1 /*
2 * Copyright (c) 1997, 2024, 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 "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/altHashing.hpp"
32 #include "classfile/classLoaderData.inline.hpp"
33 #include "classfile/javaClasses.inline.hpp"
34 #include "classfile/javaClassesImpl.hpp"
35 #include "classfile/javaThreadStatus.hpp"
36 #include "classfile/moduleEntry.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/debugInfo.hpp"
43 #include "code/dependencyContext.hpp"
44 #include "code/pcDesc.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/interpreter.hpp"
47 #include "interpreter/linkResolver.hpp"
48 #include "jvm.h"
49 #include "logging/log.hpp"
50 #include "logging/logStream.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "memory/resourceArea.hpp"
53 #include "memory/universe.hpp"
54 #include "oops/fieldInfo.hpp"
55 #include "oops/fieldStreams.inline.hpp"
56 #include "oops/instanceKlass.inline.hpp"
57 #include "oops/instanceMirrorKlass.hpp"
58 #include "oops/klass.hpp"
59 #include "oops/klass.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/objArrayKlass.hpp"
62 #include "oops/objArrayOop.inline.hpp"
63 #include "oops/oopCast.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/symbol.hpp"
66 #include "oops/recordComponent.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiExport.hpp"
69 #include "prims/methodHandles.hpp"
70 #include "prims/resolvedMethodTable.hpp"
71 #include "runtime/continuationEntry.inline.hpp"
72 #include "runtime/continuationJavaClasses.inline.hpp"
73 #include "runtime/fieldDescriptor.inline.hpp"
74 #include "runtime/frame.inline.hpp"
75 #include "runtime/handles.inline.hpp"
76 #include "runtime/handshake.hpp"
77 #include "runtime/init.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/java.hpp"
80 #include "runtime/javaCalls.hpp"
81 #include "runtime/javaThread.hpp"
82 #include "runtime/jniHandles.inline.hpp"
83 #include "runtime/reflectionUtils.hpp"
84 #include "runtime/safepoint.hpp"
85 #include "runtime/safepointVerifiers.hpp"
86 #include "runtime/threadSMR.hpp"
87 #include "runtime/vframe.inline.hpp"
88 #include "runtime/vm_version.hpp"
89 #include "utilities/align.hpp"
90 #include "utilities/globalDefinitions.hpp"
91 #include "utilities/growableArray.hpp"
92 #include "utilities/preserveException.hpp"
93 #include "utilities/utf8.hpp"
94 #if INCLUDE_JVMCI
95 #include "jvmci/jvmciJavaClasses.hpp"
96 #endif
97
98 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
99 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
100
101 InjectedField JavaClasses::_injected_fields[] = {
102 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
103 };
104
105 // Register native methods of Object
106 void java_lang_Object::register_natives(TRAPS) {
107 InstanceKlass* obj = vmClasses::Object_klass();
108 Method::register_native(obj, vmSymbols::hashCode_name(),
109 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
110 Method::register_native(obj, vmSymbols::wait_name(),
111 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
112 Method::register_native(obj, vmSymbols::notify_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
114 Method::register_native(obj, vmSymbols::notifyAll_name(),
115 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
116 Method::register_native(obj, vmSymbols::clone_name(),
117 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
118 }
119
120 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
121 return _injected_fields[(int)id].compute_offset();
122 }
123
124 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
125 *field_count = 0;
126
127 vmSymbolID sid = vmSymbols::find_sid(class_name);
128 if (sid == vmSymbolID::NO_SID) {
129 // Only well known classes can inject fields
130 return nullptr;
131 }
132
133 int count = 0;
134 int start = -1;
135
136 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
137 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
138 count++; \
139 if (start == -1) { \
140 start = (int)InjectedFieldID::klass##_##name##_enum; \
141 } \
142 }
143 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
144 #undef LOOKUP_INJECTED_FIELD
145
146 if (start != -1) {
147 *field_count = count;
148 return _injected_fields + start;
149 }
150 return nullptr;
151 }
152
153
154 // Helpful routine for computing field offsets at run time rather than hardcoding them
155 // Finds local fields only, including static fields. Static field offsets are from the
156 // beginning of the mirror.
157 void JavaClasses::compute_offset(int &dest_offset,
158 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
159 bool is_static) {
160 fieldDescriptor fd;
161 if (ik == nullptr) {
162 ResourceMark rm;
163 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
164 vm_exit_during_initialization("Invalid layout of well-known class");
165 }
166
167 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
168 ResourceMark rm;
169 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
170 name_symbol->as_C_string(), signature_symbol->as_C_string());
171 #ifndef PRODUCT
172 // Prints all fields and offsets
173 Log(class) lt;
174 LogStream ls(lt.error());
175 ik->print_on(&ls);
176 #endif //PRODUCT
177 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
178 }
179 dest_offset = fd.offset();
180 }
181
182 // Overloading to pass name as a string.
183 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
184 const char* name_string, Symbol* signature_symbol,
185 bool is_static) {
186 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
187 if (name == nullptr) {
188 ResourceMark rm;
189 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
190 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
191 }
192 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
193 }
194
195 // java_lang_String
196
197 int java_lang_String::_value_offset;
198 int java_lang_String::_hash_offset;
199 int java_lang_String::_hashIsZero_offset;
200 int java_lang_String::_coder_offset;
201 int java_lang_String::_flags_offset;
202
203 bool java_lang_String::_initialized;
204
205
206 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
207 uint8_t* addr = flags_addr(java_string);
208 uint8_t value = Atomic::load(addr);
209 while ((value & flag_mask) == 0) {
210 uint8_t old_value = value;
211 value |= flag_mask;
212 value = Atomic::cmpxchg(addr, old_value, value);
213 if (value == old_value) return false; // Flag bit changed from 0 to 1.
214 }
215 return true; // Flag bit is already 1.
216 }
217
218 #define STRING_FIELDS_DO(macro) \
219 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
220 macro(_hash_offset, k, "hash", int_signature, false); \
221 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
222 macro(_coder_offset, k, "coder", byte_signature, false);
223
224 void java_lang_String::compute_offsets() {
225 if (_initialized) {
226 return;
227 }
228
229 InstanceKlass* k = vmClasses::String_klass();
230 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
231 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
232
233 _initialized = true;
234 }
235
236 #if INCLUDE_CDS
237 void java_lang_String::serialize_offsets(SerializeClosure* f) {
238 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
239 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
240 f->do_bool(&_initialized);
241 }
242 #endif
243
244 class CompactStringsFixup : public FieldClosure {
245 private:
246 bool _value;
247
248 public:
249 CompactStringsFixup(bool value) : _value(value) {}
250
251 void do_field(fieldDescriptor* fd) {
252 if (fd->name() == vmSymbols::compact_strings_name()) {
253 oop mirror = fd->field_holder()->java_mirror();
254 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
255 assert(mirror != nullptr, "String must have mirror already");
256 mirror->bool_field_put(fd->offset(), _value);
257 }
258 }
259 };
260
261 void java_lang_String::set_compact_strings(bool value) {
262 CompactStringsFixup fix(value);
263 vmClasses::String_klass()->do_local_static_fields(&fix);
264 }
265
266 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
267 assert(_initialized, "Must be initialized");
268 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
269
270 // Create the String object first, so there's a chance that the String
271 // and the char array it points to end up in the same cache line.
272 oop obj;
273 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
274
275 // Create the char array. The String object must be handlized here
276 // because GC can happen as a result of the allocation attempt.
277 Handle h_obj(THREAD, obj);
278 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
279 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
280
281 // Point the String at the char array
282 obj = h_obj();
283 set_value(obj, buffer);
284 // No need to zero the offset, allocation zero'ed the entire String object
285 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
286 return h_obj;
287 }
288
289 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
290 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
291 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
292 typeArrayOop buffer = value(h_obj());
293 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
294 if (is_latin1) {
295 for (int index = 0; index < length; index++) {
296 buffer->byte_at_put(index, (jbyte)unicode[index]);
297 }
298 } else {
299 for (int index = 0; index < length; index++) {
300 buffer->char_at_put(index, unicode[index]);
301 }
302 }
303
304 #ifdef ASSERT
305 {
306 ResourceMark rm;
307 size_t utf8_len = static_cast<size_t>(length);
308 char* expected = UNICODE::as_utf8(unicode, utf8_len);
309 char* actual = as_utf8_string(h_obj());
310 if (strcmp(expected, actual) != 0) {
311 fatal("Unicode conversion failure: %s --> %s", expected, actual);
312 }
313 }
314 #endif
315
316 return h_obj;
317 }
318
319 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
320 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
321 return h_obj();
322 }
323
324 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
325 if (utf8_str == nullptr) {
326 return Handle();
327 }
328 bool has_multibyte, is_latin1;
329 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
330 if (!CompactStrings) {
331 has_multibyte = true;
332 is_latin1 = false;
333 }
334
335 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
336 if (length > 0) {
337 if (!has_multibyte) {
338 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
339 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
340 } else if (is_latin1) {
341 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
342 } else {
343 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
344 }
345 }
346
347 #ifdef ASSERT
348 // This check is too strict when the input string is not a valid UTF8.
349 // For example, it may be created with arbitrary content via jni_NewStringUTF.
350 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, strlen(utf8_str), /*version_leq_47*/false)) {
351 ResourceMark rm;
352 const char* expected = utf8_str;
353 char* actual = as_utf8_string(h_obj());
354 if (strcmp(expected, actual) != 0) {
355 fatal("String conversion failure: %s --> %s", expected, actual);
356 }
357 }
358 #endif
359
360 return h_obj;
361 }
362
363 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
364 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
365 return h_obj();
366 }
367
368 Handle java_lang_String::create_from_symbol(const Symbol* symbol, TRAPS) {
369 const char* utf8_str = (char*)symbol->bytes();
370 int utf8_len = symbol->utf8_length();
371
372 bool has_multibyte, is_latin1;
373 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
374 if (!CompactStrings) {
375 has_multibyte = true;
376 is_latin1 = false;
377 }
378
379 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
380 if (length > 0) {
381 if (!has_multibyte) {
382 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
383 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
384 } else if (is_latin1) {
385 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
386 } else {
387 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
388 }
389 }
390
391 #ifdef ASSERT
392 // This check is too strict on older classfile versions
393 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, utf8_len, /*version_leq_47*/false))
394 {
395 ResourceMark rm;
396 const char* expected = symbol->as_utf8();
397 char* actual = as_utf8_string(h_obj());
398 if (strncmp(expected, actual, utf8_len) != 0) {
399 fatal("Symbol conversion failure: %s --> %s", expected, actual);
400 }
401 }
402 #endif
403
404 return h_obj;
405 }
406
407 // Converts a C string to a Java String based on current encoding
408 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
409 assert(str != nullptr, "bad arguments");
410
411 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
412 static to_java_string_fn_t _to_java_string_fn = nullptr;
413
414 if (_to_java_string_fn == nullptr) {
415 void *lib_handle = os::native_java_library();
416 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
417 if (_to_java_string_fn == nullptr) {
418 fatal("JNU_NewStringPlatform missing");
419 }
420 }
421
422 jstring js = nullptr;
423 {
424 JavaThread* thread = THREAD;
425 HandleMark hm(thread);
426 ThreadToNativeFromVM ttn(thread);
427 js = (_to_java_string_fn)(thread->jni_environment(), str);
428 }
429
430 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
431 JNIHandles::destroy_local(js); // destroy local JNIHandle.
432 return native_platform_string;
433 }
434
435 // Converts a Java String to a native C string that can be used for
436 // native OS calls.
437 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
438 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
439 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
440
441 if (_to_platform_string_fn == nullptr) {
442 void *lib_handle = os::native_java_library();
443 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
444 if (_to_platform_string_fn == nullptr) {
445 fatal("GetStringPlatformChars missing");
446 }
447 }
448
449 char *native_platform_string;
450 jstring js;
451 { JavaThread* thread = THREAD;
452 js = (jstring) JNIHandles::make_local(thread, java_string());
453 HandleMark hm(thread);
454 ThreadToNativeFromVM ttn(thread);
455 JNIEnv *env = thread->jni_environment();
456 bool is_copy;
457 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
458 assert(is_copy == JNI_TRUE, "is_copy value changed");
459 }
460
461 // Uses a store barrier and therefore needs to be in vm state
462 JNIHandles::destroy_local(js);
463
464 return native_platform_string;
465 }
466
467 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
468 ResourceMark rm(THREAD);
469 return create_from_str(java_name->as_klass_external_name(), THREAD);
470 }
471
472 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
473 jchar* result = as_unicode_string_or_null(java_string, length);
474 if (result == nullptr) {
475 THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
476 }
477 return result;
478 }
479
480 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
481 typeArrayOop value = java_lang_String::value(java_string);
482 length = java_lang_String::length(java_string, value);
483 bool is_latin1 = java_lang_String::is_latin1(java_string);
484
485 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
486 if (result != nullptr) {
487 if (!is_latin1) {
488 for (int index = 0; index < length; index++) {
489 result[index] = value->char_at(index);
490 }
491 } else {
492 for (int index = 0; index < length; index++) {
493 result[index] = ((jchar) value->byte_at(index)) & 0xff;
494 }
495 }
496 }
497 return result;
498 }
499
500 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
501 // The hash and hashIsZero fields are subject to a benign data race,
502 // making it crucial to ensure that any observable result of the
503 // calculation in this method stays correct under any possible read of
504 // these fields. Necessary restrictions to allow this to be correct
505 // without explicit memory fences or similar concurrency primitives is
506 // that we can ever only write to one of these two fields for a given
507 // String instance, and that the computation is idempotent and derived
508 // from immutable state
509 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
510 if (java_lang_String::hash_is_set(java_string)) {
511 return java_string->int_field(_hash_offset);
512 }
513
514 typeArrayOop value = java_lang_String::value(java_string);
515 int length = java_lang_String::length(java_string, value);
516 bool is_latin1 = java_lang_String::is_latin1(java_string);
517
518 unsigned int hash = 0;
519 if (length > 0) {
520 if (is_latin1) {
521 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
522 } else {
523 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
524 }
525 }
526
527 if (update) {
528 if (hash != 0) {
529 java_string->int_field_put(_hash_offset, hash);
530 } else {
531 java_string->bool_field_put(_hashIsZero_offset, true);
532 }
533 }
534 return hash;
535 }
536
537 unsigned int java_lang_String::hash_code(oop java_string) {
538 return hash_code_impl(java_string, /*update=*/true);
539 }
540
541 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
542 return hash_code_impl(java_string, /*update=*/false);
543 }
544
545
546 char* java_lang_String::as_quoted_ascii(oop java_string) {
547 typeArrayOop value = java_lang_String::value(java_string);
548 int length = java_lang_String::length(java_string, value);
549 bool is_latin1 = java_lang_String::is_latin1(java_string);
550
551 if (length == 0) return nullptr;
552
553 char* result;
554 size_t result_length;
555 if (!is_latin1) {
556 jchar* base = value->char_at_addr(0);
557 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
558 result = NEW_RESOURCE_ARRAY(char, result_length);
559 UNICODE::as_quoted_ascii(base, length, result, result_length);
560 } else {
561 jbyte* base = value->byte_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 }
566 assert(result_length >= (size_t)length + 1, "must not be shorter");
567 assert(result_length == strlen(result) + 1, "must match");
568 return result;
569 }
570
571 Symbol* java_lang_String::as_symbol(oop java_string) {
572 typeArrayOop value = java_lang_String::value(java_string);
573 int length = java_lang_String::length(java_string, value);
574 bool is_latin1 = java_lang_String::is_latin1(java_string);
575 if (!is_latin1) {
576 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
577 Symbol* sym = SymbolTable::new_symbol(base, length);
578 return sym;
579 } else {
580 ResourceMark rm;
581 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
582 size_t utf8_len = static_cast<size_t>(length);
583 const char* base = UNICODE::as_utf8(position, utf8_len);
584 Symbol* sym = SymbolTable::new_symbol(base, checked_cast<int>(utf8_len));
585 return sym;
586 }
587 }
588
589 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
590 typeArrayOop value = java_lang_String::value(java_string);
591 int length = java_lang_String::length(java_string, value);
592 bool is_latin1 = java_lang_String::is_latin1(java_string);
593 if (!is_latin1) {
594 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
595 return SymbolTable::probe_unicode(base, length);
596 } else {
597 ResourceMark rm;
598 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
599 size_t utf8_len = static_cast<size_t>(length);
600 const char* base = UNICODE::as_utf8(position, utf8_len);
601 return SymbolTable::probe(base, checked_cast<int>(utf8_len));
602 }
603 }
604
605 size_t java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
606 assert(value_equals(value, java_lang_String::value(java_string)),
607 "value must be same as java_lang_String::value(java_string)");
608 int length = java_lang_String::length(java_string, value);
609 if (length == 0) {
610 return 0;
611 }
612 if (!java_lang_String::is_latin1(java_string)) {
613 return UNICODE::utf8_length(value->char_at_addr(0), length);
614 } else {
615 return UNICODE::utf8_length(value->byte_at_addr(0), length);
616 }
617 }
618
619 size_t java_lang_String::utf8_length(oop java_string) {
620 typeArrayOop value = java_lang_String::value(java_string);
621 return utf8_length(java_string, value);
622 }
623
624 int java_lang_String::utf8_length_as_int(oop java_string) {
625 typeArrayOop value = java_lang_String::value(java_string);
626 return utf8_length_as_int(java_string, value);
627 }
628
629 int java_lang_String::utf8_length_as_int(oop java_string, typeArrayOop value) {
630 assert(value_equals(value, java_lang_String::value(java_string)),
631 "value must be same as java_lang_String::value(java_string)");
632 int length = java_lang_String::length(java_string, value);
633 if (length == 0) {
634 return 0;
635 }
636 if (!java_lang_String::is_latin1(java_string)) {
637 return UNICODE::utf8_length_as_int(value->char_at_addr(0), length);
638 } else {
639 return UNICODE::utf8_length_as_int(value->byte_at_addr(0), length);
640 }
641 }
642
643 char* java_lang_String::as_utf8_string(oop java_string) {
644 size_t length;
645 return as_utf8_string(java_string, length);
646 }
647
648 char* java_lang_String::as_utf8_string(oop java_string, size_t& length) {
649 typeArrayOop value = java_lang_String::value(java_string);
650 // `length` is used as the incoming number of characters to
651 // convert, and then set as the number of bytes in the UTF8 sequence.
652 length = java_lang_String::length(java_string, value);
653 bool is_latin1 = java_lang_String::is_latin1(java_string);
654 if (!is_latin1) {
655 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
656 return UNICODE::as_utf8(position, length);
657 } else {
658 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
659 return UNICODE::as_utf8(position, length);
660 }
661 }
662
663 // Uses a provided buffer if it's sufficiently large, otherwise allocates
664 // a resource array to fit
665 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& utf8_len) {
666 typeArrayOop value = java_lang_String::value(java_string);
667 int len = java_lang_String::length(java_string, value);
668 bool is_latin1 = java_lang_String::is_latin1(java_string);
669 if (!is_latin1) {
670 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
671 utf8_len = UNICODE::utf8_length(position, len);
672 if (utf8_len >= buflen) {
673 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
674 }
675 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
676 } else {
677 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
678 utf8_len = UNICODE::utf8_length(position, len);
679 if (utf8_len >= buflen) {
680 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
681 }
682 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
683 }
684 }
685
686 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen) {
687 assert(value_equals(value, java_lang_String::value(java_string)),
688 "value must be same as java_lang_String::value(java_string)");
689 int length = java_lang_String::length(java_string, value);
690 bool is_latin1 = java_lang_String::is_latin1(java_string);
691 if (!is_latin1) {
692 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
693 return UNICODE::as_utf8(position, length, buf, buflen);
694 } else {
695 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
696 return UNICODE::as_utf8(position, length, buf, buflen);
697 }
698 }
699
700 char* java_lang_String::as_utf8_string(oop java_string, char* buf, size_t buflen) {
701 typeArrayOop value = java_lang_String::value(java_string);
702 return as_utf8_string(java_string, value, buf, buflen);
703 }
704
705 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
706 // `length` is used as the incoming number of characters to
707 // convert, and then set as the number of bytes in the UTF8 sequence.
708 size_t length = static_cast<size_t>(len);
709 typeArrayOop value = java_lang_String::value(java_string);
710 bool is_latin1 = java_lang_String::is_latin1(java_string);
711 assert(start + len <= java_lang_String::length(java_string), "just checking");
712 if (!is_latin1) {
713 jchar* position = value->char_at_addr(start);
714 return UNICODE::as_utf8(position, length);
715 } else {
716 jbyte* position = value->byte_at_addr(start);
717 return UNICODE::as_utf8(position, length);
718 }
719 }
720
721 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen) {
722 assert(value_equals(value, java_lang_String::value(java_string)),
723 "value must be same as java_lang_String::value(java_string)");
724 assert(start + len <= java_lang_String::length(java_string), "just checking");
725 bool is_latin1 = java_lang_String::is_latin1(java_string);
726 if (!is_latin1) {
727 jchar* position = value->char_at_addr(start);
728 return UNICODE::as_utf8(position, len, buf, buflen);
729 } else {
730 jbyte* position = value->byte_at_addr(start);
731 return UNICODE::as_utf8(position, len, buf, buflen);
732 }
733 }
734
735 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
736 assert(java_string->klass() == vmClasses::String_klass(),
737 "must be java_string");
738 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
739 int length = java_lang_String::length(java_string, value);
740 if (length != len) {
741 return false;
742 }
743 bool is_latin1 = java_lang_String::is_latin1(java_string);
744 if (!is_latin1) {
745 for (int i = 0; i < len; i++) {
746 if (value->char_at(i) != chars[i]) {
747 return false;
748 }
749 }
750 } else {
751 for (int i = 0; i < len; i++) {
752 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
753 return false;
754 }
755 }
756 }
757 return true;
758 }
759
760 bool java_lang_String::equals(oop java_string, const char* utf8_string, size_t utf8_len) {
761 assert(java_string->klass() == vmClasses::String_klass(),
762 "must be java_string");
763 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
764 int length = java_lang_String::length(java_string, value);
765 int unicode_length = UTF8::unicode_length(utf8_string, utf8_len);
766 if (length != unicode_length) {
767 return false;
768 }
769 bool is_latin1 = java_lang_String::is_latin1(java_string);
770 jchar c;
771 if (!is_latin1) {
772 for (int i = 0; i < unicode_length; i++) {
773 utf8_string = UTF8::next(utf8_string, &c);
774 if (value->char_at(i) != c) {
775 return false;
776 }
777 }
778 } else {
779 for (int i = 0; i < unicode_length; i++) {
780 utf8_string = UTF8::next(utf8_string, &c);
781 if ((((jchar) value->byte_at(i)) & 0xff) != c) {
782 return false;
783 }
784 }
785 }
786 return true;
787 }
788
789 bool java_lang_String::equals(oop str1, oop str2) {
790 assert(str1->klass() == vmClasses::String_klass(),
791 "must be java String");
792 assert(str2->klass() == vmClasses::String_klass(),
793 "must be java String");
794 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
795 bool is_latin1 = java_lang_String::is_latin1(str1);
796 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
797 bool is_latin2 = java_lang_String::is_latin1(str2);
798
799 if (is_latin1 != is_latin2) {
800 // Strings with different coders are never equal.
801 return false;
802 }
803 return value_equals(value1, value2);
804 }
805
806 // Print the given string to the given outputStream, limiting the output to
807 // at most max_length of the string's characters. If the length exceeds the
808 // limit we print an abridged version of the string with the "middle" elided
809 // and replaced by " ... (N characters ommitted) ... ". If max_length is odd
810 // it is treated as max_length-1.
811 void java_lang_String::print(oop java_string, outputStream* st, int max_length) {
812 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
813 // We need at least two characters to print A ... B
814 assert(max_length > 1, "invalid max_length: %d", max_length);
815
816 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
817
818 if (value == nullptr) {
819 // This can happen if, e.g., printing a String
820 // object before its initializer has been called
821 st->print("nullptr");
822 return;
823 }
824
825 int length = java_lang_String::length(java_string, value);
826 bool is_latin1 = java_lang_String::is_latin1(java_string);
827
828 bool abridge = length > max_length;
829
830 st->print("\"");
831 for (int index = 0; index < length; index++) {
832 // If we need to abridge and we've printed half the allowed characters
833 // then jump to the tail of the string.
834 if (abridge && index >= max_length / 2) {
835 st->print(" ... (%d characters ommitted) ... ", length - 2 * (max_length / 2));
836 index = length - (max_length / 2);
837 abridge = false; // only do this once
838 }
839 jchar c = (!is_latin1) ? value->char_at(index) :
840 ((jchar) value->byte_at(index)) & 0xff;
841 if (c < ' ') {
842 st->print("\\x%02X", c); // print control characters e.g. \x0A
843 } else {
844 st->print("%c", c);
845 }
846 }
847 st->print("\"");
848
849 if (length > max_length) {
850 st->print(" (abridged) ");
851 }
852 }
853
854 // java_lang_Class
855
856 int java_lang_Class::_klass_offset;
857 int java_lang_Class::_array_klass_offset;
858 int java_lang_Class::_oop_size_offset;
859 int java_lang_Class::_static_oop_field_count_offset;
860 int java_lang_Class::_class_loader_offset;
861 int java_lang_Class::_module_offset;
862 int java_lang_Class::_protection_domain_offset;
863 int java_lang_Class::_component_mirror_offset;
864 int java_lang_Class::_init_lock_offset;
865 int java_lang_Class::_signers_offset;
866 int java_lang_Class::_name_offset;
867 int java_lang_Class::_source_file_offset;
868 int java_lang_Class::_classData_offset;
869 int java_lang_Class::_classRedefinedCount_offset;
870 int java_lang_Class::_reflectionData_offset;
871
872 bool java_lang_Class::_offsets_computed = false;
873 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
874 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
875
876 #ifdef ASSERT
877 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
878 assert(fd->has_initial_value(), "caller should have checked this");
879 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
880 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
881 }
882 #endif
883
884 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
885 DEBUG_ONLY(assert_valid_static_string_field(fd);)
886 oop string = fd->string_initial_value(CHECK);
887 mirror()->obj_field_put(fd->offset(), string);
888 }
889
890 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
891 assert(fd->has_initial_value(), "caller should have checked this");
892 BasicType t = fd->field_type();
893 switch (t) {
894 case T_BYTE:
895 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
896 break;
897 case T_BOOLEAN:
898 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
899 break;
900 case T_CHAR:
901 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
902 break;
903 case T_SHORT:
904 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
905 break;
906 case T_INT:
907 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
908 break;
909 case T_FLOAT:
910 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
911 break;
912 case T_DOUBLE:
913 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
914 break;
915 case T_LONG:
916 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
917 break;
918 default:
919 // Illegal ConstantValue attribute in class file should have been
920 // caught during classfile parsing.
921 ShouldNotReachHere();
922 }
923 }
924
925 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
926 assert(mirror.not_null() && fd->is_static(), "just checking");
927 if (fd->has_initial_value()) {
928 if (fd->field_type() != T_OBJECT) {
929 initialize_static_primitive_field(fd, mirror);
930 } else {
931 initialize_static_string_field(fd, mirror, CHECK);
932 }
933 }
934 }
935
936 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
937 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
938
939 // If the offset was read from the shared archive, it was fixed up already
940 if (!k->is_shared()) {
941 if (k->is_instance_klass()) {
942 // During bootstrap, java.lang.Class wasn't loaded so static field
943 // offsets were computed without the size added it. Go back and
944 // update all the static field offsets to included the size.
945
946 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
947 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
948 // static fields offsets are updated in this array before reencoding everything into
949 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
950
951 int java_fields;
952 int injected_fields;
953 InstanceKlass* ik = InstanceKlass::cast(k);
954 GrowableArray<FieldInfo>* fields =
955 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
956 &java_fields, &injected_fields);
957 for (int i = 0; i < fields->length(); i++) {
958 FieldInfo* fi = fields->adr_at(i);
959 if (fi->access_flags().is_static()) {
960 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
961 }
962 }
963 Array<u1>* old_stream = ik->fieldinfo_stream();
964 assert(fields->length() == (java_fields + injected_fields), "Must be");
965 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
966 ik->set_fieldinfo_stream(new_fis);
967 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
968 }
969 }
970
971 if (k->is_shared() && k->has_archived_mirror_index()) {
972 if (ArchiveHeapLoader::is_in_use()) {
973 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
974 assert(present, "Missing archived mirror for %s", k->external_name());
975 return;
976 } else {
977 k->clear_java_mirror_handle();
978 k->clear_archived_mirror_index();
979 }
980 }
981 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
982 }
983
984 void java_lang_Class::initialize_mirror_fields(Klass* k,
985 Handle mirror,
986 Handle protection_domain,
987 Handle classData,
988 TRAPS) {
989 // Allocate a simple java object for a lock.
990 // This needs to be a java object because during class initialization
991 // it can be held across a java call.
992 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
993 set_init_lock(mirror(), r);
994
995 // Set protection domain also
996 set_protection_domain(mirror(), protection_domain());
997
998 // Initialize static fields
999 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
1000
1001 // Set classData
1002 set_class_data(mirror(), classData());
1003 }
1004
1005 // Set the java.lang.Module module field in the java_lang_Class mirror
1006 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
1007 if (module.is_null()) {
1008 // During startup, the module may be null only if java.base has not been defined yet.
1009 // Put the class on the fixup_module_list to patch later when the java.lang.Module
1010 // for java.base is known. But note that since we captured the null module another
1011 // thread may have completed that initialization.
1012
1013 bool javabase_was_defined = false;
1014 {
1015 MutexLocker m1(current, Module_lock);
1016 // Keep list of classes needing java.base module fixup
1017 if (!ModuleEntryTable::javabase_defined()) {
1018 assert(k->java_mirror() != nullptr, "Class's mirror is null");
1019 k->class_loader_data()->inc_keep_alive_ref_count();
1020 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
1021 fixup_module_field_list()->push(k);
1022 } else {
1023 javabase_was_defined = true;
1024 }
1025 }
1026
1027 // If java.base was already defined then patch this particular class with java.base.
1028 if (javabase_was_defined) {
1029 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
1030 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
1031 "Setting class module field, " JAVA_BASE_NAME " should be defined");
1032 Handle javabase_handle(current, javabase_entry->module());
1033 set_module(mirror(), javabase_handle());
1034 }
1035 } else {
1036 assert(Universe::is_module_initialized() ||
1037 (ModuleEntryTable::javabase_defined() &&
1038 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
1039 "Incorrect java.lang.Module specification while creating mirror");
1040 set_module(mirror(), module());
1041 }
1042 }
1043
1044 // Statically allocate fixup lists because they always get created.
1045 void java_lang_Class::allocate_fixup_lists() {
1046 GrowableArray<Klass*>* mirror_list =
1047 new (mtClass) GrowableArray<Klass*>(40, mtClass);
1048 set_fixup_mirror_list(mirror_list);
1049
1050 GrowableArray<Klass*>* module_list =
1051 new (mtModule) GrowableArray<Klass*>(500, mtModule);
1052 set_fixup_module_field_list(module_list);
1053 }
1054
1055 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1056 Handle& mirror, Handle& comp_mirror, TRAPS) {
1057 // Allocate mirror (java.lang.Class instance)
1058 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, is_scratch, CHECK);
1059 mirror = Handle(THREAD, mirror_oop);
1060
1061 // Setup indirection from mirror->klass
1062 set_klass(mirror(), k);
1063
1064 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1065 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1066
1067 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1068
1069 // It might also have a component mirror. This mirror must already exist.
1070 if (k->is_array_klass()) {
1071 if (k->is_typeArray_klass()) {
1072 BasicType type = TypeArrayKlass::cast(k)->element_type();
1073 if (is_scratch) {
1074 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1075 } else {
1076 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1077 }
1078 } else {
1079 assert(k->is_objArray_klass(), "Must be");
1080 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1081 assert(element_klass != nullptr, "Must have an element klass");
1082 if (is_scratch) {
1083 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1084 } else {
1085 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1086 }
1087 }
1088 assert(comp_mirror() != nullptr, "must have a mirror");
1089
1090 // Two-way link between the array klass and its component mirror:
1091 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1092 set_component_mirror(mirror(), comp_mirror());
1093 // See below for ordering dependencies between field array_klass in component mirror
1094 // and java_mirror in this klass.
1095 } else {
1096 assert(k->is_instance_klass(), "Must be");
1097
1098 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1099 if (HAS_PENDING_EXCEPTION) {
1100 // If any of the fields throws an exception like OOM remove the klass field
1101 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1102 // This mirror looks like a primitive type, which logically it is because it
1103 // it represents no class.
1104 set_klass(mirror(), nullptr);
1105 return;
1106 }
1107 }
1108 }
1109
1110 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1111 Handle module, Handle protection_domain,
1112 Handle classData, TRAPS) {
1113 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1114 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1115
1116 // Use this moment of initialization to cache modifier_flags also,
1117 // to support Class.getModifiers(). Instance classes recalculate
1118 // the cached flags after the class file is parsed, but before the
1119 // class is put into the system dictionary.
1120 int computed_modifiers = k->compute_modifier_flags();
1121 k->set_modifier_flags(computed_modifiers);
1122 // Class_klass has to be loaded because it is used to allocate
1123 // the mirror.
1124 if (vmClasses::Class_klass_loaded()) {
1125 Handle mirror;
1126 Handle comp_mirror;
1127
1128 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1129
1130 // set the classLoader field in the java_lang_Class instance
1131 assert(class_loader() == k->class_loader(), "should be same");
1132 set_class_loader(mirror(), class_loader());
1133
1134 // Setup indirection from klass->mirror
1135 // after any exceptions can happen during allocations.
1136 k->set_java_mirror(mirror);
1137
1138 // Set the module field in the java_lang_Class instance. This must be done
1139 // after the mirror is set.
1140 set_mirror_module_field(THREAD, k, mirror, module);
1141
1142 if (comp_mirror() != nullptr) {
1143 // Set after k->java_mirror() is published, because compiled code running
1144 // concurrently doesn't expect a k to have a null java_mirror.
1145 release_set_array_klass(comp_mirror(), k);
1146 }
1147 if (CDSConfig::is_dumping_heap()) {
1148 create_scratch_mirror(k, CHECK);
1149 }
1150 } else {
1151 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1152 fixup_mirror_list()->push(k);
1153 }
1154 }
1155
1156 #if INCLUDE_CDS_JAVA_HEAP
1157 // The "scratch mirror" stores the states of the mirror object that can be
1158 // decided at dump time (such as the initial values of the static fields, the
1159 // component mirror, etc). At runtime, more information is added to it by
1160 // java_lang_Class::restore_archived_mirror().
1161 //
1162 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1163 // produces the same result as /*runtime*/create_mirror().
1164 //
1165 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1166 // latter may contain dumptime-specific information that cannot be archived
1167 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1168 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1169 if (k->class_loader() != nullptr &&
1170 k->class_loader() != SystemDictionary::java_platform_loader() &&
1171 k->class_loader() != SystemDictionary::java_system_loader()) {
1172 // We only archive the mirrors of classes loaded by the built-in loaders
1173 return;
1174 }
1175
1176 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1177 Handle mirror;
1178 Handle comp_mirror;
1179 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1180
1181 if (comp_mirror() != nullptr) {
1182 release_set_array_klass(comp_mirror(), k);
1183 }
1184
1185 HeapShared::set_scratch_java_mirror(k, mirror());
1186 }
1187
1188 // Returns true if the mirror is updated, false if no archived mirror
1189 // data is present. After the archived mirror object is restored, the
1190 // shared klass' _has_raw_archived_mirror flag is cleared.
1191 bool java_lang_Class::restore_archived_mirror(Klass *k,
1192 Handle class_loader, Handle module,
1193 Handle protection_domain, TRAPS) {
1194 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1195 // see more details in vmClasses::resolve_all().
1196 if (!vmClasses::Class_klass_loaded()) {
1197 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1198 fixup_mirror_list()->push(k);
1199 return true;
1200 }
1201
1202 oop m = k->archived_java_mirror();
1203 assert(m != nullptr, "must have stored non-null archived mirror");
1204
1205 // Sanity: clear it now to prevent re-initialization if any of the following fails
1206 k->clear_archived_mirror_index();
1207
1208 // mirror is archived, restore
1209 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1210 assert(as_Klass(m) == k, "must be");
1211 Handle mirror(THREAD, m);
1212
1213 if (!k->is_array_klass()) {
1214 // - local static final fields with initial values were initialized at dump time
1215
1216 // create the init_lock
1217 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1218 set_init_lock(mirror(), r);
1219
1220 if (protection_domain.not_null()) {
1221 set_protection_domain(mirror(), protection_domain());
1222 }
1223 }
1224
1225 assert(class_loader() == k->class_loader(), "should be same");
1226 if (class_loader.not_null()) {
1227 set_class_loader(mirror(), class_loader());
1228 }
1229
1230 k->set_java_mirror(mirror);
1231
1232 set_mirror_module_field(THREAD, k, mirror, module);
1233
1234 if (log_is_enabled(Trace, cds, heap, mirror)) {
1235 ResourceMark rm(THREAD);
1236 log_trace(cds, heap, mirror)(
1237 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1238 }
1239
1240 return true;
1241 }
1242 #endif // INCLUDE_CDS_JAVA_HEAP
1243
1244 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1245 assert(_module_offset != 0, "must have been computed already");
1246 set_module(k->java_mirror(), module());
1247 }
1248
1249 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1250 assert(_oop_size_offset != 0, "must be set");
1251 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1252 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1253 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1254 }
1255
1256 int java_lang_Class::static_oop_field_count(oop java_class) {
1257 assert(_static_oop_field_count_offset != 0, "must be set");
1258 return java_class->int_field(_static_oop_field_count_offset);
1259 }
1260
1261 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1262 assert(_static_oop_field_count_offset != 0, "must be set");
1263 java_class->int_field_put(_static_oop_field_count_offset, size);
1264 }
1265
1266 oop java_lang_Class::protection_domain(oop java_class) {
1267 assert(_protection_domain_offset != 0, "must be set");
1268 return java_class->obj_field(_protection_domain_offset);
1269 }
1270 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1271 assert(_protection_domain_offset != 0, "must be set");
1272 java_class->obj_field_put(_protection_domain_offset, pd);
1273 }
1274
1275 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1276 assert(_component_mirror_offset != 0, "must be set");
1277 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1278 }
1279 oop java_lang_Class::component_mirror(oop java_class) {
1280 assert(_component_mirror_offset != 0, "must be set");
1281 return java_class->obj_field(_component_mirror_offset);
1282 }
1283
1284 oop java_lang_Class::init_lock(oop java_class) {
1285 assert(_init_lock_offset != 0, "must be set");
1286 return java_class->obj_field(_init_lock_offset);
1287 }
1288 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1289 assert(_init_lock_offset != 0, "must be set");
1290 java_class->obj_field_put(_init_lock_offset, init_lock);
1291 }
1292
1293 objArrayOop java_lang_Class::signers(oop java_class) {
1294 assert(_signers_offset != 0, "must be set");
1295 return (objArrayOop)java_class->obj_field(_signers_offset);
1296 }
1297
1298 oop java_lang_Class::class_data(oop java_class) {
1299 assert(_classData_offset != 0, "must be set");
1300 return java_class->obj_field(_classData_offset);
1301 }
1302 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1303 assert(_classData_offset != 0, "must be set");
1304 java_class->obj_field_put(_classData_offset, class_data);
1305 }
1306
1307 void java_lang_Class::set_reflection_data(oop java_class, oop reflection_data) {
1308 assert(_reflectionData_offset != 0, "must be set");
1309 java_class->obj_field_put(_reflectionData_offset, reflection_data);
1310 }
1311
1312 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1313 assert(_class_loader_offset != 0, "offsets should have been initialized");
1314 java_class->obj_field_put(_class_loader_offset, loader);
1315 }
1316
1317 oop java_lang_Class::class_loader(oop java_class) {
1318 assert(_class_loader_offset != 0, "must be set");
1319 return java_class->obj_field(_class_loader_offset);
1320 }
1321
1322 oop java_lang_Class::module(oop java_class) {
1323 assert(_module_offset != 0, "must be set");
1324 return java_class->obj_field(_module_offset);
1325 }
1326
1327 void java_lang_Class::set_module(oop java_class, oop module) {
1328 assert(_module_offset != 0, "must be set");
1329 java_class->obj_field_put(_module_offset, module);
1330 }
1331
1332 oop java_lang_Class::name(Handle java_class, TRAPS) {
1333 assert(_name_offset != 0, "must be set");
1334 oop o = java_class->obj_field(_name_offset);
1335 if (o == nullptr) {
1336 o = StringTable::intern(as_external_name(java_class()), THREAD);
1337 java_class->obj_field_put(_name_offset, o);
1338 }
1339 return o;
1340 }
1341
1342 oop java_lang_Class::source_file(oop java_class) {
1343 assert(_source_file_offset != 0, "must be set");
1344 return java_class->obj_field(_source_file_offset);
1345 }
1346
1347 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1348 assert(_source_file_offset != 0, "must be set");
1349 java_class->obj_field_put(_source_file_offset, source_file);
1350 }
1351
1352 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, bool is_scratch, TRAPS) {
1353 // This should be improved by adding a field at the Java level or by
1354 // introducing a new VM klass (see comment in ClassFileParser)
1355 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, is_scratch, CHECK_NULL);
1356 if (type != T_VOID) {
1357 Klass* aklass = Universe::typeArrayKlass(type);
1358 assert(aklass != nullptr, "correct bootstrap");
1359 release_set_array_klass(java_class, aklass);
1360 }
1361 #ifdef ASSERT
1362 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1363 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1364 #endif
1365 return java_class;
1366 }
1367
1368 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1369 assert(is_instance(java_class), "must be a Class object");
1370 java_class->metadata_field_put(_klass_offset, klass);
1371 }
1372
1373
1374 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1375 assert(is_instance(java_class), "must be a Class object");
1376 Symbol* name = nullptr;
1377 bool is_instance = false;
1378 if (is_primitive(java_class)) {
1379 name = vmSymbols::type_signature(primitive_type(java_class));
1380 } else {
1381 Klass* k = as_Klass(java_class);
1382 is_instance = k->is_instance_klass();
1383 name = k->name();
1384 }
1385 if (name == nullptr) {
1386 st->print("<null>");
1387 return;
1388 }
1389 if (is_instance) st->print("L");
1390 st->write((char*) name->base(), (int) name->utf8_length());
1391 if (is_instance) st->print(";");
1392 }
1393
1394 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1395 assert(is_instance(java_class), "must be a Class object");
1396 Symbol* name;
1397 if (is_primitive(java_class)) {
1398 name = vmSymbols::type_signature(primitive_type(java_class));
1399 // Because this can create a new symbol, the caller has to decrement
1400 // the refcount, so make adjustment here and below for symbols returned
1401 // that are not created or incremented due to a successful lookup.
1402 name->increment_refcount();
1403 } else {
1404 Klass* k = as_Klass(java_class);
1405 if (!k->is_instance_klass()) {
1406 name = k->name();
1407 name->increment_refcount();
1408 } else {
1409 ResourceMark rm;
1410 const char* sigstr = k->signature_name();
1411 int siglen = (int) strlen(sigstr);
1412 if (!intern_if_not_found) {
1413 name = SymbolTable::probe(sigstr, siglen);
1414 } else {
1415 name = SymbolTable::new_symbol(sigstr, siglen);
1416 }
1417 }
1418 }
1419 return name;
1420 }
1421
1422 // Returns the Java name for this Java mirror (Resource allocated)
1423 // See Klass::external_name().
1424 // For primitive type Java mirrors, its type name is returned.
1425 const char* java_lang_Class::as_external_name(oop java_class) {
1426 assert(is_instance(java_class), "must be a Class object");
1427 const char* name = nullptr;
1428 if (is_primitive(java_class)) {
1429 name = type2name(primitive_type(java_class));
1430 } else {
1431 name = as_Klass(java_class)->external_name();
1432 }
1433 if (name == nullptr) {
1434 name = "<null>";
1435 }
1436 return name;
1437 }
1438
1439 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1440 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1441 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1442 return k;
1443 }
1444
1445
1446 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1447 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1448 java_class->release_metadata_field_put(_array_klass_offset, klass);
1449 }
1450
1451
1452 BasicType java_lang_Class::primitive_type(oop java_class) {
1453 assert(is_primitive(java_class), "just checking");
1454 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1455 BasicType type = T_VOID;
1456 if (ak != nullptr) {
1457 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1458 type = ArrayKlass::cast(ak)->element_type();
1459 } else {
1460 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1461 }
1462 #ifdef ASSERT
1463 if (CDSConfig::is_dumping_heap()) {
1464 oop mirror = Universe::java_mirror(type);
1465 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1466 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1467 } else {
1468 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1469 }
1470 #endif
1471 return type;
1472 }
1473
1474 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1475 assert(is_instance(java_class), "must be a Class object");
1476 if (is_primitive(java_class)) {
1477 if (reference_klass != nullptr)
1478 (*reference_klass) = nullptr;
1479 return primitive_type(java_class);
1480 } else {
1481 if (reference_klass != nullptr)
1482 (*reference_klass) = as_Klass(java_class);
1483 return T_OBJECT;
1484 }
1485 }
1486
1487
1488 oop java_lang_Class::primitive_mirror(BasicType t) {
1489 oop mirror = Universe::java_mirror(t);
1490 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1491 assert(is_primitive(mirror), "must be primitive");
1492 return mirror;
1493 }
1494
1495 #define CLASS_FIELDS_DO(macro) \
1496 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1497 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1498 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1499 macro(_module_offset, k, "module", module_signature, false); \
1500 macro(_name_offset, k, "name", string_signature, false); \
1501 macro(_classData_offset, k, "classData", object_signature, false); \
1502 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1503 macro(_signers_offset, k, "signers", object_array_signature, false);
1504
1505 void java_lang_Class::compute_offsets() {
1506 if (_offsets_computed) {
1507 return;
1508 }
1509
1510 _offsets_computed = true;
1511
1512 InstanceKlass* k = vmClasses::Class_klass();
1513 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1514 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1515 }
1516
1517 #if INCLUDE_CDS
1518 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1519 f->do_bool(&_offsets_computed);
1520
1521 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1522
1523 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1524 }
1525 #endif
1526
1527 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1528 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1529 return the_class_mirror->int_field(_classRedefinedCount_offset);
1530 }
1531
1532 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1533 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1534 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1535 }
1536
1537
1538 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1539 // platform thread structure, and a eetop offset which was used for thread
1540 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1541 // merged, so in the HotSpot VM we just use the eetop field for the thread
1542 // instead of the privateInfo_offset.
1543 //
1544 // Note: The stackSize field is only present starting in 1.4.
1545
1546 int java_lang_Thread_FieldHolder::_group_offset;
1547 int java_lang_Thread_FieldHolder::_priority_offset;
1548 int java_lang_Thread_FieldHolder::_stackSize_offset;
1549 int java_lang_Thread_FieldHolder::_daemon_offset;
1550 int java_lang_Thread_FieldHolder::_thread_status_offset;
1551
1552 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1553 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1554 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1555 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1556 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1557 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1558
1559 void java_lang_Thread_FieldHolder::compute_offsets() {
1560 assert(_group_offset == 0, "offsets should be initialized only once");
1561
1562 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1563 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1564 }
1565
1566 #if INCLUDE_CDS
1567 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1568 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1569 }
1570 #endif
1571
1572 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1573 return holder->obj_field(_group_offset);
1574 }
1575
1576 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1577 return (ThreadPriority)holder->int_field(_priority_offset);
1578 }
1579
1580 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1581 holder->int_field_put(_priority_offset, priority);
1582 }
1583
1584 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1585 return holder->long_field(_stackSize_offset);
1586 }
1587
1588 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1589 return holder->bool_field(_daemon_offset) != 0;
1590 }
1591
1592 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1593 assert(val, "daemon status is never turned off");
1594 holder->bool_field_put(_daemon_offset, val);
1595 }
1596
1597 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1598 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1599 }
1600
1601 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1602 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1603 }
1604
1605
1606 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1607
1608 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1609 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1610
1611 void java_lang_Thread_Constants::compute_offsets() {
1612 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1613
1614 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1615 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1616 }
1617
1618 #if INCLUDE_CDS
1619 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1620 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1621 }
1622 #endif
1623
1624 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1625 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1626 oop base = k->static_field_base_raw();
1627 return base->obj_field(_static_VTHREAD_GROUP_offset);
1628 }
1629
1630
1631 int java_lang_Thread::_holder_offset;
1632 int java_lang_Thread::_name_offset;
1633 int java_lang_Thread::_contextClassLoader_offset;
1634 int java_lang_Thread::_eetop_offset;
1635 int java_lang_Thread::_jvmti_thread_state_offset;
1636 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1637 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1638 int java_lang_Thread::_interrupted_offset;
1639 int java_lang_Thread::_interruptLock_offset;
1640 int java_lang_Thread::_tid_offset;
1641 int java_lang_Thread::_continuation_offset;
1642 int java_lang_Thread::_park_blocker_offset;
1643 int java_lang_Thread::_scopedValueBindings_offset;
1644 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1645
1646 #define THREAD_FIELDS_DO(macro) \
1647 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1648 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1649 macro(_contextClassLoader_offset, k, "contextClassLoader", classloader_signature, false); \
1650 macro(_eetop_offset, k, "eetop", long_signature, false); \
1651 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1652 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1653 macro(_tid_offset, k, "tid", long_signature, false); \
1654 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1655 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1656 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1657
1658 void java_lang_Thread::compute_offsets() {
1659 assert(_holder_offset == 0, "offsets should be initialized only once");
1660
1661 InstanceKlass* k = vmClasses::Thread_klass();
1662 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1663 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1664 }
1665
1666 #if INCLUDE_CDS
1667 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1668 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1669 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1670 }
1671 #endif
1672
1673 JavaThread* java_lang_Thread::thread(oop java_thread) {
1674 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1675 }
1676
1677 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1678 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1679 }
1680
1681 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1682 java_thread->address_field_put(_eetop_offset, (address)thread);
1683 }
1684
1685 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1686 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1687 }
1688
1689 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1690 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1691 }
1692
1693 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1694 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1695 }
1696
1697 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1698 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1699 }
1700
1701 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1702 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1703 int val = VTMS_transition_disable_count(java_thread);
1704 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1705 }
1706
1707 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1708 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1709 int val = VTMS_transition_disable_count(java_thread);
1710 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1711 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1712 }
1713
1714 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1715 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1716 }
1717
1718 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1719 assert(is_in_VTMS_transition(java_thread) != val, "already %s transition", val ? "inside" : "outside");
1720 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1721 }
1722
1723 int java_lang_Thread::is_in_VTMS_transition_offset() {
1724 return _jvmti_is_in_VTMS_transition_offset;
1725 }
1726
1727 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1728 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1729 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1730 }
1731
1732 oop java_lang_Thread::holder(oop java_thread) {
1733 // Note: may return null if the thread is still attaching
1734 return java_thread->obj_field(_holder_offset);
1735 }
1736 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1737 return java_thread->obj_field(_interruptLock_offset);
1738 }
1739
1740 bool java_lang_Thread::interrupted(oop java_thread) {
1741 // Make sure the caller can safely access oops.
1742 assert(Thread::current()->is_VM_thread() ||
1743 (JavaThread::current()->thread_state() != _thread_blocked &&
1744 JavaThread::current()->thread_state() != _thread_in_native),
1745 "Unsafe access to oop");
1746 return java_thread->bool_field_volatile(_interrupted_offset);
1747 }
1748
1749 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1750 // Make sure the caller can safely access oops.
1751 assert(Thread::current()->is_VM_thread() ||
1752 (JavaThread::current()->thread_state() != _thread_blocked &&
1753 JavaThread::current()->thread_state() != _thread_in_native),
1754 "Unsafe access to oop");
1755 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1756 }
1757
1758
1759 oop java_lang_Thread::name(oop java_thread) {
1760 return java_thread->obj_field(_name_offset);
1761 }
1762
1763
1764 void java_lang_Thread::set_name(oop java_thread, oop name) {
1765 java_thread->obj_field_put(_name_offset, name);
1766 }
1767
1768 // Convenience macros for setting and getting Thread fields that
1769 // are actually stored in the FieldHolder object of the thread.
1770 // The FieldHolder can be null whilst a thread is attaching via
1771 // JNI, and when the main thread is attaching.
1772
1773 // The default value should be the default/zero initialized value
1774 // of the field as it would be in java.lang.Thread.FieldHolder.
1775 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1776 { \
1777 oop holder = java_lang_Thread::holder(java_thread); \
1778 if (holder != nullptr) \
1779 return java_lang_Thread_FieldHolder::field(holder); \
1780 else \
1781 return default_val; \
1782 }
1783
1784 // We should never be trying to set a field of an attaching thread.
1785 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1786 { \
1787 oop holder = java_lang_Thread::holder(java_thread); \
1788 assert(holder != nullptr, "Thread not fully initialized"); \
1789 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1790 }
1791
1792
1793 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1794 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1795 }
1796
1797
1798 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1799 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1800 }
1801
1802
1803 oop java_lang_Thread::threadGroup(oop java_thread) {
1804 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1805 }
1806
1807
1808 bool java_lang_Thread::is_alive(oop java_thread) {
1809 JavaThread* thr = java_lang_Thread::thread(java_thread);
1810 return (thr != nullptr);
1811 }
1812
1813
1814 bool java_lang_Thread::is_daemon(oop java_thread) {
1815 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1816 }
1817
1818
1819 void java_lang_Thread::set_daemon(oop java_thread) {
1820 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1821 }
1822
1823 oop java_lang_Thread::context_class_loader(oop java_thread) {
1824 return java_thread->obj_field(_contextClassLoader_offset);
1825 }
1826
1827
1828 jlong java_lang_Thread::stackSize(oop java_thread) {
1829 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1830 }
1831
1832 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1833 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1834 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1835 }
1836
1837 // Read thread status value from threadStatus field in java.lang.Thread java class.
1838 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1839 // Make sure the caller is operating on behalf of the VM or is
1840 // running VM code (state == _thread_in_vm).
1841 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1842 JavaThread::current()->thread_state() == _thread_in_vm,
1843 "Java Thread is not running in vm");
1844 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1845 }
1846
1847 ByteSize java_lang_Thread::thread_id_offset() {
1848 return in_ByteSize(_tid_offset);
1849 }
1850
1851 oop java_lang_Thread::park_blocker(oop java_thread) {
1852 return java_thread->obj_field(_park_blocker_offset);
1853 }
1854
1855 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1856 ThreadsListHandle tlh(JavaThread::current());
1857 JavaThread* thread;
1858 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1859 if (is_virtual) {
1860 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1861 if (carrier_thread == nullptr) {
1862 return nullptr;
1863 }
1864 thread = java_lang_Thread::thread(carrier_thread);
1865 } else {
1866 thread = java_lang_Thread::thread(java_thread);
1867 }
1868 if (thread == nullptr) {
1869 return nullptr;
1870 }
1871
1872 class GetStackTraceClosure : public HandshakeClosure {
1873 public:
1874 const Handle _java_thread;
1875 int _depth;
1876 bool _retry_handshake;
1877 GrowableArray<Method*>* _methods;
1878 GrowableArray<int>* _bcis;
1879
1880 GetStackTraceClosure(Handle java_thread) :
1881 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1882 _methods(nullptr), _bcis(nullptr) {
1883 }
1884 ~GetStackTraceClosure() {
1885 delete _methods;
1886 delete _bcis;
1887 }
1888
1889 bool read_reset_retry() {
1890 bool ret = _retry_handshake;
1891 // If we re-execute the handshake this method need to return false
1892 // when the handshake cannot be performed. (E.g. thread terminating)
1893 _retry_handshake = false;
1894 return ret;
1895 }
1896
1897 void do_thread(Thread* th) {
1898 if (!Thread::current()->is_Java_thread()) {
1899 _retry_handshake = true;
1900 return;
1901 }
1902
1903 JavaThread* thread = JavaThread::cast(th);
1904
1905 if (!thread->has_last_Java_frame()) {
1906 return;
1907 }
1908
1909 bool carrier = false;
1910 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1911 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1912 const ContinuationEntry* ce = thread->vthread_continuation();
1913 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1914 return; // not mounted
1915 }
1916 } else {
1917 carrier = (thread->vthread_continuation() != nullptr);
1918 }
1919
1920 const int max_depth = MaxJavaStackTraceDepth;
1921 const bool skip_hidden = !ShowHiddenFrames;
1922
1923 // Pick minimum length that will cover most cases
1924 int init_length = 64;
1925 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1926 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1927
1928 int total_count = 0;
1929 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1930 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1931 vfst.next()) {
1932
1933 if (skip_hidden && (vfst.method()->is_hidden() ||
1934 vfst.method()->is_continuation_enter_intrinsic())) {
1935 continue;
1936 }
1937
1938 _methods->push(vfst.method());
1939 _bcis->push(vfst.bci());
1940 total_count++;
1941 }
1942
1943 _depth = total_count;
1944 }
1945 };
1946
1947 // Handshake with target
1948 ResourceMark rm(THREAD);
1949 HandleMark hm(THREAD);
1950 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1951 do {
1952 Handshake::execute(&gstc, &tlh, thread);
1953 } while (gstc.read_reset_retry());
1954
1955 // Stop if no stack trace is found.
1956 if (gstc._depth == 0) {
1957 return nullptr;
1958 }
1959
1960 // Convert to StackTraceElement array
1961 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1962 assert(k != nullptr, "must be loaded in 1.4+");
1963 if (k->should_be_initialized()) {
1964 k->initialize(CHECK_NULL);
1965 }
1966 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1967
1968 for (int i = 0; i < gstc._depth; i++) {
1969 methodHandle method(THREAD, gstc._methods->at(i));
1970 oop element = java_lang_StackTraceElement::create(method,
1971 gstc._bcis->at(i),
1972 CHECK_NULL);
1973 trace->obj_at_put(i, element);
1974 }
1975
1976 return trace();
1977 }
1978
1979 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1980 JavaThreadStatus status = get_thread_status(java_thread);
1981 switch (status) {
1982 case JavaThreadStatus::NEW : return "NEW";
1983 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1984 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1985 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1986 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1987 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1988 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1989 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1990 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1991 default : return "UNKNOWN";
1992 };
1993 }
1994 int java_lang_ThreadGroup::_parent_offset;
1995 int java_lang_ThreadGroup::_name_offset;
1996 int java_lang_ThreadGroup::_maxPriority_offset;
1997 int java_lang_ThreadGroup::_daemon_offset;
1998
1999 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
2000 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2001 return java_thread_group->obj_field(_parent_offset);
2002 }
2003
2004 // ("name as oop" accessor is not necessary)
2005
2006 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
2007 oop name = java_thread_group->obj_field(_name_offset);
2008 // ThreadGroup.name can be null
2009 if (name != nullptr) {
2010 return java_lang_String::as_utf8_string(name);
2011 }
2012 return nullptr;
2013 }
2014
2015 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
2016 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2017 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
2018 }
2019
2020 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
2021 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2022 return java_thread_group->bool_field(_daemon_offset) != 0;
2023 }
2024
2025 #define THREADGROUP_FIELDS_DO(macro) \
2026 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
2027 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2028 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
2029 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
2030
2031 void java_lang_ThreadGroup::compute_offsets() {
2032 assert(_parent_offset == 0, "offsets should be initialized only once");
2033
2034 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2035 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2036 }
2037
2038 #if INCLUDE_CDS
2039 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2040 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2041 }
2042 #endif
2043
2044
2045 // java_lang_VirtualThread
2046
2047 int java_lang_VirtualThread::static_vthread_scope_offset;
2048 int java_lang_VirtualThread::_carrierThread_offset;
2049 int java_lang_VirtualThread::_continuation_offset;
2050 int java_lang_VirtualThread::_state_offset;
2051 int java_lang_VirtualThread::_next_offset;
2052 int java_lang_VirtualThread::_onWaitingList_offset;
2053 int java_lang_VirtualThread::_notified_offset;
2054 int java_lang_VirtualThread::_timeout_offset;
2055 int java_lang_VirtualThread::_objectWaiter_offset;
2056
2057 #define VTHREAD_FIELDS_DO(macro) \
2058 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
2059 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
2060 macro(_continuation_offset, k, "cont", continuation_signature, false); \
2061 macro(_state_offset, k, "state", int_signature, false); \
2062 macro(_next_offset, k, "next", vthread_signature, false); \
2063 macro(_onWaitingList_offset, k, "onWaitingList", bool_signature, false); \
2064 macro(_notified_offset, k, "notified", bool_signature, false); \
2065 macro(_timeout_offset, k, "timeout", long_signature, false);
2066
2067
2068 void java_lang_VirtualThread::compute_offsets() {
2069 InstanceKlass* k = vmClasses::VirtualThread_klass();
2070 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2071 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2072 }
2073
2074 bool java_lang_VirtualThread::is_instance(oop obj) {
2075 return obj != nullptr && is_subclass(obj->klass());
2076 }
2077
2078 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2079 oop thread = vthread->obj_field(_carrierThread_offset);
2080 return thread;
2081 }
2082
2083 oop java_lang_VirtualThread::continuation(oop vthread) {
2084 oop cont = vthread->obj_field(_continuation_offset);
2085 return cont;
2086 }
2087
2088 int java_lang_VirtualThread::state(oop vthread) {
2089 return vthread->int_field_acquire(_state_offset);
2090 }
2091
2092 void java_lang_VirtualThread::set_state(oop vthread, int state) {
2093 vthread->release_int_field_put(_state_offset, state);
2094 }
2095
2096 int java_lang_VirtualThread::cmpxchg_state(oop vthread, int old_state, int new_state) {
2097 jint* addr = vthread->field_addr<jint>(_state_offset);
2098 int res = Atomic::cmpxchg(addr, old_state, new_state);
2099 return res;
2100 }
2101
2102 oop java_lang_VirtualThread::next(oop vthread) {
2103 return vthread->obj_field(_next_offset);
2104 }
2105
2106 void java_lang_VirtualThread::set_next(oop vthread, oop next_vthread) {
2107 vthread->obj_field_put(_next_offset, next_vthread);
2108 }
2109
2110 // Add vthread to the waiting list if it's not already in it. Multiple threads
2111 // could be trying to add vthread to the list at the same time, so we control
2112 // access with a cmpxchg on onWaitingList. The winner adds vthread to the list.
2113 // Method returns true if we added vthread to the list, false otherwise.
2114 bool java_lang_VirtualThread::set_onWaitingList(oop vthread, OopHandle& list_head) {
2115 jboolean* addr = vthread->field_addr<jboolean>(_onWaitingList_offset);
2116 jboolean vthread_on_list = Atomic::load(addr);
2117 if (!vthread_on_list) {
2118 vthread_on_list = Atomic::cmpxchg(addr, (jboolean)JNI_FALSE, (jboolean)JNI_TRUE);
2119 if (!vthread_on_list) {
2120 for (;;) {
2121 oop head = list_head.resolve();
2122 java_lang_VirtualThread::set_next(vthread, head);
2123 if (list_head.cmpxchg(head, vthread) == head) return true;
2124 }
2125 }
2126 }
2127 return false; // already on waiting list
2128 }
2129
2130 void java_lang_VirtualThread::set_notified(oop vthread, jboolean value) {
2131 vthread->bool_field_put_volatile(_notified_offset, value);
2132 }
2133
2134 jlong java_lang_VirtualThread::timeout(oop vthread) {
2135 return vthread->long_field(_timeout_offset);
2136 }
2137
2138 void java_lang_VirtualThread::set_timeout(oop vthread, jlong value) {
2139 vthread->long_field_put(_timeout_offset, value);
2140 }
2141
2142 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2143 JavaThreadStatus status = JavaThreadStatus::NEW;
2144 switch (state & ~SUSPENDED) {
2145 case NEW:
2146 status = JavaThreadStatus::NEW;
2147 break;
2148 case STARTED:
2149 case RUNNING:
2150 case PARKING:
2151 case TIMED_PARKING:
2152 case UNPARKED:
2153 case YIELDING:
2154 case YIELDED:
2155 case UNBLOCKED:
2156 case WAITING:
2157 case TIMED_WAITING:
2158 status = JavaThreadStatus::RUNNABLE;
2159 break;
2160 case PARKED:
2161 case PINNED:
2162 status = JavaThreadStatus::PARKED;
2163 break;
2164 case TIMED_PARKED:
2165 case TIMED_PINNED:
2166 status = JavaThreadStatus::PARKED_TIMED;
2167 break;
2168 case BLOCKING:
2169 case BLOCKED:
2170 status = JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER;
2171 break;
2172 case WAIT:
2173 status = JavaThreadStatus::IN_OBJECT_WAIT;
2174 break;
2175 case TIMED_WAIT:
2176 status = JavaThreadStatus::IN_OBJECT_WAIT_TIMED;
2177 break;
2178 case TERMINATED:
2179 status = JavaThreadStatus::TERMINATED;
2180 break;
2181 default:
2182 ShouldNotReachHere();
2183 }
2184 return status;
2185 }
2186
2187 ObjectMonitor* java_lang_VirtualThread::current_pending_monitor(oop vthread) {
2188 ObjectWaiter* waiter = objectWaiter(vthread);
2189 if (waiter != nullptr && waiter->at_monitorenter()) {
2190 return waiter->monitor();
2191 }
2192 return nullptr;
2193 }
2194
2195 ObjectMonitor* java_lang_VirtualThread::current_waiting_monitor(oop vthread) {
2196 ObjectWaiter* waiter = objectWaiter(vthread);
2197 if (waiter != nullptr && waiter->is_wait()) {
2198 return waiter->monitor();
2199 }
2200 return nullptr;
2201 }
2202
2203 bool java_lang_VirtualThread::is_preempted(oop vthread) {
2204 oop continuation = java_lang_VirtualThread::continuation(vthread);
2205 assert(continuation != nullptr, "vthread with no continuation");
2206 stackChunkOop chunk = jdk_internal_vm_Continuation::tail(continuation);
2207 return chunk != nullptr && chunk->preempted();
2208 }
2209
2210 #if INCLUDE_CDS
2211 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2212 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2213 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2214 }
2215 #endif
2216
2217 // java_lang_Throwable
2218
2219 int java_lang_Throwable::_backtrace_offset;
2220 int java_lang_Throwable::_detailMessage_offset;
2221 int java_lang_Throwable::_stackTrace_offset;
2222 int java_lang_Throwable::_depth_offset;
2223 int java_lang_Throwable::_cause_offset;
2224 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2225
2226 #define THROWABLE_FIELDS_DO(macro) \
2227 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2228 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2229 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2230 macro(_depth_offset, k, "depth", int_signature, false); \
2231 macro(_cause_offset, k, "cause", throwable_signature, false); \
2232 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2233
2234 void java_lang_Throwable::compute_offsets() {
2235 InstanceKlass* k = vmClasses::Throwable_klass();
2236 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2237 }
2238
2239 #if INCLUDE_CDS
2240 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2241 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2242 }
2243 #endif
2244
2245 oop java_lang_Throwable::unassigned_stacktrace() {
2246 InstanceKlass* ik = vmClasses::Throwable_klass();
2247 oop base = ik->static_field_base_raw();
2248 return base->obj_field(_static_unassigned_stacktrace_offset);
2249 }
2250
2251 oop java_lang_Throwable::backtrace(oop throwable) {
2252 return throwable->obj_field_acquire(_backtrace_offset);
2253 }
2254
2255
2256 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2257 throwable->release_obj_field_put(_backtrace_offset, value);
2258 }
2259
2260 int java_lang_Throwable::depth(oop throwable) {
2261 return throwable->int_field(_depth_offset);
2262 }
2263
2264 void java_lang_Throwable::set_depth(oop throwable, int value) {
2265 throwable->int_field_put(_depth_offset, value);
2266 }
2267
2268 oop java_lang_Throwable::message(oop throwable) {
2269 return throwable->obj_field(_detailMessage_offset);
2270 }
2271
2272 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2273 oop msg = java_lang_Throwable::message(throwable);
2274 const char* msg_utf8 = nullptr;
2275 if (msg != nullptr) {
2276 msg_utf8 = java_lang_String::as_utf8_string(msg);
2277 }
2278 return msg_utf8;
2279 }
2280
2281 oop java_lang_Throwable::cause(oop throwable) {
2282 return throwable->obj_field(_cause_offset);
2283 }
2284
2285 void java_lang_Throwable::set_message(oop throwable, oop value) {
2286 throwable->obj_field_put(_detailMessage_offset, value);
2287 }
2288
2289
2290 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2291 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2292 }
2293
2294 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2295 set_stacktrace(throwable, nullptr);
2296 }
2297
2298
2299 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2300 ResourceMark rm;
2301 Klass* k = throwable->klass();
2302 assert(k != nullptr, "just checking");
2303 st->print("%s", k->external_name());
2304 oop msg = message(throwable);
2305 if (msg != nullptr) {
2306 st->print(": %s", java_lang_String::as_utf8_string(msg));
2307 }
2308 }
2309
2310 // After this many redefines, the stack trace is unreliable.
2311 const int MAX_VERSION = USHRT_MAX;
2312
2313 static inline bool version_matches(Method* method, int version) {
2314 assert(version < MAX_VERSION, "version is too big");
2315 return method != nullptr && (method->constants()->version() == version);
2316 }
2317
2318 // This class provides a simple wrapper over the internal structure of
2319 // exception backtrace to insulate users of the backtrace from needing
2320 // to know what it looks like.
2321 // The code of this class is not GC safe. Allocations can only happen
2322 // in expand().
2323 class BacktraceBuilder: public StackObj {
2324 friend class BacktraceIterator;
2325 private:
2326 Handle _backtrace;
2327 objArrayOop _head;
2328 typeArrayOop _methods;
2329 typeArrayOop _bcis;
2330 objArrayOop _mirrors;
2331 typeArrayOop _names; // Needed to insulate method name against redefinition.
2332 // True if the top frame of the backtrace is omitted because it shall be hidden.
2333 bool _has_hidden_top_frame;
2334 int _index;
2335 NoSafepointVerifier _nsv;
2336
2337 enum {
2338 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2339 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2340 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2341 trace_names_offset = java_lang_Throwable::trace_names_offset,
2342 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2343 trace_next_offset = java_lang_Throwable::trace_next_offset,
2344 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2345 trace_size = java_lang_Throwable::trace_size,
2346 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2347 };
2348
2349 // get info out of chunks
2350 static typeArrayOop get_methods(objArrayHandle chunk) {
2351 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2352 assert(methods != nullptr, "method array should be initialized in backtrace");
2353 return methods;
2354 }
2355 static typeArrayOop get_bcis(objArrayHandle chunk) {
2356 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2357 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2358 return bcis;
2359 }
2360 static objArrayOop get_mirrors(objArrayHandle chunk) {
2361 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2362 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2363 return mirrors;
2364 }
2365 static typeArrayOop get_names(objArrayHandle chunk) {
2366 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2367 assert(names != nullptr, "names array should be initialized in backtrace");
2368 return names;
2369 }
2370 static bool has_hidden_top_frame(objArrayHandle chunk) {
2371 oop hidden = chunk->obj_at(trace_hidden_offset);
2372 return hidden != nullptr;
2373 }
2374
2375 public:
2376
2377 // constructor for new backtrace
2378 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2379 expand(CHECK);
2380 _backtrace = Handle(THREAD, _head);
2381 _index = 0;
2382 }
2383
2384 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2385 _methods = get_methods(backtrace);
2386 _bcis = get_bcis(backtrace);
2387 _mirrors = get_mirrors(backtrace);
2388 _names = get_names(backtrace);
2389 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2390 assert(_methods->length() == _bcis->length() &&
2391 _methods->length() == _mirrors->length() &&
2392 _mirrors->length() == _names->length(),
2393 "method and source information arrays should match");
2394
2395 // head is the preallocated backtrace
2396 _head = backtrace();
2397 _backtrace = Handle(thread, _head);
2398 _index = 0;
2399 }
2400
2401 void expand(TRAPS) {
2402 objArrayHandle old_head(THREAD, _head);
2403 PauseNoSafepointVerifier pnsv(&_nsv);
2404
2405 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2406 objArrayHandle new_head(THREAD, head);
2407
2408 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2409 typeArrayHandle new_methods(THREAD, methods);
2410
2411 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2412 typeArrayHandle new_bcis(THREAD, bcis);
2413
2414 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2415 objArrayHandle new_mirrors(THREAD, mirrors);
2416
2417 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2418 typeArrayHandle new_names(THREAD, names);
2419
2420 if (!old_head.is_null()) {
2421 old_head->obj_at_put(trace_next_offset, new_head());
2422 }
2423 new_head->obj_at_put(trace_methods_offset, new_methods());
2424 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2425 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2426 new_head->obj_at_put(trace_names_offset, new_names());
2427 new_head->obj_at_put(trace_hidden_offset, nullptr);
2428
2429 _head = new_head();
2430 _methods = new_methods();
2431 _bcis = new_bcis();
2432 _mirrors = new_mirrors();
2433 _names = new_names();
2434 _index = 0;
2435 }
2436
2437 oop backtrace() {
2438 return _backtrace();
2439 }
2440
2441 inline void push(Method* method, int bci, TRAPS) {
2442 // Smear the -1 bci to 0 since the array only holds unsigned
2443 // shorts. The later line number lookup would just smear the -1
2444 // to a 0 even if it could be recorded.
2445 if (bci == SynchronizationEntryBCI) bci = 0;
2446
2447 if (_index >= trace_chunk_size) {
2448 methodHandle mhandle(THREAD, method);
2449 expand(CHECK);
2450 method = mhandle();
2451 }
2452
2453 _methods->ushort_at_put(_index, method->orig_method_idnum());
2454 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2455
2456 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2457 // klass owning the symbols alive so their refcounts aren't decremented.
2458 Symbol* name = method->name();
2459 _names->symbol_at_put(_index, name);
2460
2461 // We need to save the mirrors in the backtrace to keep the class
2462 // from being unloaded while we still have this stack trace.
2463 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2464 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2465
2466 _index++;
2467 }
2468
2469 void set_has_hidden_top_frame() {
2470 if (!_has_hidden_top_frame) {
2471 // It would be nice to add java/lang/Boolean::TRUE here
2472 // to indicate that this backtrace has a hidden top frame.
2473 // But this code is used before TRUE is allocated.
2474 // Therefore let's just use an arbitrary legal oop
2475 // available right here. _methods is a short[].
2476 assert(_methods != nullptr, "we need a legal oop");
2477 _has_hidden_top_frame = true;
2478 _head->obj_at_put(trace_hidden_offset, _methods);
2479 }
2480 }
2481 };
2482
2483 struct BacktraceElement : public StackObj {
2484 int _method_id;
2485 int _bci;
2486 int _version;
2487 Symbol* _name;
2488 Handle _mirror;
2489 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2490 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2491 };
2492
2493 class BacktraceIterator : public StackObj {
2494 int _index;
2495 objArrayHandle _result;
2496 objArrayHandle _mirrors;
2497 typeArrayHandle _methods;
2498 typeArrayHandle _bcis;
2499 typeArrayHandle _names;
2500
2501 void init(objArrayHandle result, Thread* thread) {
2502 // Get method id, bci, version and mirror from chunk
2503 _result = result;
2504 if (_result.not_null()) {
2505 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2506 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2507 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2508 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2509 _index = 0;
2510 }
2511 }
2512 public:
2513 BacktraceIterator(objArrayHandle result, Thread* thread) {
2514 init(result, thread);
2515 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2516 }
2517
2518 BacktraceElement next(Thread* thread) {
2519 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2520 _methods->ushort_at(_index),
2521 Backtrace::version_at(_bcis->int_at(_index)),
2522 Backtrace::bci_at(_bcis->int_at(_index)),
2523 _names->symbol_at(_index));
2524 _index++;
2525
2526 if (_index >= java_lang_Throwable::trace_chunk_size) {
2527 int next_offset = java_lang_Throwable::trace_next_offset;
2528 // Get next chunk
2529 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2530 init(result, thread);
2531 }
2532 return e;
2533 }
2534
2535 bool repeat() {
2536 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2537 }
2538 };
2539
2540
2541 // Print stack trace element to resource allocated buffer
2542 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2543 int version, int bci, Symbol* name) {
2544 ResourceMark rm;
2545
2546 // Get strings and string lengths
2547 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2548 const char* klass_name = holder->external_name();
2549 int buf_len = (int)strlen(klass_name);
2550
2551 char* method_name = name->as_C_string();
2552 buf_len += (int)strlen(method_name);
2553
2554 char* source_file_name = nullptr;
2555 Symbol* source = Backtrace::get_source_file_name(holder, version);
2556 if (source != nullptr) {
2557 source_file_name = source->as_C_string();
2558 buf_len += (int)strlen(source_file_name);
2559 }
2560
2561 char *module_name = nullptr, *module_version = nullptr;
2562 ModuleEntry* module = holder->module();
2563 if (module->is_named()) {
2564 module_name = module->name()->as_C_string();
2565 buf_len += (int)strlen(module_name);
2566 if (module->version() != nullptr) {
2567 module_version = module->version()->as_C_string();
2568 buf_len += (int)strlen(module_version);
2569 }
2570 }
2571
2572 // Allocate temporary buffer with extra space for formatting and line number
2573 const size_t buf_size = buf_len + 64;
2574 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2575
2576 // Print stack trace line in buffer
2577 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2578
2579 // Print module information
2580 if (module_name != nullptr) {
2581 if (module_version != nullptr) {
2582 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2583 } else {
2584 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2585 }
2586 }
2587
2588 // The method can be null if the requested class version is gone
2589 Method* method = holder->method_with_orig_idnum(method_id, version);
2590 if (!version_matches(method, version)) {
2591 strcat(buf, "Redefined)");
2592 } else {
2593 int line_number = Backtrace::get_line_number(method, bci);
2594 if (line_number == -2) {
2595 strcat(buf, "Native Method)");
2596 } else {
2597 if (source_file_name != nullptr && (line_number != -1)) {
2598 // Sourcename and linenumber
2599 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2600 } else if (source_file_name != nullptr) {
2601 // Just sourcename
2602 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2603 } else {
2604 // Neither sourcename nor linenumber
2605 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2606 }
2607 nmethod* nm = method->code();
2608 if (WizardMode && nm != nullptr) {
2609 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2610 }
2611 }
2612 }
2613
2614 st->print_cr("%s", buf);
2615 }
2616
2617 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2618 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2619 int method_id = method->orig_method_idnum();
2620 int version = method->constants()->version();
2621 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2622 }
2623
2624 /**
2625 * Print the throwable message and its stack trace plus all causes by walking the
2626 * cause chain. The output looks the same as of Throwable.printStackTrace().
2627 */
2628 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2629 // First, print the message.
2630 print(throwable(), st);
2631 st->cr();
2632
2633 // Now print the stack trace.
2634 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2635 while (throwable.not_null()) {
2636 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2637 if (result.is_null()) {
2638 st->print_raw_cr("\t<<no stack trace available>>");
2639 return;
2640 }
2641 BacktraceIterator iter(result, THREAD);
2642
2643 while (iter.repeat()) {
2644 BacktraceElement bte = iter.next(THREAD);
2645 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2646 }
2647 if (THREAD->can_call_java()) {
2648 // Call getCause() which doesn't necessarily return the _cause field.
2649 ExceptionMark em(THREAD);
2650 JavaValue cause(T_OBJECT);
2651 JavaCalls::call_virtual(&cause,
2652 throwable,
2653 throwable->klass(),
2654 vmSymbols::getCause_name(),
2655 vmSymbols::void_throwable_signature(),
2656 THREAD);
2657 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2658 if (HAS_PENDING_EXCEPTION) {
2659 CLEAR_PENDING_EXCEPTION;
2660 throwable = Handle();
2661 } else {
2662 throwable = Handle(THREAD, cause.get_oop());
2663 if (throwable.not_null()) {
2664 st->print("Caused by: ");
2665 print(throwable(), st);
2666 st->cr();
2667 }
2668 }
2669 } else {
2670 st->print_raw_cr("<<cannot call Java to get cause>>");
2671 return;
2672 }
2673 }
2674 }
2675
2676 /**
2677 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2678 */
2679 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2680 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2681 JavaValue result(T_VOID);
2682 JavaCalls::call_virtual(&result,
2683 throwable,
2684 vmClasses::Throwable_klass(),
2685 vmSymbols::printStackTrace_name(),
2686 vmSymbols::void_method_signature(),
2687 THREAD);
2688 }
2689
2690 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2691 if (!StackTraceInThrowable) return;
2692 ResourceMark rm(THREAD);
2693
2694 // Start out by clearing the backtrace for this object, in case the VM
2695 // runs out of memory while allocating the stack trace
2696 set_backtrace(throwable(), nullptr);
2697 // Clear lazily constructed Java level stacktrace if refilling occurs
2698 // This is unnecessary in 1.7+ but harmless
2699 clear_stacktrace(throwable());
2700
2701 int max_depth = MaxJavaStackTraceDepth;
2702 JavaThread* thread = THREAD;
2703
2704 BacktraceBuilder bt(CHECK);
2705
2706 // If there is no Java frame just return the method that was being called
2707 // with bci 0
2708 if (!thread->has_last_Java_frame()) {
2709 if (max_depth >= 1 && method() != nullptr) {
2710 bt.push(method(), 0, CHECK);
2711 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2712 set_depth(throwable(), 1);
2713 set_backtrace(throwable(), bt.backtrace());
2714 }
2715 return;
2716 }
2717
2718 // Instead of using vframe directly, this version of fill_in_stack_trace
2719 // basically handles everything by hand. This significantly improved the
2720 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2721 // See bug 6333838 for more details.
2722 // The "ASSERT" here is to verify this method generates the exactly same stack
2723 // trace as utilizing vframe.
2724 #ifdef ASSERT
2725 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2726 #endif
2727 int total_count = 0;
2728 RegisterMap map(thread,
2729 RegisterMap::UpdateMap::skip,
2730 RegisterMap::ProcessFrames::skip,
2731 RegisterMap::WalkContinuation::include);
2732 int decode_offset = 0;
2733 nmethod* nm = nullptr;
2734 bool skip_fillInStackTrace_check = false;
2735 bool skip_throwableInit_check = false;
2736 bool skip_hidden = !ShowHiddenFrames;
2737 bool show_carrier = ShowCarrierFrames;
2738 ContinuationEntry* cont_entry = thread->last_continuation();
2739 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2740 Method* method = nullptr;
2741 int bci = 0;
2742
2743 // Compiled java method case.
2744 if (decode_offset != 0) {
2745 DebugInfoReadStream stream(nm, decode_offset);
2746 decode_offset = stream.read_int();
2747 method = (Method*)nm->metadata_at(stream.read_int());
2748 bci = stream.read_bci();
2749 } else {
2750 if (fr.is_first_frame()) break;
2751
2752 if (Continuation::is_continuation_enterSpecial(fr)) {
2753 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2754 if (!show_carrier && cont_entry->is_virtual_thread()) {
2755 break;
2756 }
2757 cont_entry = cont_entry->parent();
2758 }
2759
2760 address pc = fr.pc();
2761 if (fr.is_interpreted_frame()) {
2762 address bcp;
2763 if (!map.in_cont()) {
2764 bcp = fr.interpreter_frame_bcp();
2765 method = fr.interpreter_frame_method();
2766 } else {
2767 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2768 method = map.stack_chunk()->interpreter_frame_method(fr);
2769 }
2770 bci = method->bci_from(bcp);
2771 fr = fr.sender(&map);
2772 } else {
2773 CodeBlob* cb = fr.cb();
2774 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2775 // but non nmethod
2776 fr = fr.sender(&map);
2777 if (cb == nullptr || !cb->is_nmethod()) {
2778 continue;
2779 }
2780 nm = cb->as_nmethod();
2781 assert(nm->method() != nullptr, "must be");
2782 if (nm->method()->is_native()) {
2783 method = nm->method();
2784 bci = 0;
2785 } else {
2786 PcDesc* pd = nm->pc_desc_at(pc);
2787 decode_offset = pd->scope_decode_offset();
2788 // if decode_offset is not equal to 0, it will execute the
2789 // "compiled java method case" at the beginning of the loop.
2790 continue;
2791 }
2792 }
2793 }
2794 #ifdef ASSERT
2795 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2796 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2797 st.next();
2798 }
2799 #endif
2800
2801 // the format of the stacktrace will be:
2802 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2803 // - 0 or more <init> methods for the exception class (skipped)
2804 // - rest of the stack
2805
2806 if (!skip_fillInStackTrace_check) {
2807 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2808 throwable->is_a(method->method_holder())) {
2809 continue;
2810 }
2811 else {
2812 skip_fillInStackTrace_check = true; // gone past them all
2813 }
2814 }
2815 if (!skip_throwableInit_check) {
2816 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2817
2818 // skip <init> methods of the exception class and superclasses
2819 // This is similar to classic VM.
2820 if (method->name() == vmSymbols::object_initializer_name() &&
2821 throwable->is_a(method->method_holder())) {
2822 continue;
2823 } else {
2824 // there are none or we've seen them all - either way stop checking
2825 skip_throwableInit_check = true;
2826 }
2827 }
2828 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2829 if (skip_hidden) {
2830 if (total_count == 0) {
2831 // The top frame will be hidden from the stack trace.
2832 bt.set_has_hidden_top_frame();
2833 }
2834 continue;
2835 }
2836 }
2837
2838 bt.push(method, bci, CHECK);
2839 total_count++;
2840 }
2841
2842 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2843
2844 // Put completed stack trace into throwable object
2845 set_backtrace(throwable(), bt.backtrace());
2846 set_depth(throwable(), total_count);
2847 }
2848
2849 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2850 // No-op if stack trace is disabled
2851 if (!StackTraceInThrowable) {
2852 return;
2853 }
2854
2855 // Disable stack traces for some preallocated out of memory errors
2856 if (!Universe::should_fill_in_stack_trace(throwable)) {
2857 return;
2858 }
2859
2860 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2861 PreserveExceptionMark pm(THREAD);
2862
2863 fill_in_stack_trace(throwable, method, THREAD);
2864 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2865 // original exception via the PreserveExceptionMark destructor.
2866 CLEAR_PENDING_EXCEPTION;
2867 }
2868
2869 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2870 // Allocate stack trace - backtrace is created but not filled in
2871
2872 // No-op if stack trace is disabled
2873 if (!StackTraceInThrowable) return;
2874 BacktraceBuilder bt(CHECK); // creates a backtrace
2875 set_backtrace(throwable(), bt.backtrace());
2876 }
2877
2878
2879 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2880 // Fill in stack trace into preallocated backtrace (no GC)
2881
2882 // No-op if stack trace is disabled
2883 if (!StackTraceInThrowable) return;
2884
2885 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2886
2887 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2888
2889 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2890 assert(backtrace.not_null(), "backtrace should have been preallocated");
2891
2892 ResourceMark rm(THREAD);
2893 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2894
2895 BacktraceBuilder bt(THREAD, backtrace);
2896
2897 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2898 // methods as preallocated errors aren't created by "java" code.
2899
2900 // fill in as much stack trace as possible
2901 int chunk_count = 0;
2902 for (;!st.at_end(); st.next()) {
2903 bt.push(st.method(), st.bci(), CHECK);
2904 chunk_count++;
2905
2906 // Bail-out for deep stacks
2907 if (chunk_count >= trace_chunk_size) break;
2908 }
2909 set_depth(throwable(), chunk_count);
2910 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2911
2912 // We support the Throwable immutability protocol defined for Java 7.
2913 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2914 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2915 }
2916
2917 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2918 objArrayHandle stack_trace_array_h, TRAPS) {
2919
2920 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2921 THROW(vmSymbols::java_lang_NullPointerException());
2922 }
2923
2924 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2925
2926 if (stack_trace_array_h->length() != depth) {
2927 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2928 }
2929
2930 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2931 BacktraceIterator iter(result, THREAD);
2932
2933 int index = 0;
2934 while (iter.repeat()) {
2935 BacktraceElement bte = iter.next(THREAD);
2936
2937 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2938
2939 if (stack_trace_element.is_null()) {
2940 THROW(vmSymbols::java_lang_NullPointerException());
2941 }
2942
2943 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2944 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2945
2946 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2947 method,
2948 bte._version,
2949 bte._bci,
2950 bte._name,
2951 CHECK);
2952 }
2953 }
2954
2955 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2956 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2957 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2958 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2959 // symbolic stacktrace of 'throwable'.
2960 assert(throwable.not_null(), "shouldn't be");
2961
2962 // Now create the message from the original exception and thread name.
2963 ResourceMark rm(current);
2964 const char *message = nullptr;
2965 oop detailed_message = java_lang_Throwable::message(throwable());
2966 if (detailed_message != nullptr) {
2967 message = java_lang_String::as_utf8_string(detailed_message);
2968 }
2969 stringStream st;
2970 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2971 message == nullptr ? "" : ":");
2972 if (message == nullptr) {
2973 st.print("[in thread \"%s\"]", current->name());
2974 } else {
2975 st.print("%s [in thread \"%s\"]", message, current->name());
2976 }
2977
2978 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2979 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2980 // If new_exception returns a different exception while creating the exception,
2981 // abandon the attempt to save the initialization error and return null.
2982 if (init_error->klass()->name() != exception_name) {
2983 log_info(class, init)("Exception %s thrown while saving initialization exception",
2984 init_error->klass()->external_name());
2985 return Handle();
2986 }
2987
2988 // Call to java to fill in the stack trace and clear declaringClassObject to
2989 // not keep classes alive in the stack trace.
2990 // call this: public StackTraceElement[] getStackTrace()
2991 JavaValue result(T_ARRAY);
2992 JavaCalls::call_virtual(&result, throwable,
2993 vmClasses::Throwable_klass(),
2994 vmSymbols::getStackTrace_name(),
2995 vmSymbols::getStackTrace_signature(),
2996 current);
2997 if (!current->has_pending_exception()){
2998 Handle stack_trace(current, result.get_oop());
2999 assert(stack_trace->is_objArray(), "Should be an array");
3000 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3001 // Clear backtrace because the stacktrace should be used instead.
3002 set_backtrace(init_error(), nullptr);
3003 } else {
3004 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3005 init_error->klass()->external_name());
3006 current->clear_pending_exception();
3007 }
3008
3009 return init_error;
3010 }
3011
3012 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3013 JavaThread* current = JavaThread::current();
3014 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
3015 BacktraceIterator iter(result, current);
3016 // No backtrace available.
3017 if (!iter.repeat()) return false;
3018
3019 // If the exception happened in a frame that has been hidden, i.e.,
3020 // omitted from the back trace, we can not compute the message.
3021 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
3022 if (hidden != nullptr) {
3023 return false;
3024 }
3025
3026 // Get first backtrace element.
3027 BacktraceElement bte = iter.next(current);
3028
3029 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
3030 assert(holder != nullptr, "first element should be non-null");
3031 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3032
3033 // Original version is no longer available.
3034 if (m == nullptr || !version_matches(m, bte._version)) {
3035 return false;
3036 }
3037
3038 *method = m;
3039 *bci = bte._bci;
3040 return true;
3041 }
3042
3043 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
3044 // Allocate java.lang.StackTraceElement instance
3045 InstanceKlass* k = vmClasses::StackTraceElement_klass();
3046 assert(k != nullptr, "must be loaded in 1.4+");
3047 if (k->should_be_initialized()) {
3048 k->initialize(CHECK_NULL);
3049 }
3050
3051 Handle element = k->allocate_instance_handle(CHECK_NULL);
3052
3053 int version = method->constants()->version();
3054 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
3055 return element();
3056 }
3057
3058 void java_lang_StackTraceElement::fill_in(Handle element,
3059 InstanceKlass* holder, const methodHandle& method,
3060 int version, int bci, Symbol* name, TRAPS) {
3061 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
3062
3063 ResourceMark rm(THREAD);
3064 HandleMark hm(THREAD);
3065
3066 // Fill in class name
3067 Handle java_class(THREAD, holder->java_mirror());
3068 oop classname = java_lang_Class::name(java_class, CHECK);
3069 java_lang_StackTraceElement::set_declaringClass(element(), classname);
3070 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
3071
3072 oop loader = holder->class_loader();
3073 if (loader != nullptr) {
3074 oop loader_name = java_lang_ClassLoader::name(loader);
3075 if (loader_name != nullptr)
3076 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
3077 }
3078
3079 // Fill in method name
3080 oop methodname = StringTable::intern(name, CHECK);
3081 java_lang_StackTraceElement::set_methodName(element(), methodname);
3082
3083 // Fill in module name and version
3084 ModuleEntry* module = holder->module();
3085 if (module->is_named()) {
3086 oop module_name = StringTable::intern(module->name(), CHECK);
3087 java_lang_StackTraceElement::set_moduleName(element(), module_name);
3088 oop module_version;
3089 if (module->version() != nullptr) {
3090 module_version = StringTable::intern(module->version(), CHECK);
3091 } else {
3092 module_version = nullptr;
3093 }
3094 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
3095 }
3096
3097 if (method() == nullptr || !version_matches(method(), version)) {
3098 // The method was redefined, accurate line number information isn't available
3099 java_lang_StackTraceElement::set_fileName(element(), nullptr);
3100 java_lang_StackTraceElement::set_lineNumber(element(), -1);
3101 } else {
3102 Symbol* source;
3103 oop source_file;
3104 int line_number;
3105 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
3106
3107 java_lang_StackTraceElement::set_fileName(element(), source_file);
3108 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
3109 }
3110 }
3111
3112 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
3113 InstanceKlass* holder,
3114 int version,
3115 const methodHandle& method,
3116 int bci,
3117 Symbol*& source,
3118 oop& source_file,
3119 int& line_number, TRAPS) {
3120 // Fill in source file name and line number.
3121 source = Backtrace::get_source_file_name(holder, version);
3122 source_file = java_lang_Class::source_file(java_class());
3123 if (source != nullptr) {
3124 // Class was not redefined. We can trust its cache if set,
3125 // else we have to initialize it.
3126 if (source_file == nullptr) {
3127 source_file = StringTable::intern(source, CHECK);
3128 java_lang_Class::set_source_file(java_class(), source_file);
3129 }
3130 } else {
3131 // Class was redefined. Dump the cache if it was set.
3132 if (source_file != nullptr) {
3133 source_file = nullptr;
3134 java_lang_Class::set_source_file(java_class(), source_file);
3135 }
3136 }
3137 line_number = Backtrace::get_line_number(method(), bci);
3138 }
3139
3140 #if INCLUDE_JVMCI
3141 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3142 Symbol*& filename, int& line_number, TRAPS) {
3143 ResourceMark rm(THREAD);
3144 HandleMark hm(THREAD);
3145
3146 filename = nullptr;
3147 line_number = -1;
3148
3149 oop source_file;
3150 int version = method->constants()->version();
3151 InstanceKlass* holder = method->method_holder();
3152 Handle java_class(THREAD, holder->java_mirror());
3153 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3154 }
3155 #endif // INCLUDE_JVMCI
3156
3157 // java_lang_ClassFrameInfo
3158
3159 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3160 int java_lang_ClassFrameInfo::_flags_offset;
3161
3162 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3163 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3164 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3165
3166 void java_lang_ClassFrameInfo::compute_offsets() {
3167 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3168 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3169 }
3170
3171 #if INCLUDE_CDS
3172 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3173 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3174 }
3175 #endif
3176
3177 static int get_flags(const methodHandle& m) {
3178 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3179 if (m->is_object_initializer()) {
3180 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3181 } else {
3182 // Note: Static initializers can be here. Record them as plain methods.
3183 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3184 }
3185 if (m->caller_sensitive()) {
3186 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3187 }
3188 if (m->is_hidden()) {
3189 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3190 }
3191 assert((flags & 0xFF000000) == 0, "unexpected flags");
3192 return flags;
3193 }
3194
3195 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3196 return obj->obj_field(_classOrMemberName_offset);
3197 }
3198
3199 int java_lang_ClassFrameInfo::flags(oop obj) {
3200 return obj->int_field(_flags_offset);
3201 }
3202
3203 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3204 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3205 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3206 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3207 stackFrame->int_field_put(_flags_offset, flags);
3208 }
3209
3210 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3211 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3212 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3213 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3214 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3215 stackFrame->int_field_put(_flags_offset, flags);
3216 }
3217
3218
3219 // java_lang_StackFrameInfo
3220
3221 int java_lang_StackFrameInfo::_type_offset;
3222 int java_lang_StackFrameInfo::_name_offset;
3223 int java_lang_StackFrameInfo::_bci_offset;
3224 int java_lang_StackFrameInfo::_version_offset;
3225 int java_lang_StackFrameInfo::_contScope_offset;
3226
3227 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3228 macro(_type_offset, k, "type", object_signature, false); \
3229 macro(_name_offset, k, "name", string_signature, false); \
3230 macro(_bci_offset, k, "bci", int_signature, false); \
3231 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3232
3233 void java_lang_StackFrameInfo::compute_offsets() {
3234 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3235 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3236 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3237 }
3238
3239 #if INCLUDE_CDS
3240 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3241 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3242 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3243 }
3244 #endif
3245
3246 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3247 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3248 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3249 return method;
3250 }
3251
3252 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3253 // set Method* or mid/cpref
3254 HandleMark hm(THREAD);
3255 Handle cont_h(THREAD, cont);
3256 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3257
3258 // set bci
3259 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3260 // method may be redefined; store the version
3261 int version = method->constants()->version();
3262 assert((jushort)version == version, "version should be short");
3263 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3264
3265 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3266 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3267 }
3268
3269 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3270 ResourceMark rm(THREAD);
3271 HandleMark hm(THREAD);
3272
3273 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3274 InstanceKlass* holder = method->method_holder();
3275 short version = stackFrame->short_field(_version_offset);
3276 int bci = stackFrame->int_field(_bci_offset);
3277 Symbol* name = method->name();
3278 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3279 }
3280
3281 oop java_lang_StackFrameInfo::type(oop obj) {
3282 return obj->obj_field(_type_offset);
3283 }
3284
3285 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3286 obj->obj_field_put(_type_offset, value);
3287 }
3288
3289 oop java_lang_StackFrameInfo::name(oop obj) {
3290 return obj->obj_field(_name_offset);
3291 }
3292
3293 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3294 obj->obj_field_put(_name_offset, value);
3295 }
3296
3297 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3298 obj->short_field_put(_version_offset, value);
3299 }
3300
3301 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3302 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3303 obj->int_field_put(_bci_offset, value);
3304 }
3305
3306 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3307 obj->obj_field_put(_contScope_offset, value);
3308 }
3309
3310 int java_lang_LiveStackFrameInfo::_monitors_offset;
3311 int java_lang_LiveStackFrameInfo::_locals_offset;
3312 int java_lang_LiveStackFrameInfo::_operands_offset;
3313 int java_lang_LiveStackFrameInfo::_mode_offset;
3314
3315 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3316 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3317 macro(_locals_offset, k, "locals", object_array_signature, false); \
3318 macro(_operands_offset, k, "operands", object_array_signature, false); \
3319 macro(_mode_offset, k, "mode", int_signature, false)
3320
3321 void java_lang_LiveStackFrameInfo::compute_offsets() {
3322 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3323 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3324 }
3325
3326 #if INCLUDE_CDS
3327 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3328 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3329 }
3330 #endif
3331
3332 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3333 obj->obj_field_put(_monitors_offset, value);
3334 }
3335
3336 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3337 obj->obj_field_put(_locals_offset, value);
3338 }
3339
3340 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3341 obj->obj_field_put(_operands_offset, value);
3342 }
3343
3344 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3345 obj->int_field_put(_mode_offset, value);
3346 }
3347
3348
3349 // java_lang_AccessibleObject
3350
3351 int java_lang_reflect_AccessibleObject::_override_offset;
3352
3353 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3354 macro(_override_offset, k, "override", bool_signature, false)
3355
3356 void java_lang_reflect_AccessibleObject::compute_offsets() {
3357 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3358 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3359 }
3360
3361 #if INCLUDE_CDS
3362 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3363 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3364 }
3365 #endif
3366
3367 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3368 return (jboolean) reflect->bool_field(_override_offset);
3369 }
3370
3371 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3372 reflect->bool_field_put(_override_offset, (int) value);
3373 }
3374
3375 // java_lang_reflect_Method
3376
3377 int java_lang_reflect_Method::_clazz_offset;
3378 int java_lang_reflect_Method::_name_offset;
3379 int java_lang_reflect_Method::_returnType_offset;
3380 int java_lang_reflect_Method::_parameterTypes_offset;
3381 int java_lang_reflect_Method::_exceptionTypes_offset;
3382 int java_lang_reflect_Method::_slot_offset;
3383 int java_lang_reflect_Method::_modifiers_offset;
3384 int java_lang_reflect_Method::_signature_offset;
3385 int java_lang_reflect_Method::_annotations_offset;
3386 int java_lang_reflect_Method::_parameter_annotations_offset;
3387 int java_lang_reflect_Method::_annotation_default_offset;
3388
3389 #define METHOD_FIELDS_DO(macro) \
3390 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3391 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3392 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3393 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3394 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3395 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3396 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3397 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3398 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3399 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3400 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3401
3402 void java_lang_reflect_Method::compute_offsets() {
3403 InstanceKlass* k = vmClasses::reflect_Method_klass();
3404 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3405 }
3406
3407 #if INCLUDE_CDS
3408 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3409 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3410 }
3411 #endif
3412
3413 Handle java_lang_reflect_Method::create(TRAPS) {
3414 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3415 Klass* klass = vmClasses::reflect_Method_klass();
3416 // This class is eagerly initialized during VM initialization, since we keep a reference
3417 // to one of the methods
3418 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3419 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3420 }
3421
3422 oop java_lang_reflect_Method::clazz(oop reflect) {
3423 return reflect->obj_field(_clazz_offset);
3424 }
3425
3426 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3427 reflect->obj_field_put(_clazz_offset, value);
3428 }
3429
3430 int java_lang_reflect_Method::slot(oop reflect) {
3431 return reflect->int_field(_slot_offset);
3432 }
3433
3434 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3435 reflect->int_field_put(_slot_offset, value);
3436 }
3437
3438 void java_lang_reflect_Method::set_name(oop method, oop value) {
3439 method->obj_field_put(_name_offset, value);
3440 }
3441
3442 oop java_lang_reflect_Method::return_type(oop method) {
3443 return method->obj_field(_returnType_offset);
3444 }
3445
3446 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3447 method->obj_field_put(_returnType_offset, value);
3448 }
3449
3450 oop java_lang_reflect_Method::parameter_types(oop method) {
3451 return method->obj_field(_parameterTypes_offset);
3452 }
3453
3454 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3455 method->obj_field_put(_parameterTypes_offset, value);
3456 }
3457
3458 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3459 method->obj_field_put(_exceptionTypes_offset, value);
3460 }
3461
3462 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3463 method->int_field_put(_modifiers_offset, value);
3464 }
3465
3466 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3467 method->obj_field_put(_signature_offset, value);
3468 }
3469
3470 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3471 method->obj_field_put(_annotations_offset, value);
3472 }
3473
3474 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3475 method->obj_field_put(_parameter_annotations_offset, value);
3476 }
3477
3478 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3479 method->obj_field_put(_annotation_default_offset, value);
3480 }
3481
3482 int java_lang_reflect_Constructor::_clazz_offset;
3483 int java_lang_reflect_Constructor::_parameterTypes_offset;
3484 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3485 int java_lang_reflect_Constructor::_slot_offset;
3486 int java_lang_reflect_Constructor::_modifiers_offset;
3487 int java_lang_reflect_Constructor::_signature_offset;
3488 int java_lang_reflect_Constructor::_annotations_offset;
3489 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3490
3491 #define CONSTRUCTOR_FIELDS_DO(macro) \
3492 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3493 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3494 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3495 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3496 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3497 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3498 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3499 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3500
3501 void java_lang_reflect_Constructor::compute_offsets() {
3502 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3503 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3504 }
3505
3506 #if INCLUDE_CDS
3507 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3508 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3509 }
3510 #endif
3511
3512 Handle java_lang_reflect_Constructor::create(TRAPS) {
3513 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3514 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3515 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3516 InstanceKlass* ik = InstanceKlass::cast(k);
3517 // Ensure it is initialized
3518 ik->initialize(CHECK_NH);
3519 return ik->allocate_instance_handle(THREAD);
3520 }
3521
3522 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3523 return reflect->obj_field(_clazz_offset);
3524 }
3525
3526 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3527 reflect->obj_field_put(_clazz_offset, value);
3528 }
3529
3530 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3531 return constructor->obj_field(_parameterTypes_offset);
3532 }
3533
3534 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3535 constructor->obj_field_put(_parameterTypes_offset, value);
3536 }
3537
3538 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3539 constructor->obj_field_put(_exceptionTypes_offset, value);
3540 }
3541
3542 int java_lang_reflect_Constructor::slot(oop reflect) {
3543 return reflect->int_field(_slot_offset);
3544 }
3545
3546 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3547 reflect->int_field_put(_slot_offset, value);
3548 }
3549
3550 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3551 constructor->int_field_put(_modifiers_offset, value);
3552 }
3553
3554 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3555 constructor->obj_field_put(_signature_offset, value);
3556 }
3557
3558 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3559 constructor->obj_field_put(_annotations_offset, value);
3560 }
3561
3562 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3563 method->obj_field_put(_parameter_annotations_offset, value);
3564 }
3565
3566 int java_lang_reflect_Field::_clazz_offset;
3567 int java_lang_reflect_Field::_name_offset;
3568 int java_lang_reflect_Field::_type_offset;
3569 int java_lang_reflect_Field::_slot_offset;
3570 int java_lang_reflect_Field::_modifiers_offset;
3571 int java_lang_reflect_Field::_trusted_final_offset;
3572 int java_lang_reflect_Field::_signature_offset;
3573 int java_lang_reflect_Field::_annotations_offset;
3574
3575 #define FIELD_FIELDS_DO(macro) \
3576 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3577 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3578 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3579 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3580 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3581 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3582 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3583 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3584
3585 void java_lang_reflect_Field::compute_offsets() {
3586 InstanceKlass* k = vmClasses::reflect_Field_klass();
3587 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3588 }
3589
3590 #if INCLUDE_CDS
3591 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3592 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3593 }
3594 #endif
3595
3596 Handle java_lang_reflect_Field::create(TRAPS) {
3597 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3598 Symbol* name = vmSymbols::java_lang_reflect_Field();
3599 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3600 InstanceKlass* ik = InstanceKlass::cast(k);
3601 // Ensure it is initialized
3602 ik->initialize(CHECK_NH);
3603 return ik->allocate_instance_handle(THREAD);
3604 }
3605
3606 oop java_lang_reflect_Field::clazz(oop reflect) {
3607 return reflect->obj_field(_clazz_offset);
3608 }
3609
3610 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3611 reflect->obj_field_put(_clazz_offset, value);
3612 }
3613
3614 oop java_lang_reflect_Field::name(oop field) {
3615 return field->obj_field(_name_offset);
3616 }
3617
3618 void java_lang_reflect_Field::set_name(oop field, oop value) {
3619 field->obj_field_put(_name_offset, value);
3620 }
3621
3622 oop java_lang_reflect_Field::type(oop field) {
3623 return field->obj_field(_type_offset);
3624 }
3625
3626 void java_lang_reflect_Field::set_type(oop field, oop value) {
3627 field->obj_field_put(_type_offset, value);
3628 }
3629
3630 int java_lang_reflect_Field::slot(oop reflect) {
3631 return reflect->int_field(_slot_offset);
3632 }
3633
3634 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3635 reflect->int_field_put(_slot_offset, value);
3636 }
3637
3638 int java_lang_reflect_Field::modifiers(oop field) {
3639 return field->int_field(_modifiers_offset);
3640 }
3641
3642 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3643 field->int_field_put(_modifiers_offset, value);
3644 }
3645
3646 void java_lang_reflect_Field::set_trusted_final(oop field) {
3647 field->bool_field_put(_trusted_final_offset, true);
3648 }
3649
3650 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3651 field->obj_field_put(_signature_offset, value);
3652 }
3653
3654 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3655 field->obj_field_put(_annotations_offset, value);
3656 }
3657
3658 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3659 // Allocate java.lang.reflect.RecordComponent instance
3660 HandleMark hm(THREAD);
3661 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3662 assert(ik != nullptr, "must be loaded");
3663 ik->initialize(CHECK_NULL);
3664
3665 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3666
3667 Handle decl_class(THREAD, holder->java_mirror());
3668 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3669
3670 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3671 oop component_name = StringTable::intern(name, CHECK_NULL);
3672 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3673
3674 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3675 Handle component_type_h =
3676 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3677 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3678
3679 Method* accessor_method = nullptr;
3680 {
3681 // Prepend "()" to type to create the full method signature.
3682 ResourceMark rm(THREAD);
3683 int sig_len = type->utf8_length() + 3; // "()" and null char
3684 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3685 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3686 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3687 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3688 }
3689
3690 if (accessor_method != nullptr) {
3691 methodHandle method(THREAD, accessor_method);
3692 oop m = Reflection::new_method(method, false, CHECK_NULL);
3693 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3694 } else {
3695 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3696 }
3697
3698 int sig_index = component->generic_signature_index();
3699 if (sig_index > 0) {
3700 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3701 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3702 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3703 } else {
3704 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3705 }
3706
3707 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3708 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3709
3710 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3711 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3712
3713 return element();
3714 }
3715
3716 int reflect_ConstantPool::_oop_offset;
3717
3718 #define CONSTANTPOOL_FIELDS_DO(macro) \
3719 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3720
3721 void reflect_ConstantPool::compute_offsets() {
3722 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3723 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3724 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3725 }
3726
3727 #if INCLUDE_CDS
3728 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3729 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3730 }
3731 #endif
3732
3733 int java_lang_reflect_Parameter::_name_offset;
3734 int java_lang_reflect_Parameter::_modifiers_offset;
3735 int java_lang_reflect_Parameter::_index_offset;
3736 int java_lang_reflect_Parameter::_executable_offset;
3737
3738 #define PARAMETER_FIELDS_DO(macro) \
3739 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3740 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3741 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3742 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3743
3744 void java_lang_reflect_Parameter::compute_offsets() {
3745 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3746 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3747 }
3748
3749 #if INCLUDE_CDS
3750 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3751 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3752 }
3753 #endif
3754
3755 Handle java_lang_reflect_Parameter::create(TRAPS) {
3756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3757 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3758 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3759 InstanceKlass* ik = InstanceKlass::cast(k);
3760 // Ensure it is initialized
3761 ik->initialize(CHECK_NH);
3762 return ik->allocate_instance_handle(THREAD);
3763 }
3764
3765 oop java_lang_reflect_Parameter::name(oop param) {
3766 return param->obj_field(_name_offset);
3767 }
3768
3769 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3770 param->obj_field_put(_name_offset, value);
3771 }
3772
3773 int java_lang_reflect_Parameter::modifiers(oop param) {
3774 return param->int_field(_modifiers_offset);
3775 }
3776
3777 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3778 param->int_field_put(_modifiers_offset, value);
3779 }
3780
3781 int java_lang_reflect_Parameter::index(oop param) {
3782 return param->int_field(_index_offset);
3783 }
3784
3785 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3786 param->int_field_put(_index_offset, value);
3787 }
3788
3789 oop java_lang_reflect_Parameter::executable(oop param) {
3790 return param->obj_field(_executable_offset);
3791 }
3792
3793 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3794 param->obj_field_put(_executable_offset, value);
3795 }
3796
3797 // java_lang_Module
3798
3799 int java_lang_Module::_loader_offset;
3800 int java_lang_Module::_name_offset;
3801 int java_lang_Module::_module_entry_offset;
3802
3803 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3805 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3806 vmSymbols::java_lang_module_init_signature(),
3807 loader, module_name, CHECK_NH);
3808 }
3809
3810 #define MODULE_FIELDS_DO(macro) \
3811 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3812 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3813
3814 void java_lang_Module::compute_offsets() {
3815 InstanceKlass* k = vmClasses::Module_klass();
3816 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3817 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3818 }
3819
3820 #if INCLUDE_CDS
3821 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3822 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3823 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3824 }
3825 #endif
3826
3827 oop java_lang_Module::loader(oop module) {
3828 return module->obj_field(_loader_offset);
3829 }
3830
3831 void java_lang_Module::set_loader(oop module, oop value) {
3832 module->obj_field_put(_loader_offset, value);
3833 }
3834
3835 oop java_lang_Module::name(oop module) {
3836 return module->obj_field(_name_offset);
3837 }
3838
3839 void java_lang_Module::set_name(oop module, oop value) {
3840 module->obj_field_put(_name_offset, value);
3841 }
3842
3843 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3844 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3845 assert(module != nullptr, "module can't be null");
3846 assert(oopDesc::is_oop(module), "module must be oop");
3847
3848 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3849 return module_entry;
3850 }
3851
3852 ModuleEntry* java_lang_Module::module_entry(oop module) {
3853 ModuleEntry* module_entry = module_entry_raw(module);
3854 if (module_entry == nullptr) {
3855 // If the inject field containing the ModuleEntry* is null then return the
3856 // class loader's unnamed module.
3857 oop loader = java_lang_Module::loader(module);
3858 Handle h_loader = Handle(Thread::current(), loader);
3859 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3860 return loader_cld->unnamed_module();
3861 }
3862 return module_entry;
3863 }
3864
3865 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3866 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3867 assert(module != nullptr, "module can't be null");
3868 assert(oopDesc::is_oop(module), "module must be oop");
3869 module->address_field_put(_module_entry_offset, (address)module_entry);
3870 }
3871
3872 Handle reflect_ConstantPool::create(TRAPS) {
3873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3874 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3875 // Ensure it is initialized
3876 k->initialize(CHECK_NH);
3877 return k->allocate_instance_handle(THREAD);
3878 }
3879
3880
3881 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3882 oop mirror = value->pool_holder()->java_mirror();
3883 // Save the mirror to get back the constant pool.
3884 reflect->obj_field_put(_oop_offset, mirror);
3885 }
3886
3887 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3888
3889 oop mirror = reflect->obj_field(_oop_offset);
3890 Klass* k = java_lang_Class::as_Klass(mirror);
3891 assert(k->is_instance_klass(), "Must be");
3892
3893 // Get the constant pool back from the klass. Since class redefinition
3894 // merges the new constant pool into the old, this is essentially the
3895 // same constant pool as the original. If constant pool merging is
3896 // no longer done in the future, this will have to change to save
3897 // the original.
3898 return InstanceKlass::cast(k)->constants();
3899 }
3900
3901
3902 // Support for java_lang_ref_Reference
3903
3904 bool java_lang_ref_Reference::_offsets_initialized;
3905
3906 int java_lang_ref_Reference::_referent_offset;
3907 int java_lang_ref_Reference::_queue_offset;
3908 int java_lang_ref_Reference::_next_offset;
3909 int java_lang_ref_Reference::_discovered_offset;
3910
3911 #define REFERENCE_FIELDS_DO(macro) \
3912 macro(_referent_offset, k, "referent", object_signature, false); \
3913 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3914 macro(_next_offset, k, "next", reference_signature, false); \
3915 macro(_discovered_offset, k, "discovered", reference_signature, false);
3916
3917 void java_lang_ref_Reference::compute_offsets() {
3918 if (_offsets_initialized) {
3919 return;
3920 }
3921 _offsets_initialized = true;
3922 InstanceKlass* k = vmClasses::Reference_klass();
3923 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3924 }
3925
3926 #if INCLUDE_CDS
3927 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3928 f->do_bool(&_offsets_initialized);
3929 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3930 }
3931 #endif
3932
3933 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3934 assert(obj != nullptr, "sanity");
3935 if (offset != _referent_offset) {
3936 return false;
3937 }
3938
3939 Klass* k = obj->klass();
3940 if (!k->is_instance_klass()) {
3941 return false;
3942 }
3943
3944 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3945 bool is_reference = ik->reference_type() != REF_NONE;
3946 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3947 return is_reference;
3948 }
3949
3950 int java_lang_boxing_object::_value_offset;
3951 int java_lang_boxing_object::_long_value_offset;
3952
3953 #define BOXING_FIELDS_DO(macro) \
3954 macro(_value_offset, integerKlass, "value", int_signature, false); \
3955 macro(_long_value_offset, longKlass, "value", long_signature, false);
3956
3957 void java_lang_boxing_object::compute_offsets() {
3958 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3959 InstanceKlass* longKlass = vmClasses::Long_klass();
3960 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3961 }
3962
3963 #if INCLUDE_CDS
3964 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3965 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3966 }
3967 #endif
3968
3969 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3970 Klass* k = vmClasses::box_klass(type);
3971 if (k == nullptr) return nullptr;
3972 InstanceKlass* ik = InstanceKlass::cast(k);
3973 if (!ik->is_initialized()) {
3974 ik->initialize(CHECK_NULL);
3975 }
3976 return ik->allocate_instance(THREAD);
3977 }
3978
3979
3980 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3981 oop box = initialize_and_allocate(type, CHECK_NULL);
3982 if (box == nullptr) return nullptr;
3983 switch (type) {
3984 case T_BOOLEAN:
3985 box->bool_field_put(_value_offset, value->z);
3986 break;
3987 case T_CHAR:
3988 box->char_field_put(_value_offset, value->c);
3989 break;
3990 case T_FLOAT:
3991 box->float_field_put(_value_offset, value->f);
3992 break;
3993 case T_DOUBLE:
3994 box->double_field_put(_long_value_offset, value->d);
3995 break;
3996 case T_BYTE:
3997 box->byte_field_put(_value_offset, value->b);
3998 break;
3999 case T_SHORT:
4000 box->short_field_put(_value_offset, value->s);
4001 break;
4002 case T_INT:
4003 box->int_field_put(_value_offset, value->i);
4004 break;
4005 case T_LONG:
4006 box->long_field_put(_long_value_offset, value->j);
4007 break;
4008 default:
4009 return nullptr;
4010 }
4011 return box;
4012 }
4013
4014
4015 BasicType java_lang_boxing_object::basic_type(oop box) {
4016 if (box == nullptr) return T_ILLEGAL;
4017 BasicType type = vmClasses::box_klass_type(box->klass());
4018 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4019 return T_ILLEGAL;
4020 return type;
4021 }
4022
4023
4024 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4025 BasicType type = vmClasses::box_klass_type(box->klass());
4026 switch (type) {
4027 case T_BOOLEAN:
4028 value->z = box->bool_field(_value_offset);
4029 break;
4030 case T_CHAR:
4031 value->c = box->char_field(_value_offset);
4032 break;
4033 case T_FLOAT:
4034 value->f = box->float_field(_value_offset);
4035 break;
4036 case T_DOUBLE:
4037 value->d = box->double_field(_long_value_offset);
4038 break;
4039 case T_BYTE:
4040 value->b = box->byte_field(_value_offset);
4041 break;
4042 case T_SHORT:
4043 value->s = box->short_field(_value_offset);
4044 break;
4045 case T_INT:
4046 value->i = box->int_field(_value_offset);
4047 break;
4048 case T_LONG:
4049 value->j = box->long_field(_long_value_offset);
4050 break;
4051 default:
4052 return T_ILLEGAL;
4053 } // end switch
4054 return type;
4055 }
4056
4057
4058 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4059 BasicType type = vmClasses::box_klass_type(box->klass());
4060 switch (type) {
4061 case T_BOOLEAN:
4062 box->bool_field_put(_value_offset, value->z);
4063 break;
4064 case T_CHAR:
4065 box->char_field_put(_value_offset, value->c);
4066 break;
4067 case T_FLOAT:
4068 box->float_field_put(_value_offset, value->f);
4069 break;
4070 case T_DOUBLE:
4071 box->double_field_put(_long_value_offset, value->d);
4072 break;
4073 case T_BYTE:
4074 box->byte_field_put(_value_offset, value->b);
4075 break;
4076 case T_SHORT:
4077 box->short_field_put(_value_offset, value->s);
4078 break;
4079 case T_INT:
4080 box->int_field_put(_value_offset, value->i);
4081 break;
4082 case T_LONG:
4083 box->long_field_put(_long_value_offset, value->j);
4084 break;
4085 default:
4086 return T_ILLEGAL;
4087 } // end switch
4088 return type;
4089 }
4090
4091
4092 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4093 switch (type) {
4094 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4095 case T_CHAR: st->print("%d", value->c); break;
4096 case T_BYTE: st->print("%d", value->b); break;
4097 case T_SHORT: st->print("%d", value->s); break;
4098 case T_INT: st->print("%d", value->i); break;
4099 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4100 case T_FLOAT: st->print("%f", value->f); break;
4101 case T_DOUBLE: st->print("%lf", value->d); break;
4102 default: st->print("type %d?", type); break;
4103 }
4104 }
4105
4106
4107 // Support for java_lang_ref_SoftReference
4108 //
4109
4110 int java_lang_ref_SoftReference::_timestamp_offset;
4111 int java_lang_ref_SoftReference::_static_clock_offset;
4112
4113 #define SOFTREFERENCE_FIELDS_DO(macro) \
4114 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
4115 macro(_static_clock_offset, k, "clock", long_signature, true)
4116
4117 void java_lang_ref_SoftReference::compute_offsets() {
4118 InstanceKlass* k = vmClasses::SoftReference_klass();
4119 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4120 }
4121
4122 #if INCLUDE_CDS
4123 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
4124 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4125 }
4126 #endif
4127
4128 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
4129 return ref->long_field(_timestamp_offset);
4130 }
4131
4132 jlong java_lang_ref_SoftReference::clock() {
4133 InstanceKlass* ik = vmClasses::SoftReference_klass();
4134 oop base = ik->static_field_base_raw();
4135 return base->long_field(_static_clock_offset);
4136 }
4137
4138 void java_lang_ref_SoftReference::set_clock(jlong value) {
4139 InstanceKlass* ik = vmClasses::SoftReference_klass();
4140 oop base = ik->static_field_base_raw();
4141 base->long_field_put(_static_clock_offset, value);
4142 }
4143
4144 // Support for java_lang_invoke_DirectMethodHandle
4145
4146 int java_lang_invoke_DirectMethodHandle::_member_offset;
4147
4148 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4149 oop member_name = nullptr;
4150 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4151 "a DirectMethodHandle oop is expected");
4152 return dmh->obj_field(_member_offset);
4153 }
4154
4155 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4156 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4157
4158 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4159 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4160 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4161 }
4162
4163 #if INCLUDE_CDS
4164 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4165 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4166 }
4167 #endif
4168
4169 // Support for java_lang_invoke_MethodHandle
4170
4171 int java_lang_invoke_MethodHandle::_type_offset;
4172 int java_lang_invoke_MethodHandle::_form_offset;
4173
4174 int java_lang_invoke_MemberName::_clazz_offset;
4175 int java_lang_invoke_MemberName::_name_offset;
4176 int java_lang_invoke_MemberName::_type_offset;
4177 int java_lang_invoke_MemberName::_flags_offset;
4178 int java_lang_invoke_MemberName::_method_offset;
4179 int java_lang_invoke_MemberName::_vmindex_offset;
4180
4181 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4182 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4183
4184 int java_lang_invoke_LambdaForm::_vmentry_offset;
4185
4186 #define METHODHANDLE_FIELDS_DO(macro) \
4187 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4188 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4189
4190 void java_lang_invoke_MethodHandle::compute_offsets() {
4191 InstanceKlass* k = vmClasses::MethodHandle_klass();
4192 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4193 }
4194
4195 #if INCLUDE_CDS
4196 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4197 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4198 }
4199 #endif
4200
4201 #define MEMBERNAME_FIELDS_DO(macro) \
4202 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4203 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4204 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4205 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4206 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4207
4208 void java_lang_invoke_MemberName::compute_offsets() {
4209 InstanceKlass* k = vmClasses::MemberName_klass();
4210 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4211 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4212 }
4213
4214 #if INCLUDE_CDS
4215 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4216 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4217 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4218 }
4219 #endif
4220
4221 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4222 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4223
4224 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4225 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4226 assert(k != nullptr, "jdk mismatch");
4227 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4228 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4229 }
4230
4231 #if INCLUDE_CDS
4232 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4233 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4234 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4235 }
4236 #endif
4237
4238 #define LAMBDAFORM_FIELDS_DO(macro) \
4239 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4240
4241 void java_lang_invoke_LambdaForm::compute_offsets() {
4242 InstanceKlass* k = vmClasses::LambdaForm_klass();
4243 assert (k != nullptr, "jdk mismatch");
4244 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4245 }
4246
4247 #if INCLUDE_CDS
4248 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4249 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4250 }
4251 #endif
4252
4253 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4254 return obj != nullptr && is_subclass(obj->klass());
4255 }
4256
4257 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4258 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4259
4260 #define NEP_FIELDS_DO(macro) \
4261 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4262 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4263
4264 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4265 return obj != nullptr && is_subclass(obj->klass());
4266 }
4267
4268 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4269 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4270 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4271 }
4272
4273 #if INCLUDE_CDS
4274 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4275 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4276 }
4277 #endif
4278
4279 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4280 return entry->obj_field(_method_type_offset);
4281 }
4282
4283 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4284 return entry->long_field(_downcall_stub_address_offset);
4285 }
4286
4287 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4288 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4289 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4290 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4291 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4292 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4293 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4294
4295 #define ABIDescriptor_FIELDS_DO(macro) \
4296 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4297 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4298 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4299 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4300 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4301 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4302 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4303
4304 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4305 return obj != nullptr && is_subclass(obj->klass());
4306 }
4307
4308 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4309 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4310 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4311 }
4312
4313 #if INCLUDE_CDS
4314 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4315 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4316 }
4317 #endif
4318
4319 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4320 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4321 }
4322
4323 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4324 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4325 }
4326
4327 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4328 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4329 }
4330
4331 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4332 return entry->int_field(_stackAlignment_offset);
4333 }
4334
4335 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4336 return entry->int_field(_shadowSpace_offset);
4337 }
4338
4339 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4340 return entry->obj_field(_scratch1_offset);
4341 }
4342
4343 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4344 return entry->obj_field(_scratch2_offset);
4345 }
4346
4347 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4348 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4349 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4350 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4351
4352 #define VMStorage_FIELDS_DO(macro) \
4353 macro(_type_offset, k, "type", byte_signature, false); \
4354 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4355 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4356 macro(_debugName_offset, k, "debugName", string_signature, false); \
4357
4358 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4359 return obj != nullptr && is_subclass(obj->klass());
4360 }
4361
4362 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4363 InstanceKlass* k = vmClasses::VMStorage_klass();
4364 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4365 }
4366
4367 #if INCLUDE_CDS
4368 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4369 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4370 }
4371 #endif
4372
4373 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4374 return entry->byte_field(_type_offset);
4375 }
4376
4377 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4378 return entry->int_field(_indexOrOffset_offset);
4379 }
4380
4381 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4382 return entry->short_field(_segmentMaskOrSize_offset);
4383 }
4384
4385 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4386 return entry->obj_field(_debugName_offset);
4387 }
4388
4389 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4390 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4391
4392 #define CallConv_FIELDS_DO(macro) \
4393 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4394 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4395
4396 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4397 return obj != nullptr && is_subclass(obj->klass());
4398 }
4399
4400 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4401 InstanceKlass* k = vmClasses::CallConv_klass();
4402 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4403 }
4404
4405 #if INCLUDE_CDS
4406 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4407 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4408 }
4409 #endif
4410
4411 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4412 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4413 }
4414
4415 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4416 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4417 }
4418
4419 oop java_lang_invoke_MethodHandle::type(oop mh) {
4420 return mh->obj_field(_type_offset);
4421 }
4422
4423 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4424 mh->obj_field_put(_type_offset, mtype);
4425 }
4426
4427 oop java_lang_invoke_MethodHandle::form(oop mh) {
4428 assert(_form_offset != 0, "");
4429 return mh->obj_field(_form_offset);
4430 }
4431
4432 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4433 assert(_form_offset != 0, "");
4434 mh->obj_field_put(_form_offset, lform);
4435 }
4436
4437 /// MemberName accessors
4438
4439 oop java_lang_invoke_MemberName::clazz(oop mname) {
4440 assert(is_instance(mname), "wrong type");
4441 return mname->obj_field(_clazz_offset);
4442 }
4443
4444 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4445 assert(is_instance(mname), "wrong type");
4446 mname->obj_field_put(_clazz_offset, clazz);
4447 }
4448
4449 oop java_lang_invoke_MemberName::name(oop mname) {
4450 assert(is_instance(mname), "wrong type");
4451 return mname->obj_field(_name_offset);
4452 }
4453
4454 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4455 assert(is_instance(mname), "wrong type");
4456 mname->obj_field_put(_name_offset, name);
4457 }
4458
4459 oop java_lang_invoke_MemberName::type(oop mname) {
4460 assert(is_instance(mname), "wrong type");
4461 return mname->obj_field(_type_offset);
4462 }
4463
4464 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4465 assert(is_instance(mname), "wrong type");
4466 mname->obj_field_put(_type_offset, type);
4467 }
4468
4469 int java_lang_invoke_MemberName::flags(oop mname) {
4470 assert(is_instance(mname), "wrong type");
4471 return mname->int_field(_flags_offset);
4472 }
4473
4474 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4475 assert(is_instance(mname), "wrong type");
4476 mname->int_field_put(_flags_offset, flags);
4477 }
4478
4479
4480 // Return vmtarget from ResolvedMethodName method field through indirection
4481 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4482 assert(is_instance(mname), "wrong type");
4483 oop method = mname->obj_field(_method_offset);
4484 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4485 }
4486
4487 bool java_lang_invoke_MemberName::is_method(oop mname) {
4488 assert(is_instance(mname), "must be MemberName");
4489 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4490 }
4491
4492 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4493 assert(is_instance(mname), "wrong type");
4494 mname->obj_field_put(_method_offset, resolved_method);
4495 }
4496
4497 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4498 assert(is_instance(mname), "wrong type");
4499 return (intptr_t) mname->address_field(_vmindex_offset);
4500 }
4501
4502 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4503 assert(is_instance(mname), "wrong type");
4504 mname->address_field_put(_vmindex_offset, (address) index);
4505 }
4506
4507
4508 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4509 assert(is_instance(resolved_method), "wrong type");
4510 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4511 assert(m->is_method(), "must be");
4512 return m;
4513 }
4514
4515 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4516 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4517 assert(is_instance(resolved_method), "wrong type");
4518 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4519 }
4520
4521 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4522 assert(is_instance(resolved_method), "wrong type");
4523 resolved_method->obj_field_put(_vmholder_offset, holder);
4524 }
4525
4526 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4527 const Method* method = m();
4528
4529 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4530 oop resolved_method = ResolvedMethodTable::find_method(method);
4531 if (resolved_method != nullptr) {
4532 return resolved_method;
4533 }
4534
4535 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4536 if (!k->is_initialized()) {
4537 k->initialize(CHECK_NULL);
4538 }
4539
4540 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4541
4542 NoSafepointVerifier nsv;
4543
4544 if (method->is_old()) {
4545 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4546 method->get_new_method();
4547 }
4548
4549 InstanceKlass* holder = method->method_holder();
4550
4551 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4552 // Add a reference to the loader (actually mirror because hidden classes may not have
4553 // distinct loaders) to ensure the metadata is kept alive.
4554 // This mirror may be different than the one in clazz field.
4555 set_vmholder(new_resolved_method, holder->java_mirror());
4556
4557 // Set flag in class to indicate this InstanceKlass has entries in the table
4558 // to avoid walking table during redefinition if none of the redefined classes
4559 // have any membernames in the table.
4560 holder->set_has_resolved_methods();
4561
4562 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4563 }
4564
4565 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4566 assert(is_instance(lform), "wrong type");
4567 return lform->obj_field(_vmentry_offset);
4568 }
4569
4570
4571 // Support for java_lang_invoke_MethodType
4572
4573 int java_lang_invoke_MethodType::_rtype_offset;
4574 int java_lang_invoke_MethodType::_ptypes_offset;
4575
4576 #define METHODTYPE_FIELDS_DO(macro) \
4577 macro(_rtype_offset, k, "rtype", class_signature, false); \
4578 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4579
4580 void java_lang_invoke_MethodType::compute_offsets() {
4581 InstanceKlass* k = vmClasses::MethodType_klass();
4582 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4583 }
4584
4585 #if INCLUDE_CDS
4586 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4587 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4588 }
4589 #endif
4590
4591 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4592 st->print("(");
4593 objArrayOop pts = ptypes(mt);
4594 if (pts != nullptr) {
4595 for (int i = 0, limit = pts->length(); i < limit; i++) {
4596 java_lang_Class::print_signature(pts->obj_at(i), st);
4597 }
4598 } else {
4599 st->print("null");
4600 }
4601 st->print(")");
4602 oop rt = rtype(mt);
4603 if (rt != nullptr) {
4604 java_lang_Class::print_signature(rt, st);
4605 } else {
4606 st->print("null");
4607 }
4608 }
4609
4610 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4611 ResourceMark rm;
4612 stringStream buffer(128);
4613 print_signature(mt, &buffer);
4614 const char* sigstr = buffer.base();
4615 int siglen = (int) buffer.size();
4616 Symbol *name;
4617 if (!intern_if_not_found) {
4618 name = SymbolTable::probe(sigstr, siglen);
4619 } else {
4620 name = SymbolTable::new_symbol(sigstr, siglen);
4621 }
4622 return name;
4623 }
4624
4625 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4626 if (mt1 == mt2)
4627 return true;
4628 if (rtype(mt1) != rtype(mt2))
4629 return false;
4630 if (ptype_count(mt1) != ptype_count(mt2))
4631 return false;
4632 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4633 if (ptype(mt1, i) != ptype(mt2, i))
4634 return false;
4635 }
4636 return true;
4637 }
4638
4639 oop java_lang_invoke_MethodType::rtype(oop mt) {
4640 assert(is_instance(mt), "must be a MethodType");
4641 return mt->obj_field(_rtype_offset);
4642 }
4643
4644 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4645 assert(is_instance(mt), "must be a MethodType");
4646 return (objArrayOop) mt->obj_field(_ptypes_offset);
4647 }
4648
4649 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4650 return ptypes(mt)->obj_at(idx);
4651 }
4652
4653 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4654 return ptypes(mt)->length();
4655 }
4656
4657 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4658 objArrayOop pts = ptypes(mt);
4659 int count = pts->length();
4660 int slots = 0;
4661 for (int i = 0; i < count; i++) {
4662 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4663 slots += type2size[bt];
4664 }
4665 return slots;
4666 }
4667
4668 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4669 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4670 return type2size[bt];
4671 }
4672
4673
4674 // Support for java_lang_invoke_CallSite
4675
4676 int java_lang_invoke_CallSite::_target_offset;
4677 int java_lang_invoke_CallSite::_context_offset;
4678
4679 #define CALLSITE_FIELDS_DO(macro) \
4680 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4681 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4682
4683 void java_lang_invoke_CallSite::compute_offsets() {
4684 InstanceKlass* k = vmClasses::CallSite_klass();
4685 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4686 }
4687
4688 #if INCLUDE_CDS
4689 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4690 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4691 }
4692 #endif
4693
4694 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4695 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4696
4697 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4698 return dep_oop;
4699 }
4700
4701 // Support for java_lang_invoke_ConstantCallSite
4702
4703 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4704
4705 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4706 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4707
4708 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4709 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4710 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4711 }
4712
4713 #if INCLUDE_CDS
4714 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4715 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4716 }
4717 #endif
4718
4719 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4720
4721 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4722 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4723
4724 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4725 InstanceKlass* k = vmClasses::Context_klass();
4726 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4727 }
4728
4729 #if INCLUDE_CDS
4730 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4731 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4732 }
4733 #endif
4734
4735 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4736 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4737 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4738 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4739 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4740 return dep_ctx;
4741 }
4742
4743 // Support for java_lang_ClassLoader
4744
4745 int java_lang_ClassLoader::_loader_data_offset;
4746 int java_lang_ClassLoader::_parallelCapable_offset;
4747 int java_lang_ClassLoader::_name_offset;
4748 int java_lang_ClassLoader::_nameAndId_offset;
4749 int java_lang_ClassLoader::_unnamedModule_offset;
4750 int java_lang_ClassLoader::_parent_offset;
4751
4752 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4753 assert(loader != nullptr, "loader must not be null");
4754 assert(oopDesc::is_oop(loader), "loader must be oop");
4755 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4756 }
4757
4758 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4759 assert(loader != nullptr, "loader must not be null");
4760 assert(oopDesc::is_oop(loader), "loader must be oop");
4761 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4762 }
4763
4764 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4765 assert(loader != nullptr, "loader must not be null");
4766 assert(oopDesc::is_oop(loader), "loader must be oop");
4767 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4768 }
4769
4770 #define CLASSLOADER_FIELDS_DO(macro) \
4771 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4772 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4773 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4774 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4775 macro(_parent_offset, k1, "parent", classloader_signature, false)
4776
4777 void java_lang_ClassLoader::compute_offsets() {
4778 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4779 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4780
4781 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4782 }
4783
4784 #if INCLUDE_CDS
4785 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4786 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4787 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4788 }
4789 #endif
4790
4791 oop java_lang_ClassLoader::parent(oop loader) {
4792 assert(is_instance(loader), "loader must be oop");
4793 return loader->obj_field(_parent_offset);
4794 }
4795
4796 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4797 assert(is_instance(loader), "loader must be oop");
4798 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4799 }
4800
4801 // Returns the name field of this class loader. If the name field has not
4802 // been set, null will be returned.
4803 oop java_lang_ClassLoader::name(oop loader) {
4804 assert(is_instance(loader), "loader must be oop");
4805 return loader->obj_field(_name_offset);
4806 }
4807
4808 // Returns the nameAndId field of this class loader. The format is
4809 // as follows:
4810 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4811 // If the defining loader has no name then <qualified-class-name> @<id>
4812 // If built-in loader, then omit '@<id>' as there is only one instance.
4813 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4814 oop java_lang_ClassLoader::nameAndId(oop loader) {
4815 assert(is_instance(loader), "loader must be oop");
4816 return loader->obj_field(_nameAndId_offset);
4817 }
4818
4819 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4820 assert(is_instance(loader), "loader must be oop");
4821 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4822 oop acl = loader;
4823 debug_only(jint loop_count = 0);
4824 // This loop taken verbatim from ClassLoader.java:
4825 do {
4826 acl = parent(acl);
4827 if (cl == acl) {
4828 return true;
4829 }
4830 assert(++loop_count > 0, "loop_count overflow");
4831 } while (acl != nullptr);
4832 return false;
4833 }
4834
4835 bool java_lang_ClassLoader::is_instance(oop obj) {
4836 return obj != nullptr && is_subclass(obj->klass());
4837 }
4838
4839
4840 // For class loader classes, parallelCapable defined
4841 // based on non-null field
4842 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4843 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4844 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4845 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4846 }
4847
4848 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4849 oop cl = SystemDictionary::java_system_loader();
4850 while(cl != nullptr) {
4851 if (cl == loader) return true;
4852 cl = parent(cl);
4853 }
4854 return false;
4855 }
4856
4857 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4858 assert(is_instance(loader), "loader must be oop");
4859 return loader->obj_field(_unnamedModule_offset);
4860 }
4861
4862 // Support for java_lang_System
4863 //
4864
4865 int java_lang_System::_static_in_offset;
4866 int java_lang_System::_static_out_offset;
4867 int java_lang_System::_static_err_offset;
4868
4869 #define SYSTEM_FIELDS_DO(macro) \
4870 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4871 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4872 macro(_static_err_offset, k, "err", print_stream_signature, true);
4873
4874 void java_lang_System::compute_offsets() {
4875 InstanceKlass* k = vmClasses::System_klass();
4876 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4877 }
4878
4879 #if INCLUDE_CDS
4880 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4881 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4882 }
4883 #endif
4884
4885 // Support for jdk_internal_misc_UnsafeConstants
4886 //
4887 class UnsafeConstantsFixup : public FieldClosure {
4888 private:
4889 int _address_size;
4890 int _page_size;
4891 bool _big_endian;
4892 bool _use_unaligned_access;
4893 int _data_cache_line_flush_size;
4894 public:
4895 UnsafeConstantsFixup() {
4896 // round up values for all static final fields
4897 _address_size = sizeof(void*);
4898 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4899 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4900 _use_unaligned_access = UseUnalignedAccesses;
4901 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4902 }
4903
4904 void do_field(fieldDescriptor* fd) {
4905 oop mirror = fd->field_holder()->java_mirror();
4906 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4907 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4908 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4909 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4910 if (fd->name() == vmSymbols::address_size_name()) {
4911 mirror->int_field_put(fd->offset(), _address_size);
4912 } else if (fd->name() == vmSymbols::page_size_name()) {
4913 mirror->int_field_put(fd->offset(), _page_size);
4914 } else if (fd->name() == vmSymbols::big_endian_name()) {
4915 mirror->bool_field_put(fd->offset(), _big_endian);
4916 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4917 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4918 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4919 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4920 } else {
4921 assert(false, "unexpected UnsafeConstants field");
4922 }
4923 }
4924 };
4925
4926 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4927 UnsafeConstantsFixup fixup;
4928 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4929 }
4930
4931
4932 // java_lang_StackTraceElement
4933
4934 int java_lang_StackTraceElement::_methodName_offset;
4935 int java_lang_StackTraceElement::_fileName_offset;
4936 int java_lang_StackTraceElement::_lineNumber_offset;
4937 int java_lang_StackTraceElement::_moduleName_offset;
4938 int java_lang_StackTraceElement::_moduleVersion_offset;
4939 int java_lang_StackTraceElement::_classLoaderName_offset;
4940 int java_lang_StackTraceElement::_declaringClass_offset;
4941 int java_lang_StackTraceElement::_declaringClassObject_offset;
4942
4943 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4944 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4945 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4946 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4947 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4948 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4949 macro(_methodName_offset, k, "methodName", string_signature, false); \
4950 macro(_fileName_offset, k, "fileName", string_signature, false); \
4951 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4952
4953 // Support for java_lang_StackTraceElement
4954 void java_lang_StackTraceElement::compute_offsets() {
4955 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4956 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4957 }
4958
4959 #if INCLUDE_CDS
4960 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4961 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4962 }
4963 #endif
4964
4965 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4966 element->obj_field_put(_fileName_offset, value);
4967 }
4968
4969 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4970 element->obj_field_put(_declaringClass_offset, value);
4971 }
4972
4973 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4974 element->obj_field_put(_methodName_offset, value);
4975 }
4976
4977 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4978 element->int_field_put(_lineNumber_offset, value);
4979 }
4980
4981 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4982 element->obj_field_put(_moduleName_offset, value);
4983 }
4984
4985 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4986 element->obj_field_put(_moduleVersion_offset, value);
4987 }
4988
4989 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4990 element->obj_field_put(_classLoaderName_offset, value);
4991 }
4992
4993 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4994 element->obj_field_put(_declaringClassObject_offset, value);
4995 }
4996
4997
4998 // java_lang_AssertionStatusDirectives
4999
5000 int java_lang_AssertionStatusDirectives::_classes_offset;
5001 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
5002 int java_lang_AssertionStatusDirectives::_packages_offset;
5003 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
5004 int java_lang_AssertionStatusDirectives::_deflt_offset;
5005
5006 // Support for java Assertions - java_lang_AssertionStatusDirectives.
5007 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
5008 macro(_classes_offset, k, "classes", string_array_signature, false); \
5009 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
5010 macro(_packages_offset, k, "packages", string_array_signature, false); \
5011 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
5012 macro(_deflt_offset, k, "deflt", bool_signature, false)
5013
5014 void java_lang_AssertionStatusDirectives::compute_offsets() {
5015 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
5016 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5017 }
5018
5019 #if INCLUDE_CDS
5020 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
5021 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5022 }
5023 #endif
5024
5025 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
5026 o->obj_field_put(_classes_offset, val);
5027 }
5028
5029 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
5030 o->obj_field_put(_classEnabled_offset, val);
5031 }
5032
5033 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
5034 o->obj_field_put(_packages_offset, val);
5035 }
5036
5037 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
5038 o->obj_field_put(_packageEnabled_offset, val);
5039 }
5040
5041 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
5042 o->bool_field_put(_deflt_offset, val);
5043 }
5044
5045 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5046
5047 #define AOS_FIELDS_DO(macro) \
5048 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5049
5050 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5051 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5052 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5053 }
5054
5055 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5056 assert(_owner_offset != 0, "Must be initialized");
5057 return obj->obj_field(_owner_offset);
5058 }
5059
5060 #if INCLUDE_CDS
5061 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5062 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5063 }
5064 #endif
5065
5066 int vector_VectorPayload::_payload_offset;
5067
5068 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5069 macro(_payload_offset, k, "payload", object_signature, false)
5070
5071 void vector_VectorPayload::compute_offsets() {
5072 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5073 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5074 }
5075
5076 #if INCLUDE_CDS
5077 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5078 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5079 }
5080 #endif
5081
5082 void vector_VectorPayload::set_payload(oop o, oop val) {
5083 o->obj_field_put(_payload_offset, val);
5084 }
5085
5086 bool vector_VectorPayload::is_instance(oop obj) {
5087 return obj != nullptr && is_subclass(obj->klass());
5088 }
5089
5090 int java_lang_Integer_IntegerCache::_static_cache_offset;
5091 int java_lang_Long_LongCache::_static_cache_offset;
5092 int java_lang_Character_CharacterCache::_static_cache_offset;
5093 int java_lang_Short_ShortCache::_static_cache_offset;
5094 int java_lang_Byte_ByteCache::_static_cache_offset;
5095
5096 #define INTEGER_CACHE_FIELDS_DO(macro) \
5097 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5098
5099 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5100 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5101 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5102 }
5103
5104 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5105 oop base = ik->static_field_base_raw();
5106 return objArrayOop(base->obj_field(_static_cache_offset));
5107 }
5108
5109 Symbol* java_lang_Integer_IntegerCache::symbol() {
5110 return vmSymbols::java_lang_Integer_IntegerCache();
5111 }
5112
5113 #if INCLUDE_CDS
5114 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5115 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5116 }
5117 #endif
5118 #undef INTEGER_CACHE_FIELDS_DO
5119
5120 jint java_lang_Integer::value(oop obj) {
5121 jvalue v;
5122 java_lang_boxing_object::get_value(obj, &v);
5123 return v.i;
5124 }
5125
5126 #define LONG_CACHE_FIELDS_DO(macro) \
5127 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5128
5129 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5130 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5131 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5132 }
5133
5134 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5135 oop base = ik->static_field_base_raw();
5136 return objArrayOop(base->obj_field(_static_cache_offset));
5137 }
5138
5139 Symbol* java_lang_Long_LongCache::symbol() {
5140 return vmSymbols::java_lang_Long_LongCache();
5141 }
5142
5143 #if INCLUDE_CDS
5144 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5145 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5146 }
5147 #endif
5148 #undef LONG_CACHE_FIELDS_DO
5149
5150 jlong java_lang_Long::value(oop obj) {
5151 jvalue v;
5152 java_lang_boxing_object::get_value(obj, &v);
5153 return v.j;
5154 }
5155
5156 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5157 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5158
5159 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5160 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5161 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5162 }
5163
5164 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5165 oop base = ik->static_field_base_raw();
5166 return objArrayOop(base->obj_field(_static_cache_offset));
5167 }
5168
5169 Symbol* java_lang_Character_CharacterCache::symbol() {
5170 return vmSymbols::java_lang_Character_CharacterCache();
5171 }
5172
5173 #if INCLUDE_CDS
5174 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5175 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5176 }
5177 #endif
5178 #undef CHARACTER_CACHE_FIELDS_DO
5179
5180 jchar java_lang_Character::value(oop obj) {
5181 jvalue v;
5182 java_lang_boxing_object::get_value(obj, &v);
5183 return v.c;
5184 }
5185
5186 #define SHORT_CACHE_FIELDS_DO(macro) \
5187 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5188
5189 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5190 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5191 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5192 }
5193
5194 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5195 oop base = ik->static_field_base_raw();
5196 return objArrayOop(base->obj_field(_static_cache_offset));
5197 }
5198
5199 Symbol* java_lang_Short_ShortCache::symbol() {
5200 return vmSymbols::java_lang_Short_ShortCache();
5201 }
5202
5203 #if INCLUDE_CDS
5204 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5205 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5206 }
5207 #endif
5208 #undef SHORT_CACHE_FIELDS_DO
5209
5210 jshort java_lang_Short::value(oop obj) {
5211 jvalue v;
5212 java_lang_boxing_object::get_value(obj, &v);
5213 return v.s;
5214 }
5215
5216 #define BYTE_CACHE_FIELDS_DO(macro) \
5217 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5218
5219 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5220 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5221 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5222 }
5223
5224 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5225 oop base = ik->static_field_base_raw();
5226 return objArrayOop(base->obj_field(_static_cache_offset));
5227 }
5228
5229 Symbol* java_lang_Byte_ByteCache::symbol() {
5230 return vmSymbols::java_lang_Byte_ByteCache();
5231 }
5232
5233 #if INCLUDE_CDS
5234 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5235 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5236 }
5237 #endif
5238 #undef BYTE_CACHE_FIELDS_DO
5239
5240 jbyte java_lang_Byte::value(oop obj) {
5241 jvalue v;
5242 java_lang_boxing_object::get_value(obj, &v);
5243 return v.b;
5244 }
5245
5246 int java_lang_Boolean::_static_TRUE_offset;
5247 int java_lang_Boolean::_static_FALSE_offset;
5248
5249 #define BOOLEAN_FIELDS_DO(macro) \
5250 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5251 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5252
5253
5254 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5255 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5256 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5257 }
5258
5259 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5260 oop base = ik->static_field_base_raw();
5261 return base->obj_field(_static_TRUE_offset);
5262 }
5263
5264 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5265 oop base = ik->static_field_base_raw();
5266 return base->obj_field(_static_FALSE_offset);
5267 }
5268
5269 Symbol* java_lang_Boolean::symbol() {
5270 return vmSymbols::java_lang_Boolean();
5271 }
5272
5273 #if INCLUDE_CDS
5274 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5275 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5276 }
5277 #endif
5278 #undef BOOLEAN_CACHE_FIELDS_DO
5279
5280 jboolean java_lang_Boolean::value(oop obj) {
5281 jvalue v;
5282 java_lang_boxing_object::get_value(obj, &v);
5283 return v.z;
5284 }
5285
5286 // java_lang_reflect_RecordComponent
5287
5288 int java_lang_reflect_RecordComponent::_clazz_offset;
5289 int java_lang_reflect_RecordComponent::_name_offset;
5290 int java_lang_reflect_RecordComponent::_type_offset;
5291 int java_lang_reflect_RecordComponent::_accessor_offset;
5292 int java_lang_reflect_RecordComponent::_signature_offset;
5293 int java_lang_reflect_RecordComponent::_annotations_offset;
5294 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5295
5296 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5297 macro(_clazz_offset, k, "clazz", class_signature, false); \
5298 macro(_name_offset, k, "name", string_signature, false); \
5299 macro(_type_offset, k, "type", class_signature, false); \
5300 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5301 macro(_signature_offset, k, "signature", string_signature, false); \
5302 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5303 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5304
5305 // Support for java_lang_reflect_RecordComponent
5306 void java_lang_reflect_RecordComponent::compute_offsets() {
5307 InstanceKlass* k = vmClasses::RecordComponent_klass();
5308 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5309 }
5310
5311 #if INCLUDE_CDS
5312 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5313 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5314 }
5315 #endif
5316
5317 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5318 element->obj_field_put(_clazz_offset, value);
5319 }
5320
5321 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5322 element->obj_field_put(_name_offset, value);
5323 }
5324
5325 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5326 element->obj_field_put(_type_offset, value);
5327 }
5328
5329 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5330 element->obj_field_put(_accessor_offset, value);
5331 }
5332
5333 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5334 element->obj_field_put(_signature_offset, value);
5335 }
5336
5337 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5338 element->obj_field_put(_annotations_offset, value);
5339 }
5340
5341 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5342 element->obj_field_put(_typeAnnotations_offset, value);
5343 }
5344
5345 // java_lang_InternalError
5346 int java_lang_InternalError::_during_unsafe_access_offset;
5347
5348 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5349 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5350 }
5351
5352 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5353 return internal_error->bool_field(_during_unsafe_access_offset);
5354 }
5355
5356 void java_lang_InternalError::compute_offsets() {
5357 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5358 }
5359
5360 #if INCLUDE_CDS
5361 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5362 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5363 }
5364 #endif
5365
5366 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5367 f(java_lang_Class) \
5368 f(java_lang_String) \
5369 f(java_lang_ref_Reference) \
5370 //end
5371
5372 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5373 f(java_lang_System) \
5374 f(java_lang_ClassLoader) \
5375 f(java_lang_Throwable) \
5376 f(java_lang_Thread) \
5377 f(java_lang_Thread_FieldHolder) \
5378 f(java_lang_Thread_Constants) \
5379 f(java_lang_ThreadGroup) \
5380 f(java_lang_VirtualThread) \
5381 f(java_lang_InternalError) \
5382 f(java_lang_AssertionStatusDirectives) \
5383 f(java_lang_ref_SoftReference) \
5384 f(java_lang_invoke_MethodHandle) \
5385 f(java_lang_invoke_DirectMethodHandle) \
5386 f(java_lang_invoke_MemberName) \
5387 f(java_lang_invoke_ResolvedMethodName) \
5388 f(java_lang_invoke_LambdaForm) \
5389 f(java_lang_invoke_MethodType) \
5390 f(java_lang_invoke_CallSite) \
5391 f(java_lang_invoke_ConstantCallSite) \
5392 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5393 f(java_lang_reflect_AccessibleObject) \
5394 f(java_lang_reflect_Method) \
5395 f(java_lang_reflect_Constructor) \
5396 f(java_lang_reflect_Field) \
5397 f(java_lang_reflect_RecordComponent) \
5398 f(reflect_ConstantPool) \
5399 f(java_lang_reflect_Parameter) \
5400 f(java_lang_Module) \
5401 f(java_lang_StackTraceElement) \
5402 f(java_lang_ClassFrameInfo) \
5403 f(java_lang_StackFrameInfo) \
5404 f(java_lang_LiveStackFrameInfo) \
5405 f(jdk_internal_vm_ContinuationScope) \
5406 f(jdk_internal_vm_Continuation) \
5407 f(jdk_internal_vm_StackChunk) \
5408 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5409 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5410 f(jdk_internal_foreign_abi_ABIDescriptor) \
5411 f(jdk_internal_foreign_abi_VMStorage) \
5412 f(jdk_internal_foreign_abi_CallConv) \
5413 f(jdk_internal_misc_UnsafeConstants) \
5414 f(java_lang_boxing_object) \
5415 f(vector_VectorPayload) \
5416 //end
5417
5418 #define BASIC_JAVA_CLASSES_DO(f) \
5419 BASIC_JAVA_CLASSES_DO_PART1(f) \
5420 BASIC_JAVA_CLASSES_DO_PART2(f)
5421
5422 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5423
5424 // Compute field offsets of all the classes in this file
5425 void JavaClasses::compute_offsets() {
5426 if (CDSConfig::is_using_archive()) {
5427 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5428 JvmtiExport::has_early_class_hook_env()),
5429 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5430 // None of the classes used by the rest of this function can be replaced by
5431 // JVMTI ClassFileLoadHook.
5432 // We are safe to use the archived offsets, which have already been restored
5433 // by JavaClasses::serialize_offsets, without computing the offsets again.
5434 return;
5435 }
5436
5437 // We have already called the compute_offsets() of the
5438 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5439 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5440 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5441 }
5442
5443 #if INCLUDE_CDS
5444 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5445
5446 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5447 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5448 }
5449 #endif
5450
5451 #if INCLUDE_CDS_JAVA_HEAP
5452 bool JavaClasses::is_supported_for_archiving(oop obj) {
5453 Klass* klass = obj->klass();
5454
5455 if (!CDSConfig::is_dumping_invokedynamic()) {
5456 // These are supported by CDS only when CDSConfig::is_dumping_invokedynamic() is enabled.
5457 if (klass == vmClasses::ResolvedMethodName_klass() ||
5458 klass == vmClasses::MemberName_klass() ||
5459 klass == vmClasses::Context_klass()) {
5460 return false;
5461 }
5462 }
5463
5464 if (klass->is_subclass_of(vmClasses::Reference_klass())) {
5465 // It's problematic to archive Reference objects. One of the reasons is that
5466 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5467 return false;
5468 }
5469
5470 return true;
5471 }
5472 #endif
5473
5474 #ifndef PRODUCT
5475
5476 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5477
5478 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5479 const char* field_sig) {
5480 EXCEPTION_MARK;
5481 fieldDescriptor fd;
5482 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5483 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5484 InstanceKlass* ik = InstanceKlass::cast(k);
5485 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5486 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5487 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5488 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5489 return false;
5490 }
5491 if (fd.is_static()) {
5492 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5493 return false;
5494 }
5495 if (fd.offset() == deserialized_offset ) {
5496 return true;
5497 } else {
5498 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5499 klass_name, field_name, deserialized_offset, fd.offset());
5500 return false;
5501 }
5502 }
5503
5504 void JavaClasses::check_offsets() {
5505 bool valid = true;
5506
5507 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5508 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5509
5510 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5511 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5512
5513 // Boxed primitive objects (java_lang_boxing_object)
5514
5515 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5516 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5517 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5518 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5519 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5520 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5521 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5522 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5523
5524 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5525 }
5526
5527 #endif // PRODUCT
5528
5529 int InjectedField::compute_offset() {
5530 InstanceKlass* ik = InstanceKlass::cast(klass());
5531 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5532 if (!may_be_java && !fs.field_flags().is_injected()) {
5533 // Only look at injected fields
5534 continue;
5535 }
5536 if (fs.name() == name() && fs.signature() == signature()) {
5537 return fs.offset();
5538 }
5539 }
5540 ResourceMark rm;
5541 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)" : "");
5542 #ifndef PRODUCT
5543 ik->print();
5544 tty->print_cr("all fields:");
5545 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5546 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5547 }
5548 #endif //PRODUCT
5549 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5550 return -1;
5551 }
5552
5553 void javaClasses_init() {
5554 JavaClasses::compute_offsets();
5555 JavaClasses::check_offsets();
5556 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5557 }