1 /*
2 * Copyright (c) 1997, 2020, 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 "classfile/altHashing.hpp"
27 #include "classfile/classLoaderData.inline.hpp"
28 #include "classfile/javaClasses.inline.hpp"
29 #include "classfile/moduleEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "code/debugInfo.hpp"
34 #include "code/dependencyContext.hpp"
35 #include "code/pcDesc.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "logging/log.hpp"
39 #include "logging/logStream.hpp"
40 #include "memory/heapShared.inline.hpp"
41 #include "memory/metaspaceShared.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "oops/fieldStreams.inline.hpp"
46 #include "oops/instanceKlass.hpp"
47 #include "oops/instanceMirrorKlass.inline.hpp"
48 #include "oops/klass.hpp"
49 #include "oops/method.inline.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/symbol.hpp"
53 #include "oops/recordComponent.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "oops/valueArrayKlass.hpp"
56 #include "oops/valueKlass.inline.hpp"
57 #include "prims/jvmtiExport.hpp"
58 #include "prims/resolvedMethodTable.hpp"
59 #include "runtime/fieldDescriptor.inline.hpp"
60 #include "runtime/frame.inline.hpp"
61 #include "runtime/handles.inline.hpp"
62 #include "runtime/init.hpp"
63 #include "runtime/interfaceSupport.inline.hpp"
64 #include "runtime/java.hpp"
65 #include "runtime/javaCalls.hpp"
66 #include "runtime/jniHandles.inline.hpp"
67 #include "runtime/safepoint.hpp"
68 #include "runtime/safepointVerifiers.hpp"
69 #include "runtime/thread.inline.hpp"
70 #include "runtime/vframe.inline.hpp"
71 #include "runtime/vm_version.hpp"
72 #include "utilities/align.hpp"
73 #include "utilities/preserveException.hpp"
74 #include "utilities/utf8.hpp"
75 #if INCLUDE_JVMCI
76 #include "jvmci/jvmciJavaClasses.hpp"
77 #endif
78
79 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
80 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
81
82 #if INCLUDE_CDS
83 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
84 f->do_u4((u4*)&_##name##_offset);
85 #endif
86
87 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
88 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
89
90 InjectedField JavaClasses::_injected_fields[] = {
91 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
92 };
93
94 // Register native methods of Object
95 void java_lang_Object::register_natives(TRAPS) {
96 InstanceKlass* obj = SystemDictionary::Object_klass();
97 Method::register_native(obj, vmSymbols::hashCode_name(),
98 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
99 Method::register_native(obj, vmSymbols::wait_name(),
100 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
101 Method::register_native(obj, vmSymbols::notify_name(),
102 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
103 Method::register_native(obj, vmSymbols::notifyAll_name(),
104 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
105 Method::register_native(obj, vmSymbols::clone_name(),
106 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
107 }
108
109 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
110 return _injected_fields[id].compute_offset();
111 }
112
113 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
114 *field_count = 0;
115
116 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
117 if (sid == vmSymbols::NO_SID) {
118 // Only well known classes can inject fields
119 return NULL;
120 }
121
122 int count = 0;
123 int start = -1;
124
125 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
126 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
127 count++; \
128 if (start == -1) start = klass##_##name##_enum; \
129 }
130 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
131 #undef LOOKUP_INJECTED_FIELD
132
133 if (start != -1) {
134 *field_count = count;
135 return _injected_fields + start;
136 }
137 return NULL;
138 }
139
140
141 // Helpful routine for computing field offsets at run time rather than hardcoding them
142 // Finds local fields only, including static fields. Static field offsets are from the
143 // beginning of the mirror.
144 static void compute_offset(int &dest_offset,
145 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
146 bool is_static = false) {
147 fieldDescriptor fd;
148 if (ik == NULL) {
149 ResourceMark rm;
150 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
151 vm_exit_during_initialization("Invalid layout of well-known class");
152 }
153
154 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
155 ResourceMark rm;
156 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
157 name_symbol->as_C_string(), signature_symbol->as_C_string());
158 #ifndef PRODUCT
159 // Prints all fields and offsets
160 Log(class) lt;
161 LogStream ls(lt.error());
162 ik->print_on(&ls);
163 #endif //PRODUCT
164 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
165 }
166 dest_offset = fd.offset();
167 }
168
169 // Overloading to pass name as a string.
170 static void compute_offset(int& dest_offset, InstanceKlass* ik,
171 const char* name_string, Symbol* signature_symbol,
172 bool is_static = false) {
173 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
174 if (name == NULL) {
175 ResourceMark rm;
176 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
177 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
178 }
179 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
180 }
181
182 int java_lang_String::value_offset = 0;
183 int java_lang_String::hash_offset = 0;
184 int java_lang_String::hashIsZero_offset = 0;
185 int java_lang_String::coder_offset = 0;
186
187 bool java_lang_String::initialized = false;
188
189 bool java_lang_String::is_instance(oop obj) {
190 return is_instance_inlined(obj);
191 }
192
193 #if INCLUDE_CDS
194 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
195 f->do_u4((u4*)&offset)
196 #endif
197
198 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
199 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
200
201 #define STRING_FIELDS_DO(macro) \
202 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
203 macro(hash_offset, k, "hash", int_signature, false); \
204 macro(hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
205 macro(coder_offset, k, "coder", byte_signature, false);
206
207 void java_lang_String::compute_offsets() {
208 if (initialized) {
209 return;
210 }
211
212 InstanceKlass* k = SystemDictionary::String_klass();
213 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
214
215 initialized = true;
216 }
217
218 #if INCLUDE_CDS
219 void java_lang_String::serialize_offsets(SerializeClosure* f) {
220 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
221 f->do_bool(&initialized);
222 }
223 #endif
224
225 class CompactStringsFixup : public FieldClosure {
226 private:
227 bool _value;
228
229 public:
230 CompactStringsFixup(bool value) : _value(value) {}
231
232 void do_field(fieldDescriptor* fd) {
233 if (fd->name() == vmSymbols::compact_strings_name()) {
234 oop mirror = fd->field_holder()->java_mirror();
235 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
236 assert(mirror != NULL, "String must have mirror already");
237 mirror->bool_field_put(fd->offset(), _value);
238 }
239 }
240 };
241
242 void java_lang_String::set_compact_strings(bool value) {
243 CompactStringsFixup fix(value);
244 SystemDictionary::String_klass()->do_local_static_fields(&fix);
245 }
246
247 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
248 assert(initialized, "Must be initialized");
249 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
250
251 // Create the String object first, so there's a chance that the String
252 // and the char array it points to end up in the same cache line.
253 oop obj;
254 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
255
256 // Create the char array. The String object must be handlized here
257 // because GC can happen as a result of the allocation attempt.
258 Handle h_obj(THREAD, obj);
259 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
260 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
261
262 // Point the String at the char array
263 obj = h_obj();
264 set_value(obj, buffer);
265 // No need to zero the offset, allocation zero'ed the entire String object
266 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
267 return h_obj;
268 }
269
270 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
271 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
272 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
273 typeArrayOop buffer = value(h_obj());
274 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
275 if (is_latin1) {
276 for (int index = 0; index < length; index++) {
277 buffer->byte_at_put(index, (jbyte)unicode[index]);
278 }
279 } else {
280 for (int index = 0; index < length; index++) {
281 buffer->char_at_put(index, unicode[index]);
282 }
283 }
284
285 #ifdef ASSERT
286 {
287 ResourceMark rm;
288 char* expected = UNICODE::as_utf8(unicode, length);
289 char* actual = as_utf8_string(h_obj());
290 if (strcmp(expected, actual) != 0) {
291 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
292 ShouldNotReachHere();
293 }
294 }
295 #endif
296
297 return h_obj;
298 }
299
300 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
301 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
302 return h_obj();
303 }
304
305 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
306 if (utf8_str == NULL) {
307 return Handle();
308 }
309 bool has_multibyte, is_latin1;
310 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
311 if (!CompactStrings) {
312 has_multibyte = true;
313 is_latin1 = false;
314 }
315
316 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
317 if (length > 0) {
318 if (!has_multibyte) {
319 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
320 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
321 } else if (is_latin1) {
322 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
323 } else {
324 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
325 }
326 }
327
328 #ifdef ASSERT
329 // This check is too strict because the input string is not necessarily valid UTF8.
330 // For example, it may be created with arbitrary content via jni_NewStringUTF.
331 /*
332 {
333 ResourceMark rm;
334 const char* expected = utf8_str;
335 char* actual = as_utf8_string(h_obj());
336 if (strcmp(expected, actual) != 0) {
337 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
338 ShouldNotReachHere();
339 }
340 }
341 */
342 #endif
343
344 return h_obj;
345 }
346
347 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
348 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
349 return h_obj();
350 }
351
352 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
353 const char* utf8_str = (char*)symbol->bytes();
354 int utf8_len = symbol->utf8_length();
355
356 bool has_multibyte, is_latin1;
357 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
358 if (!CompactStrings) {
359 has_multibyte = true;
360 is_latin1 = false;
361 }
362
363 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
364 if (length > 0) {
365 if (!has_multibyte) {
366 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
367 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
368 } else if (is_latin1) {
369 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
370 } else {
371 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
372 }
373 }
374
375 #ifdef ASSERT
376 {
377 ResourceMark rm;
378 const char* expected = symbol->as_utf8();
379 char* actual = as_utf8_string(h_obj());
380 if (strncmp(expected, actual, utf8_len) != 0) {
381 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
382 ShouldNotReachHere();
383 }
384 }
385 #endif
386
387 return h_obj;
388 }
389
390 // Converts a C string to a Java String based on current encoding
391 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
392 assert(str != NULL, "bad arguments");
393
394 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
395 static to_java_string_fn_t _to_java_string_fn = NULL;
396
397 if (_to_java_string_fn == NULL) {
398 void *lib_handle = os::native_java_library();
399 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
400 #if defined(_WIN32) && !defined(_WIN64)
401 if (_to_java_string_fn == NULL) {
402 // On 32 bit Windows, also try __stdcall decorated name
403 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
404 }
405 #endif
406 if (_to_java_string_fn == NULL) {
407 fatal("JNU_NewStringPlatform missing");
408 }
409 }
410
411 jstring js = NULL;
412 {
413 assert(THREAD->is_Java_thread(), "must be java thread");
414 JavaThread* thread = (JavaThread*)THREAD;
415 HandleMark hm(thread);
416 ThreadToNativeFromVM ttn(thread);
417 js = (_to_java_string_fn)(thread->jni_environment(), str);
418 }
419
420 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
421 JNIHandles::destroy_local(js); // destroy local JNIHandle.
422 return native_platform_string;
423 }
424
425 // Converts a Java String to a native C string that can be used for
426 // native OS calls.
427 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
428 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
429 static to_platform_string_fn_t _to_platform_string_fn = NULL;
430
431 if (_to_platform_string_fn == NULL) {
432 void *lib_handle = os::native_java_library();
433 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
434 if (_to_platform_string_fn == NULL) {
435 fatal("GetStringPlatformChars missing");
436 }
437 }
438
439 char *native_platform_string;
440 { JavaThread* thread = (JavaThread*)THREAD;
441 assert(thread->is_Java_thread(), "must be java thread");
442 JNIEnv *env = thread->jni_environment();
443 jstring js = (jstring) JNIHandles::make_local(env, java_string());
444 bool is_copy;
445 HandleMark hm(thread);
446 ThreadToNativeFromVM ttn(thread);
447 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
448 assert(is_copy == JNI_TRUE, "is_copy value changed");
449 JNIHandles::destroy_local(js);
450 }
451 return native_platform_string;
452 }
453
454 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
455 oop obj = java_string();
456 // Typical usage is to convert all '/' to '.' in string.
457 typeArrayOop value = java_lang_String::value(obj);
458 int length = java_lang_String::length(obj, value);
459 bool is_latin1 = java_lang_String::is_latin1(obj);
460
461 // First check if any from_char exist
462 int index; // Declared outside, used later
463 for (index = 0; index < length; index++) {
464 jchar c = !is_latin1 ? value->char_at(index) :
465 ((jchar) value->byte_at(index)) & 0xff;
466 if (c == from_char) {
467 break;
468 }
469 }
470 if (index == length) {
471 // No from_char, so do not copy.
472 return java_string;
473 }
474
475 // Check if result string will be latin1
476 bool to_is_latin1 = false;
477
478 // Replacement char must be latin1
479 if (CompactStrings && UNICODE::is_latin1(to_char)) {
480 if (is_latin1) {
481 // Source string is latin1 as well
482 to_is_latin1 = true;
483 } else if (!UNICODE::is_latin1(from_char)) {
484 // We are replacing an UTF16 char. Scan string to
485 // check if result can be latin1 encoded.
486 to_is_latin1 = true;
487 for (index = 0; index < length; index++) {
488 jchar c = value->char_at(index);
489 if (c != from_char && !UNICODE::is_latin1(c)) {
490 to_is_latin1 = false;
491 break;
492 }
493 }
494 }
495 }
496
497 // Create new UNICODE (or byte) buffer. Must handlize value because GC
498 // may happen during String and char array creation.
499 typeArrayHandle h_value(THREAD, value);
500 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
501 typeArrayOop from_buffer = h_value();
502 typeArrayOop to_buffer = java_lang_String::value(string());
503
504 // Copy contents
505 for (index = 0; index < length; index++) {
506 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
507 ((jchar) from_buffer->byte_at(index)) & 0xff;
508 if (c == from_char) {
509 c = to_char;
510 }
511 if (!to_is_latin1) {
512 to_buffer->char_at_put(index, c);
513 } else {
514 to_buffer->byte_at_put(index, (jbyte) c);
515 }
516 }
517 return string;
518 }
519
520 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
521 typeArrayOop value = java_lang_String::value(java_string);
522 length = java_lang_String::length(java_string, value);
523 bool is_latin1 = java_lang_String::is_latin1(java_string);
524
525 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
526 if (result != NULL) {
527 if (!is_latin1) {
528 for (int index = 0; index < length; index++) {
529 result[index] = value->char_at(index);
530 }
531 } else {
532 for (int index = 0; index < length; index++) {
533 result[index] = ((jchar) value->byte_at(index)) & 0xff;
534 }
535 }
536 } else {
537 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
538 }
539 return result;
540 }
541
542 unsigned int java_lang_String::hash_code(oop java_string) {
543 // The hash and hashIsZero fields are subject to a benign data race,
544 // making it crucial to ensure that any observable result of the
545 // calculation in this method stays correct under any possible read of
546 // these fields. Necessary restrictions to allow this to be correct
547 // without explicit memory fences or similar concurrency primitives is
548 // that we can ever only write to one of these two fields for a given
549 // String instance, and that the computation is idempotent and derived
550 // from immutable state
551 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
552 if (java_lang_String::hash_is_set(java_string)) {
553 return java_string->int_field(hash_offset);
554 }
555
556 typeArrayOop value = java_lang_String::value(java_string);
557 int length = java_lang_String::length(java_string, value);
558 bool is_latin1 = java_lang_String::is_latin1(java_string);
559
560 unsigned int hash = 0;
561 if (length > 0) {
562 if (is_latin1) {
563 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
564 } else {
565 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
566 }
567 }
568
569 if (hash != 0) {
570 java_string->int_field_put(hash_offset, hash);
571 } else {
572 java_string->bool_field_put(hashIsZero_offset, true);
573 }
574 return hash;
575 }
576
577 char* java_lang_String::as_quoted_ascii(oop java_string) {
578 typeArrayOop value = java_lang_String::value(java_string);
579 int length = java_lang_String::length(java_string, value);
580 bool is_latin1 = java_lang_String::is_latin1(java_string);
581
582 if (length == 0) return NULL;
583
584 char* result;
585 int result_length;
586 if (!is_latin1) {
587 jchar* base = value->char_at_addr(0);
588 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
589 result = NEW_RESOURCE_ARRAY(char, result_length);
590 UNICODE::as_quoted_ascii(base, length, result, result_length);
591 } else {
592 jbyte* base = value->byte_at_addr(0);
593 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
594 result = NEW_RESOURCE_ARRAY(char, result_length);
595 UNICODE::as_quoted_ascii(base, length, result, result_length);
596 }
597 assert(result_length >= length + 1, "must not be shorter");
598 assert(result_length == (int)strlen(result) + 1, "must match");
599 return result;
600 }
601
602 Symbol* java_lang_String::as_symbol(oop java_string) {
603 typeArrayOop value = java_lang_String::value(java_string);
604 int length = java_lang_String::length(java_string, value);
605 bool is_latin1 = java_lang_String::is_latin1(java_string);
606 if (!is_latin1) {
607 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
608 Symbol* sym = SymbolTable::new_symbol(base, length);
609 return sym;
610 } else {
611 ResourceMark rm;
612 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
613 const char* base = UNICODE::as_utf8(position, length);
614 Symbol* sym = SymbolTable::new_symbol(base, length);
615 return sym;
616 }
617 }
618
619 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
620 typeArrayOop value = java_lang_String::value(java_string);
621 int length = java_lang_String::length(java_string, value);
622 bool is_latin1 = java_lang_String::is_latin1(java_string);
623 if (!is_latin1) {
624 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
625 return SymbolTable::probe_unicode(base, length);
626 } else {
627 ResourceMark rm;
628 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
629 const char* base = UNICODE::as_utf8(position, length);
630 return SymbolTable::probe(base, length);
631 }
632 }
633
634 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
635 assert(value_equals(value, java_lang_String::value(java_string)),
636 "value must be same as java_lang_String::value(java_string)");
637 int length = java_lang_String::length(java_string, value);
638 if (length == 0) {
639 return 0;
640 }
641 if (!java_lang_String::is_latin1(java_string)) {
642 return UNICODE::utf8_length(value->char_at_addr(0), length);
643 } else {
644 return UNICODE::utf8_length(value->byte_at_addr(0), length);
645 }
646 }
647
648 int java_lang_String::utf8_length(oop java_string) {
649 typeArrayOop value = java_lang_String::value(java_string);
650 return utf8_length(java_string, value);
651 }
652
653 char* java_lang_String::as_utf8_string(oop java_string) {
654 typeArrayOop value = java_lang_String::value(java_string);
655 int length = java_lang_String::length(java_string, value);
656 bool is_latin1 = java_lang_String::is_latin1(java_string);
657 if (!is_latin1) {
658 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
659 return UNICODE::as_utf8(position, length);
660 } else {
661 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
662 return UNICODE::as_utf8(position, length);
663 }
664 }
665
666 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
667 assert(value_equals(value, java_lang_String::value(java_string)),
668 "value must be same as java_lang_String::value(java_string)");
669 int length = java_lang_String::length(java_string, value);
670 bool is_latin1 = java_lang_String::is_latin1(java_string);
671 if (!is_latin1) {
672 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
673 return UNICODE::as_utf8(position, length, buf, buflen);
674 } else {
675 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
676 return UNICODE::as_utf8(position, length, buf, buflen);
677 }
678 }
679
680 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
681 typeArrayOop value = java_lang_String::value(java_string);
682 return as_utf8_string(java_string, value, buf, buflen);
683 }
684
685 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
686 typeArrayOop value = java_lang_String::value(java_string);
687 bool is_latin1 = java_lang_String::is_latin1(java_string);
688 assert(start + len <= java_lang_String::length(java_string), "just checking");
689 if (!is_latin1) {
690 jchar* position = value->char_at_addr(start);
691 return UNICODE::as_utf8(position, len);
692 } else {
693 jbyte* position = value->byte_at_addr(start);
694 return UNICODE::as_utf8(position, len);
695 }
696 }
697
698 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
699 assert(value_equals(value, java_lang_String::value(java_string)),
700 "value must be same as java_lang_String::value(java_string)");
701 assert(start + len <= java_lang_String::length(java_string), "just checking");
702 bool is_latin1 = java_lang_String::is_latin1(java_string);
703 if (!is_latin1) {
704 jchar* position = value->char_at_addr(start);
705 return UNICODE::as_utf8(position, len, buf, buflen);
706 } else {
707 jbyte* position = value->byte_at_addr(start);
708 return UNICODE::as_utf8(position, len, buf, buflen);
709 }
710 }
711
712 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
713 assert(java_string->klass() == SystemDictionary::String_klass(),
714 "must be java_string");
715 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
716 int length = java_lang_String::length(java_string, value);
717 if (length != len) {
718 return false;
719 }
720 bool is_latin1 = java_lang_String::is_latin1(java_string);
721 if (!is_latin1) {
722 for (int i = 0; i < len; i++) {
723 if (value->char_at(i) != chars[i]) {
724 return false;
725 }
726 }
727 } else {
728 for (int i = 0; i < len; i++) {
729 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
730 return false;
731 }
732 }
733 }
734 return true;
735 }
736
737 bool java_lang_String::equals(oop str1, oop str2) {
738 assert(str1->klass() == SystemDictionary::String_klass(),
739 "must be java String");
740 assert(str2->klass() == SystemDictionary::String_klass(),
741 "must be java String");
742 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
743 bool is_latin1 = java_lang_String::is_latin1(str1);
744 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
745 bool is_latin2 = java_lang_String::is_latin1(str2);
746
747 if (is_latin1 != is_latin2) {
748 // Strings with different coders are never equal.
749 return false;
750 }
751 return value_equals(value1, value2);
752 }
753
754 void java_lang_String::print(oop java_string, outputStream* st) {
755 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
756 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
757
758 if (value == NULL) {
759 // This can happen if, e.g., printing a String
760 // object before its initializer has been called
761 st->print("NULL");
762 return;
763 }
764
765 int length = java_lang_String::length(java_string, value);
766 bool is_latin1 = java_lang_String::is_latin1(java_string);
767
768 st->print("\"");
769 for (int index = 0; index < length; index++) {
770 st->print("%c", (!is_latin1) ? value->char_at(index) :
771 ((jchar) value->byte_at(index)) & 0xff );
772 }
773 st->print("\"");
774 }
775
776
777 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
778 assert(mirror.not_null() && fd->is_static(), "just checking");
779 if (fd->has_initial_value()) {
780 BasicType t = fd->field_type();
781 switch (t) {
782 case T_BYTE:
783 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
784 break;
785 case T_BOOLEAN:
786 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
787 break;
788 case T_CHAR:
789 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
790 break;
791 case T_SHORT:
792 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
793 break;
794 case T_INT:
795 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
796 break;
797 case T_FLOAT:
798 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
799 break;
800 case T_DOUBLE:
801 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
802 break;
803 case T_LONG:
804 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
805 break;
806 case T_OBJECT:
807 {
808 assert(fd->signature() == vmSymbols::string_signature(),
809 "just checking");
810 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
811 // Archive the String field and update the pointer.
812 oop s = mirror()->obj_field(fd->offset());
813 oop archived_s = StringTable::create_archived_string(s, CHECK);
814 mirror()->obj_field_put(fd->offset(), archived_s);
815 } else {
816 oop string = fd->string_initial_value(CHECK);
817 mirror()->obj_field_put(fd->offset(), string);
818 }
819 }
820 break;
821 default:
822 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
823 "Illegal ConstantValue attribute in class file");
824 }
825 }
826 }
827
828
829 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
830 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
831
832 // If the offset was read from the shared archive, it was fixed up already
833 if (!k->is_shared()) {
834 if (k->is_instance_klass()) {
835 // During bootstrap, java.lang.Class wasn't loaded so static field
836 // offsets were computed without the size added it. Go back and
837 // update all the static field offsets to included the size.
838 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
839 if (fs.access_flags().is_static()) {
840 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
841 fs.set_offset(real_offset);
842 }
843 }
844 }
845 }
846
847 if (k->is_shared() && k->has_raw_archived_mirror()) {
848 if (HeapShared::open_archive_heap_region_mapped()) {
849 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
850 assert(present, "Missing archived mirror for %s", k->external_name());
851 return;
852 } else {
853 k->set_java_mirror_handle(NULL);
854 k->clear_has_raw_archived_mirror();
855 }
856 }
857 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
858 }
859
860 void java_lang_Class::initialize_mirror_fields(Klass* k,
861 Handle mirror,
862 Handle protection_domain,
863 TRAPS) {
864 // Allocate a simple java object for a lock.
865 // This needs to be a java object because during class initialization
866 // it can be held across a java call.
867 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
868 set_init_lock(mirror(), r);
869
870 // Set protection domain also
871 set_protection_domain(mirror(), protection_domain());
872
873 // Initialize static fields
874 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
875 }
876
877 // Set the java.lang.Module module field in the java_lang_Class mirror
878 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
879 if (module.is_null()) {
880 // During startup, the module may be NULL only if java.base has not been defined yet.
881 // Put the class on the fixup_module_list to patch later when the java.lang.Module
882 // for java.base is known. But note that since we captured the NULL module another
883 // thread may have completed that initialization.
884
885 bool javabase_was_defined = false;
886 {
887 MutexLocker m1(THREAD, Module_lock);
888 // Keep list of classes needing java.base module fixup
889 if (!ModuleEntryTable::javabase_defined()) {
890 assert(k->java_mirror() != NULL, "Class's mirror is null");
891 k->class_loader_data()->inc_keep_alive();
892 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
893 fixup_module_field_list()->push(k);
894 } else {
895 javabase_was_defined = true;
896 }
897 }
898
899 // If java.base was already defined then patch this particular class with java.base.
900 if (javabase_was_defined) {
901 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
902 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
903 "Setting class module field, " JAVA_BASE_NAME " should be defined");
904 Handle javabase_handle(THREAD, javabase_entry->module());
905 set_module(mirror(), javabase_handle());
906 }
907 } else {
908 assert(Universe::is_module_initialized() ||
909 (ModuleEntryTable::javabase_defined() &&
910 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
911 "Incorrect java.lang.Module specification while creating mirror");
912 set_module(mirror(), module());
913 }
914 }
915
916 // Statically allocate fixup lists because they always get created.
917 void java_lang_Class::allocate_fixup_lists() {
918 GrowableArray<Klass*>* mirror_list =
919 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
920 set_fixup_mirror_list(mirror_list);
921
922 GrowableArray<Klass*>* module_list =
923 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
924 set_fixup_module_field_list(module_list);
925 }
926
927 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
928 Handle module, Handle protection_domain, TRAPS) {
929 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
930 assert(k->java_mirror() == NULL, "should only assign mirror once");
931
932 // Use this moment of initialization to cache modifier_flags also,
933 // to support Class.getModifiers(). Instance classes recalculate
934 // the cached flags after the class file is parsed, but before the
935 // class is put into the system dictionary.
936 int computed_modifiers = k->compute_modifier_flags(CHECK);
937 k->set_modifier_flags(computed_modifiers);
938 // Class_klass has to be loaded because it is used to allocate
939 // the mirror.
940 if (SystemDictionary::Class_klass_loaded()) {
941 // Allocate mirror (java.lang.Class instance)
942 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
943 Handle mirror(THREAD, mirror_oop);
944 Handle comp_mirror;
945
946 // Setup indirection from mirror->klass
947 java_lang_Class::set_klass(mirror(), k);
948
949 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
950 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
951
952 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
953
954 // It might also have a component mirror. This mirror must already exist.
955 if (k->is_array_klass()) {
956 if (k->is_valueArray_klass()) {
957 Klass* element_klass = (Klass*) ValueArrayKlass::cast(k)->element_klass();
958 assert(element_klass->is_value(), "Must be value type component");
959 ValueKlass* vk = ValueKlass::cast(InstanceKlass::cast(element_klass));
960 comp_mirror = Handle(THREAD, vk->value_mirror());
961 } else if (k->is_typeArray_klass()) {
962 BasicType type = TypeArrayKlass::cast(k)->element_type();
963 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
964 } else {
965 assert(k->is_objArray_klass(), "Must be");
966 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
967 assert(element_klass != NULL, "Must have an element klass");
968 if (element_klass->is_value()) {
969 ValueKlass* vk = ValueKlass::cast(InstanceKlass::cast(element_klass));
970 assert(vk->java_mirror() == vk->value_mirror(), "primary mirror is the value mirror");
971 assert(vk->indirect_mirror() != NULL, "must have an indirect class mirror");
972 comp_mirror = k->name()->is_Q_array_signature() ? Handle(THREAD, vk->value_mirror())
973 : Handle(THREAD, vk->indirect_mirror());
974 } else {
975 comp_mirror = Handle(THREAD, element_klass->java_mirror());
976 }
977 }
978 assert(comp_mirror() != NULL, "must have a mirror");
979
980 // Two-way link between the array klass and its component mirror:
981 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
982 set_component_mirror(mirror(), comp_mirror());
983 // See below for ordering dependencies between field array_klass in component mirror
984 // and java_mirror in this klass.
985 } else {
986 assert(k->is_instance_klass(), "Must be");
987
988 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
989 if (HAS_PENDING_EXCEPTION) {
990 // If any of the fields throws an exception like OOM remove the klass field
991 // from the mirror so GC doesn't follow it after the klass has been deallocated.
992 // This mirror looks like a primitive type, which logically it is because it
993 // it represents no class.
994 java_lang_Class::set_klass(mirror(), NULL);
995 return;
996 }
997 }
998
999 // set the classLoader field in the java_lang_Class instance
1000 assert(class_loader() == k->class_loader(), "should be same");
1001 set_class_loader(mirror(), class_loader());
1002
1003 // Setup indirection from klass->mirror
1004 // after any exceptions can happen during allocations.
1005 k->set_java_mirror(mirror);
1006
1007 // Set the module field in the java_lang_Class instance. This must be done
1008 // after the mirror is set.
1009 set_mirror_module_field(k, mirror, module, THREAD);
1010
1011 if (comp_mirror() != NULL) {
1012 // Set after k->java_mirror() is published, because compiled code running
1013 // concurrently doesn't expect a k to have a null java_mirror.
1014 release_set_array_klass(comp_mirror(), k);
1015 }
1016
1017 if (k->is_value()) {
1018 // create the secondary mirror for an inline class
1019 oop indirect_mirror_oop = create_indirect_type_mirror(k, mirror, CHECK);
1020 set_inline_type_mirror(mirror(), mirror());
1021 set_indirect_type_mirror(mirror(), indirect_mirror_oop);
1022 }
1023 } else {
1024 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1025 fixup_mirror_list()->push(k);
1026 }
1027 }
1028
1029 // Create the secondary mirror for inline class. Sets all the fields of this java.lang.Class
1030 // instance with the same value as the primary mirror
1031 oop java_lang_Class::create_indirect_type_mirror(Klass* k, Handle mirror, TRAPS) {
1032 assert(k->is_value(), "inline class");
1033 // Allocate mirror (java.lang.Class instance)
1034 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
1035 Handle indirect_mirror(THREAD, mirror_oop);
1036
1037 java_lang_Class::set_klass(indirect_mirror(), k);
1038 java_lang_Class::set_static_oop_field_count(indirect_mirror(), static_oop_field_count(mirror()));
1039 // ## do we need to set init lock?
1040 java_lang_Class::set_init_lock(indirect_mirror(), init_lock(mirror()));
1041
1042 set_protection_domain(indirect_mirror(), protection_domain(mirror()));
1043 set_class_loader(indirect_mirror(), class_loader(mirror()));
1044 // ## handle if java.base is not yet defined
1045 set_module(indirect_mirror(), module(mirror()));
1046 set_inline_type_mirror(indirect_mirror(), mirror());
1047 set_indirect_type_mirror(indirect_mirror(), indirect_mirror());
1048 return indirect_mirror();
1049 }
1050
1051 #if INCLUDE_CDS_JAVA_HEAP
1052 // Clears mirror fields. Static final fields with initial values are reloaded
1053 // from constant pool. The object identity hash is in the object header and is
1054 // not affected.
1055 class ResetMirrorField: public FieldClosure {
1056 private:
1057 Handle _m;
1058
1059 public:
1060 ResetMirrorField(Handle mirror) : _m(mirror) {}
1061
1062 void do_field(fieldDescriptor* fd) {
1063 assert(DumpSharedSpaces, "dump time only");
1064 assert(_m.not_null(), "Mirror cannot be NULL");
1065
1066 if (fd->is_static() && fd->has_initial_value()) {
1067 initialize_static_field(fd, _m, Thread::current());
1068 return;
1069 }
1070
1071 BasicType ft = fd->field_type();
1072 switch (ft) {
1073 case T_BYTE:
1074 _m()->byte_field_put(fd->offset(), 0);
1075 break;
1076 case T_CHAR:
1077 _m()->char_field_put(fd->offset(), 0);
1078 break;
1079 case T_DOUBLE:
1080 _m()->double_field_put(fd->offset(), 0);
1081 break;
1082 case T_FLOAT:
1083 _m()->float_field_put(fd->offset(), 0);
1084 break;
1085 case T_INT:
1086 _m()->int_field_put(fd->offset(), 0);
1087 break;
1088 case T_LONG:
1089 _m()->long_field_put(fd->offset(), 0);
1090 break;
1091 case T_SHORT:
1092 _m()->short_field_put(fd->offset(), 0);
1093 break;
1094 case T_BOOLEAN:
1095 _m()->bool_field_put(fd->offset(), false);
1096 break;
1097 case T_ARRAY:
1098 case T_OBJECT: {
1099 // It might be useful to cache the String field, but
1100 // for now just clear out any reference field
1101 oop o = _m()->obj_field(fd->offset());
1102 _m()->obj_field_put(fd->offset(), NULL);
1103 break;
1104 }
1105 default:
1106 ShouldNotReachHere();
1107 break;
1108 }
1109 }
1110 };
1111
1112 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1113 assert(HeapShared::is_heap_object_archiving_allowed(),
1114 "HeapShared::is_heap_object_archiving_allowed() must be true");
1115
1116 for (int t = 0; t <= T_VOID; t++) {
1117 oop m = Universe::_mirrors[t];
1118 if (m != NULL) {
1119 // Update the field at _array_klass_offset to point to the relocated array klass.
1120 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1121 assert(archived_m != NULL, "sanity");
1122 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1123 assert(ak != NULL || t == T_VOID, "should not be NULL");
1124 if (ak != NULL) {
1125 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1126 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1127 }
1128
1129 // Clear the fields. Just to be safe
1130 Klass *k = m->klass();
1131 Handle archived_mirror_h(THREAD, archived_m);
1132 ResetMirrorField reset(archived_mirror_h);
1133 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1134
1135 log_trace(cds, heap, mirror)(
1136 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1137 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1138
1139 Universe::_mirrors[t] = archived_m;
1140 }
1141 }
1142
1143 assert(Universe::_mirrors[T_INT] != NULL &&
1144 Universe::_mirrors[T_FLOAT] != NULL &&
1145 Universe::_mirrors[T_DOUBLE] != NULL &&
1146 Universe::_mirrors[T_BYTE] != NULL &&
1147 Universe::_mirrors[T_BOOLEAN] != NULL &&
1148 Universe::_mirrors[T_CHAR] != NULL &&
1149 Universe::_mirrors[T_LONG] != NULL &&
1150 Universe::_mirrors[T_SHORT] != NULL &&
1151 Universe::_mirrors[T_VOID] != NULL, "sanity");
1152
1153 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1154 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1155 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1156 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1157 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1158 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1159 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1160 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1161 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1162 }
1163
1164 //
1165 // After the mirror object is successfully archived, the archived
1166 // klass is set with _has_archived_raw_mirror flag.
1167 //
1168 // The _has_archived_raw_mirror flag is cleared at runtime when the
1169 // archived mirror is restored. If archived java heap data cannot
1170 // be used at runtime, new mirror object is created for the shared
1171 // class. The _has_archived_raw_mirror is cleared also during the process.
1172 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1173 assert(HeapShared::is_heap_object_archiving_allowed(),
1174 "HeapShared::is_heap_object_archiving_allowed() must be true");
1175
1176 // Mirror is already archived
1177 if (k->has_raw_archived_mirror()) {
1178 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1179 return k->archived_java_mirror_raw();
1180 }
1181
1182 // No mirror
1183 oop mirror = k->java_mirror();
1184 if (mirror == NULL) {
1185 return NULL;
1186 }
1187
1188 if (k->is_instance_klass()) {
1189 InstanceKlass *ik = InstanceKlass::cast(k);
1190 assert(ik->signers() == NULL, "class with signer should have been excluded");
1191
1192 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1193 ik->is_shared_app_class())) {
1194 // Archiving mirror for classes from non-builtin loaders is not
1195 // supported. Clear the _java_mirror within the archived class.
1196 k->set_java_mirror_handle(NULL);
1197 return NULL;
1198 }
1199 }
1200
1201 if (k->is_value()) {
1202 // Values have a mirror and an indirect mirror. Don't handle this for now. TODO:CDS
1203 k->set_java_mirror_handle(NULL);
1204 return NULL;
1205 }
1206
1207 // Now start archiving the mirror object
1208 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1209 if (archived_mirror == NULL) {
1210 return NULL;
1211 }
1212
1213 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1214 if (archived_mirror == NULL) {
1215 return NULL;
1216 }
1217
1218 k->set_archived_java_mirror_raw(archived_mirror);
1219
1220 k->set_has_raw_archived_mirror();
1221
1222 ResourceMark rm;
1223 log_trace(cds, heap, mirror)(
1224 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1225 k->external_name(), p2i(mirror), p2i(archived_mirror));
1226
1227 return archived_mirror;
1228 }
1229
1230 // The process is based on create_mirror().
1231 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1232 oop archived_mirror,
1233 Thread *THREAD) {
1234 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1235 // to archived metadata and objects below.
1236 Klass *c = archived_mirror->klass();
1237 Handle archived_mirror_h(THREAD, archived_mirror);
1238 ResetMirrorField reset(archived_mirror_h);
1239 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1240
1241 if (k->is_array_klass()) {
1242 oop archived_comp_mirror;
1243 if (k->is_typeArray_klass()) {
1244 // The primitive type mirrors are already archived. Get the archived mirror.
1245 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1246 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1247 assert(archived_comp_mirror != NULL, "Must be");
1248 } else {
1249 assert(k->is_objArray_klass(), "Must be");
1250 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1251 assert(element_klass != NULL, "Must have an element klass");
1252 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1253 if (archived_comp_mirror == NULL) {
1254 return NULL;
1255 }
1256 }
1257 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1258 } else {
1259 assert(k->is_instance_klass(), "Must be");
1260
1261 // Reset local static fields in the mirror
1262 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1263
1264 java_lang_Class:set_init_lock(archived_mirror, NULL);
1265
1266 set_protection_domain(archived_mirror, NULL);
1267 }
1268
1269 // clear class loader and mirror_module_field
1270 set_class_loader(archived_mirror, NULL);
1271 set_module(archived_mirror, NULL);
1272
1273 // The archived mirror's field at _klass_offset is still pointing to the original
1274 // klass. Updated the field in the archived mirror to point to the relocated
1275 // klass in the archive.
1276 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1277 log_debug(cds, heap, mirror)(
1278 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1279 p2i(as_Klass(mirror)), p2i(reloc_k));
1280 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
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 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1287 log_debug(cds, heap, mirror)(
1288 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1289 p2i(arr), p2i(reloc_arr));
1290 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1291 }
1292 return archived_mirror;
1293 }
1294
1295 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1296 if (MetaspaceShared::relocation_delta() != 0) {
1297 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1298
1299 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1300 if (ak != NULL) {
1301 archived_mirror->metadata_field_put(_array_klass_offset,
1302 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1303 }
1304 }
1305 }
1306
1307 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1308 if (MetaspaceShared::relocation_delta() != 0) {
1309 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1310 archived_mirror->metadata_field_put(_klass_offset,
1311 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1312
1313 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1314 if (ak != NULL) {
1315 archived_mirror->metadata_field_put(_array_klass_offset,
1316 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1317 }
1318 }
1319 }
1320
1321
1322 // Returns true if the mirror is updated, false if no archived mirror
1323 // data is present. After the archived mirror object is restored, the
1324 // shared klass' _has_raw_archived_mirror flag is cleared.
1325 bool java_lang_Class::restore_archived_mirror(Klass *k,
1326 Handle class_loader, Handle module,
1327 Handle protection_domain, TRAPS) {
1328 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1329 // see more details in SystemDictionary::resolve_well_known_classes().
1330 if (!SystemDictionary::Class_klass_loaded()) {
1331 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1332 fixup_mirror_list()->push(k);
1333 return true;
1334 }
1335
1336 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1337 if (m == NULL) {
1338 return false;
1339 }
1340
1341 // mirror is archived, restore
1342 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1343 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1344 update_archived_mirror_native_pointers(m);
1345 assert(as_Klass(m) == k, "must be");
1346 Handle mirror(THREAD, m);
1347
1348 if (!k->is_array_klass()) {
1349 // - local static final fields with initial values were initialized at dump time
1350
1351 // create the init_lock
1352 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1353 set_init_lock(mirror(), r);
1354
1355 if (protection_domain.not_null()) {
1356 set_protection_domain(mirror(), protection_domain());
1357 }
1358 }
1359
1360 assert(class_loader() == k->class_loader(), "should be same");
1361 if (class_loader.not_null()) {
1362 set_class_loader(mirror(), class_loader());
1363 }
1364
1365 k->set_java_mirror(mirror);
1366 k->clear_has_raw_archived_mirror();
1367
1368 set_mirror_module_field(k, mirror, module, THREAD);
1369
1370 if (log_is_enabled(Trace, cds, heap, mirror)) {
1371 ResourceMark rm(THREAD);
1372 log_trace(cds, heap, mirror)(
1373 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1374 }
1375
1376 return true;
1377 }
1378 #endif // INCLUDE_CDS_JAVA_HEAP
1379
1380 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1381 assert(_module_offset != 0, "must have been computed already");
1382 java_lang_Class::set_module(k->java_mirror(), module());
1383 }
1384
1385 int java_lang_Class::oop_size(oop java_class) {
1386 assert(_oop_size_offset != 0, "must be set");
1387 int size = java_class->int_field(_oop_size_offset);
1388 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1389 return size;
1390 }
1391
1392
1393 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1394 assert(_oop_size_offset != 0, "must be set");
1395 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1396 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1397 }
1398
1399 int java_lang_Class::static_oop_field_count(oop java_class) {
1400 assert(_static_oop_field_count_offset != 0, "must be set");
1401 return java_class->int_field(_static_oop_field_count_offset);
1402 }
1403
1404 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1405 assert(_static_oop_field_count_offset != 0, "must be set");
1406 return java_class->int_field_raw(_static_oop_field_count_offset);
1407 }
1408
1409 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1410 assert(_static_oop_field_count_offset != 0, "must be set");
1411 java_class->int_field_put(_static_oop_field_count_offset, size);
1412 }
1413
1414 oop java_lang_Class::protection_domain(oop java_class) {
1415 assert(_protection_domain_offset != 0, "must be set");
1416 return java_class->obj_field(_protection_domain_offset);
1417 }
1418 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1419 assert(_protection_domain_offset != 0, "must be set");
1420 java_class->obj_field_put(_protection_domain_offset, pd);
1421 }
1422
1423 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1424 assert(_component_mirror_offset != 0, "must be set");
1425 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1426 }
1427 oop java_lang_Class::component_mirror(oop java_class) {
1428 assert(_component_mirror_offset != 0, "must be set");
1429 return java_class->obj_field(_component_mirror_offset);
1430 }
1431
1432 oop java_lang_Class::init_lock(oop java_class) {
1433 assert(_init_lock_offset != 0, "must be set");
1434 return java_class->obj_field(_init_lock_offset);
1435 }
1436 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1437 assert(_init_lock_offset != 0, "must be set");
1438 java_class->obj_field_put(_init_lock_offset, init_lock);
1439 }
1440
1441 objArrayOop java_lang_Class::signers(oop java_class) {
1442 assert(_signers_offset != 0, "must be set");
1443 return (objArrayOop)java_class->obj_field(_signers_offset);
1444 }
1445 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1446 assert(_signers_offset != 0, "must be set");
1447 java_class->obj_field_put(_signers_offset, (oop)signers);
1448 }
1449
1450
1451 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1452 assert(_class_loader_offset != 0, "offsets should have been initialized");
1453 java_class->obj_field_put(_class_loader_offset, loader);
1454 }
1455
1456 oop java_lang_Class::class_loader(oop java_class) {
1457 assert(_class_loader_offset != 0, "must be set");
1458 return java_class->obj_field(_class_loader_offset);
1459 }
1460
1461 oop java_lang_Class::module(oop java_class) {
1462 assert(_module_offset != 0, "must be set");
1463 return java_class->obj_field(_module_offset);
1464 }
1465
1466 void java_lang_Class::set_module(oop java_class, oop module) {
1467 assert(_module_offset != 0, "must be set");
1468 java_class->obj_field_put(_module_offset, module);
1469 }
1470
1471 oop java_lang_Class::name(Handle java_class, TRAPS) {
1472 assert(_name_offset != 0, "must be set");
1473 oop o = java_class->obj_field(_name_offset);
1474 if (o == NULL) {
1475 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1476 java_class->obj_field_put(_name_offset, o);
1477 }
1478 return o;
1479 }
1480
1481 oop java_lang_Class::source_file(oop java_class) {
1482 assert(_source_file_offset != 0, "must be set");
1483 return java_class->obj_field(_source_file_offset);
1484 }
1485
1486 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1487 assert(_source_file_offset != 0, "must be set");
1488 java_class->obj_field_put(_source_file_offset, source_file);
1489 }
1490
1491 oop java_lang_Class::inline_type_mirror(oop java_class) {
1492 assert(_inline_mirror_offset != 0, "must be set");
1493 return java_class->obj_field(_inline_mirror_offset);
1494 }
1495
1496 void java_lang_Class::set_inline_type_mirror(oop java_class, oop mirror) {
1497 assert(_inline_mirror_offset != 0, "must be set");
1498 java_class->obj_field_put(_inline_mirror_offset, mirror);
1499 }
1500
1501 oop java_lang_Class::indirect_type_mirror(oop java_class) {
1502 assert(_indirect_mirror_offset != 0, "must be set");
1503 return java_class->obj_field(_indirect_mirror_offset);
1504 }
1505
1506 void java_lang_Class::set_indirect_type_mirror(oop java_class, oop mirror) {
1507 assert(_indirect_mirror_offset != 0, "must be set");
1508 java_class->obj_field_put(_indirect_mirror_offset, mirror);
1509 }
1510
1511 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1512 // This should be improved by adding a field at the Java level or by
1513 // introducing a new VM klass (see comment in ClassFileParser)
1514 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1515 if (type != T_VOID) {
1516 Klass* aklass = Universe::typeArrayKlassObj(type);
1517 assert(aklass != NULL, "correct bootstrap");
1518 release_set_array_klass(java_class, aklass);
1519 }
1520 #ifdef ASSERT
1521 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1522 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1523 #endif
1524 return java_class;
1525 }
1526
1527
1528 Klass* java_lang_Class::as_Klass(oop java_class) {
1529 //%note memory_2
1530 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1531 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1532 assert(k == NULL || k->is_klass(), "type check");
1533 return k;
1534 }
1535
1536 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1537 //%note memory_2
1538 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1539 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1540 assert(k == NULL || k->is_klass(), "type check");
1541 return k;
1542 }
1543
1544
1545 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1546 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1547 java_class->metadata_field_put(_klass_offset, klass);
1548 }
1549
1550
1551 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1552 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1553 Symbol* name = NULL;
1554 bool is_instance = false;
1555 bool is_value = false;
1556 if (is_primitive(java_class)) {
1557 name = vmSymbols::type_signature(primitive_type(java_class));
1558 } else {
1559 Klass* k = as_Klass(java_class);
1560 is_instance = k->is_instance_klass();
1561 is_value = k->is_value();
1562 name = k->name();
1563 }
1564 if (name == NULL) {
1565 st->print("<null>");
1566 return;
1567 }
1568 if (is_instance) {
1569 if (is_value && (java_class == inline_type_mirror(java_class))) {
1570 st->print("Q");
1571 } else {
1572 st->print("L");
1573 }
1574 }
1575 st->write((char*) name->base(), (int) name->utf8_length());
1576 if (is_instance) st->print(";");
1577 }
1578
1579 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1580 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1581 Symbol* name;
1582 if (is_primitive(java_class)) {
1583 name = vmSymbols::type_signature(primitive_type(java_class));
1584 // Because this can create a new symbol, the caller has to decrement
1585 // the refcount, so make adjustment here and below for symbols returned
1586 // that are not created or incremented due to a successful lookup.
1587 name->increment_refcount();
1588 } else {
1589 Klass* k = as_Klass(java_class);
1590 if (!k->is_instance_klass()) {
1591 name = k->name();
1592 name->increment_refcount();
1593 } else {
1594 ResourceMark rm;
1595 const char* sigstr;
1596 if (k->is_value()) {
1597 char c = (java_class == inline_type_mirror(java_class)) ?
1598 JVM_SIGNATURE_VALUETYPE : JVM_SIGNATURE_CLASS;
1599 sigstr = InstanceKlass::cast(k)->signature_name_of(c);
1600 } else {
1601 sigstr = k->signature_name();
1602 }
1603 int siglen = (int) strlen(sigstr);
1604 if (!intern_if_not_found) {
1605 name = SymbolTable::probe(sigstr, siglen);
1606 } else {
1607 name = SymbolTable::new_symbol(sigstr, siglen);
1608 }
1609 }
1610 }
1611 return name;
1612 }
1613
1614 // Returns the Java name for this Java mirror (Resource allocated)
1615 // See Klass::external_name().
1616 // For primitive type Java mirrors, its type name is returned.
1617 const char* java_lang_Class::as_external_name(oop java_class) {
1618 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1619 const char* name = NULL;
1620 if (is_primitive(java_class)) {
1621 name = type2name(primitive_type(java_class));
1622 } else {
1623 name = as_Klass(java_class)->external_name();
1624 }
1625 if (name == NULL) {
1626 name = "<null>";
1627 }
1628 return name;
1629 }
1630
1631 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1632 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1633 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1634 return k;
1635 }
1636
1637
1638 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1639 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1640 java_class->release_metadata_field_put(_array_klass_offset, klass);
1641 }
1642
1643
1644 BasicType java_lang_Class::primitive_type(oop java_class) {
1645 assert(java_lang_Class::is_primitive(java_class), "just checking");
1646 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1647 BasicType type = T_VOID;
1648 if (ak != NULL) {
1649 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1650 type = ArrayKlass::cast(ak)->element_type();
1651 } else {
1652 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1653 }
1654 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1655 return type;
1656 }
1657
1658 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1659 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1660 if (is_primitive(java_class)) {
1661 if (reference_klass != NULL)
1662 (*reference_klass) = NULL;
1663 return primitive_type(java_class);
1664 } else {
1665 if (reference_klass != NULL)
1666 (*reference_klass) = as_Klass(java_class);
1667 return T_OBJECT;
1668 }
1669 }
1670
1671
1672 oop java_lang_Class::primitive_mirror(BasicType t) {
1673 oop mirror = Universe::java_mirror(t);
1674 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1675 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1676 return mirror;
1677 }
1678
1679 bool java_lang_Class::offsets_computed = false;
1680 int java_lang_Class::classRedefinedCount_offset = -1;
1681
1682 #define CLASS_FIELDS_DO(macro) \
1683 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1684 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1685 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1686 macro(_module_offset, k, "module", module_signature, false); \
1687 macro(_name_offset, k, "name", string_signature, false); \
1688 macro(_inline_mirror_offset, k, "inlineType", class_signature, false); \
1689 macro(_indirect_mirror_offset, k, "indirectType", class_signature, false); \
1690
1691 void java_lang_Class::compute_offsets() {
1692 if (offsets_computed) {
1693 return;
1694 }
1695
1696 offsets_computed = true;
1697
1698 InstanceKlass* k = SystemDictionary::Class_klass();
1699 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1700
1701 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1702 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1703 // GC treats them the same.
1704 _init_lock_offset = _component_mirror_offset;
1705
1706 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1707 }
1708
1709 #if INCLUDE_CDS
1710 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1711 f->do_bool(&offsets_computed);
1712 f->do_u4((u4*)&_init_lock_offset);
1713
1714 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1715
1716 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1717 }
1718 #endif
1719
1720 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1721 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1722 return the_class_mirror->int_field(classRedefinedCount_offset);
1723 }
1724
1725 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1726 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1727 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1728 }
1729
1730
1731 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1732 // platform thread structure, and a eetop offset which was used for thread
1733 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1734 // merged, so in the HotSpot VM we just use the eetop field for the thread
1735 // instead of the privateInfo_offset.
1736 //
1737 // Note: The stackSize field is only present starting in 1.4.
1738
1739 int java_lang_Thread::_name_offset = 0;
1740 int java_lang_Thread::_group_offset = 0;
1741 int java_lang_Thread::_contextClassLoader_offset = 0;
1742 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1743 int java_lang_Thread::_priority_offset = 0;
1744 int java_lang_Thread::_eetop_offset = 0;
1745 int java_lang_Thread::_interrupted_offset = 0;
1746 int java_lang_Thread::_daemon_offset = 0;
1747 int java_lang_Thread::_stillborn_offset = 0;
1748 int java_lang_Thread::_stackSize_offset = 0;
1749 int java_lang_Thread::_tid_offset = 0;
1750 int java_lang_Thread::_thread_status_offset = 0;
1751 int java_lang_Thread::_park_blocker_offset = 0;
1752
1753 #define THREAD_FIELDS_DO(macro) \
1754 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1755 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1756 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1757 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1758 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1759 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1760 macro(_eetop_offset, k, "eetop", long_signature, false); \
1761 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1762 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1763 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1764 macro(_tid_offset, k, "tid", long_signature, false); \
1765 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1766 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1767
1768 void java_lang_Thread::compute_offsets() {
1769 assert(_group_offset == 0, "offsets should be initialized only once");
1770
1771 InstanceKlass* k = SystemDictionary::Thread_klass();
1772 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1773 }
1774
1775 #if INCLUDE_CDS
1776 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1777 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1778 }
1779 #endif
1780
1781 JavaThread* java_lang_Thread::thread(oop java_thread) {
1782 return (JavaThread*)java_thread->address_field(_eetop_offset);
1783 }
1784
1785
1786 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1787 java_thread->address_field_put(_eetop_offset, (address)thread);
1788 }
1789
1790 bool java_lang_Thread::interrupted(oop java_thread) {
1791 // Make sure the caller can safely access oops.
1792 assert(Thread::current()->is_VM_thread() ||
1793 (JavaThread::current()->thread_state() != _thread_blocked &&
1794 JavaThread::current()->thread_state() != _thread_in_native),
1795 "Unsafe access to oop");
1796 return java_thread->bool_field_volatile(_interrupted_offset);
1797 }
1798
1799 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1800 // Make sure the caller can safely access oops.
1801 assert(Thread::current()->is_VM_thread() ||
1802 (JavaThread::current()->thread_state() != _thread_blocked &&
1803 JavaThread::current()->thread_state() != _thread_in_native),
1804 "Unsafe access to oop");
1805 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1806 }
1807
1808
1809 oop java_lang_Thread::name(oop java_thread) {
1810 return java_thread->obj_field(_name_offset);
1811 }
1812
1813
1814 void java_lang_Thread::set_name(oop java_thread, oop name) {
1815 java_thread->obj_field_put(_name_offset, name);
1816 }
1817
1818
1819 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1820 return (ThreadPriority)java_thread->int_field(_priority_offset);
1821 }
1822
1823
1824 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1825 java_thread->int_field_put(_priority_offset, priority);
1826 }
1827
1828
1829 oop java_lang_Thread::threadGroup(oop java_thread) {
1830 return java_thread->obj_field(_group_offset);
1831 }
1832
1833
1834 bool java_lang_Thread::is_stillborn(oop java_thread) {
1835 return java_thread->bool_field(_stillborn_offset) != 0;
1836 }
1837
1838
1839 // We never have reason to turn the stillborn bit off
1840 void java_lang_Thread::set_stillborn(oop java_thread) {
1841 java_thread->bool_field_put(_stillborn_offset, true);
1842 }
1843
1844
1845 bool java_lang_Thread::is_alive(oop java_thread) {
1846 JavaThread* thr = java_lang_Thread::thread(java_thread);
1847 return (thr != NULL);
1848 }
1849
1850
1851 bool java_lang_Thread::is_daemon(oop java_thread) {
1852 return java_thread->bool_field(_daemon_offset) != 0;
1853 }
1854
1855
1856 void java_lang_Thread::set_daemon(oop java_thread) {
1857 java_thread->bool_field_put(_daemon_offset, true);
1858 }
1859
1860 oop java_lang_Thread::context_class_loader(oop java_thread) {
1861 return java_thread->obj_field(_contextClassLoader_offset);
1862 }
1863
1864 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1865 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1866 }
1867
1868
1869 jlong java_lang_Thread::stackSize(oop java_thread) {
1870 return java_thread->long_field(_stackSize_offset);
1871 }
1872
1873 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1874 void java_lang_Thread::set_thread_status(oop java_thread,
1875 java_lang_Thread::ThreadStatus status) {
1876 java_thread->int_field_put(_thread_status_offset, status);
1877 }
1878
1879 // Read thread status value from threadStatus field in java.lang.Thread java class.
1880 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1881 // Make sure the caller is operating on behalf of the VM or is
1882 // running VM code (state == _thread_in_vm).
1883 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1884 JavaThread::current()->thread_state() == _thread_in_vm,
1885 "Java Thread is not running in vm");
1886 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1887 }
1888
1889
1890 jlong java_lang_Thread::thread_id(oop java_thread) {
1891 return java_thread->long_field(_tid_offset);
1892 }
1893
1894 oop java_lang_Thread::park_blocker(oop java_thread) {
1895 return java_thread->obj_field(_park_blocker_offset);
1896 }
1897
1898 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1899 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1900 switch (status) {
1901 case NEW : return "NEW";
1902 case RUNNABLE : return "RUNNABLE";
1903 case SLEEPING : return "TIMED_WAITING (sleeping)";
1904 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1905 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1906 case PARKED : return "WAITING (parking)";
1907 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1908 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1909 case TERMINATED : return "TERMINATED";
1910 default : return "UNKNOWN";
1911 };
1912 }
1913 int java_lang_ThreadGroup::_parent_offset = 0;
1914 int java_lang_ThreadGroup::_name_offset = 0;
1915 int java_lang_ThreadGroup::_threads_offset = 0;
1916 int java_lang_ThreadGroup::_groups_offset = 0;
1917 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1918 int java_lang_ThreadGroup::_destroyed_offset = 0;
1919 int java_lang_ThreadGroup::_daemon_offset = 0;
1920 int java_lang_ThreadGroup::_nthreads_offset = 0;
1921 int java_lang_ThreadGroup::_ngroups_offset = 0;
1922
1923 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1924 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1925 return java_thread_group->obj_field(_parent_offset);
1926 }
1927
1928 // ("name as oop" accessor is not necessary)
1929
1930 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1931 oop name = java_thread_group->obj_field(_name_offset);
1932 // ThreadGroup.name can be null
1933 if (name != NULL) {
1934 return java_lang_String::as_utf8_string(name);
1935 }
1936 return NULL;
1937 }
1938
1939 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1940 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1941 return java_thread_group->int_field(_nthreads_offset);
1942 }
1943
1944 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1945 oop threads = java_thread_group->obj_field(_threads_offset);
1946 assert(threads != NULL, "threadgroups should have threads");
1947 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1948 return objArrayOop(threads);
1949 }
1950
1951 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1952 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1953 return java_thread_group->int_field(_ngroups_offset);
1954 }
1955
1956 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1957 oop groups = java_thread_group->obj_field(_groups_offset);
1958 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1959 return objArrayOop(groups);
1960 }
1961
1962 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1963 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1964 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1965 }
1966
1967 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1968 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1969 return java_thread_group->bool_field(_destroyed_offset) != 0;
1970 }
1971
1972 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1973 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1974 return java_thread_group->bool_field(_daemon_offset) != 0;
1975 }
1976
1977 #define THREADGROUP_FIELDS_DO(macro) \
1978 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1979 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1980 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1981 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1982 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1983 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1984 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1985 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1986 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1987
1988 void java_lang_ThreadGroup::compute_offsets() {
1989 assert(_parent_offset == 0, "offsets should be initialized only once");
1990
1991 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1992 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1993 }
1994
1995 #if INCLUDE_CDS
1996 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1997 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1998 }
1999 #endif
2000
2001 #define THROWABLE_FIELDS_DO(macro) \
2002 macro(backtrace_offset, k, "backtrace", object_signature, false); \
2003 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
2004 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
2005 macro(depth_offset, k, "depth", int_signature, false); \
2006 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2007
2008 void java_lang_Throwable::compute_offsets() {
2009 InstanceKlass* k = SystemDictionary::Throwable_klass();
2010 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2011 }
2012
2013 #if INCLUDE_CDS
2014 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2015 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2016 }
2017 #endif
2018
2019 oop java_lang_Throwable::unassigned_stacktrace() {
2020 InstanceKlass* ik = SystemDictionary::Throwable_klass();
2021 oop base = ik->static_field_base_raw();
2022 return base->obj_field(static_unassigned_stacktrace_offset);
2023 }
2024
2025 oop java_lang_Throwable::backtrace(oop throwable) {
2026 return throwable->obj_field_acquire(backtrace_offset);
2027 }
2028
2029
2030 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2031 throwable->release_obj_field_put(backtrace_offset, value);
2032 }
2033
2034 int java_lang_Throwable::depth(oop throwable) {
2035 return throwable->int_field(depth_offset);
2036 }
2037
2038 void java_lang_Throwable::set_depth(oop throwable, int value) {
2039 throwable->int_field_put(depth_offset, value);
2040 }
2041
2042 oop java_lang_Throwable::message(oop throwable) {
2043 return throwable->obj_field(detailMessage_offset);
2044 }
2045
2046
2047 // Return Symbol for detailed_message or NULL
2048 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2049 PRESERVE_EXCEPTION_MARK; // Keep original exception
2050 oop detailed_message = java_lang_Throwable::message(throwable);
2051 if (detailed_message != NULL) {
2052 return java_lang_String::as_symbol(detailed_message);
2053 }
2054 return NULL;
2055 }
2056
2057 void java_lang_Throwable::set_message(oop throwable, oop value) {
2058 throwable->obj_field_put(detailMessage_offset, value);
2059 }
2060
2061
2062 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2063 throwable->obj_field_put(stackTrace_offset, st_element_array);
2064 }
2065
2066 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2067 set_stacktrace(throwable, NULL);
2068 }
2069
2070
2071 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2072 ResourceMark rm;
2073 Klass* k = throwable->klass();
2074 assert(k != NULL, "just checking");
2075 st->print("%s", k->external_name());
2076 oop msg = message(throwable);
2077 if (msg != NULL) {
2078 st->print(": %s", java_lang_String::as_utf8_string(msg));
2079 }
2080 }
2081
2082 // After this many redefines, the stack trace is unreliable.
2083 const int MAX_VERSION = USHRT_MAX;
2084
2085 static inline bool version_matches(Method* method, int version) {
2086 assert(version < MAX_VERSION, "version is too big");
2087 return method != NULL && (method->constants()->version() == version);
2088 }
2089
2090 // This class provides a simple wrapper over the internal structure of
2091 // exception backtrace to insulate users of the backtrace from needing
2092 // to know what it looks like.
2093 // The code of this class is not GC safe. Allocations can only happen
2094 // in expand().
2095 class BacktraceBuilder: public StackObj {
2096 friend class BacktraceIterator;
2097 private:
2098 Handle _backtrace;
2099 objArrayOop _head;
2100 typeArrayOop _methods;
2101 typeArrayOop _bcis;
2102 objArrayOop _mirrors;
2103 typeArrayOop _names; // Needed to insulate method name against redefinition.
2104 // True if the top frame of the backtrace is omitted because it shall be hidden.
2105 bool _has_hidden_top_frame;
2106 int _index;
2107 NoSafepointVerifier _nsv;
2108
2109 enum {
2110 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2111 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2112 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2113 trace_names_offset = java_lang_Throwable::trace_names_offset,
2114 trace_next_offset = java_lang_Throwable::trace_next_offset,
2115 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2116 trace_size = java_lang_Throwable::trace_size,
2117 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2118 };
2119
2120 // get info out of chunks
2121 static typeArrayOop get_methods(objArrayHandle chunk) {
2122 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2123 assert(methods != NULL, "method array should be initialized in backtrace");
2124 return methods;
2125 }
2126 static typeArrayOop get_bcis(objArrayHandle chunk) {
2127 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2128 assert(bcis != NULL, "bci array should be initialized in backtrace");
2129 return bcis;
2130 }
2131 static objArrayOop get_mirrors(objArrayHandle chunk) {
2132 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2133 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2134 return mirrors;
2135 }
2136 static typeArrayOop get_names(objArrayHandle chunk) {
2137 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2138 assert(names != NULL, "names array should be initialized in backtrace");
2139 return names;
2140 }
2141 static bool has_hidden_top_frame(objArrayHandle chunk) {
2142 oop hidden = chunk->obj_at(trace_hidden_offset);
2143 return hidden != NULL;
2144 }
2145
2146 public:
2147
2148 // constructor for new backtrace
2149 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2150 expand(CHECK);
2151 _backtrace = Handle(THREAD, _head);
2152 _index = 0;
2153 }
2154
2155 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2156 _methods = get_methods(backtrace);
2157 _bcis = get_bcis(backtrace);
2158 _mirrors = get_mirrors(backtrace);
2159 _names = get_names(backtrace);
2160 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2161 assert(_methods->length() == _bcis->length() &&
2162 _methods->length() == _mirrors->length() &&
2163 _mirrors->length() == _names->length(),
2164 "method and source information arrays should match");
2165
2166 // head is the preallocated backtrace
2167 _head = backtrace();
2168 _backtrace = Handle(thread, _head);
2169 _index = 0;
2170 }
2171
2172 void expand(TRAPS) {
2173 objArrayHandle old_head(THREAD, _head);
2174 PauseNoSafepointVerifier pnsv(&_nsv);
2175
2176 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2177 objArrayHandle new_head(THREAD, head);
2178
2179 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2180 typeArrayHandle new_methods(THREAD, methods);
2181
2182 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2183 typeArrayHandle new_bcis(THREAD, bcis);
2184
2185 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2186 objArrayHandle new_mirrors(THREAD, mirrors);
2187
2188 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2189 typeArrayHandle new_names(THREAD, names);
2190
2191 if (!old_head.is_null()) {
2192 old_head->obj_at_put(trace_next_offset, new_head());
2193 }
2194 new_head->obj_at_put(trace_methods_offset, new_methods());
2195 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2196 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2197 new_head->obj_at_put(trace_names_offset, new_names());
2198 new_head->obj_at_put(trace_hidden_offset, NULL);
2199
2200 _head = new_head();
2201 _methods = new_methods();
2202 _bcis = new_bcis();
2203 _mirrors = new_mirrors();
2204 _names = new_names();
2205 _index = 0;
2206 }
2207
2208 oop backtrace() {
2209 return _backtrace();
2210 }
2211
2212 inline void push(Method* method, int bci, TRAPS) {
2213 // Smear the -1 bci to 0 since the array only holds unsigned
2214 // shorts. The later line number lookup would just smear the -1
2215 // to a 0 even if it could be recorded.
2216 if (bci == SynchronizationEntryBCI) bci = 0;
2217
2218 if (_index >= trace_chunk_size) {
2219 methodHandle mhandle(THREAD, method);
2220 expand(CHECK);
2221 method = mhandle();
2222 }
2223
2224 _methods->ushort_at_put(_index, method->orig_method_idnum());
2225 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2226
2227 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2228 // klass owning the symbols alive so their refcounts aren't decremented.
2229 Symbol* name = method->name();
2230 _names->symbol_at_put(_index, name);
2231
2232 // We need to save the mirrors in the backtrace to keep the class
2233 // from being unloaded while we still have this stack trace.
2234 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2235 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2236 _index++;
2237 }
2238
2239 void set_has_hidden_top_frame(TRAPS) {
2240 if (!_has_hidden_top_frame) {
2241 // It would be nice to add java/lang/Boolean::TRUE here
2242 // to indicate that this backtrace has a hidden top frame.
2243 // But this code is used before TRUE is allocated.
2244 // Therefore let's just use an arbitrary legal oop
2245 // available right here. _methods is a short[].
2246 assert(_methods != NULL, "we need a legal oop");
2247 _has_hidden_top_frame = true;
2248 _head->obj_at_put(trace_hidden_offset, _methods);
2249 }
2250 }
2251 };
2252
2253 struct BacktraceElement : public StackObj {
2254 int _method_id;
2255 int _bci;
2256 int _version;
2257 Symbol* _name;
2258 Handle _mirror;
2259 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2260 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2261 };
2262
2263 class BacktraceIterator : public StackObj {
2264 int _index;
2265 objArrayHandle _result;
2266 objArrayHandle _mirrors;
2267 typeArrayHandle _methods;
2268 typeArrayHandle _bcis;
2269 typeArrayHandle _names;
2270
2271 void init(objArrayHandle result, Thread* thread) {
2272 // Get method id, bci, version and mirror from chunk
2273 _result = result;
2274 if (_result.not_null()) {
2275 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2276 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2277 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2278 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2279 _index = 0;
2280 }
2281 }
2282 public:
2283 BacktraceIterator(objArrayHandle result, Thread* thread) {
2284 init(result, thread);
2285 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2286 }
2287
2288 BacktraceElement next(Thread* thread) {
2289 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2290 _methods->ushort_at(_index),
2291 Backtrace::version_at(_bcis->int_at(_index)),
2292 Backtrace::bci_at(_bcis->int_at(_index)),
2293 _names->symbol_at(_index));
2294 _index++;
2295
2296 if (_index >= java_lang_Throwable::trace_chunk_size) {
2297 int next_offset = java_lang_Throwable::trace_next_offset;
2298 // Get next chunk
2299 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2300 init(result, thread);
2301 }
2302 return e;
2303 }
2304
2305 bool repeat() {
2306 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2307 }
2308 };
2309
2310
2311 // Print stack trace element to resource allocated buffer
2312 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2313 int version, int bci, Symbol* name) {
2314 ResourceMark rm;
2315
2316 // Get strings and string lengths
2317 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2318 const char* klass_name = holder->external_name();
2319 int buf_len = (int)strlen(klass_name);
2320
2321 char* method_name = name->as_C_string();
2322 buf_len += (int)strlen(method_name);
2323
2324 char* source_file_name = NULL;
2325 Symbol* source = Backtrace::get_source_file_name(holder, version);
2326 if (source != NULL) {
2327 source_file_name = source->as_C_string();
2328 buf_len += (int)strlen(source_file_name);
2329 }
2330
2331 char *module_name = NULL, *module_version = NULL;
2332 ModuleEntry* module = holder->module();
2333 if (module->is_named()) {
2334 module_name = module->name()->as_C_string();
2335 buf_len += (int)strlen(module_name);
2336 if (module->version() != NULL) {
2337 module_version = module->version()->as_C_string();
2338 buf_len += (int)strlen(module_version);
2339 }
2340 }
2341
2342 // Allocate temporary buffer with extra space for formatting and line number
2343 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2344
2345 // Print stack trace line in buffer
2346 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2347
2348 // Print module information
2349 if (module_name != NULL) {
2350 if (module_version != NULL) {
2351 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2352 } else {
2353 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2354 }
2355 }
2356
2357 // The method can be NULL if the requested class version is gone
2358 Method* method = holder->method_with_orig_idnum(method_id, version);
2359 if (!version_matches(method, version)) {
2360 strcat(buf, "Redefined)");
2361 } else {
2362 int line_number = Backtrace::get_line_number(method, bci);
2363 if (line_number == -2) {
2364 strcat(buf, "Native Method)");
2365 } else {
2366 if (source_file_name != NULL && (line_number != -1)) {
2367 // Sourcename and linenumber
2368 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2369 } else if (source_file_name != NULL) {
2370 // Just sourcename
2371 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2372 } else {
2373 // Neither sourcename nor linenumber
2374 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2375 }
2376 CompiledMethod* nm = method->code();
2377 if (WizardMode && nm != NULL) {
2378 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2379 }
2380 }
2381 }
2382
2383 st->print_cr("%s", buf);
2384 }
2385
2386 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2387 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2388 int method_id = method->orig_method_idnum();
2389 int version = method->constants()->version();
2390 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2391 }
2392
2393 /**
2394 * Print the throwable message and its stack trace plus all causes by walking the
2395 * cause chain. The output looks the same as of Throwable.printStackTrace().
2396 */
2397 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2398 // First, print the message.
2399 print(throwable(), st);
2400 st->cr();
2401
2402 // Now print the stack trace.
2403 Thread* THREAD = Thread::current();
2404 while (throwable.not_null()) {
2405 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2406 if (result.is_null()) {
2407 st->print_raw_cr("\t<<no stack trace available>>");
2408 return;
2409 }
2410 BacktraceIterator iter(result, THREAD);
2411
2412 while (iter.repeat()) {
2413 BacktraceElement bte = iter.next(THREAD);
2414 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2415 }
2416 {
2417 // Call getCause() which doesn't necessarily return the _cause field.
2418 EXCEPTION_MARK;
2419 JavaValue cause(T_OBJECT);
2420 JavaCalls::call_virtual(&cause,
2421 throwable,
2422 throwable->klass(),
2423 vmSymbols::getCause_name(),
2424 vmSymbols::void_throwable_signature(),
2425 THREAD);
2426 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2427 if (HAS_PENDING_EXCEPTION) {
2428 CLEAR_PENDING_EXCEPTION;
2429 throwable = Handle();
2430 } else {
2431 throwable = Handle(THREAD, (oop) cause.get_jobject());
2432 if (throwable.not_null()) {
2433 st->print("Caused by: ");
2434 print(throwable(), st);
2435 st->cr();
2436 }
2437 }
2438 }
2439 }
2440 }
2441
2442 /**
2443 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2444 */
2445 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2446 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2447 JavaValue result(T_VOID);
2448 JavaCalls::call_virtual(&result,
2449 throwable,
2450 SystemDictionary::Throwable_klass(),
2451 vmSymbols::printStackTrace_name(),
2452 vmSymbols::void_method_signature(),
2453 THREAD);
2454 }
2455
2456 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2457 if (!StackTraceInThrowable) return;
2458 ResourceMark rm(THREAD);
2459
2460 // Start out by clearing the backtrace for this object, in case the VM
2461 // runs out of memory while allocating the stack trace
2462 set_backtrace(throwable(), NULL);
2463 // Clear lazily constructed Java level stacktrace if refilling occurs
2464 // This is unnecessary in 1.7+ but harmless
2465 clear_stacktrace(throwable());
2466
2467 int max_depth = MaxJavaStackTraceDepth;
2468 JavaThread* thread = (JavaThread*)THREAD;
2469
2470 BacktraceBuilder bt(CHECK);
2471
2472 // If there is no Java frame just return the method that was being called
2473 // with bci 0
2474 if (!thread->has_last_Java_frame()) {
2475 if (max_depth >= 1 && method() != NULL) {
2476 bt.push(method(), 0, CHECK);
2477 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2478 set_depth(throwable(), 1);
2479 set_backtrace(throwable(), bt.backtrace());
2480 }
2481 return;
2482 }
2483
2484 // Instead of using vframe directly, this version of fill_in_stack_trace
2485 // basically handles everything by hand. This significantly improved the
2486 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2487 // See bug 6333838 for more details.
2488 // The "ASSERT" here is to verify this method generates the exactly same stack
2489 // trace as utilizing vframe.
2490 #ifdef ASSERT
2491 vframeStream st(thread);
2492 #endif
2493 int total_count = 0;
2494 RegisterMap map(thread, false);
2495 int decode_offset = 0;
2496 CompiledMethod* nm = NULL;
2497 bool skip_fillInStackTrace_check = false;
2498 bool skip_throwableInit_check = false;
2499 bool skip_hidden = !ShowHiddenFrames;
2500
2501 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2502 Method* method = NULL;
2503 int bci = 0;
2504
2505 // Compiled java method case.
2506 if (decode_offset != 0) {
2507 DebugInfoReadStream stream(nm, decode_offset);
2508 decode_offset = stream.read_int();
2509 method = (Method*)nm->metadata_at(stream.read_int());
2510 bci = stream.read_bci();
2511 } else {
2512 if (fr.is_first_frame()) break;
2513 address pc = fr.pc();
2514 if (fr.is_interpreted_frame()) {
2515 address bcp = fr.interpreter_frame_bcp();
2516 method = fr.interpreter_frame_method();
2517 bci = method->bci_from(bcp);
2518 fr = fr.sender(&map);
2519 } else {
2520 CodeBlob* cb = fr.cb();
2521 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2522 // but non nmethod
2523 fr = fr.sender(&map);
2524 if (cb == NULL || !cb->is_compiled()) {
2525 continue;
2526 }
2527 nm = cb->as_compiled_method();
2528 if (nm->method()->is_native()) {
2529 method = nm->method();
2530 bci = 0;
2531 } else {
2532 PcDesc* pd = nm->pc_desc_at(pc);
2533 decode_offset = pd->scope_decode_offset();
2534 // if decode_offset is not equal to 0, it will execute the
2535 // "compiled java method case" at the beginning of the loop.
2536 continue;
2537 }
2538 }
2539 }
2540 #ifdef ASSERT
2541 assert(st.method() == method && st.bci() == bci,
2542 "Wrong stack trace");
2543 st.next();
2544 #endif
2545
2546 // the format of the stacktrace will be:
2547 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2548 // - 0 or more <init> methods for the exception class (skipped)
2549 // - rest of the stack
2550
2551 if (!skip_fillInStackTrace_check) {
2552 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2553 throwable->is_a(method->method_holder())) {
2554 continue;
2555 }
2556 else {
2557 skip_fillInStackTrace_check = true; // gone past them all
2558 }
2559 }
2560 if (!skip_throwableInit_check) {
2561 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2562
2563 // skip <init> methods of the exception class and superclasses
2564 // This is similar to classic VM (before HotSpot).
2565 if (method->is_object_constructor() &&
2566 throwable->is_a(method->method_holder())) {
2567 continue;
2568 } else {
2569 // there are none or we've seen them all - either way stop checking
2570 skip_throwableInit_check = true;
2571 }
2572 }
2573 if (method->is_hidden()) {
2574 if (skip_hidden) {
2575 if (total_count == 0) {
2576 // The top frame will be hidden from the stack trace.
2577 bt.set_has_hidden_top_frame(CHECK);
2578 }
2579 continue;
2580 }
2581 }
2582 bt.push(method, bci, CHECK);
2583 total_count++;
2584 }
2585
2586 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2587
2588 // Put completed stack trace into throwable object
2589 set_backtrace(throwable(), bt.backtrace());
2590 set_depth(throwable(), total_count);
2591 }
2592
2593 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2594 // No-op if stack trace is disabled
2595 if (!StackTraceInThrowable) {
2596 return;
2597 }
2598
2599 // Disable stack traces for some preallocated out of memory errors
2600 if (!Universe::should_fill_in_stack_trace(throwable)) {
2601 return;
2602 }
2603
2604 PRESERVE_EXCEPTION_MARK;
2605
2606 JavaThread* thread = JavaThread::active();
2607 fill_in_stack_trace(throwable, method, thread);
2608 // ignore exceptions thrown during stack trace filling
2609 CLEAR_PENDING_EXCEPTION;
2610 }
2611
2612 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2613 // Allocate stack trace - backtrace is created but not filled in
2614
2615 // No-op if stack trace is disabled
2616 if (!StackTraceInThrowable) return;
2617 BacktraceBuilder bt(CHECK); // creates a backtrace
2618 set_backtrace(throwable(), bt.backtrace());
2619 }
2620
2621
2622 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2623 // Fill in stack trace into preallocated backtrace (no GC)
2624
2625 // No-op if stack trace is disabled
2626 if (!StackTraceInThrowable) return;
2627
2628 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2629
2630 JavaThread* THREAD = JavaThread::current();
2631
2632 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2633 assert(backtrace.not_null(), "backtrace should have been preallocated");
2634
2635 ResourceMark rm(THREAD);
2636 vframeStream st(THREAD);
2637
2638 BacktraceBuilder bt(THREAD, backtrace);
2639
2640 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2641 // methods as preallocated errors aren't created by "java" code.
2642
2643 // fill in as much stack trace as possible
2644 int chunk_count = 0;
2645 for (;!st.at_end(); st.next()) {
2646 bt.push(st.method(), st.bci(), CHECK);
2647 chunk_count++;
2648
2649 // Bail-out for deep stacks
2650 if (chunk_count >= trace_chunk_size) break;
2651 }
2652 set_depth(throwable(), chunk_count);
2653 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2654
2655 // We support the Throwable immutability protocol defined for Java 7.
2656 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2657 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2658 }
2659
2660 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2661 objArrayHandle stack_trace_array_h, TRAPS) {
2662
2663 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2664 THROW(vmSymbols::java_lang_NullPointerException());
2665 }
2666
2667 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2668
2669 if (stack_trace_array_h->length() != depth(throwable())) {
2670 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2671 }
2672
2673 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2674 BacktraceIterator iter(result, THREAD);
2675
2676 int index = 0;
2677 while (iter.repeat()) {
2678 BacktraceElement bte = iter.next(THREAD);
2679
2680 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2681
2682 if (stack_trace_element.is_null()) {
2683 THROW(vmSymbols::java_lang_NullPointerException());
2684 }
2685
2686 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2687 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2688
2689 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2690 method,
2691 bte._version,
2692 bte._bci,
2693 bte._name, CHECK);
2694 }
2695 }
2696
2697 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2698 Thread* THREAD = Thread::current();
2699 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2700 BacktraceIterator iter(result, THREAD);
2701 // No backtrace available.
2702 if (!iter.repeat()) return false;
2703
2704 // If the exception happened in a frame that has been hidden, i.e.,
2705 // omitted from the back trace, we can not compute the message.
2706 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2707 if (hidden != NULL) {
2708 return false;
2709 }
2710
2711 // Get first backtrace element.
2712 BacktraceElement bte = iter.next(THREAD);
2713
2714 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2715 assert(holder != NULL, "first element should be non-null");
2716 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2717
2718 // Original version is no longer available.
2719 if (m == NULL || !version_matches(m, bte._version)) {
2720 return false;
2721 }
2722
2723 *method = m;
2724 *bci = bte._bci;
2725 return true;
2726 }
2727
2728 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2729 // Allocate java.lang.StackTraceElement instance
2730 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2731 assert(k != NULL, "must be loaded in 1.4+");
2732 if (k->should_be_initialized()) {
2733 k->initialize(CHECK_NULL);
2734 }
2735
2736 Handle element = k->allocate_instance_handle(CHECK_NULL);
2737
2738 int version = method->constants()->version();
2739 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2740 return element();
2741 }
2742
2743 void java_lang_StackTraceElement::fill_in(Handle element,
2744 InstanceKlass* holder, const methodHandle& method,
2745 int version, int bci, Symbol* name, TRAPS) {
2746 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2747
2748 ResourceMark rm(THREAD);
2749 HandleMark hm(THREAD);
2750
2751 // Fill in class name
2752 Handle java_class(THREAD, holder->java_mirror());
2753 oop classname = java_lang_Class::name(java_class, CHECK);
2754 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2755 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2756
2757 oop loader = holder->class_loader();
2758 if (loader != NULL) {
2759 oop loader_name = java_lang_ClassLoader::name(loader);
2760 if (loader_name != NULL)
2761 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2762 }
2763
2764 // Fill in method name
2765 oop methodname = StringTable::intern(name, CHECK);
2766 java_lang_StackTraceElement::set_methodName(element(), methodname);
2767
2768 // Fill in module name and version
2769 ModuleEntry* module = holder->module();
2770 if (module->is_named()) {
2771 oop module_name = StringTable::intern(module->name(), CHECK);
2772 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2773 oop module_version;
2774 if (module->version() != NULL) {
2775 module_version = StringTable::intern(module->version(), CHECK);
2776 } else {
2777 module_version = NULL;
2778 }
2779 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2780 }
2781
2782 if (method() == NULL || !version_matches(method(), version)) {
2783 // The method was redefined, accurate line number information isn't available
2784 java_lang_StackTraceElement::set_fileName(element(), NULL);
2785 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2786 } else {
2787 Symbol* source;
2788 oop source_file;
2789 int line_number;
2790 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2791
2792 java_lang_StackTraceElement::set_fileName(element(), source_file);
2793 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2794 }
2795 }
2796
2797 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2798 InstanceKlass* holder,
2799 int version,
2800 const methodHandle& method,
2801 int bci,
2802 Symbol*& source,
2803 oop& source_file,
2804 int& line_number, TRAPS) {
2805 // Fill in source file name and line number.
2806 source = Backtrace::get_source_file_name(holder, version);
2807 source_file = java_lang_Class::source_file(java_class());
2808 if (source != NULL) {
2809 // Class was not redefined. We can trust its cache if set,
2810 // else we have to initialize it.
2811 if (source_file == NULL) {
2812 source_file = StringTable::intern(source, CHECK);
2813 java_lang_Class::set_source_file(java_class(), source_file);
2814 }
2815 } else {
2816 // Class was redefined. Dump the cache if it was set.
2817 if (source_file != NULL) {
2818 source_file = NULL;
2819 java_lang_Class::set_source_file(java_class(), source_file);
2820 }
2821 }
2822 line_number = Backtrace::get_line_number(method(), bci);
2823 }
2824
2825 #if INCLUDE_JVMCI
2826 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2827 Symbol*& filename, int& line_number, TRAPS) {
2828 ResourceMark rm(THREAD);
2829 HandleMark hm(THREAD);
2830
2831 filename = NULL;
2832 line_number = -1;
2833
2834 oop source_file;
2835 int version = method->constants()->version();
2836 InstanceKlass* holder = method->method_holder();
2837 Handle java_class(THREAD, holder->java_mirror());
2838 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2839 }
2840 #endif // INCLUDE_JVMCI
2841
2842 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2843 HandleMark hm(THREAD);
2844 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2845 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2846 // we should expand MemberName::name when Throwable uses StackTrace
2847 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2848 return method;
2849 }
2850
2851 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2852 // set Method* or mid/cpref
2853 HandleMark hm(THREAD);
2854 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2855 InstanceKlass* ik = method->method_holder();
2856 CallInfo info(method(), ik, CHECK);
2857 MethodHandles::init_method_MemberName(mname, info);
2858 // set bci
2859 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2860 // method may be redefined; store the version
2861 int version = method->constants()->version();
2862 assert((jushort)version == version, "version should be short");
2863 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2864 }
2865
2866 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2867 ResourceMark rm(THREAD);
2868 HandleMark hm(THREAD);
2869 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2870 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2871 InstanceKlass* holder = InstanceKlass::cast(clazz);
2872 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2873
2874 short version = stackFrame->short_field(_version_offset);
2875 int bci = stackFrame->int_field(_bci_offset);
2876 Symbol* name = method->name();
2877 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2878 version, bci, name, CHECK);
2879 }
2880
2881 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2882 macro(_memberName_offset, k, "memberName", object_signature, false); \
2883 macro(_bci_offset, k, "bci", int_signature, false)
2884
2885 void java_lang_StackFrameInfo::compute_offsets() {
2886 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2887 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2888 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2889 }
2890
2891 #if INCLUDE_CDS
2892 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2893 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2894 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2895 }
2896 #endif
2897
2898 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2899 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2900 macro(_locals_offset, k, "locals", object_array_signature, false); \
2901 macro(_operands_offset, k, "operands", object_array_signature, false); \
2902 macro(_mode_offset, k, "mode", int_signature, false)
2903
2904 void java_lang_LiveStackFrameInfo::compute_offsets() {
2905 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2906 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2907 }
2908
2909 #if INCLUDE_CDS
2910 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2911 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2912 }
2913 #endif
2914
2915 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2916 macro(override_offset, k, "override", bool_signature, false)
2917
2918 void java_lang_reflect_AccessibleObject::compute_offsets() {
2919 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2920 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2921 }
2922
2923 #if INCLUDE_CDS
2924 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2925 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2926 }
2927 #endif
2928
2929 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2930 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2931 return (jboolean) reflect->bool_field(override_offset);
2932 }
2933
2934 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2935 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2936 reflect->bool_field_put(override_offset, (int) value);
2937 }
2938
2939 #define METHOD_FIELDS_DO(macro) \
2940 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2941 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2942 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2943 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2944 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2945 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2946 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2947 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2948 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2949 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2950 macro(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2951
2952 void java_lang_reflect_Method::compute_offsets() {
2953 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2954 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2955 }
2956
2957 #if INCLUDE_CDS
2958 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2959 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2960 }
2961 #endif
2962
2963 Handle java_lang_reflect_Method::create(TRAPS) {
2964 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2965 Klass* klass = SystemDictionary::reflect_Method_klass();
2966 // This class is eagerly initialized during VM initialization, since we keep a refence
2967 // to one of the methods
2968 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2969 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2970 }
2971
2972 oop java_lang_reflect_Method::clazz(oop reflect) {
2973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974 return reflect->obj_field(clazz_offset);
2975 }
2976
2977 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2979 reflect->obj_field_put(clazz_offset, value);
2980 }
2981
2982 int java_lang_reflect_Method::slot(oop reflect) {
2983 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2984 return reflect->int_field(slot_offset);
2985 }
2986
2987 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2988 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2989 reflect->int_field_put(slot_offset, value);
2990 }
2991
2992 void java_lang_reflect_Method::set_name(oop method, oop value) {
2993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2994 method->obj_field_put(name_offset, value);
2995 }
2996
2997 oop java_lang_reflect_Method::return_type(oop method) {
2998 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2999 return method->obj_field(returnType_offset);
3000 }
3001
3002 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3004 method->obj_field_put(returnType_offset, value);
3005 }
3006
3007 oop java_lang_reflect_Method::parameter_types(oop method) {
3008 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3009 return method->obj_field(parameterTypes_offset);
3010 }
3011
3012 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3013 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3014 method->obj_field_put(parameterTypes_offset, value);
3015 }
3016
3017 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3018 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3019 method->obj_field_put(exceptionTypes_offset, value);
3020 }
3021
3022 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3023 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3024 method->int_field_put(modifiers_offset, value);
3025 }
3026
3027 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3028 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3029 method->obj_field_put(signature_offset, value);
3030 }
3031
3032 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3033 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3034 method->obj_field_put(annotations_offset, value);
3035 }
3036
3037 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3038 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3039 method->obj_field_put(parameter_annotations_offset, value);
3040 }
3041
3042 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3043 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3044 method->obj_field_put(annotation_default_offset, value);
3045 }
3046
3047 #define CONSTRUCTOR_FIELDS_DO(macro) \
3048 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3049 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3050 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3051 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3052 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3053 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3054 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3055 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3056
3057 void java_lang_reflect_Constructor::compute_offsets() {
3058 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
3059 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3060 }
3061
3062 #if INCLUDE_CDS
3063 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3064 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3065 }
3066 #endif
3067
3068 Handle java_lang_reflect_Constructor::create(TRAPS) {
3069 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3070 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3071 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3072 InstanceKlass* ik = InstanceKlass::cast(k);
3073 // Ensure it is initialized
3074 ik->initialize(CHECK_NH);
3075 return ik->allocate_instance_handle(THREAD);
3076 }
3077
3078 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3080 return reflect->obj_field(clazz_offset);
3081 }
3082
3083 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3085 reflect->obj_field_put(clazz_offset, value);
3086 }
3087
3088 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3089 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3090 return constructor->obj_field(parameterTypes_offset);
3091 }
3092
3093 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3094 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3095 constructor->obj_field_put(parameterTypes_offset, value);
3096 }
3097
3098 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3099 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3100 constructor->obj_field_put(exceptionTypes_offset, value);
3101 }
3102
3103 int java_lang_reflect_Constructor::slot(oop reflect) {
3104 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3105 return reflect->int_field(slot_offset);
3106 }
3107
3108 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3109 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3110 reflect->int_field_put(slot_offset, value);
3111 }
3112
3113 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3114 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3115 constructor->int_field_put(modifiers_offset, value);
3116 }
3117
3118 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3119 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3120 constructor->obj_field_put(signature_offset, value);
3121 }
3122
3123 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3124 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3125 constructor->obj_field_put(annotations_offset, value);
3126 }
3127
3128 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3129 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3130 method->obj_field_put(parameter_annotations_offset, value);
3131 }
3132
3133 #define FIELD_FIELDS_DO(macro) \
3134 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3135 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3136 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3137 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3138 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3139 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3140 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3141
3142 void java_lang_reflect_Field::compute_offsets() {
3143 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3144 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3145 }
3146
3147 #if INCLUDE_CDS
3148 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3149 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3150 }
3151 #endif
3152
3153 Handle java_lang_reflect_Field::create(TRAPS) {
3154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3155 Symbol* name = vmSymbols::java_lang_reflect_Field();
3156 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3157 InstanceKlass* ik = InstanceKlass::cast(k);
3158 // Ensure it is initialized
3159 ik->initialize(CHECK_NH);
3160 return ik->allocate_instance_handle(THREAD);
3161 }
3162
3163 oop java_lang_reflect_Field::clazz(oop reflect) {
3164 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3165 return reflect->obj_field(clazz_offset);
3166 }
3167
3168 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3169 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3170 reflect->obj_field_put(clazz_offset, value);
3171 }
3172
3173 oop java_lang_reflect_Field::name(oop field) {
3174 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3175 return field->obj_field(name_offset);
3176 }
3177
3178 void java_lang_reflect_Field::set_name(oop field, oop value) {
3179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3180 field->obj_field_put(name_offset, value);
3181 }
3182
3183 oop java_lang_reflect_Field::type(oop field) {
3184 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3185 return field->obj_field(type_offset);
3186 }
3187
3188 void java_lang_reflect_Field::set_type(oop field, oop value) {
3189 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3190 field->obj_field_put(type_offset, value);
3191 }
3192
3193 int java_lang_reflect_Field::slot(oop reflect) {
3194 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3195 return reflect->int_field(slot_offset);
3196 }
3197
3198 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3199 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3200 reflect->int_field_put(slot_offset, value);
3201 }
3202
3203 int java_lang_reflect_Field::modifiers(oop field) {
3204 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3205 return field->int_field(modifiers_offset);
3206 }
3207
3208 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3210 field->int_field_put(modifiers_offset, value);
3211 }
3212
3213 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3214 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3215 field->obj_field_put(signature_offset, value);
3216 }
3217
3218 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3219 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3220 field->obj_field_put(annotations_offset, value);
3221 }
3222
3223 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3224 // Allocate java.lang.reflect.RecordComponent instance
3225 HandleMark hm(THREAD);
3226 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3227 assert(ik != NULL, "must be loaded");
3228 ik->initialize(CHECK_NULL);
3229
3230 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3231
3232 Handle decl_class(THREAD, holder->java_mirror());
3233 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3234
3235 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3236 oop component_name = StringTable::intern(name, CHECK_NULL);
3237 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3238
3239 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3240 Handle component_type_h =
3241 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3242 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3243
3244 Method* accessor_method = NULL;
3245 {
3246 // Prepend "()" to type to create the full method signature.
3247 ResourceMark rm(THREAD);
3248 int sig_len = type->utf8_length() + 3; // "()" and null char
3249 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3250 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3251 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3252 accessor_method = holder->find_instance_method(name, full_sig, Klass::find_private);
3253 }
3254
3255 if (accessor_method != NULL) {
3256 methodHandle method(THREAD, accessor_method);
3257 oop m = Reflection::new_method(method, false, CHECK_NULL);
3258 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3259 } else {
3260 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3261 }
3262
3263 int sig_index = component->generic_signature_index();
3264 if (sig_index > 0) {
3265 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3266 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3267 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3268 } else {
3269 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3270 }
3271
3272 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3273 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3274
3275 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3276 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3277
3278 return element();
3279 }
3280
3281 #define CONSTANTPOOL_FIELDS_DO(macro) \
3282 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3283
3284 void reflect_ConstantPool::compute_offsets() {
3285 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3286 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3287 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3288 }
3289
3290 #if INCLUDE_CDS
3291 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3292 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3293 }
3294 #endif
3295
3296 #define PARAMETER_FIELDS_DO(macro) \
3297 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3298 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3299 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3300 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3301
3302 void java_lang_reflect_Parameter::compute_offsets() {
3303 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3304 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3305 }
3306
3307 #if INCLUDE_CDS
3308 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3309 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3310 }
3311 #endif
3312
3313 Handle java_lang_reflect_Parameter::create(TRAPS) {
3314 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3315 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3316 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3317 InstanceKlass* ik = InstanceKlass::cast(k);
3318 // Ensure it is initialized
3319 ik->initialize(CHECK_NH);
3320 return ik->allocate_instance_handle(THREAD);
3321 }
3322
3323 oop java_lang_reflect_Parameter::name(oop param) {
3324 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3325 return param->obj_field(name_offset);
3326 }
3327
3328 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3329 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3330 param->obj_field_put(name_offset, value);
3331 }
3332
3333 int java_lang_reflect_Parameter::modifiers(oop param) {
3334 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3335 return param->int_field(modifiers_offset);
3336 }
3337
3338 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3339 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3340 param->int_field_put(modifiers_offset, value);
3341 }
3342
3343 int java_lang_reflect_Parameter::index(oop param) {
3344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3345 return param->int_field(index_offset);
3346 }
3347
3348 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3350 param->int_field_put(index_offset, value);
3351 }
3352
3353 oop java_lang_reflect_Parameter::executable(oop param) {
3354 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3355 return param->obj_field(executable_offset);
3356 }
3357
3358 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3359 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3360 param->obj_field_put(executable_offset, value);
3361 }
3362
3363
3364 int java_lang_Module::loader_offset;
3365 int java_lang_Module::name_offset;
3366 int java_lang_Module::_module_entry_offset = -1;
3367
3368 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3369 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3370 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3371 vmSymbols::java_lang_module_init_signature(),
3372 loader, module_name, CHECK_NH);
3373 }
3374
3375 #define MODULE_FIELDS_DO(macro) \
3376 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3377 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3378
3379 void java_lang_Module::compute_offsets() {
3380 InstanceKlass* k = SystemDictionary::Module_klass();
3381 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3382 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3383 }
3384
3385 #if INCLUDE_CDS
3386 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3387 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3388 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3389 }
3390 #endif
3391
3392 oop java_lang_Module::loader(oop module) {
3393 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3394 return module->obj_field(loader_offset);
3395 }
3396
3397 void java_lang_Module::set_loader(oop module, oop value) {
3398 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3399 module->obj_field_put(loader_offset, value);
3400 }
3401
3402 oop java_lang_Module::name(oop module) {
3403 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3404 return module->obj_field(name_offset);
3405 }
3406
3407 void java_lang_Module::set_name(oop module, oop value) {
3408 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3409 module->obj_field_put(name_offset, value);
3410 }
3411
3412 ModuleEntry* java_lang_Module::module_entry(oop module) {
3413 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3414 assert(module != NULL, "module can't be null");
3415 assert(oopDesc::is_oop(module), "module must be oop");
3416
3417 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3418 if (module_entry == NULL) {
3419 // If the inject field containing the ModuleEntry* is null then return the
3420 // class loader's unnamed module.
3421 oop loader = java_lang_Module::loader(module);
3422 Handle h_loader = Handle(Thread::current(), loader);
3423 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3424 return loader_cld->unnamed_module();
3425 }
3426 return module_entry;
3427 }
3428
3429 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3430 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3431 assert(module != NULL, "module can't be null");
3432 assert(oopDesc::is_oop(module), "module must be oop");
3433 module->address_field_put(_module_entry_offset, (address)module_entry);
3434 }
3435
3436 Handle reflect_ConstantPool::create(TRAPS) {
3437 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3438 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3439 // Ensure it is initialized
3440 k->initialize(CHECK_NH);
3441 return k->allocate_instance_handle(THREAD);
3442 }
3443
3444
3445 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3446 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3447 oop mirror = value->pool_holder()->java_mirror();
3448 // Save the mirror to get back the constant pool.
3449 reflect->obj_field_put(_oop_offset, mirror);
3450 }
3451
3452 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3453 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3454
3455 oop mirror = reflect->obj_field(_oop_offset);
3456 Klass* k = java_lang_Class::as_Klass(mirror);
3457 assert(k->is_instance_klass(), "Must be");
3458
3459 // Get the constant pool back from the klass. Since class redefinition
3460 // merges the new constant pool into the old, this is essentially the
3461 // same constant pool as the original. If constant pool merging is
3462 // no longer done in the future, this will have to change to save
3463 // the original.
3464 return InstanceKlass::cast(k)->constants();
3465 }
3466
3467 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3468 macro(_base_offset, k, "base", object_signature, false)
3469
3470 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3471 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3472 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3473 }
3474
3475 #if INCLUDE_CDS
3476 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3477 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3478 }
3479 #endif
3480
3481 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3482 Klass* k = SystemDictionary::box_klass(type);
3483 if (k == NULL) return NULL;
3484 InstanceKlass* ik = InstanceKlass::cast(k);
3485 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3486 return ik->allocate_instance(THREAD);
3487 }
3488
3489
3490 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3491 oop box = initialize_and_allocate(type, CHECK_NULL);
3492 if (box == NULL) return NULL;
3493 switch (type) {
3494 case T_BOOLEAN:
3495 box->bool_field_put(value_offset, value->z);
3496 break;
3497 case T_CHAR:
3498 box->char_field_put(value_offset, value->c);
3499 break;
3500 case T_FLOAT:
3501 box->float_field_put(value_offset, value->f);
3502 break;
3503 case T_DOUBLE:
3504 box->double_field_put(long_value_offset, value->d);
3505 break;
3506 case T_BYTE:
3507 box->byte_field_put(value_offset, value->b);
3508 break;
3509 case T_SHORT:
3510 box->short_field_put(value_offset, value->s);
3511 break;
3512 case T_INT:
3513 box->int_field_put(value_offset, value->i);
3514 break;
3515 case T_LONG:
3516 box->long_field_put(long_value_offset, value->j);
3517 break;
3518 default:
3519 return NULL;
3520 }
3521 return box;
3522 }
3523
3524
3525 BasicType java_lang_boxing_object::basic_type(oop box) {
3526 if (box == NULL) return T_ILLEGAL;
3527 BasicType type = SystemDictionary::box_klass_type(box->klass());
3528 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3529 return T_ILLEGAL;
3530 return type;
3531 }
3532
3533
3534 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3535 BasicType type = SystemDictionary::box_klass_type(box->klass());
3536 switch (type) {
3537 case T_BOOLEAN:
3538 value->z = box->bool_field(value_offset);
3539 break;
3540 case T_CHAR:
3541 value->c = box->char_field(value_offset);
3542 break;
3543 case T_FLOAT:
3544 value->f = box->float_field(value_offset);
3545 break;
3546 case T_DOUBLE:
3547 value->d = box->double_field(long_value_offset);
3548 break;
3549 case T_BYTE:
3550 value->b = box->byte_field(value_offset);
3551 break;
3552 case T_SHORT:
3553 value->s = box->short_field(value_offset);
3554 break;
3555 case T_INT:
3556 value->i = box->int_field(value_offset);
3557 break;
3558 case T_LONG:
3559 value->j = box->long_field(long_value_offset);
3560 break;
3561 default:
3562 return T_ILLEGAL;
3563 } // end switch
3564 return type;
3565 }
3566
3567
3568 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3569 BasicType type = SystemDictionary::box_klass_type(box->klass());
3570 switch (type) {
3571 case T_BOOLEAN:
3572 box->bool_field_put(value_offset, value->z);
3573 break;
3574 case T_CHAR:
3575 box->char_field_put(value_offset, value->c);
3576 break;
3577 case T_FLOAT:
3578 box->float_field_put(value_offset, value->f);
3579 break;
3580 case T_DOUBLE:
3581 box->double_field_put(long_value_offset, value->d);
3582 break;
3583 case T_BYTE:
3584 box->byte_field_put(value_offset, value->b);
3585 break;
3586 case T_SHORT:
3587 box->short_field_put(value_offset, value->s);
3588 break;
3589 case T_INT:
3590 box->int_field_put(value_offset, value->i);
3591 break;
3592 case T_LONG:
3593 box->long_field_put(long_value_offset, value->j);
3594 break;
3595 default:
3596 return T_ILLEGAL;
3597 } // end switch
3598 return type;
3599 }
3600
3601
3602 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3603 switch (type) {
3604 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3605 case T_CHAR: st->print("%d", value->c); break;
3606 case T_BYTE: st->print("%d", value->b); break;
3607 case T_SHORT: st->print("%d", value->s); break;
3608 case T_INT: st->print("%d", value->i); break;
3609 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3610 case T_FLOAT: st->print("%f", value->f); break;
3611 case T_DOUBLE: st->print("%lf", value->d); break;
3612 default: st->print("type %d?", type); break;
3613 }
3614 }
3615
3616 // Support for java_lang_ref_Reference
3617
3618 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3619 assert(obj != NULL, "sanity");
3620 if (offset != java_lang_ref_Reference::referent_offset) {
3621 return false;
3622 }
3623
3624 Klass* k = obj->klass();
3625 if (!k->is_instance_klass()) {
3626 return false;
3627 }
3628
3629 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3630 bool is_reference = ik->reference_type() != REF_NONE;
3631 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3632 return is_reference;
3633 }
3634
3635 // Support for java_lang_ref_SoftReference
3636 //
3637
3638 #define SOFTREFERENCE_FIELDS_DO(macro) \
3639 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3640 macro(static_clock_offset, k, "clock", long_signature, true)
3641
3642 void java_lang_ref_SoftReference::compute_offsets() {
3643 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3644 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3645 }
3646
3647 #if INCLUDE_CDS
3648 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3649 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3650 }
3651 #endif
3652
3653 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3654 return ref->long_field(timestamp_offset);
3655 }
3656
3657 jlong java_lang_ref_SoftReference::clock() {
3658 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3659 oop base = ik->static_field_base_raw();
3660 return base->long_field(static_clock_offset);
3661 }
3662
3663 void java_lang_ref_SoftReference::set_clock(jlong value) {
3664 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3665 oop base = ik->static_field_base_raw();
3666 base->long_field_put(static_clock_offset, value);
3667 }
3668
3669 // Support for java_lang_invoke_DirectMethodHandle
3670
3671 int java_lang_invoke_DirectMethodHandle::_member_offset;
3672
3673 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3674 oop member_name = NULL;
3675 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3676 "a DirectMethodHandle oop is expected");
3677 return dmh->obj_field(member_offset_in_bytes());
3678 }
3679
3680 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3681 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3682
3683 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3684 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3685 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3686 }
3687
3688 #if INCLUDE_CDS
3689 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3690 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3691 }
3692 #endif
3693
3694 // Support for java_lang_invoke_MethodHandle
3695
3696 int java_lang_invoke_MethodHandle::_type_offset;
3697 int java_lang_invoke_MethodHandle::_form_offset;
3698
3699 int java_lang_invoke_MemberName::_clazz_offset;
3700 int java_lang_invoke_MemberName::_name_offset;
3701 int java_lang_invoke_MemberName::_type_offset;
3702 int java_lang_invoke_MemberName::_flags_offset;
3703 int java_lang_invoke_MemberName::_method_offset;
3704 int java_lang_invoke_MemberName::_vmindex_offset;
3705
3706 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3707 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3708
3709 int java_lang_invoke_LambdaForm::_vmentry_offset;
3710
3711 #define METHODHANDLE_FIELDS_DO(macro) \
3712 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3713 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3714
3715 void java_lang_invoke_MethodHandle::compute_offsets() {
3716 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3717 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3718 }
3719
3720 #if INCLUDE_CDS
3721 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3722 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3723 }
3724 #endif
3725
3726 #define MEMBERNAME_FIELDS_DO(macro) \
3727 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3728 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3729 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3730 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3731 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3732
3733 void java_lang_invoke_MemberName::compute_offsets() {
3734 InstanceKlass* k = SystemDictionary::MemberName_klass();
3735 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3736 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3737 }
3738
3739 #if INCLUDE_CDS
3740 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3741 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3742 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3743 }
3744 #endif
3745
3746 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3747 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3748 assert(k != NULL, "jdk mismatch");
3749 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3750 }
3751
3752 #if INCLUDE_CDS
3753 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3754 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3755 }
3756 #endif
3757
3758 #define LAMBDAFORM_FIELDS_DO(macro) \
3759 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3760
3761 void java_lang_invoke_LambdaForm::compute_offsets() {
3762 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3763 assert (k != NULL, "jdk mismatch");
3764 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3765 }
3766
3767 #if INCLUDE_CDS
3768 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3769 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3770 }
3771 #endif
3772
3773 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3774 return obj != NULL && is_subclass(obj->klass());
3775 }
3776
3777
3778 oop java_lang_invoke_MethodHandle::type(oop mh) {
3779 return mh->obj_field(_type_offset);
3780 }
3781
3782 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3783 mh->obj_field_put(_type_offset, mtype);
3784 }
3785
3786 oop java_lang_invoke_MethodHandle::form(oop mh) {
3787 assert(_form_offset != 0, "");
3788 return mh->obj_field(_form_offset);
3789 }
3790
3791 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3792 assert(_form_offset != 0, "");
3793 mh->obj_field_put(_form_offset, lform);
3794 }
3795
3796 /// MemberName accessors
3797
3798 oop java_lang_invoke_MemberName::clazz(oop mname) {
3799 assert(is_instance(mname), "wrong type");
3800 return mname->obj_field(_clazz_offset);
3801 }
3802
3803 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3804 assert(is_instance(mname), "wrong type");
3805 mname->obj_field_put(_clazz_offset, clazz);
3806 }
3807
3808 oop java_lang_invoke_MemberName::name(oop mname) {
3809 assert(is_instance(mname), "wrong type");
3810 return mname->obj_field(_name_offset);
3811 }
3812
3813 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3814 assert(is_instance(mname), "wrong type");
3815 mname->obj_field_put(_name_offset, name);
3816 }
3817
3818 oop java_lang_invoke_MemberName::type(oop mname) {
3819 assert(is_instance(mname), "wrong type");
3820 return mname->obj_field(_type_offset);
3821 }
3822
3823 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3824 assert(is_instance(mname), "wrong type");
3825 mname->obj_field_put(_type_offset, type);
3826 }
3827
3828 int java_lang_invoke_MemberName::flags(oop mname) {
3829 assert(is_instance(mname), "wrong type");
3830 return mname->int_field(_flags_offset);
3831 }
3832
3833 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3834 assert(is_instance(mname), "wrong type");
3835 mname->int_field_put(_flags_offset, flags);
3836 }
3837
3838
3839 // Return vmtarget from ResolvedMethodName method field through indirection
3840 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3841 assert(is_instance(mname), "wrong type");
3842 oop method = mname->obj_field(_method_offset);
3843 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3844 }
3845
3846 bool java_lang_invoke_MemberName::is_method(oop mname) {
3847 assert(is_instance(mname), "must be MemberName");
3848 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
3849 }
3850
3851 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3852 assert(is_instance(mname), "wrong type");
3853 mname->obj_field_put(_method_offset, resolved_method);
3854 }
3855
3856 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3857 assert(is_instance(mname), "wrong type");
3858 return (intptr_t) mname->address_field(_vmindex_offset);
3859 }
3860
3861 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3862 assert(is_instance(mname), "wrong type");
3863 mname->address_field_put(_vmindex_offset, (address) index);
3864 }
3865
3866
3867 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3868 assert(is_instance(resolved_method), "wrong type");
3869 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3870 assert(m->is_method(), "must be");
3871 return m;
3872 }
3873
3874 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3875 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3876 assert(is_instance(resolved_method), "wrong type");
3877 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3878 }
3879
3880 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3881 assert(is_instance(resolved_method), "wrong type");
3882 resolved_method->obj_field_put(_vmholder_offset, holder);
3883 }
3884
3885 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3886 const Method* method = m();
3887
3888 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3889 oop resolved_method = ResolvedMethodTable::find_method(method);
3890 if (resolved_method != NULL) {
3891 return resolved_method;
3892 }
3893
3894 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3895 if (!k->is_initialized()) {
3896 k->initialize(CHECK_NULL);
3897 }
3898
3899 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3900
3901 NoSafepointVerifier nsv;
3902
3903 if (method->is_old()) {
3904 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3905 method->get_new_method();
3906 }
3907
3908 InstanceKlass* holder = method->method_holder();
3909
3910 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3911 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3912 // distinct loaders) to ensure the metadata is kept alive.
3913 // This mirror may be different than the one in clazz field.
3914 set_vmholder(new_resolved_method, holder->java_mirror());
3915
3916 // Set flag in class to indicate this InstanceKlass has entries in the table
3917 // to avoid walking table during redefinition if none of the redefined classes
3918 // have any membernames in the table.
3919 holder->set_has_resolved_methods();
3920
3921 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3922 }
3923
3924 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3925 assert(is_instance(lform), "wrong type");
3926 return lform->obj_field(_vmentry_offset);
3927 }
3928
3929
3930 // Support for java_lang_invoke_MethodType
3931
3932 int java_lang_invoke_MethodType::_rtype_offset;
3933 int java_lang_invoke_MethodType::_ptypes_offset;
3934
3935 #define METHODTYPE_FIELDS_DO(macro) \
3936 macro(_rtype_offset, k, "rtype", class_signature, false); \
3937 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3938
3939 void java_lang_invoke_MethodType::compute_offsets() {
3940 InstanceKlass* k = SystemDictionary::MethodType_klass();
3941 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3942 }
3943
3944 #if INCLUDE_CDS
3945 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3946 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3947 }
3948 #endif
3949
3950 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3951 st->print("(");
3952 objArrayOop pts = ptypes(mt);
3953 for (int i = 0, limit = pts->length(); i < limit; i++) {
3954 java_lang_Class::print_signature(pts->obj_at(i), st);
3955 }
3956 st->print(")");
3957 java_lang_Class::print_signature(rtype(mt), st);
3958 }
3959
3960 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3961 ResourceMark rm;
3962 stringStream buffer(128);
3963 print_signature(mt, &buffer);
3964 const char* sigstr = buffer.base();
3965 int siglen = (int) buffer.size();
3966 Symbol *name;
3967 if (!intern_if_not_found) {
3968 name = SymbolTable::probe(sigstr, siglen);
3969 } else {
3970 name = SymbolTable::new_symbol(sigstr, siglen);
3971 }
3972 return name;
3973 }
3974
3975 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3976 if (mt1 == mt2)
3977 return true;
3978 if (rtype(mt1) != rtype(mt2))
3979 return false;
3980 if (ptype_count(mt1) != ptype_count(mt2))
3981 return false;
3982 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3983 if (ptype(mt1, i) != ptype(mt2, i))
3984 return false;
3985 }
3986 return true;
3987 }
3988
3989 oop java_lang_invoke_MethodType::rtype(oop mt) {
3990 assert(is_instance(mt), "must be a MethodType");
3991 return mt->obj_field(_rtype_offset);
3992 }
3993
3994 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3995 assert(is_instance(mt), "must be a MethodType");
3996 return (objArrayOop) mt->obj_field(_ptypes_offset);
3997 }
3998
3999 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4000 return ptypes(mt)->obj_at(idx);
4001 }
4002
4003 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4004 return ptypes(mt)->length();
4005 }
4006
4007 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4008 objArrayOop pts = ptypes(mt);
4009 int count = pts->length();
4010 int slots = 0;
4011 for (int i = 0; i < count; i++) {
4012 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4013 slots += type2size[bt];
4014 }
4015 return slots;
4016 }
4017
4018 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4019 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4020 return type2size[bt];
4021 }
4022
4023
4024 // Support for java_lang_invoke_CallSite
4025
4026 int java_lang_invoke_CallSite::_target_offset;
4027 int java_lang_invoke_CallSite::_context_offset;
4028
4029 #define CALLSITE_FIELDS_DO(macro) \
4030 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4031 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4032
4033 void java_lang_invoke_CallSite::compute_offsets() {
4034 InstanceKlass* k = SystemDictionary::CallSite_klass();
4035 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4036 }
4037
4038 #if INCLUDE_CDS
4039 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4040 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4041 }
4042 #endif
4043
4044 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4045 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4046
4047 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4048 return dep_oop;
4049 }
4050
4051 // Support for java_lang_invoke_ConstantCallSite
4052
4053 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4054
4055 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4056 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4057
4058 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4059 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
4060 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4061 }
4062
4063 #if INCLUDE_CDS
4064 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4065 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4066 }
4067 #endif
4068
4069 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4070
4071 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4072 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4073
4074 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4075 InstanceKlass* k = SystemDictionary::Context_klass();
4076 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4077 }
4078
4079 #if INCLUDE_CDS
4080 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4081 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4082 }
4083 #endif
4084
4085 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4086 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4087 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4088 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4089 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4090 return dep_ctx;
4091 }
4092
4093 // Support for java_security_AccessControlContext
4094
4095 int java_security_AccessControlContext::_context_offset = 0;
4096 int java_security_AccessControlContext::_privilegedContext_offset = 0;
4097 int java_security_AccessControlContext::_isPrivileged_offset = 0;
4098 int java_security_AccessControlContext::_isAuthorized_offset = -1;
4099
4100 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4101 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4102 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4103 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4104 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4105
4106 void java_security_AccessControlContext::compute_offsets() {
4107 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4108 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4109 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4110 }
4111
4112 #if INCLUDE_CDS
4113 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4114 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4115 }
4116 #endif
4117
4118 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4119 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4120 assert(_isAuthorized_offset != -1, "offsets should have been initialized");
4121 // Ensure klass is initialized
4122 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4123 // Allocate result
4124 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4125 // Fill in values
4126 result->obj_field_put(_context_offset, context());
4127 result->obj_field_put(_privilegedContext_offset, privileged_context());
4128 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4129 // whitelist AccessControlContexts created by the JVM
4130 result->bool_field_put(_isAuthorized_offset, true);
4131 return result;
4132 }
4133
4134
4135 // Support for java_lang_ClassLoader
4136
4137 bool java_lang_ClassLoader::offsets_computed = false;
4138 int java_lang_ClassLoader::_loader_data_offset = -1;
4139 int java_lang_ClassLoader::parallelCapable_offset = -1;
4140 int java_lang_ClassLoader::name_offset = -1;
4141 int java_lang_ClassLoader::nameAndId_offset = -1;
4142 int java_lang_ClassLoader::unnamedModule_offset = -1;
4143
4144 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4145 assert(loader != NULL, "loader must not be NULL");
4146 assert(oopDesc::is_oop(loader), "loader must be oop");
4147 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4148 }
4149
4150 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4151 assert(loader != NULL, "loader must not be NULL");
4152 assert(oopDesc::is_oop(loader), "loader must be oop");
4153 return RawAccess<>::load_at(loader, _loader_data_offset);
4154 }
4155
4156 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4157 assert(loader != NULL, "loader must not be NULL");
4158 assert(oopDesc::is_oop(loader), "loader must be oop");
4159 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4160 }
4161
4162 #define CLASSLOADER_FIELDS_DO(macro) \
4163 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4164 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4165 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4166 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4167 macro(parent_offset, k1, "parent", classloader_signature, false)
4168
4169 void java_lang_ClassLoader::compute_offsets() {
4170 assert(!offsets_computed, "offsets should be initialized only once");
4171 offsets_computed = true;
4172
4173 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4174 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4175
4176 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4177 }
4178
4179 #if INCLUDE_CDS
4180 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4181 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4182 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4183 }
4184 #endif
4185
4186 oop java_lang_ClassLoader::parent(oop loader) {
4187 assert(is_instance(loader), "loader must be oop");
4188 return loader->obj_field(parent_offset);
4189 }
4190
4191 // Returns the name field of this class loader. If the name field has not
4192 // been set, null will be returned.
4193 oop java_lang_ClassLoader::name(oop loader) {
4194 assert(is_instance(loader), "loader must be oop");
4195 return loader->obj_field(name_offset);
4196 }
4197
4198 // Returns the nameAndId field of this class loader. The format is
4199 // as follows:
4200 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4201 // If the defining loader has no name then <qualified-class-name> @<id>
4202 // If built-in loader, then omit '@<id>' as there is only one instance.
4203 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4204 oop java_lang_ClassLoader::nameAndId(oop loader) {
4205 assert(is_instance(loader), "loader must be oop");
4206 return loader->obj_field(nameAndId_offset);
4207 }
4208
4209 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4210 assert(is_instance(loader), "loader must be oop");
4211 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4212 oop acl = loader;
4213 debug_only(jint loop_count = 0);
4214 // This loop taken verbatim from ClassLoader.java:
4215 do {
4216 acl = parent(acl);
4217 if (cl == acl) {
4218 return true;
4219 }
4220 assert(++loop_count > 0, "loop_count overflow");
4221 } while (acl != NULL);
4222 return false;
4223 }
4224
4225 bool java_lang_ClassLoader::is_instance(oop obj) {
4226 return obj != NULL && is_subclass(obj->klass());
4227 }
4228
4229
4230 // For class loader classes, parallelCapable defined
4231 // based on non-null field
4232 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4233 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4234 assert(parallelCapable_offset != -1, "offsets should have been initialized");
4235 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4236 }
4237
4238 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4239 // Fix for 4474172; see evaluation for more details
4240 loader = non_reflection_class_loader(loader);
4241
4242 oop cl = SystemDictionary::java_system_loader();
4243 while(cl != NULL) {
4244 if (cl == loader) return true;
4245 cl = parent(cl);
4246 }
4247 return false;
4248 }
4249
4250 // Return true if this is one of the class loaders associated with
4251 // the generated bytecodes for reflection.
4252 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4253 if (loader != NULL) {
4254 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4255 // This might be null in non-1.4 JDKs
4256 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4257 }
4258 return false;
4259 }
4260
4261 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4262 // See whether this is one of the class loaders associated with
4263 // the generated bytecodes for reflection, and if so, "magically"
4264 // delegate to its parent to prevent class loading from occurring
4265 // in places where applications using reflection didn't expect it.
4266 if (is_reflection_class_loader(loader)) {
4267 return parent(loader);
4268 }
4269 return loader;
4270 }
4271
4272 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4273 assert(is_instance(loader), "loader must be oop");
4274 return loader->obj_field(unnamedModule_offset);
4275 }
4276
4277 // Support for java_lang_System
4278 //
4279 #define SYSTEM_FIELDS_DO(macro) \
4280 macro(static_in_offset, k, "in", input_stream_signature, true); \
4281 macro(static_out_offset, k, "out", print_stream_signature, true); \
4282 macro(static_err_offset, k, "err", print_stream_signature, true); \
4283 macro(static_security_offset, k, "security", security_manager_signature, true)
4284
4285 void java_lang_System::compute_offsets() {
4286 InstanceKlass* k = SystemDictionary::System_klass();
4287 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4288 }
4289
4290 #if INCLUDE_CDS
4291 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4292 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4293 }
4294 #endif
4295
4296 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4297 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4298 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4299
4300 // Support for jdk_internal_misc_UnsafeConstants
4301 //
4302 class UnsafeConstantsFixup : public FieldClosure {
4303 private:
4304 int _address_size;
4305 int _page_size;
4306 bool _big_endian;
4307 bool _use_unaligned_access;
4308 int _data_cache_line_flush_size;
4309 public:
4310 UnsafeConstantsFixup() {
4311 // round up values for all static final fields
4312 _address_size = sizeof(void*);
4313 _page_size = os::vm_page_size();
4314 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4315 _use_unaligned_access = UseUnalignedAccesses;
4316 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4317 }
4318
4319 void do_field(fieldDescriptor* fd) {
4320 oop mirror = fd->field_holder()->java_mirror();
4321 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4322 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4323 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4324 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4325 if (fd->name() == vmSymbols::address_size_name()) {
4326 mirror->int_field_put(fd->offset(), _address_size);
4327 } else if (fd->name() == vmSymbols::page_size_name()) {
4328 mirror->int_field_put(fd->offset(), _page_size);
4329 } else if (fd->name() == vmSymbols::big_endian_name()) {
4330 mirror->bool_field_put(fd->offset(), _big_endian);
4331 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4332 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4333 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4334 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4335 } else {
4336 assert(false, "unexpected UnsafeConstants field");
4337 }
4338 }
4339 };
4340
4341 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4342 UnsafeConstantsFixup fixup;
4343 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4344 }
4345
4346 int java_lang_Class::_klass_offset;
4347 int java_lang_Class::_array_klass_offset;
4348 int java_lang_Class::_oop_size_offset;
4349 int java_lang_Class::_static_oop_field_count_offset;
4350 int java_lang_Class::_class_loader_offset;
4351 int java_lang_Class::_module_offset;
4352 int java_lang_Class::_protection_domain_offset;
4353 int java_lang_Class::_component_mirror_offset;
4354 int java_lang_Class::_inline_mirror_offset;
4355 int java_lang_Class::_indirect_mirror_offset;
4356 int java_lang_Class::_init_lock_offset;
4357 int java_lang_Class::_signers_offset;
4358 int java_lang_Class::_name_offset;
4359 int java_lang_Class::_source_file_offset;
4360 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4361 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4362 int java_lang_Throwable::backtrace_offset;
4363 int java_lang_Throwable::detailMessage_offset;
4364 int java_lang_Throwable::stackTrace_offset;
4365 int java_lang_Throwable::depth_offset;
4366 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4367 int java_lang_reflect_AccessibleObject::override_offset;
4368 int java_lang_reflect_Method::clazz_offset;
4369 int java_lang_reflect_Method::name_offset;
4370 int java_lang_reflect_Method::returnType_offset;
4371 int java_lang_reflect_Method::parameterTypes_offset;
4372 int java_lang_reflect_Method::exceptionTypes_offset;
4373 int java_lang_reflect_Method::slot_offset;
4374 int java_lang_reflect_Method::modifiers_offset;
4375 int java_lang_reflect_Method::signature_offset;
4376 int java_lang_reflect_Method::annotations_offset;
4377 int java_lang_reflect_Method::parameter_annotations_offset;
4378 int java_lang_reflect_Method::annotation_default_offset;
4379 int java_lang_reflect_Constructor::clazz_offset;
4380 int java_lang_reflect_Constructor::parameterTypes_offset;
4381 int java_lang_reflect_Constructor::exceptionTypes_offset;
4382 int java_lang_reflect_Constructor::slot_offset;
4383 int java_lang_reflect_Constructor::modifiers_offset;
4384 int java_lang_reflect_Constructor::signature_offset;
4385 int java_lang_reflect_Constructor::annotations_offset;
4386 int java_lang_reflect_Constructor::parameter_annotations_offset;
4387 int java_lang_reflect_Field::clazz_offset;
4388 int java_lang_reflect_Field::name_offset;
4389 int java_lang_reflect_Field::type_offset;
4390 int java_lang_reflect_Field::slot_offset;
4391 int java_lang_reflect_Field::modifiers_offset;
4392 int java_lang_reflect_Field::signature_offset;
4393 int java_lang_reflect_Field::annotations_offset;
4394 int java_lang_reflect_Parameter::name_offset;
4395 int java_lang_reflect_Parameter::modifiers_offset;
4396 int java_lang_reflect_Parameter::index_offset;
4397 int java_lang_reflect_Parameter::executable_offset;
4398 int java_lang_boxing_object::value_offset;
4399 int java_lang_boxing_object::long_value_offset;
4400 int java_lang_ref_Reference::referent_offset;
4401 int java_lang_ref_Reference::queue_offset;
4402 int java_lang_ref_Reference::next_offset;
4403 int java_lang_ref_Reference::discovered_offset;
4404 int java_lang_ref_SoftReference::timestamp_offset;
4405 int java_lang_ref_SoftReference::static_clock_offset;
4406 int java_lang_ClassLoader::parent_offset;
4407 int java_lang_System::static_in_offset;
4408 int java_lang_System::static_out_offset;
4409 int java_lang_System::static_err_offset;
4410 int java_lang_System::static_security_offset;
4411 int java_lang_StackTraceElement::methodName_offset;
4412 int java_lang_StackTraceElement::fileName_offset;
4413 int java_lang_StackTraceElement::lineNumber_offset;
4414 int java_lang_StackTraceElement::moduleName_offset;
4415 int java_lang_StackTraceElement::moduleVersion_offset;
4416 int java_lang_StackTraceElement::classLoaderName_offset;
4417 int java_lang_StackTraceElement::declaringClass_offset;
4418 int java_lang_StackTraceElement::declaringClassObject_offset;
4419 int java_lang_StackFrameInfo::_memberName_offset;
4420 int java_lang_StackFrameInfo::_bci_offset;
4421 int java_lang_StackFrameInfo::_version_offset;
4422 int java_lang_LiveStackFrameInfo::_monitors_offset;
4423 int java_lang_LiveStackFrameInfo::_locals_offset;
4424 int java_lang_LiveStackFrameInfo::_operands_offset;
4425 int java_lang_LiveStackFrameInfo::_mode_offset;
4426 int java_lang_AssertionStatusDirectives::classes_offset;
4427 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4428 int java_lang_AssertionStatusDirectives::packages_offset;
4429 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4430 int java_lang_AssertionStatusDirectives::deflt_offset;
4431 int java_nio_Buffer::_limit_offset;
4432 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4433 int reflect_ConstantPool::_oop_offset;
4434 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4435 int java_lang_Integer_IntegerCache::_static_cache_offset;
4436 int java_lang_Long_LongCache::_static_cache_offset;
4437 int java_lang_Character_CharacterCache::_static_cache_offset;
4438 int java_lang_Short_ShortCache::_static_cache_offset;
4439 int java_lang_Byte_ByteCache::_static_cache_offset;
4440 int java_lang_Boolean::_static_TRUE_offset;
4441 int java_lang_Boolean::_static_FALSE_offset;
4442 int java_lang_reflect_RecordComponent::clazz_offset;
4443 int java_lang_reflect_RecordComponent::name_offset;
4444 int java_lang_reflect_RecordComponent::type_offset;
4445 int java_lang_reflect_RecordComponent::accessor_offset;
4446 int java_lang_reflect_RecordComponent::signature_offset;
4447 int java_lang_reflect_RecordComponent::annotations_offset;
4448 int java_lang_reflect_RecordComponent::typeAnnotations_offset;
4449 int jdk_internal_vm_jni_SubElementSelector::_arrayElementType_offset;
4450 int jdk_internal_vm_jni_SubElementSelector::_subElementType_offset;
4451 int jdk_internal_vm_jni_SubElementSelector::_offset_offset;
4452 int jdk_internal_vm_jni_SubElementSelector::_isFlattened_offset;
4453 int jdk_internal_vm_jni_SubElementSelector::_isFlattenable_offset;
4454
4455
4456
4457 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4458 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4459 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4460 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4461 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4462 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4463 macro(methodName_offset, k, "methodName", string_signature, false); \
4464 macro(fileName_offset, k, "fileName", string_signature, false); \
4465 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4466
4467 // Support for java_lang_StackTraceElement
4468 void java_lang_StackTraceElement::compute_offsets() {
4469 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4470 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4471 }
4472
4473 #if INCLUDE_CDS
4474 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4475 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4476 }
4477 #endif
4478
4479 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4480 element->obj_field_put(fileName_offset, value);
4481 }
4482
4483 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4484 element->obj_field_put(declaringClass_offset, value);
4485 }
4486
4487 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4488 element->obj_field_put(methodName_offset, value);
4489 }
4490
4491 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4492 element->int_field_put(lineNumber_offset, value);
4493 }
4494
4495 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4496 element->obj_field_put(moduleName_offset, value);
4497 }
4498
4499 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4500 element->obj_field_put(moduleVersion_offset, value);
4501 }
4502
4503 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4504 element->obj_field_put(classLoaderName_offset, value);
4505 }
4506
4507 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4508 element->obj_field_put(declaringClassObject_offset, value);
4509 }
4510
4511 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4512 element->short_field_put(_version_offset, value);
4513 }
4514
4515 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4516 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4517 element->int_field_put(_bci_offset, value);
4518 }
4519
4520 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4521 element->obj_field_put(_monitors_offset, value);
4522 }
4523
4524 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4525 element->obj_field_put(_locals_offset, value);
4526 }
4527
4528 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4529 element->obj_field_put(_operands_offset, value);
4530 }
4531
4532 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4533 element->int_field_put(_mode_offset, value);
4534 }
4535
4536 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4537 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4538 macro(classes_offset, k, "classes", string_array_signature, false); \
4539 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4540 macro(packages_offset, k, "packages", string_array_signature, false); \
4541 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4542 macro(deflt_offset, k, "deflt", bool_signature, false)
4543
4544 void java_lang_AssertionStatusDirectives::compute_offsets() {
4545 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4546 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4547 }
4548
4549 #if INCLUDE_CDS
4550 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4551 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4552 }
4553 #endif
4554
4555 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4556 o->obj_field_put(classes_offset, val);
4557 }
4558
4559 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4560 o->obj_field_put(classEnabled_offset, val);
4561 }
4562
4563 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4564 o->obj_field_put(packages_offset, val);
4565 }
4566
4567 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4568 o->obj_field_put(packageEnabled_offset, val);
4569 }
4570
4571 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4572 o->bool_field_put(deflt_offset, val);
4573 }
4574
4575
4576 // Support for intrinsification of java.nio.Buffer.checkIndex
4577 int java_nio_Buffer::limit_offset() {
4578 return _limit_offset;
4579 }
4580
4581 #define BUFFER_FIELDS_DO(macro) \
4582 macro(_limit_offset, k, "limit", int_signature, false)
4583
4584 void java_nio_Buffer::compute_offsets() {
4585 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4586 assert(k != NULL, "must be loaded in 1.4+");
4587 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4588 }
4589
4590 #if INCLUDE_CDS
4591 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4592 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4593 }
4594 #endif
4595
4596 #define AOS_FIELDS_DO(macro) \
4597 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4598
4599 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4600 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4601 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4602 }
4603
4604 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4605 assert(_owner_offset != 0, "Must be initialized");
4606 return obj->obj_field(_owner_offset);
4607 }
4608
4609 #if INCLUDE_CDS
4610 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4611 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4612 }
4613 #endif
4614
4615 #define INTEGER_CACHE_FIELDS_DO(macro) \
4616 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4617
4618 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4619 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4620 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4621 }
4622
4623 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4624 oop base = ik->static_field_base_raw();
4625 return objArrayOop(base->obj_field(_static_cache_offset));
4626 }
4627
4628 Symbol* java_lang_Integer_IntegerCache::symbol() {
4629 return vmSymbols::java_lang_Integer_IntegerCache();
4630 }
4631
4632 #if INCLUDE_CDS
4633 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4634 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4635 }
4636 #endif
4637 #undef INTEGER_CACHE_FIELDS_DO
4638
4639 jint java_lang_Integer::value(oop obj) {
4640 jvalue v;
4641 java_lang_boxing_object::get_value(obj, &v);
4642 return v.i;
4643 }
4644
4645 #define LONG_CACHE_FIELDS_DO(macro) \
4646 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4647
4648 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4649 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4650 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4651 }
4652
4653 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4654 oop base = ik->static_field_base_raw();
4655 return objArrayOop(base->obj_field(_static_cache_offset));
4656 }
4657
4658 Symbol* java_lang_Long_LongCache::symbol() {
4659 return vmSymbols::java_lang_Long_LongCache();
4660 }
4661
4662 #if INCLUDE_CDS
4663 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4664 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4665 }
4666 #endif
4667 #undef LONG_CACHE_FIELDS_DO
4668
4669 jlong java_lang_Long::value(oop obj) {
4670 jvalue v;
4671 java_lang_boxing_object::get_value(obj, &v);
4672 return v.j;
4673 }
4674
4675 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4676 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4677
4678 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4679 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4680 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4681 }
4682
4683 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4684 oop base = ik->static_field_base_raw();
4685 return objArrayOop(base->obj_field(_static_cache_offset));
4686 }
4687
4688 Symbol* java_lang_Character_CharacterCache::symbol() {
4689 return vmSymbols::java_lang_Character_CharacterCache();
4690 }
4691
4692 #if INCLUDE_CDS
4693 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4694 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4695 }
4696 #endif
4697 #undef CHARACTER_CACHE_FIELDS_DO
4698
4699 jchar java_lang_Character::value(oop obj) {
4700 jvalue v;
4701 java_lang_boxing_object::get_value(obj, &v);
4702 return v.c;
4703 }
4704
4705 #define SHORT_CACHE_FIELDS_DO(macro) \
4706 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4707
4708 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4709 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4710 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4711 }
4712
4713 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4714 oop base = ik->static_field_base_raw();
4715 return objArrayOop(base->obj_field(_static_cache_offset));
4716 }
4717
4718 Symbol* java_lang_Short_ShortCache::symbol() {
4719 return vmSymbols::java_lang_Short_ShortCache();
4720 }
4721
4722 #if INCLUDE_CDS
4723 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4724 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4725 }
4726 #endif
4727 #undef SHORT_CACHE_FIELDS_DO
4728
4729 jshort java_lang_Short::value(oop obj) {
4730 jvalue v;
4731 java_lang_boxing_object::get_value(obj, &v);
4732 return v.s;
4733 }
4734
4735 #define BYTE_CACHE_FIELDS_DO(macro) \
4736 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4737
4738 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4739 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4740 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4741 }
4742
4743 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4744 oop base = ik->static_field_base_raw();
4745 return objArrayOop(base->obj_field(_static_cache_offset));
4746 }
4747
4748 Symbol* java_lang_Byte_ByteCache::symbol() {
4749 return vmSymbols::java_lang_Byte_ByteCache();
4750 }
4751
4752 #if INCLUDE_CDS
4753 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4754 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4755 }
4756 #endif
4757 #undef BYTE_CACHE_FIELDS_DO
4758
4759 #define SUBELEMENT_SELECTOR_FIELDS_DO(macro) \
4760 macro(_arrayElementType_offset, k, "arrayElementType", class_signature, false); \
4761 macro(_subElementType_offset, k, "subElementType", class_signature, false); \
4762 macro(_offset_offset, k, "offset", int_signature, false); \
4763 macro(_isFlattened_offset, k, "isFlattened", bool_signature, false); \
4764 macro(_isFlattenable_offset, k, "isFlattenable", bool_signature, false);
4765
4766 void jdk_internal_vm_jni_SubElementSelector::compute_offsets() {
4767 InstanceKlass* k = SystemDictionary::jdk_internal_vm_jni_SubElementSelector_klass();
4768 SUBELEMENT_SELECTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4769 }
4770
4771 #if INCLUDE_CDS
4772 void jdk_internal_vm_jni_SubElementSelector::serialize_offsets(SerializeClosure* f) {
4773 SUBELEMENT_SELECTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4774 }
4775 #endif
4776 #undef SUBELEMENT_SELECTOR_FIELDS_DO
4777
4778 Symbol* jdk_internal_vm_jni_SubElementSelector::symbol() {
4779 return vmSymbols::jdk_internal_vm_jni_SubElementSelector();
4780 }
4781
4782 oop jdk_internal_vm_jni_SubElementSelector::getArrayElementType(oop obj) {
4783 return obj->obj_field(_arrayElementType_offset);
4784 }
4785
4786 void jdk_internal_vm_jni_SubElementSelector::setArrayElementType(oop obj, oop type) {
4787 obj->obj_field_put(_arrayElementType_offset, type);
4788 }
4789
4790 oop jdk_internal_vm_jni_SubElementSelector::getSubElementType(oop obj) {
4791 return obj->obj_field(_subElementType_offset);
4792 }
4793
4794 void jdk_internal_vm_jni_SubElementSelector::setSubElementType(oop obj, oop type) {
4795 obj->obj_field_put(_subElementType_offset, type);
4796 }
4797
4798 int jdk_internal_vm_jni_SubElementSelector::getOffset(oop obj) {
4799 return obj->int_field(_offset_offset);
4800 }
4801
4802 void jdk_internal_vm_jni_SubElementSelector::setOffset(oop obj, int offset) {
4803 obj->int_field_put(_offset_offset, offset);
4804 }
4805
4806 bool jdk_internal_vm_jni_SubElementSelector::getIsFlattened(oop obj) {
4807 return obj->bool_field(_isFlattened_offset);
4808 }
4809
4810 void jdk_internal_vm_jni_SubElementSelector::setIsFlattened(oop obj, bool b) {
4811 obj->bool_field_put(_isFlattened_offset, b);
4812 }
4813
4814 bool jdk_internal_vm_jni_SubElementSelector::getIsFlattenable(oop obj) {
4815 return obj->bool_field(_isFlattenable_offset);
4816 }
4817
4818 void jdk_internal_vm_jni_SubElementSelector::setIsFlattenable(oop obj, bool b) {
4819 obj->bool_field_put(_isFlattenable_offset, b);
4820 }
4821
4822 jbyte java_lang_Byte::value(oop obj) {
4823 jvalue v;
4824 java_lang_boxing_object::get_value(obj, &v);
4825 return v.b;
4826 }
4827 #define BOOLEAN_FIELDS_DO(macro) \
4828 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4829 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4830
4831
4832 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4833 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4834 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4835 }
4836
4837 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4838 oop base = ik->static_field_base_raw();
4839 return base->obj_field(_static_TRUE_offset);
4840 }
4841
4842 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4843 oop base = ik->static_field_base_raw();
4844 return base->obj_field(_static_FALSE_offset);
4845 }
4846
4847 Symbol* java_lang_Boolean::symbol() {
4848 return vmSymbols::java_lang_Boolean();
4849 }
4850
4851 #if INCLUDE_CDS
4852 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4853 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4854 }
4855 #endif
4856 #undef BOOLEAN_CACHE_FIELDS_DO
4857
4858 jboolean java_lang_Boolean::value(oop obj) {
4859 jvalue v;
4860 java_lang_boxing_object::get_value(obj, &v);
4861 return v.z;
4862 }
4863
4864 static int member_offset(int hardcoded_offset) {
4865 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4866 }
4867
4868 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4869 macro(clazz_offset, k, "clazz", class_signature, false); \
4870 macro(name_offset, k, "name", string_signature, false); \
4871 macro(type_offset, k, "type", class_signature, false); \
4872 macro(accessor_offset, k, "accessor", reflect_method_signature, false); \
4873 macro(signature_offset, k, "signature", string_signature, false); \
4874 macro(annotations_offset, k, "annotations", byte_array_signature, false); \
4875 macro(typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4876
4877 // Support for java_lang_reflect_RecordComponent
4878 void java_lang_reflect_RecordComponent::compute_offsets() {
4879 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4880 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4881 }
4882
4883 #if INCLUDE_CDS
4884 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4885 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4886 }
4887 #endif
4888
4889 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4890 element->obj_field_put(clazz_offset, value);
4891 }
4892
4893 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4894 element->obj_field_put(name_offset, value);
4895 }
4896
4897 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4898 element->obj_field_put(type_offset, value);
4899 }
4900
4901 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4902 element->obj_field_put(accessor_offset, value);
4903 }
4904
4905 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4906 element->obj_field_put(signature_offset, value);
4907 }
4908
4909 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4910 element->obj_field_put(annotations_offset, value);
4911 }
4912
4913 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4914 element->obj_field_put(typeAnnotations_offset, value);
4915 }
4916
4917 // Compute hard-coded offsets
4918 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4919 // are not available to determine the offset_of_static_fields.
4920 void JavaClasses::compute_hard_coded_offsets() {
4921
4922 // java_lang_boxing_object
4923 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4924 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4925
4926 // java_lang_ref_Reference
4927 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4928 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4929 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4930 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4931 }
4932
4933 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4934
4935 // Compute non-hard-coded field offsets of all the classes in this file
4936 void JavaClasses::compute_offsets() {
4937 if (UseSharedSpaces) {
4938 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4939 JvmtiExport::has_early_class_hook_env()),
4940 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4941 // None of the classes used by the rest of this function can be replaced by
4942 // JMVTI ClassFileLoadHook.
4943 // We are safe to use the archived offsets, which have already been restored
4944 // by JavaClasses::serialize_offsets, without computing the offsets again.
4945 return;
4946 }
4947
4948 // We have already called the compute_offsets() of the
4949 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4950 // earlier inside SystemDictionary::resolve_well_known_classes()
4951 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4952 }
4953
4954 #if INCLUDE_CDS
4955 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4956
4957 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4958 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4959 }
4960 #endif
4961
4962 #if INCLUDE_CDS_JAVA_HEAP
4963 bool JavaClasses::is_supported_for_archiving(oop obj) {
4964 Klass* klass = obj->klass();
4965
4966 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4967 klass == SystemDictionary::Module_klass() || // Module::module_entry is malloc'ed
4968 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4969 // regular Java code. The implementation of java.lang.invoke uses generated anonymoys classes
4970 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4971 // So for now we cannot not support these classes for archiving.
4972 //
4973 // These objects typically are not referenced by static fields, but rather by resolved
4974 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4975 klass == SystemDictionary::ResolvedMethodName_klass() ||
4976 klass == SystemDictionary::MemberName_klass() ||
4977 klass == SystemDictionary::Context_klass()) {
4978 return false;
4979 }
4980
4981 return true;
4982 }
4983 #endif
4984
4985 #ifndef PRODUCT
4986
4987 // These functions exist to assert the validity of hard-coded field offsets to guard
4988 // against changes in the class files
4989
4990 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4991 EXCEPTION_MARK;
4992 fieldDescriptor fd;
4993 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4994 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4995 InstanceKlass* ik = InstanceKlass::cast(k);
4996 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4997 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4998 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4999 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5000 return false;
5001 }
5002 if (fd.is_static()) {
5003 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5004 return false;
5005 }
5006 if (fd.offset() == hardcoded_offset ) {
5007 return true;
5008 } else {
5009 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
5010 klass_name, field_name, hardcoded_offset, fd.offset());
5011 return false;
5012 }
5013 }
5014
5015 // Check the hard-coded field offsets of all the classes in this file
5016
5017 void JavaClasses::check_offsets() {
5018 bool valid = true;
5019
5020 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5021 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
5022
5023 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5024 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
5025
5026 // Boxed primitive objects (java_lang_boxing_object)
5027
5028 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5029 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5030 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5031 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5032 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5033 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5034 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5035 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5036
5037 // java.lang.ref.Reference
5038
5039 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
5040 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
5041 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
5042 // Fake field
5043 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
5044
5045 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
5046 }
5047
5048 #endif // PRODUCT
5049
5050 int InjectedField::compute_offset() {
5051 InstanceKlass* ik = InstanceKlass::cast(klass());
5052 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5053 if (!may_be_java && !fs.access_flags().is_internal()) {
5054 // Only look at injected fields
5055 continue;
5056 }
5057 if (fs.name() == name() && fs.signature() == signature()) {
5058 return fs.offset();
5059 }
5060 }
5061 ResourceMark rm;
5062 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)" : "");
5063 #ifndef PRODUCT
5064 ik->print();
5065 tty->print_cr("all fields:");
5066 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5067 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
5068 }
5069 #endif //PRODUCT
5070 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
5071 return -1;
5072 }
5073
5074 void javaClasses_init() {
5075 JavaClasses::compute_offsets();
5076 JavaClasses::check_offsets();
5077 FilteredFieldsMap::initialize(); // must be done after computing offsets.
5078 }