1 /*
2 * Copyright (c) 1997, 2026, 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 "cds/aotMetaspace.hpp"
26 #include "cds/aotReferenceObjSupport.hpp"
27 #include "cds/archiveBuilder.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.inline.hpp"
30 #include "classfile/altHashing.hpp"
31 #include "classfile/classLoaderData.inline.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/javaClassesImpl.hpp"
34 #include "classfile/javaThreadStatus.hpp"
35 #include "classfile/moduleEntry.hpp"
36 #include "classfile/stringTable.hpp"
37 #include "classfile/symbolTable.hpp"
38 #include "classfile/systemDictionary.hpp"
39 #include "classfile/vmClasses.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/debugInfo.hpp"
42 #include "code/dependencyContext.hpp"
43 #include "code/pcDesc.hpp"
44 #include "gc/shared/collectedHeap.inline.hpp"
45 #include "interpreter/interpreter.hpp"
46 #include "interpreter/linkResolver.hpp"
47 #include "jvm.h"
48 #include "logging/log.hpp"
49 #include "logging/logStream.hpp"
50 #include "memory/oopFactory.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "oops/fieldInfo.hpp"
54 #include "oops/fieldStreams.inline.hpp"
55 #include "oops/flatArrayKlass.hpp"
56 #include "oops/inlineKlass.inline.hpp"
57 #include "oops/instanceKlass.inline.hpp"
58 #include "oops/instanceMirrorKlass.inline.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/oop.inline.hpp"
64 #include "oops/oopCast.inline.hpp"
65 #include "oops/recordComponent.hpp"
66 #include "oops/refArrayOop.inline.hpp"
67 #include "oops/symbol.hpp"
68 #include "oops/typeArrayOop.inline.hpp"
69 #include "prims/jvmtiExport.hpp"
70 #include "prims/methodHandles.hpp"
71 #include "prims/resolvedMethodTable.hpp"
72 #include "runtime/continuationEntry.inline.hpp"
73 #include "runtime/continuationJavaClasses.inline.hpp"
74 #include "runtime/fieldDescriptor.inline.hpp"
75 #include "runtime/frame.inline.hpp"
76 #include "runtime/handles.inline.hpp"
77 #include "runtime/handshake.hpp"
78 #include "runtime/init.hpp"
79 #include "runtime/interfaceSupport.inline.hpp"
80 #include "runtime/java.hpp"
81 #include "runtime/javaCalls.hpp"
82 #include "runtime/javaThread.hpp"
83 #include "runtime/jniHandles.inline.hpp"
84 #include "runtime/reflection.hpp"
85 #include "runtime/safepoint.hpp"
86 #include "runtime/safepointVerifiers.hpp"
87 #include "runtime/threadSMR.hpp"
88 #include "runtime/vframe.inline.hpp"
89 #include "runtime/vm_version.hpp"
90 #include "utilities/align.hpp"
91 #include "utilities/globalDefinitions.hpp"
92 #include "utilities/growableArray.hpp"
93 #include "utilities/preserveException.hpp"
94 #include "utilities/utf8.hpp"
95 #if INCLUDE_JVMCI
96 #include "jvmci/jvmciJavaClasses.hpp"
97 #endif
98
99 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
100 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
101
102 InjectedField JavaClasses::_injected_fields[] = {
103 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
104 };
105
106 // Register native methods of Object
107 void java_lang_Object::register_natives(TRAPS) {
108 InstanceKlass* obj = vmClasses::Object_klass();
109 Method::register_native(obj, vmSymbols::hashCode_name(),
110 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
111 Method::register_native(obj, vmSymbols::wait_name(),
112 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
113 Method::register_native(obj, vmSymbols::notify_name(),
114 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
115 Method::register_native(obj, vmSymbols::notifyAll_name(),
116 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
117 Method::register_native(obj, vmSymbols::clone_name(),
118 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
119 }
120
121 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
122 return _injected_fields[(int)id].compute_offset();
123 }
124
125 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
126 *field_count = 0;
127
128 vmSymbolID sid = vmSymbols::find_sid(class_name);
129 if (sid == vmSymbolID::NO_SID) {
130 // Only well known classes can inject fields
131 return nullptr;
132 }
133
134 int count = 0;
135 int start = -1;
136
137 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
138 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
139 count++; \
140 if (start == -1) { \
141 start = (int)InjectedFieldID::klass##_##name##_enum; \
142 } \
143 }
144 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
145 #undef LOOKUP_INJECTED_FIELD
146
147 if (start != -1) {
148 *field_count = count;
149 return _injected_fields + start;
150 }
151 return nullptr;
152 }
153
154
155 // Helpful routine for computing field offsets at run time rather than hardcoding them
156 // Finds local fields only, including static fields. Static field offsets are from the
157 // beginning of the mirror.
158 void JavaClasses::compute_offset(int &dest_offset,
159 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
160 bool is_static) {
161 fieldDescriptor fd;
162 if (ik == nullptr) {
163 ResourceMark rm;
164 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
165 vm_exit_during_initialization("Invalid layout of well-known class");
166 }
167
168 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
169 ResourceMark rm;
170 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
171 name_symbol->as_C_string(), signature_symbol->as_C_string());
172 #ifndef PRODUCT
173 // Prints all fields and offsets
174 Log(class) lt;
175 LogStream ls(lt.error());
176 ik->print_on(&ls);
177 #endif //PRODUCT
178 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
179 }
180 dest_offset = fd.offset();
181 }
182
183 // Overloading to pass name as a string.
184 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
185 const char* name_string, Symbol* signature_symbol,
186 bool is_static) {
187 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
188 if (name == nullptr) {
189 ResourceMark rm;
190 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
191 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
192 }
193 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
194 }
195
196 // java_lang_String
197
198 int java_lang_String::_value_offset;
199 int java_lang_String::_hash_offset;
200 int java_lang_String::_hashIsZero_offset;
201 int java_lang_String::_coder_offset;
202 int java_lang_String::_flags_offset;
203
204 bool java_lang_String::_initialized;
205
206
207 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
208 uint8_t* addr = flags_addr(java_string);
209 uint8_t value = AtomicAccess::load(addr);
210 while ((value & flag_mask) == 0) {
211 uint8_t old_value = value;
212 value |= flag_mask;
213 value = AtomicAccess::cmpxchg(addr, old_value, value);
214 if (value == old_value) return false; // Flag bit changed from 0 to 1.
215 }
216 return true; // Flag bit is already 1.
217 }
218
219 #define STRING_FIELDS_DO(macro) \
220 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
221 macro(_hash_offset, k, "hash", int_signature, false); \
222 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
223 macro(_coder_offset, k, "coder", byte_signature, false);
224
225 void java_lang_String::compute_offsets() {
226 if (_initialized) {
227 return;
228 }
229
230 InstanceKlass* k = vmClasses::String_klass();
231 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
232 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
233
234 _initialized = true;
235 }
236
237 #if INCLUDE_CDS
238 void java_lang_String::serialize_offsets(SerializeClosure* f) {
239 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
240 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
241 f->do_bool(&_initialized);
242 }
243 #endif
244
245 class CompactStringsFixup : public FieldClosure {
246 private:
247 bool _value;
248
249 public:
250 CompactStringsFixup(bool value) : _value(value) {}
251
252 void do_field(fieldDescriptor* fd) {
253 if (fd->name() == vmSymbols::compact_strings_name()) {
254 oop mirror = fd->field_holder()->java_mirror();
255 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
256 assert(mirror != nullptr, "String must have mirror already");
257 mirror->bool_field_put(fd->offset(), _value);
258 }
259 }
260 };
261
262 void java_lang_String::set_compact_strings(bool value) {
263 CompactStringsFixup fix(value);
264 vmClasses::String_klass()->do_local_static_fields(&fix);
265 }
266
267 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
268 assert(_initialized, "Must be initialized");
269 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
270
271 // Create the String object first, so there's a chance that the String
272 // and the char array it points to end up in the same cache line.
273 oop obj;
274 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
275
276 // Create the char array. The String object must be handlized here
277 // because GC can happen as a result of the allocation attempt.
278 Handle h_obj(THREAD, obj);
279 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
280 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
281
282 // Point the String at the char array
283 obj = h_obj();
284 set_value(obj, buffer);
285 // No need to zero the offset, allocation zero'ed the entire String object
286 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
287 return h_obj;
288 }
289
290 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
291 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
292 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
293 typeArrayOop buffer = value(h_obj());
294 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
295 if (is_latin1) {
296 for (int index = 0; index < length; index++) {
297 buffer->byte_at_put(index, (jbyte)unicode[index]);
298 }
299 } else {
300 for (int index = 0; index < length; index++) {
301 buffer->char_at_put(index, unicode[index]);
302 }
303 }
304
305 #ifdef ASSERT
306 {
307 ResourceMark rm;
308 size_t utf8_len = static_cast<size_t>(length);
309 char* expected = UNICODE::as_utf8(unicode, utf8_len);
310 char* actual = as_utf8_string(h_obj());
311 if (strcmp(expected, actual) != 0) {
312 fatal("Unicode conversion failure: %s --> %s", expected, actual);
313 }
314 }
315 #endif
316
317 return h_obj;
318 }
319
320 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
321 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
322 return h_obj();
323 }
324
325 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
326 if (utf8_str == nullptr) {
327 return Handle();
328 }
329 bool has_multibyte, is_latin1;
330 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
331 if (!CompactStrings) {
332 has_multibyte = true;
333 is_latin1 = false;
334 }
335
336 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
337 if (length > 0) {
338 if (!has_multibyte) {
339 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
340 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
341 } else if (is_latin1) {
342 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
343 } else {
344 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
345 }
346 }
347
348 #ifdef ASSERT
349 // This check is too strict when the input string is not a valid UTF8.
350 // For example, it may be created with arbitrary content via jni_NewStringUTF.
351 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, strlen(utf8_str), /*version_leq_47*/false)) {
352 ResourceMark rm;
353 const char* expected = utf8_str;
354 char* actual = as_utf8_string(h_obj());
355 if (strcmp(expected, actual) != 0) {
356 fatal("String conversion failure: %s --> %s", expected, actual);
357 }
358 }
359 #endif
360
361 return h_obj;
362 }
363
364 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
365 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
366 return h_obj();
367 }
368
369 Handle java_lang_String::create_from_symbol(const Symbol* symbol, TRAPS) {
370 const char* utf8_str = (char*)symbol->bytes();
371 int utf8_len = symbol->utf8_length();
372
373 bool has_multibyte, is_latin1;
374 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
375 if (!CompactStrings) {
376 has_multibyte = true;
377 is_latin1 = false;
378 }
379
380 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
381 if (length > 0) {
382 if (!has_multibyte) {
383 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
384 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
385 } else if (is_latin1) {
386 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
387 } else {
388 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
389 }
390 }
391
392 #ifdef ASSERT
393 // This check is too strict on older classfile versions
394 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, utf8_len, /*version_leq_47*/false))
395 {
396 ResourceMark rm;
397 const char* expected = symbol->as_utf8();
398 char* actual = as_utf8_string(h_obj());
399 if (strncmp(expected, actual, utf8_len) != 0) {
400 fatal("Symbol conversion failure: %s --> %s", expected, actual);
401 }
402 }
403 #endif
404
405 return h_obj;
406 }
407
408 // Converts a C string to a Java String based on current encoding
409 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
410 assert(str != nullptr, "bad arguments");
411
412 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
413 static to_java_string_fn_t _to_java_string_fn = nullptr;
414
415 if (_to_java_string_fn == nullptr) {
416 void *lib_handle = os::native_java_library();
417 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
418 if (_to_java_string_fn == nullptr) {
419 fatal("JNU_NewStringPlatform missing");
420 }
421 }
422
423 jstring js = nullptr;
424 {
425 JavaThread* thread = THREAD;
426 HandleMark hm(thread);
427 ThreadToNativeFromVM ttn(thread);
428 js = (_to_java_string_fn)(thread->jni_environment(), str);
429 }
430
431 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
432 JNIHandles::destroy_local(js); // destroy local JNIHandle.
433 return native_platform_string;
434 }
435
436 // Converts a Java String to a native C string that can be used for
437 // native OS calls.
438 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
439 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
440 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
441
442 if (_to_platform_string_fn == nullptr) {
443 void *lib_handle = os::native_java_library();
444 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
445 if (_to_platform_string_fn == nullptr) {
446 fatal("GetStringPlatformChars missing");
447 }
448 }
449
450 char *native_platform_string;
451 jstring js;
452 { JavaThread* thread = THREAD;
453 js = (jstring) JNIHandles::make_local(thread, java_string());
454 HandleMark hm(thread);
455 ThreadToNativeFromVM ttn(thread);
456 JNIEnv *env = thread->jni_environment();
457 bool is_copy;
458 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
459 assert(is_copy == JNI_TRUE, "is_copy value changed");
460 }
461
462 // Uses a store barrier and therefore needs to be in vm state
463 JNIHandles::destroy_local(js);
464
465 return native_platform_string;
466 }
467
468 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
469 ResourceMark rm(THREAD);
470 return create_from_str(java_name->as_klass_external_name(), THREAD);
471 }
472
473 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
474 jchar* result = as_unicode_string_or_null(java_string, length);
475 if (result == nullptr) {
476 THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
477 }
478 return result;
479 }
480
481 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
482 typeArrayOop value = java_lang_String::value(java_string);
483 length = java_lang_String::length(java_string, value);
484 bool is_latin1 = java_lang_String::is_latin1(java_string);
485
486 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
487 if (result != nullptr) {
488 if (!is_latin1) {
489 for (int index = 0; index < length; index++) {
490 result[index] = value->char_at(index);
491 }
492 } else {
493 for (int index = 0; index < length; index++) {
494 result[index] = ((jchar) value->byte_at(index)) & 0xff;
495 }
496 }
497 }
498 return result;
499 }
500
501 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
502 // The hash and hashIsZero fields are subject to a benign data race,
503 // making it crucial to ensure that any observable result of the
504 // calculation in this method stays correct under any possible read of
505 // these fields. Necessary restrictions to allow this to be correct
506 // without explicit memory fences or similar concurrency primitives is
507 // that we can ever only write to one of these two fields for a given
508 // String instance, and that the computation is idempotent and derived
509 // from immutable state
510 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
511 if (java_lang_String::hash_is_set(java_string)) {
512 return java_string->int_field(_hash_offset);
513 }
514
515 typeArrayOop value = java_lang_String::value(java_string);
516 int length = java_lang_String::length(java_string, value);
517 bool is_latin1 = java_lang_String::is_latin1(java_string);
518
519 unsigned int hash = 0;
520 if (length > 0) {
521 if (is_latin1) {
522 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
523 } else {
524 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
525 }
526 }
527
528 if (update) {
529 if (hash != 0) {
530 java_string->int_field_put(_hash_offset, hash);
531 } else {
532 java_string->bool_field_put(_hashIsZero_offset, true);
533 }
534 }
535 return hash;
536 }
537
538 unsigned int java_lang_String::hash_code(oop java_string) {
539 return hash_code_impl(java_string, /*update=*/true);
540 }
541
542 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
543 return hash_code_impl(java_string, /*update=*/false);
544 }
545
546
547 char* java_lang_String::as_quoted_ascii(oop java_string) {
548 typeArrayOop value = java_lang_String::value(java_string);
549 int length = java_lang_String::length(java_string, value);
550 bool is_latin1 = java_lang_String::is_latin1(java_string);
551
552 if (length == 0) return nullptr;
553
554 char* result;
555 size_t result_length;
556 if (!is_latin1) {
557 jchar* base = value->char_at_addr(0);
558 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
559 result = NEW_RESOURCE_ARRAY(char, result_length);
560 UNICODE::as_quoted_ascii(base, length, result, result_length);
561 } else {
562 jbyte* base = value->byte_at_addr(0);
563 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
564 result = NEW_RESOURCE_ARRAY(char, result_length);
565 UNICODE::as_quoted_ascii(base, length, result, result_length);
566 }
567 assert(result_length >= (size_t)length + 1, "must not be shorter");
568 assert(result_length == strlen(result) + 1, "must match");
569 return result;
570 }
571
572 Symbol* java_lang_String::as_symbol(oop java_string) {
573 typeArrayOop value = java_lang_String::value(java_string);
574 int length = java_lang_String::length(java_string, value);
575 bool is_latin1 = java_lang_String::is_latin1(java_string);
576 if (!is_latin1) {
577 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
578 Symbol* sym = SymbolTable::new_symbol(base, length);
579 return sym;
580 } else {
581 ResourceMark rm;
582 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
583 size_t utf8_len = static_cast<size_t>(length);
584 const char* base = UNICODE::as_utf8(position, utf8_len);
585 Symbol* sym = SymbolTable::new_symbol(base, checked_cast<int>(utf8_len));
586 return sym;
587 }
588 }
589
590 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
591 typeArrayOop value = java_lang_String::value(java_string);
592 int length = java_lang_String::length(java_string, value);
593 bool is_latin1 = java_lang_String::is_latin1(java_string);
594 if (!is_latin1) {
595 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
596 return SymbolTable::probe_unicode(base, length);
597 } else {
598 ResourceMark rm;
599 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
600 size_t utf8_len = static_cast<size_t>(length);
601 const char* base = UNICODE::as_utf8(position, utf8_len);
602 return SymbolTable::probe(base, checked_cast<int>(utf8_len));
603 }
604 }
605
606 size_t java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
607 assert(value_equals(value, java_lang_String::value(java_string)),
608 "value must be same as java_lang_String::value(java_string)");
609 int length = java_lang_String::length(java_string, value);
610 if (length == 0) {
611 return 0;
612 }
613 if (!java_lang_String::is_latin1(java_string)) {
614 return UNICODE::utf8_length(value->char_at_addr(0), length);
615 } else {
616 return UNICODE::utf8_length(value->byte_at_addr(0), length);
617 }
618 }
619
620 size_t java_lang_String::utf8_length(oop java_string) {
621 typeArrayOop value = java_lang_String::value(java_string);
622 return utf8_length(java_string, value);
623 }
624
625 int java_lang_String::utf8_length_as_int(oop java_string) {
626 typeArrayOop value = java_lang_String::value(java_string);
627 return utf8_length_as_int(java_string, value);
628 }
629
630 int java_lang_String::utf8_length_as_int(oop java_string, typeArrayOop value) {
631 assert(value_equals(value, java_lang_String::value(java_string)),
632 "value must be same as java_lang_String::value(java_string)");
633 int length = java_lang_String::length(java_string, value);
634 if (length == 0) {
635 return 0;
636 }
637 if (!java_lang_String::is_latin1(java_string)) {
638 return UNICODE::utf8_length_as_int(value->char_at_addr(0), length);
639 } else {
640 return UNICODE::utf8_length_as_int(value->byte_at_addr(0), length);
641 }
642 }
643
644 char* java_lang_String::as_utf8_string(oop java_string) {
645 size_t length;
646 return as_utf8_string(java_string, length);
647 }
648
649 char* java_lang_String::as_utf8_string(oop java_string, size_t& length) {
650 typeArrayOop value = java_lang_String::value(java_string);
651 // `length` is used as the incoming number of characters to
652 // convert, and then set as the number of bytes in the UTF8 sequence.
653 length = java_lang_String::length(java_string, value);
654 bool is_latin1 = java_lang_String::is_latin1(java_string);
655 if (!is_latin1) {
656 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
657 return UNICODE::as_utf8(position, length);
658 } else {
659 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
660 return UNICODE::as_utf8(position, length);
661 }
662 }
663
664 // Uses a provided buffer if it's sufficiently large, otherwise allocates
665 // a resource array to fit
666 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, size_t buflen, size_t& utf8_len) {
667 typeArrayOop value = java_lang_String::value(java_string);
668 int len = java_lang_String::length(java_string, value);
669 bool is_latin1 = java_lang_String::is_latin1(java_string);
670 if (!is_latin1) {
671 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
672 utf8_len = UNICODE::utf8_length(position, len);
673 if (utf8_len >= buflen) {
674 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
675 }
676 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
677 } else {
678 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
679 utf8_len = UNICODE::utf8_length(position, len);
680 if (utf8_len >= buflen) {
681 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
682 }
683 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
684 }
685 }
686
687 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, size_t buflen) {
688 assert(value_equals(value, java_lang_String::value(java_string)),
689 "value must be same as java_lang_String::value(java_string)");
690 int length = java_lang_String::length(java_string, value);
691 bool is_latin1 = java_lang_String::is_latin1(java_string);
692 if (!is_latin1) {
693 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
694 return UNICODE::as_utf8(position, length, buf, buflen);
695 } else {
696 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
697 return UNICODE::as_utf8(position, length, buf, buflen);
698 }
699 }
700
701 char* java_lang_String::as_utf8_string(oop java_string, char* buf, size_t buflen) {
702 typeArrayOop value = java_lang_String::value(java_string);
703 return as_utf8_string(java_string, value, buf, buflen);
704 }
705
706 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
707 // `length` is used as the incoming number of characters to
708 // convert, and then set as the number of bytes in the UTF8 sequence.
709 size_t length = static_cast<size_t>(len);
710 typeArrayOop value = java_lang_String::value(java_string);
711 bool is_latin1 = java_lang_String::is_latin1(java_string);
712 assert(start + len <= java_lang_String::length(java_string), "just checking");
713 if (!is_latin1) {
714 jchar* position = value->char_at_addr(start);
715 return UNICODE::as_utf8(position, length);
716 } else {
717 jbyte* position = value->byte_at_addr(start);
718 return UNICODE::as_utf8(position, length);
719 }
720 }
721
722 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, size_t buflen) {
723 assert(value_equals(value, java_lang_String::value(java_string)),
724 "value must be same as java_lang_String::value(java_string)");
725 assert(start + len <= java_lang_String::length(java_string), "just checking");
726 bool is_latin1 = java_lang_String::is_latin1(java_string);
727 if (!is_latin1) {
728 jchar* position = value->char_at_addr(start);
729 return UNICODE::as_utf8(position, len, buf, buflen);
730 } else {
731 jbyte* position = value->byte_at_addr(start);
732 return UNICODE::as_utf8(position, len, buf, buflen);
733 }
734 }
735
736 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
737 assert(java_string->klass() == vmClasses::String_klass(),
738 "must be java_string");
739 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
740 int length = java_lang_String::length(java_string, value);
741 if (length != len) {
742 return false;
743 }
744 bool is_latin1 = java_lang_String::is_latin1(java_string);
745 if (!is_latin1) {
746 for (int i = 0; i < len; i++) {
747 if (value->char_at(i) != chars[i]) {
748 return false;
749 }
750 }
751 } else {
752 for (int i = 0; i < len; i++) {
753 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
754 return false;
755 }
756 }
757 }
758 return true;
759 }
760
761 bool java_lang_String::equals(oop java_string, const char* utf8_string, size_t utf8_len) {
762 assert(java_string->klass() == vmClasses::String_klass(),
763 "must be java_string");
764 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
765 int length = java_lang_String::length(java_string, value);
766 int unicode_length = UTF8::unicode_length(utf8_string, utf8_len);
767 if (length != unicode_length) {
768 return false;
769 }
770 bool is_latin1 = java_lang_String::is_latin1(java_string);
771 jchar c;
772 if (!is_latin1) {
773 for (int i = 0; i < unicode_length; i++) {
774 utf8_string = UTF8::next(utf8_string, &c);
775 if (value->char_at(i) != c) {
776 return false;
777 }
778 }
779 } else {
780 for (int i = 0; i < unicode_length; i++) {
781 utf8_string = UTF8::next(utf8_string, &c);
782 if ((((jchar) value->byte_at(i)) & 0xff) != c) {
783 return false;
784 }
785 }
786 }
787 return true;
788 }
789
790 bool java_lang_String::equals(oop str1, oop str2) {
791 assert(str1->klass() == vmClasses::String_klass(),
792 "must be java String");
793 assert(str2->klass() == vmClasses::String_klass(),
794 "must be java String");
795 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
796 bool is_latin1 = java_lang_String::is_latin1(str1);
797 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
798 bool is_latin2 = java_lang_String::is_latin1(str2);
799
800 if (is_latin1 != is_latin2) {
801 // Strings with different coders are never equal.
802 return false;
803 }
804 return value_equals(value1, value2);
805 }
806
807 // Print the given string to the given outputStream, limiting the output to
808 // at most max_length of the string's characters. If the length exceeds the
809 // limit we print an abridged version of the string with the "middle" elided
810 // and replaced by " ... (N characters ommitted) ... ". If max_length is odd
811 // it is treated as max_length-1.
812 void java_lang_String::print(oop java_string, outputStream* st, int max_length) {
813 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
814 // We need at least two characters to print A ... B
815 assert(max_length > 1, "invalid max_length: %d", max_length);
816
817 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
818
819 if (value == nullptr) {
820 // This can happen if, e.g., printing a String
821 // object before its initializer has been called
822 st->print("nullptr");
823 return;
824 }
825
826 int length = java_lang_String::length(java_string, value);
827 bool is_latin1 = java_lang_String::is_latin1(java_string);
828
829 bool abridge = length > max_length;
830
831 st->print("\"");
832 for (int index = 0; index < length; index++) {
833 // If we need to abridge and we've printed half the allowed characters
834 // then jump to the tail of the string.
835 if (abridge && index >= max_length / 2) {
836 st->print(" ... (%d characters ommitted) ... ", length - 2 * (max_length / 2));
837 index = length - (max_length / 2);
838 abridge = false; // only do this once
839 }
840 jchar c = (!is_latin1) ? value->char_at(index) :
841 ((jchar) value->byte_at(index)) & 0xff;
842 if (c < ' ') {
843 st->print("\\x%02X", c); // print control characters e.g. \x0A
844 } else {
845 st->print("%c", c);
846 }
847 }
848 st->print("\"");
849
850 if (length > max_length) {
851 st->print(" (abridged) ");
852 }
853 }
854
855 // java_lang_Class
856
857 int java_lang_Class::_klass_offset;
858 int java_lang_Class::_array_klass_offset;
859 int java_lang_Class::_oop_size_offset;
860 int java_lang_Class::_static_oop_field_count_offset;
861 int java_lang_Class::_class_loader_offset;
862 int java_lang_Class::_module_offset;
863 int java_lang_Class::_protection_domain_offset;
864 int java_lang_Class::_component_mirror_offset;
865 int java_lang_Class::_init_lock_offset;
866 int java_lang_Class::_signers_offset;
867 int java_lang_Class::_name_offset;
868 int java_lang_Class::_source_file_offset;
869 int java_lang_Class::_classData_offset;
870 int java_lang_Class::_classRedefinedCount_offset;
871 int java_lang_Class::_reflectionData_offset;
872 int java_lang_Class::_modifiers_offset;
873 int java_lang_Class::_is_primitive_offset;
874 int java_lang_Class::_is_identity_offset;
875 int java_lang_Class::_raw_access_flags_offset;
876
877 bool java_lang_Class::_offsets_computed = false;
878 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
879 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
880
881 #ifdef ASSERT
882 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
883 assert(fd->has_initial_value(), "caller should have checked this");
884 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
885 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
886 }
887 #endif
888
889 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
890 DEBUG_ONLY(assert_valid_static_string_field(fd);)
891 oop string = fd->string_initial_value(CHECK);
892 mirror()->obj_field_put(fd->offset(), string);
893 }
894
895 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
896 assert(fd->has_initial_value(), "caller should have checked this");
897 BasicType t = fd->field_type();
898 switch (t) {
899 case T_BYTE:
900 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
901 break;
902 case T_BOOLEAN:
903 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
904 break;
905 case T_CHAR:
906 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
907 break;
908 case T_SHORT:
909 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
910 break;
911 case T_INT:
912 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
913 break;
914 case T_FLOAT:
915 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
916 break;
917 case T_DOUBLE:
918 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
919 break;
920 case T_LONG:
921 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
922 break;
923 default:
924 // Illegal ConstantValue attribute in class file should have been
925 // caught during classfile parsing.
926 ShouldNotReachHere();
927 }
928 }
929
930 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
931 assert(mirror.not_null() && fd->is_static(), "just checking");
932 if (fd->has_initial_value()) {
933 if (fd->field_type() != T_OBJECT) {
934 initialize_static_primitive_field(fd, mirror);
935 } else {
936 initialize_static_string_field(fd, mirror, CHECK);
937 }
938 }
939 }
940
941 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
942 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
943
944 // If the offset was read from the shared archive, it was fixed up already
945 if (!k->in_aot_cache()) {
946 if (k->is_instance_klass()) {
947 // During bootstrap, java.lang.Class wasn't loaded so static field
948 // offsets were computed without the size added it. Go back and
949 // update all the static field offsets to included the size.
950
951 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
952 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
953 // static fields offsets are updated in this array before reencoding everything into
954 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
955
956 int java_fields;
957 int injected_fields;
958 InstanceKlass* ik = InstanceKlass::cast(k);
959 GrowableArray<FieldInfo>* fields =
960 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
961 &java_fields, &injected_fields);
962 for (int i = 0; i < fields->length(); i++) {
963 FieldInfo* fi = fields->adr_at(i);
964 if (fi->access_flags().is_static()) {
965 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
966 }
967 }
968 Array<u1>* old_stream = ik->fieldinfo_stream();
969 assert(fields->length() == (java_fields + injected_fields), "Must be");
970 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
971 ik->set_fieldinfo_stream(new_fis);
972 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
973
974 Array<u1>* old_table = ik->fieldinfo_search_table();
975 Array<u1>* search_table = FieldInfoStream::create_search_table(ik->constants(), new_fis, k->class_loader_data(), CHECK);
976 ik->set_fieldinfo_search_table(search_table);
977 MetadataFactory::free_array<u1>(k->class_loader_data(), old_table);
978
979 DEBUG_ONLY(FieldInfoStream::validate_search_table(ik->constants(), new_fis, search_table));
980 }
981 }
982
983 if (k->in_aot_cache() && k->has_archived_mirror_index()) {
984 if (HeapShared::is_archived_heap_in_use()) {
985 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
986 assert(present, "Missing archived mirror for %s", k->external_name());
987 return;
988 } else {
989 k->clear_java_mirror_handle();
990 k->clear_archived_mirror_index();
991 }
992 }
993 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
994 }
995
996 void java_lang_Class::initialize_mirror_fields(InstanceKlass* ik,
997 Handle mirror,
998 Handle protection_domain,
999 Handle classData,
1000 TRAPS) {
1001 // Allocate a simple java object for a lock.
1002 // This needs to be a java object because during class initialization
1003 // it can be held across a java call.
1004 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
1005 set_init_lock(mirror(), r);
1006
1007 // Set protection domain also
1008 set_protection_domain(mirror(), protection_domain());
1009
1010 // Initialize static fields
1011 ik->do_local_static_fields(&initialize_static_field, mirror, CHECK);
1012
1013 // Set classData
1014 set_class_data(mirror(), classData());
1015 }
1016
1017 // Set the java.lang.Module module field in the java_lang_Class mirror
1018 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
1019 if (CDSConfig::is_using_aot_linked_classes()) {
1020 oop archived_module = java_lang_Class::module(mirror());
1021 if (archived_module != nullptr) {
1022 precond(module() == nullptr || module() == archived_module);
1023 precond(AOTMetaspace::in_aot_cache_static_region((void*)k));
1024 return;
1025 }
1026 }
1027
1028 if (module.is_null()) {
1029 // During startup, the module may be null only if java.base has not been defined yet.
1030 // Put the class on the fixup_module_list to patch later when the java.lang.Module
1031 // for java.base is known. But note that since we captured the null module another
1032 // thread may have completed that initialization.
1033
1034 // With AOT-linked classes, java.base should have been defined before the
1035 // VM loads any classes.
1036 precond(!CDSConfig::is_using_aot_linked_classes());
1037
1038 bool javabase_was_defined = false;
1039 {
1040 MutexLocker m1(current, Module_lock);
1041 // Keep list of classes needing java.base module fixup
1042 if (!ModuleEntryTable::javabase_defined()) {
1043 assert(k->java_mirror() != nullptr, "Class's mirror is null");
1044 k->class_loader_data()->inc_keep_alive_ref_count();
1045 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
1046 fixup_module_field_list()->push(k);
1047 } else {
1048 javabase_was_defined = true;
1049 }
1050 }
1051
1052 // If java.base was already defined then patch this particular class with java.base.
1053 if (javabase_was_defined) {
1054 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
1055 assert(javabase_entry != nullptr && javabase_entry->module_oop() != nullptr,
1056 "Setting class module field, " JAVA_BASE_NAME " should be defined");
1057 Handle javabase_handle(current, javabase_entry->module_oop());
1058 set_module(mirror(), javabase_handle());
1059 }
1060 } else {
1061 assert(Universe::is_module_initialized() ||
1062 (ModuleEntryTable::javabase_defined() &&
1063 (module() == ModuleEntryTable::javabase_moduleEntry()->module_oop())),
1064 "Incorrect java.lang.Module specification while creating mirror");
1065 set_module(mirror(), module());
1066 }
1067 }
1068
1069 // Statically allocate fixup lists because they always get created.
1070 void java_lang_Class::allocate_fixup_lists() {
1071 if (!CDSConfig::is_using_aot_linked_classes()) {
1072 // fixup_mirror_list() is not used when we have preloaded classes. See
1073 // Universe::fixup_mirrors().
1074 GrowableArray<Klass*>* mirror_list =
1075 new (mtClass) GrowableArray<Klass*>(40, mtClass);
1076 set_fixup_mirror_list(mirror_list);
1077
1078 // With AOT-linked classes, java.base module is defined before any class
1079 // is loaded, so there's no need for fixup_module_field_list().
1080 GrowableArray<Klass*>* module_list =
1081 new (mtModule) GrowableArray<Klass*>(500, mtModule);
1082 set_fixup_module_field_list(module_list);
1083 }
1084 }
1085
1086 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1087 Handle& mirror, Handle& comp_mirror, TRAPS) {
1088 // Allocate mirror (java.lang.Class instance)
1089 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1090 mirror = Handle(THREAD, mirror_oop);
1091
1092 // Setup indirection from mirror->klass
1093 set_klass(mirror(), k);
1094
1095 // Set the modifiers flag.
1096 u2 computed_modifiers = k->compute_modifier_flags();
1097 set_modifiers(mirror(), computed_modifiers);
1098 set_is_identity(mirror(), k->is_array_klass() || k->is_identity_class());
1099
1100 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1101 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1102
1103 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1104
1105 // It might also have a component mirror. This mirror must already exist.
1106 if (k->is_array_klass()) {
1107 assert(!k->is_refined_objArray_klass(), "Should not be called with the refined array klasses");
1108
1109 // The Java code for array classes gets the access flags from the element type.
1110 set_raw_access_flags(mirror(), 0);
1111 if (k->is_typeArray_klass()) {
1112 BasicType type = TypeArrayKlass::cast(k)->element_type();
1113 if (is_scratch) {
1114 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1115 } else {
1116 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1117 }
1118 } else {
1119 assert(k->is_unrefined_objArray_klass(), "Must be");
1120 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1121 assert(element_klass != nullptr, "Must have an element klass");
1122 if (is_scratch) {
1123 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1124 } else {
1125 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1126 }
1127 }
1128 assert(comp_mirror() != nullptr, "must have a mirror");
1129
1130 // Two-way link between the array klass and its component mirror:
1131 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1132 set_component_mirror(mirror(), comp_mirror());
1133 // See below for ordering dependencies between field array_klass in component mirror
1134 // and java_mirror in this klass.
1135 } else {
1136 assert(k->is_instance_klass(), "Must be");
1137 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1138 set_raw_access_flags(mirror(), InstanceKlass::cast(k)->access_flags().as_unsigned_short());
1139 initialize_mirror_fields(InstanceKlass::cast(k), mirror, protection_domain, classData, THREAD);
1140 if (HAS_PENDING_EXCEPTION) {
1141 // If any of the fields throws an exception like OOM remove the klass field
1142 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1143 // This mirror looks like a primitive type, which logically it is because it
1144 // it represents no class.
1145 set_klass(mirror(), nullptr);
1146 return;
1147 }
1148 }
1149 }
1150
1151 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1152 Handle module, Handle protection_domain,
1153 Handle classData, TRAPS) {
1154 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1155 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1156 // Class_klass has to be loaded because it is used to allocate
1157 // the mirror.
1158 if (vmClasses::Class_klass_is_loaded()) {
1159
1160 if (k->is_refined_objArray_klass()) {
1161 Klass* super_klass = k->super();
1162 assert(super_klass != nullptr, "Must be");
1163 Handle mirror(THREAD, super_klass->java_mirror());
1164 k->set_java_mirror(mirror);
1165 return;
1166 }
1167
1168 Handle mirror;
1169 Handle comp_mirror;
1170
1171 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1172
1173 // set the classLoader field in the java_lang_Class instance
1174 assert(class_loader() == k->class_loader(), "should be same");
1175 set_class_loader(mirror(), class_loader());
1176
1177 // Setup indirection from klass->mirror
1178 // after any exceptions can happen during allocations.
1179 k->set_java_mirror(mirror);
1180
1181 // Set the module field in the java_lang_Class instance. This must be done
1182 // after the mirror is set.
1183 set_mirror_module_field(THREAD, k, mirror, module);
1184
1185 if (comp_mirror() != nullptr) {
1186 // Set after k->java_mirror() is published, because compiled code running
1187 // concurrently doesn't expect a k to have a null java_mirror.
1188 release_set_array_klass(comp_mirror(), k);
1189 }
1190
1191 if (CDSConfig::is_dumping_heap()) {
1192 create_scratch_mirror(k, CHECK);
1193 }
1194 } else {
1195 assert(!CDSConfig::is_using_aot_linked_classes(), "should not come here");
1196 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1197 fixup_mirror_list()->push(k);
1198 }
1199 }
1200
1201 #if INCLUDE_CDS_JAVA_HEAP
1202 // The "scratch mirror" stores the states of the mirror object that can be
1203 // decided at dump time (such as the initial values of the static fields, the
1204 // component mirror, etc). At runtime, more information is added to it by
1205 // java_lang_Class::restore_archived_mirror().
1206 //
1207 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1208 // produces the same result as /*runtime*/create_mirror().
1209 //
1210 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1211 // latter may contain dumptime-specific information that cannot be archived
1212 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1213 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1214 if ((k->class_loader() != nullptr &&
1215 k->class_loader() != SystemDictionary::java_platform_loader() &&
1216 k->class_loader() != SystemDictionary::java_system_loader())) {
1217 // We only archive the mirrors of classes loaded by the built-in loaders
1218 return;
1219 }
1220
1221 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1222 Handle mirror;
1223 Handle comp_mirror;
1224 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1225
1226 if (comp_mirror() != nullptr) {
1227 release_set_array_klass(comp_mirror(), k);
1228 }
1229
1230 HeapShared::set_scratch_java_mirror(k, mirror());
1231 }
1232
1233 // Returns true if the mirror is updated, false if no archived mirror
1234 // data is present. After the archived mirror object is restored, the
1235 // shared klass' _has_raw_archived_mirror flag is cleared.
1236 bool java_lang_Class::restore_archived_mirror(Klass *k,
1237 Handle class_loader, Handle module,
1238 Handle protection_domain, TRAPS) {
1239 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1240 // see more details in vmClasses::resolve_all().
1241 if (!vmClasses::Class_klass_is_loaded() && !CDSConfig::is_using_aot_linked_classes()) {
1242 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1243 fixup_mirror_list()->push(k);
1244 return true;
1245 }
1246
1247 oop m = k->archived_java_mirror();
1248 assert(m != nullptr, "must have stored non-null archived mirror");
1249
1250 // Sanity: clear it now to prevent re-initialization if any of the following fails
1251 k->clear_archived_mirror_index();
1252
1253 // mirror is archived, restore
1254 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1255 Handle mirror(THREAD, m);
1256
1257 if (!k->is_array_klass()) {
1258 assert(as_Klass(m) == k, "must be");
1259 // - local static final fields with initial values were initialized at dump time
1260 assert(init_lock(mirror()) != nullptr, "allocated during AOT assembly");
1261
1262 if (protection_domain.not_null()) {
1263 set_protection_domain(mirror(), protection_domain());
1264 }
1265 } else if (k->is_objArray_klass()) {
1266 ObjArrayKlass* objarray_k = (ObjArrayKlass*)as_Klass(m);
1267 // Mirror should be restored for an ObjArrayKlass or one of its refined array klasses
1268 assert(objarray_k == k || objarray_k->find_refined_array_klass((ObjArrayKlass*)k), "must be");
1269 }
1270
1271 assert(class_loader() == k->class_loader(), "should be same");
1272 if (class_loader.not_null()) {
1273 set_class_loader(mirror(), class_loader());
1274 }
1275
1276 k->set_java_mirror(mirror);
1277
1278 set_mirror_module_field(THREAD, k, mirror, module);
1279
1280 if (log_is_enabled(Trace, aot, heap, mirror)) {
1281 ResourceMark rm(THREAD);
1282 log_trace(aot, heap, mirror)(
1283 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1284 }
1285
1286 if (CDSConfig::is_dumping_heap() && (!k->is_refined_objArray_klass())) {
1287 create_scratch_mirror(k, CHECK_(false));
1288 }
1289
1290 return true;
1291 }
1292 #endif // INCLUDE_CDS_JAVA_HEAP
1293
1294 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1295 assert(_module_offset != 0, "must have been computed already");
1296 set_module(k->java_mirror(), module());
1297 }
1298
1299 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1300 assert(_oop_size_offset != 0, "must be set");
1301 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1302 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1303 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1304 }
1305
1306 int java_lang_Class::static_oop_field_count(oop java_class) {
1307 assert(_static_oop_field_count_offset != 0, "must be set");
1308 return java_class->int_field(_static_oop_field_count_offset);
1309 }
1310
1311 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1312 assert(_static_oop_field_count_offset != 0, "must be set");
1313 java_class->int_field_put(_static_oop_field_count_offset, size);
1314 }
1315
1316 oop java_lang_Class::protection_domain(oop java_class) {
1317 assert(_protection_domain_offset != 0, "must be set");
1318 return java_class->obj_field(_protection_domain_offset);
1319 }
1320 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1321 assert(_protection_domain_offset != 0, "must be set");
1322 java_class->obj_field_put(_protection_domain_offset, pd);
1323 }
1324
1325 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1326 assert(_component_mirror_offset != 0, "must be set");
1327 assert(java_lang_Class::as_Klass(java_class) != nullptr &&
1328 java_lang_Class::as_Klass(java_class)->is_array_klass(), "must be");
1329 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1330 }
1331
1332 oop java_lang_Class::component_mirror(oop java_class) {
1333 assert(_component_mirror_offset != 0, "must be set");
1334 return java_class->obj_field(_component_mirror_offset);
1335 }
1336
1337 oop java_lang_Class::init_lock(oop java_class) {
1338 assert(_init_lock_offset != 0, "must be set");
1339 return java_class->obj_field(_init_lock_offset);
1340 }
1341 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1342 assert(_init_lock_offset != 0, "must be set");
1343 java_class->obj_field_put(_init_lock_offset, init_lock);
1344 }
1345
1346 objArrayOop java_lang_Class::signers(oop java_class) {
1347 assert(_signers_offset != 0, "must be set");
1348 return (objArrayOop)java_class->obj_field(_signers_offset);
1349 }
1350
1351 oop java_lang_Class::class_data(oop java_class) {
1352 assert(_classData_offset != 0, "must be set");
1353 return java_class->obj_field(_classData_offset);
1354 }
1355 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1356 assert(_classData_offset != 0, "must be set");
1357 java_class->obj_field_put(_classData_offset, class_data);
1358 }
1359
1360 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1361 assert(_class_loader_offset != 0, "offsets should have been initialized");
1362 java_class->obj_field_put(_class_loader_offset, loader);
1363 }
1364
1365 oop java_lang_Class::class_loader(oop java_class) {
1366 assert(_class_loader_offset != 0, "must be set");
1367 return java_class->obj_field(_class_loader_offset);
1368 }
1369
1370 oop java_lang_Class::module(oop java_class) {
1371 assert(_module_offset != 0, "must be set");
1372 return java_class->obj_field(_module_offset);
1373 }
1374
1375 void java_lang_Class::set_module(oop java_class, oop module) {
1376 assert(_module_offset != 0, "must be set");
1377 java_class->obj_field_put(_module_offset, module);
1378 }
1379
1380 oop java_lang_Class::name(Handle java_class, TRAPS) {
1381 assert(_name_offset != 0, "must be set");
1382 oop o = java_class->obj_field(_name_offset);
1383 if (o == nullptr) {
1384 o = StringTable::intern(as_external_name(java_class()), THREAD);
1385 java_class->obj_field_put(_name_offset, o);
1386 }
1387 return o;
1388 }
1389
1390 oop java_lang_Class::source_file(oop java_class) {
1391 assert(_source_file_offset != 0, "must be set");
1392 return java_class->obj_field(_source_file_offset);
1393 }
1394
1395 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1396 assert(_source_file_offset != 0, "must be set");
1397 java_class->obj_field_put(_source_file_offset, source_file);
1398 }
1399
1400 void java_lang_Class::set_is_primitive(oop java_class) {
1401 assert(_is_primitive_offset != 0, "must be set");
1402 java_class->bool_field_put(_is_primitive_offset, true);
1403 }
1404
1405 void java_lang_Class::set_is_identity(oop java_class, bool value) {
1406 assert(_is_identity_offset != 0, "must be set");
1407 java_class->bool_field_put(_is_identity_offset, value);
1408 }
1409
1410 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1411 // Mirrors for basic types have a null klass field, which makes them special.
1412 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1413 if (type != T_VOID) {
1414 Klass* aklass = Universe::typeArrayKlass(type);
1415 assert(aklass != nullptr, "correct bootstrap");
1416 release_set_array_klass(java_class, aklass);
1417 }
1418 #ifdef ASSERT
1419 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1420 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1421 #endif
1422 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1423 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1424
1425 set_is_primitive(java_class);
1426 return java_class;
1427 }
1428
1429 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1430 assert(is_instance(java_class), "must be a Class object");
1431 java_class->metadata_field_put(_klass_offset, klass);
1432 }
1433
1434
1435 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1436 assert(is_instance(java_class), "must be a Class object");
1437 Symbol* name = nullptr;
1438 bool is_instance = false;
1439 if (is_primitive(java_class)) {
1440 name = vmSymbols::type_signature(primitive_type(java_class));
1441 } else {
1442 Klass* k = as_Klass(java_class);
1443 is_instance = k->is_instance_klass();
1444 name = k->name();
1445 }
1446 if (name == nullptr) {
1447 st->print("<null>");
1448 return;
1449 }
1450 if (is_instance) {
1451 st->print("L");
1452 }
1453 st->write((char*) name->base(), (int) name->utf8_length());
1454 if (is_instance) st->print(";");
1455 }
1456
1457 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1458 assert(is_instance(java_class), "must be a Class object");
1459 Symbol* name;
1460 if (is_primitive(java_class)) {
1461 name = vmSymbols::type_signature(primitive_type(java_class));
1462 // Because this can create a new symbol, the caller has to decrement
1463 // the refcount, so make adjustment here and below for symbols returned
1464 // that are not created or incremented due to a successful lookup.
1465 name->increment_refcount();
1466 } else {
1467 Klass* k = as_Klass(java_class);
1468 if (!k->is_instance_klass()) {
1469 name = k->name();
1470 name->increment_refcount();
1471 } else {
1472 ResourceMark rm;
1473 const char* sigstr = k->signature_name();
1474 int siglen = (int) strlen(sigstr);
1475 if (!intern_if_not_found) {
1476 name = SymbolTable::probe(sigstr, siglen);
1477 } else {
1478 name = SymbolTable::new_symbol(sigstr, siglen);
1479 }
1480 }
1481 }
1482 return name;
1483 }
1484
1485 // Returns the Java name for this Java mirror (Resource allocated)
1486 // See Klass::external_name().
1487 // For primitive type Java mirrors, its type name is returned.
1488 const char* java_lang_Class::as_external_name(oop java_class) {
1489 assert(is_instance(java_class), "must be a Class object");
1490 const char* name = nullptr;
1491 if (is_primitive(java_class)) {
1492 name = type2name(primitive_type(java_class));
1493 } else {
1494 name = as_Klass(java_class)->external_name();
1495 }
1496 if (name == nullptr) {
1497 name = "<null>";
1498 }
1499 return name;
1500 }
1501
1502 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1503 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1504 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1505 return k;
1506 }
1507
1508 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1509 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1510 assert(!klass->is_refined_objArray_klass(), "should not be ref or flat array klass");
1511 java_class->release_metadata_field_put(_array_klass_offset, klass);
1512 }
1513
1514
1515 BasicType java_lang_Class::primitive_type(oop java_class) {
1516 assert(is_primitive(java_class), "just checking");
1517 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1518 BasicType type = T_VOID;
1519 if (ak != nullptr) {
1520 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1521 type = ArrayKlass::cast(ak)->element_type();
1522 } else {
1523 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1524 }
1525 #ifdef ASSERT
1526 if (CDSConfig::is_dumping_heap()) {
1527 oop mirror = Universe::java_mirror(type);
1528 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1529 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1530 } else {
1531 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1532 }
1533 #endif
1534 return type;
1535 }
1536
1537 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1538 assert(is_instance(java_class), "must be a Class object");
1539 if (is_primitive(java_class)) {
1540 if (reference_klass != nullptr)
1541 (*reference_klass) = nullptr;
1542 return primitive_type(java_class);
1543 } else {
1544 if (reference_klass != nullptr)
1545 (*reference_klass) = as_Klass(java_class);
1546 return T_OBJECT;
1547 }
1548 }
1549
1550
1551 oop java_lang_Class::primitive_mirror(BasicType t) {
1552 oop mirror = Universe::java_mirror(t);
1553 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1554 assert(is_primitive(mirror), "must be primitive");
1555 return mirror;
1556 }
1557
1558 #define CLASS_FIELDS_DO(macro) \
1559 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1560 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1561 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1562 macro(_module_offset, k, "module", module_signature, false); \
1563 macro(_name_offset, k, "name", string_signature, false); \
1564 macro(_classData_offset, k, "classData", object_signature, false); \
1565 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1566 macro(_signers_offset, k, "signers", object_array_signature, false); \
1567 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), char_signature, false); \
1568 macro(_raw_access_flags_offset, k, "classFileAccessFlags", char_signature, false); \
1569 macro(_protection_domain_offset, k, "protectionDomain", java_security_ProtectionDomain_signature, false); \
1570 macro(_is_primitive_offset, k, "primitive", bool_signature, false); \
1571 macro(_is_identity_offset, k, "identity", bool_signature, false);
1572
1573 void java_lang_Class::compute_offsets() {
1574 if (_offsets_computed) {
1575 return;
1576 }
1577
1578 _offsets_computed = true;
1579
1580 InstanceKlass* k = vmClasses::Class_klass();
1581 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1582 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1583 }
1584
1585 #if INCLUDE_CDS
1586 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1587 f->do_bool(&_offsets_computed);
1588
1589 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1590
1591 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1592 }
1593 #endif
1594
1595 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1596 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1597 return the_class_mirror->int_field(_classRedefinedCount_offset);
1598 }
1599
1600 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1601 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1602 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1603 }
1604
1605 int java_lang_Class::modifiers(oop the_class_mirror) {
1606 assert(_modifiers_offset != 0, "offsets should have been initialized");
1607 return the_class_mirror->char_field(_modifiers_offset);
1608 }
1609
1610 void java_lang_Class::set_modifiers(oop the_class_mirror, u2 value) {
1611 assert(_modifiers_offset != 0, "offsets should have been initialized");
1612 the_class_mirror->char_field_put(_modifiers_offset, value);
1613 }
1614
1615 void java_lang_Class::set_raw_access_flags(oop the_class_mirror, u2 value) {
1616 assert(_raw_access_flags_offset != 0, "offsets should have been initialized");
1617 the_class_mirror->char_field_put(_raw_access_flags_offset, value);
1618 }
1619
1620
1621 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1622 // platform thread structure, and a eetop offset which was used for thread
1623 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1624 // merged, so in the HotSpot VM we just use the eetop field for the thread
1625 // instead of the privateInfo_offset.
1626 //
1627 // Note: The stackSize field is only present starting in 1.4.
1628
1629 int java_lang_Thread_FieldHolder::_group_offset;
1630 int java_lang_Thread_FieldHolder::_priority_offset;
1631 int java_lang_Thread_FieldHolder::_stackSize_offset;
1632 int java_lang_Thread_FieldHolder::_daemon_offset;
1633 int java_lang_Thread_FieldHolder::_thread_status_offset;
1634
1635 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1636 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1637 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1638 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1639 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1640 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1641
1642 void java_lang_Thread_FieldHolder::compute_offsets() {
1643 assert(_group_offset == 0, "offsets should be initialized only once");
1644
1645 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1646 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1647 }
1648
1649 #if INCLUDE_CDS
1650 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1651 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1652 }
1653 #endif
1654
1655 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1656 return holder->obj_field(_group_offset);
1657 }
1658
1659 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1660 return (ThreadPriority)holder->int_field(_priority_offset);
1661 }
1662
1663 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1664 holder->int_field_put(_priority_offset, priority);
1665 }
1666
1667 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1668 return holder->long_field(_stackSize_offset);
1669 }
1670
1671 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1672 return holder->bool_field(_daemon_offset) != 0;
1673 }
1674
1675 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1676 assert(val, "daemon status is never turned off");
1677 holder->bool_field_put(_daemon_offset, val);
1678 }
1679
1680 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1681 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1682 }
1683
1684 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1685 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1686 }
1687
1688
1689 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1690
1691 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1692 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1693
1694 void java_lang_Thread_Constants::compute_offsets() {
1695 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1696
1697 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1698 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1699 }
1700
1701 #if INCLUDE_CDS
1702 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1703 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1704 }
1705 #endif
1706
1707 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1708 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1709 oop base = k->static_field_base_raw();
1710 return base->obj_field(_static_VTHREAD_GROUP_offset);
1711 }
1712
1713
1714 int java_lang_Thread::_holder_offset;
1715 int java_lang_Thread::_name_offset;
1716 int java_lang_Thread::_contextClassLoader_offset;
1717 int java_lang_Thread::_eetop_offset;
1718 int java_lang_Thread::_jvmti_thread_state_offset;
1719 int java_lang_Thread::_vthread_transition_disable_count_offset;
1720 int java_lang_Thread::_is_in_vthread_transition_offset;
1721 int java_lang_Thread::_interrupted_offset;
1722 int java_lang_Thread::_interruptLock_offset;
1723 int java_lang_Thread::_tid_offset;
1724 int java_lang_Thread::_continuation_offset;
1725 int java_lang_Thread::_park_blocker_offset;
1726 int java_lang_Thread::_scopedValueBindings_offset;
1727 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1728
1729 #define THREAD_FIELDS_DO(macro) \
1730 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1731 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1732 macro(_contextClassLoader_offset, k, "contextClassLoader", classloader_signature, false); \
1733 macro(_eetop_offset, k, "eetop", long_signature, false); \
1734 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1735 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1736 macro(_tid_offset, k, "tid", long_signature, false); \
1737 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1738 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1739 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1740
1741 void java_lang_Thread::compute_offsets() {
1742 assert(_holder_offset == 0, "offsets should be initialized only once");
1743
1744 InstanceKlass* k = vmClasses::Thread_klass();
1745 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1746 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1747 }
1748
1749 #if INCLUDE_CDS
1750 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1751 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1752 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1753 }
1754 #endif
1755
1756 JavaThread* java_lang_Thread::thread(oop java_thread) {
1757 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1758 }
1759
1760 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1761 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1762 }
1763
1764 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1765 java_thread->address_field_put(_eetop_offset, (address)thread);
1766 }
1767
1768 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1769 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1770 }
1771
1772 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1773 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1774 }
1775
1776 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1777 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1778 }
1779
1780 int java_lang_Thread::vthread_transition_disable_count(oop java_thread) {
1781 jint* addr = java_thread->field_addr<jint>(_vthread_transition_disable_count_offset);
1782 return AtomicAccess::load(addr);
1783 }
1784
1785 void java_lang_Thread::inc_vthread_transition_disable_count(oop java_thread) {
1786 assert(VThreadTransition_lock->owned_by_self(), "Must be locked");
1787 jint* addr = java_thread->field_addr<jint>(_vthread_transition_disable_count_offset);
1788 int val = AtomicAccess::load(addr);
1789 AtomicAccess::store(addr, val + 1);
1790 }
1791
1792 void java_lang_Thread::dec_vthread_transition_disable_count(oop java_thread) {
1793 assert(VThreadTransition_lock->owned_by_self(), "Must be locked");
1794 jint* addr = java_thread->field_addr<jint>(_vthread_transition_disable_count_offset);
1795 int val = AtomicAccess::load(addr);
1796 AtomicAccess::store(addr, val - 1);
1797 }
1798
1799 bool java_lang_Thread::is_in_vthread_transition(oop java_thread) {
1800 jboolean* addr = java_thread->field_addr<jboolean>(_is_in_vthread_transition_offset);
1801 return AtomicAccess::load(addr);
1802 }
1803
1804 void java_lang_Thread::set_is_in_vthread_transition(oop java_thread, bool val) {
1805 assert(is_in_vthread_transition(java_thread) != val, "already %s transition", val ? "inside" : "outside");
1806 jboolean* addr = java_thread->field_addr<jboolean>(_is_in_vthread_transition_offset);
1807 AtomicAccess::store(addr, (jboolean)val);
1808 }
1809
1810 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1811 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1812 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1813 }
1814
1815 oop java_lang_Thread::holder(oop java_thread) {
1816 // Note: may return null if the thread is still attaching
1817 return java_thread->obj_field(_holder_offset);
1818 }
1819 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1820 return java_thread->obj_field(_interruptLock_offset);
1821 }
1822
1823 bool java_lang_Thread::interrupted(oop java_thread) {
1824 // Make sure the caller can safely access oops.
1825 assert(Thread::current()->is_VM_thread() ||
1826 (JavaThread::current()->thread_state() != _thread_blocked &&
1827 JavaThread::current()->thread_state() != _thread_in_native),
1828 "Unsafe access to oop");
1829 return java_thread->bool_field_volatile(_interrupted_offset);
1830 }
1831
1832 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1833 // Make sure the caller can safely access oops.
1834 assert(Thread::current()->is_VM_thread() ||
1835 (JavaThread::current()->thread_state() != _thread_blocked &&
1836 JavaThread::current()->thread_state() != _thread_in_native),
1837 "Unsafe access to oop");
1838 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1839 }
1840
1841
1842 oop java_lang_Thread::name(oop java_thread) {
1843 return java_thread->obj_field(_name_offset);
1844 }
1845
1846
1847 void java_lang_Thread::set_name(oop java_thread, oop name) {
1848 java_thread->obj_field_put(_name_offset, name);
1849 }
1850
1851 // Convenience macros for setting and getting Thread fields that
1852 // are actually stored in the FieldHolder object of the thread.
1853 // The FieldHolder can be null whilst a thread is attaching via
1854 // JNI, and when the main thread is attaching.
1855
1856 // The default value should be the default/zero initialized value
1857 // of the field as it would be in java.lang.Thread.FieldHolder.
1858 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1859 { \
1860 oop holder = java_lang_Thread::holder(java_thread); \
1861 if (holder != nullptr) \
1862 return java_lang_Thread_FieldHolder::field(holder); \
1863 else \
1864 return default_val; \
1865 }
1866
1867 // We should never be trying to set a field of an attaching thread.
1868 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1869 { \
1870 oop holder = java_lang_Thread::holder(java_thread); \
1871 assert(holder != nullptr, "Thread not fully initialized"); \
1872 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1873 }
1874
1875
1876 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1877 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1878 }
1879
1880
1881 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1882 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1883 }
1884
1885
1886 oop java_lang_Thread::threadGroup(oop java_thread) {
1887 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1888 }
1889
1890
1891 bool java_lang_Thread::is_alive(oop java_thread) {
1892 JavaThread* thr = java_lang_Thread::thread(java_thread);
1893 return (thr != nullptr);
1894 }
1895
1896
1897 bool java_lang_Thread::is_daemon(oop java_thread) {
1898 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1899 }
1900
1901
1902 void java_lang_Thread::set_daemon(oop java_thread) {
1903 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1904 }
1905
1906 oop java_lang_Thread::context_class_loader(oop java_thread) {
1907 return java_thread->obj_field(_contextClassLoader_offset);
1908 }
1909
1910
1911 jlong java_lang_Thread::stackSize(oop java_thread) {
1912 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1913 }
1914
1915 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1916 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1917 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1918 }
1919
1920 // Read thread status value from threadStatus field in java.lang.Thread java class.
1921 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1922 // Make sure the caller is operating on behalf of the VM or is
1923 // running VM code (state == _thread_in_vm).
1924 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1925 JavaThread::current()->thread_state() == _thread_in_vm ||
1926 JavaThread::current() == java_lang_Thread::thread(java_thread),
1927 "unsafe call to java_lang_Thread::get_thread_status()?");
1928 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1929 }
1930
1931 ByteSize java_lang_Thread::thread_id_offset() {
1932 return in_ByteSize(_tid_offset);
1933 }
1934
1935 oop java_lang_Thread::park_blocker(oop java_thread) {
1936 return java_thread->obj_field_access<MO_RELAXED>(_park_blocker_offset);
1937 }
1938
1939 // Obtain stack trace for a platform or virtual thread.
1940 oop java_lang_Thread::async_get_stack_trace(jobject jthread, TRAPS) {
1941 ThreadsListHandle tlh(THREAD);
1942 JavaThread* java_thread = nullptr;
1943 oop thread_oop = nullptr;
1944
1945 bool has_java_thread = tlh.cv_internal_thread_to_JavaThread(jthread, &java_thread, &thread_oop);
1946 assert(thread_oop != nullptr, "Missing Thread oop");
1947 bool is_virtual = java_lang_VirtualThread::is_instance(thread_oop);
1948 if (!has_java_thread && !is_virtual) {
1949 return nullptr;
1950 }
1951
1952 class GetStackTraceHandshakeClosure : public HandshakeClosure {
1953 public:
1954 const Handle _thread_h;
1955 int _depth;
1956 enum InitLength { len = 64 }; // Minimum length that covers most cases
1957 GrowableArrayCHeap<Method*, mtInternal> _methods;
1958 GrowableArrayCHeap<int, mtInternal> _bcis;
1959
1960 GetStackTraceHandshakeClosure(Handle thread_h) :
1961 HandshakeClosure("GetStackTraceHandshakeClosure"), _thread_h(thread_h), _depth(0),
1962 _methods(InitLength::len), _bcis(InitLength::len) {
1963 }
1964
1965 void do_thread(Thread* th) {
1966 JavaThread* java_thread = th != nullptr ? JavaThread::cast(th) : nullptr;
1967 if (java_thread != nullptr && !java_thread->has_last_Java_frame()) {
1968 // stack trace is empty
1969 return;
1970 }
1971
1972 bool is_virtual = java_lang_VirtualThread::is_instance(_thread_h());
1973 bool vthread_carrier = !is_virtual && (java_thread->vthread_continuation() != nullptr);
1974
1975 const int max_depth = MaxJavaStackTraceDepth;
1976 const bool skip_hidden = !ShowHiddenFrames;
1977
1978 int total_count = 0;
1979 vframeStream vfst(java_thread != nullptr
1980 ? vframeStream(java_thread, false, false, vthread_carrier) // we don't process frames as we don't care about oops
1981 : vframeStream(java_lang_VirtualThread::continuation(_thread_h())));
1982 for (;
1983 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1984 vfst.next()) {
1985
1986 if (skip_hidden && (vfst.method()->is_hidden() ||
1987 vfst.method()->is_continuation_enter_intrinsic())) {
1988 continue;
1989 }
1990
1991 _methods.push(vfst.method());
1992 _bcis.push(vfst.bci());
1993 total_count++;
1994 }
1995
1996 _depth = total_count;
1997 }
1998 };
1999
2000 // Handshake with target
2001 ResourceMark rm(THREAD);
2002 HandleMark hm(THREAD);
2003 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
2004 if (is_virtual) {
2005 Handshake::execute(&gsthc, thread_oop);
2006 } else {
2007 Handshake::execute(&gsthc, &tlh, java_thread);
2008 }
2009
2010 // Stop if no stack trace is found.
2011 if (gsthc._depth == 0) {
2012 return nullptr;
2013 }
2014
2015 // Convert to StackTraceElement array
2016 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2017 assert(k != nullptr, "must be loaded in 1.4+");
2018 if (k->should_be_initialized()) {
2019 k->initialize(CHECK_NULL);
2020 }
2021 refArrayHandle trace = oopFactory::new_refArray_handle(k, gsthc._depth, CHECK_NULL);
2022
2023 for (int i = 0; i < gsthc._depth; i++) {
2024 methodHandle method(THREAD, gsthc._methods.at(i));
2025 oop element = java_lang_StackTraceElement::create(method,
2026 gsthc._bcis.at(i),
2027 CHECK_NULL);
2028 trace->obj_at_put(i, element);
2029 }
2030
2031 return trace();
2032 }
2033
2034 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2035 JavaThreadStatus status = get_thread_status(java_thread);
2036 switch (status) {
2037 case JavaThreadStatus::NEW : return "NEW";
2038 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2039 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2040 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2041 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2042 case JavaThreadStatus::PARKED : return "WAITING (parking)";
2043 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
2044 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
2045 case JavaThreadStatus::TERMINATED : return "TERMINATED";
2046 default : return "UNKNOWN";
2047 };
2048 }
2049 int java_lang_ThreadGroup::_parent_offset;
2050 int java_lang_ThreadGroup::_name_offset;
2051 int java_lang_ThreadGroup::_maxPriority_offset;
2052 int java_lang_ThreadGroup::_daemon_offset;
2053
2054 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
2055 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2056 return java_thread_group->obj_field(_parent_offset);
2057 }
2058
2059 // ("name as oop" accessor is not necessary)
2060
2061 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
2062 oop name = java_thread_group->obj_field(_name_offset);
2063 // ThreadGroup.name can be null
2064 if (name != nullptr) {
2065 return java_lang_String::as_utf8_string(name);
2066 }
2067 return nullptr;
2068 }
2069
2070 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
2071 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2072 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
2073 }
2074
2075 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
2076 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2077 return java_thread_group->bool_field(_daemon_offset) != 0;
2078 }
2079
2080 #define THREADGROUP_FIELDS_DO(macro) \
2081 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
2082 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2083 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
2084 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
2085
2086 void java_lang_ThreadGroup::compute_offsets() {
2087 assert(_parent_offset == 0, "offsets should be initialized only once");
2088
2089 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2090 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2091 }
2092
2093 #if INCLUDE_CDS
2094 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2095 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2096 }
2097 #endif
2098
2099
2100 // java_lang_VirtualThread
2101
2102 int java_lang_VirtualThread::static_vthread_scope_offset;
2103 int java_lang_VirtualThread::_carrierThread_offset;
2104 int java_lang_VirtualThread::_continuation_offset;
2105 int java_lang_VirtualThread::_state_offset;
2106 int java_lang_VirtualThread::_next_offset;
2107 int java_lang_VirtualThread::_onWaitingList_offset;
2108 int java_lang_VirtualThread::_notified_offset;
2109 int java_lang_VirtualThread::_interruptible_wait_offset;
2110 int java_lang_VirtualThread::_timeout_offset;
2111 int java_lang_VirtualThread::_objectWaiter_offset;
2112
2113 #define VTHREAD_FIELDS_DO(macro) \
2114 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
2115 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
2116 macro(_continuation_offset, k, "cont", continuation_signature, false); \
2117 macro(_state_offset, k, "state", int_signature, false); \
2118 macro(_next_offset, k, "next", vthread_signature, false); \
2119 macro(_onWaitingList_offset, k, "onWaitingList", bool_signature, false); \
2120 macro(_notified_offset, k, "notified", bool_signature, false); \
2121 macro(_interruptible_wait_offset, k, "interruptibleWait", bool_signature, false); \
2122 macro(_timeout_offset, k, "timeout", long_signature, false);
2123
2124
2125 void java_lang_VirtualThread::compute_offsets() {
2126 InstanceKlass* k = vmClasses::VirtualThread_klass();
2127 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2128 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2129 }
2130
2131 bool java_lang_VirtualThread::is_instance(oop obj) {
2132 return obj != nullptr && is_subclass(obj->klass());
2133 }
2134
2135 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2136 oop thread = vthread->obj_field(_carrierThread_offset);
2137 return thread;
2138 }
2139
2140 oop java_lang_VirtualThread::continuation(oop vthread) {
2141 oop cont = vthread->obj_field(_continuation_offset);
2142 return cont;
2143 }
2144
2145 int java_lang_VirtualThread::state(oop vthread) {
2146 return vthread->int_field_acquire(_state_offset);
2147 }
2148
2149 void java_lang_VirtualThread::set_state(oop vthread, int state) {
2150 vthread->release_int_field_put(_state_offset, state);
2151 }
2152
2153 int java_lang_VirtualThread::cmpxchg_state(oop vthread, int old_state, int new_state) {
2154 jint* addr = vthread->field_addr<jint>(_state_offset);
2155 int res = AtomicAccess::cmpxchg(addr, old_state, new_state);
2156 return res;
2157 }
2158
2159 oop java_lang_VirtualThread::next(oop vthread) {
2160 return vthread->obj_field(_next_offset);
2161 }
2162
2163 void java_lang_VirtualThread::set_next(oop vthread, oop next_vthread) {
2164 vthread->obj_field_put(_next_offset, next_vthread);
2165 }
2166
2167 // Add vthread to the waiting list if it's not already in it. Multiple threads
2168 // could be trying to add vthread to the list at the same time, so we control
2169 // access with a cmpxchg on onWaitingList. The winner adds vthread to the list.
2170 // Method returns true if we added vthread to the list, false otherwise.
2171 bool java_lang_VirtualThread::set_onWaitingList(oop vthread, OopHandle& list_head) {
2172 jboolean* addr = vthread->field_addr<jboolean>(_onWaitingList_offset);
2173 jboolean vthread_on_list = AtomicAccess::load(addr);
2174 if (!vthread_on_list) {
2175 vthread_on_list = AtomicAccess::cmpxchg(addr, (jboolean)JNI_FALSE, (jboolean)JNI_TRUE);
2176 if (!vthread_on_list) {
2177 for (;;) {
2178 oop head = list_head.resolve();
2179 java_lang_VirtualThread::set_next(vthread, head);
2180 if (list_head.cmpxchg(head, vthread) == head) return true;
2181 }
2182 }
2183 }
2184 return false; // already on waiting list
2185 }
2186
2187 void java_lang_VirtualThread::set_notified(oop vthread, jboolean value) {
2188 vthread->bool_field_put_volatile(_notified_offset, value);
2189 }
2190
2191 void java_lang_VirtualThread::set_interruptible_wait(oop vthread, jboolean value) {
2192 vthread->bool_field_put_volatile(_interruptible_wait_offset, value);
2193 }
2194
2195 jlong java_lang_VirtualThread::timeout(oop vthread) {
2196 return vthread->long_field(_timeout_offset);
2197 }
2198
2199 void java_lang_VirtualThread::set_timeout(oop vthread, jlong value) {
2200 vthread->long_field_put(_timeout_offset, value);
2201 }
2202
2203 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2204 JavaThreadStatus status = JavaThreadStatus::NEW;
2205 switch (state) {
2206 case NEW:
2207 status = JavaThreadStatus::NEW;
2208 break;
2209 case STARTED:
2210 case RUNNING:
2211 case PARKING:
2212 case TIMED_PARKING:
2213 case UNPARKED:
2214 case YIELDING:
2215 case YIELDED:
2216 case UNBLOCKED:
2217 case WAITING:
2218 case TIMED_WAITING:
2219 status = JavaThreadStatus::RUNNABLE;
2220 break;
2221 case PARKED:
2222 case PINNED:
2223 status = JavaThreadStatus::PARKED;
2224 break;
2225 case TIMED_PARKED:
2226 case TIMED_PINNED:
2227 status = JavaThreadStatus::PARKED_TIMED;
2228 break;
2229 case BLOCKING:
2230 case BLOCKED:
2231 status = JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER;
2232 break;
2233 case WAIT:
2234 status = JavaThreadStatus::IN_OBJECT_WAIT;
2235 break;
2236 case TIMED_WAIT:
2237 status = JavaThreadStatus::IN_OBJECT_WAIT_TIMED;
2238 break;
2239 case TERMINATED:
2240 status = JavaThreadStatus::TERMINATED;
2241 break;
2242 default:
2243 ShouldNotReachHere();
2244 }
2245 return status;
2246 }
2247
2248 ObjectMonitor* java_lang_VirtualThread::current_pending_monitor(oop vthread) {
2249 ObjectWaiter* waiter = objectWaiter(vthread);
2250 if (waiter != nullptr && waiter->at_monitorenter()) {
2251 return waiter->monitor();
2252 }
2253 return nullptr;
2254 }
2255
2256 ObjectMonitor* java_lang_VirtualThread::current_waiting_monitor(oop vthread) {
2257 ObjectWaiter* waiter = objectWaiter(vthread);
2258 if (waiter != nullptr && waiter->is_wait()) {
2259 return waiter->monitor();
2260 }
2261 return nullptr;
2262 }
2263
2264 bool java_lang_VirtualThread::is_preempted(oop vthread) {
2265 oop continuation = java_lang_VirtualThread::continuation(vthread);
2266 assert(continuation != nullptr, "vthread with no continuation");
2267 stackChunkOop chunk = jdk_internal_vm_Continuation::tail(continuation);
2268 return chunk != nullptr && chunk->preempted();
2269 }
2270
2271 #if INCLUDE_CDS
2272 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2273 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2274 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2275 }
2276 #endif
2277
2278 // java_lang_Throwable
2279
2280 int java_lang_Throwable::_backtrace_offset;
2281 int java_lang_Throwable::_detailMessage_offset;
2282 int java_lang_Throwable::_stackTrace_offset;
2283 int java_lang_Throwable::_depth_offset;
2284 int java_lang_Throwable::_cause_offset;
2285 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2286
2287 #define THROWABLE_FIELDS_DO(macro) \
2288 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2289 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2290 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2291 macro(_depth_offset, k, "depth", int_signature, false); \
2292 macro(_cause_offset, k, "cause", throwable_signature, false); \
2293 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2294
2295 void java_lang_Throwable::compute_offsets() {
2296 InstanceKlass* k = vmClasses::Throwable_klass();
2297 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2298 }
2299
2300 #if INCLUDE_CDS
2301 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2302 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2303 }
2304 #endif
2305
2306 oop java_lang_Throwable::unassigned_stacktrace() {
2307 InstanceKlass* ik = vmClasses::Throwable_klass();
2308 oop base = ik->static_field_base_raw();
2309 return base->obj_field(_static_unassigned_stacktrace_offset);
2310 }
2311
2312 refArrayOop java_lang_Throwable::backtrace(oop throwable) {
2313 return (refArrayOop)throwable->obj_field_acquire(_backtrace_offset);
2314 }
2315
2316
2317 void java_lang_Throwable::set_backtrace(oop throwable, refArrayOop value) {
2318 throwable->release_obj_field_put(_backtrace_offset, value);
2319 }
2320
2321 int java_lang_Throwable::depth(oop throwable) {
2322 return throwable->int_field(_depth_offset);
2323 }
2324
2325 void java_lang_Throwable::set_depth(oop throwable, int value) {
2326 throwable->int_field_put(_depth_offset, value);
2327 }
2328
2329 oop java_lang_Throwable::message(oop throwable) {
2330 return throwable->obj_field(_detailMessage_offset);
2331 }
2332
2333 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2334 oop msg = java_lang_Throwable::message(throwable);
2335 const char* msg_utf8 = nullptr;
2336 if (msg != nullptr) {
2337 msg_utf8 = java_lang_String::as_utf8_string(msg);
2338 }
2339 return msg_utf8;
2340 }
2341
2342 oop java_lang_Throwable::cause(oop throwable) {
2343 return throwable->obj_field(_cause_offset);
2344 }
2345
2346 void java_lang_Throwable::set_message(oop throwable, oop value) {
2347 throwable->obj_field_put(_detailMessage_offset, value);
2348 }
2349
2350
2351 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2352 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2353 }
2354
2355 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2356 set_stacktrace(throwable, nullptr);
2357 }
2358
2359
2360 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2361 ResourceMark rm;
2362 Klass* k = throwable->klass();
2363 assert(k != nullptr, "just checking");
2364 st->print("%s", k->external_name());
2365 oop msg = message(throwable);
2366 if (msg != nullptr) {
2367 st->print(": %s", java_lang_String::as_utf8_string(msg));
2368 }
2369 }
2370
2371 // After this many redefines, the stack trace is unreliable.
2372 const int MAX_VERSION = USHRT_MAX;
2373
2374 static inline bool version_matches(Method* method, int version) {
2375 assert(version < MAX_VERSION, "version is too big");
2376 return method != nullptr && (method->constants()->version() == version);
2377 }
2378
2379 // This class provides a simple wrapper over the internal structure of
2380 // exception backtrace to insulate users of the backtrace from needing
2381 // to know what it looks like.
2382 // The code of this class is not GC safe. Allocations can only happen
2383 // in expand().
2384 class BacktraceBuilder: public StackObj {
2385 friend class BacktraceIterator;
2386 private:
2387 refArrayHandle _backtrace;
2388 refArrayOop _head;
2389 typeArrayOop _methods;
2390 typeArrayOop _bcis;
2391 refArrayOop _mirrors;
2392 typeArrayOop _names; // Needed to insulate method name against redefinition.
2393 // True if the top frame of the backtrace is omitted because it shall be hidden.
2394 bool _has_hidden_top_frame;
2395 int _index;
2396 NoSafepointVerifier _nsv;
2397
2398 enum {
2399 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2400 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2401 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2402 trace_names_offset = java_lang_Throwable::trace_names_offset,
2403 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2404 trace_next_offset = java_lang_Throwable::trace_next_offset,
2405 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2406 trace_size = java_lang_Throwable::trace_size,
2407 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2408 };
2409
2410 // get info out of chunks
2411 static typeArrayOop get_methods(refArrayHandle chunk) {
2412 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2413 assert(methods != nullptr, "method array should be initialized in backtrace");
2414 return methods;
2415 }
2416 static typeArrayOop get_bcis(refArrayHandle chunk) {
2417 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2418 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2419 return bcis;
2420 }
2421 static refArrayOop get_mirrors(refArrayHandle chunk) {
2422 refArrayOop mirrors = refArrayOop(chunk->obj_at(trace_mirrors_offset));
2423 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2424 return mirrors;
2425 }
2426 static typeArrayOop get_names(refArrayHandle chunk) {
2427 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2428 assert(names != nullptr, "names array should be initialized in backtrace");
2429 return names;
2430 }
2431 static bool has_hidden_top_frame(refArrayHandle chunk) {
2432 oop hidden = chunk->obj_at(trace_hidden_offset);
2433 return hidden != nullptr;
2434 }
2435
2436 public:
2437
2438 // constructor for new backtrace
2439 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2440 expand(CHECK);
2441 _backtrace = refArrayHandle(THREAD, _head);
2442 _index = 0;
2443 }
2444
2445 BacktraceBuilder(Thread* thread, refArrayHandle backtrace) {
2446 _methods = get_methods(backtrace);
2447 _bcis = get_bcis(backtrace);
2448 _mirrors = get_mirrors(backtrace);
2449 _names = get_names(backtrace);
2450 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2451 assert(_methods->length() == _bcis->length() &&
2452 _methods->length() == _mirrors->length() &&
2453 _mirrors->length() == _names->length(),
2454 "method and source information arrays should match");
2455
2456 // head is the preallocated backtrace
2457 _head = backtrace();
2458 _backtrace = refArrayHandle(thread, _head);
2459 _index = 0;
2460 }
2461
2462 void expand(TRAPS) {
2463 refArrayHandle old_head(THREAD, _head);
2464 PauseNoSafepointVerifier pnsv(&_nsv);
2465
2466 refArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2467 refArrayHandle new_head(THREAD, head);
2468
2469 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2470 typeArrayHandle new_methods(THREAD, methods);
2471
2472 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2473 typeArrayHandle new_bcis(THREAD, bcis);
2474
2475 refArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2476 refArrayHandle new_mirrors(THREAD, mirrors);
2477
2478 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2479 typeArrayHandle new_names(THREAD, names);
2480
2481 if (!old_head.is_null()) {
2482 old_head->obj_at_put(trace_next_offset, new_head());
2483 }
2484 new_head->obj_at_put(trace_methods_offset, new_methods());
2485 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2486 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2487 new_head->obj_at_put(trace_names_offset, new_names());
2488 new_head->obj_at_put(trace_hidden_offset, nullptr);
2489
2490 _head = new_head();
2491 _methods = new_methods();
2492 _bcis = new_bcis();
2493 _mirrors = new_mirrors();
2494 _names = new_names();
2495 _index = 0;
2496 }
2497
2498 refArrayOop backtrace() {
2499 return _backtrace();
2500 }
2501
2502 inline void push(Method* method, int bci, TRAPS) {
2503 // Smear the -1 bci to 0 since the array only holds unsigned
2504 // shorts. The later line number lookup would just smear the -1
2505 // to a 0 even if it could be recorded.
2506 if (bci == SynchronizationEntryBCI) bci = 0;
2507
2508 if (_index >= trace_chunk_size) {
2509 methodHandle mhandle(THREAD, method);
2510 expand(CHECK);
2511 method = mhandle();
2512 }
2513
2514 _methods->ushort_at_put(_index, method->orig_method_idnum());
2515 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2516
2517 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2518 // klass owning the symbols alive so their refcounts aren't decremented.
2519 Symbol* name = method->name();
2520 _names->symbol_at_put(_index, name);
2521
2522 // We need to save the mirrors in the backtrace to keep the class
2523 // from being unloaded while we still have this stack trace.
2524 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2525 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2526
2527 _index++;
2528 }
2529
2530 void set_has_hidden_top_frame() {
2531 if (!_has_hidden_top_frame) {
2532 // It would be nice to add java/lang/Boolean::TRUE here
2533 // to indicate that this backtrace has a hidden top frame.
2534 // But this code is used before TRUE is allocated.
2535 // Therefore let's just use an arbitrary legal oop
2536 // available right here. _methods is a short[].
2537 assert(_methods != nullptr, "we need a legal oop");
2538 _has_hidden_top_frame = true;
2539 _head->obj_at_put(trace_hidden_offset, _methods);
2540 }
2541 }
2542 };
2543
2544 struct BacktraceElement : public StackObj {
2545 int _method_id;
2546 int _bci;
2547 int _version;
2548 Symbol* _name;
2549 Handle _mirror;
2550 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2551 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2552 };
2553
2554 class BacktraceIterator : public StackObj {
2555 int _index;
2556 refArrayHandle _result;
2557 refArrayHandle _mirrors;
2558 typeArrayHandle _methods;
2559 typeArrayHandle _bcis;
2560 typeArrayHandle _names;
2561
2562 void init(refArrayHandle result, Thread* thread) {
2563 // Get method id, bci, version and mirror from chunk
2564 _result = result;
2565 if (_result.not_null()) {
2566 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2567 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2568 _mirrors = refArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2569 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2570 _index = 0;
2571 }
2572 }
2573 public:
2574 BacktraceIterator(refArrayHandle result, Thread* thread) {
2575 init(result, thread);
2576 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2577 }
2578
2579 BacktraceElement next(Thread* thread) {
2580 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2581 _methods->ushort_at(_index),
2582 Backtrace::version_at(_bcis->int_at(_index)),
2583 Backtrace::bci_at(_bcis->int_at(_index)),
2584 _names->symbol_at(_index));
2585 _index++;
2586
2587 if (_index >= java_lang_Throwable::trace_chunk_size) {
2588 int next_offset = java_lang_Throwable::trace_next_offset;
2589 // Get next chunk
2590 refArrayHandle result (thread, refArrayOop(_result->obj_at(next_offset)));
2591 init(result, thread);
2592 }
2593 return e;
2594 }
2595
2596 bool repeat() {
2597 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2598 }
2599 };
2600
2601
2602 // Print stack trace element to the specified output stream.
2603 // The output is formatted into a stringStream and written to the outputStream in one step.
2604 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2605 int version, int bci, Symbol* name) {
2606 ResourceMark rm;
2607 stringStream ss;
2608
2609 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2610 const char* klass_name = holder->external_name();
2611 char* method_name = name->as_C_string();
2612 ss.print("\tat %s.%s(", klass_name, method_name);
2613
2614 // Print module information
2615 ModuleEntry* module = holder->module();
2616 if (module->is_named()) {
2617 char* module_name = module->name()->as_C_string();
2618 if (module->version() != nullptr) {
2619 char* module_version = module->version()->as_C_string();
2620 ss.print("%s@%s/", module_name, module_version);
2621 } else {
2622 ss.print("%s/", module_name);
2623 }
2624 }
2625
2626 char* source_file_name = nullptr;
2627 Symbol* source = Backtrace::get_source_file_name(holder, version);
2628 if (source != nullptr) {
2629 source_file_name = source->as_C_string();
2630 }
2631
2632 // The method can be null if the requested class version is gone
2633 Method* method = holder->method_with_orig_idnum(method_id, version);
2634 if (!version_matches(method, version)) {
2635 ss.print("Redefined)");
2636 } else {
2637 int line_number = Backtrace::get_line_number(method, bci);
2638 if (line_number == -2) {
2639 ss.print("Native Method)");
2640 } else {
2641 if (source_file_name != nullptr && (line_number != -1)) {
2642 // Sourcename and linenumber
2643 ss.print("%s:%d)", source_file_name, line_number);
2644 } else if (source_file_name != nullptr) {
2645 // Just sourcename
2646 ss.print("%s)", source_file_name);
2647 } else {
2648 // Neither sourcename nor linenumber
2649 ss.print("Unknown Source)");
2650 }
2651 nmethod* nm = method->code();
2652 if (WizardMode && nm != nullptr) {
2653 ss.print("(nmethod " INTPTR_FORMAT ")", p2i(nm));
2654 }
2655 }
2656 }
2657
2658 ss.cr();
2659 st->print_raw(ss.freeze(), ss.size());
2660 }
2661
2662 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2663 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2664 int method_id = method->orig_method_idnum();
2665 int version = method->constants()->version();
2666 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2667 }
2668
2669 /**
2670 * Print the throwable message and its stack trace plus all causes by walking the
2671 * cause chain. The output looks the same as of Throwable.printStackTrace().
2672 */
2673 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2674 // First, print the message.
2675 print(throwable(), st);
2676 st->cr();
2677
2678 // Now print the stack trace.
2679 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2680 while (throwable.not_null()) {
2681 refArrayHandle result (THREAD, backtrace(throwable()));
2682 if (result.is_null()) {
2683 st->print_raw_cr("\t<<no stack trace available>>");
2684 return;
2685 }
2686 BacktraceIterator iter(result, THREAD);
2687
2688 while (iter.repeat()) {
2689 BacktraceElement bte = iter.next(THREAD);
2690 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2691 }
2692 if (THREAD->can_call_java()) {
2693 // Call getCause() which doesn't necessarily return the _cause field.
2694 ExceptionMark em(THREAD);
2695 JavaValue cause(T_OBJECT);
2696 JavaCalls::call_virtual(&cause,
2697 throwable,
2698 throwable->klass(),
2699 vmSymbols::getCause_name(),
2700 vmSymbols::void_throwable_signature(),
2701 THREAD);
2702 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2703 if (HAS_PENDING_EXCEPTION) {
2704 CLEAR_PENDING_EXCEPTION;
2705 throwable = Handle();
2706 } else {
2707 throwable = Handle(THREAD, cause.get_oop());
2708 if (throwable.not_null()) {
2709 st->print("Caused by: ");
2710 print(throwable(), st);
2711 st->cr();
2712 }
2713 }
2714 } else {
2715 st->print_raw_cr("<<cannot call Java to get cause>>");
2716 return;
2717 }
2718 }
2719 }
2720
2721 /**
2722 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2723 */
2724 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2725 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2726 JavaValue result(T_VOID);
2727 JavaCalls::call_virtual(&result,
2728 throwable,
2729 vmClasses::Throwable_klass(),
2730 vmSymbols::printStackTrace_name(),
2731 vmSymbols::void_method_signature(),
2732 THREAD);
2733 }
2734
2735 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2736 if (!StackTraceInThrowable) return;
2737 ResourceMark rm(THREAD);
2738
2739 // Start out by clearing the backtrace for this object, in case the VM
2740 // runs out of memory while allocating the stack trace
2741 set_backtrace(throwable(), nullptr);
2742 // Clear lazily constructed Java level stacktrace if refilling occurs
2743 // This is unnecessary in 1.7+ but harmless
2744 clear_stacktrace(throwable());
2745
2746 int max_depth = MaxJavaStackTraceDepth;
2747 JavaThread* thread = THREAD;
2748
2749 BacktraceBuilder bt(CHECK);
2750
2751 // If there is no Java frame just return the method that was being called
2752 // with bci 0
2753 if (!thread->has_last_Java_frame()) {
2754 if (max_depth >= 1 && method() != nullptr) {
2755 bt.push(method(), 0, CHECK);
2756 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2757 set_depth(throwable(), 1);
2758 set_backtrace(throwable(), bt.backtrace());
2759 }
2760 return;
2761 }
2762
2763 // Instead of using vframe directly, this version of fill_in_stack_trace
2764 // basically handles everything by hand. This significantly improved the
2765 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2766 // See bug 6333838 for more details.
2767 // The "ASSERT" here is to verify this method generates the exactly same stack
2768 // trace as utilizing vframe.
2769 #ifdef ASSERT
2770 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2771 #endif
2772 int total_count = 0;
2773 RegisterMap map(thread,
2774 RegisterMap::UpdateMap::skip,
2775 RegisterMap::ProcessFrames::skip,
2776 RegisterMap::WalkContinuation::include);
2777 int decode_offset = 0;
2778 nmethod* nm = nullptr;
2779 bool skip_fillInStackTrace_check = false;
2780 bool skip_throwableInit_check = false;
2781 bool skip_hidden = !ShowHiddenFrames;
2782 bool show_carrier = ShowCarrierFrames;
2783 ContinuationEntry* cont_entry = thread->last_continuation();
2784 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2785 Method* method = nullptr;
2786 int bci = 0;
2787
2788 // Compiled java method case.
2789 if (decode_offset != 0) {
2790 DebugInfoReadStream stream(nm, decode_offset);
2791 decode_offset = stream.read_int();
2792 method = (Method*)nm->metadata_at(stream.read_int());
2793 bci = stream.read_bci();
2794 } else {
2795 if (fr.is_first_frame()) break;
2796
2797 if (Continuation::is_continuation_enterSpecial(fr)) {
2798 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2799 if (!show_carrier && cont_entry->is_virtual_thread()) {
2800 break;
2801 }
2802 cont_entry = cont_entry->parent();
2803 }
2804
2805 address pc = fr.pc();
2806 if (fr.is_interpreted_frame()) {
2807 address bcp;
2808 if (!map.in_cont()) {
2809 bcp = fr.interpreter_frame_bcp();
2810 method = fr.interpreter_frame_method();
2811 } else {
2812 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2813 method = map.stack_chunk()->interpreter_frame_method(fr);
2814 }
2815 bci = method->bci_from(bcp);
2816 fr = fr.sender(&map);
2817 } else {
2818 CodeBlob* cb = fr.cb();
2819 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2820 // but non nmethod
2821 fr = fr.sender(&map);
2822 if (cb == nullptr || !cb->is_nmethod()) {
2823 continue;
2824 }
2825 nm = cb->as_nmethod();
2826 assert(nm->method() != nullptr, "must be");
2827 if (nm->method()->is_native()) {
2828 method = nm->method();
2829 bci = 0;
2830 } else {
2831 PcDesc* pd = nm->pc_desc_at(pc);
2832 decode_offset = pd->scope_decode_offset();
2833 // if decode_offset is not equal to 0, it will execute the
2834 // "compiled java method case" at the beginning of the loop.
2835 continue;
2836 }
2837 }
2838 }
2839 #ifdef ASSERT
2840 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2841 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2842 st.next();
2843 }
2844 #endif
2845
2846 // the format of the stacktrace will be:
2847 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2848 // - 0 or more <init> methods for the exception class (skipped)
2849 // - rest of the stack
2850
2851 if (!skip_fillInStackTrace_check) {
2852 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2853 throwable->is_a(method->method_holder())) {
2854 continue;
2855 }
2856 else {
2857 skip_fillInStackTrace_check = true; // gone past them all
2858 }
2859 }
2860 if (!skip_throwableInit_check) {
2861 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2862
2863 // skip <init> methods of the exception class and superclasses
2864 // This is similar to classic VM.
2865 if (method->is_object_constructor() &&
2866 throwable->is_a(method->method_holder())) {
2867 continue;
2868 } else {
2869 // there are none or we've seen them all - either way stop checking
2870 skip_throwableInit_check = true;
2871 }
2872 }
2873 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2874 if (skip_hidden) {
2875 if (total_count == 0) {
2876 // The top frame will be hidden from the stack trace.
2877 bt.set_has_hidden_top_frame();
2878 }
2879 continue;
2880 }
2881 }
2882
2883 bt.push(method, bci, CHECK);
2884 total_count++;
2885 }
2886
2887 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2888
2889 // Put completed stack trace into throwable object
2890 set_backtrace(throwable(), bt.backtrace());
2891 set_depth(throwable(), total_count);
2892 }
2893
2894 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2895 // No-op if stack trace is disabled
2896 if (!StackTraceInThrowable) {
2897 return;
2898 }
2899
2900 // Disable stack traces for some preallocated out of memory errors
2901 if (!Universe::should_fill_in_stack_trace(throwable)) {
2902 return;
2903 }
2904
2905 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2906 PreserveExceptionMark pm(THREAD);
2907
2908 fill_in_stack_trace(throwable, method, THREAD);
2909 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2910 // original exception via the PreserveExceptionMark destructor.
2911 CLEAR_PENDING_EXCEPTION;
2912 }
2913
2914 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2915 // Allocate stack trace - backtrace is created but not filled in
2916
2917 // No-op if stack trace is disabled
2918 if (!StackTraceInThrowable) return;
2919 BacktraceBuilder bt(CHECK); // creates a backtrace
2920 set_backtrace(throwable(), bt.backtrace());
2921 }
2922
2923
2924 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2925 // Fill in stack trace into preallocated backtrace (no GC)
2926
2927 // No-op if stack trace is disabled
2928 if (!StackTraceInThrowable) return;
2929
2930 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2931
2932 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2933
2934 refArrayHandle backtrace(THREAD, java_lang_Throwable::backtrace(throwable()));
2935 assert(backtrace.not_null(), "backtrace should have been preallocated");
2936
2937 ResourceMark rm(THREAD);
2938 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2939
2940 BacktraceBuilder bt(THREAD, backtrace);
2941
2942 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2943 // methods as preallocated errors aren't created by "java" code.
2944
2945 // fill in as much stack trace as possible
2946 int chunk_count = 0;
2947 for (;!st.at_end(); st.next()) {
2948 bt.push(st.method(), st.bci(), CHECK);
2949 chunk_count++;
2950
2951 // Bail-out for deep stacks
2952 if (chunk_count >= trace_chunk_size) break;
2953 }
2954 set_depth(throwable(), chunk_count);
2955 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2956
2957 // We support the Throwable immutability protocol defined for Java 7.
2958 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2959 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2960 }
2961
2962 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2963 refArrayHandle stack_trace_array_h, TRAPS) {
2964
2965 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2966 THROW(vmSymbols::java_lang_NullPointerException());
2967 }
2968
2969 assert(stack_trace_array_h->is_refArray(), "Stack trace array should be an array of StackTraceElement");
2970
2971 if (stack_trace_array_h->length() != depth) {
2972 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2973 }
2974
2975 refArrayHandle result(THREAD, refArrayOop(backtrace()));
2976 BacktraceIterator iter(result, THREAD);
2977
2978 int index = 0;
2979 while (iter.repeat()) {
2980 BacktraceElement bte = iter.next(THREAD);
2981
2982 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2983
2984 if (stack_trace_element.is_null()) {
2985 THROW(vmSymbols::java_lang_NullPointerException());
2986 }
2987
2988 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2989 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2990
2991 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2992 method,
2993 bte._version,
2994 bte._bci,
2995 bte._name,
2996 CHECK);
2997 }
2998 }
2999
3000 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
3001 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
3002 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
3003 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
3004 // symbolic stacktrace of 'throwable'.
3005 assert(throwable.not_null(), "shouldn't be");
3006
3007 // Now create the message from the original exception and thread name.
3008 ResourceMark rm(current);
3009 const char *message = nullptr;
3010 oop detailed_message = java_lang_Throwable::message(throwable());
3011 if (detailed_message != nullptr) {
3012 message = java_lang_String::as_utf8_string(detailed_message);
3013 }
3014 stringStream st;
3015 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
3016 message == nullptr ? "" : ":");
3017 if (message == nullptr) {
3018 st.print("[in thread \"%s\"]", current->name());
3019 } else {
3020 st.print("%s [in thread \"%s\"]", message, current->name());
3021 }
3022
3023 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
3024 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
3025 // If new_exception returns a different exception while creating the exception,
3026 // abandon the attempt to save the initialization error and return null.
3027 if (init_error->klass()->name() != exception_name) {
3028 log_info(class, init)("Exception %s thrown while saving initialization exception",
3029 init_error->klass()->external_name());
3030 return Handle();
3031 }
3032
3033 // Call to java to fill in the stack trace and clear declaringClassObject to
3034 // not keep classes alive in the stack trace.
3035 // call this: public StackTraceElement[] getStackTrace()
3036 JavaValue result(T_ARRAY);
3037 JavaCalls::call_virtual(&result, throwable,
3038 vmClasses::Throwable_klass(),
3039 vmSymbols::getStackTrace_name(),
3040 vmSymbols::getStackTrace_signature(),
3041 current);
3042 if (!current->has_pending_exception()){
3043 Handle stack_trace(current, result.get_oop());
3044 assert(stack_trace->is_objArray(), "Should be an array");
3045 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3046 // Clear backtrace because the stacktrace should be used instead.
3047 set_backtrace(init_error(), nullptr);
3048 } else {
3049 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3050 init_error->klass()->external_name());
3051 current->clear_pending_exception();
3052 }
3053
3054 return init_error;
3055 }
3056
3057 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3058 JavaThread* current = JavaThread::current();
3059 refArrayHandle result(current, backtrace(throwable));
3060 BacktraceIterator iter(result, current);
3061 // No backtrace available.
3062 if (!iter.repeat()) return false;
3063
3064 // If the exception happened in a frame that has been hidden, i.e.,
3065 // omitted from the back trace, we can not compute the message.
3066 oop hidden = backtrace(throwable)->obj_at(trace_hidden_offset);
3067 if (hidden != nullptr) {
3068 return false;
3069 }
3070
3071 // Get first backtrace element.
3072 BacktraceElement bte = iter.next(current);
3073
3074 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3075 assert(holder != nullptr, "first element should be non-null");
3076 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3077
3078 // Original version is no longer available.
3079 if (m == nullptr || !version_matches(m, bte._version)) {
3080 return false;
3081 }
3082
3083 *method = m;
3084 *bci = bte._bci;
3085 return true;
3086 }
3087
3088 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
3089 // Allocate java.lang.StackTraceElement instance
3090 InstanceKlass* k = vmClasses::StackTraceElement_klass();
3091 assert(k != nullptr, "must be loaded in 1.4+");
3092 if (k->should_be_initialized()) {
3093 k->initialize(CHECK_NULL);
3094 }
3095
3096 Handle element = k->allocate_instance_handle(CHECK_NULL);
3097
3098 int version = method->constants()->version();
3099 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
3100 return element();
3101 }
3102
3103 void java_lang_StackTraceElement::fill_in(Handle element,
3104 InstanceKlass* holder, const methodHandle& method,
3105 int version, int bci, Symbol* name, TRAPS) {
3106 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
3107
3108 ResourceMark rm(THREAD);
3109 HandleMark hm(THREAD);
3110
3111 // Fill in class name
3112 Handle java_class(THREAD, holder->java_mirror());
3113 oop classname = java_lang_Class::name(java_class, CHECK);
3114 java_lang_StackTraceElement::set_declaringClass(element(), classname);
3115 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
3116
3117 oop loader = holder->class_loader();
3118 if (loader != nullptr) {
3119 oop loader_name = java_lang_ClassLoader::name(loader);
3120 if (loader_name != nullptr)
3121 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
3122 }
3123
3124 // Fill in method name
3125 oop methodname = StringTable::intern(name, CHECK);
3126 java_lang_StackTraceElement::set_methodName(element(), methodname);
3127
3128 // Fill in module name and version
3129 ModuleEntry* module = holder->module();
3130 if (module->is_named()) {
3131 oop module_name = StringTable::intern(module->name(), CHECK);
3132 java_lang_StackTraceElement::set_moduleName(element(), module_name);
3133 oop module_version;
3134 if (module->version() != nullptr) {
3135 module_version = StringTable::intern(module->version(), CHECK);
3136 } else {
3137 module_version = nullptr;
3138 }
3139 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
3140 }
3141
3142 if (method() == nullptr || !version_matches(method(), version)) {
3143 // The method was redefined, accurate line number information isn't available
3144 java_lang_StackTraceElement::set_fileName(element(), nullptr);
3145 java_lang_StackTraceElement::set_lineNumber(element(), -1);
3146 } else {
3147 Symbol* source;
3148 oop source_file;
3149 int line_number;
3150 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
3151
3152 java_lang_StackTraceElement::set_fileName(element(), source_file);
3153 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
3154 }
3155 }
3156
3157 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
3158 InstanceKlass* holder,
3159 int version,
3160 const methodHandle& method,
3161 int bci,
3162 Symbol*& source,
3163 oop& source_file,
3164 int& line_number, TRAPS) {
3165 // Fill in source file name and line number.
3166 source = Backtrace::get_source_file_name(holder, version);
3167 source_file = java_lang_Class::source_file(java_class());
3168 if (source != nullptr) {
3169 // Class was not redefined. We can trust its cache if set,
3170 // else we have to initialize it.
3171 if (source_file == nullptr) {
3172 source_file = StringTable::intern(source, CHECK);
3173 java_lang_Class::set_source_file(java_class(), source_file);
3174 }
3175 } else {
3176 // Class was redefined. Dump the cache if it was set.
3177 if (source_file != nullptr) {
3178 source_file = nullptr;
3179 java_lang_Class::set_source_file(java_class(), source_file);
3180 }
3181 }
3182 line_number = Backtrace::get_line_number(method(), bci);
3183 }
3184
3185 #if INCLUDE_JVMCI
3186 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3187 Symbol*& filename, int& line_number, TRAPS) {
3188 ResourceMark rm(THREAD);
3189 HandleMark hm(THREAD);
3190
3191 filename = nullptr;
3192 line_number = -1;
3193
3194 oop source_file;
3195 int version = method->constants()->version();
3196 InstanceKlass* holder = method->method_holder();
3197 Handle java_class(THREAD, holder->java_mirror());
3198 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3199 }
3200 #endif // INCLUDE_JVMCI
3201
3202 // java_lang_ClassFrameInfo
3203
3204 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3205 int java_lang_ClassFrameInfo::_flags_offset;
3206
3207 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3208 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3209 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3210
3211 void java_lang_ClassFrameInfo::compute_offsets() {
3212 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3213 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3214 }
3215
3216 #if INCLUDE_CDS
3217 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3218 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3219 }
3220 #endif
3221
3222 static int get_flags(const methodHandle& m) {
3223 int flags = m->access_flags().as_method_flags();
3224 if (m->is_object_constructor()) {
3225 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3226 } else {
3227 // Note: Static initializers can be here. Record them as plain methods.
3228 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3229 }
3230 if (m->caller_sensitive()) {
3231 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3232 }
3233 if (m->is_hidden()) {
3234 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3235 }
3236 assert((flags & 0xFF000000) == 0, "unexpected flags");
3237 return flags;
3238 }
3239
3240 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3241 return obj->obj_field(_classOrMemberName_offset);
3242 }
3243
3244 int java_lang_ClassFrameInfo::flags(oop obj) {
3245 return obj->int_field(_flags_offset);
3246 }
3247
3248 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3249 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3250 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3251 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3252 stackFrame->int_field_put(_flags_offset, flags);
3253 }
3254
3255 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3256 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3257 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3258 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3259 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3260 stackFrame->int_field_put(_flags_offset, flags);
3261 }
3262
3263
3264 // java_lang_StackFrameInfo
3265
3266 int java_lang_StackFrameInfo::_type_offset;
3267 int java_lang_StackFrameInfo::_name_offset;
3268 int java_lang_StackFrameInfo::_bci_offset;
3269 int java_lang_StackFrameInfo::_version_offset;
3270 int java_lang_StackFrameInfo::_contScope_offset;
3271
3272 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3273 macro(_type_offset, k, "type", object_signature, false); \
3274 macro(_name_offset, k, "name", string_signature, false); \
3275 macro(_bci_offset, k, "bci", int_signature, false); \
3276 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3277
3278 void java_lang_StackFrameInfo::compute_offsets() {
3279 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3280 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3281 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3282 }
3283
3284 #if INCLUDE_CDS
3285 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3286 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3287 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3288 }
3289 #endif
3290
3291 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3292 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3293 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3294 return method;
3295 }
3296
3297 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3298 // set Method* or mid/cpref
3299 HandleMark hm(THREAD);
3300 Handle cont_h(THREAD, cont);
3301 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3302
3303 // set bci
3304 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3305 // method may be redefined; store the version
3306 int version = method->constants()->version();
3307 assert((jushort)version == version, "version should be short");
3308 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3309
3310 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3311 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3312 }
3313
3314 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3315 ResourceMark rm(THREAD);
3316 HandleMark hm(THREAD);
3317
3318 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3319 InstanceKlass* holder = method->method_holder();
3320 short version = stackFrame->short_field(_version_offset);
3321 int bci = stackFrame->int_field(_bci_offset);
3322 Symbol* name = method->name();
3323 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3324 }
3325
3326 oop java_lang_StackFrameInfo::type(oop obj) {
3327 return obj->obj_field(_type_offset);
3328 }
3329
3330 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3331 obj->obj_field_put(_type_offset, value);
3332 }
3333
3334 oop java_lang_StackFrameInfo::name(oop obj) {
3335 return obj->obj_field(_name_offset);
3336 }
3337
3338 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3339 obj->obj_field_put(_name_offset, value);
3340 }
3341
3342 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3343 obj->short_field_put(_version_offset, value);
3344 }
3345
3346 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3347 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3348 obj->int_field_put(_bci_offset, value);
3349 }
3350
3351 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3352 obj->obj_field_put(_contScope_offset, value);
3353 }
3354
3355 int java_lang_LiveStackFrameInfo::_monitors_offset;
3356 int java_lang_LiveStackFrameInfo::_locals_offset;
3357 int java_lang_LiveStackFrameInfo::_operands_offset;
3358 int java_lang_LiveStackFrameInfo::_mode_offset;
3359
3360 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3361 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3362 macro(_locals_offset, k, "locals", object_array_signature, false); \
3363 macro(_operands_offset, k, "operands", object_array_signature, false); \
3364 macro(_mode_offset, k, "mode", int_signature, false)
3365
3366 void java_lang_LiveStackFrameInfo::compute_offsets() {
3367 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3368 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3369 }
3370
3371 #if INCLUDE_CDS
3372 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3373 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3374 }
3375 #endif
3376
3377 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3378 obj->obj_field_put(_monitors_offset, value);
3379 }
3380
3381 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3382 obj->obj_field_put(_locals_offset, value);
3383 }
3384
3385 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3386 obj->obj_field_put(_operands_offset, value);
3387 }
3388
3389 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3390 obj->int_field_put(_mode_offset, value);
3391 }
3392
3393
3394 // java_lang_AccessibleObject
3395
3396 int java_lang_reflect_AccessibleObject::_override_offset;
3397
3398 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3399 macro(_override_offset, k, "override", bool_signature, false)
3400
3401 void java_lang_reflect_AccessibleObject::compute_offsets() {
3402 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3403 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3404 }
3405
3406 #if INCLUDE_CDS
3407 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3408 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3409 }
3410 #endif
3411
3412 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3413 return (jboolean) reflect->bool_field(_override_offset);
3414 }
3415
3416 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3417 reflect->bool_field_put(_override_offset, (int) value);
3418 }
3419
3420 // java_lang_reflect_Method
3421
3422 int java_lang_reflect_Method::_clazz_offset;
3423 int java_lang_reflect_Method::_name_offset;
3424 int java_lang_reflect_Method::_returnType_offset;
3425 int java_lang_reflect_Method::_parameterTypes_offset;
3426 int java_lang_reflect_Method::_exceptionTypes_offset;
3427 int java_lang_reflect_Method::_slot_offset;
3428 int java_lang_reflect_Method::_modifiers_offset;
3429 int java_lang_reflect_Method::_signature_offset;
3430 int java_lang_reflect_Method::_annotations_offset;
3431 int java_lang_reflect_Method::_parameter_annotations_offset;
3432 int java_lang_reflect_Method::_annotation_default_offset;
3433
3434 #define METHOD_FIELDS_DO(macro) \
3435 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3436 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3437 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3438 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3439 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3440 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3441 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3442 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3443 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3444 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3445 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3446
3447 void java_lang_reflect_Method::compute_offsets() {
3448 InstanceKlass* k = vmClasses::reflect_Method_klass();
3449 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3450 }
3451
3452 #if INCLUDE_CDS
3453 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3454 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3455 }
3456 #endif
3457
3458 Handle java_lang_reflect_Method::create(TRAPS) {
3459 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3460 InstanceKlass* klass = vmClasses::reflect_Method_klass();
3461 // This class is eagerly initialized during VM initialization, since we keep a reference
3462 // to one of the methods
3463 assert(klass->is_initialized(), "must be initialized");
3464 return klass->allocate_instance_handle(THREAD);
3465 }
3466
3467 oop java_lang_reflect_Method::clazz(oop reflect) {
3468 return reflect->obj_field(_clazz_offset);
3469 }
3470
3471 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3472 reflect->obj_field_put(_clazz_offset, value);
3473 }
3474
3475 int java_lang_reflect_Method::slot(oop reflect) {
3476 return reflect->int_field(_slot_offset);
3477 }
3478
3479 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3480 reflect->int_field_put(_slot_offset, value);
3481 }
3482
3483 void java_lang_reflect_Method::set_name(oop method, oop value) {
3484 method->obj_field_put(_name_offset, value);
3485 }
3486
3487 oop java_lang_reflect_Method::return_type(oop method) {
3488 return method->obj_field(_returnType_offset);
3489 }
3490
3491 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3492 method->obj_field_put(_returnType_offset, value);
3493 }
3494
3495 oop java_lang_reflect_Method::parameter_types(oop method) {
3496 return method->obj_field(_parameterTypes_offset);
3497 }
3498
3499 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3500 method->obj_field_put(_parameterTypes_offset, value);
3501 }
3502
3503 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3504 method->obj_field_put(_exceptionTypes_offset, value);
3505 }
3506
3507 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3508 method->int_field_put(_modifiers_offset, value);
3509 }
3510
3511 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3512 method->obj_field_put(_signature_offset, value);
3513 }
3514
3515 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3516 method->obj_field_put(_annotations_offset, value);
3517 }
3518
3519 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3520 method->obj_field_put(_parameter_annotations_offset, value);
3521 }
3522
3523 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3524 method->obj_field_put(_annotation_default_offset, value);
3525 }
3526
3527 int java_lang_reflect_Constructor::_clazz_offset;
3528 int java_lang_reflect_Constructor::_parameterTypes_offset;
3529 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3530 int java_lang_reflect_Constructor::_slot_offset;
3531 int java_lang_reflect_Constructor::_modifiers_offset;
3532 int java_lang_reflect_Constructor::_signature_offset;
3533 int java_lang_reflect_Constructor::_annotations_offset;
3534 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3535
3536 #define CONSTRUCTOR_FIELDS_DO(macro) \
3537 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3538 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3539 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3540 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3541 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3542 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3543 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3544 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3545
3546 void java_lang_reflect_Constructor::compute_offsets() {
3547 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3548 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3549 }
3550
3551 #if INCLUDE_CDS
3552 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3553 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3554 }
3555 #endif
3556
3557 Handle java_lang_reflect_Constructor::create(TRAPS) {
3558 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3559 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3560 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3561 InstanceKlass* ik = InstanceKlass::cast(k);
3562 // Ensure it is initialized
3563 ik->initialize(CHECK_NH);
3564 return ik->allocate_instance_handle(THREAD);
3565 }
3566
3567 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3568 return reflect->obj_field(_clazz_offset);
3569 }
3570
3571 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3572 reflect->obj_field_put(_clazz_offset, value);
3573 }
3574
3575 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3576 return constructor->obj_field(_parameterTypes_offset);
3577 }
3578
3579 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3580 constructor->obj_field_put(_parameterTypes_offset, value);
3581 }
3582
3583 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3584 constructor->obj_field_put(_exceptionTypes_offset, value);
3585 }
3586
3587 int java_lang_reflect_Constructor::slot(oop reflect) {
3588 return reflect->int_field(_slot_offset);
3589 }
3590
3591 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3592 reflect->int_field_put(_slot_offset, value);
3593 }
3594
3595 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3596 constructor->int_field_put(_modifiers_offset, value);
3597 }
3598
3599 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3600 constructor->obj_field_put(_signature_offset, value);
3601 }
3602
3603 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3604 constructor->obj_field_put(_annotations_offset, value);
3605 }
3606
3607 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3608 method->obj_field_put(_parameter_annotations_offset, value);
3609 }
3610
3611 int java_lang_reflect_Field::_clazz_offset;
3612 int java_lang_reflect_Field::_name_offset;
3613 int java_lang_reflect_Field::_type_offset;
3614 int java_lang_reflect_Field::_slot_offset;
3615 int java_lang_reflect_Field::_modifiers_offset;
3616 int java_lang_reflect_Field::_flags_offset;
3617 int java_lang_reflect_Field::_signature_offset;
3618 int java_lang_reflect_Field::_annotations_offset;
3619
3620 #define FIELD_FIELDS_DO(macro) \
3621 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3622 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3623 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3624 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3625 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3626 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3627 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3628 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3629
3630 void java_lang_reflect_Field::compute_offsets() {
3631 InstanceKlass* k = vmClasses::reflect_Field_klass();
3632 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3633 }
3634
3635 #if INCLUDE_CDS
3636 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3637 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3638 }
3639 #endif
3640
3641 Handle java_lang_reflect_Field::create(TRAPS) {
3642 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3643 Symbol* name = vmSymbols::java_lang_reflect_Field();
3644 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3645 InstanceKlass* ik = InstanceKlass::cast(k);
3646 // Ensure it is initialized
3647 ik->initialize(CHECK_NH);
3648 return ik->allocate_instance_handle(THREAD);
3649 }
3650
3651 oop java_lang_reflect_Field::clazz(oop reflect) {
3652 return reflect->obj_field(_clazz_offset);
3653 }
3654
3655 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3656 reflect->obj_field_put(_clazz_offset, value);
3657 }
3658
3659 oop java_lang_reflect_Field::name(oop field) {
3660 return field->obj_field(_name_offset);
3661 }
3662
3663 void java_lang_reflect_Field::set_name(oop field, oop value) {
3664 field->obj_field_put(_name_offset, value);
3665 }
3666
3667 oop java_lang_reflect_Field::type(oop field) {
3668 return field->obj_field(_type_offset);
3669 }
3670
3671 void java_lang_reflect_Field::set_type(oop field, oop value) {
3672 field->obj_field_put(_type_offset, value);
3673 }
3674
3675 int java_lang_reflect_Field::slot(oop reflect) {
3676 return reflect->int_field(_slot_offset);
3677 }
3678
3679 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3680 reflect->int_field_put(_slot_offset, value);
3681 }
3682
3683 int java_lang_reflect_Field::modifiers(oop field) {
3684 return field->int_field(_modifiers_offset);
3685 }
3686
3687 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3688 field->int_field_put(_modifiers_offset, value);
3689 }
3690
3691 void java_lang_reflect_Field::set_flags(oop field, int value) {
3692 field->int_field_put(_flags_offset, value);
3693 }
3694
3695 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3696 field->obj_field_put(_signature_offset, value);
3697 }
3698
3699 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3700 field->obj_field_put(_annotations_offset, value);
3701 }
3702
3703 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3704 // Allocate java.lang.reflect.RecordComponent instance
3705 HandleMark hm(THREAD);
3706 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3707 assert(ik != nullptr, "must be loaded");
3708 ik->initialize(CHECK_NULL);
3709
3710 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3711
3712 Handle decl_class(THREAD, holder->java_mirror());
3713 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3714
3715 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3716 oop component_name = StringTable::intern(name, CHECK_NULL);
3717 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3718
3719 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3720 Handle component_type_h =
3721 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3722 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3723
3724 Method* accessor_method = nullptr;
3725 {
3726 // Prepend "()" to type to create the full method signature.
3727 ResourceMark rm(THREAD);
3728 int sig_len = type->utf8_length() + 3; // "()" and null char
3729 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3730 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3731 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3732 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3733 }
3734
3735 if (accessor_method != nullptr) {
3736 methodHandle method(THREAD, accessor_method);
3737 oop m = Reflection::new_method(method, false, CHECK_NULL);
3738 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3739 } else {
3740 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3741 }
3742
3743 int sig_index = component->generic_signature_index();
3744 if (sig_index > 0) {
3745 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3746 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3747 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3748 } else {
3749 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3750 }
3751
3752 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3753 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3754
3755 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3756 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3757
3758 return element();
3759 }
3760
3761 int reflect_ConstantPool::_vmholder_offset;
3762
3763 void reflect_ConstantPool::compute_offsets() {
3764 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3765 // The field is injected and called Object vmholder in the jdk.internal.reflect.ConstantPool class.
3766 CONSTANTPOOL_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3767 }
3768
3769 #if INCLUDE_CDS
3770 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3771 CONSTANTPOOL_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3772 }
3773 #endif
3774
3775 int java_lang_reflect_Parameter::_name_offset;
3776 int java_lang_reflect_Parameter::_modifiers_offset;
3777 int java_lang_reflect_Parameter::_index_offset;
3778 int java_lang_reflect_Parameter::_executable_offset;
3779
3780 #define PARAMETER_FIELDS_DO(macro) \
3781 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3782 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3783 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3784 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3785
3786 void java_lang_reflect_Parameter::compute_offsets() {
3787 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3788 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3789 }
3790
3791 #if INCLUDE_CDS
3792 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3793 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3794 }
3795 #endif
3796
3797 Handle java_lang_reflect_Parameter::create(TRAPS) {
3798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3799 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3800 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3801 InstanceKlass* ik = InstanceKlass::cast(k);
3802 // Ensure it is initialized
3803 ik->initialize(CHECK_NH);
3804 return ik->allocate_instance_handle(THREAD);
3805 }
3806
3807 oop java_lang_reflect_Parameter::name(oop param) {
3808 return param->obj_field(_name_offset);
3809 }
3810
3811 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3812 param->obj_field_put(_name_offset, value);
3813 }
3814
3815 int java_lang_reflect_Parameter::modifiers(oop param) {
3816 return param->int_field(_modifiers_offset);
3817 }
3818
3819 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3820 param->int_field_put(_modifiers_offset, value);
3821 }
3822
3823 int java_lang_reflect_Parameter::index(oop param) {
3824 return param->int_field(_index_offset);
3825 }
3826
3827 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3828 param->int_field_put(_index_offset, value);
3829 }
3830
3831 oop java_lang_reflect_Parameter::executable(oop param) {
3832 return param->obj_field(_executable_offset);
3833 }
3834
3835 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3836 param->obj_field_put(_executable_offset, value);
3837 }
3838
3839 // java_lang_Module
3840
3841 int java_lang_Module::_loader_offset;
3842 int java_lang_Module::_name_offset;
3843 int java_lang_Module::_module_entry_offset;
3844
3845 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3847 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3848 vmSymbols::java_lang_module_init_signature(),
3849 loader, module_name, CHECK_NH);
3850 }
3851
3852 #define MODULE_FIELDS_DO(macro) \
3853 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3854 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3855
3856 void java_lang_Module::compute_offsets() {
3857 InstanceKlass* k = vmClasses::Module_klass();
3858 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3859 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3860 }
3861
3862 #if INCLUDE_CDS
3863 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3864 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3865 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3866 }
3867 #endif
3868
3869 oop java_lang_Module::loader(oop module) {
3870 return module->obj_field(_loader_offset);
3871 }
3872
3873 void java_lang_Module::set_loader(oop module, oop value) {
3874 module->obj_field_put(_loader_offset, value);
3875 }
3876
3877 oop java_lang_Module::name(oop module) {
3878 return module->obj_field(_name_offset);
3879 }
3880
3881 void java_lang_Module::set_name(oop module, oop value) {
3882 module->obj_field_put(_name_offset, value);
3883 }
3884
3885 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3886 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3887 assert(module != nullptr, "module can't be null");
3888 assert(oopDesc::is_oop(module), "module must be oop");
3889
3890 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3891 return module_entry;
3892 }
3893
3894 ModuleEntry* java_lang_Module::module_entry(oop module) {
3895 ModuleEntry* module_entry = module_entry_raw(module);
3896 if (module_entry == nullptr) {
3897 // If the inject field containing the ModuleEntry* is null then return the
3898 // class loader's unnamed module.
3899 oop loader = java_lang_Module::loader(module);
3900 Handle h_loader = Handle(Thread::current(), loader);
3901 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3902 return loader_cld->unnamed_module();
3903 }
3904 return module_entry;
3905 }
3906
3907 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3908 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3909 assert(module != nullptr, "module can't be null");
3910 assert(oopDesc::is_oop(module), "module must be oop");
3911 module->address_field_put(_module_entry_offset, (address)module_entry);
3912 }
3913
3914 Handle reflect_ConstantPool::create(TRAPS) {
3915 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3916 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3917 // Ensure it is initialized
3918 k->initialize(CHECK_NH);
3919 return k->allocate_instance_handle(THREAD);
3920 }
3921
3922
3923 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3924 assert(_vmholder_offset != 0, "Uninitialized vmholder");
3925 oop mirror = value->pool_holder()->java_mirror();
3926 // Save the mirror to get back the constant pool.
3927 reflect->obj_field_put(_vmholder_offset, mirror);
3928 }
3929
3930 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3931 assert(_vmholder_offset != 0, "Uninitialized vmholder");
3932 oop mirror = reflect->obj_field(_vmholder_offset);
3933 InstanceKlass* ik = java_lang_Class::as_InstanceKlass(mirror);
3934
3935 // Get the constant pool back from the klass. Since class redefinition
3936 // merges the new constant pool into the old, this is essentially the
3937 // same constant pool as the original. If constant pool merging is
3938 // no longer done in the future, this will have to change to save
3939 // the original.
3940 return ik->constants();
3941 }
3942
3943
3944 // Support for java_lang_ref_Reference
3945
3946 bool java_lang_ref_Reference::_offsets_initialized;
3947
3948 int java_lang_ref_Reference::_referent_offset;
3949 int java_lang_ref_Reference::_queue_offset;
3950 int java_lang_ref_Reference::_next_offset;
3951 int java_lang_ref_Reference::_discovered_offset;
3952
3953 #define REFERENCE_FIELDS_DO(macro) \
3954 macro(_referent_offset, k, "referent", object_signature, false); \
3955 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3956 macro(_next_offset, k, "next", reference_signature, false); \
3957 macro(_discovered_offset, k, "discovered", reference_signature, false);
3958
3959 void java_lang_ref_Reference::compute_offsets() {
3960 if (_offsets_initialized) {
3961 return;
3962 }
3963 _offsets_initialized = true;
3964 InstanceKlass* k = vmClasses::Reference_klass();
3965 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3966 }
3967
3968 #if INCLUDE_CDS
3969 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3970 f->do_bool(&_offsets_initialized);
3971 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3972 }
3973 #endif
3974
3975 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3976 assert(obj != nullptr, "sanity");
3977 if (offset != _referent_offset) {
3978 return false;
3979 }
3980
3981 Klass* k = obj->klass();
3982 if (!k->is_instance_klass()) {
3983 return false;
3984 }
3985
3986 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3987 bool is_reference = ik->reference_type() != REF_NONE;
3988 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3989 return is_reference;
3990 }
3991
3992 int* java_lang_boxing_object::_offsets;
3993
3994 #define BOXING_FIELDS_DO(macro) \
3995 macro(java_lang_boxing_object::_offsets[T_BOOLEAN - T_BOOLEAN], vmClasses::Boolean_klass(), "value", bool_signature, false); \
3996 macro(java_lang_boxing_object::_offsets[T_CHAR - T_BOOLEAN], vmClasses::Character_klass(), "value", char_signature, false); \
3997 macro(java_lang_boxing_object::_offsets[T_FLOAT - T_BOOLEAN], vmClasses::Float_klass(), "value", float_signature, false); \
3998 macro(java_lang_boxing_object::_offsets[T_DOUBLE - T_BOOLEAN], vmClasses::Double_klass(), "value", double_signature, false); \
3999 macro(java_lang_boxing_object::_offsets[T_BYTE - T_BOOLEAN], vmClasses::Byte_klass(), "value", byte_signature, false); \
4000 macro(java_lang_boxing_object::_offsets[T_SHORT - T_BOOLEAN], vmClasses::Short_klass(), "value", short_signature, false); \
4001 macro(java_lang_boxing_object::_offsets[T_INT - T_BOOLEAN], vmClasses::Integer_klass(), "value", int_signature, false); \
4002 macro(java_lang_boxing_object::_offsets[T_LONG - T_BOOLEAN], vmClasses::Long_klass(), "value", long_signature, false);
4003
4004 void java_lang_boxing_object::compute_offsets() {
4005 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4006 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4007 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4008 }
4009
4010 #if INCLUDE_CDS
4011 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
4012 if (f->reading()) {
4013 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4014 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4015 }
4016 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4017 }
4018 #endif
4019
4020 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
4021 Klass* k = vmClasses::box_klass(type);
4022 if (k == nullptr) return nullptr;
4023 InstanceKlass* ik = InstanceKlass::cast(k);
4024 if (!ik->is_initialized()) {
4025 ik->initialize(CHECK_NULL);
4026 }
4027 return ik->allocate_instance(THREAD);
4028 }
4029
4030
4031 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
4032 oop box = initialize_and_allocate(type, CHECK_NULL);
4033 if (box == nullptr) return nullptr;
4034 switch (type) {
4035 case T_BOOLEAN:
4036 box->bool_field_put(value_offset(type), value->z);
4037 break;
4038 case T_CHAR:
4039 box->char_field_put(value_offset(type), value->c);
4040 break;
4041 case T_FLOAT:
4042 box->float_field_put(value_offset(type), value->f);
4043 break;
4044 case T_DOUBLE:
4045 box->double_field_put(value_offset(type), value->d);
4046 break;
4047 case T_BYTE:
4048 box->byte_field_put(value_offset(type), value->b);
4049 break;
4050 case T_SHORT:
4051 box->short_field_put(value_offset(type), value->s);
4052 break;
4053 case T_INT:
4054 box->int_field_put(value_offset(type), value->i);
4055 break;
4056 case T_LONG:
4057 box->long_field_put(value_offset(type), value->j);
4058 break;
4059 default:
4060 return nullptr;
4061 }
4062 return box;
4063 }
4064
4065
4066 BasicType java_lang_boxing_object::basic_type(oop box) {
4067 if (box == nullptr) return T_ILLEGAL;
4068 BasicType type = vmClasses::box_klass_type(box->klass());
4069 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4070 return T_ILLEGAL;
4071 return type;
4072 }
4073
4074
4075 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4076 BasicType type = vmClasses::box_klass_type(box->klass());
4077 switch (type) {
4078 case T_BOOLEAN:
4079 value->z = box->bool_field(value_offset(type));
4080 break;
4081 case T_CHAR:
4082 value->c = box->char_field(value_offset(type));
4083 break;
4084 case T_FLOAT:
4085 value->f = box->float_field(value_offset(type));
4086 break;
4087 case T_DOUBLE:
4088 value->d = box->double_field(value_offset(type));
4089 break;
4090 case T_BYTE:
4091 value->b = box->byte_field(value_offset(type));
4092 break;
4093 case T_SHORT:
4094 value->s = box->short_field(value_offset(type));
4095 break;
4096 case T_INT:
4097 value->i = box->int_field(value_offset(type));
4098 break;
4099 case T_LONG:
4100 value->j = box->long_field(value_offset(type));
4101 break;
4102 default:
4103 return T_ILLEGAL;
4104 } // end switch
4105 return type;
4106 }
4107
4108
4109 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4110 BasicType type = vmClasses::box_klass_type(box->klass());
4111 switch (type) {
4112 case T_BOOLEAN:
4113 box->bool_field_put(value_offset(type), value->z);
4114 break;
4115 case T_CHAR:
4116 box->char_field_put(value_offset(type), value->c);
4117 break;
4118 case T_FLOAT:
4119 box->float_field_put(value_offset(type), value->f);
4120 break;
4121 case T_DOUBLE:
4122 box->double_field_put(value_offset(type), value->d);
4123 break;
4124 case T_BYTE:
4125 box->byte_field_put(value_offset(type), value->b);
4126 break;
4127 case T_SHORT:
4128 box->short_field_put(value_offset(type), value->s);
4129 break;
4130 case T_INT:
4131 box->int_field_put(value_offset(type), value->i);
4132 break;
4133 case T_LONG:
4134 box->long_field_put(value_offset(type), value->j);
4135 break;
4136 default:
4137 return T_ILLEGAL;
4138 } // end switch
4139 return type;
4140 }
4141
4142
4143 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4144 switch (type) {
4145 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4146 case T_CHAR: st->print("%d", value->c); break;
4147 case T_BYTE: st->print("%d", value->b); break;
4148 case T_SHORT: st->print("%d", value->s); break;
4149 case T_INT: st->print("%d", value->i); break;
4150 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4151 case T_FLOAT: st->print("%f", value->f); break;
4152 case T_DOUBLE: st->print("%lf", value->d); break;
4153 default: st->print("type %d?", type); break;
4154 }
4155 }
4156
4157
4158 // Support for java_lang_ref_SoftReference
4159 //
4160
4161 int java_lang_ref_SoftReference::_timestamp_offset;
4162 int java_lang_ref_SoftReference::_static_clock_offset;
4163
4164 #define SOFTREFERENCE_FIELDS_DO(macro) \
4165 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
4166 macro(_static_clock_offset, k, "clock", long_signature, true)
4167
4168 void java_lang_ref_SoftReference::compute_offsets() {
4169 InstanceKlass* k = vmClasses::SoftReference_klass();
4170 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4171 }
4172
4173 #if INCLUDE_CDS
4174 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
4175 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4176 }
4177 #endif
4178
4179 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
4180 return ref->long_field(_timestamp_offset);
4181 }
4182
4183 jlong java_lang_ref_SoftReference::clock() {
4184 InstanceKlass* ik = vmClasses::SoftReference_klass();
4185 oop base = ik->static_field_base_raw();
4186 return base->long_field(_static_clock_offset);
4187 }
4188
4189 void java_lang_ref_SoftReference::set_clock(jlong value) {
4190 InstanceKlass* ik = vmClasses::SoftReference_klass();
4191 oop base = ik->static_field_base_raw();
4192 base->long_field_put(_static_clock_offset, value);
4193 }
4194
4195 // Support for java_lang_invoke_DirectMethodHandle
4196
4197 int java_lang_invoke_DirectMethodHandle::_member_offset;
4198
4199 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4200 oop member_name = nullptr;
4201 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4202 "a DirectMethodHandle oop is expected");
4203 return dmh->obj_field(_member_offset);
4204 }
4205
4206 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4207 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4208
4209 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4210 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4211 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4212 }
4213
4214 #if INCLUDE_CDS
4215 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4216 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4217 }
4218 #endif
4219
4220 // Support for java_lang_invoke_MethodHandle
4221
4222 int java_lang_invoke_MethodHandle::_type_offset;
4223 int java_lang_invoke_MethodHandle::_form_offset;
4224
4225 int java_lang_invoke_MemberName::_clazz_offset;
4226 int java_lang_invoke_MemberName::_name_offset;
4227 int java_lang_invoke_MemberName::_type_offset;
4228 int java_lang_invoke_MemberName::_flags_offset;
4229 int java_lang_invoke_MemberName::_method_offset;
4230 int java_lang_invoke_MemberName::_vmindex_offset;
4231
4232 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4233 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4234
4235 int java_lang_invoke_LambdaForm::_vmentry_offset;
4236
4237 #define METHODHANDLE_FIELDS_DO(macro) \
4238 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4239 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4240
4241 void java_lang_invoke_MethodHandle::compute_offsets() {
4242 InstanceKlass* k = vmClasses::MethodHandle_klass();
4243 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4244 }
4245
4246 #if INCLUDE_CDS
4247 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4248 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4249 }
4250 #endif
4251
4252 #define MEMBERNAME_FIELDS_DO(macro) \
4253 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4254 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4255 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4256 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4257 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4258
4259 void java_lang_invoke_MemberName::compute_offsets() {
4260 InstanceKlass* k = vmClasses::MemberName_klass();
4261 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4262 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4263 }
4264
4265 #if INCLUDE_CDS
4266 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4267 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4268 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4269 }
4270 #endif
4271
4272 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4273 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4274
4275 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4276 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4277 assert(k != nullptr, "jdk mismatch");
4278 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4279 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4280 }
4281
4282 #if INCLUDE_CDS
4283 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4284 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4285 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4286 }
4287 #endif
4288
4289 #define LAMBDAFORM_FIELDS_DO(macro) \
4290 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4291
4292 void java_lang_invoke_LambdaForm::compute_offsets() {
4293 InstanceKlass* k = vmClasses::LambdaForm_klass();
4294 assert (k != nullptr, "jdk mismatch");
4295 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4296 }
4297
4298 #if INCLUDE_CDS
4299 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4300 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4301 }
4302 #endif
4303
4304 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4305 return obj != nullptr && is_subclass(obj->klass());
4306 }
4307
4308 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4309 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4310
4311 #define NEP_FIELDS_DO(macro) \
4312 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4313 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4314
4315 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4316 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4317 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4318 }
4319
4320 #if INCLUDE_CDS
4321 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4322 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4323 }
4324 #endif
4325
4326 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4327 return entry->obj_field(_method_type_offset);
4328 }
4329
4330 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4331 return entry->long_field(_downcall_stub_address_offset);
4332 }
4333
4334 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4335 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4336 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4337 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4338 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4339 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4340 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4341
4342 #define ABIDescriptor_FIELDS_DO(macro) \
4343 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4344 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4345 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4346 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4347 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4348 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4349 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4350
4351 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4352 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4353 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4354 }
4355
4356 #if INCLUDE_CDS
4357 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4358 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4359 }
4360 #endif
4361
4362 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4363 return oop_cast<refArrayOop>(entry->obj_field(_inputStorage_offset));
4364 }
4365
4366 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4367 return oop_cast<refArrayOop>(entry->obj_field(_outputStorage_offset));
4368 }
4369
4370 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4371 return oop_cast<refArrayOop>(entry->obj_field(_volatileStorage_offset));
4372 }
4373
4374 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4375 return entry->int_field(_stackAlignment_offset);
4376 }
4377
4378 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4379 return entry->int_field(_shadowSpace_offset);
4380 }
4381
4382 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4383 return entry->obj_field(_scratch1_offset);
4384 }
4385
4386 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4387 return entry->obj_field(_scratch2_offset);
4388 }
4389
4390 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4391 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4392 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4393 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4394
4395 #define VMStorage_FIELDS_DO(macro) \
4396 macro(_type_offset, k, "type", byte_signature, false); \
4397 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4398 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4399 macro(_debugName_offset, k, "debugName", string_signature, false); \
4400
4401 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4402 return obj != nullptr && is_subclass(obj->klass());
4403 }
4404
4405 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4406 InstanceKlass* k = vmClasses::VMStorage_klass();
4407 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4408 }
4409
4410 #if INCLUDE_CDS
4411 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4412 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4413 }
4414 #endif
4415
4416 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4417 return entry->byte_field(_type_offset);
4418 }
4419
4420 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4421 return entry->int_field(_indexOrOffset_offset);
4422 }
4423
4424 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4425 return entry->short_field(_segmentMaskOrSize_offset);
4426 }
4427
4428 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4429 return entry->obj_field(_debugName_offset);
4430 }
4431
4432 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4433 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4434
4435 #define CallConv_FIELDS_DO(macro) \
4436 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4437 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4438
4439 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4440 return obj != nullptr && is_subclass(obj->klass());
4441 }
4442
4443 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4444 InstanceKlass* k = vmClasses::CallConv_klass();
4445 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4446 }
4447
4448 #if INCLUDE_CDS
4449 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4450 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4451 }
4452 #endif
4453
4454 refArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4455 return oop_cast<refArrayOop>(entry->obj_field(_argRegs_offset));
4456 }
4457
4458 refArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4459 return oop_cast<refArrayOop>(entry->obj_field(_retRegs_offset));
4460 }
4461
4462 oop java_lang_invoke_MethodHandle::type(oop mh) {
4463 return mh->obj_field(_type_offset);
4464 }
4465
4466 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4467 mh->obj_field_put(_type_offset, mtype);
4468 }
4469
4470 oop java_lang_invoke_MethodHandle::form(oop mh) {
4471 assert(_form_offset != 0, "");
4472 return mh->obj_field(_form_offset);
4473 }
4474
4475 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4476 assert(_form_offset != 0, "");
4477 mh->obj_field_put(_form_offset, lform);
4478 }
4479
4480 /// MemberName accessors
4481
4482 oop java_lang_invoke_MemberName::clazz(oop mname) {
4483 assert(is_instance(mname), "wrong type");
4484 return mname->obj_field(_clazz_offset);
4485 }
4486
4487 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4488 assert(is_instance(mname), "wrong type");
4489 mname->obj_field_put(_clazz_offset, clazz);
4490 }
4491
4492 oop java_lang_invoke_MemberName::name(oop mname) {
4493 assert(is_instance(mname), "wrong type");
4494 return mname->obj_field(_name_offset);
4495 }
4496
4497 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4498 assert(is_instance(mname), "wrong type");
4499 mname->obj_field_put(_name_offset, name);
4500 }
4501
4502 oop java_lang_invoke_MemberName::type(oop mname) {
4503 assert(is_instance(mname), "wrong type");
4504 return mname->obj_field(_type_offset);
4505 }
4506
4507 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4508 assert(is_instance(mname), "wrong type");
4509 mname->obj_field_put(_type_offset, type);
4510 }
4511
4512 int java_lang_invoke_MemberName::flags(oop mname) {
4513 assert(is_instance(mname), "wrong type");
4514 return mname->int_field(_flags_offset);
4515 }
4516
4517 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4518 assert(is_instance(mname), "wrong type");
4519 mname->int_field_put(_flags_offset, flags);
4520 }
4521
4522 // Return vmtarget from ResolvedMethodName method field through indirection
4523 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4524 assert(is_instance(mname), "wrong type");
4525 oop method = mname->obj_field(_method_offset);
4526 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4527 }
4528
4529 bool java_lang_invoke_MemberName::is_method(oop mname) {
4530 assert(is_instance(mname), "must be MemberName");
4531 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4532 }
4533
4534 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4535 assert(is_instance(mname), "wrong type");
4536 mname->obj_field_put(_method_offset, resolved_method);
4537 }
4538
4539 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4540 assert(is_instance(mname), "wrong type");
4541 return (intptr_t) mname->address_field(_vmindex_offset);
4542 }
4543
4544 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4545 assert(is_instance(mname), "wrong type");
4546 mname->address_field_put(_vmindex_offset, (address) index);
4547 }
4548
4549
4550 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4551 assert(is_instance(resolved_method), "wrong type");
4552 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4553 assert(m->is_method(), "must be");
4554 return m;
4555 }
4556
4557 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4558 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4559 assert(is_instance(resolved_method), "wrong type");
4560 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4561 }
4562
4563 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4564 assert(is_instance(resolved_method), "wrong type");
4565 resolved_method->obj_field_put(_vmholder_offset, holder);
4566 }
4567
4568 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4569 const Method* method = m();
4570
4571 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4572 oop resolved_method = ResolvedMethodTable::find_method(method);
4573 if (resolved_method != nullptr) {
4574 return resolved_method;
4575 }
4576
4577 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4578 if (!k->is_initialized()) {
4579 k->initialize(CHECK_NULL);
4580 }
4581
4582 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4583
4584 NoSafepointVerifier nsv;
4585
4586 if (method->is_old()) {
4587 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4588 method->get_new_method();
4589 }
4590
4591 InstanceKlass* holder = method->method_holder();
4592
4593 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4594 // Add a reference to the loader (actually mirror because hidden classes may not have
4595 // distinct loaders) to ensure the metadata is kept alive.
4596 // This mirror may be different than the one in clazz field.
4597 set_vmholder(new_resolved_method, holder->java_mirror());
4598
4599 // Set flag in class to indicate this InstanceKlass has entries in the table
4600 // to avoid walking table during redefinition if none of the redefined classes
4601 // have any membernames in the table.
4602 holder->set_has_resolved_methods();
4603
4604 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4605 }
4606
4607 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4608 assert(is_instance(lform), "wrong type");
4609 return lform->obj_field(_vmentry_offset);
4610 }
4611
4612
4613 // Support for java_lang_invoke_MethodType
4614
4615 int java_lang_invoke_MethodType::_rtype_offset;
4616 int java_lang_invoke_MethodType::_ptypes_offset;
4617
4618 #define METHODTYPE_FIELDS_DO(macro) \
4619 macro(_rtype_offset, k, "rtype", class_signature, false); \
4620 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4621
4622 void java_lang_invoke_MethodType::compute_offsets() {
4623 InstanceKlass* k = vmClasses::MethodType_klass();
4624 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4625 }
4626
4627 #if INCLUDE_CDS
4628 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4629 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4630 }
4631 #endif
4632
4633 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4634 st->print("(");
4635 refArrayOop pts = ptypes(mt);
4636 if (pts != nullptr) {
4637 for (int i = 0, limit = pts->length(); i < limit; i++) {
4638 java_lang_Class::print_signature(pts->obj_at(i), st);
4639 }
4640 } else {
4641 st->print("null");
4642 }
4643 st->print(")");
4644 oop rt = rtype(mt);
4645 if (rt != nullptr) {
4646 java_lang_Class::print_signature(rt, st);
4647 } else {
4648 st->print("null");
4649 }
4650 }
4651
4652 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4653 ResourceMark rm;
4654 stringStream buffer(128);
4655 print_signature(mt, &buffer);
4656 const char* sigstr = buffer.base();
4657 int siglen = (int) buffer.size();
4658 Symbol *name;
4659 if (!intern_if_not_found) {
4660 name = SymbolTable::probe(sigstr, siglen);
4661 } else {
4662 name = SymbolTable::new_symbol(sigstr, siglen);
4663 }
4664 return name;
4665 }
4666
4667 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4668 if (mt1 == mt2)
4669 return true;
4670 if (rtype(mt1) != rtype(mt2))
4671 return false;
4672 if (ptype_count(mt1) != ptype_count(mt2))
4673 return false;
4674 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4675 if (ptype(mt1, i) != ptype(mt2, i))
4676 return false;
4677 }
4678 return true;
4679 }
4680
4681 oop java_lang_invoke_MethodType::rtype(oop mt) {
4682 assert(is_instance(mt), "must be a MethodType");
4683 return mt->obj_field(_rtype_offset);
4684 }
4685
4686 refArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4687 assert(is_instance(mt), "must be a MethodType");
4688 return (refArrayOop) mt->obj_field(_ptypes_offset);
4689 }
4690
4691 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4692 return ptypes(mt)->obj_at(idx);
4693 }
4694
4695 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4696 return ptypes(mt)->length();
4697 }
4698
4699 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4700 refArrayOop pts = ptypes(mt);
4701 int count = pts->length();
4702 int slots = 0;
4703 for (int i = 0; i < count; i++) {
4704 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4705 slots += type2size[bt];
4706 }
4707 return slots;
4708 }
4709
4710 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4711 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4712 return type2size[bt];
4713 }
4714
4715
4716 // Support for java_lang_invoke_CallSite
4717
4718 int java_lang_invoke_CallSite::_target_offset;
4719 int java_lang_invoke_CallSite::_vmdependencies_offset;
4720 int java_lang_invoke_CallSite::_last_cleanup_offset;
4721
4722 #define CALLSITE_FIELDS_DO(macro) \
4723 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4724
4725 void java_lang_invoke_CallSite::compute_offsets() {
4726 InstanceKlass* k = vmClasses::CallSite_klass();
4727 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4728 CALLSITE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4729 }
4730
4731 #if INCLUDE_CDS
4732 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4733 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4734 CALLSITE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4735 }
4736 #endif
4737
4738 DependencyContext java_lang_invoke_CallSite::vmdependencies(oop call_site) {
4739 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4740 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4741 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4742 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4743 return dep_ctx;
4744 }
4745
4746 // Support for java_lang_invoke_ConstantCallSite
4747
4748 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4749
4750 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4751 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4752
4753 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4754 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4755 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4756 }
4757
4758 #if INCLUDE_CDS
4759 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4760 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4761 }
4762 #endif
4763
4764 // Support for java_lang_ClassLoader
4765
4766 int java_lang_ClassLoader::_loader_data_offset;
4767 int java_lang_ClassLoader::_parallelCapable_offset;
4768 int java_lang_ClassLoader::_name_offset;
4769 int java_lang_ClassLoader::_nameAndId_offset;
4770 int java_lang_ClassLoader::_unnamedModule_offset;
4771 int java_lang_ClassLoader::_parent_offset;
4772
4773 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4774 assert(loader != nullptr, "loader must not be null");
4775 assert(oopDesc::is_oop(loader), "loader must be oop");
4776 return AtomicAccess::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4777 }
4778
4779 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4780 assert(loader != nullptr, "loader must not be null");
4781 assert(oopDesc::is_oop(loader), "loader must be oop");
4782 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4783 }
4784
4785 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4786 assert(loader != nullptr, "loader must not be null");
4787 assert(oopDesc::is_oop(loader), "loader must be oop");
4788 AtomicAccess::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4789 }
4790
4791 #define CLASSLOADER_FIELDS_DO(macro) \
4792 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4793 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4794 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4795 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4796 macro(_parent_offset, k1, "parent", classloader_signature, false)
4797
4798 void java_lang_ClassLoader::compute_offsets() {
4799 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4800 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4801
4802 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4803 }
4804
4805 #if INCLUDE_CDS
4806 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4807 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4808 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4809 }
4810 #endif
4811
4812 oop java_lang_ClassLoader::parent(oop loader) {
4813 assert(is_instance(loader), "loader must be oop");
4814 return loader->obj_field(_parent_offset);
4815 }
4816
4817 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4818 assert(is_instance(loader), "loader must be oop");
4819 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4820 }
4821
4822 // Returns the name field of this class loader. If the name field has not
4823 // been set, null will be returned.
4824 oop java_lang_ClassLoader::name(oop loader) {
4825 assert(is_instance(loader), "loader must be oop");
4826 return loader->obj_field(_name_offset);
4827 }
4828
4829 // Returns the nameAndId field of this class loader. The format is
4830 // as follows:
4831 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4832 // If the defining loader has no name then <qualified-class-name> @<id>
4833 // If built-in loader, then omit '@<id>' as there is only one instance.
4834 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4835 oop java_lang_ClassLoader::nameAndId(oop loader) {
4836 assert(is_instance(loader), "loader must be oop");
4837 return loader->obj_field(_nameAndId_offset);
4838 }
4839
4840 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4841 assert(is_instance(loader), "loader must be oop");
4842 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4843 oop acl = loader;
4844 DEBUG_ONLY(jint loop_count = 0);
4845 // This loop taken verbatim from ClassLoader.java:
4846 do {
4847 acl = parent(acl);
4848 if (cl == acl) {
4849 return true;
4850 }
4851 assert(++loop_count > 0, "loop_count overflow");
4852 } while (acl != nullptr);
4853 return false;
4854 }
4855
4856 bool java_lang_ClassLoader::is_instance(oop obj) {
4857 return obj != nullptr && is_subclass(obj->klass());
4858 }
4859
4860
4861 // For class loader classes, parallelCapable defined
4862 // based on non-null field
4863 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4864 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4865 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4866 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4867 }
4868
4869 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4870 oop cl = SystemDictionary::java_system_loader();
4871 while(cl != nullptr) {
4872 if (cl == loader) return true;
4873 cl = parent(cl);
4874 }
4875 return false;
4876 }
4877
4878 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4879 assert(is_instance(loader), "loader must be oop");
4880 return loader->obj_field(_unnamedModule_offset);
4881 }
4882
4883 // Support for java_lang_System
4884 //
4885
4886 int java_lang_System::_static_in_offset;
4887 int java_lang_System::_static_out_offset;
4888 int java_lang_System::_static_err_offset;
4889
4890 #define SYSTEM_FIELDS_DO(macro) \
4891 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4892 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4893 macro(_static_err_offset, k, "err", print_stream_signature, true);
4894
4895 void java_lang_System::compute_offsets() {
4896 InstanceKlass* k = vmClasses::System_klass();
4897 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4898 }
4899
4900 #if INCLUDE_CDS
4901 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4902 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4903 }
4904 #endif
4905
4906 // Support for jdk_internal_misc_UnsafeConstants
4907 //
4908 class UnsafeConstantsFixup : public FieldClosure {
4909 private:
4910 int _address_size;
4911 int _page_size;
4912 bool _big_endian;
4913 bool _use_unaligned_access;
4914 int _data_cache_line_flush_size;
4915 public:
4916 UnsafeConstantsFixup() {
4917 // round up values for all static final fields
4918 _address_size = sizeof(void*);
4919 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4920 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4921 _use_unaligned_access = UseUnalignedAccesses;
4922 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4923 }
4924
4925 void do_field(fieldDescriptor* fd) {
4926 oop mirror = fd->field_holder()->java_mirror();
4927 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4928 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4929 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4930 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4931 if (fd->name() == vmSymbols::address_size_name()) {
4932 mirror->int_field_put(fd->offset(), _address_size);
4933 } else if (fd->name() == vmSymbols::page_size_name()) {
4934 mirror->int_field_put(fd->offset(), _page_size);
4935 } else if (fd->name() == vmSymbols::big_endian_name()) {
4936 mirror->bool_field_put(fd->offset(), _big_endian);
4937 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4938 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4939 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4940 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4941 } else {
4942 assert(false, "unexpected UnsafeConstants field");
4943 }
4944 }
4945 };
4946
4947 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4948 UnsafeConstantsFixup fixup;
4949 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4950 }
4951
4952
4953 // java_lang_StackTraceElement
4954
4955 int java_lang_StackTraceElement::_methodName_offset;
4956 int java_lang_StackTraceElement::_fileName_offset;
4957 int java_lang_StackTraceElement::_lineNumber_offset;
4958 int java_lang_StackTraceElement::_moduleName_offset;
4959 int java_lang_StackTraceElement::_moduleVersion_offset;
4960 int java_lang_StackTraceElement::_classLoaderName_offset;
4961 int java_lang_StackTraceElement::_declaringClass_offset;
4962 int java_lang_StackTraceElement::_declaringClassObject_offset;
4963
4964 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4965 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4966 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4967 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4968 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4969 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4970 macro(_methodName_offset, k, "methodName", string_signature, false); \
4971 macro(_fileName_offset, k, "fileName", string_signature, false); \
4972 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4973
4974 // Support for java_lang_StackTraceElement
4975 void java_lang_StackTraceElement::compute_offsets() {
4976 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4977 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4978 }
4979
4980 #if INCLUDE_CDS
4981 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4982 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4983 }
4984 #endif
4985
4986 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4987 element->obj_field_put(_fileName_offset, value);
4988 }
4989
4990 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4991 element->obj_field_put(_declaringClass_offset, value);
4992 }
4993
4994 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4995 element->obj_field_put(_methodName_offset, value);
4996 }
4997
4998 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4999 element->int_field_put(_lineNumber_offset, value);
5000 }
5001
5002 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
5003 element->obj_field_put(_moduleName_offset, value);
5004 }
5005
5006 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
5007 element->obj_field_put(_moduleVersion_offset, value);
5008 }
5009
5010 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
5011 element->obj_field_put(_classLoaderName_offset, value);
5012 }
5013
5014 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
5015 element->obj_field_put(_declaringClassObject_offset, value);
5016 }
5017
5018
5019 // java_lang_AssertionStatusDirectives
5020
5021 int java_lang_AssertionStatusDirectives::_classes_offset;
5022 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
5023 int java_lang_AssertionStatusDirectives::_packages_offset;
5024 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
5025 int java_lang_AssertionStatusDirectives::_deflt_offset;
5026
5027 // Support for java Assertions - java_lang_AssertionStatusDirectives.
5028 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
5029 macro(_classes_offset, k, "classes", string_array_signature, false); \
5030 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
5031 macro(_packages_offset, k, "packages", string_array_signature, false); \
5032 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
5033 macro(_deflt_offset, k, "deflt", bool_signature, false)
5034
5035 void java_lang_AssertionStatusDirectives::compute_offsets() {
5036 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
5037 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5038 }
5039
5040 #if INCLUDE_CDS
5041 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
5042 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5043 }
5044 #endif
5045
5046 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
5047 o->obj_field_put(_classes_offset, val);
5048 }
5049
5050 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
5051 o->obj_field_put(_classEnabled_offset, val);
5052 }
5053
5054 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
5055 o->obj_field_put(_packages_offset, val);
5056 }
5057
5058 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
5059 o->obj_field_put(_packageEnabled_offset, val);
5060 }
5061
5062 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
5063 o->bool_field_put(_deflt_offset, val);
5064 }
5065
5066 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5067
5068 #define AOS_FIELDS_DO(macro) \
5069 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5070
5071 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5072 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5073 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5074 }
5075
5076 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5077 assert(_owner_offset != 0, "Must be initialized");
5078 return obj->obj_field(_owner_offset);
5079 }
5080
5081 #if INCLUDE_CDS
5082 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5083 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5084 }
5085 #endif
5086
5087 int vector_VectorPayload::_payload_offset;
5088
5089 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5090 macro(_payload_offset, k, "payload", object_signature, false)
5091
5092 void vector_VectorPayload::compute_offsets() {
5093 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5094 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5095 }
5096
5097 #if INCLUDE_CDS
5098 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5099 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5100 }
5101 #endif
5102
5103 void vector_VectorPayload::set_payload(oop o, oop val) {
5104 o->obj_field_put(_payload_offset, val);
5105 }
5106
5107 bool vector_VectorPayload::is_instance(oop obj) {
5108 return obj != nullptr && is_subclass(obj->klass());
5109 }
5110
5111 int java_lang_Integer_IntegerCache::_static_cache_offset;
5112 int java_lang_Long_LongCache::_static_cache_offset;
5113 int java_lang_Character_CharacterCache::_static_cache_offset;
5114 int java_lang_Short_ShortCache::_static_cache_offset;
5115 int java_lang_Byte_ByteCache::_static_cache_offset;
5116
5117 #define INTEGER_CACHE_FIELDS_DO(macro) \
5118 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5119
5120 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5121 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5122 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5123 }
5124
5125 refArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5126 oop base = ik->static_field_base_raw();
5127 return refArrayOop(base->obj_field(_static_cache_offset));
5128 }
5129
5130 Symbol* java_lang_Integer_IntegerCache::symbol() {
5131 return vmSymbols::java_lang_Integer_IntegerCache();
5132 }
5133
5134 #if INCLUDE_CDS
5135 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5136 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5137 }
5138 #endif
5139 #undef INTEGER_CACHE_FIELDS_DO
5140
5141 jint java_lang_Integer::value(oop obj) {
5142 jvalue v;
5143 java_lang_boxing_object::get_value(obj, &v);
5144 return v.i;
5145 }
5146
5147 #define LONG_CACHE_FIELDS_DO(macro) \
5148 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5149
5150 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5151 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5152 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5153 }
5154
5155 refArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5156 oop base = ik->static_field_base_raw();
5157 return refArrayOop(base->obj_field(_static_cache_offset));
5158 }
5159
5160 Symbol* java_lang_Long_LongCache::symbol() {
5161 return vmSymbols::java_lang_Long_LongCache();
5162 }
5163
5164 #if INCLUDE_CDS
5165 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5166 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5167 }
5168 #endif
5169 #undef LONG_CACHE_FIELDS_DO
5170
5171 jlong java_lang_Long::value(oop obj) {
5172 jvalue v;
5173 java_lang_boxing_object::get_value(obj, &v);
5174 return v.j;
5175 }
5176
5177 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5178 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5179
5180 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5181 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5182 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5183 }
5184
5185 refArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5186 oop base = ik->static_field_base_raw();
5187 return refArrayOop(base->obj_field(_static_cache_offset));
5188 }
5189
5190 Symbol* java_lang_Character_CharacterCache::symbol() {
5191 return vmSymbols::java_lang_Character_CharacterCache();
5192 }
5193
5194 #if INCLUDE_CDS
5195 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5196 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5197 }
5198 #endif
5199 #undef CHARACTER_CACHE_FIELDS_DO
5200
5201 jchar java_lang_Character::value(oop obj) {
5202 jvalue v;
5203 java_lang_boxing_object::get_value(obj, &v);
5204 return v.c;
5205 }
5206
5207 #define SHORT_CACHE_FIELDS_DO(macro) \
5208 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5209
5210 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5211 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5212 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5213 }
5214
5215 refArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5216 oop base = ik->static_field_base_raw();
5217 return refArrayOop(base->obj_field(_static_cache_offset));
5218 }
5219
5220 Symbol* java_lang_Short_ShortCache::symbol() {
5221 return vmSymbols::java_lang_Short_ShortCache();
5222 }
5223
5224 #if INCLUDE_CDS
5225 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5226 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5227 }
5228 #endif
5229 #undef SHORT_CACHE_FIELDS_DO
5230
5231 jshort java_lang_Short::value(oop obj) {
5232 jvalue v;
5233 java_lang_boxing_object::get_value(obj, &v);
5234 return v.s;
5235 }
5236
5237 #define BYTE_CACHE_FIELDS_DO(macro) \
5238 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5239
5240 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5241 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5242 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5243 }
5244
5245 refArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5246 oop base = ik->static_field_base_raw();
5247 return refArrayOop(base->obj_field(_static_cache_offset));
5248 }
5249
5250 Symbol* java_lang_Byte_ByteCache::symbol() {
5251 return vmSymbols::java_lang_Byte_ByteCache();
5252 }
5253
5254 #if INCLUDE_CDS
5255 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5256 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5257 }
5258 #endif
5259 #undef BYTE_CACHE_FIELDS_DO
5260
5261 jbyte java_lang_Byte::value(oop obj) {
5262 jvalue v;
5263 java_lang_boxing_object::get_value(obj, &v);
5264 return v.b;
5265 }
5266
5267 int java_lang_Boolean::_static_TRUE_offset;
5268 int java_lang_Boolean::_static_FALSE_offset;
5269
5270 #define BOOLEAN_FIELDS_DO(macro) \
5271 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5272 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5273
5274
5275 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5276 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5277 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5278 }
5279
5280 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5281 oop base = ik->static_field_base_raw();
5282 return base->obj_field(_static_TRUE_offset);
5283 }
5284
5285 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5286 oop base = ik->static_field_base_raw();
5287 return base->obj_field(_static_FALSE_offset);
5288 }
5289
5290 Symbol* java_lang_Boolean::symbol() {
5291 return vmSymbols::java_lang_Boolean();
5292 }
5293
5294 #if INCLUDE_CDS
5295 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5296 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5297 }
5298 #endif
5299 #undef BOOLEAN_CACHE_FIELDS_DO
5300
5301 jboolean java_lang_Boolean::value(oop obj) {
5302 jvalue v;
5303 java_lang_boxing_object::get_value(obj, &v);
5304 return v.z;
5305 }
5306
5307 // java_lang_reflect_RecordComponent
5308
5309 int java_lang_reflect_RecordComponent::_clazz_offset;
5310 int java_lang_reflect_RecordComponent::_name_offset;
5311 int java_lang_reflect_RecordComponent::_type_offset;
5312 int java_lang_reflect_RecordComponent::_accessor_offset;
5313 int java_lang_reflect_RecordComponent::_signature_offset;
5314 int java_lang_reflect_RecordComponent::_annotations_offset;
5315 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5316
5317 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5318 macro(_clazz_offset, k, "clazz", class_signature, false); \
5319 macro(_name_offset, k, "name", string_signature, false); \
5320 macro(_type_offset, k, "type", class_signature, false); \
5321 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5322 macro(_signature_offset, k, "signature", string_signature, false); \
5323 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5324 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5325
5326 // Support for java_lang_reflect_RecordComponent
5327 void java_lang_reflect_RecordComponent::compute_offsets() {
5328 InstanceKlass* k = vmClasses::RecordComponent_klass();
5329 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5330 }
5331
5332 #if INCLUDE_CDS
5333 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5334 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5335 }
5336 #endif
5337
5338 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5339 element->obj_field_put(_clazz_offset, value);
5340 }
5341
5342 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5343 element->obj_field_put(_name_offset, value);
5344 }
5345
5346 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5347 element->obj_field_put(_type_offset, value);
5348 }
5349
5350 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5351 element->obj_field_put(_accessor_offset, value);
5352 }
5353
5354 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5355 element->obj_field_put(_signature_offset, value);
5356 }
5357
5358 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5359 element->obj_field_put(_annotations_offset, value);
5360 }
5361
5362 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5363 element->obj_field_put(_typeAnnotations_offset, value);
5364 }
5365
5366 // java_lang_InternalError
5367 int java_lang_InternalError::_during_unsafe_access_offset;
5368
5369 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5370 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5371 }
5372
5373 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5374 return internal_error->bool_field(_during_unsafe_access_offset);
5375 }
5376
5377 void java_lang_InternalError::compute_offsets() {
5378 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5379 }
5380
5381 #if INCLUDE_CDS
5382 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5383 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5384 }
5385 #endif
5386
5387 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5388 f(java_lang_Class) \
5389 f(java_lang_String) \
5390 f(java_lang_ref_Reference) \
5391 //end
5392
5393 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5394 f(java_lang_System) \
5395 f(java_lang_ClassLoader) \
5396 f(java_lang_Throwable) \
5397 f(java_lang_Thread) \
5398 f(java_lang_Thread_FieldHolder) \
5399 f(java_lang_Thread_Constants) \
5400 f(java_lang_ThreadGroup) \
5401 f(java_lang_VirtualThread) \
5402 f(java_lang_InternalError) \
5403 f(java_lang_AssertionStatusDirectives) \
5404 f(java_lang_ref_SoftReference) \
5405 f(java_lang_invoke_MethodHandle) \
5406 f(java_lang_invoke_DirectMethodHandle) \
5407 f(java_lang_invoke_MemberName) \
5408 f(java_lang_invoke_ResolvedMethodName) \
5409 f(java_lang_invoke_LambdaForm) \
5410 f(java_lang_invoke_MethodType) \
5411 f(java_lang_invoke_CallSite) \
5412 f(java_lang_invoke_ConstantCallSite) \
5413 f(java_lang_reflect_AccessibleObject) \
5414 f(java_lang_reflect_Method) \
5415 f(java_lang_reflect_Constructor) \
5416 f(java_lang_reflect_Field) \
5417 f(java_lang_reflect_RecordComponent) \
5418 f(reflect_ConstantPool) \
5419 f(java_lang_reflect_Parameter) \
5420 f(java_lang_Module) \
5421 f(java_lang_StackTraceElement) \
5422 f(java_lang_ClassFrameInfo) \
5423 f(java_lang_StackFrameInfo) \
5424 f(java_lang_LiveStackFrameInfo) \
5425 f(jdk_internal_vm_ContinuationScope) \
5426 f(jdk_internal_vm_Continuation) \
5427 f(jdk_internal_vm_StackChunk) \
5428 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5429 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5430 f(jdk_internal_foreign_abi_ABIDescriptor) \
5431 f(jdk_internal_foreign_abi_VMStorage) \
5432 f(jdk_internal_foreign_abi_CallConv) \
5433 f(jdk_internal_misc_UnsafeConstants) \
5434 f(java_lang_boxing_object) \
5435 f(vector_VectorPayload) \
5436 //end
5437
5438 #define BASIC_JAVA_CLASSES_DO(f) \
5439 BASIC_JAVA_CLASSES_DO_PART1(f) \
5440 BASIC_JAVA_CLASSES_DO_PART2(f)
5441
5442 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5443
5444 // Compute field offsets of all the classes in this file
5445 void JavaClasses::compute_offsets() {
5446 if (CDSConfig::is_using_archive()) {
5447 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5448 JvmtiExport::has_early_class_hook_env()),
5449 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5450 // None of the classes used by the rest of this function can be replaced by
5451 // JVMTI ClassFileLoadHook.
5452 // We are safe to use the archived offsets, which have already been restored
5453 // by JavaClasses::serialize_offsets, without computing the offsets again.
5454 return;
5455 }
5456
5457 // We have already called the compute_offsets() of the
5458 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5459 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5460 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5461 }
5462
5463 #if INCLUDE_CDS
5464 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5465
5466 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5467 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5468 }
5469 #endif
5470
5471 #if INCLUDE_CDS_JAVA_HEAP
5472 bool JavaClasses::is_supported_for_archiving(oop obj) {
5473 Klass* klass = obj->klass();
5474
5475 if (!CDSConfig::is_dumping_method_handles()) {
5476 // These are supported by CDS only when CDSConfig::is_dumping_method_handles() is enabled.
5477 if (klass == vmClasses::ResolvedMethodName_klass() ||
5478 klass == vmClasses::MemberName_klass()) {
5479 return false;
5480 }
5481 }
5482
5483 if (!AOTReferenceObjSupport::is_enabled() && klass->is_subclass_of(vmClasses::Reference_klass())) {
5484 return false;
5485 }
5486
5487 return true;
5488 }
5489 #endif
5490
5491 #ifndef PRODUCT
5492
5493 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5494
5495 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5496 const char* field_sig) {
5497 EXCEPTION_MARK;
5498 fieldDescriptor fd;
5499 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5500 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5501 InstanceKlass* ik = InstanceKlass::cast(k);
5502 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5503 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5504 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5505 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5506 return false;
5507 }
5508 if (fd.is_static()) {
5509 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5510 return false;
5511 }
5512 if (fd.offset() == deserialized_offset ) {
5513 return true;
5514 } else {
5515 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5516 klass_name, field_name, deserialized_offset, fd.offset());
5517 return false;
5518 }
5519 }
5520
5521 void JavaClasses::check_offsets() {
5522 bool valid = true;
5523
5524 #define CHECK_OFFSET(klass_name, type, field_sig) \
5525 valid &= check_offset(klass_name, java_lang_boxing_object::value_offset(type), "value", field_sig)
5526
5527 CHECK_OFFSET("java/lang/Boolean", T_BOOLEAN, "Z");
5528 CHECK_OFFSET("java/lang/Character", T_CHAR, "C");
5529 CHECK_OFFSET("java/lang/Float", T_FLOAT, "F");
5530 CHECK_OFFSET("java/lang/Double", T_DOUBLE, "D");
5531 CHECK_OFFSET("java/lang/Byte", T_BYTE, "B");
5532 CHECK_OFFSET("java/lang/Short", T_SHORT, "S");
5533 CHECK_OFFSET("java/lang/Integer", T_INT, "I");
5534 CHECK_OFFSET("java/lang/Long", T_LONG, "J");
5535
5536 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5537 }
5538
5539 #endif // PRODUCT
5540
5541 int InjectedField::compute_offset() {
5542 InstanceKlass* ik = klass();
5543 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5544 if (!may_be_java && !fs.field_flags().is_injected()) {
5545 // Only look at injected fields
5546 continue;
5547 }
5548 if (fs.name() == name() && fs.signature() == signature()) {
5549 return fs.offset();
5550 }
5551 }
5552 ResourceMark rm;
5553 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)" : "");
5554 #ifndef PRODUCT
5555 ik->print();
5556 tty->print_cr("all fields:");
5557 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5558 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_field_flags());
5559 }
5560 #endif //PRODUCT
5561 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5562 return -1;
5563 }
5564
5565 void javaClasses_init() {
5566 JavaClasses::compute_offsets();
5567 JavaClasses::check_offsets();
5568 }