1 /*
2 * Copyright (c) 1997, 2023, 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/flatArrayKlass.hpp"
57 #include "oops/inlineKlass.inline.hpp"
58 #include "oops/instanceKlass.inline.hpp"
59 #include "oops/instanceMirrorKlass.inline.hpp"
60 #include "oops/klass.hpp"
61 #include "oops/klass.inline.hpp"
62 #include "oops/method.inline.hpp"
63 #include "oops/objArrayKlass.hpp"
64 #include "oops/objArrayOop.inline.hpp"
65 #include "oops/oopCast.inline.hpp"
66 #include "oops/oop.inline.hpp"
67 #include "oops/symbol.hpp"
68 #include "oops/recordComponent.hpp"
69 #include "oops/typeArrayOop.inline.hpp"
70 #include "prims/jvmtiExport.hpp"
71 #include "prims/methodHandles.hpp"
72 #include "prims/resolvedMethodTable.hpp"
73 #include "runtime/continuationEntry.inline.hpp"
74 #include "runtime/continuationJavaClasses.inline.hpp"
75 #include "runtime/fieldDescriptor.inline.hpp"
76 #include "runtime/frame.inline.hpp"
77 #include "runtime/handles.inline.hpp"
78 #include "runtime/handshake.hpp"
79 #include "runtime/init.hpp"
80 #include "runtime/interfaceSupport.inline.hpp"
81 #include "runtime/java.hpp"
82 #include "runtime/javaCalls.hpp"
83 #include "runtime/javaThread.hpp"
84 #include "runtime/jniHandles.inline.hpp"
85 #include "runtime/reflectionUtils.hpp"
86 #include "runtime/safepoint.hpp"
87 #include "runtime/safepointVerifiers.hpp"
88 #include "runtime/threadSMR.hpp"
89 #include "runtime/vframe.inline.hpp"
90 #include "runtime/vm_version.hpp"
91 #include "utilities/align.hpp"
92 #include "utilities/globalDefinitions.hpp"
93 #include "utilities/growableArray.hpp"
94 #include "utilities/preserveException.hpp"
95 #include "utilities/utf8.hpp"
96 #if INCLUDE_JVMCI
97 #include "jvmci/jvmciJavaClasses.hpp"
98 #endif
99
100 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
101 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
102
103 InjectedField JavaClasses::_injected_fields[] = {
104 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
105 };
106
107 // Register native methods of Object
108 void java_lang_Object::register_natives(TRAPS) {
109 InstanceKlass* obj = vmClasses::Object_klass();
110 Method::register_native(obj, vmSymbols::hashCode_name(),
111 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
112 Method::register_native(obj, vmSymbols::wait_name(),
113 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
114 Method::register_native(obj, vmSymbols::notify_name(),
115 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
116 Method::register_native(obj, vmSymbols::notifyAll_name(),
117 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
118 Method::register_native(obj, vmSymbols::clone_name(),
119 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
120 }
121
122 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
123 return _injected_fields[(int)id].compute_offset();
124 }
125
126 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
127 *field_count = 0;
128
129 vmSymbolID sid = vmSymbols::find_sid(class_name);
130 if (sid == vmSymbolID::NO_SID) {
131 // Only well known classes can inject fields
132 return nullptr;
133 }
134
135 int count = 0;
136 int start = -1;
137
138 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
139 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
140 count++; \
141 if (start == -1) { \
142 start = (int)InjectedFieldID::klass##_##name##_enum; \
143 } \
144 }
145 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
146 #undef LOOKUP_INJECTED_FIELD
147
148 if (start != -1) {
149 *field_count = count;
150 return _injected_fields + start;
151 }
152 return nullptr;
153 }
154
155
156 // Helpful routine for computing field offsets at run time rather than hardcoding them
157 // Finds local fields only, including static fields. Static field offsets are from the
158 // beginning of the mirror.
159 void JavaClasses::compute_offset(int &dest_offset,
160 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
161 bool is_static) {
162 fieldDescriptor fd;
163 if (ik == nullptr) {
164 ResourceMark rm;
165 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
166 vm_exit_during_initialization("Invalid layout of well-known class");
167 }
168
169 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
170 ResourceMark rm;
171 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
172 name_symbol->as_C_string(), signature_symbol->as_C_string());
173 #ifndef PRODUCT
174 // Prints all fields and offsets
175 Log(class) lt;
176 LogStream ls(lt.error());
177 ik->print_on(&ls);
178 #endif //PRODUCT
179 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
180 }
181 dest_offset = fd.offset();
182 }
183
184 // Overloading to pass name as a string.
185 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
186 const char* name_string, Symbol* signature_symbol,
187 bool is_static) {
188 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
189 if (name == nullptr) {
190 ResourceMark rm;
191 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
192 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
193 }
194 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
195 }
196
197 // java_lang_String
198
199 int java_lang_String::_value_offset;
200 int java_lang_String::_hash_offset;
201 int java_lang_String::_hashIsZero_offset;
202 int java_lang_String::_coder_offset;
203 int java_lang_String::_flags_offset;
204
205 bool java_lang_String::_initialized;
206
207
208 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
209 uint8_t* addr = flags_addr(java_string);
210 uint8_t value = Atomic::load(addr);
211 while ((value & flag_mask) == 0) {
212 uint8_t old_value = value;
213 value |= flag_mask;
214 value = Atomic::cmpxchg(addr, old_value, value);
215 if (value == old_value) return false; // Flag bit changed from 0 to 1.
216 }
217 return true; // Flag bit is already 1.
218 }
219
220 #define STRING_FIELDS_DO(macro) \
221 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
222 macro(_hash_offset, k, "hash", int_signature, false); \
223 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
224 macro(_coder_offset, k, "coder", byte_signature, false);
225
226 void java_lang_String::compute_offsets() {
227 if (_initialized) {
228 return;
229 }
230
231 InstanceKlass* k = vmClasses::String_klass();
232 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
233 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
234
235 _initialized = true;
236 }
237
238 #if INCLUDE_CDS
239 void java_lang_String::serialize_offsets(SerializeClosure* f) {
240 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
241 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
242 f->do_bool(&_initialized);
243 }
244 #endif
245
246 class CompactStringsFixup : public FieldClosure {
247 private:
248 bool _value;
249
250 public:
251 CompactStringsFixup(bool value) : _value(value) {}
252
253 void do_field(fieldDescriptor* fd) {
254 if (fd->name() == vmSymbols::compact_strings_name()) {
255 oop mirror = fd->field_holder()->java_mirror();
256 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
257 assert(mirror != nullptr, "String must have mirror already");
258 mirror->bool_field_put(fd->offset(), _value);
259 }
260 }
261 };
262
263 void java_lang_String::set_compact_strings(bool value) {
264 CompactStringsFixup fix(value);
265 vmClasses::String_klass()->do_local_static_fields(&fix);
266 }
267
268 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
269 assert(_initialized, "Must be initialized");
270 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
271
272 // Create the String object first, so there's a chance that the String
273 // and the char array it points to end up in the same cache line.
274 oop obj;
275 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
276
277 // Create the char array. The String object must be handlized here
278 // because GC can happen as a result of the allocation attempt.
279 Handle h_obj(THREAD, obj);
280 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
281 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
282
283 // Point the String at the char array
284 obj = h_obj();
285 set_value(obj, buffer);
286 // No need to zero the offset, allocation zero'ed the entire String object
287 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
288 return h_obj;
289 }
290
291 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
292 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
293 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
294 typeArrayOop buffer = value(h_obj());
295 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
296 if (is_latin1) {
297 for (int index = 0; index < length; index++) {
298 buffer->byte_at_put(index, (jbyte)unicode[index]);
299 }
300 } else {
301 for (int index = 0; index < length; index++) {
302 buffer->char_at_put(index, unicode[index]);
303 }
304 }
305
306 #ifdef ASSERT
307 {
308 ResourceMark rm;
309 char* expected = UNICODE::as_utf8(unicode, length);
310 char* actual = as_utf8_string(h_obj());
311 if (strcmp(expected, actual) != 0) {
312 fatal("Unicode conversion failure: %s --> %s", expected, actual);
313 }
314 }
315 #endif
316
317 return h_obj;
318 }
319
320 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
321 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
322 return h_obj();
323 }
324
325 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
326 if (utf8_str == nullptr) {
327 return Handle();
328 }
329 bool has_multibyte, is_latin1;
330 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
331 if (!CompactStrings) {
332 has_multibyte = true;
333 is_latin1 = false;
334 }
335
336 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
337 if (length > 0) {
338 if (!has_multibyte) {
339 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
340 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
341 } else if (is_latin1) {
342 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
343 } else {
344 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
345 }
346 }
347
348 #ifdef ASSERT
349 // This check is too strict when the input string is not a valid UTF8.
350 // For example, it may be created with arbitrary content via jni_NewStringUTF.
351 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
352 ResourceMark rm;
353 const char* expected = utf8_str;
354 char* actual = as_utf8_string(h_obj());
355 if (strcmp(expected, actual) != 0) {
356 fatal("String conversion failure: %s --> %s", expected, actual);
357 }
358 }
359 #endif
360
361 return h_obj;
362 }
363
364 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
365 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
366 return h_obj();
367 }
368
369 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
370 const char* utf8_str = (char*)symbol->bytes();
371 int utf8_len = symbol->utf8_length();
372
373 bool has_multibyte, is_latin1;
374 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
375 if (!CompactStrings) {
376 has_multibyte = true;
377 is_latin1 = false;
378 }
379
380 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
381 if (length > 0) {
382 if (!has_multibyte) {
383 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
384 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
385 } else if (is_latin1) {
386 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
387 } else {
388 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
389 }
390 }
391
392 #ifdef ASSERT
393 {
394 ResourceMark rm;
395 const char* expected = symbol->as_utf8();
396 char* actual = as_utf8_string(h_obj());
397 if (strncmp(expected, actual, utf8_len) != 0) {
398 fatal("Symbol conversion failure: %s --> %s", expected, actual);
399 }
400 }
401 #endif
402
403 return h_obj;
404 }
405
406 // Converts a C string to a Java String based on current encoding
407 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
408 assert(str != nullptr, "bad arguments");
409
410 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
411 static to_java_string_fn_t _to_java_string_fn = nullptr;
412
413 if (_to_java_string_fn == nullptr) {
414 void *lib_handle = os::native_java_library();
415 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
416 #if defined(_WIN32) && !defined(_WIN64)
417 if (_to_java_string_fn == nullptr) {
418 // On 32 bit Windows, also try __stdcall decorated name
419 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
420 }
421 #endif
422 if (_to_java_string_fn == nullptr) {
423 fatal("JNU_NewStringPlatform missing");
424 }
425 }
426
427 jstring js = nullptr;
428 {
429 JavaThread* thread = THREAD;
430 HandleMark hm(thread);
431 ThreadToNativeFromVM ttn(thread);
432 js = (_to_java_string_fn)(thread->jni_environment(), str);
433 }
434
435 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
436 JNIHandles::destroy_local(js); // destroy local JNIHandle.
437 return native_platform_string;
438 }
439
440 // Converts a Java String to a native C string that can be used for
441 // native OS calls.
442 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
443 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
444 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
445
446 if (_to_platform_string_fn == nullptr) {
447 void *lib_handle = os::native_java_library();
448 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
449 if (_to_platform_string_fn == nullptr) {
450 fatal("GetStringPlatformChars missing");
451 }
452 }
453
454 char *native_platform_string;
455 jstring js;
456 { JavaThread* thread = THREAD;
457 js = (jstring) JNIHandles::make_local(thread, java_string());
458 HandleMark hm(thread);
459 ThreadToNativeFromVM ttn(thread);
460 JNIEnv *env = thread->jni_environment();
461 bool is_copy;
462 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
463 assert(is_copy == JNI_TRUE, "is_copy value changed");
464 }
465
466 // Uses a store barrier and therefore needs to be in vm state
467 JNIHandles::destroy_local(js);
468
469 return native_platform_string;
470 }
471
472 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
473 ResourceMark rm(THREAD);
474 return create_from_str(java_name->as_klass_external_name(), THREAD);
475 }
476
477 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
478 jchar* result = as_unicode_string_or_null(java_string, length);
479 if (result == nullptr) {
480 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
481 }
482 return result;
483 }
484
485 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
486 typeArrayOop value = java_lang_String::value(java_string);
487 length = java_lang_String::length(java_string, value);
488 bool is_latin1 = java_lang_String::is_latin1(java_string);
489
490 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
491 if (result != nullptr) {
492 if (!is_latin1) {
493 for (int index = 0; index < length; index++) {
494 result[index] = value->char_at(index);
495 }
496 } else {
497 for (int index = 0; index < length; index++) {
498 result[index] = ((jchar) value->byte_at(index)) & 0xff;
499 }
500 }
501 }
502 return result;
503 }
504
505 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
506 // The hash and hashIsZero fields are subject to a benign data race,
507 // making it crucial to ensure that any observable result of the
508 // calculation in this method stays correct under any possible read of
509 // these fields. Necessary restrictions to allow this to be correct
510 // without explicit memory fences or similar concurrency primitives is
511 // that we can ever only write to one of these two fields for a given
512 // String instance, and that the computation is idempotent and derived
513 // from immutable state
514 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
515 if (java_lang_String::hash_is_set(java_string)) {
516 return java_string->int_field(_hash_offset);
517 }
518
519 typeArrayOop value = java_lang_String::value(java_string);
520 int length = java_lang_String::length(java_string, value);
521 bool is_latin1 = java_lang_String::is_latin1(java_string);
522
523 unsigned int hash = 0;
524 if (length > 0) {
525 if (is_latin1) {
526 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
527 } else {
528 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
529 }
530 }
531
532 if (update) {
533 if (hash != 0) {
534 java_string->int_field_put(_hash_offset, hash);
535 } else {
536 java_string->bool_field_put(_hashIsZero_offset, true);
537 }
538 }
539 return hash;
540 }
541
542 unsigned int java_lang_String::hash_code(oop java_string) {
543 return hash_code_impl(java_string, /*update=*/true);
544 }
545
546 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
547 return hash_code_impl(java_string, /*update=*/false);
548 }
549
550
551 char* java_lang_String::as_quoted_ascii(oop java_string) {
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 if (length == 0) return nullptr;
557
558 char* result;
559 int result_length;
560 if (!is_latin1) {
561 jchar* base = value->char_at_addr(0);
562 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
563 result = NEW_RESOURCE_ARRAY(char, result_length);
564 UNICODE::as_quoted_ascii(base, length, result, result_length);
565 } else {
566 jbyte* base = value->byte_at_addr(0);
567 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
568 result = NEW_RESOURCE_ARRAY(char, result_length);
569 UNICODE::as_quoted_ascii(base, length, result, result_length);
570 }
571 assert(result_length >= length + 1, "must not be shorter");
572 assert(result_length == (int)strlen(result) + 1, "must match");
573 return result;
574 }
575
576 Symbol* java_lang_String::as_symbol(oop java_string) {
577 typeArrayOop value = java_lang_String::value(java_string);
578 int length = java_lang_String::length(java_string, value);
579 bool is_latin1 = java_lang_String::is_latin1(java_string);
580 if (!is_latin1) {
581 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
582 Symbol* sym = SymbolTable::new_symbol(base, length);
583 return sym;
584 } else {
585 ResourceMark rm;
586 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
587 const char* base = UNICODE::as_utf8(position, length);
588 Symbol* sym = SymbolTable::new_symbol(base, length);
589 return sym;
590 }
591 }
592
593 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
594 typeArrayOop value = java_lang_String::value(java_string);
595 int length = java_lang_String::length(java_string, value);
596 bool is_latin1 = java_lang_String::is_latin1(java_string);
597 if (!is_latin1) {
598 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
599 return SymbolTable::probe_unicode(base, length);
600 } else {
601 ResourceMark rm;
602 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
603 const char* base = UNICODE::as_utf8(position, length);
604 return SymbolTable::probe(base, length);
605 }
606 }
607
608 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
609 assert(value_equals(value, java_lang_String::value(java_string)),
610 "value must be same as java_lang_String::value(java_string)");
611 int length = java_lang_String::length(java_string, value);
612 if (length == 0) {
613 return 0;
614 }
615 if (!java_lang_String::is_latin1(java_string)) {
616 return UNICODE::utf8_length(value->char_at_addr(0), length);
617 } else {
618 return UNICODE::utf8_length(value->byte_at_addr(0), length);
619 }
620 }
621
622 int java_lang_String::utf8_length(oop java_string) {
623 typeArrayOop value = java_lang_String::value(java_string);
624 return utf8_length(java_string, value);
625 }
626
627 char* java_lang_String::as_utf8_string(oop java_string) {
628 int length;
629 return as_utf8_string(java_string, length);
630 }
631
632 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
633 typeArrayOop value = java_lang_String::value(java_string);
634 length = java_lang_String::length(java_string, value);
635 bool is_latin1 = java_lang_String::is_latin1(java_string);
636 if (!is_latin1) {
637 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
638 return UNICODE::as_utf8(position, length);
639 } else {
640 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
641 return UNICODE::as_utf8(position, length);
642 }
643 }
644
645 // Uses a provided buffer if it's sufficiently large, otherwise allocates
646 // a resource array to fit
647 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
648 typeArrayOop value = java_lang_String::value(java_string);
649 int len = java_lang_String::length(java_string, value);
650 bool is_latin1 = java_lang_String::is_latin1(java_string);
651 if (!is_latin1) {
652 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
653 utf8_len = UNICODE::utf8_length(position, len);
654 if (utf8_len >= buflen) {
655 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
656 }
657 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
658 } else {
659 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
660 utf8_len = UNICODE::utf8_length(position, len);
661 if (utf8_len >= buflen) {
662 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
663 }
664 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
665 }
666 }
667
668 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
669 assert(value_equals(value, java_lang_String::value(java_string)),
670 "value must be same as java_lang_String::value(java_string)");
671 int length = java_lang_String::length(java_string, value);
672 bool is_latin1 = java_lang_String::is_latin1(java_string);
673 if (!is_latin1) {
674 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
675 return UNICODE::as_utf8(position, length, buf, buflen);
676 } else {
677 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
678 return UNICODE::as_utf8(position, length, buf, buflen);
679 }
680 }
681
682 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
683 typeArrayOop value = java_lang_String::value(java_string);
684 return as_utf8_string(java_string, value, buf, buflen);
685 }
686
687 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
688 typeArrayOop value = java_lang_String::value(java_string);
689 bool is_latin1 = java_lang_String::is_latin1(java_string);
690 assert(start + len <= java_lang_String::length(java_string), "just checking");
691 if (!is_latin1) {
692 jchar* position = value->char_at_addr(start);
693 return UNICODE::as_utf8(position, len);
694 } else {
695 jbyte* position = value->byte_at_addr(start);
696 return UNICODE::as_utf8(position, len);
697 }
698 }
699
700 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
701 assert(value_equals(value, java_lang_String::value(java_string)),
702 "value must be same as java_lang_String::value(java_string)");
703 assert(start + len <= java_lang_String::length(java_string), "just checking");
704 bool is_latin1 = java_lang_String::is_latin1(java_string);
705 if (!is_latin1) {
706 jchar* position = value->char_at_addr(start);
707 return UNICODE::as_utf8(position, len, buf, buflen);
708 } else {
709 jbyte* position = value->byte_at_addr(start);
710 return UNICODE::as_utf8(position, len, buf, buflen);
711 }
712 }
713
714 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
715 assert(java_string->klass() == vmClasses::String_klass(),
716 "must be java_string");
717 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
718 int length = java_lang_String::length(java_string, value);
719 if (length != len) {
720 return false;
721 }
722 bool is_latin1 = java_lang_String::is_latin1(java_string);
723 if (!is_latin1) {
724 for (int i = 0; i < len; i++) {
725 if (value->char_at(i) != chars[i]) {
726 return false;
727 }
728 }
729 } else {
730 for (int i = 0; i < len; i++) {
731 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
732 return false;
733 }
734 }
735 }
736 return true;
737 }
738
739 bool java_lang_String::equals(oop str1, oop str2) {
740 assert(str1->klass() == vmClasses::String_klass(),
741 "must be java String");
742 assert(str2->klass() == vmClasses::String_klass(),
743 "must be java String");
744 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
745 bool is_latin1 = java_lang_String::is_latin1(str1);
746 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
747 bool is_latin2 = java_lang_String::is_latin1(str2);
748
749 if (is_latin1 != is_latin2) {
750 // Strings with different coders are never equal.
751 return false;
752 }
753 return value_equals(value1, value2);
754 }
755
756 void java_lang_String::print(oop java_string, outputStream* st) {
757 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
758 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
759
760 if (value == nullptr) {
761 // This can happen if, e.g., printing a String
762 // object before its initializer has been called
763 st->print("nullptr");
764 return;
765 }
766
767 int length = java_lang_String::length(java_string, value);
768 bool is_latin1 = java_lang_String::is_latin1(java_string);
769
770 st->print("\"");
771 for (int index = 0; index < length; index++) {
772 jchar c = (!is_latin1) ? value->char_at(index) :
773 ((jchar) value->byte_at(index)) & 0xff;
774 if (c < ' ') {
775 st->print("\\x%02X", c); // print control characters e.g. \x0A
776 } else {
777 st->print("%c", c);
778 }
779 }
780 st->print("\"");
781 }
782
783 // java_lang_Class
784
785 int java_lang_Class::_klass_offset;
786 int java_lang_Class::_array_klass_offset;
787 int java_lang_Class::_oop_size_offset;
788 int java_lang_Class::_static_oop_field_count_offset;
789 int java_lang_Class::_class_loader_offset;
790 int java_lang_Class::_module_offset;
791 int java_lang_Class::_protection_domain_offset;
792 int java_lang_Class::_component_mirror_offset;
793
794 int java_lang_Class::_signers_offset;
795 int java_lang_Class::_name_offset;
796 int java_lang_Class::_source_file_offset;
797 int java_lang_Class::_classData_offset;
798 int java_lang_Class::_classRedefinedCount_offset;
799
800 bool java_lang_Class::_offsets_computed = false;
801 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
802 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
803
804 #ifdef ASSERT
805 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
806 assert(fd->has_initial_value(), "caller should have checked this");
807 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
808 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
809 }
810 #endif
811
812 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
813 DEBUG_ONLY(assert_valid_static_string_field(fd);)
814 oop string = fd->string_initial_value(CHECK);
815 mirror()->obj_field_put(fd->offset(), string);
816 }
817
818 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
819 assert(fd->has_initial_value(), "caller should have checked this");
820 BasicType t = fd->field_type();
821 switch (t) {
822 case T_BYTE:
823 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
824 break;
825 case T_BOOLEAN:
826 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
827 break;
828 case T_CHAR:
829 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
830 break;
831 case T_SHORT:
832 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
833 break;
834 case T_INT:
835 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
836 break;
837 case T_FLOAT:
838 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
839 break;
840 case T_DOUBLE:
841 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
842 break;
843 case T_LONG:
844 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
845 break;
846 default:
847 // Illegal ConstantValue attribute in class file should have been
848 // caught during classfile parsing.
849 ShouldNotReachHere();
850 }
851 }
852
853 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
854 assert(mirror.not_null() && fd->is_static(), "just checking");
855 if (fd->has_initial_value()) {
856 if (fd->field_type() != T_OBJECT) {
857 initialize_static_primitive_field(fd, mirror);
858 } else {
859 initialize_static_string_field(fd, mirror, CHECK);
860 }
861 }
862 }
863
864 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
865 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
866
867 // If the offset was read from the shared archive, it was fixed up already
868 if (!k->is_shared()) {
869 if (k->is_instance_klass()) {
870 // During bootstrap, java.lang.Class wasn't loaded so static field
871 // offsets were computed without the size added it. Go back and
872 // update all the static field offsets to included the size.
873
874 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
875 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
876 // static fields offsets are updated in this array before reencoding everything into
877 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
878
879 int java_fields;
880 int injected_fields;
881 InstanceKlass* ik = InstanceKlass::cast(k);
882 GrowableArray<FieldInfo>* fields =
883 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
884 &java_fields, &injected_fields);
885 for (int i = 0; i < fields->length(); i++) {
886 FieldInfo* fi = fields->adr_at(i);
887 if (fi->access_flags().is_static()) {
888 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
889 }
890 }
891 Array<u1>* old_stream = ik->fieldinfo_stream();
892 assert(fields->length() == (java_fields + injected_fields), "Must be");
893 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
894 ik->set_fieldinfo_stream(new_fis);
895 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
896 }
897 }
898
899 if (k->is_shared() && k->has_archived_mirror_index()) {
900 if (ArchiveHeapLoader::is_in_use()) {
901 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
902 assert(present, "Missing archived mirror for %s", k->external_name());
903 return;
904 } else {
905 k->clear_java_mirror_handle();
906 k->clear_archived_mirror_index();
907 }
908 }
909 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
910 }
911
912 void java_lang_Class::initialize_mirror_fields(Klass* k,
913 Handle mirror,
914 Handle protection_domain,
915 Handle classData,
916 TRAPS) {
917 // Set protection domain also
918 set_protection_domain(mirror(), protection_domain());
919
920 // Initialize static fields
921 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
922
923 // Set classData
924 set_class_data(mirror(), classData());
925 }
926
927 // Set the java.lang.Module module field in the java_lang_Class mirror
928 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
929 if (module.is_null()) {
930 // During startup, the module may be null only if java.base has not been defined yet.
931 // Put the class on the fixup_module_list to patch later when the java.lang.Module
932 // for java.base is known. But note that since we captured the null module another
933 // thread may have completed that initialization.
934
935 bool javabase_was_defined = false;
936 {
937 MutexLocker m1(current, Module_lock);
938 // Keep list of classes needing java.base module fixup
939 if (!ModuleEntryTable::javabase_defined()) {
940 assert(k->java_mirror() != nullptr, "Class's mirror is null");
941 k->class_loader_data()->inc_keep_alive();
942 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
943 fixup_module_field_list()->push(k);
944 } else {
945 javabase_was_defined = true;
946 }
947 }
948
949 // If java.base was already defined then patch this particular class with java.base.
950 if (javabase_was_defined) {
951 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
952 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
953 "Setting class module field, " JAVA_BASE_NAME " should be defined");
954 Handle javabase_handle(current, javabase_entry->module());
955 set_module(mirror(), javabase_handle());
956 }
957 } else {
958 assert(Universe::is_module_initialized() ||
959 (ModuleEntryTable::javabase_defined() &&
960 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
961 "Incorrect java.lang.Module specification while creating mirror");
962 set_module(mirror(), module());
963 }
964 }
965
966 // Statically allocate fixup lists because they always get created.
967 void java_lang_Class::allocate_fixup_lists() {
968 GrowableArray<Klass*>* mirror_list =
969 new (mtClass) GrowableArray<Klass*>(40, mtClass);
970 set_fixup_mirror_list(mirror_list);
971
972 GrowableArray<Klass*>* module_list =
973 new (mtModule) GrowableArray<Klass*>(500, mtModule);
974 set_fixup_module_field_list(module_list);
975 }
976
977 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
978 Handle& mirror, Handle& comp_mirror, TRAPS) {
979 // Allocate mirror (java.lang.Class instance)
980 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
981 mirror = Handle(THREAD, mirror_oop);
982
983 // Setup indirection from mirror->klass
984 set_klass(mirror(), k);
985
986 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
987 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
988
989 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
990
991 // It might also have a component mirror. This mirror must already exist.
992 if (k->is_array_klass()) {
993 if (k->is_flatArray_klass()) {
994 Klass* element_klass = (Klass*) FlatArrayKlass::cast(k)->element_klass();
995 assert(element_klass->is_inline_klass(), "Must be inline type component");
996 if (is_scratch) {
997 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
998 } else {
999 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1000 }
1001 } else if (k->is_typeArray_klass()) {
1002 BasicType type = TypeArrayKlass::cast(k)->element_type();
1003 if (is_scratch) {
1004 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1005 } else {
1006 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1007 }
1008 } else {
1009 assert(k->is_objArray_klass(), "Must be");
1010 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1011 assert(element_klass != nullptr, "Must have an element klass");
1012 oop comp_oop = element_klass->java_mirror();
1013 if (element_klass->is_inline_klass()) {
1014 InlineKlass* ik = InlineKlass::cast(element_klass);
1015 comp_oop = ik->java_mirror();
1016 }
1017 if (is_scratch) {
1018 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1019 } else {
1020 comp_mirror = Handle(THREAD, comp_oop);
1021 }
1022 }
1023 assert(comp_mirror() != nullptr, "must have a mirror");
1024
1025 // Two-way link between the array klass and its component mirror:
1026 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1027 set_component_mirror(mirror(), comp_mirror());
1028 // See below for ordering dependencies between field array_klass in component mirror
1029 // and java_mirror in this klass.
1030 } else {
1031 assert(k->is_instance_klass(), "Must be");
1032
1033 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1034 if (HAS_PENDING_EXCEPTION) {
1035 // If any of the fields throws an exception like OOM remove the klass field
1036 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1037 // This mirror looks like a primitive type, which logically it is because it
1038 // it represents no class.
1039 set_klass(mirror(), nullptr);
1040 return;
1041 }
1042 }
1043 }
1044
1045 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1046 Handle module, Handle protection_domain,
1047 Handle classData, TRAPS) {
1048 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1049 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1050
1051 // Use this moment of initialization to cache modifier_flags also,
1052 // to support Class.getModifiers(). Instance classes recalculate
1053 // the cached flags after the class file is parsed, but before the
1054 // class is put into the system dictionary.
1055 int computed_modifiers = k->compute_modifier_flags();
1056 k->set_modifier_flags(computed_modifiers);
1057 // Class_klass has to be loaded because it is used to allocate
1058 // the mirror.
1059 if (vmClasses::Class_klass_loaded()) {
1060 Handle mirror;
1061 Handle comp_mirror;
1062
1063 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1064
1065 // set the classLoader field in the java_lang_Class instance
1066 assert(class_loader() == k->class_loader(), "should be same");
1067 set_class_loader(mirror(), class_loader());
1068
1069 // Setup indirection from klass->mirror
1070 // after any exceptions can happen during allocations.
1071 k->set_java_mirror(mirror);
1072
1073 // Set the module field in the java_lang_Class instance. This must be done
1074 // after the mirror is set.
1075 set_mirror_module_field(THREAD, k, mirror, module);
1076
1077 if (comp_mirror() != nullptr) {
1078 // Set after k->java_mirror() is published, because compiled code running
1079 // concurrently doesn't expect a k to have a null java_mirror.
1080 release_set_array_klass(comp_mirror(), k);
1081 }
1082
1083 if (CDSConfig::is_dumping_heap()) {
1084 create_scratch_mirror(k, CHECK);
1085 }
1086 } else {
1087 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1088 fixup_mirror_list()->push(k);
1089 }
1090 }
1091
1092 #if INCLUDE_CDS_JAVA_HEAP
1093 // The "scratch mirror" stores the states of the mirror object that can be
1094 // decided at dump time (such as the initial values of the static fields, the
1095 // component mirror, etc). At runtime, more information is added to it by
1096 // java_lang_Class::restore_archived_mirror().
1097 //
1098 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1099 // produces the same result as /*runtime*/create_mirror().
1100 //
1101 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1102 // latter may contain dumptime-specific information that cannot be archived
1103 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1104 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1105 // Inline classes encapsulate two mirror objects, a value mirror (primitive value mirror)
1106 // and a reference mirror (primitive class mirror), skip over scratch mirror allocation
1107 // for inline classes, they will not be part of shared archive and will be created while
1108 // restoring unshared fileds. Refer Klass::restore_unshareable_info() for more details.
1109 if (k->is_inline_klass() ||
1110 (k->class_loader() != nullptr &&
1111 k->class_loader() != SystemDictionary::java_platform_loader() &&
1112 k->class_loader() != SystemDictionary::java_system_loader())) {
1113 // We only archive the mirrors of classes loaded by the built-in loaders
1114 return;
1115 }
1116
1117 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1118 Handle mirror;
1119 Handle comp_mirror;
1120 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1121
1122 if (comp_mirror() != nullptr) {
1123 release_set_array_klass(comp_mirror(), k);
1124 }
1125
1126 HeapShared::set_scratch_java_mirror(k, mirror());
1127 }
1128
1129 // Returns true if the mirror is updated, false if no archived mirror
1130 // data is present. After the archived mirror object is restored, the
1131 // shared klass' _has_raw_archived_mirror flag is cleared.
1132 bool java_lang_Class::restore_archived_mirror(Klass *k,
1133 Handle class_loader, Handle module,
1134 Handle protection_domain, TRAPS) {
1135 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1136 // see more details in vmClasses::resolve_all().
1137 if (!vmClasses::Class_klass_loaded()) {
1138 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1139 fixup_mirror_list()->push(k);
1140 return true;
1141 }
1142
1143 oop m = k->archived_java_mirror();
1144 assert(m != nullptr, "must have stored non-null archived mirror");
1145
1146 // Sanity: clear it now to prevent re-initialization if any of the following fails
1147 k->clear_archived_mirror_index();
1148
1149 // mirror is archived, restore
1150 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1151 assert(as_Klass(m) == k, "must be");
1152 Handle mirror(THREAD, m);
1153
1154 if (!k->is_array_klass()) {
1155 // - local static final fields with initial values were initialized at dump time
1156
1157 if (protection_domain.not_null()) {
1158 set_protection_domain(mirror(), protection_domain());
1159 }
1160 }
1161
1162 assert(class_loader() == k->class_loader(), "should be same");
1163 if (class_loader.not_null()) {
1164 set_class_loader(mirror(), class_loader());
1165 }
1166
1167 k->set_java_mirror(mirror);
1168
1169 set_mirror_module_field(THREAD, k, mirror, module);
1170
1171 if (log_is_enabled(Trace, cds, heap, mirror)) {
1172 ResourceMark rm(THREAD);
1173 log_trace(cds, heap, mirror)(
1174 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1175 }
1176
1177 return true;
1178 }
1179 #endif // INCLUDE_CDS_JAVA_HEAP
1180
1181 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1182 assert(_module_offset != 0, "must have been computed already");
1183 set_module(k->java_mirror(), module());
1184 }
1185
1186 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1187 assert(_oop_size_offset != 0, "must be set");
1188 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1189 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1190 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1191 }
1192
1193 int java_lang_Class::static_oop_field_count(oop java_class) {
1194 assert(_static_oop_field_count_offset != 0, "must be set");
1195 return java_class->int_field(_static_oop_field_count_offset);
1196 }
1197
1198 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1199 assert(_static_oop_field_count_offset != 0, "must be set");
1200 java_class->int_field_put(_static_oop_field_count_offset, size);
1201 }
1202
1203 oop java_lang_Class::protection_domain(oop java_class) {
1204 assert(_protection_domain_offset != 0, "must be set");
1205 return java_class->obj_field(_protection_domain_offset);
1206 }
1207 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1208 assert(_protection_domain_offset != 0, "must be set");
1209 java_class->obj_field_put(_protection_domain_offset, pd);
1210 }
1211
1212 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1213 assert(_component_mirror_offset != 0, "must be set");
1214 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1215 }
1216 oop java_lang_Class::component_mirror(oop java_class) {
1217 assert(_component_mirror_offset != 0, "must be set");
1218 return java_class->obj_field(_component_mirror_offset);
1219 }
1220
1221 objArrayOop java_lang_Class::signers(oop java_class) {
1222 assert(_signers_offset != 0, "must be set");
1223 return (objArrayOop)java_class->obj_field(_signers_offset);
1224 }
1225 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1226 assert(_signers_offset != 0, "must be set");
1227 java_class->obj_field_put(_signers_offset, signers);
1228 }
1229
1230 oop java_lang_Class::class_data(oop java_class) {
1231 assert(_classData_offset != 0, "must be set");
1232 return java_class->obj_field(_classData_offset);
1233 }
1234 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1235 assert(_classData_offset != 0, "must be set");
1236 java_class->obj_field_put(_classData_offset, class_data);
1237 }
1238
1239 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1240 assert(_class_loader_offset != 0, "offsets should have been initialized");
1241 java_class->obj_field_put(_class_loader_offset, loader);
1242 }
1243
1244 oop java_lang_Class::class_loader(oop java_class) {
1245 assert(_class_loader_offset != 0, "must be set");
1246 return java_class->obj_field(_class_loader_offset);
1247 }
1248
1249 oop java_lang_Class::module(oop java_class) {
1250 assert(_module_offset != 0, "must be set");
1251 return java_class->obj_field(_module_offset);
1252 }
1253
1254 void java_lang_Class::set_module(oop java_class, oop module) {
1255 assert(_module_offset != 0, "must be set");
1256 java_class->obj_field_put(_module_offset, module);
1257 }
1258
1259 oop java_lang_Class::name(Handle java_class, TRAPS) {
1260 assert(_name_offset != 0, "must be set");
1261 oop o = java_class->obj_field(_name_offset);
1262 if (o == nullptr) {
1263 o = StringTable::intern(as_external_name(java_class()), THREAD);
1264 java_class->obj_field_put(_name_offset, o);
1265 }
1266 return o;
1267 }
1268
1269 oop java_lang_Class::source_file(oop java_class) {
1270 assert(_source_file_offset != 0, "must be set");
1271 return java_class->obj_field(_source_file_offset);
1272 }
1273
1274 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1275 assert(_source_file_offset != 0, "must be set");
1276 java_class->obj_field_put(_source_file_offset, source_file);
1277 }
1278
1279 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1280 // This should be improved by adding a field at the Java level or by
1281 // introducing a new VM klass (see comment in ClassFileParser)
1282 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1283 if (type != T_VOID) {
1284 Klass* aklass = Universe::typeArrayKlassObj(type);
1285 assert(aklass != nullptr, "correct bootstrap");
1286 release_set_array_klass(java_class, aklass);
1287 }
1288 #ifdef ASSERT
1289 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1290 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1291 #endif
1292 return java_class;
1293 }
1294
1295 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1296 assert(is_instance(java_class), "must be a Class object");
1297 java_class->metadata_field_put(_klass_offset, klass);
1298 }
1299
1300
1301 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1302 assert(is_instance(java_class), "must be a Class object");
1303 Symbol* name = nullptr;
1304 bool is_instance = false;
1305 if (is_primitive(java_class)) {
1306 name = vmSymbols::type_signature(primitive_type(java_class));
1307 } else {
1308 Klass* k = as_Klass(java_class);
1309 is_instance = k->is_instance_klass();
1310 name = k->name();
1311 }
1312 if (name == nullptr) {
1313 st->print("<null>");
1314 return;
1315 }
1316 if (is_instance) {
1317 st->print("L");
1318 }
1319 st->write((char*) name->base(), (int) name->utf8_length());
1320 if (is_instance) st->print(";");
1321 }
1322
1323 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1324 assert(is_instance(java_class), "must be a Class object");
1325 Symbol* name;
1326 if (is_primitive(java_class)) {
1327 name = vmSymbols::type_signature(primitive_type(java_class));
1328 // Because this can create a new symbol, the caller has to decrement
1329 // the refcount, so make adjustment here and below for symbols returned
1330 // that are not created or incremented due to a successful lookup.
1331 name->increment_refcount();
1332 } else {
1333 Klass* k = as_Klass(java_class);
1334 if (!k->is_instance_klass()) {
1335 name = k->name();
1336 name->increment_refcount();
1337 } else {
1338 ResourceMark rm;
1339 const char* sigstr = k->signature_name();
1340 int siglen = (int) strlen(sigstr);
1341 if (!intern_if_not_found) {
1342 name = SymbolTable::probe(sigstr, siglen);
1343 } else {
1344 name = SymbolTable::new_symbol(sigstr, siglen);
1345 }
1346 }
1347 }
1348 return name;
1349 }
1350
1351 // Returns the Java name for this Java mirror (Resource allocated)
1352 // See Klass::external_name().
1353 // For primitive type Java mirrors, its type name is returned.
1354 const char* java_lang_Class::as_external_name(oop java_class) {
1355 assert(is_instance(java_class), "must be a Class object");
1356 const char* name = nullptr;
1357 if (is_primitive(java_class)) {
1358 name = type2name(primitive_type(java_class));
1359 } else {
1360 name = as_Klass(java_class)->external_name();
1361 }
1362 if (name == nullptr) {
1363 name = "<null>";
1364 }
1365 return name;
1366 }
1367
1368 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1369 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1370 assert(k == nullptr || k->is_klass() && k->is_array_klass(), "should be array klass");
1371 return k;
1372 }
1373
1374
1375 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1376 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1377 if (klass->is_flatArray_klass() || (klass->is_objArray_klass() && ObjArrayKlass::cast(klass)->is_null_free_array_klass())) {
1378 // TODO 8325106 Ignore flat / null-free arrays
1379 return;
1380 }
1381 java_class->release_metadata_field_put(_array_klass_offset, klass);
1382 }
1383
1384
1385 BasicType java_lang_Class::primitive_type(oop java_class) {
1386 assert(is_primitive(java_class), "just checking");
1387 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1388 BasicType type = T_VOID;
1389 if (ak != nullptr) {
1390 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1391 type = ArrayKlass::cast(ak)->element_type();
1392 } else {
1393 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1394 }
1395 #ifdef ASSERT
1396 if (CDSConfig::is_dumping_heap()) {
1397 oop mirror = Universe::java_mirror(type);
1398 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1399 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1400 } else {
1401 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1402 }
1403 #endif
1404 return type;
1405 }
1406
1407 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1408 assert(is_instance(java_class), "must be a Class object");
1409 if (is_primitive(java_class)) {
1410 if (reference_klass != nullptr)
1411 (*reference_klass) = nullptr;
1412 return primitive_type(java_class);
1413 } else {
1414 if (reference_klass != nullptr)
1415 (*reference_klass) = as_Klass(java_class);
1416 return T_OBJECT;
1417 }
1418 }
1419
1420
1421 oop java_lang_Class::primitive_mirror(BasicType t) {
1422 oop mirror = Universe::java_mirror(t);
1423 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1424 assert(is_primitive(mirror), "must be primitive");
1425 return mirror;
1426 }
1427
1428 #define CLASS_FIELDS_DO(macro) \
1429 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1430 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1431 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1432 macro(_module_offset, k, "module", module_signature, false); \
1433 macro(_name_offset, k, "name", string_signature, false); \
1434 macro(_classData_offset, k, "classData", object_signature, false);
1435
1436 void java_lang_Class::compute_offsets() {
1437 if (_offsets_computed) {
1438 return;
1439 }
1440
1441 _offsets_computed = true;
1442
1443 InstanceKlass* k = vmClasses::Class_klass();
1444 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1445
1446 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1447 }
1448
1449 #if INCLUDE_CDS
1450 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1451 f->do_bool(&_offsets_computed);
1452
1453 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1454
1455 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1456 }
1457 #endif
1458
1459 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1460 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1461 return the_class_mirror->int_field(_classRedefinedCount_offset);
1462 }
1463
1464 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1465 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1466 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1467 }
1468
1469
1470 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1471 // platform thread structure, and a eetop offset which was used for thread
1472 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1473 // merged, so in the HotSpot VM we just use the eetop field for the thread
1474 // instead of the privateInfo_offset.
1475 //
1476 // Note: The stackSize field is only present starting in 1.4.
1477
1478 int java_lang_Thread_FieldHolder::_group_offset;
1479 int java_lang_Thread_FieldHolder::_priority_offset;
1480 int java_lang_Thread_FieldHolder::_stackSize_offset;
1481 int java_lang_Thread_FieldHolder::_daemon_offset;
1482 int java_lang_Thread_FieldHolder::_thread_status_offset;
1483
1484 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1485 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1486 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1487 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1488 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1489 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1490
1491 void java_lang_Thread_FieldHolder::compute_offsets() {
1492 assert(_group_offset == 0, "offsets should be initialized only once");
1493
1494 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1495 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1496 }
1497
1498 #if INCLUDE_CDS
1499 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1500 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1501 }
1502 #endif
1503
1504 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1505 return holder->obj_field(_group_offset);
1506 }
1507
1508 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1509 return (ThreadPriority)holder->int_field(_priority_offset);
1510 }
1511
1512 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1513 holder->int_field_put(_priority_offset, priority);
1514 }
1515
1516 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1517 return holder->long_field(_stackSize_offset);
1518 }
1519
1520 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1521 return holder->bool_field(_daemon_offset) != 0;
1522 }
1523
1524 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1525 assert(val, "daemon status is never turned off");
1526 holder->bool_field_put(_daemon_offset, val);
1527 }
1528
1529 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1530 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1531 }
1532
1533 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1534 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1535 }
1536
1537
1538 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1539
1540 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1541 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1542
1543 void java_lang_Thread_Constants::compute_offsets() {
1544 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1545
1546 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1547 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1548 }
1549
1550 #if INCLUDE_CDS
1551 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1552 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1553 }
1554 #endif
1555
1556 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1557 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1558 oop base = k->static_field_base_raw();
1559 return base->obj_field(_static_VTHREAD_GROUP_offset);
1560 }
1561
1562
1563 int java_lang_Thread::_holder_offset;
1564 int java_lang_Thread::_name_offset;
1565 int java_lang_Thread::_contextClassLoader_offset;
1566 int java_lang_Thread::_inheritedAccessControlContext_offset;
1567 int java_lang_Thread::_eetop_offset;
1568 int java_lang_Thread::_jvmti_thread_state_offset;
1569 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1570 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1571 int java_lang_Thread::_interrupted_offset;
1572 int java_lang_Thread::_tid_offset;
1573 int java_lang_Thread::_continuation_offset;
1574 int java_lang_Thread::_park_blocker_offset;
1575 int java_lang_Thread::_scopedValueBindings_offset;
1576 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1577
1578 #define THREAD_FIELDS_DO(macro) \
1579 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1580 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1581 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1582 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1583 macro(_eetop_offset, k, "eetop", long_signature, false); \
1584 macro(_interrupted_offset, k, "interrupted", bool_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
1668 bool java_lang_Thread::interrupted(oop java_thread) {
1669 // Make sure the caller can safely access oops.
1670 assert(Thread::current()->is_VM_thread() ||
1671 (JavaThread::current()->thread_state() != _thread_blocked &&
1672 JavaThread::current()->thread_state() != _thread_in_native),
1673 "Unsafe access to oop");
1674 return java_thread->bool_field_volatile(_interrupted_offset);
1675 }
1676
1677 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1678 // Make sure the caller can safely access oops.
1679 assert(Thread::current()->is_VM_thread() ||
1680 (JavaThread::current()->thread_state() != _thread_blocked &&
1681 JavaThread::current()->thread_state() != _thread_in_native),
1682 "Unsafe access to oop");
1683 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1684 }
1685
1686
1687 oop java_lang_Thread::name(oop java_thread) {
1688 return java_thread->obj_field(_name_offset);
1689 }
1690
1691
1692 void java_lang_Thread::set_name(oop java_thread, oop name) {
1693 java_thread->obj_field_put(_name_offset, name);
1694 }
1695
1696 // Convenience macros for setting and getting Thread fields that
1697 // are actually stored in the FieldHolder object of the thread.
1698 // The FieldHolder can be null whilst a thread is attaching via
1699 // JNI, and when the main thread is attaching.
1700
1701 // The default value should be the default/zero initialized value
1702 // of the field as it would be in java.lang.Thread.FieldHolder.
1703 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1704 { \
1705 oop holder = java_lang_Thread::holder(java_thread); \
1706 if (holder != nullptr) \
1707 return java_lang_Thread_FieldHolder::field(holder); \
1708 else \
1709 return default_val; \
1710 }
1711
1712 // We should never be trying to set a field of an attaching thread.
1713 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1714 { \
1715 oop holder = java_lang_Thread::holder(java_thread); \
1716 assert(holder != nullptr, "Thread not fully initialized"); \
1717 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1718 }
1719
1720
1721 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1722 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1723 }
1724
1725
1726 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1727 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1728 }
1729
1730
1731 oop java_lang_Thread::threadGroup(oop java_thread) {
1732 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1733 }
1734
1735
1736 bool java_lang_Thread::is_alive(oop java_thread) {
1737 JavaThread* thr = java_lang_Thread::thread(java_thread);
1738 return (thr != nullptr);
1739 }
1740
1741
1742 bool java_lang_Thread::is_daemon(oop java_thread) {
1743 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1744 }
1745
1746
1747 void java_lang_Thread::set_daemon(oop java_thread) {
1748 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1749 }
1750
1751 oop java_lang_Thread::context_class_loader(oop java_thread) {
1752 return java_thread->obj_field(_contextClassLoader_offset);
1753 }
1754
1755 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1756 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1757 }
1758
1759
1760 jlong java_lang_Thread::stackSize(oop java_thread) {
1761 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1762 }
1763
1764 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1765 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1766 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1767 }
1768
1769 // Read thread status value from threadStatus field in java.lang.Thread java class.
1770 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1771 // Make sure the caller is operating on behalf of the VM or is
1772 // running VM code (state == _thread_in_vm).
1773 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1774 JavaThread::current()->thread_state() == _thread_in_vm,
1775 "Java Thread is not running in vm");
1776 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1777 }
1778
1779 ByteSize java_lang_Thread::thread_id_offset() {
1780 return in_ByteSize(_tid_offset);
1781 }
1782
1783 oop java_lang_Thread::park_blocker(oop java_thread) {
1784 return java_thread->obj_field(_park_blocker_offset);
1785 }
1786
1787 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1788 ThreadsListHandle tlh(JavaThread::current());
1789 JavaThread* thread;
1790 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1791 if (is_virtual) {
1792 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1793 if (carrier_thread == nullptr) {
1794 return nullptr;
1795 }
1796 thread = java_lang_Thread::thread(carrier_thread);
1797 } else {
1798 thread = java_lang_Thread::thread(java_thread);
1799 }
1800 if (thread == nullptr) {
1801 return nullptr;
1802 }
1803
1804 class GetStackTraceClosure : public HandshakeClosure {
1805 public:
1806 const Handle _java_thread;
1807 int _depth;
1808 bool _retry_handshake;
1809 GrowableArray<Method*>* _methods;
1810 GrowableArray<int>* _bcis;
1811
1812 GetStackTraceClosure(Handle java_thread) :
1813 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1814 _methods(nullptr), _bcis(nullptr) {
1815 }
1816 ~GetStackTraceClosure() {
1817 delete _methods;
1818 delete _bcis;
1819 }
1820
1821 bool read_reset_retry() {
1822 bool ret = _retry_handshake;
1823 // If we re-execute the handshake this method need to return false
1824 // when the handshake cannot be performed. (E.g. thread terminating)
1825 _retry_handshake = false;
1826 return ret;
1827 }
1828
1829 void do_thread(Thread* th) {
1830 if (!Thread::current()->is_Java_thread()) {
1831 _retry_handshake = true;
1832 return;
1833 }
1834
1835 JavaThread* thread = JavaThread::cast(th);
1836
1837 if (!thread->has_last_Java_frame()) {
1838 return;
1839 }
1840
1841 bool carrier = false;
1842 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1843 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1844 const ContinuationEntry* ce = thread->vthread_continuation();
1845 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1846 return; // not mounted
1847 }
1848 } else {
1849 carrier = (thread->vthread_continuation() != nullptr);
1850 }
1851
1852 const int max_depth = MaxJavaStackTraceDepth;
1853 const bool skip_hidden = !ShowHiddenFrames;
1854
1855 // Pick minimum length that will cover most cases
1856 int init_length = 64;
1857 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1858 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1859
1860 int total_count = 0;
1861 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1862 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1863 vfst.next()) {
1864
1865 if (skip_hidden && (vfst.method()->is_hidden() ||
1866 vfst.method()->is_continuation_enter_intrinsic())) {
1867 continue;
1868 }
1869
1870 _methods->push(vfst.method());
1871 _bcis->push(vfst.bci());
1872 total_count++;
1873 }
1874
1875 _depth = total_count;
1876 }
1877 };
1878
1879 // Handshake with target
1880 ResourceMark rm(THREAD);
1881 HandleMark hm(THREAD);
1882 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1883 do {
1884 Handshake::execute(&gstc, &tlh, thread);
1885 } while (gstc.read_reset_retry());
1886
1887 // Stop if no stack trace is found.
1888 if (gstc._depth == 0) {
1889 return nullptr;
1890 }
1891
1892 // Convert to StackTraceElement array
1893 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1894 assert(k != nullptr, "must be loaded in 1.4+");
1895 if (k->should_be_initialized()) {
1896 k->initialize(CHECK_NULL);
1897 }
1898 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1899
1900 for (int i = 0; i < gstc._depth; i++) {
1901 methodHandle method(THREAD, gstc._methods->at(i));
1902 oop element = java_lang_StackTraceElement::create(method,
1903 gstc._bcis->at(i),
1904 CHECK_NULL);
1905 trace->obj_at_put(i, element);
1906 }
1907
1908 return trace();
1909 }
1910
1911 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1912 JavaThreadStatus status = get_thread_status(java_thread);
1913 switch (status) {
1914 case JavaThreadStatus::NEW : return "NEW";
1915 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1916 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1917 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1918 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1919 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1920 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1921 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1922 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1923 default : return "UNKNOWN";
1924 };
1925 }
1926 int java_lang_ThreadGroup::_parent_offset;
1927 int java_lang_ThreadGroup::_name_offset;
1928 int java_lang_ThreadGroup::_maxPriority_offset;
1929 int java_lang_ThreadGroup::_daemon_offset;
1930
1931 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1932 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1933 return java_thread_group->obj_field(_parent_offset);
1934 }
1935
1936 // ("name as oop" accessor is not necessary)
1937
1938 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1939 oop name = java_thread_group->obj_field(_name_offset);
1940 // ThreadGroup.name can be null
1941 if (name != nullptr) {
1942 return java_lang_String::as_utf8_string(name);
1943 }
1944 return nullptr;
1945 }
1946
1947 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1948 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1949 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1950 }
1951
1952 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1953 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1954 return java_thread_group->bool_field(_daemon_offset) != 0;
1955 }
1956
1957 #define THREADGROUP_FIELDS_DO(macro) \
1958 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1959 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1960 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1961 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
1962
1963 void java_lang_ThreadGroup::compute_offsets() {
1964 assert(_parent_offset == 0, "offsets should be initialized only once");
1965
1966 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1967 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1968 }
1969
1970 #if INCLUDE_CDS
1971 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1972 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1973 }
1974 #endif
1975
1976
1977 // java_lang_VirtualThread
1978
1979 int java_lang_VirtualThread::static_vthread_scope_offset;
1980 int java_lang_VirtualThread::_carrierThread_offset;
1981 int java_lang_VirtualThread::_continuation_offset;
1982 int java_lang_VirtualThread::_state_offset;
1983
1984 #define VTHREAD_FIELDS_DO(macro) \
1985 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
1986 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
1987 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1988 macro(_state_offset, k, "state", int_signature, false)
1989
1990
1991 void java_lang_VirtualThread::compute_offsets() {
1992 InstanceKlass* k = vmClasses::VirtualThread_klass();
1993 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1994 }
1995
1996 bool java_lang_VirtualThread::is_instance(oop obj) {
1997 return obj != nullptr && is_subclass(obj->klass());
1998 }
1999
2000 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2001 oop thread = vthread->obj_field(_carrierThread_offset);
2002 return thread;
2003 }
2004
2005 oop java_lang_VirtualThread::continuation(oop vthread) {
2006 oop cont = vthread->obj_field(_continuation_offset);
2007 return cont;
2008 }
2009
2010 int java_lang_VirtualThread::state(oop vthread) {
2011 return vthread->int_field_acquire(_state_offset);
2012 }
2013
2014 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2015 JavaThreadStatus status = JavaThreadStatus::NEW;
2016 switch (state & ~SUSPENDED) {
2017 case NEW:
2018 status = JavaThreadStatus::NEW;
2019 break;
2020 case STARTED:
2021 case RUNNING:
2022 case PARKING:
2023 case TIMED_PARKING:
2024 case UNPARKED:
2025 case YIELDING:
2026 case YIELDED:
2027 status = JavaThreadStatus::RUNNABLE;
2028 break;
2029 case PARKED:
2030 case PINNED:
2031 status = JavaThreadStatus::PARKED;
2032 break;
2033 case TIMED_PARKED:
2034 case TIMED_PINNED:
2035 status = JavaThreadStatus::PARKED_TIMED;
2036 break;
2037 case TERMINATED:
2038 status = JavaThreadStatus::TERMINATED;
2039 break;
2040 default:
2041 ShouldNotReachHere();
2042 }
2043 return status;
2044 }
2045
2046 #if INCLUDE_CDS
2047 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2048 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2049 }
2050 #endif
2051
2052 // java_lang_Throwable
2053
2054 int java_lang_Throwable::_backtrace_offset;
2055 int java_lang_Throwable::_detailMessage_offset;
2056 int java_lang_Throwable::_stackTrace_offset;
2057 int java_lang_Throwable::_depth_offset;
2058 int java_lang_Throwable::_cause_offset;
2059 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2060
2061 #define THROWABLE_FIELDS_DO(macro) \
2062 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2063 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2064 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2065 macro(_depth_offset, k, "depth", int_signature, false); \
2066 macro(_cause_offset, k, "cause", throwable_signature, false); \
2067 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2068
2069 void java_lang_Throwable::compute_offsets() {
2070 InstanceKlass* k = vmClasses::Throwable_klass();
2071 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2072 }
2073
2074 #if INCLUDE_CDS
2075 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2076 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2077 }
2078 #endif
2079
2080 oop java_lang_Throwable::unassigned_stacktrace() {
2081 InstanceKlass* ik = vmClasses::Throwable_klass();
2082 oop base = ik->static_field_base_raw();
2083 return base->obj_field(_static_unassigned_stacktrace_offset);
2084 }
2085
2086 oop java_lang_Throwable::backtrace(oop throwable) {
2087 return throwable->obj_field_acquire(_backtrace_offset);
2088 }
2089
2090
2091 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2092 throwable->release_obj_field_put(_backtrace_offset, value);
2093 }
2094
2095 int java_lang_Throwable::depth(oop throwable) {
2096 return throwable->int_field(_depth_offset);
2097 }
2098
2099 void java_lang_Throwable::set_depth(oop throwable, int value) {
2100 throwable->int_field_put(_depth_offset, value);
2101 }
2102
2103 oop java_lang_Throwable::message(oop throwable) {
2104 return throwable->obj_field(_detailMessage_offset);
2105 }
2106
2107 oop java_lang_Throwable::cause(oop throwable) {
2108 return throwable->obj_field(_cause_offset);
2109 }
2110
2111 // Return Symbol for detailed_message or null
2112 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2113 PreserveExceptionMark pm(Thread::current());
2114 oop detailed_message = java_lang_Throwable::message(throwable);
2115 if (detailed_message != nullptr) {
2116 return java_lang_String::as_symbol(detailed_message);
2117 }
2118 return nullptr;
2119 }
2120
2121 void java_lang_Throwable::set_message(oop throwable, oop value) {
2122 throwable->obj_field_put(_detailMessage_offset, value);
2123 }
2124
2125
2126 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2127 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2128 }
2129
2130 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2131 set_stacktrace(throwable, nullptr);
2132 }
2133
2134
2135 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2136 ResourceMark rm;
2137 Klass* k = throwable->klass();
2138 assert(k != nullptr, "just checking");
2139 st->print("%s", k->external_name());
2140 oop msg = message(throwable);
2141 if (msg != nullptr) {
2142 st->print(": %s", java_lang_String::as_utf8_string(msg));
2143 }
2144 }
2145
2146 // After this many redefines, the stack trace is unreliable.
2147 const int MAX_VERSION = USHRT_MAX;
2148
2149 static inline bool version_matches(Method* method, int version) {
2150 assert(version < MAX_VERSION, "version is too big");
2151 return method != nullptr && (method->constants()->version() == version);
2152 }
2153
2154 // This class provides a simple wrapper over the internal structure of
2155 // exception backtrace to insulate users of the backtrace from needing
2156 // to know what it looks like.
2157 // The code of this class is not GC safe. Allocations can only happen
2158 // in expand().
2159 class BacktraceBuilder: public StackObj {
2160 friend class BacktraceIterator;
2161 private:
2162 Handle _backtrace;
2163 objArrayOop _head;
2164 typeArrayOop _methods;
2165 typeArrayOop _bcis;
2166 objArrayOop _mirrors;
2167 typeArrayOop _names; // Needed to insulate method name against redefinition.
2168 // True if the top frame of the backtrace is omitted because it shall be hidden.
2169 bool _has_hidden_top_frame;
2170 int _index;
2171 NoSafepointVerifier _nsv;
2172
2173 enum {
2174 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2175 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2176 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2177 trace_names_offset = java_lang_Throwable::trace_names_offset,
2178 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2179 trace_next_offset = java_lang_Throwable::trace_next_offset,
2180 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2181 trace_size = java_lang_Throwable::trace_size,
2182 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2183 };
2184
2185 // get info out of chunks
2186 static typeArrayOop get_methods(objArrayHandle chunk) {
2187 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2188 assert(methods != nullptr, "method array should be initialized in backtrace");
2189 return methods;
2190 }
2191 static typeArrayOop get_bcis(objArrayHandle chunk) {
2192 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2193 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2194 return bcis;
2195 }
2196 static objArrayOop get_mirrors(objArrayHandle chunk) {
2197 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2198 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2199 return mirrors;
2200 }
2201 static typeArrayOop get_names(objArrayHandle chunk) {
2202 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2203 assert(names != nullptr, "names array should be initialized in backtrace");
2204 return names;
2205 }
2206 static bool has_hidden_top_frame(objArrayHandle chunk) {
2207 oop hidden = chunk->obj_at(trace_hidden_offset);
2208 return hidden != nullptr;
2209 }
2210
2211 public:
2212
2213 // constructor for new backtrace
2214 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2215 expand(CHECK);
2216 _backtrace = Handle(THREAD, _head);
2217 _index = 0;
2218 }
2219
2220 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2221 _methods = get_methods(backtrace);
2222 _bcis = get_bcis(backtrace);
2223 _mirrors = get_mirrors(backtrace);
2224 _names = get_names(backtrace);
2225 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2226 assert(_methods->length() == _bcis->length() &&
2227 _methods->length() == _mirrors->length() &&
2228 _mirrors->length() == _names->length(),
2229 "method and source information arrays should match");
2230
2231 // head is the preallocated backtrace
2232 _head = backtrace();
2233 _backtrace = Handle(thread, _head);
2234 _index = 0;
2235 }
2236
2237 void expand(TRAPS) {
2238 objArrayHandle old_head(THREAD, _head);
2239 PauseNoSafepointVerifier pnsv(&_nsv);
2240
2241 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2242 objArrayHandle new_head(THREAD, head);
2243
2244 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2245 typeArrayHandle new_methods(THREAD, methods);
2246
2247 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2248 typeArrayHandle new_bcis(THREAD, bcis);
2249
2250 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2251 objArrayHandle new_mirrors(THREAD, mirrors);
2252
2253 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2254 typeArrayHandle new_names(THREAD, names);
2255
2256 if (!old_head.is_null()) {
2257 old_head->obj_at_put(trace_next_offset, new_head());
2258 }
2259 new_head->obj_at_put(trace_methods_offset, new_methods());
2260 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2261 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2262 new_head->obj_at_put(trace_names_offset, new_names());
2263 new_head->obj_at_put(trace_hidden_offset, nullptr);
2264
2265 _head = new_head();
2266 _methods = new_methods();
2267 _bcis = new_bcis();
2268 _mirrors = new_mirrors();
2269 _names = new_names();
2270 _index = 0;
2271 }
2272
2273 oop backtrace() {
2274 return _backtrace();
2275 }
2276
2277 inline void push(Method* method, int bci, TRAPS) {
2278 // Smear the -1 bci to 0 since the array only holds unsigned
2279 // shorts. The later line number lookup would just smear the -1
2280 // to a 0 even if it could be recorded.
2281 if (bci == SynchronizationEntryBCI) bci = 0;
2282
2283 if (_index >= trace_chunk_size) {
2284 methodHandle mhandle(THREAD, method);
2285 expand(CHECK);
2286 method = mhandle();
2287 }
2288
2289 _methods->ushort_at_put(_index, method->orig_method_idnum());
2290 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2291
2292 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2293 // klass owning the symbols alive so their refcounts aren't decremented.
2294 Symbol* name = method->name();
2295 _names->symbol_at_put(_index, name);
2296
2297 // We need to save the mirrors in the backtrace to keep the class
2298 // from being unloaded while we still have this stack trace.
2299 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2300 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2301
2302 _index++;
2303 }
2304
2305 void set_has_hidden_top_frame() {
2306 if (!_has_hidden_top_frame) {
2307 // It would be nice to add java/lang/Boolean::TRUE here
2308 // to indicate that this backtrace has a hidden top frame.
2309 // But this code is used before TRUE is allocated.
2310 // Therefore let's just use an arbitrary legal oop
2311 // available right here. _methods is a short[].
2312 assert(_methods != nullptr, "we need a legal oop");
2313 _has_hidden_top_frame = true;
2314 _head->obj_at_put(trace_hidden_offset, _methods);
2315 }
2316 }
2317 };
2318
2319 struct BacktraceElement : public StackObj {
2320 int _method_id;
2321 int _bci;
2322 int _version;
2323 Symbol* _name;
2324 Handle _mirror;
2325 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2326 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2327 };
2328
2329 class BacktraceIterator : public StackObj {
2330 int _index;
2331 objArrayHandle _result;
2332 objArrayHandle _mirrors;
2333 typeArrayHandle _methods;
2334 typeArrayHandle _bcis;
2335 typeArrayHandle _names;
2336
2337 void init(objArrayHandle result, Thread* thread) {
2338 // Get method id, bci, version and mirror from chunk
2339 _result = result;
2340 if (_result.not_null()) {
2341 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2342 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2343 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2344 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2345 _index = 0;
2346 }
2347 }
2348 public:
2349 BacktraceIterator(objArrayHandle result, Thread* thread) {
2350 init(result, thread);
2351 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2352 }
2353
2354 BacktraceElement next(Thread* thread) {
2355 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2356 _methods->ushort_at(_index),
2357 Backtrace::version_at(_bcis->int_at(_index)),
2358 Backtrace::bci_at(_bcis->int_at(_index)),
2359 _names->symbol_at(_index));
2360 _index++;
2361
2362 if (_index >= java_lang_Throwable::trace_chunk_size) {
2363 int next_offset = java_lang_Throwable::trace_next_offset;
2364 // Get next chunk
2365 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2366 init(result, thread);
2367 }
2368 return e;
2369 }
2370
2371 bool repeat() {
2372 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2373 }
2374 };
2375
2376
2377 // Print stack trace element to resource allocated buffer
2378 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2379 int version, int bci, Symbol* name) {
2380 ResourceMark rm;
2381
2382 // Get strings and string lengths
2383 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2384 const char* klass_name = holder->external_name();
2385 int buf_len = (int)strlen(klass_name);
2386
2387 char* method_name = name->as_C_string();
2388 buf_len += (int)strlen(method_name);
2389
2390 char* source_file_name = nullptr;
2391 Symbol* source = Backtrace::get_source_file_name(holder, version);
2392 if (source != nullptr) {
2393 source_file_name = source->as_C_string();
2394 buf_len += (int)strlen(source_file_name);
2395 }
2396
2397 char *module_name = nullptr, *module_version = nullptr;
2398 ModuleEntry* module = holder->module();
2399 if (module->is_named()) {
2400 module_name = module->name()->as_C_string();
2401 buf_len += (int)strlen(module_name);
2402 if (module->version() != nullptr) {
2403 module_version = module->version()->as_C_string();
2404 buf_len += (int)strlen(module_version);
2405 }
2406 }
2407
2408 // Allocate temporary buffer with extra space for formatting and line number
2409 const size_t buf_size = buf_len + 64;
2410 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2411
2412 // Print stack trace line in buffer
2413 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2414
2415 // Print module information
2416 if (module_name != nullptr) {
2417 if (module_version != nullptr) {
2418 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2419 } else {
2420 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2421 }
2422 }
2423
2424 // The method can be null if the requested class version is gone
2425 Method* method = holder->method_with_orig_idnum(method_id, version);
2426 if (!version_matches(method, version)) {
2427 strcat(buf, "Redefined)");
2428 } else {
2429 int line_number = Backtrace::get_line_number(method, bci);
2430 if (line_number == -2) {
2431 strcat(buf, "Native Method)");
2432 } else {
2433 if (source_file_name != nullptr && (line_number != -1)) {
2434 // Sourcename and linenumber
2435 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2436 } else if (source_file_name != nullptr) {
2437 // Just sourcename
2438 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2439 } else {
2440 // Neither sourcename nor linenumber
2441 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2442 }
2443 CompiledMethod* nm = method->code();
2444 if (WizardMode && nm != nullptr) {
2445 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2446 }
2447 }
2448 }
2449
2450 st->print_cr("%s", buf);
2451 }
2452
2453 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2454 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2455 int method_id = method->orig_method_idnum();
2456 int version = method->constants()->version();
2457 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2458 }
2459
2460 /**
2461 * Print the throwable message and its stack trace plus all causes by walking the
2462 * cause chain. The output looks the same as of Throwable.printStackTrace().
2463 */
2464 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2465 // First, print the message.
2466 print(throwable(), st);
2467 st->cr();
2468
2469 // Now print the stack trace.
2470 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2471 while (throwable.not_null()) {
2472 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2473 if (result.is_null()) {
2474 st->print_raw_cr("\t<<no stack trace available>>");
2475 return;
2476 }
2477 BacktraceIterator iter(result, THREAD);
2478
2479 while (iter.repeat()) {
2480 BacktraceElement bte = iter.next(THREAD);
2481 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2482 }
2483 if (THREAD->can_call_java()) {
2484 // Call getCause() which doesn't necessarily return the _cause field.
2485 ExceptionMark em(THREAD);
2486 JavaValue cause(T_OBJECT);
2487 JavaCalls::call_virtual(&cause,
2488 throwable,
2489 throwable->klass(),
2490 vmSymbols::getCause_name(),
2491 vmSymbols::void_throwable_signature(),
2492 THREAD);
2493 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2494 if (HAS_PENDING_EXCEPTION) {
2495 CLEAR_PENDING_EXCEPTION;
2496 throwable = Handle();
2497 } else {
2498 throwable = Handle(THREAD, cause.get_oop());
2499 if (throwable.not_null()) {
2500 st->print("Caused by: ");
2501 print(throwable(), st);
2502 st->cr();
2503 }
2504 }
2505 } else {
2506 st->print_raw_cr("<<cannot call Java to get cause>>");
2507 return;
2508 }
2509 }
2510 }
2511
2512 /**
2513 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2514 */
2515 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2516 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2517 JavaValue result(T_VOID);
2518 JavaCalls::call_virtual(&result,
2519 throwable,
2520 vmClasses::Throwable_klass(),
2521 vmSymbols::printStackTrace_name(),
2522 vmSymbols::void_method_signature(),
2523 THREAD);
2524 }
2525
2526 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2527 if (!StackTraceInThrowable) return;
2528 ResourceMark rm(THREAD);
2529
2530 // Start out by clearing the backtrace for this object, in case the VM
2531 // runs out of memory while allocating the stack trace
2532 set_backtrace(throwable(), nullptr);
2533 // Clear lazily constructed Java level stacktrace if refilling occurs
2534 // This is unnecessary in 1.7+ but harmless
2535 clear_stacktrace(throwable());
2536
2537 int max_depth = MaxJavaStackTraceDepth;
2538 JavaThread* thread = THREAD;
2539
2540 BacktraceBuilder bt(CHECK);
2541
2542 // If there is no Java frame just return the method that was being called
2543 // with bci 0
2544 if (!thread->has_last_Java_frame()) {
2545 if (max_depth >= 1 && method() != nullptr) {
2546 bt.push(method(), 0, CHECK);
2547 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2548 set_depth(throwable(), 1);
2549 set_backtrace(throwable(), bt.backtrace());
2550 }
2551 return;
2552 }
2553
2554 // Instead of using vframe directly, this version of fill_in_stack_trace
2555 // basically handles everything by hand. This significantly improved the
2556 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2557 // See bug 6333838 for more details.
2558 // The "ASSERT" here is to verify this method generates the exactly same stack
2559 // trace as utilizing vframe.
2560 #ifdef ASSERT
2561 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2562 #endif
2563 int total_count = 0;
2564 RegisterMap map(thread,
2565 RegisterMap::UpdateMap::skip,
2566 RegisterMap::ProcessFrames::skip,
2567 RegisterMap::WalkContinuation::include);
2568 int decode_offset = 0;
2569 CompiledMethod* nm = nullptr;
2570 bool skip_fillInStackTrace_check = false;
2571 bool skip_throwableInit_check = false;
2572 bool skip_hidden = !ShowHiddenFrames;
2573 bool show_carrier = ShowCarrierFrames;
2574 ContinuationEntry* cont_entry = thread->last_continuation();
2575 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2576 Method* method = nullptr;
2577 int bci = 0;
2578
2579 // Compiled java method case.
2580 if (decode_offset != 0) {
2581 DebugInfoReadStream stream(nm, decode_offset);
2582 decode_offset = stream.read_int();
2583 method = (Method*)nm->metadata_at(stream.read_int());
2584 bci = stream.read_bci();
2585 } else {
2586 if (fr.is_first_frame()) break;
2587
2588 if (Continuation::is_continuation_enterSpecial(fr)) {
2589 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2590 if (!show_carrier && cont_entry->is_virtual_thread()) {
2591 break;
2592 }
2593 cont_entry = cont_entry->parent();
2594 }
2595
2596 address pc = fr.pc();
2597 if (fr.is_interpreted_frame()) {
2598 address bcp;
2599 if (!map.in_cont()) {
2600 bcp = fr.interpreter_frame_bcp();
2601 method = fr.interpreter_frame_method();
2602 } else {
2603 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2604 method = map.stack_chunk()->interpreter_frame_method(fr);
2605 }
2606 bci = method->bci_from(bcp);
2607 fr = fr.sender(&map);
2608 } else {
2609 CodeBlob* cb = fr.cb();
2610 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2611 // but non nmethod
2612 fr = fr.sender(&map);
2613 if (cb == nullptr || !cb->is_compiled()) {
2614 continue;
2615 }
2616 nm = cb->as_compiled_method();
2617 assert(nm->method() != nullptr, "must be");
2618 if (nm->method()->is_native()) {
2619 method = nm->method();
2620 bci = 0;
2621 } else {
2622 PcDesc* pd = nm->pc_desc_at(pc);
2623 decode_offset = pd->scope_decode_offset();
2624 // if decode_offset is not equal to 0, it will execute the
2625 // "compiled java method case" at the beginning of the loop.
2626 continue;
2627 }
2628 }
2629 }
2630 #ifdef ASSERT
2631 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2632 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2633 st.next();
2634 }
2635 #endif
2636
2637 // the format of the stacktrace will be:
2638 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2639 // - 0 or more <init> methods for the exception class (skipped)
2640 // - rest of the stack
2641
2642 if (!skip_fillInStackTrace_check) {
2643 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2644 throwable->is_a(method->method_holder())) {
2645 continue;
2646 }
2647 else {
2648 skip_fillInStackTrace_check = true; // gone past them all
2649 }
2650 }
2651 if (!skip_throwableInit_check) {
2652 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2653
2654 // skip <init> methods of the exception class and superclasses
2655 // This is similar to classic VM.
2656 if (method->is_object_constructor() &&
2657 throwable->is_a(method->method_holder())) {
2658 continue;
2659 } else {
2660 // there are none or we've seen them all - either way stop checking
2661 skip_throwableInit_check = true;
2662 }
2663 }
2664 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2665 if (skip_hidden) {
2666 if (total_count == 0) {
2667 // The top frame will be hidden from the stack trace.
2668 bt.set_has_hidden_top_frame();
2669 }
2670 continue;
2671 }
2672 }
2673
2674 bt.push(method, bci, CHECK);
2675 total_count++;
2676 }
2677
2678 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2679
2680 // Put completed stack trace into throwable object
2681 set_backtrace(throwable(), bt.backtrace());
2682 set_depth(throwable(), total_count);
2683 }
2684
2685 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2686 // No-op if stack trace is disabled
2687 if (!StackTraceInThrowable) {
2688 return;
2689 }
2690
2691 // Disable stack traces for some preallocated out of memory errors
2692 if (!Universe::should_fill_in_stack_trace(throwable)) {
2693 return;
2694 }
2695
2696 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2697 PreserveExceptionMark pm(THREAD);
2698
2699 fill_in_stack_trace(throwable, method, THREAD);
2700 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2701 // original exception via the PreserveExceptionMark destructor.
2702 CLEAR_PENDING_EXCEPTION;
2703 }
2704
2705 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2706 // Allocate stack trace - backtrace is created but not filled in
2707
2708 // No-op if stack trace is disabled
2709 if (!StackTraceInThrowable) return;
2710 BacktraceBuilder bt(CHECK); // creates a backtrace
2711 set_backtrace(throwable(), bt.backtrace());
2712 }
2713
2714
2715 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2716 // Fill in stack trace into preallocated backtrace (no GC)
2717
2718 // No-op if stack trace is disabled
2719 if (!StackTraceInThrowable) return;
2720
2721 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2722
2723 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2724
2725 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2726 assert(backtrace.not_null(), "backtrace should have been preallocated");
2727
2728 ResourceMark rm(THREAD);
2729 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2730
2731 BacktraceBuilder bt(THREAD, backtrace);
2732
2733 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2734 // methods as preallocated errors aren't created by "java" code.
2735
2736 // fill in as much stack trace as possible
2737 int chunk_count = 0;
2738 for (;!st.at_end(); st.next()) {
2739 bt.push(st.method(), st.bci(), CHECK);
2740 chunk_count++;
2741
2742 // Bail-out for deep stacks
2743 if (chunk_count >= trace_chunk_size) break;
2744 }
2745 set_depth(throwable(), chunk_count);
2746 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2747
2748 // We support the Throwable immutability protocol defined for Java 7.
2749 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2750 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2751 }
2752
2753 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2754 objArrayHandle stack_trace_array_h, TRAPS) {
2755
2756 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2757 THROW(vmSymbols::java_lang_NullPointerException());
2758 }
2759
2760 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2761
2762 if (stack_trace_array_h->length() != depth) {
2763 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2764 }
2765
2766 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2767 BacktraceIterator iter(result, THREAD);
2768
2769 int index = 0;
2770 while (iter.repeat()) {
2771 BacktraceElement bte = iter.next(THREAD);
2772
2773 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2774
2775 if (stack_trace_element.is_null()) {
2776 THROW(vmSymbols::java_lang_NullPointerException());
2777 }
2778
2779 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2780 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2781
2782 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2783 method,
2784 bte._version,
2785 bte._bci,
2786 bte._name,
2787 CHECK);
2788 }
2789 }
2790
2791 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2792 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2793 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2794 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2795 // symbolic stacktrace of 'throwable'.
2796 assert(throwable.not_null(), "shouldn't be");
2797
2798 // Now create the message from the original exception and thread name.
2799 ResourceMark rm(current);
2800 const char *message = nullptr;
2801 oop detailed_message = java_lang_Throwable::message(throwable());
2802 if (detailed_message != nullptr) {
2803 message = java_lang_String::as_utf8_string(detailed_message);
2804 }
2805 stringStream st;
2806 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2807 message == nullptr ? "" : ":");
2808 if (message == nullptr) {
2809 st.print("[in thread \"%s\"]", current->name());
2810 } else {
2811 st.print("%s [in thread \"%s\"]", message, current->name());
2812 }
2813
2814 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2815 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2816 // If new_exception returns a different exception while creating the exception,
2817 // abandon the attempt to save the initialization error and return null.
2818 if (init_error->klass()->name() != exception_name) {
2819 log_info(class, init)("Exception %s thrown while saving initialization exception",
2820 init_error->klass()->external_name());
2821 return Handle();
2822 }
2823
2824 // Call to java to fill in the stack trace and clear declaringClassObject to
2825 // not keep classes alive in the stack trace.
2826 // call this: public StackTraceElement[] getStackTrace()
2827 JavaValue result(T_ARRAY);
2828 JavaCalls::call_virtual(&result, throwable,
2829 vmClasses::Throwable_klass(),
2830 vmSymbols::getStackTrace_name(),
2831 vmSymbols::getStackTrace_signature(),
2832 current);
2833 if (!current->has_pending_exception()){
2834 Handle stack_trace(current, result.get_oop());
2835 assert(stack_trace->is_objArray(), "Should be an array");
2836 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
2837 // Clear backtrace because the stacktrace should be used instead.
2838 set_backtrace(init_error(), nullptr);
2839 } else {
2840 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
2841 init_error->klass()->external_name());
2842 current->clear_pending_exception();
2843 }
2844
2845 return init_error;
2846 }
2847
2848 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2849 JavaThread* current = JavaThread::current();
2850 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2851 BacktraceIterator iter(result, current);
2852 // No backtrace available.
2853 if (!iter.repeat()) return false;
2854
2855 // If the exception happened in a frame that has been hidden, i.e.,
2856 // omitted from the back trace, we can not compute the message.
2857 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2858 if (hidden != nullptr) {
2859 return false;
2860 }
2861
2862 // Get first backtrace element.
2863 BacktraceElement bte = iter.next(current);
2864
2865 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2866 assert(holder != nullptr, "first element should be non-null");
2867 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2868
2869 // Original version is no longer available.
2870 if (m == nullptr || !version_matches(m, bte._version)) {
2871 return false;
2872 }
2873
2874 *method = m;
2875 *bci = bte._bci;
2876 return true;
2877 }
2878
2879 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2880 // Allocate java.lang.StackTraceElement instance
2881 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2882 assert(k != nullptr, "must be loaded in 1.4+");
2883 if (k->should_be_initialized()) {
2884 k->initialize(CHECK_NULL);
2885 }
2886
2887 Handle element = k->allocate_instance_handle(CHECK_NULL);
2888
2889 int version = method->constants()->version();
2890 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2891 return element();
2892 }
2893
2894 void java_lang_StackTraceElement::fill_in(Handle element,
2895 InstanceKlass* holder, const methodHandle& method,
2896 int version, int bci, Symbol* name, TRAPS) {
2897 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2898
2899 ResourceMark rm(THREAD);
2900 HandleMark hm(THREAD);
2901
2902 // Fill in class name
2903 Handle java_class(THREAD, holder->java_mirror());
2904 oop classname = java_lang_Class::name(java_class, CHECK);
2905 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2906 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2907
2908 oop loader = holder->class_loader();
2909 if (loader != nullptr) {
2910 oop loader_name = java_lang_ClassLoader::name(loader);
2911 if (loader_name != nullptr)
2912 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2913 }
2914
2915 // Fill in method name
2916 oop methodname = StringTable::intern(name, CHECK);
2917 java_lang_StackTraceElement::set_methodName(element(), methodname);
2918
2919 // Fill in module name and version
2920 ModuleEntry* module = holder->module();
2921 if (module->is_named()) {
2922 oop module_name = StringTable::intern(module->name(), CHECK);
2923 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2924 oop module_version;
2925 if (module->version() != nullptr) {
2926 module_version = StringTable::intern(module->version(), CHECK);
2927 } else {
2928 module_version = nullptr;
2929 }
2930 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2931 }
2932
2933 if (method() == nullptr || !version_matches(method(), version)) {
2934 // The method was redefined, accurate line number information isn't available
2935 java_lang_StackTraceElement::set_fileName(element(), nullptr);
2936 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2937 } else {
2938 Symbol* source;
2939 oop source_file;
2940 int line_number;
2941 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2942
2943 java_lang_StackTraceElement::set_fileName(element(), source_file);
2944 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2945 }
2946 }
2947
2948 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2949 InstanceKlass* holder,
2950 int version,
2951 const methodHandle& method,
2952 int bci,
2953 Symbol*& source,
2954 oop& source_file,
2955 int& line_number, TRAPS) {
2956 // Fill in source file name and line number.
2957 source = Backtrace::get_source_file_name(holder, version);
2958 source_file = java_lang_Class::source_file(java_class());
2959 if (source != nullptr) {
2960 // Class was not redefined. We can trust its cache if set,
2961 // else we have to initialize it.
2962 if (source_file == nullptr) {
2963 source_file = StringTable::intern(source, CHECK);
2964 java_lang_Class::set_source_file(java_class(), source_file);
2965 }
2966 } else {
2967 // Class was redefined. Dump the cache if it was set.
2968 if (source_file != nullptr) {
2969 source_file = nullptr;
2970 java_lang_Class::set_source_file(java_class(), source_file);
2971 }
2972 }
2973 line_number = Backtrace::get_line_number(method(), bci);
2974 }
2975
2976 #if INCLUDE_JVMCI
2977 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2978 Symbol*& filename, int& line_number, TRAPS) {
2979 ResourceMark rm(THREAD);
2980 HandleMark hm(THREAD);
2981
2982 filename = nullptr;
2983 line_number = -1;
2984
2985 oop source_file;
2986 int version = method->constants()->version();
2987 InstanceKlass* holder = method->method_holder();
2988 Handle java_class(THREAD, holder->java_mirror());
2989 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2990 }
2991 #endif // INCLUDE_JVMCI
2992
2993 // java_lang_ClassFrameInfo
2994
2995 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
2996 int java_lang_ClassFrameInfo::_flags_offset;
2997
2998 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
2999 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3000 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3001
3002 void java_lang_ClassFrameInfo::compute_offsets() {
3003 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3004 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3005 }
3006
3007 #if INCLUDE_CDS
3008 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3009 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3010 }
3011 #endif
3012
3013 static int get_flags(const methodHandle& m) {
3014 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3015 if (m->is_object_constructor()) {
3016 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3017 } else {
3018 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3019 }
3020 if (m->caller_sensitive()) {
3021 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3022 }
3023 if (m->is_hidden()) {
3024 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3025 }
3026 assert((flags & 0xFF000000) == 0, "unexpected flags");
3027 return flags;
3028 }
3029
3030 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3031 return obj->obj_field(_classOrMemberName_offset);
3032 }
3033
3034 int java_lang_ClassFrameInfo::flags(oop obj) {
3035 return obj->int_field(_flags_offset);
3036 }
3037
3038 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3039 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3040 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3041 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3042 stackFrame->int_field_put(_flags_offset, flags);
3043 }
3044
3045 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3046 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3047 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3048 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3049 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3050 stackFrame->int_field_put(_flags_offset, flags);
3051 }
3052
3053
3054 // java_lang_StackFrameInfo
3055
3056 int java_lang_StackFrameInfo::_type_offset;
3057 int java_lang_StackFrameInfo::_name_offset;
3058 int java_lang_StackFrameInfo::_bci_offset;
3059 int java_lang_StackFrameInfo::_version_offset;
3060 int java_lang_StackFrameInfo::_contScope_offset;
3061
3062 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3063 macro(_type_offset, k, "type", object_signature, false); \
3064 macro(_name_offset, k, "name", string_signature, false); \
3065 macro(_bci_offset, k, "bci", int_signature, false); \
3066 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3067
3068 void java_lang_StackFrameInfo::compute_offsets() {
3069 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3070 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3071 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3072 }
3073
3074 #if INCLUDE_CDS
3075 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3076 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3077 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3078 }
3079 #endif
3080
3081 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3082 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3083 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3084 return method;
3085 }
3086
3087 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3088 // set Method* or mid/cpref
3089 HandleMark hm(THREAD);
3090 Handle cont_h(THREAD, cont);
3091 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3092
3093 // set bci
3094 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3095 // method may be redefined; store the version
3096 int version = method->constants()->version();
3097 assert((jushort)version == version, "version should be short");
3098 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3099
3100 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3101 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3102 }
3103
3104 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3105 ResourceMark rm(THREAD);
3106 HandleMark hm(THREAD);
3107
3108 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3109 InstanceKlass* holder = method->method_holder();
3110 short version = stackFrame->short_field(_version_offset);
3111 int bci = stackFrame->int_field(_bci_offset);
3112 Symbol* name = method->name();
3113 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3114 }
3115
3116 oop java_lang_StackFrameInfo::type(oop obj) {
3117 return obj->obj_field(_type_offset);
3118 }
3119
3120 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3121 obj->obj_field_put(_type_offset, value);
3122 }
3123
3124 oop java_lang_StackFrameInfo::name(oop obj) {
3125 return obj->obj_field(_name_offset);
3126 }
3127
3128 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3129 obj->obj_field_put(_name_offset, value);
3130 }
3131
3132 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3133 obj->short_field_put(_version_offset, value);
3134 }
3135
3136 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3137 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3138 obj->int_field_put(_bci_offset, value);
3139 }
3140
3141 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3142 obj->obj_field_put(_contScope_offset, value);
3143 }
3144
3145 int java_lang_LiveStackFrameInfo::_monitors_offset;
3146 int java_lang_LiveStackFrameInfo::_locals_offset;
3147 int java_lang_LiveStackFrameInfo::_operands_offset;
3148 int java_lang_LiveStackFrameInfo::_mode_offset;
3149
3150 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3151 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3152 macro(_locals_offset, k, "locals", object_array_signature, false); \
3153 macro(_operands_offset, k, "operands", object_array_signature, false); \
3154 macro(_mode_offset, k, "mode", int_signature, false)
3155
3156 void java_lang_LiveStackFrameInfo::compute_offsets() {
3157 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3158 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3159 }
3160
3161 #if INCLUDE_CDS
3162 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3163 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3164 }
3165 #endif
3166
3167 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3168 obj->obj_field_put(_monitors_offset, value);
3169 }
3170
3171 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3172 obj->obj_field_put(_locals_offset, value);
3173 }
3174
3175 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3176 obj->obj_field_put(_operands_offset, value);
3177 }
3178
3179 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3180 obj->int_field_put(_mode_offset, value);
3181 }
3182
3183
3184 // java_lang_AccessibleObject
3185
3186 int java_lang_reflect_AccessibleObject::_override_offset;
3187
3188 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3189 macro(_override_offset, k, "override", bool_signature, false)
3190
3191 void java_lang_reflect_AccessibleObject::compute_offsets() {
3192 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3193 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3194 }
3195
3196 #if INCLUDE_CDS
3197 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3198 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3199 }
3200 #endif
3201
3202 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3203 return (jboolean) reflect->bool_field(_override_offset);
3204 }
3205
3206 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3207 reflect->bool_field_put(_override_offset, (int) value);
3208 }
3209
3210 // java_lang_reflect_Method
3211
3212 int java_lang_reflect_Method::_clazz_offset;
3213 int java_lang_reflect_Method::_name_offset;
3214 int java_lang_reflect_Method::_returnType_offset;
3215 int java_lang_reflect_Method::_parameterTypes_offset;
3216 int java_lang_reflect_Method::_exceptionTypes_offset;
3217 int java_lang_reflect_Method::_slot_offset;
3218 int java_lang_reflect_Method::_modifiers_offset;
3219 int java_lang_reflect_Method::_signature_offset;
3220 int java_lang_reflect_Method::_annotations_offset;
3221 int java_lang_reflect_Method::_parameter_annotations_offset;
3222 int java_lang_reflect_Method::_annotation_default_offset;
3223
3224 #define METHOD_FIELDS_DO(macro) \
3225 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3226 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3227 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3228 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3229 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3230 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3231 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3232 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3233 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3234 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3235 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3236
3237 void java_lang_reflect_Method::compute_offsets() {
3238 InstanceKlass* k = vmClasses::reflect_Method_klass();
3239 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3240 }
3241
3242 #if INCLUDE_CDS
3243 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3244 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3245 }
3246 #endif
3247
3248 Handle java_lang_reflect_Method::create(TRAPS) {
3249 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3250 Klass* klass = vmClasses::reflect_Method_klass();
3251 // This class is eagerly initialized during VM initialization, since we keep a reference
3252 // to one of the methods
3253 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3254 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3255 }
3256
3257 oop java_lang_reflect_Method::clazz(oop reflect) {
3258 return reflect->obj_field(_clazz_offset);
3259 }
3260
3261 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3262 reflect->obj_field_put(_clazz_offset, value);
3263 }
3264
3265 int java_lang_reflect_Method::slot(oop reflect) {
3266 return reflect->int_field(_slot_offset);
3267 }
3268
3269 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3270 reflect->int_field_put(_slot_offset, value);
3271 }
3272
3273 void java_lang_reflect_Method::set_name(oop method, oop value) {
3274 method->obj_field_put(_name_offset, value);
3275 }
3276
3277 oop java_lang_reflect_Method::return_type(oop method) {
3278 return method->obj_field(_returnType_offset);
3279 }
3280
3281 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3282 method->obj_field_put(_returnType_offset, value);
3283 }
3284
3285 oop java_lang_reflect_Method::parameter_types(oop method) {
3286 return method->obj_field(_parameterTypes_offset);
3287 }
3288
3289 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3290 method->obj_field_put(_parameterTypes_offset, value);
3291 }
3292
3293 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3294 method->obj_field_put(_exceptionTypes_offset, value);
3295 }
3296
3297 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3298 method->int_field_put(_modifiers_offset, value);
3299 }
3300
3301 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3302 method->obj_field_put(_signature_offset, value);
3303 }
3304
3305 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3306 method->obj_field_put(_annotations_offset, value);
3307 }
3308
3309 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3310 method->obj_field_put(_parameter_annotations_offset, value);
3311 }
3312
3313 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3314 method->obj_field_put(_annotation_default_offset, value);
3315 }
3316
3317 int java_lang_reflect_Constructor::_clazz_offset;
3318 int java_lang_reflect_Constructor::_parameterTypes_offset;
3319 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3320 int java_lang_reflect_Constructor::_slot_offset;
3321 int java_lang_reflect_Constructor::_modifiers_offset;
3322 int java_lang_reflect_Constructor::_signature_offset;
3323 int java_lang_reflect_Constructor::_annotations_offset;
3324 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3325
3326 #define CONSTRUCTOR_FIELDS_DO(macro) \
3327 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3328 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3329 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3330 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3331 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3332 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3333 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3334 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3335
3336 void java_lang_reflect_Constructor::compute_offsets() {
3337 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3338 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3339 }
3340
3341 #if INCLUDE_CDS
3342 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3343 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3344 }
3345 #endif
3346
3347 Handle java_lang_reflect_Constructor::create(TRAPS) {
3348 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3349 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3350 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3351 InstanceKlass* ik = InstanceKlass::cast(k);
3352 // Ensure it is initialized
3353 ik->initialize(CHECK_NH);
3354 return ik->allocate_instance_handle(THREAD);
3355 }
3356
3357 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3358 return reflect->obj_field(_clazz_offset);
3359 }
3360
3361 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3362 reflect->obj_field_put(_clazz_offset, value);
3363 }
3364
3365 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3366 return constructor->obj_field(_parameterTypes_offset);
3367 }
3368
3369 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3370 constructor->obj_field_put(_parameterTypes_offset, value);
3371 }
3372
3373 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3374 constructor->obj_field_put(_exceptionTypes_offset, value);
3375 }
3376
3377 int java_lang_reflect_Constructor::slot(oop reflect) {
3378 return reflect->int_field(_slot_offset);
3379 }
3380
3381 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3382 reflect->int_field_put(_slot_offset, value);
3383 }
3384
3385 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3386 constructor->int_field_put(_modifiers_offset, value);
3387 }
3388
3389 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3390 constructor->obj_field_put(_signature_offset, value);
3391 }
3392
3393 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3394 constructor->obj_field_put(_annotations_offset, value);
3395 }
3396
3397 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3398 method->obj_field_put(_parameter_annotations_offset, value);
3399 }
3400
3401 int java_lang_reflect_Field::_clazz_offset;
3402 int java_lang_reflect_Field::_name_offset;
3403 int java_lang_reflect_Field::_type_offset;
3404 int java_lang_reflect_Field::_slot_offset;
3405 int java_lang_reflect_Field::_modifiers_offset;
3406 int java_lang_reflect_Field::_flags_offset;
3407 int java_lang_reflect_Field::_signature_offset;
3408 int java_lang_reflect_Field::_annotations_offset;
3409
3410 #define FIELD_FIELDS_DO(macro) \
3411 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3412 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3413 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3414 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3415 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3416 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3417 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3418 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3419
3420 void java_lang_reflect_Field::compute_offsets() {
3421 InstanceKlass* k = vmClasses::reflect_Field_klass();
3422 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3423 }
3424
3425 #if INCLUDE_CDS
3426 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3427 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3428 }
3429 #endif
3430
3431 Handle java_lang_reflect_Field::create(TRAPS) {
3432 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3433 Symbol* name = vmSymbols::java_lang_reflect_Field();
3434 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3435 InstanceKlass* ik = InstanceKlass::cast(k);
3436 // Ensure it is initialized
3437 ik->initialize(CHECK_NH);
3438 return ik->allocate_instance_handle(THREAD);
3439 }
3440
3441 oop java_lang_reflect_Field::clazz(oop reflect) {
3442 return reflect->obj_field(_clazz_offset);
3443 }
3444
3445 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3446 reflect->obj_field_put(_clazz_offset, value);
3447 }
3448
3449 oop java_lang_reflect_Field::name(oop field) {
3450 return field->obj_field(_name_offset);
3451 }
3452
3453 void java_lang_reflect_Field::set_name(oop field, oop value) {
3454 field->obj_field_put(_name_offset, value);
3455 }
3456
3457 oop java_lang_reflect_Field::type(oop field) {
3458 return field->obj_field(_type_offset);
3459 }
3460
3461 void java_lang_reflect_Field::set_type(oop field, oop value) {
3462 field->obj_field_put(_type_offset, value);
3463 }
3464
3465 int java_lang_reflect_Field::slot(oop reflect) {
3466 return reflect->int_field(_slot_offset);
3467 }
3468
3469 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3470 reflect->int_field_put(_slot_offset, value);
3471 }
3472
3473 int java_lang_reflect_Field::modifiers(oop field) {
3474 return field->int_field(_modifiers_offset);
3475 }
3476
3477 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3478 field->int_field_put(_modifiers_offset, value);
3479 }
3480
3481 void java_lang_reflect_Field::set_flags(oop field, int value) {
3482 field->int_field_put(_flags_offset, value);
3483 }
3484
3485 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3486 field->obj_field_put(_signature_offset, value);
3487 }
3488
3489 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3490 field->obj_field_put(_annotations_offset, value);
3491 }
3492
3493 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3494 // Allocate java.lang.reflect.RecordComponent instance
3495 HandleMark hm(THREAD);
3496 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3497 assert(ik != nullptr, "must be loaded");
3498 ik->initialize(CHECK_NULL);
3499
3500 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3501
3502 Handle decl_class(THREAD, holder->java_mirror());
3503 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3504
3505 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3506 oop component_name = StringTable::intern(name, CHECK_NULL);
3507 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3508
3509 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3510 Handle component_type_h =
3511 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3512 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3513
3514 Method* accessor_method = nullptr;
3515 {
3516 // Prepend "()" to type to create the full method signature.
3517 ResourceMark rm(THREAD);
3518 int sig_len = type->utf8_length() + 3; // "()" and null char
3519 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3520 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3521 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3522 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3523 }
3524
3525 if (accessor_method != nullptr) {
3526 methodHandle method(THREAD, accessor_method);
3527 oop m = Reflection::new_method(method, false, CHECK_NULL);
3528 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3529 } else {
3530 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3531 }
3532
3533 int sig_index = component->generic_signature_index();
3534 if (sig_index > 0) {
3535 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3536 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3537 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3538 } else {
3539 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3540 }
3541
3542 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3543 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3544
3545 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3546 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3547
3548 return element();
3549 }
3550
3551 int reflect_ConstantPool::_oop_offset;
3552
3553 #define CONSTANTPOOL_FIELDS_DO(macro) \
3554 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3555
3556 void reflect_ConstantPool::compute_offsets() {
3557 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3558 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3559 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3560 }
3561
3562 #if INCLUDE_CDS
3563 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3564 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3565 }
3566 #endif
3567
3568 int java_lang_reflect_Parameter::_name_offset;
3569 int java_lang_reflect_Parameter::_modifiers_offset;
3570 int java_lang_reflect_Parameter::_index_offset;
3571 int java_lang_reflect_Parameter::_executable_offset;
3572
3573 #define PARAMETER_FIELDS_DO(macro) \
3574 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3575 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3576 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3577 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3578
3579 void java_lang_reflect_Parameter::compute_offsets() {
3580 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3581 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3582 }
3583
3584 #if INCLUDE_CDS
3585 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3586 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3587 }
3588 #endif
3589
3590 Handle java_lang_reflect_Parameter::create(TRAPS) {
3591 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3592 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3593 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3594 InstanceKlass* ik = InstanceKlass::cast(k);
3595 // Ensure it is initialized
3596 ik->initialize(CHECK_NH);
3597 return ik->allocate_instance_handle(THREAD);
3598 }
3599
3600 oop java_lang_reflect_Parameter::name(oop param) {
3601 return param->obj_field(_name_offset);
3602 }
3603
3604 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3605 param->obj_field_put(_name_offset, value);
3606 }
3607
3608 int java_lang_reflect_Parameter::modifiers(oop param) {
3609 return param->int_field(_modifiers_offset);
3610 }
3611
3612 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3613 param->int_field_put(_modifiers_offset, value);
3614 }
3615
3616 int java_lang_reflect_Parameter::index(oop param) {
3617 return param->int_field(_index_offset);
3618 }
3619
3620 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3621 param->int_field_put(_index_offset, value);
3622 }
3623
3624 oop java_lang_reflect_Parameter::executable(oop param) {
3625 return param->obj_field(_executable_offset);
3626 }
3627
3628 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3629 param->obj_field_put(_executable_offset, value);
3630 }
3631
3632 // java_lang_Module
3633
3634 int java_lang_Module::_loader_offset;
3635 int java_lang_Module::_name_offset;
3636 int java_lang_Module::_module_entry_offset;
3637
3638 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3639 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3640 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3641 vmSymbols::java_lang_module_init_signature(),
3642 loader, module_name, CHECK_NH);
3643 }
3644
3645 #define MODULE_FIELDS_DO(macro) \
3646 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3647 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3648
3649 void java_lang_Module::compute_offsets() {
3650 InstanceKlass* k = vmClasses::Module_klass();
3651 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3652 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3653 }
3654
3655 #if INCLUDE_CDS
3656 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3657 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3658 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3659 }
3660 #endif
3661
3662 oop java_lang_Module::loader(oop module) {
3663 return module->obj_field(_loader_offset);
3664 }
3665
3666 void java_lang_Module::set_loader(oop module, oop value) {
3667 module->obj_field_put(_loader_offset, value);
3668 }
3669
3670 oop java_lang_Module::name(oop module) {
3671 return module->obj_field(_name_offset);
3672 }
3673
3674 void java_lang_Module::set_name(oop module, oop value) {
3675 module->obj_field_put(_name_offset, value);
3676 }
3677
3678 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3679 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3680 assert(module != nullptr, "module can't be null");
3681 assert(oopDesc::is_oop(module), "module must be oop");
3682
3683 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3684 return module_entry;
3685 }
3686
3687 ModuleEntry* java_lang_Module::module_entry(oop module) {
3688 ModuleEntry* module_entry = module_entry_raw(module);
3689 if (module_entry == nullptr) {
3690 // If the inject field containing the ModuleEntry* is null then return the
3691 // class loader's unnamed module.
3692 oop loader = java_lang_Module::loader(module);
3693 Handle h_loader = Handle(Thread::current(), loader);
3694 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3695 return loader_cld->unnamed_module();
3696 }
3697 return module_entry;
3698 }
3699
3700 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3701 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3702 assert(module != nullptr, "module can't be null");
3703 assert(oopDesc::is_oop(module), "module must be oop");
3704 module->address_field_put(_module_entry_offset, (address)module_entry);
3705 }
3706
3707 Handle reflect_ConstantPool::create(TRAPS) {
3708 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3709 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3710 // Ensure it is initialized
3711 k->initialize(CHECK_NH);
3712 return k->allocate_instance_handle(THREAD);
3713 }
3714
3715
3716 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3717 oop mirror = value->pool_holder()->java_mirror();
3718 // Save the mirror to get back the constant pool.
3719 reflect->obj_field_put(_oop_offset, mirror);
3720 }
3721
3722 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3723
3724 oop mirror = reflect->obj_field(_oop_offset);
3725 Klass* k = java_lang_Class::as_Klass(mirror);
3726 assert(k->is_instance_klass(), "Must be");
3727
3728 // Get the constant pool back from the klass. Since class redefinition
3729 // merges the new constant pool into the old, this is essentially the
3730 // same constant pool as the original. If constant pool merging is
3731 // no longer done in the future, this will have to change to save
3732 // the original.
3733 return InstanceKlass::cast(k)->constants();
3734 }
3735
3736
3737 // Support for java_lang_ref_Reference
3738
3739 bool java_lang_ref_Reference::_offsets_initialized;
3740
3741 int java_lang_ref_Reference::_referent_offset;
3742 int java_lang_ref_Reference::_queue_offset;
3743 int java_lang_ref_Reference::_next_offset;
3744 int java_lang_ref_Reference::_discovered_offset;
3745
3746 #define REFERENCE_FIELDS_DO(macro) \
3747 macro(_referent_offset, k, "referent", object_signature, false); \
3748 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3749 macro(_next_offset, k, "next", reference_signature, false); \
3750 macro(_discovered_offset, k, "discovered", reference_signature, false);
3751
3752 void java_lang_ref_Reference::compute_offsets() {
3753 if (_offsets_initialized) {
3754 return;
3755 }
3756 _offsets_initialized = true;
3757 InstanceKlass* k = vmClasses::Reference_klass();
3758 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3759 }
3760
3761 #if INCLUDE_CDS
3762 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3763 f->do_bool(&_offsets_initialized);
3764 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3765 }
3766 #endif
3767
3768 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3769 assert(obj != nullptr, "sanity");
3770 if (offset != _referent_offset) {
3771 return false;
3772 }
3773
3774 Klass* k = obj->klass();
3775 if (!k->is_instance_klass()) {
3776 return false;
3777 }
3778
3779 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3780 bool is_reference = ik->reference_type() != REF_NONE;
3781 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3782 return is_reference;
3783 }
3784
3785 int java_lang_boxing_object::_value_offset;
3786 int java_lang_boxing_object::_long_value_offset;
3787
3788 #define BOXING_FIELDS_DO(macro) \
3789 macro(_value_offset, integerKlass, "value", int_signature, false); \
3790 macro(_long_value_offset, longKlass, "value", long_signature, false);
3791
3792 void java_lang_boxing_object::compute_offsets() {
3793 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3794 InstanceKlass* longKlass = vmClasses::Long_klass();
3795 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3796 }
3797
3798 #if INCLUDE_CDS
3799 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3800 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3801 }
3802 #endif
3803
3804 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3805 Klass* k = vmClasses::box_klass(type);
3806 if (k == nullptr) return nullptr;
3807 InstanceKlass* ik = InstanceKlass::cast(k);
3808 if (!ik->is_initialized()) {
3809 ik->initialize(CHECK_NULL);
3810 }
3811 return ik->allocate_instance(THREAD);
3812 }
3813
3814
3815 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3816 oop box = initialize_and_allocate(type, CHECK_NULL);
3817 if (box == nullptr) return nullptr;
3818 switch (type) {
3819 case T_BOOLEAN:
3820 box->bool_field_put(_value_offset, value->z);
3821 break;
3822 case T_CHAR:
3823 box->char_field_put(_value_offset, value->c);
3824 break;
3825 case T_FLOAT:
3826 box->float_field_put(_value_offset, value->f);
3827 break;
3828 case T_DOUBLE:
3829 box->double_field_put(_long_value_offset, value->d);
3830 break;
3831 case T_BYTE:
3832 box->byte_field_put(_value_offset, value->b);
3833 break;
3834 case T_SHORT:
3835 box->short_field_put(_value_offset, value->s);
3836 break;
3837 case T_INT:
3838 box->int_field_put(_value_offset, value->i);
3839 break;
3840 case T_LONG:
3841 box->long_field_put(_long_value_offset, value->j);
3842 break;
3843 default:
3844 return nullptr;
3845 }
3846 return box;
3847 }
3848
3849
3850 BasicType java_lang_boxing_object::basic_type(oop box) {
3851 if (box == nullptr) return T_ILLEGAL;
3852 BasicType type = vmClasses::box_klass_type(box->klass());
3853 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3854 return T_ILLEGAL;
3855 return type;
3856 }
3857
3858
3859 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3860 BasicType type = vmClasses::box_klass_type(box->klass());
3861 switch (type) {
3862 case T_BOOLEAN:
3863 value->z = box->bool_field(_value_offset);
3864 break;
3865 case T_CHAR:
3866 value->c = box->char_field(_value_offset);
3867 break;
3868 case T_FLOAT:
3869 value->f = box->float_field(_value_offset);
3870 break;
3871 case T_DOUBLE:
3872 value->d = box->double_field(_long_value_offset);
3873 break;
3874 case T_BYTE:
3875 value->b = box->byte_field(_value_offset);
3876 break;
3877 case T_SHORT:
3878 value->s = box->short_field(_value_offset);
3879 break;
3880 case T_INT:
3881 value->i = box->int_field(_value_offset);
3882 break;
3883 case T_LONG:
3884 value->j = box->long_field(_long_value_offset);
3885 break;
3886 default:
3887 return T_ILLEGAL;
3888 } // end switch
3889 return type;
3890 }
3891
3892
3893 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3894 BasicType type = vmClasses::box_klass_type(box->klass());
3895 switch (type) {
3896 case T_BOOLEAN:
3897 box->bool_field_put(_value_offset, value->z);
3898 break;
3899 case T_CHAR:
3900 box->char_field_put(_value_offset, value->c);
3901 break;
3902 case T_FLOAT:
3903 box->float_field_put(_value_offset, value->f);
3904 break;
3905 case T_DOUBLE:
3906 box->double_field_put(_long_value_offset, value->d);
3907 break;
3908 case T_BYTE:
3909 box->byte_field_put(_value_offset, value->b);
3910 break;
3911 case T_SHORT:
3912 box->short_field_put(_value_offset, value->s);
3913 break;
3914 case T_INT:
3915 box->int_field_put(_value_offset, value->i);
3916 break;
3917 case T_LONG:
3918 box->long_field_put(_long_value_offset, value->j);
3919 break;
3920 default:
3921 return T_ILLEGAL;
3922 } // end switch
3923 return type;
3924 }
3925
3926
3927 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3928 switch (type) {
3929 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3930 case T_CHAR: st->print("%d", value->c); break;
3931 case T_BYTE: st->print("%d", value->b); break;
3932 case T_SHORT: st->print("%d", value->s); break;
3933 case T_INT: st->print("%d", value->i); break;
3934 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3935 case T_FLOAT: st->print("%f", value->f); break;
3936 case T_DOUBLE: st->print("%lf", value->d); break;
3937 default: st->print("type %d?", type); break;
3938 }
3939 }
3940
3941
3942 // Support for java_lang_ref_SoftReference
3943 //
3944
3945 int java_lang_ref_SoftReference::_timestamp_offset;
3946 int java_lang_ref_SoftReference::_static_clock_offset;
3947
3948 #define SOFTREFERENCE_FIELDS_DO(macro) \
3949 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3950 macro(_static_clock_offset, k, "clock", long_signature, true)
3951
3952 void java_lang_ref_SoftReference::compute_offsets() {
3953 InstanceKlass* k = vmClasses::SoftReference_klass();
3954 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3955 }
3956
3957 #if INCLUDE_CDS
3958 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3959 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3960 }
3961 #endif
3962
3963 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3964 return ref->long_field(_timestamp_offset);
3965 }
3966
3967 jlong java_lang_ref_SoftReference::clock() {
3968 InstanceKlass* ik = vmClasses::SoftReference_klass();
3969 oop base = ik->static_field_base_raw();
3970 return base->long_field(_static_clock_offset);
3971 }
3972
3973 void java_lang_ref_SoftReference::set_clock(jlong value) {
3974 InstanceKlass* ik = vmClasses::SoftReference_klass();
3975 oop base = ik->static_field_base_raw();
3976 base->long_field_put(_static_clock_offset, value);
3977 }
3978
3979 // Support for java_lang_invoke_DirectMethodHandle
3980
3981 int java_lang_invoke_DirectMethodHandle::_member_offset;
3982
3983 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3984 oop member_name = nullptr;
3985 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3986 "a DirectMethodHandle oop is expected");
3987 return dmh->obj_field(_member_offset);
3988 }
3989
3990 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3991 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3992
3993 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3994 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3995 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3996 }
3997
3998 #if INCLUDE_CDS
3999 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4000 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4001 }
4002 #endif
4003
4004 // Support for java_lang_invoke_MethodHandle
4005
4006 int java_lang_invoke_MethodHandle::_type_offset;
4007 int java_lang_invoke_MethodHandle::_form_offset;
4008
4009 int java_lang_invoke_MemberName::_clazz_offset;
4010 int java_lang_invoke_MemberName::_name_offset;
4011 int java_lang_invoke_MemberName::_type_offset;
4012 int java_lang_invoke_MemberName::_flags_offset;
4013 int java_lang_invoke_MemberName::_method_offset;
4014 int java_lang_invoke_MemberName::_vmindex_offset;
4015
4016 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4017 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4018
4019 int java_lang_invoke_LambdaForm::_vmentry_offset;
4020
4021 #define METHODHANDLE_FIELDS_DO(macro) \
4022 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4023 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4024
4025 void java_lang_invoke_MethodHandle::compute_offsets() {
4026 InstanceKlass* k = vmClasses::MethodHandle_klass();
4027 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4028 }
4029
4030 #if INCLUDE_CDS
4031 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4032 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4033 }
4034 #endif
4035
4036 #define MEMBERNAME_FIELDS_DO(macro) \
4037 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4038 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4039 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4040 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4041 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4042
4043 void java_lang_invoke_MemberName::compute_offsets() {
4044 InstanceKlass* k = vmClasses::MemberName_klass();
4045 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4046 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4047 }
4048
4049 #if INCLUDE_CDS
4050 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4051 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4052 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4053 }
4054 #endif
4055
4056 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4057 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4058
4059 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4060 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4061 assert(k != nullptr, "jdk mismatch");
4062 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4063 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4064 }
4065
4066 #if INCLUDE_CDS
4067 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4068 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4069 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4070 }
4071 #endif
4072
4073 #define LAMBDAFORM_FIELDS_DO(macro) \
4074 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4075
4076 void java_lang_invoke_LambdaForm::compute_offsets() {
4077 InstanceKlass* k = vmClasses::LambdaForm_klass();
4078 assert (k != nullptr, "jdk mismatch");
4079 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4080 }
4081
4082 #if INCLUDE_CDS
4083 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4084 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4085 }
4086 #endif
4087
4088 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4089 return obj != nullptr && is_subclass(obj->klass());
4090 }
4091
4092 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4093 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4094
4095 #define NEP_FIELDS_DO(macro) \
4096 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4097 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4098
4099 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4100 return obj != nullptr && is_subclass(obj->klass());
4101 }
4102
4103 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4104 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4105 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4106 }
4107
4108 #if INCLUDE_CDS
4109 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4110 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4111 }
4112 #endif
4113
4114 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4115 return entry->obj_field(_method_type_offset);
4116 }
4117
4118 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4119 return entry->long_field(_downcall_stub_address_offset);
4120 }
4121
4122 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4123 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4124 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4125 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4126 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4127 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4128 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4129
4130 #define ABIDescriptor_FIELDS_DO(macro) \
4131 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4132 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4133 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4134 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4135 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4136 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4137 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4138
4139 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4140 return obj != nullptr && is_subclass(obj->klass());
4141 }
4142
4143 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4144 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4145 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4146 }
4147
4148 #if INCLUDE_CDS
4149 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4150 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4151 }
4152 #endif
4153
4154 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4155 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4156 }
4157
4158 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4159 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4160 }
4161
4162 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4163 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4164 }
4165
4166 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4167 return entry->int_field(_stackAlignment_offset);
4168 }
4169
4170 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4171 return entry->int_field(_shadowSpace_offset);
4172 }
4173
4174 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4175 return entry->obj_field(_scratch1_offset);
4176 }
4177
4178 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4179 return entry->obj_field(_scratch2_offset);
4180 }
4181
4182 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4183 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4184 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4185 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4186
4187 #define VMStorage_FIELDS_DO(macro) \
4188 macro(_type_offset, k, "type", byte_signature, false); \
4189 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4190 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4191 macro(_debugName_offset, k, "debugName", string_signature, false); \
4192
4193 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4194 return obj != nullptr && is_subclass(obj->klass());
4195 }
4196
4197 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4198 InstanceKlass* k = vmClasses::VMStorage_klass();
4199 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4200 }
4201
4202 #if INCLUDE_CDS
4203 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4204 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4205 }
4206 #endif
4207
4208 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4209 return entry->byte_field(_type_offset);
4210 }
4211
4212 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4213 return entry->int_field(_indexOrOffset_offset);
4214 }
4215
4216 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4217 return entry->short_field(_segmentMaskOrSize_offset);
4218 }
4219
4220 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4221 return entry->obj_field(_debugName_offset);
4222 }
4223
4224 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4225 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4226
4227 #define CallConv_FIELDS_DO(macro) \
4228 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4229 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4230
4231 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4232 return obj != nullptr && is_subclass(obj->klass());
4233 }
4234
4235 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4236 InstanceKlass* k = vmClasses::CallConv_klass();
4237 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4238 }
4239
4240 #if INCLUDE_CDS
4241 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4242 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4243 }
4244 #endif
4245
4246 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4247 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4248 }
4249
4250 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4251 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4252 }
4253
4254 oop java_lang_invoke_MethodHandle::type(oop mh) {
4255 return mh->obj_field(_type_offset);
4256 }
4257
4258 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4259 mh->obj_field_put(_type_offset, mtype);
4260 }
4261
4262 oop java_lang_invoke_MethodHandle::form(oop mh) {
4263 assert(_form_offset != 0, "");
4264 return mh->obj_field(_form_offset);
4265 }
4266
4267 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4268 assert(_form_offset != 0, "");
4269 mh->obj_field_put(_form_offset, lform);
4270 }
4271
4272 /// MemberName accessors
4273
4274 oop java_lang_invoke_MemberName::clazz(oop mname) {
4275 assert(is_instance(mname), "wrong type");
4276 return mname->obj_field(_clazz_offset);
4277 }
4278
4279 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4280 assert(is_instance(mname), "wrong type");
4281 mname->obj_field_put(_clazz_offset, clazz);
4282 }
4283
4284 oop java_lang_invoke_MemberName::name(oop mname) {
4285 assert(is_instance(mname), "wrong type");
4286 return mname->obj_field(_name_offset);
4287 }
4288
4289 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4290 assert(is_instance(mname), "wrong type");
4291 mname->obj_field_put(_name_offset, name);
4292 }
4293
4294 oop java_lang_invoke_MemberName::type(oop mname) {
4295 assert(is_instance(mname), "wrong type");
4296 return mname->obj_field(_type_offset);
4297 }
4298
4299 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4300 assert(is_instance(mname), "wrong type");
4301 mname->obj_field_put(_type_offset, type);
4302 }
4303
4304 int java_lang_invoke_MemberName::flags(oop mname) {
4305 assert(is_instance(mname), "wrong type");
4306 return mname->int_field(_flags_offset);
4307 }
4308
4309 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4310 assert(is_instance(mname), "wrong type");
4311 mname->int_field_put(_flags_offset, flags);
4312 }
4313
4314
4315 // Return vmtarget from ResolvedMethodName method field through indirection
4316 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4317 assert(is_instance(mname), "wrong type");
4318 oop method = mname->obj_field(_method_offset);
4319 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4320 }
4321
4322 bool java_lang_invoke_MemberName::is_method(oop mname) {
4323 assert(is_instance(mname), "must be MemberName");
4324 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4325 }
4326
4327 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4328 assert(is_instance(mname), "wrong type");
4329 mname->obj_field_put(_method_offset, resolved_method);
4330 }
4331
4332 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4333 assert(is_instance(mname), "wrong type");
4334 return (intptr_t) mname->address_field(_vmindex_offset);
4335 }
4336
4337 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4338 assert(is_instance(mname), "wrong type");
4339 mname->address_field_put(_vmindex_offset, (address) index);
4340 }
4341
4342
4343 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4344 assert(is_instance(resolved_method), "wrong type");
4345 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4346 assert(m->is_method(), "must be");
4347 return m;
4348 }
4349
4350 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4351 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4352 assert(is_instance(resolved_method), "wrong type");
4353 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4354 }
4355
4356 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4357 assert(is_instance(resolved_method), "wrong type");
4358 resolved_method->obj_field_put(_vmholder_offset, holder);
4359 }
4360
4361 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4362 const Method* method = m();
4363
4364 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4365 oop resolved_method = ResolvedMethodTable::find_method(method);
4366 if (resolved_method != nullptr) {
4367 return resolved_method;
4368 }
4369
4370 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4371 if (!k->is_initialized()) {
4372 k->initialize(CHECK_NULL);
4373 }
4374
4375 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4376
4377 NoSafepointVerifier nsv;
4378
4379 if (method->is_old()) {
4380 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4381 method->get_new_method();
4382 }
4383
4384 InstanceKlass* holder = method->method_holder();
4385
4386 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4387 // Add a reference to the loader (actually mirror because hidden classes may not have
4388 // distinct loaders) to ensure the metadata is kept alive.
4389 // This mirror may be different than the one in clazz field.
4390 set_vmholder(new_resolved_method, holder->java_mirror());
4391
4392 // Set flag in class to indicate this InstanceKlass has entries in the table
4393 // to avoid walking table during redefinition if none of the redefined classes
4394 // have any membernames in the table.
4395 holder->set_has_resolved_methods();
4396
4397 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4398 }
4399
4400 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4401 assert(is_instance(lform), "wrong type");
4402 return lform->obj_field(_vmentry_offset);
4403 }
4404
4405
4406 // Support for java_lang_invoke_MethodType
4407
4408 int java_lang_invoke_MethodType::_rtype_offset;
4409 int java_lang_invoke_MethodType::_ptypes_offset;
4410
4411 #define METHODTYPE_FIELDS_DO(macro) \
4412 macro(_rtype_offset, k, "rtype", class_signature, false); \
4413 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4414
4415 void java_lang_invoke_MethodType::compute_offsets() {
4416 InstanceKlass* k = vmClasses::MethodType_klass();
4417 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4418 }
4419
4420 #if INCLUDE_CDS
4421 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4422 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4423 }
4424 #endif
4425
4426 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4427 st->print("(");
4428 objArrayOop pts = ptypes(mt);
4429 if (pts != nullptr) {
4430 for (int i = 0, limit = pts->length(); i < limit; i++) {
4431 java_lang_Class::print_signature(pts->obj_at(i), st);
4432 }
4433 } else {
4434 st->print("null");
4435 }
4436 st->print(")");
4437 oop rt = rtype(mt);
4438 if (rt != nullptr) {
4439 java_lang_Class::print_signature(rt, st);
4440 } else {
4441 st->print("null");
4442 }
4443 }
4444
4445 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4446 ResourceMark rm;
4447 stringStream buffer(128);
4448 print_signature(mt, &buffer);
4449 const char* sigstr = buffer.base();
4450 int siglen = (int) buffer.size();
4451 Symbol *name;
4452 if (!intern_if_not_found) {
4453 name = SymbolTable::probe(sigstr, siglen);
4454 } else {
4455 name = SymbolTable::new_symbol(sigstr, siglen);
4456 }
4457 return name;
4458 }
4459
4460 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4461 if (mt1 == mt2)
4462 return true;
4463 if (rtype(mt1) != rtype(mt2))
4464 return false;
4465 if (ptype_count(mt1) != ptype_count(mt2))
4466 return false;
4467 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4468 if (ptype(mt1, i) != ptype(mt2, i))
4469 return false;
4470 }
4471 return true;
4472 }
4473
4474 oop java_lang_invoke_MethodType::rtype(oop mt) {
4475 assert(is_instance(mt), "must be a MethodType");
4476 return mt->obj_field(_rtype_offset);
4477 }
4478
4479 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4480 assert(is_instance(mt), "must be a MethodType");
4481 return (objArrayOop) mt->obj_field(_ptypes_offset);
4482 }
4483
4484 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4485 return ptypes(mt)->obj_at(idx);
4486 }
4487
4488 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4489 return ptypes(mt)->length();
4490 }
4491
4492 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4493 objArrayOop pts = ptypes(mt);
4494 int count = pts->length();
4495 int slots = 0;
4496 for (int i = 0; i < count; i++) {
4497 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4498 slots += type2size[bt];
4499 }
4500 return slots;
4501 }
4502
4503 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4504 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4505 return type2size[bt];
4506 }
4507
4508
4509 // Support for java_lang_invoke_CallSite
4510
4511 int java_lang_invoke_CallSite::_target_offset;
4512 int java_lang_invoke_CallSite::_context_offset;
4513
4514 #define CALLSITE_FIELDS_DO(macro) \
4515 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4516 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4517
4518 void java_lang_invoke_CallSite::compute_offsets() {
4519 InstanceKlass* k = vmClasses::CallSite_klass();
4520 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4521 }
4522
4523 #if INCLUDE_CDS
4524 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4525 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4526 }
4527 #endif
4528
4529 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4530 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4531
4532 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4533 return dep_oop;
4534 }
4535
4536 // Support for java_lang_invoke_ConstantCallSite
4537
4538 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4539
4540 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4541 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4542
4543 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4544 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4545 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4546 }
4547
4548 #if INCLUDE_CDS
4549 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4550 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4551 }
4552 #endif
4553
4554 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4555
4556 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4557 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4558
4559 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4560 InstanceKlass* k = vmClasses::Context_klass();
4561 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4562 }
4563
4564 #if INCLUDE_CDS
4565 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4566 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4567 }
4568 #endif
4569
4570 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4571 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4572 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4573 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4574 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4575 return dep_ctx;
4576 }
4577
4578 // Support for java_security_AccessControlContext
4579
4580 int java_security_AccessControlContext::_context_offset;
4581 int java_security_AccessControlContext::_privilegedContext_offset;
4582 int java_security_AccessControlContext::_isPrivileged_offset;
4583 int java_security_AccessControlContext::_isAuthorized_offset;
4584
4585 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4586 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4587 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4588 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4589 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4590
4591 void java_security_AccessControlContext::compute_offsets() {
4592 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4593 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4594 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4595 }
4596
4597 #if INCLUDE_CDS
4598 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4599 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4600 }
4601 #endif
4602
4603 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4604 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4605 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4606 // Ensure klass is initialized
4607 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4608 // Allocate result
4609 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4610 // Fill in values
4611 result->obj_field_put(_context_offset, context());
4612 result->obj_field_put(_privilegedContext_offset, privileged_context());
4613 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4614 result->bool_field_put(_isAuthorized_offset, true);
4615 return result;
4616 }
4617
4618
4619 // Support for java_lang_ClassLoader
4620
4621 int java_lang_ClassLoader::_loader_data_offset;
4622 int java_lang_ClassLoader::_parallelCapable_offset;
4623 int java_lang_ClassLoader::_name_offset;
4624 int java_lang_ClassLoader::_nameAndId_offset;
4625 int java_lang_ClassLoader::_unnamedModule_offset;
4626 int java_lang_ClassLoader::_parent_offset;
4627
4628 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4629 assert(loader != nullptr, "loader must not be null");
4630 assert(oopDesc::is_oop(loader), "loader must be oop");
4631 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4632 }
4633
4634 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4635 assert(loader != nullptr, "loader must not be null");
4636 assert(oopDesc::is_oop(loader), "loader must be oop");
4637 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4638 }
4639
4640 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4641 assert(loader != nullptr, "loader must not be null");
4642 assert(oopDesc::is_oop(loader), "loader must be oop");
4643 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4644 }
4645
4646 #define CLASSLOADER_FIELDS_DO(macro) \
4647 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4648 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4649 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4650 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4651 macro(_parent_offset, k1, "parent", classloader_signature, false)
4652
4653 void java_lang_ClassLoader::compute_offsets() {
4654 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4655 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4656
4657 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4658 }
4659
4660 #if INCLUDE_CDS
4661 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4662 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4663 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4664 }
4665 #endif
4666
4667 oop java_lang_ClassLoader::parent(oop loader) {
4668 assert(is_instance(loader), "loader must be oop");
4669 return loader->obj_field(_parent_offset);
4670 }
4671
4672 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4673 assert(is_instance(loader), "loader must be oop");
4674 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4675 }
4676
4677 // Returns the name field of this class loader. If the name field has not
4678 // been set, null will be returned.
4679 oop java_lang_ClassLoader::name(oop loader) {
4680 assert(is_instance(loader), "loader must be oop");
4681 return loader->obj_field(_name_offset);
4682 }
4683
4684 // Returns the nameAndId field of this class loader. The format is
4685 // as follows:
4686 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4687 // If the defining loader has no name then <qualified-class-name> @<id>
4688 // If built-in loader, then omit '@<id>' as there is only one instance.
4689 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4690 oop java_lang_ClassLoader::nameAndId(oop loader) {
4691 assert(is_instance(loader), "loader must be oop");
4692 return loader->obj_field(_nameAndId_offset);
4693 }
4694
4695 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4696 assert(is_instance(loader), "loader must be oop");
4697 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4698 oop acl = loader;
4699 debug_only(jint loop_count = 0);
4700 // This loop taken verbatim from ClassLoader.java:
4701 do {
4702 acl = parent(acl);
4703 if (cl == acl) {
4704 return true;
4705 }
4706 assert(++loop_count > 0, "loop_count overflow");
4707 } while (acl != nullptr);
4708 return false;
4709 }
4710
4711 bool java_lang_ClassLoader::is_instance(oop obj) {
4712 return obj != nullptr && is_subclass(obj->klass());
4713 }
4714
4715
4716 // For class loader classes, parallelCapable defined
4717 // based on non-null field
4718 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4719 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4720 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4721 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4722 }
4723
4724 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4725 // Fix for 4474172; see evaluation for more details
4726 loader = non_reflection_class_loader(loader);
4727
4728 oop cl = SystemDictionary::java_system_loader();
4729 while(cl != nullptr) {
4730 if (cl == loader) return true;
4731 cl = parent(cl);
4732 }
4733 return false;
4734 }
4735
4736 // Return true if this is one of the class loaders associated with
4737 // the generated bytecodes for serialization constructor returned
4738 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
4739 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4740 if (loader != nullptr) {
4741 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4742 // This might be null in non-1.4 JDKs
4743 return (delegating_cl_class != nullptr && loader->is_a(delegating_cl_class));
4744 }
4745 return false;
4746 }
4747
4748 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4749 // See whether this is one of the class loaders associated with
4750 // the generated bytecodes for reflection, and if so, "magically"
4751 // delegate to its parent to prevent class loading from occurring
4752 // in places where applications using reflection didn't expect it.
4753 if (is_reflection_class_loader(loader)) {
4754 return parent(loader);
4755 }
4756 return loader;
4757 }
4758
4759 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4760 assert(is_instance(loader), "loader must be oop");
4761 return loader->obj_field(_unnamedModule_offset);
4762 }
4763
4764 // Support for java_lang_System
4765 //
4766
4767 int java_lang_System::_static_in_offset;
4768 int java_lang_System::_static_out_offset;
4769 int java_lang_System::_static_err_offset;
4770 int java_lang_System::_static_security_offset;
4771 int java_lang_System::_static_allow_security_offset;
4772 int java_lang_System::_static_never_offset;
4773
4774 #define SYSTEM_FIELDS_DO(macro) \
4775 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4776 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4777 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4778 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4779 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4780 macro(_static_never_offset, k, "NEVER", int_signature, true)
4781
4782 void java_lang_System::compute_offsets() {
4783 InstanceKlass* k = vmClasses::System_klass();
4784 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4785 }
4786
4787 // This field tells us that a security manager can never be installed so we
4788 // can completely skip populating the ProtectionDomainCacheTable.
4789 bool java_lang_System::allow_security_manager() {
4790 static int initialized = false;
4791 static bool allowed = true; // default
4792 if (!initialized) {
4793 oop base = vmClasses::System_klass()->static_field_base_raw();
4794 int never = base->int_field(_static_never_offset);
4795 allowed = (base->int_field(_static_allow_security_offset) != never);
4796 initialized = true;
4797 }
4798 return allowed;
4799 }
4800
4801 // This field tells us that a security manager is installed.
4802 bool java_lang_System::has_security_manager() {
4803 oop base = vmClasses::System_klass()->static_field_base_raw();
4804 return base->obj_field(_static_security_offset) != nullptr;
4805 }
4806
4807 #if INCLUDE_CDS
4808 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4809 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4810 }
4811 #endif
4812
4813 // Support for jdk_internal_misc_UnsafeConstants
4814 //
4815 class UnsafeConstantsFixup : public FieldClosure {
4816 private:
4817 int _address_size;
4818 int _page_size;
4819 bool _big_endian;
4820 bool _use_unaligned_access;
4821 int _data_cache_line_flush_size;
4822 public:
4823 UnsafeConstantsFixup() {
4824 // round up values for all static final fields
4825 _address_size = sizeof(void*);
4826 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4827 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4828 _use_unaligned_access = UseUnalignedAccesses;
4829 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4830 }
4831
4832 void do_field(fieldDescriptor* fd) {
4833 oop mirror = fd->field_holder()->java_mirror();
4834 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4835 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4836 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4837 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4838 if (fd->name() == vmSymbols::address_size_name()) {
4839 mirror->int_field_put(fd->offset(), _address_size);
4840 } else if (fd->name() == vmSymbols::page_size_name()) {
4841 mirror->int_field_put(fd->offset(), _page_size);
4842 } else if (fd->name() == vmSymbols::big_endian_name()) {
4843 mirror->bool_field_put(fd->offset(), _big_endian);
4844 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4845 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4846 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4847 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4848 } else {
4849 assert(false, "unexpected UnsafeConstants field");
4850 }
4851 }
4852 };
4853
4854 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4855 UnsafeConstantsFixup fixup;
4856 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4857 }
4858
4859
4860 // java_lang_StackTraceElement
4861
4862 int java_lang_StackTraceElement::_methodName_offset;
4863 int java_lang_StackTraceElement::_fileName_offset;
4864 int java_lang_StackTraceElement::_lineNumber_offset;
4865 int java_lang_StackTraceElement::_moduleName_offset;
4866 int java_lang_StackTraceElement::_moduleVersion_offset;
4867 int java_lang_StackTraceElement::_classLoaderName_offset;
4868 int java_lang_StackTraceElement::_declaringClass_offset;
4869 int java_lang_StackTraceElement::_declaringClassObject_offset;
4870
4871 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4872 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4873 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4874 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4875 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4876 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4877 macro(_methodName_offset, k, "methodName", string_signature, false); \
4878 macro(_fileName_offset, k, "fileName", string_signature, false); \
4879 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4880
4881 // Support for java_lang_StackTraceElement
4882 void java_lang_StackTraceElement::compute_offsets() {
4883 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4884 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4885 }
4886
4887 #if INCLUDE_CDS
4888 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4889 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4890 }
4891 #endif
4892
4893 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4894 element->obj_field_put(_fileName_offset, value);
4895 }
4896
4897 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4898 element->obj_field_put(_declaringClass_offset, value);
4899 }
4900
4901 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4902 element->obj_field_put(_methodName_offset, value);
4903 }
4904
4905 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4906 element->int_field_put(_lineNumber_offset, value);
4907 }
4908
4909 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4910 element->obj_field_put(_moduleName_offset, value);
4911 }
4912
4913 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4914 element->obj_field_put(_moduleVersion_offset, value);
4915 }
4916
4917 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4918 element->obj_field_put(_classLoaderName_offset, value);
4919 }
4920
4921 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4922 element->obj_field_put(_declaringClassObject_offset, value);
4923 }
4924
4925
4926 // java_lang_AssertionStatusDirectives
4927
4928 int java_lang_AssertionStatusDirectives::_classes_offset;
4929 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4930 int java_lang_AssertionStatusDirectives::_packages_offset;
4931 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4932 int java_lang_AssertionStatusDirectives::_deflt_offset;
4933
4934 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4935 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4936 macro(_classes_offset, k, "classes", string_array_signature, false); \
4937 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4938 macro(_packages_offset, k, "packages", string_array_signature, false); \
4939 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4940 macro(_deflt_offset, k, "deflt", bool_signature, false)
4941
4942 void java_lang_AssertionStatusDirectives::compute_offsets() {
4943 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4944 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4945 }
4946
4947 #if INCLUDE_CDS
4948 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4949 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4950 }
4951 #endif
4952
4953 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4954 o->obj_field_put(_classes_offset, val);
4955 }
4956
4957 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4958 o->obj_field_put(_classEnabled_offset, val);
4959 }
4960
4961 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4962 o->obj_field_put(_packages_offset, val);
4963 }
4964
4965 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4966 o->obj_field_put(_packageEnabled_offset, val);
4967 }
4968
4969 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4970 o->bool_field_put(_deflt_offset, val);
4971 }
4972
4973 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4974
4975 #define AOS_FIELDS_DO(macro) \
4976 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4977
4978 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4979 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4980 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4981 }
4982
4983 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4984 assert(_owner_offset != 0, "Must be initialized");
4985 return obj->obj_field(_owner_offset);
4986 }
4987
4988 #if INCLUDE_CDS
4989 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4990 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4991 }
4992 #endif
4993
4994 int vector_VectorPayload::_payload_offset;
4995
4996 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4997 macro(_payload_offset, k, "payload", object_signature, false)
4998
4999 void vector_VectorPayload::compute_offsets() {
5000 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5001 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5002 }
5003
5004 #if INCLUDE_CDS
5005 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5006 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5007 }
5008 #endif
5009
5010 void vector_VectorPayload::set_payload(oop o, oop val) {
5011 o->obj_field_put(_payload_offset, val);
5012 }
5013
5014 bool vector_VectorPayload::is_instance(oop obj) {
5015 return obj != nullptr && is_subclass(obj->klass());
5016 }
5017
5018 int java_lang_Integer_IntegerCache::_static_cache_offset;
5019 int java_lang_Long_LongCache::_static_cache_offset;
5020 int java_lang_Character_CharacterCache::_static_cache_offset;
5021 int java_lang_Short_ShortCache::_static_cache_offset;
5022 int java_lang_Byte_ByteCache::_static_cache_offset;
5023
5024 #define INTEGER_CACHE_FIELDS_DO(macro) \
5025 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5026
5027 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5028 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5029 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5030 }
5031
5032 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5033 oop base = ik->static_field_base_raw();
5034 return objArrayOop(base->obj_field(_static_cache_offset));
5035 }
5036
5037 Symbol* java_lang_Integer_IntegerCache::symbol() {
5038 return vmSymbols::java_lang_Integer_IntegerCache();
5039 }
5040
5041 #if INCLUDE_CDS
5042 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5043 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5044 }
5045 #endif
5046 #undef INTEGER_CACHE_FIELDS_DO
5047
5048 jint java_lang_Integer::value(oop obj) {
5049 jvalue v;
5050 java_lang_boxing_object::get_value(obj, &v);
5051 return v.i;
5052 }
5053
5054 #define LONG_CACHE_FIELDS_DO(macro) \
5055 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5056
5057 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5058 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5059 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5060 }
5061
5062 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5063 oop base = ik->static_field_base_raw();
5064 return objArrayOop(base->obj_field(_static_cache_offset));
5065 }
5066
5067 Symbol* java_lang_Long_LongCache::symbol() {
5068 return vmSymbols::java_lang_Long_LongCache();
5069 }
5070
5071 #if INCLUDE_CDS
5072 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5073 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5074 }
5075 #endif
5076 #undef LONG_CACHE_FIELDS_DO
5077
5078 jlong java_lang_Long::value(oop obj) {
5079 jvalue v;
5080 java_lang_boxing_object::get_value(obj, &v);
5081 return v.j;
5082 }
5083
5084 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5085 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5086
5087 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5088 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5089 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5090 }
5091
5092 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5093 oop base = ik->static_field_base_raw();
5094 return objArrayOop(base->obj_field(_static_cache_offset));
5095 }
5096
5097 Symbol* java_lang_Character_CharacterCache::symbol() {
5098 return vmSymbols::java_lang_Character_CharacterCache();
5099 }
5100
5101 #if INCLUDE_CDS
5102 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5103 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5104 }
5105 #endif
5106 #undef CHARACTER_CACHE_FIELDS_DO
5107
5108 jchar java_lang_Character::value(oop obj) {
5109 jvalue v;
5110 java_lang_boxing_object::get_value(obj, &v);
5111 return v.c;
5112 }
5113
5114 #define SHORT_CACHE_FIELDS_DO(macro) \
5115 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5116
5117 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5118 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5119 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5120 }
5121
5122 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5123 oop base = ik->static_field_base_raw();
5124 return objArrayOop(base->obj_field(_static_cache_offset));
5125 }
5126
5127 Symbol* java_lang_Short_ShortCache::symbol() {
5128 return vmSymbols::java_lang_Short_ShortCache();
5129 }
5130
5131 #if INCLUDE_CDS
5132 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5133 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5134 }
5135 #endif
5136 #undef SHORT_CACHE_FIELDS_DO
5137
5138 jshort java_lang_Short::value(oop obj) {
5139 jvalue v;
5140 java_lang_boxing_object::get_value(obj, &v);
5141 return v.s;
5142 }
5143
5144 #define BYTE_CACHE_FIELDS_DO(macro) \
5145 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5146
5147 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5148 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5149 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5150 }
5151
5152 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5153 oop base = ik->static_field_base_raw();
5154 return objArrayOop(base->obj_field(_static_cache_offset));
5155 }
5156
5157 Symbol* java_lang_Byte_ByteCache::symbol() {
5158 return vmSymbols::java_lang_Byte_ByteCache();
5159 }
5160
5161 #if INCLUDE_CDS
5162 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5163 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5164 }
5165 #endif
5166 #undef BYTE_CACHE_FIELDS_DO
5167
5168 jbyte java_lang_Byte::value(oop obj) {
5169 jvalue v;
5170 java_lang_boxing_object::get_value(obj, &v);
5171 return v.b;
5172 }
5173
5174 int java_lang_Boolean::_static_TRUE_offset;
5175 int java_lang_Boolean::_static_FALSE_offset;
5176
5177 #define BOOLEAN_FIELDS_DO(macro) \
5178 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5179 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5180
5181
5182 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5183 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5184 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5185 }
5186
5187 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5188 oop base = ik->static_field_base_raw();
5189 return base->obj_field(_static_TRUE_offset);
5190 }
5191
5192 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5193 oop base = ik->static_field_base_raw();
5194 return base->obj_field(_static_FALSE_offset);
5195 }
5196
5197 Symbol* java_lang_Boolean::symbol() {
5198 return vmSymbols::java_lang_Boolean();
5199 }
5200
5201 #if INCLUDE_CDS
5202 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5203 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5204 }
5205 #endif
5206 #undef BOOLEAN_CACHE_FIELDS_DO
5207
5208 jboolean java_lang_Boolean::value(oop obj) {
5209 jvalue v;
5210 java_lang_boxing_object::get_value(obj, &v);
5211 return v.z;
5212 }
5213
5214 // java_lang_reflect_RecordComponent
5215
5216 int java_lang_reflect_RecordComponent::_clazz_offset;
5217 int java_lang_reflect_RecordComponent::_name_offset;
5218 int java_lang_reflect_RecordComponent::_type_offset;
5219 int java_lang_reflect_RecordComponent::_accessor_offset;
5220 int java_lang_reflect_RecordComponent::_signature_offset;
5221 int java_lang_reflect_RecordComponent::_annotations_offset;
5222 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5223
5224 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5225 macro(_clazz_offset, k, "clazz", class_signature, false); \
5226 macro(_name_offset, k, "name", string_signature, false); \
5227 macro(_type_offset, k, "type", class_signature, false); \
5228 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5229 macro(_signature_offset, k, "signature", string_signature, false); \
5230 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5231 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5232
5233 // Support for java_lang_reflect_RecordComponent
5234 void java_lang_reflect_RecordComponent::compute_offsets() {
5235 InstanceKlass* k = vmClasses::RecordComponent_klass();
5236 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5237 }
5238
5239 #if INCLUDE_CDS
5240 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5241 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5242 }
5243 #endif
5244
5245 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5246 element->obj_field_put(_clazz_offset, value);
5247 }
5248
5249 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5250 element->obj_field_put(_name_offset, value);
5251 }
5252
5253 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5254 element->obj_field_put(_type_offset, value);
5255 }
5256
5257 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5258 element->obj_field_put(_accessor_offset, value);
5259 }
5260
5261 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5262 element->obj_field_put(_signature_offset, value);
5263 }
5264
5265 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5266 element->obj_field_put(_annotations_offset, value);
5267 }
5268
5269 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5270 element->obj_field_put(_typeAnnotations_offset, value);
5271 }
5272
5273 // java_lang_InternalError
5274 int java_lang_InternalError::_during_unsafe_access_offset;
5275
5276 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5277 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5278 }
5279
5280 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5281 return internal_error->bool_field(_during_unsafe_access_offset);
5282 }
5283
5284 void java_lang_InternalError::compute_offsets() {
5285 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5286 }
5287
5288 #if INCLUDE_CDS
5289 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5290 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5291 }
5292 #endif
5293
5294 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5295 f(java_lang_Class) \
5296 f(java_lang_String) \
5297 f(java_lang_ref_Reference) \
5298 //end
5299
5300 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5301 f(java_lang_System) \
5302 f(java_lang_ClassLoader) \
5303 f(java_lang_Throwable) \
5304 f(java_lang_Thread) \
5305 f(java_lang_Thread_FieldHolder) \
5306 f(java_lang_Thread_Constants) \
5307 f(java_lang_ThreadGroup) \
5308 f(java_lang_VirtualThread) \
5309 f(java_lang_InternalError) \
5310 f(java_lang_AssertionStatusDirectives) \
5311 f(java_lang_ref_SoftReference) \
5312 f(java_lang_invoke_MethodHandle) \
5313 f(java_lang_invoke_DirectMethodHandle) \
5314 f(java_lang_invoke_MemberName) \
5315 f(java_lang_invoke_ResolvedMethodName) \
5316 f(java_lang_invoke_LambdaForm) \
5317 f(java_lang_invoke_MethodType) \
5318 f(java_lang_invoke_CallSite) \
5319 f(java_lang_invoke_ConstantCallSite) \
5320 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5321 f(java_security_AccessControlContext) \
5322 f(java_lang_reflect_AccessibleObject) \
5323 f(java_lang_reflect_Method) \
5324 f(java_lang_reflect_Constructor) \
5325 f(java_lang_reflect_Field) \
5326 f(java_lang_reflect_RecordComponent) \
5327 f(reflect_ConstantPool) \
5328 f(java_lang_reflect_Parameter) \
5329 f(java_lang_Module) \
5330 f(java_lang_StackTraceElement) \
5331 f(java_lang_ClassFrameInfo) \
5332 f(java_lang_StackFrameInfo) \
5333 f(java_lang_LiveStackFrameInfo) \
5334 f(jdk_internal_vm_ContinuationScope) \
5335 f(jdk_internal_vm_Continuation) \
5336 f(jdk_internal_vm_StackChunk) \
5337 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5338 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5339 f(jdk_internal_foreign_abi_ABIDescriptor) \
5340 f(jdk_internal_foreign_abi_VMStorage) \
5341 f(jdk_internal_foreign_abi_CallConv) \
5342 f(jdk_internal_misc_UnsafeConstants) \
5343 f(java_lang_boxing_object) \
5344 f(vector_VectorPayload) \
5345 //end
5346
5347 #define BASIC_JAVA_CLASSES_DO(f) \
5348 BASIC_JAVA_CLASSES_DO_PART1(f) \
5349 BASIC_JAVA_CLASSES_DO_PART2(f)
5350
5351 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5352
5353 // Compute field offsets of all the classes in this file
5354 void JavaClasses::compute_offsets() {
5355 if (UseSharedSpaces) {
5356 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5357 JvmtiExport::has_early_class_hook_env()),
5358 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5359 // None of the classes used by the rest of this function can be replaced by
5360 // JVMTI ClassFileLoadHook.
5361 // We are safe to use the archived offsets, which have already been restored
5362 // by JavaClasses::serialize_offsets, without computing the offsets again.
5363 return;
5364 }
5365
5366 // We have already called the compute_offsets() of the
5367 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5368 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5369 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5370 }
5371
5372 #if INCLUDE_CDS
5373 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5374
5375 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5376 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5377 }
5378 #endif
5379
5380 #if INCLUDE_CDS_JAVA_HEAP
5381 bool JavaClasses::is_supported_for_archiving(oop obj) {
5382 Klass* klass = obj->klass();
5383
5384 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5385 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5386 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5387 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5388 // So for now we cannot not support these classes for archiving.
5389 //
5390 // These objects typically are not referenced by static fields, but rather by resolved
5391 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5392 klass == vmClasses::ResolvedMethodName_klass() ||
5393 klass == vmClasses::MemberName_klass() ||
5394 klass == vmClasses::Context_klass() ||
5395 // It's problematic to archive Reference objects. One of the reasons is that
5396 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5397 klass->is_subclass_of(vmClasses::Reference_klass())) {
5398 return false;
5399 }
5400
5401 return true;
5402 }
5403 #endif
5404
5405 #ifndef PRODUCT
5406
5407 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5408
5409 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5410 const char* field_sig) {
5411 EXCEPTION_MARK;
5412 fieldDescriptor fd;
5413 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5414 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5415 InstanceKlass* ik = InstanceKlass::cast(k);
5416 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5417 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5418 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5419 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5420 return false;
5421 }
5422 if (fd.is_static()) {
5423 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5424 return false;
5425 }
5426 if (fd.offset() == deserialized_offset ) {
5427 return true;
5428 } else {
5429 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5430 klass_name, field_name, deserialized_offset, fd.offset());
5431 return false;
5432 }
5433 }
5434
5435 void JavaClasses::check_offsets() {
5436 bool valid = true;
5437
5438 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5439 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5440
5441 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5442 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5443
5444 // Boxed primitive objects (java_lang_boxing_object)
5445
5446 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5447 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5448 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5449 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5450 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5451 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5452 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5453 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5454
5455 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5456 }
5457
5458 #endif // PRODUCT
5459
5460 int InjectedField::compute_offset() {
5461 InstanceKlass* ik = InstanceKlass::cast(klass());
5462 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5463 if (!may_be_java && !fs.field_flags().is_injected()) {
5464 // Only look at injected fields
5465 continue;
5466 }
5467 if (fs.name() == name() && fs.signature() == signature()) {
5468 return fs.offset();
5469 }
5470 }
5471 ResourceMark rm;
5472 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)" : "");
5473 #ifndef PRODUCT
5474 ik->print();
5475 tty->print_cr("all fields:");
5476 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5477 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5478 }
5479 #endif //PRODUCT
5480 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5481 return -1;
5482 }
5483
5484 void javaClasses_init() {
5485 JavaClasses::compute_offsets();
5486 JavaClasses::check_offsets();
5487 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5488 }