1 /*
2 * Copyright (c) 1997, 2022, 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/heapShared.hpp"
29 #include "cds/metaspaceShared.hpp"
30 #include "classfile/altHashing.hpp"
31 #include "classfile/classLoaderData.inline.hpp"
32 #include "classfile/javaClasses.inline.hpp"
33 #include "classfile/javaClassesImpl.hpp"
34 #include "classfile/javaThreadStatus.hpp"
35 #include "classfile/moduleEntry.hpp"
36 #include "classfile/stringTable.hpp"
37 #include "classfile/symbolTable.hpp"
38 #include "classfile/systemDictionary.hpp"
39 #include "classfile/vmClasses.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/debugInfo.hpp"
42 #include "code/dependencyContext.hpp"
43 #include "code/pcDesc.hpp"
44 #include "gc/shared/collectedHeap.inline.hpp"
45 #include "interpreter/interpreter.hpp"
46 #include "interpreter/linkResolver.hpp"
47 #include "jvm.h"
48 #include "logging/log.hpp"
49 #include "logging/logStream.hpp"
50 #include "memory/oopFactory.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "oops/fieldStreams.inline.hpp"
54 #include "oops/flatArrayKlass.hpp"
55 #include "oops/inlineKlass.inline.hpp"
56 #include "oops/instanceKlass.inline.hpp"
57 #include "oops/instanceMirrorKlass.inline.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/growableArray.hpp"
91 #include "utilities/preserveException.hpp"
92 #include "utilities/utf8.hpp"
93 #if INCLUDE_JVMCI
94 #include "jvmci/jvmciJavaClasses.hpp"
95 #endif
96
97 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
98 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
99
100 InjectedField JavaClasses::_injected_fields[] = {
101 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
102 };
103
104 // Register native methods of Object
105 void java_lang_Object::register_natives(TRAPS) {
106 InstanceKlass* obj = vmClasses::Object_klass();
107 Method::register_native(obj, vmSymbols::hashCode_name(),
108 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
109 Method::register_native(obj, vmSymbols::wait_name(),
110 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
111 Method::register_native(obj, vmSymbols::notify_name(),
112 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
113 Method::register_native(obj, vmSymbols::notifyAll_name(),
114 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
115 Method::register_native(obj, vmSymbols::clone_name(),
116 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
117 }
118
119 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
120 return _injected_fields[(int)id].compute_offset();
121 }
122
123 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
124 *field_count = 0;
125
126 vmSymbolID sid = vmSymbols::find_sid(class_name);
127 if (sid == vmSymbolID::NO_SID) {
128 // Only well known classes can inject fields
129 return NULL;
130 }
131
132 int count = 0;
133 int start = -1;
134
135 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
136 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
137 count++; \
138 if (start == -1) { \
139 start = (int)InjectedFieldID::klass##_##name##_enum; \
140 } \
141 }
142 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
143 #undef LOOKUP_INJECTED_FIELD
144
145 if (start != -1) {
146 *field_count = count;
147 return _injected_fields + start;
148 }
149 return NULL;
150 }
151
152
153 // Helpful routine for computing field offsets at run time rather than hardcoding them
154 // Finds local fields only, including static fields. Static field offsets are from the
155 // beginning of the mirror.
156 void JavaClasses::compute_offset(int &dest_offset,
157 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
158 bool is_static) {
159 fieldDescriptor fd;
160 if (ik == NULL) {
161 ResourceMark rm;
162 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
163 vm_exit_during_initialization("Invalid layout of well-known class");
164 }
165
166 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
167 ResourceMark rm;
168 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
169 name_symbol->as_C_string(), signature_symbol->as_C_string());
170 #ifndef PRODUCT
171 // Prints all fields and offsets
172 Log(class) lt;
173 LogStream ls(lt.error());
174 ik->print_on(&ls);
175 #endif //PRODUCT
176 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
177 }
178 dest_offset = fd.offset();
179 }
180
181 // Overloading to pass name as a string.
182 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik,
183 const char* name_string, Symbol* signature_symbol,
184 bool is_static) {
185 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
186 if (name == NULL) {
187 ResourceMark rm;
188 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
189 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
190 }
191 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
192 }
193
194 // java_lang_String
195
196 int java_lang_String::_value_offset;
197 int java_lang_String::_hash_offset;
198 int java_lang_String::_hashIsZero_offset;
199 int java_lang_String::_coder_offset;
200 int java_lang_String::_flags_offset;
201
202 bool java_lang_String::_initialized;
203
204
205 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
206 uint8_t* addr = flags_addr(java_string);
207 uint8_t value = Atomic::load(addr);
208 while ((value & flag_mask) == 0) {
209 uint8_t old_value = value;
210 value |= flag_mask;
211 value = Atomic::cmpxchg(addr, old_value, value);
212 if (value == old_value) return false; // Flag bit changed from 0 to 1.
213 }
214 return true; // Flag bit is already 1.
215 }
216
217 #define STRING_FIELDS_DO(macro) \
218 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
219 macro(_hash_offset, k, "hash", int_signature, false); \
220 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
221 macro(_coder_offset, k, "coder", byte_signature, false);
222
223 void java_lang_String::compute_offsets() {
224 if (_initialized) {
225 return;
226 }
227
228 InstanceKlass* k = vmClasses::String_klass();
229 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
230 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
231
232 _initialized = true;
233 }
234
235 #if INCLUDE_CDS
236 void java_lang_String::serialize_offsets(SerializeClosure* f) {
237 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
238 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
239 f->do_bool(&_initialized);
240 }
241 #endif
242
243 class CompactStringsFixup : public FieldClosure {
244 private:
245 bool _value;
246
247 public:
248 CompactStringsFixup(bool value) : _value(value) {}
249
250 void do_field(fieldDescriptor* fd) {
251 if (fd->name() == vmSymbols::compact_strings_name()) {
252 oop mirror = fd->field_holder()->java_mirror();
253 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
254 assert(mirror != NULL, "String must have mirror already");
255 mirror->bool_field_put(fd->offset(), _value);
256 }
257 }
258 };
259
260 void java_lang_String::set_compact_strings(bool value) {
261 CompactStringsFixup fix(value);
262 vmClasses::String_klass()->do_local_static_fields(&fix);
263 }
264
265 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
266 assert(_initialized, "Must be initialized");
267 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
268
269 // Create the String object first, so there's a chance that the String
270 // and the char array it points to end up in the same cache line.
271 oop obj;
272 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
273
274 // Create the char array. The String object must be handlized here
275 // because GC can happen as a result of the allocation attempt.
276 Handle h_obj(THREAD, obj);
277 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
278 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
279
280 // Point the String at the char array
281 obj = h_obj();
282 set_value(obj, buffer);
283 // No need to zero the offset, allocation zero'ed the entire String object
284 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
285 return h_obj;
286 }
287
288 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
289 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
290 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
291 typeArrayOop buffer = value(h_obj());
292 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
293 if (is_latin1) {
294 for (int index = 0; index < length; index++) {
295 buffer->byte_at_put(index, (jbyte)unicode[index]);
296 }
297 } else {
298 for (int index = 0; index < length; index++) {
299 buffer->char_at_put(index, unicode[index]);
300 }
301 }
302
303 #ifdef ASSERT
304 {
305 ResourceMark rm;
306 char* expected = UNICODE::as_utf8(unicode, length);
307 char* actual = as_utf8_string(h_obj());
308 if (strcmp(expected, actual) != 0) {
309 fatal("Unicode conversion failure: %s --> %s", expected, actual);
310 }
311 }
312 #endif
313
314 return h_obj;
315 }
316
317 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
318 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
319 return h_obj();
320 }
321
322 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
323 if (utf8_str == NULL) {
324 return Handle();
325 }
326 bool has_multibyte, is_latin1;
327 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
328 if (!CompactStrings) {
329 has_multibyte = true;
330 is_latin1 = false;
331 }
332
333 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
334 if (length > 0) {
335 if (!has_multibyte) {
336 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
337 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
338 } else if (is_latin1) {
339 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
340 } else {
341 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
342 }
343 }
344
345 #ifdef ASSERT
346 // This check is too strict when the input string is not a valid UTF8.
347 // For example, it may be created with arbitrary content via jni_NewStringUTF.
348 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
349 ResourceMark rm;
350 const char* expected = utf8_str;
351 char* actual = as_utf8_string(h_obj());
352 if (strcmp(expected, actual) != 0) {
353 fatal("String conversion failure: %s --> %s", expected, actual);
354 }
355 }
356 #endif
357
358 return h_obj;
359 }
360
361 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
362 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
363 return h_obj();
364 }
365
366 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
367 const char* utf8_str = (char*)symbol->bytes();
368 int utf8_len = symbol->utf8_length();
369
370 bool has_multibyte, is_latin1;
371 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
372 if (!CompactStrings) {
373 has_multibyte = true;
374 is_latin1 = false;
375 }
376
377 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
378 if (length > 0) {
379 if (!has_multibyte) {
380 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
381 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
382 } else if (is_latin1) {
383 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
384 } else {
385 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
386 }
387 }
388
389 #ifdef ASSERT
390 {
391 ResourceMark rm;
392 const char* expected = symbol->as_utf8();
393 char* actual = as_utf8_string(h_obj());
394 if (strncmp(expected, actual, utf8_len) != 0) {
395 fatal("Symbol conversion failure: %s --> %s", expected, actual);
396 }
397 }
398 #endif
399
400 return h_obj;
401 }
402
403 // Converts a C string to a Java String based on current encoding
404 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
405 assert(str != NULL, "bad arguments");
406
407 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
408 static to_java_string_fn_t _to_java_string_fn = NULL;
409
410 if (_to_java_string_fn == NULL) {
411 void *lib_handle = os::native_java_library();
412 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
413 #if defined(_WIN32) && !defined(_WIN64)
414 if (_to_java_string_fn == NULL) {
415 // On 32 bit Windows, also try __stdcall decorated name
416 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
417 }
418 #endif
419 if (_to_java_string_fn == NULL) {
420 fatal("JNU_NewStringPlatform missing");
421 }
422 }
423
424 jstring js = NULL;
425 {
426 JavaThread* thread = THREAD;
427 HandleMark hm(thread);
428 ThreadToNativeFromVM ttn(thread);
429 js = (_to_java_string_fn)(thread->jni_environment(), str);
430 }
431
432 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
433 JNIHandles::destroy_local(js); // destroy local JNIHandle.
434 return native_platform_string;
435 }
436
437 // Converts a Java String to a native C string that can be used for
438 // native OS calls.
439 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
440 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
441 static to_platform_string_fn_t _to_platform_string_fn = NULL;
442
443 if (_to_platform_string_fn == NULL) {
444 void *lib_handle = os::native_java_library();
445 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
446 if (_to_platform_string_fn == NULL) {
447 fatal("GetStringPlatformChars missing");
448 }
449 }
450
451 char *native_platform_string;
452 jstring js;
453 { JavaThread* thread = THREAD;
454 js = (jstring) JNIHandles::make_local(thread, java_string());
455 HandleMark hm(thread);
456 ThreadToNativeFromVM ttn(thread);
457 JNIEnv *env = thread->jni_environment();
458 bool is_copy;
459 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
460 assert(is_copy == JNI_TRUE, "is_copy value changed");
461 }
462
463 // Uses a store barrier and therefore needs to be in vm state
464 JNIHandles::destroy_local(js);
465
466 return native_platform_string;
467 }
468
469 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
470 ResourceMark rm(THREAD);
471 return create_from_str(java_name->as_klass_external_name(), THREAD);
472 }
473
474 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
475 jchar* result = as_unicode_string_or_null(java_string, length);
476 if (result == NULL) {
477 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
478 }
479 return result;
480 }
481
482 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
483 typeArrayOop value = java_lang_String::value(java_string);
484 length = java_lang_String::length(java_string, value);
485 bool is_latin1 = java_lang_String::is_latin1(java_string);
486
487 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
488 if (result != NULL) {
489 if (!is_latin1) {
490 for (int index = 0; index < length; index++) {
491 result[index] = value->char_at(index);
492 }
493 } else {
494 for (int index = 0; index < length; index++) {
495 result[index] = ((jchar) value->byte_at(index)) & 0xff;
496 }
497 }
498 }
499 return result;
500 }
501
502 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
503 // The hash and hashIsZero fields are subject to a benign data race,
504 // making it crucial to ensure that any observable result of the
505 // calculation in this method stays correct under any possible read of
506 // these fields. Necessary restrictions to allow this to be correct
507 // without explicit memory fences or similar concurrency primitives is
508 // that we can ever only write to one of these two fields for a given
509 // String instance, and that the computation is idempotent and derived
510 // from immutable state
511 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
512 if (java_lang_String::hash_is_set(java_string)) {
513 return java_string->int_field(_hash_offset);
514 }
515
516 typeArrayOop value = java_lang_String::value(java_string);
517 int length = java_lang_String::length(java_string, value);
518 bool is_latin1 = java_lang_String::is_latin1(java_string);
519
520 unsigned int hash = 0;
521 if (length > 0) {
522 if (is_latin1) {
523 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
524 } else {
525 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
526 }
527 }
528
529 if (update) {
530 if (hash != 0) {
531 java_string->int_field_put(_hash_offset, hash);
532 } else {
533 java_string->bool_field_put(_hashIsZero_offset, true);
534 }
535 }
536 return hash;
537 }
538
539 unsigned int java_lang_String::hash_code(oop java_string) {
540 return hash_code_impl(java_string, /*update=*/true);
541 }
542
543 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
544 return hash_code_impl(java_string, /*update=*/false);
545 }
546
547
548 char* java_lang_String::as_quoted_ascii(oop java_string) {
549 typeArrayOop value = java_lang_String::value(java_string);
550 int length = java_lang_String::length(java_string, value);
551 bool is_latin1 = java_lang_String::is_latin1(java_string);
552
553 if (length == 0) return NULL;
554
555 char* result;
556 int result_length;
557 if (!is_latin1) {
558 jchar* base = value->char_at_addr(0);
559 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
560 result = NEW_RESOURCE_ARRAY(char, result_length);
561 UNICODE::as_quoted_ascii(base, length, result, result_length);
562 } else {
563 jbyte* base = value->byte_at_addr(0);
564 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
565 result = NEW_RESOURCE_ARRAY(char, result_length);
566 UNICODE::as_quoted_ascii(base, length, result, result_length);
567 }
568 assert(result_length >= length + 1, "must not be shorter");
569 assert(result_length == (int)strlen(result) + 1, "must match");
570 return result;
571 }
572
573 Symbol* java_lang_String::as_symbol(oop java_string) {
574 typeArrayOop value = java_lang_String::value(java_string);
575 int length = java_lang_String::length(java_string, value);
576 bool is_latin1 = java_lang_String::is_latin1(java_string);
577 if (!is_latin1) {
578 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
579 Symbol* sym = SymbolTable::new_symbol(base, length);
580 return sym;
581 } else {
582 ResourceMark rm;
583 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
584 const char* base = UNICODE::as_utf8(position, length);
585 Symbol* sym = SymbolTable::new_symbol(base, length);
586 return sym;
587 }
588 }
589
590 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
591 typeArrayOop value = java_lang_String::value(java_string);
592 int length = java_lang_String::length(java_string, value);
593 bool is_latin1 = java_lang_String::is_latin1(java_string);
594 if (!is_latin1) {
595 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
596 return SymbolTable::probe_unicode(base, length);
597 } else {
598 ResourceMark rm;
599 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
600 const char* base = UNICODE::as_utf8(position, length);
601 return SymbolTable::probe(base, length);
602 }
603 }
604
605 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
606 assert(value_equals(value, java_lang_String::value(java_string)),
607 "value must be same as java_lang_String::value(java_string)");
608 int length = java_lang_String::length(java_string, value);
609 if (length == 0) {
610 return 0;
611 }
612 if (!java_lang_String::is_latin1(java_string)) {
613 return UNICODE::utf8_length(value->char_at_addr(0), length);
614 } else {
615 return UNICODE::utf8_length(value->byte_at_addr(0), length);
616 }
617 }
618
619 int java_lang_String::utf8_length(oop java_string) {
620 typeArrayOop value = java_lang_String::value(java_string);
621 return utf8_length(java_string, value);
622 }
623
624 char* java_lang_String::as_utf8_string(oop java_string) {
625 int length;
626 return as_utf8_string(java_string, length);
627 }
628
629 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
630 typeArrayOop value = java_lang_String::value(java_string);
631 length = java_lang_String::length(java_string, value);
632 bool is_latin1 = java_lang_String::is_latin1(java_string);
633 if (!is_latin1) {
634 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
635 return UNICODE::as_utf8(position, length);
636 } else {
637 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
638 return UNICODE::as_utf8(position, length);
639 }
640 }
641
642 // Uses a provided buffer if it's sufficiently large, otherwise allocates
643 // a resource array to fit
644 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
645 typeArrayOop value = java_lang_String::value(java_string);
646 int len = java_lang_String::length(java_string, value);
647 bool is_latin1 = java_lang_String::is_latin1(java_string);
648 if (!is_latin1) {
649 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
650 utf8_len = UNICODE::utf8_length(position, len);
651 if (utf8_len >= buflen) {
652 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
653 }
654 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
655 } else {
656 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
657 utf8_len = UNICODE::utf8_length(position, len);
658 if (utf8_len >= buflen) {
659 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
660 }
661 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
662 }
663 }
664
665 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
666 assert(value_equals(value, java_lang_String::value(java_string)),
667 "value must be same as java_lang_String::value(java_string)");
668 int length = java_lang_String::length(java_string, value);
669 bool is_latin1 = java_lang_String::is_latin1(java_string);
670 if (!is_latin1) {
671 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
672 return UNICODE::as_utf8(position, length, buf, buflen);
673 } else {
674 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
675 return UNICODE::as_utf8(position, length, buf, buflen);
676 }
677 }
678
679 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
680 typeArrayOop value = java_lang_String::value(java_string);
681 return as_utf8_string(java_string, value, buf, buflen);
682 }
683
684 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
685 typeArrayOop value = java_lang_String::value(java_string);
686 bool is_latin1 = java_lang_String::is_latin1(java_string);
687 assert(start + len <= java_lang_String::length(java_string), "just checking");
688 if (!is_latin1) {
689 jchar* position = value->char_at_addr(start);
690 return UNICODE::as_utf8(position, len);
691 } else {
692 jbyte* position = value->byte_at_addr(start);
693 return UNICODE::as_utf8(position, len);
694 }
695 }
696
697 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
698 assert(value_equals(value, java_lang_String::value(java_string)),
699 "value must be same as java_lang_String::value(java_string)");
700 assert(start + len <= java_lang_String::length(java_string), "just checking");
701 bool is_latin1 = java_lang_String::is_latin1(java_string);
702 if (!is_latin1) {
703 jchar* position = value->char_at_addr(start);
704 return UNICODE::as_utf8(position, len, buf, buflen);
705 } else {
706 jbyte* position = value->byte_at_addr(start);
707 return UNICODE::as_utf8(position, len, buf, buflen);
708 }
709 }
710
711 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
712 assert(java_string->klass() == vmClasses::String_klass(),
713 "must be java_string");
714 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
715 int length = java_lang_String::length(java_string, value);
716 if (length != len) {
717 return false;
718 }
719 bool is_latin1 = java_lang_String::is_latin1(java_string);
720 if (!is_latin1) {
721 for (int i = 0; i < len; i++) {
722 if (value->char_at(i) != chars[i]) {
723 return false;
724 }
725 }
726 } else {
727 for (int i = 0; i < len; i++) {
728 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
729 return false;
730 }
731 }
732 }
733 return true;
734 }
735
736 bool java_lang_String::equals(oop str1, oop str2) {
737 assert(str1->klass() == vmClasses::String_klass(),
738 "must be java String");
739 assert(str2->klass() == vmClasses::String_klass(),
740 "must be java String");
741 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
742 bool is_latin1 = java_lang_String::is_latin1(str1);
743 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
744 bool is_latin2 = java_lang_String::is_latin1(str2);
745
746 if (is_latin1 != is_latin2) {
747 // Strings with different coders are never equal.
748 return false;
749 }
750 return value_equals(value1, value2);
751 }
752
753 void java_lang_String::print(oop java_string, outputStream* st) {
754 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
755 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
756
757 if (value == NULL) {
758 // This can happen if, e.g., printing a String
759 // object before its initializer has been called
760 st->print("NULL");
761 return;
762 }
763
764 int length = java_lang_String::length(java_string, value);
765 bool is_latin1 = java_lang_String::is_latin1(java_string);
766
767 st->print("\"");
768 for (int index = 0; index < length; index++) {
769 st->print("%c", (!is_latin1) ? value->char_at(index) :
770 ((jchar) value->byte_at(index)) & 0xff );
771 }
772 st->print("\"");
773 }
774
775 // java_lang_Class
776
777 int java_lang_Class::_klass_offset;
778 int java_lang_Class::_array_klass_offset;
779 int java_lang_Class::_oop_size_offset;
780 int java_lang_Class::_static_oop_field_count_offset;
781 int java_lang_Class::_class_loader_offset;
782 int java_lang_Class::_module_offset;
783 int java_lang_Class::_protection_domain_offset;
784 int java_lang_Class::_component_mirror_offset;
785 int java_lang_Class::_primary_mirror_offset;
786 int java_lang_Class::_secondary_mirror_offset;
787 int java_lang_Class::_signers_offset;
788 int java_lang_Class::_name_offset;
789 int java_lang_Class::_source_file_offset;
790 int java_lang_Class::_classData_offset;
791 int java_lang_Class::_classRedefinedCount_offset;
792
793 bool java_lang_Class::_offsets_computed = false;
794 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
795 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
796
797 #ifdef ASSERT
798 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
799 assert(fd->has_initial_value(), "caller should have checked this");
800 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
801 // Can't use vmSymbols::string_signature() as fd->signature() may have been relocated
802 // during DumpSharedSpaces
803 assert(fd->signature()->equals("Ljava/lang/String;"), "just checking");
804 }
805 #endif
806
807 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
808 DEBUG_ONLY(assert_valid_static_string_field(fd);)
809 oop string = fd->string_initial_value(CHECK);
810 mirror()->obj_field_put(fd->offset(), string);
811 }
812
813 #if INCLUDE_CDS_JAVA_HEAP
814 static void initialize_static_string_field_for_dump(fieldDescriptor* fd, Handle mirror) {
815 DEBUG_ONLY(assert_valid_static_string_field(fd);)
816 assert(DumpSharedSpaces, "must be");
817 assert(HeapShared::is_archived_object_during_dumptime(mirror()), "must be");
818 // Archive the String field and update the pointer.
819 oop s = mirror()->obj_field(fd->offset());
820 oop archived_s = StringTable::create_archived_string(s);
821 mirror()->obj_field_put(fd->offset(), archived_s);
822 }
823 #endif
824
825 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
826 assert(fd->has_initial_value(), "caller should have checked this");
827 BasicType t = fd->field_type();
828 switch (t) {
829 case T_BYTE:
830 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
831 break;
832 case T_BOOLEAN:
833 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
834 break;
835 case T_CHAR:
836 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
837 break;
838 case T_SHORT:
839 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
840 break;
841 case T_INT:
842 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
843 break;
844 case T_FLOAT:
845 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
846 break;
847 case T_DOUBLE:
848 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
849 break;
850 case T_LONG:
851 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
852 break;
853 default:
854 // Illegal ConstantValue attribute in class file should have been
855 // caught during classfile parsing.
856 ShouldNotReachHere();
857 }
858 }
859
860 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
861 assert(mirror.not_null() && fd->is_static(), "just checking");
862 if (fd->has_initial_value()) {
863 if (fd->field_type() != T_OBJECT) {
864 initialize_static_primitive_field(fd, mirror);
865 } else {
866 initialize_static_string_field(fd, mirror, CHECK);
867 }
868 }
869 }
870
871 #if INCLUDE_CDS_JAVA_HEAP
872 static void initialize_static_field_for_dump(fieldDescriptor* fd, Handle mirror) {
873 assert(mirror.not_null() && fd->is_static(), "just checking");
874 if (fd->has_initial_value()) {
875 if (fd->field_type() != T_OBJECT) {
876 initialize_static_primitive_field(fd, mirror);
877 } else {
878 initialize_static_string_field_for_dump(fd, mirror);
879 }
880 }
881 }
882 #endif
883
884 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
885 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
886
887 // If the offset was read from the shared archive, it was fixed up already
888 if (!k->is_shared()) {
889 if (k->is_instance_klass()) {
890 // During bootstrap, java.lang.Class wasn't loaded so static field
891 // offsets were computed without the size added it. Go back and
892 // update all the static field offsets to included the size.
893 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
894 if (fs.access_flags().is_static()) {
895 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
896 fs.set_offset(real_offset);
897 }
898 }
899 }
900 }
901
902 if (k->is_shared() && k->has_archived_mirror_index()) {
903 if (ArchiveHeapLoader::are_archived_mirrors_available()) {
904 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
905 assert(present, "Missing archived mirror for %s", k->external_name());
906 return;
907 } else {
908 k->clear_java_mirror_handle();
909 k->clear_archived_mirror_index();
910 }
911 }
912 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
913 }
914
915 void java_lang_Class::initialize_mirror_fields(Klass* k,
916 Handle mirror,
917 Handle protection_domain,
918 Handle classData,
919 TRAPS) {
920 // Set protection domain also
921 set_protection_domain(mirror(), protection_domain());
922
923 // Initialize static fields
924 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
925
926 // Set classData
927 set_class_data(mirror(), classData());
928 }
929
930 // Set the java.lang.Module module field in the java_lang_Class mirror
931 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
932 if (module.is_null()) {
933 // During startup, the module may be NULL only if java.base has not been defined yet.
934 // Put the class on the fixup_module_list to patch later when the java.lang.Module
935 // for java.base is known. But note that since we captured the NULL module another
936 // thread may have completed that initialization.
937
938 bool javabase_was_defined = false;
939 {
940 MutexLocker m1(current, Module_lock);
941 // Keep list of classes needing java.base module fixup
942 if (!ModuleEntryTable::javabase_defined()) {
943 assert(k->java_mirror() != NULL, "Class's mirror is null");
944 k->class_loader_data()->inc_keep_alive();
945 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
946 fixup_module_field_list()->push(k);
947 } else {
948 javabase_was_defined = true;
949 }
950 }
951
952 // If java.base was already defined then patch this particular class with java.base.
953 if (javabase_was_defined) {
954 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
955 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
956 "Setting class module field, " JAVA_BASE_NAME " should be defined");
957 Handle javabase_handle(current, javabase_entry->module());
958 set_module(mirror(), javabase_handle());
959 }
960 } else {
961 assert(Universe::is_module_initialized() ||
962 (ModuleEntryTable::javabase_defined() &&
963 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
964 "Incorrect java.lang.Module specification while creating mirror");
965 set_module(mirror(), module());
966 }
967 }
968
969 // Statically allocate fixup lists because they always get created.
970 void java_lang_Class::allocate_fixup_lists() {
971 GrowableArray<Klass*>* mirror_list =
972 new (mtClass) GrowableArray<Klass*>(40, mtClass);
973 set_fixup_mirror_list(mirror_list);
974
975 GrowableArray<Klass*>* module_list =
976 new (mtModule) GrowableArray<Klass*>(500, mtModule);
977 set_fixup_module_field_list(module_list);
978 }
979
980 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
981 Handle module, Handle protection_domain,
982 Handle classData, TRAPS) {
983 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
984 assert(k->java_mirror() == NULL, "should only assign mirror once");
985
986 // Use this moment of initialization to cache modifier_flags also,
987 // to support Class.getModifiers(). Instance classes recalculate
988 // the cached flags after the class file is parsed, but before the
989 // class is put into the system dictionary.
990 int computed_modifiers = k->compute_modifier_flags();
991 k->set_modifier_flags(computed_modifiers);
992 // Class_klass has to be loaded because it is used to allocate
993 // the mirror.
994 if (vmClasses::Class_klass_loaded()) {
995 // Allocate mirror (java.lang.Class instance)
996 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
997 Handle mirror(THREAD, mirror_oop);
998 Handle comp_mirror;
999
1000 // Setup indirection from mirror->klass
1001 set_klass(mirror(), k);
1002
1003 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1004 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1005
1006 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1007
1008 // It might also have a component mirror. This mirror must already exist.
1009 if (k->is_array_klass()) {
1010 if (k->is_flatArray_klass()) {
1011 Klass* element_klass = (Klass*) FlatArrayKlass::cast(k)->element_klass();
1012 assert(element_klass->is_inline_klass(), "Must be inline type component");
1013 InlineKlass* vk = InlineKlass::cast(element_klass);
1014 comp_mirror = Handle(THREAD, vk->val_mirror());
1015 } else if (k->is_typeArray_klass()) {
1016 BasicType type = TypeArrayKlass::cast(k)->element_type();
1017 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1018 } else {
1019 assert(k->is_objArray_klass(), "Must be");
1020 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1021 assert(element_klass != NULL, "Must have an element klass");
1022 oop comp_oop = element_klass->java_mirror();
1023 if (element_klass->is_inline_klass()) {
1024 InlineKlass* ik = InlineKlass::cast(element_klass);
1025 comp_oop = k->name()->is_Q_array_signature() ? ik->val_mirror() : ik->ref_mirror();
1026 }
1027 comp_mirror = Handle(THREAD, comp_oop);
1028 }
1029 assert(comp_mirror() != NULL, "must have a mirror");
1030
1031 // Two-way link between the array klass and its component mirror:
1032 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1033 set_component_mirror(mirror(), comp_mirror());
1034 // See below for ordering dependencies between field array_klass in component mirror
1035 // and java_mirror in this klass.
1036 } else {
1037 assert(k->is_instance_klass(), "Must be");
1038
1039 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1040 if (HAS_PENDING_EXCEPTION) {
1041 // If any of the fields throws an exception like OOM remove the klass field
1042 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1043 // This mirror looks like a primitive type, which logically it is because it
1044 // it represents no class.
1045 set_klass(mirror(), NULL);
1046 return;
1047 }
1048 }
1049
1050 // set the classLoader field in the java_lang_Class instance
1051 assert(class_loader() == k->class_loader(), "should be same");
1052 set_class_loader(mirror(), class_loader());
1053
1054 // Setup indirection from klass->mirror
1055 // after any exceptions can happen during allocations.
1056 k->set_java_mirror(mirror);
1057
1058 // Set the module field in the java_lang_Class instance. This must be done
1059 // after the mirror is set.
1060 set_mirror_module_field(THREAD, k, mirror, module);
1061
1062 if (comp_mirror() != NULL) {
1063 // Set after k->java_mirror() is published, because compiled code running
1064 // concurrently doesn't expect a k to have a null java_mirror.
1065 release_set_array_klass(comp_mirror(), k);
1066 }
1067
1068 if (k->is_inline_klass()) {
1069 oop secondary_mirror = create_secondary_mirror(k, mirror, CHECK);
1070 set_primary_mirror(mirror(), mirror());
1071 set_secondary_mirror(mirror(), secondary_mirror);
1072 }
1073 } else {
1074 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1075 fixup_mirror_list()->push(k);
1076 }
1077 }
1078 // Create the secondary mirror for inline class. Sets all the fields of this java.lang.Class
1079 // instance with the same value as the primary mirror
1080 oop java_lang_Class::create_secondary_mirror(Klass* k, Handle mirror, TRAPS) {
1081 assert(k->is_inline_klass(), "primitive class");
1082 // Allocate mirror (java.lang.Class instance)
1083 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK_0);
1084 Handle secondary_mirror(THREAD, mirror_oop);
1085
1086 java_lang_Class::set_klass(secondary_mirror(), k);
1087 java_lang_Class::set_static_oop_field_count(secondary_mirror(), static_oop_field_count(mirror()));
1088
1089 set_protection_domain(secondary_mirror(), protection_domain(mirror()));
1090 set_class_loader(secondary_mirror(), class_loader(mirror()));
1091 // ## handle if java.base is not yet defined
1092 set_module(secondary_mirror(), module(mirror()));
1093 set_primary_mirror(secondary_mirror(), mirror());
1094 set_secondary_mirror(secondary_mirror(), secondary_mirror());
1095 return secondary_mirror();
1096 }
1097
1098 #if INCLUDE_CDS_JAVA_HEAP
1099 // Clears mirror fields. Static final fields with initial values are reloaded
1100 // from constant pool. The object identity hash is in the object header and is
1101 // not affected.
1102 class ResetMirrorField: public FieldClosure {
1103 private:
1104 Handle _m;
1105
1106 public:
1107 ResetMirrorField(Handle mirror) : _m(mirror) {}
1108
1109 void do_field(fieldDescriptor* fd) {
1110 assert(DumpSharedSpaces, "dump time only");
1111 assert(_m.not_null(), "Mirror cannot be NULL");
1112
1113 if (fd->is_static() && fd->has_initial_value()) {
1114 initialize_static_field_for_dump(fd, _m);
1115 return;
1116 }
1117
1118 BasicType ft = fd->field_type();
1119 switch (ft) {
1120 case T_BYTE:
1121 _m()->byte_field_put(fd->offset(), 0);
1122 break;
1123 case T_CHAR:
1124 _m()->char_field_put(fd->offset(), 0);
1125 break;
1126 case T_DOUBLE:
1127 _m()->double_field_put(fd->offset(), 0);
1128 break;
1129 case T_FLOAT:
1130 _m()->float_field_put(fd->offset(), 0);
1131 break;
1132 case T_INT:
1133 _m()->int_field_put(fd->offset(), 0);
1134 break;
1135 case T_LONG:
1136 _m()->long_field_put(fd->offset(), 0);
1137 break;
1138 case T_SHORT:
1139 _m()->short_field_put(fd->offset(), 0);
1140 break;
1141 case T_BOOLEAN:
1142 _m()->bool_field_put(fd->offset(), false);
1143 break;
1144 case T_PRIMITIVE_OBJECT:
1145 case T_ARRAY:
1146 case T_OBJECT: {
1147 // It might be useful to cache the String field, but
1148 // for now just clear out any reference field
1149 oop o = _m()->obj_field(fd->offset());
1150 _m()->obj_field_put(fd->offset(), NULL);
1151 break;
1152 }
1153 default:
1154 ShouldNotReachHere();
1155 break;
1156 }
1157 }
1158 };
1159
1160 void java_lang_Class::archive_basic_type_mirrors() {
1161 assert(HeapShared::can_write(), "must be");
1162
1163 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1164 BasicType bt = (BasicType)t;
1165 if (!is_reference_type(bt)) {
1166 oop m = Universe::java_mirror(bt);
1167 assert(m != NULL, "sanity");
1168 // Update the field at _array_klass_offset to point to the relocated array klass.
1169 oop archived_m = HeapShared::archive_object(m);
1170 assert(archived_m != NULL, "sanity");
1171
1172 // Clear the fields. Just to be safe
1173 Klass *k = m->klass();
1174 Handle archived_mirror_h(Thread::current(), archived_m);
1175 ResetMirrorField reset(archived_mirror_h);
1176 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1177
1178 log_trace(cds, heap, mirror)(
1179 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1180 type2name(bt), p2i(m), p2i(archived_m));
1181
1182 Universe::set_archived_basic_type_mirror_index(bt, HeapShared::append_root(archived_m));
1183 }
1184 }
1185 }
1186 //
1187 // After the mirror object is successfully archived, the archived
1188 // klass is set with _has_archived_raw_mirror flag.
1189 //
1190 // The _has_archived_raw_mirror flag is cleared at runtime when the
1191 // archived mirror is restored. If archived java heap data cannot
1192 // be used at runtime, new mirror object is created for the shared
1193 // class. The _has_archived_raw_mirror is cleared also during the process.
1194 oop java_lang_Class::archive_mirror(Klass* k) {
1195 assert(HeapShared::can_write(), "must be");
1196
1197 // Mirror is already archived
1198 if (k->has_archived_mirror_index()) {
1199 assert(k->archived_java_mirror() != NULL, "no archived mirror");
1200 return k->archived_java_mirror();
1201 }
1202
1203 // No mirror
1204 oop mirror = k->java_mirror();
1205 if (mirror == NULL) {
1206 return NULL;
1207 }
1208
1209 if (k->is_instance_klass()) {
1210 InstanceKlass *ik = InstanceKlass::cast(k);
1211 assert(ik->signers() == NULL, "class with signer should have been excluded");
1212
1213 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1214 ik->is_shared_app_class())) {
1215 // Archiving mirror for classes from non-builtin loaders is not
1216 // supported.
1217 return NULL;
1218 }
1219 }
1220
1221 if (k->is_inline_klass()) {
1222 // Inline types have a primary mirror and a secondary mirror. Don't handle this for now. TODO:CDS
1223 k->clear_java_mirror_handle();
1224 return NULL;
1225 }
1226
1227 // Now start archiving the mirror object
1228 oop archived_mirror = HeapShared::archive_object(mirror);
1229 if (archived_mirror == NULL) {
1230 return NULL;
1231 }
1232
1233 archived_mirror = process_archived_mirror(k, mirror, archived_mirror);
1234 if (archived_mirror == NULL) {
1235 return NULL;
1236 }
1237
1238 k->set_archived_java_mirror(archived_mirror);
1239
1240 ResourceMark rm;
1241 log_trace(cds, heap, mirror)(
1242 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1243 k->external_name(), p2i(mirror), p2i(archived_mirror));
1244
1245 return archived_mirror;
1246 }
1247
1248 // The process is based on create_mirror().
1249 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1250 oop archived_mirror) {
1251 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1252 // to archived metadata and objects below.
1253 Klass *c = archived_mirror->klass();
1254 Handle archived_mirror_h(Thread::current(), archived_mirror);
1255 ResetMirrorField reset(archived_mirror_h);
1256 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1257
1258 if (k->is_array_klass()) {
1259 oop archived_comp_mirror;
1260 if (k->is_typeArray_klass()) {
1261 // The primitive type mirrors are already archived. Get the archived mirror.
1262 oop comp_mirror = component_mirror(mirror);
1263 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1264 assert(archived_comp_mirror != NULL, "Must be");
1265 } else {
1266 assert(k->is_objArray_klass(), "Must be");
1267 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1268 assert(element_klass != NULL, "Must have an element klass");
1269 archived_comp_mirror = archive_mirror(element_klass);
1270 if (archived_comp_mirror == NULL) {
1271 return NULL;
1272 }
1273 }
1274 set_component_mirror(archived_mirror, archived_comp_mirror);
1275 } else {
1276 assert(k->is_instance_klass(), "Must be");
1277
1278 // Reset local static fields in the mirror
1279 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1280
1281 set_protection_domain(archived_mirror, NULL);
1282 set_signers(archived_mirror, NULL);
1283 set_source_file(archived_mirror, NULL);
1284 }
1285
1286 // clear class loader and mirror_module_field
1287 set_class_loader(archived_mirror, NULL);
1288 set_module(archived_mirror, NULL);
1289
1290 return archived_mirror;
1291 }
1292
1293 // Returns true if the mirror is updated, false if no archived mirror
1294 // data is present. After the archived mirror object is restored, the
1295 // shared klass' _has_raw_archived_mirror flag is cleared.
1296 bool java_lang_Class::restore_archived_mirror(Klass *k,
1297 Handle class_loader, Handle module,
1298 Handle protection_domain, TRAPS) {
1299 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1300 // see more details in vmClasses::resolve_all().
1301 if (!vmClasses::Class_klass_loaded()) {
1302 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1303 fixup_mirror_list()->push(k);
1304 return true;
1305 }
1306
1307 oop m = k->archived_java_mirror();
1308 assert(m != NULL, "must have stored non-null archived mirror");
1309
1310 // Sanity: clear it now to prevent re-initialization if any of the following fails
1311 k->clear_archived_mirror_index();
1312
1313 // mirror is archived, restore
1314 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1315 if (ArchiveHeapLoader::is_mapped()) {
1316 assert(Universe::heap()->is_archived_object(m), "must be archived mirror object");
1317 }
1318 assert(as_Klass(m) == k, "must be");
1319 Handle mirror(THREAD, m);
1320
1321 if (!k->is_array_klass()) {
1322 // - local static final fields with initial values were initialized at dump time
1323
1324 if (protection_domain.not_null()) {
1325 set_protection_domain(mirror(), protection_domain());
1326 }
1327 }
1328
1329 assert(class_loader() == k->class_loader(), "should be same");
1330 if (class_loader.not_null()) {
1331 set_class_loader(mirror(), class_loader());
1332 }
1333
1334 k->set_java_mirror(mirror);
1335
1336 set_mirror_module_field(THREAD, k, mirror, module);
1337
1338 if (log_is_enabled(Trace, cds, heap, mirror)) {
1339 ResourceMark rm(THREAD);
1340 log_trace(cds, heap, mirror)(
1341 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1342 }
1343
1344 return true;
1345 }
1346 #endif // INCLUDE_CDS_JAVA_HEAP
1347
1348 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1349 assert(_module_offset != 0, "must have been computed already");
1350 set_module(k->java_mirror(), module());
1351 }
1352
1353 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1354 assert(_oop_size_offset != 0, "must be set");
1355 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1356 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1357 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1358 }
1359
1360 int java_lang_Class::static_oop_field_count(oop java_class) {
1361 assert(_static_oop_field_count_offset != 0, "must be set");
1362 return java_class->int_field(_static_oop_field_count_offset);
1363 }
1364
1365 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1366 assert(_static_oop_field_count_offset != 0, "must be set");
1367 java_class->int_field_put(_static_oop_field_count_offset, size);
1368 }
1369
1370 oop java_lang_Class::protection_domain(oop java_class) {
1371 assert(_protection_domain_offset != 0, "must be set");
1372 return java_class->obj_field(_protection_domain_offset);
1373 }
1374 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1375 assert(_protection_domain_offset != 0, "must be set");
1376 java_class->obj_field_put(_protection_domain_offset, pd);
1377 }
1378
1379 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1380 assert(_component_mirror_offset != 0, "must be set");
1381 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1382 }
1383 oop java_lang_Class::component_mirror(oop java_class) {
1384 assert(_component_mirror_offset != 0, "must be set");
1385 return java_class->obj_field(_component_mirror_offset);
1386 }
1387
1388 oop java_lang_Class::primary_mirror(oop java_class) {
1389 assert(_primary_mirror_offset != 0, "must be set");
1390 return java_class->obj_field(_primary_mirror_offset);
1391 }
1392
1393 void java_lang_Class::set_primary_mirror(oop java_class, oop mirror) {
1394 assert(_primary_mirror_offset != 0, "must be set");
1395 java_class->obj_field_put(_primary_mirror_offset, mirror);
1396 }
1397
1398 oop java_lang_Class::secondary_mirror(oop java_class) {
1399 assert(_secondary_mirror_offset != 0, "must be set");
1400 return java_class->obj_field(_secondary_mirror_offset);
1401 }
1402
1403 void java_lang_Class::set_secondary_mirror(oop java_class, oop mirror) {
1404 assert(_secondary_mirror_offset != 0, "must be set");
1405 java_class->obj_field_put(_secondary_mirror_offset, mirror);
1406 }
1407
1408 objArrayOop java_lang_Class::signers(oop java_class) {
1409 assert(_signers_offset != 0, "must be set");
1410 return (objArrayOop)java_class->obj_field(_signers_offset);
1411 }
1412 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1413 assert(_signers_offset != 0, "must be set");
1414 java_class->obj_field_put(_signers_offset, signers);
1415 }
1416
1417 oop java_lang_Class::class_data(oop java_class) {
1418 assert(_classData_offset != 0, "must be set");
1419 return java_class->obj_field(_classData_offset);
1420 }
1421 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1422 assert(_classData_offset != 0, "must be set");
1423 java_class->obj_field_put(_classData_offset, class_data);
1424 }
1425
1426 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1427 assert(_class_loader_offset != 0, "offsets should have been initialized");
1428 java_class->obj_field_put(_class_loader_offset, loader);
1429 }
1430
1431 oop java_lang_Class::class_loader(oop java_class) {
1432 assert(_class_loader_offset != 0, "must be set");
1433 return java_class->obj_field(_class_loader_offset);
1434 }
1435
1436 oop java_lang_Class::module(oop java_class) {
1437 assert(_module_offset != 0, "must be set");
1438 return java_class->obj_field(_module_offset);
1439 }
1440
1441 void java_lang_Class::set_module(oop java_class, oop module) {
1442 assert(_module_offset != 0, "must be set");
1443 java_class->obj_field_put(_module_offset, module);
1444 }
1445
1446 oop java_lang_Class::name(Handle java_class, TRAPS) {
1447 assert(_name_offset != 0, "must be set");
1448 oop o = java_class->obj_field(_name_offset);
1449 if (o == NULL) {
1450 o = StringTable::intern(as_external_name(java_class()), THREAD);
1451 java_class->obj_field_put(_name_offset, o);
1452 }
1453 return o;
1454 }
1455
1456 oop java_lang_Class::source_file(oop java_class) {
1457 assert(_source_file_offset != 0, "must be set");
1458 return java_class->obj_field(_source_file_offset);
1459 }
1460
1461 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1462 assert(_source_file_offset != 0, "must be set");
1463 java_class->obj_field_put(_source_file_offset, source_file);
1464 }
1465
1466 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1467 // This should be improved by adding a field at the Java level or by
1468 // introducing a new VM klass (see comment in ClassFileParser)
1469 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1470 if (type != T_VOID) {
1471 Klass* aklass = Universe::typeArrayKlassObj(type);
1472 assert(aklass != NULL, "correct bootstrap");
1473 release_set_array_klass(java_class, aklass);
1474 }
1475 #ifdef ASSERT
1476 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1477 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1478 #endif
1479 return java_class;
1480 }
1481
1482 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1483 assert(is_instance(java_class), "must be a Class object");
1484 java_class->metadata_field_put(_klass_offset, klass);
1485 }
1486
1487
1488 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1489 assert(is_instance(java_class), "must be a Class object");
1490 Symbol* name = NULL;
1491 bool is_instance = false;
1492 bool is_Q_descriptor = false;
1493 if (is_primitive(java_class)) {
1494 name = vmSymbols::type_signature(primitive_type(java_class));
1495 } else {
1496 Klass* k = as_Klass(java_class);
1497 is_instance = k->is_instance_klass();
1498 is_Q_descriptor = k->is_inline_klass() && is_secondary_mirror(java_class);
1499 name = k->name();
1500 }
1501 if (name == NULL) {
1502 st->print("<null>");
1503 return;
1504 }
1505 if (is_instance) {
1506 st->print(is_Q_descriptor ? "Q" : "L");
1507 }
1508 st->write((char*) name->base(), (int) name->utf8_length());
1509 if (is_instance) st->print(";");
1510 }
1511
1512 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1513 assert(is_instance(java_class), "must be a Class object");
1514 Symbol* name;
1515 if (is_primitive(java_class)) {
1516 name = vmSymbols::type_signature(primitive_type(java_class));
1517 // Because this can create a new symbol, the caller has to decrement
1518 // the refcount, so make adjustment here and below for symbols returned
1519 // that are not created or incremented due to a successful lookup.
1520 name->increment_refcount();
1521 } else {
1522 Klass* k = as_Klass(java_class);
1523 if (!k->is_instance_klass()) {
1524 name = k->name();
1525 name->increment_refcount();
1526 } else {
1527 ResourceMark rm;
1528 const char* sigstr;
1529 if (k->is_inline_klass() && is_secondary_mirror(java_class)) {
1530 sigstr = InlineKlass::cast(k)->val_signature_name();
1531 } else {
1532 sigstr = k->signature_name();
1533 }
1534 int siglen = (int) strlen(sigstr);
1535 if (!intern_if_not_found) {
1536 name = SymbolTable::probe(sigstr, siglen);
1537 } else {
1538 name = SymbolTable::new_symbol(sigstr, siglen);
1539 }
1540 }
1541 }
1542 return name;
1543 }
1544
1545 // Returns the Java name for this Java mirror (Resource allocated)
1546 // See Klass::external_name().
1547 // For primitive type Java mirrors, its type name is returned.
1548 const char* java_lang_Class::as_external_name(oop java_class) {
1549 assert(is_instance(java_class), "must be a Class object");
1550 const char* name = NULL;
1551 if (is_primitive(java_class)) {
1552 name = type2name(primitive_type(java_class));
1553 } else {
1554 name = as_Klass(java_class)->external_name();
1555 }
1556 if (name == NULL) {
1557 name = "<null>";
1558 }
1559 return name;
1560 }
1561
1562 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1563 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1564 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1565 return k;
1566 }
1567
1568
1569 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1570 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1571 java_class->release_metadata_field_put(_array_klass_offset, klass);
1572 }
1573
1574
1575 BasicType java_lang_Class::primitive_type(oop java_class) {
1576 assert(is_primitive(java_class), "just checking");
1577 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1578 BasicType type = T_VOID;
1579 if (ak != NULL) {
1580 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1581 type = ArrayKlass::cast(ak)->element_type();
1582 } else {
1583 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1584 }
1585 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1586 return type;
1587 }
1588
1589 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1590 assert(is_instance(java_class), "must be a Class object");
1591 if (is_primitive(java_class)) {
1592 if (reference_klass != NULL)
1593 (*reference_klass) = NULL;
1594 return primitive_type(java_class);
1595 } else {
1596 if (reference_klass != NULL)
1597 (*reference_klass) = as_Klass(java_class);
1598 return T_OBJECT;
1599 }
1600 }
1601
1602
1603 oop java_lang_Class::primitive_mirror(BasicType t) {
1604 oop mirror = Universe::java_mirror(t);
1605 assert(mirror != NULL && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1606 assert(is_primitive(mirror), "must be primitive");
1607 return mirror;
1608 }
1609
1610 #define CLASS_FIELDS_DO(macro) \
1611 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1612 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1613 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1614 macro(_primary_mirror_offset, k, "primaryType", class_signature, false); \
1615 macro(_secondary_mirror_offset, k, "secondaryType", class_signature, false); \
1616 macro(_module_offset, k, "module", module_signature, false); \
1617 macro(_name_offset, k, "name", string_signature, false); \
1618 macro(_classData_offset, k, "classData", object_signature, false);
1619
1620 void java_lang_Class::compute_offsets() {
1621 if (_offsets_computed) {
1622 return;
1623 }
1624
1625 _offsets_computed = true;
1626
1627 InstanceKlass* k = vmClasses::Class_klass();
1628 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1629
1630 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1631 }
1632
1633 #if INCLUDE_CDS
1634 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1635 f->do_bool(&_offsets_computed);
1636
1637 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1638
1639 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1640 }
1641 #endif
1642
1643 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1644 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1645 return the_class_mirror->int_field(_classRedefinedCount_offset);
1646 }
1647
1648 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1649 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1650 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1651 }
1652
1653
1654 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1655 // platform thread structure, and a eetop offset which was used for thread
1656 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1657 // merged, so in the HotSpot VM we just use the eetop field for the thread
1658 // instead of the privateInfo_offset.
1659 //
1660 // Note: The stackSize field is only present starting in 1.4.
1661
1662 int java_lang_Thread_FieldHolder::_group_offset;
1663 int java_lang_Thread_FieldHolder::_priority_offset;
1664 int java_lang_Thread_FieldHolder::_stackSize_offset;
1665 int java_lang_Thread_FieldHolder::_daemon_offset;
1666 int java_lang_Thread_FieldHolder::_thread_status_offset;
1667
1668 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \
1669 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1670 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1671 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1672 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1673 macro(_thread_status_offset, k, "threadStatus", int_signature, false)
1674
1675 void java_lang_Thread_FieldHolder::compute_offsets() {
1676 assert(_group_offset == 0, "offsets should be initialized only once");
1677
1678 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass();
1679 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1680 }
1681
1682 #if INCLUDE_CDS
1683 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) {
1684 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1685 }
1686 #endif
1687
1688 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) {
1689 return holder->obj_field(_group_offset);
1690 }
1691
1692 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) {
1693 return (ThreadPriority)holder->int_field(_priority_offset);
1694 }
1695
1696 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) {
1697 holder->int_field_put(_priority_offset, priority);
1698 }
1699
1700 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) {
1701 return holder->long_field(_stackSize_offset);
1702 }
1703
1704 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) {
1705 return holder->bool_field(_daemon_offset) != 0;
1706 }
1707
1708 void java_lang_Thread_FieldHolder::set_daemon(oop holder) {
1709 holder->bool_field_put(_daemon_offset, true);
1710 }
1711
1712 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) {
1713 holder->int_field_put(_thread_status_offset, static_cast<int>(status));
1714 }
1715
1716 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) {
1717 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset));
1718 }
1719
1720
1721 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0;
1722 int java_lang_Thread_Constants::_static_NOT_SUPPORTED_CLASSLOADER_offset = 0;
1723
1724 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \
1725 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true); \
1726 macro(_static_NOT_SUPPORTED_CLASSLOADER_offset, k, "NOT_SUPPORTED_CLASSLOADER", classloader_signature, true);
1727
1728 void java_lang_Thread_Constants::compute_offsets() {
1729 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once");
1730
1731 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1732 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1733 }
1734
1735 #if INCLUDE_CDS
1736 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) {
1737 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1738 }
1739 #endif
1740
1741 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() {
1742 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1743 oop base = k->static_field_base_raw();
1744 return base->obj_field(_static_VTHREAD_GROUP_offset);
1745 }
1746
1747 oop java_lang_Thread_Constants::get_NOT_SUPPORTED_CLASSLOADER() {
1748 InstanceKlass* k = vmClasses::Thread_Constants_klass();
1749 oop base = k->static_field_base_raw();
1750 return base->obj_field(_static_NOT_SUPPORTED_CLASSLOADER_offset);
1751 }
1752
1753 int java_lang_Thread::_holder_offset;
1754 int java_lang_Thread::_name_offset;
1755 int java_lang_Thread::_contextClassLoader_offset;
1756 int java_lang_Thread::_inheritedAccessControlContext_offset;
1757 int java_lang_Thread::_eetop_offset;
1758 int java_lang_Thread::_jvmti_thread_state_offset;
1759 int java_lang_Thread::_interrupted_offset;
1760 int java_lang_Thread::_tid_offset;
1761 int java_lang_Thread::_continuation_offset;
1762 int java_lang_Thread::_park_blocker_offset;
1763 int java_lang_Thread::_scopedValueBindings_offset;
1764 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;)
1765
1766 #define THREAD_FIELDS_DO(macro) \
1767 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \
1768 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1769 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1770 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1771 macro(_eetop_offset, k, "eetop", long_signature, false); \
1772 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1773 macro(_tid_offset, k, "tid", long_signature, false); \
1774 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1775 macro(_continuation_offset, k, "cont", continuation_signature, false); \
1776 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false);
1777
1778 void java_lang_Thread::compute_offsets() {
1779 assert(_holder_offset == 0, "offsets should be initialized only once");
1780
1781 InstanceKlass* k = vmClasses::Thread_klass();
1782 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1783 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1784 }
1785
1786 #if INCLUDE_CDS
1787 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1788 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1789 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1790 }
1791 #endif
1792
1793 JavaThread* java_lang_Thread::thread(oop java_thread) {
1794 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset));
1795 }
1796
1797 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1798 java_thread->address_field_put(_eetop_offset, (address)thread);
1799 }
1800
1801 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) {
1802 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset);
1803 }
1804
1805 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) {
1806 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state);
1807 }
1808
1809 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) {
1810 assert(java_thread != NULL, "need a java_lang_Thread pointer here");
1811 java_thread->obj_field_put(_scopedValueBindings_offset, NULL);
1812 }
1813
1814 oop java_lang_Thread::holder(oop java_thread) {
1815 return java_thread->obj_field(_holder_offset);
1816 }
1817
1818 bool java_lang_Thread::interrupted(oop java_thread) {
1819 // Make sure the caller can safely access oops.
1820 assert(Thread::current()->is_VM_thread() ||
1821 (JavaThread::current()->thread_state() != _thread_blocked &&
1822 JavaThread::current()->thread_state() != _thread_in_native),
1823 "Unsafe access to oop");
1824 return java_thread->bool_field_volatile(_interrupted_offset);
1825 }
1826
1827 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1828 // Make sure the caller can safely access oops.
1829 assert(Thread::current()->is_VM_thread() ||
1830 (JavaThread::current()->thread_state() != _thread_blocked &&
1831 JavaThread::current()->thread_state() != _thread_in_native),
1832 "Unsafe access to oop");
1833 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1834 }
1835
1836
1837 oop java_lang_Thread::name(oop java_thread) {
1838 return java_thread->obj_field(_name_offset);
1839 }
1840
1841
1842 void java_lang_Thread::set_name(oop java_thread, oop name) {
1843 java_thread->obj_field_put(_name_offset, name);
1844 }
1845
1846
1847 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1848 oop holder = java_lang_Thread::holder(java_thread);
1849 assert(holder != NULL, "Java Thread not initialized");
1850 return java_lang_Thread_FieldHolder::priority(holder);
1851 }
1852
1853
1854 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1855 oop holder = java_lang_Thread::holder(java_thread);
1856 assert(holder != NULL, "Java Thread not initialized");
1857 java_lang_Thread_FieldHolder::set_priority(holder, priority);
1858 }
1859
1860
1861 oop java_lang_Thread::threadGroup(oop java_thread) {
1862 oop holder = java_lang_Thread::holder(java_thread);
1863 assert(holder != NULL, "Java Thread not initialized");
1864 return java_lang_Thread_FieldHolder::threadGroup(holder);
1865 }
1866
1867
1868 bool java_lang_Thread::is_alive(oop java_thread) {
1869 JavaThread* thr = java_lang_Thread::thread(java_thread);
1870 return (thr != NULL);
1871 }
1872
1873
1874 bool java_lang_Thread::is_daemon(oop java_thread) {
1875 oop holder = java_lang_Thread::holder(java_thread);
1876 assert(holder != NULL, "Java Thread not initialized");
1877 return java_lang_Thread_FieldHolder::is_daemon(holder);
1878 }
1879
1880
1881 void java_lang_Thread::set_daemon(oop java_thread) {
1882 oop holder = java_lang_Thread::holder(java_thread);
1883 assert(holder != NULL, "Java Thread not initialized");
1884 java_lang_Thread_FieldHolder::set_daemon(holder);
1885 }
1886
1887 oop java_lang_Thread::context_class_loader(oop java_thread) {
1888 return java_thread->obj_field(_contextClassLoader_offset);
1889 }
1890
1891 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1892 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1893 }
1894
1895
1896 jlong java_lang_Thread::stackSize(oop java_thread) {
1897 oop holder = java_lang_Thread::holder(java_thread);
1898 assert(holder != NULL, "Java Thread not initialized");
1899 return java_lang_Thread_FieldHolder::stackSize(holder);
1900 }
1901
1902 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1903 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) {
1904 oop holder = java_lang_Thread::holder(java_thread);
1905 assert(holder != NULL, "Java Thread not initialized");
1906 java_lang_Thread_FieldHolder::set_thread_status(holder, status);
1907 }
1908
1909 // Read thread status value from threadStatus field in java.lang.Thread java class.
1910 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1911 // Make sure the caller is operating on behalf of the VM or is
1912 // running VM code (state == _thread_in_vm).
1913 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1914 JavaThread::current()->thread_state() == _thread_in_vm,
1915 "Java Thread is not running in vm");
1916 oop holder = java_lang_Thread::holder(java_thread);
1917 if (holder == NULL) {
1918 return JavaThreadStatus::NEW; // Java Thread not initialized
1919 } else {
1920 return java_lang_Thread_FieldHolder::get_thread_status(holder);
1921 }
1922 }
1923
1924 ByteSize java_lang_Thread::thread_id_offset() {
1925 return in_ByteSize(_tid_offset);
1926 }
1927
1928 oop java_lang_Thread::park_blocker(oop java_thread) {
1929 return java_thread->obj_field(_park_blocker_offset);
1930 }
1931
1932 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) {
1933 ThreadsListHandle tlh(JavaThread::current());
1934 JavaThread* thread;
1935 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread);
1936 if (is_virtual) {
1937 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread);
1938 if (carrier_thread == NULL) {
1939 return NULL;
1940 }
1941 thread = java_lang_Thread::thread(carrier_thread);
1942 } else {
1943 thread = java_lang_Thread::thread(java_thread);
1944 }
1945 if (thread == NULL) {
1946 return NULL;
1947 }
1948
1949 class GetStackTraceClosure : public HandshakeClosure {
1950 public:
1951 const Handle _java_thread;
1952 int _depth;
1953 bool _retry_handshake;
1954 GrowableArray<Method*>* _methods;
1955 GrowableArray<int>* _bcis;
1956
1957 GetStackTraceClosure(Handle java_thread) :
1958 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false),
1959 _methods(nullptr), _bcis(nullptr) {
1960 }
1961 ~GetStackTraceClosure() {
1962 delete _methods;
1963 delete _bcis;
1964 }
1965
1966 bool read_reset_retry() {
1967 bool ret = _retry_handshake;
1968 // If we re-execute the handshake this method need to return false
1969 // when the handshake cannot be performed. (E.g. thread terminating)
1970 _retry_handshake = false;
1971 return ret;
1972 }
1973
1974 void do_thread(Thread* th) {
1975 if (!Thread::current()->is_Java_thread()) {
1976 _retry_handshake = true;
1977 return;
1978 }
1979
1980 JavaThread* thread = JavaThread::cast(th);
1981
1982 if (!thread->has_last_Java_frame()) {
1983 return;
1984 }
1985
1986 bool carrier = false;
1987 if (java_lang_VirtualThread::is_instance(_java_thread())) {
1988 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread
1989 const ContinuationEntry* ce = thread->vthread_continuation();
1990 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) {
1991 return; // not mounted
1992 }
1993 } else {
1994 carrier = (thread->vthread_continuation() != NULL);
1995 }
1996
1997 const int max_depth = MaxJavaStackTraceDepth;
1998 const bool skip_hidden = !ShowHiddenFrames;
1999
2000 // Pick minimum length that will cover most cases
2001 int init_length = 64;
2002 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal);
2003 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal);
2004
2005 int total_count = 0;
2006 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops
2007 !vfst.at_end() && (max_depth == 0 || max_depth != total_count);
2008 vfst.next()) {
2009
2010 if (skip_hidden && (vfst.method()->is_hidden() ||
2011 vfst.method()->is_continuation_enter_intrinsic())) {
2012 continue;
2013 }
2014
2015 _methods->push(vfst.method());
2016 _bcis->push(vfst.bci());
2017 total_count++;
2018 }
2019
2020 _depth = total_count;
2021 }
2022 };
2023
2024 // Handshake with target
2025 ResourceMark rm(THREAD);
2026 HandleMark hm(THREAD);
2027 GetStackTraceClosure gstc(Handle(THREAD, java_thread));
2028 do {
2029 Handshake::execute(&gstc, &tlh, thread);
2030 } while (gstc.read_reset_retry());
2031
2032 // Stop if no stack trace is found.
2033 if (gstc._depth == 0) {
2034 return NULL;
2035 }
2036
2037 // Convert to StackTraceElement array
2038 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2039 assert(k != NULL, "must be loaded in 1.4+");
2040 if (k->should_be_initialized()) {
2041 k->initialize(CHECK_NULL);
2042 }
2043 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL);
2044
2045 for (int i = 0; i < gstc._depth; i++) {
2046 methodHandle method(THREAD, gstc._methods->at(i));
2047 oop element = java_lang_StackTraceElement::create(method,
2048 gstc._bcis->at(i),
2049 CHECK_NULL);
2050 trace->obj_at_put(i, element);
2051 }
2052
2053 return trace();
2054 }
2055
2056 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2057 oop holder = java_lang_Thread::holder(java_thread);
2058 assert(holder != NULL, "Java Thread not initialized");
2059 JavaThreadStatus status = java_lang_Thread_FieldHolder::get_thread_status(holder);
2060 switch (status) {
2061 case JavaThreadStatus::NEW : return "NEW";
2062 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2063 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2064 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2065 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2066 case JavaThreadStatus::PARKED : return "WAITING (parking)";
2067 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
2068 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
2069 case JavaThreadStatus::TERMINATED : return "TERMINATED";
2070 default : return "UNKNOWN";
2071 };
2072 }
2073 int java_lang_ThreadGroup::_parent_offset;
2074 int java_lang_ThreadGroup::_name_offset;
2075 int java_lang_ThreadGroup::_maxPriority_offset;
2076 int java_lang_ThreadGroup::_daemon_offset;
2077
2078 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
2079 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2080 return java_thread_group->obj_field(_parent_offset);
2081 }
2082
2083 // ("name as oop" accessor is not necessary)
2084
2085 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
2086 oop name = java_thread_group->obj_field(_name_offset);
2087 // ThreadGroup.name can be null
2088 if (name != NULL) {
2089 return java_lang_String::as_utf8_string(name);
2090 }
2091 return NULL;
2092 }
2093
2094 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
2095 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2096 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
2097 }
2098
2099 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
2100 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
2101 return java_thread_group->bool_field(_daemon_offset) != 0;
2102 }
2103
2104 #define THREADGROUP_FIELDS_DO(macro) \
2105 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
2106 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2107 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
2108 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false);
2109
2110 void java_lang_ThreadGroup::compute_offsets() {
2111 assert(_parent_offset == 0, "offsets should be initialized only once");
2112
2113 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2114 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2115 }
2116
2117 #if INCLUDE_CDS
2118 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2119 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2120 }
2121 #endif
2122
2123
2124 // java_lang_VirtualThread
2125
2126 int java_lang_VirtualThread::static_notify_jvmti_events_offset;
2127 int java_lang_VirtualThread::static_vthread_scope_offset;
2128 int java_lang_VirtualThread::_carrierThread_offset;
2129 int java_lang_VirtualThread::_continuation_offset;
2130 int java_lang_VirtualThread::_state_offset;
2131
2132 #define VTHREAD_FIELDS_DO(macro) \
2133 macro(static_notify_jvmti_events_offset, k, "notifyJvmtiEvents", bool_signature, true); \
2134 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \
2135 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \
2136 macro(_continuation_offset, k, "cont", continuation_signature, false); \
2137 macro(_state_offset, k, "state", int_signature, false)
2138
2139 static bool vthread_notify_jvmti_events = JNI_FALSE;
2140
2141 void java_lang_VirtualThread::compute_offsets() {
2142 InstanceKlass* k = vmClasses::VirtualThread_klass();
2143 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2144 }
2145
2146 void java_lang_VirtualThread::init_static_notify_jvmti_events() {
2147 if (vthread_notify_jvmti_events) {
2148 InstanceKlass* ik = vmClasses::VirtualThread_klass();
2149 oop base = ik->static_field_base_raw();
2150 base->release_bool_field_put(static_notify_jvmti_events_offset, vthread_notify_jvmti_events);
2151 }
2152 }
2153
2154 bool java_lang_VirtualThread::is_instance(oop obj) {
2155 return obj != NULL && is_subclass(obj->klass());
2156 }
2157
2158 oop java_lang_VirtualThread::carrier_thread(oop vthread) {
2159 oop thread = vthread->obj_field(_carrierThread_offset);
2160 return thread;
2161 }
2162
2163 oop java_lang_VirtualThread::continuation(oop vthread) {
2164 oop cont = vthread->obj_field(_continuation_offset);
2165 return cont;
2166 }
2167
2168 int java_lang_VirtualThread::state(oop vthread) {
2169 return vthread->int_field_acquire(_state_offset);
2170 }
2171
2172 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) {
2173 JavaThreadStatus status = JavaThreadStatus::NEW;
2174 switch (state) {
2175 case NEW :
2176 status = JavaThreadStatus::NEW;
2177 break;
2178 case STARTED :
2179 case RUNNABLE :
2180 case RUNNABLE_SUSPENDED :
2181 case RUNNING :
2182 case PARKING :
2183 case YIELDING :
2184 status = JavaThreadStatus::RUNNABLE;
2185 break;
2186 case PARKED :
2187 case PARKED_SUSPENDED :
2188 case PINNED :
2189 status = JavaThreadStatus::PARKED;
2190 break;
2191 case TERMINATED :
2192 status = JavaThreadStatus::TERMINATED;
2193 break;
2194 default:
2195 ShouldNotReachHere();
2196 }
2197 return status;
2198 }
2199
2200 #if INCLUDE_CDS
2201 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) {
2202 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2203 }
2204 #endif
2205
2206 bool java_lang_VirtualThread::notify_jvmti_events() {
2207 return vthread_notify_jvmti_events == JNI_TRUE;
2208 }
2209
2210 void java_lang_VirtualThread::set_notify_jvmti_events(bool enable) {
2211 vthread_notify_jvmti_events = enable;
2212 }
2213
2214
2215 // java_lang_Throwable
2216
2217 int java_lang_Throwable::_backtrace_offset;
2218 int java_lang_Throwable::_detailMessage_offset;
2219 int java_lang_Throwable::_stackTrace_offset;
2220 int java_lang_Throwable::_depth_offset;
2221 int java_lang_Throwable::_cause_offset;
2222 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2223
2224 #define THROWABLE_FIELDS_DO(macro) \
2225 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2226 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2227 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2228 macro(_depth_offset, k, "depth", int_signature, false); \
2229 macro(_cause_offset, k, "cause", throwable_signature, false); \
2230 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2231
2232 void java_lang_Throwable::compute_offsets() {
2233 InstanceKlass* k = vmClasses::Throwable_klass();
2234 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2235 }
2236
2237 #if INCLUDE_CDS
2238 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2239 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2240 }
2241 #endif
2242
2243 oop java_lang_Throwable::unassigned_stacktrace() {
2244 InstanceKlass* ik = vmClasses::Throwable_klass();
2245 oop base = ik->static_field_base_raw();
2246 return base->obj_field(_static_unassigned_stacktrace_offset);
2247 }
2248
2249 oop java_lang_Throwable::backtrace(oop throwable) {
2250 return throwable->obj_field_acquire(_backtrace_offset);
2251 }
2252
2253
2254 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2255 throwable->release_obj_field_put(_backtrace_offset, value);
2256 }
2257
2258 int java_lang_Throwable::depth(oop throwable) {
2259 return throwable->int_field(_depth_offset);
2260 }
2261
2262 void java_lang_Throwable::set_depth(oop throwable, int value) {
2263 throwable->int_field_put(_depth_offset, value);
2264 }
2265
2266 oop java_lang_Throwable::message(oop throwable) {
2267 return throwable->obj_field(_detailMessage_offset);
2268 }
2269
2270 oop java_lang_Throwable::cause(oop throwable) {
2271 return throwable->obj_field(_cause_offset);
2272 }
2273
2274 // Return Symbol for detailed_message or NULL
2275 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2276 PreserveExceptionMark pm(Thread::current());
2277 oop detailed_message = java_lang_Throwable::message(throwable);
2278 if (detailed_message != NULL) {
2279 return java_lang_String::as_symbol(detailed_message);
2280 }
2281 return NULL;
2282 }
2283
2284 void java_lang_Throwable::set_message(oop throwable, oop value) {
2285 throwable->obj_field_put(_detailMessage_offset, value);
2286 }
2287
2288
2289 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2290 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2291 }
2292
2293 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2294 set_stacktrace(throwable, NULL);
2295 }
2296
2297
2298 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2299 ResourceMark rm;
2300 Klass* k = throwable->klass();
2301 assert(k != NULL, "just checking");
2302 st->print("%s", k->external_name());
2303 oop msg = message(throwable);
2304 if (msg != NULL) {
2305 st->print(": %s", java_lang_String::as_utf8_string(msg));
2306 }
2307 }
2308
2309 // After this many redefines, the stack trace is unreliable.
2310 const int MAX_VERSION = USHRT_MAX;
2311
2312 static inline bool version_matches(Method* method, int version) {
2313 assert(version < MAX_VERSION, "version is too big");
2314 return method != NULL && (method->constants()->version() == version);
2315 }
2316
2317 // This class provides a simple wrapper over the internal structure of
2318 // exception backtrace to insulate users of the backtrace from needing
2319 // to know what it looks like.
2320 // The code of this class is not GC safe. Allocations can only happen
2321 // in expand().
2322 class BacktraceBuilder: public StackObj {
2323 friend class BacktraceIterator;
2324 private:
2325 Handle _backtrace;
2326 objArrayOop _head;
2327 typeArrayOop _methods;
2328 typeArrayOop _bcis;
2329 objArrayOop _mirrors;
2330 typeArrayOop _names; // Needed to insulate method name against redefinition.
2331 // True if the top frame of the backtrace is omitted because it shall be hidden.
2332 bool _has_hidden_top_frame;
2333 int _index;
2334 NoSafepointVerifier _nsv;
2335
2336 enum {
2337 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2338 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2339 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2340 trace_names_offset = java_lang_Throwable::trace_names_offset,
2341 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2342 trace_next_offset = java_lang_Throwable::trace_next_offset,
2343 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2344 trace_size = java_lang_Throwable::trace_size,
2345 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2346 };
2347
2348 // get info out of chunks
2349 static typeArrayOop get_methods(objArrayHandle chunk) {
2350 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2351 assert(methods != NULL, "method array should be initialized in backtrace");
2352 return methods;
2353 }
2354 static typeArrayOop get_bcis(objArrayHandle chunk) {
2355 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2356 assert(bcis != NULL, "bci array should be initialized in backtrace");
2357 return bcis;
2358 }
2359 static objArrayOop get_mirrors(objArrayHandle chunk) {
2360 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2361 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2362 return mirrors;
2363 }
2364 static typeArrayOop get_names(objArrayHandle chunk) {
2365 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2366 assert(names != NULL, "names array should be initialized in backtrace");
2367 return names;
2368 }
2369 static bool has_hidden_top_frame(objArrayHandle chunk) {
2370 oop hidden = chunk->obj_at(trace_hidden_offset);
2371 return hidden != NULL;
2372 }
2373
2374 public:
2375
2376 // constructor for new backtrace
2377 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2378 expand(CHECK);
2379 _backtrace = Handle(THREAD, _head);
2380 _index = 0;
2381 }
2382
2383 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2384 _methods = get_methods(backtrace);
2385 _bcis = get_bcis(backtrace);
2386 _mirrors = get_mirrors(backtrace);
2387 _names = get_names(backtrace);
2388 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2389 assert(_methods->length() == _bcis->length() &&
2390 _methods->length() == _mirrors->length() &&
2391 _mirrors->length() == _names->length(),
2392 "method and source information arrays should match");
2393
2394 // head is the preallocated backtrace
2395 _head = backtrace();
2396 _backtrace = Handle(thread, _head);
2397 _index = 0;
2398 }
2399
2400 void expand(TRAPS) {
2401 objArrayHandle old_head(THREAD, _head);
2402 PauseNoSafepointVerifier pnsv(&_nsv);
2403
2404 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2405 objArrayHandle new_head(THREAD, head);
2406
2407 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2408 typeArrayHandle new_methods(THREAD, methods);
2409
2410 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2411 typeArrayHandle new_bcis(THREAD, bcis);
2412
2413 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2414 objArrayHandle new_mirrors(THREAD, mirrors);
2415
2416 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2417 typeArrayHandle new_names(THREAD, names);
2418
2419 if (!old_head.is_null()) {
2420 old_head->obj_at_put(trace_next_offset, new_head());
2421 }
2422 new_head->obj_at_put(trace_methods_offset, new_methods());
2423 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2424 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2425 new_head->obj_at_put(trace_names_offset, new_names());
2426 new_head->obj_at_put(trace_hidden_offset, NULL);
2427
2428 _head = new_head();
2429 _methods = new_methods();
2430 _bcis = new_bcis();
2431 _mirrors = new_mirrors();
2432 _names = new_names();
2433 _index = 0;
2434 }
2435
2436 oop backtrace() {
2437 return _backtrace();
2438 }
2439
2440 inline void push(Method* method, int bci, TRAPS) {
2441 // Smear the -1 bci to 0 since the array only holds unsigned
2442 // shorts. The later line number lookup would just smear the -1
2443 // to a 0 even if it could be recorded.
2444 if (bci == SynchronizationEntryBCI) bci = 0;
2445
2446 if (_index >= trace_chunk_size) {
2447 methodHandle mhandle(THREAD, method);
2448 expand(CHECK);
2449 method = mhandle();
2450 }
2451
2452 _methods->ushort_at_put(_index, method->orig_method_idnum());
2453 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2454
2455 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2456 // klass owning the symbols alive so their refcounts aren't decremented.
2457 Symbol* name = method->name();
2458 _names->symbol_at_put(_index, name);
2459
2460 // We need to save the mirrors in the backtrace to keep the class
2461 // from being unloaded while we still have this stack trace.
2462 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2463 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2464
2465 _index++;
2466 }
2467
2468 void set_has_hidden_top_frame() {
2469 if (!_has_hidden_top_frame) {
2470 // It would be nice to add java/lang/Boolean::TRUE here
2471 // to indicate that this backtrace has a hidden top frame.
2472 // But this code is used before TRUE is allocated.
2473 // Therefore let's just use an arbitrary legal oop
2474 // available right here. _methods is a short[].
2475 assert(_methods != NULL, "we need a legal oop");
2476 _has_hidden_top_frame = true;
2477 _head->obj_at_put(trace_hidden_offset, _methods);
2478 }
2479 }
2480 };
2481
2482 struct BacktraceElement : public StackObj {
2483 int _method_id;
2484 int _bci;
2485 int _version;
2486 Symbol* _name;
2487 Handle _mirror;
2488 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2489 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2490 };
2491
2492 class BacktraceIterator : public StackObj {
2493 int _index;
2494 objArrayHandle _result;
2495 objArrayHandle _mirrors;
2496 typeArrayHandle _methods;
2497 typeArrayHandle _bcis;
2498 typeArrayHandle _names;
2499
2500 void init(objArrayHandle result, Thread* thread) {
2501 // Get method id, bci, version and mirror from chunk
2502 _result = result;
2503 if (_result.not_null()) {
2504 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2505 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2506 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2507 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2508 _index = 0;
2509 }
2510 }
2511 public:
2512 BacktraceIterator(objArrayHandle result, Thread* thread) {
2513 init(result, thread);
2514 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2515 }
2516
2517 BacktraceElement next(Thread* thread) {
2518 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2519 _methods->ushort_at(_index),
2520 Backtrace::version_at(_bcis->int_at(_index)),
2521 Backtrace::bci_at(_bcis->int_at(_index)),
2522 _names->symbol_at(_index));
2523 _index++;
2524
2525 if (_index >= java_lang_Throwable::trace_chunk_size) {
2526 int next_offset = java_lang_Throwable::trace_next_offset;
2527 // Get next chunk
2528 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2529 init(result, thread);
2530 }
2531 return e;
2532 }
2533
2534 bool repeat() {
2535 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2536 }
2537 };
2538
2539
2540 // Print stack trace element to resource allocated buffer
2541 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2542 int version, int bci, Symbol* name) {
2543 ResourceMark rm;
2544
2545 // Get strings and string lengths
2546 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2547 const char* klass_name = holder->external_name();
2548 int buf_len = (int)strlen(klass_name);
2549
2550 char* method_name = name->as_C_string();
2551 buf_len += (int)strlen(method_name);
2552
2553 char* source_file_name = NULL;
2554 Symbol* source = Backtrace::get_source_file_name(holder, version);
2555 if (source != NULL) {
2556 source_file_name = source->as_C_string();
2557 buf_len += (int)strlen(source_file_name);
2558 }
2559
2560 char *module_name = NULL, *module_version = NULL;
2561 ModuleEntry* module = holder->module();
2562 if (module->is_named()) {
2563 module_name = module->name()->as_C_string();
2564 buf_len += (int)strlen(module_name);
2565 if (module->version() != NULL) {
2566 module_version = module->version()->as_C_string();
2567 buf_len += (int)strlen(module_version);
2568 }
2569 }
2570
2571 // Allocate temporary buffer with extra space for formatting and line number
2572 const size_t buf_size = buf_len + 64;
2573 char* buf = NEW_RESOURCE_ARRAY(char, buf_size);
2574
2575 // Print stack trace line in buffer
2576 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name);
2577
2578 // Print module information
2579 if (module_name != NULL) {
2580 if (module_version != NULL) {
2581 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version);
2582 } else {
2583 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name);
2584 }
2585 }
2586
2587 // The method can be NULL if the requested class version is gone
2588 Method* method = holder->method_with_orig_idnum(method_id, version);
2589 if (!version_matches(method, version)) {
2590 strcat(buf, "Redefined)");
2591 } else {
2592 int line_number = Backtrace::get_line_number(method, bci);
2593 if (line_number == -2) {
2594 strcat(buf, "Native Method)");
2595 } else {
2596 if (source_file_name != NULL && (line_number != -1)) {
2597 // Sourcename and linenumber
2598 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number);
2599 } else if (source_file_name != NULL) {
2600 // Just sourcename
2601 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name);
2602 } else {
2603 // Neither sourcename nor linenumber
2604 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)");
2605 }
2606 CompiledMethod* nm = method->code();
2607 if (WizardMode && nm != NULL) {
2608 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2609 }
2610 }
2611 }
2612
2613 st->print_cr("%s", buf);
2614 }
2615
2616 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2617 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2618 int method_id = method->orig_method_idnum();
2619 int version = method->constants()->version();
2620 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2621 }
2622
2623 /**
2624 * Print the throwable message and its stack trace plus all causes by walking the
2625 * cause chain. The output looks the same as of Throwable.printStackTrace().
2626 */
2627 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2628 // First, print the message.
2629 print(throwable(), st);
2630 st->cr();
2631
2632 // Now print the stack trace.
2633 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2634 while (throwable.not_null()) {
2635 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2636 if (result.is_null()) {
2637 st->print_raw_cr("\t<<no stack trace available>>");
2638 return;
2639 }
2640 BacktraceIterator iter(result, THREAD);
2641
2642 while (iter.repeat()) {
2643 BacktraceElement bte = iter.next(THREAD);
2644 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2645 }
2646 {
2647 // Call getCause() which doesn't necessarily return the _cause field.
2648 ExceptionMark em(THREAD);
2649 JavaValue cause(T_OBJECT);
2650 JavaCalls::call_virtual(&cause,
2651 throwable,
2652 throwable->klass(),
2653 vmSymbols::getCause_name(),
2654 vmSymbols::void_throwable_signature(),
2655 THREAD);
2656 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2657 if (HAS_PENDING_EXCEPTION) {
2658 CLEAR_PENDING_EXCEPTION;
2659 throwable = Handle();
2660 } else {
2661 throwable = Handle(THREAD, cause.get_oop());
2662 if (throwable.not_null()) {
2663 st->print("Caused by: ");
2664 print(throwable(), st);
2665 st->cr();
2666 }
2667 }
2668 }
2669 }
2670 }
2671
2672 /**
2673 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2674 */
2675 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2676 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2677 JavaValue result(T_VOID);
2678 JavaCalls::call_virtual(&result,
2679 throwable,
2680 vmClasses::Throwable_klass(),
2681 vmSymbols::printStackTrace_name(),
2682 vmSymbols::void_method_signature(),
2683 THREAD);
2684 }
2685
2686 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2687 if (!StackTraceInThrowable) return;
2688 ResourceMark rm(THREAD);
2689
2690 // Start out by clearing the backtrace for this object, in case the VM
2691 // runs out of memory while allocating the stack trace
2692 set_backtrace(throwable(), NULL);
2693 // Clear lazily constructed Java level stacktrace if refilling occurs
2694 // This is unnecessary in 1.7+ but harmless
2695 clear_stacktrace(throwable());
2696
2697 int max_depth = MaxJavaStackTraceDepth;
2698 JavaThread* thread = THREAD;
2699
2700 BacktraceBuilder bt(CHECK);
2701
2702 // If there is no Java frame just return the method that was being called
2703 // with bci 0
2704 if (!thread->has_last_Java_frame()) {
2705 if (max_depth >= 1 && method() != NULL) {
2706 bt.push(method(), 0, CHECK);
2707 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2708 set_depth(throwable(), 1);
2709 set_backtrace(throwable(), bt.backtrace());
2710 }
2711 return;
2712 }
2713
2714 // Instead of using vframe directly, this version of fill_in_stack_trace
2715 // basically handles everything by hand. This significantly improved the
2716 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2717 // See bug 6333838 for more details.
2718 // The "ASSERT" here is to verify this method generates the exactly same stack
2719 // trace as utilizing vframe.
2720 #ifdef ASSERT
2721 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2722 #endif
2723 int total_count = 0;
2724 RegisterMap map(thread,
2725 RegisterMap::UpdateMap::skip,
2726 RegisterMap::ProcessFrames::skip,
2727 RegisterMap::WalkContinuation::include);
2728 int decode_offset = 0;
2729 CompiledMethod* nm = NULL;
2730 bool skip_fillInStackTrace_check = false;
2731 bool skip_throwableInit_check = false;
2732 bool skip_hidden = !ShowHiddenFrames;
2733 bool show_carrier = ShowCarrierFrames;
2734 ContinuationEntry* cont_entry = thread->last_continuation();
2735 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2736 Method* method = NULL;
2737 int bci = 0;
2738
2739 // Compiled java method case.
2740 if (decode_offset != 0) {
2741 DebugInfoReadStream stream(nm, decode_offset);
2742 decode_offset = stream.read_int();
2743 method = (Method*)nm->metadata_at(stream.read_int());
2744 bci = stream.read_bci();
2745 } else {
2746 if (fr.is_first_frame()) break;
2747
2748 if (Continuation::is_continuation_enterSpecial(fr)) {
2749 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), "");
2750 if (!show_carrier && cont_entry->is_virtual_thread()) {
2751 break;
2752 }
2753 cont_entry = cont_entry->parent();
2754 }
2755
2756 address pc = fr.pc();
2757 if (fr.is_interpreted_frame()) {
2758 address bcp;
2759 if (!map.in_cont()) {
2760 bcp = fr.interpreter_frame_bcp();
2761 method = fr.interpreter_frame_method();
2762 } else {
2763 bcp = map.stack_chunk()->interpreter_frame_bcp(fr);
2764 method = map.stack_chunk()->interpreter_frame_method(fr);
2765 }
2766 bci = method->bci_from(bcp);
2767 fr = fr.sender(&map);
2768 } else {
2769 CodeBlob* cb = fr.cb();
2770 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2771 // but non nmethod
2772 fr = fr.sender(&map);
2773 if (cb == NULL || !cb->is_compiled()) {
2774 continue;
2775 }
2776 nm = cb->as_compiled_method();
2777 assert(nm->method() != NULL, "must be");
2778 if (nm->method()->is_native()) {
2779 method = nm->method();
2780 bci = 0;
2781 } else {
2782 PcDesc* pd = nm->pc_desc_at(pc);
2783 decode_offset = pd->scope_decode_offset();
2784 // if decode_offset is not equal to 0, it will execute the
2785 // "compiled java method case" at the beginning of the loop.
2786 continue;
2787 }
2788 }
2789 }
2790 #ifdef ASSERT
2791 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace
2792 assert(st.method() == method && st.bci() == bci, "Wrong stack trace");
2793 st.next();
2794 }
2795 #endif
2796
2797 // the format of the stacktrace will be:
2798 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2799 // - 0 or more <init> methods for the exception class (skipped)
2800 // - rest of the stack
2801
2802 if (!skip_fillInStackTrace_check) {
2803 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2804 throwable->is_a(method->method_holder())) {
2805 continue;
2806 }
2807 else {
2808 skip_fillInStackTrace_check = true; // gone past them all
2809 }
2810 }
2811 if (!skip_throwableInit_check) {
2812 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2813
2814 // skip <init> methods of the exception class and superclasses
2815 // This is similar to classic VM.
2816 if (method->is_object_constructor() &&
2817 throwable->is_a(method->method_holder())) {
2818 continue;
2819 } else {
2820 // there are none or we've seen them all - either way stop checking
2821 skip_throwableInit_check = true;
2822 }
2823 }
2824 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2825 if (skip_hidden) {
2826 if (total_count == 0) {
2827 // The top frame will be hidden from the stack trace.
2828 bt.set_has_hidden_top_frame();
2829 }
2830 continue;
2831 }
2832 }
2833
2834 bt.push(method, bci, CHECK);
2835 total_count++;
2836 }
2837
2838 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2839
2840 // Put completed stack trace into throwable object
2841 set_backtrace(throwable(), bt.backtrace());
2842 set_depth(throwable(), total_count);
2843 }
2844
2845 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2846 // No-op if stack trace is disabled
2847 if (!StackTraceInThrowable) {
2848 return;
2849 }
2850
2851 // Disable stack traces for some preallocated out of memory errors
2852 if (!Universe::should_fill_in_stack_trace(throwable)) {
2853 return;
2854 }
2855
2856 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2857 PreserveExceptionMark pm(THREAD);
2858
2859 fill_in_stack_trace(throwable, method, THREAD);
2860 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2861 // original exception via the PreserveExceptionMark destructor.
2862 CLEAR_PENDING_EXCEPTION;
2863 }
2864
2865 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2866 // Allocate stack trace - backtrace is created but not filled in
2867
2868 // No-op if stack trace is disabled
2869 if (!StackTraceInThrowable) return;
2870 BacktraceBuilder bt(CHECK); // creates a backtrace
2871 set_backtrace(throwable(), bt.backtrace());
2872 }
2873
2874
2875 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2876 // Fill in stack trace into preallocated backtrace (no GC)
2877
2878 // No-op if stack trace is disabled
2879 if (!StackTraceInThrowable) return;
2880
2881 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2882
2883 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2884
2885 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2886 assert(backtrace.not_null(), "backtrace should have been preallocated");
2887
2888 ResourceMark rm(THREAD);
2889 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2890
2891 BacktraceBuilder bt(THREAD, backtrace);
2892
2893 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2894 // methods as preallocated errors aren't created by "java" code.
2895
2896 // fill in as much stack trace as possible
2897 int chunk_count = 0;
2898 for (;!st.at_end(); st.next()) {
2899 bt.push(st.method(), st.bci(), CHECK);
2900 chunk_count++;
2901
2902 // Bail-out for deep stacks
2903 if (chunk_count >= trace_chunk_size) break;
2904 }
2905 set_depth(throwable(), chunk_count);
2906 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2907
2908 // We support the Throwable immutability protocol defined for Java 7.
2909 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2910 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2911 }
2912
2913 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2914 objArrayHandle stack_trace_array_h, TRAPS) {
2915
2916 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2917 THROW(vmSymbols::java_lang_NullPointerException());
2918 }
2919
2920 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2921
2922 if (stack_trace_array_h->length() != depth) {
2923 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2924 }
2925
2926 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2927 BacktraceIterator iter(result, THREAD);
2928
2929 int index = 0;
2930 while (iter.repeat()) {
2931 BacktraceElement bte = iter.next(THREAD);
2932
2933 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2934
2935 if (stack_trace_element.is_null()) {
2936 THROW(vmSymbols::java_lang_NullPointerException());
2937 }
2938
2939 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2940 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2941
2942 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2943 method,
2944 bte._version,
2945 bte._bci,
2946 bte._name,
2947 CHECK);
2948 }
2949 }
2950
2951 Handle java_lang_Throwable::get_cause_with_stack_trace(Handle throwable, TRAPS) {
2952 // Call to JVM to fill in the stack trace and clear declaringClassObject to
2953 // not keep classes alive in the stack trace.
2954 // call this: public StackTraceElement[] getStackTrace()
2955 assert(throwable.not_null(), "shouldn't be");
2956
2957 JavaValue result(T_ARRAY);
2958 JavaCalls::call_virtual(&result, throwable,
2959 vmClasses::Throwable_klass(),
2960 vmSymbols::getStackTrace_name(),
2961 vmSymbols::getStackTrace_signature(),
2962 CHECK_NH);
2963 Handle stack_trace(THREAD, result.get_oop());
2964 assert(stack_trace->is_objArray(), "Should be an array");
2965
2966 // Throw ExceptionInInitializerError as the cause with this exception in
2967 // the message and stack trace.
2968
2969 // Now create the message with the original exception and thread name.
2970 Symbol* message = java_lang_Throwable::detail_message(throwable());
2971 ResourceMark rm(THREAD);
2972 stringStream st;
2973 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2974 message == nullptr ? "" : ":");
2975 if (message == NULL) {
2976 st.print("[in thread \"%s\"]", THREAD->name());
2977 } else {
2978 st.print("%s [in thread \"%s\"]", message->as_C_string(), THREAD->name());
2979 }
2980
2981 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2982 Handle h_cause = Exceptions::new_exception(THREAD, exception_name, st.as_string());
2983
2984 // If new_exception returns a different exception while creating the exception, return null.
2985 if (h_cause->klass()->name() != exception_name) {
2986 log_info(class, init)("Exception thrown while saving initialization exception %s",
2987 h_cause->klass()->external_name());
2988 return Handle();
2989 }
2990 java_lang_Throwable::set_stacktrace(h_cause(), stack_trace());
2991 // Clear backtrace because the stacktrace should be used instead.
2992 set_backtrace(h_cause(), NULL);
2993 return h_cause;
2994 }
2995
2996 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2997 JavaThread* current = JavaThread::current();
2998 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2999 BacktraceIterator iter(result, current);
3000 // No backtrace available.
3001 if (!iter.repeat()) return false;
3002
3003 // If the exception happened in a frame that has been hidden, i.e.,
3004 // omitted from the back trace, we can not compute the message.
3005 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
3006 if (hidden != NULL) {
3007 return false;
3008 }
3009
3010 // Get first backtrace element.
3011 BacktraceElement bte = iter.next(current);
3012
3013 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
3014 assert(holder != NULL, "first element should be non-null");
3015 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3016
3017 // Original version is no longer available.
3018 if (m == NULL || !version_matches(m, bte._version)) {
3019 return false;
3020 }
3021
3022 *method = m;
3023 *bci = bte._bci;
3024 return true;
3025 }
3026
3027 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
3028 // Allocate java.lang.StackTraceElement instance
3029 InstanceKlass* k = vmClasses::StackTraceElement_klass();
3030 assert(k != NULL, "must be loaded in 1.4+");
3031 if (k->should_be_initialized()) {
3032 k->initialize(CHECK_NULL);
3033 }
3034
3035 Handle element = k->allocate_instance_handle(CHECK_NULL);
3036
3037 int version = method->constants()->version();
3038 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
3039 return element();
3040 }
3041
3042 void java_lang_StackTraceElement::fill_in(Handle element,
3043 InstanceKlass* holder, const methodHandle& method,
3044 int version, int bci, Symbol* name, TRAPS) {
3045 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
3046
3047 ResourceMark rm(THREAD);
3048 HandleMark hm(THREAD);
3049
3050 // Fill in class name
3051 Handle java_class(THREAD, holder->java_mirror());
3052 oop classname = java_lang_Class::name(java_class, CHECK);
3053 java_lang_StackTraceElement::set_declaringClass(element(), classname);
3054 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
3055
3056 oop loader = holder->class_loader();
3057 if (loader != NULL) {
3058 oop loader_name = java_lang_ClassLoader::name(loader);
3059 if (loader_name != NULL)
3060 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
3061 }
3062
3063 // Fill in method name
3064 oop methodname = StringTable::intern(name, CHECK);
3065 java_lang_StackTraceElement::set_methodName(element(), methodname);
3066
3067 // Fill in module name and version
3068 ModuleEntry* module = holder->module();
3069 if (module->is_named()) {
3070 oop module_name = StringTable::intern(module->name(), CHECK);
3071 java_lang_StackTraceElement::set_moduleName(element(), module_name);
3072 oop module_version;
3073 if (module->version() != NULL) {
3074 module_version = StringTable::intern(module->version(), CHECK);
3075 } else {
3076 module_version = NULL;
3077 }
3078 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
3079 }
3080
3081 if (method() == NULL || !version_matches(method(), version)) {
3082 // The method was redefined, accurate line number information isn't available
3083 java_lang_StackTraceElement::set_fileName(element(), NULL);
3084 java_lang_StackTraceElement::set_lineNumber(element(), -1);
3085 } else {
3086 Symbol* source;
3087 oop source_file;
3088 int line_number;
3089 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
3090
3091 java_lang_StackTraceElement::set_fileName(element(), source_file);
3092 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
3093 }
3094 }
3095
3096 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
3097 InstanceKlass* holder,
3098 int version,
3099 const methodHandle& method,
3100 int bci,
3101 Symbol*& source,
3102 oop& source_file,
3103 int& line_number, TRAPS) {
3104 // Fill in source file name and line number.
3105 source = Backtrace::get_source_file_name(holder, version);
3106 source_file = java_lang_Class::source_file(java_class());
3107 if (source != NULL) {
3108 // Class was not redefined. We can trust its cache if set,
3109 // else we have to initialize it.
3110 if (source_file == NULL) {
3111 source_file = StringTable::intern(source, CHECK);
3112 java_lang_Class::set_source_file(java_class(), source_file);
3113 }
3114 } else {
3115 // Class was redefined. Dump the cache if it was set.
3116 if (source_file != NULL) {
3117 source_file = NULL;
3118 java_lang_Class::set_source_file(java_class(), source_file);
3119 }
3120 }
3121 line_number = Backtrace::get_line_number(method(), bci);
3122 }
3123
3124 #if INCLUDE_JVMCI
3125 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
3126 Symbol*& filename, int& line_number, TRAPS) {
3127 ResourceMark rm(THREAD);
3128 HandleMark hm(THREAD);
3129
3130 filename = NULL;
3131 line_number = -1;
3132
3133 oop source_file;
3134 int version = method->constants()->version();
3135 InstanceKlass* holder = method->method_holder();
3136 Handle java_class(THREAD, holder->java_mirror());
3137 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
3138 }
3139 #endif // INCLUDE_JVMCI
3140
3141 // java_lang_StackFrameInfo
3142
3143 int java_lang_StackFrameInfo::_memberName_offset;
3144 int java_lang_StackFrameInfo::_bci_offset;
3145 int java_lang_StackFrameInfo::_version_offset;
3146 int java_lang_StackFrameInfo::_contScope_offset;
3147
3148 #define STACKFRAMEINFO_FIELDS_DO(macro) \
3149 macro(_memberName_offset, k, "memberName", object_signature, false); \
3150 macro(_bci_offset, k, "bci", int_signature, false); \
3151 macro(_contScope_offset, k, "contScope", continuationscope_signature, false)
3152
3153 void java_lang_StackFrameInfo::compute_offsets() {
3154 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
3155 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3156 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3157 }
3158
3159 #if INCLUDE_CDS
3160 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
3161 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3162 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3163 }
3164 #endif
3165
3166 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
3167 HandleMark hm(THREAD);
3168 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
3169 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
3170 // we should expand MemberName::name when Throwable uses StackTrace
3171 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
3172 return method;
3173 }
3174
3175 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) {
3176 // set Method* or mid/cpref
3177 HandleMark hm(THREAD);
3178 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
3179 Handle cont_h (THREAD, cont);
3180 InstanceKlass* ik = method->method_holder();
3181 CallInfo info(method(), ik, CHECK);
3182 MethodHandles::init_method_MemberName(mname, info);
3183 // set bci
3184 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
3185 // method may be redefined; store the version
3186 int version = method->constants()->version();
3187 assert((jushort)version == version, "version should be short");
3188 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
3189
3190 oop contScope = cont_h() != NULL ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)NULL;
3191 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope);
3192 }
3193
3194 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
3195 ResourceMark rm(THREAD);
3196 HandleMark hm(THREAD);
3197 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
3198 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
3199 InstanceKlass* holder = InstanceKlass::cast(clazz);
3200 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
3201
3202 short version = stackFrame->short_field(_version_offset);
3203 int bci = stackFrame->int_field(_bci_offset);
3204 Symbol* name = method->name();
3205 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK);
3206 }
3207
3208 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3209 element->short_field_put(_version_offset, value);
3210 }
3211
3212 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3213 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
3214 element->int_field_put(_bci_offset, value);
3215 }
3216
3217 void java_lang_StackFrameInfo::set_contScope(oop element, oop value) {
3218 element->obj_field_put(_contScope_offset, value);
3219 }
3220
3221 int java_lang_LiveStackFrameInfo::_monitors_offset;
3222 int java_lang_LiveStackFrameInfo::_locals_offset;
3223 int java_lang_LiveStackFrameInfo::_operands_offset;
3224 int java_lang_LiveStackFrameInfo::_mode_offset;
3225
3226 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
3227 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
3228 macro(_locals_offset, k, "locals", object_array_signature, false); \
3229 macro(_operands_offset, k, "operands", object_array_signature, false); \
3230 macro(_mode_offset, k, "mode", int_signature, false)
3231
3232 void java_lang_LiveStackFrameInfo::compute_offsets() {
3233 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
3234 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3235 }
3236
3237 #if INCLUDE_CDS
3238 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3239 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3240 }
3241 #endif
3242
3243 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3244 element->obj_field_put(_monitors_offset, value);
3245 }
3246
3247 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3248 element->obj_field_put(_locals_offset, value);
3249 }
3250
3251 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3252 element->obj_field_put(_operands_offset, value);
3253 }
3254
3255 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
3256 element->int_field_put(_mode_offset, value);
3257 }
3258
3259
3260 // java_lang_AccessibleObject
3261
3262 int java_lang_reflect_AccessibleObject::_override_offset;
3263
3264 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3265 macro(_override_offset, k, "override", bool_signature, false)
3266
3267 void java_lang_reflect_AccessibleObject::compute_offsets() {
3268 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3269 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3270 }
3271
3272 #if INCLUDE_CDS
3273 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3274 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3275 }
3276 #endif
3277
3278 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3279 return (jboolean) reflect->bool_field(_override_offset);
3280 }
3281
3282 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3283 reflect->bool_field_put(_override_offset, (int) value);
3284 }
3285
3286 // java_lang_reflect_Method
3287
3288 int java_lang_reflect_Method::_clazz_offset;
3289 int java_lang_reflect_Method::_name_offset;
3290 int java_lang_reflect_Method::_returnType_offset;
3291 int java_lang_reflect_Method::_parameterTypes_offset;
3292 int java_lang_reflect_Method::_exceptionTypes_offset;
3293 int java_lang_reflect_Method::_slot_offset;
3294 int java_lang_reflect_Method::_modifiers_offset;
3295 int java_lang_reflect_Method::_signature_offset;
3296 int java_lang_reflect_Method::_annotations_offset;
3297 int java_lang_reflect_Method::_parameter_annotations_offset;
3298 int java_lang_reflect_Method::_annotation_default_offset;
3299
3300 #define METHOD_FIELDS_DO(macro) \
3301 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3302 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3303 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3304 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3305 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3306 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3307 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3308 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3309 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3310 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3311 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3312
3313 void java_lang_reflect_Method::compute_offsets() {
3314 InstanceKlass* k = vmClasses::reflect_Method_klass();
3315 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3316 }
3317
3318 #if INCLUDE_CDS
3319 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3320 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3321 }
3322 #endif
3323
3324 Handle java_lang_reflect_Method::create(TRAPS) {
3325 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3326 Klass* klass = vmClasses::reflect_Method_klass();
3327 // This class is eagerly initialized during VM initialization, since we keep a reference
3328 // to one of the methods
3329 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3330 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3331 }
3332
3333 oop java_lang_reflect_Method::clazz(oop reflect) {
3334 return reflect->obj_field(_clazz_offset);
3335 }
3336
3337 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3338 reflect->obj_field_put(_clazz_offset, value);
3339 }
3340
3341 int java_lang_reflect_Method::slot(oop reflect) {
3342 return reflect->int_field(_slot_offset);
3343 }
3344
3345 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3346 reflect->int_field_put(_slot_offset, value);
3347 }
3348
3349 void java_lang_reflect_Method::set_name(oop method, oop value) {
3350 method->obj_field_put(_name_offset, value);
3351 }
3352
3353 oop java_lang_reflect_Method::return_type(oop method) {
3354 return method->obj_field(_returnType_offset);
3355 }
3356
3357 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3358 method->obj_field_put(_returnType_offset, value);
3359 }
3360
3361 oop java_lang_reflect_Method::parameter_types(oop method) {
3362 return method->obj_field(_parameterTypes_offset);
3363 }
3364
3365 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3366 method->obj_field_put(_parameterTypes_offset, value);
3367 }
3368
3369 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3370 method->obj_field_put(_exceptionTypes_offset, value);
3371 }
3372
3373 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3374 method->int_field_put(_modifiers_offset, value);
3375 }
3376
3377 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3378 method->obj_field_put(_signature_offset, value);
3379 }
3380
3381 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3382 method->obj_field_put(_annotations_offset, value);
3383 }
3384
3385 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3386 method->obj_field_put(_parameter_annotations_offset, value);
3387 }
3388
3389 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3390 method->obj_field_put(_annotation_default_offset, value);
3391 }
3392
3393 int java_lang_reflect_Constructor::_clazz_offset;
3394 int java_lang_reflect_Constructor::_parameterTypes_offset;
3395 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3396 int java_lang_reflect_Constructor::_slot_offset;
3397 int java_lang_reflect_Constructor::_modifiers_offset;
3398 int java_lang_reflect_Constructor::_signature_offset;
3399 int java_lang_reflect_Constructor::_annotations_offset;
3400 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3401
3402 #define CONSTRUCTOR_FIELDS_DO(macro) \
3403 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3404 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3405 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3406 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3407 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3408 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3409 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3410 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3411
3412 void java_lang_reflect_Constructor::compute_offsets() {
3413 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3414 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3415 }
3416
3417 #if INCLUDE_CDS
3418 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3419 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3420 }
3421 #endif
3422
3423 Handle java_lang_reflect_Constructor::create(TRAPS) {
3424 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3425 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3426 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3427 InstanceKlass* ik = InstanceKlass::cast(k);
3428 // Ensure it is initialized
3429 ik->initialize(CHECK_NH);
3430 return ik->allocate_instance_handle(THREAD);
3431 }
3432
3433 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3434 return reflect->obj_field(_clazz_offset);
3435 }
3436
3437 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3438 reflect->obj_field_put(_clazz_offset, value);
3439 }
3440
3441 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3442 return constructor->obj_field(_parameterTypes_offset);
3443 }
3444
3445 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3446 constructor->obj_field_put(_parameterTypes_offset, value);
3447 }
3448
3449 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3450 constructor->obj_field_put(_exceptionTypes_offset, value);
3451 }
3452
3453 int java_lang_reflect_Constructor::slot(oop reflect) {
3454 return reflect->int_field(_slot_offset);
3455 }
3456
3457 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3458 reflect->int_field_put(_slot_offset, value);
3459 }
3460
3461 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3462 constructor->int_field_put(_modifiers_offset, value);
3463 }
3464
3465 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3466 constructor->obj_field_put(_signature_offset, value);
3467 }
3468
3469 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3470 constructor->obj_field_put(_annotations_offset, value);
3471 }
3472
3473 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3474 method->obj_field_put(_parameter_annotations_offset, value);
3475 }
3476
3477 int java_lang_reflect_Field::_clazz_offset;
3478 int java_lang_reflect_Field::_name_offset;
3479 int java_lang_reflect_Field::_type_offset;
3480 int java_lang_reflect_Field::_slot_offset;
3481 int java_lang_reflect_Field::_modifiers_offset;
3482 int java_lang_reflect_Field::_trusted_final_offset;
3483 int java_lang_reflect_Field::_signature_offset;
3484 int java_lang_reflect_Field::_annotations_offset;
3485
3486 #define FIELD_FIELDS_DO(macro) \
3487 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3488 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3489 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3490 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3491 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3492 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3493 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3494 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3495
3496 void java_lang_reflect_Field::compute_offsets() {
3497 InstanceKlass* k = vmClasses::reflect_Field_klass();
3498 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3499 }
3500
3501 #if INCLUDE_CDS
3502 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3503 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3504 }
3505 #endif
3506
3507 Handle java_lang_reflect_Field::create(TRAPS) {
3508 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3509 Symbol* name = vmSymbols::java_lang_reflect_Field();
3510 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3511 InstanceKlass* ik = InstanceKlass::cast(k);
3512 // Ensure it is initialized
3513 ik->initialize(CHECK_NH);
3514 return ik->allocate_instance_handle(THREAD);
3515 }
3516
3517 oop java_lang_reflect_Field::clazz(oop reflect) {
3518 return reflect->obj_field(_clazz_offset);
3519 }
3520
3521 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3522 reflect->obj_field_put(_clazz_offset, value);
3523 }
3524
3525 oop java_lang_reflect_Field::name(oop field) {
3526 return field->obj_field(_name_offset);
3527 }
3528
3529 void java_lang_reflect_Field::set_name(oop field, oop value) {
3530 field->obj_field_put(_name_offset, value);
3531 }
3532
3533 oop java_lang_reflect_Field::type(oop field) {
3534 return field->obj_field(_type_offset);
3535 }
3536
3537 void java_lang_reflect_Field::set_type(oop field, oop value) {
3538 field->obj_field_put(_type_offset, value);
3539 }
3540
3541 int java_lang_reflect_Field::slot(oop reflect) {
3542 return reflect->int_field(_slot_offset);
3543 }
3544
3545 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3546 reflect->int_field_put(_slot_offset, value);
3547 }
3548
3549 int java_lang_reflect_Field::modifiers(oop field) {
3550 return field->int_field(_modifiers_offset);
3551 }
3552
3553 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3554 field->int_field_put(_modifiers_offset, value);
3555 }
3556
3557 void java_lang_reflect_Field::set_trusted_final(oop field) {
3558 field->bool_field_put(_trusted_final_offset, true);
3559 }
3560
3561 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3562 field->obj_field_put(_signature_offset, value);
3563 }
3564
3565 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3566 field->obj_field_put(_annotations_offset, value);
3567 }
3568
3569 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3570 // Allocate java.lang.reflect.RecordComponent instance
3571 HandleMark hm(THREAD);
3572 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3573 assert(ik != NULL, "must be loaded");
3574 ik->initialize(CHECK_NULL);
3575
3576 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3577
3578 Handle decl_class(THREAD, holder->java_mirror());
3579 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3580
3581 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3582 oop component_name = StringTable::intern(name, CHECK_NULL);
3583 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3584
3585 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3586 Handle component_type_h =
3587 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3588 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3589
3590 Method* accessor_method = NULL;
3591 {
3592 // Prepend "()" to type to create the full method signature.
3593 ResourceMark rm(THREAD);
3594 int sig_len = type->utf8_length() + 3; // "()" and null char
3595 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3596 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3597 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3598 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3599 }
3600
3601 if (accessor_method != NULL) {
3602 methodHandle method(THREAD, accessor_method);
3603 oop m = Reflection::new_method(method, false, CHECK_NULL);
3604 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3605 } else {
3606 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3607 }
3608
3609 int sig_index = component->generic_signature_index();
3610 if (sig_index > 0) {
3611 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3612 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3613 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3614 } else {
3615 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3616 }
3617
3618 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3619 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3620
3621 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3622 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3623
3624 return element();
3625 }
3626
3627 int reflect_ConstantPool::_oop_offset;
3628
3629 #define CONSTANTPOOL_FIELDS_DO(macro) \
3630 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3631
3632 void reflect_ConstantPool::compute_offsets() {
3633 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3634 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3635 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3636 }
3637
3638 #if INCLUDE_CDS
3639 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3640 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3641 }
3642 #endif
3643
3644 int java_lang_reflect_Parameter::_name_offset;
3645 int java_lang_reflect_Parameter::_modifiers_offset;
3646 int java_lang_reflect_Parameter::_index_offset;
3647 int java_lang_reflect_Parameter::_executable_offset;
3648
3649 #define PARAMETER_FIELDS_DO(macro) \
3650 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3651 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3652 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3653 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3654
3655 void java_lang_reflect_Parameter::compute_offsets() {
3656 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3657 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3658 }
3659
3660 #if INCLUDE_CDS
3661 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3662 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3663 }
3664 #endif
3665
3666 Handle java_lang_reflect_Parameter::create(TRAPS) {
3667 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3668 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3669 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3670 InstanceKlass* ik = InstanceKlass::cast(k);
3671 // Ensure it is initialized
3672 ik->initialize(CHECK_NH);
3673 return ik->allocate_instance_handle(THREAD);
3674 }
3675
3676 oop java_lang_reflect_Parameter::name(oop param) {
3677 return param->obj_field(_name_offset);
3678 }
3679
3680 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3681 param->obj_field_put(_name_offset, value);
3682 }
3683
3684 int java_lang_reflect_Parameter::modifiers(oop param) {
3685 return param->int_field(_modifiers_offset);
3686 }
3687
3688 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3689 param->int_field_put(_modifiers_offset, value);
3690 }
3691
3692 int java_lang_reflect_Parameter::index(oop param) {
3693 return param->int_field(_index_offset);
3694 }
3695
3696 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3697 param->int_field_put(_index_offset, value);
3698 }
3699
3700 oop java_lang_reflect_Parameter::executable(oop param) {
3701 return param->obj_field(_executable_offset);
3702 }
3703
3704 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3705 param->obj_field_put(_executable_offset, value);
3706 }
3707
3708 // java_lang_Module
3709
3710 int java_lang_Module::_loader_offset;
3711 int java_lang_Module::_name_offset;
3712 int java_lang_Module::_module_entry_offset;
3713
3714 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3715 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3716 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3717 vmSymbols::java_lang_module_init_signature(),
3718 loader, module_name, CHECK_NH);
3719 }
3720
3721 #define MODULE_FIELDS_DO(macro) \
3722 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3723 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3724
3725 void java_lang_Module::compute_offsets() {
3726 InstanceKlass* k = vmClasses::Module_klass();
3727 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3728 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3729 }
3730
3731 #if INCLUDE_CDS
3732 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3733 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3734 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3735 }
3736 #endif
3737
3738 oop java_lang_Module::loader(oop module) {
3739 return module->obj_field(_loader_offset);
3740 }
3741
3742 void java_lang_Module::set_loader(oop module, oop value) {
3743 module->obj_field_put(_loader_offset, value);
3744 }
3745
3746 oop java_lang_Module::name(oop module) {
3747 return module->obj_field(_name_offset);
3748 }
3749
3750 void java_lang_Module::set_name(oop module, oop value) {
3751 module->obj_field_put(_name_offset, value);
3752 }
3753
3754 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3755 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3756 assert(module != NULL, "module can't be null");
3757 assert(oopDesc::is_oop(module), "module must be oop");
3758
3759 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3760 return module_entry;
3761 }
3762
3763 ModuleEntry* java_lang_Module::module_entry(oop module) {
3764 ModuleEntry* module_entry = module_entry_raw(module);
3765 if (module_entry == NULL) {
3766 // If the inject field containing the ModuleEntry* is null then return the
3767 // class loader's unnamed module.
3768 oop loader = java_lang_Module::loader(module);
3769 Handle h_loader = Handle(Thread::current(), loader);
3770 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3771 return loader_cld->unnamed_module();
3772 }
3773 return module_entry;
3774 }
3775
3776 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3777 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3778 assert(module != NULL, "module can't be null");
3779 assert(oopDesc::is_oop(module), "module must be oop");
3780 module->address_field_put(_module_entry_offset, (address)module_entry);
3781 }
3782
3783 Handle reflect_ConstantPool::create(TRAPS) {
3784 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3785 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3786 // Ensure it is initialized
3787 k->initialize(CHECK_NH);
3788 return k->allocate_instance_handle(THREAD);
3789 }
3790
3791
3792 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3793 oop mirror = value->pool_holder()->java_mirror();
3794 // Save the mirror to get back the constant pool.
3795 reflect->obj_field_put(_oop_offset, mirror);
3796 }
3797
3798 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3799
3800 oop mirror = reflect->obj_field(_oop_offset);
3801 Klass* k = java_lang_Class::as_Klass(mirror);
3802 assert(k->is_instance_klass(), "Must be");
3803
3804 // Get the constant pool back from the klass. Since class redefinition
3805 // merges the new constant pool into the old, this is essentially the
3806 // same constant pool as the original. If constant pool merging is
3807 // no longer done in the future, this will have to change to save
3808 // the original.
3809 return InstanceKlass::cast(k)->constants();
3810 }
3811
3812 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3813
3814 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3815 macro(_base_offset, k, "base", object_signature, false)
3816
3817 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3818 InstanceKlass* k = vmClasses::reflect_UnsafeStaticFieldAccessorImpl_klass();
3819 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3820 }
3821
3822 #if INCLUDE_CDS
3823 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3824 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3825 }
3826 #endif
3827
3828 // Support for java_lang_ref_Reference
3829
3830 bool java_lang_ref_Reference::_offsets_initialized;
3831
3832 int java_lang_ref_Reference::_referent_offset;
3833 int java_lang_ref_Reference::_queue_offset;
3834 int java_lang_ref_Reference::_next_offset;
3835 int java_lang_ref_Reference::_discovered_offset;
3836
3837 #define REFERENCE_FIELDS_DO(macro) \
3838 macro(_referent_offset, k, "referent", object_signature, false); \
3839 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3840 macro(_next_offset, k, "next", reference_signature, false); \
3841 macro(_discovered_offset, k, "discovered", reference_signature, false);
3842
3843 void java_lang_ref_Reference::compute_offsets() {
3844 if (_offsets_initialized) {
3845 return;
3846 }
3847 _offsets_initialized = true;
3848 InstanceKlass* k = vmClasses::Reference_klass();
3849 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3850 }
3851
3852 #if INCLUDE_CDS
3853 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3854 f->do_bool(&_offsets_initialized);
3855 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3856 }
3857 #endif
3858
3859 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3860 assert(obj != NULL, "sanity");
3861 if (offset != _referent_offset) {
3862 return false;
3863 }
3864
3865 Klass* k = obj->klass();
3866 if (!k->is_instance_klass()) {
3867 return false;
3868 }
3869
3870 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3871 bool is_reference = ik->reference_type() != REF_NONE;
3872 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3873 return is_reference;
3874 }
3875
3876 int java_lang_boxing_object::_value_offset;
3877 int java_lang_boxing_object::_long_value_offset;
3878
3879 #define BOXING_FIELDS_DO(macro) \
3880 macro(_value_offset, integerKlass, "value", int_signature, false); \
3881 macro(_long_value_offset, longKlass, "value", long_signature, false);
3882
3883 void java_lang_boxing_object::compute_offsets() {
3884 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3885 InstanceKlass* longKlass = vmClasses::Long_klass();
3886 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3887 }
3888
3889 #if INCLUDE_CDS
3890 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3891 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3892 }
3893 #endif
3894
3895 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3896 Klass* k = vmClasses::box_klass(type);
3897 if (k == NULL) return NULL;
3898 InstanceKlass* ik = InstanceKlass::cast(k);
3899 if (!ik->is_initialized()) {
3900 ik->initialize(CHECK_NULL);
3901 }
3902 return ik->allocate_instance(THREAD);
3903 }
3904
3905
3906 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3907 oop box = initialize_and_allocate(type, CHECK_NULL);
3908 if (box == NULL) return NULL;
3909 switch (type) {
3910 case T_BOOLEAN:
3911 box->bool_field_put(_value_offset, value->z);
3912 break;
3913 case T_CHAR:
3914 box->char_field_put(_value_offset, value->c);
3915 break;
3916 case T_FLOAT:
3917 box->float_field_put(_value_offset, value->f);
3918 break;
3919 case T_DOUBLE:
3920 box->double_field_put(_long_value_offset, value->d);
3921 break;
3922 case T_BYTE:
3923 box->byte_field_put(_value_offset, value->b);
3924 break;
3925 case T_SHORT:
3926 box->short_field_put(_value_offset, value->s);
3927 break;
3928 case T_INT:
3929 box->int_field_put(_value_offset, value->i);
3930 break;
3931 case T_LONG:
3932 box->long_field_put(_long_value_offset, value->j);
3933 break;
3934 default:
3935 return NULL;
3936 }
3937 return box;
3938 }
3939
3940
3941 BasicType java_lang_boxing_object::basic_type(oop box) {
3942 if (box == NULL) return T_ILLEGAL;
3943 BasicType type = vmClasses::box_klass_type(box->klass());
3944 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3945 return T_ILLEGAL;
3946 return type;
3947 }
3948
3949
3950 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3951 BasicType type = vmClasses::box_klass_type(box->klass());
3952 switch (type) {
3953 case T_BOOLEAN:
3954 value->z = box->bool_field(_value_offset);
3955 break;
3956 case T_CHAR:
3957 value->c = box->char_field(_value_offset);
3958 break;
3959 case T_FLOAT:
3960 value->f = box->float_field(_value_offset);
3961 break;
3962 case T_DOUBLE:
3963 value->d = box->double_field(_long_value_offset);
3964 break;
3965 case T_BYTE:
3966 value->b = box->byte_field(_value_offset);
3967 break;
3968 case T_SHORT:
3969 value->s = box->short_field(_value_offset);
3970 break;
3971 case T_INT:
3972 value->i = box->int_field(_value_offset);
3973 break;
3974 case T_LONG:
3975 value->j = box->long_field(_long_value_offset);
3976 break;
3977 default:
3978 return T_ILLEGAL;
3979 } // end switch
3980 return type;
3981 }
3982
3983
3984 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3985 BasicType type = vmClasses::box_klass_type(box->klass());
3986 switch (type) {
3987 case T_BOOLEAN:
3988 box->bool_field_put(_value_offset, value->z);
3989 break;
3990 case T_CHAR:
3991 box->char_field_put(_value_offset, value->c);
3992 break;
3993 case T_FLOAT:
3994 box->float_field_put(_value_offset, value->f);
3995 break;
3996 case T_DOUBLE:
3997 box->double_field_put(_long_value_offset, value->d);
3998 break;
3999 case T_BYTE:
4000 box->byte_field_put(_value_offset, value->b);
4001 break;
4002 case T_SHORT:
4003 box->short_field_put(_value_offset, value->s);
4004 break;
4005 case T_INT:
4006 box->int_field_put(_value_offset, value->i);
4007 break;
4008 case T_LONG:
4009 box->long_field_put(_long_value_offset, value->j);
4010 break;
4011 default:
4012 return T_ILLEGAL;
4013 } // end switch
4014 return type;
4015 }
4016
4017
4018 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4019 switch (type) {
4020 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4021 case T_CHAR: st->print("%d", value->c); break;
4022 case T_BYTE: st->print("%d", value->b); break;
4023 case T_SHORT: st->print("%d", value->s); break;
4024 case T_INT: st->print("%d", value->i); break;
4025 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4026 case T_FLOAT: st->print("%f", value->f); break;
4027 case T_DOUBLE: st->print("%lf", value->d); break;
4028 default: st->print("type %d?", type); break;
4029 }
4030 }
4031
4032
4033 // Support for java_lang_ref_SoftReference
4034 //
4035
4036 int java_lang_ref_SoftReference::_timestamp_offset;
4037 int java_lang_ref_SoftReference::_static_clock_offset;
4038
4039 #define SOFTREFERENCE_FIELDS_DO(macro) \
4040 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
4041 macro(_static_clock_offset, k, "clock", long_signature, true)
4042
4043 void java_lang_ref_SoftReference::compute_offsets() {
4044 InstanceKlass* k = vmClasses::SoftReference_klass();
4045 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4046 }
4047
4048 #if INCLUDE_CDS
4049 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
4050 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4051 }
4052 #endif
4053
4054 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
4055 return ref->long_field(_timestamp_offset);
4056 }
4057
4058 jlong java_lang_ref_SoftReference::clock() {
4059 InstanceKlass* ik = vmClasses::SoftReference_klass();
4060 oop base = ik->static_field_base_raw();
4061 return base->long_field(_static_clock_offset);
4062 }
4063
4064 void java_lang_ref_SoftReference::set_clock(jlong value) {
4065 InstanceKlass* ik = vmClasses::SoftReference_klass();
4066 oop base = ik->static_field_base_raw();
4067 base->long_field_put(_static_clock_offset, value);
4068 }
4069
4070 // Support for java_lang_invoke_DirectMethodHandle
4071
4072 int java_lang_invoke_DirectMethodHandle::_member_offset;
4073
4074 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
4075 oop member_name = NULL;
4076 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
4077 "a DirectMethodHandle oop is expected");
4078 return dmh->obj_field(_member_offset);
4079 }
4080
4081 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
4082 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
4083
4084 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
4085 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
4086 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4087 }
4088
4089 #if INCLUDE_CDS
4090 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
4091 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4092 }
4093 #endif
4094
4095 // Support for java_lang_invoke_MethodHandle
4096
4097 int java_lang_invoke_MethodHandle::_type_offset;
4098 int java_lang_invoke_MethodHandle::_form_offset;
4099
4100 int java_lang_invoke_MemberName::_clazz_offset;
4101 int java_lang_invoke_MemberName::_name_offset;
4102 int java_lang_invoke_MemberName::_type_offset;
4103 int java_lang_invoke_MemberName::_flags_offset;
4104 int java_lang_invoke_MemberName::_method_offset;
4105 int java_lang_invoke_MemberName::_vmindex_offset;
4106
4107 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
4108 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
4109
4110 int java_lang_invoke_LambdaForm::_vmentry_offset;
4111
4112 #define METHODHANDLE_FIELDS_DO(macro) \
4113 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
4114 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
4115
4116 void java_lang_invoke_MethodHandle::compute_offsets() {
4117 InstanceKlass* k = vmClasses::MethodHandle_klass();
4118 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4119 }
4120
4121 #if INCLUDE_CDS
4122 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
4123 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4124 }
4125 #endif
4126
4127 #define MEMBERNAME_FIELDS_DO(macro) \
4128 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
4129 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
4130 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
4131 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
4132 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
4133
4134 void java_lang_invoke_MemberName::compute_offsets() {
4135 InstanceKlass* k = vmClasses::MemberName_klass();
4136 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4137 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4138 }
4139
4140 #if INCLUDE_CDS
4141 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
4142 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4143 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4144 }
4145 #endif
4146
4147 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
4148 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4149 assert(k != NULL, "jdk mismatch");
4150 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4151 }
4152
4153 #if INCLUDE_CDS
4154 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
4155 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4156 }
4157 #endif
4158
4159 #define LAMBDAFORM_FIELDS_DO(macro) \
4160 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
4161
4162 void java_lang_invoke_LambdaForm::compute_offsets() {
4163 InstanceKlass* k = vmClasses::LambdaForm_klass();
4164 assert (k != NULL, "jdk mismatch");
4165 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4166 }
4167
4168 #if INCLUDE_CDS
4169 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
4170 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4171 }
4172 #endif
4173
4174 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
4175 return obj != NULL && is_subclass(obj->klass());
4176 }
4177
4178 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset;
4179 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset;
4180
4181 #define NEP_FIELDS_DO(macro) \
4182 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
4183 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false);
4184
4185 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) {
4186 return obj != NULL && is_subclass(obj->klass());
4187 }
4188
4189 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() {
4190 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
4191 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4192 }
4193
4194 #if INCLUDE_CDS
4195 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
4196 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4197 }
4198 #endif
4199
4200 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) {
4201 return entry->obj_field(_method_type_offset);
4202 }
4203
4204 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) {
4205 return entry->long_field(_downcall_stub_address_offset);
4206 }
4207
4208 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset;
4209 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset;
4210 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset;
4211 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset;
4212 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset;
4213 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset;
4214 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset;
4215
4216 #define ABIDescriptor_FIELDS_DO(macro) \
4217 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4218 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4219 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4220 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4221 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4222 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4223 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4224
4225 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) {
4226 return obj != NULL && is_subclass(obj->klass());
4227 }
4228
4229 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4230 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4231 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4232 }
4233
4234 #if INCLUDE_CDS
4235 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4236 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4237 }
4238 #endif
4239
4240 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4241 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4242 }
4243
4244 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4245 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4246 }
4247
4248 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4249 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4250 }
4251
4252 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4253 return entry->int_field(_stackAlignment_offset);
4254 }
4255
4256 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4257 return entry->int_field(_shadowSpace_offset);
4258 }
4259
4260 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4261 return entry->obj_field(_scratch1_offset);
4262 }
4263
4264 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4265 return entry->obj_field(_scratch2_offset);
4266 }
4267
4268 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4269 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4270 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset;
4271 int jdk_internal_foreign_abi_VMStorage::_debugName_offset;
4272
4273 #define VMStorage_FIELDS_DO(macro) \
4274 macro(_type_offset, k, "type", byte_signature, false); \
4275 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \
4276 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \
4277 macro(_debugName_offset, k, "debugName", string_signature, false); \
4278
4279 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) {
4280 return obj != NULL && is_subclass(obj->klass());
4281 }
4282
4283 void jdk_internal_foreign_abi_VMStorage::compute_offsets() {
4284 InstanceKlass* k = vmClasses::VMStorage_klass();
4285 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4286 }
4287
4288 #if INCLUDE_CDS
4289 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) {
4290 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4291 }
4292 #endif
4293
4294 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) {
4295 return entry->byte_field(_type_offset);
4296 }
4297
4298 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) {
4299 return entry->int_field(_indexOrOffset_offset);
4300 }
4301
4302 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) {
4303 return entry->short_field(_segmentMaskOrSize_offset);
4304 }
4305
4306 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) {
4307 return entry->obj_field(_debugName_offset);
4308 }
4309
4310 int jdk_internal_foreign_abi_CallConv::_argRegs_offset;
4311 int jdk_internal_foreign_abi_CallConv::_retRegs_offset;
4312
4313 #define CallConv_FIELDS_DO(macro) \
4314 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4315 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4316
4317 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4318 return obj != NULL && is_subclass(obj->klass());
4319 }
4320
4321 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4322 InstanceKlass* k = vmClasses::CallConv_klass();
4323 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4324 }
4325
4326 #if INCLUDE_CDS
4327 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4328 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4329 }
4330 #endif
4331
4332 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4333 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4334 }
4335
4336 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4337 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4338 }
4339
4340 oop java_lang_invoke_MethodHandle::type(oop mh) {
4341 return mh->obj_field(_type_offset);
4342 }
4343
4344 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4345 mh->obj_field_put(_type_offset, mtype);
4346 }
4347
4348 oop java_lang_invoke_MethodHandle::form(oop mh) {
4349 assert(_form_offset != 0, "");
4350 return mh->obj_field(_form_offset);
4351 }
4352
4353 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4354 assert(_form_offset != 0, "");
4355 mh->obj_field_put(_form_offset, lform);
4356 }
4357
4358 /// MemberName accessors
4359
4360 oop java_lang_invoke_MemberName::clazz(oop mname) {
4361 assert(is_instance(mname), "wrong type");
4362 return mname->obj_field(_clazz_offset);
4363 }
4364
4365 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4366 assert(is_instance(mname), "wrong type");
4367 mname->obj_field_put(_clazz_offset, clazz);
4368 }
4369
4370 oop java_lang_invoke_MemberName::name(oop mname) {
4371 assert(is_instance(mname), "wrong type");
4372 return mname->obj_field(_name_offset);
4373 }
4374
4375 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4376 assert(is_instance(mname), "wrong type");
4377 mname->obj_field_put(_name_offset, name);
4378 }
4379
4380 oop java_lang_invoke_MemberName::type(oop mname) {
4381 assert(is_instance(mname), "wrong type");
4382 return mname->obj_field(_type_offset);
4383 }
4384
4385 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4386 assert(is_instance(mname), "wrong type");
4387 mname->obj_field_put(_type_offset, type);
4388 }
4389
4390 int java_lang_invoke_MemberName::flags(oop mname) {
4391 assert(is_instance(mname), "wrong type");
4392 return mname->int_field(_flags_offset);
4393 }
4394
4395 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4396 assert(is_instance(mname), "wrong type");
4397 mname->int_field_put(_flags_offset, flags);
4398 }
4399
4400
4401 // Return vmtarget from ResolvedMethodName method field through indirection
4402 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4403 assert(is_instance(mname), "wrong type");
4404 oop method = mname->obj_field(_method_offset);
4405 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4406 }
4407
4408 bool java_lang_invoke_MemberName::is_method(oop mname) {
4409 assert(is_instance(mname), "must be MemberName");
4410 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4411 }
4412
4413 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4414 assert(is_instance(mname), "wrong type");
4415 mname->obj_field_put(_method_offset, resolved_method);
4416 }
4417
4418 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4419 assert(is_instance(mname), "wrong type");
4420 return (intptr_t) mname->address_field(_vmindex_offset);
4421 }
4422
4423 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4424 assert(is_instance(mname), "wrong type");
4425 mname->address_field_put(_vmindex_offset, (address) index);
4426 }
4427
4428
4429 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4430 assert(is_instance(resolved_method), "wrong type");
4431 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4432 assert(m->is_method(), "must be");
4433 return m;
4434 }
4435
4436 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4437 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4438 assert(is_instance(resolved_method), "wrong type");
4439 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4440 }
4441
4442 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4443 assert(is_instance(resolved_method), "wrong type");
4444 resolved_method->obj_field_put(_vmholder_offset, holder);
4445 }
4446
4447 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4448 const Method* method = m();
4449
4450 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4451 oop resolved_method = ResolvedMethodTable::find_method(method);
4452 if (resolved_method != NULL) {
4453 return resolved_method;
4454 }
4455
4456 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4457 if (!k->is_initialized()) {
4458 k->initialize(CHECK_NULL);
4459 }
4460
4461 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4462
4463 NoSafepointVerifier nsv;
4464
4465 if (method->is_old()) {
4466 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4467 method->get_new_method();
4468 }
4469
4470 InstanceKlass* holder = method->method_holder();
4471
4472 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4473 // Add a reference to the loader (actually mirror because hidden classes may not have
4474 // distinct loaders) to ensure the metadata is kept alive.
4475 // This mirror may be different than the one in clazz field.
4476 set_vmholder(new_resolved_method, holder->java_mirror());
4477
4478 // Set flag in class to indicate this InstanceKlass has entries in the table
4479 // to avoid walking table during redefinition if none of the redefined classes
4480 // have any membernames in the table.
4481 holder->set_has_resolved_methods();
4482
4483 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4484 }
4485
4486 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4487 assert(is_instance(lform), "wrong type");
4488 return lform->obj_field(_vmentry_offset);
4489 }
4490
4491
4492 // Support for java_lang_invoke_MethodType
4493
4494 int java_lang_invoke_MethodType::_rtype_offset;
4495 int java_lang_invoke_MethodType::_ptypes_offset;
4496
4497 #define METHODTYPE_FIELDS_DO(macro) \
4498 macro(_rtype_offset, k, "rtype", class_signature, false); \
4499 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4500
4501 void java_lang_invoke_MethodType::compute_offsets() {
4502 InstanceKlass* k = vmClasses::MethodType_klass();
4503 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4504 }
4505
4506 #if INCLUDE_CDS
4507 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4508 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4509 }
4510 #endif
4511
4512 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4513 st->print("(");
4514 objArrayOop pts = ptypes(mt);
4515 if (pts != NULL) {
4516 for (int i = 0, limit = pts->length(); i < limit; i++) {
4517 java_lang_Class::print_signature(pts->obj_at(i), st);
4518 }
4519 } else {
4520 st->print("NULL");
4521 }
4522 st->print(")");
4523 oop rt = rtype(mt);
4524 if (rt != NULL) {
4525 java_lang_Class::print_signature(rt, st);
4526 } else {
4527 st->print("NULL");
4528 }
4529 }
4530
4531 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4532 ResourceMark rm;
4533 stringStream buffer(128);
4534 print_signature(mt, &buffer);
4535 const char* sigstr = buffer.base();
4536 int siglen = (int) buffer.size();
4537 Symbol *name;
4538 if (!intern_if_not_found) {
4539 name = SymbolTable::probe(sigstr, siglen);
4540 } else {
4541 name = SymbolTable::new_symbol(sigstr, siglen);
4542 }
4543 return name;
4544 }
4545
4546 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4547 if (mt1 == mt2)
4548 return true;
4549 if (rtype(mt1) != rtype(mt2))
4550 return false;
4551 if (ptype_count(mt1) != ptype_count(mt2))
4552 return false;
4553 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4554 if (ptype(mt1, i) != ptype(mt2, i))
4555 return false;
4556 }
4557 return true;
4558 }
4559
4560 oop java_lang_invoke_MethodType::rtype(oop mt) {
4561 assert(is_instance(mt), "must be a MethodType");
4562 return mt->obj_field(_rtype_offset);
4563 }
4564
4565 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4566 assert(is_instance(mt), "must be a MethodType");
4567 return (objArrayOop) mt->obj_field(_ptypes_offset);
4568 }
4569
4570 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4571 return ptypes(mt)->obj_at(idx);
4572 }
4573
4574 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4575 return ptypes(mt)->length();
4576 }
4577
4578 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4579 objArrayOop pts = ptypes(mt);
4580 int count = pts->length();
4581 int slots = 0;
4582 for (int i = 0; i < count; i++) {
4583 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4584 slots += type2size[bt];
4585 }
4586 return slots;
4587 }
4588
4589 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4590 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4591 return type2size[bt];
4592 }
4593
4594
4595 // Support for java_lang_invoke_CallSite
4596
4597 int java_lang_invoke_CallSite::_target_offset;
4598 int java_lang_invoke_CallSite::_context_offset;
4599
4600 #define CALLSITE_FIELDS_DO(macro) \
4601 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4602 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4603
4604 void java_lang_invoke_CallSite::compute_offsets() {
4605 InstanceKlass* k = vmClasses::CallSite_klass();
4606 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4607 }
4608
4609 #if INCLUDE_CDS
4610 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4611 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4612 }
4613 #endif
4614
4615 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4616 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4617
4618 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4619 return dep_oop;
4620 }
4621
4622 // Support for java_lang_invoke_ConstantCallSite
4623
4624 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4625
4626 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4627 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4628
4629 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4630 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4631 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4632 }
4633
4634 #if INCLUDE_CDS
4635 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4636 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4637 }
4638 #endif
4639
4640 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4641
4642 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4643 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4644
4645 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4646 InstanceKlass* k = vmClasses::Context_klass();
4647 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4648 }
4649
4650 #if INCLUDE_CDS
4651 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4652 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4653 }
4654 #endif
4655
4656 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4657 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4658 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4659 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4660 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4661 return dep_ctx;
4662 }
4663
4664 // Support for java_security_AccessControlContext
4665
4666 int java_security_AccessControlContext::_context_offset;
4667 int java_security_AccessControlContext::_privilegedContext_offset;
4668 int java_security_AccessControlContext::_isPrivileged_offset;
4669 int java_security_AccessControlContext::_isAuthorized_offset;
4670
4671 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4672 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4673 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4674 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4675 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4676
4677 void java_security_AccessControlContext::compute_offsets() {
4678 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4679 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4680 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4681 }
4682
4683 #if INCLUDE_CDS
4684 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4685 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4686 }
4687 #endif
4688
4689 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4690 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4691 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4692 // Ensure klass is initialized
4693 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4694 // Allocate result
4695 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4696 // Fill in values
4697 result->obj_field_put(_context_offset, context());
4698 result->obj_field_put(_privilegedContext_offset, privileged_context());
4699 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4700 result->bool_field_put(_isAuthorized_offset, true);
4701 return result;
4702 }
4703
4704
4705 // Support for java_lang_ClassLoader
4706
4707 int java_lang_ClassLoader::_loader_data_offset;
4708 int java_lang_ClassLoader::_parallelCapable_offset;
4709 int java_lang_ClassLoader::_name_offset;
4710 int java_lang_ClassLoader::_nameAndId_offset;
4711 int java_lang_ClassLoader::_unnamedModule_offset;
4712 int java_lang_ClassLoader::_parent_offset;
4713
4714 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4715 assert(loader != NULL, "loader must not be NULL");
4716 assert(oopDesc::is_oop(loader), "loader must be oop");
4717 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4718 }
4719
4720 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4721 assert(loader != NULL, "loader must not be NULL");
4722 assert(oopDesc::is_oop(loader), "loader must be oop");
4723 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4724 }
4725
4726 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4727 assert(loader != NULL, "loader must not be NULL");
4728 assert(oopDesc::is_oop(loader), "loader must be oop");
4729 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4730 }
4731
4732 #define CLASSLOADER_FIELDS_DO(macro) \
4733 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4734 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4735 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4736 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4737 macro(_parent_offset, k1, "parent", classloader_signature, false)
4738
4739 void java_lang_ClassLoader::compute_offsets() {
4740 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4741 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4742
4743 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4744 }
4745
4746 #if INCLUDE_CDS
4747 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4748 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4749 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4750 }
4751 #endif
4752
4753 oop java_lang_ClassLoader::parent(oop loader) {
4754 assert(is_instance(loader), "loader must be oop");
4755 return loader->obj_field(_parent_offset);
4756 }
4757
4758 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) {
4759 assert(is_instance(loader), "loader must be oop");
4760 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset);
4761 }
4762
4763 // Returns the name field of this class loader. If the name field has not
4764 // been set, null will be returned.
4765 oop java_lang_ClassLoader::name(oop loader) {
4766 assert(is_instance(loader), "loader must be oop");
4767 return loader->obj_field(_name_offset);
4768 }
4769
4770 // Returns the nameAndId field of this class loader. The format is
4771 // as follows:
4772 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4773 // If the defining loader has no name then <qualified-class-name> @<id>
4774 // If built-in loader, then omit '@<id>' as there is only one instance.
4775 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4776 oop java_lang_ClassLoader::nameAndId(oop loader) {
4777 assert(is_instance(loader), "loader must be oop");
4778 return loader->obj_field(_nameAndId_offset);
4779 }
4780
4781 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4782 assert(is_instance(loader), "loader must be oop");
4783 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4784 oop acl = loader;
4785 debug_only(jint loop_count = 0);
4786 // This loop taken verbatim from ClassLoader.java:
4787 do {
4788 acl = parent(acl);
4789 if (cl == acl) {
4790 return true;
4791 }
4792 assert(++loop_count > 0, "loop_count overflow");
4793 } while (acl != NULL);
4794 return false;
4795 }
4796
4797 bool java_lang_ClassLoader::is_instance(oop obj) {
4798 return obj != NULL && is_subclass(obj->klass());
4799 }
4800
4801
4802 // For class loader classes, parallelCapable defined
4803 // based on non-null field
4804 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4805 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4806 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4807 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4808 }
4809
4810 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4811 // Fix for 4474172; see evaluation for more details
4812 loader = non_reflection_class_loader(loader);
4813
4814 oop cl = SystemDictionary::java_system_loader();
4815 while(cl != NULL) {
4816 if (cl == loader) return true;
4817 cl = parent(cl);
4818 }
4819 return false;
4820 }
4821
4822 // Return true if this is one of the class loaders associated with
4823 // the generated bytecodes for reflection.
4824 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4825 if (loader != NULL) {
4826 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4827 // This might be null in non-1.4 JDKs
4828 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4829 }
4830 return false;
4831 }
4832
4833 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4834 // See whether this is one of the class loaders associated with
4835 // the generated bytecodes for reflection, and if so, "magically"
4836 // delegate to its parent to prevent class loading from occurring
4837 // in places where applications using reflection didn't expect it.
4838 if (is_reflection_class_loader(loader)) {
4839 return parent(loader);
4840 }
4841 return loader;
4842 }
4843
4844 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4845 assert(is_instance(loader), "loader must be oop");
4846 return loader->obj_field(_unnamedModule_offset);
4847 }
4848
4849 // Support for java_lang_System
4850 //
4851
4852 int java_lang_System::_static_in_offset;
4853 int java_lang_System::_static_out_offset;
4854 int java_lang_System::_static_err_offset;
4855 int java_lang_System::_static_security_offset;
4856 int java_lang_System::_static_allow_security_offset;
4857 int java_lang_System::_static_never_offset;
4858
4859 #define SYSTEM_FIELDS_DO(macro) \
4860 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4861 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4862 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4863 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4864 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4865 macro(_static_never_offset, k, "NEVER", int_signature, true)
4866
4867 void java_lang_System::compute_offsets() {
4868 InstanceKlass* k = vmClasses::System_klass();
4869 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4870 }
4871
4872 // This field tells us that a security manager can never be installed so we
4873 // can completely skip populating the ProtectionDomainCacheTable.
4874 bool java_lang_System::allow_security_manager() {
4875 static int initialized = false;
4876 static bool allowed = true; // default
4877 if (!initialized) {
4878 oop base = vmClasses::System_klass()->static_field_base_raw();
4879 int never = base->int_field(_static_never_offset);
4880 allowed = (base->int_field(_static_allow_security_offset) != never);
4881 initialized = true;
4882 }
4883 return allowed;
4884 }
4885
4886 // This field tells us that a security manager is installed.
4887 bool java_lang_System::has_security_manager() {
4888 oop base = vmClasses::System_klass()->static_field_base_raw();
4889 return base->obj_field(_static_security_offset) != NULL;
4890 }
4891
4892 #if INCLUDE_CDS
4893 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4894 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4895 }
4896 #endif
4897
4898 // Support for jdk_internal_misc_UnsafeConstants
4899 //
4900 class UnsafeConstantsFixup : public FieldClosure {
4901 private:
4902 int _address_size;
4903 int _page_size;
4904 bool _big_endian;
4905 bool _use_unaligned_access;
4906 int _data_cache_line_flush_size;
4907 public:
4908 UnsafeConstantsFixup() {
4909 // round up values for all static final fields
4910 _address_size = sizeof(void*);
4911 _page_size = os::vm_page_size();
4912 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4913 _use_unaligned_access = UseUnalignedAccesses;
4914 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4915 }
4916
4917 void do_field(fieldDescriptor* fd) {
4918 oop mirror = fd->field_holder()->java_mirror();
4919 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4920 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4921 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4922 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4923 if (fd->name() == vmSymbols::address_size_name()) {
4924 mirror->int_field_put(fd->offset(), _address_size);
4925 } else if (fd->name() == vmSymbols::page_size_name()) {
4926 mirror->int_field_put(fd->offset(), _page_size);
4927 } else if (fd->name() == vmSymbols::big_endian_name()) {
4928 mirror->bool_field_put(fd->offset(), _big_endian);
4929 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4930 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4931 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4932 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4933 } else {
4934 assert(false, "unexpected UnsafeConstants field");
4935 }
4936 }
4937 };
4938
4939 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4940 UnsafeConstantsFixup fixup;
4941 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4942 }
4943
4944
4945 // java_lang_StackTraceElement
4946
4947 int java_lang_StackTraceElement::_methodName_offset;
4948 int java_lang_StackTraceElement::_fileName_offset;
4949 int java_lang_StackTraceElement::_lineNumber_offset;
4950 int java_lang_StackTraceElement::_moduleName_offset;
4951 int java_lang_StackTraceElement::_moduleVersion_offset;
4952 int java_lang_StackTraceElement::_classLoaderName_offset;
4953 int java_lang_StackTraceElement::_declaringClass_offset;
4954 int java_lang_StackTraceElement::_declaringClassObject_offset;
4955
4956 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4957 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4958 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4959 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4960 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4961 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4962 macro(_methodName_offset, k, "methodName", string_signature, false); \
4963 macro(_fileName_offset, k, "fileName", string_signature, false); \
4964 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4965
4966 // Support for java_lang_StackTraceElement
4967 void java_lang_StackTraceElement::compute_offsets() {
4968 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4969 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4970 }
4971
4972 #if INCLUDE_CDS
4973 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4974 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4975 }
4976 #endif
4977
4978 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4979 element->obj_field_put(_fileName_offset, value);
4980 }
4981
4982 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4983 element->obj_field_put(_declaringClass_offset, value);
4984 }
4985
4986 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4987 element->obj_field_put(_methodName_offset, value);
4988 }
4989
4990 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4991 element->int_field_put(_lineNumber_offset, value);
4992 }
4993
4994 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4995 element->obj_field_put(_moduleName_offset, value);
4996 }
4997
4998 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4999 element->obj_field_put(_moduleVersion_offset, value);
5000 }
5001
5002 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
5003 element->obj_field_put(_classLoaderName_offset, value);
5004 }
5005
5006 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
5007 element->obj_field_put(_declaringClassObject_offset, value);
5008 }
5009
5010
5011 // java_lang_AssertionStatusDirectives
5012
5013 int java_lang_AssertionStatusDirectives::_classes_offset;
5014 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
5015 int java_lang_AssertionStatusDirectives::_packages_offset;
5016 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
5017 int java_lang_AssertionStatusDirectives::_deflt_offset;
5018
5019 // Support for java Assertions - java_lang_AssertionStatusDirectives.
5020 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
5021 macro(_classes_offset, k, "classes", string_array_signature, false); \
5022 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
5023 macro(_packages_offset, k, "packages", string_array_signature, false); \
5024 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
5025 macro(_deflt_offset, k, "deflt", bool_signature, false)
5026
5027 void java_lang_AssertionStatusDirectives::compute_offsets() {
5028 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
5029 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5030 }
5031
5032 #if INCLUDE_CDS
5033 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
5034 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5035 }
5036 #endif
5037
5038 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
5039 o->obj_field_put(_classes_offset, val);
5040 }
5041
5042 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
5043 o->obj_field_put(_classEnabled_offset, val);
5044 }
5045
5046 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
5047 o->obj_field_put(_packages_offset, val);
5048 }
5049
5050 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
5051 o->obj_field_put(_packageEnabled_offset, val);
5052 }
5053
5054 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
5055 o->bool_field_put(_deflt_offset, val);
5056 }
5057
5058 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
5059
5060 #define AOS_FIELDS_DO(macro) \
5061 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
5062
5063 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
5064 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
5065 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5066 }
5067
5068 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
5069 assert(_owner_offset != 0, "Must be initialized");
5070 return obj->obj_field(_owner_offset);
5071 }
5072
5073 #if INCLUDE_CDS
5074 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
5075 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5076 }
5077 #endif
5078
5079 int vector_VectorPayload::_payload_offset;
5080
5081 #define VECTORPAYLOAD_FIELDS_DO(macro) \
5082 macro(_payload_offset, k, "payload", object_signature, false)
5083
5084 void vector_VectorPayload::compute_offsets() {
5085 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
5086 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5087 }
5088
5089 #if INCLUDE_CDS
5090 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
5091 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5092 }
5093 #endif
5094
5095 void vector_VectorPayload::set_payload(oop o, oop val) {
5096 o->obj_field_put(_payload_offset, val);
5097 }
5098
5099 bool vector_VectorPayload::is_instance(oop obj) {
5100 return obj != NULL && is_subclass(obj->klass());
5101 }
5102
5103 int java_lang_Integer_IntegerCache::_static_cache_offset;
5104 int java_lang_Long_LongCache::_static_cache_offset;
5105 int java_lang_Character_CharacterCache::_static_cache_offset;
5106 int java_lang_Short_ShortCache::_static_cache_offset;
5107 int java_lang_Byte_ByteCache::_static_cache_offset;
5108
5109 #define INTEGER_CACHE_FIELDS_DO(macro) \
5110 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5111
5112 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5113 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5114 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5115 }
5116
5117 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5118 oop base = ik->static_field_base_raw();
5119 return objArrayOop(base->obj_field(_static_cache_offset));
5120 }
5121
5122 Symbol* java_lang_Integer_IntegerCache::symbol() {
5123 return vmSymbols::java_lang_Integer_IntegerCache();
5124 }
5125
5126 #if INCLUDE_CDS
5127 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5128 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5129 }
5130 #endif
5131 #undef INTEGER_CACHE_FIELDS_DO
5132
5133 jint java_lang_Integer::value(oop obj) {
5134 jvalue v;
5135 java_lang_boxing_object::get_value(obj, &v);
5136 return v.i;
5137 }
5138
5139 #define LONG_CACHE_FIELDS_DO(macro) \
5140 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5141
5142 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5143 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5144 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5145 }
5146
5147 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5148 oop base = ik->static_field_base_raw();
5149 return objArrayOop(base->obj_field(_static_cache_offset));
5150 }
5151
5152 Symbol* java_lang_Long_LongCache::symbol() {
5153 return vmSymbols::java_lang_Long_LongCache();
5154 }
5155
5156 #if INCLUDE_CDS
5157 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5158 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5159 }
5160 #endif
5161 #undef LONG_CACHE_FIELDS_DO
5162
5163 jlong java_lang_Long::value(oop obj) {
5164 jvalue v;
5165 java_lang_boxing_object::get_value(obj, &v);
5166 return v.j;
5167 }
5168
5169 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5170 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5171
5172 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5173 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5174 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5175 }
5176
5177 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5178 oop base = ik->static_field_base_raw();
5179 return objArrayOop(base->obj_field(_static_cache_offset));
5180 }
5181
5182 Symbol* java_lang_Character_CharacterCache::symbol() {
5183 return vmSymbols::java_lang_Character_CharacterCache();
5184 }
5185
5186 #if INCLUDE_CDS
5187 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5188 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5189 }
5190 #endif
5191 #undef CHARACTER_CACHE_FIELDS_DO
5192
5193 jchar java_lang_Character::value(oop obj) {
5194 jvalue v;
5195 java_lang_boxing_object::get_value(obj, &v);
5196 return v.c;
5197 }
5198
5199 #define SHORT_CACHE_FIELDS_DO(macro) \
5200 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5201
5202 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5203 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5204 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5205 }
5206
5207 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5208 oop base = ik->static_field_base_raw();
5209 return objArrayOop(base->obj_field(_static_cache_offset));
5210 }
5211
5212 Symbol* java_lang_Short_ShortCache::symbol() {
5213 return vmSymbols::java_lang_Short_ShortCache();
5214 }
5215
5216 #if INCLUDE_CDS
5217 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5218 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5219 }
5220 #endif
5221 #undef SHORT_CACHE_FIELDS_DO
5222
5223 jshort java_lang_Short::value(oop obj) {
5224 jvalue v;
5225 java_lang_boxing_object::get_value(obj, &v);
5226 return v.s;
5227 }
5228
5229 #define BYTE_CACHE_FIELDS_DO(macro) \
5230 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5231
5232 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5233 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5234 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5235 }
5236
5237 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5238 oop base = ik->static_field_base_raw();
5239 return objArrayOop(base->obj_field(_static_cache_offset));
5240 }
5241
5242 Symbol* java_lang_Byte_ByteCache::symbol() {
5243 return vmSymbols::java_lang_Byte_ByteCache();
5244 }
5245
5246 #if INCLUDE_CDS
5247 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5248 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5249 }
5250 #endif
5251 #undef BYTE_CACHE_FIELDS_DO
5252
5253 jbyte java_lang_Byte::value(oop obj) {
5254 jvalue v;
5255 java_lang_boxing_object::get_value(obj, &v);
5256 return v.b;
5257 }
5258
5259 int java_lang_Boolean::_static_TRUE_offset;
5260 int java_lang_Boolean::_static_FALSE_offset;
5261
5262 #define BOOLEAN_FIELDS_DO(macro) \
5263 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5264 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5265
5266
5267 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
5268 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
5269 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5270 }
5271
5272 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
5273 oop base = ik->static_field_base_raw();
5274 return base->obj_field(_static_TRUE_offset);
5275 }
5276
5277 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
5278 oop base = ik->static_field_base_raw();
5279 return base->obj_field(_static_FALSE_offset);
5280 }
5281
5282 Symbol* java_lang_Boolean::symbol() {
5283 return vmSymbols::java_lang_Boolean();
5284 }
5285
5286 #if INCLUDE_CDS
5287 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
5288 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5289 }
5290 #endif
5291 #undef BOOLEAN_CACHE_FIELDS_DO
5292
5293 jboolean java_lang_Boolean::value(oop obj) {
5294 jvalue v;
5295 java_lang_boxing_object::get_value(obj, &v);
5296 return v.z;
5297 }
5298
5299 // java_lang_reflect_RecordComponent
5300
5301 int java_lang_reflect_RecordComponent::_clazz_offset;
5302 int java_lang_reflect_RecordComponent::_name_offset;
5303 int java_lang_reflect_RecordComponent::_type_offset;
5304 int java_lang_reflect_RecordComponent::_accessor_offset;
5305 int java_lang_reflect_RecordComponent::_signature_offset;
5306 int java_lang_reflect_RecordComponent::_annotations_offset;
5307 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
5308
5309 #define RECORDCOMPONENT_FIELDS_DO(macro) \
5310 macro(_clazz_offset, k, "clazz", class_signature, false); \
5311 macro(_name_offset, k, "name", string_signature, false); \
5312 macro(_type_offset, k, "type", class_signature, false); \
5313 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
5314 macro(_signature_offset, k, "signature", string_signature, false); \
5315 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
5316 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
5317
5318 // Support for java_lang_reflect_RecordComponent
5319 void java_lang_reflect_RecordComponent::compute_offsets() {
5320 InstanceKlass* k = vmClasses::RecordComponent_klass();
5321 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5322 }
5323
5324 #if INCLUDE_CDS
5325 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
5326 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5327 }
5328 #endif
5329
5330 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
5331 element->obj_field_put(_clazz_offset, value);
5332 }
5333
5334 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
5335 element->obj_field_put(_name_offset, value);
5336 }
5337
5338 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
5339 element->obj_field_put(_type_offset, value);
5340 }
5341
5342 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
5343 element->obj_field_put(_accessor_offset, value);
5344 }
5345
5346 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
5347 element->obj_field_put(_signature_offset, value);
5348 }
5349
5350 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5351 element->obj_field_put(_annotations_offset, value);
5352 }
5353
5354 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5355 element->obj_field_put(_typeAnnotations_offset, value);
5356 }
5357
5358 // java_lang_InternalError
5359 int java_lang_InternalError::_during_unsafe_access_offset;
5360
5361 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5362 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5363 }
5364
5365 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5366 return internal_error->bool_field(_during_unsafe_access_offset);
5367 }
5368
5369 void java_lang_InternalError::compute_offsets() {
5370 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5371 }
5372
5373 #if INCLUDE_CDS
5374 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5375 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5376 }
5377 #endif
5378
5379 #define BASIC_JAVA_CLASSES_DO_PART1(f) \
5380 f(java_lang_Class) \
5381 f(java_lang_String) \
5382 f(java_lang_ref_Reference) \
5383 //end
5384
5385 #define BASIC_JAVA_CLASSES_DO_PART2(f) \
5386 f(java_lang_System) \
5387 f(java_lang_ClassLoader) \
5388 f(java_lang_Throwable) \
5389 f(java_lang_Thread) \
5390 f(java_lang_Thread_FieldHolder) \
5391 f(java_lang_Thread_Constants) \
5392 f(java_lang_ThreadGroup) \
5393 f(java_lang_VirtualThread) \
5394 f(java_lang_InternalError) \
5395 f(java_lang_AssertionStatusDirectives) \
5396 f(java_lang_ref_SoftReference) \
5397 f(java_lang_invoke_MethodHandle) \
5398 f(java_lang_invoke_DirectMethodHandle) \
5399 f(java_lang_invoke_MemberName) \
5400 f(java_lang_invoke_ResolvedMethodName) \
5401 f(java_lang_invoke_LambdaForm) \
5402 f(java_lang_invoke_MethodType) \
5403 f(java_lang_invoke_CallSite) \
5404 f(java_lang_invoke_ConstantCallSite) \
5405 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
5406 f(java_security_AccessControlContext) \
5407 f(java_lang_reflect_AccessibleObject) \
5408 f(java_lang_reflect_Method) \
5409 f(java_lang_reflect_Constructor) \
5410 f(java_lang_reflect_Field) \
5411 f(java_lang_reflect_RecordComponent) \
5412 f(reflect_ConstantPool) \
5413 f(reflect_UnsafeStaticFieldAccessorImpl) \
5414 f(java_lang_reflect_Parameter) \
5415 f(java_lang_Module) \
5416 f(java_lang_StackTraceElement) \
5417 f(java_lang_StackFrameInfo) \
5418 f(java_lang_LiveStackFrameInfo) \
5419 f(jdk_internal_vm_ContinuationScope) \
5420 f(jdk_internal_vm_Continuation) \
5421 f(jdk_internal_vm_StackChunk) \
5422 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
5423 f(jdk_internal_foreign_abi_NativeEntryPoint) \
5424 f(jdk_internal_foreign_abi_ABIDescriptor) \
5425 f(jdk_internal_foreign_abi_VMStorage) \
5426 f(jdk_internal_foreign_abi_CallConv) \
5427 f(jdk_internal_misc_UnsafeConstants) \
5428 f(java_lang_boxing_object) \
5429 f(vector_VectorPayload) \
5430 //end
5431
5432 #define BASIC_JAVA_CLASSES_DO(f) \
5433 BASIC_JAVA_CLASSES_DO_PART1(f) \
5434 BASIC_JAVA_CLASSES_DO_PART2(f)
5435
5436 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5437
5438 // Compute field offsets of all the classes in this file
5439 void JavaClasses::compute_offsets() {
5440 if (UseSharedSpaces) {
5441 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5442 JvmtiExport::has_early_class_hook_env()),
5443 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5444 // None of the classes used by the rest of this function can be replaced by
5445 // JVMTI ClassFileLoadHook.
5446 // We are safe to use the archived offsets, which have already been restored
5447 // by JavaClasses::serialize_offsets, without computing the offsets again.
5448 return;
5449 }
5450
5451 // We have already called the compute_offsets() of the
5452 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5453 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5454 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5455 }
5456
5457 #if INCLUDE_CDS
5458 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5459
5460 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5461 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5462 }
5463 #endif
5464
5465 #if INCLUDE_CDS_JAVA_HEAP
5466 bool JavaClasses::is_supported_for_archiving(oop obj) {
5467 Klass* klass = obj->klass();
5468
5469 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5470 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5471 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5472 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5473 // So for now we cannot not support these classes for archiving.
5474 //
5475 // These objects typically are not referenced by static fields, but rather by resolved
5476 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5477 klass == vmClasses::ResolvedMethodName_klass() ||
5478 klass == vmClasses::MemberName_klass() ||
5479 klass == vmClasses::Context_klass() ||
5480 // It's problematic to archive Reference objects. One of the reasons is that
5481 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5482 klass->is_subclass_of(vmClasses::Reference_klass())) {
5483 return false;
5484 }
5485
5486 return true;
5487 }
5488 #endif
5489
5490 #ifndef PRODUCT
5491
5492 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5493
5494 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5495 const char* field_sig) {
5496 EXCEPTION_MARK;
5497 fieldDescriptor fd;
5498 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5499 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5500 InstanceKlass* ik = InstanceKlass::cast(k);
5501 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5502 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5503 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5504 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5505 return false;
5506 }
5507 if (fd.is_static()) {
5508 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5509 return false;
5510 }
5511 if (fd.offset() == deserialized_offset ) {
5512 return true;
5513 } else {
5514 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5515 klass_name, field_name, deserialized_offset, fd.offset());
5516 return false;
5517 }
5518 }
5519
5520 void JavaClasses::check_offsets() {
5521 bool valid = true;
5522
5523 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5524 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5525
5526 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5527 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5528
5529 // Boxed primitive objects (java_lang_boxing_object)
5530
5531 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5532 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5533 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5534 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5535 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5536 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5537 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5538 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5539
5540 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5541 }
5542
5543 #endif // PRODUCT
5544
5545 int InjectedField::compute_offset() {
5546 InstanceKlass* ik = InstanceKlass::cast(klass());
5547 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5548 if (!may_be_java && !fs.access_flags().is_internal()) {
5549 // Only look at injected fields
5550 continue;
5551 }
5552 if (fs.name() == name() && fs.signature() == signature()) {
5553 return fs.offset();
5554 }
5555 }
5556 ResourceMark rm;
5557 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)" : "");
5558 #ifndef PRODUCT
5559 ik->print();
5560 tty->print_cr("all fields:");
5561 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5562 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5563 }
5564 #endif //PRODUCT
5565 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5566 return -1;
5567 }
5568
5569 void javaClasses_init() {
5570 JavaClasses::compute_offsets();
5571 JavaClasses::check_offsets();
5572 java_lang_VirtualThread::init_static_notify_jvmti_events();
5573 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5574 }