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/instanceKlass.inline.hpp"
53 #include "oops/instanceMirrorKlass.hpp"
54 #include "oops/klass.hpp"
55 #include "oops/klass.inline.hpp"
56 #include "oops/method.inline.hpp"
57 #include "oops/objArrayOop.inline.hpp"
58 #include "oops/oop.inline.hpp"
59 #include "oops/symbol.hpp"
60 #include "oops/recordComponent.hpp"
61 #include "oops/typeArrayOop.inline.hpp"
62 #include "prims/jvmtiExport.hpp"
63 #include "prims/methodHandles.hpp"
64 #include "prims/resolvedMethodTable.hpp"
65 #include "runtime/fieldDescriptor.inline.hpp"
66 #include "runtime/frame.inline.hpp"
67 #include "runtime/handles.inline.hpp"
68 #include "runtime/init.hpp"
69 #include "runtime/interfaceSupport.inline.hpp"
70 #include "runtime/java.hpp"
71 #include "runtime/javaCalls.hpp"
72 #include "runtime/jniHandles.inline.hpp"
73 #include "runtime/reflectionUtils.hpp"
74 #include "runtime/safepoint.hpp"
75 #include "runtime/safepointVerifiers.hpp"
76 #include "runtime/thread.inline.hpp"
77 #include "runtime/vframe.inline.hpp"
78 #include "runtime/vm_version.hpp"
79 #include "utilities/align.hpp"
80 #include "utilities/preserveException.hpp"
81 #include "utilities/utf8.hpp"
82 #if INCLUDE_JVMCI
83 #include "jvmci/jvmciJavaClasses.hpp"
84 #endif
85
86 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
87 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
88
89 #if INCLUDE_CDS
90 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
91 f->do_u4((u4*)&_##name##_offset);
92 #endif
93
94 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
95 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java },
96
97 InjectedField JavaClasses::_injected_fields[] = {
98 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
99 };
100
101 // Register native methods of Object
102 void java_lang_Object::register_natives(TRAPS) {
103 InstanceKlass* obj = vmClasses::Object_klass();
104 Method::register_native(obj, vmSymbols::hashCode_name(),
105 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
106 Method::register_native(obj, vmSymbols::wait_name(),
107 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
108 Method::register_native(obj, vmSymbols::notify_name(),
109 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
110 Method::register_native(obj, vmSymbols::notifyAll_name(),
111 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
112 Method::register_native(obj, vmSymbols::clone_name(),
113 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
114 }
115
116 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
117 return _injected_fields[id].compute_offset();
118 }
119
120 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
121 *field_count = 0;
122
123 vmSymbolID sid = vmSymbols::find_sid(class_name);
124 if (sid == vmSymbolID::NO_SID) {
125 // Only well known classes can inject fields
126 return NULL;
127 }
128
129 int count = 0;
130 int start = -1;
131
132 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
133 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \
134 count++; \
135 if (start == -1) start = klass##_##name##_enum; \
136 }
137 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
138 #undef LOOKUP_INJECTED_FIELD
139
140 if (start != -1) {
141 *field_count = count;
142 return _injected_fields + start;
143 }
144 return NULL;
145 }
146
147
148 // Helpful routine for computing field offsets at run time rather than hardcoding them
149 // Finds local fields only, including static fields. Static field offsets are from the
150 // beginning of the mirror.
151 static void compute_offset(int &dest_offset,
152 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
153 bool is_static = false) {
154 fieldDescriptor fd;
155 if (ik == NULL) {
156 ResourceMark rm;
157 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
158 vm_exit_during_initialization("Invalid layout of well-known class");
159 }
160
161 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
162 ResourceMark rm;
163 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
164 name_symbol->as_C_string(), signature_symbol->as_C_string());
165 #ifndef PRODUCT
166 // Prints all fields and offsets
167 Log(class) lt;
168 LogStream ls(lt.error());
169 ik->print_on(&ls);
170 #endif //PRODUCT
171 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
172 }
173 dest_offset = fd.offset();
174 }
175
176 // Overloading to pass name as a string.
177 static void compute_offset(int& dest_offset, InstanceKlass* ik,
178 const char* name_string, Symbol* signature_symbol,
179 bool is_static = false) {
180 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
181 if (name == NULL) {
182 ResourceMark rm;
183 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
184 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
185 }
186 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
187 }
188
189
190 #if INCLUDE_CDS
191 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
192 f->do_u4((u4*)&offset)
193 #endif
194
195 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
196 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
197
198
199 // java_lang_String
200
201 int java_lang_String::_value_offset;
202 int java_lang_String::_hash_offset;
203 int java_lang_String::_hashIsZero_offset;
204 int java_lang_String::_coder_offset;
205 int java_lang_String::_flags_offset;
206
207 bool java_lang_String::_initialized;
208
209
210 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) {
211 uint8_t* addr = flags_addr(java_string);
212 uint8_t value = Atomic::load(addr);
213 while ((value & flag_mask) == 0) {
214 uint8_t old_value = value;
215 value |= flag_mask;
216 value = Atomic::cmpxchg(addr, old_value, value);
217 if (value == old_value) return false; // Flag bit changed from 0 to 1.
218 }
219 return true; // Flag bit is already 1.
220 }
221
222 #define STRING_FIELDS_DO(macro) \
223 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
224 macro(_hash_offset, k, "hash", int_signature, false); \
225 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
226 macro(_coder_offset, k, "coder", byte_signature, false);
227
228 void java_lang_String::compute_offsets() {
229 if (_initialized) {
230 return;
231 }
232
233 InstanceKlass* k = vmClasses::String_klass();
234 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
235 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
236
237 _initialized = true;
238 }
239
240 #if INCLUDE_CDS
241 void java_lang_String::serialize_offsets(SerializeClosure* f) {
242 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
243 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
244 f->do_bool(&_initialized);
245 }
246 #endif
247
248 class CompactStringsFixup : public FieldClosure {
249 private:
250 bool _value;
251
252 public:
253 CompactStringsFixup(bool value) : _value(value) {}
254
255 void do_field(fieldDescriptor* fd) {
256 if (fd->name() == vmSymbols::compact_strings_name()) {
257 oop mirror = fd->field_holder()->java_mirror();
258 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String");
259 assert(mirror != NULL, "String must have mirror already");
260 mirror->bool_field_put(fd->offset(), _value);
261 }
262 }
263 };
264
265 void java_lang_String::set_compact_strings(bool value) {
266 CompactStringsFixup fix(value);
267 vmClasses::String_klass()->do_local_static_fields(&fix);
268 }
269
270 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
271 assert(_initialized, "Must be initialized");
272 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
273
274 // Create the String object first, so there's a chance that the String
275 // and the char array it points to end up in the same cache line.
276 oop obj;
277 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH);
278
279 // Create the char array. The String object must be handlized here
280 // because GC can happen as a result of the allocation attempt.
281 Handle h_obj(THREAD, obj);
282 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
283 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
284
285 // Point the String at the char array
286 obj = h_obj();
287 set_value(obj, buffer);
288 // No need to zero the offset, allocation zero'ed the entire String object
289 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
290 return h_obj;
291 }
292
293 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
294 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
295 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
296 typeArrayOop buffer = value(h_obj());
297 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
298 if (is_latin1) {
299 for (int index = 0; index < length; index++) {
300 buffer->byte_at_put(index, (jbyte)unicode[index]);
301 }
302 } else {
303 for (int index = 0; index < length; index++) {
304 buffer->char_at_put(index, unicode[index]);
305 }
306 }
307
308 #ifdef ASSERT
309 {
310 ResourceMark rm;
311 char* expected = UNICODE::as_utf8(unicode, length);
312 char* actual = as_utf8_string(h_obj());
313 if (strcmp(expected, actual) != 0) {
314 fatal("Unicode conversion failure: %s --> %s", expected, actual);
315 }
316 }
317 #endif
318
319 return h_obj;
320 }
321
322 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
323 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
324 return h_obj();
325 }
326
327 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
328 if (utf8_str == NULL) {
329 return Handle();
330 }
331 bool has_multibyte, is_latin1;
332 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
333 if (!CompactStrings) {
334 has_multibyte = true;
335 is_latin1 = false;
336 }
337
338 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
339 if (length > 0) {
340 if (!has_multibyte) {
341 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
342 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
343 } else if (is_latin1) {
344 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
345 } else {
346 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
347 }
348 }
349
350 #ifdef ASSERT
351 // This check is too strict when the input string is not a valid UTF8.
352 // For example, it may be created with arbitrary content via jni_NewStringUTF.
353 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
354 ResourceMark rm;
355 const char* expected = utf8_str;
356 char* actual = as_utf8_string(h_obj());
357 if (strcmp(expected, actual) != 0) {
358 fatal("String conversion failure: %s --> %s", expected, actual);
359 }
360 }
361 #endif
362
363 return h_obj;
364 }
365
366 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
367 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
368 return h_obj();
369 }
370
371 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
372 const char* utf8_str = (char*)symbol->bytes();
373 int utf8_len = symbol->utf8_length();
374
375 bool has_multibyte, is_latin1;
376 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
377 if (!CompactStrings) {
378 has_multibyte = true;
379 is_latin1 = false;
380 }
381
382 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
383 if (length > 0) {
384 if (!has_multibyte) {
385 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
386 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
387 } else if (is_latin1) {
388 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
389 } else {
390 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
391 }
392 }
393
394 #ifdef ASSERT
395 {
396 ResourceMark rm;
397 const char* expected = symbol->as_utf8();
398 char* actual = as_utf8_string(h_obj());
399 if (strncmp(expected, actual, utf8_len) != 0) {
400 fatal("Symbol conversion failure: %s --> %s", expected, actual);
401 }
402 }
403 #endif
404
405 return h_obj;
406 }
407
408 // Converts a C string to a Java String based on current encoding
409 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
410 assert(str != NULL, "bad arguments");
411
412 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
413 static to_java_string_fn_t _to_java_string_fn = NULL;
414
415 if (_to_java_string_fn == NULL) {
416 void *lib_handle = os::native_java_library();
417 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
418 #if defined(_WIN32) && !defined(_WIN64)
419 if (_to_java_string_fn == NULL) {
420 // On 32 bit Windows, also try __stdcall decorated name
421 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
422 }
423 #endif
424 if (_to_java_string_fn == NULL) {
425 fatal("JNU_NewStringPlatform missing");
426 }
427 }
428
429 jstring js = NULL;
430 {
431 JavaThread* thread = THREAD;
432 HandleMark hm(thread);
433 ThreadToNativeFromVM ttn(thread);
434 js = (_to_java_string_fn)(thread->jni_environment(), str);
435 }
436
437 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
438 JNIHandles::destroy_local(js); // destroy local JNIHandle.
439 return native_platform_string;
440 }
441
442 // Converts a Java String to a native C string that can be used for
443 // native OS calls.
444 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
445 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
446 static to_platform_string_fn_t _to_platform_string_fn = NULL;
447
448 if (_to_platform_string_fn == NULL) {
449 void *lib_handle = os::native_java_library();
450 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
451 if (_to_platform_string_fn == NULL) {
452 fatal("GetStringPlatformChars missing");
453 }
454 }
455
456 char *native_platform_string;
457 JavaThread* thread = THREAD;
458 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
459 {
460 HandleMark hm(thread);
461 ThreadToNativeFromVM ttn(thread);
462 JNIEnv *env = thread->jni_environment();
463 bool is_copy;
464 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
465 assert(is_copy == JNI_TRUE, "is_copy value changed");
466 }
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::_init_lock_offset;
789 int java_lang_Class::_signers_offset;
790 int java_lang_Class::_name_offset;
791 int java_lang_Class::_source_file_offset;
792 int java_lang_Class::_classData_offset;
793 int java_lang_Class::_classRedefinedCount_offset;
794
795 bool java_lang_Class::_offsets_computed = false;
796 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
797 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
798
799 #ifdef ASSERT
800 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
801 assert(fd->has_initial_value(), "caller should have checked this");
802 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
803 // Can't use vmSymbols::string_signature() as fd->signature() may have been relocated
804 // during DumpSharedSpaces
805 assert(fd->signature()->equals("Ljava/lang/String;"), "just checking");
806 }
807 #endif
808
809 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
810 DEBUG_ONLY(assert_valid_static_string_field(fd);)
811 oop string = fd->string_initial_value(CHECK);
812 mirror()->obj_field_put(fd->offset(), string);
813 }
814
815 #if INCLUDE_CDS_JAVA_HEAP
816 static void initialize_static_string_field_for_dump(fieldDescriptor* fd, Handle mirror) {
817 DEBUG_ONLY(assert_valid_static_string_field(fd);)
818 assert(DumpSharedSpaces, "must be");
819 assert(HeapShared::is_archived_object_during_dumptime(mirror()), "must be");
820 // Archive the String field and update the pointer.
821 oop s = mirror()->obj_field(fd->offset());
822 oop archived_s = StringTable::create_archived_string(s);
823 mirror()->obj_field_put(fd->offset(), archived_s);
824 }
825 #endif
826
827 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) {
828 assert(fd->has_initial_value(), "caller should have checked this");
829 BasicType t = fd->field_type();
830 switch (t) {
831 case T_BYTE:
832 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
833 break;
834 case T_BOOLEAN:
835 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
836 break;
837 case T_CHAR:
838 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
839 break;
840 case T_SHORT:
841 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
842 break;
843 case T_INT:
844 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
845 break;
846 case T_FLOAT:
847 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
848 break;
849 case T_DOUBLE:
850 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
851 break;
852 case T_LONG:
853 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
854 break;
855 default:
856 // Illegal ConstantValue attribute in class file should have been
857 // caught during classfile parsing.
858 ShouldNotReachHere();
859 }
860 }
861
862 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
863 assert(mirror.not_null() && fd->is_static(), "just checking");
864 if (fd->has_initial_value()) {
865 if (fd->field_type() != T_OBJECT) {
866 initialize_static_primitive_field(fd, mirror);
867 } else {
868 initialize_static_string_field(fd, mirror, CHECK);
869 }
870 }
871 }
872
873 #if INCLUDE_CDS_JAVA_HEAP
874 static void initialize_static_field_for_dump(fieldDescriptor* fd, Handle mirror) {
875 assert(mirror.not_null() && fd->is_static(), "just checking");
876 if (fd->has_initial_value()) {
877 if (fd->field_type() != T_OBJECT) {
878 initialize_static_primitive_field(fd, mirror);
879 } else {
880 initialize_static_string_field_for_dump(fd, mirror);
881 }
882 }
883 }
884 #endif
885
886 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
887 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
888
889 // If the offset was read from the shared archive, it was fixed up already
890 if (!k->is_shared()) {
891 if (k->is_instance_klass()) {
892 // During bootstrap, java.lang.Class wasn't loaded so static field
893 // offsets were computed without the size added it. Go back and
894 // update all the static field offsets to included the size.
895 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
896 if (fs.access_flags().is_static()) {
897 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
898 fs.set_offset(real_offset);
899 }
900 }
901 }
902 }
903
904 if (k->is_shared() && k->has_archived_mirror_index()) {
905 if (HeapShared::are_archived_mirrors_available()) {
906 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
907 assert(present, "Missing archived mirror for %s", k->external_name());
908 return;
909 } else {
910 k->clear_java_mirror_handle();
911 k->clear_archived_mirror_index();
912 }
913 }
914 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
915 }
916
917 void java_lang_Class::initialize_mirror_fields(Klass* k,
918 Handle mirror,
919 Handle protection_domain,
920 Handle classData,
921 TRAPS) {
922 // Allocate a simple java object for a lock.
923 // This needs to be a java object because during class initialization
924 // it can be held across a java call.
925 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
926 set_init_lock(mirror(), r);
927
928 // Set protection domain also
929 set_protection_domain(mirror(), protection_domain());
930
931 // Initialize static fields
932 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
933
934 // Set classData
935 set_class_data(mirror(), classData());
936 }
937
938 // Set the java.lang.Module module field in the java_lang_Class mirror
939 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) {
940 if (module.is_null()) {
941 // During startup, the module may be NULL only if java.base has not been defined yet.
942 // Put the class on the fixup_module_list to patch later when the java.lang.Module
943 // for java.base is known. But note that since we captured the NULL module another
944 // thread may have completed that initialization.
945
946 bool javabase_was_defined = false;
947 {
948 MutexLocker m1(current, Module_lock);
949 // Keep list of classes needing java.base module fixup
950 if (!ModuleEntryTable::javabase_defined()) {
951 assert(k->java_mirror() != NULL, "Class's mirror is null");
952 k->class_loader_data()->inc_keep_alive();
953 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
954 fixup_module_field_list()->push(k);
955 } else {
956 javabase_was_defined = true;
957 }
958 }
959
960 // If java.base was already defined then patch this particular class with java.base.
961 if (javabase_was_defined) {
962 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
963 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
964 "Setting class module field, " JAVA_BASE_NAME " should be defined");
965 Handle javabase_handle(current, javabase_entry->module());
966 set_module(mirror(), javabase_handle());
967 }
968 } else {
969 assert(Universe::is_module_initialized() ||
970 (ModuleEntryTable::javabase_defined() &&
971 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
972 "Incorrect java.lang.Module specification while creating mirror");
973 set_module(mirror(), module());
974 }
975 }
976
977 // Statically allocate fixup lists because they always get created.
978 void java_lang_Class::allocate_fixup_lists() {
979 GrowableArray<Klass*>* mirror_list =
980 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
981 set_fixup_mirror_list(mirror_list);
982
983 GrowableArray<Klass*>* module_list =
984 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
985 set_fixup_module_field_list(module_list);
986 }
987
988 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
989 Handle module, Handle protection_domain,
990 Handle classData, TRAPS) {
991 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
992 assert(k->java_mirror() == NULL, "should only assign mirror once");
993
994 // Use this moment of initialization to cache modifier_flags also,
995 // to support Class.getModifiers(). Instance classes recalculate
996 // the cached flags after the class file is parsed, but before the
997 // class is put into the system dictionary.
998 int computed_modifiers = k->compute_modifier_flags();
999 k->set_modifier_flags(computed_modifiers);
1000 // Class_klass has to be loaded because it is used to allocate
1001 // the mirror.
1002 if (vmClasses::Class_klass_loaded()) {
1003 // Allocate mirror (java.lang.Class instance)
1004 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1005 Handle mirror(THREAD, mirror_oop);
1006 Handle comp_mirror;
1007
1008 // Setup indirection from mirror->klass
1009 set_klass(mirror(), k);
1010
1011 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1012 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1013
1014 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1015
1016 // It might also have a component mirror. This mirror must already exist.
1017 if (k->is_array_klass()) {
1018 if (k->is_typeArray_klass()) {
1019 BasicType type = TypeArrayKlass::cast(k)->element_type();
1020 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1021 } else {
1022 assert(k->is_objArray_klass(), "Must be");
1023 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1024 assert(element_klass != NULL, "Must have an element klass");
1025 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1026 }
1027 assert(comp_mirror() != NULL, "must have a mirror");
1028
1029 // Two-way link between the array klass and its component mirror:
1030 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1031 set_component_mirror(mirror(), comp_mirror());
1032 // See below for ordering dependencies between field array_klass in component mirror
1033 // and java_mirror in this klass.
1034 } else {
1035 assert(k->is_instance_klass(), "Must be");
1036
1037 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1038 if (HAS_PENDING_EXCEPTION) {
1039 // If any of the fields throws an exception like OOM remove the klass field
1040 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1041 // This mirror looks like a primitive type, which logically it is because it
1042 // it represents no class.
1043 set_klass(mirror(), NULL);
1044 return;
1045 }
1046 }
1047
1048 // set the classLoader field in the java_lang_Class instance
1049 assert(class_loader() == k->class_loader(), "should be same");
1050 set_class_loader(mirror(), class_loader());
1051
1052 // Setup indirection from klass->mirror
1053 // after any exceptions can happen during allocations.
1054 k->set_java_mirror(mirror);
1055
1056 // Set the module field in the java_lang_Class instance. This must be done
1057 // after the mirror is set.
1058 set_mirror_module_field(THREAD, k, mirror, module);
1059
1060 if (comp_mirror() != NULL) {
1061 // Set after k->java_mirror() is published, because compiled code running
1062 // concurrently doesn't expect a k to have a null java_mirror.
1063 release_set_array_klass(comp_mirror(), k);
1064 }
1065 } else {
1066 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1067 fixup_mirror_list()->push(k);
1068 }
1069 }
1070
1071 #if INCLUDE_CDS_JAVA_HEAP
1072 // Clears mirror fields. Static final fields with initial values are reloaded
1073 // from constant pool. The object identity hash is in the object header and is
1074 // not affected.
1075 class ResetMirrorField: public FieldClosure {
1076 private:
1077 Handle _m;
1078
1079 public:
1080 ResetMirrorField(Handle mirror) : _m(mirror) {}
1081
1082 void do_field(fieldDescriptor* fd) {
1083 assert(DumpSharedSpaces, "dump time only");
1084 assert(_m.not_null(), "Mirror cannot be NULL");
1085
1086 if (fd->is_static() && fd->has_initial_value()) {
1087 initialize_static_field_for_dump(fd, _m);
1088 return;
1089 }
1090
1091 BasicType ft = fd->field_type();
1092 switch (ft) {
1093 case T_BYTE:
1094 _m()->byte_field_put(fd->offset(), 0);
1095 break;
1096 case T_CHAR:
1097 _m()->char_field_put(fd->offset(), 0);
1098 break;
1099 case T_DOUBLE:
1100 _m()->double_field_put(fd->offset(), 0);
1101 break;
1102 case T_FLOAT:
1103 _m()->float_field_put(fd->offset(), 0);
1104 break;
1105 case T_INT:
1106 _m()->int_field_put(fd->offset(), 0);
1107 break;
1108 case T_LONG:
1109 _m()->long_field_put(fd->offset(), 0);
1110 break;
1111 case T_SHORT:
1112 _m()->short_field_put(fd->offset(), 0);
1113 break;
1114 case T_BOOLEAN:
1115 _m()->bool_field_put(fd->offset(), false);
1116 break;
1117 case T_ARRAY:
1118 case T_OBJECT: {
1119 // It might be useful to cache the String field, but
1120 // for now just clear out any reference field
1121 oop o = _m()->obj_field(fd->offset());
1122 _m()->obj_field_put(fd->offset(), NULL);
1123 break;
1124 }
1125 default:
1126 ShouldNotReachHere();
1127 break;
1128 }
1129 }
1130 };
1131
1132 static void set_klass_field_in_archived_mirror(oop mirror_obj, int offset, Klass* k) {
1133 assert(java_lang_Class::is_instance(mirror_obj), "must be");
1134 // this is the copy of k in the output buffer
1135 Klass* copy = ArchiveBuilder::get_relocated_klass(k);
1136
1137 // This is the address of k, if the archive is loaded at the requested location
1138 Klass* def = ArchiveBuilder::current()->to_requested(copy);
1139
1140 log_debug(cds, heap, mirror)(
1141 "Relocate mirror metadata field at %d from " PTR_FORMAT " ==> " PTR_FORMAT,
1142 offset, p2i(k), p2i(def));
1143
1144 mirror_obj->metadata_field_put(offset, def);
1145 }
1146
1147 void java_lang_Class::archive_basic_type_mirrors() {
1148 assert(HeapShared::can_write(), "must be");
1149
1150 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1151 BasicType bt = (BasicType)t;
1152 oop m = Universe::_mirrors[t].resolve();
1153 if (m != NULL) {
1154 // Update the field at _array_klass_offset to point to the relocated array klass.
1155 oop archived_m = HeapShared::archive_object(m);
1156 assert(archived_m != NULL, "sanity");
1157 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1158 assert(ak != NULL || t == T_VOID, "should not be NULL");
1159 if (ak != NULL) {
1160 set_klass_field_in_archived_mirror(archived_m, _array_klass_offset, ak);
1161 }
1162
1163 // Clear the fields. Just to be safe
1164 Klass *k = m->klass();
1165 Handle archived_mirror_h(Thread::current(), archived_m);
1166 ResetMirrorField reset(archived_mirror_h);
1167 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1168
1169 log_trace(cds, heap, mirror)(
1170 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1171 type2name(bt), p2i(m), p2i(archived_m));
1172
1173 Universe::replace_mirror(bt, archived_m);
1174 }
1175 }
1176 }
1177 //
1178 // After the mirror object is successfully archived, the archived
1179 // klass is set with _has_archived_raw_mirror flag.
1180 //
1181 // The _has_archived_raw_mirror flag is cleared at runtime when the
1182 // archived mirror is restored. If archived java heap data cannot
1183 // be used at runtime, new mirror object is created for the shared
1184 // class. The _has_archived_raw_mirror is cleared also during the process.
1185 oop java_lang_Class::archive_mirror(Klass* k) {
1186 assert(HeapShared::can_write(), "must be");
1187
1188 // Mirror is already archived
1189 if (k->has_archived_mirror_index()) {
1190 assert(k->archived_java_mirror() != NULL, "no archived mirror");
1191 return k->archived_java_mirror();
1192 }
1193
1194 // No mirror
1195 oop mirror = k->java_mirror();
1196 if (mirror == NULL) {
1197 return NULL;
1198 }
1199
1200 if (k->is_instance_klass()) {
1201 InstanceKlass *ik = InstanceKlass::cast(k);
1202 assert(ik->signers() == NULL, "class with signer should have been excluded");
1203
1204 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1205 ik->is_shared_app_class())) {
1206 // Archiving mirror for classes from non-builtin loaders is not
1207 // supported.
1208 return NULL;
1209 }
1210 }
1211
1212 // Now start archiving the mirror object
1213 oop archived_mirror = HeapShared::archive_object(mirror);
1214 if (archived_mirror == NULL) {
1215 return NULL;
1216 }
1217
1218 archived_mirror = process_archived_mirror(k, mirror, archived_mirror);
1219 if (archived_mirror == NULL) {
1220 return NULL;
1221 }
1222
1223 k->set_archived_java_mirror(archived_mirror);
1224
1225 ResourceMark rm;
1226 log_trace(cds, heap, mirror)(
1227 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1228 k->external_name(), p2i(mirror), p2i(archived_mirror));
1229
1230 return archived_mirror;
1231 }
1232
1233 // The process is based on create_mirror().
1234 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1235 oop archived_mirror) {
1236 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1237 // to archived metadata and objects below.
1238 Klass *c = archived_mirror->klass();
1239 Handle archived_mirror_h(Thread::current(), archived_mirror);
1240 ResetMirrorField reset(archived_mirror_h);
1241 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1242
1243 if (k->is_array_klass()) {
1244 oop archived_comp_mirror;
1245 if (k->is_typeArray_klass()) {
1246 // The primitive type mirrors are already archived. Get the archived mirror.
1247 oop comp_mirror = component_mirror(mirror);
1248 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1249 assert(archived_comp_mirror != NULL, "Must be");
1250 } else {
1251 assert(k->is_objArray_klass(), "Must be");
1252 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1253 assert(element_klass != NULL, "Must have an element klass");
1254 archived_comp_mirror = archive_mirror(element_klass);
1255 if (archived_comp_mirror == NULL) {
1256 return NULL;
1257 }
1258 }
1259 set_component_mirror(archived_mirror, archived_comp_mirror);
1260 } else {
1261 assert(k->is_instance_klass(), "Must be");
1262
1263 // Reset local static fields in the mirror
1264 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1265
1266 set_init_lock(archived_mirror, NULL);
1267
1268 set_protection_domain(archived_mirror, NULL);
1269 set_signers(archived_mirror, NULL);
1270 set_source_file(archived_mirror, NULL);
1271 }
1272
1273 // clear class loader and mirror_module_field
1274 set_class_loader(archived_mirror, NULL);
1275 set_module(archived_mirror, NULL);
1276
1277 // The archived mirror's field at _klass_offset is still pointing to the original
1278 // klass. Updated the field in the archived mirror to point to the relocated
1279 // klass in the archive.
1280 set_klass_field_in_archived_mirror(archived_mirror, _klass_offset, as_Klass(mirror));
1281
1282 // The field at _array_klass_offset is pointing to the original one dimension
1283 // higher array klass if exists. Relocate the pointer.
1284 Klass *arr = array_klass_acquire(mirror);
1285 if (arr != NULL) {
1286 set_klass_field_in_archived_mirror(archived_mirror, _array_klass_offset, arr);
1287 }
1288 return archived_mirror;
1289 }
1290
1291 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1292 if (MetaspaceShared::relocation_delta() != 0) {
1293 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1294
1295 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1296 if (ak != NULL) {
1297 archived_mirror->metadata_field_put(_array_klass_offset,
1298 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1299 }
1300 }
1301 }
1302
1303 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1304 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1305
1306 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1307 archived_mirror->metadata_field_put(_klass_offset,
1308 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1309
1310 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1311 if (ak != NULL) {
1312 archived_mirror->metadata_field_put(_array_klass_offset,
1313 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1314 }
1315 }
1316
1317
1318 // Returns true if the mirror is updated, false if no archived mirror
1319 // data is present. After the archived mirror object is restored, the
1320 // shared klass' _has_raw_archived_mirror flag is cleared.
1321 bool java_lang_Class::restore_archived_mirror(Klass *k,
1322 Handle class_loader, Handle module,
1323 Handle protection_domain, TRAPS) {
1324 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1325 // see more details in vmClasses::resolve_all().
1326 if (!vmClasses::Class_klass_loaded()) {
1327 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1328 fixup_mirror_list()->push(k);
1329 return true;
1330 }
1331
1332 oop m = k->archived_java_mirror();
1333 assert(m != NULL, "must have stored non-null archived mirror");
1334
1335 // Sanity: clear it now to prevent re-initialization if any of the following fails
1336 k->clear_archived_mirror_index();
1337
1338 // mirror is archived, restore
1339 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1340 if (HeapShared::is_mapped()) {
1341 assert(Universe::heap()->is_archived_object(m), "must be archived mirror object");
1342 }
1343 assert(as_Klass(m) == k, "must be");
1344 Handle mirror(THREAD, m);
1345
1346 if (!k->is_array_klass()) {
1347 // - local static final fields with initial values were initialized at dump time
1348
1349 // create the init_lock
1350 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1351 set_init_lock(mirror(), r);
1352
1353 if (protection_domain.not_null()) {
1354 set_protection_domain(mirror(), protection_domain());
1355 }
1356 }
1357
1358 assert(class_loader() == k->class_loader(), "should be same");
1359 if (class_loader.not_null()) {
1360 set_class_loader(mirror(), class_loader());
1361 }
1362
1363 k->set_java_mirror(mirror);
1364
1365 set_mirror_module_field(THREAD, k, mirror, module);
1366
1367 if (log_is_enabled(Trace, cds, heap, mirror)) {
1368 ResourceMark rm(THREAD);
1369 log_trace(cds, heap, mirror)(
1370 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1371 }
1372
1373 return true;
1374 }
1375 #endif // INCLUDE_CDS_JAVA_HEAP
1376
1377 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1378 assert(_module_offset != 0, "must have been computed already");
1379 set_module(k->java_mirror(), module());
1380 }
1381
1382 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1383 assert(_oop_size_offset != 0, "must be set");
1384 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size);
1385 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size);
1386 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1387 }
1388
1389 int java_lang_Class::static_oop_field_count(oop java_class) {
1390 assert(_static_oop_field_count_offset != 0, "must be set");
1391 return java_class->int_field(_static_oop_field_count_offset);
1392 }
1393
1394 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1395 assert(_static_oop_field_count_offset != 0, "must be set");
1396 java_class->int_field_put(_static_oop_field_count_offset, size);
1397 }
1398
1399 oop java_lang_Class::protection_domain(oop java_class) {
1400 assert(_protection_domain_offset != 0, "must be set");
1401 return java_class->obj_field(_protection_domain_offset);
1402 }
1403 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1404 assert(_protection_domain_offset != 0, "must be set");
1405 java_class->obj_field_put(_protection_domain_offset, pd);
1406 }
1407
1408 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1409 assert(_component_mirror_offset != 0, "must be set");
1410 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1411 }
1412 oop java_lang_Class::component_mirror(oop java_class) {
1413 assert(_component_mirror_offset != 0, "must be set");
1414 return java_class->obj_field(_component_mirror_offset);
1415 }
1416
1417 oop java_lang_Class::init_lock(oop java_class) {
1418 assert(_init_lock_offset != 0, "must be set");
1419 return java_class->obj_field(_init_lock_offset);
1420 }
1421 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1422 assert(_init_lock_offset != 0, "must be set");
1423 java_class->obj_field_put(_init_lock_offset, init_lock);
1424 }
1425
1426 objArrayOop java_lang_Class::signers(oop java_class) {
1427 assert(_signers_offset != 0, "must be set");
1428 return (objArrayOop)java_class->obj_field(_signers_offset);
1429 }
1430 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1431 assert(_signers_offset != 0, "must be set");
1432 java_class->obj_field_put(_signers_offset, signers);
1433 }
1434
1435 oop java_lang_Class::class_data(oop java_class) {
1436 assert(_classData_offset != 0, "must be set");
1437 return java_class->obj_field(_classData_offset);
1438 }
1439 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1440 assert(_classData_offset != 0, "must be set");
1441 java_class->obj_field_put(_classData_offset, class_data);
1442 }
1443
1444 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1445 assert(_class_loader_offset != 0, "offsets should have been initialized");
1446 java_class->obj_field_put(_class_loader_offset, loader);
1447 }
1448
1449 oop java_lang_Class::class_loader(oop java_class) {
1450 assert(_class_loader_offset != 0, "must be set");
1451 return java_class->obj_field(_class_loader_offset);
1452 }
1453
1454 oop java_lang_Class::module(oop java_class) {
1455 assert(_module_offset != 0, "must be set");
1456 return java_class->obj_field(_module_offset);
1457 }
1458
1459 void java_lang_Class::set_module(oop java_class, oop module) {
1460 assert(_module_offset != 0, "must be set");
1461 java_class->obj_field_put(_module_offset, module);
1462 }
1463
1464 oop java_lang_Class::name(Handle java_class, TRAPS) {
1465 assert(_name_offset != 0, "must be set");
1466 oop o = java_class->obj_field(_name_offset);
1467 if (o == NULL) {
1468 o = StringTable::intern(as_external_name(java_class()), THREAD);
1469 java_class->obj_field_put(_name_offset, o);
1470 }
1471 return o;
1472 }
1473
1474 oop java_lang_Class::source_file(oop java_class) {
1475 assert(_source_file_offset != 0, "must be set");
1476 return java_class->obj_field(_source_file_offset);
1477 }
1478
1479 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1480 assert(_source_file_offset != 0, "must be set");
1481 java_class->obj_field_put(_source_file_offset, source_file);
1482 }
1483
1484 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1485 // This should be improved by adding a field at the Java level or by
1486 // introducing a new VM klass (see comment in ClassFileParser)
1487 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1488 if (type != T_VOID) {
1489 Klass* aklass = Universe::typeArrayKlassObj(type);
1490 assert(aklass != NULL, "correct bootstrap");
1491 release_set_array_klass(java_class, aklass);
1492 }
1493 #ifdef ASSERT
1494 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1495 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1496 #endif
1497 return java_class;
1498 }
1499
1500 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1501 assert(is_instance(java_class), "must be a Class object");
1502 java_class->metadata_field_put(_klass_offset, klass);
1503 }
1504
1505
1506 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1507 assert(is_instance(java_class), "must be a Class object");
1508 Symbol* name = NULL;
1509 bool is_instance = false;
1510 if (is_primitive(java_class)) {
1511 name = vmSymbols::type_signature(primitive_type(java_class));
1512 } else {
1513 Klass* k = as_Klass(java_class);
1514 is_instance = k->is_instance_klass();
1515 name = k->name();
1516 }
1517 if (name == NULL) {
1518 st->print("<null>");
1519 return;
1520 }
1521 if (is_instance) st->print("L");
1522 st->write((char*) name->base(), (int) name->utf8_length());
1523 if (is_instance) st->print(";");
1524 }
1525
1526 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1527 assert(is_instance(java_class), "must be a Class object");
1528 Symbol* name;
1529 if (is_primitive(java_class)) {
1530 name = vmSymbols::type_signature(primitive_type(java_class));
1531 // Because this can create a new symbol, the caller has to decrement
1532 // the refcount, so make adjustment here and below for symbols returned
1533 // that are not created or incremented due to a successful lookup.
1534 name->increment_refcount();
1535 } else {
1536 Klass* k = as_Klass(java_class);
1537 if (!k->is_instance_klass()) {
1538 name = k->name();
1539 name->increment_refcount();
1540 } else {
1541 ResourceMark rm;
1542 const char* sigstr = k->signature_name();
1543 int siglen = (int) strlen(sigstr);
1544 if (!intern_if_not_found) {
1545 name = SymbolTable::probe(sigstr, siglen);
1546 } else {
1547 name = SymbolTable::new_symbol(sigstr, siglen);
1548 }
1549 }
1550 }
1551 return name;
1552 }
1553
1554 // Returns the Java name for this Java mirror (Resource allocated)
1555 // See Klass::external_name().
1556 // For primitive type Java mirrors, its type name is returned.
1557 const char* java_lang_Class::as_external_name(oop java_class) {
1558 assert(is_instance(java_class), "must be a Class object");
1559 const char* name = NULL;
1560 if (is_primitive(java_class)) {
1561 name = type2name(primitive_type(java_class));
1562 } else {
1563 name = as_Klass(java_class)->external_name();
1564 }
1565 if (name == NULL) {
1566 name = "<null>";
1567 }
1568 return name;
1569 }
1570
1571 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1572 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1573 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1574 return k;
1575 }
1576
1577
1578 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1579 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1580 java_class->release_metadata_field_put(_array_klass_offset, klass);
1581 }
1582
1583
1584 BasicType java_lang_Class::primitive_type(oop java_class) {
1585 assert(is_primitive(java_class), "just checking");
1586 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1587 BasicType type = T_VOID;
1588 if (ak != NULL) {
1589 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1590 type = ArrayKlass::cast(ak)->element_type();
1591 } else {
1592 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1593 }
1594 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1595 return type;
1596 }
1597
1598 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1599 assert(is_instance(java_class), "must be a Class object");
1600 if (is_primitive(java_class)) {
1601 if (reference_klass != NULL)
1602 (*reference_klass) = NULL;
1603 return primitive_type(java_class);
1604 } else {
1605 if (reference_klass != NULL)
1606 (*reference_klass) = as_Klass(java_class);
1607 return T_OBJECT;
1608 }
1609 }
1610
1611
1612 oop java_lang_Class::primitive_mirror(BasicType t) {
1613 oop mirror = Universe::java_mirror(t);
1614 assert(mirror != NULL && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1615 assert(is_primitive(mirror), "must be primitive");
1616 return mirror;
1617 }
1618
1619 #define CLASS_FIELDS_DO(macro) \
1620 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1621 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1622 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1623 macro(_module_offset, k, "module", module_signature, false); \
1624 macro(_name_offset, k, "name", string_signature, false); \
1625 macro(_classData_offset, k, "classData", object_signature, false);
1626
1627 void java_lang_Class::compute_offsets() {
1628 if (_offsets_computed) {
1629 return;
1630 }
1631
1632 _offsets_computed = true;
1633
1634 InstanceKlass* k = vmClasses::Class_klass();
1635 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1636
1637 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1638 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1639 // GC treats them the same.
1640 _init_lock_offset = _component_mirror_offset;
1641
1642 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1643 }
1644
1645 #if INCLUDE_CDS
1646 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1647 f->do_bool(&_offsets_computed);
1648 f->do_u4((u4*)&_init_lock_offset);
1649
1650 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1651
1652 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1653 }
1654 #endif
1655
1656 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1657 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1658 return the_class_mirror->int_field(_classRedefinedCount_offset);
1659 }
1660
1661 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1662 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1663 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1664 }
1665
1666
1667 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1668 // platform thread structure, and a eetop offset which was used for thread
1669 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1670 // merged, so in the HotSpot VM we just use the eetop field for the thread
1671 // instead of the privateInfo_offset.
1672 //
1673 // Note: The stackSize field is only present starting in 1.4.
1674
1675 int java_lang_Thread::_name_offset;
1676 int java_lang_Thread::_group_offset;
1677 int java_lang_Thread::_contextClassLoader_offset;
1678 int java_lang_Thread::_inheritedAccessControlContext_offset;
1679 int java_lang_Thread::_priority_offset;
1680 int java_lang_Thread::_eetop_offset;
1681 int java_lang_Thread::_interrupted_offset;
1682 int java_lang_Thread::_daemon_offset;
1683 int java_lang_Thread::_stillborn_offset;
1684 int java_lang_Thread::_stackSize_offset;
1685 int java_lang_Thread::_tid_offset;
1686 int java_lang_Thread::_thread_status_offset;
1687 int java_lang_Thread::_park_blocker_offset;
1688
1689 #define THREAD_FIELDS_DO(macro) \
1690 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1691 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1692 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1693 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1694 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1695 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1696 macro(_eetop_offset, k, "eetop", long_signature, false); \
1697 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1698 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1699 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1700 macro(_tid_offset, k, "tid", long_signature, false); \
1701 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1702 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1703
1704 void java_lang_Thread::compute_offsets() {
1705 assert(_group_offset == 0, "offsets should be initialized only once");
1706
1707 InstanceKlass* k = vmClasses::Thread_klass();
1708 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1709 }
1710
1711 #if INCLUDE_CDS
1712 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1713 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1714 }
1715 #endif
1716
1717 JavaThread* java_lang_Thread::thread(oop java_thread) {
1718 return (JavaThread*)java_thread->address_field(_eetop_offset);
1719 }
1720
1721
1722 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1723 java_thread->address_field_put(_eetop_offset, (address)thread);
1724 }
1725
1726 bool java_lang_Thread::interrupted(oop java_thread) {
1727 // Make sure the caller can safely access oops.
1728 assert(Thread::current()->is_VM_thread() ||
1729 (JavaThread::current()->thread_state() != _thread_blocked &&
1730 JavaThread::current()->thread_state() != _thread_in_native),
1731 "Unsafe access to oop");
1732 return java_thread->bool_field_volatile(_interrupted_offset);
1733 }
1734
1735 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1736 // Make sure the caller can safely access oops.
1737 assert(Thread::current()->is_VM_thread() ||
1738 (JavaThread::current()->thread_state() != _thread_blocked &&
1739 JavaThread::current()->thread_state() != _thread_in_native),
1740 "Unsafe access to oop");
1741 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1742 }
1743
1744
1745 oop java_lang_Thread::name(oop java_thread) {
1746 return java_thread->obj_field(_name_offset);
1747 }
1748
1749
1750 void java_lang_Thread::set_name(oop java_thread, oop name) {
1751 java_thread->obj_field_put(_name_offset, name);
1752 }
1753
1754
1755 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1756 return (ThreadPriority)java_thread->int_field(_priority_offset);
1757 }
1758
1759
1760 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1761 java_thread->int_field_put(_priority_offset, priority);
1762 }
1763
1764
1765 oop java_lang_Thread::threadGroup(oop java_thread) {
1766 return java_thread->obj_field(_group_offset);
1767 }
1768
1769
1770 bool java_lang_Thread::is_stillborn(oop java_thread) {
1771 return java_thread->bool_field(_stillborn_offset) != 0;
1772 }
1773
1774
1775 // We never have reason to turn the stillborn bit off
1776 void java_lang_Thread::set_stillborn(oop java_thread) {
1777 java_thread->bool_field_put(_stillborn_offset, true);
1778 }
1779
1780
1781 bool java_lang_Thread::is_alive(oop java_thread) {
1782 JavaThread* thr = java_lang_Thread::thread(java_thread);
1783 return (thr != NULL);
1784 }
1785
1786
1787 bool java_lang_Thread::is_daemon(oop java_thread) {
1788 return java_thread->bool_field(_daemon_offset) != 0;
1789 }
1790
1791
1792 void java_lang_Thread::set_daemon(oop java_thread) {
1793 java_thread->bool_field_put(_daemon_offset, true);
1794 }
1795
1796 oop java_lang_Thread::context_class_loader(oop java_thread) {
1797 return java_thread->obj_field(_contextClassLoader_offset);
1798 }
1799
1800 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1801 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1802 }
1803
1804
1805 jlong java_lang_Thread::stackSize(oop java_thread) {
1806 return java_thread->long_field(_stackSize_offset);
1807 }
1808
1809 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1810 void java_lang_Thread::set_thread_status(oop java_thread,
1811 JavaThreadStatus status) {
1812 java_thread->int_field_put(_thread_status_offset, static_cast<int>(status));
1813 }
1814
1815 // Read thread status value from threadStatus field in java.lang.Thread java class.
1816 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1817 // Make sure the caller is operating on behalf of the VM or is
1818 // running VM code (state == _thread_in_vm).
1819 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1820 JavaThread::current()->thread_state() == _thread_in_vm,
1821 "Java Thread is not running in vm");
1822 return static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1823 }
1824
1825
1826 jlong java_lang_Thread::thread_id(oop java_thread) {
1827 return java_thread->long_field(_tid_offset);
1828 }
1829
1830 oop java_lang_Thread::park_blocker(oop java_thread) {
1831 return java_thread->obj_field(_park_blocker_offset);
1832 }
1833
1834 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1835 JavaThreadStatus status = static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset));
1836 switch (status) {
1837 case JavaThreadStatus::NEW : return "NEW";
1838 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
1839 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
1840 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1841 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1842 case JavaThreadStatus::PARKED : return "WAITING (parking)";
1843 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)";
1844 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1845 case JavaThreadStatus::TERMINATED : return "TERMINATED";
1846 default : return "UNKNOWN";
1847 };
1848 }
1849 int java_lang_ThreadGroup::_parent_offset;
1850 int java_lang_ThreadGroup::_name_offset;
1851 int java_lang_ThreadGroup::_threads_offset;
1852 int java_lang_ThreadGroup::_groups_offset;
1853 int java_lang_ThreadGroup::_maxPriority_offset;
1854 int java_lang_ThreadGroup::_destroyed_offset;
1855 int java_lang_ThreadGroup::_daemon_offset;
1856 int java_lang_ThreadGroup::_nthreads_offset;
1857 int java_lang_ThreadGroup::_ngroups_offset;
1858
1859 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1860 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1861 return java_thread_group->obj_field(_parent_offset);
1862 }
1863
1864 // ("name as oop" accessor is not necessary)
1865
1866 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1867 oop name = java_thread_group->obj_field(_name_offset);
1868 // ThreadGroup.name can be null
1869 if (name != NULL) {
1870 return java_lang_String::as_utf8_string(name);
1871 }
1872 return NULL;
1873 }
1874
1875 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1876 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1877 return java_thread_group->int_field(_nthreads_offset);
1878 }
1879
1880 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1881 oop threads = java_thread_group->obj_field(_threads_offset);
1882 assert(threads != NULL, "threadgroups should have threads");
1883 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1884 return objArrayOop(threads);
1885 }
1886
1887 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1888 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1889 return java_thread_group->int_field(_ngroups_offset);
1890 }
1891
1892 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1893 oop groups = java_thread_group->obj_field(_groups_offset);
1894 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1895 return objArrayOop(groups);
1896 }
1897
1898 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1899 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1900 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1901 }
1902
1903 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1904 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1905 return java_thread_group->bool_field(_destroyed_offset) != 0;
1906 }
1907
1908 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1909 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1910 return java_thread_group->bool_field(_daemon_offset) != 0;
1911 }
1912
1913 #define THREADGROUP_FIELDS_DO(macro) \
1914 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1915 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1916 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1917 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1918 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1919 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1920 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1921 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1922 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1923
1924 void java_lang_ThreadGroup::compute_offsets() {
1925 assert(_parent_offset == 0, "offsets should be initialized only once");
1926
1927 InstanceKlass* k = vmClasses::ThreadGroup_klass();
1928 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1929 }
1930
1931 #if INCLUDE_CDS
1932 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1933 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1934 }
1935 #endif
1936
1937 // java_lang_Throwable
1938
1939 int java_lang_Throwable::_backtrace_offset;
1940 int java_lang_Throwable::_detailMessage_offset;
1941 int java_lang_Throwable::_stackTrace_offset;
1942 int java_lang_Throwable::_depth_offset;
1943 int java_lang_Throwable::_cause_offset;
1944 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
1945
1946 #define THROWABLE_FIELDS_DO(macro) \
1947 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
1948 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
1949 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1950 macro(_depth_offset, k, "depth", int_signature, false); \
1951 macro(_cause_offset, k, "cause", throwable_signature, false); \
1952 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1953
1954 void java_lang_Throwable::compute_offsets() {
1955 InstanceKlass* k = vmClasses::Throwable_klass();
1956 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1957 }
1958
1959 #if INCLUDE_CDS
1960 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1961 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1962 }
1963 #endif
1964
1965 oop java_lang_Throwable::unassigned_stacktrace() {
1966 InstanceKlass* ik = vmClasses::Throwable_klass();
1967 oop base = ik->static_field_base_raw();
1968 return base->obj_field(_static_unassigned_stacktrace_offset);
1969 }
1970
1971 oop java_lang_Throwable::backtrace(oop throwable) {
1972 return throwable->obj_field_acquire(_backtrace_offset);
1973 }
1974
1975
1976 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1977 throwable->release_obj_field_put(_backtrace_offset, value);
1978 }
1979
1980 int java_lang_Throwable::depth(oop throwable) {
1981 return throwable->int_field(_depth_offset);
1982 }
1983
1984 void java_lang_Throwable::set_depth(oop throwable, int value) {
1985 throwable->int_field_put(_depth_offset, value);
1986 }
1987
1988 oop java_lang_Throwable::message(oop throwable) {
1989 return throwable->obj_field(_detailMessage_offset);
1990 }
1991
1992 oop java_lang_Throwable::cause(oop throwable) {
1993 return throwable->obj_field(_cause_offset);
1994 }
1995
1996 // Return Symbol for detailed_message or NULL
1997 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1998 PreserveExceptionMark pm(Thread::current());
1999 oop detailed_message = java_lang_Throwable::message(throwable);
2000 if (detailed_message != NULL) {
2001 return java_lang_String::as_symbol(detailed_message);
2002 }
2003 return NULL;
2004 }
2005
2006 void java_lang_Throwable::set_message(oop throwable, oop value) {
2007 throwable->obj_field_put(_detailMessage_offset, value);
2008 }
2009
2010
2011 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2012 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2013 }
2014
2015 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2016 set_stacktrace(throwable, NULL);
2017 }
2018
2019
2020 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2021 ResourceMark rm;
2022 Klass* k = throwable->klass();
2023 assert(k != NULL, "just checking");
2024 st->print("%s", k->external_name());
2025 oop msg = message(throwable);
2026 if (msg != NULL) {
2027 st->print(": %s", java_lang_String::as_utf8_string(msg));
2028 }
2029 }
2030
2031 // After this many redefines, the stack trace is unreliable.
2032 const int MAX_VERSION = USHRT_MAX;
2033
2034 static inline bool version_matches(Method* method, int version) {
2035 assert(version < MAX_VERSION, "version is too big");
2036 return method != NULL && (method->constants()->version() == version);
2037 }
2038
2039 // This class provides a simple wrapper over the internal structure of
2040 // exception backtrace to insulate users of the backtrace from needing
2041 // to know what it looks like.
2042 // The code of this class is not GC safe. Allocations can only happen
2043 // in expand().
2044 class BacktraceBuilder: public StackObj {
2045 friend class BacktraceIterator;
2046 private:
2047 Handle _backtrace;
2048 objArrayOop _head;
2049 typeArrayOop _methods;
2050 typeArrayOop _bcis;
2051 objArrayOop _mirrors;
2052 typeArrayOop _names; // Needed to insulate method name against redefinition.
2053 // True if the top frame of the backtrace is omitted because it shall be hidden.
2054 bool _has_hidden_top_frame;
2055 int _index;
2056 NoSafepointVerifier _nsv;
2057
2058 enum {
2059 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2060 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2061 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2062 trace_names_offset = java_lang_Throwable::trace_names_offset,
2063 trace_next_offset = java_lang_Throwable::trace_next_offset,
2064 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2065 trace_size = java_lang_Throwable::trace_size,
2066 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2067 };
2068
2069 // get info out of chunks
2070 static typeArrayOop get_methods(objArrayHandle chunk) {
2071 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2072 assert(methods != NULL, "method array should be initialized in backtrace");
2073 return methods;
2074 }
2075 static typeArrayOop get_bcis(objArrayHandle chunk) {
2076 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2077 assert(bcis != NULL, "bci array should be initialized in backtrace");
2078 return bcis;
2079 }
2080 static objArrayOop get_mirrors(objArrayHandle chunk) {
2081 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2082 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2083 return mirrors;
2084 }
2085 static typeArrayOop get_names(objArrayHandle chunk) {
2086 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2087 assert(names != NULL, "names array should be initialized in backtrace");
2088 return names;
2089 }
2090 static bool has_hidden_top_frame(objArrayHandle chunk) {
2091 oop hidden = chunk->obj_at(trace_hidden_offset);
2092 return hidden != NULL;
2093 }
2094
2095 public:
2096
2097 // constructor for new backtrace
2098 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2099 expand(CHECK);
2100 _backtrace = Handle(THREAD, _head);
2101 _index = 0;
2102 }
2103
2104 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2105 _methods = get_methods(backtrace);
2106 _bcis = get_bcis(backtrace);
2107 _mirrors = get_mirrors(backtrace);
2108 _names = get_names(backtrace);
2109 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2110 assert(_methods->length() == _bcis->length() &&
2111 _methods->length() == _mirrors->length() &&
2112 _mirrors->length() == _names->length(),
2113 "method and source information arrays should match");
2114
2115 // head is the preallocated backtrace
2116 _head = backtrace();
2117 _backtrace = Handle(thread, _head);
2118 _index = 0;
2119 }
2120
2121 void expand(TRAPS) {
2122 objArrayHandle old_head(THREAD, _head);
2123 PauseNoSafepointVerifier pnsv(&_nsv);
2124
2125 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2126 objArrayHandle new_head(THREAD, head);
2127
2128 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2129 typeArrayHandle new_methods(THREAD, methods);
2130
2131 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2132 typeArrayHandle new_bcis(THREAD, bcis);
2133
2134 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2135 objArrayHandle new_mirrors(THREAD, mirrors);
2136
2137 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2138 typeArrayHandle new_names(THREAD, names);
2139
2140 if (!old_head.is_null()) {
2141 old_head->obj_at_put(trace_next_offset, new_head());
2142 }
2143 new_head->obj_at_put(trace_methods_offset, new_methods());
2144 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2145 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2146 new_head->obj_at_put(trace_names_offset, new_names());
2147 new_head->obj_at_put(trace_hidden_offset, NULL);
2148
2149 _head = new_head();
2150 _methods = new_methods();
2151 _bcis = new_bcis();
2152 _mirrors = new_mirrors();
2153 _names = new_names();
2154 _index = 0;
2155 }
2156
2157 oop backtrace() {
2158 return _backtrace();
2159 }
2160
2161 inline void push(Method* method, int bci, TRAPS) {
2162 // Smear the -1 bci to 0 since the array only holds unsigned
2163 // shorts. The later line number lookup would just smear the -1
2164 // to a 0 even if it could be recorded.
2165 if (bci == SynchronizationEntryBCI) bci = 0;
2166
2167 if (_index >= trace_chunk_size) {
2168 methodHandle mhandle(THREAD, method);
2169 expand(CHECK);
2170 method = mhandle();
2171 }
2172
2173 _methods->ushort_at_put(_index, method->orig_method_idnum());
2174 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2175
2176 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2177 // klass owning the symbols alive so their refcounts aren't decremented.
2178 Symbol* name = method->name();
2179 _names->symbol_at_put(_index, name);
2180
2181 // We need to save the mirrors in the backtrace to keep the class
2182 // from being unloaded while we still have this stack trace.
2183 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2184 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2185 _index++;
2186 }
2187
2188 void set_has_hidden_top_frame() {
2189 if (!_has_hidden_top_frame) {
2190 // It would be nice to add java/lang/Boolean::TRUE here
2191 // to indicate that this backtrace has a hidden top frame.
2192 // But this code is used before TRUE is allocated.
2193 // Therefore let's just use an arbitrary legal oop
2194 // available right here. _methods is a short[].
2195 assert(_methods != NULL, "we need a legal oop");
2196 _has_hidden_top_frame = true;
2197 _head->obj_at_put(trace_hidden_offset, _methods);
2198 }
2199 }
2200 };
2201
2202 struct BacktraceElement : public StackObj {
2203 int _method_id;
2204 int _bci;
2205 int _version;
2206 Symbol* _name;
2207 Handle _mirror;
2208 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2209 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2210 };
2211
2212 class BacktraceIterator : public StackObj {
2213 int _index;
2214 objArrayHandle _result;
2215 objArrayHandle _mirrors;
2216 typeArrayHandle _methods;
2217 typeArrayHandle _bcis;
2218 typeArrayHandle _names;
2219
2220 void init(objArrayHandle result, Thread* thread) {
2221 // Get method id, bci, version and mirror from chunk
2222 _result = result;
2223 if (_result.not_null()) {
2224 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2225 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2226 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2227 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2228 _index = 0;
2229 }
2230 }
2231 public:
2232 BacktraceIterator(objArrayHandle result, Thread* thread) {
2233 init(result, thread);
2234 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2235 }
2236
2237 BacktraceElement next(Thread* thread) {
2238 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2239 _methods->ushort_at(_index),
2240 Backtrace::version_at(_bcis->int_at(_index)),
2241 Backtrace::bci_at(_bcis->int_at(_index)),
2242 _names->symbol_at(_index));
2243 _index++;
2244
2245 if (_index >= java_lang_Throwable::trace_chunk_size) {
2246 int next_offset = java_lang_Throwable::trace_next_offset;
2247 // Get next chunk
2248 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2249 init(result, thread);
2250 }
2251 return e;
2252 }
2253
2254 bool repeat() {
2255 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2256 }
2257 };
2258
2259
2260 // Print stack trace element to resource allocated buffer
2261 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2262 int version, int bci, Symbol* name) {
2263 ResourceMark rm;
2264
2265 // Get strings and string lengths
2266 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2267 const char* klass_name = holder->external_name();
2268 int buf_len = (int)strlen(klass_name);
2269
2270 char* method_name = name->as_C_string();
2271 buf_len += (int)strlen(method_name);
2272
2273 char* source_file_name = NULL;
2274 Symbol* source = Backtrace::get_source_file_name(holder, version);
2275 if (source != NULL) {
2276 source_file_name = source->as_C_string();
2277 buf_len += (int)strlen(source_file_name);
2278 }
2279
2280 char *module_name = NULL, *module_version = NULL;
2281 ModuleEntry* module = holder->module();
2282 if (module->is_named()) {
2283 module_name = module->name()->as_C_string();
2284 buf_len += (int)strlen(module_name);
2285 if (module->version() != NULL) {
2286 module_version = module->version()->as_C_string();
2287 buf_len += (int)strlen(module_version);
2288 }
2289 }
2290
2291 // Allocate temporary buffer with extra space for formatting and line number
2292 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2293
2294 // Print stack trace line in buffer
2295 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2296
2297 // Print module information
2298 if (module_name != NULL) {
2299 if (module_version != NULL) {
2300 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2301 } else {
2302 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2303 }
2304 }
2305
2306 // The method can be NULL if the requested class version is gone
2307 Method* method = holder->method_with_orig_idnum(method_id, version);
2308 if (!version_matches(method, version)) {
2309 strcat(buf, "Redefined)");
2310 } else {
2311 int line_number = Backtrace::get_line_number(method, bci);
2312 if (line_number == -2) {
2313 strcat(buf, "Native Method)");
2314 } else {
2315 if (source_file_name != NULL && (line_number != -1)) {
2316 // Sourcename and linenumber
2317 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2318 } else if (source_file_name != NULL) {
2319 // Just sourcename
2320 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2321 } else {
2322 // Neither sourcename nor linenumber
2323 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2324 }
2325 CompiledMethod* nm = method->code();
2326 if (WizardMode && nm != NULL) {
2327 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2328 }
2329 }
2330 }
2331
2332 st->print_cr("%s", buf);
2333 }
2334
2335 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2336 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2337 int method_id = method->orig_method_idnum();
2338 int version = method->constants()->version();
2339 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2340 }
2341
2342 /**
2343 * Print the throwable message and its stack trace plus all causes by walking the
2344 * cause chain. The output looks the same as of Throwable.printStackTrace().
2345 */
2346 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2347 // First, print the message.
2348 print(throwable(), st);
2349 st->cr();
2350
2351 // Now print the stack trace.
2352 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2353 while (throwable.not_null()) {
2354 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2355 if (result.is_null()) {
2356 st->print_raw_cr("\t<<no stack trace available>>");
2357 return;
2358 }
2359 BacktraceIterator iter(result, THREAD);
2360
2361 while (iter.repeat()) {
2362 BacktraceElement bte = iter.next(THREAD);
2363 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2364 }
2365 {
2366 // Call getCause() which doesn't necessarily return the _cause field.
2367 ExceptionMark em(THREAD);
2368 JavaValue cause(T_OBJECT);
2369 JavaCalls::call_virtual(&cause,
2370 throwable,
2371 throwable->klass(),
2372 vmSymbols::getCause_name(),
2373 vmSymbols::void_throwable_signature(),
2374 THREAD);
2375 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2376 if (HAS_PENDING_EXCEPTION) {
2377 CLEAR_PENDING_EXCEPTION;
2378 throwable = Handle();
2379 } else {
2380 throwable = Handle(THREAD, cause.get_oop());
2381 if (throwable.not_null()) {
2382 st->print("Caused by: ");
2383 print(throwable(), st);
2384 st->cr();
2385 }
2386 }
2387 }
2388 }
2389 }
2390
2391 /**
2392 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2393 */
2394 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2395 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected");
2396 JavaValue result(T_VOID);
2397 JavaCalls::call_virtual(&result,
2398 throwable,
2399 vmClasses::Throwable_klass(),
2400 vmSymbols::printStackTrace_name(),
2401 vmSymbols::void_method_signature(),
2402 THREAD);
2403 }
2404
2405 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2406 if (!StackTraceInThrowable) return;
2407 ResourceMark rm(THREAD);
2408
2409 // Start out by clearing the backtrace for this object, in case the VM
2410 // runs out of memory while allocating the stack trace
2411 set_backtrace(throwable(), NULL);
2412 // Clear lazily constructed Java level stacktrace if refilling occurs
2413 // This is unnecessary in 1.7+ but harmless
2414 clear_stacktrace(throwable());
2415
2416 int max_depth = MaxJavaStackTraceDepth;
2417 JavaThread* thread = THREAD;
2418
2419 BacktraceBuilder bt(CHECK);
2420
2421 // If there is no Java frame just return the method that was being called
2422 // with bci 0
2423 if (!thread->has_last_Java_frame()) {
2424 if (max_depth >= 1 && method() != NULL) {
2425 bt.push(method(), 0, CHECK);
2426 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2427 set_depth(throwable(), 1);
2428 set_backtrace(throwable(), bt.backtrace());
2429 }
2430 return;
2431 }
2432
2433 // Instead of using vframe directly, this version of fill_in_stack_trace
2434 // basically handles everything by hand. This significantly improved the
2435 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2436 // See bug 6333838 for more details.
2437 // The "ASSERT" here is to verify this method generates the exactly same stack
2438 // trace as utilizing vframe.
2439 #ifdef ASSERT
2440 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */);
2441 #endif
2442 int total_count = 0;
2443 RegisterMap map(thread, false /* update */, false /* process_frames */);
2444 int decode_offset = 0;
2445 CompiledMethod* nm = NULL;
2446 bool skip_fillInStackTrace_check = false;
2447 bool skip_throwableInit_check = false;
2448 bool skip_hidden = !ShowHiddenFrames;
2449
2450 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2451 Method* method = NULL;
2452 int bci = 0;
2453
2454 // Compiled java method case.
2455 if (decode_offset != 0) {
2456 DebugInfoReadStream stream(nm, decode_offset);
2457 decode_offset = stream.read_int();
2458 method = (Method*)nm->metadata_at(stream.read_int());
2459 bci = stream.read_bci();
2460 } else {
2461 if (fr.is_first_frame()) break;
2462 address pc = fr.pc();
2463 if (fr.is_interpreted_frame()) {
2464 address bcp = fr.interpreter_frame_bcp();
2465 method = fr.interpreter_frame_method();
2466 bci = method->bci_from(bcp);
2467 fr = fr.sender(&map);
2468 } else {
2469 CodeBlob* cb = fr.cb();
2470 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2471 // but non nmethod
2472 fr = fr.sender(&map);
2473 if (cb == NULL || !cb->is_compiled()) {
2474 continue;
2475 }
2476 nm = cb->as_compiled_method();
2477 if (nm->method()->is_native()) {
2478 method = nm->method();
2479 bci = 0;
2480 } else {
2481 PcDesc* pd = nm->pc_desc_at(pc);
2482 decode_offset = pd->scope_decode_offset();
2483 // if decode_offset is not equal to 0, it will execute the
2484 // "compiled java method case" at the beginning of the loop.
2485 continue;
2486 }
2487 }
2488 }
2489 #ifdef ASSERT
2490 assert(st.method() == method && st.bci() == bci,
2491 "Wrong stack trace");
2492 st.next();
2493 #endif
2494
2495 // the format of the stacktrace will be:
2496 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2497 // - 0 or more <init> methods for the exception class (skipped)
2498 // - rest of the stack
2499
2500 if (!skip_fillInStackTrace_check) {
2501 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2502 throwable->is_a(method->method_holder())) {
2503 continue;
2504 }
2505 else {
2506 skip_fillInStackTrace_check = true; // gone past them all
2507 }
2508 }
2509 if (!skip_throwableInit_check) {
2510 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2511
2512 // skip <init> methods of the exception class and superclasses
2513 // This is similar to classic VM.
2514 if (method->name() == vmSymbols::object_initializer_name() &&
2515 throwable->is_a(method->method_holder())) {
2516 continue;
2517 } else {
2518 // there are none or we've seen them all - either way stop checking
2519 skip_throwableInit_check = true;
2520 }
2521 }
2522 if (method->is_hidden()) {
2523 if (skip_hidden) {
2524 if (total_count == 0) {
2525 // The top frame will be hidden from the stack trace.
2526 bt.set_has_hidden_top_frame();
2527 }
2528 continue;
2529 }
2530 }
2531 bt.push(method, bci, CHECK);
2532 total_count++;
2533 }
2534
2535 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2536
2537 // Put completed stack trace into throwable object
2538 set_backtrace(throwable(), bt.backtrace());
2539 set_depth(throwable(), total_count);
2540 }
2541
2542 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2543 // No-op if stack trace is disabled
2544 if (!StackTraceInThrowable) {
2545 return;
2546 }
2547
2548 // Disable stack traces for some preallocated out of memory errors
2549 if (!Universe::should_fill_in_stack_trace(throwable)) {
2550 return;
2551 }
2552
2553 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2554 PreserveExceptionMark pm(THREAD);
2555
2556 fill_in_stack_trace(throwable, method, THREAD);
2557 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the
2558 // original exception via the PreserveExceptionMark destructor.
2559 CLEAR_PENDING_EXCEPTION;
2560 }
2561
2562 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2563 // Allocate stack trace - backtrace is created but not filled in
2564
2565 // No-op if stack trace is disabled
2566 if (!StackTraceInThrowable) return;
2567 BacktraceBuilder bt(CHECK); // creates a backtrace
2568 set_backtrace(throwable(), bt.backtrace());
2569 }
2570
2571
2572 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2573 // Fill in stack trace into preallocated backtrace (no GC)
2574
2575 // No-op if stack trace is disabled
2576 if (!StackTraceInThrowable) return;
2577
2578 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2579
2580 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2581
2582 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2583 assert(backtrace.not_null(), "backtrace should have been preallocated");
2584
2585 ResourceMark rm(THREAD);
2586 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2587
2588 BacktraceBuilder bt(THREAD, backtrace);
2589
2590 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2591 // methods as preallocated errors aren't created by "java" code.
2592
2593 // fill in as much stack trace as possible
2594 int chunk_count = 0;
2595 for (;!st.at_end(); st.next()) {
2596 bt.push(st.method(), st.bci(), CHECK);
2597 chunk_count++;
2598
2599 // Bail-out for deep stacks
2600 if (chunk_count >= trace_chunk_size) break;
2601 }
2602 set_depth(throwable(), chunk_count);
2603 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2604
2605 // We support the Throwable immutability protocol defined for Java 7.
2606 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2607 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2608 }
2609
2610 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2611 objArrayHandle stack_trace_array_h, TRAPS) {
2612
2613 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2614 THROW(vmSymbols::java_lang_NullPointerException());
2615 }
2616
2617 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2618
2619 if (stack_trace_array_h->length() != depth(throwable())) {
2620 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2621 }
2622
2623 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2624 BacktraceIterator iter(result, THREAD);
2625
2626 int index = 0;
2627 while (iter.repeat()) {
2628 BacktraceElement bte = iter.next(THREAD);
2629
2630 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2631
2632 if (stack_trace_element.is_null()) {
2633 THROW(vmSymbols::java_lang_NullPointerException());
2634 }
2635
2636 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2637 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2638
2639 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2640 method,
2641 bte._version,
2642 bte._bci,
2643 bte._name, CHECK);
2644 }
2645 }
2646
2647 Handle java_lang_Throwable::get_cause_with_stack_trace(Handle throwable, TRAPS) {
2648 // Call to JVM to fill in the stack trace and clear declaringClassObject to
2649 // not keep classes alive in the stack trace.
2650 // call this: public StackTraceElement[] getStackTrace()
2651 assert(throwable.not_null(), "shouldn't be");
2652
2653 JavaValue result(T_ARRAY);
2654 JavaCalls::call_virtual(&result, throwable,
2655 vmClasses::Throwable_klass(),
2656 vmSymbols::getStackTrace_name(),
2657 vmSymbols::getStackTrace_signature(),
2658 CHECK_NH);
2659 Handle stack_trace(THREAD, result.get_oop());
2660 assert(stack_trace->is_objArray(), "Should be an array");
2661
2662 // Throw ExceptionInInitializerError as the cause with this exception in
2663 // the message and stack trace.
2664
2665 // Now create the message with the original exception and thread name.
2666 Symbol* message = java_lang_Throwable::detail_message(throwable());
2667 ResourceMark rm(THREAD);
2668 stringStream st;
2669 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(),
2670 message == nullptr ? "" : ":");
2671 if (message == NULL) {
2672 st.print("[in thread \"%s\"]", THREAD->name());
2673 } else {
2674 st.print("%s [in thread \"%s\"]", message->as_C_string(), THREAD->name());
2675 }
2676
2677 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError();
2678 Handle h_cause = Exceptions::new_exception(THREAD, exception_name, st.as_string());
2679
2680 // If new_exception returns a different exception while creating the exception, return null.
2681 if (h_cause->klass()->name() != exception_name) {
2682 log_info(class, init)("Exception thrown while saving initialization exception %s",
2683 h_cause->klass()->external_name());
2684 return Handle();
2685 }
2686 java_lang_Throwable::set_stacktrace(h_cause(), stack_trace());
2687 // Clear backtrace because the stacktrace should be used instead.
2688 set_backtrace(h_cause(), NULL);
2689 return h_cause;
2690 }
2691
2692 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2693 JavaThread* current = JavaThread::current();
2694 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
2695 BacktraceIterator iter(result, current);
2696 // No backtrace available.
2697 if (!iter.repeat()) return false;
2698
2699 // If the exception happened in a frame that has been hidden, i.e.,
2700 // omitted from the back trace, we can not compute the message.
2701 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2702 if (hidden != NULL) {
2703 return false;
2704 }
2705
2706 // Get first backtrace element.
2707 BacktraceElement bte = iter.next(current);
2708
2709 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2710 assert(holder != NULL, "first element should be non-null");
2711 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2712
2713 // Original version is no longer available.
2714 if (m == NULL || !version_matches(m, bte._version)) {
2715 return false;
2716 }
2717
2718 *method = m;
2719 *bci = bte._bci;
2720 return true;
2721 }
2722
2723 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2724 // Allocate java.lang.StackTraceElement instance
2725 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2726 assert(k != NULL, "must be loaded in 1.4+");
2727 if (k->should_be_initialized()) {
2728 k->initialize(CHECK_NULL);
2729 }
2730
2731 Handle element = k->allocate_instance_handle(CHECK_NULL);
2732
2733 int version = method->constants()->version();
2734 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2735 return element();
2736 }
2737
2738 void java_lang_StackTraceElement::fill_in(Handle element,
2739 InstanceKlass* holder, const methodHandle& method,
2740 int version, int bci, Symbol* name, TRAPS) {
2741 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check");
2742
2743 ResourceMark rm(THREAD);
2744 HandleMark hm(THREAD);
2745
2746 // Fill in class name
2747 Handle java_class(THREAD, holder->java_mirror());
2748 oop classname = java_lang_Class::name(java_class, CHECK);
2749 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2750 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2751
2752 oop loader = holder->class_loader();
2753 if (loader != NULL) {
2754 oop loader_name = java_lang_ClassLoader::name(loader);
2755 if (loader_name != NULL)
2756 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2757 }
2758
2759 // Fill in method name
2760 oop methodname = StringTable::intern(name, CHECK);
2761 java_lang_StackTraceElement::set_methodName(element(), methodname);
2762
2763 // Fill in module name and version
2764 ModuleEntry* module = holder->module();
2765 if (module->is_named()) {
2766 oop module_name = StringTable::intern(module->name(), CHECK);
2767 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2768 oop module_version;
2769 if (module->version() != NULL) {
2770 module_version = StringTable::intern(module->version(), CHECK);
2771 } else {
2772 module_version = NULL;
2773 }
2774 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2775 }
2776
2777 if (method() == NULL || !version_matches(method(), version)) {
2778 // The method was redefined, accurate line number information isn't available
2779 java_lang_StackTraceElement::set_fileName(element(), NULL);
2780 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2781 } else {
2782 Symbol* source;
2783 oop source_file;
2784 int line_number;
2785 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2786
2787 java_lang_StackTraceElement::set_fileName(element(), source_file);
2788 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2789 }
2790 }
2791
2792 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2793 InstanceKlass* holder,
2794 int version,
2795 const methodHandle& method,
2796 int bci,
2797 Symbol*& source,
2798 oop& source_file,
2799 int& line_number, TRAPS) {
2800 // Fill in source file name and line number.
2801 source = Backtrace::get_source_file_name(holder, version);
2802 source_file = java_lang_Class::source_file(java_class());
2803 if (source != NULL) {
2804 // Class was not redefined. We can trust its cache if set,
2805 // else we have to initialize it.
2806 if (source_file == NULL) {
2807 source_file = StringTable::intern(source, CHECK);
2808 java_lang_Class::set_source_file(java_class(), source_file);
2809 }
2810 } else {
2811 // Class was redefined. Dump the cache if it was set.
2812 if (source_file != NULL) {
2813 source_file = NULL;
2814 java_lang_Class::set_source_file(java_class(), source_file);
2815 }
2816 }
2817 line_number = Backtrace::get_line_number(method(), bci);
2818 }
2819
2820 #if INCLUDE_JVMCI
2821 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2822 Symbol*& filename, int& line_number, TRAPS) {
2823 ResourceMark rm(THREAD);
2824 HandleMark hm(THREAD);
2825
2826 filename = NULL;
2827 line_number = -1;
2828
2829 oop source_file;
2830 int version = method->constants()->version();
2831 InstanceKlass* holder = method->method_holder();
2832 Handle java_class(THREAD, holder->java_mirror());
2833 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2834 }
2835 #endif // INCLUDE_JVMCI
2836
2837 // java_lang_StackFrameInfo
2838
2839 int java_lang_StackFrameInfo::_memberName_offset;
2840 int java_lang_StackFrameInfo::_bci_offset;
2841 int java_lang_StackFrameInfo::_version_offset;
2842
2843 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2844 macro(_memberName_offset, k, "memberName", object_signature, false); \
2845 macro(_bci_offset, k, "bci", int_signature, false)
2846
2847 void java_lang_StackFrameInfo::compute_offsets() {
2848 InstanceKlass* k = vmClasses::StackFrameInfo_klass();
2849 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2850 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2851 }
2852
2853 #if INCLUDE_CDS
2854 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2855 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2856 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2857 }
2858 #endif
2859
2860 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2861 HandleMark hm(THREAD);
2862 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2863 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2864 // we should expand MemberName::name when Throwable uses StackTrace
2865 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2866 return method;
2867 }
2868
2869 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2870 // set Method* or mid/cpref
2871 HandleMark hm(THREAD);
2872 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2873 InstanceKlass* ik = method->method_holder();
2874 CallInfo info(method(), ik, CHECK);
2875 MethodHandles::init_method_MemberName(mname, info);
2876 // set bci
2877 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2878 // method may be redefined; store the version
2879 int version = method->constants()->version();
2880 assert((jushort)version == version, "version should be short");
2881 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2882 }
2883
2884 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2885 ResourceMark rm(THREAD);
2886 HandleMark hm(THREAD);
2887 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2888 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2889 InstanceKlass* holder = InstanceKlass::cast(clazz);
2890 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2891
2892 short version = stackFrame->short_field(_version_offset);
2893 int bci = stackFrame->int_field(_bci_offset);
2894 Symbol* name = method->name();
2895 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2896 version, bci, name, CHECK);
2897 }
2898
2899 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2900 element->short_field_put(_version_offset, value);
2901 }
2902
2903 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2904 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2905 element->int_field_put(_bci_offset, value);
2906 }
2907
2908 int java_lang_LiveStackFrameInfo::_monitors_offset;
2909 int java_lang_LiveStackFrameInfo::_locals_offset;
2910 int java_lang_LiveStackFrameInfo::_operands_offset;
2911 int java_lang_LiveStackFrameInfo::_mode_offset;
2912
2913 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2914 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2915 macro(_locals_offset, k, "locals", object_array_signature, false); \
2916 macro(_operands_offset, k, "operands", object_array_signature, false); \
2917 macro(_mode_offset, k, "mode", int_signature, false)
2918
2919 void java_lang_LiveStackFrameInfo::compute_offsets() {
2920 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass();
2921 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2922 }
2923
2924 #if INCLUDE_CDS
2925 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2926 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2927 }
2928 #endif
2929
2930 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
2931 element->obj_field_put(_monitors_offset, value);
2932 }
2933
2934 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
2935 element->obj_field_put(_locals_offset, value);
2936 }
2937
2938 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
2939 element->obj_field_put(_operands_offset, value);
2940 }
2941
2942 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
2943 element->int_field_put(_mode_offset, value);
2944 }
2945
2946
2947 // java_lang_AccessibleObject
2948
2949 int java_lang_reflect_AccessibleObject::_override_offset;
2950
2951 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2952 macro(_override_offset, k, "override", bool_signature, false)
2953
2954 void java_lang_reflect_AccessibleObject::compute_offsets() {
2955 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass();
2956 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2957 }
2958
2959 #if INCLUDE_CDS
2960 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2961 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2962 }
2963 #endif
2964
2965 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2966 return (jboolean) reflect->bool_field(_override_offset);
2967 }
2968
2969 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2970 reflect->bool_field_put(_override_offset, (int) value);
2971 }
2972
2973 // java_lang_reflect_Method
2974
2975 int java_lang_reflect_Method::_clazz_offset;
2976 int java_lang_reflect_Method::_name_offset;
2977 int java_lang_reflect_Method::_returnType_offset;
2978 int java_lang_reflect_Method::_parameterTypes_offset;
2979 int java_lang_reflect_Method::_exceptionTypes_offset;
2980 int java_lang_reflect_Method::_slot_offset;
2981 int java_lang_reflect_Method::_modifiers_offset;
2982 int java_lang_reflect_Method::_signature_offset;
2983 int java_lang_reflect_Method::_annotations_offset;
2984 int java_lang_reflect_Method::_parameter_annotations_offset;
2985 int java_lang_reflect_Method::_annotation_default_offset;
2986
2987 #define METHOD_FIELDS_DO(macro) \
2988 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2989 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2990 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2991 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2992 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2993 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2994 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2995 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2996 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2997 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2998 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2999
3000 void java_lang_reflect_Method::compute_offsets() {
3001 InstanceKlass* k = vmClasses::reflect_Method_klass();
3002 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3003 }
3004
3005 #if INCLUDE_CDS
3006 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
3007 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3008 }
3009 #endif
3010
3011 Handle java_lang_reflect_Method::create(TRAPS) {
3012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3013 Klass* klass = vmClasses::reflect_Method_klass();
3014 // This class is eagerly initialized during VM initialization, since we keep a reference
3015 // to one of the methods
3016 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
3017 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
3018 }
3019
3020 oop java_lang_reflect_Method::clazz(oop reflect) {
3021 return reflect->obj_field(_clazz_offset);
3022 }
3023
3024 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
3025 reflect->obj_field_put(_clazz_offset, value);
3026 }
3027
3028 int java_lang_reflect_Method::slot(oop reflect) {
3029 return reflect->int_field(_slot_offset);
3030 }
3031
3032 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
3033 reflect->int_field_put(_slot_offset, value);
3034 }
3035
3036 void java_lang_reflect_Method::set_name(oop method, oop value) {
3037 method->obj_field_put(_name_offset, value);
3038 }
3039
3040 oop java_lang_reflect_Method::return_type(oop method) {
3041 return method->obj_field(_returnType_offset);
3042 }
3043
3044 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3045 method->obj_field_put(_returnType_offset, value);
3046 }
3047
3048 oop java_lang_reflect_Method::parameter_types(oop method) {
3049 return method->obj_field(_parameterTypes_offset);
3050 }
3051
3052 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3053 method->obj_field_put(_parameterTypes_offset, value);
3054 }
3055
3056 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3057 method->obj_field_put(_exceptionTypes_offset, value);
3058 }
3059
3060 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3061 method->int_field_put(_modifiers_offset, value);
3062 }
3063
3064 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3065 method->obj_field_put(_signature_offset, value);
3066 }
3067
3068 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3069 method->obj_field_put(_annotations_offset, value);
3070 }
3071
3072 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3073 method->obj_field_put(_parameter_annotations_offset, value);
3074 }
3075
3076 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3077 method->obj_field_put(_annotation_default_offset, value);
3078 }
3079
3080 int java_lang_reflect_Constructor::_clazz_offset;
3081 int java_lang_reflect_Constructor::_parameterTypes_offset;
3082 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3083 int java_lang_reflect_Constructor::_slot_offset;
3084 int java_lang_reflect_Constructor::_modifiers_offset;
3085 int java_lang_reflect_Constructor::_signature_offset;
3086 int java_lang_reflect_Constructor::_annotations_offset;
3087 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3088
3089 #define CONSTRUCTOR_FIELDS_DO(macro) \
3090 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3091 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3092 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3093 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3094 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3095 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3096 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3097 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3098
3099 void java_lang_reflect_Constructor::compute_offsets() {
3100 InstanceKlass* k = vmClasses::reflect_Constructor_klass();
3101 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3102 }
3103
3104 #if INCLUDE_CDS
3105 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3106 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3107 }
3108 #endif
3109
3110 Handle java_lang_reflect_Constructor::create(TRAPS) {
3111 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3112 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3113 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3114 InstanceKlass* ik = InstanceKlass::cast(k);
3115 // Ensure it is initialized
3116 ik->initialize(CHECK_NH);
3117 return ik->allocate_instance_handle(THREAD);
3118 }
3119
3120 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3121 return reflect->obj_field(_clazz_offset);
3122 }
3123
3124 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3125 reflect->obj_field_put(_clazz_offset, value);
3126 }
3127
3128 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3129 return constructor->obj_field(_parameterTypes_offset);
3130 }
3131
3132 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3133 constructor->obj_field_put(_parameterTypes_offset, value);
3134 }
3135
3136 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3137 constructor->obj_field_put(_exceptionTypes_offset, value);
3138 }
3139
3140 int java_lang_reflect_Constructor::slot(oop reflect) {
3141 return reflect->int_field(_slot_offset);
3142 }
3143
3144 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3145 reflect->int_field_put(_slot_offset, value);
3146 }
3147
3148 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3149 constructor->int_field_put(_modifiers_offset, value);
3150 }
3151
3152 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3153 constructor->obj_field_put(_signature_offset, value);
3154 }
3155
3156 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3157 constructor->obj_field_put(_annotations_offset, value);
3158 }
3159
3160 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3161 method->obj_field_put(_parameter_annotations_offset, value);
3162 }
3163
3164 int java_lang_reflect_Field::_clazz_offset;
3165 int java_lang_reflect_Field::_name_offset;
3166 int java_lang_reflect_Field::_type_offset;
3167 int java_lang_reflect_Field::_slot_offset;
3168 int java_lang_reflect_Field::_modifiers_offset;
3169 int java_lang_reflect_Field::_trusted_final_offset;
3170 int java_lang_reflect_Field::_signature_offset;
3171 int java_lang_reflect_Field::_annotations_offset;
3172
3173 #define FIELD_FIELDS_DO(macro) \
3174 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3175 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3176 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3177 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3178 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3179 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3180 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3181 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3182
3183 void java_lang_reflect_Field::compute_offsets() {
3184 InstanceKlass* k = vmClasses::reflect_Field_klass();
3185 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3186 }
3187
3188 #if INCLUDE_CDS
3189 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3190 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3191 }
3192 #endif
3193
3194 Handle java_lang_reflect_Field::create(TRAPS) {
3195 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3196 Symbol* name = vmSymbols::java_lang_reflect_Field();
3197 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3198 InstanceKlass* ik = InstanceKlass::cast(k);
3199 // Ensure it is initialized
3200 ik->initialize(CHECK_NH);
3201 return ik->allocate_instance_handle(THREAD);
3202 }
3203
3204 oop java_lang_reflect_Field::clazz(oop reflect) {
3205 return reflect->obj_field(_clazz_offset);
3206 }
3207
3208 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3209 reflect->obj_field_put(_clazz_offset, value);
3210 }
3211
3212 oop java_lang_reflect_Field::name(oop field) {
3213 return field->obj_field(_name_offset);
3214 }
3215
3216 void java_lang_reflect_Field::set_name(oop field, oop value) {
3217 field->obj_field_put(_name_offset, value);
3218 }
3219
3220 oop java_lang_reflect_Field::type(oop field) {
3221 return field->obj_field(_type_offset);
3222 }
3223
3224 void java_lang_reflect_Field::set_type(oop field, oop value) {
3225 field->obj_field_put(_type_offset, value);
3226 }
3227
3228 int java_lang_reflect_Field::slot(oop reflect) {
3229 return reflect->int_field(_slot_offset);
3230 }
3231
3232 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3233 reflect->int_field_put(_slot_offset, value);
3234 }
3235
3236 int java_lang_reflect_Field::modifiers(oop field) {
3237 return field->int_field(_modifiers_offset);
3238 }
3239
3240 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3241 field->int_field_put(_modifiers_offset, value);
3242 }
3243
3244 void java_lang_reflect_Field::set_trusted_final(oop field) {
3245 field->bool_field_put(_trusted_final_offset, true);
3246 }
3247
3248 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3249 field->obj_field_put(_signature_offset, value);
3250 }
3251
3252 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3253 field->obj_field_put(_annotations_offset, value);
3254 }
3255
3256 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3257 // Allocate java.lang.reflect.RecordComponent instance
3258 HandleMark hm(THREAD);
3259 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3260 assert(ik != NULL, "must be loaded");
3261 ik->initialize(CHECK_NULL);
3262
3263 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3264
3265 Handle decl_class(THREAD, holder->java_mirror());
3266 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3267
3268 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3269 oop component_name = StringTable::intern(name, CHECK_NULL);
3270 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3271
3272 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3273 Handle component_type_h =
3274 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3275 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3276
3277 Method* accessor_method = NULL;
3278 {
3279 // Prepend "()" to type to create the full method signature.
3280 ResourceMark rm(THREAD);
3281 int sig_len = type->utf8_length() + 3; // "()" and null char
3282 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3283 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3284 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3285 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3286 }
3287
3288 if (accessor_method != NULL) {
3289 methodHandle method(THREAD, accessor_method);
3290 oop m = Reflection::new_method(method, false, CHECK_NULL);
3291 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3292 } else {
3293 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3294 }
3295
3296 int sig_index = component->generic_signature_index();
3297 if (sig_index > 0) {
3298 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3299 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3300 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3301 } else {
3302 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3303 }
3304
3305 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3306 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3307
3308 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3309 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3310
3311 return element();
3312 }
3313
3314 int reflect_ConstantPool::_oop_offset;
3315
3316 #define CONSTANTPOOL_FIELDS_DO(macro) \
3317 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3318
3319 void reflect_ConstantPool::compute_offsets() {
3320 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3321 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3322 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3323 }
3324
3325 #if INCLUDE_CDS
3326 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3327 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3328 }
3329 #endif
3330
3331 int java_lang_reflect_Parameter::_name_offset;
3332 int java_lang_reflect_Parameter::_modifiers_offset;
3333 int java_lang_reflect_Parameter::_index_offset;
3334 int java_lang_reflect_Parameter::_executable_offset;
3335
3336 #define PARAMETER_FIELDS_DO(macro) \
3337 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3338 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3339 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3340 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3341
3342 void java_lang_reflect_Parameter::compute_offsets() {
3343 InstanceKlass* k = vmClasses::reflect_Parameter_klass();
3344 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3345 }
3346
3347 #if INCLUDE_CDS
3348 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3349 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3350 }
3351 #endif
3352
3353 Handle java_lang_reflect_Parameter::create(TRAPS) {
3354 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3355 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3356 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3357 InstanceKlass* ik = InstanceKlass::cast(k);
3358 // Ensure it is initialized
3359 ik->initialize(CHECK_NH);
3360 return ik->allocate_instance_handle(THREAD);
3361 }
3362
3363 oop java_lang_reflect_Parameter::name(oop param) {
3364 return param->obj_field(_name_offset);
3365 }
3366
3367 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3368 param->obj_field_put(_name_offset, value);
3369 }
3370
3371 int java_lang_reflect_Parameter::modifiers(oop param) {
3372 return param->int_field(_modifiers_offset);
3373 }
3374
3375 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3376 param->int_field_put(_modifiers_offset, value);
3377 }
3378
3379 int java_lang_reflect_Parameter::index(oop param) {
3380 return param->int_field(_index_offset);
3381 }
3382
3383 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3384 param->int_field_put(_index_offset, value);
3385 }
3386
3387 oop java_lang_reflect_Parameter::executable(oop param) {
3388 return param->obj_field(_executable_offset);
3389 }
3390
3391 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3392 param->obj_field_put(_executable_offset, value);
3393 }
3394
3395 // java_lang_Module
3396
3397 int java_lang_Module::_loader_offset;
3398 int java_lang_Module::_name_offset;
3399 int java_lang_Module::_module_entry_offset;
3400
3401 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3402 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3403 return JavaCalls::construct_new_instance(vmClasses::Module_klass(),
3404 vmSymbols::java_lang_module_init_signature(),
3405 loader, module_name, CHECK_NH);
3406 }
3407
3408 #define MODULE_FIELDS_DO(macro) \
3409 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3410 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3411
3412 void java_lang_Module::compute_offsets() {
3413 InstanceKlass* k = vmClasses::Module_klass();
3414 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3415 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3416 }
3417
3418 #if INCLUDE_CDS
3419 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3420 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3421 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3422 }
3423 #endif
3424
3425 oop java_lang_Module::loader(oop module) {
3426 return module->obj_field(_loader_offset);
3427 }
3428
3429 void java_lang_Module::set_loader(oop module, oop value) {
3430 module->obj_field_put(_loader_offset, value);
3431 }
3432
3433 oop java_lang_Module::name(oop module) {
3434 return module->obj_field(_name_offset);
3435 }
3436
3437 void java_lang_Module::set_name(oop module, oop value) {
3438 module->obj_field_put(_name_offset, value);
3439 }
3440
3441 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3442 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3443 assert(module != NULL, "module can't be null");
3444 assert(oopDesc::is_oop(module), "module must be oop");
3445
3446 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3447 return module_entry;
3448 }
3449
3450 ModuleEntry* java_lang_Module::module_entry(oop module) {
3451 ModuleEntry* module_entry = module_entry_raw(module);
3452 if (module_entry == NULL) {
3453 // If the inject field containing the ModuleEntry* is null then return the
3454 // class loader's unnamed module.
3455 oop loader = java_lang_Module::loader(module);
3456 Handle h_loader = Handle(Thread::current(), loader);
3457 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3458 return loader_cld->unnamed_module();
3459 }
3460 return module_entry;
3461 }
3462
3463 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3464 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3465 assert(module != NULL, "module can't be null");
3466 assert(oopDesc::is_oop(module), "module must be oop");
3467 module->address_field_put(_module_entry_offset, (address)module_entry);
3468 }
3469
3470 Handle reflect_ConstantPool::create(TRAPS) {
3471 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3472 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass();
3473 // Ensure it is initialized
3474 k->initialize(CHECK_NH);
3475 return k->allocate_instance_handle(THREAD);
3476 }
3477
3478
3479 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3480 oop mirror = value->pool_holder()->java_mirror();
3481 // Save the mirror to get back the constant pool.
3482 reflect->obj_field_put(_oop_offset, mirror);
3483 }
3484
3485 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3486
3487 oop mirror = reflect->obj_field(_oop_offset);
3488 Klass* k = java_lang_Class::as_Klass(mirror);
3489 assert(k->is_instance_klass(), "Must be");
3490
3491 // Get the constant pool back from the klass. Since class redefinition
3492 // merges the new constant pool into the old, this is essentially the
3493 // same constant pool as the original. If constant pool merging is
3494 // no longer done in the future, this will have to change to save
3495 // the original.
3496 return InstanceKlass::cast(k)->constants();
3497 }
3498
3499 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3500
3501 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3502 macro(_base_offset, k, "base", object_signature, false)
3503
3504 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3505 InstanceKlass* k = vmClasses::reflect_UnsafeStaticFieldAccessorImpl_klass();
3506 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3507 }
3508
3509 #if INCLUDE_CDS
3510 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3511 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3512 }
3513 #endif
3514
3515 // Support for java_lang_ref_Reference
3516
3517 bool java_lang_ref_Reference::_offsets_initialized;
3518
3519 int java_lang_ref_Reference::_referent_offset;
3520 int java_lang_ref_Reference::_queue_offset;
3521 int java_lang_ref_Reference::_next_offset;
3522 int java_lang_ref_Reference::_discovered_offset;
3523
3524 #define REFERENCE_FIELDS_DO(macro) \
3525 macro(_referent_offset, k, "referent", object_signature, false); \
3526 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3527 macro(_next_offset, k, "next", reference_signature, false); \
3528 macro(_discovered_offset, k, "discovered", reference_signature, false);
3529
3530 void java_lang_ref_Reference::compute_offsets() {
3531 if (_offsets_initialized) {
3532 return;
3533 }
3534 _offsets_initialized = true;
3535 InstanceKlass* k = vmClasses::Reference_klass();
3536 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3537 }
3538
3539 #if INCLUDE_CDS
3540 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3541 f->do_bool(&_offsets_initialized);
3542 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3543 }
3544 #endif
3545
3546 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3547 assert(obj != NULL, "sanity");
3548 if (offset != _referent_offset) {
3549 return false;
3550 }
3551
3552 Klass* k = obj->klass();
3553 if (!k->is_instance_klass()) {
3554 return false;
3555 }
3556
3557 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3558 bool is_reference = ik->reference_type() != REF_NONE;
3559 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3560 return is_reference;
3561 }
3562
3563 int java_lang_boxing_object::_value_offset;
3564 int java_lang_boxing_object::_long_value_offset;
3565
3566 #define BOXING_FIELDS_DO(macro) \
3567 macro(_value_offset, integerKlass, "value", int_signature, false); \
3568 macro(_long_value_offset, longKlass, "value", long_signature, false);
3569
3570 void java_lang_boxing_object::compute_offsets() {
3571 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3572 InstanceKlass* longKlass = vmClasses::Long_klass();
3573 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3574 }
3575
3576 #if INCLUDE_CDS
3577 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3578 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3579 }
3580 #endif
3581
3582 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3583 Klass* k = vmClasses::box_klass(type);
3584 if (k == NULL) return NULL;
3585 InstanceKlass* ik = InstanceKlass::cast(k);
3586 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3587 return ik->allocate_instance(THREAD);
3588 }
3589
3590
3591 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3592 oop box = initialize_and_allocate(type, CHECK_NULL);
3593 if (box == NULL) return NULL;
3594 switch (type) {
3595 case T_BOOLEAN:
3596 box->bool_field_put(_value_offset, value->z);
3597 break;
3598 case T_CHAR:
3599 box->char_field_put(_value_offset, value->c);
3600 break;
3601 case T_FLOAT:
3602 box->float_field_put(_value_offset, value->f);
3603 break;
3604 case T_DOUBLE:
3605 box->double_field_put(_long_value_offset, value->d);
3606 break;
3607 case T_BYTE:
3608 box->byte_field_put(_value_offset, value->b);
3609 break;
3610 case T_SHORT:
3611 box->short_field_put(_value_offset, value->s);
3612 break;
3613 case T_INT:
3614 box->int_field_put(_value_offset, value->i);
3615 break;
3616 case T_LONG:
3617 box->long_field_put(_long_value_offset, value->j);
3618 break;
3619 default:
3620 return NULL;
3621 }
3622 return box;
3623 }
3624
3625
3626 BasicType java_lang_boxing_object::basic_type(oop box) {
3627 if (box == NULL) return T_ILLEGAL;
3628 BasicType type = vmClasses::box_klass_type(box->klass());
3629 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3630 return T_ILLEGAL;
3631 return type;
3632 }
3633
3634
3635 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3636 BasicType type = vmClasses::box_klass_type(box->klass());
3637 switch (type) {
3638 case T_BOOLEAN:
3639 value->z = box->bool_field(_value_offset);
3640 break;
3641 case T_CHAR:
3642 value->c = box->char_field(_value_offset);
3643 break;
3644 case T_FLOAT:
3645 value->f = box->float_field(_value_offset);
3646 break;
3647 case T_DOUBLE:
3648 value->d = box->double_field(_long_value_offset);
3649 break;
3650 case T_BYTE:
3651 value->b = box->byte_field(_value_offset);
3652 break;
3653 case T_SHORT:
3654 value->s = box->short_field(_value_offset);
3655 break;
3656 case T_INT:
3657 value->i = box->int_field(_value_offset);
3658 break;
3659 case T_LONG:
3660 value->j = box->long_field(_long_value_offset);
3661 break;
3662 default:
3663 return T_ILLEGAL;
3664 } // end switch
3665 return type;
3666 }
3667
3668
3669 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3670 BasicType type = vmClasses::box_klass_type(box->klass());
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 T_ILLEGAL;
3698 } // end switch
3699 return type;
3700 }
3701
3702
3703 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3704 switch (type) {
3705 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3706 case T_CHAR: st->print("%d", value->c); break;
3707 case T_BYTE: st->print("%d", value->b); break;
3708 case T_SHORT: st->print("%d", value->s); break;
3709 case T_INT: st->print("%d", value->i); break;
3710 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3711 case T_FLOAT: st->print("%f", value->f); break;
3712 case T_DOUBLE: st->print("%lf", value->d); break;
3713 default: st->print("type %d?", type); break;
3714 }
3715 }
3716
3717
3718 // Support for java_lang_ref_SoftReference
3719 //
3720
3721 int java_lang_ref_SoftReference::_timestamp_offset;
3722 int java_lang_ref_SoftReference::_static_clock_offset;
3723
3724 #define SOFTREFERENCE_FIELDS_DO(macro) \
3725 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3726 macro(_static_clock_offset, k, "clock", long_signature, true)
3727
3728 void java_lang_ref_SoftReference::compute_offsets() {
3729 InstanceKlass* k = vmClasses::SoftReference_klass();
3730 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3731 }
3732
3733 #if INCLUDE_CDS
3734 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3735 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3736 }
3737 #endif
3738
3739 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3740 return ref->long_field(_timestamp_offset);
3741 }
3742
3743 jlong java_lang_ref_SoftReference::clock() {
3744 InstanceKlass* ik = vmClasses::SoftReference_klass();
3745 oop base = ik->static_field_base_raw();
3746 return base->long_field(_static_clock_offset);
3747 }
3748
3749 void java_lang_ref_SoftReference::set_clock(jlong value) {
3750 InstanceKlass* ik = vmClasses::SoftReference_klass();
3751 oop base = ik->static_field_base_raw();
3752 base->long_field_put(_static_clock_offset, value);
3753 }
3754
3755 // Support for java_lang_invoke_DirectMethodHandle
3756
3757 int java_lang_invoke_DirectMethodHandle::_member_offset;
3758
3759 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3760 oop member_name = NULL;
3761 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3762 "a DirectMethodHandle oop is expected");
3763 return dmh->obj_field(_member_offset);
3764 }
3765
3766 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3767 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3768
3769 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3770 InstanceKlass* k = vmClasses::DirectMethodHandle_klass();
3771 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3772 }
3773
3774 #if INCLUDE_CDS
3775 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3776 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3777 }
3778 #endif
3779
3780 // Support for java_lang_invoke_MethodHandle
3781
3782 int java_lang_invoke_MethodHandle::_type_offset;
3783 int java_lang_invoke_MethodHandle::_form_offset;
3784
3785 int java_lang_invoke_MemberName::_clazz_offset;
3786 int java_lang_invoke_MemberName::_name_offset;
3787 int java_lang_invoke_MemberName::_type_offset;
3788 int java_lang_invoke_MemberName::_flags_offset;
3789 int java_lang_invoke_MemberName::_method_offset;
3790 int java_lang_invoke_MemberName::_vmindex_offset;
3791
3792 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3793 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3794
3795 int java_lang_invoke_LambdaForm::_vmentry_offset;
3796
3797 #define METHODHANDLE_FIELDS_DO(macro) \
3798 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3799 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3800
3801 void java_lang_invoke_MethodHandle::compute_offsets() {
3802 InstanceKlass* k = vmClasses::MethodHandle_klass();
3803 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3804 }
3805
3806 #if INCLUDE_CDS
3807 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3808 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3809 }
3810 #endif
3811
3812 #define MEMBERNAME_FIELDS_DO(macro) \
3813 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3814 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3815 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3816 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3817 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3818
3819 void java_lang_invoke_MemberName::compute_offsets() {
3820 InstanceKlass* k = vmClasses::MemberName_klass();
3821 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3822 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3823 }
3824
3825 #if INCLUDE_CDS
3826 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3827 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3828 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3829 }
3830 #endif
3831
3832 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3833 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
3834 assert(k != NULL, "jdk mismatch");
3835 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3836 }
3837
3838 #if INCLUDE_CDS
3839 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3840 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3841 }
3842 #endif
3843
3844 #define LAMBDAFORM_FIELDS_DO(macro) \
3845 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3846
3847 void java_lang_invoke_LambdaForm::compute_offsets() {
3848 InstanceKlass* k = vmClasses::LambdaForm_klass();
3849 assert (k != NULL, "jdk mismatch");
3850 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3851 }
3852
3853 #if INCLUDE_CDS
3854 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3855 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3856 }
3857 #endif
3858
3859 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3860 return obj != NULL && is_subclass(obj->klass());
3861 }
3862
3863 int jdk_internal_invoke_NativeEntryPoint::_shadow_space_offset;
3864 int jdk_internal_invoke_NativeEntryPoint::_argMoves_offset;
3865 int jdk_internal_invoke_NativeEntryPoint::_returnMoves_offset;
3866 int jdk_internal_invoke_NativeEntryPoint::_need_transition_offset;
3867 int jdk_internal_invoke_NativeEntryPoint::_method_type_offset;
3868 int jdk_internal_invoke_NativeEntryPoint::_name_offset;
3869 int jdk_internal_invoke_NativeEntryPoint::_invoker_offset;
3870
3871 #define NEP_FIELDS_DO(macro) \
3872 macro(_shadow_space_offset, k, "shadowSpace", int_signature, false); \
3873 macro(_argMoves_offset, k, "argMoves", long_array_signature, false); \
3874 macro(_returnMoves_offset, k, "returnMoves", long_array_signature, false); \
3875 macro(_need_transition_offset, k, "needTransition", bool_signature, false); \
3876 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \
3877 macro(_name_offset, k, "name", string_signature, false); \
3878 macro(_invoker_offset, k, "invoker", long_signature, false);
3879
3880 bool jdk_internal_invoke_NativeEntryPoint::is_instance(oop obj) {
3881 return obj != NULL && is_subclass(obj->klass());
3882 }
3883
3884 void jdk_internal_invoke_NativeEntryPoint::compute_offsets() {
3885 InstanceKlass* k = vmClasses::NativeEntryPoint_klass();
3886 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3887 }
3888
3889 #if INCLUDE_CDS
3890 void jdk_internal_invoke_NativeEntryPoint::serialize_offsets(SerializeClosure* f) {
3891 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3892 }
3893 #endif
3894
3895 jint jdk_internal_invoke_NativeEntryPoint::shadow_space(oop entry) {
3896 return entry->int_field(_shadow_space_offset);
3897 }
3898
3899 oop jdk_internal_invoke_NativeEntryPoint::argMoves(oop entry) {
3900 return entry->obj_field(_argMoves_offset);
3901 }
3902
3903 oop jdk_internal_invoke_NativeEntryPoint::returnMoves(oop entry) {
3904 return entry->obj_field(_returnMoves_offset);
3905 }
3906
3907 jboolean jdk_internal_invoke_NativeEntryPoint::need_transition(oop entry) {
3908 return entry->bool_field(_need_transition_offset);
3909 }
3910
3911 oop jdk_internal_invoke_NativeEntryPoint::method_type(oop entry) {
3912 return entry->obj_field(_method_type_offset);
3913 }
3914
3915 oop jdk_internal_invoke_NativeEntryPoint::name(oop entry) {
3916 return entry->obj_field(_name_offset);
3917 }
3918
3919 jlong jdk_internal_invoke_NativeEntryPoint::invoker(oop entry) {
3920 return entry->long_field(_invoker_offset);
3921 }
3922
3923 oop java_lang_invoke_MethodHandle::type(oop mh) {
3924 return mh->obj_field(_type_offset);
3925 }
3926
3927 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3928 mh->obj_field_put(_type_offset, mtype);
3929 }
3930
3931 oop java_lang_invoke_MethodHandle::form(oop mh) {
3932 assert(_form_offset != 0, "");
3933 return mh->obj_field(_form_offset);
3934 }
3935
3936 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3937 assert(_form_offset != 0, "");
3938 mh->obj_field_put(_form_offset, lform);
3939 }
3940
3941 /// MemberName accessors
3942
3943 oop java_lang_invoke_MemberName::clazz(oop mname) {
3944 assert(is_instance(mname), "wrong type");
3945 return mname->obj_field(_clazz_offset);
3946 }
3947
3948 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3949 assert(is_instance(mname), "wrong type");
3950 mname->obj_field_put(_clazz_offset, clazz);
3951 }
3952
3953 oop java_lang_invoke_MemberName::name(oop mname) {
3954 assert(is_instance(mname), "wrong type");
3955 return mname->obj_field(_name_offset);
3956 }
3957
3958 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3959 assert(is_instance(mname), "wrong type");
3960 mname->obj_field_put(_name_offset, name);
3961 }
3962
3963 oop java_lang_invoke_MemberName::type(oop mname) {
3964 assert(is_instance(mname), "wrong type");
3965 return mname->obj_field(_type_offset);
3966 }
3967
3968 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3969 assert(is_instance(mname), "wrong type");
3970 mname->obj_field_put(_type_offset, type);
3971 }
3972
3973 int java_lang_invoke_MemberName::flags(oop mname) {
3974 assert(is_instance(mname), "wrong type");
3975 return mname->int_field(_flags_offset);
3976 }
3977
3978 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3979 assert(is_instance(mname), "wrong type");
3980 mname->int_field_put(_flags_offset, flags);
3981 }
3982
3983
3984 // Return vmtarget from ResolvedMethodName method field through indirection
3985 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3986 assert(is_instance(mname), "wrong type");
3987 oop method = mname->obj_field(_method_offset);
3988 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3989 }
3990
3991 bool java_lang_invoke_MemberName::is_method(oop mname) {
3992 assert(is_instance(mname), "must be MemberName");
3993 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3994 }
3995
3996 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3997 assert(is_instance(mname), "wrong type");
3998 mname->obj_field_put(_method_offset, resolved_method);
3999 }
4000
4001 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4002 assert(is_instance(mname), "wrong type");
4003 return (intptr_t) mname->address_field(_vmindex_offset);
4004 }
4005
4006 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4007 assert(is_instance(mname), "wrong type");
4008 mname->address_field_put(_vmindex_offset, (address) index);
4009 }
4010
4011
4012 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4013 assert(is_instance(resolved_method), "wrong type");
4014 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
4015 assert(m->is_method(), "must be");
4016 return m;
4017 }
4018
4019 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
4020 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
4021 assert(is_instance(resolved_method), "wrong type");
4022 resolved_method->address_field_put(_vmtarget_offset, (address)m);
4023 }
4024
4025 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
4026 assert(is_instance(resolved_method), "wrong type");
4027 resolved_method->obj_field_put(_vmholder_offset, holder);
4028 }
4029
4030 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
4031 const Method* method = m();
4032
4033 // lookup ResolvedMethod oop in the table, or create a new one and intern it
4034 oop resolved_method = ResolvedMethodTable::find_method(method);
4035 if (resolved_method != NULL) {
4036 return resolved_method;
4037 }
4038
4039 InstanceKlass* k = vmClasses::ResolvedMethodName_klass();
4040 if (!k->is_initialized()) {
4041 k->initialize(CHECK_NULL);
4042 }
4043
4044 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
4045
4046 NoSafepointVerifier nsv;
4047
4048 if (method->is_old()) {
4049 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
4050 method->get_new_method();
4051 }
4052
4053 InstanceKlass* holder = method->method_holder();
4054
4055 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
4056 // Add a reference to the loader (actually mirror because hidden classes may not have
4057 // distinct loaders) to ensure the metadata is kept alive.
4058 // This mirror may be different than the one in clazz field.
4059 set_vmholder(new_resolved_method, holder->java_mirror());
4060
4061 // Set flag in class to indicate this InstanceKlass has entries in the table
4062 // to avoid walking table during redefinition if none of the redefined classes
4063 // have any membernames in the table.
4064 holder->set_has_resolved_methods();
4065
4066 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
4067 }
4068
4069 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
4070 assert(is_instance(lform), "wrong type");
4071 return lform->obj_field(_vmentry_offset);
4072 }
4073
4074
4075 // Support for java_lang_invoke_MethodType
4076
4077 int java_lang_invoke_MethodType::_rtype_offset;
4078 int java_lang_invoke_MethodType::_ptypes_offset;
4079
4080 #define METHODTYPE_FIELDS_DO(macro) \
4081 macro(_rtype_offset, k, "rtype", class_signature, false); \
4082 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4083
4084 void java_lang_invoke_MethodType::compute_offsets() {
4085 InstanceKlass* k = vmClasses::MethodType_klass();
4086 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4087 }
4088
4089 #if INCLUDE_CDS
4090 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4091 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4092 }
4093 #endif
4094
4095 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4096 st->print("(");
4097 objArrayOop pts = ptypes(mt);
4098 if (pts != NULL) {
4099 for (int i = 0, limit = pts->length(); i < limit; i++) {
4100 java_lang_Class::print_signature(pts->obj_at(i), st);
4101 }
4102 } else {
4103 st->print("NULL");
4104 }
4105 st->print(")");
4106 oop rt = rtype(mt);
4107 if (rt != NULL) {
4108 java_lang_Class::print_signature(rt, st);
4109 } else {
4110 st->print("NULL");
4111 }
4112 }
4113
4114 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4115 ResourceMark rm;
4116 stringStream buffer(128);
4117 print_signature(mt, &buffer);
4118 const char* sigstr = buffer.base();
4119 int siglen = (int) buffer.size();
4120 Symbol *name;
4121 if (!intern_if_not_found) {
4122 name = SymbolTable::probe(sigstr, siglen);
4123 } else {
4124 name = SymbolTable::new_symbol(sigstr, siglen);
4125 }
4126 return name;
4127 }
4128
4129 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4130 if (mt1 == mt2)
4131 return true;
4132 if (rtype(mt1) != rtype(mt2))
4133 return false;
4134 if (ptype_count(mt1) != ptype_count(mt2))
4135 return false;
4136 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4137 if (ptype(mt1, i) != ptype(mt2, i))
4138 return false;
4139 }
4140 return true;
4141 }
4142
4143 oop java_lang_invoke_MethodType::rtype(oop mt) {
4144 assert(is_instance(mt), "must be a MethodType");
4145 return mt->obj_field(_rtype_offset);
4146 }
4147
4148 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4149 assert(is_instance(mt), "must be a MethodType");
4150 return (objArrayOop) mt->obj_field(_ptypes_offset);
4151 }
4152
4153 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4154 return ptypes(mt)->obj_at(idx);
4155 }
4156
4157 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4158 return ptypes(mt)->length();
4159 }
4160
4161 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4162 objArrayOop pts = ptypes(mt);
4163 int count = pts->length();
4164 int slots = 0;
4165 for (int i = 0; i < count; i++) {
4166 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4167 slots += type2size[bt];
4168 }
4169 return slots;
4170 }
4171
4172 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4173 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4174 return type2size[bt];
4175 }
4176
4177
4178 // Support for java_lang_invoke_CallSite
4179
4180 int java_lang_invoke_CallSite::_target_offset;
4181 int java_lang_invoke_CallSite::_context_offset;
4182
4183 #define CALLSITE_FIELDS_DO(macro) \
4184 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4185 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4186
4187 void java_lang_invoke_CallSite::compute_offsets() {
4188 InstanceKlass* k = vmClasses::CallSite_klass();
4189 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4190 }
4191
4192 #if INCLUDE_CDS
4193 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4194 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4195 }
4196 #endif
4197
4198 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4199 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4200
4201 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4202 return dep_oop;
4203 }
4204
4205 // Support for java_lang_invoke_ConstantCallSite
4206
4207 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4208
4209 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4210 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4211
4212 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4213 InstanceKlass* k = vmClasses::ConstantCallSite_klass();
4214 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4215 }
4216
4217 #if INCLUDE_CDS
4218 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4219 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4220 }
4221 #endif
4222
4223 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4224
4225 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4226 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4227
4228 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4229 InstanceKlass* k = vmClasses::Context_klass();
4230 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4231 }
4232
4233 #if INCLUDE_CDS
4234 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4235 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4236 }
4237 #endif
4238
4239 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4240 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4241 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset);
4242 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset);
4243 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4244 return dep_ctx;
4245 }
4246
4247 // Support for java_security_AccessControlContext
4248
4249 int java_security_AccessControlContext::_context_offset;
4250 int java_security_AccessControlContext::_privilegedContext_offset;
4251 int java_security_AccessControlContext::_isPrivileged_offset;
4252 int java_security_AccessControlContext::_isAuthorized_offset;
4253
4254 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4255 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4256 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4257 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4258 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4259
4260 void java_security_AccessControlContext::compute_offsets() {
4261 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4262 InstanceKlass* k = vmClasses::AccessControlContext_klass();
4263 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4264 }
4265
4266 #if INCLUDE_CDS
4267 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4268 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4269 }
4270 #endif
4271
4272 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4273 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4274 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4275 // Ensure klass is initialized
4276 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL);
4277 // Allocate result
4278 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4279 // Fill in values
4280 result->obj_field_put(_context_offset, context());
4281 result->obj_field_put(_privilegedContext_offset, privileged_context());
4282 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4283 result->bool_field_put(_isAuthorized_offset, true);
4284 return result;
4285 }
4286
4287
4288 // Support for java_lang_ClassLoader
4289
4290 int java_lang_ClassLoader::_loader_data_offset;
4291 int java_lang_ClassLoader::_parallelCapable_offset;
4292 int java_lang_ClassLoader::_name_offset;
4293 int java_lang_ClassLoader::_nameAndId_offset;
4294 int java_lang_ClassLoader::_unnamedModule_offset;
4295 int java_lang_ClassLoader::_parent_offset;
4296
4297 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4298 assert(loader != NULL, "loader must not be NULL");
4299 assert(oopDesc::is_oop(loader), "loader must be oop");
4300 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset));
4301 }
4302
4303 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4304 assert(loader != NULL, "loader must not be NULL");
4305 assert(oopDesc::is_oop(loader), "loader must be oop");
4306 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset);
4307 }
4308
4309 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4310 assert(loader != NULL, "loader must not be NULL");
4311 assert(oopDesc::is_oop(loader), "loader must be oop");
4312 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data);
4313 }
4314
4315 #define CLASSLOADER_FIELDS_DO(macro) \
4316 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4317 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4318 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4319 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4320 macro(_parent_offset, k1, "parent", classloader_signature, false)
4321
4322 void java_lang_ClassLoader::compute_offsets() {
4323 InstanceKlass* k1 = vmClasses::ClassLoader_klass();
4324 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4325
4326 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4327 }
4328
4329 #if INCLUDE_CDS
4330 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4331 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4332 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4333 }
4334 #endif
4335
4336 oop java_lang_ClassLoader::parent(oop loader) {
4337 assert(is_instance(loader), "loader must be oop");
4338 return loader->obj_field(_parent_offset);
4339 }
4340
4341 // Returns the name field of this class loader. If the name field has not
4342 // been set, null will be returned.
4343 oop java_lang_ClassLoader::name(oop loader) {
4344 assert(is_instance(loader), "loader must be oop");
4345 return loader->obj_field(_name_offset);
4346 }
4347
4348 // Returns the nameAndId field of this class loader. The format is
4349 // as follows:
4350 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4351 // If the defining loader has no name then <qualified-class-name> @<id>
4352 // If built-in loader, then omit '@<id>' as there is only one instance.
4353 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4354 oop java_lang_ClassLoader::nameAndId(oop loader) {
4355 assert(is_instance(loader), "loader must be oop");
4356 return loader->obj_field(_nameAndId_offset);
4357 }
4358
4359 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4360 assert(is_instance(loader), "loader must be oop");
4361 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4362 oop acl = loader;
4363 debug_only(jint loop_count = 0);
4364 // This loop taken verbatim from ClassLoader.java:
4365 do {
4366 acl = parent(acl);
4367 if (cl == acl) {
4368 return true;
4369 }
4370 assert(++loop_count > 0, "loop_count overflow");
4371 } while (acl != NULL);
4372 return false;
4373 }
4374
4375 bool java_lang_ClassLoader::is_instance(oop obj) {
4376 return obj != NULL && is_subclass(obj->klass());
4377 }
4378
4379
4380 // For class loader classes, parallelCapable defined
4381 // based on non-null field
4382 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4383 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4384 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4385 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4386 }
4387
4388 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4389 // Fix for 4474172; see evaluation for more details
4390 loader = non_reflection_class_loader(loader);
4391
4392 oop cl = SystemDictionary::java_system_loader();
4393 while(cl != NULL) {
4394 if (cl == loader) return true;
4395 cl = parent(cl);
4396 }
4397 return false;
4398 }
4399
4400 // Return true if this is one of the class loaders associated with
4401 // the generated bytecodes for reflection.
4402 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4403 if (loader != NULL) {
4404 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass();
4405 // This might be null in non-1.4 JDKs
4406 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4407 }
4408 return false;
4409 }
4410
4411 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4412 // See whether this is one of the class loaders associated with
4413 // the generated bytecodes for reflection, and if so, "magically"
4414 // delegate to its parent to prevent class loading from occurring
4415 // in places where applications using reflection didn't expect it.
4416 if (is_reflection_class_loader(loader)) {
4417 return parent(loader);
4418 }
4419 return loader;
4420 }
4421
4422 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4423 assert(is_instance(loader), "loader must be oop");
4424 return loader->obj_field(_unnamedModule_offset);
4425 }
4426
4427 // Support for java_lang_System
4428 //
4429
4430 int java_lang_System::_static_in_offset;
4431 int java_lang_System::_static_out_offset;
4432 int java_lang_System::_static_err_offset;
4433 int java_lang_System::_static_security_offset;
4434 int java_lang_System::_static_allow_security_offset;
4435 int java_lang_System::_static_never_offset;
4436
4437 #define SYSTEM_FIELDS_DO(macro) \
4438 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4439 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4440 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4441 macro(_static_security_offset, k, "security", security_manager_signature, true); \
4442 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \
4443 macro(_static_never_offset, k, "NEVER", int_signature, true)
4444
4445 void java_lang_System::compute_offsets() {
4446 InstanceKlass* k = vmClasses::System_klass();
4447 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4448 }
4449
4450 // This field tells us that a security manager can never be installed so we
4451 // can completely skip populating the ProtectionDomainCacheTable.
4452 bool java_lang_System::allow_security_manager() {
4453 static int initialized = false;
4454 static bool allowed = true; // default
4455 if (!initialized) {
4456 oop base = vmClasses::System_klass()->static_field_base_raw();
4457 int never = base->int_field(_static_never_offset);
4458 allowed = (base->int_field(_static_allow_security_offset) != never);
4459 initialized = true;
4460 }
4461 return allowed;
4462 }
4463
4464 // This field tells us that a security manager is installed.
4465 bool java_lang_System::has_security_manager() {
4466 oop base = vmClasses::System_klass()->static_field_base_raw();
4467 return base->obj_field(_static_security_offset) != NULL;
4468 }
4469
4470 #if INCLUDE_CDS
4471 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4472 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4473 }
4474 #endif
4475
4476 // Support for jdk_internal_misc_UnsafeConstants
4477 //
4478 class UnsafeConstantsFixup : public FieldClosure {
4479 private:
4480 int _address_size;
4481 int _page_size;
4482 bool _big_endian;
4483 bool _use_unaligned_access;
4484 int _data_cache_line_flush_size;
4485 public:
4486 UnsafeConstantsFixup() {
4487 // round up values for all static final fields
4488 _address_size = sizeof(void*);
4489 _page_size = os::vm_page_size();
4490 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4491 _use_unaligned_access = UseUnalignedAccesses;
4492 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4493 }
4494
4495 void do_field(fieldDescriptor* fd) {
4496 oop mirror = fd->field_holder()->java_mirror();
4497 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4498 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants");
4499 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4500 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4501 if (fd->name() == vmSymbols::address_size_name()) {
4502 mirror->int_field_put(fd->offset(), _address_size);
4503 } else if (fd->name() == vmSymbols::page_size_name()) {
4504 mirror->int_field_put(fd->offset(), _page_size);
4505 } else if (fd->name() == vmSymbols::big_endian_name()) {
4506 mirror->bool_field_put(fd->offset(), _big_endian);
4507 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4508 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4509 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4510 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4511 } else {
4512 assert(false, "unexpected UnsafeConstants field");
4513 }
4514 }
4515 };
4516
4517 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4518 UnsafeConstantsFixup fixup;
4519 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4520 }
4521
4522
4523 // java_lang_StackTraceElement
4524
4525 int java_lang_StackTraceElement::_methodName_offset;
4526 int java_lang_StackTraceElement::_fileName_offset;
4527 int java_lang_StackTraceElement::_lineNumber_offset;
4528 int java_lang_StackTraceElement::_moduleName_offset;
4529 int java_lang_StackTraceElement::_moduleVersion_offset;
4530 int java_lang_StackTraceElement::_classLoaderName_offset;
4531 int java_lang_StackTraceElement::_declaringClass_offset;
4532 int java_lang_StackTraceElement::_declaringClassObject_offset;
4533
4534 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4535 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4536 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4537 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4538 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4539 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4540 macro(_methodName_offset, k, "methodName", string_signature, false); \
4541 macro(_fileName_offset, k, "fileName", string_signature, false); \
4542 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4543
4544 // Support for java_lang_StackTraceElement
4545 void java_lang_StackTraceElement::compute_offsets() {
4546 InstanceKlass* k = vmClasses::StackTraceElement_klass();
4547 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4548 }
4549
4550 #if INCLUDE_CDS
4551 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4552 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4553 }
4554 #endif
4555
4556 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4557 element->obj_field_put(_fileName_offset, value);
4558 }
4559
4560 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4561 element->obj_field_put(_declaringClass_offset, value);
4562 }
4563
4564 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4565 element->obj_field_put(_methodName_offset, value);
4566 }
4567
4568 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4569 element->int_field_put(_lineNumber_offset, value);
4570 }
4571
4572 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4573 element->obj_field_put(_moduleName_offset, value);
4574 }
4575
4576 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4577 element->obj_field_put(_moduleVersion_offset, value);
4578 }
4579
4580 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4581 element->obj_field_put(_classLoaderName_offset, value);
4582 }
4583
4584 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4585 element->obj_field_put(_declaringClassObject_offset, value);
4586 }
4587
4588
4589 // java_lang_AssertionStatusDirectives
4590
4591 int java_lang_AssertionStatusDirectives::_classes_offset;
4592 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4593 int java_lang_AssertionStatusDirectives::_packages_offset;
4594 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4595 int java_lang_AssertionStatusDirectives::_deflt_offset;
4596
4597 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4598 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4599 macro(_classes_offset, k, "classes", string_array_signature, false); \
4600 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4601 macro(_packages_offset, k, "packages", string_array_signature, false); \
4602 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4603 macro(_deflt_offset, k, "deflt", bool_signature, false)
4604
4605 void java_lang_AssertionStatusDirectives::compute_offsets() {
4606 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass();
4607 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4608 }
4609
4610 #if INCLUDE_CDS
4611 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4612 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4613 }
4614 #endif
4615
4616 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4617 o->obj_field_put(_classes_offset, val);
4618 }
4619
4620 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4621 o->obj_field_put(_classEnabled_offset, val);
4622 }
4623
4624 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4625 o->obj_field_put(_packages_offset, val);
4626 }
4627
4628 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4629 o->obj_field_put(_packageEnabled_offset, val);
4630 }
4631
4632 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4633 o->bool_field_put(_deflt_offset, val);
4634 }
4635
4636 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4637
4638 #define AOS_FIELDS_DO(macro) \
4639 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4640
4641 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4642 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4643 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4644 }
4645
4646 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4647 assert(_owner_offset != 0, "Must be initialized");
4648 return obj->obj_field(_owner_offset);
4649 }
4650
4651 #if INCLUDE_CDS
4652 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4653 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4654 }
4655 #endif
4656
4657 int vector_VectorPayload::_payload_offset;
4658
4659 #define VECTORPAYLOAD_FIELDS_DO(macro) \
4660 macro(_payload_offset, k, "payload", object_signature, false)
4661
4662 void vector_VectorPayload::compute_offsets() {
4663 InstanceKlass* k = vmClasses::vector_VectorPayload_klass();
4664 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4665 }
4666
4667 #if INCLUDE_CDS
4668 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) {
4669 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4670 }
4671 #endif
4672
4673 void vector_VectorPayload::set_payload(oop o, oop val) {
4674 o->obj_field_put(_payload_offset, val);
4675 }
4676
4677 bool vector_VectorPayload::is_instance(oop obj) {
4678 return obj != NULL && is_subclass(obj->klass());
4679 }
4680
4681 int java_lang_Integer_IntegerCache::_static_cache_offset;
4682 int java_lang_Long_LongCache::_static_cache_offset;
4683 int java_lang_Character_CharacterCache::_static_cache_offset;
4684 int java_lang_Short_ShortCache::_static_cache_offset;
4685 int java_lang_Byte_ByteCache::_static_cache_offset;
4686
4687 #define INTEGER_CACHE_FIELDS_DO(macro) \
4688 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4689
4690 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4691 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4692 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4693 }
4694
4695 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4696 oop base = ik->static_field_base_raw();
4697 return objArrayOop(base->obj_field(_static_cache_offset));
4698 }
4699
4700 Symbol* java_lang_Integer_IntegerCache::symbol() {
4701 return vmSymbols::java_lang_Integer_IntegerCache();
4702 }
4703
4704 #if INCLUDE_CDS
4705 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4706 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4707 }
4708 #endif
4709 #undef INTEGER_CACHE_FIELDS_DO
4710
4711 jint java_lang_Integer::value(oop obj) {
4712 jvalue v;
4713 java_lang_boxing_object::get_value(obj, &v);
4714 return v.i;
4715 }
4716
4717 #define LONG_CACHE_FIELDS_DO(macro) \
4718 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4719
4720 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4721 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4722 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4723 }
4724
4725 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4726 oop base = ik->static_field_base_raw();
4727 return objArrayOop(base->obj_field(_static_cache_offset));
4728 }
4729
4730 Symbol* java_lang_Long_LongCache::symbol() {
4731 return vmSymbols::java_lang_Long_LongCache();
4732 }
4733
4734 #if INCLUDE_CDS
4735 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4736 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4737 }
4738 #endif
4739 #undef LONG_CACHE_FIELDS_DO
4740
4741 jlong java_lang_Long::value(oop obj) {
4742 jvalue v;
4743 java_lang_boxing_object::get_value(obj, &v);
4744 return v.j;
4745 }
4746
4747 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4748 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4749
4750 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4751 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4752 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4753 }
4754
4755 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4756 oop base = ik->static_field_base_raw();
4757 return objArrayOop(base->obj_field(_static_cache_offset));
4758 }
4759
4760 Symbol* java_lang_Character_CharacterCache::symbol() {
4761 return vmSymbols::java_lang_Character_CharacterCache();
4762 }
4763
4764 #if INCLUDE_CDS
4765 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4766 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4767 }
4768 #endif
4769 #undef CHARACTER_CACHE_FIELDS_DO
4770
4771 jchar java_lang_Character::value(oop obj) {
4772 jvalue v;
4773 java_lang_boxing_object::get_value(obj, &v);
4774 return v.c;
4775 }
4776
4777 #define SHORT_CACHE_FIELDS_DO(macro) \
4778 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4779
4780 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4781 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4782 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4783 }
4784
4785 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4786 oop base = ik->static_field_base_raw();
4787 return objArrayOop(base->obj_field(_static_cache_offset));
4788 }
4789
4790 Symbol* java_lang_Short_ShortCache::symbol() {
4791 return vmSymbols::java_lang_Short_ShortCache();
4792 }
4793
4794 #if INCLUDE_CDS
4795 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4796 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4797 }
4798 #endif
4799 #undef SHORT_CACHE_FIELDS_DO
4800
4801 jshort java_lang_Short::value(oop obj) {
4802 jvalue v;
4803 java_lang_boxing_object::get_value(obj, &v);
4804 return v.s;
4805 }
4806
4807 #define BYTE_CACHE_FIELDS_DO(macro) \
4808 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4809
4810 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4811 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4812 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4813 }
4814
4815 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4816 oop base = ik->static_field_base_raw();
4817 return objArrayOop(base->obj_field(_static_cache_offset));
4818 }
4819
4820 Symbol* java_lang_Byte_ByteCache::symbol() {
4821 return vmSymbols::java_lang_Byte_ByteCache();
4822 }
4823
4824 #if INCLUDE_CDS
4825 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4826 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4827 }
4828 #endif
4829 #undef BYTE_CACHE_FIELDS_DO
4830
4831 jbyte java_lang_Byte::value(oop obj) {
4832 jvalue v;
4833 java_lang_boxing_object::get_value(obj, &v);
4834 return v.b;
4835 }
4836
4837 int java_lang_Boolean::_static_TRUE_offset;
4838 int java_lang_Boolean::_static_FALSE_offset;
4839
4840 #define BOOLEAN_FIELDS_DO(macro) \
4841 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4842 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4843
4844
4845 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4846 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4847 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4848 }
4849
4850 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4851 oop base = ik->static_field_base_raw();
4852 return base->obj_field(_static_TRUE_offset);
4853 }
4854
4855 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4856 oop base = ik->static_field_base_raw();
4857 return base->obj_field(_static_FALSE_offset);
4858 }
4859
4860 Symbol* java_lang_Boolean::symbol() {
4861 return vmSymbols::java_lang_Boolean();
4862 }
4863
4864 #if INCLUDE_CDS
4865 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4866 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4867 }
4868 #endif
4869 #undef BOOLEAN_CACHE_FIELDS_DO
4870
4871 jboolean java_lang_Boolean::value(oop obj) {
4872 jvalue v;
4873 java_lang_boxing_object::get_value(obj, &v);
4874 return v.z;
4875 }
4876
4877 // java_lang_reflect_RecordComponent
4878
4879 int java_lang_reflect_RecordComponent::_clazz_offset;
4880 int java_lang_reflect_RecordComponent::_name_offset;
4881 int java_lang_reflect_RecordComponent::_type_offset;
4882 int java_lang_reflect_RecordComponent::_accessor_offset;
4883 int java_lang_reflect_RecordComponent::_signature_offset;
4884 int java_lang_reflect_RecordComponent::_annotations_offset;
4885 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4886
4887 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4888 macro(_clazz_offset, k, "clazz", class_signature, false); \
4889 macro(_name_offset, k, "name", string_signature, false); \
4890 macro(_type_offset, k, "type", class_signature, false); \
4891 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4892 macro(_signature_offset, k, "signature", string_signature, false); \
4893 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4894 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4895
4896 // Support for java_lang_reflect_RecordComponent
4897 void java_lang_reflect_RecordComponent::compute_offsets() {
4898 InstanceKlass* k = vmClasses::RecordComponent_klass();
4899 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4900 }
4901
4902 #if INCLUDE_CDS
4903 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4904 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4905 }
4906 #endif
4907
4908 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4909 element->obj_field_put(_clazz_offset, value);
4910 }
4911
4912 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4913 element->obj_field_put(_name_offset, value);
4914 }
4915
4916 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4917 element->obj_field_put(_type_offset, value);
4918 }
4919
4920 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4921 element->obj_field_put(_accessor_offset, value);
4922 }
4923
4924 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4925 element->obj_field_put(_signature_offset, value);
4926 }
4927
4928 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4929 element->obj_field_put(_annotations_offset, value);
4930 }
4931
4932 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4933 element->obj_field_put(_typeAnnotations_offset, value);
4934 }
4935
4936 // java_lang_InternalError
4937 int java_lang_InternalError::_during_unsafe_access_offset;
4938
4939 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
4940 internal_error->bool_field_put(_during_unsafe_access_offset, true);
4941 }
4942
4943 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
4944 return internal_error->bool_field(_during_unsafe_access_offset);
4945 }
4946
4947 void java_lang_InternalError::compute_offsets() {
4948 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4949 }
4950
4951 #if INCLUDE_CDS
4952 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
4953 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4954 }
4955 #endif
4956
4957 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4958
4959 // Compute field offsets of all the classes in this file
4960 void JavaClasses::compute_offsets() {
4961 if (UseSharedSpaces) {
4962 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4963 JvmtiExport::has_early_class_hook_env()),
4964 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4965 // None of the classes used by the rest of this function can be replaced by
4966 // JVMTI ClassFileLoadHook.
4967 // We are safe to use the archived offsets, which have already been restored
4968 // by JavaClasses::serialize_offsets, without computing the offsets again.
4969 return;
4970 }
4971
4972 // We have already called the compute_offsets() of the
4973 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
4974 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all()
4975 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4976 }
4977
4978 #if INCLUDE_CDS
4979 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4980
4981 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4982 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4983 }
4984 #endif
4985
4986 #if INCLUDE_CDS_JAVA_HEAP
4987 bool JavaClasses::is_supported_for_archiving(oop obj) {
4988 Klass* klass = obj->klass();
4989
4990 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4991 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4992 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes
4993 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4994 // So for now we cannot not support these classes for archiving.
4995 //
4996 // These objects typically are not referenced by static fields, but rather by resolved
4997 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4998 klass == vmClasses::ResolvedMethodName_klass() ||
4999 klass == vmClasses::MemberName_klass() ||
5000 klass == vmClasses::Context_klass() ||
5001 // It's problematic to archive Reference objects. One of the reasons is that
5002 // Reference::discovered may pull in unwanted objects (see JDK-8284336)
5003 klass->is_subclass_of(vmClasses::Reference_klass())) {
5004 return false;
5005 }
5006
5007 return true;
5008 }
5009 #endif
5010
5011 #ifndef PRODUCT
5012
5013 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
5014
5015 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
5016 const char* field_sig) {
5017 EXCEPTION_MARK;
5018 fieldDescriptor fd;
5019 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
5020 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
5021 InstanceKlass* ik = InstanceKlass::cast(k);
5022 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
5023 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
5024 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5025 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5026 return false;
5027 }
5028 if (fd.is_static()) {
5029 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5030 return false;
5031 }
5032 if (fd.offset() == deserialized_offset ) {
5033 return true;
5034 } else {
5035 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5036 klass_name, field_name, deserialized_offset, fd.offset());
5037 return false;
5038 }
5039 }
5040
5041 void JavaClasses::check_offsets() {
5042 bool valid = true;
5043
5044 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5045 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5046
5047 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5048 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5049
5050 // Boxed primitive objects (java_lang_boxing_object)
5051
5052 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5053 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5054 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5055 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5056 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5057 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5058 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5059 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5060
5061 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5062 }
5063
5064 #endif // PRODUCT
5065
5066 int InjectedField::compute_offset() {
5067 InstanceKlass* ik = InstanceKlass::cast(klass());
5068 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5069 if (!may_be_java && !fs.access_flags().is_internal()) {
5070 // Only look at injected fields
5071 continue;
5072 }
5073 if (fs.name() == name() && fs.signature() == signature()) {
5074 return fs.offset();
5075 }
5076 }
5077 ResourceMark rm;
5078 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)" : "");
5079 #ifndef PRODUCT
5080 ik->print();
5081 tty->print_cr("all fields:");
5082 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5083 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5084 }
5085 #endif //PRODUCT
5086 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5087 return -1;
5088 }
5089
5090 void javaClasses_init() {
5091 JavaClasses::compute_offsets();
5092 JavaClasses::check_offsets();
5093 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5094 }