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
797 bool java_lang_Class::_offsets_computed = false;
798 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
799 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
800
801 #ifdef ASSERT
802 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
803 assert(fd->has_initial_value(), "caller should have checked this");
804 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
805 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
806 }
807 #endif
808
809 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
810 DEBUG_ONLY(assert_valid_static_string_field(fd);)
811 oop string = fd->string_initial_value(CHECK);
812 mirror()->obj_field_put(fd->offset(), string);
813 }
814
815 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
816 assert(fd->has_initial_value(), "caller should have checked this");
817 BasicType t = fd->field_type();
818 switch (t) {
819 case T_BYTE:
820 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
821 break;
822 case T_BOOLEAN:
823 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
824 break;
825 case T_CHAR:
826 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
827 break;
828 case T_SHORT:
829 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
830 break;
831 case T_INT:
832 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
833 break;
834 case T_FLOAT:
835 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
836 break;
837 case T_DOUBLE:
838 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
839 break;
840 case T_LONG:
841 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
842 break;
843 default:
844 // Illegal ConstantValue attribute in class file should have been
845 // caught during classfile parsing.
846 ShouldNotReachHere();
847 }
848 }
849
850 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
851 assert(mirror.not_null() && fd->is_static(), "just checking");
852 if (fd->has_initial_value()) {
853 if (fd->field_type() != T_OBJECT) {
854 initialize_static_primitive_field(fd, mirror);
855 } else {
856 initialize_static_string_field(fd, mirror, CHECK);
857 }
858 }
859 }
860
861 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
862 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
863
864 // If the offset was read from the shared archive, it was fixed up already
865 if (!k->is_shared()) {
866 if (k->is_instance_klass()) {
867 // During bootstrap, java.lang.Class wasn't loaded so static field
868 // offsets were computed without the size added it. Go back and
869 // update all the static field offsets to included the size.
870
871 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
872 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
873 // static fields offsets are updated in this array before reencoding everything into
874 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
875
876 int java_fields;
877 int injected_fields;
878 InstanceKlass* ik = InstanceKlass::cast(k);
879 GrowableArray<FieldInfo>* fields =
880 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
881 &java_fields, &injected_fields);
882 for (int i = 0; i < fields->length(); i++) {
883 FieldInfo* fi = fields->adr_at(i);
884 if (fi->access_flags().is_static()) {
885 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
886 }
887 }
888 Array<u1>* old_stream = ik->fieldinfo_stream();
889 assert(fields->length() == (java_fields + injected_fields), "Must be");
890 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
891 ik->set_fieldinfo_stream(new_fis);
892 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
893 }
894 }
895
896 if (k->is_shared() && k->has_archived_mirror_index()) {
897 if (ArchiveHeapLoader::is_in_use()) {
898 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
899 assert(present, "Missing archived mirror for %s", k->external_name());
900 return;
901 } else {
902 k->clear_java_mirror_handle();
903 k->clear_archived_mirror_index();
904 }
905 }
906 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
907 }
908
909 void java_lang_Class::initialize_mirror_fields(Klass* k,
910 Handle mirror,
911 Handle protection_domain,
912 Handle classData,
913 TRAPS) {
914 // Set protection domain also
915 set_protection_domain(mirror(), protection_domain());
916
917 // Initialize static fields
918 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
919
920 // Set classData
921 set_class_data(mirror(), classData());
922 }
923
924 // Set the java.lang.Module module field in the java_lang_Class mirror
925 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
926 if (module.is_null()) {
927 // During startup, the module may be null only if java.base has not been defined yet.
928 // Put the class on the fixup_module_list to patch later when the java.lang.Module
929 // for java.base is known. But note that since we captured the null module another
930 // thread may have completed that initialization.
931
932 bool javabase_was_defined = false;
933 {
934 MutexLocker m1(current, Module_lock);
935 // Keep list of classes needing java.base module fixup
936 if (!ModuleEntryTable::javabase_defined()) {
937 assert(k->java_mirror() != nullptr, "Class's mirror is null");
938 k->class_loader_data()->inc_keep_alive();
939 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
940 fixup_module_field_list()->push(k);
941 } else {
942 javabase_was_defined = true;
943 }
944 }
945
946 // If java.base was already defined then patch this particular class with java.base.
947 if (javabase_was_defined) {
948 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
949 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
950 "Setting class module field, " JAVA_BASE_NAME " should be defined");
951 Handle javabase_handle(current, javabase_entry->module());
952 set_module(mirror(), javabase_handle());
953 }
954 } else {
955 assert(Universe::is_module_initialized() ||
956 (ModuleEntryTable::javabase_defined() &&
957 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
958 "Incorrect java.lang.Module specification while creating mirror");
959 set_module(mirror(), module());
960 }
961 }
962
963 // Statically allocate fixup lists because they always get created.
964 void java_lang_Class::allocate_fixup_lists() {
965 GrowableArray<Klass*>* mirror_list =
966 new (mtClass) GrowableArray<Klass*>(40, mtClass);
967 set_fixup_mirror_list(mirror_list);
968
969 GrowableArray<Klass*>* module_list =
970 new (mtModule) GrowableArray<Klass*>(500, mtModule);
971 set_fixup_module_field_list(module_list);
972 }
973
974 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
975 Handle& mirror, Handle& comp_mirror, TRAPS) {
976 // Allocate mirror (java.lang.Class instance)
977 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
978 mirror = Handle(THREAD, mirror_oop);
979
980 // Setup indirection from mirror->klass
981 set_klass(mirror(), k);
982
983 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
984 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
985
986 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
987
988 // It might also have a component mirror. This mirror must already exist.
989 if (k->is_array_klass()) {
990 if (k->is_typeArray_klass()) {
991 BasicType type = TypeArrayKlass::cast(k)->element_type();
992 if (is_scratch) {
993 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
994 } else {
995 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
996 }
997 } else {
998 assert(k->is_objArray_klass(), "Must be");
999 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1000 assert(element_klass != nullptr, "Must have an element klass");
1001 if (is_scratch) {
1002 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1003 } else {
1004 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1005 }
1006 }
1007 assert(comp_mirror() != nullptr, "must have a mirror");
1008
1009 // Two-way link between the array klass and its component mirror:
1010 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1011 set_component_mirror(mirror(), comp_mirror());
1012 // See below for ordering dependencies between field array_klass in component mirror
1013 // and java_mirror in this klass.
1014 } else {
1015 assert(k->is_instance_klass(), "Must be");
1016
1017 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1018 if (HAS_PENDING_EXCEPTION) {
1019 // If any of the fields throws an exception like OOM remove the klass field
1020 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1021 // This mirror looks like a primitive type, which logically it is because it
1022 // it represents no class.
1023 set_klass(mirror(), nullptr);
1024 return;
1025 }
1026 }
1027 }
1028
1029 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1030 Handle module, Handle protection_domain,
1031 Handle classData, TRAPS) {
1032 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1033 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1034
1035 // Use this moment of initialization to cache modifier_flags also,
1036 // to support Class.getModifiers(). Instance classes recalculate
1037 // the cached flags after the class file is parsed, but before the
1038 // class is put into the system dictionary.
1039 int computed_modifiers = k->compute_modifier_flags();
1040 k->set_modifier_flags(computed_modifiers);
1041 // Class_klass has to be loaded because it is used to allocate
1042 // the mirror.
1043 if (vmClasses::Class_klass_loaded()) {
1044 Handle mirror;
1045 Handle comp_mirror;
1046
1047 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1048
1049 // set the classLoader field in the java_lang_Class instance
1050 assert(class_loader() == k->class_loader(), "should be same");
1051 set_class_loader(mirror(), class_loader());
1052
1053 // Setup indirection from klass->mirror
1054 // after any exceptions can happen during allocations.
1055 k->set_java_mirror(mirror);
1056
1057 // Set the module field in the java_lang_Class instance. This must be done
1058 // after the mirror is set.
1059 set_mirror_module_field(THREAD, k, mirror, module);
1060
1061 if (comp_mirror() != nullptr) {
1062 // Set after k->java_mirror() is published, because compiled code running
1063 // concurrently doesn't expect a k to have a null java_mirror.
1064 release_set_array_klass(comp_mirror(), k);
1065 }
1066 if (CDSConfig::is_dumping_heap()) {
1067 create_scratch_mirror(k, CHECK);
1068 }
1069 } else {
1070 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1071 fixup_mirror_list()->push(k);
1072 }
1073 }
1074
1075 #if INCLUDE_CDS_JAVA_HEAP
1076 // The "scratch mirror" stores the states of the mirror object that can be
1077 // decided at dump time (such as the initial values of the static fields, the
1078 // component mirror, etc). At runtime, more information is added to it by
1079 // java_lang_Class::restore_archived_mirror().
1080 //
1081 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1082 // produces the same result as /*runtime*/create_mirror().
1083 //
1084 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1085 // latter may contain dumptime-specific information that cannot be archived
1086 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1087 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1088 if (k->class_loader() != nullptr &&
1089 k->class_loader() != SystemDictionary::java_platform_loader() &&
1090 k->class_loader() != SystemDictionary::java_system_loader()) {
1091 // We only archive the mirrors of classes loaded by the built-in loaders
1092 return;
1093 }
1094
1095 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1096 Handle mirror;
1097 Handle comp_mirror;
1098 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1099
1100 if (comp_mirror() != nullptr) {
1101 release_set_array_klass(comp_mirror(), k);
1102 }
1103
1104 HeapShared::set_scratch_java_mirror(k, mirror());
1105 }
1106
1107 // Returns true if the mirror is updated, false if no archived mirror
1108 // data is present. After the archived mirror object is restored, the
1109 // shared klass' _has_raw_archived_mirror flag is cleared.
1110 bool java_lang_Class::restore_archived_mirror(Klass *k,
1111 Handle class_loader, Handle module,
1112 Handle protection_domain, TRAPS) {
1113 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1114 // see more details in vmClasses::resolve_all().
1115 if (!vmClasses::Class_klass_loaded()) {
1116 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1117 fixup_mirror_list()->push(k);
1118 return true;
1119 }
1120
1121 oop m = k->archived_java_mirror();
1122 assert(m != nullptr, "must have stored non-null archived mirror");
1123
1124 // Sanity: clear it now to prevent re-initialization if any of the following fails
1125 k->clear_archived_mirror_index();
1126
1127 // mirror is archived, restore
1128 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1129 assert(as_Klass(m) == k, "must be");
1130 Handle mirror(THREAD, m);
1131
1132 if (!k->is_array_klass()) {
1133 // - local static final fields with initial values were initialized at dump time
1134
1135 if (protection_domain.not_null()) {
1136 set_protection_domain(mirror(), protection_domain());
1137 }
1138 }
1139
1140 assert(class_loader() == k->class_loader(), "should be same");
1141 if (class_loader.not_null()) {
1142 set_class_loader(mirror(), class_loader());
1143 }
1144
1145 k->set_java_mirror(mirror);
1146
1147 set_mirror_module_field(THREAD, k, mirror, module);
1148
1149 if (log_is_enabled(Trace, cds, heap, mirror)) {
1150 ResourceMark rm(THREAD);
1151 log_trace(cds, heap, mirror)(
1152 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1153 }
1154
1155 return true;
1156 }
1157 #endif // INCLUDE_CDS_JAVA_HEAP
1158
1159 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1160 assert(_module_offset != 0, "must have been computed already");
1161 set_module(k->java_mirror(), module());
1162 }
1163
1164 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1165 assert(_oop_size_offset != 0, "must be set");
1166 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1167 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1168 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1169 }
1170
1171 int java_lang_Class::static_oop_field_count(oop java_class) {
1172 assert(_static_oop_field_count_offset != 0, "must be set");
1173 return java_class->int_field(_static_oop_field_count_offset);
1174 }
1175
1176 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1177 assert(_static_oop_field_count_offset != 0, "must be set");
1178 java_class->int_field_put(_static_oop_field_count_offset, size);
1179 }
1180
1181 oop java_lang_Class::protection_domain(oop java_class) {
1182 assert(_protection_domain_offset != 0, "must be set");
1183 return java_class->obj_field(_protection_domain_offset);
1184 }
1185 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1186 assert(_protection_domain_offset != 0, "must be set");
1187 java_class->obj_field_put(_protection_domain_offset, pd);
1188 }
1189
1190 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1191 assert(_component_mirror_offset != 0, "must be set");
1192 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1193 }
1194 oop java_lang_Class::component_mirror(oop java_class) {
1195 assert(_component_mirror_offset != 0, "must be set");
1196 return java_class->obj_field(_component_mirror_offset);
1197 }
1198
1199 objArrayOop java_lang_Class::signers(oop java_class) {
1200 assert(_signers_offset != 0, "must be set");
1201 return (objArrayOop)java_class->obj_field(_signers_offset);
1202 }
1203 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1204 assert(_signers_offset != 0, "must be set");
1205 java_class->obj_field_put(_signers_offset, signers);
1206 }
1207
1208 oop java_lang_Class::class_data(oop java_class) {
1209 assert(_classData_offset != 0, "must be set");
1210 return java_class->obj_field(_classData_offset);
1211 }
1212 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1213 assert(_classData_offset != 0, "must be set");
1214 java_class->obj_field_put(_classData_offset, class_data);
1215 }
1216
1217 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1218 assert(_class_loader_offset != 0, "offsets should have been initialized");
1219 java_class->obj_field_put(_class_loader_offset, loader);
1220 }
1221
1222 oop java_lang_Class::class_loader(oop java_class) {
1223 assert(_class_loader_offset != 0, "must be set");
1224 return java_class->obj_field(_class_loader_offset);
1225 }
1226
1227 oop java_lang_Class::module(oop java_class) {
1228 assert(_module_offset != 0, "must be set");
1229 return java_class->obj_field(_module_offset);
1230 }
1231
1232 void java_lang_Class::set_module(oop java_class, oop module) {
1233 assert(_module_offset != 0, "must be set");
1234 java_class->obj_field_put(_module_offset, module);
1235 }
1236
1237 oop java_lang_Class::name(Handle java_class, TRAPS) {
1238 assert(_name_offset != 0, "must be set");
1239 oop o = java_class->obj_field(_name_offset);
1240 if (o == nullptr) {
1241 o = StringTable::intern(as_external_name(java_class()), THREAD);
1242 java_class->obj_field_put(_name_offset, o);
1243 }
1244 return o;
1245 }
1246
1247 oop java_lang_Class::source_file(oop java_class) {
1248 assert(_source_file_offset != 0, "must be set");
1249 return java_class->obj_field(_source_file_offset);
1250 }
1251
1252 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1253 assert(_source_file_offset != 0, "must be set");
1254 java_class->obj_field_put(_source_file_offset, source_file);
1255 }
1256
1257 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1258 // This should be improved by adding a field at the Java level or by
1259 // introducing a new VM klass (see comment in ClassFileParser)
1260 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1261 if (type != T_VOID) {
1262 Klass* aklass = Universe::typeArrayKlass(type);
1263 assert(aklass != nullptr, "correct bootstrap");
1264 release_set_array_klass(java_class, aklass);
1265 }
1266 #ifdef ASSERT
1267 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1268 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1269 #endif
1270 return java_class;
1271 }
1272
1273 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1274 assert(is_instance(java_class), "must be a Class object");
1275 java_class->metadata_field_put(_klass_offset, klass);
1276 }
1277
1278
1279 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1280 assert(is_instance(java_class), "must be a Class object");
1281 Symbol* name = nullptr;
1282 bool is_instance = false;
1283 if (is_primitive(java_class)) {
1284 name = vmSymbols::type_signature(primitive_type(java_class));
1285 } else {
1286 Klass* k = as_Klass(java_class);
1287 is_instance = k->is_instance_klass();
1288 name = k->name();
1289 }
1290 if (name == nullptr) {
1291 st->print("<null>");
1292 return;
1293 }
1294 if (is_instance) st->print("L");
1295 st->write((char*) name->base(), (int) name->utf8_length());
1296 if (is_instance) st->print(";");
1297 }
1298
1299 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1300 assert(is_instance(java_class), "must be a Class object");
1301 Symbol* name;
1302 if (is_primitive(java_class)) {
1303 name = vmSymbols::type_signature(primitive_type(java_class));
1304 // Because this can create a new symbol, the caller has to decrement
1305 // the refcount, so make adjustment here and below for symbols returned
1306 // that are not created or incremented due to a successful lookup.
1307 name->increment_refcount();
1308 } else {
1309 Klass* k = as_Klass(java_class);
1310 if (!k->is_instance_klass()) {
1311 name = k->name();
1312 name->increment_refcount();
1313 } else {
1314 ResourceMark rm;
1315 const char* sigstr = k->signature_name();
1316 int siglen = (int) strlen(sigstr);
1317 if (!intern_if_not_found) {
1318 name = SymbolTable::probe(sigstr, siglen);
1319 } else {
1320 name = SymbolTable::new_symbol(sigstr, siglen);
1321 }
1322 }
1323 }
1324 return name;
1325 }
1326
1327 // Returns the Java name for this Java mirror (Resource allocated)
1328 // See Klass::external_name().
1329 // For primitive type Java mirrors, its type name is returned.
1330 const char* java_lang_Class::as_external_name(oop java_class) {
1331 assert(is_instance(java_class), "must be a Class object");
1332 const char* name = nullptr;
1333 if (is_primitive(java_class)) {
1334 name = type2name(primitive_type(java_class));
1335 } else {
1336 name = as_Klass(java_class)->external_name();
1337 }
1338 if (name == nullptr) {
1339 name = "<null>";
1340 }
1341 return name;
1342 }
1343
1344 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1345 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1346 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1347 return k;
1348 }
1349
1350
1351 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1352 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1353 java_class->release_metadata_field_put(_array_klass_offset, klass);
1354 }
1355
1356
1357 BasicType java_lang_Class::primitive_type(oop java_class) {
1358 assert(is_primitive(java_class), "just checking");
1359 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1360 BasicType type = T_VOID;
1361 if (ak != nullptr) {
1362 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1363 type = ArrayKlass::cast(ak)->element_type();
1364 } else {
1365 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1366 }
1367 #ifdef ASSERT
1368 if (CDSConfig::is_dumping_heap()) {
1369 oop mirror = Universe::java_mirror(type);
1370 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1371 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1372 } else {
1373 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1374 }
1375 #endif
1376 return type;
1377 }
1378
1379 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1380 assert(is_instance(java_class), "must be a Class object");
1381 if (is_primitive(java_class)) {
1382 if (reference_klass != nullptr)
1383 (*reference_klass) = nullptr;
1384 return primitive_type(java_class);
1385 } else {
1386 if (reference_klass != nullptr)
1387 (*reference_klass) = as_Klass(java_class);
1388 return T_OBJECT;
1389 }
1390 }
1391
1392
1393 oop java_lang_Class::primitive_mirror(BasicType t) {
1394 oop mirror = Universe::java_mirror(t);
1395 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1396 assert(is_primitive(mirror), "must be primitive");
1397 return mirror;
1398 }
1399
1400 #define CLASS_FIELDS_DO(macro) \
1401 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1402 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1403 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1404 macro(_module_offset, k, "module", module_signature, false); \
1405 macro(_name_offset, k, "name", string_signature, false); \
1406 macro(_classData_offset, k, "classData", object_signature, false);
1407
1408 void java_lang_Class::compute_offsets() {
1409 if (_offsets_computed) {
1410 return;
1411 }
1412
1413 _offsets_computed = true;
1414
1415 InstanceKlass* k = vmClasses::Class_klass();
1416 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1417
1418 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1419 }
1420
1421 #if INCLUDE_CDS
1422 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1423 f->do_bool(&_offsets_computed);
1424
1425 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1426
1427 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1428 }
1429 #endif
1430
1431 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1432 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1433 return the_class_mirror->int_field(_classRedefinedCount_offset);
1434 }
1435
1436 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1437 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1438 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1439 }
1440
1441
1442 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1443 // platform thread structure, and a eetop offset which was used for thread
1444 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1445 // merged, so in the HotSpot VM we just use the eetop field for the thread
1446 // instead of the privateInfo_offset.
1447 //
1448 // Note: The stackSize field is only present starting in 1.4.
1449
1450 int java_lang_Thread_FieldHolder::_group_offset;
1451 int java_lang_Thread_FieldHolder::_priority_offset;
1452 int java_lang_Thread_FieldHolder::_stackSize_offset;
1453 int java_lang_Thread_FieldHolder::_daemon_offset;
1454 int java_lang_Thread_FieldHolder::_thread_status_offset;
1455
1456 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1457 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1458 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1459 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1460 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1461 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1462
1463 void java_lang_Thread_FieldHolder::compute_offsets() {
1464 assert(_group_offset == 0, "offsets should be initialized only once");
1465
1466 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1467 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1468 }
1469
1470 #if INCLUDE_CDS
1471 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1472 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1473 }
1474 #endif
1475
1476 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1477 return holder->obj_field(_group_offset);
1478 }
1479
1480 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1481 return (ThreadPriority)holder->int_field(_priority_offset);
1482 }
1483
1484 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1485 holder->int_field_put(_priority_offset, priority);
1486 }
1487
1488 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1489 return holder->long_field(_stackSize_offset);
1490 }
1491
1492 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1493 return holder->bool_field(_daemon_offset) != 0;
1494 }
1495
1496 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1497 assert(val, "daemon status is never turned off");
1498 holder->bool_field_put(_daemon_offset, val);
1499 }
1500
1501 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1502 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1503 }
1504
1505 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1506 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1507 }
1508
1509
1510 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1511
1512 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1513 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1514
1515 void java_lang_Thread_Constants::compute_offsets() {
1516 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1517
1518 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1519 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1520 }
1521
1522 #if INCLUDE_CDS
1523 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1524 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1525 }
1526 #endif
1527
1528 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1529 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1530 oop base = k->static_field_base_raw();
1531 return base->obj_field(_static_VTHREAD_GROUP_offset);
1532 }
1533
1534
1535 int java_lang_Thread::_holder_offset;
1536 int java_lang_Thread::_name_offset;
1537 int java_lang_Thread::_contextClassLoader_offset;
1538 int java_lang_Thread::_inheritedAccessControlContext_offset;
1539 int java_lang_Thread::_eetop_offset;
1540 int java_lang_Thread::_jvmti_thread_state_offset;
1541 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1542 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1543 int java_lang_Thread::_interrupted_offset;
1544 int java_lang_Thread::_interruptLock_offset;
1545 int java_lang_Thread::_tid_offset;
1546 int java_lang_Thread::_continuation_offset;
1547 int java_lang_Thread::_park_blocker_offset;
1548 int java_lang_Thread::_scopedValueBindings_offset;
1549 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1550
1551 #define THREAD_FIELDS_DO(macro) \
1552 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1553 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1554 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1555 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1556 macro(_eetop_offset, k, "eetop", long_signature, false); \
1557 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1558 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1559 macro(_tid_offset, k, "tid", long_signature, false); \
1560 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1561 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1562 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1563
1564 void java_lang_Thread::compute_offsets() {
1565 assert(_holder_offset == 0, "offsets should be initialized only once");
1566
1567 InstanceKlass* k = vmClasses::Thread_klass();
1568 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1569 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1570 }
1571
1572 #if INCLUDE_CDS
1573 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1574 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1575 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1576 }
1577 #endif
1578
1579 JavaThread* java_lang_Thread::thread(oop java_thread) {
1580 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1581 }
1582
1583 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1584 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1585 }
1586
1587 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1588 java_thread->address_field_put(_eetop_offset, (address)thread);
1589 }
1590
1591 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1592 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1593 }
1594
1595 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1596 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1597 }
1598
1599 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1600 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1601 }
1602
1603 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1604 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1605 }
1606
1607 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1608 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1609 int val = VTMS_transition_disable_count(java_thread);
1610 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1611 }
1612
1613 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1614 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1615 int val = VTMS_transition_disable_count(java_thread);
1616 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1617 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1618 }
1619
1620 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1621 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1622 }
1623
1624 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1625 assert(is_in_VTMS_transition(java_thread) != val, "already %s transition", val ? "inside" : "outside");
1626 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1627 }
1628
1629 int java_lang_Thread::is_in_VTMS_transition_offset() {
1630 return _jvmti_is_in_VTMS_transition_offset;
1631 }
1632
1633 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1634 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1635 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1636 }
1637
1638 oop java_lang_Thread::holder(oop java_thread) {
1639 // Note: may return null if the thread is still attaching
1640 return java_thread->obj_field(_holder_offset);
1641 }
1642 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1643 return java_thread->obj_field(_interruptLock_offset);
1644 }
1645
1646 bool java_lang_Thread::interrupted(oop java_thread) {
1647 // Make sure the caller can safely access oops.
1648 assert(Thread::current()->is_VM_thread() ||
1649 (JavaThread::current()->thread_state() != _thread_blocked &&
1650 JavaThread::current()->thread_state() != _thread_in_native),
1651 "Unsafe access to oop");
1652 return java_thread->bool_field_volatile(_interrupted_offset);
1653 }
1654
1655 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1656 // Make sure the caller can safely access oops.
1657 assert(Thread::current()->is_VM_thread() ||
1658 (JavaThread::current()->thread_state() != _thread_blocked &&
1659 JavaThread::current()->thread_state() != _thread_in_native),
1660 "Unsafe access to oop");
1661 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1662 }
1663
1664
1665 oop java_lang_Thread::name(oop java_thread) {
1666 return java_thread->obj_field(_name_offset);
1667 }
1668
1669
1670 void java_lang_Thread::set_name(oop java_thread, oop name) {
1671 java_thread->obj_field_put(_name_offset, name);
1672 }
1673
1674 // Convenience macros for setting and getting Thread fields that
1675 // are actually stored in the FieldHolder object of the thread.
1676 // The FieldHolder can be null whilst a thread is attaching via
1677 // JNI, and when the main thread is attaching.
1678
1679 // The default value should be the default/zero initialized value
1680 // of the field as it would be in java.lang.Thread.FieldHolder.
1681 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1682 { \
1683 oop holder = java_lang_Thread::holder(java_thread); \
1684 if (holder != nullptr) \
1685 return java_lang_Thread_FieldHolder::field(holder); \
1686 else \
1687 return default_val; \
1688 }
1689
1690 // We should never be trying to set a field of an attaching thread.
1691 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1692 { \
1693 oop holder = java_lang_Thread::holder(java_thread); \
1694 assert(holder != nullptr, "Thread not fully initialized"); \
1695 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1696 }
1697
1698
1699 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1700 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1701 }
1702
1703
1704 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1705 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1706 }
1707
1708
1709 oop java_lang_Thread::threadGroup(oop java_thread) {
1710 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1711 }
1712
1713
1714 bool java_lang_Thread::is_alive(oop java_thread) {
1715 JavaThread* thr = java_lang_Thread::thread(java_thread);
1716 return (thr != nullptr);
1717 }
1718
1719
1720 bool java_lang_Thread::is_daemon(oop java_thread) {
1721 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1722 }
1723
1724
1725 void java_lang_Thread::set_daemon(oop java_thread) {
1726 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1727 }
1728
1729 oop java_lang_Thread::context_class_loader(oop java_thread) {
1730 return java_thread->obj_field(_contextClassLoader_offset);
1731 }
1732
1733 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1734 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1735 }
1736
1737
1738 jlong java_lang_Thread::stackSize(oop java_thread) {
1739 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1740 }
1741
1742 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1743 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1744 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1745 }
1746
1747 // Read thread status value from threadStatus field in java.lang.Thread java class.
1748 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1749 // Make sure the caller is operating on behalf of the VM or is
1750 // running VM code (state == _thread_in_vm).
1751 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1752 JavaThread::current()->thread_state() == _thread_in_vm,
1753 "Java Thread is not running in vm");
1754 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1755 }
1756
1757 ByteSize java_lang_Thread::thread_id_offset() {
1758 return in_ByteSize(_tid_offset);
1759 }
1760
1761 oop java_lang_Thread::park_blocker(oop java_thread) {
1762 return java_thread->obj_field(_park_blocker_offset);
1763 }
1764
1765 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1766 ThreadsListHandle tlh(JavaThread::current());
1767 JavaThread* thread;
1768 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1769 if (is_virtual) {
1770 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1771 if (carrier_thread == nullptr) {
1772 return nullptr;
1773 }
1774 thread = java_lang_Thread::thread(carrier_thread);
1775 } else {
1776 thread = java_lang_Thread::thread(java_thread);
1777 }
1778 if (thread == nullptr) {
1779 return nullptr;
1780 }
1781
1782 class GetStackTraceClosure : public HandshakeClosure {
1783 public:
1784 const Handle _java_thread;
1785 int _depth;
1786 bool _retry_handshake;
1787 GrowableArray<Method*>* _methods;
1788 GrowableArray<int>* _bcis;
1789
1790 GetStackTraceClosure(Handle java_thread) :
1791 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1792 _methods(nullptr), _bcis(nullptr) {
1793 }
1794 ~GetStackTraceClosure() {
1795 delete _methods;
1796 delete _bcis;
1797 }
1798
1799 bool read_reset_retry() {
1800 bool ret = _retry_handshake;
1801 // If we re-execute the handshake this method need to return false
1802 // when the handshake cannot be performed. (E.g. thread terminating)
1803 _retry_handshake = false;
1804 return ret;
1805 }
1806
1807 void do_thread(Thread* th) {
1808 if (!Thread::current()->is_Java_thread()) {
1809 _retry_handshake = true;
1810 return;
1811 }
1812
1813 JavaThread* thread = JavaThread::cast(th);
1814
1815 if (!thread->has_last_Java_frame()) {
1816 return;
1817 }
1818
1819 bool carrier = false;
1820 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1821 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1822 const ContinuationEntry* ce = thread->vthread_continuation();
1823 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1824 return; // not mounted
1825 }
1826 } else {
1827 carrier = (thread->vthread_continuation() != nullptr);
1828 }
1829
1830 const int max_depth = MaxJavaStackTraceDepth;
1831 const bool skip_hidden = !ShowHiddenFrames;
1832
1833 // Pick minimum length that will cover most cases
1834 int init_length = 64;
1835 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1836 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1837
1838 int total_count = 0;
1839 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1840 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1841 vfst.next()) {
1842
1843 if (skip_hidden && (vfst.method()->is_hidden() ||
1844 vfst.method()->is_continuation_enter_intrinsic())) {
1845 continue;
1846 }
1847
1848 _methods->push(vfst.method());
1849 _bcis->push(vfst.bci());
1850 total_count++;
1851 }
1852
1853 _depth = total_count;
1854 }
1855 };
1856
1857 // Handshake with target
1858 ResourceMark rm(THREAD);
1859 HandleMark hm(THREAD);
1860 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1861 do {
1862 Handshake::execute(&gstc, &tlh, thread);
1863 } while (gstc.read_reset_retry());
1864
1865 // Stop if no stack trace is found.
1866 if (gstc._depth == 0) {
1867 return nullptr;
1868 }
1869
1870 // Convert to StackTraceElement array
1871 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1872 assert(k != nullptr, "must be loaded in 1.4+");
1873 if (k->should_be_initialized()) {
1874 k->initialize(CHECK_NULL);
1875 }
1876 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1877
1878 for (int i = 0; i < gstc._depth; i++) {
1879 methodHandle method(THREAD, gstc._methods->at(i));
1880 oop element = java_lang_StackTraceElement::create(method,
1881 gstc._bcis->at(i),
1882 CHECK_NULL);
1883 trace->obj_at_put(i, element);
1884 }
1885
1886 return trace();
1887 }
1888
1889 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1890 JavaThreadStatus status = get_thread_status(java_thread);
1891 switch (status) {
1892 case JavaThreadStatus::NEW : return "NEW";
1893 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1894 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1895 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1896 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1897 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1898 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1899 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1900 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1901 default : return "UNKNOWN";
1902 };
1903 }
1904 int java_lang_ThreadGroup::_parent_offset;
1905 int java_lang_ThreadGroup::_name_offset;
1906 int java_lang_ThreadGroup::_maxPriority_offset;
1907 int java_lang_ThreadGroup::_daemon_offset;
1908
1909 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1910 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1911 return java_thread_group->obj_field(_parent_offset);
1912 }
1913
1914 // ("name as oop" accessor is not necessary)
1915
1916 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1917 oop name = java_thread_group->obj_field(_name_offset);
1918 // ThreadGroup.name can be null
1919 if (name != nullptr) {
1920 return java_lang_String::as_utf8_string(name);
1921 }
1922 return nullptr;
1923 }
1924
1925 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1926 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1927 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1928 }
1929
1930 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1931 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1932 return java_thread_group->bool_field(_daemon_offset) != 0;
1933 }
1934
1935 #define THREADGROUP_FIELDS_DO(macro) \
1936 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1937 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1938 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1939 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
1940
1941 void java_lang_ThreadGroup::compute_offsets() {
1942 assert(_parent_offset == 0, "offsets should be initialized only once");
1943
1944 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1945 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1946 }
1947
1948 #if INCLUDE_CDS
1949 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1950 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1951 }
1952 #endif
1953
1954
1955 // java_lang_VirtualThread
1956
1957 int java_lang_VirtualThread::static_vthread_scope_offset;
1958 int java_lang_VirtualThread::_carrierThread_offset;
1959 int java_lang_VirtualThread::_continuation_offset;
1960 int java_lang_VirtualThread::_state_offset;
1961 int java_lang_VirtualThread::_next_offset;
1962 int java_lang_VirtualThread::_onWaitingList_offset;
1963 int java_lang_VirtualThread::_recheckInterval_offset;
1964
1965 #define VTHREAD_FIELDS_DO(macro) \
1966 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
1967 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
1968 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1969 macro(_state_offset, k, "state", int_signature, false); \
1970 macro(_next_offset, k, "next", vthread_signature, false); \
1971 macro(_onWaitingList_offset, k, "onWaitingList", byte_signature, false); \
1972 macro(_recheckInterval_offset, k, "recheckInterval", byte_signature, false);
1973
1974
1975 void java_lang_VirtualThread::compute_offsets() {
1976 InstanceKlass* k = vmClasses::VirtualThread_klass();
1977 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1978 }
1979
1980 bool java_lang_VirtualThread::is_instance(oop obj) {
1981 return obj != nullptr && is_subclass(obj->klass());
1982 }
1983
1984 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
1985 oop thread = vthread->obj_field(_carrierThread_offset);
1986 return thread;
1987 }
1988
1989 oop java_lang_VirtualThread::continuation(oop vthread) {
1990 oop cont = vthread->obj_field(_continuation_offset);
1991 return cont;
1992 }
1993
1994 int java_lang_VirtualThread::state(oop vthread) {
1995 return vthread->int_field_acquire(_state_offset);
1996 }
1997
1998 void java_lang_VirtualThread::set_state(oop vthread, int state) {
1999 vthread->release_int_field_put(_state_offset, state);
2000 }
2001
2002 oop java_lang_VirtualThread::next(oop vthread) {
2003 return vthread->obj_field(_next_offset);
2004 }
2005
2006 void java_lang_VirtualThread::set_next(oop vthread, oop next_vthread) {
2007 vthread->obj_field_put(_next_offset, next_vthread);
2008 }
2009
2010 bool java_lang_VirtualThread::set_onWaitingList(oop vthread, OopHandle& list_head) {
2011 uint8_t* addr = vthread->field_addr<uint8_t>(_onWaitingList_offset);
2012 uint8_t value = Atomic::load(addr);
2013 assert(value == 0x00 || value == 0x01, "invariant");
2014 if (value == 0x00) {
2015 value = Atomic::cmpxchg(addr, (uint8_t)0x00, (uint8_t)0x01);
2016 if (value == 0x00) {
2017 for (;;) {
2018 oop head = list_head.resolve();
2019 java_lang_VirtualThread::set_next(vthread, head);
2020 if (list_head.cmpxchg(head, vthread) == head) return true;
2021 }
2022 }
2023 }
2024 return false; // already on waiting list
2025 }
2026
2027 jbyte java_lang_VirtualThread::recheckInterval(oop vthread) {
2028 return vthread->byte_field(_recheckInterval_offset);
2029 }
2030
2031 void java_lang_VirtualThread::set_recheckInterval(oop vthread, jbyte value) {
2032 vthread->release_byte_field_put(_recheckInterval_offset, value);
2033 }
2034
2035 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2036 JavaThreadStatus status = JavaThreadStatus::NEW;
2037 switch (state & ~SUSPENDED) {
2038 case NEW:
2039 status = JavaThreadStatus::NEW;
2040 break;
2041 case STARTED:
2042 case RUNNING:
2043 case PARKING:
2044 case TIMED_PARKING:
2045 case UNPARKED:
2046 case YIELDING:
2047 case YIELDED:
2048 case BLOCKING:
2049 case UNBLOCKED:
2050 status = JavaThreadStatus::RUNNABLE;
2051 break;
2052 case PARKED:
2053 case PINNED:
2054 status = JavaThreadStatus::PARKED;
2055 break;
2056 case TIMED_PARKED:
2057 case TIMED_PINNED:
2058 status = JavaThreadStatus::PARKED_TIMED;
2059 break;
2060 case BLOCKED:
2061 status = JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER;
2062 break;
2063 case TERMINATED:
2064 status = JavaThreadStatus::TERMINATED;
2065 break;
2066 default:
2067 ShouldNotReachHere();
2068 }
2069 return status;
2070 }
2071
2072 bool java_lang_VirtualThread::is_preempted(oop vthread) {
2073 oop continuation = java_lang_VirtualThread::continuation(vthread);
2074 return jdk_internal_vm_Continuation::is_preempted(continuation);
2075 }
2076
2077 #if INCLUDE_CDS
2078 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2079 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2080 }
2081 #endif
2082
2083 // java_lang_Throwable
2084
2085 int java_lang_Throwable::_backtrace_offset;
2086 int java_lang_Throwable::_detailMessage_offset;
2087 int java_lang_Throwable::_stackTrace_offset;
2088 int java_lang_Throwable::_depth_offset;
2089 int java_lang_Throwable::_cause_offset;
2090 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2091
2092 #define THROWABLE_FIELDS_DO(macro) \
2093 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2094 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2095 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2096 macro(_depth_offset, k, "depth", int_signature, false); \
2097 macro(_cause_offset, k, "cause", throwable_signature, false); \
2098 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2099
2100 void java_lang_Throwable::compute_offsets() {
2101 InstanceKlass* k = vmClasses::Throwable_klass();
2102 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2103 }
2104
2105 #if INCLUDE_CDS
2106 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2107 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2108 }
2109 #endif
2110
2111 oop java_lang_Throwable::unassigned_stacktrace() {
2112 InstanceKlass* ik = vmClasses::Throwable_klass();
2113 oop base = ik->static_field_base_raw();
2114 return base->obj_field(_static_unassigned_stacktrace_offset);
2115 }
2116
2117 oop java_lang_Throwable::backtrace(oop throwable) {
2118 return throwable->obj_field_acquire(_backtrace_offset);
2119 }
2120
2121
2122 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2123 throwable->release_obj_field_put(_backtrace_offset, value);
2124 }
2125
2126 int java_lang_Throwable::depth(oop throwable) {
2127 return throwable->int_field(_depth_offset);
2128 }
2129
2130 void java_lang_Throwable::set_depth(oop throwable, int value) {
2131 throwable->int_field_put(_depth_offset, value);
2132 }
2133
2134 oop java_lang_Throwable::message(oop throwable) {
2135 return throwable->obj_field(_detailMessage_offset);
2136 }
2137
2138 oop java_lang_Throwable::cause(oop throwable) {
2139 return throwable->obj_field(_cause_offset);
2140 }
2141
2142 // Return Symbol for detailed_message or null
2143 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2144 PreserveExceptionMark pm(Thread::current());
2145 oop detailed_message = java_lang_Throwable::message(throwable);
2146 if (detailed_message != nullptr) {
2147 return java_lang_String::as_symbol(detailed_message);
2148 }
2149 return nullptr;
2150 }
2151
2152 void java_lang_Throwable::set_message(oop throwable, oop value) {
2153 throwable->obj_field_put(_detailMessage_offset, value);
2154 }
2155
2156
2157 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2158 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2159 }
2160
2161 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2162 set_stacktrace(throwable, nullptr);
2163 }
2164
2165
2166 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2167 ResourceMark rm;
2168 Klass* k = throwable->klass();
2169 assert(k != nullptr, "just checking");
2170 st->print("%s", k->external_name());
2171 oop msg = message(throwable);
2172 if (msg != nullptr) {
2173 st->print(": %s", java_lang_String::as_utf8_string(msg));
2174 }
2175 }
2176
2177 // After this many redefines, the stack trace is unreliable.
2178 const int MAX_VERSION = USHRT_MAX;
2179
2180 static inline bool version_matches(Method* method, int version) {
2181 assert(version < MAX_VERSION, "version is too big");
2182 return method != nullptr && (method->constants()->version() == version);
2183 }
2184
2185 // This class provides a simple wrapper over the internal structure of
2186 // exception backtrace to insulate users of the backtrace from needing
2187 // to know what it looks like.
2188 // The code of this class is not GC safe. Allocations can only happen
2189 // in expand().
2190 class BacktraceBuilder: public StackObj {
2191 friend class BacktraceIterator;
2192 private:
2193 Handle _backtrace;
2194 objArrayOop _head;
2195 typeArrayOop _methods;
2196 typeArrayOop _bcis;
2197 objArrayOop _mirrors;
2198 typeArrayOop _names; // Needed to insulate method name against redefinition.
2199 // True if the top frame of the backtrace is omitted because it shall be hidden.
2200 bool _has_hidden_top_frame;
2201 int _index;
2202 NoSafepointVerifier _nsv;
2203
2204 enum {
2205 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2206 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2207 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2208 trace_names_offset = java_lang_Throwable::trace_names_offset,
2209 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2210 trace_next_offset = java_lang_Throwable::trace_next_offset,
2211 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2212 trace_size = java_lang_Throwable::trace_size,
2213 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2214 };
2215
2216 // get info out of chunks
2217 static typeArrayOop get_methods(objArrayHandle chunk) {
2218 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2219 assert(methods != nullptr, "method array should be initialized in backtrace");
2220 return methods;
2221 }
2222 static typeArrayOop get_bcis(objArrayHandle chunk) {
2223 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2224 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2225 return bcis;
2226 }
2227 static objArrayOop get_mirrors(objArrayHandle chunk) {
2228 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2229 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2230 return mirrors;
2231 }
2232 static typeArrayOop get_names(objArrayHandle chunk) {
2233 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2234 assert(names != nullptr, "names array should be initialized in backtrace");
2235 return names;
2236 }
2237 static bool has_hidden_top_frame(objArrayHandle chunk) {
2238 oop hidden = chunk->obj_at(trace_hidden_offset);
2239 return hidden != nullptr;
2240 }
2241
2242 public:
2243
2244 // constructor for new backtrace
2245 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2246 expand(CHECK);
2247 _backtrace = Handle(THREAD, _head);
2248 _index = 0;
2249 }
2250
2251 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2252 _methods = get_methods(backtrace);
2253 _bcis = get_bcis(backtrace);
2254 _mirrors = get_mirrors(backtrace);
2255 _names = get_names(backtrace);
2256 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2257 assert(_methods->length() == _bcis->length() &&
2258 _methods->length() == _mirrors->length() &&
2259 _mirrors->length() == _names->length(),
2260 "method and source information arrays should match");
2261
2262 // head is the preallocated backtrace
2263 _head = backtrace();
2264 _backtrace = Handle(thread, _head);
2265 _index = 0;
2266 }
2267
2268 void expand(TRAPS) {
2269 objArrayHandle old_head(THREAD, _head);
2270 PauseNoSafepointVerifier pnsv(&_nsv);
2271
2272 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2273 objArrayHandle new_head(THREAD, head);
2274
2275 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2276 typeArrayHandle new_methods(THREAD, methods);
2277
2278 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2279 typeArrayHandle new_bcis(THREAD, bcis);
2280
2281 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2282 objArrayHandle new_mirrors(THREAD, mirrors);
2283
2284 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2285 typeArrayHandle new_names(THREAD, names);
2286
2287 if (!old_head.is_null()) {
2288 old_head->obj_at_put(trace_next_offset, new_head());
2289 }
2290 new_head->obj_at_put(trace_methods_offset, new_methods());
2291 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2292 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2293 new_head->obj_at_put(trace_names_offset, new_names());
2294 new_head->obj_at_put(trace_hidden_offset, nullptr);
2295
2296 _head = new_head();
2297 _methods = new_methods();
2298 _bcis = new_bcis();
2299 _mirrors = new_mirrors();
2300 _names = new_names();
2301 _index = 0;
2302 }
2303
2304 oop backtrace() {
2305 return _backtrace();
2306 }
2307
2308 inline void push(Method* method, int bci, TRAPS) {
2309 // Smear the -1 bci to 0 since the array only holds unsigned
2310 // shorts. The later line number lookup would just smear the -1
2311 // to a 0 even if it could be recorded.
2312 if (bci == SynchronizationEntryBCI) bci = 0;
2313
2314 if (_index >= trace_chunk_size) {
2315 methodHandle mhandle(THREAD, method);
2316 expand(CHECK);
2317 method = mhandle();
2318 }
2319
2320 _methods->ushort_at_put(_index, method->orig_method_idnum());
2321 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2322
2323 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2324 // klass owning the symbols alive so their refcounts aren't decremented.
2325 Symbol* name = method->name();
2326 _names->symbol_at_put(_index, name);
2327
2328 // We need to save the mirrors in the backtrace to keep the class
2329 // from being unloaded while we still have this stack trace.
2330 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2331 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2332
2333 _index++;
2334 }
2335
2336 void set_has_hidden_top_frame() {
2337 if (!_has_hidden_top_frame) {
2338 // It would be nice to add java/lang/Boolean::TRUE here
2339 // to indicate that this backtrace has a hidden top frame.
2340 // But this code is used before TRUE is allocated.
2341 // Therefore let's just use an arbitrary legal oop
2342 // available right here. _methods is a short[].
2343 assert(_methods != nullptr, "we need a legal oop");
2344 _has_hidden_top_frame = true;
2345 _head->obj_at_put(trace_hidden_offset, _methods);
2346 }
2347 }
2348 };
2349
2350 struct BacktraceElement : public StackObj {
2351 int _method_id;
2352 int _bci;
2353 int _version;
2354 Symbol* _name;
2355 Handle _mirror;
2356 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2357 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2358 };
2359
2360 class BacktraceIterator : public StackObj {
2361 int _index;
2362 objArrayHandle _result;
2363 objArrayHandle _mirrors;
2364 typeArrayHandle _methods;
2365 typeArrayHandle _bcis;
2366 typeArrayHandle _names;
2367
2368 void init(objArrayHandle result, Thread* thread) {
2369 // Get method id, bci, version and mirror from chunk
2370 _result = result;
2371 if (_result.not_null()) {
2372 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2373 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2374 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2375 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2376 _index = 0;
2377 }
2378 }
2379 public:
2380 BacktraceIterator(objArrayHandle result, Thread* thread) {
2381 init(result, thread);
2382 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2383 }
2384
2385 BacktraceElement next(Thread* thread) {
2386 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2387 _methods->ushort_at(_index),
2388 Backtrace::version_at(_bcis->int_at(_index)),
2389 Backtrace::bci_at(_bcis->int_at(_index)),
2390 _names->symbol_at(_index));
2391 _index++;
2392
2393 if (_index >= java_lang_Throwable::trace_chunk_size) {
2394 int next_offset = java_lang_Throwable::trace_next_offset;
2395 // Get next chunk
2396 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2397 init(result, thread);
2398 }
2399 return e;
2400 }
2401
2402 bool repeat() {
2403 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2404 }
2405 };
2406
2407
2408 // Print stack trace element to resource allocated buffer
2409 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2410 int version, int bci, Symbol* name) {
2411 ResourceMark rm;
2412
2413 // Get strings and string lengths
2414 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2415 const char* klass_name = holder->external_name();
2416 int buf_len = (int)strlen(klass_name);
2417
2418 char* method_name = name->as_C_string();
2419 buf_len += (int)strlen(method_name);
2420
2421 char* source_file_name = nullptr;
2422 Symbol* source = Backtrace::get_source_file_name(holder, version);
2423 if (source != nullptr) {
2424 source_file_name = source->as_C_string();
2425 buf_len += (int)strlen(source_file_name);
2426 }
2427
2428 char *module_name = nullptr, *module_version = nullptr;
2429 ModuleEntry* module = holder->module();
2430 if (module->is_named()) {
2431 module_name = module->name()->as_C_string();
2432 buf_len += (int)strlen(module_name);
2433 if (module->version() != nullptr) {
2434 module_version = module->version()->as_C_string();
2435 buf_len += (int)strlen(module_version);
2436 }
2437 }
2438
2439 // Allocate temporary buffer with extra space for formatting and line number
2440 const size_t buf_size = buf_len + 64;
2441 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2442
2443 // Print stack trace line in buffer
2444 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2445
2446 // Print module information
2447 if (module_name != nullptr) {
2448 if (module_version != nullptr) {
2449 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2450 } else {
2451 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2452 }
2453 }
2454
2455 // The method can be null if the requested class version is gone
2456 Method* method = holder->method_with_orig_idnum(method_id, version);
2457 if (!version_matches(method, version)) {
2458 strcat(buf, "Redefined)");
2459 } else {
2460 int line_number = Backtrace::get_line_number(method, bci);
2461 if (line_number == -2) {
2462 strcat(buf, "Native Method)");
2463 } else {
2464 if (source_file_name != nullptr && (line_number != -1)) {
2465 // Sourcename and linenumber
2466 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2467 } else if (source_file_name != nullptr) {
2468 // Just sourcename
2469 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2470 } else {
2471 // Neither sourcename nor linenumber
2472 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2473 }
2474 nmethod* nm = method->code();
2475 if (WizardMode && nm != nullptr) {
2476 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2477 }
2478 }
2479 }
2480
2481 st->print_cr("%s", buf);
2482 }
2483
2484 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2485 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2486 int method_id = method->orig_method_idnum();
2487 int version = method->constants()->version();
2488 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2489 }
2490
2491 /**
2492 * Print the throwable message and its stack trace plus all causes by walking the
2493 * cause chain. The output looks the same as of Throwable.printStackTrace().
2494 */
2495 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2496 // First, print the message.
2497 print(throwable(), st);
2498 st->cr();
2499
2500 // Now print the stack trace.
2501 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2502 while (throwable.not_null()) {
2503 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2504 if (result.is_null()) {
2505 st->print_raw_cr("\t<<no stack trace available>>");
2506 return;
2507 }
2508 BacktraceIterator iter(result, THREAD);
2509
2510 while (iter.repeat()) {
2511 BacktraceElement bte = iter.next(THREAD);
2512 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2513 }
2514 if (THREAD->can_call_java()) {
2515 // Call getCause() which doesn't necessarily return the _cause field.
2516 ExceptionMark em(THREAD);
2517 JavaValue cause(T_OBJECT);
2518 JavaCalls::call_virtual(&cause,
2519 throwable,
2520 throwable->klass(),
2521 vmSymbols::getCause_name(),
2522 vmSymbols::void_throwable_signature(),
2523 THREAD);
2524 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2525 if (HAS_PENDING_EXCEPTION) {
2526 CLEAR_PENDING_EXCEPTION;
2527 throwable = Handle();
2528 } else {
2529 throwable = Handle(THREAD, cause.get_oop());
2530 if (throwable.not_null()) {
2531 st->print("Caused by: ");
2532 print(throwable(), st);
2533 st->cr();
2534 }
2535 }
2536 } else {
2537 st->print_raw_cr("<<cannot call Java to get cause>>");
2538 return;
2539 }
2540 }
2541 }
2542
2543 /**
2544 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2545 */
2546 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2547 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2548 JavaValue result(T_VOID);
2549 JavaCalls::call_virtual(&result,
2550 throwable,
2551 vmClasses::Throwable_klass(),
2552 vmSymbols::printStackTrace_name(),
2553 vmSymbols::void_method_signature(),
2554 THREAD);
2555 }
2556
2557 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2558 if (!StackTraceInThrowable) return;
2559 ResourceMark rm(THREAD);
2560
2561 // Start out by clearing the backtrace for this object, in case the VM
2562 // runs out of memory while allocating the stack trace
2563 set_backtrace(throwable(), nullptr);
2564 // Clear lazily constructed Java level stacktrace if refilling occurs
2565 // This is unnecessary in 1.7+ but harmless
2566 clear_stacktrace(throwable());
2567
2568 int max_depth = MaxJavaStackTraceDepth;
2569 JavaThread* thread = THREAD;
2570
2571 BacktraceBuilder bt(CHECK);
2572
2573 // If there is no Java frame just return the method that was being called
2574 // with bci 0
2575 if (!thread->has_last_Java_frame()) {
2576 if (max_depth >= 1 && method() != nullptr) {
2577 bt.push(method(), 0, CHECK);
2578 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2579 set_depth(throwable(), 1);
2580 set_backtrace(throwable(), bt.backtrace());
2581 }
2582 return;
2583 }
2584
2585 // Instead of using vframe directly, this version of fill_in_stack_trace
2586 // basically handles everything by hand. This significantly improved the
2587 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2588 // See bug 6333838 for more details.
2589 // The "ASSERT" here is to verify this method generates the exactly same stack
2590 // trace as utilizing vframe.
2591 #ifdef ASSERT
2592 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2593 #endif
2594 int total_count = 0;
2595 RegisterMap map(thread,
2596 RegisterMap::UpdateMap::skip,
2597 RegisterMap::ProcessFrames::skip,
2598 RegisterMap::WalkContinuation::include);
2599 int decode_offset = 0;
2600 nmethod* nm = nullptr;
2601 bool skip_fillInStackTrace_check = false;
2602 bool skip_throwableInit_check = false;
2603 bool skip_hidden = !ShowHiddenFrames;
2604 bool show_carrier = ShowCarrierFrames;
2605 ContinuationEntry* cont_entry = thread->last_continuation();
2606 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2607 Method* method = nullptr;
2608 int bci = 0;
2609
2610 // Compiled java method case.
2611 if (decode_offset != 0) {
2612 DebugInfoReadStream stream(nm, decode_offset);
2613 decode_offset = stream.read_int();
2614 method = (Method*)nm->metadata_at(stream.read_int());
2615 bci = stream.read_bci();
2616 } else {
2617 if (fr.is_first_frame()) break;
2618
2619 if (Continuation::is_continuation_enterSpecial(fr)) {
2620 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2621 if (!show_carrier && cont_entry->is_virtual_thread()) {
2622 break;
2623 }
2624 cont_entry = cont_entry->parent();
2625 }
2626
2627 address pc = fr.pc();
2628 if (fr.is_interpreted_frame()) {
2629 address bcp;
2630 if (!map.in_cont()) {
2631 bcp = fr.interpreter_frame_bcp();
2632 method = fr.interpreter_frame_method();
2633 } else {
2634 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2635 method = map.stack_chunk()->interpreter_frame_method(fr);
2636 }
2637 bci = method->bci_from(bcp);
2638 fr = fr.sender(&map);
2639 } else {
2640 CodeBlob* cb = fr.cb();
2641 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2642 // but non nmethod
2643 fr = fr.sender(&map);
2644 if (cb == nullptr || !cb->is_nmethod()) {
2645 continue;
2646 }
2647 nm = cb->as_nmethod();
2648 assert(nm->method() != nullptr, "must be");
2649 if (nm->method()->is_native()) {
2650 method = nm->method();
2651 bci = 0;
2652 } else {
2653 PcDesc* pd = nm->pc_desc_at(pc);
2654 decode_offset = pd->scope_decode_offset();
2655 // if decode_offset is not equal to 0, it will execute the
2656 // "compiled java method case" at the beginning of the loop.
2657 continue;
2658 }
2659 }
2660 }
2661 #ifdef ASSERT
2662 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2663 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2664 st.next();
2665 }
2666 #endif
2667
2668 // the format of the stacktrace will be:
2669 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2670 // - 0 or more <init> methods for the exception class (skipped)
2671 // - rest of the stack
2672
2673 if (!skip_fillInStackTrace_check) {
2674 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2675 throwable->is_a(method->method_holder())) {
2676 continue;
2677 }
2678 else {
2679 skip_fillInStackTrace_check = true; // gone past them all
2680 }
2681 }
2682 if (!skip_throwableInit_check) {
2683 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2684
2685 // skip <init> methods of the exception class and superclasses
2686 // This is similar to classic VM.
2687 if (method->name() == vmSymbols::object_initializer_name() &&
2688 throwable->is_a(method->method_holder())) {
2689 continue;
2690 } else {
2691 // there are none or we've seen them all - either way stop checking
2692 skip_throwableInit_check = true;
2693 }
2694 }
2695 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2696 if (skip_hidden) {
2697 if (total_count == 0) {
2698 // The top frame will be hidden from the stack trace.
2699 bt.set_has_hidden_top_frame();
2700 }
2701 continue;
2702 }
2703 }
2704
2705 bt.push(method, bci, CHECK);
2706 total_count++;
2707 }
2708
2709 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2710
2711 // Put completed stack trace into throwable object
2712 set_backtrace(throwable(), bt.backtrace());
2713 set_depth(throwable(), total_count);
2714 }
2715
2716 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2717 // No-op if stack trace is disabled
2718 if (!StackTraceInThrowable) {
2719 return;
2720 }
2721
2722 // Disable stack traces for some preallocated out of memory errors
2723 if (!Universe::should_fill_in_stack_trace(throwable)) {
2724 return;
2725 }
2726
2727 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2728 PreserveExceptionMark pm(THREAD);
2729
2730 fill_in_stack_trace(throwable, method, THREAD);
2731 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2732 // original exception via the PreserveExceptionMark destructor.
2733 CLEAR_PENDING_EXCEPTION;
2734 }
2735
2736 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2737 // Allocate stack trace - backtrace is created but not filled in
2738
2739 // No-op if stack trace is disabled
2740 if (!StackTraceInThrowable) return;
2741 BacktraceBuilder bt(CHECK); // creates a backtrace
2742 set_backtrace(throwable(), bt.backtrace());
2743 }
2744
2745
2746 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2747 // Fill in stack trace into preallocated backtrace (no GC)
2748
2749 // No-op if stack trace is disabled
2750 if (!StackTraceInThrowable) return;
2751
2752 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2753
2754 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2755
2756 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2757 assert(backtrace.not_null(), "backtrace should have been preallocated");
2758
2759 ResourceMark rm(THREAD);
2760 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2761
2762 BacktraceBuilder bt(THREAD, backtrace);
2763
2764 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2765 // methods as preallocated errors aren't created by "java" code.
2766
2767 // fill in as much stack trace as possible
2768 int chunk_count = 0;
2769 for (;!st.at_end(); st.next()) {
2770 bt.push(st.method(), st.bci(), CHECK);
2771 chunk_count++;
2772
2773 // Bail-out for deep stacks
2774 if (chunk_count >= trace_chunk_size) break;
2775 }
2776 set_depth(throwable(), chunk_count);
2777 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2778
2779 // We support the Throwable immutability protocol defined for Java 7.
2780 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2781 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2782 }
2783
2784 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2785 objArrayHandle stack_trace_array_h, TRAPS) {
2786
2787 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2788 THROW(vmSymbols::java_lang_NullPointerException());
2789 }
2790
2791 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2792
2793 if (stack_trace_array_h->length() != depth) {
2794 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2795 }
2796
2797 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2798 BacktraceIterator iter(result, THREAD);
2799
2800 int index = 0;
2801 while (iter.repeat()) {
2802 BacktraceElement bte = iter.next(THREAD);
2803
2804 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2805
2806 if (stack_trace_element.is_null()) {
2807 THROW(vmSymbols::java_lang_NullPointerException());
2808 }
2809
2810 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2811 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2812
2813 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2814 method,
2815 bte._version,
2816 bte._bci,
2817 bte._name,
2818 CHECK);
2819 }
2820 }
2821
2822 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2823 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2824 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2825 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2826 // symbolic stacktrace of 'throwable'.
2827 assert(throwable.not_null(), "shouldn't be");
2828
2829 // Now create the message from the original exception and thread name.
2830 ResourceMark rm(current);
2831 const char *message = nullptr;
2832 oop detailed_message = java_lang_Throwable::message(throwable());
2833 if (detailed_message != nullptr) {
2834 message = java_lang_String::as_utf8_string(detailed_message);
2835 }
2836 stringStream st;
2837 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2838 message == nullptr ? "" : ":");
2839 if (message == nullptr) {
2840 st.print("[in thread \"%s\"]", current->name());
2841 } else {
2842 st.print("%s [in thread \"%s\"]", message, current->name());
2843 }
2844
2845 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2846 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2847 // If new_exception returns a different exception while creating the exception,
2848 // abandon the attempt to save the initialization error and return null.
2849 if (init_error->klass()->name() != exception_name) {
2850 log_info(class, init)("Exception %s thrown while saving initialization exception",
2851 init_error->klass()->external_name());
2852 return Handle();
2853 }
2854
2855 // Call to java to fill in the stack trace and clear declaringClassObject to
2856 // not keep classes alive in the stack trace.
2857 // call this: public StackTraceElement[] getStackTrace()
2858 JavaValue result(T_ARRAY);
2859 JavaCalls::call_virtual(&result, throwable,
2860 vmClasses::Throwable_klass(),
2861 vmSymbols::getStackTrace_name(),
2862 vmSymbols::getStackTrace_signature(),
2863 current);
2864 if (!current->has_pending_exception()){
2865 Handle stack_trace(current, result.get_oop());
2866 assert(stack_trace->is_objArray(), "Should be an array");
2867 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
2868 // Clear backtrace because the stacktrace should be used instead.
2869 set_backtrace(init_error(), nullptr);
2870 } else {
2871 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
2872 init_error->klass()->external_name());
2873 current->clear_pending_exception();
2874 }
2875
2876 return init_error;
2877 }
2878
2879 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2880 JavaThread* current = JavaThread::current();
2881 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2882 BacktraceIterator iter(result, current);
2883 // No backtrace available.
2884 if (!iter.repeat()) return false;
2885
2886 // If the exception happened in a frame that has been hidden, i.e.,
2887 // omitted from the back trace, we can not compute the message.
2888 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2889 if (hidden != nullptr) {
2890 return false;
2891 }
2892
2893 // Get first backtrace element.
2894 BacktraceElement bte = iter.next(current);
2895
2896 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2897 assert(holder != nullptr, "first element should be non-null");
2898 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2899
2900 // Original version is no longer available.
2901 if (m == nullptr || !version_matches(m, bte._version)) {
2902 return false;
2903 }
2904
2905 *method = m;
2906 *bci = bte._bci;
2907 return true;
2908 }
2909
2910 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2911 // Allocate java.lang.StackTraceElement instance
2912 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2913 assert(k != nullptr, "must be loaded in 1.4+");
2914 if (k->should_be_initialized()) {
2915 k->initialize(CHECK_NULL);
2916 }
2917
2918 Handle element = k->allocate_instance_handle(CHECK_NULL);
2919
2920 int version = method->constants()->version();
2921 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2922 return element();
2923 }
2924
2925 void java_lang_StackTraceElement::fill_in(Handle element,
2926 InstanceKlass* holder, const methodHandle& method,
2927 int version, int bci, Symbol* name, TRAPS) {
2928 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2929
2930 ResourceMark rm(THREAD);
2931 HandleMark hm(THREAD);
2932
2933 // Fill in class name
2934 Handle java_class(THREAD, holder->java_mirror());
2935 oop classname = java_lang_Class::name(java_class, CHECK);
2936 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2937 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2938
2939 oop loader = holder->class_loader();
2940 if (loader != nullptr) {
2941 oop loader_name = java_lang_ClassLoader::name(loader);
2942 if (loader_name != nullptr)
2943 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2944 }
2945
2946 // Fill in method name
2947 oop methodname = StringTable::intern(name, CHECK);
2948 java_lang_StackTraceElement::set_methodName(element(), methodname);
2949
2950 // Fill in module name and version
2951 ModuleEntry* module = holder->module();
2952 if (module->is_named()) {
2953 oop module_name = StringTable::intern(module->name(), CHECK);
2954 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2955 oop module_version;
2956 if (module->version() != nullptr) {
2957 module_version = StringTable::intern(module->version(), CHECK);
2958 } else {
2959 module_version = nullptr;
2960 }
2961 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2962 }
2963
2964 if (method() == nullptr || !version_matches(method(), version)) {
2965 // The method was redefined, accurate line number information isn't available
2966 java_lang_StackTraceElement::set_fileName(element(), nullptr);
2967 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2968 } else {
2969 Symbol* source;
2970 oop source_file;
2971 int line_number;
2972 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2973
2974 java_lang_StackTraceElement::set_fileName(element(), source_file);
2975 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2976 }
2977 }
2978
2979 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2980 InstanceKlass* holder,
2981 int version,
2982 const methodHandle& method,
2983 int bci,
2984 Symbol*& source,
2985 oop& source_file,
2986 int& line_number, TRAPS) {
2987 // Fill in source file name and line number.
2988 source = Backtrace::get_source_file_name(holder, version);
2989 source_file = java_lang_Class::source_file(java_class());
2990 if (source != nullptr) {
2991 // Class was not redefined. We can trust its cache if set,
2992 // else we have to initialize it.
2993 if (source_file == nullptr) {
2994 source_file = StringTable::intern(source, CHECK);
2995 java_lang_Class::set_source_file(java_class(), source_file);
2996 }
2997 } else {
2998 // Class was redefined. Dump the cache if it was set.
2999 if (source_file != nullptr) {
3000 source_file = nullptr;
3001 java_lang_Class::set_source_file(java_class(), source_file);
3002 }
3003 }
3004 line_number = Backtrace::get_line_number(method(), bci);
3005 }
3006
3007 #if INCLUDE_JVMCI
3008 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3009 Symbol*& filename, int& line_number, TRAPS) {
3010 ResourceMark rm(THREAD);
3011 HandleMark hm(THREAD);
3012
3013 filename = nullptr;
3014 line_number = -1;
3015
3016 oop source_file;
3017 int version = method->constants()->version();
3018 InstanceKlass* holder = method->method_holder();
3019 Handle java_class(THREAD, holder->java_mirror());
3020 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3021 }
3022 #endif // INCLUDE_JVMCI
3023
3024 // java_lang_ClassFrameInfo
3025
3026 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3027 int java_lang_ClassFrameInfo::_flags_offset;
3028
3029 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3030 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3031 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3032
3033 void java_lang_ClassFrameInfo::compute_offsets() {
3034 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3035 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3036 }
3037
3038 #if INCLUDE_CDS
3039 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3040 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3041 }
3042 #endif
3043
3044 static int get_flags(const methodHandle& m) {
3045 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3046 if (m->is_initializer()) {
3047 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3048 } else {
3049 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3050 }
3051 if (m->caller_sensitive()) {
3052 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3053 }
3054 if (m->is_hidden()) {
3055 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3056 }
3057 assert((flags & 0xFF000000) == 0, "unexpected flags");
3058 return flags;
3059 }
3060
3061 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3062 return obj->obj_field(_classOrMemberName_offset);
3063 }
3064
3065 int java_lang_ClassFrameInfo::flags(oop obj) {
3066 return obj->int_field(_flags_offset);
3067 }
3068
3069 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3070 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3071 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3072 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3073 stackFrame->int_field_put(_flags_offset, flags);
3074 }
3075
3076 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3077 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3078 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3079 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3080 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3081 stackFrame->int_field_put(_flags_offset, flags);
3082 }
3083
3084
3085 // java_lang_StackFrameInfo
3086
3087 int java_lang_StackFrameInfo::_type_offset;
3088 int java_lang_StackFrameInfo::_name_offset;
3089 int java_lang_StackFrameInfo::_bci_offset;
3090 int java_lang_StackFrameInfo::_version_offset;
3091 int java_lang_StackFrameInfo::_contScope_offset;
3092
3093 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3094 macro(_type_offset, k, "type", object_signature, false); \
3095 macro(_name_offset, k, "name", string_signature, false); \
3096 macro(_bci_offset, k, "bci", int_signature, false); \
3097 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3098
3099 void java_lang_StackFrameInfo::compute_offsets() {
3100 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3101 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3102 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3103 }
3104
3105 #if INCLUDE_CDS
3106 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3107 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3108 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3109 }
3110 #endif
3111
3112 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3113 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3114 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3115 return method;
3116 }
3117
3118 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3119 // set Method* or mid/cpref
3120 HandleMark hm(THREAD);
3121 Handle cont_h(THREAD, cont);
3122 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3123
3124 // set bci
3125 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3126 // method may be redefined; store the version
3127 int version = method->constants()->version();
3128 assert((jushort)version == version, "version should be short");
3129 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3130
3131 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3132 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3133 }
3134
3135 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3136 ResourceMark rm(THREAD);
3137 HandleMark hm(THREAD);
3138
3139 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3140 InstanceKlass* holder = method->method_holder();
3141 short version = stackFrame->short_field(_version_offset);
3142 int bci = stackFrame->int_field(_bci_offset);
3143 Symbol* name = method->name();
3144 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3145 }
3146
3147 oop java_lang_StackFrameInfo::type(oop obj) {
3148 return obj->obj_field(_type_offset);
3149 }
3150
3151 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3152 obj->obj_field_put(_type_offset, value);
3153 }
3154
3155 oop java_lang_StackFrameInfo::name(oop obj) {
3156 return obj->obj_field(_name_offset);
3157 }
3158
3159 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3160 obj->obj_field_put(_name_offset, value);
3161 }
3162
3163 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3164 obj->short_field_put(_version_offset, value);
3165 }
3166
3167 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3168 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3169 obj->int_field_put(_bci_offset, value);
3170 }
3171
3172 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3173 obj->obj_field_put(_contScope_offset, value);
3174 }
3175
3176 int java_lang_LiveStackFrameInfo::_monitors_offset;
3177 int java_lang_LiveStackFrameInfo::_locals_offset;
3178 int java_lang_LiveStackFrameInfo::_operands_offset;
3179 int java_lang_LiveStackFrameInfo::_mode_offset;
3180
3181 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3182 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3183 macro(_locals_offset, k, "locals", object_array_signature, false); \
3184 macro(_operands_offset, k, "operands", object_array_signature, false); \
3185 macro(_mode_offset, k, "mode", int_signature, false)
3186
3187 void java_lang_LiveStackFrameInfo::compute_offsets() {
3188 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3189 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3190 }
3191
3192 #if INCLUDE_CDS
3193 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3194 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3195 }
3196 #endif
3197
3198 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3199 obj->obj_field_put(_monitors_offset, value);
3200 }
3201
3202 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3203 obj->obj_field_put(_locals_offset, value);
3204 }
3205
3206 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3207 obj->obj_field_put(_operands_offset, value);
3208 }
3209
3210 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3211 obj->int_field_put(_mode_offset, value);
3212 }
3213
3214
3215 // java_lang_AccessibleObject
3216
3217 int java_lang_reflect_AccessibleObject::_override_offset;
3218
3219 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3220 macro(_override_offset, k, "override", bool_signature, false)
3221
3222 void java_lang_reflect_AccessibleObject::compute_offsets() {
3223 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3224 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3225 }
3226
3227 #if INCLUDE_CDS
3228 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3229 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3230 }
3231 #endif
3232
3233 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3234 return (jboolean) reflect->bool_field(_override_offset);
3235 }
3236
3237 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3238 reflect->bool_field_put(_override_offset, (int) value);
3239 }
3240
3241 // java_lang_reflect_Method
3242
3243 int java_lang_reflect_Method::_clazz_offset;
3244 int java_lang_reflect_Method::_name_offset;
3245 int java_lang_reflect_Method::_returnType_offset;
3246 int java_lang_reflect_Method::_parameterTypes_offset;
3247 int java_lang_reflect_Method::_exceptionTypes_offset;
3248 int java_lang_reflect_Method::_slot_offset;
3249 int java_lang_reflect_Method::_modifiers_offset;
3250 int java_lang_reflect_Method::_signature_offset;
3251 int java_lang_reflect_Method::_annotations_offset;
3252 int java_lang_reflect_Method::_parameter_annotations_offset;
3253 int java_lang_reflect_Method::_annotation_default_offset;
3254
3255 #define METHOD_FIELDS_DO(macro) \
3256 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3257 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3258 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3259 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3260 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3261 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3262 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3263 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3264 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3265 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3266 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3267
3268 void java_lang_reflect_Method::compute_offsets() {
3269 InstanceKlass* k = vmClasses::reflect_Method_klass();
3270 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3271 }
3272
3273 #if INCLUDE_CDS
3274 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3275 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3276 }
3277 #endif
3278
3279 Handle java_lang_reflect_Method::create(TRAPS) {
3280 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3281 Klass* klass = vmClasses::reflect_Method_klass();
3282 // This class is eagerly initialized during VM initialization, since we keep a reference
3283 // to one of the methods
3284 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3285 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3286 }
3287
3288 oop java_lang_reflect_Method::clazz(oop reflect) {
3289 return reflect->obj_field(_clazz_offset);
3290 }
3291
3292 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3293 reflect->obj_field_put(_clazz_offset, value);
3294 }
3295
3296 int java_lang_reflect_Method::slot(oop reflect) {
3297 return reflect->int_field(_slot_offset);
3298 }
3299
3300 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3301 reflect->int_field_put(_slot_offset, value);
3302 }
3303
3304 void java_lang_reflect_Method::set_name(oop method, oop value) {
3305 method->obj_field_put(_name_offset, value);
3306 }
3307
3308 oop java_lang_reflect_Method::return_type(oop method) {
3309 return method->obj_field(_returnType_offset);
3310 }
3311
3312 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3313 method->obj_field_put(_returnType_offset, value);
3314 }
3315
3316 oop java_lang_reflect_Method::parameter_types(oop method) {
3317 return method->obj_field(_parameterTypes_offset);
3318 }
3319
3320 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3321 method->obj_field_put(_parameterTypes_offset, value);
3322 }
3323
3324 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3325 method->obj_field_put(_exceptionTypes_offset, value);
3326 }
3327
3328 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3329 method->int_field_put(_modifiers_offset, value);
3330 }
3331
3332 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3333 method->obj_field_put(_signature_offset, value);
3334 }
3335
3336 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3337 method->obj_field_put(_annotations_offset, value);
3338 }
3339
3340 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3341 method->obj_field_put(_parameter_annotations_offset, value);
3342 }
3343
3344 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3345 method->obj_field_put(_annotation_default_offset, value);
3346 }
3347
3348 int java_lang_reflect_Constructor::_clazz_offset;
3349 int java_lang_reflect_Constructor::_parameterTypes_offset;
3350 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3351 int java_lang_reflect_Constructor::_slot_offset;
3352 int java_lang_reflect_Constructor::_modifiers_offset;
3353 int java_lang_reflect_Constructor::_signature_offset;
3354 int java_lang_reflect_Constructor::_annotations_offset;
3355 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3356
3357 #define CONSTRUCTOR_FIELDS_DO(macro) \
3358 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3359 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3360 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3361 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3362 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3363 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3364 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3365 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3366
3367 void java_lang_reflect_Constructor::compute_offsets() {
3368 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3369 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3370 }
3371
3372 #if INCLUDE_CDS
3373 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3374 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3375 }
3376 #endif
3377
3378 Handle java_lang_reflect_Constructor::create(TRAPS) {
3379 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3380 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3381 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3382 InstanceKlass* ik = InstanceKlass::cast(k);
3383 // Ensure it is initialized
3384 ik->initialize(CHECK_NH);
3385 return ik->allocate_instance_handle(THREAD);
3386 }
3387
3388 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3389 return reflect->obj_field(_clazz_offset);
3390 }
3391
3392 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3393 reflect->obj_field_put(_clazz_offset, value);
3394 }
3395
3396 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3397 return constructor->obj_field(_parameterTypes_offset);
3398 }
3399
3400 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3401 constructor->obj_field_put(_parameterTypes_offset, value);
3402 }
3403
3404 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3405 constructor->obj_field_put(_exceptionTypes_offset, value);
3406 }
3407
3408 int java_lang_reflect_Constructor::slot(oop reflect) {
3409 return reflect->int_field(_slot_offset);
3410 }
3411
3412 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3413 reflect->int_field_put(_slot_offset, value);
3414 }
3415
3416 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3417 constructor->int_field_put(_modifiers_offset, value);
3418 }
3419
3420 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3421 constructor->obj_field_put(_signature_offset, value);
3422 }
3423
3424 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3425 constructor->obj_field_put(_annotations_offset, value);
3426 }
3427
3428 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3429 method->obj_field_put(_parameter_annotations_offset, value);
3430 }
3431
3432 int java_lang_reflect_Field::_clazz_offset;
3433 int java_lang_reflect_Field::_name_offset;
3434 int java_lang_reflect_Field::_type_offset;
3435 int java_lang_reflect_Field::_slot_offset;
3436 int java_lang_reflect_Field::_modifiers_offset;
3437 int java_lang_reflect_Field::_trusted_final_offset;
3438 int java_lang_reflect_Field::_signature_offset;
3439 int java_lang_reflect_Field::_annotations_offset;
3440
3441 #define FIELD_FIELDS_DO(macro) \
3442 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3443 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3444 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3445 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3446 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3447 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3448 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3449 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3450
3451 void java_lang_reflect_Field::compute_offsets() {
3452 InstanceKlass* k = vmClasses::reflect_Field_klass();
3453 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3454 }
3455
3456 #if INCLUDE_CDS
3457 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3458 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3459 }
3460 #endif
3461
3462 Handle java_lang_reflect_Field::create(TRAPS) {
3463 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3464 Symbol* name = vmSymbols::java_lang_reflect_Field();
3465 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3466 InstanceKlass* ik = InstanceKlass::cast(k);
3467 // Ensure it is initialized
3468 ik->initialize(CHECK_NH);
3469 return ik->allocate_instance_handle(THREAD);
3470 }
3471
3472 oop java_lang_reflect_Field::clazz(oop reflect) {
3473 return reflect->obj_field(_clazz_offset);
3474 }
3475
3476 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3477 reflect->obj_field_put(_clazz_offset, value);
3478 }
3479
3480 oop java_lang_reflect_Field::name(oop field) {
3481 return field->obj_field(_name_offset);
3482 }
3483
3484 void java_lang_reflect_Field::set_name(oop field, oop value) {
3485 field->obj_field_put(_name_offset, value);
3486 }
3487
3488 oop java_lang_reflect_Field::type(oop field) {
3489 return field->obj_field(_type_offset);
3490 }
3491
3492 void java_lang_reflect_Field::set_type(oop field, oop value) {
3493 field->obj_field_put(_type_offset, value);
3494 }
3495
3496 int java_lang_reflect_Field::slot(oop reflect) {
3497 return reflect->int_field(_slot_offset);
3498 }
3499
3500 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3501 reflect->int_field_put(_slot_offset, value);
3502 }
3503
3504 int java_lang_reflect_Field::modifiers(oop field) {
3505 return field->int_field(_modifiers_offset);
3506 }
3507
3508 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3509 field->int_field_put(_modifiers_offset, value);
3510 }
3511
3512 void java_lang_reflect_Field::set_trusted_final(oop field) {
3513 field->bool_field_put(_trusted_final_offset, true);
3514 }
3515
3516 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3517 field->obj_field_put(_signature_offset, value);
3518 }
3519
3520 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3521 field->obj_field_put(_annotations_offset, value);
3522 }
3523
3524 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3525 // Allocate java.lang.reflect.RecordComponent instance
3526 HandleMark hm(THREAD);
3527 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3528 assert(ik != nullptr, "must be loaded");
3529 ik->initialize(CHECK_NULL);
3530
3531 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3532
3533 Handle decl_class(THREAD, holder->java_mirror());
3534 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3535
3536 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3537 oop component_name = StringTable::intern(name, CHECK_NULL);
3538 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3539
3540 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3541 Handle component_type_h =
3542 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3543 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3544
3545 Method* accessor_method = nullptr;
3546 {
3547 // Prepend "()" to type to create the full method signature.
3548 ResourceMark rm(THREAD);
3549 int sig_len = type->utf8_length() + 3; // "()" and null char
3550 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3551 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3552 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3553 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3554 }
3555
3556 if (accessor_method != nullptr) {
3557 methodHandle method(THREAD, accessor_method);
3558 oop m = Reflection::new_method(method, false, CHECK_NULL);
3559 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3560 } else {
3561 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3562 }
3563
3564 int sig_index = component->generic_signature_index();
3565 if (sig_index > 0) {
3566 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3567 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3568 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3569 } else {
3570 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3571 }
3572
3573 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3574 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3575
3576 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3577 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3578
3579 return element();
3580 }
3581
3582 int reflect_ConstantPool::_oop_offset;
3583
3584 #define CONSTANTPOOL_FIELDS_DO(macro) \
3585 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3586
3587 void reflect_ConstantPool::compute_offsets() {
3588 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3589 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3590 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3591 }
3592
3593 #if INCLUDE_CDS
3594 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3595 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3596 }
3597 #endif
3598
3599 int java_lang_reflect_Parameter::_name_offset;
3600 int java_lang_reflect_Parameter::_modifiers_offset;
3601 int java_lang_reflect_Parameter::_index_offset;
3602 int java_lang_reflect_Parameter::_executable_offset;
3603
3604 #define PARAMETER_FIELDS_DO(macro) \
3605 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3606 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3607 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3608 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3609
3610 void java_lang_reflect_Parameter::compute_offsets() {
3611 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3612 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3613 }
3614
3615 #if INCLUDE_CDS
3616 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3617 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3618 }
3619 #endif
3620
3621 Handle java_lang_reflect_Parameter::create(TRAPS) {
3622 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3623 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3624 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3625 InstanceKlass* ik = InstanceKlass::cast(k);
3626 // Ensure it is initialized
3627 ik->initialize(CHECK_NH);
3628 return ik->allocate_instance_handle(THREAD);
3629 }
3630
3631 oop java_lang_reflect_Parameter::name(oop param) {
3632 return param->obj_field(_name_offset);
3633 }
3634
3635 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3636 param->obj_field_put(_name_offset, value);
3637 }
3638
3639 int java_lang_reflect_Parameter::modifiers(oop param) {
3640 return param->int_field(_modifiers_offset);
3641 }
3642
3643 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3644 param->int_field_put(_modifiers_offset, value);
3645 }
3646
3647 int java_lang_reflect_Parameter::index(oop param) {
3648 return param->int_field(_index_offset);
3649 }
3650
3651 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3652 param->int_field_put(_index_offset, value);
3653 }
3654
3655 oop java_lang_reflect_Parameter::executable(oop param) {
3656 return param->obj_field(_executable_offset);
3657 }
3658
3659 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3660 param->obj_field_put(_executable_offset, value);
3661 }
3662
3663 // java_lang_Module
3664
3665 int java_lang_Module::_loader_offset;
3666 int java_lang_Module::_name_offset;
3667 int java_lang_Module::_module_entry_offset;
3668
3669 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3670 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3671 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3672 vmSymbols::java_lang_module_init_signature(),
3673 loader, module_name, CHECK_NH);
3674 }
3675
3676 #define MODULE_FIELDS_DO(macro) \
3677 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3678 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3679
3680 void java_lang_Module::compute_offsets() {
3681 InstanceKlass* k = vmClasses::Module_klass();
3682 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3683 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3684 }
3685
3686 #if INCLUDE_CDS
3687 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3688 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3689 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3690 }
3691 #endif
3692
3693 oop java_lang_Module::loader(oop module) {
3694 return module->obj_field(_loader_offset);
3695 }
3696
3697 void java_lang_Module::set_loader(oop module, oop value) {
3698 module->obj_field_put(_loader_offset, value);
3699 }
3700
3701 oop java_lang_Module::name(oop module) {
3702 return module->obj_field(_name_offset);
3703 }
3704
3705 void java_lang_Module::set_name(oop module, oop value) {
3706 module->obj_field_put(_name_offset, value);
3707 }
3708
3709 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3710 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3711 assert(module != nullptr, "module can't be null");
3712 assert(oopDesc::is_oop(module), "module must be oop");
3713
3714 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3715 return module_entry;
3716 }
3717
3718 ModuleEntry* java_lang_Module::module_entry(oop module) {
3719 ModuleEntry* module_entry = module_entry_raw(module);
3720 if (module_entry == nullptr) {
3721 // If the inject field containing the ModuleEntry* is null then return the
3722 // class loader's unnamed module.
3723 oop loader = java_lang_Module::loader(module);
3724 Handle h_loader = Handle(Thread::current(), loader);
3725 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3726 return loader_cld->unnamed_module();
3727 }
3728 return module_entry;
3729 }
3730
3731 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3732 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3733 assert(module != nullptr, "module can't be null");
3734 assert(oopDesc::is_oop(module), "module must be oop");
3735 module->address_field_put(_module_entry_offset, (address)module_entry);
3736 }
3737
3738 Handle reflect_ConstantPool::create(TRAPS) {
3739 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3740 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3741 // Ensure it is initialized
3742 k->initialize(CHECK_NH);
3743 return k->allocate_instance_handle(THREAD);
3744 }
3745
3746
3747 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3748 oop mirror = value->pool_holder()->java_mirror();
3749 // Save the mirror to get back the constant pool.
3750 reflect->obj_field_put(_oop_offset, mirror);
3751 }
3752
3753 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3754
3755 oop mirror = reflect->obj_field(_oop_offset);
3756 Klass* k = java_lang_Class::as_Klass(mirror);
3757 assert(k->is_instance_klass(), "Must be");
3758
3759 // Get the constant pool back from the klass. Since class redefinition
3760 // merges the new constant pool into the old, this is essentially the
3761 // same constant pool as the original. If constant pool merging is
3762 // no longer done in the future, this will have to change to save
3763 // the original.
3764 return InstanceKlass::cast(k)->constants();
3765 }
3766
3767
3768 // Support for java_lang_ref_Reference
3769
3770 bool java_lang_ref_Reference::_offsets_initialized;
3771
3772 int java_lang_ref_Reference::_referent_offset;
3773 int java_lang_ref_Reference::_queue_offset;
3774 int java_lang_ref_Reference::_next_offset;
3775 int java_lang_ref_Reference::_discovered_offset;
3776
3777 #define REFERENCE_FIELDS_DO(macro) \
3778 macro(_referent_offset, k, "referent", object_signature, false); \
3779 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3780 macro(_next_offset, k, "next", reference_signature, false); \
3781 macro(_discovered_offset, k, "discovered", reference_signature, false);
3782
3783 void java_lang_ref_Reference::compute_offsets() {
3784 if (_offsets_initialized) {
3785 return;
3786 }
3787 _offsets_initialized = true;
3788 InstanceKlass* k = vmClasses::Reference_klass();
3789 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3790 }
3791
3792 #if INCLUDE_CDS
3793 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3794 f->do_bool(&_offsets_initialized);
3795 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3796 }
3797 #endif
3798
3799 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3800 assert(obj != nullptr, "sanity");
3801 if (offset != _referent_offset) {
3802 return false;
3803 }
3804
3805 Klass* k = obj->klass();
3806 if (!k->is_instance_klass()) {
3807 return false;
3808 }
3809
3810 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3811 bool is_reference = ik->reference_type() != REF_NONE;
3812 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3813 return is_reference;
3814 }
3815
3816 int java_lang_boxing_object::_value_offset;
3817 int java_lang_boxing_object::_long_value_offset;
3818
3819 #define BOXING_FIELDS_DO(macro) \
3820 macro(_value_offset, integerKlass, "value", int_signature, false); \
3821 macro(_long_value_offset, longKlass, "value", long_signature, false);
3822
3823 void java_lang_boxing_object::compute_offsets() {
3824 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3825 InstanceKlass* longKlass = vmClasses::Long_klass();
3826 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3827 }
3828
3829 #if INCLUDE_CDS
3830 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3831 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3832 }
3833 #endif
3834
3835 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3836 Klass* k = vmClasses::box_klass(type);
3837 if (k == nullptr) return nullptr;
3838 InstanceKlass* ik = InstanceKlass::cast(k);
3839 if (!ik->is_initialized()) {
3840 ik->initialize(CHECK_NULL);
3841 }
3842 return ik->allocate_instance(THREAD);
3843 }
3844
3845
3846 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3847 oop box = initialize_and_allocate(type, CHECK_NULL);
3848 if (box == nullptr) return nullptr;
3849 switch (type) {
3850 case T_BOOLEAN:
3851 box->bool_field_put(_value_offset, value->z);
3852 break;
3853 case T_CHAR:
3854 box->char_field_put(_value_offset, value->c);
3855 break;
3856 case T_FLOAT:
3857 box->float_field_put(_value_offset, value->f);
3858 break;
3859 case T_DOUBLE:
3860 box->double_field_put(_long_value_offset, value->d);
3861 break;
3862 case T_BYTE:
3863 box->byte_field_put(_value_offset, value->b);
3864 break;
3865 case T_SHORT:
3866 box->short_field_put(_value_offset, value->s);
3867 break;
3868 case T_INT:
3869 box->int_field_put(_value_offset, value->i);
3870 break;
3871 case T_LONG:
3872 box->long_field_put(_long_value_offset, value->j);
3873 break;
3874 default:
3875 return nullptr;
3876 }
3877 return box;
3878 }
3879
3880
3881 BasicType java_lang_boxing_object::basic_type(oop box) {
3882 if (box == nullptr) return T_ILLEGAL;
3883 BasicType type = vmClasses::box_klass_type(box->klass());
3884 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3885 return T_ILLEGAL;
3886 return type;
3887 }
3888
3889
3890 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3891 BasicType type = vmClasses::box_klass_type(box->klass());
3892 switch (type) {
3893 case T_BOOLEAN:
3894 value->z = box->bool_field(_value_offset);
3895 break;
3896 case T_CHAR:
3897 value->c = box->char_field(_value_offset);
3898 break;
3899 case T_FLOAT:
3900 value->f = box->float_field(_value_offset);
3901 break;
3902 case T_DOUBLE:
3903 value->d = box->double_field(_long_value_offset);
3904 break;
3905 case T_BYTE:
3906 value->b = box->byte_field(_value_offset);
3907 break;
3908 case T_SHORT:
3909 value->s = box->short_field(_value_offset);
3910 break;
3911 case T_INT:
3912 value->i = box->int_field(_value_offset);
3913 break;
3914 case T_LONG:
3915 value->j = box->long_field(_long_value_offset);
3916 break;
3917 default:
3918 return T_ILLEGAL;
3919 } // end switch
3920 return type;
3921 }
3922
3923
3924 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3925 BasicType type = vmClasses::box_klass_type(box->klass());
3926 switch (type) {
3927 case T_BOOLEAN:
3928 box->bool_field_put(_value_offset, value->z);
3929 break;
3930 case T_CHAR:
3931 box->char_field_put(_value_offset, value->c);
3932 break;
3933 case T_FLOAT:
3934 box->float_field_put(_value_offset, value->f);
3935 break;
3936 case T_DOUBLE:
3937 box->double_field_put(_long_value_offset, value->d);
3938 break;
3939 case T_BYTE:
3940 box->byte_field_put(_value_offset, value->b);
3941 break;
3942 case T_SHORT:
3943 box->short_field_put(_value_offset, value->s);
3944 break;
3945 case T_INT:
3946 box->int_field_put(_value_offset, value->i);
3947 break;
3948 case T_LONG:
3949 box->long_field_put(_long_value_offset, value->j);
3950 break;
3951 default:
3952 return T_ILLEGAL;
3953 } // end switch
3954 return type;
3955 }
3956
3957
3958 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3959 switch (type) {
3960 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3961 case T_CHAR: st->print("%d", value->c); break;
3962 case T_BYTE: st->print("%d", value->b); break;
3963 case T_SHORT: st->print("%d", value->s); break;
3964 case T_INT: st->print("%d", value->i); break;
3965 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3966 case T_FLOAT: st->print("%f", value->f); break;
3967 case T_DOUBLE: st->print("%lf", value->d); break;
3968 default: st->print("type %d?", type); break;
3969 }
3970 }
3971
3972
3973 // Support for java_lang_ref_SoftReference
3974 //
3975
3976 int java_lang_ref_SoftReference::_timestamp_offset;
3977 int java_lang_ref_SoftReference::_static_clock_offset;
3978
3979 #define SOFTREFERENCE_FIELDS_DO(macro) \
3980 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3981 macro(_static_clock_offset, k, "clock", long_signature, true)
3982
3983 void java_lang_ref_SoftReference::compute_offsets() {
3984 InstanceKlass* k = vmClasses::SoftReference_klass();
3985 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3986 }
3987
3988 #if INCLUDE_CDS
3989 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3990 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3991 }
3992 #endif
3993
3994 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3995 return ref->long_field(_timestamp_offset);
3996 }
3997
3998 jlong java_lang_ref_SoftReference::clock() {
3999 InstanceKlass* ik = vmClasses::SoftReference_klass();
4000 oop base = ik->static_field_base_raw();
4001 return base->long_field(_static_clock_offset);
4002 }
4003
4004 void java_lang_ref_SoftReference::set_clock(jlong value) {
4005 InstanceKlass* ik = vmClasses::SoftReference_klass();
4006 oop base = ik->static_field_base_raw();
4007 base->long_field_put(_static_clock_offset, value);
4008 }
4009
4010 // Support for java_lang_invoke_DirectMethodHandle
4011
4012 int java_lang_invoke_DirectMethodHandle::_member_offset;
4013
4014 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4015 oop member_name = nullptr;
4016 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4017 "a DirectMethodHandle oop is expected");
4018 return dmh->obj_field(_member_offset);
4019 }
4020
4021 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4022 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4023
4024 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4025 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4026 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4027 }
4028
4029 #if INCLUDE_CDS
4030 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4031 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4032 }
4033 #endif
4034
4035 // Support for java_lang_invoke_MethodHandle
4036
4037 int java_lang_invoke_MethodHandle::_type_offset;
4038 int java_lang_invoke_MethodHandle::_form_offset;
4039
4040 int java_lang_invoke_MemberName::_clazz_offset;
4041 int java_lang_invoke_MemberName::_name_offset;
4042 int java_lang_invoke_MemberName::_type_offset;
4043 int java_lang_invoke_MemberName::_flags_offset;
4044 int java_lang_invoke_MemberName::_method_offset;
4045 int java_lang_invoke_MemberName::_vmindex_offset;
4046
4047 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4048 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4049
4050 int java_lang_invoke_LambdaForm::_vmentry_offset;
4051
4052 #define METHODHANDLE_FIELDS_DO(macro) \
4053 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4054 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4055
4056 void java_lang_invoke_MethodHandle::compute_offsets() {
4057 InstanceKlass* k = vmClasses::MethodHandle_klass();
4058 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4059 }
4060
4061 #if INCLUDE_CDS
4062 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4063 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4064 }
4065 #endif
4066
4067 #define MEMBERNAME_FIELDS_DO(macro) \
4068 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4069 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4070 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4071 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4072 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4073
4074 void java_lang_invoke_MemberName::compute_offsets() {
4075 InstanceKlass* k = vmClasses::MemberName_klass();
4076 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4077 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4078 }
4079
4080 #if INCLUDE_CDS
4081 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4082 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4083 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4084 }
4085 #endif
4086
4087 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4088 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4089
4090 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4091 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4092 assert(k != nullptr, "jdk mismatch");
4093 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4094 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4095 }
4096
4097 #if INCLUDE_CDS
4098 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4099 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4100 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4101 }
4102 #endif
4103
4104 #define LAMBDAFORM_FIELDS_DO(macro) \
4105 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4106
4107 void java_lang_invoke_LambdaForm::compute_offsets() {
4108 InstanceKlass* k = vmClasses::LambdaForm_klass();
4109 assert (k != nullptr, "jdk mismatch");
4110 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4111 }
4112
4113 #if INCLUDE_CDS
4114 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4115 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4116 }
4117 #endif
4118
4119 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4120 return obj != nullptr && is_subclass(obj->klass());
4121 }
4122
4123 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4124 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4125
4126 #define NEP_FIELDS_DO(macro) \
4127 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4128 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4129
4130 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4131 return obj != nullptr && is_subclass(obj->klass());
4132 }
4133
4134 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4135 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4136 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4137 }
4138
4139 #if INCLUDE_CDS
4140 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4141 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4142 }
4143 #endif
4144
4145 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4146 return entry->obj_field(_method_type_offset);
4147 }
4148
4149 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4150 return entry->long_field(_downcall_stub_address_offset);
4151 }
4152
4153 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4154 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4155 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4156 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4157 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4158 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4159 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4160
4161 #define ABIDescriptor_FIELDS_DO(macro) \
4162 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4163 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4164 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4165 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4166 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4167 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4168 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4169
4170 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4171 return obj != nullptr && is_subclass(obj->klass());
4172 }
4173
4174 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4175 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4176 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4177 }
4178
4179 #if INCLUDE_CDS
4180 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4181 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4182 }
4183 #endif
4184
4185 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4186 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4187 }
4188
4189 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4190 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4191 }
4192
4193 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4194 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4195 }
4196
4197 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4198 return entry->int_field(_stackAlignment_offset);
4199 }
4200
4201 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4202 return entry->int_field(_shadowSpace_offset);
4203 }
4204
4205 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4206 return entry->obj_field(_scratch1_offset);
4207 }
4208
4209 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4210 return entry->obj_field(_scratch2_offset);
4211 }
4212
4213 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4214 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4215 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4216 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4217
4218 #define VMStorage_FIELDS_DO(macro) \
4219 macro(_type_offset, k, "type", byte_signature, false); \
4220 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4221 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4222 macro(_debugName_offset, k, "debugName", string_signature, false); \
4223
4224 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4225 return obj != nullptr && is_subclass(obj->klass());
4226 }
4227
4228 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4229 InstanceKlass* k = vmClasses::VMStorage_klass();
4230 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4231 }
4232
4233 #if INCLUDE_CDS
4234 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4235 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4236 }
4237 #endif
4238
4239 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4240 return entry->byte_field(_type_offset);
4241 }
4242
4243 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4244 return entry->int_field(_indexOrOffset_offset);
4245 }
4246
4247 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4248 return entry->short_field(_segmentMaskOrSize_offset);
4249 }
4250
4251 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4252 return entry->obj_field(_debugName_offset);
4253 }
4254
4255 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4256 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4257
4258 #define CallConv_FIELDS_DO(macro) \
4259 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4260 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4261
4262 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4263 return obj != nullptr && is_subclass(obj->klass());
4264 }
4265
4266 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4267 InstanceKlass* k = vmClasses::CallConv_klass();
4268 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4269 }
4270
4271 #if INCLUDE_CDS
4272 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4273 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4274 }
4275 #endif
4276
4277 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4278 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4279 }
4280
4281 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4282 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4283 }
4284
4285 oop java_lang_invoke_MethodHandle::type(oop mh) {
4286 return mh->obj_field(_type_offset);
4287 }
4288
4289 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4290 mh->obj_field_put(_type_offset, mtype);
4291 }
4292
4293 oop java_lang_invoke_MethodHandle::form(oop mh) {
4294 assert(_form_offset != 0, "");
4295 return mh->obj_field(_form_offset);
4296 }
4297
4298 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4299 assert(_form_offset != 0, "");
4300 mh->obj_field_put(_form_offset, lform);
4301 }
4302
4303 /// MemberName accessors
4304
4305 oop java_lang_invoke_MemberName::clazz(oop mname) {
4306 assert(is_instance(mname), "wrong type");
4307 return mname->obj_field(_clazz_offset);
4308 }
4309
4310 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4311 assert(is_instance(mname), "wrong type");
4312 mname->obj_field_put(_clazz_offset, clazz);
4313 }
4314
4315 oop java_lang_invoke_MemberName::name(oop mname) {
4316 assert(is_instance(mname), "wrong type");
4317 return mname->obj_field(_name_offset);
4318 }
4319
4320 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4321 assert(is_instance(mname), "wrong type");
4322 mname->obj_field_put(_name_offset, name);
4323 }
4324
4325 oop java_lang_invoke_MemberName::type(oop mname) {
4326 assert(is_instance(mname), "wrong type");
4327 return mname->obj_field(_type_offset);
4328 }
4329
4330 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4331 assert(is_instance(mname), "wrong type");
4332 mname->obj_field_put(_type_offset, type);
4333 }
4334
4335 int java_lang_invoke_MemberName::flags(oop mname) {
4336 assert(is_instance(mname), "wrong type");
4337 return mname->int_field(_flags_offset);
4338 }
4339
4340 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4341 assert(is_instance(mname), "wrong type");
4342 mname->int_field_put(_flags_offset, flags);
4343 }
4344
4345
4346 // Return vmtarget from ResolvedMethodName method field through indirection
4347 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4348 assert(is_instance(mname), "wrong type");
4349 oop method = mname->obj_field(_method_offset);
4350 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4351 }
4352
4353 bool java_lang_invoke_MemberName::is_method(oop mname) {
4354 assert(is_instance(mname), "must be MemberName");
4355 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4356 }
4357
4358 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4359 assert(is_instance(mname), "wrong type");
4360 mname->obj_field_put(_method_offset, resolved_method);
4361 }
4362
4363 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4364 assert(is_instance(mname), "wrong type");
4365 return (intptr_t) mname->address_field(_vmindex_offset);
4366 }
4367
4368 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4369 assert(is_instance(mname), "wrong type");
4370 mname->address_field_put(_vmindex_offset, (address) index);
4371 }
4372
4373
4374 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4375 assert(is_instance(resolved_method), "wrong type");
4376 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4377 assert(m->is_method(), "must be");
4378 return m;
4379 }
4380
4381 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4382 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4383 assert(is_instance(resolved_method), "wrong type");
4384 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4385 }
4386
4387 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4388 assert(is_instance(resolved_method), "wrong type");
4389 resolved_method->obj_field_put(_vmholder_offset, holder);
4390 }
4391
4392 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4393 const Method* method = m();
4394
4395 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4396 oop resolved_method = ResolvedMethodTable::find_method(method);
4397 if (resolved_method != nullptr) {
4398 return resolved_method;
4399 }
4400
4401 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4402 if (!k->is_initialized()) {
4403 k->initialize(CHECK_NULL);
4404 }
4405
4406 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4407
4408 NoSafepointVerifier nsv;
4409
4410 if (method->is_old()) {
4411 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4412 method->get_new_method();
4413 }
4414
4415 InstanceKlass* holder = method->method_holder();
4416
4417 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4418 // Add a reference to the loader (actually mirror because hidden classes may not have
4419 // distinct loaders) to ensure the metadata is kept alive.
4420 // This mirror may be different than the one in clazz field.
4421 set_vmholder(new_resolved_method, holder->java_mirror());
4422
4423 // Set flag in class to indicate this InstanceKlass has entries in the table
4424 // to avoid walking table during redefinition if none of the redefined classes
4425 // have any membernames in the table.
4426 holder->set_has_resolved_methods();
4427
4428 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4429 }
4430
4431 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4432 assert(is_instance(lform), "wrong type");
4433 return lform->obj_field(_vmentry_offset);
4434 }
4435
4436
4437 // Support for java_lang_invoke_MethodType
4438
4439 int java_lang_invoke_MethodType::_rtype_offset;
4440 int java_lang_invoke_MethodType::_ptypes_offset;
4441
4442 #define METHODTYPE_FIELDS_DO(macro) \
4443 macro(_rtype_offset, k, "rtype", class_signature, false); \
4444 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4445
4446 void java_lang_invoke_MethodType::compute_offsets() {
4447 InstanceKlass* k = vmClasses::MethodType_klass();
4448 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4449 }
4450
4451 #if INCLUDE_CDS
4452 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4453 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4454 }
4455 #endif
4456
4457 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4458 st->print("(");
4459 objArrayOop pts = ptypes(mt);
4460 if (pts != nullptr) {
4461 for (int i = 0, limit = pts->length(); i < limit; i++) {
4462 java_lang_Class::print_signature(pts->obj_at(i), st);
4463 }
4464 } else {
4465 st->print("null");
4466 }
4467 st->print(")");
4468 oop rt = rtype(mt);
4469 if (rt != nullptr) {
4470 java_lang_Class::print_signature(rt, st);
4471 } else {
4472 st->print("null");
4473 }
4474 }
4475
4476 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4477 ResourceMark rm;
4478 stringStream buffer(128);
4479 print_signature(mt, &buffer);
4480 const char* sigstr = buffer.base();
4481 int siglen = (int) buffer.size();
4482 Symbol *name;
4483 if (!intern_if_not_found) {
4484 name = SymbolTable::probe(sigstr, siglen);
4485 } else {
4486 name = SymbolTable::new_symbol(sigstr, siglen);
4487 }
4488 return name;
4489 }
4490
4491 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4492 if (mt1 == mt2)
4493 return true;
4494 if (rtype(mt1) != rtype(mt2))
4495 return false;
4496 if (ptype_count(mt1) != ptype_count(mt2))
4497 return false;
4498 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4499 if (ptype(mt1, i) != ptype(mt2, i))
4500 return false;
4501 }
4502 return true;
4503 }
4504
4505 oop java_lang_invoke_MethodType::rtype(oop mt) {
4506 assert(is_instance(mt), "must be a MethodType");
4507 return mt->obj_field(_rtype_offset);
4508 }
4509
4510 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4511 assert(is_instance(mt), "must be a MethodType");
4512 return (objArrayOop) mt->obj_field(_ptypes_offset);
4513 }
4514
4515 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4516 return ptypes(mt)->obj_at(idx);
4517 }
4518
4519 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4520 return ptypes(mt)->length();
4521 }
4522
4523 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4524 objArrayOop pts = ptypes(mt);
4525 int count = pts->length();
4526 int slots = 0;
4527 for (int i = 0; i < count; i++) {
4528 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4529 slots += type2size[bt];
4530 }
4531 return slots;
4532 }
4533
4534 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4535 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4536 return type2size[bt];
4537 }
4538
4539
4540 // Support for java_lang_invoke_CallSite
4541
4542 int java_lang_invoke_CallSite::_target_offset;
4543 int java_lang_invoke_CallSite::_context_offset;
4544
4545 #define CALLSITE_FIELDS_DO(macro) \
4546 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4547 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4548
4549 void java_lang_invoke_CallSite::compute_offsets() {
4550 InstanceKlass* k = vmClasses::CallSite_klass();
4551 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4552 }
4553
4554 #if INCLUDE_CDS
4555 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4556 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4557 }
4558 #endif
4559
4560 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4561 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4562
4563 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4564 return dep_oop;
4565 }
4566
4567 // Support for java_lang_invoke_ConstantCallSite
4568
4569 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4570
4571 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4572 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4573
4574 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4575 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4576 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4577 }
4578
4579 #if INCLUDE_CDS
4580 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4581 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4582 }
4583 #endif
4584
4585 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4586
4587 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4588 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4589
4590 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4591 InstanceKlass* k = vmClasses::Context_klass();
4592 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4593 }
4594
4595 #if INCLUDE_CDS
4596 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4597 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4598 }
4599 #endif
4600
4601 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4602 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4603 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4604 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4605 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4606 return dep_ctx;
4607 }
4608
4609 // Support for java_security_AccessControlContext
4610
4611 int java_security_AccessControlContext::_context_offset;
4612 int java_security_AccessControlContext::_privilegedContext_offset;
4613 int java_security_AccessControlContext::_isPrivileged_offset;
4614 int java_security_AccessControlContext::_isAuthorized_offset;
4615
4616 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4617 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4618 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4619 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4620 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4621
4622 void java_security_AccessControlContext::compute_offsets() {
4623 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4624 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4625 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4626 }
4627
4628 #if INCLUDE_CDS
4629 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4630 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4631 }
4632 #endif
4633
4634 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4635 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4636 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4637 // Ensure klass is initialized
4638 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4639 // Allocate result
4640 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4641 // Fill in values
4642 result->obj_field_put(_context_offset, context());
4643 result->obj_field_put(_privilegedContext_offset, privileged_context());
4644 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4645 result->bool_field_put(_isAuthorized_offset, true);
4646 return result;
4647 }
4648
4649
4650 // Support for java_lang_ClassLoader
4651
4652 int java_lang_ClassLoader::_loader_data_offset;
4653 int java_lang_ClassLoader::_parallelCapable_offset;
4654 int java_lang_ClassLoader::_name_offset;
4655 int java_lang_ClassLoader::_nameAndId_offset;
4656 int java_lang_ClassLoader::_unnamedModule_offset;
4657 int java_lang_ClassLoader::_parent_offset;
4658
4659 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4660 assert(loader != nullptr, "loader must not be null");
4661 assert(oopDesc::is_oop(loader), "loader must be oop");
4662 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4663 }
4664
4665 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4666 assert(loader != nullptr, "loader must not be null");
4667 assert(oopDesc::is_oop(loader), "loader must be oop");
4668 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4669 }
4670
4671 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4672 assert(loader != nullptr, "loader must not be null");
4673 assert(oopDesc::is_oop(loader), "loader must be oop");
4674 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4675 }
4676
4677 #define CLASSLOADER_FIELDS_DO(macro) \
4678 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4679 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4680 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4681 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4682 macro(_parent_offset, k1, "parent", classloader_signature, false)
4683
4684 void java_lang_ClassLoader::compute_offsets() {
4685 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4686 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4687
4688 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4689 }
4690
4691 #if INCLUDE_CDS
4692 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4693 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4694 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4695 }
4696 #endif
4697
4698 oop java_lang_ClassLoader::parent(oop loader) {
4699 assert(is_instance(loader), "loader must be oop");
4700 return loader->obj_field(_parent_offset);
4701 }
4702
4703 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4704 assert(is_instance(loader), "loader must be oop");
4705 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4706 }
4707
4708 // Returns the name field of this class loader. If the name field has not
4709 // been set, null will be returned.
4710 oop java_lang_ClassLoader::name(oop loader) {
4711 assert(is_instance(loader), "loader must be oop");
4712 return loader->obj_field(_name_offset);
4713 }
4714
4715 // Returns the nameAndId field of this class loader. The format is
4716 // as follows:
4717 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4718 // If the defining loader has no name then <qualified-class-name> @<id>
4719 // If built-in loader, then omit '@<id>' as there is only one instance.
4720 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4721 oop java_lang_ClassLoader::nameAndId(oop loader) {
4722 assert(is_instance(loader), "loader must be oop");
4723 return loader->obj_field(_nameAndId_offset);
4724 }
4725
4726 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4727 assert(is_instance(loader), "loader must be oop");
4728 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4729 oop acl = loader;
4730 debug_only(jint loop_count = 0);
4731 // This loop taken verbatim from ClassLoader.java:
4732 do {
4733 acl = parent(acl);
4734 if (cl == acl) {
4735 return true;
4736 }
4737 assert(++loop_count > 0, "loop_count overflow");
4738 } while (acl != nullptr);
4739 return false;
4740 }
4741
4742 bool java_lang_ClassLoader::is_instance(oop obj) {
4743 return obj != nullptr && is_subclass(obj->klass());
4744 }
4745
4746
4747 // For class loader classes, parallelCapable defined
4748 // based on non-null field
4749 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4750 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4751 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4752 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4753 }
4754
4755 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4756 // Fix for 4474172; see evaluation for more details
4757 loader = non_reflection_class_loader(loader);
4758
4759 oop cl = SystemDictionary::java_system_loader();
4760 while(cl != nullptr) {
4761 if (cl == loader) return true;
4762 cl = parent(cl);
4763 }
4764 return false;
4765 }
4766
4767 // Return true if this is one of the class loaders associated with
4768 // the generated bytecodes for serialization constructor returned
4769 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
4770 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4771 if (loader != nullptr) {
4772 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4773 // This might be null in non-1.4 JDKs
4774 return (delegating_cl_class != nullptr && loader->is_a(delegating_cl_class));
4775 }
4776 return false;
4777 }
4778
4779 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4780 // See whether this is one of the class loaders associated with
4781 // the generated bytecodes for reflection, and if so, "magically"
4782 // delegate to its parent to prevent class loading from occurring
4783 // in places where applications using reflection didn't expect it.
4784 if (is_reflection_class_loader(loader)) {
4785 return parent(loader);
4786 }
4787 return loader;
4788 }
4789
4790 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4791 assert(is_instance(loader), "loader must be oop");
4792 return loader->obj_field(_unnamedModule_offset);
4793 }
4794
4795 // Support for java_lang_System
4796 //
4797
4798 int java_lang_System::_static_in_offset;
4799 int java_lang_System::_static_out_offset;
4800 int java_lang_System::_static_err_offset;
4801 int java_lang_System::_static_security_offset;
4802 int java_lang_System::_static_allow_security_offset;
4803 int java_lang_System::_static_never_offset;
4804
4805 #define SYSTEM_FIELDS_DO(macro) \
4806 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4807 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4808 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4809 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4810 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4811 macro(_static_never_offset, k, "NEVER", int_signature, true)
4812
4813 void java_lang_System::compute_offsets() {
4814 InstanceKlass* k = vmClasses::System_klass();
4815 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4816 }
4817
4818 // This field tells us that a security manager can never be installed so we
4819 // can completely skip populating the ProtectionDomainCacheTable.
4820 bool java_lang_System::allow_security_manager() {
4821 static int initialized = false;
4822 static bool allowed = true; // default
4823 if (!initialized) {
4824 oop base = vmClasses::System_klass()->static_field_base_raw();
4825 int never = base->int_field(_static_never_offset);
4826 allowed = (base->int_field(_static_allow_security_offset) != never);
4827 initialized = true;
4828 }
4829 return allowed;
4830 }
4831
4832 // This field tells us that a security manager is installed.
4833 bool java_lang_System::has_security_manager() {
4834 oop base = vmClasses::System_klass()->static_field_base_raw();
4835 return base->obj_field(_static_security_offset) != nullptr;
4836 }
4837
4838 #if INCLUDE_CDS
4839 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4840 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4841 }
4842 #endif
4843
4844 // Support for jdk_internal_misc_UnsafeConstants
4845 //
4846 class UnsafeConstantsFixup : public FieldClosure {
4847 private:
4848 int _address_size;
4849 int _page_size;
4850 bool _big_endian;
4851 bool _use_unaligned_access;
4852 int _data_cache_line_flush_size;
4853 public:
4854 UnsafeConstantsFixup() {
4855 // round up values for all static final fields
4856 _address_size = sizeof(void*);
4857 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4858 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4859 _use_unaligned_access = UseUnalignedAccesses;
4860 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4861 }
4862
4863 void do_field(fieldDescriptor* fd) {
4864 oop mirror = fd->field_holder()->java_mirror();
4865 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4866 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4867 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4868 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4869 if (fd->name() == vmSymbols::address_size_name()) {
4870 mirror->int_field_put(fd->offset(), _address_size);
4871 } else if (fd->name() == vmSymbols::page_size_name()) {
4872 mirror->int_field_put(fd->offset(), _page_size);
4873 } else if (fd->name() == vmSymbols::big_endian_name()) {
4874 mirror->bool_field_put(fd->offset(), _big_endian);
4875 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4876 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4877 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4878 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4879 } else {
4880 assert(false, "unexpected UnsafeConstants field");
4881 }
4882 }
4883 };
4884
4885 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4886 UnsafeConstantsFixup fixup;
4887 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4888 }
4889
4890
4891 // java_lang_StackTraceElement
4892
4893 int java_lang_StackTraceElement::_methodName_offset;
4894 int java_lang_StackTraceElement::_fileName_offset;
4895 int java_lang_StackTraceElement::_lineNumber_offset;
4896 int java_lang_StackTraceElement::_moduleName_offset;
4897 int java_lang_StackTraceElement::_moduleVersion_offset;
4898 int java_lang_StackTraceElement::_classLoaderName_offset;
4899 int java_lang_StackTraceElement::_declaringClass_offset;
4900 int java_lang_StackTraceElement::_declaringClassObject_offset;
4901
4902 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4903 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4904 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4905 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4906 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4907 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4908 macro(_methodName_offset, k, "methodName", string_signature, false); \
4909 macro(_fileName_offset, k, "fileName", string_signature, false); \
4910 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4911
4912 // Support for java_lang_StackTraceElement
4913 void java_lang_StackTraceElement::compute_offsets() {
4914 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4915 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4916 }
4917
4918 #if INCLUDE_CDS
4919 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4920 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4921 }
4922 #endif
4923
4924 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4925 element->obj_field_put(_fileName_offset, value);
4926 }
4927
4928 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4929 element->obj_field_put(_declaringClass_offset, value);
4930 }
4931
4932 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4933 element->obj_field_put(_methodName_offset, value);
4934 }
4935
4936 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4937 element->int_field_put(_lineNumber_offset, value);
4938 }
4939
4940 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4941 element->obj_field_put(_moduleName_offset, value);
4942 }
4943
4944 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4945 element->obj_field_put(_moduleVersion_offset, value);
4946 }
4947
4948 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4949 element->obj_field_put(_classLoaderName_offset, value);
4950 }
4951
4952 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4953 element->obj_field_put(_declaringClassObject_offset, value);
4954 }
4955
4956
4957 // java_lang_AssertionStatusDirectives
4958
4959 int java_lang_AssertionStatusDirectives::_classes_offset;
4960 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4961 int java_lang_AssertionStatusDirectives::_packages_offset;
4962 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4963 int java_lang_AssertionStatusDirectives::_deflt_offset;
4964
4965 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4966 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4967 macro(_classes_offset, k, "classes", string_array_signature, false); \
4968 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4969 macro(_packages_offset, k, "packages", string_array_signature, false); \
4970 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4971 macro(_deflt_offset, k, "deflt", bool_signature, false)
4972
4973 void java_lang_AssertionStatusDirectives::compute_offsets() {
4974 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4975 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4976 }
4977
4978 #if INCLUDE_CDS
4979 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4980 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4981 }
4982 #endif
4983
4984 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4985 o->obj_field_put(_classes_offset, val);
4986 }
4987
4988 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4989 o->obj_field_put(_classEnabled_offset, val);
4990 }
4991
4992 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4993 o->obj_field_put(_packages_offset, val);
4994 }
4995
4996 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4997 o->obj_field_put(_packageEnabled_offset, val);
4998 }
4999
5000 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
5001 o->bool_field_put(_deflt_offset, val);
5002 }
5003
5004 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5005
5006 #define AOS_FIELDS_DO(macro) \
5007 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5008
5009 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5010 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5011 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5012 }
5013
5014 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5015 assert(_owner_offset != 0, "Must be initialized");
5016 return obj->obj_field(_owner_offset);
5017 }
5018
5019 #if INCLUDE_CDS
5020 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5021 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5022 }
5023 #endif
5024
5025 int vector_VectorPayload::_payload_offset;
5026
5027 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5028 macro(_payload_offset, k, "payload", object_signature, false)
5029
5030 void vector_VectorPayload::compute_offsets() {
5031 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5032 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5033 }
5034
5035 #if INCLUDE_CDS
5036 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5037 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5038 }
5039 #endif
5040
5041 void vector_VectorPayload::set_payload(oop o, oop val) {
5042 o->obj_field_put(_payload_offset, val);
5043 }
5044
5045 bool vector_VectorPayload::is_instance(oop obj) {
5046 return obj != nullptr && is_subclass(obj->klass());
5047 }
5048
5049 int java_lang_Integer_IntegerCache::_static_cache_offset;
5050 int java_lang_Long_LongCache::_static_cache_offset;
5051 int java_lang_Character_CharacterCache::_static_cache_offset;
5052 int java_lang_Short_ShortCache::_static_cache_offset;
5053 int java_lang_Byte_ByteCache::_static_cache_offset;
5054
5055 #define INTEGER_CACHE_FIELDS_DO(macro) \
5056 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5057
5058 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5059 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5060 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5061 }
5062
5063 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5064 oop base = ik->static_field_base_raw();
5065 return objArrayOop(base->obj_field(_static_cache_offset));
5066 }
5067
5068 Symbol* java_lang_Integer_IntegerCache::symbol() {
5069 return vmSymbols::java_lang_Integer_IntegerCache();
5070 }
5071
5072 #if INCLUDE_CDS
5073 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5074 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5075 }
5076 #endif
5077 #undef INTEGER_CACHE_FIELDS_DO
5078
5079 jint java_lang_Integer::value(oop obj) {
5080 jvalue v;
5081 java_lang_boxing_object::get_value(obj, &v);
5082 return v.i;
5083 }
5084
5085 #define LONG_CACHE_FIELDS_DO(macro) \
5086 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5087
5088 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5089 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5090 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5091 }
5092
5093 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5094 oop base = ik->static_field_base_raw();
5095 return objArrayOop(base->obj_field(_static_cache_offset));
5096 }
5097
5098 Symbol* java_lang_Long_LongCache::symbol() {
5099 return vmSymbols::java_lang_Long_LongCache();
5100 }
5101
5102 #if INCLUDE_CDS
5103 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5104 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5105 }
5106 #endif
5107 #undef LONG_CACHE_FIELDS_DO
5108
5109 jlong java_lang_Long::value(oop obj) {
5110 jvalue v;
5111 java_lang_boxing_object::get_value(obj, &v);
5112 return v.j;
5113 }
5114
5115 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5116 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5117
5118 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5119 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5120 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5121 }
5122
5123 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5124 oop base = ik->static_field_base_raw();
5125 return objArrayOop(base->obj_field(_static_cache_offset));
5126 }
5127
5128 Symbol* java_lang_Character_CharacterCache::symbol() {
5129 return vmSymbols::java_lang_Character_CharacterCache();
5130 }
5131
5132 #if INCLUDE_CDS
5133 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5134 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5135 }
5136 #endif
5137 #undef CHARACTER_CACHE_FIELDS_DO
5138
5139 jchar java_lang_Character::value(oop obj) {
5140 jvalue v;
5141 java_lang_boxing_object::get_value(obj, &v);
5142 return v.c;
5143 }
5144
5145 #define SHORT_CACHE_FIELDS_DO(macro) \
5146 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5147
5148 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5149 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5150 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5151 }
5152
5153 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5154 oop base = ik->static_field_base_raw();
5155 return objArrayOop(base->obj_field(_static_cache_offset));
5156 }
5157
5158 Symbol* java_lang_Short_ShortCache::symbol() {
5159 return vmSymbols::java_lang_Short_ShortCache();
5160 }
5161
5162 #if INCLUDE_CDS
5163 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5164 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5165 }
5166 #endif
5167 #undef SHORT_CACHE_FIELDS_DO
5168
5169 jshort java_lang_Short::value(oop obj) {
5170 jvalue v;
5171 java_lang_boxing_object::get_value(obj, &v);
5172 return v.s;
5173 }
5174
5175 #define BYTE_CACHE_FIELDS_DO(macro) \
5176 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5177
5178 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5179 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5180 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5181 }
5182
5183 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5184 oop base = ik->static_field_base_raw();
5185 return objArrayOop(base->obj_field(_static_cache_offset));
5186 }
5187
5188 Symbol* java_lang_Byte_ByteCache::symbol() {
5189 return vmSymbols::java_lang_Byte_ByteCache();
5190 }
5191
5192 #if INCLUDE_CDS
5193 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5194 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5195 }
5196 #endif
5197 #undef BYTE_CACHE_FIELDS_DO
5198
5199 jbyte java_lang_Byte::value(oop obj) {
5200 jvalue v;
5201 java_lang_boxing_object::get_value(obj, &v);
5202 return v.b;
5203 }
5204
5205 int java_lang_Boolean::_static_TRUE_offset;
5206 int java_lang_Boolean::_static_FALSE_offset;
5207
5208 #define BOOLEAN_FIELDS_DO(macro) \
5209 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5210 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5211
5212
5213 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5214 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5215 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5216 }
5217
5218 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5219 oop base = ik->static_field_base_raw();
5220 return base->obj_field(_static_TRUE_offset);
5221 }
5222
5223 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5224 oop base = ik->static_field_base_raw();
5225 return base->obj_field(_static_FALSE_offset);
5226 }
5227
5228 Symbol* java_lang_Boolean::symbol() {
5229 return vmSymbols::java_lang_Boolean();
5230 }
5231
5232 #if INCLUDE_CDS
5233 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5234 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5235 }
5236 #endif
5237 #undef BOOLEAN_CACHE_FIELDS_DO
5238
5239 jboolean java_lang_Boolean::value(oop obj) {
5240 jvalue v;
5241 java_lang_boxing_object::get_value(obj, &v);
5242 return v.z;
5243 }
5244
5245 // java_lang_reflect_RecordComponent
5246
5247 int java_lang_reflect_RecordComponent::_clazz_offset;
5248 int java_lang_reflect_RecordComponent::_name_offset;
5249 int java_lang_reflect_RecordComponent::_type_offset;
5250 int java_lang_reflect_RecordComponent::_accessor_offset;
5251 int java_lang_reflect_RecordComponent::_signature_offset;
5252 int java_lang_reflect_RecordComponent::_annotations_offset;
5253 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5254
5255 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5256 macro(_clazz_offset, k, "clazz", class_signature, false); \
5257 macro(_name_offset, k, "name", string_signature, false); \
5258 macro(_type_offset, k, "type", class_signature, false); \
5259 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5260 macro(_signature_offset, k, "signature", string_signature, false); \
5261 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5262 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5263
5264 // Support for java_lang_reflect_RecordComponent
5265 void java_lang_reflect_RecordComponent::compute_offsets() {
5266 InstanceKlass* k = vmClasses::RecordComponent_klass();
5267 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5268 }
5269
5270 #if INCLUDE_CDS
5271 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5272 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5273 }
5274 #endif
5275
5276 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5277 element->obj_field_put(_clazz_offset, value);
5278 }
5279
5280 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5281 element->obj_field_put(_name_offset, value);
5282 }
5283
5284 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5285 element->obj_field_put(_type_offset, value);
5286 }
5287
5288 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5289 element->obj_field_put(_accessor_offset, value);
5290 }
5291
5292 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5293 element->obj_field_put(_signature_offset, value);
5294 }
5295
5296 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5297 element->obj_field_put(_annotations_offset, value);
5298 }
5299
5300 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5301 element->obj_field_put(_typeAnnotations_offset, value);
5302 }
5303
5304 // java_lang_InternalError
5305 int java_lang_InternalError::_during_unsafe_access_offset;
5306
5307 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5308 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5309 }
5310
5311 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5312 return internal_error->bool_field(_during_unsafe_access_offset);
5313 }
5314
5315 void java_lang_InternalError::compute_offsets() {
5316 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5317 }
5318
5319 #if INCLUDE_CDS
5320 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5321 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5322 }
5323 #endif
5324
5325 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5326 f(java_lang_Class) \
5327 f(java_lang_String) \
5328 f(java_lang_ref_Reference) \
5329 //end
5330
5331 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5332 f(java_lang_System) \
5333 f(java_lang_ClassLoader) \
5334 f(java_lang_Throwable) \
5335 f(java_lang_Thread) \
5336 f(java_lang_Thread_FieldHolder) \
5337 f(java_lang_Thread_Constants) \
5338 f(java_lang_ThreadGroup) \
5339 f(java_lang_VirtualThread) \
5340 f(java_lang_InternalError) \
5341 f(java_lang_AssertionStatusDirectives) \
5342 f(java_lang_ref_SoftReference) \
5343 f(java_lang_invoke_MethodHandle) \
5344 f(java_lang_invoke_DirectMethodHandle) \
5345 f(java_lang_invoke_MemberName) \
5346 f(java_lang_invoke_ResolvedMethodName) \
5347 f(java_lang_invoke_LambdaForm) \
5348 f(java_lang_invoke_MethodType) \
5349 f(java_lang_invoke_CallSite) \
5350 f(java_lang_invoke_ConstantCallSite) \
5351 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5352 f(java_security_AccessControlContext) \
5353 f(java_lang_reflect_AccessibleObject) \
5354 f(java_lang_reflect_Method) \
5355 f(java_lang_reflect_Constructor) \
5356 f(java_lang_reflect_Field) \
5357 f(java_lang_reflect_RecordComponent) \
5358 f(reflect_ConstantPool) \
5359 f(java_lang_reflect_Parameter) \
5360 f(java_lang_Module) \
5361 f(java_lang_StackTraceElement) \
5362 f(java_lang_ClassFrameInfo) \
5363 f(java_lang_StackFrameInfo) \
5364 f(java_lang_LiveStackFrameInfo) \
5365 f(jdk_internal_vm_ContinuationScope) \
5366 f(jdk_internal_vm_Continuation) \
5367 f(jdk_internal_vm_StackChunk) \
5368 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5369 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5370 f(jdk_internal_foreign_abi_ABIDescriptor) \
5371 f(jdk_internal_foreign_abi_VMStorage) \
5372 f(jdk_internal_foreign_abi_CallConv) \
5373 f(jdk_internal_misc_UnsafeConstants) \
5374 f(java_lang_boxing_object) \
5375 f(vector_VectorPayload) \
5376 //end
5377
5378 #define BASIC_JAVA_CLASSES_DO(f) \
5379 BASIC_JAVA_CLASSES_DO_PART1(f) \
5380 BASIC_JAVA_CLASSES_DO_PART2(f)
5381
5382 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5383
5384 // Compute field offsets of all the classes in this file
5385 void JavaClasses::compute_offsets() {
5386 if (UseSharedSpaces) {
5387 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5388 JvmtiExport::has_early_class_hook_env()),
5389 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5390 // None of the classes used by the rest of this function can be replaced by
5391 // JVMTI ClassFileLoadHook.
5392 // We are safe to use the archived offsets, which have already been restored
5393 // by JavaClasses::serialize_offsets, without computing the offsets again.
5394 return;
5395 }
5396
5397 // We have already called the compute_offsets() of the
5398 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5399 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5400 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5401 }
5402
5403 #if INCLUDE_CDS
5404 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5405
5406 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5407 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5408 }
5409 #endif
5410
5411 #if INCLUDE_CDS_JAVA_HEAP
5412 bool JavaClasses::is_supported_for_archiving(oop obj) {
5413 Klass* klass = obj->klass();
5414
5415 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5416 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5417 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5418 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5419 // So for now we cannot not support these classes for archiving.
5420 //
5421 // These objects typically are not referenced by static fields, but rather by resolved
5422 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5423 klass == vmClasses::ResolvedMethodName_klass() ||
5424 klass == vmClasses::MemberName_klass() ||
5425 klass == vmClasses::Context_klass() ||
5426 // It's problematic to archive Reference objects. One of the reasons is that
5427 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5428 klass->is_subclass_of(vmClasses::Reference_klass())) {
5429 return false;
5430 }
5431
5432 return true;
5433 }
5434 #endif
5435
5436 #ifndef PRODUCT
5437
5438 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5439
5440 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5441 const char* field_sig) {
5442 EXCEPTION_MARK;
5443 fieldDescriptor fd;
5444 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5445 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5446 InstanceKlass* ik = InstanceKlass::cast(k);
5447 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5448 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5449 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5450 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5451 return false;
5452 }
5453 if (fd.is_static()) {
5454 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5455 return false;
5456 }
5457 if (fd.offset() == deserialized_offset ) {
5458 return true;
5459 } else {
5460 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5461 klass_name, field_name, deserialized_offset, fd.offset());
5462 return false;
5463 }
5464 }
5465
5466 void JavaClasses::check_offsets() {
5467 bool valid = true;
5468
5469 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5470 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5471
5472 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5473 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5474
5475 // Boxed primitive objects (java_lang_boxing_object)
5476
5477 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5478 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5479 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5480 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5481 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5482 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5483 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5484 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5485
5486 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5487 }
5488
5489 #endif // PRODUCT
5490
5491 int InjectedField::compute_offset() {
5492 InstanceKlass* ik = InstanceKlass::cast(klass());
5493 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5494 if (!may_be_java && !fs.field_flags().is_injected()) {
5495 // Only look at injected fields
5496 continue;
5497 }
5498 if (fs.name() == name() && fs.signature() == signature()) {
5499 return fs.offset();
5500 }
5501 }
5502 ResourceMark rm;
5503 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)" : "");
5504 #ifndef PRODUCT
5505 ik->print();
5506 tty->print_cr("all fields:");
5507 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5508 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5509 }
5510 #endif //PRODUCT
5511 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5512 return -1;
5513 }
5514
5515 void javaClasses_init() {
5516 JavaClasses::compute_offsets();
5517 JavaClasses::check_offsets();
5518 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5519 }