2734 CHECK_NH);
2735 Handle stack_trace(THREAD, result.get_oop());
2736 assert(stack_trace->is_objArray(), "Should be an array");
2737
2738 // Throw ExceptionInInitializerError as the cause with this exception in
2739 // the message and stack trace.
2740
2741 // Now create the message with the original exception and thread name.
2742 Symbol* message = java_lang_Throwable::detail_message(throwable());
2743 ResourceMark rm(THREAD);
2744 stringStream st;
2745 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2746 message == nullptr ? "" : ":");
2747 if (message == NULL) {
2748 st.print("[in thread \"%s\"]", THREAD->name());
2749 } else {
2750 st.print("%s [in thread \"%s\"]", message->as_C_string(), THREAD->name());
2751 }
2752
2753 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2754 Handle h_cause = Exceptions::new_exception(THREAD, exception_name, st.as_string());
2755
2756 // If new_exception returns a different exception while creating the exception, return null.
2757 if (h_cause->klass()->name() != exception_name) {
2758 log_info(class, init)("Exception thrown while saving initialization exception %s",
2759 h_cause->klass()->external_name());
2760 return Handle();
2761 }
2762 java_lang_Throwable::set_stacktrace(h_cause(), stack_trace());
2763 // Clear backtrace because the stacktrace should be used instead.
2764 set_backtrace(h_cause(), NULL);
2765 return h_cause;
2766 }
2767
2768 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2769 JavaThread* current = JavaThread::current();
2770 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2771 BacktraceIterator iter(result, current);
2772 // No backtrace available.
2773 if (!iter.repeat()) return false;
2774
2775 // If the exception happened in a frame that has been hidden, i.e.,
2776 // omitted from the back trace, we can not compute the message.
2777 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2778 if (hidden != NULL) {
2779 return false;
2780 }
2781
2782 // Get first backtrace element.
2783 BacktraceElement bte = iter.next(current);
2784
2785 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2786 assert(holder != NULL, "first element should be non-null");
2787 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2788
2789 // Original version is no longer available.
2790 if (m == NULL || !version_matches(m, bte._version)) {
2791 return false;
2792 }
2793
2794 *method = m;
2795 *bci = bte._bci;
2796 return true;
2797 }
2798
2799 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2800 // Allocate java.lang.StackTraceElement instance
2801 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2802 assert(k != NULL, "must be loaded in 1.4+");
2803 if (k->should_be_initialized()) {
2804 k->initialize(CHECK_NULL);
2805 }
2806
2807 Handle element = k->allocate_instance_handle(CHECK_NULL);
2808
2809 int version = method->constants()->version();
2810 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2811 return element();
2812 }
2813
2814 void java_lang_StackTraceElement::fill_in(Handle element,
2815 InstanceKlass* holder, const methodHandle& method,
2816 int version, int bci, Symbol* name, TRAPS) {
2817 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2818
2819 ResourceMark rm(THREAD);
2820 HandleMark hm(THREAD);
2821
2822 // Fill in class name
2823 Handle java_class(THREAD, holder->java_mirror());
2824 oop classname = java_lang_Class::name(java_class, CHECK);
2825 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2826 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2827
2828 oop loader = holder->class_loader();
2829 if (loader != NULL) {
2830 oop loader_name = java_lang_ClassLoader::name(loader);
2831 if (loader_name != NULL)
2832 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2833 }
2834
2835 // Fill in method name
2836 oop methodname = StringTable::intern(name, CHECK);
2837 java_lang_StackTraceElement::set_methodName(element(), methodname);
2838
2839 // Fill in module name and version
2840 ModuleEntry* module = holder->module();
2841 if (module->is_named()) {
2842 oop module_name = StringTable::intern(module->name(), CHECK);
2843 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2844 oop module_version;
2845 if (module->version() != NULL) {
2846 module_version = StringTable::intern(module->version(), CHECK);
2847 } else {
2848 module_version = NULL;
2849 }
2850 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2851 }
2852
2853 if (method() == NULL || !version_matches(method(), version)) {
2854 // The method was redefined, accurate line number information isn't available
2855 java_lang_StackTraceElement::set_fileName(element(), NULL);
2856 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2857 } else {
2858 Symbol* source;
2859 oop source_file;
2860 int line_number;
2861 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2862
2863 java_lang_StackTraceElement::set_fileName(element(), source_file);
2864 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2865 }
2866 }
2867
2868 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2869 InstanceKlass* holder,
2870 int version,
2871 const methodHandle& method,
2872 int bci,
2873 Symbol*& source,
2874 oop& source_file,
2875 int& line_number, TRAPS) {
2876 // Fill in source file name and line number.
2877 source = Backtrace::get_source_file_name(holder, version);
2878 source_file = java_lang_Class::source_file(java_class());
2879 if (source != NULL) {
2880 // Class was not redefined. We can trust its cache if set,
2881 // else we have to initialize it.
2882 if (source_file == NULL) {
2883 source_file = StringTable::intern(source, CHECK);
2884 java_lang_Class::set_source_file(java_class(), source_file);
2885 }
2886 } else {
2887 // Class was redefined. Dump the cache if it was set.
2888 if (source_file != NULL) {
2889 source_file = NULL;
2890 java_lang_Class::set_source_file(java_class(), source_file);
2891 }
2892 }
2893 line_number = Backtrace::get_line_number(method(), bci);
2894 }
2895
2896 #if INCLUDE_JVMCI
2897 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2898 Symbol*& filename, int& line_number, TRAPS) {
2899 ResourceMark rm(THREAD);
2900 HandleMark hm(THREAD);
2901
2902 filename = NULL;
2903 line_number = -1;
2904
2905 oop source_file;
2906 int version = method->constants()->version();
2907 InstanceKlass* holder = method->method_holder();
2908 Handle java_class(THREAD, holder->java_mirror());
2909 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2910 }
2911 #endif // INCLUDE_JVMCI
2912
2913 // java_lang_StackFrameInfo
2914
2915 int java_lang_StackFrameInfo::_memberName_offset;
2916 int java_lang_StackFrameInfo::_bci_offset;
2917 int java_lang_StackFrameInfo::_version_offset;
2918
2919 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2920 macro(_memberName_offset, k, "memberName", object_signature, false); \
2921 macro(_bci_offset, k, "bci", int_signature, false)
2922
2923 void java_lang_StackFrameInfo::compute_offsets() {
2924 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
2925 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2926 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2927 }
2928
2929 #if INCLUDE_CDS
2930 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2931 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2932 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2933 }
2934 #endif
2935
2936 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2937 HandleMark hm(THREAD);
2938 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2939 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2940 // we should expand MemberName::name when Throwable uses StackTrace
2941 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2942 return method;
2943 }
2944
2945 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2946 // set Method* or mid/cpref
2947 HandleMark hm(THREAD);
2948 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2949 InstanceKlass* ik = method->method_holder();
2950 CallInfo info(method(), ik, CHECK);
2951 MethodHandles::init_method_MemberName(mname, info);
2952 // set bci
2953 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2954 // method may be redefined; store the version
2955 int version = method->constants()->version();
2956 assert((jushort)version == version, "version should be short");
2957 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2958 }
2959
2960 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2961 ResourceMark rm(THREAD);
2962 HandleMark hm(THREAD);
2963 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2964 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2965 InstanceKlass* holder = InstanceKlass::cast(clazz);
2966 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2967
2968 short version = stackFrame->short_field(_version_offset);
2969 int bci = stackFrame->int_field(_bci_offset);
2970 Symbol* name = method->name();
2971 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2972 version, bci, name, CHECK);
2973 }
2974
2975 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2976 element->short_field_put(_version_offset, value);
2977 }
2978
2979 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2980 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2981 element->int_field_put(_bci_offset, value);
2982 }
2983
2984 int java_lang_LiveStackFrameInfo::_monitors_offset;
2985 int java_lang_LiveStackFrameInfo::_locals_offset;
2986 int java_lang_LiveStackFrameInfo::_operands_offset;
2987 int java_lang_LiveStackFrameInfo::_mode_offset;
2988
2989 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2990 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2991 macro(_locals_offset, k, "locals", object_array_signature, false); \
2992 macro(_operands_offset, k, "operands", object_array_signature, false); \
2993 macro(_mode_offset, k, "mode", int_signature, false)
2994
2995 void java_lang_LiveStackFrameInfo::compute_offsets() {
2996 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
2997 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2998 }
2999
3000 #if INCLUDE_CDS
3001 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3002 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3003 }
3004 #endif
3005
3006 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3007 element->obj_field_put(_monitors_offset, value);
3008 }
3009
3010 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3011 element->obj_field_put(_locals_offset, value);
3012 }
3013
3014 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3015 element->obj_field_put(_operands_offset, value);
3016 }
3017
3018 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
3019 element->int_field_put(_mode_offset, value);
3020 }
3021
3022
3023 // java_lang_AccessibleObject
3024
3025 int java_lang_reflect_AccessibleObject::_override_offset;
3026
3027 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3028 macro(_override_offset, k, "override", bool_signature, false)
3029
3030 void java_lang_reflect_AccessibleObject::compute_offsets() {
3031 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3032 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3033 }
3034
3035 #if INCLUDE_CDS
3036 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3037 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3038 }
3039 #endif
3040
3041 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3042 return (jboolean) reflect->bool_field(_override_offset);
3043 }
3044
3045 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3046 reflect->bool_field_put(_override_offset, (int) value);
3047 }
3048
3049 // java_lang_reflect_Method
3050
3051 int java_lang_reflect_Method::_clazz_offset;
3052 int java_lang_reflect_Method::_name_offset;
3053 int java_lang_reflect_Method::_returnType_offset;
3054 int java_lang_reflect_Method::_parameterTypes_offset;
3055 int java_lang_reflect_Method::_exceptionTypes_offset;
3056 int java_lang_reflect_Method::_slot_offset;
3057 int java_lang_reflect_Method::_modifiers_offset;
3058 int java_lang_reflect_Method::_signature_offset;
3059 int java_lang_reflect_Method::_annotations_offset;
3060 int java_lang_reflect_Method::_parameter_annotations_offset;
3061 int java_lang_reflect_Method::_annotation_default_offset;
3062
3063 #define METHOD_FIELDS_DO(macro) \
3064 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3065 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3066 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3067 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3068 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3069 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3070 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3071 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3072 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3073 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3074 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3075
3076 void java_lang_reflect_Method::compute_offsets() {
3077 InstanceKlass* k = vmClasses::reflect_Method_klass();
3078 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3079 }
3080
3081 #if INCLUDE_CDS
3082 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3083 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3084 }
3085 #endif
3086
3087 Handle java_lang_reflect_Method::create(TRAPS) {
3088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3089 Klass* klass = vmClasses::reflect_Method_klass();
3090 // This class is eagerly initialized during VM initialization, since we keep a refence
3091 // to one of the methods
3092 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3093 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3094 }
3095
3096 oop java_lang_reflect_Method::clazz(oop reflect) {
3097 return reflect->obj_field(_clazz_offset);
3098 }
3099
3100 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3101 reflect->obj_field_put(_clazz_offset, value);
3102 }
3103
3104 int java_lang_reflect_Method::slot(oop reflect) {
3105 return reflect->int_field(_slot_offset);
3106 }
3107
3108 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3109 reflect->int_field_put(_slot_offset, value);
3110 }
3111
3112 void java_lang_reflect_Method::set_name(oop method, oop value) {
3113 method->obj_field_put(_name_offset, value);
3114 }
3115
3116 oop java_lang_reflect_Method::return_type(oop method) {
3117 return method->obj_field(_returnType_offset);
3118 }
3119
3120 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3121 method->obj_field_put(_returnType_offset, value);
3122 }
3123
3124 oop java_lang_reflect_Method::parameter_types(oop method) {
3125 return method->obj_field(_parameterTypes_offset);
3126 }
3127
3128 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3129 method->obj_field_put(_parameterTypes_offset, value);
3130 }
3131
3132 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3133 method->obj_field_put(_exceptionTypes_offset, value);
3134 }
3135
3136 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3137 method->int_field_put(_modifiers_offset, value);
3138 }
3139
3140 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3141 method->obj_field_put(_signature_offset, value);
3142 }
3143
3144 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3145 method->obj_field_put(_annotations_offset, value);
3146 }
3147
3148 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3149 method->obj_field_put(_parameter_annotations_offset, value);
3150 }
3151
3152 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3153 method->obj_field_put(_annotation_default_offset, value);
3154 }
3155
3156 int java_lang_reflect_Constructor::_clazz_offset;
3157 int java_lang_reflect_Constructor::_parameterTypes_offset;
3158 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3159 int java_lang_reflect_Constructor::_slot_offset;
3160 int java_lang_reflect_Constructor::_modifiers_offset;
3161 int java_lang_reflect_Constructor::_signature_offset;
3162 int java_lang_reflect_Constructor::_annotations_offset;
3163 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3164
3165 #define CONSTRUCTOR_FIELDS_DO(macro) \
3166 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3167 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3168 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3169 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3170 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3171 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3172 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3173 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3174
3175 void java_lang_reflect_Constructor::compute_offsets() {
3176 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3177 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3178 }
3179
3180 #if INCLUDE_CDS
3181 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3182 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3183 }
3184 #endif
3185
3186 Handle java_lang_reflect_Constructor::create(TRAPS) {
3187 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3188 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3189 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3190 InstanceKlass* ik = InstanceKlass::cast(k);
3191 // Ensure it is initialized
3192 ik->initialize(CHECK_NH);
3193 return ik->allocate_instance_handle(THREAD);
3194 }
3195
3196 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3197 return reflect->obj_field(_clazz_offset);
3198 }
3199
3200 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3201 reflect->obj_field_put(_clazz_offset, value);
3202 }
3203
3204 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3205 return constructor->obj_field(_parameterTypes_offset);
3206 }
3207
3208 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3209 constructor->obj_field_put(_parameterTypes_offset, value);
3210 }
3211
3212 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3213 constructor->obj_field_put(_exceptionTypes_offset, value);
3214 }
3215
3216 int java_lang_reflect_Constructor::slot(oop reflect) {
3217 return reflect->int_field(_slot_offset);
3218 }
3219
3220 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3221 reflect->int_field_put(_slot_offset, value);
3222 }
3223
3224 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3225 constructor->int_field_put(_modifiers_offset, value);
3226 }
3227
3228 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3229 constructor->obj_field_put(_signature_offset, value);
3230 }
3231
3232 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3233 constructor->obj_field_put(_annotations_offset, value);
3234 }
3235
3236 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3237 method->obj_field_put(_parameter_annotations_offset, value);
3238 }
3239
3240 int java_lang_reflect_Field::_clazz_offset;
3241 int java_lang_reflect_Field::_name_offset;
3242 int java_lang_reflect_Field::_type_offset;
3243 int java_lang_reflect_Field::_slot_offset;
3244 int java_lang_reflect_Field::_modifiers_offset;
3245 int java_lang_reflect_Field::_trusted_final_offset;
3246 int java_lang_reflect_Field::_signature_offset;
3247 int java_lang_reflect_Field::_annotations_offset;
3248
3249 #define FIELD_FIELDS_DO(macro) \
3250 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3251 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3252 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3253 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3254 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3255 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3256 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3257 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3258
3259 void java_lang_reflect_Field::compute_offsets() {
3260 InstanceKlass* k = vmClasses::reflect_Field_klass();
3261 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3262 }
3263
3264 #if INCLUDE_CDS
3265 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3266 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3267 }
3268 #endif
3269
3270 Handle java_lang_reflect_Field::create(TRAPS) {
3271 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3272 Symbol* name = vmSymbols::java_lang_reflect_Field();
3273 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3274 InstanceKlass* ik = InstanceKlass::cast(k);
3275 // Ensure it is initialized
3276 ik->initialize(CHECK_NH);
3277 return ik->allocate_instance_handle(THREAD);
3278 }
3279
3280 oop java_lang_reflect_Field::clazz(oop reflect) {
3281 return reflect->obj_field(_clazz_offset);
3282 }
3283
3284 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3285 reflect->obj_field_put(_clazz_offset, value);
3286 }
3287
3288 oop java_lang_reflect_Field::name(oop field) {
3289 return field->obj_field(_name_offset);
3290 }
3291
3292 void java_lang_reflect_Field::set_name(oop field, oop value) {
3293 field->obj_field_put(_name_offset, value);
3294 }
3295
3296 oop java_lang_reflect_Field::type(oop field) {
3297 return field->obj_field(_type_offset);
3298 }
3299
3300 void java_lang_reflect_Field::set_type(oop field, oop value) {
3301 field->obj_field_put(_type_offset, value);
3302 }
3303
3304 int java_lang_reflect_Field::slot(oop reflect) {
3305 return reflect->int_field(_slot_offset);
3306 }
3307
3308 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3309 reflect->int_field_put(_slot_offset, value);
3310 }
3311
3312 int java_lang_reflect_Field::modifiers(oop field) {
3313 return field->int_field(_modifiers_offset);
3314 }
3315
3316 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3317 field->int_field_put(_modifiers_offset, value);
3318 }
3319
3320 void java_lang_reflect_Field::set_trusted_final(oop field) {
3321 field->bool_field_put(_trusted_final_offset, true);
3322 }
3323
3324 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3325 field->obj_field_put(_signature_offset, value);
3326 }
3327
3328 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3329 field->obj_field_put(_annotations_offset, value);
3330 }
3331
3332 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3333 // Allocate java.lang.reflect.RecordComponent instance
3334 HandleMark hm(THREAD);
3335 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3336 assert(ik != NULL, "must be loaded");
3337 ik->initialize(CHECK_NULL);
3338
3339 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3340
3341 Handle decl_class(THREAD, holder->java_mirror());
3342 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3343
3344 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3345 oop component_name = StringTable::intern(name, CHECK_NULL);
3346 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3347
3348 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3349 Handle component_type_h =
3350 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3351 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3352
3353 Method* accessor_method = NULL;
3354 {
3355 // Prepend "()" to type to create the full method signature.
3356 ResourceMark rm(THREAD);
3357 int sig_len = type->utf8_length() + 3; // "()" and null char
3358 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3359 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3360 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3361 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3362 }
3363
3364 if (accessor_method != NULL) {
3365 methodHandle method(THREAD, accessor_method);
3366 oop m = Reflection::new_method(method, false, CHECK_NULL);
3367 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3368 } else {
3369 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3370 }
3371
3372 int sig_index = component->generic_signature_index();
3373 if (sig_index > 0) {
3374 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3375 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3376 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3377 } else {
3378 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3379 }
3380
3381 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3382 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3383
3384 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3385 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3386
3387 return element();
3388 }
3389
3390 int reflect_ConstantPool::_oop_offset;
3391
3392 #define CONSTANTPOOL_FIELDS_DO(macro) \
3393 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3394
3395 void reflect_ConstantPool::compute_offsets() {
3396 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3397 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3398 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3399 }
3400
3401 #if INCLUDE_CDS
3402 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3403 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3404 }
3405 #endif
3406
3407 int java_lang_reflect_Parameter::_name_offset;
3408 int java_lang_reflect_Parameter::_modifiers_offset;
3409 int java_lang_reflect_Parameter::_index_offset;
3410 int java_lang_reflect_Parameter::_executable_offset;
3411
3412 #define PARAMETER_FIELDS_DO(macro) \
3413 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3414 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3415 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3416 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3417
3418 void java_lang_reflect_Parameter::compute_offsets() {
3419 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3420 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3421 }
3422
3423 #if INCLUDE_CDS
3424 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3425 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3426 }
3427 #endif
3428
3429 Handle java_lang_reflect_Parameter::create(TRAPS) {
3430 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3431 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3432 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3433 InstanceKlass* ik = InstanceKlass::cast(k);
3434 // Ensure it is initialized
3435 ik->initialize(CHECK_NH);
3436 return ik->allocate_instance_handle(THREAD);
3437 }
3438
3439 oop java_lang_reflect_Parameter::name(oop param) {
3440 return param->obj_field(_name_offset);
3441 }
3442
3443 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3444 param->obj_field_put(_name_offset, value);
3445 }
3446
3447 int java_lang_reflect_Parameter::modifiers(oop param) {
3448 return param->int_field(_modifiers_offset);
3449 }
3450
3451 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3452 param->int_field_put(_modifiers_offset, value);
3453 }
3454
3455 int java_lang_reflect_Parameter::index(oop param) {
3456 return param->int_field(_index_offset);
3457 }
3458
3459 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3460 param->int_field_put(_index_offset, value);
3461 }
3462
3463 oop java_lang_reflect_Parameter::executable(oop param) {
3464 return param->obj_field(_executable_offset);
3465 }
3466
3467 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3468 param->obj_field_put(_executable_offset, value);
3469 }
3470
3471 // java_lang_Module
3472
3473 int java_lang_Module::_loader_offset;
3474 int java_lang_Module::_name_offset;
3475 int java_lang_Module::_module_entry_offset;
3476
3477 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3478 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3479 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3480 vmSymbols::java_lang_module_init_signature(),
3481 loader, module_name, CHECK_NH);
3482 }
3483
3484 #define MODULE_FIELDS_DO(macro) \
3485 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3486 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3487
3488 void java_lang_Module::compute_offsets() {
3489 InstanceKlass* k = vmClasses::Module_klass();
3490 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3491 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3492 }
3493
3494 #if INCLUDE_CDS
3495 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3496 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3497 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3498 }
3499 #endif
3500
3501 oop java_lang_Module::loader(oop module) {
3502 return module->obj_field(_loader_offset);
3503 }
3504
3505 void java_lang_Module::set_loader(oop module, oop value) {
3506 module->obj_field_put(_loader_offset, value);
3507 }
3508
3509 oop java_lang_Module::name(oop module) {
3510 return module->obj_field(_name_offset);
3511 }
3512
3513 void java_lang_Module::set_name(oop module, oop value) {
3514 module->obj_field_put(_name_offset, value);
3515 }
3516
3517 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3518 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3519 assert(module != NULL, "module can't be null");
3520 assert(oopDesc::is_oop(module), "module must be oop");
3521
3522 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3523 return module_entry;
3524 }
3525
3526 ModuleEntry* java_lang_Module::module_entry(oop module) {
3527 ModuleEntry* module_entry = module_entry_raw(module);
3528 if (module_entry == NULL) {
3529 // If the inject field containing the ModuleEntry* is null then return the
3530 // class loader's unnamed module.
3531 oop loader = java_lang_Module::loader(module);
3532 Handle h_loader = Handle(Thread::current(), loader);
3533 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3534 return loader_cld->unnamed_module();
3535 }
3536 return module_entry;
3537 }
3538
3539 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3540 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3541 assert(module != NULL, "module can't be null");
3542 assert(oopDesc::is_oop(module), "module must be oop");
3543 module->address_field_put(_module_entry_offset, (address)module_entry);
3544 }
3545
3546 Handle reflect_ConstantPool::create(TRAPS) {
3547 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3548 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3549 // Ensure it is initialized
3550 k->initialize(CHECK_NH);
3551 return k->allocate_instance_handle(THREAD);
3552 }
3553
3554
3555 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3556 oop mirror = value->pool_holder()->java_mirror();
3557 // Save the mirror to get back the constant pool.
3558 reflect->obj_field_put(_oop_offset, mirror);
3559 }
3560
3561 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3562
3563 oop mirror = reflect->obj_field(_oop_offset);
3564 Klass* k = java_lang_Class::as_Klass(mirror);
3565 assert(k->is_instance_klass(), "Must be");
3566
3567 // Get the constant pool back from the klass. Since class redefinition
3568 // merges the new constant pool into the old, this is essentially the
3569 // same constant pool as the original. If constant pool merging is
3570 // no longer done in the future, this will have to change to save
3571 // the original.
3572 return InstanceKlass::cast(k)->constants();
3573 }
3574
3575 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3576
3577 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3578 macro(_base_offset, k, "base", object_signature, false)
3579
3580 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3581 InstanceKlass* k = vmClasses::reflect_UnsafeStaticFieldAccessorImpl_klass();
3582 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3583 }
3584
3585 #if INCLUDE_CDS
3586 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3587 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3588 }
3589 #endif
3590
3591 // Support for java_lang_ref_Reference
3592
3593 bool java_lang_ref_Reference::_offsets_initialized;
3594
3595 int java_lang_ref_Reference::_referent_offset;
3596 int java_lang_ref_Reference::_queue_offset;
3597 int java_lang_ref_Reference::_next_offset;
3598 int java_lang_ref_Reference::_discovered_offset;
3599
3600 #define REFERENCE_FIELDS_DO(macro) \
3601 macro(_referent_offset, k, "referent", object_signature, false); \
3602 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3603 macro(_next_offset, k, "next", reference_signature, false); \
3604 macro(_discovered_offset, k, "discovered", reference_signature, false);
3605
3606 void java_lang_ref_Reference::compute_offsets() {
3607 if (_offsets_initialized) {
3608 return;
3609 }
3610 _offsets_initialized = true;
3611 InstanceKlass* k = vmClasses::Reference_klass();
3612 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3613 }
3614
3615 #if INCLUDE_CDS
3616 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3617 f->do_bool(&_offsets_initialized);
3618 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3619 }
3620 #endif
3621
3622 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3623 assert(obj != NULL, "sanity");
3624 if (offset != _referent_offset) {
3625 return false;
3626 }
3627
3628 Klass* k = obj->klass();
3629 if (!k->is_instance_klass()) {
3630 return false;
3631 }
3632
3633 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3634 bool is_reference = ik->reference_type() != REF_NONE;
3635 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3636 return is_reference;
3637 }
3638
3639 int java_lang_boxing_object::_value_offset;
3640 int java_lang_boxing_object::_long_value_offset;
3641
3642 #define BOXING_FIELDS_DO(macro) \
3643 macro(_value_offset, integerKlass, "value", int_signature, false); \
3644 macro(_long_value_offset, longKlass, "value", long_signature, false);
3645
3646 void java_lang_boxing_object::compute_offsets() {
3647 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3648 InstanceKlass* longKlass = vmClasses::Long_klass();
3649 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3650 }
3651
3652 #if INCLUDE_CDS
3653 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3654 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3655 }
3656 #endif
3657
3658 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3659 Klass* k = vmClasses::box_klass(type);
3660 if (k == NULL) return NULL;
3661 InstanceKlass* ik = InstanceKlass::cast(k);
3662 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3663 return ik->allocate_instance(THREAD);
3664 }
3665
3666
3667 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3668 oop box = initialize_and_allocate(type, CHECK_NULL);
3669 if (box == NULL) return NULL;
3670 switch (type) {
3671 case T_BOOLEAN:
3672 box->bool_field_put(_value_offset, value->z);
3673 break;
3674 case T_CHAR:
3675 box->char_field_put(_value_offset, value->c);
3676 break;
3677 case T_FLOAT:
3678 box->float_field_put(_value_offset, value->f);
3679 break;
3680 case T_DOUBLE:
3681 box->double_field_put(_long_value_offset, value->d);
3682 break;
3683 case T_BYTE:
3684 box->byte_field_put(_value_offset, value->b);
3685 break;
3686 case T_SHORT:
3687 box->short_field_put(_value_offset, value->s);
3688 break;
3689 case T_INT:
3690 box->int_field_put(_value_offset, value->i);
3691 break;
3692 case T_LONG:
3693 box->long_field_put(_long_value_offset, value->j);
3694 break;
3695 default:
3696 return NULL;
3697 }
3698 return box;
3699 }
3700
3701
3702 BasicType java_lang_boxing_object::basic_type(oop box) {
3703 if (box == NULL) return T_ILLEGAL;
3704 BasicType type = vmClasses::box_klass_type(box->klass());
3705 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3706 return T_ILLEGAL;
3707 return type;
3708 }
3709
3710
3711 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3712 BasicType type = vmClasses::box_klass_type(box->klass());
3713 switch (type) {
3714 case T_BOOLEAN:
3715 value->z = box->bool_field(_value_offset);
3716 break;
3717 case T_CHAR:
3718 value->c = box->char_field(_value_offset);
3719 break;
3720 case T_FLOAT:
3721 value->f = box->float_field(_value_offset);
3722 break;
3723 case T_DOUBLE:
3724 value->d = box->double_field(_long_value_offset);
3725 break;
3726 case T_BYTE:
3727 value->b = box->byte_field(_value_offset);
3728 break;
3729 case T_SHORT:
3730 value->s = box->short_field(_value_offset);
3731 break;
3732 case T_INT:
3733 value->i = box->int_field(_value_offset);
3734 break;
3735 case T_LONG:
3736 value->j = box->long_field(_long_value_offset);
3737 break;
3738 default:
3739 return T_ILLEGAL;
3740 } // end switch
3741 return type;
3742 }
3743
3744
3745 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3746 BasicType type = vmClasses::box_klass_type(box->klass());
3747 switch (type) {
3748 case T_BOOLEAN:
3749 box->bool_field_put(_value_offset, value->z);
3750 break;
3751 case T_CHAR:
3752 box->char_field_put(_value_offset, value->c);
3753 break;
3754 case T_FLOAT:
3755 box->float_field_put(_value_offset, value->f);
3756 break;
3757 case T_DOUBLE:
3758 box->double_field_put(_long_value_offset, value->d);
3759 break;
3760 case T_BYTE:
3761 box->byte_field_put(_value_offset, value->b);
3762 break;
3763 case T_SHORT:
3764 box->short_field_put(_value_offset, value->s);
3765 break;
3766 case T_INT:
3767 box->int_field_put(_value_offset, value->i);
3768 break;
3769 case T_LONG:
3770 box->long_field_put(_long_value_offset, value->j);
3771 break;
3772 default:
3773 return T_ILLEGAL;
3774 } // end switch
3775 return type;
3776 }
3777
3778
3779 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3780 switch (type) {
3781 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3782 case T_CHAR: st->print("%d", value->c); break;
3783 case T_BYTE: st->print("%d", value->b); break;
3784 case T_SHORT: st->print("%d", value->s); break;
3785 case T_INT: st->print("%d", value->i); break;
3786 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3787 case T_FLOAT: st->print("%f", value->f); break;
3788 case T_DOUBLE: st->print("%lf", value->d); break;
3789 default: st->print("type %d?", type); break;
3790 }
3791 }
3792
3793
3794 // Support for java_lang_ref_SoftReference
3795 //
3796
3797 int java_lang_ref_SoftReference::_timestamp_offset;
3798 int java_lang_ref_SoftReference::_static_clock_offset;
3799
3800 #define SOFTREFERENCE_FIELDS_DO(macro) \
3801 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3802 macro(_static_clock_offset, k, "clock", long_signature, true)
3803
3804 void java_lang_ref_SoftReference::compute_offsets() {
3805 InstanceKlass* k = vmClasses::SoftReference_klass();
3806 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3807 }
3808
3809 #if INCLUDE_CDS
3810 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3811 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3812 }
3813 #endif
3814
3815 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3816 return ref->long_field(_timestamp_offset);
3817 }
3818
3819 jlong java_lang_ref_SoftReference::clock() {
3820 InstanceKlass* ik = vmClasses::SoftReference_klass();
3821 oop base = ik->static_field_base_raw();
3822 return base->long_field(_static_clock_offset);
3823 }
3824
3825 void java_lang_ref_SoftReference::set_clock(jlong value) {
3826 InstanceKlass* ik = vmClasses::SoftReference_klass();
3827 oop base = ik->static_field_base_raw();
3828 base->long_field_put(_static_clock_offset, value);
3829 }
3830
3831 // Support for java_lang_invoke_DirectMethodHandle
3832
3833 int java_lang_invoke_DirectMethodHandle::_member_offset;
3834
3835 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3836 oop member_name = NULL;
3837 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3838 "a DirectMethodHandle oop is expected");
3839 return dmh->obj_field(_member_offset);
3840 }
3841
3842 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3843 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3844
3845 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3846 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3847 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3848 }
3849
3850 #if INCLUDE_CDS
3851 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3852 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3853 }
3854 #endif
3855
3856 // Support for java_lang_invoke_MethodHandle
3857
3858 int java_lang_invoke_MethodHandle::_type_offset;
3859 int java_lang_invoke_MethodHandle::_form_offset;
3860
3861 int java_lang_invoke_MemberName::_clazz_offset;
3862 int java_lang_invoke_MemberName::_name_offset;
3863 int java_lang_invoke_MemberName::_type_offset;
3864 int java_lang_invoke_MemberName::_flags_offset;
3865 int java_lang_invoke_MemberName::_method_offset;
3866 int java_lang_invoke_MemberName::_vmindex_offset;
3867
3868 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3869 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3870
3871 int java_lang_invoke_LambdaForm::_vmentry_offset;
3872
3873 #define METHODHANDLE_FIELDS_DO(macro) \
3874 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3875 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3876
3877 void java_lang_invoke_MethodHandle::compute_offsets() {
3878 InstanceKlass* k = vmClasses::MethodHandle_klass();
3879 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3880 }
3881
3882 #if INCLUDE_CDS
3883 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3884 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3885 }
3886 #endif
3887
3888 #define MEMBERNAME_FIELDS_DO(macro) \
3889 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3890 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3891 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3892 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3893 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3894
3895 void java_lang_invoke_MemberName::compute_offsets() {
3896 InstanceKlass* k = vmClasses::MemberName_klass();
3897 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3898 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3899 }
3900
3901 #if INCLUDE_CDS
3902 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3903 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3904 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3905 }
3906 #endif
3907
3908 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3909 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
3910 assert(k != NULL, "jdk mismatch");
3911 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3912 }
3913
3914 #if INCLUDE_CDS
3915 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3916 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3917 }
3918 #endif
3919
3920 #define LAMBDAFORM_FIELDS_DO(macro) \
3921 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3922
3923 void java_lang_invoke_LambdaForm::compute_offsets() {
3924 InstanceKlass* k = vmClasses::LambdaForm_klass();
3925 assert (k != NULL, "jdk mismatch");
3926 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3927 }
3928
3929 #if INCLUDE_CDS
3930 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3931 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3932 }
3933 #endif
3934
3935 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3936 return obj != NULL && is_subclass(obj->klass());
3937 }
3938
3939 int jdk_internal_invoke_NativeEntryPoint::_shadow_space_offset;
3940 int jdk_internal_invoke_NativeEntryPoint::_argMoves_offset;
3941 int jdk_internal_invoke_NativeEntryPoint::_returnMoves_offset;
3942 int jdk_internal_invoke_NativeEntryPoint::_need_transition_offset;
3943 int jdk_internal_invoke_NativeEntryPoint::_method_type_offset;
3944 int jdk_internal_invoke_NativeEntryPoint::_name_offset;
3945
3946 #define NEP_FIELDS_DO(macro) \
3947 macro(_shadow_space_offset, k, "shadowSpace", int_signature, false); \
3948 macro(_argMoves_offset, k, "argMoves", long_array_signature, false); \
3949 macro(_returnMoves_offset, k, "returnMoves", long_array_signature, false); \
3950 macro(_need_transition_offset, k, "needTransition", bool_signature, false); \
3951 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
3952 macro(_name_offset, k, "name", string_signature, false);
3953
3954 bool jdk_internal_invoke_NativeEntryPoint::is_instance(oop obj) {
3955 return obj != NULL && is_subclass(obj->klass());
3956 }
3957
3958 void jdk_internal_invoke_NativeEntryPoint::compute_offsets() {
3959 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
3960 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3961 }
3962
3963 #if INCLUDE_CDS
3964 void jdk_internal_invoke_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
3965 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3966 }
3967 #endif
3968
3969 jint jdk_internal_invoke_NativeEntryPoint::shadow_space(oop entry) {
3970 return entry->int_field(_shadow_space_offset);
3971 }
3972
3973 oop jdk_internal_invoke_NativeEntryPoint::argMoves(oop entry) {
3974 return entry->obj_field(_argMoves_offset);
3975 }
3976
3977 oop jdk_internal_invoke_NativeEntryPoint::returnMoves(oop entry) {
3978 return entry->obj_field(_returnMoves_offset);
3979 }
3980
3981 jboolean jdk_internal_invoke_NativeEntryPoint::need_transition(oop entry) {
3982 return entry->bool_field(_need_transition_offset);
3983 }
3984
3985 oop jdk_internal_invoke_NativeEntryPoint::method_type(oop entry) {
3986 return entry->obj_field(_method_type_offset);
3987 }
3988
3989 oop jdk_internal_invoke_NativeEntryPoint::name(oop entry) {
3990 return entry->obj_field(_name_offset);
3991 }
3992
3993 oop java_lang_invoke_MethodHandle::type(oop mh) {
3994 return mh->obj_field(_type_offset);
3995 }
3996
3997 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3998 mh->obj_field_put(_type_offset, mtype);
3999 }
4000
4001 oop java_lang_invoke_MethodHandle::form(oop mh) {
4002 assert(_form_offset != 0, "");
4003 return mh->obj_field(_form_offset);
4004 }
4005
4006 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4007 assert(_form_offset != 0, "");
4008 mh->obj_field_put(_form_offset, lform);
4009 }
4010
4011 /// MemberName accessors
4012
4013 oop java_lang_invoke_MemberName::clazz(oop mname) {
4014 assert(is_instance(mname), "wrong type");
4015 return mname->obj_field(_clazz_offset);
4016 }
4017
4018 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4019 assert(is_instance(mname), "wrong type");
4020 mname->obj_field_put(_clazz_offset, clazz);
4021 }
4022
4023 oop java_lang_invoke_MemberName::name(oop mname) {
4024 assert(is_instance(mname), "wrong type");
4025 return mname->obj_field(_name_offset);
4026 }
4027
4028 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4029 assert(is_instance(mname), "wrong type");
4030 mname->obj_field_put(_name_offset, name);
4031 }
4032
4033 oop java_lang_invoke_MemberName::type(oop mname) {
4034 assert(is_instance(mname), "wrong type");
4035 return mname->obj_field(_type_offset);
4036 }
4037
4038 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4039 assert(is_instance(mname), "wrong type");
4040 mname->obj_field_put(_type_offset, type);
4041 }
4042
4043 int java_lang_invoke_MemberName::flags(oop mname) {
4044 assert(is_instance(mname), "wrong type");
4045 return mname->int_field(_flags_offset);
4046 }
4047
4048 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4049 assert(is_instance(mname), "wrong type");
4050 mname->int_field_put(_flags_offset, flags);
4051 }
4052
4053
4054 // Return vmtarget from ResolvedMethodName method field through indirection
4055 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4056 assert(is_instance(mname), "wrong type");
4057 oop method = mname->obj_field(_method_offset);
4058 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4059 }
4060
4061 bool java_lang_invoke_MemberName::is_method(oop mname) {
4062 assert(is_instance(mname), "must be MemberName");
4063 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4064 }
4065
4066 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4067 assert(is_instance(mname), "wrong type");
4068 mname->obj_field_put(_method_offset, resolved_method);
4069 }
4070
4071 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4072 assert(is_instance(mname), "wrong type");
4073 return (intptr_t) mname->address_field(_vmindex_offset);
4074 }
4075
4076 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4077 assert(is_instance(mname), "wrong type");
4078 mname->address_field_put(_vmindex_offset, (address) index);
4079 }
4080
4081
4082 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4083 assert(is_instance(resolved_method), "wrong type");
4084 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4085 assert(m->is_method(), "must be");
4086 return m;
4087 }
4088
4089 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4090 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4091 assert(is_instance(resolved_method), "wrong type");
4092 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4093 }
4094
4095 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4096 assert(is_instance(resolved_method), "wrong type");
4097 resolved_method->obj_field_put(_vmholder_offset, holder);
4098 }
4099
4100 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4101 const Method* method = m();
4102
4103 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4104 oop resolved_method = ResolvedMethodTable::find_method(method);
4105 if (resolved_method != NULL) {
4106 return resolved_method;
4107 }
4108
4109 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4110 if (!k->is_initialized()) {
4111 k->initialize(CHECK_NULL);
4112 }
4113
4114 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4115
4116 NoSafepointVerifier nsv;
4117
4118 if (method->is_old()) {
4119 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4120 method->get_new_method();
4121 }
4122
4123 InstanceKlass* holder = method->method_holder();
4124
4125 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4126 // Add a reference to the loader (actually mirror because hidden classes may not have
4127 // distinct loaders) to ensure the metadata is kept alive.
4128 // This mirror may be different than the one in clazz field.
4129 set_vmholder(new_resolved_method, holder->java_mirror());
4130
4131 // Set flag in class to indicate this InstanceKlass has entries in the table
4132 // to avoid walking table during redefinition if none of the redefined classes
4133 // have any membernames in the table.
4134 holder->set_has_resolved_methods();
4135
4136 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4137 }
4138
4139 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4140 assert(is_instance(lform), "wrong type");
4141 return lform->obj_field(_vmentry_offset);
4142 }
4143
4144
4145 // Support for java_lang_invoke_MethodType
4146
4147 int java_lang_invoke_MethodType::_rtype_offset;
4148 int java_lang_invoke_MethodType::_ptypes_offset;
4149
4150 #define METHODTYPE_FIELDS_DO(macro) \
4151 macro(_rtype_offset, k, "rtype", class_signature, false); \
4152 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4153
4154 void java_lang_invoke_MethodType::compute_offsets() {
4155 InstanceKlass* k = vmClasses::MethodType_klass();
4156 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4157 }
4158
4159 #if INCLUDE_CDS
4160 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4161 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4162 }
4163 #endif
4164
4165 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4166 st->print("(");
4167 objArrayOop pts = ptypes(mt);
4168 for (int i = 0, limit = pts->length(); i < limit; i++) {
4169 java_lang_Class::print_signature(pts->obj_at(i), st);
4170 }
4171 st->print(")");
4172 java_lang_Class::print_signature(rtype(mt), st);
4173 }
4174
4175 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4176 ResourceMark rm;
4177 stringStream buffer(128);
4178 print_signature(mt, &buffer);
4179 const char* sigstr = buffer.base();
4180 int siglen = (int) buffer.size();
4181 Symbol *name;
4182 if (!intern_if_not_found) {
4183 name = SymbolTable::probe(sigstr, siglen);
4184 } else {
4185 name = SymbolTable::new_symbol(sigstr, siglen);
4186 }
4187 return name;
4188 }
4189
4190 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4191 if (mt1 == mt2)
4192 return true;
4193 if (rtype(mt1) != rtype(mt2))
4194 return false;
4195 if (ptype_count(mt1) != ptype_count(mt2))
4196 return false;
4197 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4198 if (ptype(mt1, i) != ptype(mt2, i))
4199 return false;
4200 }
4201 return true;
4202 }
4203
4204 oop java_lang_invoke_MethodType::rtype(oop mt) {
4205 assert(is_instance(mt), "must be a MethodType");
4206 return mt->obj_field(_rtype_offset);
4207 }
4208
4209 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4210 assert(is_instance(mt), "must be a MethodType");
4211 return (objArrayOop) mt->obj_field(_ptypes_offset);
4212 }
4213
4214 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4215 return ptypes(mt)->obj_at(idx);
4216 }
4217
4218 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4219 return ptypes(mt)->length();
4220 }
4221
4222 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4223 objArrayOop pts = ptypes(mt);
4224 int count = pts->length();
4225 int slots = 0;
4226 for (int i = 0; i < count; i++) {
4227 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4228 slots += type2size[bt];
4229 }
4230 return slots;
4231 }
4232
4233 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4234 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4235 return type2size[bt];
4236 }
4237
4238
4239 // Support for java_lang_invoke_CallSite
4240
4241 int java_lang_invoke_CallSite::_target_offset;
4242 int java_lang_invoke_CallSite::_context_offset;
4243
4244 #define CALLSITE_FIELDS_DO(macro) \
4245 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4246 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4247
4248 void java_lang_invoke_CallSite::compute_offsets() {
4249 InstanceKlass* k = vmClasses::CallSite_klass();
4250 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4251 }
4252
4253 #if INCLUDE_CDS
4254 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4255 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4256 }
4257 #endif
4258
4259 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4260 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4261
4262 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4263 return dep_oop;
4264 }
4265
4266 // Support for java_lang_invoke_ConstantCallSite
4267
4268 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4269
4270 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4271 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4272
4273 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4274 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4275 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4276 }
4277
4278 #if INCLUDE_CDS
4279 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4280 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4281 }
4282 #endif
4283
4284 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4285
4286 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4287 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4288
4289 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4290 InstanceKlass* k = vmClasses::Context_klass();
4291 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4292 }
4293
4294 #if INCLUDE_CDS
4295 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4296 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4297 }
4298 #endif
4299
4300 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4301 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4302 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4303 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4304 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4305 return dep_ctx;
4306 }
4307
4308 // Support for java_security_AccessControlContext
4309
4310 int java_security_AccessControlContext::_context_offset;
4311 int java_security_AccessControlContext::_privilegedContext_offset;
4312 int java_security_AccessControlContext::_isPrivileged_offset;
4313 int java_security_AccessControlContext::_isAuthorized_offset;
4314
4315 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4316 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4317 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4318 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4319 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4320
4321 void java_security_AccessControlContext::compute_offsets() {
4322 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4323 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4324 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4325 }
4326
4327 #if INCLUDE_CDS
4328 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4329 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4330 }
4331 #endif
4332
4333 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4334 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4335 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4336 // Ensure klass is initialized
4337 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4338 // Allocate result
4339 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4340 // Fill in values
4341 result->obj_field_put(_context_offset, context());
4342 result->obj_field_put(_privilegedContext_offset, privileged_context());
4343 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4344 result->bool_field_put(_isAuthorized_offset, true);
4345 return result;
4346 }
4347
4348
4349 // Support for java_lang_ClassLoader
4350
4351 int java_lang_ClassLoader::_loader_data_offset;
4352 int java_lang_ClassLoader::_parallelCapable_offset;
4353 int java_lang_ClassLoader::_name_offset;
4354 int java_lang_ClassLoader::_nameAndId_offset;
4355 int java_lang_ClassLoader::_unnamedModule_offset;
4356 int java_lang_ClassLoader::_parent_offset;
4357
4358 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4359 assert(loader != NULL, "loader must not be NULL");
4360 assert(oopDesc::is_oop(loader), "loader must be oop");
4361 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4362 }
4363
4364 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4365 assert(loader != NULL, "loader must not be NULL");
4366 assert(oopDesc::is_oop(loader), "loader must be oop");
4367 return HeapAccess<>::load_at(loader, _loader_data_offset);
4368 }
4369
4370 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4371 assert(loader != NULL, "loader must not be NULL");
4372 assert(oopDesc::is_oop(loader), "loader must be oop");
4373 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4374 }
4375
4376 #define CLASSLOADER_FIELDS_DO(macro) \
4377 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4378 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4379 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4380 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4381 macro(_parent_offset, k1, "parent", classloader_signature, false)
4382
4383 void java_lang_ClassLoader::compute_offsets() {
4384 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4385 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4386
4387 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4388 }
4389
4390 #if INCLUDE_CDS
4391 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4392 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4393 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4394 }
4395 #endif
4396
4397 oop java_lang_ClassLoader::parent(oop loader) {
4398 assert(is_instance(loader), "loader must be oop");
4399 return loader->obj_field(_parent_offset);
4400 }
4401
4402 // Returns the name field of this class loader. If the name field has not
4403 // been set, null will be returned.
4404 oop java_lang_ClassLoader::name(oop loader) {
4405 assert(is_instance(loader), "loader must be oop");
4406 return loader->obj_field(_name_offset);
4407 }
4408
4409 // Returns the nameAndId field of this class loader. The format is
4410 // as follows:
4411 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4412 // If the defining loader has no name then <qualified-class-name> @<id>
4413 // If built-in loader, then omit '@<id>' as there is only one instance.
4414 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4415 oop java_lang_ClassLoader::nameAndId(oop loader) {
4416 assert(is_instance(loader), "loader must be oop");
4417 return loader->obj_field(_nameAndId_offset);
4418 }
4419
4420 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4421 assert(is_instance(loader), "loader must be oop");
4422 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4423 oop acl = loader;
4424 debug_only(jint loop_count = 0);
4425 // This loop taken verbatim from ClassLoader.java:
4426 do {
4427 acl = parent(acl);
4428 if (cl == acl) {
4429 return true;
4430 }
4431 assert(++loop_count > 0, "loop_count overflow");
4432 } while (acl != NULL);
4433 return false;
4434 }
4435
4436 bool java_lang_ClassLoader::is_instance(oop obj) {
4437 return obj != NULL && is_subclass(obj->klass());
4438 }
4439
4440
4441 // For class loader classes, parallelCapable defined
4442 // based on non-null field
4443 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4444 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4445 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4446 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4447 }
4448
4449 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4450 // Fix for 4474172; see evaluation for more details
4451 loader = non_reflection_class_loader(loader);
4452
4453 oop cl = SystemDictionary::java_system_loader();
4454 while(cl != NULL) {
4455 if (cl == loader) return true;
4456 cl = parent(cl);
4457 }
4458 return false;
4459 }
4460
4461 // Return true if this is one of the class loaders associated with
4462 // the generated bytecodes for reflection.
4463 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4464 if (loader != NULL) {
4465 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4466 // This might be null in non-1.4 JDKs
4467 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4468 }
4469 return false;
4470 }
4471
4472 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4473 // See whether this is one of the class loaders associated with
4474 // the generated bytecodes for reflection, and if so, "magically"
4475 // delegate to its parent to prevent class loading from occurring
4476 // in places where applications using reflection didn't expect it.
4477 if (is_reflection_class_loader(loader)) {
4478 return parent(loader);
4479 }
4480 return loader;
4481 }
4482
4483 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4484 assert(is_instance(loader), "loader must be oop");
4485 return loader->obj_field(_unnamedModule_offset);
4486 }
4487
4488 // Support for java_lang_System
4489 //
4490
4491 int java_lang_System::_static_in_offset;
4492 int java_lang_System::_static_out_offset;
4493 int java_lang_System::_static_err_offset;
4494 int java_lang_System::_static_security_offset;
4495 int java_lang_System::_static_allow_security_offset;
4496 int java_lang_System::_static_never_offset;
4497
4498 #define SYSTEM_FIELDS_DO(macro) \
4499 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4500 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4501 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4502 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4503 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4504 macro(_static_never_offset, k, "NEVER", int_signature, true)
4505
4506 void java_lang_System::compute_offsets() {
4507 InstanceKlass* k = vmClasses::System_klass();
4508 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4509 }
4510
4511 // This field tells us that a security manager can never be installed so we
4512 // can completely skip populating the ProtectionDomainCacheTable.
4513 bool java_lang_System::allow_security_manager() {
4514 static int initialized = false;
4515 static bool allowed = true; // default
4516 if (!initialized) {
4517 oop base = vmClasses::System_klass()->static_field_base_raw();
4518 int never = base->int_field(_static_never_offset);
4519 allowed = (base->int_field(_static_allow_security_offset) != never);
4520 initialized = true;
4521 }
4522 return allowed;
4523 }
4524
4525 // This field tells us that a security manager is installed.
4526 bool java_lang_System::has_security_manager() {
4527 oop base = vmClasses::System_klass()->static_field_base_raw();
4528 return base->obj_field(_static_security_offset) != NULL;
4529 }
4530
4531 #if INCLUDE_CDS
4532 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4533 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4534 }
4535 #endif
4536
4537 // Support for jdk_internal_misc_UnsafeConstants
4538 //
4539 class UnsafeConstantsFixup : public FieldClosure {
4540 private:
4541 int _address_size;
4542 int _page_size;
4543 bool _big_endian;
4544 bool _use_unaligned_access;
4545 int _data_cache_line_flush_size;
4546 public:
4547 UnsafeConstantsFixup() {
4548 // round up values for all static final fields
4549 _address_size = sizeof(void*);
4550 _page_size = os::vm_page_size();
4551 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4552 _use_unaligned_access = UseUnalignedAccesses;
4553 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4554 }
4555
4556 void do_field(fieldDescriptor* fd) {
4557 oop mirror = fd->field_holder()->java_mirror();
4558 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4559 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4560 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4561 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4562 if (fd->name() == vmSymbols::address_size_name()) {
4563 mirror->int_field_put(fd->offset(), _address_size);
4564 } else if (fd->name() == vmSymbols::page_size_name()) {
4565 mirror->int_field_put(fd->offset(), _page_size);
4566 } else if (fd->name() == vmSymbols::big_endian_name()) {
4567 mirror->bool_field_put(fd->offset(), _big_endian);
4568 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4569 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4570 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4571 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4572 } else {
4573 assert(false, "unexpected UnsafeConstants field");
4574 }
4575 }
4576 };
4577
4578 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4579 UnsafeConstantsFixup fixup;
4580 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4581 }
4582
4583
4584 // java_lang_StackTraceElement
4585
4586 int java_lang_StackTraceElement::_methodName_offset;
4587 int java_lang_StackTraceElement::_fileName_offset;
4588 int java_lang_StackTraceElement::_lineNumber_offset;
4589 int java_lang_StackTraceElement::_moduleName_offset;
4590 int java_lang_StackTraceElement::_moduleVersion_offset;
4591 int java_lang_StackTraceElement::_classLoaderName_offset;
4592 int java_lang_StackTraceElement::_declaringClass_offset;
4593 int java_lang_StackTraceElement::_declaringClassObject_offset;
4594
4595 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4596 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4597 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4598 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4599 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4600 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4601 macro(_methodName_offset, k, "methodName", string_signature, false); \
4602 macro(_fileName_offset, k, "fileName", string_signature, false); \
4603 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4604
4605 // Support for java_lang_StackTraceElement
4606 void java_lang_StackTraceElement::compute_offsets() {
4607 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4608 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4609 }
4610
4611 #if INCLUDE_CDS
4612 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4613 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4614 }
4615 #endif
4616
4617 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4618 element->obj_field_put(_fileName_offset, value);
4619 }
4620
4621 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4622 element->obj_field_put(_declaringClass_offset, value);
4623 }
4624
4625 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4626 element->obj_field_put(_methodName_offset, value);
4627 }
4628
4629 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4630 element->int_field_put(_lineNumber_offset, value);
4631 }
4632
4633 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4634 element->obj_field_put(_moduleName_offset, value);
4635 }
4636
4637 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4638 element->obj_field_put(_moduleVersion_offset, value);
4639 }
4640
4641 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4642 element->obj_field_put(_classLoaderName_offset, value);
4643 }
4644
4645 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4646 element->obj_field_put(_declaringClassObject_offset, value);
4647 }
4648
4649
4650 // java_lang_AssertionStatusDirectives
4651
4652 int java_lang_AssertionStatusDirectives::_classes_offset;
4653 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4654 int java_lang_AssertionStatusDirectives::_packages_offset;
4655 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4656 int java_lang_AssertionStatusDirectives::_deflt_offset;
4657
4658 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4659 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4660 macro(_classes_offset, k, "classes", string_array_signature, false); \
4661 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4662 macro(_packages_offset, k, "packages", string_array_signature, false); \
4663 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4664 macro(_deflt_offset, k, "deflt", bool_signature, false)
4665
4666 void java_lang_AssertionStatusDirectives::compute_offsets() {
4667 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4668 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4669 }
4670
4671 #if INCLUDE_CDS
4672 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4673 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4674 }
4675 #endif
4676
4677 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4678 o->obj_field_put(_classes_offset, val);
4679 }
4680
4681 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4682 o->obj_field_put(_classEnabled_offset, val);
4683 }
4684
4685 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4686 o->obj_field_put(_packages_offset, val);
4687 }
4688
4689 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4690 o->obj_field_put(_packageEnabled_offset, val);
4691 }
4692
4693 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4694 o->bool_field_put(_deflt_offset, val);
4695 }
4696
4697 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4698
4699 #define AOS_FIELDS_DO(macro) \
4700 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4701
4702 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4703 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4704 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4705 }
4706
4707 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4708 assert(_owner_offset != 0, "Must be initialized");
4709 return obj->obj_field(_owner_offset);
4710 }
4711
4712 #if INCLUDE_CDS
4713 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4714 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4715 }
4716 #endif
4717
4718 int vector_VectorPayload::_payload_offset;
4719
4720 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4721 macro(_payload_offset, k, "payload", object_signature, false)
4722
4723 void vector_VectorPayload::compute_offsets() {
4724 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
4725 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4726 }
4727
4728 #if INCLUDE_CDS
4729 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
4730 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4731 }
4732 #endif
4733
4734 void vector_VectorPayload::set_payload(oop o, oop val) {
4735 o->obj_field_put(_payload_offset, val);
4736 }
4737
4738 bool vector_VectorPayload::is_instance(oop obj) {
4739 return obj != NULL && is_subclass(obj->klass());
4740 }
4741
4742 int java_lang_Integer_IntegerCache::_static_cache_offset;
4743 int java_lang_Long_LongCache::_static_cache_offset;
4744 int java_lang_Character_CharacterCache::_static_cache_offset;
4745 int java_lang_Short_ShortCache::_static_cache_offset;
4746 int java_lang_Byte_ByteCache::_static_cache_offset;
4747
4748 #define INTEGER_CACHE_FIELDS_DO(macro) \
4749 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4750
4751 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4752 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4753 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4754 }
4755
4756 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4757 oop base = ik->static_field_base_raw();
4758 return objArrayOop(base->obj_field(_static_cache_offset));
4759 }
4760
4761 Symbol* java_lang_Integer_IntegerCache::symbol() {
4762 return vmSymbols::java_lang_Integer_IntegerCache();
4763 }
4764
4765 #if INCLUDE_CDS
4766 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4767 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4768 }
4769 #endif
4770 #undef INTEGER_CACHE_FIELDS_DO
4771
4772 jint java_lang_Integer::value(oop obj) {
4773 jvalue v;
4774 java_lang_boxing_object::get_value(obj, &v);
4775 return v.i;
4776 }
4777
4778 #define LONG_CACHE_FIELDS_DO(macro) \
4779 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4780
4781 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4782 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4783 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4784 }
4785
4786 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4787 oop base = ik->static_field_base_raw();
4788 return objArrayOop(base->obj_field(_static_cache_offset));
4789 }
4790
4791 Symbol* java_lang_Long_LongCache::symbol() {
4792 return vmSymbols::java_lang_Long_LongCache();
4793 }
4794
4795 #if INCLUDE_CDS
4796 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4797 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4798 }
4799 #endif
4800 #undef LONG_CACHE_FIELDS_DO
4801
4802 jlong java_lang_Long::value(oop obj) {
4803 jvalue v;
4804 java_lang_boxing_object::get_value(obj, &v);
4805 return v.j;
4806 }
4807
4808 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4809 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4810
4811 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4812 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4813 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4814 }
4815
4816 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4817 oop base = ik->static_field_base_raw();
4818 return objArrayOop(base->obj_field(_static_cache_offset));
4819 }
4820
4821 Symbol* java_lang_Character_CharacterCache::symbol() {
4822 return vmSymbols::java_lang_Character_CharacterCache();
4823 }
4824
4825 #if INCLUDE_CDS
4826 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4827 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4828 }
4829 #endif
4830 #undef CHARACTER_CACHE_FIELDS_DO
4831
4832 jchar java_lang_Character::value(oop obj) {
4833 jvalue v;
4834 java_lang_boxing_object::get_value(obj, &v);
4835 return v.c;
4836 }
4837
4838 #define SHORT_CACHE_FIELDS_DO(macro) \
4839 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4840
4841 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4842 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4843 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4844 }
4845
4846 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4847 oop base = ik->static_field_base_raw();
4848 return objArrayOop(base->obj_field(_static_cache_offset));
4849 }
4850
4851 Symbol* java_lang_Short_ShortCache::symbol() {
4852 return vmSymbols::java_lang_Short_ShortCache();
4853 }
4854
4855 #if INCLUDE_CDS
4856 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4857 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4858 }
4859 #endif
4860 #undef SHORT_CACHE_FIELDS_DO
4861
4862 jshort java_lang_Short::value(oop obj) {
4863 jvalue v;
4864 java_lang_boxing_object::get_value(obj, &v);
4865 return v.s;
4866 }
4867
4868 #define BYTE_CACHE_FIELDS_DO(macro) \
4869 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4870
4871 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4872 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4873 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4874 }
4875
4876 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4877 oop base = ik->static_field_base_raw();
4878 return objArrayOop(base->obj_field(_static_cache_offset));
4879 }
4880
4881 Symbol* java_lang_Byte_ByteCache::symbol() {
4882 return vmSymbols::java_lang_Byte_ByteCache();
4883 }
4884
4885 #if INCLUDE_CDS
4886 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4887 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4888 }
4889 #endif
4890 #undef BYTE_CACHE_FIELDS_DO
4891
4892 jbyte java_lang_Byte::value(oop obj) {
4893 jvalue v;
4894 java_lang_boxing_object::get_value(obj, &v);
4895 return v.b;
4896 }
4897
4898 int java_lang_Boolean::_static_TRUE_offset;
4899 int java_lang_Boolean::_static_FALSE_offset;
4900
4901 #define BOOLEAN_FIELDS_DO(macro) \
4902 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4903 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4904
4905
4906 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4907 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4908 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4909 }
4910
4911 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4912 oop base = ik->static_field_base_raw();
4913 return base->obj_field(_static_TRUE_offset);
4914 }
4915
4916 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4917 oop base = ik->static_field_base_raw();
4918 return base->obj_field(_static_FALSE_offset);
4919 }
4920
4921 Symbol* java_lang_Boolean::symbol() {
4922 return vmSymbols::java_lang_Boolean();
4923 }
4924
4925 #if INCLUDE_CDS
4926 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4927 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4928 }
4929 #endif
4930 #undef BOOLEAN_CACHE_FIELDS_DO
4931
4932 jboolean java_lang_Boolean::value(oop obj) {
4933 jvalue v;
4934 java_lang_boxing_object::get_value(obj, &v);
4935 return v.z;
4936 }
4937
4938 // java_lang_reflect_RecordComponent
4939
4940 int java_lang_reflect_RecordComponent::_clazz_offset;
4941 int java_lang_reflect_RecordComponent::_name_offset;
4942 int java_lang_reflect_RecordComponent::_type_offset;
4943 int java_lang_reflect_RecordComponent::_accessor_offset;
4944 int java_lang_reflect_RecordComponent::_signature_offset;
4945 int java_lang_reflect_RecordComponent::_annotations_offset;
4946 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4947
4948 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4949 macro(_clazz_offset, k, "clazz", class_signature, false); \
4950 macro(_name_offset, k, "name", string_signature, false); \
4951 macro(_type_offset, k, "type", class_signature, false); \
4952 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4953 macro(_signature_offset, k, "signature", string_signature, false); \
4954 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4955 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4956
4957 // Support for java_lang_reflect_RecordComponent
4958 void java_lang_reflect_RecordComponent::compute_offsets() {
4959 InstanceKlass* k = vmClasses::RecordComponent_klass();
4960 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4961 }
4962
4963 #if INCLUDE_CDS
4964 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4965 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4966 }
4967 #endif
4968
4969 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4970 element->obj_field_put(_clazz_offset, value);
4971 }
4972
4973 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4974 element->obj_field_put(_name_offset, value);
4975 }
4976
4977 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4978 element->obj_field_put(_type_offset, value);
4979 }
4980
4981 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4982 element->obj_field_put(_accessor_offset, value);
4983 }
4984
4985 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4986 element->obj_field_put(_signature_offset, value);
4987 }
4988
4989 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4990 element->obj_field_put(_annotations_offset, value);
4991 }
4992
4993 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4994 element->obj_field_put(_typeAnnotations_offset, value);
4995 }
4996
4997 // java_lang_InternalError
4998 int java_lang_InternalError::_during_unsafe_access_offset;
4999
5000 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5001 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5002 }
5003
5004 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5005 return internal_error->bool_field(_during_unsafe_access_offset);
5006 }
5007
5008 void java_lang_InternalError::compute_offsets() {
5009 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5010 }
5011
5012 #if INCLUDE_CDS
5013 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5014 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5015 }
5016 #endif
5017
5018 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5019
5020 // Compute field offsets of all the classes in this file
5021 void JavaClasses::compute_offsets() {
5022 if (UseSharedSpaces) {
5023 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5024 JvmtiExport::has_early_class_hook_env()),
5025 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5026 // None of the classes used by the rest of this function can be replaced by
5027 // JVMTI ClassFileLoadHook.
5028 // We are safe to use the archived offsets, which have already been restored
5029 // by JavaClasses::serialize_offsets, without computing the offsets again.
5030 return;
5031 }
5032
5033 // We have already called the compute_offsets() of the
5034 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5035 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5036 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5037 }
5038
5039 #if INCLUDE_CDS
5040 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5041
5042 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5043 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5044 }
5045 #endif
5046
5047 #if INCLUDE_CDS_JAVA_HEAP
5048 bool JavaClasses::is_supported_for_archiving(oop obj) {
5049 Klass* klass = obj->klass();
5050
5051 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5052 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5053 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5054 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5055 // So for now we cannot not support these classes for archiving.
5056 //
5057 // These objects typically are not referenced by static fields, but rather by resolved
5058 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5059 klass == vmClasses::ResolvedMethodName_klass() ||
5060 klass == vmClasses::MemberName_klass() ||
5061 klass == vmClasses::Context_klass()) {
5062 return false;
5063 }
5064
5065 return true;
5066 }
5067 #endif
5068
5069 #ifndef PRODUCT
5070
5071 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5072
5073 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5074 const char* field_sig) {
5075 EXCEPTION_MARK;
5076 fieldDescriptor fd;
5077 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5078 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5079 InstanceKlass* ik = InstanceKlass::cast(k);
5080 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5081 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5082 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5083 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5084 return false;
5085 }
5086 if (fd.is_static()) {
5087 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5088 return false;
5089 }
5090 if (fd.offset() == deserialized_offset ) {
5091 return true;
5092 } else {
5093 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5094 klass_name, field_name, deserialized_offset, fd.offset());
5095 return false;
5096 }
5097 }
5098
5099 void JavaClasses::check_offsets() {
5100 bool valid = true;
5101
5102 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5103 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5104
5105 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5106 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5107
5108 // Boxed primitive objects (java_lang_boxing_object)
5109
5110 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5111 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5112 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5113 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5114 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5115 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5116 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5117 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5118
5119 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5120 }
5121
5122 #endif // PRODUCT
5123
5124 int InjectedField::compute_offset() {
5125 InstanceKlass* ik = InstanceKlass::cast(klass());
5126 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5127 if (!may_be_java && !fs.access_flags().is_internal()) {
5128 // Only look at injected fields
5129 continue;
5130 }
5131 if (fs.name() == name() && fs.signature() == signature()) {
5132 return fs.offset();
5133 }
5134 }
5135 ResourceMark rm;
5136 tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
5137 #ifndef PRODUCT
5138 ik->print();
5139 tty->print_cr("all fields:");
5140 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5141 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5142 }
5143 #endif //PRODUCT
5144 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5145 return -1;
5146 }
5147
5148 void javaClasses_init() {
5149 JavaClasses::compute_offsets();
5150 JavaClasses::check_offsets();
5151 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5152 }