1 /*
2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConfig.hpp"
29 #include "cds/heapShared.hpp"
30 #include "cds/metaspaceShared.hpp"
31 #include "classfile/altHashing.hpp"
32 #include "classfile/classLoaderData.inline.hpp"
33 #include "classfile/javaClasses.inline.hpp"
34 #include "classfile/javaClassesImpl.hpp"
35 #include "classfile/javaThreadStatus.hpp"
36 #include "classfile/moduleEntry.hpp"
37 #include "classfile/stringTable.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/debugInfo.hpp"
43 #include "code/dependencyContext.hpp"
44 #include "code/pcDesc.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/interpreter.hpp"
47 #include "interpreter/linkResolver.hpp"
48 #include "jvm.h"
49 #include "logging/log.hpp"
50 #include "logging/logStream.hpp"
51 #include "memory/oopFactory.hpp"
52 #include "memory/resourceArea.hpp"
53 #include "memory/universe.hpp"
54 #include "oops/fieldInfo.hpp"
55 #include "oops/fieldStreams.inline.hpp"
56 #include "oops/instanceKlass.inline.hpp"
57 #include "oops/instanceMirrorKlass.hpp"
58 #include "oops/klass.hpp"
59 #include "oops/klass.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/objArrayKlass.hpp"
62 #include "oops/objArrayOop.inline.hpp"
63 #include "oops/oopCast.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "oops/symbol.hpp"
66 #include "oops/recordComponent.hpp"
67 #include "oops/typeArrayOop.inline.hpp"
68 #include "prims/jvmtiExport.hpp"
69 #include "prims/methodHandles.hpp"
70 #include "prims/resolvedMethodTable.hpp"
71 #include "runtime/continuationEntry.inline.hpp"
72 #include "runtime/continuationJavaClasses.inline.hpp"
73 #include "runtime/fieldDescriptor.inline.hpp"
74 #include "runtime/frame.inline.hpp"
75 #include "runtime/handles.inline.hpp"
76 #include "runtime/handshake.hpp"
77 #include "runtime/init.hpp"
78 #include "runtime/interfaceSupport.inline.hpp"
79 #include "runtime/java.hpp"
80 #include "runtime/javaCalls.hpp"
81 #include "runtime/javaThread.hpp"
82 #include "runtime/jniHandles.inline.hpp"
83 #include "runtime/reflectionUtils.hpp"
84 #include "runtime/safepoint.hpp"
85 #include "runtime/safepointVerifiers.hpp"
86 #include "runtime/threadSMR.hpp"
87 #include "runtime/vframe.inline.hpp"
88 #include "runtime/vm_version.hpp"
89 #include "utilities/align.hpp"
90 #include "utilities/globalDefinitions.hpp"
91 #include "utilities/growableArray.hpp"
92 #include "utilities/preserveException.hpp"
93 #include "utilities/utf8.hpp"
94 #if INCLUDE_JVMCI
95 #include "jvmci/jvmciJavaClasses.hpp"
96 #endif
97
98 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
99 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
100
101 InjectedField JavaClasses::_injected_fields[] = {
102 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
103 };
104
105 // Register native methods of Object
106 void java_lang_Object::register_natives(TRAPS) {
107 InstanceKlass* obj = vmClasses::Object_klass();
108 Method::register_native(obj, vmSymbols::hashCode_name(),
109 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
110 Method::register_native(obj, vmSymbols::wait_name(),
111 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
112 Method::register_native(obj, vmSymbols::notify_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
114 Method::register_native(obj, vmSymbols::notifyAll_name(),
115 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
116 Method::register_native(obj, vmSymbols::clone_name(),
117 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
118 }
119
120 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
121 return _injected_fields[(int)id].compute_offset();
122 }
123
124 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
125 *field_count = 0;
126
127 vmSymbolID sid = vmSymbols::find_sid(class_name);
128 if (sid == vmSymbolID::NO_SID) {
129 // Only well known classes can inject fields
130 return nullptr;
131 }
132
133 int count = 0;
134 int start = -1;
135
136 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
137 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
138 count++; \
139 if (start == -1) { \
140 start = (int)InjectedFieldID::klass##_##name##_enum; \
141 } \
142 }
143 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
144 #undef LOOKUP_INJECTED_FIELD
145
146 if (start != -1) {
147 *field_count = count;
148 return _injected_fields + start;
149 }
150 return nullptr;
151 }
152
153
154 // Helpful routine for computing field offsets at run time rather than hardcoding them
155 // Finds local fields only, including static fields. Static field offsets are from the
156 // beginning of the mirror.
157 void JavaClasses::compute_offset(int &dest_offset,
158 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
159 bool is_static) {
160 fieldDescriptor fd;
161 if (ik == nullptr) {
162 ResourceMark rm;
163 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
164 vm_exit_during_initialization("Invalid layout of well-known class");
165 }
166
167 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
168 ResourceMark rm;
169 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
170 name_symbol->as_C_string(), signature_symbol->as_C_string());
171 #ifndef PRODUCT
172 // Prints all fields and offsets
173 Log(class) lt;
174 LogStream ls(lt.error());
175 ik->print_on(&ls);
176 #endif //PRODUCT
177 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
178 }
179 dest_offset = fd.offset();
180 }
181
182 // Overloading to pass name as a string.
183 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
184 const char* name_string, Symbol* signature_symbol,
185 bool is_static) {
186 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
187 if (name == nullptr) {
188 ResourceMark rm;
189 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
190 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
191 }
192 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
193 }
194
195 // java_lang_String
196
197 int java_lang_String::_value_offset;
198 int java_lang_String::_hash_offset;
199 int java_lang_String::_hashIsZero_offset;
200 int java_lang_String::_coder_offset;
201 int java_lang_String::_flags_offset;
202
203 bool java_lang_String::_initialized;
204
205
206 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
207 uint8_t* addr = flags_addr(java_string);
208 uint8_t value = Atomic::load(addr);
209 while ((value & flag_mask) == 0) {
210 uint8_t old_value = value;
211 value |= flag_mask;
212 value = Atomic::cmpxchg(addr, old_value, value);
213 if (value == old_value) return false; // Flag bit changed from 0 to 1.
214 }
215 return true; // Flag bit is already 1.
216 }
217
218 #define STRING_FIELDS_DO(macro) \
219 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
220 macro(_hash_offset, k, "hash", int_signature, false); \
221 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
222 macro(_coder_offset, k, "coder", byte_signature, false);
223
224 void java_lang_String::compute_offsets() {
225 if (_initialized) {
226 return;
227 }
228
229 InstanceKlass* k = vmClasses::String_klass();
230 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
231 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
232
233 _initialized = true;
234 }
235
236 #if INCLUDE_CDS
237 void java_lang_String::serialize_offsets(SerializeClosure* f) {
238 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
239 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
240 f->do_bool(&_initialized);
241 }
242 #endif
243
244 class CompactStringsFixup : public FieldClosure {
245 private:
246 bool _value;
247
248 public:
249 CompactStringsFixup(bool value) : _value(value) {}
250
251 void do_field(fieldDescriptor* fd) {
252 if (fd->name() == vmSymbols::compact_strings_name()) {
253 oop mirror = fd->field_holder()->java_mirror();
254 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
255 assert(mirror != nullptr, "String must have mirror already");
256 mirror->bool_field_put(fd->offset(), _value);
257 }
258 }
259 };
260
261 void java_lang_String::set_compact_strings(bool value) {
262 CompactStringsFixup fix(value);
263 vmClasses::String_klass()->do_local_static_fields(&fix);
264 }
265
266 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
267 assert(_initialized, "Must be initialized");
268 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
269
270 // Create the String object first, so there's a chance that the String
271 // and the char array it points to end up in the same cache line.
272 oop obj;
273 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
274
275 // Create the char array. The String object must be handlized here
276 // because GC can happen as a result of the allocation attempt.
277 Handle h_obj(THREAD, obj);
278 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
279 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
280
281 // Point the String at the char array
282 obj = h_obj();
283 set_value(obj, buffer);
284 // No need to zero the offset, allocation zero'ed the entire String object
285 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
286 return h_obj;
287 }
288
289 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
290 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
291 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
292 typeArrayOop buffer = value(h_obj());
293 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
294 if (is_latin1) {
295 for (int index = 0; index < length; index++) {
296 buffer->byte_at_put(index, (jbyte)unicode[index]);
297 }
298 } else {
299 for (int index = 0; index < length; index++) {
300 buffer->char_at_put(index, unicode[index]);
301 }
302 }
303
304 #ifdef ASSERT
305 {
306 ResourceMark rm;
307 char* expected = UNICODE::as_utf8(unicode, length);
308 char* actual = as_utf8_string(h_obj());
309 if (strcmp(expected, actual) != 0) {
310 fatal("Unicode conversion failure: %s --> %s", expected, actual);
311 }
312 }
313 #endif
314
315 return h_obj;
316 }
317
318 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
319 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
320 return h_obj();
321 }
322
323 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
324 if (utf8_str == nullptr) {
325 return Handle();
326 }
327 bool has_multibyte, is_latin1;
328 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
329 if (!CompactStrings) {
330 has_multibyte = true;
331 is_latin1 = false;
332 }
333
334 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
335 if (length > 0) {
336 if (!has_multibyte) {
337 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
338 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
339 } else if (is_latin1) {
340 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
341 } else {
342 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
343 }
344 }
345
346 #ifdef ASSERT
347 // This check is too strict when the input string is not a valid UTF8.
348 // For example, it may be created with arbitrary content via jni_NewStringUTF.
349 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
350 ResourceMark rm;
351 const char* expected = utf8_str;
352 char* actual = as_utf8_string(h_obj());
353 if (strcmp(expected, actual) != 0) {
354 fatal("String conversion failure: %s --> %s", expected, actual);
355 }
356 }
357 #endif
358
359 return h_obj;
360 }
361
362 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
363 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
364 return h_obj();
365 }
366
367 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
368 const char* utf8_str = (char*)symbol->bytes();
369 int utf8_len = symbol->utf8_length();
370
371 bool has_multibyte, is_latin1;
372 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
373 if (!CompactStrings) {
374 has_multibyte = true;
375 is_latin1 = false;
376 }
377
378 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
379 if (length > 0) {
380 if (!has_multibyte) {
381 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
382 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
383 } else if (is_latin1) {
384 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
385 } else {
386 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
387 }
388 }
389
390 #ifdef ASSERT
391 {
392 ResourceMark rm;
393 const char* expected = symbol->as_utf8();
394 char* actual = as_utf8_string(h_obj());
395 if (strncmp(expected, actual, utf8_len) != 0) {
396 fatal("Symbol conversion failure: %s --> %s", expected, actual);
397 }
398 }
399 #endif
400
401 return h_obj;
402 }
403
404 // Converts a C string to a Java String based on current encoding
405 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
406 assert(str != nullptr, "bad arguments");
407
408 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
409 static to_java_string_fn_t _to_java_string_fn = nullptr;
410
411 if (_to_java_string_fn == nullptr) {
412 void *lib_handle = os::native_java_library();
413 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
414 #if defined(_WIN32) && !defined(_WIN64)
415 if (_to_java_string_fn == nullptr) {
416 // On 32 bit Windows, also try __stdcall decorated name
417 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
418 }
419 #endif
420 if (_to_java_string_fn == nullptr) {
421 fatal("JNU_NewStringPlatform missing");
422 }
423 }
424
425 jstring js = nullptr;
426 {
427 JavaThread* thread = THREAD;
428 HandleMark hm(thread);
429 ThreadToNativeFromVM ttn(thread);
430 js = (_to_java_string_fn)(thread->jni_environment(), str);
431 }
432
433 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
434 JNIHandles::destroy_local(js); // destroy local JNIHandle.
435 return native_platform_string;
436 }
437
438 // Converts a Java String to a native C string that can be used for
439 // native OS calls.
440 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
441 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
442 static to_platform_string_fn_t _to_platform_string_fn = nullptr;
443
444 if (_to_platform_string_fn == nullptr) {
445 void *lib_handle = os::native_java_library();
446 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
447 if (_to_platform_string_fn == nullptr) {
448 fatal("GetStringPlatformChars missing");
449 }
450 }
451
452 char *native_platform_string;
453 jstring js;
454 { JavaThread* thread = THREAD;
455 js = (jstring) JNIHandles::make_local(thread, java_string());
456 HandleMark hm(thread);
457 ThreadToNativeFromVM ttn(thread);
458 JNIEnv *env = thread->jni_environment();
459 bool is_copy;
460 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
461 assert(is_copy == JNI_TRUE, "is_copy value changed");
462 }
463
464 // Uses a store barrier and therefore needs to be in vm state
465 JNIHandles::destroy_local(js);
466
467 return native_platform_string;
468 }
469
470 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
471 ResourceMark rm(THREAD);
472 return create_from_str(java_name->as_klass_external_name(), THREAD);
473 }
474
475 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
476 jchar* result = as_unicode_string_or_null(java_string, length);
477 if (result == nullptr) {
478 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
479 }
480 return result;
481 }
482
483 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
484 typeArrayOop value = java_lang_String::value(java_string);
485 length = java_lang_String::length(java_string, value);
486 bool is_latin1 = java_lang_String::is_latin1(java_string);
487
488 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
489 if (result != nullptr) {
490 if (!is_latin1) {
491 for (int index = 0; index < length; index++) {
492 result[index] = value->char_at(index);
493 }
494 } else {
495 for (int index = 0; index < length; index++) {
496 result[index] = ((jchar) value->byte_at(index)) & 0xff;
497 }
498 }
499 }
500 return result;
501 }
502
503 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
504 // The hash and hashIsZero fields are subject to a benign data race,
505 // making it crucial to ensure that any observable result of the
506 // calculation in this method stays correct under any possible read of
507 // these fields. Necessary restrictions to allow this to be correct
508 // without explicit memory fences or similar concurrency primitives is
509 // that we can ever only write to one of these two fields for a given
510 // String instance, and that the computation is idempotent and derived
511 // from immutable state
512 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
513 if (java_lang_String::hash_is_set(java_string)) {
514 return java_string->int_field(_hash_offset);
515 }
516
517 typeArrayOop value = java_lang_String::value(java_string);
518 int length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 unsigned int hash = 0;
522 if (length > 0) {
523 if (is_latin1) {
524 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
525 } else {
526 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
527 }
528 }
529
530 if (update) {
531 if (hash != 0) {
532 java_string->int_field_put(_hash_offset, hash);
533 } else {
534 java_string->bool_field_put(_hashIsZero_offset, true);
535 }
536 }
537 return hash;
538 }
539
540 unsigned int java_lang_String::hash_code(oop java_string) {
541 return hash_code_impl(java_string, /*update=*/true);
542 }
543
544 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
545 return hash_code_impl(java_string, /*update=*/false);
546 }
547
548
549 char* java_lang_String::as_quoted_ascii(oop java_string) {
550 typeArrayOop value = java_lang_String::value(java_string);
551 int length = java_lang_String::length(java_string, value);
552 bool is_latin1 = java_lang_String::is_latin1(java_string);
553
554 if (length == 0) return nullptr;
555
556 char* result;
557 int result_length;
558 if (!is_latin1) {
559 jchar* base = value->char_at_addr(0);
560 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
561 result = NEW_RESOURCE_ARRAY(char, result_length);
562 UNICODE::as_quoted_ascii(base, length, result, result_length);
563 } else {
564 jbyte* base = value->byte_at_addr(0);
565 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
566 result = NEW_RESOURCE_ARRAY(char, result_length);
567 UNICODE::as_quoted_ascii(base, length, result, result_length);
568 }
569 assert(result_length >= length + 1, "must not be shorter");
570 assert(result_length == (int)strlen(result) + 1, "must match");
571 return result;
572 }
573
574 Symbol* java_lang_String::as_symbol(oop java_string) {
575 typeArrayOop value = java_lang_String::value(java_string);
576 int length = java_lang_String::length(java_string, value);
577 bool is_latin1 = java_lang_String::is_latin1(java_string);
578 if (!is_latin1) {
579 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
580 Symbol* sym = SymbolTable::new_symbol(base, length);
581 return sym;
582 } else {
583 ResourceMark rm;
584 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
585 const char* base = UNICODE::as_utf8(position, length);
586 Symbol* sym = SymbolTable::new_symbol(base, length);
587 return sym;
588 }
589 }
590
591 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
592 typeArrayOop value = java_lang_String::value(java_string);
593 int length = java_lang_String::length(java_string, value);
594 bool is_latin1 = java_lang_String::is_latin1(java_string);
595 if (!is_latin1) {
596 jchar* base = (length == 0) ? nullptr : value->char_at_addr(0);
597 return SymbolTable::probe_unicode(base, length);
598 } else {
599 ResourceMark rm;
600 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
601 const char* base = UNICODE::as_utf8(position, length);
602 return SymbolTable::probe(base, length);
603 }
604 }
605
606 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
607 assert(value_equals(value, java_lang_String::value(java_string)),
608 "value must be same as java_lang_String::value(java_string)");
609 int length = java_lang_String::length(java_string, value);
610 if (length == 0) {
611 return 0;
612 }
613 if (!java_lang_String::is_latin1(java_string)) {
614 return UNICODE::utf8_length(value->char_at_addr(0), length);
615 } else {
616 return UNICODE::utf8_length(value->byte_at_addr(0), length);
617 }
618 }
619
620 int java_lang_String::utf8_length(oop java_string) {
621 typeArrayOop value = java_lang_String::value(java_string);
622 return utf8_length(java_string, value);
623 }
624
625 char* java_lang_String::as_utf8_string(oop java_string) {
626 int length;
627 return as_utf8_string(java_string, length);
628 }
629
630 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
631 typeArrayOop value = java_lang_String::value(java_string);
632 length = java_lang_String::length(java_string, value);
633 bool is_latin1 = java_lang_String::is_latin1(java_string);
634 if (!is_latin1) {
635 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
636 return UNICODE::as_utf8(position, length);
637 } else {
638 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
639 return UNICODE::as_utf8(position, length);
640 }
641 }
642
643 // Uses a provided buffer if it's sufficiently large, otherwise allocates
644 // a resource array to fit
645 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
646 typeArrayOop value = java_lang_String::value(java_string);
647 int len = java_lang_String::length(java_string, value);
648 bool is_latin1 = java_lang_String::is_latin1(java_string);
649 if (!is_latin1) {
650 jchar *position = (len == 0) ? nullptr : value->char_at_addr(0);
651 utf8_len = UNICODE::utf8_length(position, len);
652 if (utf8_len >= buflen) {
653 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
654 }
655 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
656 } else {
657 jbyte *position = (len == 0) ? nullptr : value->byte_at_addr(0);
658 utf8_len = UNICODE::utf8_length(position, len);
659 if (utf8_len >= buflen) {
660 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
661 }
662 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
663 }
664 }
665
666 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
667 assert(value_equals(value, java_lang_String::value(java_string)),
668 "value must be same as java_lang_String::value(java_string)");
669 int length = java_lang_String::length(java_string, value);
670 bool is_latin1 = java_lang_String::is_latin1(java_string);
671 if (!is_latin1) {
672 jchar* position = (length == 0) ? nullptr : value->char_at_addr(0);
673 return UNICODE::as_utf8(position, length, buf, buflen);
674 } else {
675 jbyte* position = (length == 0) ? nullptr : value->byte_at_addr(0);
676 return UNICODE::as_utf8(position, length, buf, buflen);
677 }
678 }
679
680 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
681 typeArrayOop value = java_lang_String::value(java_string);
682 return as_utf8_string(java_string, value, buf, buflen);
683 }
684
685 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
686 typeArrayOop value = java_lang_String::value(java_string);
687 bool is_latin1 = java_lang_String::is_latin1(java_string);
688 assert(start + len <= java_lang_String::length(java_string), "just checking");
689 if (!is_latin1) {
690 jchar* position = value->char_at_addr(start);
691 return UNICODE::as_utf8(position, len);
692 } else {
693 jbyte* position = value->byte_at_addr(start);
694 return UNICODE::as_utf8(position, len);
695 }
696 }
697
698 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
699 assert(value_equals(value, java_lang_String::value(java_string)),
700 "value must be same as java_lang_String::value(java_string)");
701 assert(start + len <= java_lang_String::length(java_string), "just checking");
702 bool is_latin1 = java_lang_String::is_latin1(java_string);
703 if (!is_latin1) {
704 jchar* position = value->char_at_addr(start);
705 return UNICODE::as_utf8(position, len, buf, buflen);
706 } else {
707 jbyte* position = value->byte_at_addr(start);
708 return UNICODE::as_utf8(position, len, buf, buflen);
709 }
710 }
711
712 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
713 assert(java_string->klass() == vmClasses::String_klass(),
714 "must be java_string");
715 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
716 int length = java_lang_String::length(java_string, value);
717 if (length != len) {
718 return false;
719 }
720 bool is_latin1 = java_lang_String::is_latin1(java_string);
721 if (!is_latin1) {
722 for (int i = 0; i < len; i++) {
723 if (value->char_at(i) != chars[i]) {
724 return false;
725 }
726 }
727 } else {
728 for (int i = 0; i < len; i++) {
729 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
730 return false;
731 }
732 }
733 }
734 return true;
735 }
736
737 bool java_lang_String::equals(oop str1, oop str2) {
738 assert(str1->klass() == vmClasses::String_klass(),
739 "must be java String");
740 assert(str2->klass() == vmClasses::String_klass(),
741 "must be java String");
742 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
743 bool is_latin1 = java_lang_String::is_latin1(str1);
744 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
745 bool is_latin2 = java_lang_String::is_latin1(str2);
746
747 if (is_latin1 != is_latin2) {
748 // Strings with different coders are never equal.
749 return false;
750 }
751 return value_equals(value1, value2);
752 }
753
754 void java_lang_String::print(oop java_string, outputStream* st) {
755 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
756 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
757
758 if (value == nullptr) {
759 // This can happen if, e.g., printing a String
760 // object before its initializer has been called
761 st->print("nullptr");
762 return;
763 }
764
765 int length = java_lang_String::length(java_string, value);
766 bool is_latin1 = java_lang_String::is_latin1(java_string);
767
768 st->print("\"");
769 for (int index = 0; index < length; index++) {
770 jchar c = (!is_latin1) ? value->char_at(index) :
771 ((jchar) value->byte_at(index)) & 0xff;
772 if (c < ' ') {
773 st->print("\\x%02X", c); // print control characters e.g. \x0A
774 } else {
775 st->print("%c", c);
776 }
777 }
778 st->print("\"");
779 }
780
781 // java_lang_Class
782
783 int java_lang_Class::_klass_offset;
784 int java_lang_Class::_array_klass_offset;
785 int java_lang_Class::_oop_size_offset;
786 int java_lang_Class::_static_oop_field_count_offset;
787 int java_lang_Class::_class_loader_offset;
788 int java_lang_Class::_module_offset;
789 int java_lang_Class::_protection_domain_offset;
790 int java_lang_Class::_component_mirror_offset;
791 int java_lang_Class::_init_lock_offset;
792 int java_lang_Class::_signers_offset;
793 int java_lang_Class::_name_offset;
794 int java_lang_Class::_source_file_offset;
795 int java_lang_Class::_classData_offset;
796 int java_lang_Class::_classRedefinedCount_offset;
797 int java_lang_Class::_reflectionData_offset;
798
799 bool java_lang_Class::_offsets_computed = false;
800 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
801 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
802
803 #ifdef ASSERT
804 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
805 assert(fd->has_initial_value(), "caller should have checked this");
806 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
807 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
808 }
809 #endif
810
811 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
812 DEBUG_ONLY(assert_valid_static_string_field(fd);)
813 oop string = fd->string_initial_value(CHECK);
814 mirror()->obj_field_put(fd->offset(), string);
815 }
816
817 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
818 assert(fd->has_initial_value(), "caller should have checked this");
819 BasicType t = fd->field_type();
820 switch (t) {
821 case T_BYTE:
822 mirror()->byte_field_put(fd->offset(), (jbyte)(fd->int_initial_value()));
823 break;
824 case T_BOOLEAN:
825 mirror()->bool_field_put(fd->offset(), (jboolean)(fd->int_initial_value()));
826 break;
827 case T_CHAR:
828 mirror()->char_field_put(fd->offset(), (jchar)(fd->int_initial_value()));
829 break;
830 case T_SHORT:
831 mirror()->short_field_put(fd->offset(), (jshort)(fd->int_initial_value()));
832 break;
833 case T_INT:
834 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
835 break;
836 case T_FLOAT:
837 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
838 break;
839 case T_DOUBLE:
840 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
841 break;
842 case T_LONG:
843 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
844 break;
845 default:
846 // Illegal ConstantValue attribute in class file should have been
847 // caught during classfile parsing.
848 ShouldNotReachHere();
849 }
850 }
851
852 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
853 assert(mirror.not_null() && fd->is_static(), "just checking");
854 if (fd->has_initial_value()) {
855 if (fd->field_type() != T_OBJECT) {
856 initialize_static_primitive_field(fd, mirror);
857 } else {
858 initialize_static_string_field(fd, mirror, CHECK);
859 }
860 }
861 }
862
863 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
864 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
865
866 // If the offset was read from the shared archive, it was fixed up already
867 if (!k->is_shared()) {
868 if (k->is_instance_klass()) {
869 // During bootstrap, java.lang.Class wasn't loaded so static field
870 // offsets were computed without the size added it. Go back and
871 // update all the static field offsets to included the size.
872
873 // Unfortunately, the FieldInfo stream is encoded with UNSIGNED5 which doesn't allow
874 // content updates. So the FieldInfo stream has to be decompressed into a temporary array,
875 // static fields offsets are updated in this array before reencoding everything into
876 // a new UNSIGNED5 stream, and substitute it to the old FieldInfo stream.
877
878 int java_fields;
879 int injected_fields;
880 InstanceKlass* ik = InstanceKlass::cast(k);
881 GrowableArray<FieldInfo>* fields =
882 FieldInfoStream::create_FieldInfoArray(ik->fieldinfo_stream(),
883 &java_fields, &injected_fields);
884 for (int i = 0; i < fields->length(); i++) {
885 FieldInfo* fi = fields->adr_at(i);
886 if (fi->access_flags().is_static()) {
887 fi->set_offset(fi->offset() + InstanceMirrorKlass::offset_of_static_fields());
888 }
889 }
890 Array<u1>* old_stream = ik->fieldinfo_stream();
891 assert(fields->length() == (java_fields + injected_fields), "Must be");
892 Array<u1>* new_fis = FieldInfoStream::create_FieldInfoStream(fields, java_fields, injected_fields, k->class_loader_data(), CHECK);
893 ik->set_fieldinfo_stream(new_fis);
894 MetadataFactory::free_array<u1>(k->class_loader_data(), old_stream);
895 }
896 }
897
898 if (k->is_shared() && k->has_archived_mirror_index()) {
899 if (ArchiveHeapLoader::is_in_use()) {
900 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
901 assert(present, "Missing archived mirror for %s", k->external_name());
902 return;
903 } else {
904 k->clear_java_mirror_handle();
905 k->clear_archived_mirror_index();
906 }
907 }
908 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
909 }
910
911 void java_lang_Class::initialize_mirror_fields(Klass* k,
912 Handle mirror,
913 Handle protection_domain,
914 Handle classData,
915 TRAPS) {
916 // Allocate a simple java object for a lock.
917 // This needs to be a java object because during class initialization
918 // it can be held across a java call.
919 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
920 set_init_lock(mirror(), r);
921
922 // Set protection domain also
923 set_protection_domain(mirror(), protection_domain());
924
925 // Initialize static fields
926 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
927
928 // Set classData
929 set_class_data(mirror(), classData());
930 }
931
932 // Set the java.lang.Module module field in the java_lang_Class mirror
933 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
934 if (module.is_null()) {
935 // During startup, the module may be null only if java.base has not been defined yet.
936 // Put the class on the fixup_module_list to patch later when the java.lang.Module
937 // for java.base is known. But note that since we captured the null module another
938 // thread may have completed that initialization.
939
940 bool javabase_was_defined = false;
941 {
942 MutexLocker m1(current, Module_lock);
943 // Keep list of classes needing java.base module fixup
944 if (!ModuleEntryTable::javabase_defined()) {
945 assert(k->java_mirror() != nullptr, "Class's mirror is null");
946 k->class_loader_data()->inc_keep_alive();
947 assert(fixup_module_field_list() != nullptr, "fixup_module_field_list not initialized");
948 fixup_module_field_list()->push(k);
949 } else {
950 javabase_was_defined = true;
951 }
952 }
953
954 // If java.base was already defined then patch this particular class with java.base.
955 if (javabase_was_defined) {
956 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
957 assert(javabase_entry != nullptr && javabase_entry->module() != nullptr,
958 "Setting class module field, " JAVA_BASE_NAME " should be defined");
959 Handle javabase_handle(current, javabase_entry->module());
960 set_module(mirror(), javabase_handle());
961 }
962 } else {
963 assert(Universe::is_module_initialized() ||
964 (ModuleEntryTable::javabase_defined() &&
965 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
966 "Incorrect java.lang.Module specification while creating mirror");
967 set_module(mirror(), module());
968 }
969 }
970
971 // Statically allocate fixup lists because they always get created.
972 void java_lang_Class::allocate_fixup_lists() {
973 GrowableArray<Klass*>* mirror_list =
974 new (mtClass) GrowableArray<Klass*>(40, mtClass);
975 set_fixup_mirror_list(mirror_list);
976
977 GrowableArray<Klass*>* module_list =
978 new (mtModule) GrowableArray<Klass*>(500, mtModule);
979 set_fixup_module_field_list(module_list);
980 }
981
982 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
983 Handle& mirror, Handle& comp_mirror, TRAPS) {
984 // Allocate mirror (java.lang.Class instance)
985 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
986 mirror = Handle(THREAD, mirror_oop);
987
988 // Setup indirection from mirror->klass
989 set_klass(mirror(), k);
990
991 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
992 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
993
994 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
995
996 // It might also have a component mirror. This mirror must already exist.
997 if (k->is_array_klass()) {
998 if (k->is_typeArray_klass()) {
999 BasicType type = TypeArrayKlass::cast(k)->element_type();
1000 if (is_scratch) {
1001 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1002 } else {
1003 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1004 }
1005 } else {
1006 assert(k->is_objArray_klass(), "Must be");
1007 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1008 assert(element_klass != nullptr, "Must have an element klass");
1009 if (is_scratch) {
1010 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1011 } else {
1012 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1013 }
1014 }
1015 assert(comp_mirror() != nullptr, "must have a mirror");
1016
1017 // Two-way link between the array klass and its component mirror:
1018 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1019 set_component_mirror(mirror(), comp_mirror());
1020 // See below for ordering dependencies between field array_klass in component mirror
1021 // and java_mirror in this klass.
1022 } else {
1023 assert(k->is_instance_klass(), "Must be");
1024
1025 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1026 if (HAS_PENDING_EXCEPTION) {
1027 // If any of the fields throws an exception like OOM remove the klass field
1028 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1029 // This mirror looks like a primitive type, which logically it is because it
1030 // it represents no class.
1031 set_klass(mirror(), nullptr);
1032 return;
1033 }
1034 }
1035 }
1036
1037 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1038 Handle module, Handle protection_domain,
1039 Handle classData, TRAPS) {
1040 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1041 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1042
1043 // Use this moment of initialization to cache modifier_flags also,
1044 // to support Class.getModifiers(). Instance classes recalculate
1045 // the cached flags after the class file is parsed, but before the
1046 // class is put into the system dictionary.
1047 int computed_modifiers = k->compute_modifier_flags();
1048 k->set_modifier_flags(computed_modifiers);
1049 // Class_klass has to be loaded because it is used to allocate
1050 // the mirror.
1051 if (vmClasses::Class_klass_loaded()) {
1052 Handle mirror;
1053 Handle comp_mirror;
1054
1055 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1056
1057 // set the classLoader field in the java_lang_Class instance
1058 assert(class_loader() == k->class_loader(), "should be same");
1059 set_class_loader(mirror(), class_loader());
1060
1061 // Setup indirection from klass->mirror
1062 // after any exceptions can happen during allocations.
1063 k->set_java_mirror(mirror);
1064
1065 // Set the module field in the java_lang_Class instance. This must be done
1066 // after the mirror is set.
1067 set_mirror_module_field(THREAD, k, mirror, module);
1068
1069 if (comp_mirror() != nullptr) {
1070 // Set after k->java_mirror() is published, because compiled code running
1071 // concurrently doesn't expect a k to have a null java_mirror.
1072 release_set_array_klass(comp_mirror(), k);
1073 }
1074 if (CDSConfig::is_dumping_heap()) {
1075 if (CDSConfig::is_dumping_protection_domains()) {
1076 create_scratch_mirror(k, protection_domain, CHECK);
1077 } else {
1078 create_scratch_mirror(k, Handle() /* null protection_domain*/, CHECK);
1079 }
1080 }
1081 } else {
1082 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1083 fixup_mirror_list()->push(k);
1084 }
1085 }
1086
1087 #if INCLUDE_CDS_JAVA_HEAP
1088 // The "scratch mirror" stores the states of the mirror object that can be
1089 // decided at dump time (such as the initial values of the static fields, the
1090 // component mirror, etc). At runtime, more information is added to it by
1091 // java_lang_Class::restore_archived_mirror().
1092 //
1093 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1094 // produces the same result as /*runtime*/create_mirror().
1095 //
1096 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1097 // latter may contain dumptime-specific information that cannot be archived
1098 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1099 void java_lang_Class::create_scratch_mirror(Klass* k, Handle protection_domain, TRAPS) {
1100 if (k->class_loader() != nullptr &&
1101 k->class_loader() != SystemDictionary::java_platform_loader() &&
1102 k->class_loader() != SystemDictionary::java_system_loader()) {
1103 // We only archive the mirrors of classes loaded by the built-in loaders
1104 return;
1105 }
1106
1107 Handle classData; // set to null. Will be reinitialized at runtime
1108 Handle mirror;
1109 Handle comp_mirror;
1110 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1111
1112 if (comp_mirror() != nullptr) {
1113 release_set_array_klass(comp_mirror(), k);
1114 }
1115
1116 HeapShared::set_scratch_java_mirror(k, mirror());
1117 }
1118
1119 // Returns true if the mirror is updated, false if no archived mirror
1120 // data is present. After the archived mirror object is restored, the
1121 // shared klass' _has_raw_archived_mirror flag is cleared.
1122 bool java_lang_Class::restore_archived_mirror(Klass *k,
1123 Handle class_loader, Handle module,
1124 Handle protection_domain, TRAPS) {
1125 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1126 // see more details in vmClasses::resolve_all().
1127 if (!vmClasses::Class_klass_loaded()) {
1128 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1129 fixup_mirror_list()->push(k);
1130 return true;
1131 }
1132
1133 oop m = k->archived_java_mirror();
1134 assert(m != nullptr, "must have stored non-null archived mirror");
1135
1136 // Sanity: clear it now to prevent re-initialization if any of the following fails
1137 k->clear_archived_mirror_index();
1138
1139 // mirror is archived, restore
1140 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1141 assert(as_Klass(m) == k, "must be");
1142 Handle mirror(THREAD, m);
1143
1144 if (!k->is_array_klass()) {
1145 // - local static final fields with initial values were initialized at dump time
1146
1147 // create the init_lock
1148 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1149 set_init_lock(mirror(), r);
1150
1151 if (protection_domain.not_null()) {
1152 set_protection_domain(mirror(), protection_domain());
1153 }
1154 }
1155
1156 assert(class_loader() == k->class_loader(), "should be same");
1157 if (class_loader.not_null()) {
1158 set_class_loader(mirror(), class_loader());
1159 }
1160
1161 k->set_java_mirror(mirror);
1162
1163 set_mirror_module_field(THREAD, k, mirror, module);
1164
1165 if (log_is_enabled(Trace, cds, heap, mirror)) {
1166 ResourceMark rm(THREAD);
1167 log_trace(cds, heap, mirror)(
1168 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1169 }
1170
1171 return true;
1172 }
1173 #endif // INCLUDE_CDS_JAVA_HEAP
1174
1175 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1176 assert(_module_offset != 0, "must have been computed already");
1177 set_module(k->java_mirror(), module());
1178 }
1179
1180 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1181 assert(_oop_size_offset != 0, "must be set");
1182 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1183 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1184 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1185 }
1186
1187 int java_lang_Class::static_oop_field_count(oop java_class) {
1188 assert(_static_oop_field_count_offset != 0, "must be set");
1189 return java_class->int_field(_static_oop_field_count_offset);
1190 }
1191
1192 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1193 assert(_static_oop_field_count_offset != 0, "must be set");
1194 java_class->int_field_put(_static_oop_field_count_offset, size);
1195 }
1196
1197 oop java_lang_Class::protection_domain(oop java_class) {
1198 assert(_protection_domain_offset != 0, "must be set");
1199 return java_class->obj_field(_protection_domain_offset);
1200 }
1201 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1202 assert(_protection_domain_offset != 0, "must be set");
1203 java_class->obj_field_put(_protection_domain_offset, pd);
1204 }
1205
1206 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1207 assert(_component_mirror_offset != 0, "must be set");
1208 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1209 }
1210 oop java_lang_Class::component_mirror(oop java_class) {
1211 assert(_component_mirror_offset != 0, "must be set");
1212 return java_class->obj_field(_component_mirror_offset);
1213 }
1214
1215 oop java_lang_Class::init_lock(oop java_class) {
1216 assert(_init_lock_offset != 0, "must be set");
1217 return java_class->obj_field(_init_lock_offset);
1218 }
1219 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1220 assert(_init_lock_offset != 0, "must be set");
1221 java_class->obj_field_put(_init_lock_offset, init_lock);
1222 }
1223
1224 objArrayOop java_lang_Class::signers(oop java_class) {
1225 assert(_signers_offset != 0, "must be set");
1226 return (objArrayOop)java_class->obj_field(_signers_offset);
1227 }
1228 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1229 assert(_signers_offset != 0, "must be set");
1230 java_class->obj_field_put(_signers_offset, signers);
1231 }
1232
1233 oop java_lang_Class::class_data(oop java_class) {
1234 assert(_classData_offset != 0, "must be set");
1235 return java_class->obj_field(_classData_offset);
1236 }
1237 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1238 assert(_classData_offset != 0, "must be set");
1239 java_class->obj_field_put(_classData_offset, class_data);
1240 }
1241
1242 oop java_lang_Class::reflection_data(oop java_class) {
1243 assert(_reflectionData_offset != 0, "must be set");
1244 return java_class->obj_field(_reflectionData_offset);
1245 }
1246
1247 bool java_lang_Class::has_reflection_data(oop java_class) {
1248 return (java_lang_Class::reflection_data(java_class) != nullptr);
1249 }
1250
1251 void java_lang_Class::set_reflection_data(oop java_class, oop reflection_data) {
1252 assert(_reflectionData_offset != 0, "must be set");
1253 java_class->obj_field_put(_reflectionData_offset, reflection_data);
1254 }
1255
1256 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1257 assert(_class_loader_offset != 0, "offsets should have been initialized");
1258 java_class->obj_field_put(_class_loader_offset, loader);
1259 }
1260
1261 oop java_lang_Class::class_loader(oop java_class) {
1262 assert(_class_loader_offset != 0, "must be set");
1263 return java_class->obj_field(_class_loader_offset);
1264 }
1265
1266 oop java_lang_Class::module(oop java_class) {
1267 assert(_module_offset != 0, "must be set");
1268 return java_class->obj_field(_module_offset);
1269 }
1270
1271 void java_lang_Class::set_module(oop java_class, oop module) {
1272 assert(_module_offset != 0, "must be set");
1273 java_class->obj_field_put(_module_offset, module);
1274 }
1275
1276 oop java_lang_Class::name(Handle java_class, TRAPS) {
1277 assert(_name_offset != 0, "must be set");
1278 oop o = java_class->obj_field(_name_offset);
1279 if (o == nullptr) {
1280 o = StringTable::intern(as_external_name(java_class()), THREAD);
1281 java_class->obj_field_put(_name_offset, o);
1282 }
1283 return o;
1284 }
1285
1286 oop java_lang_Class::source_file(oop java_class) {
1287 assert(_source_file_offset != 0, "must be set");
1288 return java_class->obj_field(_source_file_offset);
1289 }
1290
1291 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1292 assert(_source_file_offset != 0, "must be set");
1293 java_class->obj_field_put(_source_file_offset, source_file);
1294 }
1295
1296 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1297 // This should be improved by adding a field at the Java level or by
1298 // introducing a new VM klass (see comment in ClassFileParser)
1299 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1300 if (type != T_VOID) {
1301 Klass* aklass = Universe::typeArrayKlass(type);
1302 assert(aklass != nullptr, "correct bootstrap");
1303 release_set_array_klass(java_class, aklass);
1304 }
1305 #ifdef ASSERT
1306 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1307 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1308 #endif
1309 return java_class;
1310 }
1311
1312 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1313 assert(is_instance(java_class), "must be a Class object");
1314 java_class->metadata_field_put(_klass_offset, klass);
1315 }
1316
1317
1318 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1319 assert(is_instance(java_class), "must be a Class object");
1320 Symbol* name = nullptr;
1321 bool is_instance = false;
1322 if (is_primitive(java_class)) {
1323 name = vmSymbols::type_signature(primitive_type(java_class));
1324 } else {
1325 Klass* k = as_Klass(java_class);
1326 is_instance = k->is_instance_klass();
1327 name = k->name();
1328 }
1329 if (name == nullptr) {
1330 st->print("<null>");
1331 return;
1332 }
1333 if (is_instance) st->print("L");
1334 st->write((char*) name->base(), (int) name->utf8_length());
1335 if (is_instance) st->print(";");
1336 }
1337
1338 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1339 assert(is_instance(java_class), "must be a Class object");
1340 Symbol* name;
1341 if (is_primitive(java_class)) {
1342 name = vmSymbols::type_signature(primitive_type(java_class));
1343 // Because this can create a new symbol, the caller has to decrement
1344 // the refcount, so make adjustment here and below for symbols returned
1345 // that are not created or incremented due to a successful lookup.
1346 name->increment_refcount();
1347 } else {
1348 Klass* k = as_Klass(java_class);
1349 if (!k->is_instance_klass()) {
1350 name = k->name();
1351 name->increment_refcount();
1352 } else {
1353 ResourceMark rm;
1354 const char* sigstr = k->signature_name();
1355 int siglen = (int) strlen(sigstr);
1356 if (!intern_if_not_found) {
1357 name = SymbolTable::probe(sigstr, siglen);
1358 } else {
1359 name = SymbolTable::new_symbol(sigstr, siglen);
1360 }
1361 }
1362 }
1363 return name;
1364 }
1365
1366 // Returns the Java name for this Java mirror (Resource allocated)
1367 // See Klass::external_name().
1368 // For primitive type Java mirrors, its type name is returned.
1369 const char* java_lang_Class::as_external_name(oop java_class) {
1370 assert(is_instance(java_class), "must be a Class object");
1371 const char* name = nullptr;
1372 if (is_primitive(java_class)) {
1373 name = type2name(primitive_type(java_class));
1374 } else {
1375 name = as_Klass(java_class)->external_name();
1376 }
1377 if (name == nullptr) {
1378 name = "<null>";
1379 }
1380 return name;
1381 }
1382
1383 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1384 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1385 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1386 return k;
1387 }
1388
1389
1390 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1391 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1392 java_class->release_metadata_field_put(_array_klass_offset, klass);
1393 }
1394
1395
1396 BasicType java_lang_Class::primitive_type(oop java_class) {
1397 assert(is_primitive(java_class), "just checking");
1398 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1399 BasicType type = T_VOID;
1400 if (ak != nullptr) {
1401 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1402 type = ArrayKlass::cast(ak)->element_type();
1403 } else {
1404 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1405 }
1406 #ifdef ASSERT
1407 if (CDSConfig::is_dumping_heap()) {
1408 oop mirror = Universe::java_mirror(type);
1409 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1410 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1411 } else {
1412 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1413 }
1414 #endif
1415 return type;
1416 }
1417
1418 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1419 assert(is_instance(java_class), "must be a Class object");
1420 if (is_primitive(java_class)) {
1421 if (reference_klass != nullptr)
1422 (*reference_klass) = nullptr;
1423 return primitive_type(java_class);
1424 } else {
1425 if (reference_klass != nullptr)
1426 (*reference_klass) = as_Klass(java_class);
1427 return T_OBJECT;
1428 }
1429 }
1430
1431
1432 oop java_lang_Class::primitive_mirror(BasicType t) {
1433 oop mirror = Universe::java_mirror(t);
1434 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1435 assert(is_primitive(mirror), "must be primitive");
1436 return mirror;
1437 }
1438
1439 #define CLASS_FIELDS_DO(macro) \
1440 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1441 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1442 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1443 macro(_module_offset, k, "module", module_signature, false); \
1444 macro(_name_offset, k, "name", string_signature, false); \
1445 macro(_classData_offset, k, "classData", object_signature, false); \
1446 macro(_reflectionData_offset, k, "reflectionData", class_ReflectionData_signature, false); \
1447
1448 void java_lang_Class::compute_offsets() {
1449 if (_offsets_computed) {
1450 return;
1451 }
1452
1453 _offsets_computed = true;
1454
1455 InstanceKlass* k = vmClasses::Class_klass();
1456 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1457
1458 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1459 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1460 // GC treats them the same.
1461 _init_lock_offset = _component_mirror_offset;
1462
1463 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1464 }
1465
1466 #if INCLUDE_CDS
1467 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1468 f->do_bool(&_offsets_computed);
1469 f->do_u4((u4*)&_init_lock_offset);
1470
1471 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1472
1473 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1474 }
1475 #endif
1476
1477 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1478 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1479 return the_class_mirror->int_field(_classRedefinedCount_offset);
1480 }
1481
1482 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1483 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1484 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1485 }
1486
1487
1488 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1489 // platform thread structure, and a eetop offset which was used for thread
1490 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1491 // merged, so in the HotSpot VM we just use the eetop field for the thread
1492 // instead of the privateInfo_offset.
1493 //
1494 // Note: The stackSize field is only present starting in 1.4.
1495
1496 int java_lang_Thread_FieldHolder::_group_offset;
1497 int java_lang_Thread_FieldHolder::_priority_offset;
1498 int java_lang_Thread_FieldHolder::_stackSize_offset;
1499 int java_lang_Thread_FieldHolder::_daemon_offset;
1500 int java_lang_Thread_FieldHolder::_thread_status_offset;
1501
1502 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1503 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1504 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1505 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1506 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1507 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1508
1509 void java_lang_Thread_FieldHolder::compute_offsets() {
1510 assert(_group_offset == 0, "offsets should be initialized only once");
1511
1512 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1513 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1514 }
1515
1516 #if INCLUDE_CDS
1517 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1518 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1519 }
1520 #endif
1521
1522 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1523 return holder->obj_field(_group_offset);
1524 }
1525
1526 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1527 return (ThreadPriority)holder->int_field(_priority_offset);
1528 }
1529
1530 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1531 holder->int_field_put(_priority_offset, priority);
1532 }
1533
1534 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1535 return holder->long_field(_stackSize_offset);
1536 }
1537
1538 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1539 return holder->bool_field(_daemon_offset) != 0;
1540 }
1541
1542 void java_lang_Thread_FieldHolder::set_daemon(oop holder, bool val) {
1543 assert(val, "daemon status is never turned off");
1544 holder->bool_field_put(_daemon_offset, val);
1545 }
1546
1547 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1548 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1549 }
1550
1551 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1552 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1553 }
1554
1555
1556 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1557
1558 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1559 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true);
1560
1561 void java_lang_Thread_Constants::compute_offsets() {
1562 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1563
1564 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1565 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1566 }
1567
1568 #if INCLUDE_CDS
1569 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1570 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1571 }
1572 #endif
1573
1574 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1575 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1576 oop base = k->static_field_base_raw();
1577 return base->obj_field(_static_VTHREAD_GROUP_offset);
1578 }
1579
1580
1581 int java_lang_Thread::_holder_offset;
1582 int java_lang_Thread::_name_offset;
1583 int java_lang_Thread::_contextClassLoader_offset;
1584 int java_lang_Thread::_inheritedAccessControlContext_offset;
1585 int java_lang_Thread::_eetop_offset;
1586 int java_lang_Thread::_jvmti_thread_state_offset;
1587 int java_lang_Thread::_jvmti_VTMS_transition_disable_count_offset;
1588 int java_lang_Thread::_jvmti_is_in_VTMS_transition_offset;
1589 int java_lang_Thread::_interrupted_offset;
1590 int java_lang_Thread::_interruptLock_offset;
1591 int java_lang_Thread::_tid_offset;
1592 int java_lang_Thread::_continuation_offset;
1593 int java_lang_Thread::_park_blocker_offset;
1594 int java_lang_Thread::_scopedValueBindings_offset;
1595 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1596
1597 #define THREAD_FIELDS_DO(macro) \
1598 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1599 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1600 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1601 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1602 macro(_eetop_offset, k, "eetop", long_signature, false); \
1603 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1604 macro(_interruptLock_offset, k, "interruptLock", object_signature, false); \
1605 macro(_tid_offset, k, "tid", long_signature, false); \
1606 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1607 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1608 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1609
1610 void java_lang_Thread::compute_offsets() {
1611 assert(_holder_offset == 0, "offsets should be initialized only once");
1612
1613 InstanceKlass* k = vmClasses::Thread_klass();
1614 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1615 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1616 }
1617
1618 #if INCLUDE_CDS
1619 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1620 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1621 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1622 }
1623 #endif
1624
1625 JavaThread* java_lang_Thread::thread(oop java_thread) {
1626 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1627 }
1628
1629 JavaThread* java_lang_Thread::thread_acquire(oop java_thread) {
1630 return reinterpret_cast<JavaThread*>(java_thread->address_field_acquire(_eetop_offset));
1631 }
1632
1633 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1634 java_thread->address_field_put(_eetop_offset, (address)thread);
1635 }
1636
1637 void java_lang_Thread::release_set_thread(oop java_thread, JavaThread* thread) {
1638 java_thread->release_address_field_put(_eetop_offset, (address)thread);
1639 }
1640
1641 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1642 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1643 }
1644
1645 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1646 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1647 }
1648
1649 int java_lang_Thread::VTMS_transition_disable_count(oop java_thread) {
1650 return java_thread->int_field(_jvmti_VTMS_transition_disable_count_offset);
1651 }
1652
1653 void java_lang_Thread::inc_VTMS_transition_disable_count(oop java_thread) {
1654 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1655 int val = VTMS_transition_disable_count(java_thread);
1656 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val + 1);
1657 }
1658
1659 void java_lang_Thread::dec_VTMS_transition_disable_count(oop java_thread) {
1660 assert(JvmtiVTMSTransition_lock->owned_by_self(), "Must be locked");
1661 int val = VTMS_transition_disable_count(java_thread);
1662 assert(val > 0, "VTMS_transition_disable_count should never be negative");
1663 java_thread->int_field_put(_jvmti_VTMS_transition_disable_count_offset, val - 1);
1664 }
1665
1666 bool java_lang_Thread::is_in_VTMS_transition(oop java_thread) {
1667 return java_thread->bool_field_volatile(_jvmti_is_in_VTMS_transition_offset);
1668 }
1669
1670 void java_lang_Thread::set_is_in_VTMS_transition(oop java_thread, bool val) {
1671 java_thread->bool_field_put_volatile(_jvmti_is_in_VTMS_transition_offset, val);
1672 }
1673
1674 int java_lang_Thread::is_in_VTMS_transition_offset() {
1675 return _jvmti_is_in_VTMS_transition_offset;
1676 }
1677
1678 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1679 assert(java_thread != nullptr, "need a java_lang_Thread pointer here");
1680 java_thread->obj_field_put(_scopedValueBindings_offset, nullptr);
1681 }
1682
1683 oop java_lang_Thread::holder(oop java_thread) {
1684 // Note: may return null if the thread is still attaching
1685 return java_thread->obj_field(_holder_offset);
1686 }
1687 oop java_lang_Thread::interrupt_lock(oop java_thread) {
1688 return java_thread->obj_field(_interruptLock_offset);
1689 }
1690
1691 bool java_lang_Thread::interrupted(oop java_thread) {
1692 // Make sure the caller can safely access oops.
1693 assert(Thread::current()->is_VM_thread() ||
1694 (JavaThread::current()->thread_state() != _thread_blocked &&
1695 JavaThread::current()->thread_state() != _thread_in_native),
1696 "Unsafe access to oop");
1697 return java_thread->bool_field_volatile(_interrupted_offset);
1698 }
1699
1700 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1701 // Make sure the caller can safely access oops.
1702 assert(Thread::current()->is_VM_thread() ||
1703 (JavaThread::current()->thread_state() != _thread_blocked &&
1704 JavaThread::current()->thread_state() != _thread_in_native),
1705 "Unsafe access to oop");
1706 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1707 }
1708
1709
1710 oop java_lang_Thread::name(oop java_thread) {
1711 return java_thread->obj_field(_name_offset);
1712 }
1713
1714
1715 void java_lang_Thread::set_name(oop java_thread, oop name) {
1716 java_thread->obj_field_put(_name_offset, name);
1717 }
1718
1719 // Convenience macros for setting and getting Thread fields that
1720 // are actually stored in the FieldHolder object of the thread.
1721 // The FieldHolder can be null whilst a thread is attaching via
1722 // JNI, and when the main thread is attaching.
1723
1724 // The default value should be the default/zero initialized value
1725 // of the field as it would be in java.lang.Thread.FieldHolder.
1726 #define GET_FIELDHOLDER_FIELD(java_thread, field, default_val) \
1727 { \
1728 oop holder = java_lang_Thread::holder(java_thread); \
1729 if (holder != nullptr) \
1730 return java_lang_Thread_FieldHolder::field(holder); \
1731 else \
1732 return default_val; \
1733 }
1734
1735 // We should never be trying to set a field of an attaching thread.
1736 #define SET_FIELDHOLDER_FIELD(java_thread, field, value) \
1737 { \
1738 oop holder = java_lang_Thread::holder(java_thread); \
1739 assert(holder != nullptr, "Thread not fully initialized"); \
1740 java_lang_Thread_FieldHolder::set_##field(holder, value); \
1741 }
1742
1743
1744 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1745 GET_FIELDHOLDER_FIELD(java_thread, priority, (ThreadPriority)0);
1746 }
1747
1748
1749 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1750 SET_FIELDHOLDER_FIELD(java_thread, priority, priority)
1751 }
1752
1753
1754 oop java_lang_Thread::threadGroup(oop java_thread) {
1755 GET_FIELDHOLDER_FIELD(java_thread, threadGroup, nullptr);
1756 }
1757
1758
1759 bool java_lang_Thread::is_alive(oop java_thread) {
1760 JavaThread* thr = java_lang_Thread::thread(java_thread);
1761 return (thr != nullptr);
1762 }
1763
1764
1765 bool java_lang_Thread::is_daemon(oop java_thread) {
1766 GET_FIELDHOLDER_FIELD(java_thread, is_daemon, false);
1767 }
1768
1769
1770 void java_lang_Thread::set_daemon(oop java_thread) {
1771 SET_FIELDHOLDER_FIELD(java_thread, daemon, true);
1772 }
1773
1774 oop java_lang_Thread::context_class_loader(oop java_thread) {
1775 return java_thread->obj_field(_contextClassLoader_offset);
1776 }
1777
1778 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1779 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1780 }
1781
1782
1783 jlong java_lang_Thread::stackSize(oop java_thread) {
1784 GET_FIELDHOLDER_FIELD(java_thread, stackSize, 0);
1785 }
1786
1787 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1788 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1789 SET_FIELDHOLDER_FIELD(java_thread, thread_status, status);
1790 }
1791
1792 // Read thread status value from threadStatus field in java.lang.Thread java class.
1793 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1794 // Make sure the caller is operating on behalf of the VM or is
1795 // running VM code (state == _thread_in_vm).
1796 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1797 JavaThread::current()->thread_state() == _thread_in_vm,
1798 "Java Thread is not running in vm");
1799 GET_FIELDHOLDER_FIELD(java_thread, get_thread_status, JavaThreadStatus::NEW /* not initialized */);
1800 }
1801
1802 ByteSize java_lang_Thread::thread_id_offset() {
1803 return in_ByteSize(_tid_offset);
1804 }
1805
1806 oop java_lang_Thread::park_blocker(oop java_thread) {
1807 return java_thread->obj_field(_park_blocker_offset);
1808 }
1809
1810 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1811 ThreadsListHandle tlh(JavaThread::current());
1812 JavaThread* thread;
1813 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1814 if (is_virtual) {
1815 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1816 if (carrier_thread == nullptr) {
1817 return nullptr;
1818 }
1819 thread = java_lang_Thread::thread(carrier_thread);
1820 } else {
1821 thread = java_lang_Thread::thread(java_thread);
1822 }
1823 if (thread == nullptr) {
1824 return nullptr;
1825 }
1826
1827 class GetStackTraceClosure : public HandshakeClosure {
1828 public:
1829 const Handle _java_thread;
1830 int _depth;
1831 bool _retry_handshake;
1832 GrowableArray<Method*>* _methods;
1833 GrowableArray<int>* _bcis;
1834
1835 GetStackTraceClosure(Handle java_thread) :
1836 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1837 _methods(nullptr), _bcis(nullptr) {
1838 }
1839 ~GetStackTraceClosure() {
1840 delete _methods;
1841 delete _bcis;
1842 }
1843
1844 bool read_reset_retry() {
1845 bool ret = _retry_handshake;
1846 // If we re-execute the handshake this method need to return false
1847 // when the handshake cannot be performed. (E.g. thread terminating)
1848 _retry_handshake = false;
1849 return ret;
1850 }
1851
1852 void do_thread(Thread* th) {
1853 if (!Thread::current()->is_Java_thread()) {
1854 _retry_handshake = true;
1855 return;
1856 }
1857
1858 JavaThread* thread = JavaThread::cast(th);
1859
1860 if (!thread->has_last_Java_frame()) {
1861 return;
1862 }
1863
1864 bool carrier = false;
1865 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1866 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1867 const ContinuationEntry* ce = thread->vthread_continuation();
1868 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1869 return; // not mounted
1870 }
1871 } else {
1872 carrier = (thread->vthread_continuation() != nullptr);
1873 }
1874
1875 const int max_depth = MaxJavaStackTraceDepth;
1876 const bool skip_hidden = !ShowHiddenFrames;
1877
1878 // Pick minimum length that will cover most cases
1879 int init_length = 64;
1880 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
1881 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
1882
1883 int total_count = 0;
1884 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
1885 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
1886 vfst.next()) {
1887
1888 if (skip_hidden && (vfst.method()->is_hidden() ||
1889 vfst.method()->is_continuation_enter_intrinsic())) {
1890 continue;
1891 }
1892
1893 _methods->push(vfst.method());
1894 _bcis->push(vfst.bci());
1895 total_count++;
1896 }
1897
1898 _depth = total_count;
1899 }
1900 };
1901
1902 // Handshake with target
1903 ResourceMark rm(THREAD);
1904 HandleMark hm(THREAD);
1905 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
1906 do {
1907 Handshake::execute(&gstc, &tlh, thread);
1908 } while (gstc.read_reset_retry());
1909
1910 // Stop if no stack trace is found.
1911 if (gstc._depth == 0) {
1912 return nullptr;
1913 }
1914
1915 // Convert to StackTraceElement array
1916 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1917 assert(k != nullptr, "must be loaded in 1.4+");
1918 if (k->should_be_initialized()) {
1919 k->initialize(CHECK_NULL);
1920 }
1921 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
1922
1923 for (int i = 0; i < gstc._depth; i++) {
1924 methodHandle method(THREAD, gstc._methods->at(i));
1925 oop element = java_lang_StackTraceElement::create(method,
1926 gstc._bcis->at(i),
1927 CHECK_NULL);
1928 trace->obj_at_put(i, element);
1929 }
1930
1931 return trace();
1932 }
1933
1934 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1935 JavaThreadStatus status = get_thread_status(java_thread);
1936 switch (status) {
1937 case JavaThreadStatus::NEW : return "NEW";
1938 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1939 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1940 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1941 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1942 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1943 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1944 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1945 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1946 default : return "UNKNOWN";
1947 };
1948 }
1949 int java_lang_ThreadGroup::_parent_offset;
1950 int java_lang_ThreadGroup::_name_offset;
1951 int java_lang_ThreadGroup::_maxPriority_offset;
1952 int java_lang_ThreadGroup::_daemon_offset;
1953
1954 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1955 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1956 return java_thread_group->obj_field(_parent_offset);
1957 }
1958
1959 // ("name as oop" accessor is not necessary)
1960
1961 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1962 oop name = java_thread_group->obj_field(_name_offset);
1963 // ThreadGroup.name can be null
1964 if (name != nullptr) {
1965 return java_lang_String::as_utf8_string(name);
1966 }
1967 return nullptr;
1968 }
1969
1970 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1971 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1972 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1973 }
1974
1975 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1976 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1977 return java_thread_group->bool_field(_daemon_offset) != 0;
1978 }
1979
1980 #define THREADGROUP_FIELDS_DO(macro) \
1981 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1982 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1983 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1984 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
1985
1986 void java_lang_ThreadGroup::compute_offsets() {
1987 assert(_parent_offset == 0, "offsets should be initialized only once");
1988
1989 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1990 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1991 }
1992
1993 #if INCLUDE_CDS
1994 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1995 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1996 }
1997 #endif
1998
1999
2000 // java_lang_VirtualThread
2001
2002 int java_lang_VirtualThread::static_vthread_scope_offset;
2003 int java_lang_VirtualThread::_carrierThread_offset;
2004 int java_lang_VirtualThread::_continuation_offset;
2005 int java_lang_VirtualThread::_state_offset;
2006
2007 #define VTHREAD_FIELDS_DO(macro) \
2008 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
2009 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
2010 macro(_continuation_offset, k, "cont", continuation_signature, false); \
2011 macro(_state_offset, k, "state", int_signature, false)
2012
2013
2014 void java_lang_VirtualThread::compute_offsets() {
2015 InstanceKlass* k = vmClasses::VirtualThread_klass();
2016 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2017 }
2018
2019 bool java_lang_VirtualThread::is_instance(oop obj) {
2020 return obj != nullptr && is_subclass(obj->klass());
2021 }
2022
2023 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2024 oop thread = vthread->obj_field(_carrierThread_offset);
2025 return thread;
2026 }
2027
2028 oop java_lang_VirtualThread::continuation(oop vthread) {
2029 oop cont = vthread->obj_field(_continuation_offset);
2030 return cont;
2031 }
2032
2033 int java_lang_VirtualThread::state(oop vthread) {
2034 return vthread->int_field_acquire(_state_offset);
2035 }
2036
2037 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2038 JavaThreadStatus status = JavaThreadStatus::NEW;
2039 switch (state & ~SUSPENDED) {
2040 case NEW:
2041 status = JavaThreadStatus::NEW;
2042 break;
2043 case STARTED:
2044 case RUNNING:
2045 case PARKING:
2046 case TIMED_PARKING:
2047 case UNPARKED:
2048 case YIELDING:
2049 case YIELDED:
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 TERMINATED:
2061 status = JavaThreadStatus::TERMINATED;
2062 break;
2063 default:
2064 ShouldNotReachHere();
2065 }
2066 return status;
2067 }
2068
2069 #if INCLUDE_CDS
2070 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2071 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2072 }
2073 #endif
2074
2075 // java_lang_Throwable
2076
2077 int java_lang_Throwable::_backtrace_offset;
2078 int java_lang_Throwable::_detailMessage_offset;
2079 int java_lang_Throwable::_stackTrace_offset;
2080 int java_lang_Throwable::_depth_offset;
2081 int java_lang_Throwable::_cause_offset;
2082 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2083
2084 #define THROWABLE_FIELDS_DO(macro) \
2085 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2086 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2087 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2088 macro(_depth_offset, k, "depth", int_signature, false); \
2089 macro(_cause_offset, k, "cause", throwable_signature, false); \
2090 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2091
2092 void java_lang_Throwable::compute_offsets() {
2093 InstanceKlass* k = vmClasses::Throwable_klass();
2094 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2095 }
2096
2097 #if INCLUDE_CDS
2098 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2099 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2100 }
2101 #endif
2102
2103 oop java_lang_Throwable::unassigned_stacktrace() {
2104 InstanceKlass* ik = vmClasses::Throwable_klass();
2105 oop base = ik->static_field_base_raw();
2106 return base->obj_field(_static_unassigned_stacktrace_offset);
2107 }
2108
2109 oop java_lang_Throwable::backtrace(oop throwable) {
2110 return throwable->obj_field_acquire(_backtrace_offset);
2111 }
2112
2113
2114 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2115 throwable->release_obj_field_put(_backtrace_offset, value);
2116 }
2117
2118 int java_lang_Throwable::depth(oop throwable) {
2119 return throwable->int_field(_depth_offset);
2120 }
2121
2122 void java_lang_Throwable::set_depth(oop throwable, int value) {
2123 throwable->int_field_put(_depth_offset, value);
2124 }
2125
2126 oop java_lang_Throwable::message(oop throwable) {
2127 return throwable->obj_field(_detailMessage_offset);
2128 }
2129
2130 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2131 oop msg = java_lang_Throwable::message(throwable);
2132 const char* msg_utf8 = nullptr;
2133 if (msg != nullptr) {
2134 msg_utf8 = java_lang_String::as_utf8_string(msg);
2135 }
2136 return msg_utf8;
2137 }
2138
2139 oop java_lang_Throwable::cause(oop throwable) {
2140 return throwable->obj_field(_cause_offset);
2141 }
2142
2143 void java_lang_Throwable::set_message(oop throwable, oop value) {
2144 throwable->obj_field_put(_detailMessage_offset, value);
2145 }
2146
2147
2148 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2149 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2150 }
2151
2152 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2153 set_stacktrace(throwable, nullptr);
2154 }
2155
2156 oop java_lang_Throwable::create_exception_instance(Symbol* class_name, TRAPS) {
2157 Klass* k = SystemDictionary::resolve_or_fail(class_name, true, CHECK_NULL);
2158 return InstanceKlass::cast(k)->allocate_instance(CHECK_NULL);
2159 }
2160
2161 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2162 ResourceMark rm;
2163 Klass* k = throwable->klass();
2164 assert(k != nullptr, "just checking");
2165 st->print("%s", k->external_name());
2166 oop msg = message(throwable);
2167 if (msg != nullptr) {
2168 st->print(": %s", java_lang_String::as_utf8_string(msg));
2169 }
2170 }
2171
2172 // After this many redefines, the stack trace is unreliable.
2173 const int MAX_VERSION = USHRT_MAX;
2174
2175 static inline bool version_matches(Method* method, int version) {
2176 assert(version < MAX_VERSION, "version is too big");
2177 return method != nullptr && (method->constants()->version() == version);
2178 }
2179
2180 // This class provides a simple wrapper over the internal structure of
2181 // exception backtrace to insulate users of the backtrace from needing
2182 // to know what it looks like.
2183 // The code of this class is not GC safe. Allocations can only happen
2184 // in expand().
2185 class BacktraceBuilder: public StackObj {
2186 friend class BacktraceIterator;
2187 private:
2188 Handle _backtrace;
2189 objArrayOop _head;
2190 typeArrayOop _methods;
2191 typeArrayOop _bcis;
2192 objArrayOop _mirrors;
2193 typeArrayOop _names; // Needed to insulate method name against redefinition.
2194 // True if the top frame of the backtrace is omitted because it shall be hidden.
2195 bool _has_hidden_top_frame;
2196 int _index;
2197 NoSafepointVerifier _nsv;
2198
2199 enum {
2200 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2201 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2202 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2203 trace_names_offset = java_lang_Throwable::trace_names_offset,
2204 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2205 trace_next_offset = java_lang_Throwable::trace_next_offset,
2206 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2207 trace_size = java_lang_Throwable::trace_size,
2208 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2209 };
2210
2211 // get info out of chunks
2212 static typeArrayOop get_methods(objArrayHandle chunk) {
2213 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2214 assert(methods != nullptr, "method array should be initialized in backtrace");
2215 return methods;
2216 }
2217 static typeArrayOop get_bcis(objArrayHandle chunk) {
2218 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2219 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2220 return bcis;
2221 }
2222 static objArrayOop get_mirrors(objArrayHandle chunk) {
2223 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2224 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2225 return mirrors;
2226 }
2227 static typeArrayOop get_names(objArrayHandle chunk) {
2228 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2229 assert(names != nullptr, "names array should be initialized in backtrace");
2230 return names;
2231 }
2232 static bool has_hidden_top_frame(objArrayHandle chunk) {
2233 oop hidden = chunk->obj_at(trace_hidden_offset);
2234 return hidden != nullptr;
2235 }
2236
2237 public:
2238
2239 // constructor for new backtrace
2240 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2241 expand(CHECK);
2242 _backtrace = Handle(THREAD, _head);
2243 _index = 0;
2244 }
2245
2246 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2247 _methods = get_methods(backtrace);
2248 _bcis = get_bcis(backtrace);
2249 _mirrors = get_mirrors(backtrace);
2250 _names = get_names(backtrace);
2251 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2252 assert(_methods->length() == _bcis->length() &&
2253 _methods->length() == _mirrors->length() &&
2254 _mirrors->length() == _names->length(),
2255 "method and source information arrays should match");
2256
2257 // head is the preallocated backtrace
2258 _head = backtrace();
2259 _backtrace = Handle(thread, _head);
2260 _index = 0;
2261 }
2262
2263 void expand(TRAPS) {
2264 objArrayHandle old_head(THREAD, _head);
2265 PauseNoSafepointVerifier pnsv(&_nsv);
2266
2267 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2268 objArrayHandle new_head(THREAD, head);
2269
2270 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2271 typeArrayHandle new_methods(THREAD, methods);
2272
2273 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2274 typeArrayHandle new_bcis(THREAD, bcis);
2275
2276 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2277 objArrayHandle new_mirrors(THREAD, mirrors);
2278
2279 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2280 typeArrayHandle new_names(THREAD, names);
2281
2282 if (!old_head.is_null()) {
2283 old_head->obj_at_put(trace_next_offset, new_head());
2284 }
2285 new_head->obj_at_put(trace_methods_offset, new_methods());
2286 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2287 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2288 new_head->obj_at_put(trace_names_offset, new_names());
2289 new_head->obj_at_put(trace_hidden_offset, nullptr);
2290
2291 _head = new_head();
2292 _methods = new_methods();
2293 _bcis = new_bcis();
2294 _mirrors = new_mirrors();
2295 _names = new_names();
2296 _index = 0;
2297 }
2298
2299 oop backtrace() {
2300 return _backtrace();
2301 }
2302
2303 inline void push(Method* method, int bci, TRAPS) {
2304 // Smear the -1 bci to 0 since the array only holds unsigned
2305 // shorts. The later line number lookup would just smear the -1
2306 // to a 0 even if it could be recorded.
2307 if (bci == SynchronizationEntryBCI) bci = 0;
2308
2309 if (_index >= trace_chunk_size) {
2310 methodHandle mhandle(THREAD, method);
2311 expand(CHECK);
2312 method = mhandle();
2313 }
2314
2315 _methods->ushort_at_put(_index, method->orig_method_idnum());
2316 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2317
2318 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2319 // klass owning the symbols alive so their refcounts aren't decremented.
2320 Symbol* name = method->name();
2321 _names->symbol_at_put(_index, name);
2322
2323 // We need to save the mirrors in the backtrace to keep the class
2324 // from being unloaded while we still have this stack trace.
2325 assert(method->method_holder()->java_mirror() != nullptr, "never push null for mirror");
2326 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2327
2328 _index++;
2329 }
2330
2331 void set_has_hidden_top_frame() {
2332 if (!_has_hidden_top_frame) {
2333 // It would be nice to add java/lang/Boolean::TRUE here
2334 // to indicate that this backtrace has a hidden top frame.
2335 // But this code is used before TRUE is allocated.
2336 // Therefore let's just use an arbitrary legal oop
2337 // available right here. _methods is a short[].
2338 assert(_methods != nullptr, "we need a legal oop");
2339 _has_hidden_top_frame = true;
2340 _head->obj_at_put(trace_hidden_offset, _methods);
2341 }
2342 }
2343 };
2344
2345 struct BacktraceElement : public StackObj {
2346 int _method_id;
2347 int _bci;
2348 int _version;
2349 Symbol* _name;
2350 Handle _mirror;
2351 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2352 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2353 };
2354
2355 class BacktraceIterator : public StackObj {
2356 int _index;
2357 objArrayHandle _result;
2358 objArrayHandle _mirrors;
2359 typeArrayHandle _methods;
2360 typeArrayHandle _bcis;
2361 typeArrayHandle _names;
2362
2363 void init(objArrayHandle result, Thread* thread) {
2364 // Get method id, bci, version and mirror from chunk
2365 _result = result;
2366 if (_result.not_null()) {
2367 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2368 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2369 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2370 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2371 _index = 0;
2372 }
2373 }
2374 public:
2375 BacktraceIterator(objArrayHandle result, Thread* thread) {
2376 init(result, thread);
2377 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2378 }
2379
2380 BacktraceElement next(Thread* thread) {
2381 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2382 _methods->ushort_at(_index),
2383 Backtrace::version_at(_bcis->int_at(_index)),
2384 Backtrace::bci_at(_bcis->int_at(_index)),
2385 _names->symbol_at(_index));
2386 _index++;
2387
2388 if (_index >= java_lang_Throwable::trace_chunk_size) {
2389 int next_offset = java_lang_Throwable::trace_next_offset;
2390 // Get next chunk
2391 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2392 init(result, thread);
2393 }
2394 return e;
2395 }
2396
2397 bool repeat() {
2398 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2399 }
2400 };
2401
2402
2403 // Print stack trace element to resource allocated buffer
2404 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2405 int version, int bci, Symbol* name) {
2406 ResourceMark rm;
2407
2408 // Get strings and string lengths
2409 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2410 const char* klass_name = holder->external_name();
2411 int buf_len = (int)strlen(klass_name);
2412
2413 char* method_name = name->as_C_string();
2414 buf_len += (int)strlen(method_name);
2415
2416 char* source_file_name = nullptr;
2417 Symbol* source = Backtrace::get_source_file_name(holder, version);
2418 if (source != nullptr) {
2419 source_file_name = source->as_C_string();
2420 buf_len += (int)strlen(source_file_name);
2421 }
2422
2423 char *module_name = nullptr, *module_version = nullptr;
2424 ModuleEntry* module = holder->module();
2425 if (module->is_named()) {
2426 module_name = module->name()->as_C_string();
2427 buf_len += (int)strlen(module_name);
2428 if (module->version() != nullptr) {
2429 module_version = module->version()->as_C_string();
2430 buf_len += (int)strlen(module_version);
2431 }
2432 }
2433
2434 // Allocate temporary buffer with extra space for formatting and line number
2435 const size_t buf_size = buf_len + 64;
2436 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2437
2438 // Print stack trace line in buffer
2439 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2440
2441 // Print module information
2442 if (module_name != nullptr) {
2443 if (module_version != nullptr) {
2444 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2445 } else {
2446 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2447 }
2448 }
2449
2450 // The method can be null if the requested class version is gone
2451 Method* method = holder->method_with_orig_idnum(method_id, version);
2452 if (!version_matches(method, version)) {
2453 strcat(buf, "Redefined)");
2454 } else {
2455 int line_number = Backtrace::get_line_number(method, bci);
2456 if (line_number == -2) {
2457 strcat(buf, "Native Method)");
2458 } else {
2459 if (source_file_name != nullptr && (line_number != -1)) {
2460 // Sourcename and linenumber
2461 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2462 } else if (source_file_name != nullptr) {
2463 // Just sourcename
2464 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2465 } else {
2466 // Neither sourcename nor linenumber
2467 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2468 }
2469 nmethod* nm = method->code();
2470 if (WizardMode && nm != nullptr) {
2471 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2472 }
2473 }
2474 }
2475
2476 st->print_cr("%s", buf);
2477 }
2478
2479 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2480 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2481 int method_id = method->orig_method_idnum();
2482 int version = method->constants()->version();
2483 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2484 }
2485
2486 /**
2487 * Print the throwable message and its stack trace plus all causes by walking the
2488 * cause chain. The output looks the same as of Throwable.printStackTrace().
2489 */
2490 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2491 // First, print the message.
2492 print(throwable(), st);
2493 st->cr();
2494
2495 // Now print the stack trace.
2496 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2497 while (throwable.not_null()) {
2498 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2499 if (result.is_null()) {
2500 st->print_raw_cr("\t<<no stack trace available>>");
2501 return;
2502 }
2503 BacktraceIterator iter(result, THREAD);
2504
2505 while (iter.repeat()) {
2506 BacktraceElement bte = iter.next(THREAD);
2507 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2508 }
2509 if (THREAD->can_call_java()) {
2510 // Call getCause() which doesn't necessarily return the _cause field.
2511 ExceptionMark em(THREAD);
2512 JavaValue cause(T_OBJECT);
2513 JavaCalls::call_virtual(&cause,
2514 throwable,
2515 throwable->klass(),
2516 vmSymbols::getCause_name(),
2517 vmSymbols::void_throwable_signature(),
2518 THREAD);
2519 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2520 if (HAS_PENDING_EXCEPTION) {
2521 CLEAR_PENDING_EXCEPTION;
2522 throwable = Handle();
2523 } else {
2524 throwable = Handle(THREAD, cause.get_oop());
2525 if (throwable.not_null()) {
2526 st->print("Caused by: ");
2527 print(throwable(), st);
2528 st->cr();
2529 }
2530 }
2531 } else {
2532 st->print_raw_cr("<<cannot call Java to get cause>>");
2533 return;
2534 }
2535 }
2536 }
2537
2538 /**
2539 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2540 */
2541 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2542 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2543 JavaValue result(T_VOID);
2544 JavaCalls::call_virtual(&result,
2545 throwable,
2546 vmClasses::Throwable_klass(),
2547 vmSymbols::printStackTrace_name(),
2548 vmSymbols::void_method_signature(),
2549 THREAD);
2550 }
2551
2552 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2553 if (!StackTraceInThrowable) return;
2554 ResourceMark rm(THREAD);
2555
2556 // Start out by clearing the backtrace for this object, in case the VM
2557 // runs out of memory while allocating the stack trace
2558 set_backtrace(throwable(), nullptr);
2559 // Clear lazily constructed Java level stacktrace if refilling occurs
2560 // This is unnecessary in 1.7+ but harmless
2561 clear_stacktrace(throwable());
2562
2563 int max_depth = MaxJavaStackTraceDepth;
2564 JavaThread* thread = THREAD;
2565
2566 BacktraceBuilder bt(CHECK);
2567
2568 // If there is no Java frame just return the method that was being called
2569 // with bci 0
2570 if (!thread->has_last_Java_frame()) {
2571 if (max_depth >= 1 && method() != nullptr) {
2572 bt.push(method(), 0, CHECK);
2573 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2574 set_depth(throwable(), 1);
2575 set_backtrace(throwable(), bt.backtrace());
2576 }
2577 return;
2578 }
2579
2580 // Instead of using vframe directly, this version of fill_in_stack_trace
2581 // basically handles everything by hand. This significantly improved the
2582 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2583 // See bug 6333838 for more details.
2584 // The "ASSERT" here is to verify this method generates the exactly same stack
2585 // trace as utilizing vframe.
2586 #ifdef ASSERT
2587 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2588 #endif
2589 int total_count = 0;
2590 RegisterMap map(thread,
2591 RegisterMap::UpdateMap::skip,
2592 RegisterMap::ProcessFrames::skip,
2593 RegisterMap::WalkContinuation::include);
2594 int decode_offset = 0;
2595 nmethod* nm = nullptr;
2596 bool skip_fillInStackTrace_check = false;
2597 bool skip_throwableInit_check = false;
2598 bool skip_hidden = !ShowHiddenFrames;
2599 bool show_carrier = ShowCarrierFrames;
2600 ContinuationEntry* cont_entry = thread->last_continuation();
2601 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2602 Method* method = nullptr;
2603 int bci = 0;
2604
2605 // Compiled java method case.
2606 if (decode_offset != 0) {
2607 DebugInfoReadStream stream(nm, decode_offset);
2608 decode_offset = stream.read_int();
2609 method = (Method*)nm->metadata_at(stream.read_int());
2610 bci = stream.read_bci();
2611 } else {
2612 if (fr.is_first_frame()) break;
2613
2614 if (Continuation::is_continuation_enterSpecial(fr)) {
2615 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2616 if (!show_carrier && cont_entry->is_virtual_thread()) {
2617 break;
2618 }
2619 cont_entry = cont_entry->parent();
2620 }
2621
2622 address pc = fr.pc();
2623 if (fr.is_interpreted_frame()) {
2624 address bcp;
2625 if (!map.in_cont()) {
2626 bcp = fr.interpreter_frame_bcp();
2627 method = fr.interpreter_frame_method();
2628 } else {
2629 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2630 method = map.stack_chunk()->interpreter_frame_method(fr);
2631 }
2632 bci = method->bci_from(bcp);
2633 fr = fr.sender(&map);
2634 } else {
2635 CodeBlob* cb = fr.cb();
2636 // HMMM QQQ might be nice to have frame return nm as null if cb is non-null
2637 // but non nmethod
2638 fr = fr.sender(&map);
2639 if (cb == nullptr || !cb->is_nmethod()) {
2640 continue;
2641 }
2642 nm = cb->as_nmethod();
2643 assert(nm->method() != nullptr, "must be");
2644 if (nm->method()->is_native()) {
2645 method = nm->method();
2646 bci = 0;
2647 } else {
2648 PcDesc* pd = nm->pc_desc_at(pc);
2649 decode_offset = pd->scope_decode_offset();
2650 // if decode_offset is not equal to 0, it will execute the
2651 // "compiled java method case" at the beginning of the loop.
2652 continue;
2653 }
2654 }
2655 }
2656 #ifdef ASSERT
2657 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2658 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2659 st.next();
2660 }
2661 #endif
2662
2663 // the format of the stacktrace will be:
2664 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2665 // - 0 or more <init> methods for the exception class (skipped)
2666 // - rest of the stack
2667
2668 if (!skip_fillInStackTrace_check) {
2669 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2670 throwable->is_a(method->method_holder())) {
2671 continue;
2672 }
2673 else {
2674 skip_fillInStackTrace_check = true; // gone past them all
2675 }
2676 }
2677 if (!skip_throwableInit_check) {
2678 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2679
2680 // skip <init> methods of the exception class and superclasses
2681 // This is similar to classic VM.
2682 if (method->name() == vmSymbols::object_initializer_name() &&
2683 throwable->is_a(method->method_holder())) {
2684 continue;
2685 } else {
2686 // there are none or we've seen them all - either way stop checking
2687 skip_throwableInit_check = true;
2688 }
2689 }
2690 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2691 if (skip_hidden) {
2692 if (total_count == 0) {
2693 // The top frame will be hidden from the stack trace.
2694 bt.set_has_hidden_top_frame();
2695 }
2696 continue;
2697 }
2698 }
2699
2700 bt.push(method, bci, CHECK);
2701 total_count++;
2702 }
2703
2704 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2705
2706 // Put completed stack trace into throwable object
2707 set_backtrace(throwable(), bt.backtrace());
2708 set_depth(throwable(), total_count);
2709 }
2710
2711 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2712 // No-op if stack trace is disabled
2713 if (!StackTraceInThrowable) {
2714 return;
2715 }
2716
2717 // Disable stack traces for some preallocated out of memory errors
2718 if (!Universe::should_fill_in_stack_trace(throwable)) {
2719 return;
2720 }
2721
2722 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2723 PreserveExceptionMark pm(THREAD);
2724
2725 fill_in_stack_trace(throwable, method, THREAD);
2726 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2727 // original exception via the PreserveExceptionMark destructor.
2728 CLEAR_PENDING_EXCEPTION;
2729 }
2730
2731 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2732 // Allocate stack trace - backtrace is created but not filled in
2733
2734 // No-op if stack trace is disabled
2735 if (!StackTraceInThrowable) return;
2736 BacktraceBuilder bt(CHECK); // creates a backtrace
2737 set_backtrace(throwable(), bt.backtrace());
2738 }
2739
2740
2741 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2742 // Fill in stack trace into preallocated backtrace (no GC)
2743
2744 // No-op if stack trace is disabled
2745 if (!StackTraceInThrowable) return;
2746
2747 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2748
2749 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2750
2751 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2752 assert(backtrace.not_null(), "backtrace should have been preallocated");
2753
2754 ResourceMark rm(THREAD);
2755 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2756
2757 BacktraceBuilder bt(THREAD, backtrace);
2758
2759 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2760 // methods as preallocated errors aren't created by "java" code.
2761
2762 // fill in as much stack trace as possible
2763 int chunk_count = 0;
2764 for (;!st.at_end(); st.next()) {
2765 bt.push(st.method(), st.bci(), CHECK);
2766 chunk_count++;
2767
2768 // Bail-out for deep stacks
2769 if (chunk_count >= trace_chunk_size) break;
2770 }
2771 set_depth(throwable(), chunk_count);
2772 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2773
2774 // We support the Throwable immutability protocol defined for Java 7.
2775 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2776 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2777 }
2778
2779 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2780 objArrayHandle stack_trace_array_h, TRAPS) {
2781
2782 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2783 THROW(vmSymbols::java_lang_NullPointerException());
2784 }
2785
2786 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2787
2788 if (stack_trace_array_h->length() != depth) {
2789 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2790 }
2791
2792 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2793 BacktraceIterator iter(result, THREAD);
2794
2795 int index = 0;
2796 while (iter.repeat()) {
2797 BacktraceElement bte = iter.next(THREAD);
2798
2799 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2800
2801 if (stack_trace_element.is_null()) {
2802 THROW(vmSymbols::java_lang_NullPointerException());
2803 }
2804
2805 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2806 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2807
2808 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2809 method,
2810 bte._version,
2811 bte._bci,
2812 bte._name,
2813 CHECK);
2814 }
2815 }
2816
2817 Handle java_lang_Throwable::create_initialization_error(JavaThread* current, Handle throwable) {
2818 // Creates an ExceptionInInitializerError to be recorded as the initialization error when class initialization
2819 // failed due to the passed in 'throwable'. We cannot save 'throwable' directly due to issues with keeping alive
2820 // all objects referenced via its stacktrace. So instead we save a new EIIE instance, with the same message and
2821 // symbolic stacktrace of 'throwable'.
2822 assert(throwable.not_null(), "shouldn't be");
2823
2824 // Now create the message from the original exception and thread name.
2825 ResourceMark rm(current);
2826 const char *message = nullptr;
2827 oop detailed_message = java_lang_Throwable::message(throwable());
2828 if (detailed_message != nullptr) {
2829 message = java_lang_String::as_utf8_string(detailed_message);
2830 }
2831 stringStream st;
2832 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2833 message == nullptr ? "" : ":");
2834 if (message == nullptr) {
2835 st.print("[in thread \"%s\"]", current->name());
2836 } else {
2837 st.print("%s [in thread \"%s\"]", message, current->name());
2838 }
2839
2840 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2841 Handle init_error = Exceptions::new_exception(current, exception_name, st.as_string());
2842 // If new_exception returns a different exception while creating the exception,
2843 // abandon the attempt to save the initialization error and return null.
2844 if (init_error->klass()->name() != exception_name) {
2845 log_info(class, init)("Exception %s thrown while saving initialization exception",
2846 init_error->klass()->external_name());
2847 return Handle();
2848 }
2849
2850 // Call to java to fill in the stack trace and clear declaringClassObject to
2851 // not keep classes alive in the stack trace.
2852 // call this: public StackTraceElement[] getStackTrace()
2853 JavaValue result(T_ARRAY);
2854 JavaCalls::call_virtual(&result, throwable,
2855 vmClasses::Throwable_klass(),
2856 vmSymbols::getStackTrace_name(),
2857 vmSymbols::getStackTrace_signature(),
2858 current);
2859 if (!current->has_pending_exception()){
2860 Handle stack_trace(current, result.get_oop());
2861 assert(stack_trace->is_objArray(), "Should be an array");
2862 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
2863 // Clear backtrace because the stacktrace should be used instead.
2864 set_backtrace(init_error(), nullptr);
2865 } else {
2866 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
2867 init_error->klass()->external_name());
2868 current->clear_pending_exception();
2869 }
2870
2871 return init_error;
2872 }
2873
2874 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2875 JavaThread* current = JavaThread::current();
2876 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2877 BacktraceIterator iter(result, current);
2878 // No backtrace available.
2879 if (!iter.repeat()) return false;
2880
2881 // If the exception happened in a frame that has been hidden, i.e.,
2882 // omitted from the back trace, we can not compute the message.
2883 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2884 if (hidden != nullptr) {
2885 return false;
2886 }
2887
2888 // Get first backtrace element.
2889 BacktraceElement bte = iter.next(current);
2890
2891 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2892 assert(holder != nullptr, "first element should be non-null");
2893 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2894
2895 // Original version is no longer available.
2896 if (m == nullptr || !version_matches(m, bte._version)) {
2897 return false;
2898 }
2899
2900 *method = m;
2901 *bci = bte._bci;
2902 return true;
2903 }
2904
2905 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2906 // Allocate java.lang.StackTraceElement instance
2907 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2908 assert(k != nullptr, "must be loaded in 1.4+");
2909 if (k->should_be_initialized()) {
2910 k->initialize(CHECK_NULL);
2911 }
2912
2913 Handle element = k->allocate_instance_handle(CHECK_NULL);
2914
2915 int version = method->constants()->version();
2916 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2917 return element();
2918 }
2919
2920 void java_lang_StackTraceElement::fill_in(Handle element,
2921 InstanceKlass* holder, const methodHandle& method,
2922 int version, int bci, Symbol* name, TRAPS) {
2923 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2924
2925 ResourceMark rm(THREAD);
2926 HandleMark hm(THREAD);
2927
2928 // Fill in class name
2929 Handle java_class(THREAD, holder->java_mirror());
2930 oop classname = java_lang_Class::name(java_class, CHECK);
2931 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2932 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2933
2934 oop loader = holder->class_loader();
2935 if (loader != nullptr) {
2936 oop loader_name = java_lang_ClassLoader::name(loader);
2937 if (loader_name != nullptr)
2938 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2939 }
2940
2941 // Fill in method name
2942 oop methodname = StringTable::intern(name, CHECK);
2943 java_lang_StackTraceElement::set_methodName(element(), methodname);
2944
2945 // Fill in module name and version
2946 ModuleEntry* module = holder->module();
2947 if (module->is_named()) {
2948 oop module_name = StringTable::intern(module->name(), CHECK);
2949 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2950 oop module_version;
2951 if (module->version() != nullptr) {
2952 module_version = StringTable::intern(module->version(), CHECK);
2953 } else {
2954 module_version = nullptr;
2955 }
2956 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2957 }
2958
2959 if (method() == nullptr || !version_matches(method(), version)) {
2960 // The method was redefined, accurate line number information isn't available
2961 java_lang_StackTraceElement::set_fileName(element(), nullptr);
2962 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2963 } else {
2964 Symbol* source;
2965 oop source_file;
2966 int line_number;
2967 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2968
2969 java_lang_StackTraceElement::set_fileName(element(), source_file);
2970 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2971 }
2972 }
2973
2974 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2975 InstanceKlass* holder,
2976 int version,
2977 const methodHandle& method,
2978 int bci,
2979 Symbol*& source,
2980 oop& source_file,
2981 int& line_number, TRAPS) {
2982 // Fill in source file name and line number.
2983 source = Backtrace::get_source_file_name(holder, version);
2984 source_file = java_lang_Class::source_file(java_class());
2985 if (source != nullptr) {
2986 // Class was not redefined. We can trust its cache if set,
2987 // else we have to initialize it.
2988 if (source_file == nullptr) {
2989 source_file = StringTable::intern(source, CHECK);
2990 java_lang_Class::set_source_file(java_class(), source_file);
2991 }
2992 } else {
2993 // Class was redefined. Dump the cache if it was set.
2994 if (source_file != nullptr) {
2995 source_file = nullptr;
2996 java_lang_Class::set_source_file(java_class(), source_file);
2997 }
2998 }
2999 line_number = Backtrace::get_line_number(method(), bci);
3000 }
3001
3002 #if INCLUDE_JVMCI
3003 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3004 Symbol*& filename, int& line_number, TRAPS) {
3005 ResourceMark rm(THREAD);
3006 HandleMark hm(THREAD);
3007
3008 filename = nullptr;
3009 line_number = -1;
3010
3011 oop source_file;
3012 int version = method->constants()->version();
3013 InstanceKlass* holder = method->method_holder();
3014 Handle java_class(THREAD, holder->java_mirror());
3015 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3016 }
3017 #endif // INCLUDE_JVMCI
3018
3019 // java_lang_ClassFrameInfo
3020
3021 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3022 int java_lang_ClassFrameInfo::_flags_offset;
3023
3024 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3025 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3026 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3027
3028 void java_lang_ClassFrameInfo::compute_offsets() {
3029 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3030 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3031 }
3032
3033 #if INCLUDE_CDS
3034 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3035 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3036 }
3037 #endif
3038
3039 static int get_flags(const methodHandle& m) {
3040 int flags = (jushort)( m->access_flags().as_short() & JVM_RECOGNIZED_METHOD_MODIFIERS );
3041 if (m->is_initializer()) {
3042 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3043 } else {
3044 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3045 }
3046 if (m->caller_sensitive()) {
3047 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3048 }
3049 if (m->is_hidden()) {
3050 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3051 }
3052 assert((flags & 0xFF000000) == 0, "unexpected flags");
3053 return flags;
3054 }
3055
3056 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3057 return obj->obj_field(_classOrMemberName_offset);
3058 }
3059
3060 int java_lang_ClassFrameInfo::flags(oop obj) {
3061 return obj->int_field(_flags_offset);
3062 }
3063
3064 void java_lang_ClassFrameInfo::init_class(Handle stackFrame, const methodHandle& m) {
3065 stackFrame->obj_field_put(_classOrMemberName_offset, m->method_holder()->java_mirror());
3066 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3067 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3068 stackFrame->int_field_put(_flags_offset, flags);
3069 }
3070
3071 void java_lang_ClassFrameInfo::init_method(Handle stackFrame, const methodHandle& m, TRAPS) {
3072 oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
3073 stackFrame->obj_field_put(_classOrMemberName_offset, rmethod_name);
3074 // flags is initialized when ClassFrameInfo object is constructed and retain the value
3075 int flags = java_lang_ClassFrameInfo::flags(stackFrame()) | get_flags(m);
3076 stackFrame->int_field_put(_flags_offset, flags);
3077 }
3078
3079
3080 // java_lang_StackFrameInfo
3081
3082 int java_lang_StackFrameInfo::_type_offset;
3083 int java_lang_StackFrameInfo::_name_offset;
3084 int java_lang_StackFrameInfo::_bci_offset;
3085 int java_lang_StackFrameInfo::_version_offset;
3086 int java_lang_StackFrameInfo::_contScope_offset;
3087
3088 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3089 macro(_type_offset, k, "type", object_signature, false); \
3090 macro(_name_offset, k, "name", string_signature, false); \
3091 macro(_bci_offset, k, "bci", int_signature, false); \
3092 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3093
3094 void java_lang_StackFrameInfo::compute_offsets() {
3095 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3096 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3097 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3098 }
3099
3100 #if INCLUDE_CDS
3101 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3102 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3103 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3104 }
3105 #endif
3106
3107 Method* java_lang_StackFrameInfo::get_method(oop obj) {
3108 oop m = java_lang_ClassFrameInfo::classOrMemberName(obj);
3109 Method* method = java_lang_invoke_ResolvedMethodName::vmtarget(m);
3110 return method;
3111 }
3112
3113 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3114 // set Method* or mid/cpref
3115 HandleMark hm(THREAD);
3116 Handle cont_h(THREAD, cont);
3117 java_lang_ClassFrameInfo::init_method(stackFrame, method, CHECK);
3118
3119 // set bci
3120 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3121 // method may be redefined; store the version
3122 int version = method->constants()->version();
3123 assert((jushort)version == version, "version should be short");
3124 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3125
3126 oop contScope = cont_h() != nullptr ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)nullptr;
3127 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3128 }
3129
3130 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3131 ResourceMark rm(THREAD);
3132 HandleMark hm(THREAD);
3133
3134 Method* method = java_lang_StackFrameInfo::get_method(stackFrame());
3135 InstanceKlass* holder = method->method_holder();
3136 short version = stackFrame->short_field(_version_offset);
3137 int bci = stackFrame->int_field(_bci_offset);
3138 Symbol* name = method->name();
3139 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3140 }
3141
3142 oop java_lang_StackFrameInfo::type(oop obj) {
3143 return obj->obj_field(_type_offset);
3144 }
3145
3146 void java_lang_StackFrameInfo::set_type(oop obj, oop value) {
3147 obj->obj_field_put(_type_offset, value);
3148 }
3149
3150 oop java_lang_StackFrameInfo::name(oop obj) {
3151 return obj->obj_field(_name_offset);
3152 }
3153
3154 void java_lang_StackFrameInfo::set_name(oop obj, oop value) {
3155 obj->obj_field_put(_name_offset, value);
3156 }
3157
3158 void java_lang_StackFrameInfo::set_version(oop obj, short value) {
3159 obj->short_field_put(_version_offset, value);
3160 }
3161
3162 void java_lang_StackFrameInfo::set_bci(oop obj, int value) {
3163 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3164 obj->int_field_put(_bci_offset, value);
3165 }
3166
3167 void java_lang_StackFrameInfo::set_contScope(oop obj, oop value) {
3168 obj->obj_field_put(_contScope_offset, value);
3169 }
3170
3171 int java_lang_LiveStackFrameInfo::_monitors_offset;
3172 int java_lang_LiveStackFrameInfo::_locals_offset;
3173 int java_lang_LiveStackFrameInfo::_operands_offset;
3174 int java_lang_LiveStackFrameInfo::_mode_offset;
3175
3176 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3177 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3178 macro(_locals_offset, k, "locals", object_array_signature, false); \
3179 macro(_operands_offset, k, "operands", object_array_signature, false); \
3180 macro(_mode_offset, k, "mode", int_signature, false)
3181
3182 void java_lang_LiveStackFrameInfo::compute_offsets() {
3183 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3184 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3185 }
3186
3187 #if INCLUDE_CDS
3188 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3189 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3190 }
3191 #endif
3192
3193 void java_lang_LiveStackFrameInfo::set_monitors(oop obj, oop value) {
3194 obj->obj_field_put(_monitors_offset, value);
3195 }
3196
3197 void java_lang_LiveStackFrameInfo::set_locals(oop obj, oop value) {
3198 obj->obj_field_put(_locals_offset, value);
3199 }
3200
3201 void java_lang_LiveStackFrameInfo::set_operands(oop obj, oop value) {
3202 obj->obj_field_put(_operands_offset, value);
3203 }
3204
3205 void java_lang_LiveStackFrameInfo::set_mode(oop obj, int value) {
3206 obj->int_field_put(_mode_offset, value);
3207 }
3208
3209
3210 // java_lang_AccessibleObject
3211
3212 int java_lang_reflect_AccessibleObject::_override_offset;
3213
3214 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3215 macro(_override_offset, k, "override", bool_signature, false)
3216
3217 void java_lang_reflect_AccessibleObject::compute_offsets() {
3218 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3219 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3220 }
3221
3222 #if INCLUDE_CDS
3223 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3224 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3225 }
3226 #endif
3227
3228 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3229 return (jboolean) reflect->bool_field(_override_offset);
3230 }
3231
3232 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3233 reflect->bool_field_put(_override_offset, (int) value);
3234 }
3235
3236 // java_lang_reflect_Method
3237
3238 int java_lang_reflect_Method::_clazz_offset;
3239 int java_lang_reflect_Method::_name_offset;
3240 int java_lang_reflect_Method::_returnType_offset;
3241 int java_lang_reflect_Method::_parameterTypes_offset;
3242 int java_lang_reflect_Method::_exceptionTypes_offset;
3243 int java_lang_reflect_Method::_slot_offset;
3244 int java_lang_reflect_Method::_modifiers_offset;
3245 int java_lang_reflect_Method::_signature_offset;
3246 int java_lang_reflect_Method::_annotations_offset;
3247 int java_lang_reflect_Method::_parameter_annotations_offset;
3248 int java_lang_reflect_Method::_annotation_default_offset;
3249
3250 #define METHOD_FIELDS_DO(macro) \
3251 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3252 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3253 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3254 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3255 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3256 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3257 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3258 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3259 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3260 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3261 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3262
3263 void java_lang_reflect_Method::compute_offsets() {
3264 InstanceKlass* k = vmClasses::reflect_Method_klass();
3265 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3266 }
3267
3268 #if INCLUDE_CDS
3269 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3270 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3271 }
3272 #endif
3273
3274 Handle java_lang_reflect_Method::create(TRAPS) {
3275 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3276 Klass* klass = vmClasses::reflect_Method_klass();
3277 // This class is eagerly initialized during VM initialization, since we keep a reference
3278 // to one of the methods
3279 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3280 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3281 }
3282
3283 oop java_lang_reflect_Method::clazz(oop reflect) {
3284 return reflect->obj_field(_clazz_offset);
3285 }
3286
3287 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3288 reflect->obj_field_put(_clazz_offset, value);
3289 }
3290
3291 int java_lang_reflect_Method::slot(oop reflect) {
3292 return reflect->int_field(_slot_offset);
3293 }
3294
3295 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3296 reflect->int_field_put(_slot_offset, value);
3297 }
3298
3299 void java_lang_reflect_Method::set_name(oop method, oop value) {
3300 method->obj_field_put(_name_offset, value);
3301 }
3302
3303 oop java_lang_reflect_Method::return_type(oop method) {
3304 return method->obj_field(_returnType_offset);
3305 }
3306
3307 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3308 method->obj_field_put(_returnType_offset, value);
3309 }
3310
3311 oop java_lang_reflect_Method::parameter_types(oop method) {
3312 return method->obj_field(_parameterTypes_offset);
3313 }
3314
3315 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3316 method->obj_field_put(_parameterTypes_offset, value);
3317 }
3318
3319 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3320 method->obj_field_put(_exceptionTypes_offset, value);
3321 }
3322
3323 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3324 method->int_field_put(_modifiers_offset, value);
3325 }
3326
3327 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3328 method->obj_field_put(_signature_offset, value);
3329 }
3330
3331 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3332 method->obj_field_put(_annotations_offset, value);
3333 }
3334
3335 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3336 method->obj_field_put(_parameter_annotations_offset, value);
3337 }
3338
3339 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3340 method->obj_field_put(_annotation_default_offset, value);
3341 }
3342
3343 int java_lang_reflect_Constructor::_clazz_offset;
3344 int java_lang_reflect_Constructor::_parameterTypes_offset;
3345 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3346 int java_lang_reflect_Constructor::_slot_offset;
3347 int java_lang_reflect_Constructor::_modifiers_offset;
3348 int java_lang_reflect_Constructor::_signature_offset;
3349 int java_lang_reflect_Constructor::_annotations_offset;
3350 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3351
3352 #define CONSTRUCTOR_FIELDS_DO(macro) \
3353 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3354 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3355 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3356 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3357 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3358 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3359 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3360 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3361
3362 void java_lang_reflect_Constructor::compute_offsets() {
3363 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3364 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3365 }
3366
3367 #if INCLUDE_CDS
3368 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3369 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3370 }
3371 #endif
3372
3373 Handle java_lang_reflect_Constructor::create(TRAPS) {
3374 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3375 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3376 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3377 InstanceKlass* ik = InstanceKlass::cast(k);
3378 // Ensure it is initialized
3379 ik->initialize(CHECK_NH);
3380 return ik->allocate_instance_handle(THREAD);
3381 }
3382
3383 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3384 return reflect->obj_field(_clazz_offset);
3385 }
3386
3387 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3388 reflect->obj_field_put(_clazz_offset, value);
3389 }
3390
3391 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3392 return constructor->obj_field(_parameterTypes_offset);
3393 }
3394
3395 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3396 constructor->obj_field_put(_parameterTypes_offset, value);
3397 }
3398
3399 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3400 constructor->obj_field_put(_exceptionTypes_offset, value);
3401 }
3402
3403 int java_lang_reflect_Constructor::slot(oop reflect) {
3404 return reflect->int_field(_slot_offset);
3405 }
3406
3407 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3408 reflect->int_field_put(_slot_offset, value);
3409 }
3410
3411 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3412 constructor->int_field_put(_modifiers_offset, value);
3413 }
3414
3415 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3416 constructor->obj_field_put(_signature_offset, value);
3417 }
3418
3419 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3420 constructor->obj_field_put(_annotations_offset, value);
3421 }
3422
3423 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3424 method->obj_field_put(_parameter_annotations_offset, value);
3425 }
3426
3427 int java_lang_reflect_Field::_clazz_offset;
3428 int java_lang_reflect_Field::_name_offset;
3429 int java_lang_reflect_Field::_type_offset;
3430 int java_lang_reflect_Field::_slot_offset;
3431 int java_lang_reflect_Field::_modifiers_offset;
3432 int java_lang_reflect_Field::_trusted_final_offset;
3433 int java_lang_reflect_Field::_signature_offset;
3434 int java_lang_reflect_Field::_annotations_offset;
3435
3436 #define FIELD_FIELDS_DO(macro) \
3437 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3438 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3439 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3440 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3441 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3442 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3443 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3444 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3445
3446 void java_lang_reflect_Field::compute_offsets() {
3447 InstanceKlass* k = vmClasses::reflect_Field_klass();
3448 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3449 }
3450
3451 #if INCLUDE_CDS
3452 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3453 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3454 }
3455 #endif
3456
3457 Handle java_lang_reflect_Field::create(TRAPS) {
3458 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3459 Symbol* name = vmSymbols::java_lang_reflect_Field();
3460 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3461 InstanceKlass* ik = InstanceKlass::cast(k);
3462 // Ensure it is initialized
3463 ik->initialize(CHECK_NH);
3464 return ik->allocate_instance_handle(THREAD);
3465 }
3466
3467 oop java_lang_reflect_Field::clazz(oop reflect) {
3468 return reflect->obj_field(_clazz_offset);
3469 }
3470
3471 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3472 reflect->obj_field_put(_clazz_offset, value);
3473 }
3474
3475 oop java_lang_reflect_Field::name(oop field) {
3476 return field->obj_field(_name_offset);
3477 }
3478
3479 void java_lang_reflect_Field::set_name(oop field, oop value) {
3480 field->obj_field_put(_name_offset, value);
3481 }
3482
3483 oop java_lang_reflect_Field::type(oop field) {
3484 return field->obj_field(_type_offset);
3485 }
3486
3487 void java_lang_reflect_Field::set_type(oop field, oop value) {
3488 field->obj_field_put(_type_offset, value);
3489 }
3490
3491 int java_lang_reflect_Field::slot(oop reflect) {
3492 return reflect->int_field(_slot_offset);
3493 }
3494
3495 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3496 reflect->int_field_put(_slot_offset, value);
3497 }
3498
3499 int java_lang_reflect_Field::modifiers(oop field) {
3500 return field->int_field(_modifiers_offset);
3501 }
3502
3503 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3504 field->int_field_put(_modifiers_offset, value);
3505 }
3506
3507 void java_lang_reflect_Field::set_trusted_final(oop field) {
3508 field->bool_field_put(_trusted_final_offset, true);
3509 }
3510
3511 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3512 field->obj_field_put(_signature_offset, value);
3513 }
3514
3515 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3516 field->obj_field_put(_annotations_offset, value);
3517 }
3518
3519 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3520 // Allocate java.lang.reflect.RecordComponent instance
3521 HandleMark hm(THREAD);
3522 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3523 assert(ik != nullptr, "must be loaded");
3524 ik->initialize(CHECK_NULL);
3525
3526 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3527
3528 Handle decl_class(THREAD, holder->java_mirror());
3529 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3530
3531 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3532 oop component_name = StringTable::intern(name, CHECK_NULL);
3533 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3534
3535 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3536 Handle component_type_h =
3537 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3538 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3539
3540 Method* accessor_method = nullptr;
3541 {
3542 // Prepend "()" to type to create the full method signature.
3543 ResourceMark rm(THREAD);
3544 int sig_len = type->utf8_length() + 3; // "()" and null char
3545 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3546 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3547 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3548 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3549 }
3550
3551 if (accessor_method != nullptr) {
3552 methodHandle method(THREAD, accessor_method);
3553 oop m = Reflection::new_method(method, false, CHECK_NULL);
3554 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3555 } else {
3556 java_lang_reflect_RecordComponent::set_accessor(element(), nullptr);
3557 }
3558
3559 int sig_index = component->generic_signature_index();
3560 if (sig_index > 0) {
3561 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3562 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3563 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3564 } else {
3565 java_lang_reflect_RecordComponent::set_signature(element(), nullptr);
3566 }
3567
3568 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3569 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3570
3571 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3572 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3573
3574 return element();
3575 }
3576
3577 int reflect_ConstantPool::_oop_offset;
3578
3579 #define CONSTANTPOOL_FIELDS_DO(macro) \
3580 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3581
3582 void reflect_ConstantPool::compute_offsets() {
3583 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3584 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3585 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3586 }
3587
3588 #if INCLUDE_CDS
3589 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3590 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3591 }
3592 #endif
3593
3594 int java_lang_reflect_Parameter::_name_offset;
3595 int java_lang_reflect_Parameter::_modifiers_offset;
3596 int java_lang_reflect_Parameter::_index_offset;
3597 int java_lang_reflect_Parameter::_executable_offset;
3598
3599 #define PARAMETER_FIELDS_DO(macro) \
3600 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3601 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3602 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3603 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3604
3605 void java_lang_reflect_Parameter::compute_offsets() {
3606 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3607 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3608 }
3609
3610 #if INCLUDE_CDS
3611 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3612 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3613 }
3614 #endif
3615
3616 Handle java_lang_reflect_Parameter::create(TRAPS) {
3617 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3618 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3619 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3620 InstanceKlass* ik = InstanceKlass::cast(k);
3621 // Ensure it is initialized
3622 ik->initialize(CHECK_NH);
3623 return ik->allocate_instance_handle(THREAD);
3624 }
3625
3626 oop java_lang_reflect_Parameter::name(oop param) {
3627 return param->obj_field(_name_offset);
3628 }
3629
3630 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3631 param->obj_field_put(_name_offset, value);
3632 }
3633
3634 int java_lang_reflect_Parameter::modifiers(oop param) {
3635 return param->int_field(_modifiers_offset);
3636 }
3637
3638 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3639 param->int_field_put(_modifiers_offset, value);
3640 }
3641
3642 int java_lang_reflect_Parameter::index(oop param) {
3643 return param->int_field(_index_offset);
3644 }
3645
3646 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3647 param->int_field_put(_index_offset, value);
3648 }
3649
3650 oop java_lang_reflect_Parameter::executable(oop param) {
3651 return param->obj_field(_executable_offset);
3652 }
3653
3654 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3655 param->obj_field_put(_executable_offset, value);
3656 }
3657
3658 // java_lang_Module
3659
3660 int java_lang_Module::_loader_offset;
3661 int java_lang_Module::_name_offset;
3662 int java_lang_Module::_module_entry_offset;
3663
3664 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3665 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3666 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3667 vmSymbols::java_lang_module_init_signature(),
3668 loader, module_name, CHECK_NH);
3669 }
3670
3671 #define MODULE_FIELDS_DO(macro) \
3672 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3673 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3674
3675 void java_lang_Module::compute_offsets() {
3676 InstanceKlass* k = vmClasses::Module_klass();
3677 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3678 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3679 }
3680
3681 #if INCLUDE_CDS
3682 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3683 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3684 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3685 }
3686 #endif
3687
3688 oop java_lang_Module::loader(oop module) {
3689 return module->obj_field(_loader_offset);
3690 }
3691
3692 void java_lang_Module::set_loader(oop module, oop value) {
3693 module->obj_field_put(_loader_offset, value);
3694 }
3695
3696 oop java_lang_Module::name(oop module) {
3697 return module->obj_field(_name_offset);
3698 }
3699
3700 void java_lang_Module::set_name(oop module, oop value) {
3701 module->obj_field_put(_name_offset, value);
3702 }
3703
3704 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3705 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3706 assert(module != nullptr, "module can't be null");
3707 assert(oopDesc::is_oop(module), "module must be oop");
3708
3709 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3710 return module_entry;
3711 }
3712
3713 ModuleEntry* java_lang_Module::module_entry(oop module) {
3714 ModuleEntry* module_entry = module_entry_raw(module);
3715 if (module_entry == nullptr) {
3716 // If the inject field containing the ModuleEntry* is null then return the
3717 // class loader's unnamed module.
3718 oop loader = java_lang_Module::loader(module);
3719 Handle h_loader = Handle(Thread::current(), loader);
3720 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3721 return loader_cld->unnamed_module();
3722 }
3723 return module_entry;
3724 }
3725
3726 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3727 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3728 assert(module != nullptr, "module can't be null");
3729 assert(oopDesc::is_oop(module), "module must be oop");
3730 module->address_field_put(_module_entry_offset, (address)module_entry);
3731 }
3732
3733 Handle reflect_ConstantPool::create(TRAPS) {
3734 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3735 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3736 // Ensure it is initialized
3737 k->initialize(CHECK_NH);
3738 return k->allocate_instance_handle(THREAD);
3739 }
3740
3741
3742 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3743 oop mirror = value->pool_holder()->java_mirror();
3744 // Save the mirror to get back the constant pool.
3745 reflect->obj_field_put(_oop_offset, mirror);
3746 }
3747
3748 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3749
3750 oop mirror = reflect->obj_field(_oop_offset);
3751 Klass* k = java_lang_Class::as_Klass(mirror);
3752 assert(k->is_instance_klass(), "Must be");
3753
3754 // Get the constant pool back from the klass. Since class redefinition
3755 // merges the new constant pool into the old, this is essentially the
3756 // same constant pool as the original. If constant pool merging is
3757 // no longer done in the future, this will have to change to save
3758 // the original.
3759 return InstanceKlass::cast(k)->constants();
3760 }
3761
3762
3763 // Support for java_lang_ref_Reference
3764
3765 bool java_lang_ref_Reference::_offsets_initialized;
3766
3767 int java_lang_ref_Reference::_referent_offset;
3768 int java_lang_ref_Reference::_queue_offset;
3769 int java_lang_ref_Reference::_next_offset;
3770 int java_lang_ref_Reference::_discovered_offset;
3771
3772 #define REFERENCE_FIELDS_DO(macro) \
3773 macro(_referent_offset, k, "referent", object_signature, false); \
3774 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3775 macro(_next_offset, k, "next", reference_signature, false); \
3776 macro(_discovered_offset, k, "discovered", reference_signature, false);
3777
3778 void java_lang_ref_Reference::compute_offsets() {
3779 if (_offsets_initialized) {
3780 return;
3781 }
3782 _offsets_initialized = true;
3783 InstanceKlass* k = vmClasses::Reference_klass();
3784 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3785 }
3786
3787 #if INCLUDE_CDS
3788 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3789 f->do_bool(&_offsets_initialized);
3790 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3791 }
3792 #endif
3793
3794 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3795 assert(obj != nullptr, "sanity");
3796 if (offset != _referent_offset) {
3797 return false;
3798 }
3799
3800 Klass* k = obj->klass();
3801 if (!k->is_instance_klass()) {
3802 return false;
3803 }
3804
3805 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3806 bool is_reference = ik->reference_type() != REF_NONE;
3807 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3808 return is_reference;
3809 }
3810
3811 int java_lang_boxing_object::_value_offset;
3812 int java_lang_boxing_object::_long_value_offset;
3813
3814 #define BOXING_FIELDS_DO(macro) \
3815 macro(_value_offset, integerKlass, "value", int_signature, false); \
3816 macro(_long_value_offset, longKlass, "value", long_signature, false);
3817
3818 void java_lang_boxing_object::compute_offsets() {
3819 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3820 InstanceKlass* longKlass = vmClasses::Long_klass();
3821 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3822 }
3823
3824 #if INCLUDE_CDS
3825 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3826 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3827 }
3828 #endif
3829
3830 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3831 Klass* k = vmClasses::box_klass(type);
3832 if (k == nullptr) return nullptr;
3833 InstanceKlass* ik = InstanceKlass::cast(k);
3834 if (!ik->is_initialized()) {
3835 ik->initialize(CHECK_NULL);
3836 }
3837 return ik->allocate_instance(THREAD);
3838 }
3839
3840
3841 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3842 oop box = initialize_and_allocate(type, CHECK_NULL);
3843 if (box == nullptr) return nullptr;
3844 switch (type) {
3845 case T_BOOLEAN:
3846 box->bool_field_put(_value_offset, value->z);
3847 break;
3848 case T_CHAR:
3849 box->char_field_put(_value_offset, value->c);
3850 break;
3851 case T_FLOAT:
3852 box->float_field_put(_value_offset, value->f);
3853 break;
3854 case T_DOUBLE:
3855 box->double_field_put(_long_value_offset, value->d);
3856 break;
3857 case T_BYTE:
3858 box->byte_field_put(_value_offset, value->b);
3859 break;
3860 case T_SHORT:
3861 box->short_field_put(_value_offset, value->s);
3862 break;
3863 case T_INT:
3864 box->int_field_put(_value_offset, value->i);
3865 break;
3866 case T_LONG:
3867 box->long_field_put(_long_value_offset, value->j);
3868 break;
3869 default:
3870 return nullptr;
3871 }
3872 return box;
3873 }
3874
3875
3876 BasicType java_lang_boxing_object::basic_type(oop box) {
3877 if (box == nullptr) return T_ILLEGAL;
3878 BasicType type = vmClasses::box_klass_type(box->klass());
3879 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3880 return T_ILLEGAL;
3881 return type;
3882 }
3883
3884
3885 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3886 BasicType type = vmClasses::box_klass_type(box->klass());
3887 switch (type) {
3888 case T_BOOLEAN:
3889 value->z = box->bool_field(_value_offset);
3890 break;
3891 case T_CHAR:
3892 value->c = box->char_field(_value_offset);
3893 break;
3894 case T_FLOAT:
3895 value->f = box->float_field(_value_offset);
3896 break;
3897 case T_DOUBLE:
3898 value->d = box->double_field(_long_value_offset);
3899 break;
3900 case T_BYTE:
3901 value->b = box->byte_field(_value_offset);
3902 break;
3903 case T_SHORT:
3904 value->s = box->short_field(_value_offset);
3905 break;
3906 case T_INT:
3907 value->i = box->int_field(_value_offset);
3908 break;
3909 case T_LONG:
3910 value->j = box->long_field(_long_value_offset);
3911 break;
3912 default:
3913 return T_ILLEGAL;
3914 } // end switch
3915 return type;
3916 }
3917
3918
3919 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3920 BasicType type = vmClasses::box_klass_type(box->klass());
3921 switch (type) {
3922 case T_BOOLEAN:
3923 box->bool_field_put(_value_offset, value->z);
3924 break;
3925 case T_CHAR:
3926 box->char_field_put(_value_offset, value->c);
3927 break;
3928 case T_FLOAT:
3929 box->float_field_put(_value_offset, value->f);
3930 break;
3931 case T_DOUBLE:
3932 box->double_field_put(_long_value_offset, value->d);
3933 break;
3934 case T_BYTE:
3935 box->byte_field_put(_value_offset, value->b);
3936 break;
3937 case T_SHORT:
3938 box->short_field_put(_value_offset, value->s);
3939 break;
3940 case T_INT:
3941 box->int_field_put(_value_offset, value->i);
3942 break;
3943 case T_LONG:
3944 box->long_field_put(_long_value_offset, value->j);
3945 break;
3946 default:
3947 return T_ILLEGAL;
3948 } // end switch
3949 return type;
3950 }
3951
3952
3953 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3954 switch (type) {
3955 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3956 case T_CHAR: st->print("%d", value->c); break;
3957 case T_BYTE: st->print("%d", value->b); break;
3958 case T_SHORT: st->print("%d", value->s); break;
3959 case T_INT: st->print("%d", value->i); break;
3960 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3961 case T_FLOAT: st->print("%f", value->f); break;
3962 case T_DOUBLE: st->print("%lf", value->d); break;
3963 default: st->print("type %d?", type); break;
3964 }
3965 }
3966
3967
3968 // Support for java_lang_ref_SoftReference
3969 //
3970
3971 int java_lang_ref_SoftReference::_timestamp_offset;
3972 int java_lang_ref_SoftReference::_static_clock_offset;
3973
3974 #define SOFTREFERENCE_FIELDS_DO(macro) \
3975 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3976 macro(_static_clock_offset, k, "clock", long_signature, true)
3977
3978 void java_lang_ref_SoftReference::compute_offsets() {
3979 InstanceKlass* k = vmClasses::SoftReference_klass();
3980 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3981 }
3982
3983 #if INCLUDE_CDS
3984 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3985 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3986 }
3987 #endif
3988
3989 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3990 return ref->long_field(_timestamp_offset);
3991 }
3992
3993 jlong java_lang_ref_SoftReference::clock() {
3994 InstanceKlass* ik = vmClasses::SoftReference_klass();
3995 oop base = ik->static_field_base_raw();
3996 return base->long_field(_static_clock_offset);
3997 }
3998
3999 void java_lang_ref_SoftReference::set_clock(jlong value) {
4000 InstanceKlass* ik = vmClasses::SoftReference_klass();
4001 oop base = ik->static_field_base_raw();
4002 base->long_field_put(_static_clock_offset, value);
4003 }
4004
4005 // Support for java_lang_invoke_DirectMethodHandle
4006
4007 int java_lang_invoke_DirectMethodHandle::_member_offset;
4008
4009 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4010 oop member_name = nullptr;
4011 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4012 "a DirectMethodHandle oop is expected");
4013 return dmh->obj_field(_member_offset);
4014 }
4015
4016 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4017 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4018
4019 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4020 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4021 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4022 }
4023
4024 #if INCLUDE_CDS
4025 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4026 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4027 }
4028 #endif
4029
4030 // Support for java_lang_invoke_MethodHandle
4031
4032 int java_lang_invoke_MethodHandle::_type_offset;
4033 int java_lang_invoke_MethodHandle::_form_offset;
4034
4035 int java_lang_invoke_MemberName::_clazz_offset;
4036 int java_lang_invoke_MemberName::_name_offset;
4037 int java_lang_invoke_MemberName::_type_offset;
4038 int java_lang_invoke_MemberName::_flags_offset;
4039 int java_lang_invoke_MemberName::_method_offset;
4040 int java_lang_invoke_MemberName::_vmindex_offset;
4041
4042 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4043 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4044
4045 int java_lang_invoke_LambdaForm::_vmentry_offset;
4046
4047 #define METHODHANDLE_FIELDS_DO(macro) \
4048 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4049 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4050
4051 void java_lang_invoke_MethodHandle::compute_offsets() {
4052 InstanceKlass* k = vmClasses::MethodHandle_klass();
4053 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4054 }
4055
4056 #if INCLUDE_CDS
4057 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4058 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4059 }
4060 #endif
4061
4062 #define MEMBERNAME_FIELDS_DO(macro) \
4063 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4064 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4065 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4066 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4067 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4068
4069 void java_lang_invoke_MemberName::compute_offsets() {
4070 InstanceKlass* k = vmClasses::MemberName_klass();
4071 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4072 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4073 }
4074
4075 #if INCLUDE_CDS
4076 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4077 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4078 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4079 }
4080 #endif
4081
4082 #define RESOLVEDMETHOD_FIELDS_DO(macro) \
4083 macro(_vmholder_offset, k, "vmholder", class_signature, false)
4084
4085 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4086 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4087 assert(k != nullptr, "jdk mismatch");
4088 RESOLVEDMETHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4089 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4090 }
4091
4092 #if INCLUDE_CDS
4093 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4094 RESOLVEDMETHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4095 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4096 }
4097 #endif
4098
4099 #define LAMBDAFORM_FIELDS_DO(macro) \
4100 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4101
4102 void java_lang_invoke_LambdaForm::compute_offsets() {
4103 InstanceKlass* k = vmClasses::LambdaForm_klass();
4104 assert (k != nullptr, "jdk mismatch");
4105 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4106 }
4107
4108 #if INCLUDE_CDS
4109 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4110 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4111 }
4112 #endif
4113
4114 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4115 return obj != nullptr && is_subclass(obj->klass());
4116 }
4117
4118 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4119 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4120
4121 #define NEP_FIELDS_DO(macro) \
4122 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4123 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4124
4125 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4126 return obj != nullptr && is_subclass(obj->klass());
4127 }
4128
4129 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4130 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4131 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4132 }
4133
4134 #if INCLUDE_CDS
4135 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4136 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4137 }
4138 #endif
4139
4140 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4141 return entry->obj_field(_method_type_offset);
4142 }
4143
4144 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4145 return entry->long_field(_downcall_stub_address_offset);
4146 }
4147
4148 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4149 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4150 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4151 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4152 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4153 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4154 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4155
4156 #define ABIDescriptor_FIELDS_DO(macro) \
4157 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4158 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4159 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4160 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4161 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4162 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4163 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4164
4165 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4166 return obj != nullptr && is_subclass(obj->klass());
4167 }
4168
4169 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4170 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4171 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4172 }
4173
4174 #if INCLUDE_CDS
4175 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4176 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4177 }
4178 #endif
4179
4180 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4181 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4182 }
4183
4184 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4185 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4186 }
4187
4188 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4189 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4190 }
4191
4192 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4193 return entry->int_field(_stackAlignment_offset);
4194 }
4195
4196 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4197 return entry->int_field(_shadowSpace_offset);
4198 }
4199
4200 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4201 return entry->obj_field(_scratch1_offset);
4202 }
4203
4204 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4205 return entry->obj_field(_scratch2_offset);
4206 }
4207
4208 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4209 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4210 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4211 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4212
4213 #define VMStorage_FIELDS_DO(macro) \
4214 macro(_type_offset, k, "type", byte_signature, false); \
4215 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4216 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4217 macro(_debugName_offset, k, "debugName", string_signature, false); \
4218
4219 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4220 return obj != nullptr && is_subclass(obj->klass());
4221 }
4222
4223 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4224 InstanceKlass* k = vmClasses::VMStorage_klass();
4225 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4226 }
4227
4228 #if INCLUDE_CDS
4229 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4230 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4231 }
4232 #endif
4233
4234 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4235 return entry->byte_field(_type_offset);
4236 }
4237
4238 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4239 return entry->int_field(_indexOrOffset_offset);
4240 }
4241
4242 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4243 return entry->short_field(_segmentMaskOrSize_offset);
4244 }
4245
4246 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4247 return entry->obj_field(_debugName_offset);
4248 }
4249
4250 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4251 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4252
4253 #define CallConv_FIELDS_DO(macro) \
4254 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4255 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4256
4257 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4258 return obj != nullptr && is_subclass(obj->klass());
4259 }
4260
4261 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4262 InstanceKlass* k = vmClasses::CallConv_klass();
4263 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4264 }
4265
4266 #if INCLUDE_CDS
4267 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4268 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4269 }
4270 #endif
4271
4272 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4273 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4274 }
4275
4276 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4277 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4278 }
4279
4280 oop java_lang_invoke_MethodHandle::type(oop mh) {
4281 return mh->obj_field(_type_offset);
4282 }
4283
4284 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4285 mh->obj_field_put(_type_offset, mtype);
4286 }
4287
4288 oop java_lang_invoke_MethodHandle::form(oop mh) {
4289 assert(_form_offset != 0, "");
4290 return mh->obj_field(_form_offset);
4291 }
4292
4293 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4294 assert(_form_offset != 0, "");
4295 mh->obj_field_put(_form_offset, lform);
4296 }
4297
4298 /// MemberName accessors
4299
4300 oop java_lang_invoke_MemberName::clazz(oop mname) {
4301 assert(is_instance(mname), "wrong type");
4302 return mname->obj_field(_clazz_offset);
4303 }
4304
4305 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4306 assert(is_instance(mname), "wrong type");
4307 mname->obj_field_put(_clazz_offset, clazz);
4308 }
4309
4310 oop java_lang_invoke_MemberName::name(oop mname) {
4311 assert(is_instance(mname), "wrong type");
4312 return mname->obj_field(_name_offset);
4313 }
4314
4315 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4316 assert(is_instance(mname), "wrong type");
4317 mname->obj_field_put(_name_offset, name);
4318 }
4319
4320 oop java_lang_invoke_MemberName::type(oop mname) {
4321 assert(is_instance(mname), "wrong type");
4322 return mname->obj_field(_type_offset);
4323 }
4324
4325 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4326 assert(is_instance(mname), "wrong type");
4327 mname->obj_field_put(_type_offset, type);
4328 }
4329
4330 int java_lang_invoke_MemberName::flags(oop mname) {
4331 assert(is_instance(mname), "wrong type");
4332 return mname->int_field(_flags_offset);
4333 }
4334
4335 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4336 assert(is_instance(mname), "wrong type");
4337 mname->int_field_put(_flags_offset, flags);
4338 }
4339
4340
4341 // Return vmtarget from ResolvedMethodName method field through indirection
4342 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4343 assert(is_instance(mname), "wrong type");
4344 oop method = mname->obj_field(_method_offset);
4345 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4346 }
4347
4348 bool java_lang_invoke_MemberName::is_method(oop mname) {
4349 assert(is_instance(mname), "must be MemberName");
4350 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4351 }
4352
4353 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4354 assert(is_instance(mname), "wrong type");
4355 mname->obj_field_put(_method_offset, resolved_method);
4356 }
4357
4358 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4359 assert(is_instance(mname), "wrong type");
4360 return (intptr_t) mname->address_field(_vmindex_offset);
4361 }
4362
4363 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4364 assert(is_instance(mname), "wrong type");
4365 mname->address_field_put(_vmindex_offset, (address) index);
4366 }
4367
4368
4369 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4370 assert(is_instance(resolved_method), "wrong type");
4371 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4372 assert(m->is_method(), "must be");
4373 return m;
4374 }
4375
4376 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4377 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4378 assert(is_instance(resolved_method), "wrong type");
4379 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4380 }
4381
4382 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4383 assert(is_instance(resolved_method), "wrong type");
4384 resolved_method->obj_field_put(_vmholder_offset, holder);
4385 }
4386
4387 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4388 const Method* method = m();
4389
4390 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4391 oop resolved_method = ResolvedMethodTable::find_method(method);
4392 if (resolved_method != nullptr) {
4393 return resolved_method;
4394 }
4395
4396 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4397 if (!k->is_initialized()) {
4398 k->initialize(CHECK_NULL);
4399 }
4400
4401 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4402
4403 NoSafepointVerifier nsv;
4404
4405 if (method->is_old()) {
4406 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4407 method->get_new_method();
4408 }
4409
4410 InstanceKlass* holder = method->method_holder();
4411
4412 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4413 // Add a reference to the loader (actually mirror because hidden classes may not have
4414 // distinct loaders) to ensure the metadata is kept alive.
4415 // This mirror may be different than the one in clazz field.
4416 set_vmholder(new_resolved_method, holder->java_mirror());
4417
4418 // Set flag in class to indicate this InstanceKlass has entries in the table
4419 // to avoid walking table during redefinition if none of the redefined classes
4420 // have any membernames in the table.
4421 holder->set_has_resolved_methods();
4422
4423 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4424 }
4425
4426 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4427 assert(is_instance(lform), "wrong type");
4428 return lform->obj_field(_vmentry_offset);
4429 }
4430
4431
4432 // Support for java_lang_invoke_MethodType
4433
4434 int java_lang_invoke_MethodType::_rtype_offset;
4435 int java_lang_invoke_MethodType::_ptypes_offset;
4436
4437 #define METHODTYPE_FIELDS_DO(macro) \
4438 macro(_rtype_offset, k, "rtype", class_signature, false); \
4439 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4440
4441 void java_lang_invoke_MethodType::compute_offsets() {
4442 InstanceKlass* k = vmClasses::MethodType_klass();
4443 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4444 }
4445
4446 #if INCLUDE_CDS
4447 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4448 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4449 }
4450 #endif
4451
4452 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4453 st->print("(");
4454 objArrayOop pts = ptypes(mt);
4455 if (pts != nullptr) {
4456 for (int i = 0, limit = pts->length(); i < limit; i++) {
4457 java_lang_Class::print_signature(pts->obj_at(i), st);
4458 }
4459 } else {
4460 st->print("null");
4461 }
4462 st->print(")");
4463 oop rt = rtype(mt);
4464 if (rt != nullptr) {
4465 java_lang_Class::print_signature(rt, st);
4466 } else {
4467 st->print("null");
4468 }
4469 }
4470
4471 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4472 ResourceMark rm;
4473 stringStream buffer(128);
4474 print_signature(mt, &buffer);
4475 const char* sigstr = buffer.base();
4476 int siglen = (int) buffer.size();
4477 Symbol *name;
4478 if (!intern_if_not_found) {
4479 name = SymbolTable::probe(sigstr, siglen);
4480 } else {
4481 name = SymbolTable::new_symbol(sigstr, siglen);
4482 }
4483 return name;
4484 }
4485
4486 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4487 if (mt1 == mt2)
4488 return true;
4489 if (rtype(mt1) != rtype(mt2))
4490 return false;
4491 if (ptype_count(mt1) != ptype_count(mt2))
4492 return false;
4493 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4494 if (ptype(mt1, i) != ptype(mt2, i))
4495 return false;
4496 }
4497 return true;
4498 }
4499
4500 oop java_lang_invoke_MethodType::rtype(oop mt) {
4501 assert(is_instance(mt), "must be a MethodType");
4502 return mt->obj_field(_rtype_offset);
4503 }
4504
4505 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4506 assert(is_instance(mt), "must be a MethodType");
4507 return (objArrayOop) mt->obj_field(_ptypes_offset);
4508 }
4509
4510 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4511 return ptypes(mt)->obj_at(idx);
4512 }
4513
4514 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4515 return ptypes(mt)->length();
4516 }
4517
4518 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4519 objArrayOop pts = ptypes(mt);
4520 int count = pts->length();
4521 int slots = 0;
4522 for (int i = 0; i < count; i++) {
4523 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4524 slots += type2size[bt];
4525 }
4526 return slots;
4527 }
4528
4529 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4530 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4531 return type2size[bt];
4532 }
4533
4534
4535 // Support for java_lang_invoke_CallSite
4536
4537 int java_lang_invoke_CallSite::_target_offset;
4538 int java_lang_invoke_CallSite::_context_offset;
4539
4540 #define CALLSITE_FIELDS_DO(macro) \
4541 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4542 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4543
4544 void java_lang_invoke_CallSite::compute_offsets() {
4545 InstanceKlass* k = vmClasses::CallSite_klass();
4546 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4547 }
4548
4549 #if INCLUDE_CDS
4550 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4551 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4552 }
4553 #endif
4554
4555 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4556 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4557
4558 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4559 return dep_oop;
4560 }
4561
4562 // Support for java_lang_invoke_ConstantCallSite
4563
4564 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4565
4566 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4567 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4568
4569 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4570 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4571 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4572 }
4573
4574 #if INCLUDE_CDS
4575 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4576 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4577 }
4578 #endif
4579
4580 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4581
4582 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4583 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4584
4585 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4586 InstanceKlass* k = vmClasses::Context_klass();
4587 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4588 }
4589
4590 #if INCLUDE_CDS
4591 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4592 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4593 }
4594 #endif
4595
4596 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4597 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4598 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4599 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4600 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4601 return dep_ctx;
4602 }
4603
4604 // Support for java_security_AccessControlContext
4605
4606 int java_security_AccessControlContext::_context_offset;
4607 int java_security_AccessControlContext::_privilegedContext_offset;
4608 int java_security_AccessControlContext::_isPrivileged_offset;
4609 int java_security_AccessControlContext::_isAuthorized_offset;
4610
4611 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4612 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4613 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4614 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4615 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4616
4617 void java_security_AccessControlContext::compute_offsets() {
4618 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4619 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4620 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4621 }
4622
4623 #if INCLUDE_CDS
4624 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4625 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4626 }
4627 #endif
4628
4629 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4630 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4631 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4632 // Ensure klass is initialized
4633 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4634 // Allocate result
4635 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4636 // Fill in values
4637 result->obj_field_put(_context_offset, context());
4638 result->obj_field_put(_privilegedContext_offset, privileged_context());
4639 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4640 result->bool_field_put(_isAuthorized_offset, true);
4641 return result;
4642 }
4643
4644
4645 // Support for java_lang_ClassLoader
4646
4647 int java_lang_ClassLoader::_loader_data_offset;
4648 int java_lang_ClassLoader::_parallelCapable_offset;
4649 int java_lang_ClassLoader::_name_offset;
4650 int java_lang_ClassLoader::_nameAndId_offset;
4651 int java_lang_ClassLoader::_unnamedModule_offset;
4652 int java_lang_ClassLoader::_parent_offset;
4653
4654 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4655 assert(loader != nullptr, "loader must not be null");
4656 assert(oopDesc::is_oop(loader), "loader must be oop");
4657 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4658 }
4659
4660 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4661 assert(loader != nullptr, "loader must not be null");
4662 assert(oopDesc::is_oop(loader), "loader must be oop");
4663 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4664 }
4665
4666 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4667 assert(loader != nullptr, "loader must not be null");
4668 assert(oopDesc::is_oop(loader), "loader must be oop");
4669 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4670 }
4671
4672 #define CLASSLOADER_FIELDS_DO(macro) \
4673 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4674 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4675 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4676 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4677 macro(_parent_offset, k1, "parent", classloader_signature, false)
4678
4679 void java_lang_ClassLoader::compute_offsets() {
4680 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4681 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4682
4683 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4684 }
4685
4686 #if INCLUDE_CDS
4687 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4688 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4689 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4690 }
4691 #endif
4692
4693 oop java_lang_ClassLoader::parent(oop loader) {
4694 assert(is_instance(loader), "loader must be oop");
4695 return loader->obj_field(_parent_offset);
4696 }
4697
4698 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4699 assert(is_instance(loader), "loader must be oop");
4700 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4701 }
4702
4703 // Returns the name field of this class loader. If the name field has not
4704 // been set, null will be returned.
4705 oop java_lang_ClassLoader::name(oop loader) {
4706 assert(is_instance(loader), "loader must be oop");
4707 return loader->obj_field(_name_offset);
4708 }
4709
4710 // Returns the nameAndId field of this class loader. The format is
4711 // as follows:
4712 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4713 // If the defining loader has no name then <qualified-class-name> @<id>
4714 // If built-in loader, then omit '@<id>' as there is only one instance.
4715 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4716 oop java_lang_ClassLoader::nameAndId(oop loader) {
4717 assert(is_instance(loader), "loader must be oop");
4718 return loader->obj_field(_nameAndId_offset);
4719 }
4720
4721 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4722 assert(is_instance(loader), "loader must be oop");
4723 assert(cl == nullptr || is_instance(cl), "cl argument must be oop");
4724 oop acl = loader;
4725 debug_only(jint loop_count = 0);
4726 // This loop taken verbatim from ClassLoader.java:
4727 do {
4728 acl = parent(acl);
4729 if (cl == acl) {
4730 return true;
4731 }
4732 assert(++loop_count > 0, "loop_count overflow");
4733 } while (acl != nullptr);
4734 return false;
4735 }
4736
4737 bool java_lang_ClassLoader::is_instance(oop obj) {
4738 return obj != nullptr && is_subclass(obj->klass());
4739 }
4740
4741
4742 // For class loader classes, parallelCapable defined
4743 // based on non-null field
4744 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4745 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4746 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4747 return (class_loader->obj_field(_parallelCapable_offset) != nullptr);
4748 }
4749
4750 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4751 // Fix for 4474172; see evaluation for more details
4752 loader = non_reflection_class_loader(loader);
4753
4754 oop cl = SystemDictionary::java_system_loader();
4755 while(cl != nullptr) {
4756 if (cl == loader) return true;
4757 cl = parent(cl);
4758 }
4759 return false;
4760 }
4761
4762 // Return true if this is one of the class loaders associated with
4763 // the generated bytecodes for serialization constructor returned
4764 // by sun.reflect.ReflectionFactory::newConstructorForSerialization
4765 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4766 if (loader != nullptr) {
4767 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4768 // This might be null in non-1.4 JDKs
4769 return (delegating_cl_class != nullptr && loader->is_a(delegating_cl_class));
4770 }
4771 return false;
4772 }
4773
4774 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4775 // See whether this is one of the class loaders associated with
4776 // the generated bytecodes for reflection, and if so, "magically"
4777 // delegate to its parent to prevent class loading from occurring
4778 // in places where applications using reflection didn't expect it.
4779 if (is_reflection_class_loader(loader)) {
4780 return parent(loader);
4781 }
4782 return loader;
4783 }
4784
4785 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4786 assert(is_instance(loader), "loader must be oop");
4787 return loader->obj_field(_unnamedModule_offset);
4788 }
4789
4790 // Support for java_lang_System
4791 //
4792
4793 int java_lang_System::_static_in_offset;
4794 int java_lang_System::_static_out_offset;
4795 int java_lang_System::_static_err_offset;
4796 int java_lang_System::_static_security_offset;
4797 int java_lang_System::_static_allow_security_offset;
4798 int java_lang_System::_static_never_offset;
4799
4800 #define SYSTEM_FIELDS_DO(macro) \
4801 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4802 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4803 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4804 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4805 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4806 macro(_static_never_offset, k, "NEVER", int_signature, true)
4807
4808 void java_lang_System::compute_offsets() {
4809 InstanceKlass* k = vmClasses::System_klass();
4810 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4811 }
4812
4813 // This field tells us that a security manager can never be installed so we
4814 // can completely skip populating the ProtectionDomainCacheTable.
4815 bool java_lang_System::allow_security_manager() {
4816 static int initialized = false;
4817 static bool allowed = true; // default
4818 if (!initialized) {
4819 oop base = vmClasses::System_klass()->static_field_base_raw();
4820 int never = base->int_field(_static_never_offset);
4821 allowed = (base->int_field(_static_allow_security_offset) != never);
4822 initialized = true;
4823 }
4824 return allowed;
4825 }
4826
4827 // This field tells us that a security manager is installed.
4828 bool java_lang_System::has_security_manager() {
4829 oop base = vmClasses::System_klass()->static_field_base_raw();
4830 return base->obj_field(_static_security_offset) != nullptr;
4831 }
4832
4833 #if INCLUDE_CDS
4834 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4835 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4836 }
4837 #endif
4838
4839 // Support for jdk_internal_misc_UnsafeConstants
4840 //
4841 class UnsafeConstantsFixup : public FieldClosure {
4842 private:
4843 int _address_size;
4844 int _page_size;
4845 bool _big_endian;
4846 bool _use_unaligned_access;
4847 int _data_cache_line_flush_size;
4848 public:
4849 UnsafeConstantsFixup() {
4850 // round up values for all static final fields
4851 _address_size = sizeof(void*);
4852 _page_size = AIX_ONLY(sysconf(_SC_PAGESIZE)) NOT_AIX((int)os::vm_page_size());
4853 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4854 _use_unaligned_access = UseUnalignedAccesses;
4855 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4856 }
4857
4858 void do_field(fieldDescriptor* fd) {
4859 oop mirror = fd->field_holder()->java_mirror();
4860 assert(mirror != nullptr, "UnsafeConstants must have mirror already");
4861 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4862 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4863 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4864 if (fd->name() == vmSymbols::address_size_name()) {
4865 mirror->int_field_put(fd->offset(), _address_size);
4866 } else if (fd->name() == vmSymbols::page_size_name()) {
4867 mirror->int_field_put(fd->offset(), _page_size);
4868 } else if (fd->name() == vmSymbols::big_endian_name()) {
4869 mirror->bool_field_put(fd->offset(), _big_endian);
4870 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4871 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4872 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4873 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4874 } else {
4875 assert(false, "unexpected UnsafeConstants field");
4876 }
4877 }
4878 };
4879
4880 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4881 UnsafeConstantsFixup fixup;
4882 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4883 }
4884
4885
4886 // java_lang_StackTraceElement
4887
4888 int java_lang_StackTraceElement::_methodName_offset;
4889 int java_lang_StackTraceElement::_fileName_offset;
4890 int java_lang_StackTraceElement::_lineNumber_offset;
4891 int java_lang_StackTraceElement::_moduleName_offset;
4892 int java_lang_StackTraceElement::_moduleVersion_offset;
4893 int java_lang_StackTraceElement::_classLoaderName_offset;
4894 int java_lang_StackTraceElement::_declaringClass_offset;
4895 int java_lang_StackTraceElement::_declaringClassObject_offset;
4896
4897 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4898 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4899 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4900 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4901 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4902 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4903 macro(_methodName_offset, k, "methodName", string_signature, false); \
4904 macro(_fileName_offset, k, "fileName", string_signature, false); \
4905 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4906
4907 // Support for java_lang_StackTraceElement
4908 void java_lang_StackTraceElement::compute_offsets() {
4909 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4910 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4911 }
4912
4913 #if INCLUDE_CDS
4914 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4915 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4916 }
4917 #endif
4918
4919 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4920 element->obj_field_put(_fileName_offset, value);
4921 }
4922
4923 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4924 element->obj_field_put(_declaringClass_offset, value);
4925 }
4926
4927 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4928 element->obj_field_put(_methodName_offset, value);
4929 }
4930
4931 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4932 element->int_field_put(_lineNumber_offset, value);
4933 }
4934
4935 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4936 element->obj_field_put(_moduleName_offset, value);
4937 }
4938
4939 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4940 element->obj_field_put(_moduleVersion_offset, value);
4941 }
4942
4943 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4944 element->obj_field_put(_classLoaderName_offset, value);
4945 }
4946
4947 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4948 element->obj_field_put(_declaringClassObject_offset, value);
4949 }
4950
4951
4952 // java_lang_AssertionStatusDirectives
4953
4954 int java_lang_AssertionStatusDirectives::_classes_offset;
4955 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4956 int java_lang_AssertionStatusDirectives::_packages_offset;
4957 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4958 int java_lang_AssertionStatusDirectives::_deflt_offset;
4959
4960 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4961 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4962 macro(_classes_offset, k, "classes", string_array_signature, false); \
4963 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4964 macro(_packages_offset, k, "packages", string_array_signature, false); \
4965 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4966 macro(_deflt_offset, k, "deflt", bool_signature, false)
4967
4968 void java_lang_AssertionStatusDirectives::compute_offsets() {
4969 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4970 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4971 }
4972
4973 #if INCLUDE_CDS
4974 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4975 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4976 }
4977 #endif
4978
4979 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4980 o->obj_field_put(_classes_offset, val);
4981 }
4982
4983 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4984 o->obj_field_put(_classEnabled_offset, val);
4985 }
4986
4987 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4988 o->obj_field_put(_packages_offset, val);
4989 }
4990
4991 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4992 o->obj_field_put(_packageEnabled_offset, val);
4993 }
4994
4995 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4996 o->bool_field_put(_deflt_offset, val);
4997 }
4998
4999 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5000
5001 #define AOS_FIELDS_DO(macro) \
5002 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5003
5004 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5005 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5006 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5007 }
5008
5009 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5010 assert(_owner_offset != 0, "Must be initialized");
5011 return obj->obj_field(_owner_offset);
5012 }
5013
5014 #if INCLUDE_CDS
5015 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5016 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5017 }
5018 #endif
5019
5020 int vector_VectorPayload::_payload_offset;
5021
5022 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5023 macro(_payload_offset, k, "payload", object_signature, false)
5024
5025 void vector_VectorPayload::compute_offsets() {
5026 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5027 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5028 }
5029
5030 #if INCLUDE_CDS
5031 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5032 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5033 }
5034 #endif
5035
5036 void vector_VectorPayload::set_payload(oop o, oop val) {
5037 o->obj_field_put(_payload_offset, val);
5038 }
5039
5040 bool vector_VectorPayload::is_instance(oop obj) {
5041 return obj != nullptr && is_subclass(obj->klass());
5042 }
5043
5044 int java_lang_Integer_IntegerCache::_static_cache_offset;
5045 int java_lang_Long_LongCache::_static_cache_offset;
5046 int java_lang_Character_CharacterCache::_static_cache_offset;
5047 int java_lang_Short_ShortCache::_static_cache_offset;
5048 int java_lang_Byte_ByteCache::_static_cache_offset;
5049
5050 #define INTEGER_CACHE_FIELDS_DO(macro) \
5051 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5052
5053 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5054 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5055 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5056 }
5057
5058 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5059 oop base = ik->static_field_base_raw();
5060 return objArrayOop(base->obj_field(_static_cache_offset));
5061 }
5062
5063 Symbol* java_lang_Integer_IntegerCache::symbol() {
5064 return vmSymbols::java_lang_Integer_IntegerCache();
5065 }
5066
5067 #if INCLUDE_CDS
5068 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5069 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5070 }
5071 #endif
5072 #undef INTEGER_CACHE_FIELDS_DO
5073
5074 jint java_lang_Integer::value(oop obj) {
5075 jvalue v;
5076 java_lang_boxing_object::get_value(obj, &v);
5077 return v.i;
5078 }
5079
5080 #define LONG_CACHE_FIELDS_DO(macro) \
5081 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5082
5083 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5084 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5085 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5086 }
5087
5088 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5089 oop base = ik->static_field_base_raw();
5090 return objArrayOop(base->obj_field(_static_cache_offset));
5091 }
5092
5093 Symbol* java_lang_Long_LongCache::symbol() {
5094 return vmSymbols::java_lang_Long_LongCache();
5095 }
5096
5097 #if INCLUDE_CDS
5098 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5099 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5100 }
5101 #endif
5102 #undef LONG_CACHE_FIELDS_DO
5103
5104 jlong java_lang_Long::value(oop obj) {
5105 jvalue v;
5106 java_lang_boxing_object::get_value(obj, &v);
5107 return v.j;
5108 }
5109
5110 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5111 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5112
5113 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5114 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5115 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5116 }
5117
5118 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5119 oop base = ik->static_field_base_raw();
5120 return objArrayOop(base->obj_field(_static_cache_offset));
5121 }
5122
5123 Symbol* java_lang_Character_CharacterCache::symbol() {
5124 return vmSymbols::java_lang_Character_CharacterCache();
5125 }
5126
5127 #if INCLUDE_CDS
5128 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5129 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5130 }
5131 #endif
5132 #undef CHARACTER_CACHE_FIELDS_DO
5133
5134 jchar java_lang_Character::value(oop obj) {
5135 jvalue v;
5136 java_lang_boxing_object::get_value(obj, &v);
5137 return v.c;
5138 }
5139
5140 #define SHORT_CACHE_FIELDS_DO(macro) \
5141 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5142
5143 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5144 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5145 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5146 }
5147
5148 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5149 oop base = ik->static_field_base_raw();
5150 return objArrayOop(base->obj_field(_static_cache_offset));
5151 }
5152
5153 Symbol* java_lang_Short_ShortCache::symbol() {
5154 return vmSymbols::java_lang_Short_ShortCache();
5155 }
5156
5157 #if INCLUDE_CDS
5158 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5159 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5160 }
5161 #endif
5162 #undef SHORT_CACHE_FIELDS_DO
5163
5164 jshort java_lang_Short::value(oop obj) {
5165 jvalue v;
5166 java_lang_boxing_object::get_value(obj, &v);
5167 return v.s;
5168 }
5169
5170 #define BYTE_CACHE_FIELDS_DO(macro) \
5171 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5172
5173 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5174 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5175 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5176 }
5177
5178 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5179 oop base = ik->static_field_base_raw();
5180 return objArrayOop(base->obj_field(_static_cache_offset));
5181 }
5182
5183 Symbol* java_lang_Byte_ByteCache::symbol() {
5184 return vmSymbols::java_lang_Byte_ByteCache();
5185 }
5186
5187 #if INCLUDE_CDS
5188 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5189 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5190 }
5191 #endif
5192 #undef BYTE_CACHE_FIELDS_DO
5193
5194 jbyte java_lang_Byte::value(oop obj) {
5195 jvalue v;
5196 java_lang_boxing_object::get_value(obj, &v);
5197 return v.b;
5198 }
5199
5200 int java_lang_Boolean::_static_TRUE_offset;
5201 int java_lang_Boolean::_static_FALSE_offset;
5202
5203 #define BOOLEAN_FIELDS_DO(macro) \
5204 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5205 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5206
5207
5208 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5209 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5210 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5211 }
5212
5213 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5214 oop base = ik->static_field_base_raw();
5215 return base->obj_field(_static_TRUE_offset);
5216 }
5217
5218 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5219 oop base = ik->static_field_base_raw();
5220 return base->obj_field(_static_FALSE_offset);
5221 }
5222
5223 Symbol* java_lang_Boolean::symbol() {
5224 return vmSymbols::java_lang_Boolean();
5225 }
5226
5227 #if INCLUDE_CDS
5228 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5229 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5230 }
5231 #endif
5232 #undef BOOLEAN_CACHE_FIELDS_DO
5233
5234 jboolean java_lang_Boolean::value(oop obj) {
5235 jvalue v;
5236 java_lang_boxing_object::get_value(obj, &v);
5237 return v.z;
5238 }
5239
5240 // java_lang_reflect_RecordComponent
5241
5242 int java_lang_reflect_RecordComponent::_clazz_offset;
5243 int java_lang_reflect_RecordComponent::_name_offset;
5244 int java_lang_reflect_RecordComponent::_type_offset;
5245 int java_lang_reflect_RecordComponent::_accessor_offset;
5246 int java_lang_reflect_RecordComponent::_signature_offset;
5247 int java_lang_reflect_RecordComponent::_annotations_offset;
5248 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5249
5250 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5251 macro(_clazz_offset, k, "clazz", class_signature, false); \
5252 macro(_name_offset, k, "name", string_signature, false); \
5253 macro(_type_offset, k, "type", class_signature, false); \
5254 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5255 macro(_signature_offset, k, "signature", string_signature, false); \
5256 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5257 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5258
5259 // Support for java_lang_reflect_RecordComponent
5260 void java_lang_reflect_RecordComponent::compute_offsets() {
5261 InstanceKlass* k = vmClasses::RecordComponent_klass();
5262 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5263 }
5264
5265 #if INCLUDE_CDS
5266 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5267 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5268 }
5269 #endif
5270
5271 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5272 element->obj_field_put(_clazz_offset, value);
5273 }
5274
5275 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5276 element->obj_field_put(_name_offset, value);
5277 }
5278
5279 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5280 element->obj_field_put(_type_offset, value);
5281 }
5282
5283 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5284 element->obj_field_put(_accessor_offset, value);
5285 }
5286
5287 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5288 element->obj_field_put(_signature_offset, value);
5289 }
5290
5291 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5292 element->obj_field_put(_annotations_offset, value);
5293 }
5294
5295 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5296 element->obj_field_put(_typeAnnotations_offset, value);
5297 }
5298
5299 // java_lang_InternalError
5300 int java_lang_InternalError::_during_unsafe_access_offset;
5301
5302 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5303 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5304 }
5305
5306 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5307 return internal_error->bool_field(_during_unsafe_access_offset);
5308 }
5309
5310 void java_lang_InternalError::compute_offsets() {
5311 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5312 }
5313
5314 #if INCLUDE_CDS
5315 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5316 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5317 }
5318 #endif
5319
5320 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5321 f(java_lang_Class) \
5322 f(java_lang_String) \
5323 f(java_lang_ref_Reference) \
5324 //end
5325
5326 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5327 f(java_lang_System) \
5328 f(java_lang_ClassLoader) \
5329 f(java_lang_Throwable) \
5330 f(java_lang_Thread) \
5331 f(java_lang_Thread_FieldHolder) \
5332 f(java_lang_Thread_Constants) \
5333 f(java_lang_ThreadGroup) \
5334 f(java_lang_VirtualThread) \
5335 f(java_lang_InternalError) \
5336 f(java_lang_AssertionStatusDirectives) \
5337 f(java_lang_ref_SoftReference) \
5338 f(java_lang_invoke_MethodHandle) \
5339 f(java_lang_invoke_DirectMethodHandle) \
5340 f(java_lang_invoke_MemberName) \
5341 f(java_lang_invoke_ResolvedMethodName) \
5342 f(java_lang_invoke_LambdaForm) \
5343 f(java_lang_invoke_MethodType) \
5344 f(java_lang_invoke_CallSite) \
5345 f(java_lang_invoke_ConstantCallSite) \
5346 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5347 f(java_security_AccessControlContext) \
5348 f(java_lang_reflect_AccessibleObject) \
5349 f(java_lang_reflect_Method) \
5350 f(java_lang_reflect_Constructor) \
5351 f(java_lang_reflect_Field) \
5352 f(java_lang_reflect_RecordComponent) \
5353 f(reflect_ConstantPool) \
5354 f(java_lang_reflect_Parameter) \
5355 f(java_lang_Module) \
5356 f(java_lang_StackTraceElement) \
5357 f(java_lang_ClassFrameInfo) \
5358 f(java_lang_StackFrameInfo) \
5359 f(java_lang_LiveStackFrameInfo) \
5360 f(jdk_internal_vm_ContinuationScope) \
5361 f(jdk_internal_vm_Continuation) \
5362 f(jdk_internal_vm_StackChunk) \
5363 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5364 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5365 f(jdk_internal_foreign_abi_ABIDescriptor) \
5366 f(jdk_internal_foreign_abi_VMStorage) \
5367 f(jdk_internal_foreign_abi_CallConv) \
5368 f(jdk_internal_misc_UnsafeConstants) \
5369 f(java_lang_boxing_object) \
5370 f(vector_VectorPayload) \
5371 //end
5372
5373 #define BASIC_JAVA_CLASSES_DO(f) \
5374 BASIC_JAVA_CLASSES_DO_PART1(f) \
5375 BASIC_JAVA_CLASSES_DO_PART2(f)
5376
5377 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5378
5379 // Compute field offsets of all the classes in this file
5380 void JavaClasses::compute_offsets() {
5381 if (CDSConfig::is_using_archive()) {
5382 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5383 JvmtiExport::has_early_class_hook_env()),
5384 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5385 // None of the classes used by the rest of this function can be replaced by
5386 // JVMTI ClassFileLoadHook.
5387 // We are safe to use the archived offsets, which have already been restored
5388 // by JavaClasses::serialize_offsets, without computing the offsets again.
5389 return;
5390 }
5391
5392 // We have already called the compute_offsets() of the
5393 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5394 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5395 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5396 }
5397
5398 #if INCLUDE_CDS
5399 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5400
5401 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5402 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5403 }
5404 #endif
5405
5406 #if INCLUDE_CDS_JAVA_HEAP
5407 bool JavaClasses::is_supported_for_archiving(oop obj) {
5408 Klass* klass = obj->klass();
5409
5410 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5411 #if 0
5412 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5413 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5414 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5415 // So for now we cannot not support these classes for archiving.
5416 //
5417 // These objects typically are not referenced by static fields, but rather by resolved
5418 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5419 klass == vmClasses::ResolvedMethodName_klass() ||
5420 klass == vmClasses::MemberName_klass() ||
5421 klass == vmClasses::Context_klass() ||
5422 #endif
5423 // It's problematic to archive Reference objects. One of the reasons is that
5424 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5425 klass->is_subclass_of(vmClasses::Reference_klass())) {
5426 return false;
5427 }
5428
5429 return true;
5430 }
5431 #endif
5432
5433 #ifndef PRODUCT
5434
5435 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5436
5437 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5438 const char* field_sig) {
5439 EXCEPTION_MARK;
5440 fieldDescriptor fd;
5441 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5442 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5443 InstanceKlass* ik = InstanceKlass::cast(k);
5444 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5445 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5446 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5447 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5448 return false;
5449 }
5450 if (fd.is_static()) {
5451 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5452 return false;
5453 }
5454 if (fd.offset() == deserialized_offset ) {
5455 return true;
5456 } else {
5457 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5458 klass_name, field_name, deserialized_offset, fd.offset());
5459 return false;
5460 }
5461 }
5462
5463 void JavaClasses::check_offsets() {
5464 bool valid = true;
5465
5466 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5467 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5468
5469 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5470 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5471
5472 // Boxed primitive objects (java_lang_boxing_object)
5473
5474 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5475 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5476 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5477 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5478 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5479 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5480 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5481 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5482
5483 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5484 }
5485
5486 #endif // PRODUCT
5487
5488 int InjectedField::compute_offset() {
5489 InstanceKlass* ik = InstanceKlass::cast(klass());
5490 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5491 if (!may_be_java && !fs.field_flags().is_injected()) {
5492 // Only look at injected fields
5493 continue;
5494 }
5495 if (fs.name() == name() && fs.signature() == signature()) {
5496 return fs.offset();
5497 }
5498 }
5499 ResourceMark rm;
5500 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)" : "");
5501 #ifndef PRODUCT
5502 ik->print();
5503 tty->print_cr("all fields:");
5504 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5505 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5506 }
5507 #endif //PRODUCT
5508 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5509 return -1;
5510 }
5511
5512 void javaClasses_init() {
5513 JavaClasses::compute_offsets();
5514 JavaClasses::check_offsets();
5515 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5516 }