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 "jvm.h"
27 #include "cds/archiveBuilder.hpp"
28 #include "cds/heapShared.inline.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/javaThreadStatus.hpp"
34 #include "classfile/moduleEntry.hpp"
35 #include "classfile/stringTable.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmClasses.hpp"
39 #include "classfile/vmSymbols.hpp"
40 #include "code/debugInfo.hpp"
41 #include "code/dependencyContext.hpp"
42 #include "code/pcDesc.hpp"
43 #include "gc/shared/collectedHeap.inline.hpp"
44 #include "interpreter/interpreter.hpp"
45 #include "interpreter/linkResolver.hpp"
46 #include "logging/log.hpp"
47 #include "logging/logStream.hpp"
48 #include "memory/oopFactory.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "memory/universe.hpp"
51 #include "oops/fieldStreams.inline.hpp"
52 #include "oops/flatArrayKlass.hpp"
53 #include "oops/inlineKlass.inline.hpp"
54 #include "oops/instanceKlass.inline.hpp"
55 #include "oops/instanceMirrorKlass.inline.hpp"
56 #include "oops/klass.hpp"
57 #include "oops/klass.inline.hpp"
58 #include "oops/method.inline.hpp"
59 #include "oops/objArrayOop.inline.hpp"
60 #include "oops/oop.inline.hpp"
61 #include "oops/symbol.hpp"
62 #include "oops/recordComponent.hpp"
63 #include "oops/typeArrayOop.inline.hpp"
64 #include "prims/jvmtiExport.hpp"
65 #include "prims/methodHandles.hpp"
66 #include "prims/resolvedMethodTable.hpp"
67 #include "runtime/fieldDescriptor.inline.hpp"
68 #include "runtime/frame.inline.hpp"
69 #include "runtime/handles.inline.hpp"
70 #include "runtime/init.hpp"
71 #include "runtime/interfaceSupport.inline.hpp"
72 #include "runtime/java.hpp"
73 #include "runtime/javaCalls.hpp"
74 #include "runtime/jniHandles.inline.hpp"
75 #include "runtime/reflectionUtils.hpp"
76 #include "runtime/safepoint.hpp"
77 #include "runtime/safepointVerifiers.hpp"
78 #include "runtime/thread.inline.hpp"
79 #include "runtime/vframe.inline.hpp"
80 #include "runtime/vm_version.hpp"
81 #include "utilities/align.hpp"
82 #include "utilities/preserveException.hpp"
83 #include "utilities/utf8.hpp"
84 #if INCLUDE_JVMCI
85 #include "jvmci/jvmciJavaClasses.hpp"
86 #endif
87
88 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
89 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
90
91 #if INCLUDE_CDS
92 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
93 f->do_u4((u4*)&_##name##_offset);
94 #endif
95
96 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
97 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
98
99 InjectedField JavaClasses::_injected_fields[] = {
100 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
101 };
102
103 // Register native methods of Object
104 void java_lang_Object::register_natives(TRAPS) {
105 InstanceKlass* obj = vmClasses::Object_klass();
106 Method::register_native(obj, vmSymbols::hashCode_name(),
107 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
108 Method::register_native(obj, vmSymbols::wait_name(),
109 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
110 Method::register_native(obj, vmSymbols::notify_name(),
111 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
112 Method::register_native(obj, vmSymbols::notifyAll_name(),
113 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
114 Method::register_native(obj, vmSymbols::clone_name(),
115 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
116 }
117
118 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
119 return _injected_fields[id].compute_offset();
120 }
121
122 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
123 *field_count = 0;
124
125 vmSymbolID sid = vmSymbols::find_sid(class_name);
126 if (sid == vmSymbolID::NO_SID) {
127 // Only well known classes can inject fields
128 return NULL;
129 }
130
131 int count = 0;
132 int start = -1;
133
134 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
135 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
136 count++; \
137 if (start == -1) start = klass##_##name##_enum; \
138 }
139 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
140 #undef LOOKUP_INJECTED_FIELD
141
142 if (start != -1) {
143 *field_count = count;
144 return _injected_fields + start;
145 }
146 return NULL;
147 }
148
149
150 // Helpful routine for computing field offsets at run time rather than hardcoding them
151 // Finds local fields only, including static fields. Static field offsets are from the
152 // beginning of the mirror.
153 static void compute_offset(int &dest_offset,
154 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
155 bool is_static = false) {
156 fieldDescriptor fd;
157 if (ik == NULL) {
158 ResourceMark rm;
159 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
160 vm_exit_during_initialization("Invalid layout of well-known class");
161 }
162
163 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
164 ResourceMark rm;
165 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
166 name_symbol->as_C_string(), signature_symbol->as_C_string());
167 #ifndef PRODUCT
168 // Prints all fields and offsets
169 Log(class) lt;
170 LogStream ls(lt.error());
171 ik->print_on(&ls);
172 #endif //PRODUCT
173 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
174 }
175 dest_offset = fd.offset();
176 }
177
178 // Overloading to pass name as a string.
179 static void compute_offset(int& dest_offset, InstanceKlass* ik,
180 const char* name_string, Symbol* signature_symbol,
181 bool is_static = false) {
182 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
183 if (name == NULL) {
184 ResourceMark rm;
185 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
186 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
187 }
188 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
189 }
190
191
192 #if INCLUDE_CDS
193 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
194 f->do_u4((u4*)&offset)
195 #endif
196
197 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
198 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
199
200
201 // java_lang_String
202
203 int java_lang_String::_value_offset;
204 int java_lang_String::_hash_offset;
205 int java_lang_String::_hashIsZero_offset;
206 int java_lang_String::_coder_offset;
207 int java_lang_String::_flags_offset;
208
209 bool java_lang_String::_initialized;
210
211
212 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
213 uint8_t* addr = flags_addr(java_string);
214 uint8_t value = Atomic::load(addr);
215 while ((value & flag_mask) == 0) {
216 uint8_t old_value = value;
217 value |= flag_mask;
218 value = Atomic::cmpxchg(addr, old_value, value);
219 if (value == old_value) return false; // Flag bit changed from 0 to 1.
220 }
221 return true; // Flag bit is already 1.
222 }
223
224 #define STRING_FIELDS_DO(macro) \
225 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
226 macro(_hash_offset, k, "hash", int_signature, false); \
227 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
228 macro(_coder_offset, k, "coder", byte_signature, false);
229
230 void java_lang_String::compute_offsets() {
231 if (_initialized) {
232 return;
233 }
234
235 InstanceKlass* k = vmClasses::String_klass();
236 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
237 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
238
239 _initialized = true;
240 }
241
242 #if INCLUDE_CDS
243 void java_lang_String::serialize_offsets(SerializeClosure* f) {
244 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
245 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
246 f->do_bool(&_initialized);
247 }
248 #endif
249
250 class CompactStringsFixup : public FieldClosure {
251 private:
252 bool _value;
253
254 public:
255 CompactStringsFixup(bool value) : _value(value) {}
256
257 void do_field(fieldDescriptor* fd) {
258 if (fd->name() == vmSymbols::compact_strings_name()) {
259 oop mirror = fd->field_holder()->java_mirror();
260 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
261 assert(mirror != NULL, "String must have mirror already");
262 mirror->bool_field_put(fd->offset(), _value);
263 }
264 }
265 };
266
267 void java_lang_String::set_compact_strings(bool value) {
268 CompactStringsFixup fix(value);
269 vmClasses::String_klass()->do_local_static_fields(&fix);
270 }
271
272 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
273 assert(_initialized, "Must be initialized");
274 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
275
276 // Create the String object first, so there's a chance that the String
277 // and the char array it points to end up in the same cache line.
278 oop obj;
279 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
280
281 // Create the char array. The String object must be handlized here
282 // because GC can happen as a result of the allocation attempt.
283 Handle h_obj(THREAD, obj);
284 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
285 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
286
287 // Point the String at the char array
288 obj = h_obj();
289 set_value(obj, buffer);
290 // No need to zero the offset, allocation zero'ed the entire String object
291 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
292 return h_obj;
293 }
294
295 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
296 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
297 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
298 typeArrayOop buffer = value(h_obj());
299 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
300 if (is_latin1) {
301 for (int index = 0; index < length; index++) {
302 buffer->byte_at_put(index, (jbyte)unicode[index]);
303 }
304 } else {
305 for (int index = 0; index < length; index++) {
306 buffer->char_at_put(index, unicode[index]);
307 }
308 }
309
310 #ifdef ASSERT
311 {
312 ResourceMark rm;
313 char* expected = UNICODE::as_utf8(unicode, length);
314 char* actual = as_utf8_string(h_obj());
315 if (strcmp(expected, actual) != 0) {
316 fatal("Unicode conversion failure: %s --> %s", expected, actual);
317 }
318 }
319 #endif
320
321 return h_obj;
322 }
323
324 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
325 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
326 return h_obj();
327 }
328
329 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
330 if (utf8_str == NULL) {
331 return Handle();
332 }
333 bool has_multibyte, is_latin1;
334 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
335 if (!CompactStrings) {
336 has_multibyte = true;
337 is_latin1 = false;
338 }
339
340 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
341 if (length > 0) {
342 if (!has_multibyte) {
343 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
344 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
345 } else if (is_latin1) {
346 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
347 } else {
348 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
349 }
350 }
351
352 #ifdef ASSERT
353 // This check is too strict when the input string is not a valid UTF8.
354 // For example, it may be created with arbitrary content via jni_NewStringUTF.
355 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
356 ResourceMark rm;
357 const char* expected = utf8_str;
358 char* actual = as_utf8_string(h_obj());
359 if (strcmp(expected, actual) != 0) {
360 fatal("String conversion failure: %s --> %s", expected, actual);
361 }
362 }
363 #endif
364
365 return h_obj;
366 }
367
368 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
369 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
370 return h_obj();
371 }
372
373 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
374 const char* utf8_str = (char*)symbol->bytes();
375 int utf8_len = symbol->utf8_length();
376
377 bool has_multibyte, is_latin1;
378 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
379 if (!CompactStrings) {
380 has_multibyte = true;
381 is_latin1 = false;
382 }
383
384 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
385 if (length > 0) {
386 if (!has_multibyte) {
387 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
388 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
389 } else if (is_latin1) {
390 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
391 } else {
392 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
393 }
394 }
395
396 #ifdef ASSERT
397 {
398 ResourceMark rm;
399 const char* expected = symbol->as_utf8();
400 char* actual = as_utf8_string(h_obj());
401 if (strncmp(expected, actual, utf8_len) != 0) {
402 fatal("Symbol conversion failure: %s --> %s", expected, actual);
403 }
404 }
405 #endif
406
407 return h_obj;
408 }
409
410 // Converts a C string to a Java String based on current encoding
411 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
412 assert(str != NULL, "bad arguments");
413
414 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
415 static to_java_string_fn_t _to_java_string_fn = NULL;
416
417 if (_to_java_string_fn == NULL) {
418 void *lib_handle = os::native_java_library();
419 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
420 #if defined(_WIN32) && !defined(_WIN64)
421 if (_to_java_string_fn == NULL) {
422 // On 32 bit Windows, also try __stdcall decorated name
423 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
424 }
425 #endif
426 if (_to_java_string_fn == NULL) {
427 fatal("JNU_NewStringPlatform missing");
428 }
429 }
430
431 jstring js = NULL;
432 {
433 JavaThread* thread = THREAD;
434 HandleMark hm(thread);
435 ThreadToNativeFromVM ttn(thread);
436 js = (_to_java_string_fn)(thread->jni_environment(), str);
437 }
438
439 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
440 JNIHandles::destroy_local(js); // destroy local JNIHandle.
441 return native_platform_string;
442 }
443
444 // Converts a Java String to a native C string that can be used for
445 // native OS calls.
446 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
447 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
448 static to_platform_string_fn_t _to_platform_string_fn = NULL;
449
450 if (_to_platform_string_fn == NULL) {
451 void *lib_handle = os::native_java_library();
452 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
453 if (_to_platform_string_fn == NULL) {
454 fatal("GetStringPlatformChars missing");
455 }
456 }
457
458 char *native_platform_string;
459 { JavaThread* thread = THREAD;
460 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
461 bool is_copy;
462 HandleMark hm(thread);
463 ThreadToNativeFromVM ttn(thread);
464 JNIEnv *env = thread->jni_environment();
465 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
466 assert(is_copy == JNI_TRUE, "is_copy value changed");
467 JNIHandles::destroy_local(js);
468 }
469 return native_platform_string;
470 }
471
472 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) {
473 ResourceMark rm(THREAD);
474 return create_from_str(java_name->as_klass_external_name(), THREAD);
475 }
476
477 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
478 jchar* result = as_unicode_string_or_null(java_string, length);
479 if (result == NULL) {
480 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
481 }
482 return result;
483 }
484
485 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) {
486 typeArrayOop value = java_lang_String::value(java_string);
487 length = java_lang_String::length(java_string, value);
488 bool is_latin1 = java_lang_String::is_latin1(java_string);
489
490 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
491 if (result != NULL) {
492 if (!is_latin1) {
493 for (int index = 0; index < length; index++) {
494 result[index] = value->char_at(index);
495 }
496 } else {
497 for (int index = 0; index < length; index++) {
498 result[index] = ((jchar) value->byte_at(index)) & 0xff;
499 }
500 }
501 }
502 return result;
503 }
504
505 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) {
506 // The hash and hashIsZero fields are subject to a benign data race,
507 // making it crucial to ensure that any observable result of the
508 // calculation in this method stays correct under any possible read of
509 // these fields. Necessary restrictions to allow this to be correct
510 // without explicit memory fences or similar concurrency primitives is
511 // that we can ever only write to one of these two fields for a given
512 // String instance, and that the computation is idempotent and derived
513 // from immutable state
514 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
515 if (java_lang_String::hash_is_set(java_string)) {
516 return java_string->int_field(_hash_offset);
517 }
518
519 typeArrayOop value = java_lang_String::value(java_string);
520 int length = java_lang_String::length(java_string, value);
521 bool is_latin1 = java_lang_String::is_latin1(java_string);
522
523 unsigned int hash = 0;
524 if (length > 0) {
525 if (is_latin1) {
526 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
527 } else {
528 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
529 }
530 }
531
532 if (update) {
533 if (hash != 0) {
534 java_string->int_field_put(_hash_offset, hash);
535 } else {
536 java_string->bool_field_put(_hashIsZero_offset, true);
537 }
538 }
539 return hash;
540 }
541
542 unsigned int java_lang_String::hash_code(oop java_string) {
543 return hash_code_impl(java_string, /*update=*/true);
544 }
545
546 unsigned int java_lang_String::hash_code_noupdate(oop java_string) {
547 return hash_code_impl(java_string, /*update=*/false);
548 }
549
550
551 char* java_lang_String::as_quoted_ascii(oop java_string) {
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 if (length == 0) return NULL;
557
558 char* result;
559 int result_length;
560 if (!is_latin1) {
561 jchar* base = value->char_at_addr(0);
562 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
563 result = NEW_RESOURCE_ARRAY(char, result_length);
564 UNICODE::as_quoted_ascii(base, length, result, result_length);
565 } else {
566 jbyte* base = value->byte_at_addr(0);
567 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
568 result = NEW_RESOURCE_ARRAY(char, result_length);
569 UNICODE::as_quoted_ascii(base, length, result, result_length);
570 }
571 assert(result_length >= length + 1, "must not be shorter");
572 assert(result_length == (int)strlen(result) + 1, "must match");
573 return result;
574 }
575
576 Symbol* java_lang_String::as_symbol(oop java_string) {
577 typeArrayOop value = java_lang_String::value(java_string);
578 int length = java_lang_String::length(java_string, value);
579 bool is_latin1 = java_lang_String::is_latin1(java_string);
580 if (!is_latin1) {
581 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
582 Symbol* sym = SymbolTable::new_symbol(base, length);
583 return sym;
584 } else {
585 ResourceMark rm;
586 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
587 const char* base = UNICODE::as_utf8(position, length);
588 Symbol* sym = SymbolTable::new_symbol(base, length);
589 return sym;
590 }
591 }
592
593 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
594 typeArrayOop value = java_lang_String::value(java_string);
595 int length = java_lang_String::length(java_string, value);
596 bool is_latin1 = java_lang_String::is_latin1(java_string);
597 if (!is_latin1) {
598 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
599 return SymbolTable::probe_unicode(base, length);
600 } else {
601 ResourceMark rm;
602 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
603 const char* base = UNICODE::as_utf8(position, length);
604 return SymbolTable::probe(base, length);
605 }
606 }
607
608 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
609 assert(value_equals(value, java_lang_String::value(java_string)),
610 "value must be same as java_lang_String::value(java_string)");
611 int length = java_lang_String::length(java_string, value);
612 if (length == 0) {
613 return 0;
614 }
615 if (!java_lang_String::is_latin1(java_string)) {
616 return UNICODE::utf8_length(value->char_at_addr(0), length);
617 } else {
618 return UNICODE::utf8_length(value->byte_at_addr(0), length);
619 }
620 }
621
622 int java_lang_String::utf8_length(oop java_string) {
623 typeArrayOop value = java_lang_String::value(java_string);
624 return utf8_length(java_string, value);
625 }
626
627 char* java_lang_String::as_utf8_string(oop java_string) {
628 int length;
629 return as_utf8_string(java_string, length);
630 }
631
632 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
633 typeArrayOop value = java_lang_String::value(java_string);
634 length = java_lang_String::length(java_string, value);
635 bool is_latin1 = java_lang_String::is_latin1(java_string);
636 if (!is_latin1) {
637 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
638 return UNICODE::as_utf8(position, length);
639 } else {
640 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
641 return UNICODE::as_utf8(position, length);
642 }
643 }
644
645 // Uses a provided buffer if it's sufficiently large, otherwise allocates
646 // a resource array to fit
647 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
648 typeArrayOop value = java_lang_String::value(java_string);
649 int len = java_lang_String::length(java_string, value);
650 bool is_latin1 = java_lang_String::is_latin1(java_string);
651 if (!is_latin1) {
652 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
653 utf8_len = UNICODE::utf8_length(position, len);
654 if (utf8_len >= buflen) {
655 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
656 }
657 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
658 } else {
659 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
660 utf8_len = UNICODE::utf8_length(position, len);
661 if (utf8_len >= buflen) {
662 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
663 }
664 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
665 }
666 }
667
668 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
669 assert(value_equals(value, java_lang_String::value(java_string)),
670 "value must be same as java_lang_String::value(java_string)");
671 int length = java_lang_String::length(java_string, value);
672 bool is_latin1 = java_lang_String::is_latin1(java_string);
673 if (!is_latin1) {
674 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
675 return UNICODE::as_utf8(position, length, buf, buflen);
676 } else {
677 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
678 return UNICODE::as_utf8(position, length, buf, buflen);
679 }
680 }
681
682 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
683 typeArrayOop value = java_lang_String::value(java_string);
684 return as_utf8_string(java_string, value, buf, buflen);
685 }
686
687 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
688 typeArrayOop value = java_lang_String::value(java_string);
689 bool is_latin1 = java_lang_String::is_latin1(java_string);
690 assert(start + len <= java_lang_String::length(java_string), "just checking");
691 if (!is_latin1) {
692 jchar* position = value->char_at_addr(start);
693 return UNICODE::as_utf8(position, len);
694 } else {
695 jbyte* position = value->byte_at_addr(start);
696 return UNICODE::as_utf8(position, len);
697 }
698 }
699
700 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
701 assert(value_equals(value, java_lang_String::value(java_string)),
702 "value must be same as java_lang_String::value(java_string)");
703 assert(start + len <= java_lang_String::length(java_string), "just checking");
704 bool is_latin1 = java_lang_String::is_latin1(java_string);
705 if (!is_latin1) {
706 jchar* position = value->char_at_addr(start);
707 return UNICODE::as_utf8(position, len, buf, buflen);
708 } else {
709 jbyte* position = value->byte_at_addr(start);
710 return UNICODE::as_utf8(position, len, buf, buflen);
711 }
712 }
713
714 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
715 assert(java_string->klass() == vmClasses::String_klass(),
716 "must be java_string");
717 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
718 int length = java_lang_String::length(java_string, value);
719 if (length != len) {
720 return false;
721 }
722 bool is_latin1 = java_lang_String::is_latin1(java_string);
723 if (!is_latin1) {
724 for (int i = 0; i < len; i++) {
725 if (value->char_at(i) != chars[i]) {
726 return false;
727 }
728 }
729 } else {
730 for (int i = 0; i < len; i++) {
731 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
732 return false;
733 }
734 }
735 }
736 return true;
737 }
738
739 bool java_lang_String::equals(oop str1, oop str2) {
740 assert(str1->klass() == vmClasses::String_klass(),
741 "must be java String");
742 assert(str2->klass() == vmClasses::String_klass(),
743 "must be java String");
744 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
745 bool is_latin1 = java_lang_String::is_latin1(str1);
746 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
747 bool is_latin2 = java_lang_String::is_latin1(str2);
748
749 if (is_latin1 != is_latin2) {
750 // Strings with different coders are never equal.
751 return false;
752 }
753 return value_equals(value1, value2);
754 }
755
756 void java_lang_String::print(oop java_string, outputStream* st) {
757 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string");
758 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
759
760 if (value == NULL) {
761 // This can happen if, e.g., printing a String
762 // object before its initializer has been called
763 st->print("NULL");
764 return;
765 }
766
767 int length = java_lang_String::length(java_string, value);
768 bool is_latin1 = java_lang_String::is_latin1(java_string);
769
770 st->print("\"");
771 for (int index = 0; index < length; index++) {
772 st->print("%c", (!is_latin1) ? value->char_at(index) :
773 ((jchar) value->byte_at(index)) & 0xff );
774 }
775 st->print("\"");
776 }
777
778 // java_lang_Class
779
780 int java_lang_Class::_klass_offset;
781 int java_lang_Class::_array_klass_offset;
782 int java_lang_Class::_oop_size_offset;
783 int java_lang_Class::_static_oop_field_count_offset;
784 int java_lang_Class::_class_loader_offset;
785 int java_lang_Class::_module_offset;
786 int java_lang_Class::_protection_domain_offset;
787 int java_lang_Class::_component_mirror_offset;
788 int java_lang_Class::_primary_mirror_offset;
789 int java_lang_Class::_secondary_mirror_offset;
790 int java_lang_Class::_init_lock_offset;
791 int java_lang_Class::_signers_offset;
792 int java_lang_Class::_name_offset;
793 int java_lang_Class::_source_file_offset;
794 int java_lang_Class::_classData_offset;
795 int java_lang_Class::_classRedefinedCount_offset;
796
797 bool java_lang_Class::_offsets_computed = false;
798 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
799 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
800
801 #ifdef ASSERT
802 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
803 assert(fd->has_initial_value(), "caller should have checked this");
804 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
805 // Can't use vmSymbols::string_signature() as fd->signature() may have been relocated
806 // during DumpSharedSpaces
807 assert(fd->signature()->equals("Ljava/lang/String;"), "just checking");
808 }
809 #endif
810
811 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
812 DEBUG_ONLY(assert_valid_static_string_field(fd);)
813 oop string = fd->string_initial_value(CHECK);
814 mirror()->obj_field_put(fd->offset(), string);
815 }
816
817 #if INCLUDE_CDS_JAVA_HEAP
818 static void initialize_static_string_field_for_dump(fieldDescriptor* fd, Handle mirror) {
819 DEBUG_ONLY(assert_valid_static_string_field(fd);)
820 assert(DumpSharedSpaces, "must be");
821 assert(HeapShared::is_archived_object_during_dumptime(mirror()), "must be");
822 // Archive the String field and update the pointer.
823 oop s = mirror()->obj_field(fd->offset());
824 oop archived_s = StringTable::create_archived_string(s);
825 mirror()->obj_field_put(fd->offset(), archived_s);
826 }
827 #endif
828
829 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
830 assert(fd->has_initial_value(), "caller should have checked this");
831 BasicType t = fd->field_type();
832 switch (t) {
833 case T_BYTE:
834 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
835 break;
836 case T_BOOLEAN:
837 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
838 break;
839 case T_CHAR:
840 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
841 break;
842 case T_SHORT:
843 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
844 break;
845 case T_INT:
846 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
847 break;
848 case T_FLOAT:
849 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
850 break;
851 case T_DOUBLE:
852 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
853 break;
854 case T_LONG:
855 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
856 break;
857 default:
858 // Illegal ConstantValue attribute in class file should have been
859 // caught during classfile parsing.
860 ShouldNotReachHere();
861 }
862 }
863
864 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
865 assert(mirror.not_null() && fd->is_static(), "just checking");
866 if (fd->has_initial_value()) {
867 if (fd->field_type() != T_OBJECT) {
868 initialize_static_primitive_field(fd, mirror);
869 } else {
870 initialize_static_string_field(fd, mirror, CHECK);
871 }
872 }
873 }
874
875 #if INCLUDE_CDS_JAVA_HEAP
876 static void initialize_static_field_for_dump(fieldDescriptor* fd, Handle mirror) {
877 assert(mirror.not_null() && fd->is_static(), "just checking");
878 if (fd->has_initial_value()) {
879 if (fd->field_type() != T_OBJECT) {
880 initialize_static_primitive_field(fd, mirror);
881 } else {
882 initialize_static_string_field_for_dump(fd, mirror);
883 }
884 }
885 }
886 #endif
887
888 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
889 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
890
891 // If the offset was read from the shared archive, it was fixed up already
892 if (!k->is_shared()) {
893 if (k->is_instance_klass()) {
894 // During bootstrap, java.lang.Class wasn't loaded so static field
895 // offsets were computed without the size added it. Go back and
896 // update all the static field offsets to included the size.
897 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
898 if (fs.access_flags().is_static()) {
899 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
900 fs.set_offset(real_offset);
901 }
902 }
903 }
904 }
905
906 if (k->is_shared() && k->has_archived_mirror_index()) {
907 if (HeapShared::are_archived_mirrors_available()) {
908 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
909 assert(present, "Missing archived mirror for %s", k->external_name());
910 return;
911 } else {
912 k->clear_java_mirror_handle();
913 k->clear_archived_mirror_index();
914 }
915 }
916 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
917 }
918
919 void java_lang_Class::initialize_mirror_fields(Klass* k,
920 Handle mirror,
921 Handle protection_domain,
922 Handle classData,
923 TRAPS) {
924 // Allocate a simple java object for a lock.
925 // This needs to be a java object because during class initialization
926 // it can be held across a java call.
927 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
928 set_init_lock(mirror(), r);
929
930 // Set protection domain also
931 set_protection_domain(mirror(), protection_domain());
932
933 // Initialize static fields
934 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
935
936 // Set classData
937 set_class_data(mirror(), classData());
938 }
939
940 // Set the java.lang.Module module field in the java_lang_Class mirror
941 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
942 if (module.is_null()) {
943 // During startup, the module may be NULL only if java.base has not been defined yet.
944 // Put the class on the fixup_module_list to patch later when the java.lang.Module
945 // for java.base is known. But note that since we captured the NULL module another
946 // thread may have completed that initialization.
947
948 bool javabase_was_defined = false;
949 {
950 MutexLocker m1(current, Module_lock);
951 // Keep list of classes needing java.base module fixup
952 if (!ModuleEntryTable::javabase_defined()) {
953 assert(k->java_mirror() != NULL, "Class's mirror is null");
954 k->class_loader_data()->inc_keep_alive();
955 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
956 fixup_module_field_list()->push(k);
957 } else {
958 javabase_was_defined = true;
959 }
960 }
961
962 // If java.base was already defined then patch this particular class with java.base.
963 if (javabase_was_defined) {
964 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
965 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
966 "Setting class module field, " JAVA_BASE_NAME " should be defined");
967 Handle javabase_handle(current, javabase_entry->module());
968 set_module(mirror(), javabase_handle());
969 }
970 } else {
971 assert(Universe::is_module_initialized() ||
972 (ModuleEntryTable::javabase_defined() &&
973 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
974 "Incorrect java.lang.Module specification while creating mirror");
975 set_module(mirror(), module());
976 }
977 }
978
979 // Statically allocate fixup lists because they always get created.
980 void java_lang_Class::allocate_fixup_lists() {
981 GrowableArray<Klass*>* mirror_list =
982 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
983 set_fixup_mirror_list(mirror_list);
984
985 GrowableArray<Klass*>* module_list =
986 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
987 set_fixup_module_field_list(module_list);
988 }
989
990 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
991 Handle module, Handle protection_domain,
992 Handle classData, TRAPS) {
993 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
994 assert(k->java_mirror() == NULL, "should only assign mirror once");
995
996 // Use this moment of initialization to cache modifier_flags also,
997 // to support Class.getModifiers(). Instance classes recalculate
998 // the cached flags after the class file is parsed, but before the
999 // class is put into the system dictionary.
1000 int computed_modifiers = k->compute_modifier_flags();
1001 k->set_modifier_flags(computed_modifiers);
1002 // Class_klass has to be loaded because it is used to allocate
1003 // the mirror.
1004 if (vmClasses::Class_klass_loaded()) {
1005 // Allocate mirror (java.lang.Class instance)
1006 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1007 Handle mirror(THREAD, mirror_oop);
1008 Handle comp_mirror;
1009
1010 // Setup indirection from mirror->klass
1011 set_klass(mirror(), k);
1012
1013 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1014 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1015
1016 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1017
1018 // It might also have a component mirror. This mirror must already exist.
1019 if (k->is_array_klass()) {
1020 if (k->is_flatArray_klass()) {
1021 Klass* element_klass = (Klass*) FlatArrayKlass::cast(k)->element_klass();
1022 assert(element_klass->is_inline_klass(), "Must be inline type component");
1023 InlineKlass* vk = InlineKlass::cast(element_klass);
1024 comp_mirror = Handle(THREAD, vk->val_mirror());
1025 } else if (k->is_typeArray_klass()) {
1026 BasicType type = TypeArrayKlass::cast(k)->element_type();
1027 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1028 } else {
1029 assert(k->is_objArray_klass(), "Must be");
1030 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1031 assert(element_klass != NULL, "Must have an element klass");
1032 oop comp_oop = element_klass->java_mirror();
1033 if (element_klass->is_inline_klass()) {
1034 InlineKlass* ik = InlineKlass::cast(element_klass);
1035 comp_oop = k->name()->is_Q_array_signature() ? ik->val_mirror() : ik->ref_mirror();
1036 }
1037 comp_mirror = Handle(THREAD, comp_oop);
1038 }
1039 assert(comp_mirror() != NULL, "must have a mirror");
1040
1041 // Two-way link between the array klass and its component mirror:
1042 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1043 set_component_mirror(mirror(), comp_mirror());
1044 // See below for ordering dependencies between field array_klass in component mirror
1045 // and java_mirror in this klass.
1046 } else {
1047 assert(k->is_instance_klass(), "Must be");
1048
1049 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1050 if (HAS_PENDING_EXCEPTION) {
1051 // If any of the fields throws an exception like OOM remove the klass field
1052 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1053 // This mirror looks like a primitive type, which logically it is because it
1054 // it represents no class.
1055 set_klass(mirror(), NULL);
1056 return;
1057 }
1058 }
1059
1060 // set the classLoader field in the java_lang_Class instance
1061 assert(class_loader() == k->class_loader(), "should be same");
1062 set_class_loader(mirror(), class_loader());
1063
1064 // Setup indirection from klass->mirror
1065 // after any exceptions can happen during allocations.
1066 k->set_java_mirror(mirror);
1067
1068 // Set the module field in the java_lang_Class instance. This must be done
1069 // after the mirror is set.
1070 set_mirror_module_field(THREAD, k, mirror, module);
1071
1072 if (comp_mirror() != NULL) {
1073 // Set after k->java_mirror() is published, because compiled code running
1074 // concurrently doesn't expect a k to have a null java_mirror.
1075 release_set_array_klass(comp_mirror(), k);
1076 }
1077
1078 if (k->is_inline_klass()) {
1079 oop secondary_mirror = create_secondary_mirror(k, mirror, CHECK);
1080 set_primary_mirror(mirror(), mirror());
1081 set_secondary_mirror(mirror(), secondary_mirror);
1082 }
1083 } else {
1084 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1085 fixup_mirror_list()->push(k);
1086 }
1087 }
1088 // Create the secondary mirror for inline class. Sets all the fields of this java.lang.Class
1089 // instance with the same value as the primary mirror
1090 oop java_lang_Class::create_secondary_mirror(Klass* k, Handle mirror, TRAPS) {
1091 assert(k->is_inline_klass(), "primitive class");
1092 // Allocate mirror (java.lang.Class instance)
1093 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK_0);
1094 Handle secondary_mirror(THREAD, mirror_oop);
1095
1096 java_lang_Class::set_klass(secondary_mirror(), k);
1097 java_lang_Class::set_static_oop_field_count(secondary_mirror(), static_oop_field_count(mirror()));
1098 // ## do we need to set init lock?
1099 java_lang_Class::set_init_lock(secondary_mirror(), init_lock(mirror()));
1100
1101 set_protection_domain(secondary_mirror(), protection_domain(mirror()));
1102 set_class_loader(secondary_mirror(), class_loader(mirror()));
1103 // ## handle if java.base is not yet defined
1104 set_module(secondary_mirror(), module(mirror()));
1105 set_primary_mirror(secondary_mirror(), mirror());
1106 set_secondary_mirror(secondary_mirror(), secondary_mirror());
1107 return secondary_mirror();
1108 }
1109
1110 #if INCLUDE_CDS_JAVA_HEAP
1111 // Clears mirror fields. Static final fields with initial values are reloaded
1112 // from constant pool. The object identity hash is in the object header and is
1113 // not affected.
1114 class ResetMirrorField: public FieldClosure {
1115 private:
1116 Handle _m;
1117
1118 public:
1119 ResetMirrorField(Handle mirror) : _m(mirror) {}
1120
1121 void do_field(fieldDescriptor* fd) {
1122 assert(DumpSharedSpaces, "dump time only");
1123 assert(_m.not_null(), "Mirror cannot be NULL");
1124
1125 if (fd->is_static() && fd->has_initial_value()) {
1126 initialize_static_field_for_dump(fd, _m);
1127 return;
1128 }
1129
1130 BasicType ft = fd->field_type();
1131 switch (ft) {
1132 case T_BYTE:
1133 _m()->byte_field_put(fd->offset(), 0);
1134 break;
1135 case T_CHAR:
1136 _m()->char_field_put(fd->offset(), 0);
1137 break;
1138 case T_DOUBLE:
1139 _m()->double_field_put(fd->offset(), 0);
1140 break;
1141 case T_FLOAT:
1142 _m()->float_field_put(fd->offset(), 0);
1143 break;
1144 case T_INT:
1145 _m()->int_field_put(fd->offset(), 0);
1146 break;
1147 case T_LONG:
1148 _m()->long_field_put(fd->offset(), 0);
1149 break;
1150 case T_SHORT:
1151 _m()->short_field_put(fd->offset(), 0);
1152 break;
1153 case T_BOOLEAN:
1154 _m()->bool_field_put(fd->offset(), false);
1155 break;
1156 case T_PRIMITIVE_OBJECT:
1157 case T_ARRAY:
1158 case T_OBJECT: {
1159 // It might be useful to cache the String field, but
1160 // for now just clear out any reference field
1161 oop o = _m()->obj_field(fd->offset());
1162 _m()->obj_field_put(fd->offset(), NULL);
1163 break;
1164 }
1165 default:
1166 ShouldNotReachHere();
1167 break;
1168 }
1169 }
1170 };
1171
1172 static void set_klass_field_in_archived_mirror(oop mirror_obj, int offset, Klass* k) {
1173 assert(java_lang_Class::is_instance(mirror_obj), "must be");
1174 // this is the copy of k in the output buffer
1175 Klass* copy = ArchiveBuilder::get_relocated_klass(k);
1176
1177 // This is the address of k, if the archive is loaded at the requested location
1178 Klass* def = ArchiveBuilder::current()->to_requested(copy);
1179
1180 log_debug(cds, heap, mirror)(
1181 "Relocate mirror metadata field at %d from " PTR_FORMAT " ==> " PTR_FORMAT,
1182 offset, p2i(k), p2i(def));
1183
1184 mirror_obj->metadata_field_put(offset, def);
1185 }
1186
1187 void java_lang_Class::archive_basic_type_mirrors() {
1188 assert(HeapShared::can_write(), "must be");
1189
1190 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1191 BasicType bt = (BasicType)t;
1192 oop m = Universe::_mirrors[t].resolve();
1193 if (m != NULL) {
1194 // Update the field at _array_klass_offset to point to the relocated array klass.
1195 oop archived_m = HeapShared::archive_object(m);
1196 assert(archived_m != NULL, "sanity");
1197 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1198 assert(ak != NULL || t == T_VOID, "should not be NULL");
1199 if (ak != NULL) {
1200 set_klass_field_in_archived_mirror(archived_m, _array_klass_offset, ak);
1201 }
1202
1203 // Clear the fields. Just to be safe
1204 Klass *k = m->klass();
1205 Handle archived_mirror_h(Thread::current(), archived_m);
1206 ResetMirrorField reset(archived_mirror_h);
1207 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1208
1209 log_trace(cds, heap, mirror)(
1210 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1211 type2name(bt), p2i(m), p2i(archived_m));
1212
1213 Universe::replace_mirror(bt, archived_m);
1214 }
1215 }
1216 }
1217 //
1218 // After the mirror object is successfully archived, the archived
1219 // klass is set with _has_archived_raw_mirror flag.
1220 //
1221 // The _has_archived_raw_mirror flag is cleared at runtime when the
1222 // archived mirror is restored. If archived java heap data cannot
1223 // be used at runtime, new mirror object is created for the shared
1224 // class. The _has_archived_raw_mirror is cleared also during the process.
1225 oop java_lang_Class::archive_mirror(Klass* k) {
1226 assert(HeapShared::can_write(), "must be");
1227
1228 // Mirror is already archived
1229 if (k->has_archived_mirror_index()) {
1230 assert(k->archived_java_mirror() != NULL, "no archived mirror");
1231 return k->archived_java_mirror();
1232 }
1233
1234 // No mirror
1235 oop mirror = k->java_mirror();
1236 if (mirror == NULL) {
1237 return NULL;
1238 }
1239
1240 if (k->is_instance_klass()) {
1241 InstanceKlass *ik = InstanceKlass::cast(k);
1242 assert(ik->signers() == NULL, "class with signer should have been excluded");
1243
1244 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1245 ik->is_shared_app_class())) {
1246 // Archiving mirror for classes from non-builtin loaders is not
1247 // supported.
1248 return NULL;
1249 }
1250 }
1251
1252 if (k->is_inline_klass()) {
1253 // Inline types have a primary mirror and a secondary mirror. Don't handle this for now. TODO:CDS
1254 k->clear_java_mirror_handle();
1255 return NULL;
1256 }
1257
1258 // Now start archiving the mirror object
1259 oop archived_mirror = HeapShared::archive_object(mirror);
1260 if (archived_mirror == NULL) {
1261 return NULL;
1262 }
1263
1264 archived_mirror = process_archived_mirror(k, mirror, archived_mirror);
1265 if (archived_mirror == NULL) {
1266 return NULL;
1267 }
1268
1269 k->set_archived_java_mirror(archived_mirror);
1270
1271 ResourceMark rm;
1272 log_trace(cds, heap, mirror)(
1273 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1274 k->external_name(), p2i(mirror), p2i(archived_mirror));
1275
1276 return archived_mirror;
1277 }
1278
1279 // The process is based on create_mirror().
1280 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1281 oop archived_mirror) {
1282 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1283 // to archived metadata and objects below.
1284 Klass *c = archived_mirror->klass();
1285 Handle archived_mirror_h(Thread::current(), archived_mirror);
1286 ResetMirrorField reset(archived_mirror_h);
1287 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1288
1289 if (k->is_array_klass()) {
1290 oop archived_comp_mirror;
1291 if (k->is_typeArray_klass()) {
1292 // The primitive type mirrors are already archived. Get the archived mirror.
1293 oop comp_mirror = component_mirror(mirror);
1294 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1295 assert(archived_comp_mirror != NULL, "Must be");
1296 } else {
1297 assert(k->is_objArray_klass(), "Must be");
1298 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1299 assert(element_klass != NULL, "Must have an element klass");
1300 archived_comp_mirror = archive_mirror(element_klass);
1301 if (archived_comp_mirror == NULL) {
1302 return NULL;
1303 }
1304 }
1305 set_component_mirror(archived_mirror, archived_comp_mirror);
1306 } else {
1307 assert(k->is_instance_klass(), "Must be");
1308
1309 // Reset local static fields in the mirror
1310 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1311
1312 set_init_lock(archived_mirror, NULL);
1313
1314 set_protection_domain(archived_mirror, NULL);
1315 set_signers(archived_mirror, NULL);
1316 set_source_file(archived_mirror, NULL);
1317 }
1318
1319 // clear class loader and mirror_module_field
1320 set_class_loader(archived_mirror, NULL);
1321 set_module(archived_mirror, NULL);
1322
1323 // The archived mirror's field at _klass_offset is still pointing to the original
1324 // klass. Updated the field in the archived mirror to point to the relocated
1325 // klass in the archive.
1326 set_klass_field_in_archived_mirror(archived_mirror, _klass_offset, as_Klass(mirror));
1327
1328 // The field at _array_klass_offset is pointing to the original one dimension
1329 // higher array klass if exists. Relocate the pointer.
1330 Klass *arr = array_klass_acquire(mirror);
1331 if (arr != NULL) {
1332 set_klass_field_in_archived_mirror(archived_mirror, _array_klass_offset, arr);
1333 }
1334 return archived_mirror;
1335 }
1336
1337 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1338 if (MetaspaceShared::relocation_delta() != 0) {
1339 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1340
1341 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1342 if (ak != NULL) {
1343 archived_mirror->metadata_field_put(_array_klass_offset,
1344 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1345 }
1346 }
1347 }
1348
1349 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1350 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1351
1352 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1353 archived_mirror->metadata_field_put(_klass_offset,
1354 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1355
1356 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1357 if (ak != NULL) {
1358 archived_mirror->metadata_field_put(_array_klass_offset,
1359 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1360 }
1361 }
1362
1363
1364 // Returns true if the mirror is updated, false if no archived mirror
1365 // data is present. After the archived mirror object is restored, the
1366 // shared klass' _has_raw_archived_mirror flag is cleared.
1367 bool java_lang_Class::restore_archived_mirror(Klass *k,
1368 Handle class_loader, Handle module,
1369 Handle protection_domain, TRAPS) {
1370 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1371 // see more details in vmClasses::resolve_all().
1372 if (!vmClasses::Class_klass_loaded()) {
1373 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1374 fixup_mirror_list()->push(k);
1375 return true;
1376 }
1377
1378 oop m = k->archived_java_mirror();
1379 assert(m != NULL, "must have stored non-null archived mirror");
1380
1381 // Sanity: clear it now to prevent re-initialization if any of the following fails
1382 k->clear_archived_mirror_index();
1383
1384 // mirror is archived, restore
1385 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1386 if (HeapShared::is_mapped()) {
1387 assert(Universe::heap()->is_archived_object(m), "must be archived mirror object");
1388 }
1389 assert(as_Klass(m) == k, "must be");
1390 Handle mirror(THREAD, m);
1391
1392 if (!k->is_array_klass()) {
1393 // - local static final fields with initial values were initialized at dump time
1394
1395 // create the init_lock
1396 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1397 set_init_lock(mirror(), r);
1398
1399 if (protection_domain.not_null()) {
1400 set_protection_domain(mirror(), protection_domain());
1401 }
1402 }
1403
1404 assert(class_loader() == k->class_loader(), "should be same");
1405 if (class_loader.not_null()) {
1406 set_class_loader(mirror(), class_loader());
1407 }
1408
1409 k->set_java_mirror(mirror);
1410
1411 set_mirror_module_field(THREAD, k, mirror, module);
1412
1413 if (log_is_enabled(Trace, cds, heap, mirror)) {
1414 ResourceMark rm(THREAD);
1415 log_trace(cds, heap, mirror)(
1416 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1417 }
1418
1419 return true;
1420 }
1421 #endif // INCLUDE_CDS_JAVA_HEAP
1422
1423 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1424 assert(_module_offset != 0, "must have been computed already");
1425 set_module(k->java_mirror(), module());
1426 }
1427
1428 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1429 assert(_oop_size_offset != 0, "must be set");
1430 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1431 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1432 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1433 }
1434
1435 int java_lang_Class::static_oop_field_count(oop java_class) {
1436 assert(_static_oop_field_count_offset != 0, "must be set");
1437 return java_class->int_field(_static_oop_field_count_offset);
1438 }
1439
1440 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1441 assert(_static_oop_field_count_offset != 0, "must be set");
1442 java_class->int_field_put(_static_oop_field_count_offset, size);
1443 }
1444
1445 oop java_lang_Class::protection_domain(oop java_class) {
1446 assert(_protection_domain_offset != 0, "must be set");
1447 return java_class->obj_field(_protection_domain_offset);
1448 }
1449 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1450 assert(_protection_domain_offset != 0, "must be set");
1451 java_class->obj_field_put(_protection_domain_offset, pd);
1452 }
1453
1454 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1455 assert(_component_mirror_offset != 0, "must be set");
1456 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1457 }
1458 oop java_lang_Class::component_mirror(oop java_class) {
1459 assert(_component_mirror_offset != 0, "must be set");
1460 return java_class->obj_field(_component_mirror_offset);
1461 }
1462
1463 oop java_lang_Class::primary_mirror(oop java_class) {
1464 assert(_primary_mirror_offset != 0, "must be set");
1465 return java_class->obj_field(_primary_mirror_offset);
1466 }
1467
1468 void java_lang_Class::set_primary_mirror(oop java_class, oop mirror) {
1469 assert(_primary_mirror_offset != 0, "must be set");
1470 java_class->obj_field_put(_primary_mirror_offset, mirror);
1471 }
1472
1473 oop java_lang_Class::secondary_mirror(oop java_class) {
1474 assert(_secondary_mirror_offset != 0, "must be set");
1475 return java_class->obj_field(_secondary_mirror_offset);
1476 }
1477
1478 void java_lang_Class::set_secondary_mirror(oop java_class, oop mirror) {
1479 assert(_secondary_mirror_offset != 0, "must be set");
1480 java_class->obj_field_put(_secondary_mirror_offset, mirror);
1481 }
1482
1483 oop java_lang_Class::init_lock(oop java_class) {
1484 assert(_init_lock_offset != 0, "must be set");
1485 return java_class->obj_field(_init_lock_offset);
1486 }
1487 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1488 assert(_init_lock_offset != 0, "must be set");
1489 java_class->obj_field_put(_init_lock_offset, init_lock);
1490 }
1491
1492 objArrayOop java_lang_Class::signers(oop java_class) {
1493 assert(_signers_offset != 0, "must be set");
1494 return (objArrayOop)java_class->obj_field(_signers_offset);
1495 }
1496 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1497 assert(_signers_offset != 0, "must be set");
1498 java_class->obj_field_put(_signers_offset, signers);
1499 }
1500
1501 oop java_lang_Class::class_data(oop java_class) {
1502 assert(_classData_offset != 0, "must be set");
1503 return java_class->obj_field(_classData_offset);
1504 }
1505 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1506 assert(_classData_offset != 0, "must be set");
1507 java_class->obj_field_put(_classData_offset, class_data);
1508 }
1509
1510 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1511 assert(_class_loader_offset != 0, "offsets should have been initialized");
1512 java_class->obj_field_put(_class_loader_offset, loader);
1513 }
1514
1515 oop java_lang_Class::class_loader(oop java_class) {
1516 assert(_class_loader_offset != 0, "must be set");
1517 return java_class->obj_field(_class_loader_offset);
1518 }
1519
1520 oop java_lang_Class::module(oop java_class) {
1521 assert(_module_offset != 0, "must be set");
1522 return java_class->obj_field(_module_offset);
1523 }
1524
1525 void java_lang_Class::set_module(oop java_class, oop module) {
1526 assert(_module_offset != 0, "must be set");
1527 java_class->obj_field_put(_module_offset, module);
1528 }
1529
1530 oop java_lang_Class::name(Handle java_class, TRAPS) {
1531 assert(_name_offset != 0, "must be set");
1532 oop o = java_class->obj_field(_name_offset);
1533 if (o == NULL) {
1534 o = StringTable::intern(as_external_name(java_class()), THREAD);
1535 java_class->obj_field_put(_name_offset, o);
1536 }
1537 return o;
1538 }
1539
1540 oop java_lang_Class::source_file(oop java_class) {
1541 assert(_source_file_offset != 0, "must be set");
1542 return java_class->obj_field(_source_file_offset);
1543 }
1544
1545 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1546 assert(_source_file_offset != 0, "must be set");
1547 java_class->obj_field_put(_source_file_offset, source_file);
1548 }
1549
1550 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1551 // This should be improved by adding a field at the Java level or by
1552 // introducing a new VM klass (see comment in ClassFileParser)
1553 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1554 if (type != T_VOID) {
1555 Klass* aklass = Universe::typeArrayKlassObj(type);
1556 assert(aklass != NULL, "correct bootstrap");
1557 release_set_array_klass(java_class, aklass);
1558 }
1559 #ifdef ASSERT
1560 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1561 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1562 #endif
1563 return java_class;
1564 }
1565
1566 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1567 assert(is_instance(java_class), "must be a Class object");
1568 java_class->metadata_field_put(_klass_offset, klass);
1569 }
1570
1571
1572 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1573 assert(is_instance(java_class), "must be a Class object");
1574 Symbol* name = NULL;
1575 bool is_instance = false;
1576 bool is_Q_descriptor = false;
1577 if (is_primitive(java_class)) {
1578 name = vmSymbols::type_signature(primitive_type(java_class));
1579 } else {
1580 Klass* k = as_Klass(java_class);
1581 is_instance = k->is_instance_klass();
1582 is_Q_descriptor = k->is_inline_klass() && is_secondary_mirror(java_class);
1583 name = k->name();
1584 }
1585 if (name == NULL) {
1586 st->print("<null>");
1587 return;
1588 }
1589 if (is_instance) {
1590 st->print(is_Q_descriptor ? "Q" : "L");
1591 }
1592 st->write((char*) name->base(), (int) name->utf8_length());
1593 if (is_instance) st->print(";");
1594 }
1595
1596 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1597 assert(is_instance(java_class), "must be a Class object");
1598 Symbol* name;
1599 if (is_primitive(java_class)) {
1600 name = vmSymbols::type_signature(primitive_type(java_class));
1601 // Because this can create a new symbol, the caller has to decrement
1602 // the refcount, so make adjustment here and below for symbols returned
1603 // that are not created or incremented due to a successful lookup.
1604 name->increment_refcount();
1605 } else {
1606 Klass* k = as_Klass(java_class);
1607 if (!k->is_instance_klass()) {
1608 name = k->name();
1609 name->increment_refcount();
1610 } else {
1611 ResourceMark rm;
1612 const char* sigstr;
1613 if (k->is_inline_klass() && is_secondary_mirror(java_class)) {
1614 sigstr = InlineKlass::cast(k)->val_signature_name();
1615 } else {
1616 sigstr = k->signature_name();
1617 }
1618 int siglen = (int) strlen(sigstr);
1619 if (!intern_if_not_found) {
1620 name = SymbolTable::probe(sigstr, siglen);
1621 } else {
1622 name = SymbolTable::new_symbol(sigstr, siglen);
1623 }
1624 }
1625 }
1626 return name;
1627 }
1628
1629 // Returns the Java name for this Java mirror (Resource allocated)
1630 // See Klass::external_name().
1631 // For primitive type Java mirrors, its type name is returned.
1632 const char* java_lang_Class::as_external_name(oop java_class) {
1633 assert(is_instance(java_class), "must be a Class object");
1634 const char* name = NULL;
1635 if (is_primitive(java_class)) {
1636 name = type2name(primitive_type(java_class));
1637 } else {
1638 name = as_Klass(java_class)->external_name();
1639 }
1640 if (name == NULL) {
1641 name = "<null>";
1642 }
1643 return name;
1644 }
1645
1646 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1647 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1648 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1649 return k;
1650 }
1651
1652
1653 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1654 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1655 java_class->release_metadata_field_put(_array_klass_offset, klass);
1656 }
1657
1658
1659 BasicType java_lang_Class::primitive_type(oop java_class) {
1660 assert(is_primitive(java_class), "just checking");
1661 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1662 BasicType type = T_VOID;
1663 if (ak != NULL) {
1664 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1665 type = ArrayKlass::cast(ak)->element_type();
1666 } else {
1667 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1668 }
1669 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1670 return type;
1671 }
1672
1673 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1674 assert(is_instance(java_class), "must be a Class object");
1675 if (is_primitive(java_class)) {
1676 if (reference_klass != NULL)
1677 (*reference_klass) = NULL;
1678 return primitive_type(java_class);
1679 } else {
1680 if (reference_klass != NULL)
1681 (*reference_klass) = as_Klass(java_class);
1682 return T_OBJECT;
1683 }
1684 }
1685
1686
1687 oop java_lang_Class::primitive_mirror(BasicType t) {
1688 oop mirror = Universe::java_mirror(t);
1689 assert(mirror != NULL && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1690 assert(is_primitive(mirror), "must be primitive");
1691 return mirror;
1692 }
1693
1694 #define CLASS_FIELDS_DO(macro) \
1695 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1696 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1697 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1698 macro(_primary_mirror_offset, k, "primaryType", class_signature, false); \
1699 macro(_secondary_mirror_offset, k, "secondaryType", class_signature, false); \
1700 macro(_module_offset, k, "module", module_signature, false); \
1701 macro(_name_offset, k, "name", string_signature, false); \
1702 macro(_classData_offset, k, "classData", object_signature, false);
1703
1704 void java_lang_Class::compute_offsets() {
1705 if (_offsets_computed) {
1706 return;
1707 }
1708
1709 _offsets_computed = true;
1710
1711 InstanceKlass* k = vmClasses::Class_klass();
1712 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1713
1714 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1715 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1716 // GC treats them the same.
1717 _init_lock_offset = _component_mirror_offset;
1718
1719 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1720 }
1721
1722 #if INCLUDE_CDS
1723 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1724 f->do_bool(&_offsets_computed);
1725 f->do_u4((u4*)&_init_lock_offset);
1726
1727 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1728
1729 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1730 }
1731 #endif
1732
1733 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1734 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1735 return the_class_mirror->int_field(_classRedefinedCount_offset);
1736 }
1737
1738 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1739 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1740 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1741 }
1742
1743
1744 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1745 // platform thread structure, and a eetop offset which was used for thread
1746 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1747 // merged, so in the HotSpot VM we just use the eetop field for the thread
1748 // instead of the privateInfo_offset.
1749 //
1750 // Note: The stackSize field is only present starting in 1.4.
1751
1752 int java_lang_Thread::_name_offset;
1753 int java_lang_Thread::_group_offset;
1754 int java_lang_Thread::_contextClassLoader_offset;
1755 int java_lang_Thread::_inheritedAccessControlContext_offset;
1756 int java_lang_Thread::_priority_offset;
1757 int java_lang_Thread::_eetop_offset;
1758 int java_lang_Thread::_interrupted_offset;
1759 int java_lang_Thread::_daemon_offset;
1760 int java_lang_Thread::_stillborn_offset;
1761 int java_lang_Thread::_stackSize_offset;
1762 int java_lang_Thread::_tid_offset;
1763 int java_lang_Thread::_thread_status_offset;
1764 int java_lang_Thread::_park_blocker_offset;
1765
1766 #define THREAD_FIELDS_DO(macro) \
1767 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1768 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_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(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1772 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1773 macro(_eetop_offset, k, "eetop", long_signature, false); \
1774 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1775 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1776 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1777 macro(_tid_offset, k, "tid", long_signature, false); \
1778 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1779 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1780
1781 void java_lang_Thread::compute_offsets() {
1782 assert(_group_offset == 0, "offsets should be initialized only once");
1783
1784 InstanceKlass* k = vmClasses::Thread_klass();
1785 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1786 }
1787
1788 #if INCLUDE_CDS
1789 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1790 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1791 }
1792 #endif
1793
1794 JavaThread* java_lang_Thread::thread(oop java_thread) {
1795 return (JavaThread*)java_thread->address_field(_eetop_offset);
1796 }
1797
1798
1799 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1800 java_thread->address_field_put(_eetop_offset, (address)thread);
1801 }
1802
1803 bool java_lang_Thread::interrupted(oop java_thread) {
1804 // Make sure the caller can safely access oops.
1805 assert(Thread::current()->is_VM_thread() ||
1806 (JavaThread::current()->thread_state() != _thread_blocked &&
1807 JavaThread::current()->thread_state() != _thread_in_native),
1808 "Unsafe access to oop");
1809 return java_thread->bool_field_volatile(_interrupted_offset);
1810 }
1811
1812 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1813 // Make sure the caller can safely access oops.
1814 assert(Thread::current()->is_VM_thread() ||
1815 (JavaThread::current()->thread_state() != _thread_blocked &&
1816 JavaThread::current()->thread_state() != _thread_in_native),
1817 "Unsafe access to oop");
1818 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1819 }
1820
1821
1822 oop java_lang_Thread::name(oop java_thread) {
1823 return java_thread->obj_field(_name_offset);
1824 }
1825
1826
1827 void java_lang_Thread::set_name(oop java_thread, oop name) {
1828 java_thread->obj_field_put(_name_offset, name);
1829 }
1830
1831
1832 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1833 return (ThreadPriority)java_thread->int_field(_priority_offset);
1834 }
1835
1836
1837 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1838 java_thread->int_field_put(_priority_offset, priority);
1839 }
1840
1841
1842 oop java_lang_Thread::threadGroup(oop java_thread) {
1843 return java_thread->obj_field(_group_offset);
1844 }
1845
1846
1847 bool java_lang_Thread::is_stillborn(oop java_thread) {
1848 return java_thread->bool_field(_stillborn_offset) != 0;
1849 }
1850
1851
1852 // We never have reason to turn the stillborn bit off
1853 void java_lang_Thread::set_stillborn(oop java_thread) {
1854 java_thread->bool_field_put(_stillborn_offset, true);
1855 }
1856
1857
1858 bool java_lang_Thread::is_alive(oop java_thread) {
1859 JavaThread* thr = java_lang_Thread::thread(java_thread);
1860 return (thr != NULL);
1861 }
1862
1863
1864 bool java_lang_Thread::is_daemon(oop java_thread) {
1865 return java_thread->bool_field(_daemon_offset) != 0;
1866 }
1867
1868
1869 void java_lang_Thread::set_daemon(oop java_thread) {
1870 java_thread->bool_field_put(_daemon_offset, true);
1871 }
1872
1873 oop java_lang_Thread::context_class_loader(oop java_thread) {
1874 return java_thread->obj_field(_contextClassLoader_offset);
1875 }
1876
1877 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1878 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1879 }
1880
1881
1882 jlong java_lang_Thread::stackSize(oop java_thread) {
1883 return java_thread->long_field(_stackSize_offset);
1884 }
1885
1886 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1887 void java_lang_Thread::set_thread_status(oop java_thread,
1888 JavaThreadStatus status) {
1889 java_thread->int_field_put(_thread_status_offset, static_cast<int>(status));
1890 }
1891
1892 // Read thread status value from threadStatus field in java.lang.Thread java class.
1893 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1894 // Make sure the caller is operating on behalf of the VM or is
1895 // running VM code (state == _thread_in_vm).
1896 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1897 JavaThread::current()->thread_state() == _thread_in_vm,
1898 "Java Thread is not running in vm");
1899 return static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1900 }
1901
1902
1903 jlong java_lang_Thread::thread_id(oop java_thread) {
1904 return java_thread->long_field(_tid_offset);
1905 }
1906
1907 oop java_lang_Thread::park_blocker(oop java_thread) {
1908 return java_thread->obj_field(_park_blocker_offset);
1909 }
1910
1911 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1912 JavaThreadStatus status = static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1913 switch (status) {
1914 case JavaThreadStatus::NEW : return "NEW";
1915 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1916 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1917 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1918 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1919 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1920 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1921 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1922 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1923 default : return "UNKNOWN";
1924 };
1925 }
1926 int java_lang_ThreadGroup::_parent_offset;
1927 int java_lang_ThreadGroup::_name_offset;
1928 int java_lang_ThreadGroup::_threads_offset;
1929 int java_lang_ThreadGroup::_groups_offset;
1930 int java_lang_ThreadGroup::_maxPriority_offset;
1931 int java_lang_ThreadGroup::_destroyed_offset;
1932 int java_lang_ThreadGroup::_daemon_offset;
1933 int java_lang_ThreadGroup::_nthreads_offset;
1934 int java_lang_ThreadGroup::_ngroups_offset;
1935
1936 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1937 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1938 return java_thread_group->obj_field(_parent_offset);
1939 }
1940
1941 // ("name as oop" accessor is not necessary)
1942
1943 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1944 oop name = java_thread_group->obj_field(_name_offset);
1945 // ThreadGroup.name can be null
1946 if (name != NULL) {
1947 return java_lang_String::as_utf8_string(name);
1948 }
1949 return NULL;
1950 }
1951
1952 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1953 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1954 return java_thread_group->int_field(_nthreads_offset);
1955 }
1956
1957 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1958 oop threads = java_thread_group->obj_field(_threads_offset);
1959 assert(threads != NULL, "threadgroups should have threads");
1960 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1961 return objArrayOop(threads);
1962 }
1963
1964 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1965 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1966 return java_thread_group->int_field(_ngroups_offset);
1967 }
1968
1969 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1970 oop groups = java_thread_group->obj_field(_groups_offset);
1971 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1972 return objArrayOop(groups);
1973 }
1974
1975 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1976 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1977 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1978 }
1979
1980 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1981 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1982 return java_thread_group->bool_field(_destroyed_offset) != 0;
1983 }
1984
1985 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1986 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1987 return java_thread_group->bool_field(_daemon_offset) != 0;
1988 }
1989
1990 #define THREADGROUP_FIELDS_DO(macro) \
1991 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1992 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1993 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1994 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1995 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1996 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1997 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1998 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1999 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
2000
2001 void java_lang_ThreadGroup::compute_offsets() {
2002 assert(_parent_offset == 0, "offsets should be initialized only once");
2003
2004 InstanceKlass* k = vmClasses::ThreadGroup_klass();
2005 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2006 }
2007
2008 #if INCLUDE_CDS
2009 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
2010 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2011 }
2012 #endif
2013
2014 // java_lang_Throwable
2015
2016 int java_lang_Throwable::_backtrace_offset;
2017 int java_lang_Throwable::_detailMessage_offset;
2018 int java_lang_Throwable::_stackTrace_offset;
2019 int java_lang_Throwable::_depth_offset;
2020 int java_lang_Throwable::_cause_offset;
2021 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
2022
2023 #define THROWABLE_FIELDS_DO(macro) \
2024 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
2025 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
2026 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2027 macro(_depth_offset, k, "depth", int_signature, false); \
2028 macro(_cause_offset, k, "cause", throwable_signature, false); \
2029 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2030
2031 void java_lang_Throwable::compute_offsets() {
2032 InstanceKlass* k = vmClasses::Throwable_klass();
2033 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2034 }
2035
2036 #if INCLUDE_CDS
2037 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2038 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2039 }
2040 #endif
2041
2042 oop java_lang_Throwable::unassigned_stacktrace() {
2043 InstanceKlass* ik = vmClasses::Throwable_klass();
2044 oop base = ik->static_field_base_raw();
2045 return base->obj_field(_static_unassigned_stacktrace_offset);
2046 }
2047
2048 oop java_lang_Throwable::backtrace(oop throwable) {
2049 return throwable->obj_field_acquire(_backtrace_offset);
2050 }
2051
2052
2053 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2054 throwable->release_obj_field_put(_backtrace_offset, value);
2055 }
2056
2057 int java_lang_Throwable::depth(oop throwable) {
2058 return throwable->int_field(_depth_offset);
2059 }
2060
2061 void java_lang_Throwable::set_depth(oop throwable, int value) {
2062 throwable->int_field_put(_depth_offset, value);
2063 }
2064
2065 oop java_lang_Throwable::message(oop throwable) {
2066 return throwable->obj_field(_detailMessage_offset);
2067 }
2068
2069 oop java_lang_Throwable::cause(oop throwable) {
2070 return throwable->obj_field(_cause_offset);
2071 }
2072
2073 // Return Symbol for detailed_message or NULL
2074 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2075 PreserveExceptionMark pm(Thread::current());
2076 oop detailed_message = java_lang_Throwable::message(throwable);
2077 if (detailed_message != NULL) {
2078 return java_lang_String::as_symbol(detailed_message);
2079 }
2080 return NULL;
2081 }
2082
2083 void java_lang_Throwable::set_message(oop throwable, oop value) {
2084 throwable->obj_field_put(_detailMessage_offset, value);
2085 }
2086
2087
2088 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2089 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2090 }
2091
2092 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2093 set_stacktrace(throwable, NULL);
2094 }
2095
2096
2097 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2098 ResourceMark rm;
2099 Klass* k = throwable->klass();
2100 assert(k != NULL, "just checking");
2101 st->print("%s", k->external_name());
2102 oop msg = message(throwable);
2103 if (msg != NULL) {
2104 st->print(": %s", java_lang_String::as_utf8_string(msg));
2105 }
2106 }
2107
2108 // After this many redefines, the stack trace is unreliable.
2109 const int MAX_VERSION = USHRT_MAX;
2110
2111 static inline bool version_matches(Method* method, int version) {
2112 assert(version < MAX_VERSION, "version is too big");
2113 return method != NULL && (method->constants()->version() == version);
2114 }
2115
2116 // This class provides a simple wrapper over the internal structure of
2117 // exception backtrace to insulate users of the backtrace from needing
2118 // to know what it looks like.
2119 // The code of this class is not GC safe. Allocations can only happen
2120 // in expand().
2121 class BacktraceBuilder: public StackObj {
2122 friend class BacktraceIterator;
2123 private:
2124 Handle _backtrace;
2125 objArrayOop _head;
2126 typeArrayOop _methods;
2127 typeArrayOop _bcis;
2128 objArrayOop _mirrors;
2129 typeArrayOop _names; // Needed to insulate method name against redefinition.
2130 // True if the top frame of the backtrace is omitted because it shall be hidden.
2131 bool _has_hidden_top_frame;
2132 int _index;
2133 NoSafepointVerifier _nsv;
2134
2135 enum {
2136 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2137 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2138 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2139 trace_names_offset = java_lang_Throwable::trace_names_offset,
2140 trace_next_offset = java_lang_Throwable::trace_next_offset,
2141 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2142 trace_size = java_lang_Throwable::trace_size,
2143 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2144 };
2145
2146 // get info out of chunks
2147 static typeArrayOop get_methods(objArrayHandle chunk) {
2148 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2149 assert(methods != NULL, "method array should be initialized in backtrace");
2150 return methods;
2151 }
2152 static typeArrayOop get_bcis(objArrayHandle chunk) {
2153 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2154 assert(bcis != NULL, "bci array should be initialized in backtrace");
2155 return bcis;
2156 }
2157 static objArrayOop get_mirrors(objArrayHandle chunk) {
2158 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2159 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2160 return mirrors;
2161 }
2162 static typeArrayOop get_names(objArrayHandle chunk) {
2163 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2164 assert(names != NULL, "names array should be initialized in backtrace");
2165 return names;
2166 }
2167 static bool has_hidden_top_frame(objArrayHandle chunk) {
2168 oop hidden = chunk->obj_at(trace_hidden_offset);
2169 return hidden != NULL;
2170 }
2171
2172 public:
2173
2174 // constructor for new backtrace
2175 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2176 expand(CHECK);
2177 _backtrace = Handle(THREAD, _head);
2178 _index = 0;
2179 }
2180
2181 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2182 _methods = get_methods(backtrace);
2183 _bcis = get_bcis(backtrace);
2184 _mirrors = get_mirrors(backtrace);
2185 _names = get_names(backtrace);
2186 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2187 assert(_methods->length() == _bcis->length() &&
2188 _methods->length() == _mirrors->length() &&
2189 _mirrors->length() == _names->length(),
2190 "method and source information arrays should match");
2191
2192 // head is the preallocated backtrace
2193 _head = backtrace();
2194 _backtrace = Handle(thread, _head);
2195 _index = 0;
2196 }
2197
2198 void expand(TRAPS) {
2199 objArrayHandle old_head(THREAD, _head);
2200 PauseNoSafepointVerifier pnsv(&_nsv);
2201
2202 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2203 objArrayHandle new_head(THREAD, head);
2204
2205 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2206 typeArrayHandle new_methods(THREAD, methods);
2207
2208 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2209 typeArrayHandle new_bcis(THREAD, bcis);
2210
2211 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2212 objArrayHandle new_mirrors(THREAD, mirrors);
2213
2214 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2215 typeArrayHandle new_names(THREAD, names);
2216
2217 if (!old_head.is_null()) {
2218 old_head->obj_at_put(trace_next_offset, new_head());
2219 }
2220 new_head->obj_at_put(trace_methods_offset, new_methods());
2221 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2222 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2223 new_head->obj_at_put(trace_names_offset, new_names());
2224 new_head->obj_at_put(trace_hidden_offset, NULL);
2225
2226 _head = new_head();
2227 _methods = new_methods();
2228 _bcis = new_bcis();
2229 _mirrors = new_mirrors();
2230 _names = new_names();
2231 _index = 0;
2232 }
2233
2234 oop backtrace() {
2235 return _backtrace();
2236 }
2237
2238 inline void push(Method* method, int bci, TRAPS) {
2239 // Smear the -1 bci to 0 since the array only holds unsigned
2240 // shorts. The later line number lookup would just smear the -1
2241 // to a 0 even if it could be recorded.
2242 if (bci == SynchronizationEntryBCI) bci = 0;
2243
2244 if (_index >= trace_chunk_size) {
2245 methodHandle mhandle(THREAD, method);
2246 expand(CHECK);
2247 method = mhandle();
2248 }
2249
2250 _methods->ushort_at_put(_index, method->orig_method_idnum());
2251 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2252
2253 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2254 // klass owning the symbols alive so their refcounts aren't decremented.
2255 Symbol* name = method->name();
2256 _names->symbol_at_put(_index, name);
2257
2258 // We need to save the mirrors in the backtrace to keep the class
2259 // from being unloaded while we still have this stack trace.
2260 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2261 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2262 _index++;
2263 }
2264
2265 void set_has_hidden_top_frame() {
2266 if (!_has_hidden_top_frame) {
2267 // It would be nice to add java/lang/Boolean::TRUE here
2268 // to indicate that this backtrace has a hidden top frame.
2269 // But this code is used before TRUE is allocated.
2270 // Therefore let's just use an arbitrary legal oop
2271 // available right here. _methods is a short[].
2272 assert(_methods != NULL, "we need a legal oop");
2273 _has_hidden_top_frame = true;
2274 _head->obj_at_put(trace_hidden_offset, _methods);
2275 }
2276 }
2277 };
2278
2279 struct BacktraceElement : public StackObj {
2280 int _method_id;
2281 int _bci;
2282 int _version;
2283 Symbol* _name;
2284 Handle _mirror;
2285 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2286 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2287 };
2288
2289 class BacktraceIterator : public StackObj {
2290 int _index;
2291 objArrayHandle _result;
2292 objArrayHandle _mirrors;
2293 typeArrayHandle _methods;
2294 typeArrayHandle _bcis;
2295 typeArrayHandle _names;
2296
2297 void init(objArrayHandle result, Thread* thread) {
2298 // Get method id, bci, version and mirror from chunk
2299 _result = result;
2300 if (_result.not_null()) {
2301 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2302 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2303 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2304 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2305 _index = 0;
2306 }
2307 }
2308 public:
2309 BacktraceIterator(objArrayHandle result, Thread* thread) {
2310 init(result, thread);
2311 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2312 }
2313
2314 BacktraceElement next(Thread* thread) {
2315 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2316 _methods->ushort_at(_index),
2317 Backtrace::version_at(_bcis->int_at(_index)),
2318 Backtrace::bci_at(_bcis->int_at(_index)),
2319 _names->symbol_at(_index));
2320 _index++;
2321
2322 if (_index >= java_lang_Throwable::trace_chunk_size) {
2323 int next_offset = java_lang_Throwable::trace_next_offset;
2324 // Get next chunk
2325 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2326 init(result, thread);
2327 }
2328 return e;
2329 }
2330
2331 bool repeat() {
2332 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2333 }
2334 };
2335
2336
2337 // Print stack trace element to resource allocated buffer
2338 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2339 int version, int bci, Symbol* name) {
2340 ResourceMark rm;
2341
2342 // Get strings and string lengths
2343 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2344 const char* klass_name = holder->external_name();
2345 int buf_len = (int)strlen(klass_name);
2346
2347 char* method_name = name->as_C_string();
2348 buf_len += (int)strlen(method_name);
2349
2350 char* source_file_name = NULL;
2351 Symbol* source = Backtrace::get_source_file_name(holder, version);
2352 if (source != NULL) {
2353 source_file_name = source->as_C_string();
2354 buf_len += (int)strlen(source_file_name);
2355 }
2356
2357 char *module_name = NULL, *module_version = NULL;
2358 ModuleEntry* module = holder->module();
2359 if (module->is_named()) {
2360 module_name = module->name()->as_C_string();
2361 buf_len += (int)strlen(module_name);
2362 if (module->version() != NULL) {
2363 module_version = module->version()->as_C_string();
2364 buf_len += (int)strlen(module_version);
2365 }
2366 }
2367
2368 // Allocate temporary buffer with extra space for formatting and line number
2369 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2370
2371 // Print stack trace line in buffer
2372 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2373
2374 // Print module information
2375 if (module_name != NULL) {
2376 if (module_version != NULL) {
2377 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2378 } else {
2379 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2380 }
2381 }
2382
2383 // The method can be NULL if the requested class version is gone
2384 Method* method = holder->method_with_orig_idnum(method_id, version);
2385 if (!version_matches(method, version)) {
2386 strcat(buf, "Redefined)");
2387 } else {
2388 int line_number = Backtrace::get_line_number(method, bci);
2389 if (line_number == -2) {
2390 strcat(buf, "Native Method)");
2391 } else {
2392 if (source_file_name != NULL && (line_number != -1)) {
2393 // Sourcename and linenumber
2394 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2395 } else if (source_file_name != NULL) {
2396 // Just sourcename
2397 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2398 } else {
2399 // Neither sourcename nor linenumber
2400 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2401 }
2402 CompiledMethod* nm = method->code();
2403 if (WizardMode && nm != NULL) {
2404 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2405 }
2406 }
2407 }
2408
2409 st->print_cr("%s", buf);
2410 }
2411
2412 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2413 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2414 int method_id = method->orig_method_idnum();
2415 int version = method->constants()->version();
2416 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2417 }
2418
2419 /**
2420 * Print the throwable message and its stack trace plus all causes by walking the
2421 * cause chain. The output looks the same as of Throwable.printStackTrace().
2422 */
2423 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2424 // First, print the message.
2425 print(throwable(), st);
2426 st->cr();
2427
2428 // Now print the stack trace.
2429 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2430 while (throwable.not_null()) {
2431 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2432 if (result.is_null()) {
2433 st->print_raw_cr("\t<<no stack trace available>>");
2434 return;
2435 }
2436 BacktraceIterator iter(result, THREAD);
2437
2438 while (iter.repeat()) {
2439 BacktraceElement bte = iter.next(THREAD);
2440 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2441 }
2442 {
2443 // Call getCause() which doesn't necessarily return the _cause field.
2444 ExceptionMark em(THREAD);
2445 JavaValue cause(T_OBJECT);
2446 JavaCalls::call_virtual(&cause,
2447 throwable,
2448 throwable->klass(),
2449 vmSymbols::getCause_name(),
2450 vmSymbols::void_throwable_signature(),
2451 THREAD);
2452 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2453 if (HAS_PENDING_EXCEPTION) {
2454 CLEAR_PENDING_EXCEPTION;
2455 throwable = Handle();
2456 } else {
2457 throwable = Handle(THREAD, cause.get_oop());
2458 if (throwable.not_null()) {
2459 st->print("Caused by: ");
2460 print(throwable(), st);
2461 st->cr();
2462 }
2463 }
2464 }
2465 }
2466 }
2467
2468 /**
2469 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2470 */
2471 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2472 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2473 JavaValue result(T_VOID);
2474 JavaCalls::call_virtual(&result,
2475 throwable,
2476 vmClasses::Throwable_klass(),
2477 vmSymbols::printStackTrace_name(),
2478 vmSymbols::void_method_signature(),
2479 THREAD);
2480 }
2481
2482 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2483 if (!StackTraceInThrowable) return;
2484 ResourceMark rm(THREAD);
2485
2486 // Start out by clearing the backtrace for this object, in case the VM
2487 // runs out of memory while allocating the stack trace
2488 set_backtrace(throwable(), NULL);
2489 // Clear lazily constructed Java level stacktrace if refilling occurs
2490 // This is unnecessary in 1.7+ but harmless
2491 clear_stacktrace(throwable());
2492
2493 int max_depth = MaxJavaStackTraceDepth;
2494 JavaThread* thread = THREAD;
2495
2496 BacktraceBuilder bt(CHECK);
2497
2498 // If there is no Java frame just return the method that was being called
2499 // with bci 0
2500 if (!thread->has_last_Java_frame()) {
2501 if (max_depth >= 1 && method() != NULL) {
2502 bt.push(method(), 0, CHECK);
2503 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2504 set_depth(throwable(), 1);
2505 set_backtrace(throwable(), bt.backtrace());
2506 }
2507 return;
2508 }
2509
2510 // Instead of using vframe directly, this version of fill_in_stack_trace
2511 // basically handles everything by hand. This significantly improved the
2512 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2513 // See bug 6333838 for more details.
2514 // The "ASSERT" here is to verify this method generates the exactly same stack
2515 // trace as utilizing vframe.
2516 #ifdef ASSERT
2517 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2518 #endif
2519 int total_count = 0;
2520 RegisterMap map(thread, false /* update */, false /* process_frames */);
2521 int decode_offset = 0;
2522 CompiledMethod* nm = NULL;
2523 bool skip_fillInStackTrace_check = false;
2524 bool skip_throwableInit_check = false;
2525 bool skip_hidden = !ShowHiddenFrames;
2526
2527 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2528 Method* method = NULL;
2529 int bci = 0;
2530
2531 // Compiled java method case.
2532 if (decode_offset != 0) {
2533 DebugInfoReadStream stream(nm, decode_offset);
2534 decode_offset = stream.read_int();
2535 method = (Method*)nm->metadata_at(stream.read_int());
2536 bci = stream.read_bci();
2537 } else {
2538 if (fr.is_first_frame()) break;
2539 address pc = fr.pc();
2540 if (fr.is_interpreted_frame()) {
2541 address bcp = fr.interpreter_frame_bcp();
2542 method = fr.interpreter_frame_method();
2543 bci = method->bci_from(bcp);
2544 fr = fr.sender(&map);
2545 } else {
2546 CodeBlob* cb = fr.cb();
2547 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2548 // but non nmethod
2549 fr = fr.sender(&map);
2550 if (cb == NULL || !cb->is_compiled()) {
2551 continue;
2552 }
2553 nm = cb->as_compiled_method();
2554 if (nm->method()->is_native()) {
2555 method = nm->method();
2556 bci = 0;
2557 } else {
2558 PcDesc* pd = nm->pc_desc_at(pc);
2559 decode_offset = pd->scope_decode_offset();
2560 // if decode_offset is not equal to 0, it will execute the
2561 // "compiled java method case" at the beginning of the loop.
2562 continue;
2563 }
2564 }
2565 }
2566 #ifdef ASSERT
2567 assert(st.method() == method && st.bci() == bci,
2568 "Wrong stack trace");
2569 st.next();
2570 #endif
2571
2572 // the format of the stacktrace will be:
2573 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2574 // - 0 or more <init> methods for the exception class (skipped)
2575 // - rest of the stack
2576
2577 if (!skip_fillInStackTrace_check) {
2578 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2579 throwable->is_a(method->method_holder())) {
2580 continue;
2581 }
2582 else {
2583 skip_fillInStackTrace_check = true; // gone past them all
2584 }
2585 }
2586 if (!skip_throwableInit_check) {
2587 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2588
2589 // skip <init> methods of the exception class and superclasses
2590 // This is similar to classic VM (before HotSpot).
2591 if (method->is_object_constructor() &&
2592 throwable->is_a(method->method_holder())) {
2593 continue;
2594 } else {
2595 // there are none or we've seen them all - either way stop checking
2596 skip_throwableInit_check = true;
2597 }
2598 }
2599 if (method->is_hidden()) {
2600 if (skip_hidden) {
2601 if (total_count == 0) {
2602 // The top frame will be hidden from the stack trace.
2603 bt.set_has_hidden_top_frame();
2604 }
2605 continue;
2606 }
2607 }
2608 bt.push(method, bci, CHECK);
2609 total_count++;
2610 }
2611
2612 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2613
2614 // Put completed stack trace into throwable object
2615 set_backtrace(throwable(), bt.backtrace());
2616 set_depth(throwable(), total_count);
2617 }
2618
2619 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2620 // No-op if stack trace is disabled
2621 if (!StackTraceInThrowable) {
2622 return;
2623 }
2624
2625 // Disable stack traces for some preallocated out of memory errors
2626 if (!Universe::should_fill_in_stack_trace(throwable)) {
2627 return;
2628 }
2629
2630 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2631 PreserveExceptionMark pm(THREAD);
2632
2633 fill_in_stack_trace(throwable, method, THREAD);
2634 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2635 // original exception via the PreserveExceptionMark destructor.
2636 CLEAR_PENDING_EXCEPTION;
2637 }
2638
2639 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2640 // Allocate stack trace - backtrace is created but not filled in
2641
2642 // No-op if stack trace is disabled
2643 if (!StackTraceInThrowable) return;
2644 BacktraceBuilder bt(CHECK); // creates a backtrace
2645 set_backtrace(throwable(), bt.backtrace());
2646 }
2647
2648
2649 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2650 // Fill in stack trace into preallocated backtrace (no GC)
2651
2652 // No-op if stack trace is disabled
2653 if (!StackTraceInThrowable) return;
2654
2655 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2656
2657 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2658
2659 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2660 assert(backtrace.not_null(), "backtrace should have been preallocated");
2661
2662 ResourceMark rm(THREAD);
2663 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2664
2665 BacktraceBuilder bt(THREAD, backtrace);
2666
2667 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2668 // methods as preallocated errors aren't created by "java" code.
2669
2670 // fill in as much stack trace as possible
2671 int chunk_count = 0;
2672 for (;!st.at_end(); st.next()) {
2673 bt.push(st.method(), st.bci(), CHECK);
2674 chunk_count++;
2675
2676 // Bail-out for deep stacks
2677 if (chunk_count >= trace_chunk_size) break;
2678 }
2679 set_depth(throwable(), chunk_count);
2680 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2681
2682 // We support the Throwable immutability protocol defined for Java 7.
2683 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2684 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2685 }
2686
2687 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2688 objArrayHandle stack_trace_array_h, TRAPS) {
2689
2690 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2691 THROW(vmSymbols::java_lang_NullPointerException());
2692 }
2693
2694 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2695
2696 if (stack_trace_array_h->length() != depth(throwable())) {
2697 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2698 }
2699
2700 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2701 BacktraceIterator iter(result, THREAD);
2702
2703 int index = 0;
2704 while (iter.repeat()) {
2705 BacktraceElement bte = iter.next(THREAD);
2706
2707 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2708
2709 if (stack_trace_element.is_null()) {
2710 THROW(vmSymbols::java_lang_NullPointerException());
2711 }
2712
2713 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2714 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2715
2716 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2717 method,
2718 bte._version,
2719 bte._bci,
2720 bte._name, CHECK);
2721 }
2722 }
2723
2724 Handle java_lang_Throwable::get_cause_with_stack_trace(Handle throwable, TRAPS) {
2725 // Call to JVM to fill in the stack trace and clear declaringClassObject to
2726 // not keep classes alive in the stack trace.
2727 // call this: public StackTraceElement[] getStackTrace()
2728 assert(throwable.not_null(), "shouldn't be");
2729
2730 JavaValue result(T_ARRAY);
2731 JavaCalls::call_virtual(&result, throwable,
2732 vmClasses::Throwable_klass(),
2733 vmSymbols::getStackTrace_name(),
2734 vmSymbols::getStackTrace_signature(),
2735 CHECK_NH);
2736 Handle stack_trace(THREAD, result.get_oop());
2737 assert(stack_trace->is_objArray(), "Should be an array");
2738
2739 // Throw ExceptionInInitializerError as the cause with this exception in
2740 // the message and stack trace.
2741
2742 // Now create the message with the original exception and thread name.
2743 Symbol* message = java_lang_Throwable::detail_message(throwable());
2744 ResourceMark rm(THREAD);
2745 stringStream st;
2746 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2747 message == nullptr ? "" : ":");
2748 if (message == NULL) {
2749 st.print("[in thread \"%s\"]", THREAD->name());
2750 } else {
2751 st.print("%s [in thread \"%s\"]", message->as_C_string(), THREAD->name());
2752 }
2753
2754 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2755 Handle h_cause = Exceptions::new_exception(THREAD, exception_name, st.as_string());
2756
2757 // If new_exception returns a different exception while creating the exception, return null.
2758 if (h_cause->klass()->name() != exception_name) {
2759 log_info(class, init)("Exception thrown while saving initialization exception %s",
2760 h_cause->klass()->external_name());
2761 return Handle();
2762 }
2763 java_lang_Throwable::set_stacktrace(h_cause(), stack_trace());
2764 // Clear backtrace because the stacktrace should be used instead.
2765 set_backtrace(h_cause(), NULL);
2766 return h_cause;
2767 }
2768
2769 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2770 JavaThread* current = JavaThread::current();
2771 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2772 BacktraceIterator iter(result, current);
2773 // No backtrace available.
2774 if (!iter.repeat()) return false;
2775
2776 // If the exception happened in a frame that has been hidden, i.e.,
2777 // omitted from the back trace, we can not compute the message.
2778 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2779 if (hidden != NULL) {
2780 return false;
2781 }
2782
2783 // Get first backtrace element.
2784 BacktraceElement bte = iter.next(current);
2785
2786 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2787 assert(holder != NULL, "first element should be non-null");
2788 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2789
2790 // Original version is no longer available.
2791 if (m == NULL || !version_matches(m, bte._version)) {
2792 return false;
2793 }
2794
2795 *method = m;
2796 *bci = bte._bci;
2797 return true;
2798 }
2799
2800 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2801 // Allocate java.lang.StackTraceElement instance
2802 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2803 assert(k != NULL, "must be loaded in 1.4+");
2804 if (k->should_be_initialized()) {
2805 k->initialize(CHECK_NULL);
2806 }
2807
2808 Handle element = k->allocate_instance_handle(CHECK_NULL);
2809
2810 int version = method->constants()->version();
2811 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2812 return element();
2813 }
2814
2815 void java_lang_StackTraceElement::fill_in(Handle element,
2816 InstanceKlass* holder, const methodHandle& method,
2817 int version, int bci, Symbol* name, TRAPS) {
2818 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2819
2820 ResourceMark rm(THREAD);
2821 HandleMark hm(THREAD);
2822
2823 // Fill in class name
2824 Handle java_class(THREAD, holder->java_mirror());
2825 oop classname = java_lang_Class::name(java_class, CHECK);
2826 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2827 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2828
2829 oop loader = holder->class_loader();
2830 if (loader != NULL) {
2831 oop loader_name = java_lang_ClassLoader::name(loader);
2832 if (loader_name != NULL)
2833 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2834 }
2835
2836 // Fill in method name
2837 oop methodname = StringTable::intern(name, CHECK);
2838 java_lang_StackTraceElement::set_methodName(element(), methodname);
2839
2840 // Fill in module name and version
2841 ModuleEntry* module = holder->module();
2842 if (module->is_named()) {
2843 oop module_name = StringTable::intern(module->name(), CHECK);
2844 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2845 oop module_version;
2846 if (module->version() != NULL) {
2847 module_version = StringTable::intern(module->version(), CHECK);
2848 } else {
2849 module_version = NULL;
2850 }
2851 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2852 }
2853
2854 if (method() == NULL || !version_matches(method(), version)) {
2855 // The method was redefined, accurate line number information isn't available
2856 java_lang_StackTraceElement::set_fileName(element(), NULL);
2857 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2858 } else {
2859 Symbol* source;
2860 oop source_file;
2861 int line_number;
2862 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2863
2864 java_lang_StackTraceElement::set_fileName(element(), source_file);
2865 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2866 }
2867 }
2868
2869 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2870 InstanceKlass* holder,
2871 int version,
2872 const methodHandle& method,
2873 int bci,
2874 Symbol*& source,
2875 oop& source_file,
2876 int& line_number, TRAPS) {
2877 // Fill in source file name and line number.
2878 source = Backtrace::get_source_file_name(holder, version);
2879 source_file = java_lang_Class::source_file(java_class());
2880 if (source != NULL) {
2881 // Class was not redefined. We can trust its cache if set,
2882 // else we have to initialize it.
2883 if (source_file == NULL) {
2884 source_file = StringTable::intern(source, CHECK);
2885 java_lang_Class::set_source_file(java_class(), source_file);
2886 }
2887 } else {
2888 // Class was redefined. Dump the cache if it was set.
2889 if (source_file != NULL) {
2890 source_file = NULL;
2891 java_lang_Class::set_source_file(java_class(), source_file);
2892 }
2893 }
2894 line_number = Backtrace::get_line_number(method(), bci);
2895 }
2896
2897 #if INCLUDE_JVMCI
2898 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2899 Symbol*& filename, int& line_number, TRAPS) {
2900 ResourceMark rm(THREAD);
2901 HandleMark hm(THREAD);
2902
2903 filename = NULL;
2904 line_number = -1;
2905
2906 oop source_file;
2907 int version = method->constants()->version();
2908 InstanceKlass* holder = method->method_holder();
2909 Handle java_class(THREAD, holder->java_mirror());
2910 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2911 }
2912 #endif // INCLUDE_JVMCI
2913
2914 // java_lang_StackFrameInfo
2915
2916 int java_lang_StackFrameInfo::_memberName_offset;
2917 int java_lang_StackFrameInfo::_bci_offset;
2918 int java_lang_StackFrameInfo::_version_offset;
2919
2920 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2921 macro(_memberName_offset, k, "memberName", object_signature, false); \
2922 macro(_bci_offset, k, "bci", int_signature, false)
2923
2924 void java_lang_StackFrameInfo::compute_offsets() {
2925 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
2926 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2927 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2928 }
2929
2930 #if INCLUDE_CDS
2931 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2932 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2933 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2934 }
2935 #endif
2936
2937 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2938 HandleMark hm(THREAD);
2939 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2940 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2941 // we should expand MemberName::name when Throwable uses StackTrace
2942 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2943 return method;
2944 }
2945
2946 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2947 // set Method* or mid/cpref
2948 HandleMark hm(THREAD);
2949 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2950 InstanceKlass* ik = method->method_holder();
2951 CallInfo info(method(), ik, CHECK);
2952 MethodHandles::init_method_MemberName(mname, info);
2953 // set bci
2954 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2955 // method may be redefined; store the version
2956 int version = method->constants()->version();
2957 assert((jushort)version == version, "version should be short");
2958 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2959 }
2960
2961 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2962 ResourceMark rm(THREAD);
2963 HandleMark hm(THREAD);
2964 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2965 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2966 InstanceKlass* holder = InstanceKlass::cast(clazz);
2967 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2968
2969 short version = stackFrame->short_field(_version_offset);
2970 int bci = stackFrame->int_field(_bci_offset);
2971 Symbol* name = method->name();
2972 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2973 version, bci, name, CHECK);
2974 }
2975
2976 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2977 element->short_field_put(_version_offset, value);
2978 }
2979
2980 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2981 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2982 element->int_field_put(_bci_offset, value);
2983 }
2984
2985 int java_lang_LiveStackFrameInfo::_monitors_offset;
2986 int java_lang_LiveStackFrameInfo::_locals_offset;
2987 int java_lang_LiveStackFrameInfo::_operands_offset;
2988 int java_lang_LiveStackFrameInfo::_mode_offset;
2989
2990 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2991 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2992 macro(_locals_offset, k, "locals", object_array_signature, false); \
2993 macro(_operands_offset, k, "operands", object_array_signature, false); \
2994 macro(_mode_offset, k, "mode", int_signature, false)
2995
2996 void java_lang_LiveStackFrameInfo::compute_offsets() {
2997 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
2998 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2999 }
3000
3001 #if INCLUDE_CDS
3002 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
3003 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3004 }
3005 #endif
3006
3007 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3008 element->obj_field_put(_monitors_offset, value);
3009 }
3010
3011 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3012 element->obj_field_put(_locals_offset, value);
3013 }
3014
3015 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3016 element->obj_field_put(_operands_offset, value);
3017 }
3018
3019 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
3020 element->int_field_put(_mode_offset, value);
3021 }
3022
3023
3024 // java_lang_AccessibleObject
3025
3026 int java_lang_reflect_AccessibleObject::_override_offset;
3027
3028 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
3029 macro(_override_offset, k, "override", bool_signature, false)
3030
3031 void java_lang_reflect_AccessibleObject::compute_offsets() {
3032 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
3033 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3034 }
3035
3036 #if INCLUDE_CDS
3037 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
3038 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3039 }
3040 #endif
3041
3042 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
3043 return (jboolean) reflect->bool_field(_override_offset);
3044 }
3045
3046 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
3047 reflect->bool_field_put(_override_offset, (int) value);
3048 }
3049
3050 // java_lang_reflect_Method
3051
3052 int java_lang_reflect_Method::_clazz_offset;
3053 int java_lang_reflect_Method::_name_offset;
3054 int java_lang_reflect_Method::_returnType_offset;
3055 int java_lang_reflect_Method::_parameterTypes_offset;
3056 int java_lang_reflect_Method::_exceptionTypes_offset;
3057 int java_lang_reflect_Method::_slot_offset;
3058 int java_lang_reflect_Method::_modifiers_offset;
3059 int java_lang_reflect_Method::_signature_offset;
3060 int java_lang_reflect_Method::_annotations_offset;
3061 int java_lang_reflect_Method::_parameter_annotations_offset;
3062 int java_lang_reflect_Method::_annotation_default_offset;
3063
3064 #define METHOD_FIELDS_DO(macro) \
3065 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3066 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3067 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
3068 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3069 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3070 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3071 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3072 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3073 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3074 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
3075 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
3076
3077 void java_lang_reflect_Method::compute_offsets() {
3078 InstanceKlass* k = vmClasses::reflect_Method_klass();
3079 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3080 }
3081
3082 #if INCLUDE_CDS
3083 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3084 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3085 }
3086 #endif
3087
3088 Handle java_lang_reflect_Method::create(TRAPS) {
3089 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3090 Klass* klass = vmClasses::reflect_Method_klass();
3091 // This class is eagerly initialized during VM initialization, since we keep a refence
3092 // to one of the methods
3093 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3094 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3095 }
3096
3097 oop java_lang_reflect_Method::clazz(oop reflect) {
3098 return reflect->obj_field(_clazz_offset);
3099 }
3100
3101 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3102 reflect->obj_field_put(_clazz_offset, value);
3103 }
3104
3105 int java_lang_reflect_Method::slot(oop reflect) {
3106 return reflect->int_field(_slot_offset);
3107 }
3108
3109 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3110 reflect->int_field_put(_slot_offset, value);
3111 }
3112
3113 void java_lang_reflect_Method::set_name(oop method, oop value) {
3114 method->obj_field_put(_name_offset, value);
3115 }
3116
3117 oop java_lang_reflect_Method::return_type(oop method) {
3118 return method->obj_field(_returnType_offset);
3119 }
3120
3121 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3122 method->obj_field_put(_returnType_offset, value);
3123 }
3124
3125 oop java_lang_reflect_Method::parameter_types(oop method) {
3126 return method->obj_field(_parameterTypes_offset);
3127 }
3128
3129 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3130 method->obj_field_put(_parameterTypes_offset, value);
3131 }
3132
3133 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3134 method->obj_field_put(_exceptionTypes_offset, value);
3135 }
3136
3137 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3138 method->int_field_put(_modifiers_offset, value);
3139 }
3140
3141 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3142 method->obj_field_put(_signature_offset, value);
3143 }
3144
3145 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3146 method->obj_field_put(_annotations_offset, value);
3147 }
3148
3149 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3150 method->obj_field_put(_parameter_annotations_offset, value);
3151 }
3152
3153 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3154 method->obj_field_put(_annotation_default_offset, value);
3155 }
3156
3157 int java_lang_reflect_Constructor::_clazz_offset;
3158 int java_lang_reflect_Constructor::_parameterTypes_offset;
3159 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3160 int java_lang_reflect_Constructor::_slot_offset;
3161 int java_lang_reflect_Constructor::_modifiers_offset;
3162 int java_lang_reflect_Constructor::_signature_offset;
3163 int java_lang_reflect_Constructor::_annotations_offset;
3164 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3165
3166 #define CONSTRUCTOR_FIELDS_DO(macro) \
3167 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3168 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3169 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3170 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3171 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3172 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3173 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3174 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3175
3176 void java_lang_reflect_Constructor::compute_offsets() {
3177 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3178 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3179 }
3180
3181 #if INCLUDE_CDS
3182 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3183 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3184 }
3185 #endif
3186
3187 Handle java_lang_reflect_Constructor::create(TRAPS) {
3188 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3189 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3190 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3191 InstanceKlass* ik = InstanceKlass::cast(k);
3192 // Ensure it is initialized
3193 ik->initialize(CHECK_NH);
3194 return ik->allocate_instance_handle(THREAD);
3195 }
3196
3197 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3198 return reflect->obj_field(_clazz_offset);
3199 }
3200
3201 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3202 reflect->obj_field_put(_clazz_offset, value);
3203 }
3204
3205 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3206 return constructor->obj_field(_parameterTypes_offset);
3207 }
3208
3209 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3210 constructor->obj_field_put(_parameterTypes_offset, value);
3211 }
3212
3213 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3214 constructor->obj_field_put(_exceptionTypes_offset, value);
3215 }
3216
3217 int java_lang_reflect_Constructor::slot(oop reflect) {
3218 return reflect->int_field(_slot_offset);
3219 }
3220
3221 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3222 reflect->int_field_put(_slot_offset, value);
3223 }
3224
3225 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3226 constructor->int_field_put(_modifiers_offset, value);
3227 }
3228
3229 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3230 constructor->obj_field_put(_signature_offset, value);
3231 }
3232
3233 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3234 constructor->obj_field_put(_annotations_offset, value);
3235 }
3236
3237 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3238 method->obj_field_put(_parameter_annotations_offset, value);
3239 }
3240
3241 int java_lang_reflect_Field::_clazz_offset;
3242 int java_lang_reflect_Field::_name_offset;
3243 int java_lang_reflect_Field::_type_offset;
3244 int java_lang_reflect_Field::_slot_offset;
3245 int java_lang_reflect_Field::_modifiers_offset;
3246 int java_lang_reflect_Field::_trusted_final_offset;
3247 int java_lang_reflect_Field::_signature_offset;
3248 int java_lang_reflect_Field::_annotations_offset;
3249
3250 #define FIELD_FIELDS_DO(macro) \
3251 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3252 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3253 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3254 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3255 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3256 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3257 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3258 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3259
3260 void java_lang_reflect_Field::compute_offsets() {
3261 InstanceKlass* k = vmClasses::reflect_Field_klass();
3262 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3263 }
3264
3265 #if INCLUDE_CDS
3266 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3267 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3268 }
3269 #endif
3270
3271 Handle java_lang_reflect_Field::create(TRAPS) {
3272 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3273 Symbol* name = vmSymbols::java_lang_reflect_Field();
3274 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3275 InstanceKlass* ik = InstanceKlass::cast(k);
3276 // Ensure it is initialized
3277 ik->initialize(CHECK_NH);
3278 return ik->allocate_instance_handle(THREAD);
3279 }
3280
3281 oop java_lang_reflect_Field::clazz(oop reflect) {
3282 return reflect->obj_field(_clazz_offset);
3283 }
3284
3285 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3286 reflect->obj_field_put(_clazz_offset, value);
3287 }
3288
3289 oop java_lang_reflect_Field::name(oop field) {
3290 return field->obj_field(_name_offset);
3291 }
3292
3293 void java_lang_reflect_Field::set_name(oop field, oop value) {
3294 field->obj_field_put(_name_offset, value);
3295 }
3296
3297 oop java_lang_reflect_Field::type(oop field) {
3298 return field->obj_field(_type_offset);
3299 }
3300
3301 void java_lang_reflect_Field::set_type(oop field, oop value) {
3302 field->obj_field_put(_type_offset, value);
3303 }
3304
3305 int java_lang_reflect_Field::slot(oop reflect) {
3306 return reflect->int_field(_slot_offset);
3307 }
3308
3309 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3310 reflect->int_field_put(_slot_offset, value);
3311 }
3312
3313 int java_lang_reflect_Field::modifiers(oop field) {
3314 return field->int_field(_modifiers_offset);
3315 }
3316
3317 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3318 field->int_field_put(_modifiers_offset, value);
3319 }
3320
3321 void java_lang_reflect_Field::set_trusted_final(oop field) {
3322 field->bool_field_put(_trusted_final_offset, true);
3323 }
3324
3325 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3326 field->obj_field_put(_signature_offset, value);
3327 }
3328
3329 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3330 field->obj_field_put(_annotations_offset, value);
3331 }
3332
3333 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3334 // Allocate java.lang.reflect.RecordComponent instance
3335 HandleMark hm(THREAD);
3336 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3337 assert(ik != NULL, "must be loaded");
3338 ik->initialize(CHECK_NULL);
3339
3340 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3341
3342 Handle decl_class(THREAD, holder->java_mirror());
3343 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3344
3345 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3346 oop component_name = StringTable::intern(name, CHECK_NULL);
3347 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3348
3349 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3350 Handle component_type_h =
3351 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3352 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3353
3354 Method* accessor_method = NULL;
3355 {
3356 // Prepend "()" to type to create the full method signature.
3357 ResourceMark rm(THREAD);
3358 int sig_len = type->utf8_length() + 3; // "()" and null char
3359 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3360 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3361 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3362 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3363 }
3364
3365 if (accessor_method != NULL) {
3366 methodHandle method(THREAD, accessor_method);
3367 oop m = Reflection::new_method(method, false, CHECK_NULL);
3368 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3369 } else {
3370 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3371 }
3372
3373 int sig_index = component->generic_signature_index();
3374 if (sig_index > 0) {
3375 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3376 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3377 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3378 } else {
3379 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3380 }
3381
3382 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3383 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3384
3385 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3386 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3387
3388 return element();
3389 }
3390
3391 int reflect_ConstantPool::_oop_offset;
3392
3393 #define CONSTANTPOOL_FIELDS_DO(macro) \
3394 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3395
3396 void reflect_ConstantPool::compute_offsets() {
3397 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3398 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3399 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3400 }
3401
3402 #if INCLUDE_CDS
3403 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3404 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3405 }
3406 #endif
3407
3408 int java_lang_reflect_Parameter::_name_offset;
3409 int java_lang_reflect_Parameter::_modifiers_offset;
3410 int java_lang_reflect_Parameter::_index_offset;
3411 int java_lang_reflect_Parameter::_executable_offset;
3412
3413 #define PARAMETER_FIELDS_DO(macro) \
3414 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3415 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3416 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3417 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3418
3419 void java_lang_reflect_Parameter::compute_offsets() {
3420 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3421 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3422 }
3423
3424 #if INCLUDE_CDS
3425 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3426 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3427 }
3428 #endif
3429
3430 Handle java_lang_reflect_Parameter::create(TRAPS) {
3431 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3432 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3433 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3434 InstanceKlass* ik = InstanceKlass::cast(k);
3435 // Ensure it is initialized
3436 ik->initialize(CHECK_NH);
3437 return ik->allocate_instance_handle(THREAD);
3438 }
3439
3440 oop java_lang_reflect_Parameter::name(oop param) {
3441 return param->obj_field(_name_offset);
3442 }
3443
3444 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3445 param->obj_field_put(_name_offset, value);
3446 }
3447
3448 int java_lang_reflect_Parameter::modifiers(oop param) {
3449 return param->int_field(_modifiers_offset);
3450 }
3451
3452 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3453 param->int_field_put(_modifiers_offset, value);
3454 }
3455
3456 int java_lang_reflect_Parameter::index(oop param) {
3457 return param->int_field(_index_offset);
3458 }
3459
3460 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3461 param->int_field_put(_index_offset, value);
3462 }
3463
3464 oop java_lang_reflect_Parameter::executable(oop param) {
3465 return param->obj_field(_executable_offset);
3466 }
3467
3468 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3469 param->obj_field_put(_executable_offset, value);
3470 }
3471
3472 // java_lang_Module
3473
3474 int java_lang_Module::_loader_offset;
3475 int java_lang_Module::_name_offset;
3476 int java_lang_Module::_module_entry_offset;
3477
3478 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3479 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3480 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3481 vmSymbols::java_lang_module_init_signature(),
3482 loader, module_name, CHECK_NH);
3483 }
3484
3485 #define MODULE_FIELDS_DO(macro) \
3486 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3487 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3488
3489 void java_lang_Module::compute_offsets() {
3490 InstanceKlass* k = vmClasses::Module_klass();
3491 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3492 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3493 }
3494
3495 #if INCLUDE_CDS
3496 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3497 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3498 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3499 }
3500 #endif
3501
3502 oop java_lang_Module::loader(oop module) {
3503 return module->obj_field(_loader_offset);
3504 }
3505
3506 void java_lang_Module::set_loader(oop module, oop value) {
3507 module->obj_field_put(_loader_offset, value);
3508 }
3509
3510 oop java_lang_Module::name(oop module) {
3511 return module->obj_field(_name_offset);
3512 }
3513
3514 void java_lang_Module::set_name(oop module, oop value) {
3515 module->obj_field_put(_name_offset, value);
3516 }
3517
3518 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3519 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3520 assert(module != NULL, "module can't be null");
3521 assert(oopDesc::is_oop(module), "module must be oop");
3522
3523 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3524 return module_entry;
3525 }
3526
3527 ModuleEntry* java_lang_Module::module_entry(oop module) {
3528 ModuleEntry* module_entry = module_entry_raw(module);
3529 if (module_entry == NULL) {
3530 // If the inject field containing the ModuleEntry* is null then return the
3531 // class loader's unnamed module.
3532 oop loader = java_lang_Module::loader(module);
3533 Handle h_loader = Handle(Thread::current(), loader);
3534 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3535 return loader_cld->unnamed_module();
3536 }
3537 return module_entry;
3538 }
3539
3540 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3541 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3542 assert(module != NULL, "module can't be null");
3543 assert(oopDesc::is_oop(module), "module must be oop");
3544 module->address_field_put(_module_entry_offset, (address)module_entry);
3545 }
3546
3547 Handle reflect_ConstantPool::create(TRAPS) {
3548 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3549 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3550 // Ensure it is initialized
3551 k->initialize(CHECK_NH);
3552 return k->allocate_instance_handle(THREAD);
3553 }
3554
3555
3556 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3557 oop mirror = value->pool_holder()->java_mirror();
3558 // Save the mirror to get back the constant pool.
3559 reflect->obj_field_put(_oop_offset, mirror);
3560 }
3561
3562 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3563
3564 oop mirror = reflect->obj_field(_oop_offset);
3565 Klass* k = java_lang_Class::as_Klass(mirror);
3566 assert(k->is_instance_klass(), "Must be");
3567
3568 // Get the constant pool back from the klass. Since class redefinition
3569 // merges the new constant pool into the old, this is essentially the
3570 // same constant pool as the original. If constant pool merging is
3571 // no longer done in the future, this will have to change to save
3572 // the original.
3573 return InstanceKlass::cast(k)->constants();
3574 }
3575
3576 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3577
3578 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3579 macro(_base_offset, k, "base", object_signature, false)
3580
3581 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3582 InstanceKlass* k = vmClasses::reflect_UnsafeStaticFieldAccessorImpl_klass();
3583 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3584 }
3585
3586 #if INCLUDE_CDS
3587 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3588 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3589 }
3590 #endif
3591
3592 // Support for java_lang_ref_Reference
3593
3594 bool java_lang_ref_Reference::_offsets_initialized;
3595
3596 int java_lang_ref_Reference::_referent_offset;
3597 int java_lang_ref_Reference::_queue_offset;
3598 int java_lang_ref_Reference::_next_offset;
3599 int java_lang_ref_Reference::_discovered_offset;
3600
3601 #define REFERENCE_FIELDS_DO(macro) \
3602 macro(_referent_offset, k, "referent", object_signature, false); \
3603 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3604 macro(_next_offset, k, "next", reference_signature, false); \
3605 macro(_discovered_offset, k, "discovered", reference_signature, false);
3606
3607 void java_lang_ref_Reference::compute_offsets() {
3608 if (_offsets_initialized) {
3609 return;
3610 }
3611 _offsets_initialized = true;
3612 InstanceKlass* k = vmClasses::Reference_klass();
3613 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3614 }
3615
3616 #if INCLUDE_CDS
3617 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3618 f->do_bool(&_offsets_initialized);
3619 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3620 }
3621 #endif
3622
3623 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3624 assert(obj != NULL, "sanity");
3625 if (offset != _referent_offset) {
3626 return false;
3627 }
3628
3629 Klass* k = obj->klass();
3630 if (!k->is_instance_klass()) {
3631 return false;
3632 }
3633
3634 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3635 bool is_reference = ik->reference_type() != REF_NONE;
3636 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3637 return is_reference;
3638 }
3639
3640 int java_lang_boxing_object::_value_offset;
3641 int java_lang_boxing_object::_long_value_offset;
3642
3643 #define BOXING_FIELDS_DO(macro) \
3644 macro(_value_offset, integerKlass, "value", int_signature, false); \
3645 macro(_long_value_offset, longKlass, "value", long_signature, false);
3646
3647 void java_lang_boxing_object::compute_offsets() {
3648 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3649 InstanceKlass* longKlass = vmClasses::Long_klass();
3650 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3651 }
3652
3653 #if INCLUDE_CDS
3654 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3655 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3656 }
3657 #endif
3658
3659 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3660 Klass* k = vmClasses::box_klass(type);
3661 if (k == NULL) return NULL;
3662 InstanceKlass* ik = InstanceKlass::cast(k);
3663 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3664 return ik->allocate_instance(THREAD);
3665 }
3666
3667
3668 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3669 oop box = initialize_and_allocate(type, CHECK_NULL);
3670 if (box == NULL) return NULL;
3671 switch (type) {
3672 case T_BOOLEAN:
3673 box->bool_field_put(_value_offset, value->z);
3674 break;
3675 case T_CHAR:
3676 box->char_field_put(_value_offset, value->c);
3677 break;
3678 case T_FLOAT:
3679 box->float_field_put(_value_offset, value->f);
3680 break;
3681 case T_DOUBLE:
3682 box->double_field_put(_long_value_offset, value->d);
3683 break;
3684 case T_BYTE:
3685 box->byte_field_put(_value_offset, value->b);
3686 break;
3687 case T_SHORT:
3688 box->short_field_put(_value_offset, value->s);
3689 break;
3690 case T_INT:
3691 box->int_field_put(_value_offset, value->i);
3692 break;
3693 case T_LONG:
3694 box->long_field_put(_long_value_offset, value->j);
3695 break;
3696 default:
3697 return NULL;
3698 }
3699 return box;
3700 }
3701
3702
3703 BasicType java_lang_boxing_object::basic_type(oop box) {
3704 if (box == NULL) return T_ILLEGAL;
3705 BasicType type = vmClasses::box_klass_type(box->klass());
3706 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3707 return T_ILLEGAL;
3708 return type;
3709 }
3710
3711
3712 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3713 BasicType type = vmClasses::box_klass_type(box->klass());
3714 switch (type) {
3715 case T_BOOLEAN:
3716 value->z = box->bool_field(_value_offset);
3717 break;
3718 case T_CHAR:
3719 value->c = box->char_field(_value_offset);
3720 break;
3721 case T_FLOAT:
3722 value->f = box->float_field(_value_offset);
3723 break;
3724 case T_DOUBLE:
3725 value->d = box->double_field(_long_value_offset);
3726 break;
3727 case T_BYTE:
3728 value->b = box->byte_field(_value_offset);
3729 break;
3730 case T_SHORT:
3731 value->s = box->short_field(_value_offset);
3732 break;
3733 case T_INT:
3734 value->i = box->int_field(_value_offset);
3735 break;
3736 case T_LONG:
3737 value->j = box->long_field(_long_value_offset);
3738 break;
3739 default:
3740 return T_ILLEGAL;
3741 } // end switch
3742 return type;
3743 }
3744
3745
3746 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3747 BasicType type = vmClasses::box_klass_type(box->klass());
3748 switch (type) {
3749 case T_BOOLEAN:
3750 box->bool_field_put(_value_offset, value->z);
3751 break;
3752 case T_CHAR:
3753 box->char_field_put(_value_offset, value->c);
3754 break;
3755 case T_FLOAT:
3756 box->float_field_put(_value_offset, value->f);
3757 break;
3758 case T_DOUBLE:
3759 box->double_field_put(_long_value_offset, value->d);
3760 break;
3761 case T_BYTE:
3762 box->byte_field_put(_value_offset, value->b);
3763 break;
3764 case T_SHORT:
3765 box->short_field_put(_value_offset, value->s);
3766 break;
3767 case T_INT:
3768 box->int_field_put(_value_offset, value->i);
3769 break;
3770 case T_LONG:
3771 box->long_field_put(_long_value_offset, value->j);
3772 break;
3773 default:
3774 return T_ILLEGAL;
3775 } // end switch
3776 return type;
3777 }
3778
3779
3780 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3781 switch (type) {
3782 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3783 case T_CHAR: st->print("%d", value->c); break;
3784 case T_BYTE: st->print("%d", value->b); break;
3785 case T_SHORT: st->print("%d", value->s); break;
3786 case T_INT: st->print("%d", value->i); break;
3787 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3788 case T_FLOAT: st->print("%f", value->f); break;
3789 case T_DOUBLE: st->print("%lf", value->d); break;
3790 default: st->print("type %d?", type); break;
3791 }
3792 }
3793
3794
3795 // Support for java_lang_ref_SoftReference
3796 //
3797
3798 int java_lang_ref_SoftReference::_timestamp_offset;
3799 int java_lang_ref_SoftReference::_static_clock_offset;
3800
3801 #define SOFTREFERENCE_FIELDS_DO(macro) \
3802 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3803 macro(_static_clock_offset, k, "clock", long_signature, true)
3804
3805 void java_lang_ref_SoftReference::compute_offsets() {
3806 InstanceKlass* k = vmClasses::SoftReference_klass();
3807 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3808 }
3809
3810 #if INCLUDE_CDS
3811 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3812 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3813 }
3814 #endif
3815
3816 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3817 return ref->long_field(_timestamp_offset);
3818 }
3819
3820 jlong java_lang_ref_SoftReference::clock() {
3821 InstanceKlass* ik = vmClasses::SoftReference_klass();
3822 oop base = ik->static_field_base_raw();
3823 return base->long_field(_static_clock_offset);
3824 }
3825
3826 void java_lang_ref_SoftReference::set_clock(jlong value) {
3827 InstanceKlass* ik = vmClasses::SoftReference_klass();
3828 oop base = ik->static_field_base_raw();
3829 base->long_field_put(_static_clock_offset, value);
3830 }
3831
3832 // Support for java_lang_invoke_DirectMethodHandle
3833
3834 int java_lang_invoke_DirectMethodHandle::_member_offset;
3835
3836 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3837 oop member_name = NULL;
3838 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3839 "a DirectMethodHandle oop is expected");
3840 return dmh->obj_field(_member_offset);
3841 }
3842
3843 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3844 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3845
3846 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3847 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3848 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3849 }
3850
3851 #if INCLUDE_CDS
3852 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3853 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3854 }
3855 #endif
3856
3857 // Support for java_lang_invoke_MethodHandle
3858
3859 int java_lang_invoke_MethodHandle::_type_offset;
3860 int java_lang_invoke_MethodHandle::_form_offset;
3861
3862 int java_lang_invoke_MemberName::_clazz_offset;
3863 int java_lang_invoke_MemberName::_name_offset;
3864 int java_lang_invoke_MemberName::_type_offset;
3865 int java_lang_invoke_MemberName::_flags_offset;
3866 int java_lang_invoke_MemberName::_method_offset;
3867 int java_lang_invoke_MemberName::_vmindex_offset;
3868
3869 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3870 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3871
3872 int java_lang_invoke_LambdaForm::_vmentry_offset;
3873
3874 #define METHODHANDLE_FIELDS_DO(macro) \
3875 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3876 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3877
3878 void java_lang_invoke_MethodHandle::compute_offsets() {
3879 InstanceKlass* k = vmClasses::MethodHandle_klass();
3880 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3881 }
3882
3883 #if INCLUDE_CDS
3884 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3885 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3886 }
3887 #endif
3888
3889 #define MEMBERNAME_FIELDS_DO(macro) \
3890 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3891 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3892 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3893 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3894 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3895
3896 void java_lang_invoke_MemberName::compute_offsets() {
3897 InstanceKlass* k = vmClasses::MemberName_klass();
3898 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3899 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3900 }
3901
3902 #if INCLUDE_CDS
3903 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3904 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3905 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3906 }
3907 #endif
3908
3909 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3910 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
3911 assert(k != NULL, "jdk mismatch");
3912 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3913 }
3914
3915 #if INCLUDE_CDS
3916 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3917 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3918 }
3919 #endif
3920
3921 #define LAMBDAFORM_FIELDS_DO(macro) \
3922 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3923
3924 void java_lang_invoke_LambdaForm::compute_offsets() {
3925 InstanceKlass* k = vmClasses::LambdaForm_klass();
3926 assert (k != NULL, "jdk mismatch");
3927 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3928 }
3929
3930 #if INCLUDE_CDS
3931 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3932 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3933 }
3934 #endif
3935
3936 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3937 return obj != NULL && is_subclass(obj->klass());
3938 }
3939
3940 int jdk_internal_invoke_NativeEntryPoint::_shadow_space_offset;
3941 int jdk_internal_invoke_NativeEntryPoint::_argMoves_offset;
3942 int jdk_internal_invoke_NativeEntryPoint::_returnMoves_offset;
3943 int jdk_internal_invoke_NativeEntryPoint::_need_transition_offset;
3944 int jdk_internal_invoke_NativeEntryPoint::_method_type_offset;
3945 int jdk_internal_invoke_NativeEntryPoint::_name_offset;
3946
3947 #define NEP_FIELDS_DO(macro) \
3948 macro(_shadow_space_offset, k, "shadowSpace", int_signature, false); \
3949 macro(_argMoves_offset, k, "argMoves", long_array_signature, false); \
3950 macro(_returnMoves_offset, k, "returnMoves", long_array_signature, false); \
3951 macro(_need_transition_offset, k, "needTransition", bool_signature, false); \
3952 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
3953 macro(_name_offset, k, "name", string_signature, false);
3954
3955 bool jdk_internal_invoke_NativeEntryPoint::is_instance(oop obj) {
3956 return obj != NULL && is_subclass(obj->klass());
3957 }
3958
3959 void jdk_internal_invoke_NativeEntryPoint::compute_offsets() {
3960 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
3961 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3962 }
3963
3964 #if INCLUDE_CDS
3965 void jdk_internal_invoke_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
3966 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3967 }
3968 #endif
3969
3970 jint jdk_internal_invoke_NativeEntryPoint::shadow_space(oop entry) {
3971 return entry->int_field(_shadow_space_offset);
3972 }
3973
3974 oop jdk_internal_invoke_NativeEntryPoint::argMoves(oop entry) {
3975 return entry->obj_field(_argMoves_offset);
3976 }
3977
3978 oop jdk_internal_invoke_NativeEntryPoint::returnMoves(oop entry) {
3979 return entry->obj_field(_returnMoves_offset);
3980 }
3981
3982 jboolean jdk_internal_invoke_NativeEntryPoint::need_transition(oop entry) {
3983 return entry->bool_field(_need_transition_offset);
3984 }
3985
3986 oop jdk_internal_invoke_NativeEntryPoint::method_type(oop entry) {
3987 return entry->obj_field(_method_type_offset);
3988 }
3989
3990 oop jdk_internal_invoke_NativeEntryPoint::name(oop entry) {
3991 return entry->obj_field(_name_offset);
3992 }
3993
3994 oop java_lang_invoke_MethodHandle::type(oop mh) {
3995 return mh->obj_field(_type_offset);
3996 }
3997
3998 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3999 mh->obj_field_put(_type_offset, mtype);
4000 }
4001
4002 oop java_lang_invoke_MethodHandle::form(oop mh) {
4003 assert(_form_offset != 0, "");
4004 return mh->obj_field(_form_offset);
4005 }
4006
4007 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4008 assert(_form_offset != 0, "");
4009 mh->obj_field_put(_form_offset, lform);
4010 }
4011
4012 /// MemberName accessors
4013
4014 oop java_lang_invoke_MemberName::clazz(oop mname) {
4015 assert(is_instance(mname), "wrong type");
4016 return mname->obj_field(_clazz_offset);
4017 }
4018
4019 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
4020 assert(is_instance(mname), "wrong type");
4021 mname->obj_field_put(_clazz_offset, clazz);
4022 }
4023
4024 oop java_lang_invoke_MemberName::name(oop mname) {
4025 assert(is_instance(mname), "wrong type");
4026 return mname->obj_field(_name_offset);
4027 }
4028
4029 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
4030 assert(is_instance(mname), "wrong type");
4031 mname->obj_field_put(_name_offset, name);
4032 }
4033
4034 oop java_lang_invoke_MemberName::type(oop mname) {
4035 assert(is_instance(mname), "wrong type");
4036 return mname->obj_field(_type_offset);
4037 }
4038
4039 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4040 assert(is_instance(mname), "wrong type");
4041 mname->obj_field_put(_type_offset, type);
4042 }
4043
4044 int java_lang_invoke_MemberName::flags(oop mname) {
4045 assert(is_instance(mname), "wrong type");
4046 return mname->int_field(_flags_offset);
4047 }
4048
4049 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4050 assert(is_instance(mname), "wrong type");
4051 mname->int_field_put(_flags_offset, flags);
4052 }
4053
4054
4055 // Return vmtarget from ResolvedMethodName method field through indirection
4056 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4057 assert(is_instance(mname), "wrong type");
4058 oop method = mname->obj_field(_method_offset);
4059 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4060 }
4061
4062 bool java_lang_invoke_MemberName::is_method(oop mname) {
4063 assert(is_instance(mname), "must be MemberName");
4064 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4065 }
4066
4067 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4068 assert(is_instance(mname), "wrong type");
4069 mname->obj_field_put(_method_offset, resolved_method);
4070 }
4071
4072 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4073 assert(is_instance(mname), "wrong type");
4074 return (intptr_t) mname->address_field(_vmindex_offset);
4075 }
4076
4077 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4078 assert(is_instance(mname), "wrong type");
4079 mname->address_field_put(_vmindex_offset, (address) index);
4080 }
4081
4082
4083 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4084 assert(is_instance(resolved_method), "wrong type");
4085 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4086 assert(m->is_method(), "must be");
4087 return m;
4088 }
4089
4090 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4091 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4092 assert(is_instance(resolved_method), "wrong type");
4093 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4094 }
4095
4096 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4097 assert(is_instance(resolved_method), "wrong type");
4098 resolved_method->obj_field_put(_vmholder_offset, holder);
4099 }
4100
4101 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4102 const Method* method = m();
4103
4104 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4105 oop resolved_method = ResolvedMethodTable::find_method(method);
4106 if (resolved_method != NULL) {
4107 return resolved_method;
4108 }
4109
4110 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4111 if (!k->is_initialized()) {
4112 k->initialize(CHECK_NULL);
4113 }
4114
4115 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4116
4117 NoSafepointVerifier nsv;
4118
4119 if (method->is_old()) {
4120 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4121 method->get_new_method();
4122 }
4123
4124 InstanceKlass* holder = method->method_holder();
4125
4126 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4127 // Add a reference to the loader (actually mirror because hidden classes may not have
4128 // distinct loaders) to ensure the metadata is kept alive.
4129 // This mirror may be different than the one in clazz field.
4130 set_vmholder(new_resolved_method, holder->java_mirror());
4131
4132 // Set flag in class to indicate this InstanceKlass has entries in the table
4133 // to avoid walking table during redefinition if none of the redefined classes
4134 // have any membernames in the table.
4135 holder->set_has_resolved_methods();
4136
4137 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4138 }
4139
4140 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4141 assert(is_instance(lform), "wrong type");
4142 return lform->obj_field(_vmentry_offset);
4143 }
4144
4145
4146 // Support for java_lang_invoke_MethodType
4147
4148 int java_lang_invoke_MethodType::_rtype_offset;
4149 int java_lang_invoke_MethodType::_ptypes_offset;
4150
4151 #define METHODTYPE_FIELDS_DO(macro) \
4152 macro(_rtype_offset, k, "rtype", class_signature, false); \
4153 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4154
4155 void java_lang_invoke_MethodType::compute_offsets() {
4156 InstanceKlass* k = vmClasses::MethodType_klass();
4157 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4158 }
4159
4160 #if INCLUDE_CDS
4161 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4162 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4163 }
4164 #endif
4165
4166 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4167 st->print("(");
4168 objArrayOop pts = ptypes(mt);
4169 if (pts != NULL) {
4170 for (int i = 0, limit = pts->length(); i < limit; i++) {
4171 java_lang_Class::print_signature(pts->obj_at(i), st);
4172 }
4173 } else {
4174 st->print("NULL");
4175 }
4176 st->print(")");
4177 oop rt = rtype(mt);
4178 if (rt != NULL) {
4179 java_lang_Class::print_signature(rt, st);
4180 } else {
4181 st->print("NULL");
4182 }
4183 }
4184
4185 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4186 ResourceMark rm;
4187 stringStream buffer(128);
4188 print_signature(mt, &buffer);
4189 const char* sigstr = buffer.base();
4190 int siglen = (int) buffer.size();
4191 Symbol *name;
4192 if (!intern_if_not_found) {
4193 name = SymbolTable::probe(sigstr, siglen);
4194 } else {
4195 name = SymbolTable::new_symbol(sigstr, siglen);
4196 }
4197 return name;
4198 }
4199
4200 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4201 if (mt1 == mt2)
4202 return true;
4203 if (rtype(mt1) != rtype(mt2))
4204 return false;
4205 if (ptype_count(mt1) != ptype_count(mt2))
4206 return false;
4207 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4208 if (ptype(mt1, i) != ptype(mt2, i))
4209 return false;
4210 }
4211 return true;
4212 }
4213
4214 oop java_lang_invoke_MethodType::rtype(oop mt) {
4215 assert(is_instance(mt), "must be a MethodType");
4216 return mt->obj_field(_rtype_offset);
4217 }
4218
4219 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4220 assert(is_instance(mt), "must be a MethodType");
4221 return (objArrayOop) mt->obj_field(_ptypes_offset);
4222 }
4223
4224 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4225 return ptypes(mt)->obj_at(idx);
4226 }
4227
4228 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4229 return ptypes(mt)->length();
4230 }
4231
4232 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4233 objArrayOop pts = ptypes(mt);
4234 int count = pts->length();
4235 int slots = 0;
4236 for (int i = 0; i < count; i++) {
4237 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4238 slots += type2size[bt];
4239 }
4240 return slots;
4241 }
4242
4243 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4244 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4245 return type2size[bt];
4246 }
4247
4248
4249 // Support for java_lang_invoke_CallSite
4250
4251 int java_lang_invoke_CallSite::_target_offset;
4252 int java_lang_invoke_CallSite::_context_offset;
4253
4254 #define CALLSITE_FIELDS_DO(macro) \
4255 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4256 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4257
4258 void java_lang_invoke_CallSite::compute_offsets() {
4259 InstanceKlass* k = vmClasses::CallSite_klass();
4260 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4261 }
4262
4263 #if INCLUDE_CDS
4264 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4265 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4266 }
4267 #endif
4268
4269 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4270 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4271
4272 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4273 return dep_oop;
4274 }
4275
4276 // Support for java_lang_invoke_ConstantCallSite
4277
4278 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4279
4280 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4281 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4282
4283 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4284 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4285 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4286 }
4287
4288 #if INCLUDE_CDS
4289 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4290 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4291 }
4292 #endif
4293
4294 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4295
4296 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4297 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4298
4299 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4300 InstanceKlass* k = vmClasses::Context_klass();
4301 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4302 }
4303
4304 #if INCLUDE_CDS
4305 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4306 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4307 }
4308 #endif
4309
4310 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4311 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4312 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4313 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4314 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4315 return dep_ctx;
4316 }
4317
4318 // Support for java_security_AccessControlContext
4319
4320 int java_security_AccessControlContext::_context_offset;
4321 int java_security_AccessControlContext::_privilegedContext_offset;
4322 int java_security_AccessControlContext::_isPrivileged_offset;
4323 int java_security_AccessControlContext::_isAuthorized_offset;
4324
4325 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4326 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4327 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4328 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4329 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4330
4331 void java_security_AccessControlContext::compute_offsets() {
4332 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4333 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4334 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4335 }
4336
4337 #if INCLUDE_CDS
4338 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4339 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4340 }
4341 #endif
4342
4343 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4344 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4345 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4346 // Ensure klass is initialized
4347 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4348 // Allocate result
4349 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4350 // Fill in values
4351 result->obj_field_put(_context_offset, context());
4352 result->obj_field_put(_privilegedContext_offset, privileged_context());
4353 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4354 result->bool_field_put(_isAuthorized_offset, true);
4355 return result;
4356 }
4357
4358
4359 // Support for java_lang_ClassLoader
4360
4361 int java_lang_ClassLoader::_loader_data_offset;
4362 int java_lang_ClassLoader::_parallelCapable_offset;
4363 int java_lang_ClassLoader::_name_offset;
4364 int java_lang_ClassLoader::_nameAndId_offset;
4365 int java_lang_ClassLoader::_unnamedModule_offset;
4366 int java_lang_ClassLoader::_parent_offset;
4367
4368 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4369 assert(loader != NULL, "loader must not be NULL");
4370 assert(oopDesc::is_oop(loader), "loader must be oop");
4371 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4372 }
4373
4374 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4375 assert(loader != NULL, "loader must not be NULL");
4376 assert(oopDesc::is_oop(loader), "loader must be oop");
4377 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4378 }
4379
4380 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4381 assert(loader != NULL, "loader must not be NULL");
4382 assert(oopDesc::is_oop(loader), "loader must be oop");
4383 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4384 }
4385
4386 #define CLASSLOADER_FIELDS_DO(macro) \
4387 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4388 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4389 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4390 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4391 macro(_parent_offset, k1, "parent", classloader_signature, false)
4392
4393 void java_lang_ClassLoader::compute_offsets() {
4394 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4395 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4396
4397 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4398 }
4399
4400 #if INCLUDE_CDS
4401 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4402 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4403 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4404 }
4405 #endif
4406
4407 oop java_lang_ClassLoader::parent(oop loader) {
4408 assert(is_instance(loader), "loader must be oop");
4409 return loader->obj_field(_parent_offset);
4410 }
4411
4412 // Returns the name field of this class loader. If the name field has not
4413 // been set, null will be returned.
4414 oop java_lang_ClassLoader::name(oop loader) {
4415 assert(is_instance(loader), "loader must be oop");
4416 return loader->obj_field(_name_offset);
4417 }
4418
4419 // Returns the nameAndId field of this class loader. The format is
4420 // as follows:
4421 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4422 // If the defining loader has no name then <qualified-class-name> @<id>
4423 // If built-in loader, then omit '@<id>' as there is only one instance.
4424 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4425 oop java_lang_ClassLoader::nameAndId(oop loader) {
4426 assert(is_instance(loader), "loader must be oop");
4427 return loader->obj_field(_nameAndId_offset);
4428 }
4429
4430 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4431 assert(is_instance(loader), "loader must be oop");
4432 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4433 oop acl = loader;
4434 debug_only(jint loop_count = 0);
4435 // This loop taken verbatim from ClassLoader.java:
4436 do {
4437 acl = parent(acl);
4438 if (cl == acl) {
4439 return true;
4440 }
4441 assert(++loop_count > 0, "loop_count overflow");
4442 } while (acl != NULL);
4443 return false;
4444 }
4445
4446 bool java_lang_ClassLoader::is_instance(oop obj) {
4447 return obj != NULL && is_subclass(obj->klass());
4448 }
4449
4450
4451 // For class loader classes, parallelCapable defined
4452 // based on non-null field
4453 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4454 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4455 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4456 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4457 }
4458
4459 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4460 // Fix for 4474172; see evaluation for more details
4461 loader = non_reflection_class_loader(loader);
4462
4463 oop cl = SystemDictionary::java_system_loader();
4464 while(cl != NULL) {
4465 if (cl == loader) return true;
4466 cl = parent(cl);
4467 }
4468 return false;
4469 }
4470
4471 // Return true if this is one of the class loaders associated with
4472 // the generated bytecodes for reflection.
4473 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4474 if (loader != NULL) {
4475 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4476 // This might be null in non-1.4 JDKs
4477 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4478 }
4479 return false;
4480 }
4481
4482 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4483 // See whether this is one of the class loaders associated with
4484 // the generated bytecodes for reflection, and if so, "magically"
4485 // delegate to its parent to prevent class loading from occurring
4486 // in places where applications using reflection didn't expect it.
4487 if (is_reflection_class_loader(loader)) {
4488 return parent(loader);
4489 }
4490 return loader;
4491 }
4492
4493 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4494 assert(is_instance(loader), "loader must be oop");
4495 return loader->obj_field(_unnamedModule_offset);
4496 }
4497
4498 // Support for java_lang_System
4499 //
4500
4501 int java_lang_System::_static_in_offset;
4502 int java_lang_System::_static_out_offset;
4503 int java_lang_System::_static_err_offset;
4504 int java_lang_System::_static_security_offset;
4505 int java_lang_System::_static_allow_security_offset;
4506 int java_lang_System::_static_never_offset;
4507
4508 #define SYSTEM_FIELDS_DO(macro) \
4509 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4510 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4511 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4512 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4513 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4514 macro(_static_never_offset, k, "NEVER", int_signature, true)
4515
4516 void java_lang_System::compute_offsets() {
4517 InstanceKlass* k = vmClasses::System_klass();
4518 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4519 }
4520
4521 // This field tells us that a security manager can never be installed so we
4522 // can completely skip populating the ProtectionDomainCacheTable.
4523 bool java_lang_System::allow_security_manager() {
4524 static int initialized = false;
4525 static bool allowed = true; // default
4526 if (!initialized) {
4527 oop base = vmClasses::System_klass()->static_field_base_raw();
4528 int never = base->int_field(_static_never_offset);
4529 allowed = (base->int_field(_static_allow_security_offset) != never);
4530 initialized = true;
4531 }
4532 return allowed;
4533 }
4534
4535 // This field tells us that a security manager is installed.
4536 bool java_lang_System::has_security_manager() {
4537 oop base = vmClasses::System_klass()->static_field_base_raw();
4538 return base->obj_field(_static_security_offset) != NULL;
4539 }
4540
4541 #if INCLUDE_CDS
4542 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4543 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4544 }
4545 #endif
4546
4547 // Support for jdk_internal_misc_UnsafeConstants
4548 //
4549 class UnsafeConstantsFixup : public FieldClosure {
4550 private:
4551 int _address_size;
4552 int _page_size;
4553 bool _big_endian;
4554 bool _use_unaligned_access;
4555 int _data_cache_line_flush_size;
4556 public:
4557 UnsafeConstantsFixup() {
4558 // round up values for all static final fields
4559 _address_size = sizeof(void*);
4560 _page_size = os::vm_page_size();
4561 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4562 _use_unaligned_access = UseUnalignedAccesses;
4563 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4564 }
4565
4566 void do_field(fieldDescriptor* fd) {
4567 oop mirror = fd->field_holder()->java_mirror();
4568 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4569 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4570 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4571 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4572 if (fd->name() == vmSymbols::address_size_name()) {
4573 mirror->int_field_put(fd->offset(), _address_size);
4574 } else if (fd->name() == vmSymbols::page_size_name()) {
4575 mirror->int_field_put(fd->offset(), _page_size);
4576 } else if (fd->name() == vmSymbols::big_endian_name()) {
4577 mirror->bool_field_put(fd->offset(), _big_endian);
4578 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4579 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4580 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4581 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4582 } else {
4583 assert(false, "unexpected UnsafeConstants field");
4584 }
4585 }
4586 };
4587
4588 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4589 UnsafeConstantsFixup fixup;
4590 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4591 }
4592
4593
4594 // java_lang_StackTraceElement
4595
4596 int java_lang_StackTraceElement::_methodName_offset;
4597 int java_lang_StackTraceElement::_fileName_offset;
4598 int java_lang_StackTraceElement::_lineNumber_offset;
4599 int java_lang_StackTraceElement::_moduleName_offset;
4600 int java_lang_StackTraceElement::_moduleVersion_offset;
4601 int java_lang_StackTraceElement::_classLoaderName_offset;
4602 int java_lang_StackTraceElement::_declaringClass_offset;
4603 int java_lang_StackTraceElement::_declaringClassObject_offset;
4604
4605 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4606 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4607 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4608 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4609 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4610 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4611 macro(_methodName_offset, k, "methodName", string_signature, false); \
4612 macro(_fileName_offset, k, "fileName", string_signature, false); \
4613 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4614
4615 // Support for java_lang_StackTraceElement
4616 void java_lang_StackTraceElement::compute_offsets() {
4617 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4618 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4619 }
4620
4621 #if INCLUDE_CDS
4622 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4623 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4624 }
4625 #endif
4626
4627 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4628 element->obj_field_put(_fileName_offset, value);
4629 }
4630
4631 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4632 element->obj_field_put(_declaringClass_offset, value);
4633 }
4634
4635 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4636 element->obj_field_put(_methodName_offset, value);
4637 }
4638
4639 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4640 element->int_field_put(_lineNumber_offset, value);
4641 }
4642
4643 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4644 element->obj_field_put(_moduleName_offset, value);
4645 }
4646
4647 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4648 element->obj_field_put(_moduleVersion_offset, value);
4649 }
4650
4651 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4652 element->obj_field_put(_classLoaderName_offset, value);
4653 }
4654
4655 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4656 element->obj_field_put(_declaringClassObject_offset, value);
4657 }
4658
4659
4660 // java_lang_AssertionStatusDirectives
4661
4662 int java_lang_AssertionStatusDirectives::_classes_offset;
4663 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4664 int java_lang_AssertionStatusDirectives::_packages_offset;
4665 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4666 int java_lang_AssertionStatusDirectives::_deflt_offset;
4667
4668 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4669 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4670 macro(_classes_offset, k, "classes", string_array_signature, false); \
4671 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4672 macro(_packages_offset, k, "packages", string_array_signature, false); \
4673 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4674 macro(_deflt_offset, k, "deflt", bool_signature, false)
4675
4676 void java_lang_AssertionStatusDirectives::compute_offsets() {
4677 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4678 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4679 }
4680
4681 #if INCLUDE_CDS
4682 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4683 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4684 }
4685 #endif
4686
4687 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4688 o->obj_field_put(_classes_offset, val);
4689 }
4690
4691 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4692 o->obj_field_put(_classEnabled_offset, val);
4693 }
4694
4695 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4696 o->obj_field_put(_packages_offset, val);
4697 }
4698
4699 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4700 o->obj_field_put(_packageEnabled_offset, val);
4701 }
4702
4703 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4704 o->bool_field_put(_deflt_offset, val);
4705 }
4706
4707 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4708
4709 #define AOS_FIELDS_DO(macro) \
4710 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4711
4712 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4713 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4714 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4715 }
4716
4717 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4718 assert(_owner_offset != 0, "Must be initialized");
4719 return obj->obj_field(_owner_offset);
4720 }
4721
4722 #if INCLUDE_CDS
4723 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4724 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4725 }
4726 #endif
4727
4728 int vector_VectorPayload::_payload_offset;
4729
4730 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4731 macro(_payload_offset, k, "payload", object_signature, false)
4732
4733 void vector_VectorPayload::compute_offsets() {
4734 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
4735 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4736 }
4737
4738 #if INCLUDE_CDS
4739 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
4740 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4741 }
4742 #endif
4743
4744 void vector_VectorPayload::set_payload(oop o, oop val) {
4745 o->obj_field_put(_payload_offset, val);
4746 }
4747
4748 bool vector_VectorPayload::is_instance(oop obj) {
4749 return obj != NULL && is_subclass(obj->klass());
4750 }
4751
4752 int java_lang_Integer_IntegerCache::_static_cache_offset;
4753 int java_lang_Long_LongCache::_static_cache_offset;
4754 int java_lang_Character_CharacterCache::_static_cache_offset;
4755 int java_lang_Short_ShortCache::_static_cache_offset;
4756 int java_lang_Byte_ByteCache::_static_cache_offset;
4757
4758 #define INTEGER_CACHE_FIELDS_DO(macro) \
4759 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4760
4761 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4762 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4763 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4764 }
4765
4766 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4767 oop base = ik->static_field_base_raw();
4768 return objArrayOop(base->obj_field(_static_cache_offset));
4769 }
4770
4771 Symbol* java_lang_Integer_IntegerCache::symbol() {
4772 return vmSymbols::java_lang_Integer_IntegerCache();
4773 }
4774
4775 #if INCLUDE_CDS
4776 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4777 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4778 }
4779 #endif
4780 #undef INTEGER_CACHE_FIELDS_DO
4781
4782 jint java_lang_Integer::value(oop obj) {
4783 jvalue v;
4784 java_lang_boxing_object::get_value(obj, &v);
4785 return v.i;
4786 }
4787
4788 #define LONG_CACHE_FIELDS_DO(macro) \
4789 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4790
4791 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4792 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4793 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4794 }
4795
4796 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4797 oop base = ik->static_field_base_raw();
4798 return objArrayOop(base->obj_field(_static_cache_offset));
4799 }
4800
4801 Symbol* java_lang_Long_LongCache::symbol() {
4802 return vmSymbols::java_lang_Long_LongCache();
4803 }
4804
4805 #if INCLUDE_CDS
4806 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4807 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4808 }
4809 #endif
4810 #undef LONG_CACHE_FIELDS_DO
4811
4812 jlong java_lang_Long::value(oop obj) {
4813 jvalue v;
4814 java_lang_boxing_object::get_value(obj, &v);
4815 return v.j;
4816 }
4817
4818 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4819 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4820
4821 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4822 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4823 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4824 }
4825
4826 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4827 oop base = ik->static_field_base_raw();
4828 return objArrayOop(base->obj_field(_static_cache_offset));
4829 }
4830
4831 Symbol* java_lang_Character_CharacterCache::symbol() {
4832 return vmSymbols::java_lang_Character_CharacterCache();
4833 }
4834
4835 #if INCLUDE_CDS
4836 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4837 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4838 }
4839 #endif
4840 #undef CHARACTER_CACHE_FIELDS_DO
4841
4842 jchar java_lang_Character::value(oop obj) {
4843 jvalue v;
4844 java_lang_boxing_object::get_value(obj, &v);
4845 return v.c;
4846 }
4847
4848 #define SHORT_CACHE_FIELDS_DO(macro) \
4849 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4850
4851 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4852 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4853 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4854 }
4855
4856 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4857 oop base = ik->static_field_base_raw();
4858 return objArrayOop(base->obj_field(_static_cache_offset));
4859 }
4860
4861 Symbol* java_lang_Short_ShortCache::symbol() {
4862 return vmSymbols::java_lang_Short_ShortCache();
4863 }
4864
4865 #if INCLUDE_CDS
4866 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4867 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4868 }
4869 #endif
4870 #undef SHORT_CACHE_FIELDS_DO
4871
4872 jshort java_lang_Short::value(oop obj) {
4873 jvalue v;
4874 java_lang_boxing_object::get_value(obj, &v);
4875 return v.s;
4876 }
4877
4878 #define BYTE_CACHE_FIELDS_DO(macro) \
4879 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4880
4881 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4882 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4883 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4884 }
4885
4886 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4887 oop base = ik->static_field_base_raw();
4888 return objArrayOop(base->obj_field(_static_cache_offset));
4889 }
4890
4891 Symbol* java_lang_Byte_ByteCache::symbol() {
4892 return vmSymbols::java_lang_Byte_ByteCache();
4893 }
4894
4895 #if INCLUDE_CDS
4896 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4897 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4898 }
4899 #endif
4900 #undef BYTE_CACHE_FIELDS_DO
4901
4902 jbyte java_lang_Byte::value(oop obj) {
4903 jvalue v;
4904 java_lang_boxing_object::get_value(obj, &v);
4905 return v.b;
4906 }
4907
4908 int java_lang_Boolean::_static_TRUE_offset;
4909 int java_lang_Boolean::_static_FALSE_offset;
4910
4911 #define BOOLEAN_FIELDS_DO(macro) \
4912 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4913 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4914
4915
4916 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4917 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4918 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4919 }
4920
4921 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4922 oop base = ik->static_field_base_raw();
4923 return base->obj_field(_static_TRUE_offset);
4924 }
4925
4926 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4927 oop base = ik->static_field_base_raw();
4928 return base->obj_field(_static_FALSE_offset);
4929 }
4930
4931 Symbol* java_lang_Boolean::symbol() {
4932 return vmSymbols::java_lang_Boolean();
4933 }
4934
4935 #if INCLUDE_CDS
4936 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4937 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4938 }
4939 #endif
4940 #undef BOOLEAN_CACHE_FIELDS_DO
4941
4942 jboolean java_lang_Boolean::value(oop obj) {
4943 jvalue v;
4944 java_lang_boxing_object::get_value(obj, &v);
4945 return v.z;
4946 }
4947
4948 // java_lang_reflect_RecordComponent
4949
4950 int java_lang_reflect_RecordComponent::_clazz_offset;
4951 int java_lang_reflect_RecordComponent::_name_offset;
4952 int java_lang_reflect_RecordComponent::_type_offset;
4953 int java_lang_reflect_RecordComponent::_accessor_offset;
4954 int java_lang_reflect_RecordComponent::_signature_offset;
4955 int java_lang_reflect_RecordComponent::_annotations_offset;
4956 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4957
4958 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4959 macro(_clazz_offset, k, "clazz", class_signature, false); \
4960 macro(_name_offset, k, "name", string_signature, false); \
4961 macro(_type_offset, k, "type", class_signature, false); \
4962 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4963 macro(_signature_offset, k, "signature", string_signature, false); \
4964 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4965 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4966
4967 // Support for java_lang_reflect_RecordComponent
4968 void java_lang_reflect_RecordComponent::compute_offsets() {
4969 InstanceKlass* k = vmClasses::RecordComponent_klass();
4970 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4971 }
4972
4973 #if INCLUDE_CDS
4974 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4975 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4976 }
4977 #endif
4978
4979 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4980 element->obj_field_put(_clazz_offset, value);
4981 }
4982
4983 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4984 element->obj_field_put(_name_offset, value);
4985 }
4986
4987 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4988 element->obj_field_put(_type_offset, value);
4989 }
4990
4991 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4992 element->obj_field_put(_accessor_offset, value);
4993 }
4994
4995 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4996 element->obj_field_put(_signature_offset, value);
4997 }
4998
4999 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
5000 element->obj_field_put(_annotations_offset, value);
5001 }
5002
5003 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
5004 element->obj_field_put(_typeAnnotations_offset, value);
5005 }
5006
5007 // java_lang_InternalError
5008 int java_lang_InternalError::_during_unsafe_access_offset;
5009
5010 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
5011 internal_error->bool_field_put(_during_unsafe_access_offset, true);
5012 }
5013
5014 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
5015 return internal_error->bool_field(_during_unsafe_access_offset);
5016 }
5017
5018 void java_lang_InternalError::compute_offsets() {
5019 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
5020 }
5021
5022 #if INCLUDE_CDS
5023 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
5024 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
5025 }
5026 #endif
5027
5028 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
5029
5030 // Compute field offsets of all the classes in this file
5031 void JavaClasses::compute_offsets() {
5032 if (UseSharedSpaces) {
5033 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
5034 JvmtiExport::has_early_class_hook_env()),
5035 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
5036 // None of the classes used by the rest of this function can be replaced by
5037 // JVMTI ClassFileLoadHook.
5038 // We are safe to use the archived offsets, which have already been restored
5039 // by JavaClasses::serialize_offsets, without computing the offsets again.
5040 return;
5041 }
5042
5043 // We have already called the compute_offsets() of the
5044 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
5045 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
5046 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
5047 }
5048
5049 #if INCLUDE_CDS
5050 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
5051
5052 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
5053 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
5054 }
5055 #endif
5056
5057 #if INCLUDE_CDS_JAVA_HEAP
5058 bool JavaClasses::is_supported_for_archiving(oop obj) {
5059 Klass* klass = obj->klass();
5060
5061 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
5062 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
5063 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
5064 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
5065 // So for now we cannot not support these classes for archiving.
5066 //
5067 // These objects typically are not referenced by static fields, but rather by resolved
5068 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
5069 klass == vmClasses::ResolvedMethodName_klass() ||
5070 klass == vmClasses::MemberName_klass() ||
5071 klass == vmClasses::Context_klass()) {
5072 return false;
5073 }
5074
5075 return true;
5076 }
5077 #endif
5078
5079 #ifndef PRODUCT
5080
5081 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5082
5083 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5084 const char* field_sig) {
5085 EXCEPTION_MARK;
5086 fieldDescriptor fd;
5087 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5088 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5089 InstanceKlass* ik = InstanceKlass::cast(k);
5090 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5091 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5092 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5093 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5094 return false;
5095 }
5096 if (fd.is_static()) {
5097 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5098 return false;
5099 }
5100 if (fd.offset() == deserialized_offset ) {
5101 return true;
5102 } else {
5103 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5104 klass_name, field_name, deserialized_offset, fd.offset());
5105 return false;
5106 }
5107 }
5108
5109 void JavaClasses::check_offsets() {
5110 bool valid = true;
5111
5112 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5113 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5114
5115 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5116 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5117
5118 // Boxed primitive objects (java_lang_boxing_object)
5119
5120 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5121 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5122 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5123 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5124 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5125 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5126 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5127 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5128
5129 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5130 }
5131
5132 #endif // PRODUCT
5133
5134 int InjectedField::compute_offset() {
5135 InstanceKlass* ik = InstanceKlass::cast(klass());
5136 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5137 if (!may_be_java && !fs.access_flags().is_internal()) {
5138 // Only look at injected fields
5139 continue;
5140 }
5141 if (fs.name() == name() && fs.signature() == signature()) {
5142 return fs.offset();
5143 }
5144 }
5145 ResourceMark rm;
5146 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)" : "");
5147 #ifndef PRODUCT
5148 ik->print();
5149 tty->print_cr("all fields:");
5150 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5151 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5152 }
5153 #endif //PRODUCT
5154 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5155 return -1;
5156 }
5157
5158 void javaClasses_init() {
5159 JavaClasses::compute_offsets();
5160 JavaClasses::check_offsets();
5161 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5162 }