1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/altHashing.hpp"
32 #include "classfile/classLoaderData.inline.hpp"
33 #include "classfile/javaClasses.inline.hpp"
34 #include "classfile/javaClassesImpl.hpp"
35 #include "classfile/javaThreadStatus.hpp"
36 #include "classfile/moduleEntry.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/debugInfo.hpp"
43 #include "code/dependencyContext.hpp"
44 #include "code/pcDesc.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/interpreter.hpp"
47 #include "interpreter/linkResolver.hpp"
48 #include "jvm.h"
49 #include "logging/log.hpp"
50 #include "logging/logStream.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "memory/resourceArea.hpp"
53 #include "memory/universe.hpp"
54 #include "oops/fieldInfo.hpp"
55 #include "oops/fieldStreams.inline.hpp"
56 #include "oops/instanceKlass.inline.hpp"
57 #include "oops/instanceMirrorKlass.hpp"
58 #include "oops/klass.hpp"
59 #include "oops/klass.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/objArrayKlass.hpp"
62 #include "oops/objArrayOop.inline.hpp"
63 #include "oops/oopCast.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/symbol.hpp"
66 #include "oops/recordComponent.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiExport.hpp"
69 #include "prims/methodHandles.hpp"
70 #include "prims/resolvedMethodTable.hpp"
71 #include "runtime/continuationEntry.inline.hpp"
72 #include "runtime/continuationJavaClasses.inline.hpp"
73 #include "runtime/fieldDescriptor.inline.hpp"
74 #include "runtime/frame.inline.hpp"
75 #include "runtime/handles.inline.hpp"
76 #include "runtime/handshake.hpp"
77 #include "runtime/init.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/java.hpp"
80 #include "runtime/javaCalls.hpp"
81 #include "runtime/javaThread.hpp"
82 #include "runtime/jniHandles.inline.hpp"
83 #include "runtime/reflectionUtils.hpp"
84 #include "runtime/safepoint.hpp"
85 #include "runtime/safepointVerifiers.hpp"
86 #include "runtime/threadSMR.hpp"
87 #include "runtime/vframe.inline.hpp"
88 #include "runtime/vm_version.hpp"
89 #include "utilities/align.hpp"
90 #include "utilities/globalDefinitions.hpp"
91 #include "utilities/growableArray.hpp"
92 #include "utilities/preserveException.hpp"
93 #include "utilities/utf8.hpp"
94 #if INCLUDE_JVMCI
95 #include "jvmci/jvmciJavaClasses.hpp"
96 #endif
97
98 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
99 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
100
101 InjectedField JavaClasses::_injected_fields[] = {
102 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
103 };
104
105 // Register native methods of Object
106 void java_lang_Object::register_natives(TRAPS) {
107 InstanceKlass* obj = vmClasses::Object_klass();
108 Method::register_native(obj, vmSymbols::hashCode_name(),
109 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
110 Method::register_native(obj, vmSymbols::wait_name(),
111 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
112 Method::register_native(obj, vmSymbols::notify_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
114 Method::register_native(obj, vmSymbols::notifyAll_name(),
115 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
116 Method::register_native(obj, vmSymbols::clone_name(),
117 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
118 }
119
120 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
121 return _injected_fields[(int)id].compute_offset();
122 }
123
124 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
125 *field_count = 0;
126
127 vmSymbolID sid = vmSymbols::find_sid(class_name);
128 if (sid == vmSymbolID::NO_SID) {
129 // Only well known classes can inject fields
130 return nullptr;
131 }
132
133 int count = 0;
134 int start = -1;
135
136 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
137 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
138 count++; \
139 if (start == -1) { \
140 start = (int)InjectedFieldID::klass##_##name##_enum; \
141 } \
142 }
143 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
144 #undef LOOKUP_INJECTED_FIELD
145
146 if (start != -1) {
147 *field_count = count;
148 return _injected_fields + start;
149 }
150 return nullptr;
151 }
152
153
154 // Helpful routine for computing field offsets at run time rather than hardcoding them
155 // Finds local fields only, including static fields. Static field offsets are from the
156 // beginning of the mirror.
157 void JavaClasses::compute_offset(int &dest_offset,
158 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
159 bool is_static) {
160 fieldDescriptor fd;
161 if (ik == nullptr) {
162 ResourceMark rm;
163 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
164 vm_exit_during_initialization("Invalid layout of well-known class");
165 }
166
167 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
168 ResourceMark rm;
169 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
170 name_symbol->as_C_string(), signature_symbol->as_C_string());
171 #ifndef PRODUCT
172 // Prints all fields and offsets
173 Log(class) lt;
174 LogStream ls(lt.error());
175 ik->print_on(&ls);
176 #endif //PRODUCT
177 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
178 }
179 dest_offset = fd.offset();
180 }
181
182 // Overloading to pass name as a string.
183 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
184 const char* name_string, Symbol* signature_symbol,
185 bool is_static) {
186 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
187 if (name == nullptr) {
188 ResourceMark rm;
189 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
190 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
191 }
192 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
193 }
194
195 // java_lang_String
196
197 int java_lang_String::_value_offset;
198 int java_lang_String::_hash_offset;
199 int java_lang_String::_hashIsZero_offset;
200 int java_lang_String::_coder_offset;
201 int java_lang_String::_flags_offset;
202
203 bool java_lang_String::_initialized;
204
205
206 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
207 uint8_t* addr = flags_addr(java_string);
208 uint8_t value = Atomic::load(addr);
209 while ((value & flag_mask) == 0) {
210 uint8_t old_value = value;
211 value |= flag_mask;
212 value = Atomic::cmpxchg(addr, old_value, value);
213 if (value == old_value) return false; // Flag bit changed from 0 to 1.
214 }
215 return true; // Flag bit is already 1.
216 }
217
218 #define STRING_FIELDS_DO(macro) \
219 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
220 macro(_hash_offset, k, "hash", int_signature, false); \
221 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
222 macro(_coder_offset, k, "coder", byte_signature, false);
223
224 void java_lang_String::compute_offsets() {
225 if (_initialized) {
226 return;
227 }
228
229 InstanceKlass* k = vmClasses::String_klass();
230 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
231 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
232
233 _initialized = true;
234 }
235
236 #if INCLUDE_CDS
237 void java_lang_String::serialize_offsets(SerializeClosure* f) {
238 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
239 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
240 f->do_bool(&_initialized);
241 }
242 #endif
243
244 class CompactStringsFixup : public FieldClosure {
245 private:
246 bool _value;
247
248 public:
249 CompactStringsFixup(bool value) : _value(value) {}
250
251 void do_field(fieldDescriptor* fd) {
252 if (fd->name() == vmSymbols::compact_strings_name()) {
253 oop mirror = fd->field_holder()->java_mirror();
254 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
255 assert(mirror != nullptr, "String must have mirror already");
256 mirror->bool_field_put(fd->offset(), _value);
257 }
258 }
259 };
260
261 void java_lang_String::set_compact_strings(bool value) {
262 CompactStringsFixup fix(value);
263 vmClasses::String_klass()->do_local_static_fields(&fix);
264 }
265
266 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
267 assert(_initialized, "Must be initialized");
268 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
269
270 // Create the String object first, so there's a chance that the String
271 // and the char array it points to end up in the same cache line.
272 oop obj;
273 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
274
275 // Create the char array. The String object must be handlized here
276 // because GC can happen as a result of the allocation attempt.
277 Handle h_obj(THREAD, obj);
278 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
279 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
280
281 // Point the String at the char array
282 obj = h_obj();
283 set_value(obj, buffer);
284 // No need to zero the offset, allocation zero'ed the entire String object
285 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
286 return h_obj;
287 }
288
289 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
290 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
291 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
292 typeArrayOop buffer = value(h_obj());
293 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
294 if (is_latin1) {
295 for (int index = 0; index < length; index++) {
296 buffer->byte_at_put(index, (jbyte)unicode[index]);
297 }
298 } else {
299 for (int index = 0; index < length; index++) {
300 buffer->char_at_put(index, unicode[index]);
301 }
302 }
303
304 #ifdef ASSERT
305 {
306 ResourceMark rm;
307 char* expected = UNICODE::as_utf8(unicode, length);
308 char* actual = as_utf8_string(h_obj());
309 if (strcmp(expected, actual) != 0) {
310 fatal("Unicode conversion failure: %s --> %s", expected, actual);
311 }
312 }
313 #endif
314
315 return h_obj;
316 }
317
318 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
319 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
320 return h_obj();
321 }
322
323 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
324 if (utf8_str == nullptr) {
325 return Handle();
326 }
327 bool has_multibyte, is_latin1;
328 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
329 if (!CompactStrings) {
330 has_multibyte = true;
331 is_latin1 = false;
332 }
333
334 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
335 if (length > 0) {
336 if (!has_multibyte) {
337 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
338 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
339 } else if (is_latin1) {
340 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
341 } else {
342 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
343 }
344 }
345
346 #ifdef ASSERT
347 // This check is too strict when the input string is not a valid UTF8.
348 // For example, it may be created with arbitrary content via jni_NewStringUTF.
349 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
350 ResourceMark rm;
351 const char* expected = utf8_str;
352 char* actual = as_utf8_string(h_obj());
353 if (strcmp(expected, actual) != 0) {
354 fatal("String conversion failure: %s --> %s", expected, actual);
355 }
356 }
357 #endif
358
359 return h_obj;
360 }
361
362 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
363 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
364 return h_obj();
365 }
366
367 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
368 const char* utf8_str = (char*)symbol->bytes();
369 int utf8_len = symbol->utf8_length();
370
371 bool has_multibyte, is_latin1;
372 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
373 if (!CompactStrings) {
374 has_multibyte = true;
375 is_latin1 = false;
376 }
377
378 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
379 if (length > 0) {
380 if (!has_multibyte) {
381 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
382 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
383 } else if (is_latin1) {
384 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
385 } else {
386 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
387 }
388 }
389
390 #ifdef ASSERT
391 {
392 ResourceMark rm;
393 const char* expected = symbol->as_utf8();
394 char* actual = as_utf8_string(h_obj());
395 if (strncmp(expected, actual, utf8_len) != 0) {
396 fatal("Symbol conversion failure: %s --> %s", expected, actual);
397 }
398 }
399 #endif
400
401 return h_obj;
402 }
403
404 // Converts a C string to a Java String based on current encoding
405 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
406 assert(str != nullptr, "bad arguments");
407
408 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
409 static to_java_string_fn_t _to_java_string_fn = nullptr;
410
411 if (_to_java_string_fn == nullptr) {
412 void *lib_handle = os::native_java_library();
413 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
414 #if defined(_WIN32) && !defined(_WIN64)
415 if (_to_java_string_fn == nullptr) {
416 // On 32 bit Windows, also try __stdcall decorated name
417 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
418 }
419 #endif
420 if (_to_java_string_fn == nullptr) {
421 fatal("JNU_NewStringPlatform missing");
422 }
423 }
424
425 jstring js = nullptr;
426 {
427 JavaThread* thread = THREAD;
428 HandleMark hm(thread);
429 ThreadToNativeFromVM ttn(thread);
430 js = (_to_java_string_fn)(thread->jni_environment(), str);
431 }
432
433 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
434 JNIHandles::destroy_local(js); // destroy local JNIHandle.
435 return native_platform_string;
436 }
437
438 // Converts a Java String to a native C string that can be used for
439 // native OS calls.
440 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
441 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
442 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
443
444 if (_to_platform_string_fn == nullptr) {
445 void *lib_handle = os::native_java_library();
446 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
447 if (_to_platform_string_fn == nullptr) {
448 fatal("GetStringPlatformChars missing");
449 }
450 }
451
452 char *native_platform_string;
453 jstring js;
454 { JavaThread* thread = THREAD;
455 js = (jstring) JNIHandles::make_local(thread, java_string());
456 HandleMark hm(thread);
457 ThreadToNativeFromVM ttn(thread);
458 JNIEnv *env = thread->jni_environment();
459 bool is_copy;
460 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
461 assert(is_copy == JNI_TRUE, "is_copy value changed");
462 }
463
464 // Uses a store barrier and therefore needs to be in vm state
465 JNIHandles::destroy_local(js);
466
467 return native_platform_string;
468 }
469
470 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
471 ResourceMark rm(THREAD);
472 return create_from_str(java_name->as_klass_external_name(), THREAD);
473 }
474
475 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
476 jchar* result = as_unicode_string_or_null(java_string, length);
477 if (result == nullptr) {
478 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
479 }
480 return result;
481 }
482
483 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
484 typeArrayOop value = java_lang_String::value(java_string);
485 length = java_lang_String::length(java_string, value);
486 bool is_latin1 = java_lang_String::is_latin1(java_string);
487
488 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
489 if (result != nullptr) {
490 if (!is_latin1) {
491 for (int index = 0; index < length; index++) {
492 result[index] = value->char_at(index);
493 }
494 } else {
495 for (int index = 0; index < length; index++) {
496 result[index] = ((jchar) value->byte_at(index)) & 0xff;
497 }
498 }
499 }
500 return result;
501 }
502
503 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
504 // The hash and hashIsZero fields are subject to a benign data race,
505 // making it crucial to ensure that any observable result of the
506 // calculation in this method stays correct under any possible read of
507 // these fields. Necessary restrictions to allow this to be correct
508 // without explicit memory fences or similar concurrency primitives is
509 // that we can ever only write to one of these two fields for a given
510 // String instance, and that the computation is idempotent and derived
511 // from immutable state
512 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
513 if (java_lang_String::hash_is_set(java_string)) {
514 return java_string->int_field(_hash_offset);
515 }
516
517 typeArrayOop value = java_lang_String::value(java_string);
518 int length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 unsigned int hash = 0;
522 if (length > 0) {
523 if (is_latin1) {
524 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
525 } else {
526 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
527 }
528 }
529
530 if (update) {
531 if (hash != 0) {
532 java_string->int_field_put(_hash_offset, hash);
533 } else {
534 java_string->bool_field_put(_hashIsZero_offset, true);
535 }
536 }
537 return hash;
538 }
539
540 unsigned int java_lang_String::hash_code(oop java_string) {
541 return hash_code_impl(java_string, /*update=*/true);
542 }
543
544 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
545 return hash_code_impl(java_string, /*update=*/false);
546 }
547
548
549 char* java_lang_String::as_quoted_ascii(oop java_string) {
550 typeArrayOop value = java_lang_String::value(java_string);
551 int length = java_lang_String::length(java_string, value);
552 bool is_latin1 = java_lang_String::is_latin1(java_string);
553
554 if (length == 0) return nullptr;
555
556 char* result;
557 int result_length;
558 if (!is_latin1) {
559 jchar* base = value->char_at_addr(0);
560 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
561 result = NEW_RESOURCE_ARRAY(char, result_length);
562 UNICODE::as_quoted_ascii(base, length, result, result_length);
563 } else {
564 jbyte* base = value->byte_at_addr(0);
565 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
566 result = NEW_RESOURCE_ARRAY(char, result_length);
567 UNICODE::as_quoted_ascii(base, length, result, result_length);
568 }
569 assert(result_length >= length + 1, "must not be shorter");
570 assert(result_length == (int)strlen(result) + 1, "must match");
571 return result;
572 }
573
574 Symbol* java_lang_String::as_symbol(oop java_string) {
575 typeArrayOop value = java_lang_String::value(java_string);
576 int length = java_lang_String::length(java_string, value);
577 bool is_latin1 = java_lang_String::is_latin1(java_string);
578 if (!is_latin1) {
579 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
580 Symbol* sym = SymbolTable::new_symbol(base, length);
581 return sym;
582 } else {
583 ResourceMark rm;
584 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
585 const char* base = UNICODE::as_utf8(position, length);
586 Symbol* sym = SymbolTable::new_symbol(base, length);
587 return sym;
588 }
589 }
590
591 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
592 typeArrayOop value = java_lang_String::value(java_string);
593 int length = java_lang_String::length(java_string, value);
594 bool is_latin1 = java_lang_String::is_latin1(java_string);
595 if (!is_latin1) {
596 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
597 return SymbolTable::probe_unicode(base, length);
598 } else {
599 ResourceMark rm;
600 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
601 const char* base = UNICODE::as_utf8(position, length);
602 return SymbolTable::probe(base, length);
603 }
604 }
605
606 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
607 assert(value_equals(value, java_lang_String::value(java_string)),
608 "value must be same as java_lang_String::value(java_string)");
609 int length = java_lang_String::length(java_string, value);
610 if (length == 0) {
611 return 0;
612 }
613 if (!java_lang_String::is_latin1(java_string)) {
614 return UNICODE::utf8_length(value->char_at_addr(0), length);
615 } else {
616 return UNICODE::utf8_length(value->byte_at_addr(0), length);
617 }
618 }
619
620 int java_lang_String::utf8_length(oop java_string) {
621 typeArrayOop value = java_lang_String::value(java_string);
622 return utf8_length(java_string, value);
623 }
624
625 char* java_lang_String::as_utf8_string(oop java_string) {
626 int length;
627 return as_utf8_string(java_string, length);
628 }
629
630 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
631 typeArrayOop value = java_lang_String::value(java_string);
632 length = java_lang_String::length(java_string, value);
633 bool is_latin1 = java_lang_String::is_latin1(java_string);
634 if (!is_latin1) {
635 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
636 return UNICODE::as_utf8(position, length);
637 } else {
638 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
639 return UNICODE::as_utf8(position, length);
640 }
641 }
642
643 // Uses a provided buffer if it's sufficiently large, otherwise allocates
644 // a resource array to fit
645 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
646 typeArrayOop value = java_lang_String::value(java_string);
647 int len = java_lang_String::length(java_string, value);
648 bool is_latin1 = java_lang_String::is_latin1(java_string);
649 if (!is_latin1) {
650 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
651 utf8_len = UNICODE::utf8_length(position, len);
652 if (utf8_len >= buflen) {
653 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
654 }
655 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
656 } else {
657 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
658 utf8_len = UNICODE::utf8_length(position, len);
659 if (utf8_len >= buflen) {
660 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
661 }
662 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
663 }
664 }
665
666 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
667 assert(value_equals(value, java_lang_String::value(java_string)),
668 "value must be same as java_lang_String::value(java_string)");
669 int length = java_lang_String::length(java_string, value);
670 bool is_latin1 = java_lang_String::is_latin1(java_string);
671 if (!is_latin1) {
672 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
673 return UNICODE::as_utf8(position, length, buf, buflen);
674 } else {
675 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
676 return UNICODE::as_utf8(position, length, buf, buflen);
677 }
678 }
679
680 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
681 typeArrayOop value = java_lang_String::value(java_string);
682 return as_utf8_string(java_string, value, buf, buflen);
683 }
684
685 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
686 typeArrayOop value = java_lang_String::value(java_string);
687 bool is_latin1 = java_lang_String::is_latin1(java_string);
688 assert(start + len <= java_lang_String::length(java_string), "just checking");
689 if (!is_latin1) {
690 jchar* position = value->char_at_addr(start);
691 return UNICODE::as_utf8(position, len);
692 } else {
693 jbyte* position = value->byte_at_addr(start);
694 return UNICODE::as_utf8(position, len);
695 }
696 }
697
698 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
699 assert(value_equals(value, java_lang_String::value(java_string)),
700 "value must be same as java_lang_String::value(java_string)");
701 assert(start + len <= java_lang_String::length(java_string), "just checking");
702 bool is_latin1 = java_lang_String::is_latin1(java_string);
703 if (!is_latin1) {
704 jchar* position = value->char_at_addr(start);
705 return UNICODE::as_utf8(position, len, buf, buflen);
706 } else {
707 jbyte* position = value->byte_at_addr(start);
708 return UNICODE::as_utf8(position, len, buf, buflen);
709 }
710 }
711
712 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
713 assert(java_string->klass() == vmClasses::String_klass(),
714 "must be java_string");
715 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
716 int length = java_lang_String::length(java_string, value);
717 if (length != len) {
718 return false;
719 }
720 bool is_latin1 = java_lang_String::is_latin1(java_string);
721 if (!is_latin1) {
722 for (int i = 0; i < len; i++) {
723 if (value->char_at(i) != chars[i]) {
724 return false;
725 }
726 }
727 } else {
728 for (int i = 0; i < len; i++) {
729 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
730 return false;
731 }
732 }
733 }
734 return true;
735 }
736
737 bool java_lang_String::equals(oop str1, oop str2) {
738 assert(str1->klass() == vmClasses::String_klass(),
739 "must be java String");
740 assert(str2->klass() == vmClasses::String_klass(),
741 "must be java String");
742 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
743 bool is_latin1 = java_lang_String::is_latin1(str1);
744 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
745 bool is_latin2 = java_lang_String::is_latin1(str2);
746
747 if (is_latin1 != is_latin2) {
748 // Strings with different coders are never equal.
749 return false;
750 }
751 return value_equals(value1, value2);
752 }
753
754 void java_lang_String::print(oop java_string, outputStream* st) {
755 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
756 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
757
758 if (value == nullptr) {
759 // This can happen if, e.g., printing a String
760 // object before its initializer has been called
761 st->print("nullptr");
762 return;
763 }
764
765 int length = java_lang_String::length(java_string, value);
766 bool is_latin1 = java_lang_String::is_latin1(java_string);
767
768 st->print("\"");
769 for (int index = 0; index < length; index++) {
770 jchar c = (!is_latin1) ? value->char_at(index) :
771 ((jchar) value->byte_at(index)) & 0xff;
772 if (c < ' ') {
773 st->print("\\x%02X", c); // print control characters e.g. \x0A
774 } else {
775 st->print("%c", c);
776 }
777 }
778 st->print("\"");
779 }
780
781 // java_lang_Class
782
783 int java_lang_Class::_klass_offset;
784 int java_lang_Class::_array_klass_offset;
785 int java_lang_Class::_oop_size_offset;
786 int java_lang_Class::_static_oop_field_count_offset;
787 int java_lang_Class::_class_loader_offset;
788 int java_lang_Class::_module_offset;
789 int java_lang_Class::_protection_domain_offset;
790 int java_lang_Class::_component_mirror_offset;
791 int java_lang_Class::_signers_offset;
792 int java_lang_Class::_name_offset;
793 int java_lang_Class::_source_file_offset;
794 int java_lang_Class::_classData_offset;
795 int java_lang_Class::_classRedefinedCount_offset;
796 int java_lang_Class::_reflectionData_offset;
797
798 bool java_lang_Class::_offsets_computed = false;
799 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
800 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
801
802 #ifdef ASSERT
803 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
804 assert(fd->has_initial_value(), "caller should have checked this");
805 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
806 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
807 }
808 #endif
809
810 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
811 DEBUG_ONLY(assert_valid_static_string_field(fd);)
812 oop string = fd->string_initial_value(CHECK);
813 mirror()->obj_field_put(fd->offset(), string);
814 }
815
816 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
817 assert(fd->has_initial_value(), "caller should have checked this");
818 BasicType t = fd->field_type();
819 switch (t) {
820 case T_BYTE:
821 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
822 break;
823 case T_BOOLEAN:
824 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
825 break;
826 case T_CHAR:
827 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
828 break;
829 case T_SHORT:
830 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
831 break;
832 case T_INT:
833 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
834 break;
835 case T_FLOAT:
836 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
837 break;
838 case T_DOUBLE:
839 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
840 break;
841 case T_LONG:
842 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
843 break;
844 default:
845 // Illegal ConstantValue attribute in class file should have been
846 // caught during classfile parsing.
847 ShouldNotReachHere();
848 }
849 }
850
851 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
852 assert(mirror.not_null() && fd->is_static(), "just checking");
853 if (fd->has_initial_value()) {
854 if (fd->field_type() != T_OBJECT) {
855 initialize_static_primitive_field(fd, mirror);
856 } else {
857 initialize_static_string_field(fd, mirror, CHECK);
858 }
859 }
860 }
861
862 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
863 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
864
865 // If the offset was read from the shared archive, it was fixed up already
866 if (!k->is_shared()) {
867 if (k->is_instance_klass()) {
868 // During bootstrap, java.lang.Class wasn't loaded so static field
869 // offsets were computed without the size added it. Go back and
870 // update all the static field offsets to included the size.
871
872 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
873 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
874 // static fields offsets are updated in this array before reencoding everything into
875 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
876
877 int java_fields;
878 int injected_fields;
879 InstanceKlass* ik = InstanceKlass::cast(k);
880 GrowableArray<FieldInfo>* fields =
881 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
882 &java_fields, &injected_fields);
883 for (int i = 0; i < fields->length(); i++) {
884 FieldInfo* fi = fields->adr_at(i);
885 if (fi->access_flags().is_static()) {
886 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
887 }
888 }
889 Array<u1>* old_stream = ik->fieldinfo_stream();
890 assert(fields->length() == (java_fields + injected_fields), "Must be");
891 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
892 ik->set_fieldinfo_stream(new_fis);
893 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
894 }
895 }
896
897 if (k->is_shared() && k->has_archived_mirror_index()) {
898 if (ArchiveHeapLoader::is_in_use()) {
899 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
900 assert(present, "Missing archived mirror for %s", k->external_name());
901 return;
902 } else {
903 k->clear_java_mirror_handle();
904 k->clear_archived_mirror_index();
905 }
906 }
907 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
908 }
909
910 void java_lang_Class::initialize_mirror_fields(Klass* k,
911 Handle mirror,
912 Handle protection_domain,
913 Handle classData,
914 TRAPS) {
915 // Set protection domain also
916 set_protection_domain(mirror(), protection_domain());
917
918 // Initialize static fields
919 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
920
921 // Set classData
922 set_class_data(mirror(), classData());
923 }
924
925 // Set the java.lang.Module module field in the java_lang_Class mirror
926 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
927 if (module.is_null()) {
928 // During startup, the module may be null only if java.base has not been defined yet.
929 // Put the class on the fixup_module_list to patch later when the java.lang.Module
930 // for java.base is known. But note that since we captured the null module another
931 // thread may have completed that initialization.
932
933 bool javabase_was_defined = false;
934 {
935 MutexLocker m1(current, Module_lock);
936 // Keep list of classes needing java.base module fixup
937 if (!ModuleEntryTable::javabase_defined()) {
938 assert(k->java_mirror() != nullptr, "Class's mirror is null");
939 k->class_loader_data()->inc_keep_alive();
940 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
941 fixup_module_field_list()->push(k);
942 } else {
943 javabase_was_defined = true;
944 }
945 }
946
947 // If java.base was already defined then patch this particular class with java.base.
948 if (javabase_was_defined) {
949 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
950 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
951 "Setting class module field, " JAVA_BASE_NAME " should be defined");
952 Handle javabase_handle(current, javabase_entry->module());
953 set_module(mirror(), javabase_handle());
954 }
955 } else {
956 assert(Universe::is_module_initialized() ||
957 (ModuleEntryTable::javabase_defined() &&
958 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
959 "Incorrect java.lang.Module specification while creating mirror");
960 set_module(mirror(), module());
961 }
962 }
963
964 // Statically allocate fixup lists because they always get created.
965 void java_lang_Class::allocate_fixup_lists() {
966 GrowableArray<Klass*>* mirror_list =
967 new (mtClass) GrowableArray<Klass*>(40, mtClass);
968 set_fixup_mirror_list(mirror_list);
969
970 GrowableArray<Klass*>* module_list =
971 new (mtModule) GrowableArray<Klass*>(500, mtModule);
972 set_fixup_module_field_list(module_list);
973 }
974
975 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
976 Handle& mirror, Handle& comp_mirror, TRAPS) {
977 // Allocate mirror (java.lang.Class instance)
978 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
979 mirror = Handle(THREAD, mirror_oop);
980
981 // Setup indirection from mirror->klass
982 set_klass(mirror(), k);
983
984 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
985 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
986
987 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
988
989 // It might also have a component mirror. This mirror must already exist.
990 if (k->is_array_klass()) {
991 if (k->is_typeArray_klass()) {
992 BasicType type = TypeArrayKlass::cast(k)->element_type();
993 if (is_scratch) {
994 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
995 } else {
996 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
997 }
998 } else {
999 assert(k->is_objArray_klass(), "Must be");
1000 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1001 assert(element_klass != nullptr, "Must have an element klass");
1002 if (is_scratch) {
1003 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1004 } else {
1005 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1006 }
1007 }
1008 assert(comp_mirror() != nullptr, "must have a mirror");
1009
1010 // Two-way link between the array klass and its component mirror:
1011 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1012 set_component_mirror(mirror(), comp_mirror());
1013 // See below for ordering dependencies between field array_klass in component mirror
1014 // and java_mirror in this klass.
1015 } else {
1016 assert(k->is_instance_klass(), "Must be");
1017
1018 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1019 if (HAS_PENDING_EXCEPTION) {
1020 // If any of the fields throws an exception like OOM remove the klass field
1021 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1022 // This mirror looks like a primitive type, which logically it is because it
1023 // it represents no class.
1024 set_klass(mirror(), nullptr);
1025 return;
1026 }
1027 }
1028 }
1029
1030 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1031 Handle module, Handle protection_domain,
1032 Handle classData, TRAPS) {
1033 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1034 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1035
1036 // Use this moment of initialization to cache modifier_flags also,
1037 // to support Class.getModifiers(). Instance classes recalculate
1038 // the cached flags after the class file is parsed, but before the
1039 // class is put into the system dictionary.
1040 int computed_modifiers = k->compute_modifier_flags();
1041 k->set_modifier_flags(computed_modifiers);
1042 // Class_klass has to be loaded because it is used to allocate
1043 // the mirror.
1044 if (vmClasses::Class_klass_loaded()) {
1045 Handle mirror;
1046 Handle comp_mirror;
1047
1048 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1049
1050 // set the classLoader field in the java_lang_Class instance
1051 assert(class_loader() == k->class_loader(), "should be same");
1052 set_class_loader(mirror(), class_loader());
1053
1054 // Setup indirection from klass->mirror
1055 // after any exceptions can happen during allocations.
1056 k->set_java_mirror(mirror);
1057
1058 // Set the module field in the java_lang_Class instance. This must be done
1059 // after the mirror is set.
1060 set_mirror_module_field(THREAD, k, mirror, module);
1061
1062 if (comp_mirror() != nullptr) {
1063 // Set after k->java_mirror() is published, because compiled code running
1064 // concurrently doesn't expect a k to have a null java_mirror.
1065 release_set_array_klass(comp_mirror(), k);
1066 }
1067 if (CDSConfig::is_dumping_heap()) {
1068 create_scratch_mirror(k, CHECK);
1069 }
1070 } else {
1071 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1072 fixup_mirror_list()->push(k);
1073 }
1074 }
1075
1076 #if INCLUDE_CDS_JAVA_HEAP
1077 // The "scratch mirror" stores the states of the mirror object that can be
1078 // decided at dump time (such as the initial values of the static fields, the
1079 // component mirror, etc). At runtime, more information is added to it by
1080 // java_lang_Class::restore_archived_mirror().
1081 //
1082 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1083 // produces the same result as /*runtime*/create_mirror().
1084 //
1085 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1086 // latter may contain dumptime-specific information that cannot be archived
1087 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1088 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1089 if (k->class_loader() != nullptr &&
1090 k->class_loader() != SystemDictionary::java_platform_loader() &&
1091 k->class_loader() != SystemDictionary::java_system_loader()) {
1092 // We only archive the mirrors of classes loaded by the built-in loaders
1093 return;
1094 }
1095
1096 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1097 Handle mirror;
1098 Handle comp_mirror;
1099 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1100
1101 if (comp_mirror() != nullptr) {
1102 release_set_array_klass(comp_mirror(), k);
1103 }
1104
1105 HeapShared::set_scratch_java_mirror(k, mirror());
1106 }
1107
1108 // Returns true if the mirror is updated, false if no archived mirror
1109 // data is present. After the archived mirror object is restored, the
1110 // shared klass' _has_raw_archived_mirror flag is cleared.
1111 bool java_lang_Class::restore_archived_mirror(Klass *k,
1112 Handle class_loader, Handle module,
1113 Handle protection_domain, TRAPS) {
1114 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1115 // see more details in vmClasses::resolve_all().
1116 if (!vmClasses::Class_klass_loaded()) {
1117 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1118 fixup_mirror_list()->push(k);
1119 return true;
1120 }
1121
1122 oop m = k->archived_java_mirror();
1123 assert(m != nullptr, "must have stored non-null archived mirror");
1124
1125 // Sanity: clear it now to prevent re-initialization if any of the following fails
1126 k->clear_archived_mirror_index();
1127
1128 // mirror is archived, restore
1129 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1130 assert(as_Klass(m) == k, "must be");
1131 Handle mirror(THREAD, m);
1132
1133 if (!k->is_array_klass()) {
1134 // - local static final fields with initial values were initialized at dump time
1135
1136 if (protection_domain.not_null()) {
1137 set_protection_domain(mirror(), protection_domain());
1138 }
1139 }
1140
1141 assert(class_loader() == k->class_loader(), "should be same");
1142 if (class_loader.not_null()) {
1143 set_class_loader(mirror(), class_loader());
1144 }
1145
1146 k->set_java_mirror(mirror);
1147
1148 set_mirror_module_field(THREAD, k, mirror, module);
1149
1150 if (log_is_enabled(Trace, cds, heap, mirror)) {
1151 ResourceMark rm(THREAD);
1152 log_trace(cds, heap, mirror)(
1153 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1154 }
1155
1156 return true;
1157 }
1158 #endif // INCLUDE_CDS_JAVA_HEAP
1159
1160 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1161 assert(_module_offset != 0, "must have been computed already");
1162 set_module(k->java_mirror(), module());
1163 }
1164
1165 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1166 assert(_oop_size_offset != 0, "must be set");
1167 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1168 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1169 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1170 }
1171
1172 int java_lang_Class::static_oop_field_count(oop java_class) {
1173 assert(_static_oop_field_count_offset != 0, "must be set");
1174 return java_class->int_field(_static_oop_field_count_offset);
1175 }
1176
1177 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1178 assert(_static_oop_field_count_offset != 0, "must be set");
1179 java_class->int_field_put(_static_oop_field_count_offset, size);
1180 }
1181
1182 oop java_lang_Class::protection_domain(oop java_class) {
1183 assert(_protection_domain_offset != 0, "must be set");
1184 return java_class->obj_field(_protection_domain_offset);
1185 }
1186 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1187 assert(_protection_domain_offset != 0, "must be set");
1188 java_class->obj_field_put(_protection_domain_offset, pd);
1189 }
1190
1191 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1192 assert(_component_mirror_offset != 0, "must be set");
1193 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1194 }
1195 oop java_lang_Class::component_mirror(oop java_class) {
1196 assert(_component_mirror_offset != 0, "must be set");
1197 return java_class->obj_field(_component_mirror_offset);
1198 }
1199
1200 objArrayOop java_lang_Class::signers(oop java_class) {
1201 assert(_signers_offset != 0, "must be set");
1202 return (objArrayOop)java_class->obj_field(_signers_offset);
1203 }
1204 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1205 assert(_signers_offset != 0, "must be set");
1206 java_class->obj_field_put(_signers_offset, signers);
1207 }
1208
1209 oop java_lang_Class::class_data(oop java_class) {
1210 assert(_classData_offset != 0, "must be set");
1211 return java_class->obj_field(_classData_offset);
1212 }
1213 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1214 assert(_classData_offset != 0, "must be set");
1215 java_class->obj_field_put(_classData_offset, class_data);
1216 }
1217
1218 oop java_lang_Class::reflection_data(oop java_class) {
1219 assert(_reflectionData_offset != 0, "must be set");
1220 return java_class->obj_field(_reflectionData_offset);
1221 }
1222
1223 bool java_lang_Class::has_reflection_data(oop java_class) {
1224 return (java_lang_Class::reflection_data(java_class) != nullptr);
1225 }
1226
1227 void java_lang_Class::set_reflection_data(oop java_class, oop reflection_data) {
1228 assert(_reflectionData_offset != 0, "must be set");
1229 java_class->obj_field_put(_reflectionData_offset, reflection_data);
1230 }
1231
1232 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1233 assert(_class_loader_offset != 0, "offsets should have been initialized");
1234 java_class->obj_field_put(_class_loader_offset, loader);
1235 }
1236
1237 oop java_lang_Class::class_loader(oop java_class) {
1238 assert(_class_loader_offset != 0, "must be set");
1239 return java_class->obj_field(_class_loader_offset);
1240 }
1241
1242 oop java_lang_Class::module(oop java_class) {
1243 assert(_module_offset != 0, "must be set");
1244 return java_class->obj_field(_module_offset);
1245 }
1246
1247 void java_lang_Class::set_module(oop java_class, oop module) {
1248 assert(_module_offset != 0, "must be set");
1249 java_class->obj_field_put(_module_offset, module);
1250 }
1251
1252 oop java_lang_Class::name(Handle java_class, TRAPS) {
1253 assert(_name_offset != 0, "must be set");
1254 oop o = java_class->obj_field(_name_offset);
1255 if (o == nullptr) {
1256 o = StringTable::intern(as_external_name(java_class()), THREAD);
1257 java_class->obj_field_put(_name_offset, o);
1258 }
1259 return o;
1260 }
1261
1262 oop java_lang_Class::source_file(oop java_class) {
1263 assert(_source_file_offset != 0, "must be set");
1264 return java_class->obj_field(_source_file_offset);
1265 }
1266
1267 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1268 assert(_source_file_offset != 0, "must be set");
1269 java_class->obj_field_put(_source_file_offset, source_file);
1270 }
1271
1272 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1273 // This should be improved by adding a field at the Java level or by
1274 // introducing a new VM klass (see comment in ClassFileParser)
1275 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1276 if (type != T_VOID) {
1277 Klass* aklass = Universe::typeArrayKlass(type);
1278 assert(aklass != nullptr, "correct bootstrap");
1279 release_set_array_klass(java_class, aklass);
1280 }
1281 #ifdef ASSERT
1282 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1283 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1284 #endif
1285 return java_class;
1286 }
1287
1288 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1289 assert(is_instance(java_class), "must be a Class object");
1290 java_class->metadata_field_put(_klass_offset, klass);
1291 }
1292
1293
1294 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1295 assert(is_instance(java_class), "must be a Class object");
1296 Symbol* name = nullptr;
1297 bool is_instance = false;
1298 if (is_primitive(java_class)) {
1299 name = vmSymbols::type_signature(primitive_type(java_class));
1300 } else {
1301 Klass* k = as_Klass(java_class);
1302 is_instance = k->is_instance_klass();
1303 name = k->name();
1304 }
1305 if (name == nullptr) {
1306 st->print("<null>");
1307 return;
1308 }
1309 if (is_instance) st->print("L");
1310 st->write((char*) name->base(), (int) name->utf8_length());
1311 if (is_instance) st->print(";");
1312 }
1313
1314 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1315 assert(is_instance(java_class), "must be a Class object");
1316 Symbol* name;
1317 if (is_primitive(java_class)) {
1318 name = vmSymbols::type_signature(primitive_type(java_class));
1319 // Because this can create a new symbol, the caller has to decrement
1320 // the refcount, so make adjustment here and below for symbols returned
1321 // that are not created or incremented due to a successful lookup.
1322 name->increment_refcount();
1323 } else {
1324 Klass* k = as_Klass(java_class);
1325 if (!k->is_instance_klass()) {
1326 name = k->name();
1327 name->increment_refcount();
1328 } else {
1329 ResourceMark rm;
1330 const char* sigstr = k->signature_name();
1331 int siglen = (int) strlen(sigstr);
1332 if (!intern_if_not_found) {
1333 name = SymbolTable::probe(sigstr, siglen);
1334 } else {
1335 name = SymbolTable::new_symbol(sigstr, siglen);
1336 }
1337 }
1338 }
1339 return name;
1340 }
1341
1342 // Returns the Java name for this Java mirror (Resource allocated)
1343 // See Klass::external_name().
1344 // For primitive type Java mirrors, its type name is returned.
1345 const char* java_lang_Class::as_external_name(oop java_class) {
1346 assert(is_instance(java_class), "must be a Class object");
1347 const char* name = nullptr;
1348 if (is_primitive(java_class)) {
1349 name = type2name(primitive_type(java_class));
1350 } else {
1351 name = as_Klass(java_class)->external_name();
1352 }
1353 if (name == nullptr) {
1354 name = "<null>";
1355 }
1356 return name;
1357 }
1358
1359 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1360 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1361 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1362 return k;
1363 }
1364
1365
1366 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1367 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1368 java_class->release_metadata_field_put(_array_klass_offset, klass);
1369 }
1370
1371
1372 BasicType java_lang_Class::primitive_type(oop java_class) {
1373 assert(is_primitive(java_class), "just checking");
1374 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1375 BasicType type = T_VOID;
1376 if (ak != nullptr) {
1377 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1378 type = ArrayKlass::cast(ak)->element_type();
1379 } else {
1380 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1381 }
1382 #ifdef ASSERT
1383 if (CDSConfig::is_dumping_heap()) {
1384 oop mirror = Universe::java_mirror(type);
1385 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1386 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1387 } else {
1388 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1389 }
1390 #endif
1391 return type;
1392 }
1393
1394 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1395 assert(is_instance(java_class), "must be a Class object");
1396 if (is_primitive(java_class)) {
1397 if (reference_klass != nullptr)
1398 (*reference_klass) = nullptr;
1399 return primitive_type(java_class);
1400 } else {
1401 if (reference_klass != nullptr)
1402 (*reference_klass) = as_Klass(java_class);
1403 return T_OBJECT;
1404 }
1405 }
1406
1407
1408 oop java_lang_Class::primitive_mirror(BasicType t) {
1409 oop mirror = Universe::java_mirror(t);
1410 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1411 assert(is_primitive(mirror), "must be primitive");
1412 return mirror;
1413 }
1414
1415 #define CLASS_FIELDS_DO(macro) \
1416 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1417 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1418 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1419 macro(_module_offset, k, "module", module_signature, false); \
1420 macro(_name_offset, k, "name", string_signature, false); \
1421 macro(_classData_offset, k, "classData", object_signature, false); \
1422 macro(_reflectionData_offset, k, "reflectionData", class_ReflectionData_signature, false); \
1423
1424 void java_lang_Class::compute_offsets() {
1425 if (_offsets_computed) {
1426 return;
1427 }
1428
1429 _offsets_computed = true;
1430
1431 InstanceKlass* k = vmClasses::Class_klass();
1432 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1433
1434 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1435 }
1436
1437 #if INCLUDE_CDS
1438 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1439 f->do_bool(&_offsets_computed);
1440
1441 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1442
1443 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1444 }
1445 #endif
1446
1447 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1448 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1449 return the_class_mirror->int_field(_classRedefinedCount_offset);
1450 }
1451
1452 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1453 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1454 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1455 }
1456
1457
1458 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1459 // platform thread structure, and a eetop offset which was used for thread
1460 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1461 // merged, so in the HotSpot VM we just use the eetop field for the thread
1462 // instead of the privateInfo_offset.
1463 //
1464 // Note: The stackSize field is only present starting in 1.4.
1465
1466 int java_lang_Thread_FieldHolder::_group_offset;
1467 int java_lang_Thread_FieldHolder::_priority_offset;
1468 int java_lang_Thread_FieldHolder::_stackSize_offset;
1469 int java_lang_Thread_FieldHolder::_daemon_offset;
1470 int java_lang_Thread_FieldHolder::_thread_status_offset;
1471
1472 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1473 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1474 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1475 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1476 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1477 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1478
1479 void java_lang_Thread_FieldHolder::compute_offsets() {
1480 assert(_group_offset == 0, "offsets should be initialized only once");
1481
1482 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1483 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1484 }
1485
1486 #if INCLUDE_CDS
1487 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1488 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1489 }
1490 #endif
1491
1492 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1493 return holder->obj_field(_group_offset);
1494 }
1495
1496 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1497 return (ThreadPriority)holder->int_field(_priority_offset);
1498 }
1499
1500 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1501 holder->int_field_put(_priority_offset, priority);
1502 }
1503
1504 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1505 return holder->long_field(_stackSize_offset);
1506 }
1507
1508 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1509 return holder->bool_field(_daemon_offset) != 0;
1510 }
1511
1512 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1513 assert(val, "daemon status is never turned off");
1514 holder->bool_field_put(_daemon_offset, val);
1515 }
1516
1517 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1518 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1519 }
1520
1521 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1522 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1523 }
1524
1525
1526 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1527
1528 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1529 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1530
1531 void java_lang_Thread_Constants::compute_offsets() {
1532 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1533
1534 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1535 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1536 }
1537
1538 #if INCLUDE_CDS
1539 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1540 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1541 }
1542 #endif
1543
1544 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1545 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1546 oop base = k->static_field_base_raw();
1547 return base->obj_field(_static_VTHREAD_GROUP_offset);
1548 }
1549
1550
1551 int java_lang_Thread::_holder_offset;
1552 int java_lang_Thread::_name_offset;
1553 int java_lang_Thread::_contextClassLoader_offset;
1554 int java_lang_Thread::_inheritedAccessControlContext_offset;
1555 int java_lang_Thread::_eetop_offset;
1556 int java_lang_Thread::_jvmti_thread_state_offset;
1557 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1558 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1559 int java_lang_Thread::_interrupted_offset;
1560 int java_lang_Thread::_interruptLock_offset;
1561 int java_lang_Thread::_tid_offset;
1562 int java_lang_Thread::_continuation_offset;
1563 int java_lang_Thread::_park_blocker_offset;
1564 int java_lang_Thread::_scopedValueBindings_offset;
1565 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1566
1567 #define THREAD_FIELDS_DO(macro) \
1568 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1569 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1570 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1571 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1572 macro(_eetop_offset, k, "eetop", long_signature, false); \
1573 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1574 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1575 macro(_tid_offset, k, "tid", long_signature, false); \
1576 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1577 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1578 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1579
1580 void java_lang_Thread::compute_offsets() {
1581 assert(_holder_offset == 0, "offsets should be initialized only once");
1582
1583 InstanceKlass* k = vmClasses::Thread_klass();
1584 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1585 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1586 }
1587
1588 #if INCLUDE_CDS
1589 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1590 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1591 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1592 }
1593 #endif
1594
1595 JavaThread* java_lang_Thread::thread(oop java_thread) {
1596 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1597 }
1598
1599 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1600 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1601 }
1602
1603 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1604 java_thread->address_field_put(_eetop_offset, (address)thread);
1605 }
1606
1607 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1608 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1609 }
1610
1611 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1612 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1613 }
1614
1615 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1616 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1617 }
1618
1619 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1620 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1621 }
1622
1623 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1624 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1625 int val = VTMS_transition_disable_count(java_thread);
1626 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1627 }
1628
1629 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1630 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1631 int val = VTMS_transition_disable_count(java_thread);
1632 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1633 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1634 }
1635
1636 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1637 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1638 }
1639
1640 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1641 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1642 }
1643
1644 int java_lang_Thread::is_in_VTMS_transition_offset() {
1645 return _jvmti_is_in_VTMS_transition_offset;
1646 }
1647
1648 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1649 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1650 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1651 }
1652
1653 oop java_lang_Thread::holder(oop java_thread) {
1654 // Note: may return null if the thread is still attaching
1655 return java_thread->obj_field(_holder_offset);
1656 }
1657 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1658 return java_thread->obj_field(_interruptLock_offset);
1659 }
1660
1661 bool java_lang_Thread::interrupted(oop java_thread) {
1662 // Make sure the caller can safely access oops.
1663 assert(Thread::current()->is_VM_thread() ||
1664 (JavaThread::current()->thread_state() != _thread_blocked &&
1665 JavaThread::current()->thread_state() != _thread_in_native),
1666 "Unsafe access to oop");
1667 return java_thread->bool_field_volatile(_interrupted_offset);
1668 }
1669
1670 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1671 // Make sure the caller can safely access oops.
1672 assert(Thread::current()->is_VM_thread() ||
1673 (JavaThread::current()->thread_state() != _thread_blocked &&
1674 JavaThread::current()->thread_state() != _thread_in_native),
1675 "Unsafe access to oop");
1676 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1677 }
1678
1679
1680 oop java_lang_Thread::name(oop java_thread) {
1681 return java_thread->obj_field(_name_offset);
1682 }
1683
1684
1685 void java_lang_Thread::set_name(oop java_thread, oop name) {
1686 java_thread->obj_field_put(_name_offset, name);
1687 }
1688
1689 // Convenience macros for setting and getting Thread fields that
1690 // are actually stored in the FieldHolder object of the thread.
1691 // The FieldHolder can be null whilst a thread is attaching via
1692 // JNI, and when the main thread is attaching.
1693
1694 // The default value should be the default/zero initialized value
1695 // of the field as it would be in java.lang.Thread.FieldHolder.
1696 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1697 { \
1698 oop holder = java_lang_Thread::holder(java_thread); \
1699 if (holder != nullptr) \
1700 return java_lang_Thread_FieldHolder::field(holder); \
1701 else \
1702 return default_val; \
1703 }
1704
1705 // We should never be trying to set a field of an attaching thread.
1706 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1707 { \
1708 oop holder = java_lang_Thread::holder(java_thread); \
1709 assert(holder != nullptr, "Thread not fully initialized"); \
1710 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1711 }
1712
1713
1714 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1715 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1716 }
1717
1718
1719 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1720 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1721 }
1722
1723
1724 oop java_lang_Thread::threadGroup(oop java_thread) {
1725 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1726 }
1727
1728
1729 bool java_lang_Thread::is_alive(oop java_thread) {
1730 JavaThread* thr = java_lang_Thread::thread(java_thread);
1731 return (thr != nullptr);
1732 }
1733
1734
1735 bool java_lang_Thread::is_daemon(oop java_thread) {
1736 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1737 }
1738
1739
1740 void java_lang_Thread::set_daemon(oop java_thread) {
1741 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1742 }
1743
1744 oop java_lang_Thread::context_class_loader(oop java_thread) {
1745 return java_thread->obj_field(_contextClassLoader_offset);
1746 }
1747
1748 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1749 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1750 }
1751
1752
1753 jlong java_lang_Thread::stackSize(oop java_thread) {
1754 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1755 }
1756
1757 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1758 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1759 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1760 }
1761
1762 // Read thread status value from threadStatus field in java.lang.Thread java class.
1763 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1764 // Make sure the caller is operating on behalf of the VM or is
1765 // running VM code (state == _thread_in_vm).
1766 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1767 JavaThread::current()->thread_state() == _thread_in_vm,
1768 "Java Thread is not running in vm");
1769 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1770 }
1771
1772 ByteSize java_lang_Thread::thread_id_offset() {
1773 return in_ByteSize(_tid_offset);
1774 }
1775
1776 oop java_lang_Thread::park_blocker(oop java_thread) {
1777 return java_thread->obj_field(_park_blocker_offset);
1778 }
1779
1780 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1781 ThreadsListHandle tlh(JavaThread::current());
1782 JavaThread* thread;
1783 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1784 if (is_virtual) {
1785 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1786 if (carrier_thread == nullptr) {
1787 return nullptr;
1788 }
1789 thread = java_lang_Thread::thread(carrier_thread);
1790 } else {
1791 thread = java_lang_Thread::thread(java_thread);
1792 }
1793 if (thread == nullptr) {
1794 return nullptr;
1795 }
1796
1797 class GetStackTraceClosure : public HandshakeClosure {
1798 public:
1799 const Handle _java_thread;
1800 int _depth;
1801 bool _retry_handshake;
1802 GrowableArray<Method*>* _methods;
1803 GrowableArray<int>* _bcis;
1804
1805 GetStackTraceClosure(Handle java_thread) :
1806 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1807 _methods(nullptr), _bcis(nullptr) {
1808 }
1809 ~GetStackTraceClosure() {
1810 delete _methods;
1811 delete _bcis;
1812 }
1813
1814 bool read_reset_retry() {
1815 bool ret = _retry_handshake;
1816 // If we re-execute the handshake this method need to return false
1817 // when the handshake cannot be performed. (E.g. thread terminating)
1818 _retry_handshake = false;
1819 return ret;
1820 }
1821
1822 void do_thread(Thread* th) {
1823 if (!Thread::current()->is_Java_thread()) {
1824 _retry_handshake = true;
1825 return;
1826 }
1827
1828 JavaThread* thread = JavaThread::cast(th);
1829
1830 if (!thread->has_last_Java_frame()) {
1831 return;
1832 }
1833
1834 bool carrier = false;
1835 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1836 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1837 const ContinuationEntry* ce = thread->vthread_continuation();
1838 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1839 return; // not mounted
1840 }
1841 } else {
1842 carrier = (thread->vthread_continuation() != nullptr);
1843 }
1844
1845 const int max_depth = MaxJavaStackTraceDepth;
1846 const bool skip_hidden = !ShowHiddenFrames;
1847
1848 // Pick minimum length that will cover most cases
1849 int init_length = 64;
1850 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1851 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1852
1853 int total_count = 0;
1854 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1855 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1856 vfst.next()) {
1857
1858 if (skip_hidden && (vfst.method()->is_hidden() ||
1859 vfst.method()->is_continuation_enter_intrinsic())) {
1860 continue;
1861 }
1862
1863 _methods->push(vfst.method());
1864 _bcis->push(vfst.bci());
1865 total_count++;
1866 }
1867
1868 _depth = total_count;
1869 }
1870 };
1871
1872 // Handshake with target
1873 ResourceMark rm(THREAD);
1874 HandleMark hm(THREAD);
1875 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1876 do {
1877 Handshake::execute(&gstc, &tlh, thread);
1878 } while (gstc.read_reset_retry());
1879
1880 // Stop if no stack trace is found.
1881 if (gstc._depth == 0) {
1882 return nullptr;
1883 }
1884
1885 // Convert to StackTraceElement array
1886 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1887 assert(k != nullptr, "must be loaded in 1.4+");
1888 if (k->should_be_initialized()) {
1889 k->initialize(CHECK_NULL);
1890 }
1891 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1892
1893 for (int i = 0; i < gstc._depth; i++) {
1894 methodHandle method(THREAD, gstc._methods->at(i));
1895 oop element = java_lang_StackTraceElement::create(method,
1896 gstc._bcis->at(i),
1897 CHECK_NULL);
1898 trace->obj_at_put(i, element);
1899 }
1900
1901 return trace();
1902 }
1903
1904 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1905 JavaThreadStatus status = get_thread_status(java_thread);
1906 switch (status) {
1907 case JavaThreadStatus::NEW : return "NEW";
1908 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1909 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1910 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1911 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1912 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1913 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1914 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1915 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1916 default : return "UNKNOWN";
1917 };
1918 }
1919 int java_lang_ThreadGroup::_parent_offset;
1920 int java_lang_ThreadGroup::_name_offset;
1921 int java_lang_ThreadGroup::_maxPriority_offset;
1922 int java_lang_ThreadGroup::_daemon_offset;
1923
1924 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1925 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1926 return java_thread_group->obj_field(_parent_offset);
1927 }
1928
1929 // ("name as oop" accessor is not necessary)
1930
1931 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1932 oop name = java_thread_group->obj_field(_name_offset);
1933 // ThreadGroup.name can be null
1934 if (name != nullptr) {
1935 return java_lang_String::as_utf8_string(name);
1936 }
1937 return nullptr;
1938 }
1939
1940 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1941 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1942 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1943 }
1944
1945 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1946 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1947 return java_thread_group->bool_field(_daemon_offset) != 0;
1948 }
1949
1950 #define THREADGROUP_FIELDS_DO(macro) \
1951 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1952 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1953 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1954 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
1955
1956 void java_lang_ThreadGroup::compute_offsets() {
1957 assert(_parent_offset == 0, "offsets should be initialized only once");
1958
1959 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1960 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1961 }
1962
1963 #if INCLUDE_CDS
1964 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1965 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1966 }
1967 #endif
1968
1969
1970 // java_lang_VirtualThread
1971
1972 int java_lang_VirtualThread::static_vthread_scope_offset;
1973 int java_lang_VirtualThread::_carrierThread_offset;
1974 int java_lang_VirtualThread::_continuation_offset;
1975 int java_lang_VirtualThread::_state_offset;
1976
1977 #define VTHREAD_FIELDS_DO(macro) \
1978 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
1979 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
1980 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1981 macro(_state_offset, k, "state", int_signature, false)
1982
1983
1984 void java_lang_VirtualThread::compute_offsets() {
1985 InstanceKlass* k = vmClasses::VirtualThread_klass();
1986 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1987 }
1988
1989 bool java_lang_VirtualThread::is_instance(oop obj) {
1990 return obj != nullptr && is_subclass(obj->klass());
1991 }
1992
1993 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
1994 oop thread = vthread->obj_field(_carrierThread_offset);
1995 return thread;
1996 }
1997
1998 oop java_lang_VirtualThread::continuation(oop vthread) {
1999 oop cont = vthread->obj_field(_continuation_offset);
2000 return cont;
2001 }
2002
2003 int java_lang_VirtualThread::state(oop vthread) {
2004 return vthread->int_field_acquire(_state_offset);
2005 }
2006
2007 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2008 JavaThreadStatus status = JavaThreadStatus::NEW;
2009 switch (state & ~SUSPENDED) {
2010 case NEW:
2011 status = JavaThreadStatus::NEW;
2012 break;
2013 case STARTED:
2014 case RUNNING:
2015 case PARKING:
2016 case TIMED_PARKING:
2017 case UNPARKED:
2018 case YIELDING:
2019 case YIELDED:
2020 status = JavaThreadStatus::RUNNABLE;
2021 break;
2022 case PARKED:
2023 case PINNED:
2024 status = JavaThreadStatus::PARKED;
2025 break;
2026 case TIMED_PARKED:
2027 case TIMED_PINNED:
2028 status = JavaThreadStatus::PARKED_TIMED;
2029 break;
2030 case TERMINATED:
2031 status = JavaThreadStatus::TERMINATED;
2032 break;
2033 default:
2034 ShouldNotReachHere();
2035 }
2036 return status;
2037 }
2038
2039 #if INCLUDE_CDS
2040 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2041 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2042 }
2043 #endif
2044
2045 // java_lang_Throwable
2046
2047 int java_lang_Throwable::_backtrace_offset;
2048 int java_lang_Throwable::_detailMessage_offset;
2049 int java_lang_Throwable::_stackTrace_offset;
2050 int java_lang_Throwable::_depth_offset;
2051 int java_lang_Throwable::_cause_offset;
2052 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2053
2054 #define THROWABLE_FIELDS_DO(macro) \
2055 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2056 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2057 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2058 macro(_depth_offset, k, "depth", int_signature, false); \
2059 macro(_cause_offset, k, "cause", throwable_signature, false); \
2060 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2061
2062 void java_lang_Throwable::compute_offsets() {
2063 InstanceKlass* k = vmClasses::Throwable_klass();
2064 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2065 }
2066
2067 #if INCLUDE_CDS
2068 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2069 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2070 }
2071 #endif
2072
2073 oop java_lang_Throwable::unassigned_stacktrace() {
2074 InstanceKlass* ik = vmClasses::Throwable_klass();
2075 oop base = ik->static_field_base_raw();
2076 return base->obj_field(_static_unassigned_stacktrace_offset);
2077 }
2078
2079 oop java_lang_Throwable::backtrace(oop throwable) {
2080 return throwable->obj_field_acquire(_backtrace_offset);
2081 }
2082
2083
2084 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2085 throwable->release_obj_field_put(_backtrace_offset, value);
2086 }
2087
2088 int java_lang_Throwable::depth(oop throwable) {
2089 return throwable->int_field(_depth_offset);
2090 }
2091
2092 void java_lang_Throwable::set_depth(oop throwable, int value) {
2093 throwable->int_field_put(_depth_offset, value);
2094 }
2095
2096 oop java_lang_Throwable::message(oop throwable) {
2097 return throwable->obj_field(_detailMessage_offset);
2098 }
2099
2100 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2101 oop msg = java_lang_Throwable::message(throwable);
2102 const char* msg_utf8 = nullptr;
2103 if (msg != nullptr) {
2104 msg_utf8 = java_lang_String::as_utf8_string(msg);
2105 }
2106 return msg_utf8;
2107 }
2108
2109 oop java_lang_Throwable::cause(oop throwable) {
2110 return throwable->obj_field(_cause_offset);
2111 }
2112
2113 void java_lang_Throwable::set_message(oop throwable, oop value) {
2114 throwable->obj_field_put(_detailMessage_offset, value);
2115 }
2116
2117
2118 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2119 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2120 }
2121
2122 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2123 set_stacktrace(throwable, nullptr);
2124 }
2125
2126 oop java_lang_Throwable::create_exception_instance(Symbol* class_name, TRAPS) {
2127 Klass* k = SystemDictionary::resolve_or_fail(class_name, true, CHECK_NULL);
2128 return InstanceKlass::cast(k)->allocate_instance(CHECK_NULL);
2129 }
2130
2131 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2132 ResourceMark rm;
2133 Klass* k = throwable->klass();
2134 assert(k != nullptr, "just checking");
2135 st->print("%s", k->external_name());
2136 oop msg = message(throwable);
2137 if (msg != nullptr) {
2138 st->print(": %s", java_lang_String::as_utf8_string(msg));
2139 }
2140 }
2141
2142 // After this many redefines, the stack trace is unreliable.
2143 const int MAX_VERSION = USHRT_MAX;
2144
2145 static inline bool version_matches(Method* method, int version) {
2146 assert(version < MAX_VERSION, "version is too big");
2147 return method != nullptr && (method->constants()->version() == version);
2148 }
2149
2150 // This class provides a simple wrapper over the internal structure of
2151 // exception backtrace to insulate users of the backtrace from needing
2152 // to know what it looks like.
2153 // The code of this class is not GC safe. Allocations can only happen
2154 // in expand().
2155 class BacktraceBuilder: public StackObj {
2156 friend class BacktraceIterator;
2157 private:
2158 Handle _backtrace;
2159 objArrayOop _head;
2160 typeArrayOop _methods;
2161 typeArrayOop _bcis;
2162 objArrayOop _mirrors;
2163 typeArrayOop _names; // Needed to insulate method name against redefinition.
2164 // True if the top frame of the backtrace is omitted because it shall be hidden.
2165 bool _has_hidden_top_frame;
2166 int _index;
2167 NoSafepointVerifier _nsv;
2168
2169 enum {
2170 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2171 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2172 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2173 trace_names_offset = java_lang_Throwable::trace_names_offset,
2174 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2175 trace_next_offset = java_lang_Throwable::trace_next_offset,
2176 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2177 trace_size = java_lang_Throwable::trace_size,
2178 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2179 };
2180
2181 // get info out of chunks
2182 static typeArrayOop get_methods(objArrayHandle chunk) {
2183 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2184 assert(methods != nullptr, "method array should be initialized in backtrace");
2185 return methods;
2186 }
2187 static typeArrayOop get_bcis(objArrayHandle chunk) {
2188 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2189 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2190 return bcis;
2191 }
2192 static objArrayOop get_mirrors(objArrayHandle chunk) {
2193 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2194 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2195 return mirrors;
2196 }
2197 static typeArrayOop get_names(objArrayHandle chunk) {
2198 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2199 assert(names != nullptr, "names array should be initialized in backtrace");
2200 return names;
2201 }
2202 static bool has_hidden_top_frame(objArrayHandle chunk) {
2203 oop hidden = chunk->obj_at(trace_hidden_offset);
2204 return hidden != nullptr;
2205 }
2206
2207 public:
2208
2209 // constructor for new backtrace
2210 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2211 expand(CHECK);
2212 _backtrace = Handle(THREAD, _head);
2213 _index = 0;
2214 }
2215
2216 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2217 _methods = get_methods(backtrace);
2218 _bcis = get_bcis(backtrace);
2219 _mirrors = get_mirrors(backtrace);
2220 _names = get_names(backtrace);
2221 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2222 assert(_methods->length() == _bcis->length() &&
2223 _methods->length() == _mirrors->length() &&
2224 _mirrors->length() == _names->length(),
2225 "method and source information arrays should match");
2226
2227 // head is the preallocated backtrace
2228 _head = backtrace();
2229 _backtrace = Handle(thread, _head);
2230 _index = 0;
2231 }
2232
2233 void expand(TRAPS) {
2234 objArrayHandle old_head(THREAD, _head);
2235 PauseNoSafepointVerifier pnsv(&_nsv);
2236
2237 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2238 objArrayHandle new_head(THREAD, head);
2239
2240 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2241 typeArrayHandle new_methods(THREAD, methods);
2242
2243 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2244 typeArrayHandle new_bcis(THREAD, bcis);
2245
2246 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2247 objArrayHandle new_mirrors(THREAD, mirrors);
2248
2249 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2250 typeArrayHandle new_names(THREAD, names);
2251
2252 if (!old_head.is_null()) {
2253 old_head->obj_at_put(trace_next_offset, new_head());
2254 }
2255 new_head->obj_at_put(trace_methods_offset, new_methods());
2256 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2257 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2258 new_head->obj_at_put(trace_names_offset, new_names());
2259 new_head->obj_at_put(trace_hidden_offset, nullptr);
2260
2261 _head = new_head();
2262 _methods = new_methods();
2263 _bcis = new_bcis();
2264 _mirrors = new_mirrors();
2265 _names = new_names();
2266 _index = 0;
2267 }
2268
2269 oop backtrace() {
2270 return _backtrace();
2271 }
2272
2273 inline void push(Method* method, int bci, TRAPS) {
2274 // Smear the -1 bci to 0 since the array only holds unsigned
2275 // shorts. The later line number lookup would just smear the -1
2276 // to a 0 even if it could be recorded.
2277 if (bci == SynchronizationEntryBCI) bci = 0;
2278
2279 if (_index >= trace_chunk_size) {
2280 methodHandle mhandle(THREAD, method);
2281 expand(CHECK);
2282 method = mhandle();
2283 }
2284
2285 _methods->ushort_at_put(_index, method->orig_method_idnum());
2286 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2287
2288 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2289 // klass owning the symbols alive so their refcounts aren't decremented.
2290 Symbol* name = method->name();
2291 _names->symbol_at_put(_index, name);
2292
2293 // We need to save the mirrors in the backtrace to keep the class
2294 // from being unloaded while we still have this stack trace.
2295 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2296 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2297
2298 _index++;
2299 }
2300
2301 void set_has_hidden_top_frame() {
2302 if (!_has_hidden_top_frame) {
2303 // It would be nice to add java/lang/Boolean::TRUE here
2304 // to indicate that this backtrace has a hidden top frame.
2305 // But this code is used before TRUE is allocated.
2306 // Therefore let's just use an arbitrary legal oop
2307 // available right here. _methods is a short[].
2308 assert(_methods != nullptr, "we need a legal oop");
2309 _has_hidden_top_frame = true;
2310 _head->obj_at_put(trace_hidden_offset, _methods);
2311 }
2312 }
2313 };
2314
2315 struct BacktraceElement : public StackObj {
2316 int _method_id;
2317 int _bci;
2318 int _version;
2319 Symbol* _name;
2320 Handle _mirror;
2321 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2322 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2323 };
2324
2325 class BacktraceIterator : public StackObj {
2326 int _index;
2327 objArrayHandle _result;
2328 objArrayHandle _mirrors;
2329 typeArrayHandle _methods;
2330 typeArrayHandle _bcis;
2331 typeArrayHandle _names;
2332
2333 void init(objArrayHandle result, Thread* thread) {
2334 // Get method id, bci, version and mirror from chunk
2335 _result = result;
2336 if (_result.not_null()) {
2337 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2338 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2339 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2340 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2341 _index = 0;
2342 }
2343 }
2344 public:
2345 BacktraceIterator(objArrayHandle result, Thread* thread) {
2346 init(result, thread);
2347 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2348 }
2349
2350 BacktraceElement next(Thread* thread) {
2351 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2352 _methods->ushort_at(_index),
2353 Backtrace::version_at(_bcis->int_at(_index)),
2354 Backtrace::bci_at(_bcis->int_at(_index)),
2355 _names->symbol_at(_index));
2356 _index++;
2357
2358 if (_index >= java_lang_Throwable::trace_chunk_size) {
2359 int next_offset = java_lang_Throwable::trace_next_offset;
2360 // Get next chunk
2361 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2362 init(result, thread);
2363 }
2364 return e;
2365 }
2366
2367 bool repeat() {
2368 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2369 }
2370 };
2371
2372
2373 // Print stack trace element to resource allocated buffer
2374 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2375 int version, int bci, Symbol* name) {
2376 ResourceMark rm;
2377
2378 // Get strings and string lengths
2379 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2380 const char* klass_name = holder->external_name();
2381 int buf_len = (int)strlen(klass_name);
2382
2383 char* method_name = name->as_C_string();
2384 buf_len += (int)strlen(method_name);
2385
2386 char* source_file_name = nullptr;
2387 Symbol* source = Backtrace::get_source_file_name(holder, version);
2388 if (source != nullptr) {
2389 source_file_name = source->as_C_string();
2390 buf_len += (int)strlen(source_file_name);
2391 }
2392
2393 char *module_name = nullptr, *module_version = nullptr;
2394 ModuleEntry* module = holder->module();
2395 if (module->is_named()) {
2396 module_name = module->name()->as_C_string();
2397 buf_len += (int)strlen(module_name);
2398 if (module->version() != nullptr) {
2399 module_version = module->version()->as_C_string();
2400 buf_len += (int)strlen(module_version);
2401 }
2402 }
2403
2404 // Allocate temporary buffer with extra space for formatting and line number
2405 const size_t buf_size = buf_len + 64;
2406 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2407
2408 // Print stack trace line in buffer
2409 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2410
2411 // Print module information
2412 if (module_name != nullptr) {
2413 if (module_version != nullptr) {
2414 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2415 } else {
2416 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2417 }
2418 }
2419
2420 // The method can be null if the requested class version is gone
2421 Method* method = holder->method_with_orig_idnum(method_id, version);
2422 if (!version_matches(method, version)) {
2423 strcat(buf, "Redefined)");
2424 } else {
2425 int line_number = Backtrace::get_line_number(method, bci);
2426 if (line_number == -2) {
2427 strcat(buf, "Native Method)");
2428 } else {
2429 if (source_file_name != nullptr && (line_number != -1)) {
2430 // Sourcename and linenumber
2431 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2432 } else if (source_file_name != nullptr) {
2433 // Just sourcename
2434 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2435 } else {
2436 // Neither sourcename nor linenumber
2437 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2438 }
2439 nmethod* nm = method->code();
2440 if (WizardMode && nm != nullptr) {
2441 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2442 }
2443 }
2444 }
2445
2446 st->print_cr("%s", buf);
2447 }
2448
2449 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2450 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2451 int method_id = method->orig_method_idnum();
2452 int version = method->constants()->version();
2453 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2454 }
2455
2456 /**
2457 * Print the throwable message and its stack trace plus all causes by walking the
2458 * cause chain. The output looks the same as of Throwable.printStackTrace().
2459 */
2460 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2461 // First, print the message.
2462 print(throwable(), st);
2463 st->cr();
2464
2465 // Now print the stack trace.
2466 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2467 while (throwable.not_null()) {
2468 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2469 if (result.is_null()) {
2470 st->print_raw_cr("\t<<no stack trace available>>");
2471 return;
2472 }
2473 BacktraceIterator iter(result, THREAD);
2474
2475 while (iter.repeat()) {
2476 BacktraceElement bte = iter.next(THREAD);
2477 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2478 }
2479 if (THREAD->can_call_java()) {
2480 // Call getCause() which doesn't necessarily return the _cause field.
2481 ExceptionMark em(THREAD);
2482 JavaValue cause(T_OBJECT);
2483 JavaCalls::call_virtual(&cause,
2484 throwable,
2485 throwable->klass(),
2486 vmSymbols::getCause_name(),
2487 vmSymbols::void_throwable_signature(),
2488 THREAD);
2489 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2490 if (HAS_PENDING_EXCEPTION) {
2491 CLEAR_PENDING_EXCEPTION;
2492 throwable = Handle();
2493 } else {
2494 throwable = Handle(THREAD, cause.get_oop());
2495 if (throwable.not_null()) {
2496 st->print("Caused by: ");
2497 print(throwable(), st);
2498 st->cr();
2499 }
2500 }
2501 } else {
2502 st->print_raw_cr("<<cannot call Java to get cause>>");
2503 return;
2504 }
2505 }
2506 }
2507
2508 /**
2509 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2510 */
2511 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2512 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2513 JavaValue result(T_VOID);
2514 JavaCalls::call_virtual(&result,
2515 throwable,
2516 vmClasses::Throwable_klass(),
2517 vmSymbols::printStackTrace_name(),
2518 vmSymbols::void_method_signature(),
2519 THREAD);
2520 }
2521
2522 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2523 if (!StackTraceInThrowable) return;
2524 ResourceMark rm(THREAD);
2525
2526 // Start out by clearing the backtrace for this object, in case the VM
2527 // runs out of memory while allocating the stack trace
2528 set_backtrace(throwable(), nullptr);
2529 // Clear lazily constructed Java level stacktrace if refilling occurs
2530 // This is unnecessary in 1.7+ but harmless
2531 clear_stacktrace(throwable());
2532
2533 int max_depth = MaxJavaStackTraceDepth;
2534 JavaThread* thread = THREAD;
2535
2536 BacktraceBuilder bt(CHECK);
2537
2538 // If there is no Java frame just return the method that was being called
2539 // with bci 0
2540 if (!thread->has_last_Java_frame()) {
2541 if (max_depth >= 1 && method() != nullptr) {
2542 bt.push(method(), 0, CHECK);
2543 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2544 set_depth(throwable(), 1);
2545 set_backtrace(throwable(), bt.backtrace());
2546 }
2547 return;
2548 }
2549
2550 // Instead of using vframe directly, this version of fill_in_stack_trace
2551 // basically handles everything by hand. This significantly improved the
2552 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2553 // See bug 6333838 for more details.
2554 // The "ASSERT" here is to verify this method generates the exactly same stack
2555 // trace as utilizing vframe.
2556 #ifdef ASSERT
2557 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2558 #endif
2559 int total_count = 0;
2560 RegisterMap map(thread,
2561 RegisterMap::UpdateMap::skip,
2562 RegisterMap::ProcessFrames::skip,
2563 RegisterMap::WalkContinuation::include);
2564 int decode_offset = 0;
2565 nmethod* nm = nullptr;
2566 bool skip_fillInStackTrace_check = false;
2567 bool skip_throwableInit_check = false;
2568 bool skip_hidden = !ShowHiddenFrames;
2569 bool show_carrier = ShowCarrierFrames;
2570 ContinuationEntry* cont_entry = thread->last_continuation();
2571 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2572 Method* method = nullptr;
2573 int bci = 0;
2574
2575 // Compiled java method case.
2576 if (decode_offset != 0) {
2577 DebugInfoReadStream stream(nm, decode_offset);
2578 decode_offset = stream.read_int();
2579 method = (Method*)nm->metadata_at(stream.read_int());
2580 bci = stream.read_bci();
2581 } else {
2582 if (fr.is_first_frame()) break;
2583
2584 if (Continuation::is_continuation_enterSpecial(fr)) {
2585 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2586 if (!show_carrier && cont_entry->is_virtual_thread()) {
2587 break;
2588 }
2589 cont_entry = cont_entry->parent();
2590 }
2591
2592 address pc = fr.pc();
2593 if (fr.is_interpreted_frame()) {
2594 address bcp;
2595 if (!map.in_cont()) {
2596 bcp = fr.interpreter_frame_bcp();
2597 method = fr.interpreter_frame_method();
2598 } else {
2599 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2600 method = map.stack_chunk()->interpreter_frame_method(fr);
2601 }
2602 bci = method->bci_from(bcp);
2603 fr = fr.sender(&map);
2604 } else {
2605 CodeBlob* cb = fr.cb();
2606 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2607 // but non nmethod
2608 fr = fr.sender(&map);
2609 if (cb == nullptr || !cb->is_nmethod()) {
2610 continue;
2611 }
2612 nm = cb->as_nmethod();
2613 assert(nm->method() != nullptr, "must be");
2614 if (nm->method()->is_native()) {
2615 method = nm->method();
2616 bci = 0;
2617 } else {
2618 PcDesc* pd = nm->pc_desc_at(pc);
2619 decode_offset = pd->scope_decode_offset();
2620 // if decode_offset is not equal to 0, it will execute the
2621 // "compiled java method case" at the beginning of the loop.
2622 continue;
2623 }
2624 }
2625 }
2626 #ifdef ASSERT
2627 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2628 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2629 st.next();
2630 }
2631 #endif
2632
2633 // the format of the stacktrace will be:
2634 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2635 // - 0 or more <init> methods for the exception class (skipped)
2636 // - rest of the stack
2637
2638 if (!skip_fillInStackTrace_check) {
2639 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2640 throwable->is_a(method->method_holder())) {
2641 continue;
2642 }
2643 else {
2644 skip_fillInStackTrace_check = true; // gone past them all
2645 }
2646 }
2647 if (!skip_throwableInit_check) {
2648 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2649
2650 // skip <init> methods of the exception class and superclasses
2651 // This is similar to classic VM.
2652 if (method->name() == vmSymbols::object_initializer_name() &&
2653 throwable->is_a(method->method_holder())) {
2654 continue;
2655 } else {
2656 // there are none or we've seen them all - either way stop checking
2657 skip_throwableInit_check = true;
2658 }
2659 }
2660 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2661 if (skip_hidden) {
2662 if (total_count == 0) {
2663 // The top frame will be hidden from the stack trace.
2664 bt.set_has_hidden_top_frame();
2665 }
2666 continue;
2667 }
2668 }
2669
2670 bt.push(method, bci, CHECK);
2671 total_count++;
2672 }
2673
2674 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2675
2676 // Put completed stack trace into throwable object
2677 set_backtrace(throwable(), bt.backtrace());
2678 set_depth(throwable(), total_count);
2679 }
2680
2681 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2682 // No-op if stack trace is disabled
2683 if (!StackTraceInThrowable) {
2684 return;
2685 }
2686
2687 // Disable stack traces for some preallocated out of memory errors
2688 if (!Universe::should_fill_in_stack_trace(throwable)) {
2689 return;
2690 }
2691
2692 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2693 PreserveExceptionMark pm(THREAD);
2694
2695 fill_in_stack_trace(throwable, method, THREAD);
2696 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2697 // original exception via the PreserveExceptionMark destructor.
2698 CLEAR_PENDING_EXCEPTION;
2699 }
2700
2701 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2702 // Allocate stack trace - backtrace is created but not filled in
2703
2704 // No-op if stack trace is disabled
2705 if (!StackTraceInThrowable) return;
2706 BacktraceBuilder bt(CHECK); // creates a backtrace
2707 set_backtrace(throwable(), bt.backtrace());
2708 }
2709
2710
2711 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2712 // Fill in stack trace into preallocated backtrace (no GC)
2713
2714 // No-op if stack trace is disabled
2715 if (!StackTraceInThrowable) return;
2716
2717 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2718
2719 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2720
2721 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2722 assert(backtrace.not_null(), "backtrace should have been preallocated");
2723
2724 ResourceMark rm(THREAD);
2725 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2726
2727 BacktraceBuilder bt(THREAD, backtrace);
2728
2729 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2730 // methods as preallocated errors aren't created by "java" code.
2731
2732 // fill in as much stack trace as possible
2733 int chunk_count = 0;
2734 for (;!st.at_end(); st.next()) {
2735 bt.push(st.method(), st.bci(), CHECK);
2736 chunk_count++;
2737
2738 // Bail-out for deep stacks
2739 if (chunk_count >= trace_chunk_size) break;
2740 }
2741 set_depth(throwable(), chunk_count);
2742 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2743
2744 // We support the Throwable immutability protocol defined for Java 7.
2745 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2746 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2747 }
2748
2749 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2750 objArrayHandle stack_trace_array_h, TRAPS) {
2751
2752 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2753 THROW(vmSymbols::java_lang_NullPointerException());
2754 }
2755
2756 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2757
2758 if (stack_trace_array_h->length() != depth) {
2759 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2760 }
2761
2762 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2763 BacktraceIterator iter(result, THREAD);
2764
2765 int index = 0;
2766 while (iter.repeat()) {
2767 BacktraceElement bte = iter.next(THREAD);
2768
2769 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2770
2771 if (stack_trace_element.is_null()) {
2772 THROW(vmSymbols::java_lang_NullPointerException());
2773 }
2774
2775 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2776 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2777
2778 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2779 method,
2780 bte._version,
2781 bte._bci,
2782 bte._name,
2783 CHECK);
2784 }
2785 }
2786
2787 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2788 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2789 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2790 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2791 // symbolic stacktrace of 'throwable'.
2792 assert(throwable.not_null(), "shouldn't be");
2793
2794 // Now create the message from the original exception and thread name.
2795 ResourceMark rm(current);
2796 const char *message = nullptr;
2797 oop detailed_message = java_lang_Throwable::message(throwable());
2798 if (detailed_message != nullptr) {
2799 message = java_lang_String::as_utf8_string(detailed_message);
2800 }
2801 stringStream st;
2802 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2803 message == nullptr ? "" : ":");
2804 if (message == nullptr) {
2805 st.print("[in thread \"%s\"]", current->name());
2806 } else {
2807 st.print("%s [in thread \"%s\"]", message, current->name());
2808 }
2809
2810 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2811 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2812 // If new_exception returns a different exception while creating the exception,
2813 // abandon the attempt to save the initialization error and return null.
2814 if (init_error->klass()->name() != exception_name) {
2815 log_info(class, init)("Exception %s thrown while saving initialization exception",
2816 init_error->klass()->external_name());
2817 return Handle();
2818 }
2819
2820 // Call to java to fill in the stack trace and clear declaringClassObject to
2821 // not keep classes alive in the stack trace.
2822 // call this: public StackTraceElement[] getStackTrace()
2823 JavaValue result(T_ARRAY);
2824 JavaCalls::call_virtual(&result, throwable,
2825 vmClasses::Throwable_klass(),
2826 vmSymbols::getStackTrace_name(),
2827 vmSymbols::getStackTrace_signature(),
2828 current);
2829 if (!current->has_pending_exception()){
2830 Handle stack_trace(current, result.get_oop());
2831 assert(stack_trace->is_objArray(), "Should be an array");
2832 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
2833 // Clear backtrace because the stacktrace should be used instead.
2834 set_backtrace(init_error(), nullptr);
2835 } else {
2836 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
2837 init_error->klass()->external_name());
2838 current->clear_pending_exception();
2839 }
2840
2841 return init_error;
2842 }
2843
2844 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2845 JavaThread* current = JavaThread::current();
2846 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2847 BacktraceIterator iter(result, current);
2848 // No backtrace available.
2849 if (!iter.repeat()) return false;
2850
2851 // If the exception happened in a frame that has been hidden, i.e.,
2852 // omitted from the back trace, we can not compute the message.
2853 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2854 if (hidden != nullptr) {
2855 return false;
2856 }
2857
2858 // Get first backtrace element.
2859 BacktraceElement bte = iter.next(current);
2860
2861 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2862 assert(holder != nullptr, "first element should be non-null");
2863 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2864
2865 // Original version is no longer available.
2866 if (m == nullptr || !version_matches(m, bte._version)) {
2867 return false;
2868 }
2869
2870 *method = m;
2871 *bci = bte._bci;
2872 return true;
2873 }
2874
2875 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2876 // Allocate java.lang.StackTraceElement instance
2877 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2878 assert(k != nullptr, "must be loaded in 1.4+");
2879 if (k->should_be_initialized()) {
2880 k->initialize(CHECK_NULL);
2881 }
2882
2883 Handle element = k->allocate_instance_handle(CHECK_NULL);
2884
2885 int version = method->constants()->version();
2886 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2887 return element();
2888 }
2889
2890 void java_lang_StackTraceElement::fill_in(Handle element,
2891 InstanceKlass* holder, const methodHandle& method,
2892 int version, int bci, Symbol* name, TRAPS) {
2893 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2894
2895 ResourceMark rm(THREAD);
2896 HandleMark hm(THREAD);
2897
2898 // Fill in class name
2899 Handle java_class(THREAD, holder->java_mirror());
2900 oop classname = java_lang_Class::name(java_class, CHECK);
2901 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2902 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2903
2904 oop loader = holder->class_loader();
2905 if (loader != nullptr) {
2906 oop loader_name = java_lang_ClassLoader::name(loader);
2907 if (loader_name != nullptr)
2908 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2909 }
2910
2911 // Fill in method name
2912 oop methodname = StringTable::intern(name, CHECK);
2913 java_lang_StackTraceElement::set_methodName(element(), methodname);
2914
2915 // Fill in module name and version
2916 ModuleEntry* module = holder->module();
2917 if (module->is_named()) {
2918 oop module_name = StringTable::intern(module->name(), CHECK);
2919 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2920 oop module_version;
2921 if (module->version() != nullptr) {
2922 module_version = StringTable::intern(module->version(), CHECK);
2923 } else {
2924 module_version = nullptr;
2925 }
2926 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2927 }
2928
2929 if (method() == nullptr || !version_matches(method(), version)) {
2930 // The method was redefined, accurate line number information isn't available
2931 java_lang_StackTraceElement::set_fileName(element(), nullptr);
2932 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2933 } else {
2934 Symbol* source;
2935 oop source_file;
2936 int line_number;
2937 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2938
2939 java_lang_StackTraceElement::set_fileName(element(), source_file);
2940 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2941 }
2942 }
2943
2944 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2945 InstanceKlass* holder,
2946 int version,
2947 const methodHandle& method,
2948 int bci,
2949 Symbol*& source,
2950 oop& source_file,
2951 int& line_number, TRAPS) {
2952 // Fill in source file name and line number.
2953 source = Backtrace::get_source_file_name(holder, version);
2954 source_file = java_lang_Class::source_file(java_class());
2955 if (source != nullptr) {
2956 // Class was not redefined. We can trust its cache if set,
2957 // else we have to initialize it.
2958 if (source_file == nullptr) {
2959 source_file = StringTable::intern(source, CHECK);
2960 java_lang_Class::set_source_file(java_class(), source_file);
2961 }
2962 } else {
2963 // Class was redefined. Dump the cache if it was set.
2964 if (source_file != nullptr) {
2965 source_file = nullptr;
2966 java_lang_Class::set_source_file(java_class(), source_file);
2967 }
2968 }
2969 line_number = Backtrace::get_line_number(method(), bci);
2970 }
2971
2972 #if INCLUDE_JVMCI
2973 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2974 Symbol*& filename, int& line_number, TRAPS) {
2975 ResourceMark rm(THREAD);
2976 HandleMark hm(THREAD);
2977
2978 filename = nullptr;
2979 line_number = -1;
2980
2981 oop source_file;
2982 int version = method->constants()->version();
2983 InstanceKlass* holder = method->method_holder();
2984 Handle java_class(THREAD, holder->java_mirror());
2985 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2986 }
2987 #endif // INCLUDE_JVMCI
2988
2989 // java_lang_ClassFrameInfo
2990
2991 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
2992 int java_lang_ClassFrameInfo::_flags_offset;
2993
2994 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
2995 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
2996 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
2997
2998 void java_lang_ClassFrameInfo::compute_offsets() {
2999 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3000 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3001 }
3002
3003 #if INCLUDE_CDS
3004 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3005 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3006 }
3007 #endif
3008
3009 static int get_flags(const methodHandle& m) {
3010 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3011 if (m->is_initializer()) {
3012 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3013 } else {
3014 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3015 }
3016 if (m->caller_sensitive()) {
3017 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3018 }
3019 if (m->is_hidden()) {
3020 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3021 }
3022 assert((flags & 0xFF000000) == 0, "unexpected flags");
3023 return flags;
3024 }
3025
3026 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3027 return obj->obj_field(_classOrMemberName_offset);
3028 }
3029
3030 int java_lang_ClassFrameInfo::flags(oop obj) {
3031 return obj->int_field(_flags_offset);
3032 }
3033
3034 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3035 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3036 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3037 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3038 stackFrame->int_field_put(_flags_offset, flags);
3039 }
3040
3041 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3042 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3043 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3044 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3045 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3046 stackFrame->int_field_put(_flags_offset, flags);
3047 }
3048
3049
3050 // java_lang_StackFrameInfo
3051
3052 int java_lang_StackFrameInfo::_type_offset;
3053 int java_lang_StackFrameInfo::_name_offset;
3054 int java_lang_StackFrameInfo::_bci_offset;
3055 int java_lang_StackFrameInfo::_version_offset;
3056 int java_lang_StackFrameInfo::_contScope_offset;
3057
3058 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3059 macro(_type_offset, k, "type", object_signature, false); \
3060 macro(_name_offset, k, "name", string_signature, false); \
3061 macro(_bci_offset, k, "bci", int_signature, false); \
3062 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3063
3064 void java_lang_StackFrameInfo::compute_offsets() {
3065 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3066 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3067 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3068 }
3069
3070 #if INCLUDE_CDS
3071 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3072 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3073 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3074 }
3075 #endif
3076
3077 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3078 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3079 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3080 return method;
3081 }
3082
3083 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3084 // set Method* or mid/cpref
3085 HandleMark hm(THREAD);
3086 Handle cont_h(THREAD, cont);
3087 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3088
3089 // set bci
3090 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3091 // method may be redefined; store the version
3092 int version = method->constants()->version();
3093 assert((jushort)version == version, "version should be short");
3094 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3095
3096 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3097 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3098 }
3099
3100 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3101 ResourceMark rm(THREAD);
3102 HandleMark hm(THREAD);
3103
3104 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3105 InstanceKlass* holder = method->method_holder();
3106 short version = stackFrame->short_field(_version_offset);
3107 int bci = stackFrame->int_field(_bci_offset);
3108 Symbol* name = method->name();
3109 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3110 }
3111
3112 oop java_lang_StackFrameInfo::type(oop obj) {
3113 return obj->obj_field(_type_offset);
3114 }
3115
3116 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3117 obj->obj_field_put(_type_offset, value);
3118 }
3119
3120 oop java_lang_StackFrameInfo::name(oop obj) {
3121 return obj->obj_field(_name_offset);
3122 }
3123
3124 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3125 obj->obj_field_put(_name_offset, value);
3126 }
3127
3128 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3129 obj->short_field_put(_version_offset, value);
3130 }
3131
3132 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3133 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3134 obj->int_field_put(_bci_offset, value);
3135 }
3136
3137 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3138 obj->obj_field_put(_contScope_offset, value);
3139 }
3140
3141 int java_lang_LiveStackFrameInfo::_monitors_offset;
3142 int java_lang_LiveStackFrameInfo::_locals_offset;
3143 int java_lang_LiveStackFrameInfo::_operands_offset;
3144 int java_lang_LiveStackFrameInfo::_mode_offset;
3145
3146 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3147 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3148 macro(_locals_offset, k, "locals", object_array_signature, false); \
3149 macro(_operands_offset, k, "operands", object_array_signature, false); \
3150 macro(_mode_offset, k, "mode", int_signature, false)
3151
3152 void java_lang_LiveStackFrameInfo::compute_offsets() {
3153 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3154 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3155 }
3156
3157 #if INCLUDE_CDS
3158 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3159 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3160 }
3161 #endif
3162
3163 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3164 obj->obj_field_put(_monitors_offset, value);
3165 }
3166
3167 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3168 obj->obj_field_put(_locals_offset, value);
3169 }
3170
3171 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3172 obj->obj_field_put(_operands_offset, value);
3173 }
3174
3175 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3176 obj->int_field_put(_mode_offset, value);
3177 }
3178
3179
3180 // java_lang_AccessibleObject
3181
3182 int java_lang_reflect_AccessibleObject::_override_offset;
3183
3184 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3185 macro(_override_offset, k, "override", bool_signature, false)
3186
3187 void java_lang_reflect_AccessibleObject::compute_offsets() {
3188 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3189 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3190 }
3191
3192 #if INCLUDE_CDS
3193 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3194 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3195 }
3196 #endif
3197
3198 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3199 return (jboolean) reflect->bool_field(_override_offset);
3200 }
3201
3202 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3203 reflect->bool_field_put(_override_offset, (int) value);
3204 }
3205
3206 // java_lang_reflect_Method
3207
3208 int java_lang_reflect_Method::_clazz_offset;
3209 int java_lang_reflect_Method::_name_offset;
3210 int java_lang_reflect_Method::_returnType_offset;
3211 int java_lang_reflect_Method::_parameterTypes_offset;
3212 int java_lang_reflect_Method::_exceptionTypes_offset;
3213 int java_lang_reflect_Method::_slot_offset;
3214 int java_lang_reflect_Method::_modifiers_offset;
3215 int java_lang_reflect_Method::_signature_offset;
3216 int java_lang_reflect_Method::_annotations_offset;
3217 int java_lang_reflect_Method::_parameter_annotations_offset;
3218 int java_lang_reflect_Method::_annotation_default_offset;
3219
3220 #define METHOD_FIELDS_DO(macro) \
3221 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3222 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3223 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3224 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3225 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3226 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3227 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3228 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3229 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3230 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3231 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3232
3233 void java_lang_reflect_Method::compute_offsets() {
3234 InstanceKlass* k = vmClasses::reflect_Method_klass();
3235 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3236 }
3237
3238 #if INCLUDE_CDS
3239 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3240 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3241 }
3242 #endif
3243
3244 Handle java_lang_reflect_Method::create(TRAPS) {
3245 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3246 Klass* klass = vmClasses::reflect_Method_klass();
3247 // This class is eagerly initialized during VM initialization, since we keep a reference
3248 // to one of the methods
3249 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3250 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3251 }
3252
3253 oop java_lang_reflect_Method::clazz(oop reflect) {
3254 return reflect->obj_field(_clazz_offset);
3255 }
3256
3257 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3258 reflect->obj_field_put(_clazz_offset, value);
3259 }
3260
3261 int java_lang_reflect_Method::slot(oop reflect) {
3262 return reflect->int_field(_slot_offset);
3263 }
3264
3265 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3266 reflect->int_field_put(_slot_offset, value);
3267 }
3268
3269 void java_lang_reflect_Method::set_name(oop method, oop value) {
3270 method->obj_field_put(_name_offset, value);
3271 }
3272
3273 oop java_lang_reflect_Method::return_type(oop method) {
3274 return method->obj_field(_returnType_offset);
3275 }
3276
3277 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3278 method->obj_field_put(_returnType_offset, value);
3279 }
3280
3281 oop java_lang_reflect_Method::parameter_types(oop method) {
3282 return method->obj_field(_parameterTypes_offset);
3283 }
3284
3285 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3286 method->obj_field_put(_parameterTypes_offset, value);
3287 }
3288
3289 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3290 method->obj_field_put(_exceptionTypes_offset, value);
3291 }
3292
3293 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3294 method->int_field_put(_modifiers_offset, value);
3295 }
3296
3297 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3298 method->obj_field_put(_signature_offset, value);
3299 }
3300
3301 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3302 method->obj_field_put(_annotations_offset, value);
3303 }
3304
3305 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3306 method->obj_field_put(_parameter_annotations_offset, value);
3307 }
3308
3309 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3310 method->obj_field_put(_annotation_default_offset, value);
3311 }
3312
3313 int java_lang_reflect_Constructor::_clazz_offset;
3314 int java_lang_reflect_Constructor::_parameterTypes_offset;
3315 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3316 int java_lang_reflect_Constructor::_slot_offset;
3317 int java_lang_reflect_Constructor::_modifiers_offset;
3318 int java_lang_reflect_Constructor::_signature_offset;
3319 int java_lang_reflect_Constructor::_annotations_offset;
3320 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3321
3322 #define CONSTRUCTOR_FIELDS_DO(macro) \
3323 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3324 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3325 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3326 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3327 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3328 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3329 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3330 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3331
3332 void java_lang_reflect_Constructor::compute_offsets() {
3333 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3334 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3335 }
3336
3337 #if INCLUDE_CDS
3338 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3339 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3340 }
3341 #endif
3342
3343 Handle java_lang_reflect_Constructor::create(TRAPS) {
3344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3345 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3346 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3347 InstanceKlass* ik = InstanceKlass::cast(k);
3348 // Ensure it is initialized
3349 ik->initialize(CHECK_NH);
3350 return ik->allocate_instance_handle(THREAD);
3351 }
3352
3353 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3354 return reflect->obj_field(_clazz_offset);
3355 }
3356
3357 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3358 reflect->obj_field_put(_clazz_offset, value);
3359 }
3360
3361 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3362 return constructor->obj_field(_parameterTypes_offset);
3363 }
3364
3365 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3366 constructor->obj_field_put(_parameterTypes_offset, value);
3367 }
3368
3369 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3370 constructor->obj_field_put(_exceptionTypes_offset, value);
3371 }
3372
3373 int java_lang_reflect_Constructor::slot(oop reflect) {
3374 return reflect->int_field(_slot_offset);
3375 }
3376
3377 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3378 reflect->int_field_put(_slot_offset, value);
3379 }
3380
3381 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3382 constructor->int_field_put(_modifiers_offset, value);
3383 }
3384
3385 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3386 constructor->obj_field_put(_signature_offset, value);
3387 }
3388
3389 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3390 constructor->obj_field_put(_annotations_offset, value);
3391 }
3392
3393 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3394 method->obj_field_put(_parameter_annotations_offset, value);
3395 }
3396
3397 int java_lang_reflect_Field::_clazz_offset;
3398 int java_lang_reflect_Field::_name_offset;
3399 int java_lang_reflect_Field::_type_offset;
3400 int java_lang_reflect_Field::_slot_offset;
3401 int java_lang_reflect_Field::_modifiers_offset;
3402 int java_lang_reflect_Field::_trusted_final_offset;
3403 int java_lang_reflect_Field::_signature_offset;
3404 int java_lang_reflect_Field::_annotations_offset;
3405
3406 #define FIELD_FIELDS_DO(macro) \
3407 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3408 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3409 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3410 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3411 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3412 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3413 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3414 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3415
3416 void java_lang_reflect_Field::compute_offsets() {
3417 InstanceKlass* k = vmClasses::reflect_Field_klass();
3418 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3419 }
3420
3421 #if INCLUDE_CDS
3422 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3423 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3424 }
3425 #endif
3426
3427 Handle java_lang_reflect_Field::create(TRAPS) {
3428 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3429 Symbol* name = vmSymbols::java_lang_reflect_Field();
3430 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3431 InstanceKlass* ik = InstanceKlass::cast(k);
3432 // Ensure it is initialized
3433 ik->initialize(CHECK_NH);
3434 return ik->allocate_instance_handle(THREAD);
3435 }
3436
3437 oop java_lang_reflect_Field::clazz(oop reflect) {
3438 return reflect->obj_field(_clazz_offset);
3439 }
3440
3441 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3442 reflect->obj_field_put(_clazz_offset, value);
3443 }
3444
3445 oop java_lang_reflect_Field::name(oop field) {
3446 return field->obj_field(_name_offset);
3447 }
3448
3449 void java_lang_reflect_Field::set_name(oop field, oop value) {
3450 field->obj_field_put(_name_offset, value);
3451 }
3452
3453 oop java_lang_reflect_Field::type(oop field) {
3454 return field->obj_field(_type_offset);
3455 }
3456
3457 void java_lang_reflect_Field::set_type(oop field, oop value) {
3458 field->obj_field_put(_type_offset, value);
3459 }
3460
3461 int java_lang_reflect_Field::slot(oop reflect) {
3462 return reflect->int_field(_slot_offset);
3463 }
3464
3465 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3466 reflect->int_field_put(_slot_offset, value);
3467 }
3468
3469 int java_lang_reflect_Field::modifiers(oop field) {
3470 return field->int_field(_modifiers_offset);
3471 }
3472
3473 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3474 field->int_field_put(_modifiers_offset, value);
3475 }
3476
3477 void java_lang_reflect_Field::set_trusted_final(oop field) {
3478 field->bool_field_put(_trusted_final_offset, true);
3479 }
3480
3481 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3482 field->obj_field_put(_signature_offset, value);
3483 }
3484
3485 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3486 field->obj_field_put(_annotations_offset, value);
3487 }
3488
3489 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3490 // Allocate java.lang.reflect.RecordComponent instance
3491 HandleMark hm(THREAD);
3492 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3493 assert(ik != nullptr, "must be loaded");
3494 ik->initialize(CHECK_NULL);
3495
3496 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3497
3498 Handle decl_class(THREAD, holder->java_mirror());
3499 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3500
3501 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3502 oop component_name = StringTable::intern(name, CHECK_NULL);
3503 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3504
3505 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3506 Handle component_type_h =
3507 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3508 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3509
3510 Method* accessor_method = nullptr;
3511 {
3512 // Prepend "()" to type to create the full method signature.
3513 ResourceMark rm(THREAD);
3514 int sig_len = type->utf8_length() + 3; // "()" and null char
3515 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3516 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3517 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3518 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3519 }
3520
3521 if (accessor_method != nullptr) {
3522 methodHandle method(THREAD, accessor_method);
3523 oop m = Reflection::new_method(method, false, CHECK_NULL);
3524 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3525 } else {
3526 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3527 }
3528
3529 int sig_index = component->generic_signature_index();
3530 if (sig_index > 0) {
3531 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3532 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3533 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3534 } else {
3535 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3536 }
3537
3538 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3539 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3540
3541 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3542 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3543
3544 return element();
3545 }
3546
3547 int reflect_ConstantPool::_oop_offset;
3548
3549 #define CONSTANTPOOL_FIELDS_DO(macro) \
3550 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3551
3552 void reflect_ConstantPool::compute_offsets() {
3553 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3554 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3555 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3556 }
3557
3558 #if INCLUDE_CDS
3559 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3560 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3561 }
3562 #endif
3563
3564 int java_lang_reflect_Parameter::_name_offset;
3565 int java_lang_reflect_Parameter::_modifiers_offset;
3566 int java_lang_reflect_Parameter::_index_offset;
3567 int java_lang_reflect_Parameter::_executable_offset;
3568
3569 #define PARAMETER_FIELDS_DO(macro) \
3570 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3571 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3572 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3573 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3574
3575 void java_lang_reflect_Parameter::compute_offsets() {
3576 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3577 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3578 }
3579
3580 #if INCLUDE_CDS
3581 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3582 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3583 }
3584 #endif
3585
3586 Handle java_lang_reflect_Parameter::create(TRAPS) {
3587 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3588 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3589 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3590 InstanceKlass* ik = InstanceKlass::cast(k);
3591 // Ensure it is initialized
3592 ik->initialize(CHECK_NH);
3593 return ik->allocate_instance_handle(THREAD);
3594 }
3595
3596 oop java_lang_reflect_Parameter::name(oop param) {
3597 return param->obj_field(_name_offset);
3598 }
3599
3600 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3601 param->obj_field_put(_name_offset, value);
3602 }
3603
3604 int java_lang_reflect_Parameter::modifiers(oop param) {
3605 return param->int_field(_modifiers_offset);
3606 }
3607
3608 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3609 param->int_field_put(_modifiers_offset, value);
3610 }
3611
3612 int java_lang_reflect_Parameter::index(oop param) {
3613 return param->int_field(_index_offset);
3614 }
3615
3616 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3617 param->int_field_put(_index_offset, value);
3618 }
3619
3620 oop java_lang_reflect_Parameter::executable(oop param) {
3621 return param->obj_field(_executable_offset);
3622 }
3623
3624 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3625 param->obj_field_put(_executable_offset, value);
3626 }
3627
3628 // java_lang_Module
3629
3630 int java_lang_Module::_loader_offset;
3631 int java_lang_Module::_name_offset;
3632 int java_lang_Module::_module_entry_offset;
3633
3634 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3635 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3636 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3637 vmSymbols::java_lang_module_init_signature(),
3638 loader, module_name, CHECK_NH);
3639 }
3640
3641 #define MODULE_FIELDS_DO(macro) \
3642 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3643 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3644
3645 void java_lang_Module::compute_offsets() {
3646 InstanceKlass* k = vmClasses::Module_klass();
3647 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3648 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3649 }
3650
3651 #if INCLUDE_CDS
3652 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3653 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3654 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3655 }
3656 #endif
3657
3658 oop java_lang_Module::loader(oop module) {
3659 return module->obj_field(_loader_offset);
3660 }
3661
3662 void java_lang_Module::set_loader(oop module, oop value) {
3663 module->obj_field_put(_loader_offset, value);
3664 }
3665
3666 oop java_lang_Module::name(oop module) {
3667 return module->obj_field(_name_offset);
3668 }
3669
3670 void java_lang_Module::set_name(oop module, oop value) {
3671 module->obj_field_put(_name_offset, value);
3672 }
3673
3674 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3675 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3676 assert(module != nullptr, "module can't be null");
3677 assert(oopDesc::is_oop(module), "module must be oop");
3678
3679 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3680 return module_entry;
3681 }
3682
3683 ModuleEntry* java_lang_Module::module_entry(oop module) {
3684 ModuleEntry* module_entry = module_entry_raw(module);
3685 if (module_entry == nullptr) {
3686 // If the inject field containing the ModuleEntry* is null then return the
3687 // class loader's unnamed module.
3688 oop loader = java_lang_Module::loader(module);
3689 Handle h_loader = Handle(Thread::current(), loader);
3690 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3691 return loader_cld->unnamed_module();
3692 }
3693 return module_entry;
3694 }
3695
3696 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3697 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3698 assert(module != nullptr, "module can't be null");
3699 assert(oopDesc::is_oop(module), "module must be oop");
3700 module->address_field_put(_module_entry_offset, (address)module_entry);
3701 }
3702
3703 Handle reflect_ConstantPool::create(TRAPS) {
3704 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3705 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3706 // Ensure it is initialized
3707 k->initialize(CHECK_NH);
3708 return k->allocate_instance_handle(THREAD);
3709 }
3710
3711
3712 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3713 oop mirror = value->pool_holder()->java_mirror();
3714 // Save the mirror to get back the constant pool.
3715 reflect->obj_field_put(_oop_offset, mirror);
3716 }
3717
3718 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3719
3720 oop mirror = reflect->obj_field(_oop_offset);
3721 Klass* k = java_lang_Class::as_Klass(mirror);
3722 assert(k->is_instance_klass(), "Must be");
3723
3724 // Get the constant pool back from the klass. Since class redefinition
3725 // merges the new constant pool into the old, this is essentially the
3726 // same constant pool as the original. If constant pool merging is
3727 // no longer done in the future, this will have to change to save
3728 // the original.
3729 return InstanceKlass::cast(k)->constants();
3730 }
3731
3732
3733 // Support for java_lang_ref_Reference
3734
3735 bool java_lang_ref_Reference::_offsets_initialized;
3736
3737 int java_lang_ref_Reference::_referent_offset;
3738 int java_lang_ref_Reference::_queue_offset;
3739 int java_lang_ref_Reference::_next_offset;
3740 int java_lang_ref_Reference::_discovered_offset;
3741
3742 #define REFERENCE_FIELDS_DO(macro) \
3743 macro(_referent_offset, k, "referent", object_signature, false); \
3744 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3745 macro(_next_offset, k, "next", reference_signature, false); \
3746 macro(_discovered_offset, k, "discovered", reference_signature, false);
3747
3748 void java_lang_ref_Reference::compute_offsets() {
3749 if (_offsets_initialized) {
3750 return;
3751 }
3752 _offsets_initialized = true;
3753 InstanceKlass* k = vmClasses::Reference_klass();
3754 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3755 }
3756
3757 #if INCLUDE_CDS
3758 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3759 f->do_bool(&_offsets_initialized);
3760 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3761 }
3762 #endif
3763
3764 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3765 assert(obj != nullptr, "sanity");
3766 if (offset != _referent_offset) {
3767 return false;
3768 }
3769
3770 Klass* k = obj->klass();
3771 if (!k->is_instance_klass()) {
3772 return false;
3773 }
3774
3775 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3776 bool is_reference = ik->reference_type() != REF_NONE;
3777 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3778 return is_reference;
3779 }
3780
3781 int java_lang_boxing_object::_value_offset;
3782 int java_lang_boxing_object::_long_value_offset;
3783
3784 #define BOXING_FIELDS_DO(macro) \
3785 macro(_value_offset, integerKlass, "value", int_signature, false); \
3786 macro(_long_value_offset, longKlass, "value", long_signature, false);
3787
3788 void java_lang_boxing_object::compute_offsets() {
3789 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3790 InstanceKlass* longKlass = vmClasses::Long_klass();
3791 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3792 }
3793
3794 #if INCLUDE_CDS
3795 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3796 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3797 }
3798 #endif
3799
3800 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3801 Klass* k = vmClasses::box_klass(type);
3802 if (k == nullptr) return nullptr;
3803 InstanceKlass* ik = InstanceKlass::cast(k);
3804 if (!ik->is_initialized()) {
3805 ik->initialize(CHECK_NULL);
3806 }
3807 return ik->allocate_instance(THREAD);
3808 }
3809
3810
3811 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3812 oop box = initialize_and_allocate(type, CHECK_NULL);
3813 if (box == nullptr) return nullptr;
3814 switch (type) {
3815 case T_BOOLEAN:
3816 box->bool_field_put(_value_offset, value->z);
3817 break;
3818 case T_CHAR:
3819 box->char_field_put(_value_offset, value->c);
3820 break;
3821 case T_FLOAT:
3822 box->float_field_put(_value_offset, value->f);
3823 break;
3824 case T_DOUBLE:
3825 box->double_field_put(_long_value_offset, value->d);
3826 break;
3827 case T_BYTE:
3828 box->byte_field_put(_value_offset, value->b);
3829 break;
3830 case T_SHORT:
3831 box->short_field_put(_value_offset, value->s);
3832 break;
3833 case T_INT:
3834 box->int_field_put(_value_offset, value->i);
3835 break;
3836 case T_LONG:
3837 box->long_field_put(_long_value_offset, value->j);
3838 break;
3839 default:
3840 return nullptr;
3841 }
3842 return box;
3843 }
3844
3845
3846 BasicType java_lang_boxing_object::basic_type(oop box) {
3847 if (box == nullptr) return T_ILLEGAL;
3848 BasicType type = vmClasses::box_klass_type(box->klass());
3849 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3850 return T_ILLEGAL;
3851 return type;
3852 }
3853
3854
3855 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3856 BasicType type = vmClasses::box_klass_type(box->klass());
3857 switch (type) {
3858 case T_BOOLEAN:
3859 value->z = box->bool_field(_value_offset);
3860 break;
3861 case T_CHAR:
3862 value->c = box->char_field(_value_offset);
3863 break;
3864 case T_FLOAT:
3865 value->f = box->float_field(_value_offset);
3866 break;
3867 case T_DOUBLE:
3868 value->d = box->double_field(_long_value_offset);
3869 break;
3870 case T_BYTE:
3871 value->b = box->byte_field(_value_offset);
3872 break;
3873 case T_SHORT:
3874 value->s = box->short_field(_value_offset);
3875 break;
3876 case T_INT:
3877 value->i = box->int_field(_value_offset);
3878 break;
3879 case T_LONG:
3880 value->j = box->long_field(_long_value_offset);
3881 break;
3882 default:
3883 return T_ILLEGAL;
3884 } // end switch
3885 return type;
3886 }
3887
3888
3889 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3890 BasicType type = vmClasses::box_klass_type(box->klass());
3891 switch (type) {
3892 case T_BOOLEAN:
3893 box->bool_field_put(_value_offset, value->z);
3894 break;
3895 case T_CHAR:
3896 box->char_field_put(_value_offset, value->c);
3897 break;
3898 case T_FLOAT:
3899 box->float_field_put(_value_offset, value->f);
3900 break;
3901 case T_DOUBLE:
3902 box->double_field_put(_long_value_offset, value->d);
3903 break;
3904 case T_BYTE:
3905 box->byte_field_put(_value_offset, value->b);
3906 break;
3907 case T_SHORT:
3908 box->short_field_put(_value_offset, value->s);
3909 break;
3910 case T_INT:
3911 box->int_field_put(_value_offset, value->i);
3912 break;
3913 case T_LONG:
3914 box->long_field_put(_long_value_offset, value->j);
3915 break;
3916 default:
3917 return T_ILLEGAL;
3918 } // end switch
3919 return type;
3920 }
3921
3922
3923 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3924 switch (type) {
3925 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3926 case T_CHAR: st->print("%d", value->c); break;
3927 case T_BYTE: st->print("%d", value->b); break;
3928 case T_SHORT: st->print("%d", value->s); break;
3929 case T_INT: st->print("%d", value->i); break;
3930 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3931 case T_FLOAT: st->print("%f", value->f); break;
3932 case T_DOUBLE: st->print("%lf", value->d); break;
3933 default: st->print("type %d?", type); break;
3934 }
3935 }
3936
3937
3938 // Support for java_lang_ref_SoftReference
3939 //
3940
3941 int java_lang_ref_SoftReference::_timestamp_offset;
3942 int java_lang_ref_SoftReference::_static_clock_offset;
3943
3944 #define SOFTREFERENCE_FIELDS_DO(macro) \
3945 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3946 macro(_static_clock_offset, k, "clock", long_signature, true)
3947
3948 void java_lang_ref_SoftReference::compute_offsets() {
3949 InstanceKlass* k = vmClasses::SoftReference_klass();
3950 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3951 }
3952
3953 #if INCLUDE_CDS
3954 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3955 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3956 }
3957 #endif
3958
3959 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3960 return ref->long_field(_timestamp_offset);
3961 }
3962
3963 jlong java_lang_ref_SoftReference::clock() {
3964 InstanceKlass* ik = vmClasses::SoftReference_klass();
3965 oop base = ik->static_field_base_raw();
3966 return base->long_field(_static_clock_offset);
3967 }
3968
3969 void java_lang_ref_SoftReference::set_clock(jlong value) {
3970 InstanceKlass* ik = vmClasses::SoftReference_klass();
3971 oop base = ik->static_field_base_raw();
3972 base->long_field_put(_static_clock_offset, value);
3973 }
3974
3975 // Support for java_lang_invoke_DirectMethodHandle
3976
3977 int java_lang_invoke_DirectMethodHandle::_member_offset;
3978
3979 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3980 oop member_name = nullptr;
3981 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3982 "a DirectMethodHandle oop is expected");
3983 return dmh->obj_field(_member_offset);
3984 }
3985
3986 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3987 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3988
3989 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3990 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3991 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3992 }
3993
3994 #if INCLUDE_CDS
3995 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3996 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3997 }
3998 #endif
3999
4000 // Support for java_lang_invoke_MethodHandle
4001
4002 int java_lang_invoke_MethodHandle::_type_offset;
4003 int java_lang_invoke_MethodHandle::_form_offset;
4004
4005 int java_lang_invoke_MemberName::_clazz_offset;
4006 int java_lang_invoke_MemberName::_name_offset;
4007 int java_lang_invoke_MemberName::_type_offset;
4008 int java_lang_invoke_MemberName::_flags_offset;
4009 int java_lang_invoke_MemberName::_method_offset;
4010 int java_lang_invoke_MemberName::_vmindex_offset;
4011
4012 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4013 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4014
4015 int java_lang_invoke_LambdaForm::_vmentry_offset;
4016
4017 #define METHODHANDLE_FIELDS_DO(macro) \
4018 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4019 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4020
4021 void java_lang_invoke_MethodHandle::compute_offsets() {
4022 InstanceKlass* k = vmClasses::MethodHandle_klass();
4023 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4024 }
4025
4026 #if INCLUDE_CDS
4027 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4028 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4029 }
4030 #endif
4031
4032 #define MEMBERNAME_FIELDS_DO(macro) \
4033 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4034 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4035 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4036 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4037 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4038
4039 void java_lang_invoke_MemberName::compute_offsets() {
4040 InstanceKlass* k = vmClasses::MemberName_klass();
4041 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4042 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4043 }
4044
4045 #if INCLUDE_CDS
4046 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4047 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4048 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4049 }
4050 #endif
4051
4052 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4053 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4054
4055 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4056 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4057 assert(k != nullptr, "jdk mismatch");
4058 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4059 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4060 }
4061
4062 #if INCLUDE_CDS
4063 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4064 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4065 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4066 }
4067 #endif
4068
4069 #define LAMBDAFORM_FIELDS_DO(macro) \
4070 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4071
4072 void java_lang_invoke_LambdaForm::compute_offsets() {
4073 InstanceKlass* k = vmClasses::LambdaForm_klass();
4074 assert (k != nullptr, "jdk mismatch");
4075 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4076 }
4077
4078 #if INCLUDE_CDS
4079 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4080 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4081 }
4082 #endif
4083
4084 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4085 return obj != nullptr && is_subclass(obj->klass());
4086 }
4087
4088 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4089 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4090
4091 #define NEP_FIELDS_DO(macro) \
4092 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4093 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4094
4095 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4096 return obj != nullptr && is_subclass(obj->klass());
4097 }
4098
4099 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4100 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4101 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4102 }
4103
4104 #if INCLUDE_CDS
4105 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4106 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4107 }
4108 #endif
4109
4110 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4111 return entry->obj_field(_method_type_offset);
4112 }
4113
4114 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4115 return entry->long_field(_downcall_stub_address_offset);
4116 }
4117
4118 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4119 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4120 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4121 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4122 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4123 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4124 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4125
4126 #define ABIDescriptor_FIELDS_DO(macro) \
4127 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4128 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4129 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4130 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4131 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4132 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4133 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4134
4135 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4136 return obj != nullptr && is_subclass(obj->klass());
4137 }
4138
4139 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4140 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4141 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4142 }
4143
4144 #if INCLUDE_CDS
4145 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4146 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4147 }
4148 #endif
4149
4150 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4151 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4152 }
4153
4154 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4155 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4156 }
4157
4158 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4159 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4160 }
4161
4162 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4163 return entry->int_field(_stackAlignment_offset);
4164 }
4165
4166 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4167 return entry->int_field(_shadowSpace_offset);
4168 }
4169
4170 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4171 return entry->obj_field(_scratch1_offset);
4172 }
4173
4174 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4175 return entry->obj_field(_scratch2_offset);
4176 }
4177
4178 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4179 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4180 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4181 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4182
4183 #define VMStorage_FIELDS_DO(macro) \
4184 macro(_type_offset, k, "type", byte_signature, false); \
4185 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4186 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4187 macro(_debugName_offset, k, "debugName", string_signature, false); \
4188
4189 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4190 return obj != nullptr && is_subclass(obj->klass());
4191 }
4192
4193 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4194 InstanceKlass* k = vmClasses::VMStorage_klass();
4195 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4196 }
4197
4198 #if INCLUDE_CDS
4199 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4200 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4201 }
4202 #endif
4203
4204 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4205 return entry->byte_field(_type_offset);
4206 }
4207
4208 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4209 return entry->int_field(_indexOrOffset_offset);
4210 }
4211
4212 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4213 return entry->short_field(_segmentMaskOrSize_offset);
4214 }
4215
4216 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4217 return entry->obj_field(_debugName_offset);
4218 }
4219
4220 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4221 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4222
4223 #define CallConv_FIELDS_DO(macro) \
4224 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4225 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4226
4227 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4228 return obj != nullptr && is_subclass(obj->klass());
4229 }
4230
4231 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4232 InstanceKlass* k = vmClasses::CallConv_klass();
4233 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4234 }
4235
4236 #if INCLUDE_CDS
4237 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4238 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4239 }
4240 #endif
4241
4242 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4243 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4244 }
4245
4246 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4247 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4248 }
4249
4250 oop java_lang_invoke_MethodHandle::type(oop mh) {
4251 return mh->obj_field(_type_offset);
4252 }
4253
4254 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4255 mh->obj_field_put(_type_offset, mtype);
4256 }
4257
4258 oop java_lang_invoke_MethodHandle::form(oop mh) {
4259 assert(_form_offset != 0, "");
4260 return mh->obj_field(_form_offset);
4261 }
4262
4263 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4264 assert(_form_offset != 0, "");
4265 mh->obj_field_put(_form_offset, lform);
4266 }
4267
4268 /// MemberName accessors
4269
4270 oop java_lang_invoke_MemberName::clazz(oop mname) {
4271 assert(is_instance(mname), "wrong type");
4272 return mname->obj_field(_clazz_offset);
4273 }
4274
4275 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4276 assert(is_instance(mname), "wrong type");
4277 mname->obj_field_put(_clazz_offset, clazz);
4278 }
4279
4280 oop java_lang_invoke_MemberName::name(oop mname) {
4281 assert(is_instance(mname), "wrong type");
4282 return mname->obj_field(_name_offset);
4283 }
4284
4285 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4286 assert(is_instance(mname), "wrong type");
4287 mname->obj_field_put(_name_offset, name);
4288 }
4289
4290 oop java_lang_invoke_MemberName::type(oop mname) {
4291 assert(is_instance(mname), "wrong type");
4292 return mname->obj_field(_type_offset);
4293 }
4294
4295 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4296 assert(is_instance(mname), "wrong type");
4297 mname->obj_field_put(_type_offset, type);
4298 }
4299
4300 int java_lang_invoke_MemberName::flags(oop mname) {
4301 assert(is_instance(mname), "wrong type");
4302 return mname->int_field(_flags_offset);
4303 }
4304
4305 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4306 assert(is_instance(mname), "wrong type");
4307 mname->int_field_put(_flags_offset, flags);
4308 }
4309
4310
4311 // Return vmtarget from ResolvedMethodName method field through indirection
4312 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4313 assert(is_instance(mname), "wrong type");
4314 oop method = mname->obj_field(_method_offset);
4315 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4316 }
4317
4318 bool java_lang_invoke_MemberName::is_method(oop mname) {
4319 assert(is_instance(mname), "must be MemberName");
4320 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4321 }
4322
4323 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4324 assert(is_instance(mname), "wrong type");
4325 mname->obj_field_put(_method_offset, resolved_method);
4326 }
4327
4328 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4329 assert(is_instance(mname), "wrong type");
4330 return (intptr_t) mname->address_field(_vmindex_offset);
4331 }
4332
4333 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4334 assert(is_instance(mname), "wrong type");
4335 mname->address_field_put(_vmindex_offset, (address) index);
4336 }
4337
4338
4339 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4340 assert(is_instance(resolved_method), "wrong type");
4341 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4342 assert(m->is_method(), "must be");
4343 return m;
4344 }
4345
4346 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4347 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4348 assert(is_instance(resolved_method), "wrong type");
4349 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4350 }
4351
4352 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4353 assert(is_instance(resolved_method), "wrong type");
4354 resolved_method->obj_field_put(_vmholder_offset, holder);
4355 }
4356
4357 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4358 const Method* method = m();
4359
4360 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4361 oop resolved_method = ResolvedMethodTable::find_method(method);
4362 if (resolved_method != nullptr) {
4363 return resolved_method;
4364 }
4365
4366 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4367 if (!k->is_initialized()) {
4368 k->initialize(CHECK_NULL);
4369 }
4370
4371 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4372
4373 NoSafepointVerifier nsv;
4374
4375 if (method->is_old()) {
4376 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4377 method->get_new_method();
4378 }
4379
4380 InstanceKlass* holder = method->method_holder();
4381
4382 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4383 // Add a reference to the loader (actually mirror because hidden classes may not have
4384 // distinct loaders) to ensure the metadata is kept alive.
4385 // This mirror may be different than the one in clazz field.
4386 set_vmholder(new_resolved_method, holder->java_mirror());
4387
4388 // Set flag in class to indicate this InstanceKlass has entries in the table
4389 // to avoid walking table during redefinition if none of the redefined classes
4390 // have any membernames in the table.
4391 holder->set_has_resolved_methods();
4392
4393 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4394 }
4395
4396 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4397 assert(is_instance(lform), "wrong type");
4398 return lform->obj_field(_vmentry_offset);
4399 }
4400
4401
4402 // Support for java_lang_invoke_MethodType
4403
4404 int java_lang_invoke_MethodType::_rtype_offset;
4405 int java_lang_invoke_MethodType::_ptypes_offset;
4406
4407 #define METHODTYPE_FIELDS_DO(macro) \
4408 macro(_rtype_offset, k, "rtype", class_signature, false); \
4409 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4410
4411 void java_lang_invoke_MethodType::compute_offsets() {
4412 InstanceKlass* k = vmClasses::MethodType_klass();
4413 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4414 }
4415
4416 #if INCLUDE_CDS
4417 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4418 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4419 }
4420 #endif
4421
4422 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4423 st->print("(");
4424 objArrayOop pts = ptypes(mt);
4425 if (pts != nullptr) {
4426 for (int i = 0, limit = pts->length(); i < limit; i++) {
4427 java_lang_Class::print_signature(pts->obj_at(i), st);
4428 }
4429 } else {
4430 st->print("null");
4431 }
4432 st->print(")");
4433 oop rt = rtype(mt);
4434 if (rt != nullptr) {
4435 java_lang_Class::print_signature(rt, st);
4436 } else {
4437 st->print("null");
4438 }
4439 }
4440
4441 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4442 ResourceMark rm;
4443 stringStream buffer(128);
4444 print_signature(mt, &buffer);
4445 const char* sigstr = buffer.base();
4446 int siglen = (int) buffer.size();
4447 Symbol *name;
4448 if (!intern_if_not_found) {
4449 name = SymbolTable::probe(sigstr, siglen);
4450 } else {
4451 name = SymbolTable::new_symbol(sigstr, siglen);
4452 }
4453 return name;
4454 }
4455
4456 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4457 if (mt1 == mt2)
4458 return true;
4459 if (rtype(mt1) != rtype(mt2))
4460 return false;
4461 if (ptype_count(mt1) != ptype_count(mt2))
4462 return false;
4463 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4464 if (ptype(mt1, i) != ptype(mt2, i))
4465 return false;
4466 }
4467 return true;
4468 }
4469
4470 oop java_lang_invoke_MethodType::rtype(oop mt) {
4471 assert(is_instance(mt), "must be a MethodType");
4472 return mt->obj_field(_rtype_offset);
4473 }
4474
4475 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4476 assert(is_instance(mt), "must be a MethodType");
4477 return (objArrayOop) mt->obj_field(_ptypes_offset);
4478 }
4479
4480 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4481 return ptypes(mt)->obj_at(idx);
4482 }
4483
4484 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4485 return ptypes(mt)->length();
4486 }
4487
4488 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4489 objArrayOop pts = ptypes(mt);
4490 int count = pts->length();
4491 int slots = 0;
4492 for (int i = 0; i < count; i++) {
4493 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4494 slots += type2size[bt];
4495 }
4496 return slots;
4497 }
4498
4499 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4500 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4501 return type2size[bt];
4502 }
4503
4504
4505 // Support for java_lang_invoke_CallSite
4506
4507 int java_lang_invoke_CallSite::_target_offset;
4508 int java_lang_invoke_CallSite::_context_offset;
4509
4510 #define CALLSITE_FIELDS_DO(macro) \
4511 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4512 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4513
4514 void java_lang_invoke_CallSite::compute_offsets() {
4515 InstanceKlass* k = vmClasses::CallSite_klass();
4516 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4517 }
4518
4519 #if INCLUDE_CDS
4520 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4521 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4522 }
4523 #endif
4524
4525 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4526 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4527
4528 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4529 return dep_oop;
4530 }
4531
4532 // Support for java_lang_invoke_ConstantCallSite
4533
4534 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4535
4536 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4537 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4538
4539 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4540 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4541 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4542 }
4543
4544 #if INCLUDE_CDS
4545 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4546 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4547 }
4548 #endif
4549
4550 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4551
4552 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4553 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4554
4555 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4556 InstanceKlass* k = vmClasses::Context_klass();
4557 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4558 }
4559
4560 #if INCLUDE_CDS
4561 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4562 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4563 }
4564 #endif
4565
4566 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4567 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4568 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4569 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4570 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4571 return dep_ctx;
4572 }
4573
4574 // Support for java_security_AccessControlContext
4575
4576 int java_security_AccessControlContext::_context_offset;
4577 int java_security_AccessControlContext::_privilegedContext_offset;
4578 int java_security_AccessControlContext::_isPrivileged_offset;
4579 int java_security_AccessControlContext::_isAuthorized_offset;
4580
4581 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4582 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4583 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4584 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4585 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4586
4587 void java_security_AccessControlContext::compute_offsets() {
4588 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4589 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4590 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4591 }
4592
4593 #if INCLUDE_CDS
4594 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4595 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4596 }
4597 #endif
4598
4599 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4600 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4601 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4602 // Ensure klass is initialized
4603 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4604 // Allocate result
4605 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4606 // Fill in values
4607 result->obj_field_put(_context_offset, context());
4608 result->obj_field_put(_privilegedContext_offset, privileged_context());
4609 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4610 result->bool_field_put(_isAuthorized_offset, true);
4611 return result;
4612 }
4613
4614
4615 // Support for java_lang_ClassLoader
4616
4617 int java_lang_ClassLoader::_loader_data_offset;
4618 int java_lang_ClassLoader::_parallelCapable_offset;
4619 int java_lang_ClassLoader::_name_offset;
4620 int java_lang_ClassLoader::_nameAndId_offset;
4621 int java_lang_ClassLoader::_unnamedModule_offset;
4622 int java_lang_ClassLoader::_parent_offset;
4623
4624 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4625 assert(loader != nullptr, "loader must not be null");
4626 assert(oopDesc::is_oop(loader), "loader must be oop");
4627 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4628 }
4629
4630 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4631 assert(loader != nullptr, "loader must not be null");
4632 assert(oopDesc::is_oop(loader), "loader must be oop");
4633 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4634 }
4635
4636 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4637 assert(loader != nullptr, "loader must not be null");
4638 assert(oopDesc::is_oop(loader), "loader must be oop");
4639 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4640 }
4641
4642 #define CLASSLOADER_FIELDS_DO(macro) \
4643 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4644 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4645 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4646 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4647 macro(_parent_offset, k1, "parent", classloader_signature, false)
4648
4649 void java_lang_ClassLoader::compute_offsets() {
4650 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4651 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4652
4653 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4654 }
4655
4656 #if INCLUDE_CDS
4657 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4658 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4659 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4660 }
4661 #endif
4662
4663 oop java_lang_ClassLoader::parent(oop loader) {
4664 assert(is_instance(loader), "loader must be oop");
4665 return loader->obj_field(_parent_offset);
4666 }
4667
4668 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4669 assert(is_instance(loader), "loader must be oop");
4670 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4671 }
4672
4673 // Returns the name field of this class loader. If the name field has not
4674 // been set, null will be returned.
4675 oop java_lang_ClassLoader::name(oop loader) {
4676 assert(is_instance(loader), "loader must be oop");
4677 return loader->obj_field(_name_offset);
4678 }
4679
4680 // Returns the nameAndId field of this class loader. The format is
4681 // as follows:
4682 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4683 // If the defining loader has no name then <qualified-class-name> @<id>
4684 // If built-in loader, then omit '@<id>' as there is only one instance.
4685 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4686 oop java_lang_ClassLoader::nameAndId(oop loader) {
4687 assert(is_instance(loader), "loader must be oop");
4688 return loader->obj_field(_nameAndId_offset);
4689 }
4690
4691 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4692 assert(is_instance(loader), "loader must be oop");
4693 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4694 oop acl = loader;
4695 debug_only(jint loop_count = 0);
4696 // This loop taken verbatim from ClassLoader.java:
4697 do {
4698 acl = parent(acl);
4699 if (cl == acl) {
4700 return true;
4701 }
4702 assert(++loop_count > 0, "loop_count overflow");
4703 } while (acl != nullptr);
4704 return false;
4705 }
4706
4707 bool java_lang_ClassLoader::is_instance(oop obj) {
4708 return obj != nullptr && is_subclass(obj->klass());
4709 }
4710
4711
4712 // For class loader classes, parallelCapable defined
4713 // based on non-null field
4714 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4715 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4716 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4717 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4718 }
4719
4720 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4721 // Fix for 4474172; see evaluation for more details
4722 loader = non_reflection_class_loader(loader);
4723
4724 oop cl = SystemDictionary::java_system_loader();
4725 while(cl != nullptr) {
4726 if (cl == loader) return true;
4727 cl = parent(cl);
4728 }
4729 return false;
4730 }
4731
4732 // Return true if this is one of the class loaders associated with
4733 // the generated bytecodes for serialization constructor returned
4734 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
4735 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4736 if (loader != nullptr) {
4737 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4738 // This might be null in non-1.4 JDKs
4739 return (delegating_cl_class != nullptr && loader->is_a(delegating_cl_class));
4740 }
4741 return false;
4742 }
4743
4744 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4745 // See whether this is one of the class loaders associated with
4746 // the generated bytecodes for reflection, and if so, "magically"
4747 // delegate to its parent to prevent class loading from occurring
4748 // in places where applications using reflection didn't expect it.
4749 if (is_reflection_class_loader(loader)) {
4750 return parent(loader);
4751 }
4752 return loader;
4753 }
4754
4755 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4756 assert(is_instance(loader), "loader must be oop");
4757 return loader->obj_field(_unnamedModule_offset);
4758 }
4759
4760 // Support for java_lang_System
4761 //
4762
4763 int java_lang_System::_static_in_offset;
4764 int java_lang_System::_static_out_offset;
4765 int java_lang_System::_static_err_offset;
4766 int java_lang_System::_static_security_offset;
4767 int java_lang_System::_static_allow_security_offset;
4768 int java_lang_System::_static_never_offset;
4769
4770 #define SYSTEM_FIELDS_DO(macro) \
4771 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4772 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4773 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4774 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4775 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4776 macro(_static_never_offset, k, "NEVER", int_signature, true)
4777
4778 void java_lang_System::compute_offsets() {
4779 InstanceKlass* k = vmClasses::System_klass();
4780 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4781 }
4782
4783 // This field tells us that a security manager can never be installed so we
4784 // can completely skip populating the ProtectionDomainCacheTable.
4785 bool java_lang_System::allow_security_manager() {
4786 static int initialized = false;
4787 static bool allowed = true; // default
4788 if (!initialized) {
4789 oop base = vmClasses::System_klass()->static_field_base_raw();
4790 int never = base->int_field(_static_never_offset);
4791 allowed = (base->int_field(_static_allow_security_offset) != never);
4792 initialized = true;
4793 }
4794 return allowed;
4795 }
4796
4797 // This field tells us that a security manager is installed.
4798 bool java_lang_System::has_security_manager() {
4799 oop base = vmClasses::System_klass()->static_field_base_raw();
4800 return base->obj_field(_static_security_offset) != nullptr;
4801 }
4802
4803 #if INCLUDE_CDS
4804 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4805 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4806 }
4807 #endif
4808
4809 // Support for jdk_internal_misc_UnsafeConstants
4810 //
4811 class UnsafeConstantsFixup : public FieldClosure {
4812 private:
4813 int _address_size;
4814 int _page_size;
4815 bool _big_endian;
4816 bool _use_unaligned_access;
4817 int _data_cache_line_flush_size;
4818 public:
4819 UnsafeConstantsFixup() {
4820 // round up values for all static final fields
4821 _address_size = sizeof(void*);
4822 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4823 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4824 _use_unaligned_access = UseUnalignedAccesses;
4825 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4826 }
4827
4828 void do_field(fieldDescriptor* fd) {
4829 oop mirror = fd->field_holder()->java_mirror();
4830 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4831 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4832 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4833 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4834 if (fd->name() == vmSymbols::address_size_name()) {
4835 mirror->int_field_put(fd->offset(), _address_size);
4836 } else if (fd->name() == vmSymbols::page_size_name()) {
4837 mirror->int_field_put(fd->offset(), _page_size);
4838 } else if (fd->name() == vmSymbols::big_endian_name()) {
4839 mirror->bool_field_put(fd->offset(), _big_endian);
4840 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4841 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4842 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4843 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4844 } else {
4845 assert(false, "unexpected UnsafeConstants field");
4846 }
4847 }
4848 };
4849
4850 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4851 UnsafeConstantsFixup fixup;
4852 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4853 }
4854
4855
4856 // java_lang_StackTraceElement
4857
4858 int java_lang_StackTraceElement::_methodName_offset;
4859 int java_lang_StackTraceElement::_fileName_offset;
4860 int java_lang_StackTraceElement::_lineNumber_offset;
4861 int java_lang_StackTraceElement::_moduleName_offset;
4862 int java_lang_StackTraceElement::_moduleVersion_offset;
4863 int java_lang_StackTraceElement::_classLoaderName_offset;
4864 int java_lang_StackTraceElement::_declaringClass_offset;
4865 int java_lang_StackTraceElement::_declaringClassObject_offset;
4866
4867 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4868 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4869 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4870 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4871 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4872 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4873 macro(_methodName_offset, k, "methodName", string_signature, false); \
4874 macro(_fileName_offset, k, "fileName", string_signature, false); \
4875 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4876
4877 // Support for java_lang_StackTraceElement
4878 void java_lang_StackTraceElement::compute_offsets() {
4879 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4880 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4881 }
4882
4883 #if INCLUDE_CDS
4884 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4885 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4886 }
4887 #endif
4888
4889 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4890 element->obj_field_put(_fileName_offset, value);
4891 }
4892
4893 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4894 element->obj_field_put(_declaringClass_offset, value);
4895 }
4896
4897 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4898 element->obj_field_put(_methodName_offset, value);
4899 }
4900
4901 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4902 element->int_field_put(_lineNumber_offset, value);
4903 }
4904
4905 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4906 element->obj_field_put(_moduleName_offset, value);
4907 }
4908
4909 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4910 element->obj_field_put(_moduleVersion_offset, value);
4911 }
4912
4913 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4914 element->obj_field_put(_classLoaderName_offset, value);
4915 }
4916
4917 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4918 element->obj_field_put(_declaringClassObject_offset, value);
4919 }
4920
4921
4922 // java_lang_AssertionStatusDirectives
4923
4924 int java_lang_AssertionStatusDirectives::_classes_offset;
4925 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4926 int java_lang_AssertionStatusDirectives::_packages_offset;
4927 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4928 int java_lang_AssertionStatusDirectives::_deflt_offset;
4929
4930 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4931 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4932 macro(_classes_offset, k, "classes", string_array_signature, false); \
4933 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4934 macro(_packages_offset, k, "packages", string_array_signature, false); \
4935 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4936 macro(_deflt_offset, k, "deflt", bool_signature, false)
4937
4938 void java_lang_AssertionStatusDirectives::compute_offsets() {
4939 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4940 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4941 }
4942
4943 #if INCLUDE_CDS
4944 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4945 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4946 }
4947 #endif
4948
4949 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4950 o->obj_field_put(_classes_offset, val);
4951 }
4952
4953 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4954 o->obj_field_put(_classEnabled_offset, val);
4955 }
4956
4957 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4958 o->obj_field_put(_packages_offset, val);
4959 }
4960
4961 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4962 o->obj_field_put(_packageEnabled_offset, val);
4963 }
4964
4965 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4966 o->bool_field_put(_deflt_offset, val);
4967 }
4968
4969 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4970
4971 #define AOS_FIELDS_DO(macro) \
4972 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4973
4974 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4975 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4976 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4977 }
4978
4979 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4980 assert(_owner_offset != 0, "Must be initialized");
4981 return obj->obj_field(_owner_offset);
4982 }
4983
4984 #if INCLUDE_CDS
4985 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4986 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4987 }
4988 #endif
4989
4990 int vector_VectorPayload::_payload_offset;
4991
4992 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4993 macro(_payload_offset, k, "payload", object_signature, false)
4994
4995 void vector_VectorPayload::compute_offsets() {
4996 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
4997 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4998 }
4999
5000 #if INCLUDE_CDS
5001 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5002 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5003 }
5004 #endif
5005
5006 void vector_VectorPayload::set_payload(oop o, oop val) {
5007 o->obj_field_put(_payload_offset, val);
5008 }
5009
5010 bool vector_VectorPayload::is_instance(oop obj) {
5011 return obj != nullptr && is_subclass(obj->klass());
5012 }
5013
5014 int java_lang_Integer_IntegerCache::_static_cache_offset;
5015 int java_lang_Long_LongCache::_static_cache_offset;
5016 int java_lang_Character_CharacterCache::_static_cache_offset;
5017 int java_lang_Short_ShortCache::_static_cache_offset;
5018 int java_lang_Byte_ByteCache::_static_cache_offset;
5019
5020 #define INTEGER_CACHE_FIELDS_DO(macro) \
5021 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5022
5023 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5024 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5025 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5026 }
5027
5028 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5029 oop base = ik->static_field_base_raw();
5030 return objArrayOop(base->obj_field(_static_cache_offset));
5031 }
5032
5033 Symbol* java_lang_Integer_IntegerCache::symbol() {
5034 return vmSymbols::java_lang_Integer_IntegerCache();
5035 }
5036
5037 #if INCLUDE_CDS
5038 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5039 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5040 }
5041 #endif
5042 #undef INTEGER_CACHE_FIELDS_DO
5043
5044 jint java_lang_Integer::value(oop obj) {
5045 jvalue v;
5046 java_lang_boxing_object::get_value(obj, &v);
5047 return v.i;
5048 }
5049
5050 #define LONG_CACHE_FIELDS_DO(macro) \
5051 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5052
5053 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5054 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5055 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5056 }
5057
5058 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5059 oop base = ik->static_field_base_raw();
5060 return objArrayOop(base->obj_field(_static_cache_offset));
5061 }
5062
5063 Symbol* java_lang_Long_LongCache::symbol() {
5064 return vmSymbols::java_lang_Long_LongCache();
5065 }
5066
5067 #if INCLUDE_CDS
5068 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5069 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5070 }
5071 #endif
5072 #undef LONG_CACHE_FIELDS_DO
5073
5074 jlong java_lang_Long::value(oop obj) {
5075 jvalue v;
5076 java_lang_boxing_object::get_value(obj, &v);
5077 return v.j;
5078 }
5079
5080 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5081 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5082
5083 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5084 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5085 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5086 }
5087
5088 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5089 oop base = ik->static_field_base_raw();
5090 return objArrayOop(base->obj_field(_static_cache_offset));
5091 }
5092
5093 Symbol* java_lang_Character_CharacterCache::symbol() {
5094 return vmSymbols::java_lang_Character_CharacterCache();
5095 }
5096
5097 #if INCLUDE_CDS
5098 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5099 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5100 }
5101 #endif
5102 #undef CHARACTER_CACHE_FIELDS_DO
5103
5104 jchar java_lang_Character::value(oop obj) {
5105 jvalue v;
5106 java_lang_boxing_object::get_value(obj, &v);
5107 return v.c;
5108 }
5109
5110 #define SHORT_CACHE_FIELDS_DO(macro) \
5111 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5112
5113 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5114 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5115 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5116 }
5117
5118 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5119 oop base = ik->static_field_base_raw();
5120 return objArrayOop(base->obj_field(_static_cache_offset));
5121 }
5122
5123 Symbol* java_lang_Short_ShortCache::symbol() {
5124 return vmSymbols::java_lang_Short_ShortCache();
5125 }
5126
5127 #if INCLUDE_CDS
5128 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5129 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5130 }
5131 #endif
5132 #undef SHORT_CACHE_FIELDS_DO
5133
5134 jshort java_lang_Short::value(oop obj) {
5135 jvalue v;
5136 java_lang_boxing_object::get_value(obj, &v);
5137 return v.s;
5138 }
5139
5140 #define BYTE_CACHE_FIELDS_DO(macro) \
5141 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5142
5143 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5144 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5145 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5146 }
5147
5148 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5149 oop base = ik->static_field_base_raw();
5150 return objArrayOop(base->obj_field(_static_cache_offset));
5151 }
5152
5153 Symbol* java_lang_Byte_ByteCache::symbol() {
5154 return vmSymbols::java_lang_Byte_ByteCache();
5155 }
5156
5157 #if INCLUDE_CDS
5158 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5159 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5160 }
5161 #endif
5162 #undef BYTE_CACHE_FIELDS_DO
5163
5164 jbyte java_lang_Byte::value(oop obj) {
5165 jvalue v;
5166 java_lang_boxing_object::get_value(obj, &v);
5167 return v.b;
5168 }
5169
5170 int java_lang_Boolean::_static_TRUE_offset;
5171 int java_lang_Boolean::_static_FALSE_offset;
5172
5173 #define BOOLEAN_FIELDS_DO(macro) \
5174 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5175 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5176
5177
5178 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5179 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5180 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5181 }
5182
5183 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5184 oop base = ik->static_field_base_raw();
5185 return base->obj_field(_static_TRUE_offset);
5186 }
5187
5188 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5189 oop base = ik->static_field_base_raw();
5190 return base->obj_field(_static_FALSE_offset);
5191 }
5192
5193 Symbol* java_lang_Boolean::symbol() {
5194 return vmSymbols::java_lang_Boolean();
5195 }
5196
5197 #if INCLUDE_CDS
5198 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5199 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5200 }
5201 #endif
5202 #undef BOOLEAN_CACHE_FIELDS_DO
5203
5204 jboolean java_lang_Boolean::value(oop obj) {
5205 jvalue v;
5206 java_lang_boxing_object::get_value(obj, &v);
5207 return v.z;
5208 }
5209
5210 // java_lang_reflect_RecordComponent
5211
5212 int java_lang_reflect_RecordComponent::_clazz_offset;
5213 int java_lang_reflect_RecordComponent::_name_offset;
5214 int java_lang_reflect_RecordComponent::_type_offset;
5215 int java_lang_reflect_RecordComponent::_accessor_offset;
5216 int java_lang_reflect_RecordComponent::_signature_offset;
5217 int java_lang_reflect_RecordComponent::_annotations_offset;
5218 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5219
5220 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5221 macro(_clazz_offset, k, "clazz", class_signature, false); \
5222 macro(_name_offset, k, "name", string_signature, false); \
5223 macro(_type_offset, k, "type", class_signature, false); \
5224 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5225 macro(_signature_offset, k, "signature", string_signature, false); \
5226 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5227 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5228
5229 // Support for java_lang_reflect_RecordComponent
5230 void java_lang_reflect_RecordComponent::compute_offsets() {
5231 InstanceKlass* k = vmClasses::RecordComponent_klass();
5232 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5233 }
5234
5235 #if INCLUDE_CDS
5236 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5237 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5238 }
5239 #endif
5240
5241 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5242 element->obj_field_put(_clazz_offset, value);
5243 }
5244
5245 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5246 element->obj_field_put(_name_offset, value);
5247 }
5248
5249 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5250 element->obj_field_put(_type_offset, value);
5251 }
5252
5253 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5254 element->obj_field_put(_accessor_offset, value);
5255 }
5256
5257 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5258 element->obj_field_put(_signature_offset, value);
5259 }
5260
5261 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5262 element->obj_field_put(_annotations_offset, value);
5263 }
5264
5265 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5266 element->obj_field_put(_typeAnnotations_offset, value);
5267 }
5268
5269 // java_lang_InternalError
5270 int java_lang_InternalError::_during_unsafe_access_offset;
5271
5272 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5273 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5274 }
5275
5276 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5277 return internal_error->bool_field(_during_unsafe_access_offset);
5278 }
5279
5280 void java_lang_InternalError::compute_offsets() {
5281 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5282 }
5283
5284 #if INCLUDE_CDS
5285 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5286 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5287 }
5288 #endif
5289
5290 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5291 f(java_lang_Class) \
5292 f(java_lang_String) \
5293 f(java_lang_ref_Reference) \
5294 //end
5295
5296 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5297 f(java_lang_System) \
5298 f(java_lang_ClassLoader) \
5299 f(java_lang_Throwable) \
5300 f(java_lang_Thread) \
5301 f(java_lang_Thread_FieldHolder) \
5302 f(java_lang_Thread_Constants) \
5303 f(java_lang_ThreadGroup) \
5304 f(java_lang_VirtualThread) \
5305 f(java_lang_InternalError) \
5306 f(java_lang_AssertionStatusDirectives) \
5307 f(java_lang_ref_SoftReference) \
5308 f(java_lang_invoke_MethodHandle) \
5309 f(java_lang_invoke_DirectMethodHandle) \
5310 f(java_lang_invoke_MemberName) \
5311 f(java_lang_invoke_ResolvedMethodName) \
5312 f(java_lang_invoke_LambdaForm) \
5313 f(java_lang_invoke_MethodType) \
5314 f(java_lang_invoke_CallSite) \
5315 f(java_lang_invoke_ConstantCallSite) \
5316 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5317 f(java_security_AccessControlContext) \
5318 f(java_lang_reflect_AccessibleObject) \
5319 f(java_lang_reflect_Method) \
5320 f(java_lang_reflect_Constructor) \
5321 f(java_lang_reflect_Field) \
5322 f(java_lang_reflect_RecordComponent) \
5323 f(reflect_ConstantPool) \
5324 f(java_lang_reflect_Parameter) \
5325 f(java_lang_Module) \
5326 f(java_lang_StackTraceElement) \
5327 f(java_lang_ClassFrameInfo) \
5328 f(java_lang_StackFrameInfo) \
5329 f(java_lang_LiveStackFrameInfo) \
5330 f(jdk_internal_vm_ContinuationScope) \
5331 f(jdk_internal_vm_Continuation) \
5332 f(jdk_internal_vm_StackChunk) \
5333 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5334 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5335 f(jdk_internal_foreign_abi_ABIDescriptor) \
5336 f(jdk_internal_foreign_abi_VMStorage) \
5337 f(jdk_internal_foreign_abi_CallConv) \
5338 f(jdk_internal_misc_UnsafeConstants) \
5339 f(java_lang_boxing_object) \
5340 f(vector_VectorPayload) \
5341 //end
5342
5343 #define BASIC_JAVA_CLASSES_DO(f) \
5344 BASIC_JAVA_CLASSES_DO_PART1(f) \
5345 BASIC_JAVA_CLASSES_DO_PART2(f)
5346
5347 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5348
5349 // Compute field offsets of all the classes in this file
5350 void JavaClasses::compute_offsets() {
5351 if (UseSharedSpaces) {
5352 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5353 JvmtiExport::has_early_class_hook_env()),
5354 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5355 // None of the classes used by the rest of this function can be replaced by
5356 // JVMTI ClassFileLoadHook.
5357 // We are safe to use the archived offsets, which have already been restored
5358 // by JavaClasses::serialize_offsets, without computing the offsets again.
5359 return;
5360 }
5361
5362 // We have already called the compute_offsets() of the
5363 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5364 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5365 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5366 }
5367
5368 #if INCLUDE_CDS
5369 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5370
5371 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5372 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5373 }
5374 #endif
5375
5376 #if INCLUDE_CDS_JAVA_HEAP
5377 bool JavaClasses::is_supported_for_archiving(oop obj) {
5378 Klass* klass = obj->klass();
5379
5380 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5381 #if 0
5382 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5383 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5384 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5385 // So for now we cannot not support these classes for archiving.
5386 //
5387 // These objects typically are not referenced by static fields, but rather by resolved
5388 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5389 klass == vmClasses::ResolvedMethodName_klass() ||
5390 klass == vmClasses::MemberName_klass() ||
5391 klass == vmClasses::Context_klass() ||
5392 #endif
5393 // It's problematic to archive Reference objects. One of the reasons is that
5394 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5395 klass->is_subclass_of(vmClasses::Reference_klass())) {
5396 return false;
5397 }
5398
5399 return true;
5400 }
5401 #endif
5402
5403 #ifndef PRODUCT
5404
5405 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5406
5407 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5408 const char* field_sig) {
5409 EXCEPTION_MARK;
5410 fieldDescriptor fd;
5411 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5412 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5413 InstanceKlass* ik = InstanceKlass::cast(k);
5414 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5415 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5416 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5417 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5418 return false;
5419 }
5420 if (fd.is_static()) {
5421 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5422 return false;
5423 }
5424 if (fd.offset() == deserialized_offset ) {
5425 return true;
5426 } else {
5427 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5428 klass_name, field_name, deserialized_offset, fd.offset());
5429 return false;
5430 }
5431 }
5432
5433 void JavaClasses::check_offsets() {
5434 bool valid = true;
5435
5436 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5437 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5438
5439 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5440 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5441
5442 // Boxed primitive objects (java_lang_boxing_object)
5443
5444 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5445 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5446 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5447 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5448 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5449 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5450 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5451 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5452
5453 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5454 }
5455
5456 #endif // PRODUCT
5457
5458 int InjectedField::compute_offset() {
5459 InstanceKlass* ik = InstanceKlass::cast(klass());
5460 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5461 if (!may_be_java && !fs.field_flags().is_injected()) {
5462 // Only look at injected fields
5463 continue;
5464 }
5465 if (fs.name() == name() && fs.signature() == signature()) {
5466 return fs.offset();
5467 }
5468 }
5469 ResourceMark rm;
5470 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)" : "");
5471 #ifndef PRODUCT
5472 ik->print();
5473 tty->print_cr("all fields:");
5474 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5475 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5476 }
5477 #endif //PRODUCT
5478 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5479 return -1;
5480 }
5481
5482 void javaClasses_init() {
5483 JavaClasses::compute_offsets();
5484 JavaClasses::check_offsets();
5485 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5486 }