1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/altHashing.hpp"
32 #include "classfile/classLoaderData.inline.hpp"
33 #include "classfile/javaClasses.inline.hpp"
34 #include "classfile/javaClassesImpl.hpp"
35 #include "classfile/javaThreadStatus.hpp"
36 #include "classfile/moduleEntry.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/debugInfo.hpp"
43 #include "code/dependencyContext.hpp"
44 #include "code/pcDesc.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/interpreter.hpp"
47 #include "interpreter/linkResolver.hpp"
48 #include "jvm.h"
49 #include "logging/log.hpp"
50 #include "logging/logStream.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "memory/resourceArea.hpp"
53 #include "memory/universe.hpp"
54 #include "oops/fieldInfo.hpp"
55 #include "oops/fieldStreams.inline.hpp"
56 #include "oops/instanceKlass.inline.hpp"
57 #include "oops/instanceMirrorKlass.hpp"
58 #include "oops/klass.hpp"
59 #include "oops/klass.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/objArrayKlass.hpp"
62 #include "oops/objArrayOop.inline.hpp"
63 #include "oops/oopCast.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/symbol.hpp"
66 #include "oops/recordComponent.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiExport.hpp"
69 #include "prims/methodHandles.hpp"
70 #include "prims/resolvedMethodTable.hpp"
71 #include "runtime/continuationEntry.inline.hpp"
72 #include "runtime/continuationJavaClasses.inline.hpp"
73 #include "runtime/fieldDescriptor.inline.hpp"
74 #include "runtime/frame.inline.hpp"
75 #include "runtime/handles.inline.hpp"
76 #include "runtime/handshake.hpp"
77 #include "runtime/init.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/java.hpp"
80 #include "runtime/javaCalls.hpp"
81 #include "runtime/javaThread.hpp"
82 #include "runtime/jniHandles.inline.hpp"
83 #include "runtime/reflectionUtils.hpp"
84 #include "runtime/safepoint.hpp"
85 #include "runtime/safepointVerifiers.hpp"
86 #include "runtime/threadSMR.hpp"
87 #include "runtime/vframe.inline.hpp"
88 #include "runtime/vm_version.hpp"
89 #include "utilities/align.hpp"
90 #include "utilities/globalDefinitions.hpp"
91 #include "utilities/growableArray.hpp"
92 #include "utilities/preserveException.hpp"
93 #include "utilities/utf8.hpp"
94 #if INCLUDE_JVMCI
95 #include "jvmci/jvmciJavaClasses.hpp"
96 #endif
97
98 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
99 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
100
101 InjectedField JavaClasses::_injected_fields[] = {
102 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
103 };
104
105 // Register native methods of Object
106 void java_lang_Object::register_natives(TRAPS) {
107 InstanceKlass* obj = vmClasses::Object_klass();
108 Method::register_native(obj, vmSymbols::hashCode_name(),
109 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
110 Method::register_native(obj, vmSymbols::wait_name(),
111 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
112 Method::register_native(obj, vmSymbols::notify_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
114 Method::register_native(obj, vmSymbols::notifyAll_name(),
115 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
116 Method::register_native(obj, vmSymbols::clone_name(),
117 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
118 }
119
120 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
121 return _injected_fields[(int)id].compute_offset();
122 }
123
124 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
125 *field_count = 0;
126
127 vmSymbolID sid = vmSymbols::find_sid(class_name);
128 if (sid == vmSymbolID::NO_SID) {
129 // Only well known classes can inject fields
130 return nullptr;
131 }
132
133 int count = 0;
134 int start = -1;
135
136 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
137 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
138 count++; \
139 if (start == -1) { \
140 start = (int)InjectedFieldID::klass##_##name##_enum; \
141 } \
142 }
143 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
144 #undef LOOKUP_INJECTED_FIELD
145
146 if (start != -1) {
147 *field_count = count;
148 return _injected_fields + start;
149 }
150 return nullptr;
151 }
152
153
154 // Helpful routine for computing field offsets at run time rather than hardcoding them
155 // Finds local fields only, including static fields. Static field offsets are from the
156 // beginning of the mirror.
157 void JavaClasses::compute_offset(int &dest_offset,
158 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
159 bool is_static) {
160 fieldDescriptor fd;
161 if (ik == nullptr) {
162 ResourceMark rm;
163 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
164 vm_exit_during_initialization("Invalid layout of well-known class");
165 }
166
167 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
168 ResourceMark rm;
169 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
170 name_symbol->as_C_string(), signature_symbol->as_C_string());
171 #ifndef PRODUCT
172 // Prints all fields and offsets
173 Log(class) lt;
174 LogStream ls(lt.error());
175 ik->print_on(&ls);
176 #endif //PRODUCT
177 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
178 }
179 dest_offset = fd.offset();
180 }
181
182 // Overloading to pass name as a string.
183 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
184 const char* name_string, Symbol* signature_symbol,
185 bool is_static) {
186 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
187 if (name == nullptr) {
188 ResourceMark rm;
189 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
190 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
191 }
192 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
193 }
194
195 // java_lang_String
196
197 int java_lang_String::_value_offset;
198 int java_lang_String::_hash_offset;
199 int java_lang_String::_hashIsZero_offset;
200 int java_lang_String::_coder_offset;
201 int java_lang_String::_flags_offset;
202
203 bool java_lang_String::_initialized;
204
205
206 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
207 uint8_t* addr = flags_addr(java_string);
208 uint8_t value = Atomic::load(addr);
209 while ((value & flag_mask) == 0) {
210 uint8_t old_value = value;
211 value |= flag_mask;
212 value = Atomic::cmpxchg(addr, old_value, value);
213 if (value == old_value) return false; // Flag bit changed from 0 to 1.
214 }
215 return true; // Flag bit is already 1.
216 }
217
218 #define STRING_FIELDS_DO(macro) \
219 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
220 macro(_hash_offset, k, "hash", int_signature, false); \
221 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
222 macro(_coder_offset, k, "coder", byte_signature, false);
223
224 void java_lang_String::compute_offsets() {
225 if (_initialized) {
226 return;
227 }
228
229 InstanceKlass* k = vmClasses::String_klass();
230 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
231 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
232
233 _initialized = true;
234 }
235
236 #if INCLUDE_CDS
237 void java_lang_String::serialize_offsets(SerializeClosure* f) {
238 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
239 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
240 f->do_bool(&_initialized);
241 }
242 #endif
243
244 class CompactStringsFixup : public FieldClosure {
245 private:
246 bool _value;
247
248 public:
249 CompactStringsFixup(bool value) : _value(value) {}
250
251 void do_field(fieldDescriptor* fd) {
252 if (fd->name() == vmSymbols::compact_strings_name()) {
253 oop mirror = fd->field_holder()->java_mirror();
254 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
255 assert(mirror != nullptr, "String must have mirror already");
256 mirror->bool_field_put(fd->offset(), _value);
257 }
258 }
259 };
260
261 void java_lang_String::set_compact_strings(bool value) {
262 CompactStringsFixup fix(value);
263 vmClasses::String_klass()->do_local_static_fields(&fix);
264 }
265
266 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
267 assert(_initialized, "Must be initialized");
268 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
269
270 // Create the String object first, so there's a chance that the String
271 // and the char array it points to end up in the same cache line.
272 oop obj;
273 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
274
275 // Create the char array. The String object must be handlized here
276 // because GC can happen as a result of the allocation attempt.
277 Handle h_obj(THREAD, obj);
278 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
279 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
280
281 // Point the String at the char array
282 obj = h_obj();
283 set_value(obj, buffer);
284 // No need to zero the offset, allocation zero'ed the entire String object
285 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
286 return h_obj;
287 }
288
289 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
290 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
291 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
292 typeArrayOop buffer = value(h_obj());
293 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
294 if (is_latin1) {
295 for (int index = 0; index < length; index++) {
296 buffer->byte_at_put(index, (jbyte)unicode[index]);
297 }
298 } else {
299 for (int index = 0; index < length; index++) {
300 buffer->char_at_put(index, unicode[index]);
301 }
302 }
303
304 #ifdef ASSERT
305 {
306 ResourceMark rm;
307 char* expected = UNICODE::as_utf8(unicode, length);
308 char* actual = as_utf8_string(h_obj());
309 if (strcmp(expected, actual) != 0) {
310 fatal("Unicode conversion failure: %s --> %s", expected, actual);
311 }
312 }
313 #endif
314
315 return h_obj;
316 }
317
318 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
319 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
320 return h_obj();
321 }
322
323 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
324 if (utf8_str == nullptr) {
325 return Handle();
326 }
327 bool has_multibyte, is_latin1;
328 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
329 if (!CompactStrings) {
330 has_multibyte = true;
331 is_latin1 = false;
332 }
333
334 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
335 if (length > 0) {
336 if (!has_multibyte) {
337 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
338 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
339 } else if (is_latin1) {
340 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
341 } else {
342 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
343 }
344 }
345
346 #ifdef ASSERT
347 // This check is too strict when the input string is not a valid UTF8.
348 // For example, it may be created with arbitrary content via jni_NewStringUTF.
349 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
350 ResourceMark rm;
351 const char* expected = utf8_str;
352 char* actual = as_utf8_string(h_obj());
353 if (strcmp(expected, actual) != 0) {
354 fatal("String conversion failure: %s --> %s", expected, actual);
355 }
356 }
357 #endif
358
359 return h_obj;
360 }
361
362 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
363 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
364 return h_obj();
365 }
366
367 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
368 const char* utf8_str = (char*)symbol->bytes();
369 int utf8_len = symbol->utf8_length();
370
371 bool has_multibyte, is_latin1;
372 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
373 if (!CompactStrings) {
374 has_multibyte = true;
375 is_latin1 = false;
376 }
377
378 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
379 if (length > 0) {
380 if (!has_multibyte) {
381 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
382 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
383 } else if (is_latin1) {
384 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
385 } else {
386 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
387 }
388 }
389
390 #ifdef ASSERT
391 {
392 ResourceMark rm;
393 const char* expected = symbol->as_utf8();
394 char* actual = as_utf8_string(h_obj());
395 if (strncmp(expected, actual, utf8_len) != 0) {
396 fatal("Symbol conversion failure: %s --> %s", expected, actual);
397 }
398 }
399 #endif
400
401 return h_obj;
402 }
403
404 // Converts a C string to a Java String based on current encoding
405 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
406 assert(str != nullptr, "bad arguments");
407
408 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
409 static to_java_string_fn_t _to_java_string_fn = nullptr;
410
411 if (_to_java_string_fn == nullptr) {
412 void *lib_handle = os::native_java_library();
413 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
414 #if defined(_WIN32) && !defined(_WIN64)
415 if (_to_java_string_fn == nullptr) {
416 // On 32 bit Windows, also try __stdcall decorated name
417 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
418 }
419 #endif
420 if (_to_java_string_fn == nullptr) {
421 fatal("JNU_NewStringPlatform missing");
422 }
423 }
424
425 jstring js = nullptr;
426 {
427 JavaThread* thread = THREAD;
428 HandleMark hm(thread);
429 ThreadToNativeFromVM ttn(thread);
430 js = (_to_java_string_fn)(thread->jni_environment(), str);
431 }
432
433 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
434 JNIHandles::destroy_local(js); // destroy local JNIHandle.
435 return native_platform_string;
436 }
437
438 // Converts a Java String to a native C string that can be used for
439 // native OS calls.
440 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
441 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
442 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
443
444 if (_to_platform_string_fn == nullptr) {
445 void *lib_handle = os::native_java_library();
446 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
447 if (_to_platform_string_fn == nullptr) {
448 fatal("GetStringPlatformChars missing");
449 }
450 }
451
452 char *native_platform_string;
453 jstring js;
454 { JavaThread* thread = THREAD;
455 js = (jstring) JNIHandles::make_local(thread, java_string());
456 HandleMark hm(thread);
457 ThreadToNativeFromVM ttn(thread);
458 JNIEnv *env = thread->jni_environment();
459 bool is_copy;
460 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
461 assert(is_copy == JNI_TRUE, "is_copy value changed");
462 }
463
464 // Uses a store barrier and therefore needs to be in vm state
465 JNIHandles::destroy_local(js);
466
467 return native_platform_string;
468 }
469
470 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
471 ResourceMark rm(THREAD);
472 return create_from_str(java_name->as_klass_external_name(), THREAD);
473 }
474
475 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
476 jchar* result = as_unicode_string_or_null(java_string, length);
477 if (result == nullptr) {
478 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
479 }
480 return result;
481 }
482
483 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
484 typeArrayOop value = java_lang_String::value(java_string);
485 length = java_lang_String::length(java_string, value);
486 bool is_latin1 = java_lang_String::is_latin1(java_string);
487
488 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
489 if (result != nullptr) {
490 if (!is_latin1) {
491 for (int index = 0; index < length; index++) {
492 result[index] = value->char_at(index);
493 }
494 } else {
495 for (int index = 0; index < length; index++) {
496 result[index] = ((jchar) value->byte_at(index)) & 0xff;
497 }
498 }
499 }
500 return result;
501 }
502
503 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
504 // The hash and hashIsZero fields are subject to a benign data race,
505 // making it crucial to ensure that any observable result of the
506 // calculation in this method stays correct under any possible read of
507 // these fields. Necessary restrictions to allow this to be correct
508 // without explicit memory fences or similar concurrency primitives is
509 // that we can ever only write to one of these two fields for a given
510 // String instance, and that the computation is idempotent and derived
511 // from immutable state
512 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
513 if (java_lang_String::hash_is_set(java_string)) {
514 return java_string->int_field(_hash_offset);
515 }
516
517 typeArrayOop value = java_lang_String::value(java_string);
518 int length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 unsigned int hash = 0;
522 if (length > 0) {
523 if (is_latin1) {
524 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
525 } else {
526 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
527 }
528 }
529
530 if (update) {
531 if (hash != 0) {
532 java_string->int_field_put(_hash_offset, hash);
533 } else {
534 java_string->bool_field_put(_hashIsZero_offset, true);
535 }
536 }
537 return hash;
538 }
539
540 unsigned int java_lang_String::hash_code(oop java_string) {
541 return hash_code_impl(java_string, /*update=*/true);
542 }
543
544 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
545 return hash_code_impl(java_string, /*update=*/false);
546 }
547
548
549 char* java_lang_String::as_quoted_ascii(oop java_string) {
550 typeArrayOop value = java_lang_String::value(java_string);
551 int length = java_lang_String::length(java_string, value);
552 bool is_latin1 = java_lang_String::is_latin1(java_string);
553
554 if (length == 0) return nullptr;
555
556 char* result;
557 int result_length;
558 if (!is_latin1) {
559 jchar* base = value->char_at_addr(0);
560 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
561 result = NEW_RESOURCE_ARRAY(char, result_length);
562 UNICODE::as_quoted_ascii(base, length, result, result_length);
563 } else {
564 jbyte* base = value->byte_at_addr(0);
565 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
566 result = NEW_RESOURCE_ARRAY(char, result_length);
567 UNICODE::as_quoted_ascii(base, length, result, result_length);
568 }
569 assert(result_length >= length + 1, "must not be shorter");
570 assert(result_length == (int)strlen(result) + 1, "must match");
571 return result;
572 }
573
574 Symbol* java_lang_String::as_symbol(oop java_string) {
575 typeArrayOop value = java_lang_String::value(java_string);
576 int length = java_lang_String::length(java_string, value);
577 bool is_latin1 = java_lang_String::is_latin1(java_string);
578 if (!is_latin1) {
579 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
580 Symbol* sym = SymbolTable::new_symbol(base, length);
581 return sym;
582 } else {
583 ResourceMark rm;
584 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
585 const char* base = UNICODE::as_utf8(position, length);
586 Symbol* sym = SymbolTable::new_symbol(base, length);
587 return sym;
588 }
589 }
590
591 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
592 typeArrayOop value = java_lang_String::value(java_string);
593 int length = java_lang_String::length(java_string, value);
594 bool is_latin1 = java_lang_String::is_latin1(java_string);
595 if (!is_latin1) {
596 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
597 return SymbolTable::probe_unicode(base, length);
598 } else {
599 ResourceMark rm;
600 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
601 const char* base = UNICODE::as_utf8(position, length);
602 return SymbolTable::probe(base, length);
603 }
604 }
605
606 int 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 int 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 char* java_lang_String::as_utf8_string(oop java_string) {
626 int length;
627 return as_utf8_string(java_string, length);
628 }
629
630 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
631 typeArrayOop value = java_lang_String::value(java_string);
632 length = java_lang_String::length(java_string, value);
633 bool is_latin1 = java_lang_String::is_latin1(java_string);
634 if (!is_latin1) {
635 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
636 return UNICODE::as_utf8(position, length);
637 } else {
638 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
639 return UNICODE::as_utf8(position, length);
640 }
641 }
642
643 // Uses a provided buffer if it's sufficiently large, otherwise allocates
644 // a resource array to fit
645 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
646 typeArrayOop value = java_lang_String::value(java_string);
647 int len = java_lang_String::length(java_string, value);
648 bool is_latin1 = java_lang_String::is_latin1(java_string);
649 if (!is_latin1) {
650 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
651 utf8_len = UNICODE::utf8_length(position, len);
652 if (utf8_len >= buflen) {
653 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
654 }
655 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
656 } else {
657 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
658 utf8_len = UNICODE::utf8_length(position, len);
659 if (utf8_len >= buflen) {
660 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
661 }
662 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
663 }
664 }
665
666 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
667 assert(value_equals(value, java_lang_String::value(java_string)),
668 "value must be same as java_lang_String::value(java_string)");
669 int length = java_lang_String::length(java_string, value);
670 bool is_latin1 = java_lang_String::is_latin1(java_string);
671 if (!is_latin1) {
672 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
673 return UNICODE::as_utf8(position, length, buf, buflen);
674 } else {
675 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
676 return UNICODE::as_utf8(position, length, buf, buflen);
677 }
678 }
679
680 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
681 typeArrayOop value = java_lang_String::value(java_string);
682 return as_utf8_string(java_string, value, buf, buflen);
683 }
684
685 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
686 typeArrayOop value = java_lang_String::value(java_string);
687 bool is_latin1 = java_lang_String::is_latin1(java_string);
688 assert(start + len <= java_lang_String::length(java_string), "just checking");
689 if (!is_latin1) {
690 jchar* position = value->char_at_addr(start);
691 return UNICODE::as_utf8(position, len);
692 } else {
693 jbyte* position = value->byte_at_addr(start);
694 return UNICODE::as_utf8(position, len);
695 }
696 }
697
698 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
699 assert(value_equals(value, java_lang_String::value(java_string)),
700 "value must be same as java_lang_String::value(java_string)");
701 assert(start + len <= java_lang_String::length(java_string), "just checking");
702 bool is_latin1 = java_lang_String::is_latin1(java_string);
703 if (!is_latin1) {
704 jchar* position = value->char_at_addr(start);
705 return UNICODE::as_utf8(position, len, buf, buflen);
706 } else {
707 jbyte* position = value->byte_at_addr(start);
708 return UNICODE::as_utf8(position, len, buf, buflen);
709 }
710 }
711
712 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
713 assert(java_string->klass() == vmClasses::String_klass(),
714 "must be java_string");
715 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
716 int length = java_lang_String::length(java_string, value);
717 if (length != len) {
718 return false;
719 }
720 bool is_latin1 = java_lang_String::is_latin1(java_string);
721 if (!is_latin1) {
722 for (int i = 0; i < len; i++) {
723 if (value->char_at(i) != chars[i]) {
724 return false;
725 }
726 }
727 } else {
728 for (int i = 0; i < len; i++) {
729 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
730 return false;
731 }
732 }
733 }
734 return true;
735 }
736
737 bool java_lang_String::equals(oop str1, oop str2) {
738 assert(str1->klass() == vmClasses::String_klass(),
739 "must be java String");
740 assert(str2->klass() == vmClasses::String_klass(),
741 "must be java String");
742 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
743 bool is_latin1 = java_lang_String::is_latin1(str1);
744 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
745 bool is_latin2 = java_lang_String::is_latin1(str2);
746
747 if (is_latin1 != is_latin2) {
748 // Strings with different coders are never equal.
749 return false;
750 }
751 return value_equals(value1, value2);
752 }
753
754 void java_lang_String::print(oop java_string, outputStream* st) {
755 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
756 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
757
758 if (value == nullptr) {
759 // This can happen if, e.g., printing a String
760 // object before its initializer has been called
761 st->print("nullptr");
762 return;
763 }
764
765 int length = java_lang_String::length(java_string, value);
766 bool is_latin1 = java_lang_String::is_latin1(java_string);
767
768 st->print("\"");
769 for (int index = 0; index < length; index++) {
770 jchar c = (!is_latin1) ? value->char_at(index) :
771 ((jchar) value->byte_at(index)) & 0xff;
772 if (c < ' ') {
773 st->print("\\x%02X", c); // print control characters e.g. \x0A
774 } else {
775 st->print("%c", c);
776 }
777 }
778 st->print("\"");
779 }
780
781 // java_lang_Class
782
783 int java_lang_Class::_klass_offset;
784 int java_lang_Class::_array_klass_offset;
785 int java_lang_Class::_oop_size_offset;
786 int java_lang_Class::_static_oop_field_count_offset;
787 int java_lang_Class::_class_loader_offset;
788 int java_lang_Class::_module_offset;
789 int java_lang_Class::_protection_domain_offset;
790 int java_lang_Class::_component_mirror_offset;
791 int java_lang_Class::_init_lock_offset;
792 int java_lang_Class::_signers_offset;
793 int java_lang_Class::_name_offset;
794 int java_lang_Class::_source_file_offset;
795 int java_lang_Class::_classData_offset;
796 int java_lang_Class::_classRedefinedCount_offset;
797
798 bool java_lang_Class::_offsets_computed = false;
799 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
800 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
801
802 #ifdef ASSERT
803 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
804 assert(fd->has_initial_value(), "caller should have checked this");
805 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
806 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
807 }
808 #endif
809
810 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
811 DEBUG_ONLY(assert_valid_static_string_field(fd);)
812 oop string = fd->string_initial_value(CHECK);
813 mirror()->obj_field_put(fd->offset(), string);
814 }
815
816 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
817 assert(fd->has_initial_value(), "caller should have checked this");
818 BasicType t = fd->field_type();
819 switch (t) {
820 case T_BYTE:
821 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
822 break;
823 case T_BOOLEAN:
824 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
825 break;
826 case T_CHAR:
827 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
828 break;
829 case T_SHORT:
830 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
831 break;
832 case T_INT:
833 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
834 break;
835 case T_FLOAT:
836 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
837 break;
838 case T_DOUBLE:
839 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
840 break;
841 case T_LONG:
842 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
843 break;
844 default:
845 // Illegal ConstantValue attribute in class file should have been
846 // caught during classfile parsing.
847 ShouldNotReachHere();
848 }
849 }
850
851 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
852 assert(mirror.not_null() && fd->is_static(), "just checking");
853 if (fd->has_initial_value()) {
854 if (fd->field_type() != T_OBJECT) {
855 initialize_static_primitive_field(fd, mirror);
856 } else {
857 initialize_static_string_field(fd, mirror, CHECK);
858 }
859 }
860 }
861
862 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
863 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
864
865 // If the offset was read from the shared archive, it was fixed up already
866 if (!k->is_shared()) {
867 if (k->is_instance_klass()) {
868 // During bootstrap, java.lang.Class wasn't loaded so static field
869 // offsets were computed without the size added it. Go back and
870 // update all the static field offsets to included the size.
871
872 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
873 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
874 // static fields offsets are updated in this array before reencoding everything into
875 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
876
877 int java_fields;
878 int injected_fields;
879 InstanceKlass* ik = InstanceKlass::cast(k);
880 GrowableArray<FieldInfo>* fields =
881 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
882 &java_fields, &injected_fields);
883 for (int i = 0; i < fields->length(); i++) {
884 FieldInfo* fi = fields->adr_at(i);
885 if (fi->access_flags().is_static()) {
886 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
887 }
888 }
889 Array<u1>* old_stream = ik->fieldinfo_stream();
890 assert(fields->length() == (java_fields + injected_fields), "Must be");
891 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
892 ik->set_fieldinfo_stream(new_fis);
893 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
894 }
895 }
896
897 if (k->is_shared() && k->has_archived_mirror_index()) {
898 if (ArchiveHeapLoader::is_in_use()) {
899 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
900 assert(present, "Missing archived mirror for %s", k->external_name());
901 return;
902 } else {
903 k->clear_java_mirror_handle();
904 k->clear_archived_mirror_index();
905 }
906 }
907 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
908 }
909
910 void java_lang_Class::initialize_mirror_fields(Klass* k,
911 Handle mirror,
912 Handle protection_domain,
913 Handle classData,
914 TRAPS) {
915 // Allocate a simple java object for a lock.
916 // This needs to be a java object because during class initialization
917 // it can be held across a java call.
918 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
919 set_init_lock(mirror(), r);
920
921 // Set protection domain also
922 set_protection_domain(mirror(), protection_domain());
923
924 // Initialize static fields
925 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
926
927 // Set classData
928 set_class_data(mirror(), classData());
929 }
930
931 // Set the java.lang.Module module field in the java_lang_Class mirror
932 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
933 if (module.is_null()) {
934 // During startup, the module may be null only if java.base has not been defined yet.
935 // Put the class on the fixup_module_list to patch later when the java.lang.Module
936 // for java.base is known. But note that since we captured the null module another
937 // thread may have completed that initialization.
938
939 bool javabase_was_defined = false;
940 {
941 MutexLocker m1(current, Module_lock);
942 // Keep list of classes needing java.base module fixup
943 if (!ModuleEntryTable::javabase_defined()) {
944 assert(k->java_mirror() != nullptr, "Class's mirror is null");
945 k->class_loader_data()->inc_keep_alive();
946 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
947 fixup_module_field_list()->push(k);
948 } else {
949 javabase_was_defined = true;
950 }
951 }
952
953 // If java.base was already defined then patch this particular class with java.base.
954 if (javabase_was_defined) {
955 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
956 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
957 "Setting class module field, " JAVA_BASE_NAME " should be defined");
958 Handle javabase_handle(current, javabase_entry->module());
959 set_module(mirror(), javabase_handle());
960 }
961 } else {
962 assert(Universe::is_module_initialized() ||
963 (ModuleEntryTable::javabase_defined() &&
964 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
965 "Incorrect java.lang.Module specification while creating mirror");
966 set_module(mirror(), module());
967 }
968 }
969
970 // Statically allocate fixup lists because they always get created.
971 void java_lang_Class::allocate_fixup_lists() {
972 GrowableArray<Klass*>* mirror_list =
973 new (mtClass) GrowableArray<Klass*>(40, mtClass);
974 set_fixup_mirror_list(mirror_list);
975
976 GrowableArray<Klass*>* module_list =
977 new (mtModule) GrowableArray<Klass*>(500, mtModule);
978 set_fixup_module_field_list(module_list);
979 }
980
981 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
982 Handle& mirror, Handle& comp_mirror, TRAPS) {
983 // Allocate mirror (java.lang.Class instance)
984 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
985 mirror = Handle(THREAD, mirror_oop);
986
987 // Setup indirection from mirror->klass
988 set_klass(mirror(), k);
989
990 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
991 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
992
993 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
994
995 // It might also have a component mirror. This mirror must already exist.
996 if (k->is_array_klass()) {
997 if (k->is_typeArray_klass()) {
998 BasicType type = TypeArrayKlass::cast(k)->element_type();
999 if (is_scratch) {
1000 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1001 } else {
1002 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1003 }
1004 } else {
1005 assert(k->is_objArray_klass(), "Must be");
1006 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1007 assert(element_klass != nullptr, "Must have an element klass");
1008 if (is_scratch) {
1009 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1010 } else {
1011 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1012 }
1013 }
1014 assert(comp_mirror() != nullptr, "must have a mirror");
1015
1016 // Two-way link between the array klass and its component mirror:
1017 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1018 set_component_mirror(mirror(), comp_mirror());
1019 // See below for ordering dependencies between field array_klass in component mirror
1020 // and java_mirror in this klass.
1021 } else {
1022 assert(k->is_instance_klass(), "Must be");
1023
1024 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1025 if (HAS_PENDING_EXCEPTION) {
1026 // If any of the fields throws an exception like OOM remove the klass field
1027 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1028 // This mirror looks like a primitive type, which logically it is because it
1029 // it represents no class.
1030 set_klass(mirror(), nullptr);
1031 return;
1032 }
1033 }
1034 }
1035
1036 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1037 Handle module, Handle protection_domain,
1038 Handle classData, TRAPS) {
1039 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1040 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1041
1042 // Use this moment of initialization to cache modifier_flags also,
1043 // to support Class.getModifiers(). Instance classes recalculate
1044 // the cached flags after the class file is parsed, but before the
1045 // class is put into the system dictionary.
1046 int computed_modifiers = k->compute_modifier_flags();
1047 k->set_modifier_flags(computed_modifiers);
1048 // Class_klass has to be loaded because it is used to allocate
1049 // the mirror.
1050 if (vmClasses::Class_klass_loaded()) {
1051 Handle mirror;
1052 Handle comp_mirror;
1053
1054 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1055
1056 // set the classLoader field in the java_lang_Class instance
1057 assert(class_loader() == k->class_loader(), "should be same");
1058 set_class_loader(mirror(), class_loader());
1059
1060 // Setup indirection from klass->mirror
1061 // after any exceptions can happen during allocations.
1062 k->set_java_mirror(mirror);
1063
1064 // Set the module field in the java_lang_Class instance. This must be done
1065 // after the mirror is set.
1066 set_mirror_module_field(THREAD, k, mirror, module);
1067
1068 if (comp_mirror() != nullptr) {
1069 // Set after k->java_mirror() is published, because compiled code running
1070 // concurrently doesn't expect a k to have a null java_mirror.
1071 release_set_array_klass(comp_mirror(), k);
1072 }
1073 if (CDSConfig::is_dumping_heap()) {
1074 create_scratch_mirror(k, CHECK);
1075 }
1076 } else {
1077 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1078 fixup_mirror_list()->push(k);
1079 }
1080 }
1081
1082 #if INCLUDE_CDS_JAVA_HEAP
1083 // The "scratch mirror" stores the states of the mirror object that can be
1084 // decided at dump time (such as the initial values of the static fields, the
1085 // component mirror, etc). At runtime, more information is added to it by
1086 // java_lang_Class::restore_archived_mirror().
1087 //
1088 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1089 // produces the same result as /*runtime*/create_mirror().
1090 //
1091 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1092 // latter may contain dumptime-specific information that cannot be archived
1093 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1094 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1095 if (k->class_loader() != nullptr &&
1096 k->class_loader() != SystemDictionary::java_platform_loader() &&
1097 k->class_loader() != SystemDictionary::java_system_loader()) {
1098 // We only archive the mirrors of classes loaded by the built-in loaders
1099 return;
1100 }
1101
1102 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1103 Handle mirror;
1104 Handle comp_mirror;
1105 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1106
1107 if (comp_mirror() != nullptr) {
1108 release_set_array_klass(comp_mirror(), k);
1109 }
1110
1111 HeapShared::set_scratch_java_mirror(k, mirror());
1112 }
1113
1114 // Returns true if the mirror is updated, false if no archived mirror
1115 // data is present. After the archived mirror object is restored, the
1116 // shared klass' _has_raw_archived_mirror flag is cleared.
1117 bool java_lang_Class::restore_archived_mirror(Klass *k,
1118 Handle class_loader, Handle module,
1119 Handle protection_domain, TRAPS) {
1120 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1121 // see more details in vmClasses::resolve_all().
1122 if (!vmClasses::Class_klass_loaded()) {
1123 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1124 fixup_mirror_list()->push(k);
1125 return true;
1126 }
1127
1128 oop m = k->archived_java_mirror();
1129 assert(m != nullptr, "must have stored non-null archived mirror");
1130
1131 // Sanity: clear it now to prevent re-initialization if any of the following fails
1132 k->clear_archived_mirror_index();
1133
1134 // mirror is archived, restore
1135 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1136 assert(as_Klass(m) == k, "must be");
1137 Handle mirror(THREAD, m);
1138
1139 if (!k->is_array_klass()) {
1140 // - local static final fields with initial values were initialized at dump time
1141
1142 // create the init_lock
1143 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1144 set_init_lock(mirror(), r);
1145
1146 if (protection_domain.not_null()) {
1147 set_protection_domain(mirror(), protection_domain());
1148 }
1149 }
1150
1151 assert(class_loader() == k->class_loader(), "should be same");
1152 if (class_loader.not_null()) {
1153 set_class_loader(mirror(), class_loader());
1154 }
1155
1156 k->set_java_mirror(mirror);
1157
1158 set_mirror_module_field(THREAD, k, mirror, module);
1159
1160 if (log_is_enabled(Trace, cds, heap, mirror)) {
1161 ResourceMark rm(THREAD);
1162 log_trace(cds, heap, mirror)(
1163 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1164 }
1165
1166 return true;
1167 }
1168 #endif // INCLUDE_CDS_JAVA_HEAP
1169
1170 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1171 assert(_module_offset != 0, "must have been computed already");
1172 set_module(k->java_mirror(), module());
1173 }
1174
1175 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1176 assert(_oop_size_offset != 0, "must be set");
1177 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1178 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1179 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1180 }
1181
1182 int java_lang_Class::static_oop_field_count(oop java_class) {
1183 assert(_static_oop_field_count_offset != 0, "must be set");
1184 return java_class->int_field(_static_oop_field_count_offset);
1185 }
1186
1187 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1188 assert(_static_oop_field_count_offset != 0, "must be set");
1189 java_class->int_field_put(_static_oop_field_count_offset, size);
1190 }
1191
1192 oop java_lang_Class::protection_domain(oop java_class) {
1193 assert(_protection_domain_offset != 0, "must be set");
1194 return java_class->obj_field(_protection_domain_offset);
1195 }
1196 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1197 assert(_protection_domain_offset != 0, "must be set");
1198 java_class->obj_field_put(_protection_domain_offset, pd);
1199 }
1200
1201 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1202 assert(_component_mirror_offset != 0, "must be set");
1203 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1204 }
1205 oop java_lang_Class::component_mirror(oop java_class) {
1206 assert(_component_mirror_offset != 0, "must be set");
1207 return java_class->obj_field(_component_mirror_offset);
1208 }
1209
1210 oop java_lang_Class::init_lock(oop java_class) {
1211 assert(_init_lock_offset != 0, "must be set");
1212 return java_class->obj_field(_init_lock_offset);
1213 }
1214 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1215 assert(_init_lock_offset != 0, "must be set");
1216 java_class->obj_field_put(_init_lock_offset, init_lock);
1217 }
1218
1219 objArrayOop java_lang_Class::signers(oop java_class) {
1220 assert(_signers_offset != 0, "must be set");
1221 return (objArrayOop)java_class->obj_field(_signers_offset);
1222 }
1223 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1224 assert(_signers_offset != 0, "must be set");
1225 java_class->obj_field_put(_signers_offset, signers);
1226 }
1227
1228 oop java_lang_Class::class_data(oop java_class) {
1229 assert(_classData_offset != 0, "must be set");
1230 return java_class->obj_field(_classData_offset);
1231 }
1232 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1233 assert(_classData_offset != 0, "must be set");
1234 java_class->obj_field_put(_classData_offset, class_data);
1235 }
1236
1237 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1238 assert(_class_loader_offset != 0, "offsets should have been initialized");
1239 java_class->obj_field_put(_class_loader_offset, loader);
1240 }
1241
1242 oop java_lang_Class::class_loader(oop java_class) {
1243 assert(_class_loader_offset != 0, "must be set");
1244 return java_class->obj_field(_class_loader_offset);
1245 }
1246
1247 oop java_lang_Class::module(oop java_class) {
1248 assert(_module_offset != 0, "must be set");
1249 return java_class->obj_field(_module_offset);
1250 }
1251
1252 void java_lang_Class::set_module(oop java_class, oop module) {
1253 assert(_module_offset != 0, "must be set");
1254 java_class->obj_field_put(_module_offset, module);
1255 }
1256
1257 oop java_lang_Class::name(Handle java_class, TRAPS) {
1258 assert(_name_offset != 0, "must be set");
1259 oop o = java_class->obj_field(_name_offset);
1260 if (o == nullptr) {
1261 o = StringTable::intern(as_external_name(java_class()), THREAD);
1262 java_class->obj_field_put(_name_offset, o);
1263 }
1264 return o;
1265 }
1266
1267 oop java_lang_Class::source_file(oop java_class) {
1268 assert(_source_file_offset != 0, "must be set");
1269 return java_class->obj_field(_source_file_offset);
1270 }
1271
1272 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1273 assert(_source_file_offset != 0, "must be set");
1274 java_class->obj_field_put(_source_file_offset, source_file);
1275 }
1276
1277 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1278 // This should be improved by adding a field at the Java level or by
1279 // introducing a new VM klass (see comment in ClassFileParser)
1280 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1281 if (type != T_VOID) {
1282 Klass* aklass = Universe::typeArrayKlass(type);
1283 assert(aklass != nullptr, "correct bootstrap");
1284 release_set_array_klass(java_class, aklass);
1285 }
1286 #ifdef ASSERT
1287 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1288 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1289 #endif
1290 return java_class;
1291 }
1292
1293 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1294 assert(is_instance(java_class), "must be a Class object");
1295 java_class->metadata_field_put(_klass_offset, klass);
1296 }
1297
1298
1299 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1300 assert(is_instance(java_class), "must be a Class object");
1301 Symbol* name = nullptr;
1302 bool is_instance = false;
1303 if (is_primitive(java_class)) {
1304 name = vmSymbols::type_signature(primitive_type(java_class));
1305 } else {
1306 Klass* k = as_Klass(java_class);
1307 is_instance = k->is_instance_klass();
1308 name = k->name();
1309 }
1310 if (name == nullptr) {
1311 st->print("<null>");
1312 return;
1313 }
1314 if (is_instance) st->print("L");
1315 st->write((char*) name->base(), (int) name->utf8_length());
1316 if (is_instance) st->print(";");
1317 }
1318
1319 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1320 assert(is_instance(java_class), "must be a Class object");
1321 Symbol* name;
1322 if (is_primitive(java_class)) {
1323 name = vmSymbols::type_signature(primitive_type(java_class));
1324 // Because this can create a new symbol, the caller has to decrement
1325 // the refcount, so make adjustment here and below for symbols returned
1326 // that are not created or incremented due to a successful lookup.
1327 name->increment_refcount();
1328 } else {
1329 Klass* k = as_Klass(java_class);
1330 if (!k->is_instance_klass()) {
1331 name = k->name();
1332 name->increment_refcount();
1333 } else {
1334 ResourceMark rm;
1335 const char* sigstr = k->signature_name();
1336 int siglen = (int) strlen(sigstr);
1337 if (!intern_if_not_found) {
1338 name = SymbolTable::probe(sigstr, siglen);
1339 } else {
1340 name = SymbolTable::new_symbol(sigstr, siglen);
1341 }
1342 }
1343 }
1344 return name;
1345 }
1346
1347 // Returns the Java name for this Java mirror (Resource allocated)
1348 // See Klass::external_name().
1349 // For primitive type Java mirrors, its type name is returned.
1350 const char* java_lang_Class::as_external_name(oop java_class) {
1351 assert(is_instance(java_class), "must be a Class object");
1352 const char* name = nullptr;
1353 if (is_primitive(java_class)) {
1354 name = type2name(primitive_type(java_class));
1355 } else {
1356 name = as_Klass(java_class)->external_name();
1357 }
1358 if (name == nullptr) {
1359 name = "<null>";
1360 }
1361 return name;
1362 }
1363
1364 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1365 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1366 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1367 return k;
1368 }
1369
1370
1371 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1372 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1373 java_class->release_metadata_field_put(_array_klass_offset, klass);
1374 }
1375
1376
1377 BasicType java_lang_Class::primitive_type(oop java_class) {
1378 assert(is_primitive(java_class), "just checking");
1379 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1380 BasicType type = T_VOID;
1381 if (ak != nullptr) {
1382 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1383 type = ArrayKlass::cast(ak)->element_type();
1384 } else {
1385 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1386 }
1387 #ifdef ASSERT
1388 if (CDSConfig::is_dumping_heap()) {
1389 oop mirror = Universe::java_mirror(type);
1390 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1391 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1392 } else {
1393 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1394 }
1395 #endif
1396 return type;
1397 }
1398
1399 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1400 assert(is_instance(java_class), "must be a Class object");
1401 if (is_primitive(java_class)) {
1402 if (reference_klass != nullptr)
1403 (*reference_klass) = nullptr;
1404 return primitive_type(java_class);
1405 } else {
1406 if (reference_klass != nullptr)
1407 (*reference_klass) = as_Klass(java_class);
1408 return T_OBJECT;
1409 }
1410 }
1411
1412
1413 oop java_lang_Class::primitive_mirror(BasicType t) {
1414 oop mirror = Universe::java_mirror(t);
1415 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1416 assert(is_primitive(mirror), "must be primitive");
1417 return mirror;
1418 }
1419
1420 #define CLASS_FIELDS_DO(macro) \
1421 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1422 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1423 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1424 macro(_module_offset, k, "module", module_signature, false); \
1425 macro(_name_offset, k, "name", string_signature, false); \
1426 macro(_classData_offset, k, "classData", object_signature, false);
1427
1428 void java_lang_Class::compute_offsets() {
1429 if (_offsets_computed) {
1430 return;
1431 }
1432
1433 _offsets_computed = true;
1434
1435 InstanceKlass* k = vmClasses::Class_klass();
1436 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1437
1438 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1439 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1440 // GC treats them the same.
1441 _init_lock_offset = _component_mirror_offset;
1442
1443 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1444 }
1445
1446 #if INCLUDE_CDS
1447 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1448 f->do_bool(&_offsets_computed);
1449 f->do_u4((u4*)&_init_lock_offset);
1450
1451 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1452
1453 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1454 }
1455 #endif
1456
1457 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1458 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1459 return the_class_mirror->int_field(_classRedefinedCount_offset);
1460 }
1461
1462 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1463 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1464 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1465 }
1466
1467
1468 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1469 // platform thread structure, and a eetop offset which was used for thread
1470 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1471 // merged, so in the HotSpot VM we just use the eetop field for the thread
1472 // instead of the privateInfo_offset.
1473 //
1474 // Note: The stackSize field is only present starting in 1.4.
1475
1476 int java_lang_Thread_FieldHolder::_group_offset;
1477 int java_lang_Thread_FieldHolder::_priority_offset;
1478 int java_lang_Thread_FieldHolder::_stackSize_offset;
1479 int java_lang_Thread_FieldHolder::_daemon_offset;
1480 int java_lang_Thread_FieldHolder::_thread_status_offset;
1481
1482 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1483 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1484 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1485 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1486 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1487 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1488
1489 void java_lang_Thread_FieldHolder::compute_offsets() {
1490 assert(_group_offset == 0, "offsets should be initialized only once");
1491
1492 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1493 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1494 }
1495
1496 #if INCLUDE_CDS
1497 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1498 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1499 }
1500 #endif
1501
1502 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1503 return holder->obj_field(_group_offset);
1504 }
1505
1506 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1507 return (ThreadPriority)holder->int_field(_priority_offset);
1508 }
1509
1510 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1511 holder->int_field_put(_priority_offset, priority);
1512 }
1513
1514 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1515 return holder->long_field(_stackSize_offset);
1516 }
1517
1518 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1519 return holder->bool_field(_daemon_offset) != 0;
1520 }
1521
1522 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1523 assert(val, "daemon status is never turned off");
1524 holder->bool_field_put(_daemon_offset, val);
1525 }
1526
1527 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1528 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1529 }
1530
1531 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1532 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1533 }
1534
1535
1536 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1537
1538 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1539 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1540
1541 void java_lang_Thread_Constants::compute_offsets() {
1542 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1543
1544 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1545 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1546 }
1547
1548 #if INCLUDE_CDS
1549 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1550 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1551 }
1552 #endif
1553
1554 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1555 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1556 oop base = k->static_field_base_raw();
1557 return base->obj_field(_static_VTHREAD_GROUP_offset);
1558 }
1559
1560
1561 int java_lang_Thread::_holder_offset;
1562 int java_lang_Thread::_name_offset;
1563 int java_lang_Thread::_contextClassLoader_offset;
1564 int java_lang_Thread::_inheritedAccessControlContext_offset;
1565 int java_lang_Thread::_eetop_offset;
1566 int java_lang_Thread::_jvmti_thread_state_offset;
1567 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1568 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1569 int java_lang_Thread::_interrupted_offset;
1570 int java_lang_Thread::_interruptLock_offset;
1571 int java_lang_Thread::_tid_offset;
1572 int java_lang_Thread::_continuation_offset;
1573 int java_lang_Thread::_park_blocker_offset;
1574 int java_lang_Thread::_scopedValueBindings_offset;
1575 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1576
1577 #define THREAD_FIELDS_DO(macro) \
1578 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1579 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1580 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1581 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1582 macro(_eetop_offset, k, "eetop", long_signature, false); \
1583 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1584 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1585 macro(_tid_offset, k, "tid", long_signature, false); \
1586 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1587 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1588 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1589
1590 void java_lang_Thread::compute_offsets() {
1591 assert(_holder_offset == 0, "offsets should be initialized only once");
1592
1593 InstanceKlass* k = vmClasses::Thread_klass();
1594 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1595 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1596 }
1597
1598 #if INCLUDE_CDS
1599 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1600 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1601 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1602 }
1603 #endif
1604
1605 JavaThread* java_lang_Thread::thread(oop java_thread) {
1606 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1607 }
1608
1609 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1610 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1611 }
1612
1613 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1614 java_thread->address_field_put(_eetop_offset, (address)thread);
1615 }
1616
1617 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1618 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1619 }
1620
1621 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1622 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1623 }
1624
1625 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1626 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1627 }
1628
1629 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1630 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1631 }
1632
1633 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1634 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1635 int val = VTMS_transition_disable_count(java_thread);
1636 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1637 }
1638
1639 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1640 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1641 int val = VTMS_transition_disable_count(java_thread);
1642 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1643 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1644 }
1645
1646 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1647 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1648 }
1649
1650 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1651 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1652 }
1653
1654 int java_lang_Thread::is_in_VTMS_transition_offset() {
1655 return _jvmti_is_in_VTMS_transition_offset;
1656 }
1657
1658 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1659 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1660 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1661 }
1662
1663 oop java_lang_Thread::holder(oop java_thread) {
1664 // Note: may return null if the thread is still attaching
1665 return java_thread->obj_field(_holder_offset);
1666 }
1667 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1668 return java_thread->obj_field(_interruptLock_offset);
1669 }
1670
1671 bool java_lang_Thread::interrupted(oop java_thread) {
1672 // Make sure the caller can safely access oops.
1673 assert(Thread::current()->is_VM_thread() ||
1674 (JavaThread::current()->thread_state() != _thread_blocked &&
1675 JavaThread::current()->thread_state() != _thread_in_native),
1676 "Unsafe access to oop");
1677 return java_thread->bool_field_volatile(_interrupted_offset);
1678 }
1679
1680 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1681 // Make sure the caller can safely access oops.
1682 assert(Thread::current()->is_VM_thread() ||
1683 (JavaThread::current()->thread_state() != _thread_blocked &&
1684 JavaThread::current()->thread_state() != _thread_in_native),
1685 "Unsafe access to oop");
1686 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1687 }
1688
1689
1690 oop java_lang_Thread::name(oop java_thread) {
1691 return java_thread->obj_field(_name_offset);
1692 }
1693
1694
1695 void java_lang_Thread::set_name(oop java_thread, oop name) {
1696 java_thread->obj_field_put(_name_offset, name);
1697 }
1698
1699 // Convenience macros for setting and getting Thread fields that
1700 // are actually stored in the FieldHolder object of the thread.
1701 // The FieldHolder can be null whilst a thread is attaching via
1702 // JNI, and when the main thread is attaching.
1703
1704 // The default value should be the default/zero initialized value
1705 // of the field as it would be in java.lang.Thread.FieldHolder.
1706 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1707 { \
1708 oop holder = java_lang_Thread::holder(java_thread); \
1709 if (holder != nullptr) \
1710 return java_lang_Thread_FieldHolder::field(holder); \
1711 else \
1712 return default_val; \
1713 }
1714
1715 // We should never be trying to set a field of an attaching thread.
1716 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1717 { \
1718 oop holder = java_lang_Thread::holder(java_thread); \
1719 assert(holder != nullptr, "Thread not fully initialized"); \
1720 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1721 }
1722
1723
1724 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1725 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1726 }
1727
1728
1729 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1730 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1731 }
1732
1733
1734 oop java_lang_Thread::threadGroup(oop java_thread) {
1735 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1736 }
1737
1738
1739 bool java_lang_Thread::is_alive(oop java_thread) {
1740 JavaThread* thr = java_lang_Thread::thread(java_thread);
1741 return (thr != nullptr);
1742 }
1743
1744
1745 bool java_lang_Thread::is_daemon(oop java_thread) {
1746 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1747 }
1748
1749
1750 void java_lang_Thread::set_daemon(oop java_thread) {
1751 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1752 }
1753
1754 oop java_lang_Thread::context_class_loader(oop java_thread) {
1755 return java_thread->obj_field(_contextClassLoader_offset);
1756 }
1757
1758 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1759 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1760 }
1761
1762
1763 jlong java_lang_Thread::stackSize(oop java_thread) {
1764 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1765 }
1766
1767 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1768 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1769 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1770 }
1771
1772 // Read thread status value from threadStatus field in java.lang.Thread java class.
1773 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1774 // Make sure the caller is operating on behalf of the VM or is
1775 // running VM code (state == _thread_in_vm).
1776 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1777 JavaThread::current()->thread_state() == _thread_in_vm,
1778 "Java Thread is not running in vm");
1779 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1780 }
1781
1782 ByteSize java_lang_Thread::thread_id_offset() {
1783 return in_ByteSize(_tid_offset);
1784 }
1785
1786 oop java_lang_Thread::park_blocker(oop java_thread) {
1787 return java_thread->obj_field(_park_blocker_offset);
1788 }
1789
1790 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1791 ThreadsListHandle tlh(JavaThread::current());
1792 JavaThread* thread;
1793 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1794 if (is_virtual) {
1795 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1796 if (carrier_thread == nullptr) {
1797 return nullptr;
1798 }
1799 thread = java_lang_Thread::thread(carrier_thread);
1800 } else {
1801 thread = java_lang_Thread::thread(java_thread);
1802 }
1803 if (thread == nullptr) {
1804 return nullptr;
1805 }
1806
1807 class GetStackTraceClosure : public HandshakeClosure {
1808 public:
1809 const Handle _java_thread;
1810 int _depth;
1811 bool _retry_handshake;
1812 GrowableArray<Method*>* _methods;
1813 GrowableArray<int>* _bcis;
1814
1815 GetStackTraceClosure(Handle java_thread) :
1816 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1817 _methods(nullptr), _bcis(nullptr) {
1818 }
1819 ~GetStackTraceClosure() {
1820 delete _methods;
1821 delete _bcis;
1822 }
1823
1824 bool read_reset_retry() {
1825 bool ret = _retry_handshake;
1826 // If we re-execute the handshake this method need to return false
1827 // when the handshake cannot be performed. (E.g. thread terminating)
1828 _retry_handshake = false;
1829 return ret;
1830 }
1831
1832 void do_thread(Thread* th) {
1833 if (!Thread::current()->is_Java_thread()) {
1834 _retry_handshake = true;
1835 return;
1836 }
1837
1838 JavaThread* thread = JavaThread::cast(th);
1839
1840 if (!thread->has_last_Java_frame()) {
1841 return;
1842 }
1843
1844 bool carrier = false;
1845 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1846 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1847 const ContinuationEntry* ce = thread->vthread_continuation();
1848 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1849 return; // not mounted
1850 }
1851 } else {
1852 carrier = (thread->vthread_continuation() != nullptr);
1853 }
1854
1855 const int max_depth = MaxJavaStackTraceDepth;
1856 const bool skip_hidden = !ShowHiddenFrames;
1857
1858 // Pick minimum length that will cover most cases
1859 int init_length = 64;
1860 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1861 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1862
1863 int total_count = 0;
1864 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1865 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1866 vfst.next()) {
1867
1868 if (skip_hidden && (vfst.method()->is_hidden() ||
1869 vfst.method()->is_continuation_enter_intrinsic())) {
1870 continue;
1871 }
1872
1873 _methods->push(vfst.method());
1874 _bcis->push(vfst.bci());
1875 total_count++;
1876 }
1877
1878 _depth = total_count;
1879 }
1880 };
1881
1882 // Handshake with target
1883 ResourceMark rm(THREAD);
1884 HandleMark hm(THREAD);
1885 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1886 do {
1887 Handshake::execute(&gstc, &tlh, thread);
1888 } while (gstc.read_reset_retry());
1889
1890 // Stop if no stack trace is found.
1891 if (gstc._depth == 0) {
1892 return nullptr;
1893 }
1894
1895 // Convert to StackTraceElement array
1896 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1897 assert(k != nullptr, "must be loaded in 1.4+");
1898 if (k->should_be_initialized()) {
1899 k->initialize(CHECK_NULL);
1900 }
1901 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1902
1903 for (int i = 0; i < gstc._depth; i++) {
1904 methodHandle method(THREAD, gstc._methods->at(i));
1905 oop element = java_lang_StackTraceElement::create(method,
1906 gstc._bcis->at(i),
1907 CHECK_NULL);
1908 trace->obj_at_put(i, element);
1909 }
1910
1911 return trace();
1912 }
1913
1914 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1915 JavaThreadStatus status = get_thread_status(java_thread);
1916 switch (status) {
1917 case JavaThreadStatus::NEW : return "NEW";
1918 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1919 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1920 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1921 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1922 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1923 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1924 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1925 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1926 default : return "UNKNOWN";
1927 };
1928 }
1929 int java_lang_ThreadGroup::_parent_offset;
1930 int java_lang_ThreadGroup::_name_offset;
1931 int java_lang_ThreadGroup::_maxPriority_offset;
1932 int java_lang_ThreadGroup::_daemon_offset;
1933
1934 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1935 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1936 return java_thread_group->obj_field(_parent_offset);
1937 }
1938
1939 // ("name as oop" accessor is not necessary)
1940
1941 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1942 oop name = java_thread_group->obj_field(_name_offset);
1943 // ThreadGroup.name can be null
1944 if (name != nullptr) {
1945 return java_lang_String::as_utf8_string(name);
1946 }
1947 return nullptr;
1948 }
1949
1950 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1951 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1952 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1953 }
1954
1955 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1956 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1957 return java_thread_group->bool_field(_daemon_offset) != 0;
1958 }
1959
1960 #define THREADGROUP_FIELDS_DO(macro) \
1961 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1962 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1963 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1964 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
1965
1966 void java_lang_ThreadGroup::compute_offsets() {
1967 assert(_parent_offset == 0, "offsets should be initialized only once");
1968
1969 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1970 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1971 }
1972
1973 #if INCLUDE_CDS
1974 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1975 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1976 }
1977 #endif
1978
1979
1980 // java_lang_VirtualThread
1981
1982 int java_lang_VirtualThread::static_vthread_scope_offset;
1983 int java_lang_VirtualThread::_carrierThread_offset;
1984 int java_lang_VirtualThread::_continuation_offset;
1985 int java_lang_VirtualThread::_state_offset;
1986
1987 #define VTHREAD_FIELDS_DO(macro) \
1988 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
1989 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
1990 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1991 macro(_state_offset, k, "state", int_signature, false)
1992
1993
1994 void java_lang_VirtualThread::compute_offsets() {
1995 InstanceKlass* k = vmClasses::VirtualThread_klass();
1996 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1997 }
1998
1999 bool java_lang_VirtualThread::is_instance(oop obj) {
2000 return obj != nullptr && is_subclass(obj->klass());
2001 }
2002
2003 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2004 oop thread = vthread->obj_field(_carrierThread_offset);
2005 return thread;
2006 }
2007
2008 oop java_lang_VirtualThread::continuation(oop vthread) {
2009 oop cont = vthread->obj_field(_continuation_offset);
2010 return cont;
2011 }
2012
2013 int java_lang_VirtualThread::state(oop vthread) {
2014 return vthread->int_field_acquire(_state_offset);
2015 }
2016
2017 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2018 JavaThreadStatus status = JavaThreadStatus::NEW;
2019 switch (state & ~SUSPENDED) {
2020 case NEW:
2021 status = JavaThreadStatus::NEW;
2022 break;
2023 case STARTED:
2024 case RUNNING:
2025 case PARKING:
2026 case TIMED_PARKING:
2027 case UNPARKED:
2028 case YIELDING:
2029 case YIELDED:
2030 status = JavaThreadStatus::RUNNABLE;
2031 break;
2032 case PARKED:
2033 case PINNED:
2034 status = JavaThreadStatus::PARKED;
2035 break;
2036 case TIMED_PARKED:
2037 case TIMED_PINNED:
2038 status = JavaThreadStatus::PARKED_TIMED;
2039 break;
2040 case TERMINATED:
2041 status = JavaThreadStatus::TERMINATED;
2042 break;
2043 default:
2044 ShouldNotReachHere();
2045 }
2046 return status;
2047 }
2048
2049 #if INCLUDE_CDS
2050 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2051 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2052 }
2053 #endif
2054
2055 // java_lang_Throwable
2056
2057 int java_lang_Throwable::_backtrace_offset;
2058 int java_lang_Throwable::_detailMessage_offset;
2059 int java_lang_Throwable::_stackTrace_offset;
2060 int java_lang_Throwable::_depth_offset;
2061 int java_lang_Throwable::_cause_offset;
2062 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2063
2064 #define THROWABLE_FIELDS_DO(macro) \
2065 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2066 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2067 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2068 macro(_depth_offset, k, "depth", int_signature, false); \
2069 macro(_cause_offset, k, "cause", throwable_signature, false); \
2070 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2071
2072 void java_lang_Throwable::compute_offsets() {
2073 InstanceKlass* k = vmClasses::Throwable_klass();
2074 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2075 }
2076
2077 #if INCLUDE_CDS
2078 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2079 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2080 }
2081 #endif
2082
2083 oop java_lang_Throwable::unassigned_stacktrace() {
2084 InstanceKlass* ik = vmClasses::Throwable_klass();
2085 oop base = ik->static_field_base_raw();
2086 return base->obj_field(_static_unassigned_stacktrace_offset);
2087 }
2088
2089 oop java_lang_Throwable::backtrace(oop throwable) {
2090 return throwable->obj_field_acquire(_backtrace_offset);
2091 }
2092
2093
2094 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2095 throwable->release_obj_field_put(_backtrace_offset, value);
2096 }
2097
2098 int java_lang_Throwable::depth(oop throwable) {
2099 return throwable->int_field(_depth_offset);
2100 }
2101
2102 void java_lang_Throwable::set_depth(oop throwable, int value) {
2103 throwable->int_field_put(_depth_offset, value);
2104 }
2105
2106 oop java_lang_Throwable::message(oop throwable) {
2107 return throwable->obj_field(_detailMessage_offset);
2108 }
2109
2110 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2111 oop msg = java_lang_Throwable::message(throwable);
2112 const char* msg_utf8 = nullptr;
2113 if (msg != nullptr) {
2114 msg_utf8 = java_lang_String::as_utf8_string(msg);
2115 }
2116 return msg_utf8;
2117 }
2118
2119 oop java_lang_Throwable::cause(oop throwable) {
2120 return throwable->obj_field(_cause_offset);
2121 }
2122
2123 void java_lang_Throwable::set_message(oop throwable, oop value) {
2124 throwable->obj_field_put(_detailMessage_offset, value);
2125 }
2126
2127
2128 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2129 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2130 }
2131
2132 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2133 set_stacktrace(throwable, nullptr);
2134 }
2135
2136
2137 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2138 ResourceMark rm;
2139 Klass* k = throwable->klass();
2140 assert(k != nullptr, "just checking");
2141 st->print("%s", k->external_name());
2142 oop msg = message(throwable);
2143 if (msg != nullptr) {
2144 st->print(": %s", java_lang_String::as_utf8_string(msg));
2145 }
2146 }
2147
2148 // After this many redefines, the stack trace is unreliable.
2149 const int MAX_VERSION = USHRT_MAX;
2150
2151 static inline bool version_matches(Method* method, int version) {
2152 assert(version < MAX_VERSION, "version is too big");
2153 return method != nullptr && (method->constants()->version() == version);
2154 }
2155
2156 // This class provides a simple wrapper over the internal structure of
2157 // exception backtrace to insulate users of the backtrace from needing
2158 // to know what it looks like.
2159 // The code of this class is not GC safe. Allocations can only happen
2160 // in expand().
2161 class BacktraceBuilder: public StackObj {
2162 friend class BacktraceIterator;
2163 private:
2164 Handle _backtrace;
2165 objArrayOop _head;
2166 typeArrayOop _methods;
2167 typeArrayOop _bcis;
2168 objArrayOop _mirrors;
2169 typeArrayOop _names; // Needed to insulate method name against redefinition.
2170 // True if the top frame of the backtrace is omitted because it shall be hidden.
2171 bool _has_hidden_top_frame;
2172 int _index;
2173 NoSafepointVerifier _nsv;
2174
2175 enum {
2176 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2177 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2178 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2179 trace_names_offset = java_lang_Throwable::trace_names_offset,
2180 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2181 trace_next_offset = java_lang_Throwable::trace_next_offset,
2182 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2183 trace_size = java_lang_Throwable::trace_size,
2184 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2185 };
2186
2187 // get info out of chunks
2188 static typeArrayOop get_methods(objArrayHandle chunk) {
2189 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2190 assert(methods != nullptr, "method array should be initialized in backtrace");
2191 return methods;
2192 }
2193 static typeArrayOop get_bcis(objArrayHandle chunk) {
2194 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2195 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2196 return bcis;
2197 }
2198 static objArrayOop get_mirrors(objArrayHandle chunk) {
2199 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2200 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2201 return mirrors;
2202 }
2203 static typeArrayOop get_names(objArrayHandle chunk) {
2204 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2205 assert(names != nullptr, "names array should be initialized in backtrace");
2206 return names;
2207 }
2208 static bool has_hidden_top_frame(objArrayHandle chunk) {
2209 oop hidden = chunk->obj_at(trace_hidden_offset);
2210 return hidden != nullptr;
2211 }
2212
2213 public:
2214
2215 // constructor for new backtrace
2216 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2217 expand(CHECK);
2218 _backtrace = Handle(THREAD, _head);
2219 _index = 0;
2220 }
2221
2222 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2223 _methods = get_methods(backtrace);
2224 _bcis = get_bcis(backtrace);
2225 _mirrors = get_mirrors(backtrace);
2226 _names = get_names(backtrace);
2227 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2228 assert(_methods->length() == _bcis->length() &&
2229 _methods->length() == _mirrors->length() &&
2230 _mirrors->length() == _names->length(),
2231 "method and source information arrays should match");
2232
2233 // head is the preallocated backtrace
2234 _head = backtrace();
2235 _backtrace = Handle(thread, _head);
2236 _index = 0;
2237 }
2238
2239 void expand(TRAPS) {
2240 objArrayHandle old_head(THREAD, _head);
2241 PauseNoSafepointVerifier pnsv(&_nsv);
2242
2243 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2244 objArrayHandle new_head(THREAD, head);
2245
2246 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2247 typeArrayHandle new_methods(THREAD, methods);
2248
2249 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2250 typeArrayHandle new_bcis(THREAD, bcis);
2251
2252 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2253 objArrayHandle new_mirrors(THREAD, mirrors);
2254
2255 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2256 typeArrayHandle new_names(THREAD, names);
2257
2258 if (!old_head.is_null()) {
2259 old_head->obj_at_put(trace_next_offset, new_head());
2260 }
2261 new_head->obj_at_put(trace_methods_offset, new_methods());
2262 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2263 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2264 new_head->obj_at_put(trace_names_offset, new_names());
2265 new_head->obj_at_put(trace_hidden_offset, nullptr);
2266
2267 _head = new_head();
2268 _methods = new_methods();
2269 _bcis = new_bcis();
2270 _mirrors = new_mirrors();
2271 _names = new_names();
2272 _index = 0;
2273 }
2274
2275 oop backtrace() {
2276 return _backtrace();
2277 }
2278
2279 inline void push(Method* method, int bci, TRAPS) {
2280 // Smear the -1 bci to 0 since the array only holds unsigned
2281 // shorts. The later line number lookup would just smear the -1
2282 // to a 0 even if it could be recorded.
2283 if (bci == SynchronizationEntryBCI) bci = 0;
2284
2285 if (_index >= trace_chunk_size) {
2286 methodHandle mhandle(THREAD, method);
2287 expand(CHECK);
2288 method = mhandle();
2289 }
2290
2291 _methods->ushort_at_put(_index, method->orig_method_idnum());
2292 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2293
2294 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2295 // klass owning the symbols alive so their refcounts aren't decremented.
2296 Symbol* name = method->name();
2297 _names->symbol_at_put(_index, name);
2298
2299 // We need to save the mirrors in the backtrace to keep the class
2300 // from being unloaded while we still have this stack trace.
2301 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2302 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2303
2304 _index++;
2305 }
2306
2307 void set_has_hidden_top_frame() {
2308 if (!_has_hidden_top_frame) {
2309 // It would be nice to add java/lang/Boolean::TRUE here
2310 // to indicate that this backtrace has a hidden top frame.
2311 // But this code is used before TRUE is allocated.
2312 // Therefore let's just use an arbitrary legal oop
2313 // available right here. _methods is a short[].
2314 assert(_methods != nullptr, "we need a legal oop");
2315 _has_hidden_top_frame = true;
2316 _head->obj_at_put(trace_hidden_offset, _methods);
2317 }
2318 }
2319 };
2320
2321 struct BacktraceElement : public StackObj {
2322 int _method_id;
2323 int _bci;
2324 int _version;
2325 Symbol* _name;
2326 Handle _mirror;
2327 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2328 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2329 };
2330
2331 class BacktraceIterator : public StackObj {
2332 int _index;
2333 objArrayHandle _result;
2334 objArrayHandle _mirrors;
2335 typeArrayHandle _methods;
2336 typeArrayHandle _bcis;
2337 typeArrayHandle _names;
2338
2339 void init(objArrayHandle result, Thread* thread) {
2340 // Get method id, bci, version and mirror from chunk
2341 _result = result;
2342 if (_result.not_null()) {
2343 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2344 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2345 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2346 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2347 _index = 0;
2348 }
2349 }
2350 public:
2351 BacktraceIterator(objArrayHandle result, Thread* thread) {
2352 init(result, thread);
2353 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2354 }
2355
2356 BacktraceElement next(Thread* thread) {
2357 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2358 _methods->ushort_at(_index),
2359 Backtrace::version_at(_bcis->int_at(_index)),
2360 Backtrace::bci_at(_bcis->int_at(_index)),
2361 _names->symbol_at(_index));
2362 _index++;
2363
2364 if (_index >= java_lang_Throwable::trace_chunk_size) {
2365 int next_offset = java_lang_Throwable::trace_next_offset;
2366 // Get next chunk
2367 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2368 init(result, thread);
2369 }
2370 return e;
2371 }
2372
2373 bool repeat() {
2374 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2375 }
2376 };
2377
2378
2379 // Print stack trace element to resource allocated buffer
2380 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2381 int version, int bci, Symbol* name) {
2382 ResourceMark rm;
2383
2384 // Get strings and string lengths
2385 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2386 const char* klass_name = holder->external_name();
2387 int buf_len = (int)strlen(klass_name);
2388
2389 char* method_name = name->as_C_string();
2390 buf_len += (int)strlen(method_name);
2391
2392 char* source_file_name = nullptr;
2393 Symbol* source = Backtrace::get_source_file_name(holder, version);
2394 if (source != nullptr) {
2395 source_file_name = source->as_C_string();
2396 buf_len += (int)strlen(source_file_name);
2397 }
2398
2399 char *module_name = nullptr, *module_version = nullptr;
2400 ModuleEntry* module = holder->module();
2401 if (module->is_named()) {
2402 module_name = module->name()->as_C_string();
2403 buf_len += (int)strlen(module_name);
2404 if (module->version() != nullptr) {
2405 module_version = module->version()->as_C_string();
2406 buf_len += (int)strlen(module_version);
2407 }
2408 }
2409
2410 // Allocate temporary buffer with extra space for formatting and line number
2411 const size_t buf_size = buf_len + 64;
2412 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2413
2414 // Print stack trace line in buffer
2415 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2416
2417 // Print module information
2418 if (module_name != nullptr) {
2419 if (module_version != nullptr) {
2420 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2421 } else {
2422 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2423 }
2424 }
2425
2426 // The method can be null if the requested class version is gone
2427 Method* method = holder->method_with_orig_idnum(method_id, version);
2428 if (!version_matches(method, version)) {
2429 strcat(buf, "Redefined)");
2430 } else {
2431 int line_number = Backtrace::get_line_number(method, bci);
2432 if (line_number == -2) {
2433 strcat(buf, "Native Method)");
2434 } else {
2435 if (source_file_name != nullptr && (line_number != -1)) {
2436 // Sourcename and linenumber
2437 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2438 } else if (source_file_name != nullptr) {
2439 // Just sourcename
2440 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2441 } else {
2442 // Neither sourcename nor linenumber
2443 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2444 }
2445 nmethod* nm = method->code();
2446 if (WizardMode && nm != nullptr) {
2447 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2448 }
2449 }
2450 }
2451
2452 st->print_cr("%s", buf);
2453 }
2454
2455 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2456 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2457 int method_id = method->orig_method_idnum();
2458 int version = method->constants()->version();
2459 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2460 }
2461
2462 /**
2463 * Print the throwable message and its stack trace plus all causes by walking the
2464 * cause chain. The output looks the same as of Throwable.printStackTrace().
2465 */
2466 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2467 // First, print the message.
2468 print(throwable(), st);
2469 st->cr();
2470
2471 // Now print the stack trace.
2472 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2473 while (throwable.not_null()) {
2474 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2475 if (result.is_null()) {
2476 st->print_raw_cr("\t<<no stack trace available>>");
2477 return;
2478 }
2479 BacktraceIterator iter(result, THREAD);
2480
2481 while (iter.repeat()) {
2482 BacktraceElement bte = iter.next(THREAD);
2483 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2484 }
2485 if (THREAD->can_call_java()) {
2486 // Call getCause() which doesn't necessarily return the _cause field.
2487 ExceptionMark em(THREAD);
2488 JavaValue cause(T_OBJECT);
2489 JavaCalls::call_virtual(&cause,
2490 throwable,
2491 throwable->klass(),
2492 vmSymbols::getCause_name(),
2493 vmSymbols::void_throwable_signature(),
2494 THREAD);
2495 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2496 if (HAS_PENDING_EXCEPTION) {
2497 CLEAR_PENDING_EXCEPTION;
2498 throwable = Handle();
2499 } else {
2500 throwable = Handle(THREAD, cause.get_oop());
2501 if (throwable.not_null()) {
2502 st->print("Caused by: ");
2503 print(throwable(), st);
2504 st->cr();
2505 }
2506 }
2507 } else {
2508 st->print_raw_cr("<<cannot call Java to get cause>>");
2509 return;
2510 }
2511 }
2512 }
2513
2514 /**
2515 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2516 */
2517 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2518 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2519 JavaValue result(T_VOID);
2520 JavaCalls::call_virtual(&result,
2521 throwable,
2522 vmClasses::Throwable_klass(),
2523 vmSymbols::printStackTrace_name(),
2524 vmSymbols::void_method_signature(),
2525 THREAD);
2526 }
2527
2528 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2529 if (!StackTraceInThrowable) return;
2530 ResourceMark rm(THREAD);
2531
2532 // Start out by clearing the backtrace for this object, in case the VM
2533 // runs out of memory while allocating the stack trace
2534 set_backtrace(throwable(), nullptr);
2535 // Clear lazily constructed Java level stacktrace if refilling occurs
2536 // This is unnecessary in 1.7+ but harmless
2537 clear_stacktrace(throwable());
2538
2539 int max_depth = MaxJavaStackTraceDepth;
2540 JavaThread* thread = THREAD;
2541
2542 BacktraceBuilder bt(CHECK);
2543
2544 // If there is no Java frame just return the method that was being called
2545 // with bci 0
2546 if (!thread->has_last_Java_frame()) {
2547 if (max_depth >= 1 && method() != nullptr) {
2548 bt.push(method(), 0, CHECK);
2549 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2550 set_depth(throwable(), 1);
2551 set_backtrace(throwable(), bt.backtrace());
2552 }
2553 return;
2554 }
2555
2556 // Instead of using vframe directly, this version of fill_in_stack_trace
2557 // basically handles everything by hand. This significantly improved the
2558 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2559 // See bug 6333838 for more details.
2560 // The "ASSERT" here is to verify this method generates the exactly same stack
2561 // trace as utilizing vframe.
2562 #ifdef ASSERT
2563 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2564 #endif
2565 int total_count = 0;
2566 RegisterMap map(thread,
2567 RegisterMap::UpdateMap::skip,
2568 RegisterMap::ProcessFrames::skip,
2569 RegisterMap::WalkContinuation::include);
2570 int decode_offset = 0;
2571 nmethod* nm = nullptr;
2572 bool skip_fillInStackTrace_check = false;
2573 bool skip_throwableInit_check = false;
2574 bool skip_hidden = !ShowHiddenFrames;
2575 bool show_carrier = ShowCarrierFrames;
2576 ContinuationEntry* cont_entry = thread->last_continuation();
2577 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2578 Method* method = nullptr;
2579 int bci = 0;
2580
2581 // Compiled java method case.
2582 if (decode_offset != 0) {
2583 DebugInfoReadStream stream(nm, decode_offset);
2584 decode_offset = stream.read_int();
2585 method = (Method*)nm->metadata_at(stream.read_int());
2586 bci = stream.read_bci();
2587 } else {
2588 if (fr.is_first_frame()) break;
2589
2590 if (Continuation::is_continuation_enterSpecial(fr)) {
2591 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2592 if (!show_carrier && cont_entry->is_virtual_thread()) {
2593 break;
2594 }
2595 cont_entry = cont_entry->parent();
2596 }
2597
2598 address pc = fr.pc();
2599 if (fr.is_interpreted_frame()) {
2600 address bcp;
2601 if (!map.in_cont()) {
2602 bcp = fr.interpreter_frame_bcp();
2603 method = fr.interpreter_frame_method();
2604 } else {
2605 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2606 method = map.stack_chunk()->interpreter_frame_method(fr);
2607 }
2608 bci = method->bci_from(bcp);
2609 fr = fr.sender(&map);
2610 } else {
2611 CodeBlob* cb = fr.cb();
2612 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2613 // but non nmethod
2614 fr = fr.sender(&map);
2615 if (cb == nullptr || !cb->is_nmethod()) {
2616 continue;
2617 }
2618 nm = cb->as_nmethod();
2619 assert(nm->method() != nullptr, "must be");
2620 if (nm->method()->is_native()) {
2621 method = nm->method();
2622 bci = 0;
2623 } else {
2624 PcDesc* pd = nm->pc_desc_at(pc);
2625 decode_offset = pd->scope_decode_offset();
2626 // if decode_offset is not equal to 0, it will execute the
2627 // "compiled java method case" at the beginning of the loop.
2628 continue;
2629 }
2630 }
2631 }
2632 #ifdef ASSERT
2633 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2634 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2635 st.next();
2636 }
2637 #endif
2638
2639 // the format of the stacktrace will be:
2640 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2641 // - 0 or more <init> methods for the exception class (skipped)
2642 // - rest of the stack
2643
2644 if (!skip_fillInStackTrace_check) {
2645 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2646 throwable->is_a(method->method_holder())) {
2647 continue;
2648 }
2649 else {
2650 skip_fillInStackTrace_check = true; // gone past them all
2651 }
2652 }
2653 if (!skip_throwableInit_check) {
2654 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2655
2656 // skip <init> methods of the exception class and superclasses
2657 // This is similar to classic VM.
2658 if (method->name() == vmSymbols::object_initializer_name() &&
2659 throwable->is_a(method->method_holder())) {
2660 continue;
2661 } else {
2662 // there are none or we've seen them all - either way stop checking
2663 skip_throwableInit_check = true;
2664 }
2665 }
2666 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2667 if (skip_hidden) {
2668 if (total_count == 0) {
2669 // The top frame will be hidden from the stack trace.
2670 bt.set_has_hidden_top_frame();
2671 }
2672 continue;
2673 }
2674 }
2675
2676 bt.push(method, bci, CHECK);
2677 total_count++;
2678 }
2679
2680 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2681
2682 // Put completed stack trace into throwable object
2683 set_backtrace(throwable(), bt.backtrace());
2684 set_depth(throwable(), total_count);
2685 }
2686
2687 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2688 // No-op if stack trace is disabled
2689 if (!StackTraceInThrowable) {
2690 return;
2691 }
2692
2693 // Disable stack traces for some preallocated out of memory errors
2694 if (!Universe::should_fill_in_stack_trace(throwable)) {
2695 return;
2696 }
2697
2698 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2699 PreserveExceptionMark pm(THREAD);
2700
2701 fill_in_stack_trace(throwable, method, THREAD);
2702 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2703 // original exception via the PreserveExceptionMark destructor.
2704 CLEAR_PENDING_EXCEPTION;
2705 }
2706
2707 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2708 // Allocate stack trace - backtrace is created but not filled in
2709
2710 // No-op if stack trace is disabled
2711 if (!StackTraceInThrowable) return;
2712 BacktraceBuilder bt(CHECK); // creates a backtrace
2713 set_backtrace(throwable(), bt.backtrace());
2714 }
2715
2716
2717 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2718 // Fill in stack trace into preallocated backtrace (no GC)
2719
2720 // No-op if stack trace is disabled
2721 if (!StackTraceInThrowable) return;
2722
2723 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2724
2725 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2726
2727 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2728 assert(backtrace.not_null(), "backtrace should have been preallocated");
2729
2730 ResourceMark rm(THREAD);
2731 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2732
2733 BacktraceBuilder bt(THREAD, backtrace);
2734
2735 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2736 // methods as preallocated errors aren't created by "java" code.
2737
2738 // fill in as much stack trace as possible
2739 int chunk_count = 0;
2740 for (;!st.at_end(); st.next()) {
2741 bt.push(st.method(), st.bci(), CHECK);
2742 chunk_count++;
2743
2744 // Bail-out for deep stacks
2745 if (chunk_count >= trace_chunk_size) break;
2746 }
2747 set_depth(throwable(), chunk_count);
2748 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2749
2750 // We support the Throwable immutability protocol defined for Java 7.
2751 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2752 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2753 }
2754
2755 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2756 objArrayHandle stack_trace_array_h, TRAPS) {
2757
2758 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2759 THROW(vmSymbols::java_lang_NullPointerException());
2760 }
2761
2762 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2763
2764 if (stack_trace_array_h->length() != depth) {
2765 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2766 }
2767
2768 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2769 BacktraceIterator iter(result, THREAD);
2770
2771 int index = 0;
2772 while (iter.repeat()) {
2773 BacktraceElement bte = iter.next(THREAD);
2774
2775 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2776
2777 if (stack_trace_element.is_null()) {
2778 THROW(vmSymbols::java_lang_NullPointerException());
2779 }
2780
2781 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2782 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2783
2784 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2785 method,
2786 bte._version,
2787 bte._bci,
2788 bte._name,
2789 CHECK);
2790 }
2791 }
2792
2793 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2794 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2795 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2796 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2797 // symbolic stacktrace of 'throwable'.
2798 assert(throwable.not_null(), "shouldn't be");
2799
2800 // Now create the message from the original exception and thread name.
2801 ResourceMark rm(current);
2802 const char *message = nullptr;
2803 oop detailed_message = java_lang_Throwable::message(throwable());
2804 if (detailed_message != nullptr) {
2805 message = java_lang_String::as_utf8_string(detailed_message);
2806 }
2807 stringStream st;
2808 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2809 message == nullptr ? "" : ":");
2810 if (message == nullptr) {
2811 st.print("[in thread \"%s\"]", current->name());
2812 } else {
2813 st.print("%s [in thread \"%s\"]", message, current->name());
2814 }
2815
2816 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2817 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2818 // If new_exception returns a different exception while creating the exception,
2819 // abandon the attempt to save the initialization error and return null.
2820 if (init_error->klass()->name() != exception_name) {
2821 log_info(class, init)("Exception %s thrown while saving initialization exception",
2822 init_error->klass()->external_name());
2823 return Handle();
2824 }
2825
2826 // Call to java to fill in the stack trace and clear declaringClassObject to
2827 // not keep classes alive in the stack trace.
2828 // call this: public StackTraceElement[] getStackTrace()
2829 JavaValue result(T_ARRAY);
2830 JavaCalls::call_virtual(&result, throwable,
2831 vmClasses::Throwable_klass(),
2832 vmSymbols::getStackTrace_name(),
2833 vmSymbols::getStackTrace_signature(),
2834 current);
2835 if (!current->has_pending_exception()){
2836 Handle stack_trace(current, result.get_oop());
2837 assert(stack_trace->is_objArray(), "Should be an array");
2838 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
2839 // Clear backtrace because the stacktrace should be used instead.
2840 set_backtrace(init_error(), nullptr);
2841 } else {
2842 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
2843 init_error->klass()->external_name());
2844 current->clear_pending_exception();
2845 }
2846
2847 return init_error;
2848 }
2849
2850 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2851 JavaThread* current = JavaThread::current();
2852 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2853 BacktraceIterator iter(result, current);
2854 // No backtrace available.
2855 if (!iter.repeat()) return false;
2856
2857 // If the exception happened in a frame that has been hidden, i.e.,
2858 // omitted from the back trace, we can not compute the message.
2859 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2860 if (hidden != nullptr) {
2861 return false;
2862 }
2863
2864 // Get first backtrace element.
2865 BacktraceElement bte = iter.next(current);
2866
2867 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2868 assert(holder != nullptr, "first element should be non-null");
2869 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2870
2871 // Original version is no longer available.
2872 if (m == nullptr || !version_matches(m, bte._version)) {
2873 return false;
2874 }
2875
2876 *method = m;
2877 *bci = bte._bci;
2878 return true;
2879 }
2880
2881 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2882 // Allocate java.lang.StackTraceElement instance
2883 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2884 assert(k != nullptr, "must be loaded in 1.4+");
2885 if (k->should_be_initialized()) {
2886 k->initialize(CHECK_NULL);
2887 }
2888
2889 Handle element = k->allocate_instance_handle(CHECK_NULL);
2890
2891 int version = method->constants()->version();
2892 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2893 return element();
2894 }
2895
2896 void java_lang_StackTraceElement::fill_in(Handle element,
2897 InstanceKlass* holder, const methodHandle& method,
2898 int version, int bci, Symbol* name, TRAPS) {
2899 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2900
2901 ResourceMark rm(THREAD);
2902 HandleMark hm(THREAD);
2903
2904 // Fill in class name
2905 Handle java_class(THREAD, holder->java_mirror());
2906 oop classname = java_lang_Class::name(java_class, CHECK);
2907 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2908 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2909
2910 oop loader = holder->class_loader();
2911 if (loader != nullptr) {
2912 oop loader_name = java_lang_ClassLoader::name(loader);
2913 if (loader_name != nullptr)
2914 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2915 }
2916
2917 // Fill in method name
2918 oop methodname = StringTable::intern(name, CHECK);
2919 java_lang_StackTraceElement::set_methodName(element(), methodname);
2920
2921 // Fill in module name and version
2922 ModuleEntry* module = holder->module();
2923 if (module->is_named()) {
2924 oop module_name = StringTable::intern(module->name(), CHECK);
2925 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2926 oop module_version;
2927 if (module->version() != nullptr) {
2928 module_version = StringTable::intern(module->version(), CHECK);
2929 } else {
2930 module_version = nullptr;
2931 }
2932 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2933 }
2934
2935 if (method() == nullptr || !version_matches(method(), version)) {
2936 // The method was redefined, accurate line number information isn't available
2937 java_lang_StackTraceElement::set_fileName(element(), nullptr);
2938 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2939 } else {
2940 Symbol* source;
2941 oop source_file;
2942 int line_number;
2943 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2944
2945 java_lang_StackTraceElement::set_fileName(element(), source_file);
2946 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2947 }
2948 }
2949
2950 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2951 InstanceKlass* holder,
2952 int version,
2953 const methodHandle& method,
2954 int bci,
2955 Symbol*& source,
2956 oop& source_file,
2957 int& line_number, TRAPS) {
2958 // Fill in source file name and line number.
2959 source = Backtrace::get_source_file_name(holder, version);
2960 source_file = java_lang_Class::source_file(java_class());
2961 if (source != nullptr) {
2962 // Class was not redefined. We can trust its cache if set,
2963 // else we have to initialize it.
2964 if (source_file == nullptr) {
2965 source_file = StringTable::intern(source, CHECK);
2966 java_lang_Class::set_source_file(java_class(), source_file);
2967 }
2968 } else {
2969 // Class was redefined. Dump the cache if it was set.
2970 if (source_file != nullptr) {
2971 source_file = nullptr;
2972 java_lang_Class::set_source_file(java_class(), source_file);
2973 }
2974 }
2975 line_number = Backtrace::get_line_number(method(), bci);
2976 }
2977
2978 #if INCLUDE_JVMCI
2979 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2980 Symbol*& filename, int& line_number, TRAPS) {
2981 ResourceMark rm(THREAD);
2982 HandleMark hm(THREAD);
2983
2984 filename = nullptr;
2985 line_number = -1;
2986
2987 oop source_file;
2988 int version = method->constants()->version();
2989 InstanceKlass* holder = method->method_holder();
2990 Handle java_class(THREAD, holder->java_mirror());
2991 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2992 }
2993 #endif // INCLUDE_JVMCI
2994
2995 // java_lang_ClassFrameInfo
2996
2997 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
2998 int java_lang_ClassFrameInfo::_flags_offset;
2999
3000 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3001 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3002 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3003
3004 void java_lang_ClassFrameInfo::compute_offsets() {
3005 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3006 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3007 }
3008
3009 #if INCLUDE_CDS
3010 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3011 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3012 }
3013 #endif
3014
3015 static int get_flags(const methodHandle& m) {
3016 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3017 if (m->is_initializer()) {
3018 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3019 } else {
3020 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3021 }
3022 if (m->caller_sensitive()) {
3023 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3024 }
3025 if (m->is_hidden()) {
3026 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3027 }
3028 assert((flags & 0xFF000000) == 0, "unexpected flags");
3029 return flags;
3030 }
3031
3032 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3033 return obj->obj_field(_classOrMemberName_offset);
3034 }
3035
3036 int java_lang_ClassFrameInfo::flags(oop obj) {
3037 return obj->int_field(_flags_offset);
3038 }
3039
3040 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3041 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3042 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3043 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3044 stackFrame->int_field_put(_flags_offset, flags);
3045 }
3046
3047 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3048 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3049 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3050 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3051 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3052 stackFrame->int_field_put(_flags_offset, flags);
3053 }
3054
3055
3056 // java_lang_StackFrameInfo
3057
3058 int java_lang_StackFrameInfo::_type_offset;
3059 int java_lang_StackFrameInfo::_name_offset;
3060 int java_lang_StackFrameInfo::_bci_offset;
3061 int java_lang_StackFrameInfo::_version_offset;
3062 int java_lang_StackFrameInfo::_contScope_offset;
3063
3064 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3065 macro(_type_offset, k, "type", object_signature, false); \
3066 macro(_name_offset, k, "name", string_signature, false); \
3067 macro(_bci_offset, k, "bci", int_signature, false); \
3068 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3069
3070 void java_lang_StackFrameInfo::compute_offsets() {
3071 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3072 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3073 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3074 }
3075
3076 #if INCLUDE_CDS
3077 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3078 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3079 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3080 }
3081 #endif
3082
3083 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3084 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3085 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3086 return method;
3087 }
3088
3089 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3090 // set Method* or mid/cpref
3091 HandleMark hm(THREAD);
3092 Handle cont_h(THREAD, cont);
3093 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3094
3095 // set bci
3096 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3097 // method may be redefined; store the version
3098 int version = method->constants()->version();
3099 assert((jushort)version == version, "version should be short");
3100 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3101
3102 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3103 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3104 }
3105
3106 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3107 ResourceMark rm(THREAD);
3108 HandleMark hm(THREAD);
3109
3110 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3111 InstanceKlass* holder = method->method_holder();
3112 short version = stackFrame->short_field(_version_offset);
3113 int bci = stackFrame->int_field(_bci_offset);
3114 Symbol* name = method->name();
3115 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3116 }
3117
3118 oop java_lang_StackFrameInfo::type(oop obj) {
3119 return obj->obj_field(_type_offset);
3120 }
3121
3122 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3123 obj->obj_field_put(_type_offset, value);
3124 }
3125
3126 oop java_lang_StackFrameInfo::name(oop obj) {
3127 return obj->obj_field(_name_offset);
3128 }
3129
3130 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3131 obj->obj_field_put(_name_offset, value);
3132 }
3133
3134 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3135 obj->short_field_put(_version_offset, value);
3136 }
3137
3138 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3139 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3140 obj->int_field_put(_bci_offset, value);
3141 }
3142
3143 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3144 obj->obj_field_put(_contScope_offset, value);
3145 }
3146
3147 int java_lang_LiveStackFrameInfo::_monitors_offset;
3148 int java_lang_LiveStackFrameInfo::_locals_offset;
3149 int java_lang_LiveStackFrameInfo::_operands_offset;
3150 int java_lang_LiveStackFrameInfo::_mode_offset;
3151
3152 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3153 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3154 macro(_locals_offset, k, "locals", object_array_signature, false); \
3155 macro(_operands_offset, k, "operands", object_array_signature, false); \
3156 macro(_mode_offset, k, "mode", int_signature, false)
3157
3158 void java_lang_LiveStackFrameInfo::compute_offsets() {
3159 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3160 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3161 }
3162
3163 #if INCLUDE_CDS
3164 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3165 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3166 }
3167 #endif
3168
3169 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3170 obj->obj_field_put(_monitors_offset, value);
3171 }
3172
3173 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3174 obj->obj_field_put(_locals_offset, value);
3175 }
3176
3177 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3178 obj->obj_field_put(_operands_offset, value);
3179 }
3180
3181 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3182 obj->int_field_put(_mode_offset, value);
3183 }
3184
3185
3186 // java_lang_AccessibleObject
3187
3188 int java_lang_reflect_AccessibleObject::_override_offset;
3189
3190 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3191 macro(_override_offset, k, "override", bool_signature, false)
3192
3193 void java_lang_reflect_AccessibleObject::compute_offsets() {
3194 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3195 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3196 }
3197
3198 #if INCLUDE_CDS
3199 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3200 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3201 }
3202 #endif
3203
3204 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3205 return (jboolean) reflect->bool_field(_override_offset);
3206 }
3207
3208 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3209 reflect->bool_field_put(_override_offset, (int) value);
3210 }
3211
3212 // java_lang_reflect_Method
3213
3214 int java_lang_reflect_Method::_clazz_offset;
3215 int java_lang_reflect_Method::_name_offset;
3216 int java_lang_reflect_Method::_returnType_offset;
3217 int java_lang_reflect_Method::_parameterTypes_offset;
3218 int java_lang_reflect_Method::_exceptionTypes_offset;
3219 int java_lang_reflect_Method::_slot_offset;
3220 int java_lang_reflect_Method::_modifiers_offset;
3221 int java_lang_reflect_Method::_signature_offset;
3222 int java_lang_reflect_Method::_annotations_offset;
3223 int java_lang_reflect_Method::_parameter_annotations_offset;
3224 int java_lang_reflect_Method::_annotation_default_offset;
3225
3226 #define METHOD_FIELDS_DO(macro) \
3227 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3228 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3229 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3230 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3231 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3232 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3233 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3234 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3235 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3236 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3237 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3238
3239 void java_lang_reflect_Method::compute_offsets() {
3240 InstanceKlass* k = vmClasses::reflect_Method_klass();
3241 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3242 }
3243
3244 #if INCLUDE_CDS
3245 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3246 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3247 }
3248 #endif
3249
3250 Handle java_lang_reflect_Method::create(TRAPS) {
3251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3252 Klass* klass = vmClasses::reflect_Method_klass();
3253 // This class is eagerly initialized during VM initialization, since we keep a reference
3254 // to one of the methods
3255 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3256 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3257 }
3258
3259 oop java_lang_reflect_Method::clazz(oop reflect) {
3260 return reflect->obj_field(_clazz_offset);
3261 }
3262
3263 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3264 reflect->obj_field_put(_clazz_offset, value);
3265 }
3266
3267 int java_lang_reflect_Method::slot(oop reflect) {
3268 return reflect->int_field(_slot_offset);
3269 }
3270
3271 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3272 reflect->int_field_put(_slot_offset, value);
3273 }
3274
3275 void java_lang_reflect_Method::set_name(oop method, oop value) {
3276 method->obj_field_put(_name_offset, value);
3277 }
3278
3279 oop java_lang_reflect_Method::return_type(oop method) {
3280 return method->obj_field(_returnType_offset);
3281 }
3282
3283 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3284 method->obj_field_put(_returnType_offset, value);
3285 }
3286
3287 oop java_lang_reflect_Method::parameter_types(oop method) {
3288 return method->obj_field(_parameterTypes_offset);
3289 }
3290
3291 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3292 method->obj_field_put(_parameterTypes_offset, value);
3293 }
3294
3295 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3296 method->obj_field_put(_exceptionTypes_offset, value);
3297 }
3298
3299 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3300 method->int_field_put(_modifiers_offset, value);
3301 }
3302
3303 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3304 method->obj_field_put(_signature_offset, value);
3305 }
3306
3307 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3308 method->obj_field_put(_annotations_offset, value);
3309 }
3310
3311 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3312 method->obj_field_put(_parameter_annotations_offset, value);
3313 }
3314
3315 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3316 method->obj_field_put(_annotation_default_offset, value);
3317 }
3318
3319 int java_lang_reflect_Constructor::_clazz_offset;
3320 int java_lang_reflect_Constructor::_parameterTypes_offset;
3321 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3322 int java_lang_reflect_Constructor::_slot_offset;
3323 int java_lang_reflect_Constructor::_modifiers_offset;
3324 int java_lang_reflect_Constructor::_signature_offset;
3325 int java_lang_reflect_Constructor::_annotations_offset;
3326 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3327
3328 #define CONSTRUCTOR_FIELDS_DO(macro) \
3329 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3330 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3331 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3332 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3333 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3334 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3335 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3336 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3337
3338 void java_lang_reflect_Constructor::compute_offsets() {
3339 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3340 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3341 }
3342
3343 #if INCLUDE_CDS
3344 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3345 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3346 }
3347 #endif
3348
3349 Handle java_lang_reflect_Constructor::create(TRAPS) {
3350 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3351 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3352 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3353 InstanceKlass* ik = InstanceKlass::cast(k);
3354 // Ensure it is initialized
3355 ik->initialize(CHECK_NH);
3356 return ik->allocate_instance_handle(THREAD);
3357 }
3358
3359 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3360 return reflect->obj_field(_clazz_offset);
3361 }
3362
3363 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3364 reflect->obj_field_put(_clazz_offset, value);
3365 }
3366
3367 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3368 return constructor->obj_field(_parameterTypes_offset);
3369 }
3370
3371 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3372 constructor->obj_field_put(_parameterTypes_offset, value);
3373 }
3374
3375 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3376 constructor->obj_field_put(_exceptionTypes_offset, value);
3377 }
3378
3379 int java_lang_reflect_Constructor::slot(oop reflect) {
3380 return reflect->int_field(_slot_offset);
3381 }
3382
3383 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3384 reflect->int_field_put(_slot_offset, value);
3385 }
3386
3387 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3388 constructor->int_field_put(_modifiers_offset, value);
3389 }
3390
3391 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3392 constructor->obj_field_put(_signature_offset, value);
3393 }
3394
3395 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3396 constructor->obj_field_put(_annotations_offset, value);
3397 }
3398
3399 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3400 method->obj_field_put(_parameter_annotations_offset, value);
3401 }
3402
3403 int java_lang_reflect_Field::_clazz_offset;
3404 int java_lang_reflect_Field::_name_offset;
3405 int java_lang_reflect_Field::_type_offset;
3406 int java_lang_reflect_Field::_slot_offset;
3407 int java_lang_reflect_Field::_modifiers_offset;
3408 int java_lang_reflect_Field::_trusted_final_offset;
3409 int java_lang_reflect_Field::_signature_offset;
3410 int java_lang_reflect_Field::_annotations_offset;
3411
3412 #define FIELD_FIELDS_DO(macro) \
3413 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3414 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3415 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3416 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3417 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3418 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3419 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3420 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3421
3422 void java_lang_reflect_Field::compute_offsets() {
3423 InstanceKlass* k = vmClasses::reflect_Field_klass();
3424 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3425 }
3426
3427 #if INCLUDE_CDS
3428 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3429 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3430 }
3431 #endif
3432
3433 Handle java_lang_reflect_Field::create(TRAPS) {
3434 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3435 Symbol* name = vmSymbols::java_lang_reflect_Field();
3436 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3437 InstanceKlass* ik = InstanceKlass::cast(k);
3438 // Ensure it is initialized
3439 ik->initialize(CHECK_NH);
3440 return ik->allocate_instance_handle(THREAD);
3441 }
3442
3443 oop java_lang_reflect_Field::clazz(oop reflect) {
3444 return reflect->obj_field(_clazz_offset);
3445 }
3446
3447 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3448 reflect->obj_field_put(_clazz_offset, value);
3449 }
3450
3451 oop java_lang_reflect_Field::name(oop field) {
3452 return field->obj_field(_name_offset);
3453 }
3454
3455 void java_lang_reflect_Field::set_name(oop field, oop value) {
3456 field->obj_field_put(_name_offset, value);
3457 }
3458
3459 oop java_lang_reflect_Field::type(oop field) {
3460 return field->obj_field(_type_offset);
3461 }
3462
3463 void java_lang_reflect_Field::set_type(oop field, oop value) {
3464 field->obj_field_put(_type_offset, value);
3465 }
3466
3467 int java_lang_reflect_Field::slot(oop reflect) {
3468 return reflect->int_field(_slot_offset);
3469 }
3470
3471 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3472 reflect->int_field_put(_slot_offset, value);
3473 }
3474
3475 int java_lang_reflect_Field::modifiers(oop field) {
3476 return field->int_field(_modifiers_offset);
3477 }
3478
3479 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3480 field->int_field_put(_modifiers_offset, value);
3481 }
3482
3483 void java_lang_reflect_Field::set_trusted_final(oop field) {
3484 field->bool_field_put(_trusted_final_offset, true);
3485 }
3486
3487 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3488 field->obj_field_put(_signature_offset, value);
3489 }
3490
3491 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3492 field->obj_field_put(_annotations_offset, value);
3493 }
3494
3495 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3496 // Allocate java.lang.reflect.RecordComponent instance
3497 HandleMark hm(THREAD);
3498 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3499 assert(ik != nullptr, "must be loaded");
3500 ik->initialize(CHECK_NULL);
3501
3502 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3503
3504 Handle decl_class(THREAD, holder->java_mirror());
3505 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3506
3507 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3508 oop component_name = StringTable::intern(name, CHECK_NULL);
3509 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3510
3511 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3512 Handle component_type_h =
3513 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3514 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3515
3516 Method* accessor_method = nullptr;
3517 {
3518 // Prepend "()" to type to create the full method signature.
3519 ResourceMark rm(THREAD);
3520 int sig_len = type->utf8_length() + 3; // "()" and null char
3521 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3522 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3523 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3524 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3525 }
3526
3527 if (accessor_method != nullptr) {
3528 methodHandle method(THREAD, accessor_method);
3529 oop m = Reflection::new_method(method, false, CHECK_NULL);
3530 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3531 } else {
3532 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3533 }
3534
3535 int sig_index = component->generic_signature_index();
3536 if (sig_index > 0) {
3537 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3538 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3539 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3540 } else {
3541 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3542 }
3543
3544 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3545 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3546
3547 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3548 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3549
3550 return element();
3551 }
3552
3553 int reflect_ConstantPool::_oop_offset;
3554
3555 #define CONSTANTPOOL_FIELDS_DO(macro) \
3556 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3557
3558 void reflect_ConstantPool::compute_offsets() {
3559 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3560 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3561 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3562 }
3563
3564 #if INCLUDE_CDS
3565 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3566 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3567 }
3568 #endif
3569
3570 int java_lang_reflect_Parameter::_name_offset;
3571 int java_lang_reflect_Parameter::_modifiers_offset;
3572 int java_lang_reflect_Parameter::_index_offset;
3573 int java_lang_reflect_Parameter::_executable_offset;
3574
3575 #define PARAMETER_FIELDS_DO(macro) \
3576 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3577 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3578 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3579 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3580
3581 void java_lang_reflect_Parameter::compute_offsets() {
3582 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3583 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3584 }
3585
3586 #if INCLUDE_CDS
3587 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3588 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3589 }
3590 #endif
3591
3592 Handle java_lang_reflect_Parameter::create(TRAPS) {
3593 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3594 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3595 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3596 InstanceKlass* ik = InstanceKlass::cast(k);
3597 // Ensure it is initialized
3598 ik->initialize(CHECK_NH);
3599 return ik->allocate_instance_handle(THREAD);
3600 }
3601
3602 oop java_lang_reflect_Parameter::name(oop param) {
3603 return param->obj_field(_name_offset);
3604 }
3605
3606 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3607 param->obj_field_put(_name_offset, value);
3608 }
3609
3610 int java_lang_reflect_Parameter::modifiers(oop param) {
3611 return param->int_field(_modifiers_offset);
3612 }
3613
3614 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3615 param->int_field_put(_modifiers_offset, value);
3616 }
3617
3618 int java_lang_reflect_Parameter::index(oop param) {
3619 return param->int_field(_index_offset);
3620 }
3621
3622 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3623 param->int_field_put(_index_offset, value);
3624 }
3625
3626 oop java_lang_reflect_Parameter::executable(oop param) {
3627 return param->obj_field(_executable_offset);
3628 }
3629
3630 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3631 param->obj_field_put(_executable_offset, value);
3632 }
3633
3634 // java_lang_Module
3635
3636 int java_lang_Module::_loader_offset;
3637 int java_lang_Module::_name_offset;
3638 int java_lang_Module::_module_entry_offset;
3639
3640 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3641 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3642 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3643 vmSymbols::java_lang_module_init_signature(),
3644 loader, module_name, CHECK_NH);
3645 }
3646
3647 #define MODULE_FIELDS_DO(macro) \
3648 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3649 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3650
3651 void java_lang_Module::compute_offsets() {
3652 InstanceKlass* k = vmClasses::Module_klass();
3653 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3654 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3655 }
3656
3657 #if INCLUDE_CDS
3658 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3659 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3660 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3661 }
3662 #endif
3663
3664 oop java_lang_Module::loader(oop module) {
3665 return module->obj_field(_loader_offset);
3666 }
3667
3668 void java_lang_Module::set_loader(oop module, oop value) {
3669 module->obj_field_put(_loader_offset, value);
3670 }
3671
3672 oop java_lang_Module::name(oop module) {
3673 return module->obj_field(_name_offset);
3674 }
3675
3676 void java_lang_Module::set_name(oop module, oop value) {
3677 module->obj_field_put(_name_offset, value);
3678 }
3679
3680 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3681 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3682 assert(module != nullptr, "module can't be null");
3683 assert(oopDesc::is_oop(module), "module must be oop");
3684
3685 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3686 return module_entry;
3687 }
3688
3689 ModuleEntry* java_lang_Module::module_entry(oop module) {
3690 ModuleEntry* module_entry = module_entry_raw(module);
3691 if (module_entry == nullptr) {
3692 // If the inject field containing the ModuleEntry* is null then return the
3693 // class loader's unnamed module.
3694 oop loader = java_lang_Module::loader(module);
3695 Handle h_loader = Handle(Thread::current(), loader);
3696 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3697 return loader_cld->unnamed_module();
3698 }
3699 return module_entry;
3700 }
3701
3702 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3703 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3704 assert(module != nullptr, "module can't be null");
3705 assert(oopDesc::is_oop(module), "module must be oop");
3706 module->address_field_put(_module_entry_offset, (address)module_entry);
3707 }
3708
3709 Handle reflect_ConstantPool::create(TRAPS) {
3710 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3711 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3712 // Ensure it is initialized
3713 k->initialize(CHECK_NH);
3714 return k->allocate_instance_handle(THREAD);
3715 }
3716
3717
3718 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3719 oop mirror = value->pool_holder()->java_mirror();
3720 // Save the mirror to get back the constant pool.
3721 reflect->obj_field_put(_oop_offset, mirror);
3722 }
3723
3724 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3725
3726 oop mirror = reflect->obj_field(_oop_offset);
3727 Klass* k = java_lang_Class::as_Klass(mirror);
3728 assert(k->is_instance_klass(), "Must be");
3729
3730 // Get the constant pool back from the klass. Since class redefinition
3731 // merges the new constant pool into the old, this is essentially the
3732 // same constant pool as the original. If constant pool merging is
3733 // no longer done in the future, this will have to change to save
3734 // the original.
3735 return InstanceKlass::cast(k)->constants();
3736 }
3737
3738
3739 // Support for java_lang_ref_Reference
3740
3741 bool java_lang_ref_Reference::_offsets_initialized;
3742
3743 int java_lang_ref_Reference::_referent_offset;
3744 int java_lang_ref_Reference::_queue_offset;
3745 int java_lang_ref_Reference::_next_offset;
3746 int java_lang_ref_Reference::_discovered_offset;
3747
3748 #define REFERENCE_FIELDS_DO(macro) \
3749 macro(_referent_offset, k, "referent", object_signature, false); \
3750 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3751 macro(_next_offset, k, "next", reference_signature, false); \
3752 macro(_discovered_offset, k, "discovered", reference_signature, false);
3753
3754 void java_lang_ref_Reference::compute_offsets() {
3755 if (_offsets_initialized) {
3756 return;
3757 }
3758 _offsets_initialized = true;
3759 InstanceKlass* k = vmClasses::Reference_klass();
3760 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3761 }
3762
3763 #if INCLUDE_CDS
3764 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3765 f->do_bool(&_offsets_initialized);
3766 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3767 }
3768 #endif
3769
3770 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3771 assert(obj != nullptr, "sanity");
3772 if (offset != _referent_offset) {
3773 return false;
3774 }
3775
3776 Klass* k = obj->klass();
3777 if (!k->is_instance_klass()) {
3778 return false;
3779 }
3780
3781 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3782 bool is_reference = ik->reference_type() != REF_NONE;
3783 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3784 return is_reference;
3785 }
3786
3787 int java_lang_boxing_object::_value_offset;
3788 int java_lang_boxing_object::_long_value_offset;
3789
3790 #define BOXING_FIELDS_DO(macro) \
3791 macro(_value_offset, integerKlass, "value", int_signature, false); \
3792 macro(_long_value_offset, longKlass, "value", long_signature, false);
3793
3794 void java_lang_boxing_object::compute_offsets() {
3795 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3796 InstanceKlass* longKlass = vmClasses::Long_klass();
3797 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3798 }
3799
3800 #if INCLUDE_CDS
3801 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3802 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3803 }
3804 #endif
3805
3806 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3807 Klass* k = vmClasses::box_klass(type);
3808 if (k == nullptr) return nullptr;
3809 InstanceKlass* ik = InstanceKlass::cast(k);
3810 if (!ik->is_initialized()) {
3811 ik->initialize(CHECK_NULL);
3812 }
3813 return ik->allocate_instance(THREAD);
3814 }
3815
3816
3817 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3818 oop box = initialize_and_allocate(type, CHECK_NULL);
3819 if (box == nullptr) return nullptr;
3820 switch (type) {
3821 case T_BOOLEAN:
3822 box->bool_field_put(_value_offset, value->z);
3823 break;
3824 case T_CHAR:
3825 box->char_field_put(_value_offset, value->c);
3826 break;
3827 case T_FLOAT:
3828 box->float_field_put(_value_offset, value->f);
3829 break;
3830 case T_DOUBLE:
3831 box->double_field_put(_long_value_offset, value->d);
3832 break;
3833 case T_BYTE:
3834 box->byte_field_put(_value_offset, value->b);
3835 break;
3836 case T_SHORT:
3837 box->short_field_put(_value_offset, value->s);
3838 break;
3839 case T_INT:
3840 box->int_field_put(_value_offset, value->i);
3841 break;
3842 case T_LONG:
3843 box->long_field_put(_long_value_offset, value->j);
3844 break;
3845 default:
3846 return nullptr;
3847 }
3848 return box;
3849 }
3850
3851
3852 BasicType java_lang_boxing_object::basic_type(oop box) {
3853 if (box == nullptr) return T_ILLEGAL;
3854 BasicType type = vmClasses::box_klass_type(box->klass());
3855 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3856 return T_ILLEGAL;
3857 return type;
3858 }
3859
3860
3861 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3862 BasicType type = vmClasses::box_klass_type(box->klass());
3863 switch (type) {
3864 case T_BOOLEAN:
3865 value->z = box->bool_field(_value_offset);
3866 break;
3867 case T_CHAR:
3868 value->c = box->char_field(_value_offset);
3869 break;
3870 case T_FLOAT:
3871 value->f = box->float_field(_value_offset);
3872 break;
3873 case T_DOUBLE:
3874 value->d = box->double_field(_long_value_offset);
3875 break;
3876 case T_BYTE:
3877 value->b = box->byte_field(_value_offset);
3878 break;
3879 case T_SHORT:
3880 value->s = box->short_field(_value_offset);
3881 break;
3882 case T_INT:
3883 value->i = box->int_field(_value_offset);
3884 break;
3885 case T_LONG:
3886 value->j = box->long_field(_long_value_offset);
3887 break;
3888 default:
3889 return T_ILLEGAL;
3890 } // end switch
3891 return type;
3892 }
3893
3894
3895 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3896 BasicType type = vmClasses::box_klass_type(box->klass());
3897 switch (type) {
3898 case T_BOOLEAN:
3899 box->bool_field_put(_value_offset, value->z);
3900 break;
3901 case T_CHAR:
3902 box->char_field_put(_value_offset, value->c);
3903 break;
3904 case T_FLOAT:
3905 box->float_field_put(_value_offset, value->f);
3906 break;
3907 case T_DOUBLE:
3908 box->double_field_put(_long_value_offset, value->d);
3909 break;
3910 case T_BYTE:
3911 box->byte_field_put(_value_offset, value->b);
3912 break;
3913 case T_SHORT:
3914 box->short_field_put(_value_offset, value->s);
3915 break;
3916 case T_INT:
3917 box->int_field_put(_value_offset, value->i);
3918 break;
3919 case T_LONG:
3920 box->long_field_put(_long_value_offset, value->j);
3921 break;
3922 default:
3923 return T_ILLEGAL;
3924 } // end switch
3925 return type;
3926 }
3927
3928
3929 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3930 switch (type) {
3931 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3932 case T_CHAR: st->print("%d", value->c); break;
3933 case T_BYTE: st->print("%d", value->b); break;
3934 case T_SHORT: st->print("%d", value->s); break;
3935 case T_INT: st->print("%d", value->i); break;
3936 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3937 case T_FLOAT: st->print("%f", value->f); break;
3938 case T_DOUBLE: st->print("%lf", value->d); break;
3939 default: st->print("type %d?", type); break;
3940 }
3941 }
3942
3943
3944 // Support for java_lang_ref_SoftReference
3945 //
3946
3947 int java_lang_ref_SoftReference::_timestamp_offset;
3948 int java_lang_ref_SoftReference::_static_clock_offset;
3949
3950 #define SOFTREFERENCE_FIELDS_DO(macro) \
3951 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3952 macro(_static_clock_offset, k, "clock", long_signature, true)
3953
3954 void java_lang_ref_SoftReference::compute_offsets() {
3955 InstanceKlass* k = vmClasses::SoftReference_klass();
3956 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3957 }
3958
3959 #if INCLUDE_CDS
3960 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3961 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3962 }
3963 #endif
3964
3965 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3966 return ref->long_field(_timestamp_offset);
3967 }
3968
3969 jlong java_lang_ref_SoftReference::clock() {
3970 InstanceKlass* ik = vmClasses::SoftReference_klass();
3971 oop base = ik->static_field_base_raw();
3972 return base->long_field(_static_clock_offset);
3973 }
3974
3975 void java_lang_ref_SoftReference::set_clock(jlong value) {
3976 InstanceKlass* ik = vmClasses::SoftReference_klass();
3977 oop base = ik->static_field_base_raw();
3978 base->long_field_put(_static_clock_offset, value);
3979 }
3980
3981 // Support for java_lang_invoke_DirectMethodHandle
3982
3983 int java_lang_invoke_DirectMethodHandle::_member_offset;
3984
3985 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3986 oop member_name = nullptr;
3987 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3988 "a DirectMethodHandle oop is expected");
3989 return dmh->obj_field(_member_offset);
3990 }
3991
3992 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3993 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3994
3995 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3996 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3997 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3998 }
3999
4000 #if INCLUDE_CDS
4001 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4002 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4003 }
4004 #endif
4005
4006 // Support for java_lang_invoke_MethodHandle
4007
4008 int java_lang_invoke_MethodHandle::_type_offset;
4009 int java_lang_invoke_MethodHandle::_form_offset;
4010
4011 int java_lang_invoke_MemberName::_clazz_offset;
4012 int java_lang_invoke_MemberName::_name_offset;
4013 int java_lang_invoke_MemberName::_type_offset;
4014 int java_lang_invoke_MemberName::_flags_offset;
4015 int java_lang_invoke_MemberName::_method_offset;
4016 int java_lang_invoke_MemberName::_vmindex_offset;
4017
4018 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4019 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4020
4021 int java_lang_invoke_LambdaForm::_vmentry_offset;
4022
4023 #define METHODHANDLE_FIELDS_DO(macro) \
4024 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4025 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4026
4027 void java_lang_invoke_MethodHandle::compute_offsets() {
4028 InstanceKlass* k = vmClasses::MethodHandle_klass();
4029 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4030 }
4031
4032 #if INCLUDE_CDS
4033 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4034 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4035 }
4036 #endif
4037
4038 #define MEMBERNAME_FIELDS_DO(macro) \
4039 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4040 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4041 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4042 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4043 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4044
4045 void java_lang_invoke_MemberName::compute_offsets() {
4046 InstanceKlass* k = vmClasses::MemberName_klass();
4047 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4048 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4049 }
4050
4051 #if INCLUDE_CDS
4052 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4053 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4054 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4055 }
4056 #endif
4057
4058 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4059 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4060
4061 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4062 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4063 assert(k != nullptr, "jdk mismatch");
4064 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4065 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4066 }
4067
4068 #if INCLUDE_CDS
4069 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4070 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4071 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4072 }
4073 #endif
4074
4075 #define LAMBDAFORM_FIELDS_DO(macro) \
4076 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4077
4078 void java_lang_invoke_LambdaForm::compute_offsets() {
4079 InstanceKlass* k = vmClasses::LambdaForm_klass();
4080 assert (k != nullptr, "jdk mismatch");
4081 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4082 }
4083
4084 #if INCLUDE_CDS
4085 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4086 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4087 }
4088 #endif
4089
4090 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4091 return obj != nullptr && is_subclass(obj->klass());
4092 }
4093
4094 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4095 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4096
4097 #define NEP_FIELDS_DO(macro) \
4098 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4099 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4100
4101 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4102 return obj != nullptr && is_subclass(obj->klass());
4103 }
4104
4105 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4106 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4107 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4108 }
4109
4110 #if INCLUDE_CDS
4111 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4112 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4113 }
4114 #endif
4115
4116 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4117 return entry->obj_field(_method_type_offset);
4118 }
4119
4120 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4121 return entry->long_field(_downcall_stub_address_offset);
4122 }
4123
4124 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4125 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4126 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4127 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4128 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4129 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4130 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4131
4132 #define ABIDescriptor_FIELDS_DO(macro) \
4133 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4134 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4135 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4136 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4137 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4138 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4139 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4140
4141 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4142 return obj != nullptr && is_subclass(obj->klass());
4143 }
4144
4145 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4146 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4147 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4148 }
4149
4150 #if INCLUDE_CDS
4151 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4152 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4153 }
4154 #endif
4155
4156 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4157 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4158 }
4159
4160 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4161 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4162 }
4163
4164 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4165 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4166 }
4167
4168 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4169 return entry->int_field(_stackAlignment_offset);
4170 }
4171
4172 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4173 return entry->int_field(_shadowSpace_offset);
4174 }
4175
4176 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4177 return entry->obj_field(_scratch1_offset);
4178 }
4179
4180 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4181 return entry->obj_field(_scratch2_offset);
4182 }
4183
4184 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4185 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4186 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4187 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4188
4189 #define VMStorage_FIELDS_DO(macro) \
4190 macro(_type_offset, k, "type", byte_signature, false); \
4191 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4192 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4193 macro(_debugName_offset, k, "debugName", string_signature, false); \
4194
4195 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4196 return obj != nullptr && is_subclass(obj->klass());
4197 }
4198
4199 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4200 InstanceKlass* k = vmClasses::VMStorage_klass();
4201 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4202 }
4203
4204 #if INCLUDE_CDS
4205 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4206 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4207 }
4208 #endif
4209
4210 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4211 return entry->byte_field(_type_offset);
4212 }
4213
4214 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4215 return entry->int_field(_indexOrOffset_offset);
4216 }
4217
4218 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4219 return entry->short_field(_segmentMaskOrSize_offset);
4220 }
4221
4222 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4223 return entry->obj_field(_debugName_offset);
4224 }
4225
4226 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4227 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4228
4229 #define CallConv_FIELDS_DO(macro) \
4230 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4231 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4232
4233 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4234 return obj != nullptr && is_subclass(obj->klass());
4235 }
4236
4237 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4238 InstanceKlass* k = vmClasses::CallConv_klass();
4239 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4240 }
4241
4242 #if INCLUDE_CDS
4243 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4244 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4245 }
4246 #endif
4247
4248 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4249 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4250 }
4251
4252 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4253 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4254 }
4255
4256 oop java_lang_invoke_MethodHandle::type(oop mh) {
4257 return mh->obj_field(_type_offset);
4258 }
4259
4260 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4261 mh->obj_field_put(_type_offset, mtype);
4262 }
4263
4264 oop java_lang_invoke_MethodHandle::form(oop mh) {
4265 assert(_form_offset != 0, "");
4266 return mh->obj_field(_form_offset);
4267 }
4268
4269 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4270 assert(_form_offset != 0, "");
4271 mh->obj_field_put(_form_offset, lform);
4272 }
4273
4274 /// MemberName accessors
4275
4276 oop java_lang_invoke_MemberName::clazz(oop mname) {
4277 assert(is_instance(mname), "wrong type");
4278 return mname->obj_field(_clazz_offset);
4279 }
4280
4281 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4282 assert(is_instance(mname), "wrong type");
4283 mname->obj_field_put(_clazz_offset, clazz);
4284 }
4285
4286 oop java_lang_invoke_MemberName::name(oop mname) {
4287 assert(is_instance(mname), "wrong type");
4288 return mname->obj_field(_name_offset);
4289 }
4290
4291 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4292 assert(is_instance(mname), "wrong type");
4293 mname->obj_field_put(_name_offset, name);
4294 }
4295
4296 oop java_lang_invoke_MemberName::type(oop mname) {
4297 assert(is_instance(mname), "wrong type");
4298 return mname->obj_field(_type_offset);
4299 }
4300
4301 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4302 assert(is_instance(mname), "wrong type");
4303 mname->obj_field_put(_type_offset, type);
4304 }
4305
4306 int java_lang_invoke_MemberName::flags(oop mname) {
4307 assert(is_instance(mname), "wrong type");
4308 return mname->int_field(_flags_offset);
4309 }
4310
4311 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4312 assert(is_instance(mname), "wrong type");
4313 mname->int_field_put(_flags_offset, flags);
4314 }
4315
4316
4317 // Return vmtarget from ResolvedMethodName method field through indirection
4318 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4319 assert(is_instance(mname), "wrong type");
4320 oop method = mname->obj_field(_method_offset);
4321 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4322 }
4323
4324 bool java_lang_invoke_MemberName::is_method(oop mname) {
4325 assert(is_instance(mname), "must be MemberName");
4326 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4327 }
4328
4329 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4330 assert(is_instance(mname), "wrong type");
4331 mname->obj_field_put(_method_offset, resolved_method);
4332 }
4333
4334 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4335 assert(is_instance(mname), "wrong type");
4336 return (intptr_t) mname->address_field(_vmindex_offset);
4337 }
4338
4339 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4340 assert(is_instance(mname), "wrong type");
4341 mname->address_field_put(_vmindex_offset, (address) index);
4342 }
4343
4344
4345 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4346 assert(is_instance(resolved_method), "wrong type");
4347 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4348 assert(m->is_method(), "must be");
4349 return m;
4350 }
4351
4352 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4353 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4354 assert(is_instance(resolved_method), "wrong type");
4355 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4356 }
4357
4358 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4359 assert(is_instance(resolved_method), "wrong type");
4360 resolved_method->obj_field_put(_vmholder_offset, holder);
4361 }
4362
4363 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4364 const Method* method = m();
4365
4366 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4367 oop resolved_method = ResolvedMethodTable::find_method(method);
4368 if (resolved_method != nullptr) {
4369 return resolved_method;
4370 }
4371
4372 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4373 if (!k->is_initialized()) {
4374 k->initialize(CHECK_NULL);
4375 }
4376
4377 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4378
4379 NoSafepointVerifier nsv;
4380
4381 if (method->is_old()) {
4382 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4383 method->get_new_method();
4384 }
4385
4386 InstanceKlass* holder = method->method_holder();
4387
4388 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4389 // Add a reference to the loader (actually mirror because hidden classes may not have
4390 // distinct loaders) to ensure the metadata is kept alive.
4391 // This mirror may be different than the one in clazz field.
4392 set_vmholder(new_resolved_method, holder->java_mirror());
4393
4394 // Set flag in class to indicate this InstanceKlass has entries in the table
4395 // to avoid walking table during redefinition if none of the redefined classes
4396 // have any membernames in the table.
4397 holder->set_has_resolved_methods();
4398
4399 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4400 }
4401
4402 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4403 assert(is_instance(lform), "wrong type");
4404 return lform->obj_field(_vmentry_offset);
4405 }
4406
4407
4408 // Support for java_lang_invoke_MethodType
4409
4410 int java_lang_invoke_MethodType::_rtype_offset;
4411 int java_lang_invoke_MethodType::_ptypes_offset;
4412
4413 #define METHODTYPE_FIELDS_DO(macro) \
4414 macro(_rtype_offset, k, "rtype", class_signature, false); \
4415 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4416
4417 void java_lang_invoke_MethodType::compute_offsets() {
4418 InstanceKlass* k = vmClasses::MethodType_klass();
4419 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4420 }
4421
4422 #if INCLUDE_CDS
4423 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4424 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4425 }
4426 #endif
4427
4428 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4429 st->print("(");
4430 objArrayOop pts = ptypes(mt);
4431 if (pts != nullptr) {
4432 for (int i = 0, limit = pts->length(); i < limit; i++) {
4433 java_lang_Class::print_signature(pts->obj_at(i), st);
4434 }
4435 } else {
4436 st->print("null");
4437 }
4438 st->print(")");
4439 oop rt = rtype(mt);
4440 if (rt != nullptr) {
4441 java_lang_Class::print_signature(rt, st);
4442 } else {
4443 st->print("null");
4444 }
4445 }
4446
4447 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4448 ResourceMark rm;
4449 stringStream buffer(128);
4450 print_signature(mt, &buffer);
4451 const char* sigstr = buffer.base();
4452 int siglen = (int) buffer.size();
4453 Symbol *name;
4454 if (!intern_if_not_found) {
4455 name = SymbolTable::probe(sigstr, siglen);
4456 } else {
4457 name = SymbolTable::new_symbol(sigstr, siglen);
4458 }
4459 return name;
4460 }
4461
4462 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4463 if (mt1 == mt2)
4464 return true;
4465 if (rtype(mt1) != rtype(mt2))
4466 return false;
4467 if (ptype_count(mt1) != ptype_count(mt2))
4468 return false;
4469 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4470 if (ptype(mt1, i) != ptype(mt2, i))
4471 return false;
4472 }
4473 return true;
4474 }
4475
4476 oop java_lang_invoke_MethodType::rtype(oop mt) {
4477 assert(is_instance(mt), "must be a MethodType");
4478 return mt->obj_field(_rtype_offset);
4479 }
4480
4481 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4482 assert(is_instance(mt), "must be a MethodType");
4483 return (objArrayOop) mt->obj_field(_ptypes_offset);
4484 }
4485
4486 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4487 return ptypes(mt)->obj_at(idx);
4488 }
4489
4490 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4491 return ptypes(mt)->length();
4492 }
4493
4494 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4495 objArrayOop pts = ptypes(mt);
4496 int count = pts->length();
4497 int slots = 0;
4498 for (int i = 0; i < count; i++) {
4499 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4500 slots += type2size[bt];
4501 }
4502 return slots;
4503 }
4504
4505 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4506 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4507 return type2size[bt];
4508 }
4509
4510
4511 // Support for java_lang_invoke_CallSite
4512
4513 int java_lang_invoke_CallSite::_target_offset;
4514 int java_lang_invoke_CallSite::_context_offset;
4515
4516 #define CALLSITE_FIELDS_DO(macro) \
4517 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4518 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4519
4520 void java_lang_invoke_CallSite::compute_offsets() {
4521 InstanceKlass* k = vmClasses::CallSite_klass();
4522 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4523 }
4524
4525 #if INCLUDE_CDS
4526 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4527 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4528 }
4529 #endif
4530
4531 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4532 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4533
4534 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4535 return dep_oop;
4536 }
4537
4538 // Support for java_lang_invoke_ConstantCallSite
4539
4540 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4541
4542 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4543 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4544
4545 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4546 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4547 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4548 }
4549
4550 #if INCLUDE_CDS
4551 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4552 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4553 }
4554 #endif
4555
4556 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4557
4558 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4559 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4560
4561 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4562 InstanceKlass* k = vmClasses::Context_klass();
4563 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4564 }
4565
4566 #if INCLUDE_CDS
4567 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4568 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4569 }
4570 #endif
4571
4572 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4573 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4574 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4575 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4576 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4577 return dep_ctx;
4578 }
4579
4580 // Support for java_security_AccessControlContext
4581
4582 int java_security_AccessControlContext::_context_offset;
4583 int java_security_AccessControlContext::_privilegedContext_offset;
4584 int java_security_AccessControlContext::_isPrivileged_offset;
4585 int java_security_AccessControlContext::_isAuthorized_offset;
4586
4587 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4588 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4589 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4590 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4591 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4592
4593 void java_security_AccessControlContext::compute_offsets() {
4594 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4595 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4596 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4597 }
4598
4599 #if INCLUDE_CDS
4600 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4601 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4602 }
4603 #endif
4604
4605 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4606 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4607 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4608 // Ensure klass is initialized
4609 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4610 // Allocate result
4611 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4612 // Fill in values
4613 result->obj_field_put(_context_offset, context());
4614 result->obj_field_put(_privilegedContext_offset, privileged_context());
4615 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4616 result->bool_field_put(_isAuthorized_offset, true);
4617 return result;
4618 }
4619
4620
4621 // Support for java_lang_ClassLoader
4622
4623 int java_lang_ClassLoader::_loader_data_offset;
4624 int java_lang_ClassLoader::_parallelCapable_offset;
4625 int java_lang_ClassLoader::_name_offset;
4626 int java_lang_ClassLoader::_nameAndId_offset;
4627 int java_lang_ClassLoader::_unnamedModule_offset;
4628 int java_lang_ClassLoader::_parent_offset;
4629
4630 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4631 assert(loader != nullptr, "loader must not be null");
4632 assert(oopDesc::is_oop(loader), "loader must be oop");
4633 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4634 }
4635
4636 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4637 assert(loader != nullptr, "loader must not be null");
4638 assert(oopDesc::is_oop(loader), "loader must be oop");
4639 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4640 }
4641
4642 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4643 assert(loader != nullptr, "loader must not be null");
4644 assert(oopDesc::is_oop(loader), "loader must be oop");
4645 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4646 }
4647
4648 #define CLASSLOADER_FIELDS_DO(macro) \
4649 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4650 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4651 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4652 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4653 macro(_parent_offset, k1, "parent", classloader_signature, false)
4654
4655 void java_lang_ClassLoader::compute_offsets() {
4656 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4657 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4658
4659 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4660 }
4661
4662 #if INCLUDE_CDS
4663 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4664 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4665 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4666 }
4667 #endif
4668
4669 oop java_lang_ClassLoader::parent(oop loader) {
4670 assert(is_instance(loader), "loader must be oop");
4671 return loader->obj_field(_parent_offset);
4672 }
4673
4674 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4675 assert(is_instance(loader), "loader must be oop");
4676 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4677 }
4678
4679 // Returns the name field of this class loader. If the name field has not
4680 // been set, null will be returned.
4681 oop java_lang_ClassLoader::name(oop loader) {
4682 assert(is_instance(loader), "loader must be oop");
4683 return loader->obj_field(_name_offset);
4684 }
4685
4686 // Returns the nameAndId field of this class loader. The format is
4687 // as follows:
4688 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4689 // If the defining loader has no name then <qualified-class-name> @<id>
4690 // If built-in loader, then omit '@<id>' as there is only one instance.
4691 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4692 oop java_lang_ClassLoader::nameAndId(oop loader) {
4693 assert(is_instance(loader), "loader must be oop");
4694 return loader->obj_field(_nameAndId_offset);
4695 }
4696
4697 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4698 assert(is_instance(loader), "loader must be oop");
4699 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4700 oop acl = loader;
4701 debug_only(jint loop_count = 0);
4702 // This loop taken verbatim from ClassLoader.java:
4703 do {
4704 acl = parent(acl);
4705 if (cl == acl) {
4706 return true;
4707 }
4708 assert(++loop_count > 0, "loop_count overflow");
4709 } while (acl != nullptr);
4710 return false;
4711 }
4712
4713 bool java_lang_ClassLoader::is_instance(oop obj) {
4714 return obj != nullptr && is_subclass(obj->klass());
4715 }
4716
4717
4718 // For class loader classes, parallelCapable defined
4719 // based on non-null field
4720 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4721 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4722 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4723 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4724 }
4725
4726 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4727 // Fix for 4474172; see evaluation for more details
4728 loader = non_reflection_class_loader(loader);
4729
4730 oop cl = SystemDictionary::java_system_loader();
4731 while(cl != nullptr) {
4732 if (cl == loader) return true;
4733 cl = parent(cl);
4734 }
4735 return false;
4736 }
4737
4738 // Return true if this is one of the class loaders associated with
4739 // the generated bytecodes for serialization constructor returned
4740 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
4741 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4742 if (loader != nullptr) {
4743 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4744 // This might be null in non-1.4 JDKs
4745 return (delegating_cl_class != nullptr && loader->is_a(delegating_cl_class));
4746 }
4747 return false;
4748 }
4749
4750 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4751 // See whether this is one of the class loaders associated with
4752 // the generated bytecodes for reflection, and if so, "magically"
4753 // delegate to its parent to prevent class loading from occurring
4754 // in places where applications using reflection didn't expect it.
4755 if (is_reflection_class_loader(loader)) {
4756 return parent(loader);
4757 }
4758 return loader;
4759 }
4760
4761 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4762 assert(is_instance(loader), "loader must be oop");
4763 return loader->obj_field(_unnamedModule_offset);
4764 }
4765
4766 // Support for java_lang_System
4767 //
4768
4769 int java_lang_System::_static_in_offset;
4770 int java_lang_System::_static_out_offset;
4771 int java_lang_System::_static_err_offset;
4772 int java_lang_System::_static_security_offset;
4773 int java_lang_System::_static_allow_security_offset;
4774 int java_lang_System::_static_never_offset;
4775
4776 #define SYSTEM_FIELDS_DO(macro) \
4777 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4778 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4779 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4780 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4781 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4782 macro(_static_never_offset, k, "NEVER", int_signature, true)
4783
4784 void java_lang_System::compute_offsets() {
4785 InstanceKlass* k = vmClasses::System_klass();
4786 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4787 }
4788
4789 // This field tells us that a security manager can never be installed so we
4790 // can completely skip populating the ProtectionDomainCacheTable.
4791 bool java_lang_System::allow_security_manager() {
4792 static int initialized = false;
4793 static bool allowed = true; // default
4794 if (!initialized) {
4795 oop base = vmClasses::System_klass()->static_field_base_raw();
4796 int never = base->int_field(_static_never_offset);
4797 allowed = (base->int_field(_static_allow_security_offset) != never);
4798 initialized = true;
4799 }
4800 return allowed;
4801 }
4802
4803 // This field tells us that a security manager is installed.
4804 bool java_lang_System::has_security_manager() {
4805 oop base = vmClasses::System_klass()->static_field_base_raw();
4806 return base->obj_field(_static_security_offset) != nullptr;
4807 }
4808
4809 #if INCLUDE_CDS
4810 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4811 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4812 }
4813 #endif
4814
4815 // Support for jdk_internal_misc_UnsafeConstants
4816 //
4817 class UnsafeConstantsFixup : public FieldClosure {
4818 private:
4819 int _address_size;
4820 int _page_size;
4821 bool _big_endian;
4822 bool _use_unaligned_access;
4823 int _data_cache_line_flush_size;
4824 public:
4825 UnsafeConstantsFixup() {
4826 // round up values for all static final fields
4827 _address_size = sizeof(void*);
4828 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4829 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4830 _use_unaligned_access = UseUnalignedAccesses;
4831 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4832 }
4833
4834 void do_field(fieldDescriptor* fd) {
4835 oop mirror = fd->field_holder()->java_mirror();
4836 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4837 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4838 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4839 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4840 if (fd->name() == vmSymbols::address_size_name()) {
4841 mirror->int_field_put(fd->offset(), _address_size);
4842 } else if (fd->name() == vmSymbols::page_size_name()) {
4843 mirror->int_field_put(fd->offset(), _page_size);
4844 } else if (fd->name() == vmSymbols::big_endian_name()) {
4845 mirror->bool_field_put(fd->offset(), _big_endian);
4846 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4847 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4848 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4849 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4850 } else {
4851 assert(false, "unexpected UnsafeConstants field");
4852 }
4853 }
4854 };
4855
4856 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4857 UnsafeConstantsFixup fixup;
4858 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4859 }
4860
4861
4862 // java_lang_StackTraceElement
4863
4864 int java_lang_StackTraceElement::_methodName_offset;
4865 int java_lang_StackTraceElement::_fileName_offset;
4866 int java_lang_StackTraceElement::_lineNumber_offset;
4867 int java_lang_StackTraceElement::_moduleName_offset;
4868 int java_lang_StackTraceElement::_moduleVersion_offset;
4869 int java_lang_StackTraceElement::_classLoaderName_offset;
4870 int java_lang_StackTraceElement::_declaringClass_offset;
4871 int java_lang_StackTraceElement::_declaringClassObject_offset;
4872
4873 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4874 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4875 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4876 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4877 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4878 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4879 macro(_methodName_offset, k, "methodName", string_signature, false); \
4880 macro(_fileName_offset, k, "fileName", string_signature, false); \
4881 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4882
4883 // Support for java_lang_StackTraceElement
4884 void java_lang_StackTraceElement::compute_offsets() {
4885 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4886 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4887 }
4888
4889 #if INCLUDE_CDS
4890 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4891 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4892 }
4893 #endif
4894
4895 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4896 element->obj_field_put(_fileName_offset, value);
4897 }
4898
4899 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4900 element->obj_field_put(_declaringClass_offset, value);
4901 }
4902
4903 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4904 element->obj_field_put(_methodName_offset, value);
4905 }
4906
4907 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4908 element->int_field_put(_lineNumber_offset, value);
4909 }
4910
4911 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4912 element->obj_field_put(_moduleName_offset, value);
4913 }
4914
4915 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4916 element->obj_field_put(_moduleVersion_offset, value);
4917 }
4918
4919 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4920 element->obj_field_put(_classLoaderName_offset, value);
4921 }
4922
4923 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4924 element->obj_field_put(_declaringClassObject_offset, value);
4925 }
4926
4927
4928 // java_lang_AssertionStatusDirectives
4929
4930 int java_lang_AssertionStatusDirectives::_classes_offset;
4931 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4932 int java_lang_AssertionStatusDirectives::_packages_offset;
4933 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4934 int java_lang_AssertionStatusDirectives::_deflt_offset;
4935
4936 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4937 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4938 macro(_classes_offset, k, "classes", string_array_signature, false); \
4939 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4940 macro(_packages_offset, k, "packages", string_array_signature, false); \
4941 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4942 macro(_deflt_offset, k, "deflt", bool_signature, false)
4943
4944 void java_lang_AssertionStatusDirectives::compute_offsets() {
4945 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4946 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4947 }
4948
4949 #if INCLUDE_CDS
4950 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4951 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4952 }
4953 #endif
4954
4955 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4956 o->obj_field_put(_classes_offset, val);
4957 }
4958
4959 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4960 o->obj_field_put(_classEnabled_offset, val);
4961 }
4962
4963 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4964 o->obj_field_put(_packages_offset, val);
4965 }
4966
4967 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4968 o->obj_field_put(_packageEnabled_offset, val);
4969 }
4970
4971 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4972 o->bool_field_put(_deflt_offset, val);
4973 }
4974
4975 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4976
4977 #define AOS_FIELDS_DO(macro) \
4978 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4979
4980 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4981 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4982 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4983 }
4984
4985 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4986 assert(_owner_offset != 0, "Must be initialized");
4987 return obj->obj_field(_owner_offset);
4988 }
4989
4990 #if INCLUDE_CDS
4991 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4992 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4993 }
4994 #endif
4995
4996 int vector_VectorPayload::_payload_offset;
4997
4998 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4999 macro(_payload_offset, k, "payload", object_signature, false)
5000
5001 void vector_VectorPayload::compute_offsets() {
5002 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5003 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5004 }
5005
5006 #if INCLUDE_CDS
5007 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5008 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5009 }
5010 #endif
5011
5012 void vector_VectorPayload::set_payload(oop o, oop val) {
5013 o->obj_field_put(_payload_offset, val);
5014 }
5015
5016 bool vector_VectorPayload::is_instance(oop obj) {
5017 return obj != nullptr && is_subclass(obj->klass());
5018 }
5019
5020 int java_lang_Integer_IntegerCache::_static_cache_offset;
5021 int java_lang_Long_LongCache::_static_cache_offset;
5022 int java_lang_Character_CharacterCache::_static_cache_offset;
5023 int java_lang_Short_ShortCache::_static_cache_offset;
5024 int java_lang_Byte_ByteCache::_static_cache_offset;
5025
5026 #define INTEGER_CACHE_FIELDS_DO(macro) \
5027 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5028
5029 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5030 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5031 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5032 }
5033
5034 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5035 oop base = ik->static_field_base_raw();
5036 return objArrayOop(base->obj_field(_static_cache_offset));
5037 }
5038
5039 Symbol* java_lang_Integer_IntegerCache::symbol() {
5040 return vmSymbols::java_lang_Integer_IntegerCache();
5041 }
5042
5043 #if INCLUDE_CDS
5044 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5045 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5046 }
5047 #endif
5048 #undef INTEGER_CACHE_FIELDS_DO
5049
5050 jint java_lang_Integer::value(oop obj) {
5051 jvalue v;
5052 java_lang_boxing_object::get_value(obj, &v);
5053 return v.i;
5054 }
5055
5056 #define LONG_CACHE_FIELDS_DO(macro) \
5057 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5058
5059 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5060 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5061 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5062 }
5063
5064 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5065 oop base = ik->static_field_base_raw();
5066 return objArrayOop(base->obj_field(_static_cache_offset));
5067 }
5068
5069 Symbol* java_lang_Long_LongCache::symbol() {
5070 return vmSymbols::java_lang_Long_LongCache();
5071 }
5072
5073 #if INCLUDE_CDS
5074 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5075 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5076 }
5077 #endif
5078 #undef LONG_CACHE_FIELDS_DO
5079
5080 jlong java_lang_Long::value(oop obj) {
5081 jvalue v;
5082 java_lang_boxing_object::get_value(obj, &v);
5083 return v.j;
5084 }
5085
5086 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5087 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5088
5089 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5090 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5091 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5092 }
5093
5094 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5095 oop base = ik->static_field_base_raw();
5096 return objArrayOop(base->obj_field(_static_cache_offset));
5097 }
5098
5099 Symbol* java_lang_Character_CharacterCache::symbol() {
5100 return vmSymbols::java_lang_Character_CharacterCache();
5101 }
5102
5103 #if INCLUDE_CDS
5104 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5105 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5106 }
5107 #endif
5108 #undef CHARACTER_CACHE_FIELDS_DO
5109
5110 jchar java_lang_Character::value(oop obj) {
5111 jvalue v;
5112 java_lang_boxing_object::get_value(obj, &v);
5113 return v.c;
5114 }
5115
5116 #define SHORT_CACHE_FIELDS_DO(macro) \
5117 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5118
5119 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5120 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5121 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5122 }
5123
5124 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5125 oop base = ik->static_field_base_raw();
5126 return objArrayOop(base->obj_field(_static_cache_offset));
5127 }
5128
5129 Symbol* java_lang_Short_ShortCache::symbol() {
5130 return vmSymbols::java_lang_Short_ShortCache();
5131 }
5132
5133 #if INCLUDE_CDS
5134 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5135 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5136 }
5137 #endif
5138 #undef SHORT_CACHE_FIELDS_DO
5139
5140 jshort java_lang_Short::value(oop obj) {
5141 jvalue v;
5142 java_lang_boxing_object::get_value(obj, &v);
5143 return v.s;
5144 }
5145
5146 #define BYTE_CACHE_FIELDS_DO(macro) \
5147 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5148
5149 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5150 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5151 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5152 }
5153
5154 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5155 oop base = ik->static_field_base_raw();
5156 return objArrayOop(base->obj_field(_static_cache_offset));
5157 }
5158
5159 Symbol* java_lang_Byte_ByteCache::symbol() {
5160 return vmSymbols::java_lang_Byte_ByteCache();
5161 }
5162
5163 #if INCLUDE_CDS
5164 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5165 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5166 }
5167 #endif
5168 #undef BYTE_CACHE_FIELDS_DO
5169
5170 jbyte java_lang_Byte::value(oop obj) {
5171 jvalue v;
5172 java_lang_boxing_object::get_value(obj, &v);
5173 return v.b;
5174 }
5175
5176 int java_lang_Boolean::_static_TRUE_offset;
5177 int java_lang_Boolean::_static_FALSE_offset;
5178
5179 #define BOOLEAN_FIELDS_DO(macro) \
5180 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5181 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5182
5183
5184 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5185 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5186 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5187 }
5188
5189 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5190 oop base = ik->static_field_base_raw();
5191 return base->obj_field(_static_TRUE_offset);
5192 }
5193
5194 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5195 oop base = ik->static_field_base_raw();
5196 return base->obj_field(_static_FALSE_offset);
5197 }
5198
5199 Symbol* java_lang_Boolean::symbol() {
5200 return vmSymbols::java_lang_Boolean();
5201 }
5202
5203 #if INCLUDE_CDS
5204 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5205 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5206 }
5207 #endif
5208 #undef BOOLEAN_CACHE_FIELDS_DO
5209
5210 jboolean java_lang_Boolean::value(oop obj) {
5211 jvalue v;
5212 java_lang_boxing_object::get_value(obj, &v);
5213 return v.z;
5214 }
5215
5216 // java_lang_reflect_RecordComponent
5217
5218 int java_lang_reflect_RecordComponent::_clazz_offset;
5219 int java_lang_reflect_RecordComponent::_name_offset;
5220 int java_lang_reflect_RecordComponent::_type_offset;
5221 int java_lang_reflect_RecordComponent::_accessor_offset;
5222 int java_lang_reflect_RecordComponent::_signature_offset;
5223 int java_lang_reflect_RecordComponent::_annotations_offset;
5224 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5225
5226 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5227 macro(_clazz_offset, k, "clazz", class_signature, false); \
5228 macro(_name_offset, k, "name", string_signature, false); \
5229 macro(_type_offset, k, "type", class_signature, false); \
5230 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5231 macro(_signature_offset, k, "signature", string_signature, false); \
5232 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5233 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5234
5235 // Support for java_lang_reflect_RecordComponent
5236 void java_lang_reflect_RecordComponent::compute_offsets() {
5237 InstanceKlass* k = vmClasses::RecordComponent_klass();
5238 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5239 }
5240
5241 #if INCLUDE_CDS
5242 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5243 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5244 }
5245 #endif
5246
5247 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5248 element->obj_field_put(_clazz_offset, value);
5249 }
5250
5251 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5252 element->obj_field_put(_name_offset, value);
5253 }
5254
5255 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5256 element->obj_field_put(_type_offset, value);
5257 }
5258
5259 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5260 element->obj_field_put(_accessor_offset, value);
5261 }
5262
5263 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5264 element->obj_field_put(_signature_offset, value);
5265 }
5266
5267 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5268 element->obj_field_put(_annotations_offset, value);
5269 }
5270
5271 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5272 element->obj_field_put(_typeAnnotations_offset, value);
5273 }
5274
5275 // java_lang_InternalError
5276 int java_lang_InternalError::_during_unsafe_access_offset;
5277
5278 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5279 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5280 }
5281
5282 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5283 return internal_error->bool_field(_during_unsafe_access_offset);
5284 }
5285
5286 void java_lang_InternalError::compute_offsets() {
5287 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5288 }
5289
5290 #if INCLUDE_CDS
5291 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5292 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5293 }
5294 #endif
5295
5296 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5297 f(java_lang_Class) \
5298 f(java_lang_String) \
5299 f(java_lang_ref_Reference) \
5300 //end
5301
5302 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5303 f(java_lang_System) \
5304 f(java_lang_ClassLoader) \
5305 f(java_lang_Throwable) \
5306 f(java_lang_Thread) \
5307 f(java_lang_Thread_FieldHolder) \
5308 f(java_lang_Thread_Constants) \
5309 f(java_lang_ThreadGroup) \
5310 f(java_lang_VirtualThread) \
5311 f(java_lang_InternalError) \
5312 f(java_lang_AssertionStatusDirectives) \
5313 f(java_lang_ref_SoftReference) \
5314 f(java_lang_invoke_MethodHandle) \
5315 f(java_lang_invoke_DirectMethodHandle) \
5316 f(java_lang_invoke_MemberName) \
5317 f(java_lang_invoke_ResolvedMethodName) \
5318 f(java_lang_invoke_LambdaForm) \
5319 f(java_lang_invoke_MethodType) \
5320 f(java_lang_invoke_CallSite) \
5321 f(java_lang_invoke_ConstantCallSite) \
5322 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5323 f(java_security_AccessControlContext) \
5324 f(java_lang_reflect_AccessibleObject) \
5325 f(java_lang_reflect_Method) \
5326 f(java_lang_reflect_Constructor) \
5327 f(java_lang_reflect_Field) \
5328 f(java_lang_reflect_RecordComponent) \
5329 f(reflect_ConstantPool) \
5330 f(java_lang_reflect_Parameter) \
5331 f(java_lang_Module) \
5332 f(java_lang_StackTraceElement) \
5333 f(java_lang_ClassFrameInfo) \
5334 f(java_lang_StackFrameInfo) \
5335 f(java_lang_LiveStackFrameInfo) \
5336 f(jdk_internal_vm_ContinuationScope) \
5337 f(jdk_internal_vm_Continuation) \
5338 f(jdk_internal_vm_StackChunk) \
5339 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5340 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5341 f(jdk_internal_foreign_abi_ABIDescriptor) \
5342 f(jdk_internal_foreign_abi_VMStorage) \
5343 f(jdk_internal_foreign_abi_CallConv) \
5344 f(jdk_internal_misc_UnsafeConstants) \
5345 f(java_lang_boxing_object) \
5346 f(vector_VectorPayload) \
5347 //end
5348
5349 #define BASIC_JAVA_CLASSES_DO(f) \
5350 BASIC_JAVA_CLASSES_DO_PART1(f) \
5351 BASIC_JAVA_CLASSES_DO_PART2(f)
5352
5353 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5354
5355 // Compute field offsets of all the classes in this file
5356 void JavaClasses::compute_offsets() {
5357 if (CDSConfig::is_using_archive()) {
5358 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5359 JvmtiExport::has_early_class_hook_env()),
5360 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5361 // None of the classes used by the rest of this function can be replaced by
5362 // JVMTI ClassFileLoadHook.
5363 // We are safe to use the archived offsets, which have already been restored
5364 // by JavaClasses::serialize_offsets, without computing the offsets again.
5365 return;
5366 }
5367
5368 // We have already called the compute_offsets() of the
5369 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5370 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5371 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5372 }
5373
5374 #if INCLUDE_CDS
5375 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5376
5377 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5378 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5379 }
5380 #endif
5381
5382 #if INCLUDE_CDS_JAVA_HEAP
5383 bool JavaClasses::is_supported_for_archiving(oop obj) {
5384 Klass* klass = obj->klass();
5385
5386 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5387 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5388 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5389 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5390 // So for now we cannot not support these classes for archiving.
5391 //
5392 // These objects typically are not referenced by static fields, but rather by resolved
5393 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5394 klass == vmClasses::ResolvedMethodName_klass() ||
5395 klass == vmClasses::MemberName_klass() ||
5396 klass == vmClasses::Context_klass() ||
5397 // It's problematic to archive Reference objects. One of the reasons is that
5398 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5399 klass->is_subclass_of(vmClasses::Reference_klass())) {
5400 return false;
5401 }
5402
5403 return true;
5404 }
5405 #endif
5406
5407 #ifndef PRODUCT
5408
5409 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5410
5411 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5412 const char* field_sig) {
5413 EXCEPTION_MARK;
5414 fieldDescriptor fd;
5415 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5416 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5417 InstanceKlass* ik = InstanceKlass::cast(k);
5418 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5419 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5420 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5421 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5422 return false;
5423 }
5424 if (fd.is_static()) {
5425 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5426 return false;
5427 }
5428 if (fd.offset() == deserialized_offset ) {
5429 return true;
5430 } else {
5431 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5432 klass_name, field_name, deserialized_offset, fd.offset());
5433 return false;
5434 }
5435 }
5436
5437 void JavaClasses::check_offsets() {
5438 bool valid = true;
5439
5440 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5441 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5442
5443 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5444 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5445
5446 // Boxed primitive objects (java_lang_boxing_object)
5447
5448 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5449 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5450 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5451 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5452 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5453 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5454 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5455 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5456
5457 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5458 }
5459
5460 #endif // PRODUCT
5461
5462 int InjectedField::compute_offset() {
5463 InstanceKlass* ik = InstanceKlass::cast(klass());
5464 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5465 if (!may_be_java && !fs.field_flags().is_injected()) {
5466 // Only look at injected fields
5467 continue;
5468 }
5469 if (fs.name() == name() && fs.signature() == signature()) {
5470 return fs.offset();
5471 }
5472 }
5473 ResourceMark rm;
5474 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)" : "");
5475 #ifndef PRODUCT
5476 ik->print();
5477 tty->print_cr("all fields:");
5478 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5479 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5480 }
5481 #endif //PRODUCT
5482 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5483 return -1;
5484 }
5485
5486 void javaClasses_init() {
5487 JavaClasses::compute_offsets();
5488 JavaClasses::check_offsets();
5489 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5490 }