1 /*
2 * Copyright (c) 1997, 2025, 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/aotReferenceObjSupport.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/altHashing.hpp"
32 #include "classfile/classLoaderData.inline.hpp"
33 #include "classfile/javaClasses.inline.hpp"
34 #include "classfile/javaClassesImpl.hpp"
35 #include "classfile/javaThreadStatus.hpp"
36 #include "classfile/moduleEntry.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/debugInfo.hpp"
43 #include "code/dependencyContext.hpp"
44 #include "code/pcDesc.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/interpreter.hpp"
47 #include "interpreter/linkResolver.hpp"
48 #include "jvm.h"
49 #include "logging/log.hpp"
50 #include "logging/logStream.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "memory/resourceArea.hpp"
53 #include "memory/universe.hpp"
54 #include "oops/fieldInfo.hpp"
55 #include "oops/fieldStreams.inline.hpp"
56 #include "oops/flatArrayKlass.hpp"
57 #include "oops/inlineKlass.inline.hpp"
58 #include "oops/instanceKlass.inline.hpp"
59 #include "oops/instanceMirrorKlass.inline.hpp"
60 #include "oops/klass.inline.hpp"
61 #include "oops/method.inline.hpp"
62 #include "oops/objArrayKlass.hpp"
63 #include "oops/objArrayOop.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/oopCast.inline.hpp"
66 #include "oops/recordComponent.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/reflectionUtils.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 = Atomic::load(addr);
210 while ((value & flag_mask) == 0) {
211 uint8_t old_value = value;
212 value |= flag_mask;
213 value = Atomic::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::_raw_access_flags_offset;
875
876 bool java_lang_Class::_offsets_computed = false;
877 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
878 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
879
880 #ifdef ASSERT
881 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
882 assert(fd->has_initial_value(), "caller should have checked this");
883 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
884 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
885 }
886 #endif
887
888 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
889 DEBUG_ONLY(assert_valid_static_string_field(fd);)
890 oop string = fd->string_initial_value(CHECK);
891 mirror()->obj_field_put(fd->offset(), string);
892 }
893
894 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
895 assert(fd->has_initial_value(), "caller should have checked this");
896 BasicType t = fd->field_type();
897 switch (t) {
898 case T_BYTE:
899 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
900 break;
901 case T_BOOLEAN:
902 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
903 break;
904 case T_CHAR:
905 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
906 break;
907 case T_SHORT:
908 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
909 break;
910 case T_INT:
911 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
912 break;
913 case T_FLOAT:
914 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
915 break;
916 case T_DOUBLE:
917 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
918 break;
919 case T_LONG:
920 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
921 break;
922 default:
923 // Illegal ConstantValue attribute in class file should have been
924 // caught during classfile parsing.
925 ShouldNotReachHere();
926 }
927 }
928
929 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
930 assert(mirror.not_null() && fd->is_static(), "just checking");
931 if (fd->has_initial_value()) {
932 if (fd->field_type() != T_OBJECT) {
933 initialize_static_primitive_field(fd, mirror);
934 } else {
935 initialize_static_string_field(fd, mirror, CHECK);
936 }
937 }
938 }
939
940 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
941 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
942
943 // If the offset was read from the shared archive, it was fixed up already
944 if (!k->is_shared()) {
945 if (k->is_instance_klass()) {
946 // During bootstrap, java.lang.Class wasn't loaded so static field
947 // offsets were computed without the size added it. Go back and
948 // update all the static field offsets to included the size.
949
950 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
951 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
952 // static fields offsets are updated in this array before reencoding everything into
953 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
954
955 int java_fields;
956 int injected_fields;
957 InstanceKlass* ik = InstanceKlass::cast(k);
958 GrowableArray<FieldInfo>* fields =
959 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
960 &java_fields, &injected_fields);
961 for (int i = 0; i < fields->length(); i++) {
962 FieldInfo* fi = fields->adr_at(i);
963 if (fi->access_flags().is_static()) {
964 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
965 }
966 }
967 Array<u1>* old_stream = ik->fieldinfo_stream();
968 assert(fields->length() == (java_fields + injected_fields), "Must be");
969 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
970 ik->set_fieldinfo_stream(new_fis);
971 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
972
973 Array<u1>* old_table = ik->fieldinfo_search_table();
974 Array<u1>* search_table = FieldInfoStream::create_search_table(ik->constants(), new_fis, k->class_loader_data(), CHECK);
975 ik->set_fieldinfo_search_table(search_table);
976 MetadataFactory::free_array<u1>(k->class_loader_data(), old_table);
977
978 DEBUG_ONLY(FieldInfoStream::validate_search_table(ik->constants(), new_fis, search_table));
979 }
980 }
981
982 if (k->is_shared() && k->has_archived_mirror_index()) {
983 if (ArchiveHeapLoader::is_in_use()) {
984 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
985 assert(present, "Missing archived mirror for %s", k->external_name());
986 return;
987 } else {
988 k->clear_java_mirror_handle();
989 k->clear_archived_mirror_index();
990 }
991 }
992 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
993 }
994
995 void java_lang_Class::initialize_mirror_fields(Klass* k,
996 Handle mirror,
997 Handle protection_domain,
998 Handle classData,
999 TRAPS) {
1000 // Allocate a simple java object for a lock.
1001 // This needs to be a java object because during class initialization
1002 // it can be held across a java call.
1003 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
1004 set_init_lock(mirror(), r);
1005
1006 // Set protection domain also
1007 set_protection_domain(mirror(), protection_domain());
1008
1009 // Initialize static fields
1010 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
1011
1012 // Set classData
1013 set_class_data(mirror(), classData());
1014 }
1015
1016 // Set the java.lang.Module module field in the java_lang_Class mirror
1017 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
1018 if (module.is_null()) {
1019 // During startup, the module may be null only if java.base has not been defined yet.
1020 // Put the class on the fixup_module_list to patch later when the java.lang.Module
1021 // for java.base is known. But note that since we captured the null module another
1022 // thread may have completed that initialization.
1023
1024 bool javabase_was_defined = false;
1025 {
1026 MutexLocker m1(current, Module_lock);
1027 // Keep list of classes needing java.base module fixup
1028 if (!ModuleEntryTable::javabase_defined()) {
1029 assert(k->java_mirror() != nullptr, "Class's mirror is null");
1030 k->class_loader_data()->inc_keep_alive_ref_count();
1031 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
1032 fixup_module_field_list()->push(k);
1033 } else {
1034 javabase_was_defined = true;
1035 }
1036 }
1037
1038 // If java.base was already defined then patch this particular class with java.base.
1039 if (javabase_was_defined) {
1040 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
1041 assert(javabase_entry != nullptr && javabase_entry->module_oop() != nullptr,
1042 "Setting class module field, " JAVA_BASE_NAME " should be defined");
1043 Handle javabase_handle(current, javabase_entry->module_oop());
1044 set_module(mirror(), javabase_handle());
1045 }
1046 } else {
1047 assert(Universe::is_module_initialized() ||
1048 (ModuleEntryTable::javabase_defined() &&
1049 (module() == ModuleEntryTable::javabase_moduleEntry()->module_oop())),
1050 "Incorrect java.lang.Module specification while creating mirror");
1051 set_module(mirror(), module());
1052 }
1053 }
1054
1055 // Statically allocate fixup lists because they always get created.
1056 void java_lang_Class::allocate_fixup_lists() {
1057 GrowableArray<Klass*>* mirror_list =
1058 new (mtClass) GrowableArray<Klass*>(40, mtClass);
1059 set_fixup_mirror_list(mirror_list);
1060
1061 GrowableArray<Klass*>* module_list =
1062 new (mtModule) GrowableArray<Klass*>(500, mtModule);
1063 set_fixup_module_field_list(module_list);
1064 }
1065
1066 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1067 Handle& mirror, Handle& comp_mirror, TRAPS) {
1068 // Allocate mirror (java.lang.Class instance)
1069 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1070 mirror = Handle(THREAD, mirror_oop);
1071
1072 // Setup indirection from mirror->klass
1073 set_klass(mirror(), k);
1074
1075 // Set the modifiers flag.
1076 u2 computed_modifiers = k->compute_modifier_flags();
1077 set_modifiers(mirror(), computed_modifiers);
1078 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1079 // The Java code for array classes gets the access flags from the element type.
1080 assert(!k->is_array_klass() || k->access_flags().as_unsigned_short() == 0, "access flags are not set for arrays");
1081 set_raw_access_flags(mirror(), k->access_flags().as_unsigned_short());
1082
1083 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1084 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1085
1086 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1087
1088 // It might also have a component mirror. This mirror must already exist.
1089 if (k->is_array_klass()) {
1090 if (k->is_flatArray_klass()) {
1091 Klass* element_klass = (Klass*) FlatArrayKlass::cast(k)->element_klass();
1092 assert(element_klass->is_inline_klass(), "Must be inline type component");
1093 if (is_scratch) {
1094 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1095 } else {
1096 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1097 }
1098 } else if (k->is_typeArray_klass()) {
1099 BasicType type = TypeArrayKlass::cast(k)->element_type();
1100 if (is_scratch) {
1101 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1102 } else {
1103 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1104 }
1105 } else {
1106 assert(k->is_objArray_klass(), "Must be");
1107 assert(!k->is_refArray_klass() || !k->is_flatArray_klass(), "Must not have mirror");
1108 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1109 assert(element_klass != nullptr, "Must have an element klass");
1110 oop comp_oop = element_klass->java_mirror();
1111 if (is_scratch) {
1112 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1113 } else {
1114 comp_mirror = Handle(THREAD, comp_oop);
1115 }
1116 }
1117 assert(comp_mirror() != nullptr, "must have a mirror");
1118
1119 // Two-way link between the array klass and its component mirror:
1120 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1121 set_component_mirror(mirror(), comp_mirror());
1122 // See below for ordering dependencies between field array_klass in component mirror
1123 // and java_mirror in this klass.
1124 } else {
1125 assert(k->is_instance_klass(), "Must be");
1126
1127 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1128 if (HAS_PENDING_EXCEPTION) {
1129 // If any of the fields throws an exception like OOM remove the klass field
1130 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1131 // This mirror looks like a primitive type, which logically it is because it
1132 // it represents no class.
1133 set_klass(mirror(), nullptr);
1134 return;
1135 }
1136 }
1137 }
1138
1139 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1140 Handle module, Handle protection_domain,
1141 Handle classData, TRAPS) {
1142 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1143 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1144 // Class_klass has to be loaded because it is used to allocate
1145 // the mirror.
1146 if (vmClasses::Class_klass_loaded()) {
1147
1148 if (k->is_refined_objArray_klass()) {
1149 Klass* super_klass = k->super();
1150 assert(super_klass != nullptr, "Must be");
1151 Handle mirror(THREAD, super_klass->java_mirror());
1152 k->set_java_mirror(mirror);
1153 return;
1154 }
1155
1156 Handle mirror;
1157 Handle comp_mirror;
1158
1159 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1160
1161 // set the classLoader field in the java_lang_Class instance
1162 assert(class_loader() == k->class_loader(), "should be same");
1163 set_class_loader(mirror(), class_loader());
1164
1165 // Setup indirection from klass->mirror
1166 // after any exceptions can happen during allocations.
1167 k->set_java_mirror(mirror);
1168
1169 // Set the module field in the java_lang_Class instance. This must be done
1170 // after the mirror is set.
1171 set_mirror_module_field(THREAD, k, mirror, module);
1172
1173 if (comp_mirror() != nullptr) {
1174 // Set after k->java_mirror() is published, because compiled code running
1175 // concurrently doesn't expect a k to have a null java_mirror.
1176 release_set_array_klass(comp_mirror(), k);
1177 }
1178
1179 if (CDSConfig::is_dumping_heap()) {
1180 create_scratch_mirror(k, CHECK);
1181 }
1182 } else {
1183 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1184 fixup_mirror_list()->push(k);
1185 }
1186 }
1187
1188 #if INCLUDE_CDS_JAVA_HEAP
1189 // The "scratch mirror" stores the states of the mirror object that can be
1190 // decided at dump time (such as the initial values of the static fields, the
1191 // component mirror, etc). At runtime, more information is added to it by
1192 // java_lang_Class::restore_archived_mirror().
1193 //
1194 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1195 // produces the same result as /*runtime*/create_mirror().
1196 //
1197 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1198 // latter may contain dumptime-specific information that cannot be archived
1199 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1200 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1201 if ((k->class_loader() != nullptr &&
1202 k->class_loader() != SystemDictionary::java_platform_loader() &&
1203 k->class_loader() != SystemDictionary::java_system_loader())) {
1204 // We only archive the mirrors of classes loaded by the built-in loaders
1205 return;
1206 }
1207
1208 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1209 Handle mirror;
1210 Handle comp_mirror;
1211 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1212
1213 if (comp_mirror() != nullptr) {
1214 release_set_array_klass(comp_mirror(), k);
1215 }
1216
1217 HeapShared::set_scratch_java_mirror(k, mirror());
1218 }
1219
1220 // Returns true if the mirror is updated, false if no archived mirror
1221 // data is present. After the archived mirror object is restored, the
1222 // shared klass' _has_raw_archived_mirror flag is cleared.
1223 bool java_lang_Class::restore_archived_mirror(Klass *k,
1224 Handle class_loader, Handle module,
1225 Handle protection_domain, TRAPS) {
1226 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1227 // see more details in vmClasses::resolve_all().
1228 if (!vmClasses::Class_klass_loaded()) {
1229 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1230 fixup_mirror_list()->push(k);
1231 return true;
1232 }
1233
1234 oop m = k->archived_java_mirror();
1235 assert(m != nullptr, "must have stored non-null archived mirror");
1236
1237 // Sanity: clear it now to prevent re-initialization if any of the following fails
1238 k->clear_archived_mirror_index();
1239
1240 // mirror is archived, restore
1241 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1242 Handle mirror(THREAD, m);
1243
1244 if (!k->is_array_klass()) {
1245 assert(as_Klass(m) == k, "must be");
1246 // - local static final fields with initial values were initialized at dump time
1247
1248 // create the init_lock
1249 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1250 set_init_lock(mirror(), r);
1251
1252 if (protection_domain.not_null()) {
1253 set_protection_domain(mirror(), protection_domain());
1254 }
1255 } else {
1256 ObjArrayKlass* objarray_k = (ObjArrayKlass*)as_Klass(m);
1257 // Mirror should be restored for an ObjArrayKlass or one of its refined array klasses
1258 assert(objarray_k == k || objarray_k->next_refined_array_klass() == k, "must be");
1259 }
1260
1261 assert(class_loader() == k->class_loader(), "should be same");
1262 if (class_loader.not_null()) {
1263 set_class_loader(mirror(), class_loader());
1264 }
1265
1266 k->set_java_mirror(mirror);
1267
1268 set_mirror_module_field(THREAD, k, mirror, module);
1269
1270 if (log_is_enabled(Trace, aot, heap, mirror)) {
1271 ResourceMark rm(THREAD);
1272 log_trace(aot, heap, mirror)(
1273 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1274 }
1275
1276 return true;
1277 }
1278 #endif // INCLUDE_CDS_JAVA_HEAP
1279
1280 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1281 assert(_module_offset != 0, "must have been computed already");
1282 set_module(k->java_mirror(), module());
1283 }
1284
1285 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1286 assert(_oop_size_offset != 0, "must be set");
1287 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1288 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1289 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1290 }
1291
1292 int java_lang_Class::static_oop_field_count(oop java_class) {
1293 assert(_static_oop_field_count_offset != 0, "must be set");
1294 return java_class->int_field(_static_oop_field_count_offset);
1295 }
1296
1297 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1298 assert(_static_oop_field_count_offset != 0, "must be set");
1299 java_class->int_field_put(_static_oop_field_count_offset, size);
1300 }
1301
1302 oop java_lang_Class::protection_domain(oop java_class) {
1303 assert(_protection_domain_offset != 0, "must be set");
1304 return java_class->obj_field(_protection_domain_offset);
1305 }
1306 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1307 assert(_protection_domain_offset != 0, "must be set");
1308 java_class->obj_field_put(_protection_domain_offset, pd);
1309 }
1310
1311 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1312 assert(_component_mirror_offset != 0, "must be set");
1313 assert(java_lang_Class::as_Klass(java_class) != nullptr &&
1314 java_lang_Class::as_Klass(java_class)->is_array_klass(), "must be");
1315 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1316 }
1317
1318 oop java_lang_Class::component_mirror(oop java_class) {
1319 assert(_component_mirror_offset != 0, "must be set");
1320 return java_class->obj_field(_component_mirror_offset);
1321 }
1322
1323 oop java_lang_Class::init_lock(oop java_class) {
1324 assert(_init_lock_offset != 0, "must be set");
1325 return java_class->obj_field(_init_lock_offset);
1326 }
1327 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1328 assert(_init_lock_offset != 0, "must be set");
1329 java_class->obj_field_put(_init_lock_offset, init_lock);
1330 }
1331
1332 objArrayOop java_lang_Class::signers(oop java_class) {
1333 assert(_signers_offset != 0, "must be set");
1334 return (objArrayOop)java_class->obj_field(_signers_offset);
1335 }
1336
1337 oop java_lang_Class::class_data(oop java_class) {
1338 assert(_classData_offset != 0, "must be set");
1339 return java_class->obj_field(_classData_offset);
1340 }
1341 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1342 assert(_classData_offset != 0, "must be set");
1343 java_class->obj_field_put(_classData_offset, class_data);
1344 }
1345
1346 void java_lang_Class::set_reflection_data(oop java_class, oop reflection_data) {
1347 assert(_reflectionData_offset != 0, "must be set");
1348 java_class->obj_field_put(_reflectionData_offset, reflection_data);
1349 }
1350
1351 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1352 assert(_class_loader_offset != 0, "offsets should have been initialized");
1353 java_class->obj_field_put(_class_loader_offset, loader);
1354 }
1355
1356 oop java_lang_Class::class_loader(oop java_class) {
1357 assert(_class_loader_offset != 0, "must be set");
1358 return java_class->obj_field(_class_loader_offset);
1359 }
1360
1361 oop java_lang_Class::module(oop java_class) {
1362 assert(_module_offset != 0, "must be set");
1363 return java_class->obj_field(_module_offset);
1364 }
1365
1366 void java_lang_Class::set_module(oop java_class, oop module) {
1367 assert(_module_offset != 0, "must be set");
1368 java_class->obj_field_put(_module_offset, module);
1369 }
1370
1371 oop java_lang_Class::name(Handle java_class, TRAPS) {
1372 assert(_name_offset != 0, "must be set");
1373 oop o = java_class->obj_field(_name_offset);
1374 if (o == nullptr) {
1375 o = StringTable::intern(as_external_name(java_class()), THREAD);
1376 java_class->obj_field_put(_name_offset, o);
1377 }
1378 return o;
1379 }
1380
1381 oop java_lang_Class::source_file(oop java_class) {
1382 assert(_source_file_offset != 0, "must be set");
1383 return java_class->obj_field(_source_file_offset);
1384 }
1385
1386 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1387 assert(_source_file_offset != 0, "must be set");
1388 java_class->obj_field_put(_source_file_offset, source_file);
1389 }
1390
1391 void java_lang_Class::set_is_primitive(oop java_class) {
1392 assert(_is_primitive_offset != 0, "must be set");
1393 java_class->bool_field_put(_is_primitive_offset, true);
1394 }
1395
1396
1397 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1398 // Mirrors for basic types have a null klass field, which makes them special.
1399 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1400 if (type != T_VOID) {
1401 Klass* aklass = Universe::typeArrayKlass(type);
1402 assert(aklass != nullptr, "correct bootstrap");
1403 release_set_array_klass(java_class, aklass);
1404 }
1405 #ifdef ASSERT
1406 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1407 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1408 #endif
1409 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1410 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1411
1412 set_is_primitive(java_class);
1413 return java_class;
1414 }
1415
1416 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1417 assert(is_instance(java_class), "must be a Class object");
1418 java_class->metadata_field_put(_klass_offset, klass);
1419 }
1420
1421
1422 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1423 assert(is_instance(java_class), "must be a Class object");
1424 Symbol* name = nullptr;
1425 bool is_instance = false;
1426 if (is_primitive(java_class)) {
1427 name = vmSymbols::type_signature(primitive_type(java_class));
1428 } else {
1429 Klass* k = as_Klass(java_class);
1430 is_instance = k->is_instance_klass();
1431 name = k->name();
1432 }
1433 if (name == nullptr) {
1434 st->print("<null>");
1435 return;
1436 }
1437 if (is_instance) {
1438 st->print("L");
1439 }
1440 st->write((char*) name->base(), (int) name->utf8_length());
1441 if (is_instance) st->print(";");
1442 }
1443
1444 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1445 assert(is_instance(java_class), "must be a Class object");
1446 Symbol* name;
1447 if (is_primitive(java_class)) {
1448 name = vmSymbols::type_signature(primitive_type(java_class));
1449 // Because this can create a new symbol, the caller has to decrement
1450 // the refcount, so make adjustment here and below for symbols returned
1451 // that are not created or incremented due to a successful lookup.
1452 name->increment_refcount();
1453 } else {
1454 Klass* k = as_Klass(java_class);
1455 if (!k->is_instance_klass()) {
1456 name = k->name();
1457 name->increment_refcount();
1458 } else {
1459 ResourceMark rm;
1460 const char* sigstr = k->signature_name();
1461 int siglen = (int) strlen(sigstr);
1462 if (!intern_if_not_found) {
1463 name = SymbolTable::probe(sigstr, siglen);
1464 } else {
1465 name = SymbolTable::new_symbol(sigstr, siglen);
1466 }
1467 }
1468 }
1469 return name;
1470 }
1471
1472 // Returns the Java name for this Java mirror (Resource allocated)
1473 // See Klass::external_name().
1474 // For primitive type Java mirrors, its type name is returned.
1475 const char* java_lang_Class::as_external_name(oop java_class) {
1476 assert(is_instance(java_class), "must be a Class object");
1477 const char* name = nullptr;
1478 if (is_primitive(java_class)) {
1479 name = type2name(primitive_type(java_class));
1480 } else {
1481 name = as_Klass(java_class)->external_name();
1482 }
1483 if (name == nullptr) {
1484 name = "<null>";
1485 }
1486 return name;
1487 }
1488
1489 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1490 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1491 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1492 return k;
1493 }
1494
1495
1496 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1497 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1498 assert(!klass->is_refined_objArray_klass(), "should not be ref or flat array klass");
1499 java_class->release_metadata_field_put(_array_klass_offset, klass);
1500 }
1501
1502
1503 BasicType java_lang_Class::primitive_type(oop java_class) {
1504 assert(is_primitive(java_class), "just checking");
1505 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1506 BasicType type = T_VOID;
1507 if (ak != nullptr) {
1508 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1509 type = ArrayKlass::cast(ak)->element_type();
1510 } else {
1511 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1512 }
1513 #ifdef ASSERT
1514 if (CDSConfig::is_dumping_heap()) {
1515 oop mirror = Universe::java_mirror(type);
1516 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1517 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1518 } else {
1519 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1520 }
1521 #endif
1522 return type;
1523 }
1524
1525 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1526 assert(is_instance(java_class), "must be a Class object");
1527 if (is_primitive(java_class)) {
1528 if (reference_klass != nullptr)
1529 (*reference_klass) = nullptr;
1530 return primitive_type(java_class);
1531 } else {
1532 if (reference_klass != nullptr)
1533 (*reference_klass) = as_Klass(java_class);
1534 return T_OBJECT;
1535 }
1536 }
1537
1538
1539 oop java_lang_Class::primitive_mirror(BasicType t) {
1540 oop mirror = Universe::java_mirror(t);
1541 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1542 assert(is_primitive(mirror), "must be primitive");
1543 return mirror;
1544 }
1545
1546 #define CLASS_FIELDS_DO(macro) \
1547 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1548 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1549 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1550 macro(_module_offset, k, "module", module_signature, false); \
1551 macro(_name_offset, k, "name", string_signature, false); \
1552 macro(_classData_offset, k, "classData", object_signature, false); \
1553 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1554 macro(_signers_offset, k, "signers", object_array_signature, false); \
1555 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), char_signature, false); \
1556 macro(_raw_access_flags_offset, k, "classFileAccessFlags", char_signature, false); \
1557 macro(_protection_domain_offset, k, "protectionDomain", java_security_ProtectionDomain_signature, false); \
1558 macro(_is_primitive_offset, k, "primitive", bool_signature, false);
1559
1560 void java_lang_Class::compute_offsets() {
1561 if (_offsets_computed) {
1562 return;
1563 }
1564
1565 _offsets_computed = true;
1566
1567 InstanceKlass* k = vmClasses::Class_klass();
1568 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1569 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1570 }
1571
1572 #if INCLUDE_CDS
1573 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1574 f->do_bool(&_offsets_computed);
1575
1576 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1577
1578 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1579 }
1580 #endif
1581
1582 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1583 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1584 return the_class_mirror->int_field(_classRedefinedCount_offset);
1585 }
1586
1587 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1588 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1589 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1590 }
1591
1592 int java_lang_Class::modifiers(oop the_class_mirror) {
1593 assert(_modifiers_offset != 0, "offsets should have been initialized");
1594 return the_class_mirror->char_field(_modifiers_offset);
1595 }
1596
1597 void java_lang_Class::set_modifiers(oop the_class_mirror, u2 value) {
1598 assert(_modifiers_offset != 0, "offsets should have been initialized");
1599 the_class_mirror->char_field_put(_modifiers_offset, value);
1600 }
1601
1602 int java_lang_Class::raw_access_flags(oop the_class_mirror) {
1603 assert(_raw_access_flags_offset != 0, "offsets should have been initialized");
1604 return the_class_mirror->char_field(_raw_access_flags_offset);
1605 }
1606
1607 void java_lang_Class::set_raw_access_flags(oop the_class_mirror, u2 value) {
1608 assert(_raw_access_flags_offset != 0, "offsets should have been initialized");
1609 the_class_mirror->char_field_put(_raw_access_flags_offset, value);
1610 }
1611
1612
1613 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1614 // platform thread structure, and a eetop offset which was used for thread
1615 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1616 // merged, so in the HotSpot VM we just use the eetop field for the thread
1617 // instead of the privateInfo_offset.
1618 //
1619 // Note: The stackSize field is only present starting in 1.4.
1620
1621 int java_lang_Thread_FieldHolder::_group_offset;
1622 int java_lang_Thread_FieldHolder::_priority_offset;
1623 int java_lang_Thread_FieldHolder::_stackSize_offset;
1624 int java_lang_Thread_FieldHolder::_daemon_offset;
1625 int java_lang_Thread_FieldHolder::_thread_status_offset;
1626
1627 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1628 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1629 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1630 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1631 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1632 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1633
1634 void java_lang_Thread_FieldHolder::compute_offsets() {
1635 assert(_group_offset == 0, "offsets should be initialized only once");
1636
1637 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1638 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1639 }
1640
1641 #if INCLUDE_CDS
1642 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1643 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1644 }
1645 #endif
1646
1647 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1648 return holder->obj_field(_group_offset);
1649 }
1650
1651 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1652 return (ThreadPriority)holder->int_field(_priority_offset);
1653 }
1654
1655 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1656 holder->int_field_put(_priority_offset, priority);
1657 }
1658
1659 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1660 return holder->long_field(_stackSize_offset);
1661 }
1662
1663 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1664 return holder->bool_field(_daemon_offset) != 0;
1665 }
1666
1667 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1668 assert(val, "daemon status is never turned off");
1669 holder->bool_field_put(_daemon_offset, val);
1670 }
1671
1672 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1673 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1674 }
1675
1676 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1677 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1678 }
1679
1680
1681 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1682
1683 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1684 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1685
1686 void java_lang_Thread_Constants::compute_offsets() {
1687 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1688
1689 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1690 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1691 }
1692
1693 #if INCLUDE_CDS
1694 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1695 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1696 }
1697 #endif
1698
1699 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1700 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1701 oop base = k->static_field_base_raw();
1702 return base->obj_field(_static_VTHREAD_GROUP_offset);
1703 }
1704
1705
1706 int java_lang_Thread::_holder_offset;
1707 int java_lang_Thread::_name_offset;
1708 int java_lang_Thread::_contextClassLoader_offset;
1709 int java_lang_Thread::_eetop_offset;
1710 int java_lang_Thread::_jvmti_thread_state_offset;
1711 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1712 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1713 int java_lang_Thread::_interrupted_offset;
1714 int java_lang_Thread::_interruptLock_offset;
1715 int java_lang_Thread::_tid_offset;
1716 int java_lang_Thread::_continuation_offset;
1717 int java_lang_Thread::_park_blocker_offset;
1718 int java_lang_Thread::_scopedValueBindings_offset;
1719 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1720
1721 #define THREAD_FIELDS_DO(macro) \
1722 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1723 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1724 macro(_contextClassLoader_offset, k, "contextClassLoader", classloader_signature, false); \
1725 macro(_eetop_offset, k, "eetop", long_signature, false); \
1726 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1727 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1728 macro(_tid_offset, k, "tid", long_signature, false); \
1729 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1730 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1731 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1732
1733 void java_lang_Thread::compute_offsets() {
1734 assert(_holder_offset == 0, "offsets should be initialized only once");
1735
1736 InstanceKlass* k = vmClasses::Thread_klass();
1737 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1738 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1739 }
1740
1741 #if INCLUDE_CDS
1742 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1743 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1744 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1745 }
1746 #endif
1747
1748 JavaThread* java_lang_Thread::thread(oop java_thread) {
1749 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1750 }
1751
1752 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1753 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1754 }
1755
1756 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1757 java_thread->address_field_put(_eetop_offset, (address)thread);
1758 }
1759
1760 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1761 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1762 }
1763
1764 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1765 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1766 }
1767
1768 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1769 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1770 }
1771
1772 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1773 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1774 }
1775
1776 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1777 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1778 int val = VTMS_transition_disable_count(java_thread);
1779 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1780 }
1781
1782 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1783 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1784 int val = VTMS_transition_disable_count(java_thread);
1785 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1786 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1787 }
1788
1789 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1790 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1791 }
1792
1793 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1794 assert(is_in_VTMS_transition(java_thread) != val, "already %s transition", val ? "inside" : "outside");
1795 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1796 }
1797
1798 int java_lang_Thread::is_in_VTMS_transition_offset() {
1799 return _jvmti_is_in_VTMS_transition_offset;
1800 }
1801
1802 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1803 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1804 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1805 }
1806
1807 oop java_lang_Thread::holder(oop java_thread) {
1808 // Note: may return null if the thread is still attaching
1809 return java_thread->obj_field(_holder_offset);
1810 }
1811 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1812 return java_thread->obj_field(_interruptLock_offset);
1813 }
1814
1815 bool java_lang_Thread::interrupted(oop java_thread) {
1816 // Make sure the caller can safely access oops.
1817 assert(Thread::current()->is_VM_thread() ||
1818 (JavaThread::current()->thread_state() != _thread_blocked &&
1819 JavaThread::current()->thread_state() != _thread_in_native),
1820 "Unsafe access to oop");
1821 return java_thread->bool_field_volatile(_interrupted_offset);
1822 }
1823
1824 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1825 // Make sure the caller can safely access oops.
1826 assert(Thread::current()->is_VM_thread() ||
1827 (JavaThread::current()->thread_state() != _thread_blocked &&
1828 JavaThread::current()->thread_state() != _thread_in_native),
1829 "Unsafe access to oop");
1830 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1831 }
1832
1833
1834 oop java_lang_Thread::name(oop java_thread) {
1835 return java_thread->obj_field(_name_offset);
1836 }
1837
1838
1839 void java_lang_Thread::set_name(oop java_thread, oop name) {
1840 java_thread->obj_field_put(_name_offset, name);
1841 }
1842
1843 // Convenience macros for setting and getting Thread fields that
1844 // are actually stored in the FieldHolder object of the thread.
1845 // The FieldHolder can be null whilst a thread is attaching via
1846 // JNI, and when the main thread is attaching.
1847
1848 // The default value should be the default/zero initialized value
1849 // of the field as it would be in java.lang.Thread.FieldHolder.
1850 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1851 { \
1852 oop holder = java_lang_Thread::holder(java_thread); \
1853 if (holder != nullptr) \
1854 return java_lang_Thread_FieldHolder::field(holder); \
1855 else \
1856 return default_val; \
1857 }
1858
1859 // We should never be trying to set a field of an attaching thread.
1860 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1861 { \
1862 oop holder = java_lang_Thread::holder(java_thread); \
1863 assert(holder != nullptr, "Thread not fully initialized"); \
1864 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1865 }
1866
1867
1868 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1869 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1870 }
1871
1872
1873 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1874 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1875 }
1876
1877
1878 oop java_lang_Thread::threadGroup(oop java_thread) {
1879 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1880 }
1881
1882
1883 bool java_lang_Thread::is_alive(oop java_thread) {
1884 JavaThread* thr = java_lang_Thread::thread(java_thread);
1885 return (thr != nullptr);
1886 }
1887
1888
1889 bool java_lang_Thread::is_daemon(oop java_thread) {
1890 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1891 }
1892
1893
1894 void java_lang_Thread::set_daemon(oop java_thread) {
1895 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1896 }
1897
1898 oop java_lang_Thread::context_class_loader(oop java_thread) {
1899 return java_thread->obj_field(_contextClassLoader_offset);
1900 }
1901
1902
1903 jlong java_lang_Thread::stackSize(oop java_thread) {
1904 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1905 }
1906
1907 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1908 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1909 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1910 }
1911
1912 // Read thread status value from threadStatus field in java.lang.Thread java class.
1913 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1914 // Make sure the caller is operating on behalf of the VM or is
1915 // running VM code (state == _thread_in_vm).
1916 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1917 JavaThread::current()->thread_state() == _thread_in_vm ||
1918 JavaThread::current() == java_lang_Thread::thread(java_thread),
1919 "unsafe call to java_lang_Thread::get_thread_status()?");
1920 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1921 }
1922
1923 ByteSize java_lang_Thread::thread_id_offset() {
1924 return in_ByteSize(_tid_offset);
1925 }
1926
1927 oop java_lang_Thread::park_blocker(oop java_thread) {
1928 return java_thread->obj_field_access<MO_RELAXED>(_park_blocker_offset);
1929 }
1930
1931 // Obtain stack trace for platform or mounted virtual thread.
1932 // If jthread is a virtual thread and it has been unmounted (or remounted to different carrier) the method returns null.
1933 // The caller (java.lang.VirtualThread) handles returned nulls via retry.
1934 oop java_lang_Thread::async_get_stack_trace(jobject jthread, TRAPS) {
1935 ThreadsListHandle tlh(THREAD);
1936 JavaThread* java_thread = nullptr;
1937 oop thread_oop;
1938
1939 bool has_java_thread = tlh.cv_internal_thread_to_JavaThread(jthread, &java_thread, &thread_oop);
1940 if (!has_java_thread) {
1941 return nullptr;
1942 }
1943
1944 class GetStackTraceHandshakeClosure : public HandshakeClosure {
1945 public:
1946 const Handle _thread_h;
1947 int _depth;
1948 bool _retry_handshake;
1949 GrowableArray<Method*>* _methods;
1950 GrowableArray<int>* _bcis;
1951
1952 GetStackTraceHandshakeClosure(Handle thread_h) :
1953 HandshakeClosure("GetStackTraceHandshakeClosure"), _thread_h(thread_h), _depth(0), _retry_handshake(false),
1954 _methods(nullptr), _bcis(nullptr) {
1955 }
1956 ~GetStackTraceHandshakeClosure() {
1957 delete _methods;
1958 delete _bcis;
1959 }
1960
1961 bool read_reset_retry() {
1962 bool ret = _retry_handshake;
1963 // If we re-execute the handshake this method need to return false
1964 // when the handshake cannot be performed. (E.g. thread terminating)
1965 _retry_handshake = false;
1966 return ret;
1967 }
1968
1969 void do_thread(Thread* th) {
1970 if (!Thread::current()->is_Java_thread()) {
1971 _retry_handshake = true;
1972 return;
1973 }
1974
1975 JavaThread* java_thread = JavaThread::cast(th);
1976
1977 if (!java_thread->has_last_Java_frame()) {
1978 return;
1979 }
1980
1981 bool carrier = false;
1982 if (java_lang_VirtualThread::is_instance(_thread_h())) {
1983 // Ensure _thread_h is still mounted to java_thread.
1984 const ContinuationEntry* ce = java_thread->vthread_continuation();
1985 if (ce == nullptr || ce->cont_oop(java_thread) != java_lang_VirtualThread::continuation(_thread_h())) {
1986 // Target thread has been unmounted.
1987 return;
1988 }
1989 } else {
1990 carrier = (java_thread->vthread_continuation() != nullptr);
1991 }
1992
1993 const int max_depth = MaxJavaStackTraceDepth;
1994 const bool skip_hidden = !ShowHiddenFrames;
1995
1996 // Pick minimum length that will cover most cases
1997 int init_length = 64;
1998 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1999 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
2000
2001 int total_count = 0;
2002 for (vframeStream vfst(java_thread, false, false, carrier); // we don't process frames as we don't care about oops
2003 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
2004 vfst.next()) {
2005
2006 if (skip_hidden && (vfst.method()->is_hidden() ||
2007 vfst.method()->is_continuation_enter_intrinsic())) {
2008 continue;
2009 }
2010
2011 _methods->push(vfst.method());
2012 _bcis->push(vfst.bci());
2013 total_count++;
2014 }
2015
2016 _depth = total_count;
2017 }
2018 };
2019
2020 // Handshake with target
2021 ResourceMark rm(THREAD);
2022 HandleMark hm(THREAD);
2023 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
2024 do {
2025 Handshake::execute(&gsthc, &tlh, java_thread);
2026 } while (gsthc.read_reset_retry());
2027
2028 // Stop if no stack trace is found.
2029 if (gsthc._depth == 0) {
2030 return nullptr;
2031 }
2032
2033 // Convert to StackTraceElement array
2034 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2035 assert(k != nullptr, "must be loaded in 1.4+");
2036 if (k->should_be_initialized()) {
2037 k->initialize(CHECK_NULL);
2038 }
2039 objArrayHandle trace = oopFactory::new_objArray_handle(k, gsthc._depth, CHECK_NULL);
2040
2041 for (int i = 0; i < gsthc._depth; i++) {
2042 methodHandle method(THREAD, gsthc._methods->at(i));
2043 oop element = java_lang_StackTraceElement::create(method,
2044 gsthc._bcis->at(i),
2045 CHECK_NULL);
2046 trace->obj_at_put(i, element);
2047 }
2048
2049 return trace();
2050 }
2051
2052 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2053 JavaThreadStatus status = get_thread_status(java_thread);
2054 switch (status) {
2055 case JavaThreadStatus::NEW : return "NEW";
2056 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2057 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2058 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2059 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2060 case JavaThreadStatus::PARKED : return "WAITING (parking)";
2061 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
2062 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
2063 case JavaThreadStatus::TERMINATED : return "TERMINATED";
2064 default : return "UNKNOWN";
2065 };
2066 }
2067 int java_lang_ThreadGroup::_parent_offset;
2068 int java_lang_ThreadGroup::_name_offset;
2069 int java_lang_ThreadGroup::_maxPriority_offset;
2070 int java_lang_ThreadGroup::_daemon_offset;
2071
2072 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
2073 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2074 return java_thread_group->obj_field(_parent_offset);
2075 }
2076
2077 // ("name as oop" accessor is not necessary)
2078
2079 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
2080 oop name = java_thread_group->obj_field(_name_offset);
2081 // ThreadGroup.name can be null
2082 if (name != nullptr) {
2083 return java_lang_String::as_utf8_string(name);
2084 }
2085 return nullptr;
2086 }
2087
2088 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
2089 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2090 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
2091 }
2092
2093 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
2094 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2095 return java_thread_group->bool_field(_daemon_offset) != 0;
2096 }
2097
2098 #define THREADGROUP_FIELDS_DO(macro) \
2099 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
2100 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2101 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
2102 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
2103
2104 void java_lang_ThreadGroup::compute_offsets() {
2105 assert(_parent_offset == 0, "offsets should be initialized only once");
2106
2107 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2108 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2109 }
2110
2111 #if INCLUDE_CDS
2112 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2113 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2114 }
2115 #endif
2116
2117
2118 // java_lang_VirtualThread
2119
2120 int java_lang_VirtualThread::static_vthread_scope_offset;
2121 int java_lang_VirtualThread::_carrierThread_offset;
2122 int java_lang_VirtualThread::_continuation_offset;
2123 int java_lang_VirtualThread::_state_offset;
2124 int java_lang_VirtualThread::_next_offset;
2125 int java_lang_VirtualThread::_onWaitingList_offset;
2126 int java_lang_VirtualThread::_notified_offset;
2127 int java_lang_VirtualThread::_timeout_offset;
2128 int java_lang_VirtualThread::_objectWaiter_offset;
2129
2130 #define VTHREAD_FIELDS_DO(macro) \
2131 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
2132 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
2133 macro(_continuation_offset, k, "cont", continuation_signature, false); \
2134 macro(_state_offset, k, "state", int_signature, false); \
2135 macro(_next_offset, k, "next", vthread_signature, false); \
2136 macro(_onWaitingList_offset, k, "onWaitingList", bool_signature, false); \
2137 macro(_notified_offset, k, "notified", bool_signature, false); \
2138 macro(_timeout_offset, k, "timeout", long_signature, false);
2139
2140
2141 void java_lang_VirtualThread::compute_offsets() {
2142 InstanceKlass* k = vmClasses::VirtualThread_klass();
2143 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2144 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2145 }
2146
2147 bool java_lang_VirtualThread::is_instance(oop obj) {
2148 return obj != nullptr && is_subclass(obj->klass());
2149 }
2150
2151 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2152 oop thread = vthread->obj_field(_carrierThread_offset);
2153 return thread;
2154 }
2155
2156 oop java_lang_VirtualThread::continuation(oop vthread) {
2157 oop cont = vthread->obj_field(_continuation_offset);
2158 return cont;
2159 }
2160
2161 int java_lang_VirtualThread::state(oop vthread) {
2162 return vthread->int_field_acquire(_state_offset);
2163 }
2164
2165 void java_lang_VirtualThread::set_state(oop vthread, int state) {
2166 vthread->release_int_field_put(_state_offset, state);
2167 }
2168
2169 int java_lang_VirtualThread::cmpxchg_state(oop vthread, int old_state, int new_state) {
2170 jint* addr = vthread->field_addr<jint>(_state_offset);
2171 int res = Atomic::cmpxchg(addr, old_state, new_state);
2172 return res;
2173 }
2174
2175 oop java_lang_VirtualThread::next(oop vthread) {
2176 return vthread->obj_field(_next_offset);
2177 }
2178
2179 void java_lang_VirtualThread::set_next(oop vthread, oop next_vthread) {
2180 vthread->obj_field_put(_next_offset, next_vthread);
2181 }
2182
2183 // Add vthread to the waiting list if it's not already in it. Multiple threads
2184 // could be trying to add vthread to the list at the same time, so we control
2185 // access with a cmpxchg on onWaitingList. The winner adds vthread to the list.
2186 // Method returns true if we added vthread to the list, false otherwise.
2187 bool java_lang_VirtualThread::set_onWaitingList(oop vthread, OopHandle& list_head) {
2188 jboolean* addr = vthread->field_addr<jboolean>(_onWaitingList_offset);
2189 jboolean vthread_on_list = Atomic::load(addr);
2190 if (!vthread_on_list) {
2191 vthread_on_list = Atomic::cmpxchg(addr, (jboolean)JNI_FALSE, (jboolean)JNI_TRUE);
2192 if (!vthread_on_list) {
2193 for (;;) {
2194 oop head = list_head.resolve();
2195 java_lang_VirtualThread::set_next(vthread, head);
2196 if (list_head.cmpxchg(head, vthread) == head) return true;
2197 }
2198 }
2199 }
2200 return false; // already on waiting list
2201 }
2202
2203 void java_lang_VirtualThread::set_notified(oop vthread, jboolean value) {
2204 vthread->bool_field_put_volatile(_notified_offset, value);
2205 }
2206
2207 jlong java_lang_VirtualThread::timeout(oop vthread) {
2208 return vthread->long_field(_timeout_offset);
2209 }
2210
2211 void java_lang_VirtualThread::set_timeout(oop vthread, jlong value) {
2212 vthread->long_field_put(_timeout_offset, value);
2213 }
2214
2215 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2216 JavaThreadStatus status = JavaThreadStatus::NEW;
2217 switch (state & ~SUSPENDED) {
2218 case NEW:
2219 status = JavaThreadStatus::NEW;
2220 break;
2221 case STARTED:
2222 case RUNNING:
2223 case PARKING:
2224 case TIMED_PARKING:
2225 case UNPARKED:
2226 case YIELDING:
2227 case YIELDED:
2228 case UNBLOCKED:
2229 case WAITING:
2230 case TIMED_WAITING:
2231 status = JavaThreadStatus::RUNNABLE;
2232 break;
2233 case PARKED:
2234 case PINNED:
2235 status = JavaThreadStatus::PARKED;
2236 break;
2237 case TIMED_PARKED:
2238 case TIMED_PINNED:
2239 status = JavaThreadStatus::PARKED_TIMED;
2240 break;
2241 case BLOCKING:
2242 case BLOCKED:
2243 status = JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER;
2244 break;
2245 case WAIT:
2246 status = JavaThreadStatus::IN_OBJECT_WAIT;
2247 break;
2248 case TIMED_WAIT:
2249 status = JavaThreadStatus::IN_OBJECT_WAIT_TIMED;
2250 break;
2251 case TERMINATED:
2252 status = JavaThreadStatus::TERMINATED;
2253 break;
2254 default:
2255 ShouldNotReachHere();
2256 }
2257 return status;
2258 }
2259
2260 ObjectMonitor* java_lang_VirtualThread::current_pending_monitor(oop vthread) {
2261 ObjectWaiter* waiter = objectWaiter(vthread);
2262 if (waiter != nullptr && waiter->at_monitorenter()) {
2263 return waiter->monitor();
2264 }
2265 return nullptr;
2266 }
2267
2268 ObjectMonitor* java_lang_VirtualThread::current_waiting_monitor(oop vthread) {
2269 ObjectWaiter* waiter = objectWaiter(vthread);
2270 if (waiter != nullptr && waiter->is_wait()) {
2271 return waiter->monitor();
2272 }
2273 return nullptr;
2274 }
2275
2276 bool java_lang_VirtualThread::is_preempted(oop vthread) {
2277 oop continuation = java_lang_VirtualThread::continuation(vthread);
2278 assert(continuation != nullptr, "vthread with no continuation");
2279 stackChunkOop chunk = jdk_internal_vm_Continuation::tail(continuation);
2280 return chunk != nullptr && chunk->preempted();
2281 }
2282
2283 #if INCLUDE_CDS
2284 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2285 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2286 VTHREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2287 }
2288 #endif
2289
2290 // java_lang_Throwable
2291
2292 int java_lang_Throwable::_backtrace_offset;
2293 int java_lang_Throwable::_detailMessage_offset;
2294 int java_lang_Throwable::_stackTrace_offset;
2295 int java_lang_Throwable::_depth_offset;
2296 int java_lang_Throwable::_cause_offset;
2297 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2298
2299 #define THROWABLE_FIELDS_DO(macro) \
2300 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2301 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2302 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2303 macro(_depth_offset, k, "depth", int_signature, false); \
2304 macro(_cause_offset, k, "cause", throwable_signature, false); \
2305 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2306
2307 void java_lang_Throwable::compute_offsets() {
2308 InstanceKlass* k = vmClasses::Throwable_klass();
2309 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2310 }
2311
2312 #if INCLUDE_CDS
2313 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2314 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2315 }
2316 #endif
2317
2318 oop java_lang_Throwable::unassigned_stacktrace() {
2319 InstanceKlass* ik = vmClasses::Throwable_klass();
2320 oop base = ik->static_field_base_raw();
2321 return base->obj_field(_static_unassigned_stacktrace_offset);
2322 }
2323
2324 oop java_lang_Throwable::backtrace(oop throwable) {
2325 return throwable->obj_field_acquire(_backtrace_offset);
2326 }
2327
2328
2329 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2330 throwable->release_obj_field_put(_backtrace_offset, value);
2331 }
2332
2333 int java_lang_Throwable::depth(oop throwable) {
2334 return throwable->int_field(_depth_offset);
2335 }
2336
2337 void java_lang_Throwable::set_depth(oop throwable, int value) {
2338 throwable->int_field_put(_depth_offset, value);
2339 }
2340
2341 oop java_lang_Throwable::message(oop throwable) {
2342 return throwable->obj_field(_detailMessage_offset);
2343 }
2344
2345 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2346 oop msg = java_lang_Throwable::message(throwable);
2347 const char* msg_utf8 = nullptr;
2348 if (msg != nullptr) {
2349 msg_utf8 = java_lang_String::as_utf8_string(msg);
2350 }
2351 return msg_utf8;
2352 }
2353
2354 oop java_lang_Throwable::cause(oop throwable) {
2355 return throwable->obj_field(_cause_offset);
2356 }
2357
2358 void java_lang_Throwable::set_message(oop throwable, oop value) {
2359 throwable->obj_field_put(_detailMessage_offset, value);
2360 }
2361
2362
2363 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2364 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2365 }
2366
2367 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2368 set_stacktrace(throwable, nullptr);
2369 }
2370
2371
2372 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2373 ResourceMark rm;
2374 Klass* k = throwable->klass();
2375 assert(k != nullptr, "just checking");
2376 st->print("%s", k->external_name());
2377 oop msg = message(throwable);
2378 if (msg != nullptr) {
2379 st->print(": %s", java_lang_String::as_utf8_string(msg));
2380 }
2381 }
2382
2383 // After this many redefines, the stack trace is unreliable.
2384 const int MAX_VERSION = USHRT_MAX;
2385
2386 static inline bool version_matches(Method* method, int version) {
2387 assert(version < MAX_VERSION, "version is too big");
2388 return method != nullptr && (method->constants()->version() == version);
2389 }
2390
2391 // This class provides a simple wrapper over the internal structure of
2392 // exception backtrace to insulate users of the backtrace from needing
2393 // to know what it looks like.
2394 // The code of this class is not GC safe. Allocations can only happen
2395 // in expand().
2396 class BacktraceBuilder: public StackObj {
2397 friend class BacktraceIterator;
2398 private:
2399 Handle _backtrace;
2400 objArrayOop _head;
2401 typeArrayOop _methods;
2402 typeArrayOop _bcis;
2403 objArrayOop _mirrors;
2404 typeArrayOop _names; // Needed to insulate method name against redefinition.
2405 // True if the top frame of the backtrace is omitted because it shall be hidden.
2406 bool _has_hidden_top_frame;
2407 int _index;
2408 NoSafepointVerifier _nsv;
2409
2410 enum {
2411 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2412 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2413 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2414 trace_names_offset = java_lang_Throwable::trace_names_offset,
2415 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2416 trace_next_offset = java_lang_Throwable::trace_next_offset,
2417 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2418 trace_size = java_lang_Throwable::trace_size,
2419 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2420 };
2421
2422 // get info out of chunks
2423 static typeArrayOop get_methods(objArrayHandle chunk) {
2424 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2425 assert(methods != nullptr, "method array should be initialized in backtrace");
2426 return methods;
2427 }
2428 static typeArrayOop get_bcis(objArrayHandle chunk) {
2429 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2430 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2431 return bcis;
2432 }
2433 static objArrayOop get_mirrors(objArrayHandle chunk) {
2434 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2435 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2436 return mirrors;
2437 }
2438 static typeArrayOop get_names(objArrayHandle chunk) {
2439 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2440 assert(names != nullptr, "names array should be initialized in backtrace");
2441 return names;
2442 }
2443 static bool has_hidden_top_frame(objArrayHandle chunk) {
2444 oop hidden = chunk->obj_at(trace_hidden_offset);
2445 return hidden != nullptr;
2446 }
2447
2448 public:
2449
2450 // constructor for new backtrace
2451 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2452 expand(CHECK);
2453 _backtrace = Handle(THREAD, _head);
2454 _index = 0;
2455 }
2456
2457 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2458 _methods = get_methods(backtrace);
2459 _bcis = get_bcis(backtrace);
2460 _mirrors = get_mirrors(backtrace);
2461 _names = get_names(backtrace);
2462 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2463 assert(_methods->length() == _bcis->length() &&
2464 _methods->length() == _mirrors->length() &&
2465 _mirrors->length() == _names->length(),
2466 "method and source information arrays should match");
2467
2468 // head is the preallocated backtrace
2469 _head = backtrace();
2470 _backtrace = Handle(thread, _head);
2471 _index = 0;
2472 }
2473
2474 void expand(TRAPS) {
2475 objArrayHandle old_head(THREAD, _head);
2476 PauseNoSafepointVerifier pnsv(&_nsv);
2477
2478 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2479 objArrayHandle new_head(THREAD, head);
2480
2481 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2482 typeArrayHandle new_methods(THREAD, methods);
2483
2484 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2485 typeArrayHandle new_bcis(THREAD, bcis);
2486
2487 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2488 objArrayHandle new_mirrors(THREAD, mirrors);
2489
2490 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2491 typeArrayHandle new_names(THREAD, names);
2492
2493 if (!old_head.is_null()) {
2494 old_head->obj_at_put(trace_next_offset, new_head());
2495 }
2496 new_head->obj_at_put(trace_methods_offset, new_methods());
2497 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2498 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2499 new_head->obj_at_put(trace_names_offset, new_names());
2500 new_head->obj_at_put(trace_hidden_offset, nullptr);
2501
2502 _head = new_head();
2503 _methods = new_methods();
2504 _bcis = new_bcis();
2505 _mirrors = new_mirrors();
2506 _names = new_names();
2507 _index = 0;
2508 }
2509
2510 oop backtrace() {
2511 return _backtrace();
2512 }
2513
2514 inline void push(Method* method, int bci, TRAPS) {
2515 // Smear the -1 bci to 0 since the array only holds unsigned
2516 // shorts. The later line number lookup would just smear the -1
2517 // to a 0 even if it could be recorded.
2518 if (bci == SynchronizationEntryBCI) bci = 0;
2519
2520 if (_index >= trace_chunk_size) {
2521 methodHandle mhandle(THREAD, method);
2522 expand(CHECK);
2523 method = mhandle();
2524 }
2525
2526 _methods->ushort_at_put(_index, method->orig_method_idnum());
2527 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2528
2529 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2530 // klass owning the symbols alive so their refcounts aren't decremented.
2531 Symbol* name = method->name();
2532 _names->symbol_at_put(_index, name);
2533
2534 // We need to save the mirrors in the backtrace to keep the class
2535 // from being unloaded while we still have this stack trace.
2536 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2537 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2538
2539 _index++;
2540 }
2541
2542 void set_has_hidden_top_frame() {
2543 if (!_has_hidden_top_frame) {
2544 // It would be nice to add java/lang/Boolean::TRUE here
2545 // to indicate that this backtrace has a hidden top frame.
2546 // But this code is used before TRUE is allocated.
2547 // Therefore let's just use an arbitrary legal oop
2548 // available right here. _methods is a short[].
2549 assert(_methods != nullptr, "we need a legal oop");
2550 _has_hidden_top_frame = true;
2551 _head->obj_at_put(trace_hidden_offset, _methods);
2552 }
2553 }
2554 };
2555
2556 struct BacktraceElement : public StackObj {
2557 int _method_id;
2558 int _bci;
2559 int _version;
2560 Symbol* _name;
2561 Handle _mirror;
2562 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2563 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2564 };
2565
2566 class BacktraceIterator : public StackObj {
2567 int _index;
2568 objArrayHandle _result;
2569 objArrayHandle _mirrors;
2570 typeArrayHandle _methods;
2571 typeArrayHandle _bcis;
2572 typeArrayHandle _names;
2573
2574 void init(objArrayHandle result, Thread* thread) {
2575 // Get method id, bci, version and mirror from chunk
2576 _result = result;
2577 if (_result.not_null()) {
2578 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2579 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2580 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2581 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2582 _index = 0;
2583 }
2584 }
2585 public:
2586 BacktraceIterator(objArrayHandle result, Thread* thread) {
2587 init(result, thread);
2588 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2589 }
2590
2591 BacktraceElement next(Thread* thread) {
2592 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2593 _methods->ushort_at(_index),
2594 Backtrace::version_at(_bcis->int_at(_index)),
2595 Backtrace::bci_at(_bcis->int_at(_index)),
2596 _names->symbol_at(_index));
2597 _index++;
2598
2599 if (_index >= java_lang_Throwable::trace_chunk_size) {
2600 int next_offset = java_lang_Throwable::trace_next_offset;
2601 // Get next chunk
2602 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2603 init(result, thread);
2604 }
2605 return e;
2606 }
2607
2608 bool repeat() {
2609 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2610 }
2611 };
2612
2613
2614 // Print stack trace element to resource allocated buffer
2615 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2616 int version, int bci, Symbol* name) {
2617 ResourceMark rm;
2618
2619 // Get strings and string lengths
2620 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2621 const char* klass_name = holder->external_name();
2622 int buf_len = (int)strlen(klass_name);
2623
2624 char* method_name = name->as_C_string();
2625 buf_len += (int)strlen(method_name);
2626
2627 char* source_file_name = nullptr;
2628 Symbol* source = Backtrace::get_source_file_name(holder, version);
2629 if (source != nullptr) {
2630 source_file_name = source->as_C_string();
2631 buf_len += (int)strlen(source_file_name);
2632 }
2633
2634 char *module_name = nullptr, *module_version = nullptr;
2635 ModuleEntry* module = holder->module();
2636 if (module->is_named()) {
2637 module_name = module->name()->as_C_string();
2638 buf_len += (int)strlen(module_name);
2639 if (module->version() != nullptr) {
2640 module_version = module->version()->as_C_string();
2641 buf_len += (int)strlen(module_version);
2642 }
2643 }
2644
2645 // Allocate temporary buffer with extra space for formatting and line number
2646 const size_t buf_size = buf_len + 64;
2647 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2648
2649 // Print stack trace line in buffer
2650 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2651
2652 // Print module information
2653 if (module_name != nullptr) {
2654 if (module_version != nullptr) {
2655 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2656 } else {
2657 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2658 }
2659 }
2660
2661 // The method can be null if the requested class version is gone
2662 Method* method = holder->method_with_orig_idnum(method_id, version);
2663 if (!version_matches(method, version)) {
2664 strcat(buf, "Redefined)");
2665 } else {
2666 int line_number = Backtrace::get_line_number(method, bci);
2667 if (line_number == -2) {
2668 strcat(buf, "Native Method)");
2669 } else {
2670 if (source_file_name != nullptr && (line_number != -1)) {
2671 // Sourcename and linenumber
2672 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2673 } else if (source_file_name != nullptr) {
2674 // Just sourcename
2675 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2676 } else {
2677 // Neither sourcename nor linenumber
2678 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2679 }
2680 nmethod* nm = method->code();
2681 if (WizardMode && nm != nullptr) {
2682 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2683 }
2684 }
2685 }
2686
2687 st->print_cr("%s", buf);
2688 }
2689
2690 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2691 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2692 int method_id = method->orig_method_idnum();
2693 int version = method->constants()->version();
2694 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2695 }
2696
2697 /**
2698 * Print the throwable message and its stack trace plus all causes by walking the
2699 * cause chain. The output looks the same as of Throwable.printStackTrace().
2700 */
2701 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2702 // First, print the message.
2703 print(throwable(), st);
2704 st->cr();
2705
2706 // Now print the stack trace.
2707 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2708 while (throwable.not_null()) {
2709 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2710 if (result.is_null()) {
2711 st->print_raw_cr("\t<<no stack trace available>>");
2712 return;
2713 }
2714 BacktraceIterator iter(result, THREAD);
2715
2716 while (iter.repeat()) {
2717 BacktraceElement bte = iter.next(THREAD);
2718 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2719 }
2720 if (THREAD->can_call_java()) {
2721 // Call getCause() which doesn't necessarily return the _cause field.
2722 ExceptionMark em(THREAD);
2723 JavaValue cause(T_OBJECT);
2724 JavaCalls::call_virtual(&cause,
2725 throwable,
2726 throwable->klass(),
2727 vmSymbols::getCause_name(),
2728 vmSymbols::void_throwable_signature(),
2729 THREAD);
2730 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2731 if (HAS_PENDING_EXCEPTION) {
2732 CLEAR_PENDING_EXCEPTION;
2733 throwable = Handle();
2734 } else {
2735 throwable = Handle(THREAD, cause.get_oop());
2736 if (throwable.not_null()) {
2737 st->print("Caused by: ");
2738 print(throwable(), st);
2739 st->cr();
2740 }
2741 }
2742 } else {
2743 st->print_raw_cr("<<cannot call Java to get cause>>");
2744 return;
2745 }
2746 }
2747 }
2748
2749 /**
2750 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2751 */
2752 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2753 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2754 JavaValue result(T_VOID);
2755 JavaCalls::call_virtual(&result,
2756 throwable,
2757 vmClasses::Throwable_klass(),
2758 vmSymbols::printStackTrace_name(),
2759 vmSymbols::void_method_signature(),
2760 THREAD);
2761 }
2762
2763 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2764 if (!StackTraceInThrowable) return;
2765 ResourceMark rm(THREAD);
2766
2767 // Start out by clearing the backtrace for this object, in case the VM
2768 // runs out of memory while allocating the stack trace
2769 set_backtrace(throwable(), nullptr);
2770 // Clear lazily constructed Java level stacktrace if refilling occurs
2771 // This is unnecessary in 1.7+ but harmless
2772 clear_stacktrace(throwable());
2773
2774 int max_depth = MaxJavaStackTraceDepth;
2775 JavaThread* thread = THREAD;
2776
2777 BacktraceBuilder bt(CHECK);
2778
2779 // If there is no Java frame just return the method that was being called
2780 // with bci 0
2781 if (!thread->has_last_Java_frame()) {
2782 if (max_depth >= 1 && method() != nullptr) {
2783 bt.push(method(), 0, CHECK);
2784 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2785 set_depth(throwable(), 1);
2786 set_backtrace(throwable(), bt.backtrace());
2787 }
2788 return;
2789 }
2790
2791 // Instead of using vframe directly, this version of fill_in_stack_trace
2792 // basically handles everything by hand. This significantly improved the
2793 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2794 // See bug 6333838 for more details.
2795 // The "ASSERT" here is to verify this method generates the exactly same stack
2796 // trace as utilizing vframe.
2797 #ifdef ASSERT
2798 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2799 #endif
2800 int total_count = 0;
2801 RegisterMap map(thread,
2802 RegisterMap::UpdateMap::skip,
2803 RegisterMap::ProcessFrames::skip,
2804 RegisterMap::WalkContinuation::include);
2805 int decode_offset = 0;
2806 nmethod* nm = nullptr;
2807 bool skip_fillInStackTrace_check = false;
2808 bool skip_throwableInit_check = false;
2809 bool skip_hidden = !ShowHiddenFrames;
2810 bool show_carrier = ShowCarrierFrames;
2811 ContinuationEntry* cont_entry = thread->last_continuation();
2812 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2813 Method* method = nullptr;
2814 int bci = 0;
2815
2816 // Compiled java method case.
2817 if (decode_offset != 0) {
2818 DebugInfoReadStream stream(nm, decode_offset);
2819 decode_offset = stream.read_int();
2820 method = (Method*)nm->metadata_at(stream.read_int());
2821 bci = stream.read_bci();
2822 } else {
2823 if (fr.is_first_frame()) break;
2824
2825 if (Continuation::is_continuation_enterSpecial(fr)) {
2826 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2827 if (!show_carrier && cont_entry->is_virtual_thread()) {
2828 break;
2829 }
2830 cont_entry = cont_entry->parent();
2831 }
2832
2833 address pc = fr.pc();
2834 if (fr.is_interpreted_frame()) {
2835 address bcp;
2836 if (!map.in_cont()) {
2837 bcp = fr.interpreter_frame_bcp();
2838 method = fr.interpreter_frame_method();
2839 } else {
2840 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2841 method = map.stack_chunk()->interpreter_frame_method(fr);
2842 }
2843 bci = method->bci_from(bcp);
2844 fr = fr.sender(&map);
2845 } else {
2846 CodeBlob* cb = fr.cb();
2847 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2848 // but non nmethod
2849 fr = fr.sender(&map);
2850 if (cb == nullptr || !cb->is_nmethod()) {
2851 continue;
2852 }
2853 nm = cb->as_nmethod();
2854 assert(nm->method() != nullptr, "must be");
2855 if (nm->method()->is_native()) {
2856 method = nm->method();
2857 bci = 0;
2858 } else {
2859 PcDesc* pd = nm->pc_desc_at(pc);
2860 decode_offset = pd->scope_decode_offset();
2861 // if decode_offset is not equal to 0, it will execute the
2862 // "compiled java method case" at the beginning of the loop.
2863 continue;
2864 }
2865 }
2866 }
2867 #ifdef ASSERT
2868 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2869 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2870 st.next();
2871 }
2872 #endif
2873
2874 // the format of the stacktrace will be:
2875 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2876 // - 0 or more <init> methods for the exception class (skipped)
2877 // - rest of the stack
2878
2879 if (!skip_fillInStackTrace_check) {
2880 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2881 throwable->is_a(method->method_holder())) {
2882 continue;
2883 }
2884 else {
2885 skip_fillInStackTrace_check = true; // gone past them all
2886 }
2887 }
2888 if (!skip_throwableInit_check) {
2889 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2890
2891 // skip <init> methods of the exception class and superclasses
2892 // This is similar to classic VM.
2893 if (method->is_object_constructor() &&
2894 throwable->is_a(method->method_holder())) {
2895 continue;
2896 } else {
2897 // there are none or we've seen them all - either way stop checking
2898 skip_throwableInit_check = true;
2899 }
2900 }
2901 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2902 if (skip_hidden) {
2903 if (total_count == 0) {
2904 // The top frame will be hidden from the stack trace.
2905 bt.set_has_hidden_top_frame();
2906 }
2907 continue;
2908 }
2909 }
2910
2911 bt.push(method, bci, CHECK);
2912 total_count++;
2913 }
2914
2915 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2916
2917 // Put completed stack trace into throwable object
2918 set_backtrace(throwable(), bt.backtrace());
2919 set_depth(throwable(), total_count);
2920 }
2921
2922 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2923 // No-op if stack trace is disabled
2924 if (!StackTraceInThrowable) {
2925 return;
2926 }
2927
2928 // Disable stack traces for some preallocated out of memory errors
2929 if (!Universe::should_fill_in_stack_trace(throwable)) {
2930 return;
2931 }
2932
2933 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2934 PreserveExceptionMark pm(THREAD);
2935
2936 fill_in_stack_trace(throwable, method, THREAD);
2937 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2938 // original exception via the PreserveExceptionMark destructor.
2939 CLEAR_PENDING_EXCEPTION;
2940 }
2941
2942 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2943 // Allocate stack trace - backtrace is created but not filled in
2944
2945 // No-op if stack trace is disabled
2946 if (!StackTraceInThrowable) return;
2947 BacktraceBuilder bt(CHECK); // creates a backtrace
2948 set_backtrace(throwable(), bt.backtrace());
2949 }
2950
2951
2952 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2953 // Fill in stack trace into preallocated backtrace (no GC)
2954
2955 // No-op if stack trace is disabled
2956 if (!StackTraceInThrowable) return;
2957
2958 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2959
2960 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2961
2962 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2963 assert(backtrace.not_null(), "backtrace should have been preallocated");
2964
2965 ResourceMark rm(THREAD);
2966 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2967
2968 BacktraceBuilder bt(THREAD, backtrace);
2969
2970 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2971 // methods as preallocated errors aren't created by "java" code.
2972
2973 // fill in as much stack trace as possible
2974 int chunk_count = 0;
2975 for (;!st.at_end(); st.next()) {
2976 bt.push(st.method(), st.bci(), CHECK);
2977 chunk_count++;
2978
2979 // Bail-out for deep stacks
2980 if (chunk_count >= trace_chunk_size) break;
2981 }
2982 set_depth(throwable(), chunk_count);
2983 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2984
2985 // We support the Throwable immutability protocol defined for Java 7.
2986 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2987 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2988 }
2989
2990 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2991 objArrayHandle stack_trace_array_h, TRAPS) {
2992
2993 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2994 THROW(vmSymbols::java_lang_NullPointerException());
2995 }
2996
2997 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2998
2999 if (stack_trace_array_h->length() != depth) {
3000 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
3001 }
3002
3003 objArrayHandle result(THREAD, objArrayOop(backtrace()));
3004 BacktraceIterator iter(result, THREAD);
3005
3006 int index = 0;
3007 while (iter.repeat()) {
3008 BacktraceElement bte = iter.next(THREAD);
3009
3010 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
3011
3012 if (stack_trace_element.is_null()) {
3013 THROW(vmSymbols::java_lang_NullPointerException());
3014 }
3015
3016 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
3017 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
3018
3019 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
3020 method,
3021 bte._version,
3022 bte._bci,
3023 bte._name,
3024 CHECK);
3025 }
3026 }
3027
3028 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
3029 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
3030 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
3031 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
3032 // symbolic stacktrace of 'throwable'.
3033 assert(throwable.not_null(), "shouldn't be");
3034
3035 // Now create the message from the original exception and thread name.
3036 ResourceMark rm(current);
3037 const char *message = nullptr;
3038 oop detailed_message = java_lang_Throwable::message(throwable());
3039 if (detailed_message != nullptr) {
3040 message = java_lang_String::as_utf8_string(detailed_message);
3041 }
3042 stringStream st;
3043 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
3044 message == nullptr ? "" : ":");
3045 if (message == nullptr) {
3046 st.print("[in thread \"%s\"]", current->name());
3047 } else {
3048 st.print("%s [in thread \"%s\"]", message, current->name());
3049 }
3050
3051 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
3052 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
3053 // If new_exception returns a different exception while creating the exception,
3054 // abandon the attempt to save the initialization error and return null.
3055 if (init_error->klass()->name() != exception_name) {
3056 log_info(class, init)("Exception %s thrown while saving initialization exception",
3057 init_error->klass()->external_name());
3058 return Handle();
3059 }
3060
3061 // Call to java to fill in the stack trace and clear declaringClassObject to
3062 // not keep classes alive in the stack trace.
3063 // call this: public StackTraceElement[] getStackTrace()
3064 JavaValue result(T_ARRAY);
3065 JavaCalls::call_virtual(&result, throwable,
3066 vmClasses::Throwable_klass(),
3067 vmSymbols::getStackTrace_name(),
3068 vmSymbols::getStackTrace_signature(),
3069 current);
3070 if (!current->has_pending_exception()){
3071 Handle stack_trace(current, result.get_oop());
3072 assert(stack_trace->is_objArray(), "Should be an array");
3073 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3074 // Clear backtrace because the stacktrace should be used instead.
3075 set_backtrace(init_error(), nullptr);
3076 } else {
3077 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3078 init_error->klass()->external_name());
3079 current->clear_pending_exception();
3080 }
3081
3082 return init_error;
3083 }
3084
3085 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3086 JavaThread* current = JavaThread::current();
3087 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
3088 BacktraceIterator iter(result, current);
3089 // No backtrace available.
3090 if (!iter.repeat()) return false;
3091
3092 // If the exception happened in a frame that has been hidden, i.e.,
3093 // omitted from the back trace, we can not compute the message.
3094 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
3095 if (hidden != nullptr) {
3096 return false;
3097 }
3098
3099 // Get first backtrace element.
3100 BacktraceElement bte = iter.next(current);
3101
3102 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
3103 assert(holder != nullptr, "first element should be non-null");
3104 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3105
3106 // Original version is no longer available.
3107 if (m == nullptr || !version_matches(m, bte._version)) {
3108 return false;
3109 }
3110
3111 *method = m;
3112 *bci = bte._bci;
3113 return true;
3114 }
3115
3116 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
3117 // Allocate java.lang.StackTraceElement instance
3118 InstanceKlass* k = vmClasses::StackTraceElement_klass();
3119 assert(k != nullptr, "must be loaded in 1.4+");
3120 if (k->should_be_initialized()) {
3121 k->initialize(CHECK_NULL);
3122 }
3123
3124 Handle element = k->allocate_instance_handle(CHECK_NULL);
3125
3126 int version = method->constants()->version();
3127 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
3128 return element();
3129 }
3130
3131 void java_lang_StackTraceElement::fill_in(Handle element,
3132 InstanceKlass* holder, const methodHandle& method,
3133 int version, int bci, Symbol* name, TRAPS) {
3134 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
3135
3136 ResourceMark rm(THREAD);
3137 HandleMark hm(THREAD);
3138
3139 // Fill in class name
3140 Handle java_class(THREAD, holder->java_mirror());
3141 oop classname = java_lang_Class::name(java_class, CHECK);
3142 java_lang_StackTraceElement::set_declaringClass(element(), classname);
3143 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
3144
3145 oop loader = holder->class_loader();
3146 if (loader != nullptr) {
3147 oop loader_name = java_lang_ClassLoader::name(loader);
3148 if (loader_name != nullptr)
3149 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
3150 }
3151
3152 // Fill in method name
3153 oop methodname = StringTable::intern(name, CHECK);
3154 java_lang_StackTraceElement::set_methodName(element(), methodname);
3155
3156 // Fill in module name and version
3157 ModuleEntry* module = holder->module();
3158 if (module->is_named()) {
3159 oop module_name = StringTable::intern(module->name(), CHECK);
3160 java_lang_StackTraceElement::set_moduleName(element(), module_name);
3161 oop module_version;
3162 if (module->version() != nullptr) {
3163 module_version = StringTable::intern(module->version(), CHECK);
3164 } else {
3165 module_version = nullptr;
3166 }
3167 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
3168 }
3169
3170 if (method() == nullptr || !version_matches(method(), version)) {
3171 // The method was redefined, accurate line number information isn't available
3172 java_lang_StackTraceElement::set_fileName(element(), nullptr);
3173 java_lang_StackTraceElement::set_lineNumber(element(), -1);
3174 } else {
3175 Symbol* source;
3176 oop source_file;
3177 int line_number;
3178 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
3179
3180 java_lang_StackTraceElement::set_fileName(element(), source_file);
3181 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
3182 }
3183 }
3184
3185 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
3186 InstanceKlass* holder,
3187 int version,
3188 const methodHandle& method,
3189 int bci,
3190 Symbol*& source,
3191 oop& source_file,
3192 int& line_number, TRAPS) {
3193 // Fill in source file name and line number.
3194 source = Backtrace::get_source_file_name(holder, version);
3195 source_file = java_lang_Class::source_file(java_class());
3196 if (source != nullptr) {
3197 // Class was not redefined. We can trust its cache if set,
3198 // else we have to initialize it.
3199 if (source_file == nullptr) {
3200 source_file = StringTable::intern(source, CHECK);
3201 java_lang_Class::set_source_file(java_class(), source_file);
3202 }
3203 } else {
3204 // Class was redefined. Dump the cache if it was set.
3205 if (source_file != nullptr) {
3206 source_file = nullptr;
3207 java_lang_Class::set_source_file(java_class(), source_file);
3208 }
3209 }
3210 line_number = Backtrace::get_line_number(method(), bci);
3211 }
3212
3213 #if INCLUDE_JVMCI
3214 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3215 Symbol*& filename, int& line_number, TRAPS) {
3216 ResourceMark rm(THREAD);
3217 HandleMark hm(THREAD);
3218
3219 filename = nullptr;
3220 line_number = -1;
3221
3222 oop source_file;
3223 int version = method->constants()->version();
3224 InstanceKlass* holder = method->method_holder();
3225 Handle java_class(THREAD, holder->java_mirror());
3226 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3227 }
3228 #endif // INCLUDE_JVMCI
3229
3230 // java_lang_ClassFrameInfo
3231
3232 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3233 int java_lang_ClassFrameInfo::_flags_offset;
3234
3235 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3236 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3237 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3238
3239 void java_lang_ClassFrameInfo::compute_offsets() {
3240 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3241 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3242 }
3243
3244 #if INCLUDE_CDS
3245 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3246 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3247 }
3248 #endif
3249
3250 static int get_flags(const methodHandle& m) {
3251 int flags = m->access_flags().as_method_flags();
3252 if (m->is_object_constructor()) {
3253 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3254 } else {
3255 // Note: Static initializers can be here. Record them as plain methods.
3256 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3257 }
3258 if (m->caller_sensitive()) {
3259 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3260 }
3261 if (m->is_hidden()) {
3262 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3263 }
3264 assert((flags & 0xFF000000) == 0, "unexpected flags");
3265 return flags;
3266 }
3267
3268 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3269 return obj->obj_field(_classOrMemberName_offset);
3270 }
3271
3272 int java_lang_ClassFrameInfo::flags(oop obj) {
3273 return obj->int_field(_flags_offset);
3274 }
3275
3276 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3277 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3278 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3279 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3280 stackFrame->int_field_put(_flags_offset, flags);
3281 }
3282
3283 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3284 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3285 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3286 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3287 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3288 stackFrame->int_field_put(_flags_offset, flags);
3289 }
3290
3291
3292 // java_lang_StackFrameInfo
3293
3294 int java_lang_StackFrameInfo::_type_offset;
3295 int java_lang_StackFrameInfo::_name_offset;
3296 int java_lang_StackFrameInfo::_bci_offset;
3297 int java_lang_StackFrameInfo::_version_offset;
3298 int java_lang_StackFrameInfo::_contScope_offset;
3299
3300 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3301 macro(_type_offset, k, "type", object_signature, false); \
3302 macro(_name_offset, k, "name", string_signature, false); \
3303 macro(_bci_offset, k, "bci", int_signature, false); \
3304 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3305
3306 void java_lang_StackFrameInfo::compute_offsets() {
3307 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3308 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3309 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3310 }
3311
3312 #if INCLUDE_CDS
3313 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3314 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3315 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3316 }
3317 #endif
3318
3319 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3320 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3321 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3322 return method;
3323 }
3324
3325 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3326 // set Method* or mid/cpref
3327 HandleMark hm(THREAD);
3328 Handle cont_h(THREAD, cont);
3329 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3330
3331 // set bci
3332 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3333 // method may be redefined; store the version
3334 int version = method->constants()->version();
3335 assert((jushort)version == version, "version should be short");
3336 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3337
3338 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3339 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3340 }
3341
3342 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3343 ResourceMark rm(THREAD);
3344 HandleMark hm(THREAD);
3345
3346 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3347 InstanceKlass* holder = method->method_holder();
3348 short version = stackFrame->short_field(_version_offset);
3349 int bci = stackFrame->int_field(_bci_offset);
3350 Symbol* name = method->name();
3351 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3352 }
3353
3354 oop java_lang_StackFrameInfo::type(oop obj) {
3355 return obj->obj_field(_type_offset);
3356 }
3357
3358 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3359 obj->obj_field_put(_type_offset, value);
3360 }
3361
3362 oop java_lang_StackFrameInfo::name(oop obj) {
3363 return obj->obj_field(_name_offset);
3364 }
3365
3366 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3367 obj->obj_field_put(_name_offset, value);
3368 }
3369
3370 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3371 obj->short_field_put(_version_offset, value);
3372 }
3373
3374 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3375 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3376 obj->int_field_put(_bci_offset, value);
3377 }
3378
3379 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3380 obj->obj_field_put(_contScope_offset, value);
3381 }
3382
3383 int java_lang_LiveStackFrameInfo::_monitors_offset;
3384 int java_lang_LiveStackFrameInfo::_locals_offset;
3385 int java_lang_LiveStackFrameInfo::_operands_offset;
3386 int java_lang_LiveStackFrameInfo::_mode_offset;
3387
3388 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3389 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3390 macro(_locals_offset, k, "locals", object_array_signature, false); \
3391 macro(_operands_offset, k, "operands", object_array_signature, false); \
3392 macro(_mode_offset, k, "mode", int_signature, false)
3393
3394 void java_lang_LiveStackFrameInfo::compute_offsets() {
3395 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3396 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3397 }
3398
3399 #if INCLUDE_CDS
3400 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3401 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3402 }
3403 #endif
3404
3405 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3406 obj->obj_field_put(_monitors_offset, value);
3407 }
3408
3409 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3410 obj->obj_field_put(_locals_offset, value);
3411 }
3412
3413 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3414 obj->obj_field_put(_operands_offset, value);
3415 }
3416
3417 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3418 obj->int_field_put(_mode_offset, value);
3419 }
3420
3421
3422 // java_lang_AccessibleObject
3423
3424 int java_lang_reflect_AccessibleObject::_override_offset;
3425
3426 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3427 macro(_override_offset, k, "override", bool_signature, false)
3428
3429 void java_lang_reflect_AccessibleObject::compute_offsets() {
3430 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3431 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3432 }
3433
3434 #if INCLUDE_CDS
3435 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3436 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3437 }
3438 #endif
3439
3440 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3441 return (jboolean) reflect->bool_field(_override_offset);
3442 }
3443
3444 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3445 reflect->bool_field_put(_override_offset, (int) value);
3446 }
3447
3448 // java_lang_reflect_Method
3449
3450 int java_lang_reflect_Method::_clazz_offset;
3451 int java_lang_reflect_Method::_name_offset;
3452 int java_lang_reflect_Method::_returnType_offset;
3453 int java_lang_reflect_Method::_parameterTypes_offset;
3454 int java_lang_reflect_Method::_exceptionTypes_offset;
3455 int java_lang_reflect_Method::_slot_offset;
3456 int java_lang_reflect_Method::_modifiers_offset;
3457 int java_lang_reflect_Method::_signature_offset;
3458 int java_lang_reflect_Method::_annotations_offset;
3459 int java_lang_reflect_Method::_parameter_annotations_offset;
3460 int java_lang_reflect_Method::_annotation_default_offset;
3461
3462 #define METHOD_FIELDS_DO(macro) \
3463 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3464 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3465 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3466 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3467 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3468 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3469 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3470 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3471 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3472 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3473 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3474
3475 void java_lang_reflect_Method::compute_offsets() {
3476 InstanceKlass* k = vmClasses::reflect_Method_klass();
3477 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3478 }
3479
3480 #if INCLUDE_CDS
3481 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3482 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3483 }
3484 #endif
3485
3486 Handle java_lang_reflect_Method::create(TRAPS) {
3487 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3488 Klass* klass = vmClasses::reflect_Method_klass();
3489 // This class is eagerly initialized during VM initialization, since we keep a reference
3490 // to one of the methods
3491 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3492 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3493 }
3494
3495 oop java_lang_reflect_Method::clazz(oop reflect) {
3496 return reflect->obj_field(_clazz_offset);
3497 }
3498
3499 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3500 reflect->obj_field_put(_clazz_offset, value);
3501 }
3502
3503 int java_lang_reflect_Method::slot(oop reflect) {
3504 return reflect->int_field(_slot_offset);
3505 }
3506
3507 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3508 reflect->int_field_put(_slot_offset, value);
3509 }
3510
3511 void java_lang_reflect_Method::set_name(oop method, oop value) {
3512 method->obj_field_put(_name_offset, value);
3513 }
3514
3515 oop java_lang_reflect_Method::return_type(oop method) {
3516 return method->obj_field(_returnType_offset);
3517 }
3518
3519 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3520 method->obj_field_put(_returnType_offset, value);
3521 }
3522
3523 oop java_lang_reflect_Method::parameter_types(oop method) {
3524 return method->obj_field(_parameterTypes_offset);
3525 }
3526
3527 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3528 method->obj_field_put(_parameterTypes_offset, value);
3529 }
3530
3531 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3532 method->obj_field_put(_exceptionTypes_offset, value);
3533 }
3534
3535 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3536 method->int_field_put(_modifiers_offset, value);
3537 }
3538
3539 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3540 method->obj_field_put(_signature_offset, value);
3541 }
3542
3543 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3544 method->obj_field_put(_annotations_offset, value);
3545 }
3546
3547 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3548 method->obj_field_put(_parameter_annotations_offset, value);
3549 }
3550
3551 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3552 method->obj_field_put(_annotation_default_offset, value);
3553 }
3554
3555 int java_lang_reflect_Constructor::_clazz_offset;
3556 int java_lang_reflect_Constructor::_parameterTypes_offset;
3557 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3558 int java_lang_reflect_Constructor::_slot_offset;
3559 int java_lang_reflect_Constructor::_modifiers_offset;
3560 int java_lang_reflect_Constructor::_signature_offset;
3561 int java_lang_reflect_Constructor::_annotations_offset;
3562 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3563
3564 #define CONSTRUCTOR_FIELDS_DO(macro) \
3565 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3566 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3567 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3568 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3569 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3570 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3571 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3572 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3573
3574 void java_lang_reflect_Constructor::compute_offsets() {
3575 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3576 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3577 }
3578
3579 #if INCLUDE_CDS
3580 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3581 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3582 }
3583 #endif
3584
3585 Handle java_lang_reflect_Constructor::create(TRAPS) {
3586 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3587 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3588 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3589 InstanceKlass* ik = InstanceKlass::cast(k);
3590 // Ensure it is initialized
3591 ik->initialize(CHECK_NH);
3592 return ik->allocate_instance_handle(THREAD);
3593 }
3594
3595 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3596 return reflect->obj_field(_clazz_offset);
3597 }
3598
3599 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3600 reflect->obj_field_put(_clazz_offset, value);
3601 }
3602
3603 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3604 return constructor->obj_field(_parameterTypes_offset);
3605 }
3606
3607 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3608 constructor->obj_field_put(_parameterTypes_offset, value);
3609 }
3610
3611 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3612 constructor->obj_field_put(_exceptionTypes_offset, value);
3613 }
3614
3615 int java_lang_reflect_Constructor::slot(oop reflect) {
3616 return reflect->int_field(_slot_offset);
3617 }
3618
3619 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3620 reflect->int_field_put(_slot_offset, value);
3621 }
3622
3623 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3624 constructor->int_field_put(_modifiers_offset, value);
3625 }
3626
3627 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3628 constructor->obj_field_put(_signature_offset, value);
3629 }
3630
3631 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3632 constructor->obj_field_put(_annotations_offset, value);
3633 }
3634
3635 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3636 method->obj_field_put(_parameter_annotations_offset, value);
3637 }
3638
3639 int java_lang_reflect_Field::_clazz_offset;
3640 int java_lang_reflect_Field::_name_offset;
3641 int java_lang_reflect_Field::_type_offset;
3642 int java_lang_reflect_Field::_slot_offset;
3643 int java_lang_reflect_Field::_modifiers_offset;
3644 int java_lang_reflect_Field::_flags_offset;
3645 int java_lang_reflect_Field::_signature_offset;
3646 int java_lang_reflect_Field::_annotations_offset;
3647
3648 #define FIELD_FIELDS_DO(macro) \
3649 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3650 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3651 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3652 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3653 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3654 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3655 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3656 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3657
3658 void java_lang_reflect_Field::compute_offsets() {
3659 InstanceKlass* k = vmClasses::reflect_Field_klass();
3660 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3661 }
3662
3663 #if INCLUDE_CDS
3664 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3665 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3666 }
3667 #endif
3668
3669 Handle java_lang_reflect_Field::create(TRAPS) {
3670 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3671 Symbol* name = vmSymbols::java_lang_reflect_Field();
3672 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3673 InstanceKlass* ik = InstanceKlass::cast(k);
3674 // Ensure it is initialized
3675 ik->initialize(CHECK_NH);
3676 return ik->allocate_instance_handle(THREAD);
3677 }
3678
3679 oop java_lang_reflect_Field::clazz(oop reflect) {
3680 return reflect->obj_field(_clazz_offset);
3681 }
3682
3683 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3684 reflect->obj_field_put(_clazz_offset, value);
3685 }
3686
3687 oop java_lang_reflect_Field::name(oop field) {
3688 return field->obj_field(_name_offset);
3689 }
3690
3691 void java_lang_reflect_Field::set_name(oop field, oop value) {
3692 field->obj_field_put(_name_offset, value);
3693 }
3694
3695 oop java_lang_reflect_Field::type(oop field) {
3696 return field->obj_field(_type_offset);
3697 }
3698
3699 void java_lang_reflect_Field::set_type(oop field, oop value) {
3700 field->obj_field_put(_type_offset, value);
3701 }
3702
3703 int java_lang_reflect_Field::slot(oop reflect) {
3704 return reflect->int_field(_slot_offset);
3705 }
3706
3707 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3708 reflect->int_field_put(_slot_offset, value);
3709 }
3710
3711 int java_lang_reflect_Field::modifiers(oop field) {
3712 return field->int_field(_modifiers_offset);
3713 }
3714
3715 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3716 field->int_field_put(_modifiers_offset, value);
3717 }
3718
3719 void java_lang_reflect_Field::set_flags(oop field, int value) {
3720 field->int_field_put(_flags_offset, value);
3721 }
3722
3723 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3724 field->obj_field_put(_signature_offset, value);
3725 }
3726
3727 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3728 field->obj_field_put(_annotations_offset, value);
3729 }
3730
3731 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3732 // Allocate java.lang.reflect.RecordComponent instance
3733 HandleMark hm(THREAD);
3734 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3735 assert(ik != nullptr, "must be loaded");
3736 ik->initialize(CHECK_NULL);
3737
3738 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3739
3740 Handle decl_class(THREAD, holder->java_mirror());
3741 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3742
3743 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3744 oop component_name = StringTable::intern(name, CHECK_NULL);
3745 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3746
3747 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3748 Handle component_type_h =
3749 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3750 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3751
3752 Method* accessor_method = nullptr;
3753 {
3754 // Prepend "()" to type to create the full method signature.
3755 ResourceMark rm(THREAD);
3756 int sig_len = type->utf8_length() + 3; // "()" and null char
3757 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3758 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3759 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3760 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3761 }
3762
3763 if (accessor_method != nullptr) {
3764 methodHandle method(THREAD, accessor_method);
3765 oop m = Reflection::new_method(method, false, CHECK_NULL);
3766 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3767 } else {
3768 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3769 }
3770
3771 int sig_index = component->generic_signature_index();
3772 if (sig_index > 0) {
3773 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3774 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3775 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3776 } else {
3777 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3778 }
3779
3780 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3781 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3782
3783 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3784 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3785
3786 return element();
3787 }
3788
3789 int reflect_ConstantPool::_oop_offset;
3790
3791 #define CONSTANTPOOL_FIELDS_DO(macro) \
3792 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3793
3794 void reflect_ConstantPool::compute_offsets() {
3795 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3796 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3797 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3798 }
3799
3800 #if INCLUDE_CDS
3801 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3802 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3803 }
3804 #endif
3805
3806 int java_lang_reflect_Parameter::_name_offset;
3807 int java_lang_reflect_Parameter::_modifiers_offset;
3808 int java_lang_reflect_Parameter::_index_offset;
3809 int java_lang_reflect_Parameter::_executable_offset;
3810
3811 #define PARAMETER_FIELDS_DO(macro) \
3812 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3813 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3814 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3815 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3816
3817 void java_lang_reflect_Parameter::compute_offsets() {
3818 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3819 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3820 }
3821
3822 #if INCLUDE_CDS
3823 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3824 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3825 }
3826 #endif
3827
3828 Handle java_lang_reflect_Parameter::create(TRAPS) {
3829 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3830 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3831 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3832 InstanceKlass* ik = InstanceKlass::cast(k);
3833 // Ensure it is initialized
3834 ik->initialize(CHECK_NH);
3835 return ik->allocate_instance_handle(THREAD);
3836 }
3837
3838 oop java_lang_reflect_Parameter::name(oop param) {
3839 return param->obj_field(_name_offset);
3840 }
3841
3842 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3843 param->obj_field_put(_name_offset, value);
3844 }
3845
3846 int java_lang_reflect_Parameter::modifiers(oop param) {
3847 return param->int_field(_modifiers_offset);
3848 }
3849
3850 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3851 param->int_field_put(_modifiers_offset, value);
3852 }
3853
3854 int java_lang_reflect_Parameter::index(oop param) {
3855 return param->int_field(_index_offset);
3856 }
3857
3858 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3859 param->int_field_put(_index_offset, value);
3860 }
3861
3862 oop java_lang_reflect_Parameter::executable(oop param) {
3863 return param->obj_field(_executable_offset);
3864 }
3865
3866 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3867 param->obj_field_put(_executable_offset, value);
3868 }
3869
3870 // java_lang_Module
3871
3872 int java_lang_Module::_loader_offset;
3873 int java_lang_Module::_name_offset;
3874 int java_lang_Module::_module_entry_offset;
3875
3876 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3877 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3878 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3879 vmSymbols::java_lang_module_init_signature(),
3880 loader, module_name, CHECK_NH);
3881 }
3882
3883 #define MODULE_FIELDS_DO(macro) \
3884 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3885 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3886
3887 void java_lang_Module::compute_offsets() {
3888 InstanceKlass* k = vmClasses::Module_klass();
3889 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3890 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3891 }
3892
3893 #if INCLUDE_CDS
3894 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3895 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3896 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3897 }
3898 #endif
3899
3900 oop java_lang_Module::loader(oop module) {
3901 return module->obj_field(_loader_offset);
3902 }
3903
3904 void java_lang_Module::set_loader(oop module, oop value) {
3905 module->obj_field_put(_loader_offset, value);
3906 }
3907
3908 oop java_lang_Module::name(oop module) {
3909 return module->obj_field(_name_offset);
3910 }
3911
3912 void java_lang_Module::set_name(oop module, oop value) {
3913 module->obj_field_put(_name_offset, value);
3914 }
3915
3916 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3917 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3918 assert(module != nullptr, "module can't be null");
3919 assert(oopDesc::is_oop(module), "module must be oop");
3920
3921 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3922 return module_entry;
3923 }
3924
3925 ModuleEntry* java_lang_Module::module_entry(oop module) {
3926 ModuleEntry* module_entry = module_entry_raw(module);
3927 if (module_entry == nullptr) {
3928 // If the inject field containing the ModuleEntry* is null then return the
3929 // class loader's unnamed module.
3930 oop loader = java_lang_Module::loader(module);
3931 Handle h_loader = Handle(Thread::current(), loader);
3932 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3933 return loader_cld->unnamed_module();
3934 }
3935 return module_entry;
3936 }
3937
3938 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3939 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3940 assert(module != nullptr, "module can't be null");
3941 assert(oopDesc::is_oop(module), "module must be oop");
3942 module->address_field_put(_module_entry_offset, (address)module_entry);
3943 }
3944
3945 Handle reflect_ConstantPool::create(TRAPS) {
3946 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3947 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3948 // Ensure it is initialized
3949 k->initialize(CHECK_NH);
3950 return k->allocate_instance_handle(THREAD);
3951 }
3952
3953
3954 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3955 oop mirror = value->pool_holder()->java_mirror();
3956 // Save the mirror to get back the constant pool.
3957 reflect->obj_field_put(_oop_offset, mirror);
3958 }
3959
3960 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3961
3962 oop mirror = reflect->obj_field(_oop_offset);
3963 Klass* k = java_lang_Class::as_Klass(mirror);
3964 assert(k->is_instance_klass(), "Must be");
3965
3966 // Get the constant pool back from the klass. Since class redefinition
3967 // merges the new constant pool into the old, this is essentially the
3968 // same constant pool as the original. If constant pool merging is
3969 // no longer done in the future, this will have to change to save
3970 // the original.
3971 return InstanceKlass::cast(k)->constants();
3972 }
3973
3974
3975 // Support for java_lang_ref_Reference
3976
3977 bool java_lang_ref_Reference::_offsets_initialized;
3978
3979 int java_lang_ref_Reference::_referent_offset;
3980 int java_lang_ref_Reference::_queue_offset;
3981 int java_lang_ref_Reference::_next_offset;
3982 int java_lang_ref_Reference::_discovered_offset;
3983
3984 #define REFERENCE_FIELDS_DO(macro) \
3985 macro(_referent_offset, k, "referent", object_signature, false); \
3986 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3987 macro(_next_offset, k, "next", reference_signature, false); \
3988 macro(_discovered_offset, k, "discovered", reference_signature, false);
3989
3990 void java_lang_ref_Reference::compute_offsets() {
3991 if (_offsets_initialized) {
3992 return;
3993 }
3994 _offsets_initialized = true;
3995 InstanceKlass* k = vmClasses::Reference_klass();
3996 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3997 }
3998
3999 #if INCLUDE_CDS
4000 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
4001 f->do_bool(&_offsets_initialized);
4002 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4003 }
4004 #endif
4005
4006 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
4007 assert(obj != nullptr, "sanity");
4008 if (offset != _referent_offset) {
4009 return false;
4010 }
4011
4012 Klass* k = obj->klass();
4013 if (!k->is_instance_klass()) {
4014 return false;
4015 }
4016
4017 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
4018 bool is_reference = ik->reference_type() != REF_NONE;
4019 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
4020 return is_reference;
4021 }
4022
4023 int* java_lang_boxing_object::_offsets;
4024
4025 #define BOXING_FIELDS_DO(macro) \
4026 macro(java_lang_boxing_object::_offsets[T_BOOLEAN - T_BOOLEAN], vmClasses::Boolean_klass(), "value", bool_signature, false); \
4027 macro(java_lang_boxing_object::_offsets[T_CHAR - T_BOOLEAN], vmClasses::Character_klass(), "value", char_signature, false); \
4028 macro(java_lang_boxing_object::_offsets[T_FLOAT - T_BOOLEAN], vmClasses::Float_klass(), "value", float_signature, false); \
4029 macro(java_lang_boxing_object::_offsets[T_DOUBLE - T_BOOLEAN], vmClasses::Double_klass(), "value", double_signature, false); \
4030 macro(java_lang_boxing_object::_offsets[T_BYTE - T_BOOLEAN], vmClasses::Byte_klass(), "value", byte_signature, false); \
4031 macro(java_lang_boxing_object::_offsets[T_SHORT - T_BOOLEAN], vmClasses::Short_klass(), "value", short_signature, false); \
4032 macro(java_lang_boxing_object::_offsets[T_INT - T_BOOLEAN], vmClasses::Integer_klass(), "value", int_signature, false); \
4033 macro(java_lang_boxing_object::_offsets[T_LONG - T_BOOLEAN], vmClasses::Long_klass(), "value", long_signature, false);
4034
4035 void java_lang_boxing_object::compute_offsets() {
4036 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4037 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4038 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4039 }
4040
4041 #if INCLUDE_CDS
4042 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
4043 if (f->reading()) {
4044 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4045 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4046 }
4047 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4048 }
4049 #endif
4050
4051 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
4052 Klass* k = vmClasses::box_klass(type);
4053 if (k == nullptr) return nullptr;
4054 InstanceKlass* ik = InstanceKlass::cast(k);
4055 if (!ik->is_initialized()) {
4056 ik->initialize(CHECK_NULL);
4057 }
4058 return ik->allocate_instance(THREAD);
4059 }
4060
4061
4062 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
4063 oop box = initialize_and_allocate(type, CHECK_NULL);
4064 if (box == nullptr) return nullptr;
4065 switch (type) {
4066 case T_BOOLEAN:
4067 box->bool_field_put(value_offset(type), value->z);
4068 break;
4069 case T_CHAR:
4070 box->char_field_put(value_offset(type), value->c);
4071 break;
4072 case T_FLOAT:
4073 box->float_field_put(value_offset(type), value->f);
4074 break;
4075 case T_DOUBLE:
4076 box->double_field_put(value_offset(type), value->d);
4077 break;
4078 case T_BYTE:
4079 box->byte_field_put(value_offset(type), value->b);
4080 break;
4081 case T_SHORT:
4082 box->short_field_put(value_offset(type), value->s);
4083 break;
4084 case T_INT:
4085 box->int_field_put(value_offset(type), value->i);
4086 break;
4087 case T_LONG:
4088 box->long_field_put(value_offset(type), value->j);
4089 break;
4090 default:
4091 return nullptr;
4092 }
4093 return box;
4094 }
4095
4096
4097 BasicType java_lang_boxing_object::basic_type(oop box) {
4098 if (box == nullptr) return T_ILLEGAL;
4099 BasicType type = vmClasses::box_klass_type(box->klass());
4100 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4101 return T_ILLEGAL;
4102 return type;
4103 }
4104
4105
4106 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4107 BasicType type = vmClasses::box_klass_type(box->klass());
4108 switch (type) {
4109 case T_BOOLEAN:
4110 value->z = box->bool_field(value_offset(type));
4111 break;
4112 case T_CHAR:
4113 value->c = box->char_field(value_offset(type));
4114 break;
4115 case T_FLOAT:
4116 value->f = box->float_field(value_offset(type));
4117 break;
4118 case T_DOUBLE:
4119 value->d = box->double_field(value_offset(type));
4120 break;
4121 case T_BYTE:
4122 value->b = box->byte_field(value_offset(type));
4123 break;
4124 case T_SHORT:
4125 value->s = box->short_field(value_offset(type));
4126 break;
4127 case T_INT:
4128 value->i = box->int_field(value_offset(type));
4129 break;
4130 case T_LONG:
4131 value->j = box->long_field(value_offset(type));
4132 break;
4133 default:
4134 return T_ILLEGAL;
4135 } // end switch
4136 return type;
4137 }
4138
4139
4140 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4141 BasicType type = vmClasses::box_klass_type(box->klass());
4142 switch (type) {
4143 case T_BOOLEAN:
4144 box->bool_field_put(value_offset(type), value->z);
4145 break;
4146 case T_CHAR:
4147 box->char_field_put(value_offset(type), value->c);
4148 break;
4149 case T_FLOAT:
4150 box->float_field_put(value_offset(type), value->f);
4151 break;
4152 case T_DOUBLE:
4153 box->double_field_put(value_offset(type), value->d);
4154 break;
4155 case T_BYTE:
4156 box->byte_field_put(value_offset(type), value->b);
4157 break;
4158 case T_SHORT:
4159 box->short_field_put(value_offset(type), value->s);
4160 break;
4161 case T_INT:
4162 box->int_field_put(value_offset(type), value->i);
4163 break;
4164 case T_LONG:
4165 box->long_field_put(value_offset(type), value->j);
4166 break;
4167 default:
4168 return T_ILLEGAL;
4169 } // end switch
4170 return type;
4171 }
4172
4173
4174 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4175 switch (type) {
4176 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4177 case T_CHAR: st->print("%d", value->c); break;
4178 case T_BYTE: st->print("%d", value->b); break;
4179 case T_SHORT: st->print("%d", value->s); break;
4180 case T_INT: st->print("%d", value->i); break;
4181 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4182 case T_FLOAT: st->print("%f", value->f); break;
4183 case T_DOUBLE: st->print("%lf", value->d); break;
4184 default: st->print("type %d?", type); break;
4185 }
4186 }
4187
4188
4189 // Support for java_lang_ref_SoftReference
4190 //
4191
4192 int java_lang_ref_SoftReference::_timestamp_offset;
4193 int java_lang_ref_SoftReference::_static_clock_offset;
4194
4195 #define SOFTREFERENCE_FIELDS_DO(macro) \
4196 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
4197 macro(_static_clock_offset, k, "clock", long_signature, true)
4198
4199 void java_lang_ref_SoftReference::compute_offsets() {
4200 InstanceKlass* k = vmClasses::SoftReference_klass();
4201 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4202 }
4203
4204 #if INCLUDE_CDS
4205 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
4206 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4207 }
4208 #endif
4209
4210 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
4211 return ref->long_field(_timestamp_offset);
4212 }
4213
4214 jlong java_lang_ref_SoftReference::clock() {
4215 InstanceKlass* ik = vmClasses::SoftReference_klass();
4216 oop base = ik->static_field_base_raw();
4217 return base->long_field(_static_clock_offset);
4218 }
4219
4220 void java_lang_ref_SoftReference::set_clock(jlong value) {
4221 InstanceKlass* ik = vmClasses::SoftReference_klass();
4222 oop base = ik->static_field_base_raw();
4223 base->long_field_put(_static_clock_offset, value);
4224 }
4225
4226 // Support for java_lang_invoke_DirectMethodHandle
4227
4228 int java_lang_invoke_DirectMethodHandle::_member_offset;
4229
4230 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4231 oop member_name = nullptr;
4232 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4233 "a DirectMethodHandle oop is expected");
4234 return dmh->obj_field(_member_offset);
4235 }
4236
4237 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4238 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4239
4240 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4241 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4242 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4243 }
4244
4245 #if INCLUDE_CDS
4246 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4247 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4248 }
4249 #endif
4250
4251 // Support for java_lang_invoke_MethodHandle
4252
4253 int java_lang_invoke_MethodHandle::_type_offset;
4254 int java_lang_invoke_MethodHandle::_form_offset;
4255
4256 int java_lang_invoke_MemberName::_clazz_offset;
4257 int java_lang_invoke_MemberName::_name_offset;
4258 int java_lang_invoke_MemberName::_type_offset;
4259 int java_lang_invoke_MemberName::_flags_offset;
4260 int java_lang_invoke_MemberName::_method_offset;
4261 int java_lang_invoke_MemberName::_vmindex_offset;
4262
4263 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4264 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4265
4266 int java_lang_invoke_LambdaForm::_vmentry_offset;
4267
4268 #define METHODHANDLE_FIELDS_DO(macro) \
4269 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4270 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4271
4272 void java_lang_invoke_MethodHandle::compute_offsets() {
4273 InstanceKlass* k = vmClasses::MethodHandle_klass();
4274 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4275 }
4276
4277 #if INCLUDE_CDS
4278 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4279 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4280 }
4281 #endif
4282
4283 #define MEMBERNAME_FIELDS_DO(macro) \
4284 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4285 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4286 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4287 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4288 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4289
4290 void java_lang_invoke_MemberName::compute_offsets() {
4291 InstanceKlass* k = vmClasses::MemberName_klass();
4292 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4293 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4294 }
4295
4296 #if INCLUDE_CDS
4297 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4298 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4299 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4300 }
4301 #endif
4302
4303 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4304 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4305
4306 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4307 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4308 assert(k != nullptr, "jdk mismatch");
4309 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4310 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4311 }
4312
4313 #if INCLUDE_CDS
4314 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4315 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4316 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4317 }
4318 #endif
4319
4320 #define LAMBDAFORM_FIELDS_DO(macro) \
4321 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4322
4323 void java_lang_invoke_LambdaForm::compute_offsets() {
4324 InstanceKlass* k = vmClasses::LambdaForm_klass();
4325 assert (k != nullptr, "jdk mismatch");
4326 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4327 }
4328
4329 #if INCLUDE_CDS
4330 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4331 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4332 }
4333 #endif
4334
4335 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4336 return obj != nullptr && is_subclass(obj->klass());
4337 }
4338
4339 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4340 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4341
4342 #define NEP_FIELDS_DO(macro) \
4343 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4344 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4345
4346 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4347 return obj != nullptr && is_subclass(obj->klass());
4348 }
4349
4350 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4351 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4352 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4353 }
4354
4355 #if INCLUDE_CDS
4356 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4357 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4358 }
4359 #endif
4360
4361 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4362 return entry->obj_field(_method_type_offset);
4363 }
4364
4365 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4366 return entry->long_field(_downcall_stub_address_offset);
4367 }
4368
4369 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4370 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4371 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4372 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4373 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4374 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4375 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4376
4377 #define ABIDescriptor_FIELDS_DO(macro) \
4378 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4379 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4380 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4381 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4382 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4383 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4384 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4385
4386 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4387 return obj != nullptr && is_subclass(obj->klass());
4388 }
4389
4390 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4391 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4392 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4393 }
4394
4395 #if INCLUDE_CDS
4396 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4397 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4398 }
4399 #endif
4400
4401 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4402 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4403 }
4404
4405 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4406 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4407 }
4408
4409 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4410 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4411 }
4412
4413 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4414 return entry->int_field(_stackAlignment_offset);
4415 }
4416
4417 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4418 return entry->int_field(_shadowSpace_offset);
4419 }
4420
4421 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4422 return entry->obj_field(_scratch1_offset);
4423 }
4424
4425 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4426 return entry->obj_field(_scratch2_offset);
4427 }
4428
4429 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4430 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4431 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4432 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4433
4434 #define VMStorage_FIELDS_DO(macro) \
4435 macro(_type_offset, k, "type", byte_signature, false); \
4436 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4437 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4438 macro(_debugName_offset, k, "debugName", string_signature, false); \
4439
4440 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4441 return obj != nullptr && is_subclass(obj->klass());
4442 }
4443
4444 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4445 InstanceKlass* k = vmClasses::VMStorage_klass();
4446 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4447 }
4448
4449 #if INCLUDE_CDS
4450 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4451 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4452 }
4453 #endif
4454
4455 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4456 return entry->byte_field(_type_offset);
4457 }
4458
4459 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4460 return entry->int_field(_indexOrOffset_offset);
4461 }
4462
4463 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4464 return entry->short_field(_segmentMaskOrSize_offset);
4465 }
4466
4467 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4468 return entry->obj_field(_debugName_offset);
4469 }
4470
4471 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4472 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4473
4474 #define CallConv_FIELDS_DO(macro) \
4475 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4476 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4477
4478 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4479 return obj != nullptr && is_subclass(obj->klass());
4480 }
4481
4482 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4483 InstanceKlass* k = vmClasses::CallConv_klass();
4484 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4485 }
4486
4487 #if INCLUDE_CDS
4488 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4489 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4490 }
4491 #endif
4492
4493 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4494 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4495 }
4496
4497 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4498 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4499 }
4500
4501 oop java_lang_invoke_MethodHandle::type(oop mh) {
4502 return mh->obj_field(_type_offset);
4503 }
4504
4505 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4506 mh->obj_field_put(_type_offset, mtype);
4507 }
4508
4509 oop java_lang_invoke_MethodHandle::form(oop mh) {
4510 assert(_form_offset != 0, "");
4511 return mh->obj_field(_form_offset);
4512 }
4513
4514 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4515 assert(_form_offset != 0, "");
4516 mh->obj_field_put(_form_offset, lform);
4517 }
4518
4519 /// MemberName accessors
4520
4521 oop java_lang_invoke_MemberName::clazz(oop mname) {
4522 assert(is_instance(mname), "wrong type");
4523 return mname->obj_field(_clazz_offset);
4524 }
4525
4526 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4527 assert(is_instance(mname), "wrong type");
4528 mname->obj_field_put(_clazz_offset, clazz);
4529 }
4530
4531 oop java_lang_invoke_MemberName::name(oop mname) {
4532 assert(is_instance(mname), "wrong type");
4533 return mname->obj_field(_name_offset);
4534 }
4535
4536 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4537 assert(is_instance(mname), "wrong type");
4538 mname->obj_field_put(_name_offset, name);
4539 }
4540
4541 oop java_lang_invoke_MemberName::type(oop mname) {
4542 assert(is_instance(mname), "wrong type");
4543 return mname->obj_field(_type_offset);
4544 }
4545
4546 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4547 assert(is_instance(mname), "wrong type");
4548 mname->obj_field_put(_type_offset, type);
4549 }
4550
4551 int java_lang_invoke_MemberName::flags(oop mname) {
4552 assert(is_instance(mname), "wrong type");
4553 return mname->int_field(_flags_offset);
4554 }
4555
4556 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4557 assert(is_instance(mname), "wrong type");
4558 mname->int_field_put(_flags_offset, flags);
4559 }
4560
4561 // Return vmtarget from ResolvedMethodName method field through indirection
4562 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4563 assert(is_instance(mname), "wrong type");
4564 oop method = mname->obj_field(_method_offset);
4565 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4566 }
4567
4568 bool java_lang_invoke_MemberName::is_method(oop mname) {
4569 assert(is_instance(mname), "must be MemberName");
4570 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4571 }
4572
4573 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4574 assert(is_instance(mname), "wrong type");
4575 mname->obj_field_put(_method_offset, resolved_method);
4576 }
4577
4578 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4579 assert(is_instance(mname), "wrong type");
4580 return (intptr_t) mname->address_field(_vmindex_offset);
4581 }
4582
4583 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4584 assert(is_instance(mname), "wrong type");
4585 mname->address_field_put(_vmindex_offset, (address) index);
4586 }
4587
4588
4589 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4590 assert(is_instance(resolved_method), "wrong type");
4591 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4592 assert(m->is_method(), "must be");
4593 return m;
4594 }
4595
4596 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4597 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4598 assert(is_instance(resolved_method), "wrong type");
4599 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4600 }
4601
4602 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4603 assert(is_instance(resolved_method), "wrong type");
4604 resolved_method->obj_field_put(_vmholder_offset, holder);
4605 }
4606
4607 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4608 const Method* method = m();
4609
4610 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4611 oop resolved_method = ResolvedMethodTable::find_method(method);
4612 if (resolved_method != nullptr) {
4613 return resolved_method;
4614 }
4615
4616 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4617 if (!k->is_initialized()) {
4618 k->initialize(CHECK_NULL);
4619 }
4620
4621 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4622
4623 NoSafepointVerifier nsv;
4624
4625 if (method->is_old()) {
4626 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4627 method->get_new_method();
4628 }
4629
4630 InstanceKlass* holder = method->method_holder();
4631
4632 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4633 // Add a reference to the loader (actually mirror because hidden classes may not have
4634 // distinct loaders) to ensure the metadata is kept alive.
4635 // This mirror may be different than the one in clazz field.
4636 set_vmholder(new_resolved_method, holder->java_mirror());
4637
4638 // Set flag in class to indicate this InstanceKlass has entries in the table
4639 // to avoid walking table during redefinition if none of the redefined classes
4640 // have any membernames in the table.
4641 holder->set_has_resolved_methods();
4642
4643 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4644 }
4645
4646 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4647 assert(is_instance(lform), "wrong type");
4648 return lform->obj_field(_vmentry_offset);
4649 }
4650
4651
4652 // Support for java_lang_invoke_MethodType
4653
4654 int java_lang_invoke_MethodType::_rtype_offset;
4655 int java_lang_invoke_MethodType::_ptypes_offset;
4656
4657 #define METHODTYPE_FIELDS_DO(macro) \
4658 macro(_rtype_offset, k, "rtype", class_signature, false); \
4659 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4660
4661 void java_lang_invoke_MethodType::compute_offsets() {
4662 InstanceKlass* k = vmClasses::MethodType_klass();
4663 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4664 }
4665
4666 #if INCLUDE_CDS
4667 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4668 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4669 }
4670 #endif
4671
4672 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4673 st->print("(");
4674 objArrayOop pts = ptypes(mt);
4675 if (pts != nullptr) {
4676 for (int i = 0, limit = pts->length(); i < limit; i++) {
4677 java_lang_Class::print_signature(pts->obj_at(i), st);
4678 }
4679 } else {
4680 st->print("null");
4681 }
4682 st->print(")");
4683 oop rt = rtype(mt);
4684 if (rt != nullptr) {
4685 java_lang_Class::print_signature(rt, st);
4686 } else {
4687 st->print("null");
4688 }
4689 }
4690
4691 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4692 ResourceMark rm;
4693 stringStream buffer(128);
4694 print_signature(mt, &buffer);
4695 const char* sigstr = buffer.base();
4696 int siglen = (int) buffer.size();
4697 Symbol *name;
4698 if (!intern_if_not_found) {
4699 name = SymbolTable::probe(sigstr, siglen);
4700 } else {
4701 name = SymbolTable::new_symbol(sigstr, siglen);
4702 }
4703 return name;
4704 }
4705
4706 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4707 if (mt1 == mt2)
4708 return true;
4709 if (rtype(mt1) != rtype(mt2))
4710 return false;
4711 if (ptype_count(mt1) != ptype_count(mt2))
4712 return false;
4713 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4714 if (ptype(mt1, i) != ptype(mt2, i))
4715 return false;
4716 }
4717 return true;
4718 }
4719
4720 oop java_lang_invoke_MethodType::rtype(oop mt) {
4721 assert(is_instance(mt), "must be a MethodType");
4722 return mt->obj_field(_rtype_offset);
4723 }
4724
4725 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4726 assert(is_instance(mt), "must be a MethodType");
4727 return (objArrayOop) mt->obj_field(_ptypes_offset);
4728 }
4729
4730 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4731 return ptypes(mt)->obj_at(idx);
4732 }
4733
4734 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4735 return ptypes(mt)->length();
4736 }
4737
4738 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4739 objArrayOop pts = ptypes(mt);
4740 int count = pts->length();
4741 int slots = 0;
4742 for (int i = 0; i < count; i++) {
4743 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4744 slots += type2size[bt];
4745 }
4746 return slots;
4747 }
4748
4749 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4750 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4751 return type2size[bt];
4752 }
4753
4754
4755 // Support for java_lang_invoke_CallSite
4756
4757 int java_lang_invoke_CallSite::_target_offset;
4758 int java_lang_invoke_CallSite::_vmdependencies_offset;
4759 int java_lang_invoke_CallSite::_last_cleanup_offset;
4760
4761 #define CALLSITE_FIELDS_DO(macro) \
4762 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4763
4764 void java_lang_invoke_CallSite::compute_offsets() {
4765 InstanceKlass* k = vmClasses::CallSite_klass();
4766 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4767 CALLSITE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4768 }
4769
4770 #if INCLUDE_CDS
4771 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4772 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4773 CALLSITE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4774 }
4775 #endif
4776
4777 DependencyContext java_lang_invoke_CallSite::vmdependencies(oop call_site) {
4778 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4779 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4780 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4781 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4782 return dep_ctx;
4783 }
4784
4785 // Support for java_lang_invoke_ConstantCallSite
4786
4787 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4788
4789 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4790 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4791
4792 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4793 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4794 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4795 }
4796
4797 #if INCLUDE_CDS
4798 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4799 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4800 }
4801 #endif
4802
4803 // Support for java_lang_ClassLoader
4804
4805 int java_lang_ClassLoader::_loader_data_offset;
4806 int java_lang_ClassLoader::_parallelCapable_offset;
4807 int java_lang_ClassLoader::_name_offset;
4808 int java_lang_ClassLoader::_nameAndId_offset;
4809 int java_lang_ClassLoader::_unnamedModule_offset;
4810 int java_lang_ClassLoader::_parent_offset;
4811
4812 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4813 assert(loader != nullptr, "loader must not be null");
4814 assert(oopDesc::is_oop(loader), "loader must be oop");
4815 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4816 }
4817
4818 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4819 assert(loader != nullptr, "loader must not be null");
4820 assert(oopDesc::is_oop(loader), "loader must be oop");
4821 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4822 }
4823
4824 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4825 assert(loader != nullptr, "loader must not be null");
4826 assert(oopDesc::is_oop(loader), "loader must be oop");
4827 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4828 }
4829
4830 #define CLASSLOADER_FIELDS_DO(macro) \
4831 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4832 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4833 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4834 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4835 macro(_parent_offset, k1, "parent", classloader_signature, false)
4836
4837 void java_lang_ClassLoader::compute_offsets() {
4838 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4839 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4840
4841 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4842 }
4843
4844 #if INCLUDE_CDS
4845 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4846 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4847 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4848 }
4849 #endif
4850
4851 oop java_lang_ClassLoader::parent(oop loader) {
4852 assert(is_instance(loader), "loader must be oop");
4853 return loader->obj_field(_parent_offset);
4854 }
4855
4856 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4857 assert(is_instance(loader), "loader must be oop");
4858 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4859 }
4860
4861 // Returns the name field of this class loader. If the name field has not
4862 // been set, null will be returned.
4863 oop java_lang_ClassLoader::name(oop loader) {
4864 assert(is_instance(loader), "loader must be oop");
4865 return loader->obj_field(_name_offset);
4866 }
4867
4868 // Returns the nameAndId field of this class loader. The format is
4869 // as follows:
4870 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4871 // If the defining loader has no name then <qualified-class-name> @<id>
4872 // If built-in loader, then omit '@<id>' as there is only one instance.
4873 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4874 oop java_lang_ClassLoader::nameAndId(oop loader) {
4875 assert(is_instance(loader), "loader must be oop");
4876 return loader->obj_field(_nameAndId_offset);
4877 }
4878
4879 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4880 assert(is_instance(loader), "loader must be oop");
4881 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4882 oop acl = loader;
4883 DEBUG_ONLY(jint loop_count = 0);
4884 // This loop taken verbatim from ClassLoader.java:
4885 do {
4886 acl = parent(acl);
4887 if (cl == acl) {
4888 return true;
4889 }
4890 assert(++loop_count > 0, "loop_count overflow");
4891 } while (acl != nullptr);
4892 return false;
4893 }
4894
4895 bool java_lang_ClassLoader::is_instance(oop obj) {
4896 return obj != nullptr && is_subclass(obj->klass());
4897 }
4898
4899
4900 // For class loader classes, parallelCapable defined
4901 // based on non-null field
4902 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4903 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4904 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4905 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4906 }
4907
4908 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4909 oop cl = SystemDictionary::java_system_loader();
4910 while(cl != nullptr) {
4911 if (cl == loader) return true;
4912 cl = parent(cl);
4913 }
4914 return false;
4915 }
4916
4917 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4918 assert(is_instance(loader), "loader must be oop");
4919 return loader->obj_field(_unnamedModule_offset);
4920 }
4921
4922 // Support for java_lang_System
4923 //
4924
4925 int java_lang_System::_static_in_offset;
4926 int java_lang_System::_static_out_offset;
4927 int java_lang_System::_static_err_offset;
4928
4929 #define SYSTEM_FIELDS_DO(macro) \
4930 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4931 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4932 macro(_static_err_offset, k, "err", print_stream_signature, true);
4933
4934 void java_lang_System::compute_offsets() {
4935 InstanceKlass* k = vmClasses::System_klass();
4936 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4937 }
4938
4939 #if INCLUDE_CDS
4940 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4941 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4942 }
4943 #endif
4944
4945 // Support for jdk_internal_misc_UnsafeConstants
4946 //
4947 class UnsafeConstantsFixup : public FieldClosure {
4948 private:
4949 int _address_size;
4950 int _page_size;
4951 bool _big_endian;
4952 bool _use_unaligned_access;
4953 int _data_cache_line_flush_size;
4954 public:
4955 UnsafeConstantsFixup() {
4956 // round up values for all static final fields
4957 _address_size = sizeof(void*);
4958 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4959 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4960 _use_unaligned_access = UseUnalignedAccesses;
4961 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4962 }
4963
4964 void do_field(fieldDescriptor* fd) {
4965 oop mirror = fd->field_holder()->java_mirror();
4966 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4967 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4968 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4969 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4970 if (fd->name() == vmSymbols::address_size_name()) {
4971 mirror->int_field_put(fd->offset(), _address_size);
4972 } else if (fd->name() == vmSymbols::page_size_name()) {
4973 mirror->int_field_put(fd->offset(), _page_size);
4974 } else if (fd->name() == vmSymbols::big_endian_name()) {
4975 mirror->bool_field_put(fd->offset(), _big_endian);
4976 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4977 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4978 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4979 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4980 } else {
4981 assert(false, "unexpected UnsafeConstants field");
4982 }
4983 }
4984 };
4985
4986 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4987 UnsafeConstantsFixup fixup;
4988 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4989 }
4990
4991
4992 // java_lang_StackTraceElement
4993
4994 int java_lang_StackTraceElement::_methodName_offset;
4995 int java_lang_StackTraceElement::_fileName_offset;
4996 int java_lang_StackTraceElement::_lineNumber_offset;
4997 int java_lang_StackTraceElement::_moduleName_offset;
4998 int java_lang_StackTraceElement::_moduleVersion_offset;
4999 int java_lang_StackTraceElement::_classLoaderName_offset;
5000 int java_lang_StackTraceElement::_declaringClass_offset;
5001 int java_lang_StackTraceElement::_declaringClassObject_offset;
5002
5003 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
5004 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
5005 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
5006 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
5007 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
5008 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
5009 macro(_methodName_offset, k, "methodName", string_signature, false); \
5010 macro(_fileName_offset, k, "fileName", string_signature, false); \
5011 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
5012
5013 // Support for java_lang_StackTraceElement
5014 void java_lang_StackTraceElement::compute_offsets() {
5015 InstanceKlass* k = vmClasses::StackTraceElement_klass();
5016 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5017 }
5018
5019 #if INCLUDE_CDS
5020 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
5021 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5022 }
5023 #endif
5024
5025 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
5026 element->obj_field_put(_fileName_offset, value);
5027 }
5028
5029 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
5030 element->obj_field_put(_declaringClass_offset, value);
5031 }
5032
5033 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
5034 element->obj_field_put(_methodName_offset, value);
5035 }
5036
5037 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
5038 element->int_field_put(_lineNumber_offset, value);
5039 }
5040
5041 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
5042 element->obj_field_put(_moduleName_offset, value);
5043 }
5044
5045 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
5046 element->obj_field_put(_moduleVersion_offset, value);
5047 }
5048
5049 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
5050 element->obj_field_put(_classLoaderName_offset, value);
5051 }
5052
5053 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
5054 element->obj_field_put(_declaringClassObject_offset, value);
5055 }
5056
5057
5058 // java_lang_AssertionStatusDirectives
5059
5060 int java_lang_AssertionStatusDirectives::_classes_offset;
5061 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
5062 int java_lang_AssertionStatusDirectives::_packages_offset;
5063 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
5064 int java_lang_AssertionStatusDirectives::_deflt_offset;
5065
5066 // Support for java Assertions - java_lang_AssertionStatusDirectives.
5067 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
5068 macro(_classes_offset, k, "classes", string_array_signature, false); \
5069 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
5070 macro(_packages_offset, k, "packages", string_array_signature, false); \
5071 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
5072 macro(_deflt_offset, k, "deflt", bool_signature, false)
5073
5074 void java_lang_AssertionStatusDirectives::compute_offsets() {
5075 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
5076 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5077 }
5078
5079 #if INCLUDE_CDS
5080 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
5081 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5082 }
5083 #endif
5084
5085 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
5086 o->obj_field_put(_classes_offset, val);
5087 }
5088
5089 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
5090 o->obj_field_put(_classEnabled_offset, val);
5091 }
5092
5093 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
5094 o->obj_field_put(_packages_offset, val);
5095 }
5096
5097 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
5098 o->obj_field_put(_packageEnabled_offset, val);
5099 }
5100
5101 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
5102 o->bool_field_put(_deflt_offset, val);
5103 }
5104
5105 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5106
5107 #define AOS_FIELDS_DO(macro) \
5108 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5109
5110 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5111 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5112 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5113 }
5114
5115 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5116 assert(_owner_offset != 0, "Must be initialized");
5117 return obj->obj_field(_owner_offset);
5118 }
5119
5120 #if INCLUDE_CDS
5121 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5122 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5123 }
5124 #endif
5125
5126 int vector_VectorPayload::_payload_offset;
5127
5128 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5129 macro(_payload_offset, k, "payload", object_signature, false)
5130
5131 void vector_VectorPayload::compute_offsets() {
5132 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5133 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5134 }
5135
5136 #if INCLUDE_CDS
5137 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5138 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5139 }
5140 #endif
5141
5142 void vector_VectorPayload::set_payload(oop o, oop val) {
5143 o->obj_field_put(_payload_offset, val);
5144 }
5145
5146 bool vector_VectorPayload::is_instance(oop obj) {
5147 return obj != nullptr && is_subclass(obj->klass());
5148 }
5149
5150 int java_lang_Integer_IntegerCache::_static_cache_offset;
5151 int java_lang_Long_LongCache::_static_cache_offset;
5152 int java_lang_Character_CharacterCache::_static_cache_offset;
5153 int java_lang_Short_ShortCache::_static_cache_offset;
5154 int java_lang_Byte_ByteCache::_static_cache_offset;
5155
5156 #define INTEGER_CACHE_FIELDS_DO(macro) \
5157 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5158
5159 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5160 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5161 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5162 }
5163
5164 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5165 oop base = ik->static_field_base_raw();
5166 return objArrayOop(base->obj_field(_static_cache_offset));
5167 }
5168
5169 Symbol* java_lang_Integer_IntegerCache::symbol() {
5170 return vmSymbols::java_lang_Integer_IntegerCache();
5171 }
5172
5173 #if INCLUDE_CDS
5174 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5175 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5176 }
5177 #endif
5178 #undef INTEGER_CACHE_FIELDS_DO
5179
5180 jint java_lang_Integer::value(oop obj) {
5181 jvalue v;
5182 java_lang_boxing_object::get_value(obj, &v);
5183 return v.i;
5184 }
5185
5186 #define LONG_CACHE_FIELDS_DO(macro) \
5187 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5188
5189 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5190 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5191 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5192 }
5193
5194 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5195 oop base = ik->static_field_base_raw();
5196 return objArrayOop(base->obj_field(_static_cache_offset));
5197 }
5198
5199 Symbol* java_lang_Long_LongCache::symbol() {
5200 return vmSymbols::java_lang_Long_LongCache();
5201 }
5202
5203 #if INCLUDE_CDS
5204 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5205 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5206 }
5207 #endif
5208 #undef LONG_CACHE_FIELDS_DO
5209
5210 jlong java_lang_Long::value(oop obj) {
5211 jvalue v;
5212 java_lang_boxing_object::get_value(obj, &v);
5213 return v.j;
5214 }
5215
5216 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5217 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5218
5219 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5220 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5221 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5222 }
5223
5224 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5225 oop base = ik->static_field_base_raw();
5226 return objArrayOop(base->obj_field(_static_cache_offset));
5227 }
5228
5229 Symbol* java_lang_Character_CharacterCache::symbol() {
5230 return vmSymbols::java_lang_Character_CharacterCache();
5231 }
5232
5233 #if INCLUDE_CDS
5234 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5235 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5236 }
5237 #endif
5238 #undef CHARACTER_CACHE_FIELDS_DO
5239
5240 jchar java_lang_Character::value(oop obj) {
5241 jvalue v;
5242 java_lang_boxing_object::get_value(obj, &v);
5243 return v.c;
5244 }
5245
5246 #define SHORT_CACHE_FIELDS_DO(macro) \
5247 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5248
5249 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5250 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5251 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5252 }
5253
5254 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5255 oop base = ik->static_field_base_raw();
5256 return objArrayOop(base->obj_field(_static_cache_offset));
5257 }
5258
5259 Symbol* java_lang_Short_ShortCache::symbol() {
5260 return vmSymbols::java_lang_Short_ShortCache();
5261 }
5262
5263 #if INCLUDE_CDS
5264 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5265 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5266 }
5267 #endif
5268 #undef SHORT_CACHE_FIELDS_DO
5269
5270 jshort java_lang_Short::value(oop obj) {
5271 jvalue v;
5272 java_lang_boxing_object::get_value(obj, &v);
5273 return v.s;
5274 }
5275
5276 #define BYTE_CACHE_FIELDS_DO(macro) \
5277 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5278
5279 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5280 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5281 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5282 }
5283
5284 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5285 oop base = ik->static_field_base_raw();
5286 return objArrayOop(base->obj_field(_static_cache_offset));
5287 }
5288
5289 Symbol* java_lang_Byte_ByteCache::symbol() {
5290 return vmSymbols::java_lang_Byte_ByteCache();
5291 }
5292
5293 #if INCLUDE_CDS
5294 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5295 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5296 }
5297 #endif
5298 #undef BYTE_CACHE_FIELDS_DO
5299
5300 jbyte java_lang_Byte::value(oop obj) {
5301 jvalue v;
5302 java_lang_boxing_object::get_value(obj, &v);
5303 return v.b;
5304 }
5305
5306 int java_lang_Boolean::_static_TRUE_offset;
5307 int java_lang_Boolean::_static_FALSE_offset;
5308
5309 #define BOOLEAN_FIELDS_DO(macro) \
5310 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5311 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5312
5313
5314 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5315 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5316 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5317 }
5318
5319 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5320 oop base = ik->static_field_base_raw();
5321 return base->obj_field(_static_TRUE_offset);
5322 }
5323
5324 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5325 oop base = ik->static_field_base_raw();
5326 return base->obj_field(_static_FALSE_offset);
5327 }
5328
5329 Symbol* java_lang_Boolean::symbol() {
5330 return vmSymbols::java_lang_Boolean();
5331 }
5332
5333 #if INCLUDE_CDS
5334 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5335 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5336 }
5337 #endif
5338 #undef BOOLEAN_CACHE_FIELDS_DO
5339
5340 jboolean java_lang_Boolean::value(oop obj) {
5341 jvalue v;
5342 java_lang_boxing_object::get_value(obj, &v);
5343 return v.z;
5344 }
5345
5346 // java_lang_reflect_RecordComponent
5347
5348 int java_lang_reflect_RecordComponent::_clazz_offset;
5349 int java_lang_reflect_RecordComponent::_name_offset;
5350 int java_lang_reflect_RecordComponent::_type_offset;
5351 int java_lang_reflect_RecordComponent::_accessor_offset;
5352 int java_lang_reflect_RecordComponent::_signature_offset;
5353 int java_lang_reflect_RecordComponent::_annotations_offset;
5354 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5355
5356 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5357 macro(_clazz_offset, k, "clazz", class_signature, false); \
5358 macro(_name_offset, k, "name", string_signature, false); \
5359 macro(_type_offset, k, "type", class_signature, false); \
5360 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5361 macro(_signature_offset, k, "signature", string_signature, false); \
5362 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5363 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5364
5365 // Support for java_lang_reflect_RecordComponent
5366 void java_lang_reflect_RecordComponent::compute_offsets() {
5367 InstanceKlass* k = vmClasses::RecordComponent_klass();
5368 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5369 }
5370
5371 #if INCLUDE_CDS
5372 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5373 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5374 }
5375 #endif
5376
5377 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5378 element->obj_field_put(_clazz_offset, value);
5379 }
5380
5381 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5382 element->obj_field_put(_name_offset, value);
5383 }
5384
5385 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5386 element->obj_field_put(_type_offset, value);
5387 }
5388
5389 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5390 element->obj_field_put(_accessor_offset, value);
5391 }
5392
5393 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5394 element->obj_field_put(_signature_offset, value);
5395 }
5396
5397 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5398 element->obj_field_put(_annotations_offset, value);
5399 }
5400
5401 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5402 element->obj_field_put(_typeAnnotations_offset, value);
5403 }
5404
5405 // java_lang_InternalError
5406 int java_lang_InternalError::_during_unsafe_access_offset;
5407
5408 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5409 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5410 }
5411
5412 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5413 return internal_error->bool_field(_during_unsafe_access_offset);
5414 }
5415
5416 void java_lang_InternalError::compute_offsets() {
5417 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5418 }
5419
5420 #if INCLUDE_CDS
5421 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5422 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5423 }
5424 #endif
5425
5426 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5427 f(java_lang_Class) \
5428 f(java_lang_String) \
5429 f(java_lang_ref_Reference) \
5430 //end
5431
5432 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5433 f(java_lang_System) \
5434 f(java_lang_ClassLoader) \
5435 f(java_lang_Throwable) \
5436 f(java_lang_Thread) \
5437 f(java_lang_Thread_FieldHolder) \
5438 f(java_lang_Thread_Constants) \
5439 f(java_lang_ThreadGroup) \
5440 f(java_lang_VirtualThread) \
5441 f(java_lang_InternalError) \
5442 f(java_lang_AssertionStatusDirectives) \
5443 f(java_lang_ref_SoftReference) \
5444 f(java_lang_invoke_MethodHandle) \
5445 f(java_lang_invoke_DirectMethodHandle) \
5446 f(java_lang_invoke_MemberName) \
5447 f(java_lang_invoke_ResolvedMethodName) \
5448 f(java_lang_invoke_LambdaForm) \
5449 f(java_lang_invoke_MethodType) \
5450 f(java_lang_invoke_CallSite) \
5451 f(java_lang_invoke_ConstantCallSite) \
5452 f(java_lang_reflect_AccessibleObject) \
5453 f(java_lang_reflect_Method) \
5454 f(java_lang_reflect_Constructor) \
5455 f(java_lang_reflect_Field) \
5456 f(java_lang_reflect_RecordComponent) \
5457 f(reflect_ConstantPool) \
5458 f(java_lang_reflect_Parameter) \
5459 f(java_lang_Module) \
5460 f(java_lang_StackTraceElement) \
5461 f(java_lang_ClassFrameInfo) \
5462 f(java_lang_StackFrameInfo) \
5463 f(java_lang_LiveStackFrameInfo) \
5464 f(jdk_internal_vm_ContinuationScope) \
5465 f(jdk_internal_vm_Continuation) \
5466 f(jdk_internal_vm_StackChunk) \
5467 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5468 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5469 f(jdk_internal_foreign_abi_ABIDescriptor) \
5470 f(jdk_internal_foreign_abi_VMStorage) \
5471 f(jdk_internal_foreign_abi_CallConv) \
5472 f(jdk_internal_misc_UnsafeConstants) \
5473 f(java_lang_boxing_object) \
5474 f(vector_VectorPayload) \
5475 //end
5476
5477 #define BASIC_JAVA_CLASSES_DO(f) \
5478 BASIC_JAVA_CLASSES_DO_PART1(f) \
5479 BASIC_JAVA_CLASSES_DO_PART2(f)
5480
5481 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5482
5483 // Compute field offsets of all the classes in this file
5484 void JavaClasses::compute_offsets() {
5485 if (CDSConfig::is_using_archive()) {
5486 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5487 JvmtiExport::has_early_class_hook_env()),
5488 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5489 // None of the classes used by the rest of this function can be replaced by
5490 // JVMTI ClassFileLoadHook.
5491 // We are safe to use the archived offsets, which have already been restored
5492 // by JavaClasses::serialize_offsets, without computing the offsets again.
5493 return;
5494 }
5495
5496 // We have already called the compute_offsets() of the
5497 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5498 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5499 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5500 }
5501
5502 #if INCLUDE_CDS
5503 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5504
5505 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5506 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5507 }
5508 #endif
5509
5510 #if INCLUDE_CDS_JAVA_HEAP
5511 bool JavaClasses::is_supported_for_archiving(oop obj) {
5512 Klass* klass = obj->klass();
5513
5514 if (!CDSConfig::is_dumping_method_handles()) {
5515 // These are supported by CDS only when CDSConfig::is_dumping_method_handles() is enabled.
5516 if (klass == vmClasses::ResolvedMethodName_klass() ||
5517 klass == vmClasses::MemberName_klass()) {
5518 return false;
5519 }
5520 }
5521
5522 if (!AOTReferenceObjSupport::is_enabled() && klass->is_subclass_of(vmClasses::Reference_klass())) {
5523 return false;
5524 }
5525
5526 return true;
5527 }
5528 #endif
5529
5530 #ifndef PRODUCT
5531
5532 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5533
5534 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5535 const char* field_sig) {
5536 EXCEPTION_MARK;
5537 fieldDescriptor fd;
5538 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5539 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5540 InstanceKlass* ik = InstanceKlass::cast(k);
5541 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5542 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5543 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5544 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5545 return false;
5546 }
5547 if (fd.is_static()) {
5548 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5549 return false;
5550 }
5551 if (fd.offset() == deserialized_offset ) {
5552 return true;
5553 } else {
5554 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5555 klass_name, field_name, deserialized_offset, fd.offset());
5556 return false;
5557 }
5558 }
5559
5560 void JavaClasses::check_offsets() {
5561 bool valid = true;
5562
5563 #define CHECK_OFFSET(klass_name, type, field_sig) \
5564 valid &= check_offset(klass_name, java_lang_boxing_object::value_offset(type), "value", field_sig)
5565
5566 CHECK_OFFSET("java/lang/Boolean", T_BOOLEAN, "Z");
5567 CHECK_OFFSET("java/lang/Character", T_CHAR, "C");
5568 CHECK_OFFSET("java/lang/Float", T_FLOAT, "F");
5569 CHECK_OFFSET("java/lang/Double", T_DOUBLE, "D");
5570 CHECK_OFFSET("java/lang/Byte", T_BYTE, "B");
5571 CHECK_OFFSET("java/lang/Short", T_SHORT, "S");
5572 CHECK_OFFSET("java/lang/Integer", T_INT, "I");
5573 CHECK_OFFSET("java/lang/Long", T_LONG, "J");
5574
5575 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5576 }
5577
5578 #endif // PRODUCT
5579
5580 int InjectedField::compute_offset() {
5581 InstanceKlass* ik = InstanceKlass::cast(klass());
5582 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5583 if (!may_be_java && !fs.field_flags().is_injected()) {
5584 // Only look at injected fields
5585 continue;
5586 }
5587 if (fs.name() == name() && fs.signature() == signature()) {
5588 return fs.offset();
5589 }
5590 }
5591 ResourceMark rm;
5592 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)" : "");
5593 #ifndef PRODUCT
5594 ik->print();
5595 tty->print_cr("all fields:");
5596 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5597 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());
5598 }
5599 #endif //PRODUCT
5600 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5601 return -1;
5602 }
5603
5604 void javaClasses_init() {
5605 JavaClasses::compute_offsets();
5606 JavaClasses::check_offsets();
5607 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5608 }