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.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 "prims/jvmtiExport.hpp"
56 #include "prims/resolvedMethodTable.hpp"
57 #include "runtime/fieldDescriptor.inline.hpp"
58 #include "runtime/frame.inline.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/init.hpp"
61 #include "runtime/interfaceSupport.inline.hpp"
62 #include "runtime/java.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/safepoint.hpp"
66 #include "runtime/safepointVerifiers.hpp"
67 #include "runtime/thread.inline.hpp"
68 #include "runtime/vframe.inline.hpp"
69 #include "runtime/vm_version.hpp"
70 #include "utilities/align.hpp"
71 #include "utilities/preserveException.hpp"
72 #include "utilities/utf8.hpp"
73 #if INCLUDE_JVMCI
74 #include "jvmci/jvmciJavaClasses.hpp"
75 #endif
76
77 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
78 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
79
80 #if INCLUDE_CDS
81 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
82 f->do_u4((u4*)&_##name##_offset);
83 #endif
84
85 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
86 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
87
88 InjectedField JavaClasses::_injected_fields[] = {
89 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
90 };
91
92 // Register native methods of Object
93 void java_lang_Object::register_natives(TRAPS) {
94 InstanceKlass* obj = SystemDictionary::Object_klass();
95 Method::register_native(obj, vmSymbols::hashCode_name(),
96 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
97 Method::register_native(obj, vmSymbols::wait_name(),
98 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
99 Method::register_native(obj, vmSymbols::notify_name(),
100 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
101 Method::register_native(obj, vmSymbols::notifyAll_name(),
102 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
103 Method::register_native(obj, vmSymbols::clone_name(),
104 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
105 }
106
107 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
108 return _injected_fields[id].compute_offset();
109 }
110
111 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
112 *field_count = 0;
113
114 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
115 if (sid == vmSymbols::NO_SID) {
116 // Only well known classes can inject fields
117 return NULL;
118 }
119
120 int count = 0;
121 int start = -1;
122
123 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
124 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
125 count++; \
126 if (start == -1) start = klass##_##name##_enum; \
127 }
128 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
129 #undef LOOKUP_INJECTED_FIELD
130
131 if (start != -1) {
132 *field_count = count;
133 return _injected_fields + start;
134 }
135 return NULL;
136 }
137
138
139 // Helpful routine for computing field offsets at run time rather than hardcoding them
140 // Finds local fields only, including static fields. Static field offsets are from the
141 // beginning of the mirror.
142 static void compute_offset(int &dest_offset,
143 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
144 bool is_static = false) {
145 fieldDescriptor fd;
146 if (ik == NULL) {
147 ResourceMark rm;
148 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
149 vm_exit_during_initialization("Invalid layout of well-known class");
150 }
151
152 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
153 ResourceMark rm;
154 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
155 name_symbol->as_C_string(), signature_symbol->as_C_string());
156 #ifndef PRODUCT
157 // Prints all fields and offsets
158 Log(class) lt;
159 LogStream ls(lt.error());
160 ik->print_on(&ls);
161 #endif //PRODUCT
162 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
163 }
164 dest_offset = fd.offset();
165 }
166
167 // Overloading to pass name as a string.
168 static void compute_offset(int& dest_offset, InstanceKlass* ik,
169 const char* name_string, Symbol* signature_symbol,
170 bool is_static = false) {
171 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
172 if (name == NULL) {
173 ResourceMark rm;
174 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
175 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
176 }
177 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
178 }
179
180 int java_lang_String::value_offset = 0;
181 int java_lang_String::hash_offset = 0;
182 int java_lang_String::hashIsZero_offset = 0;
183 int java_lang_String::coder_offset = 0;
184
185 bool java_lang_String::initialized = false;
186
187 bool java_lang_String::is_instance(oop obj) {
188 return is_instance_inlined(obj);
189 }
190
191 #if INCLUDE_CDS
192 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
193 f->do_u4((u4*)&offset)
194 #endif
195
196 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
197 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
198
199 #define STRING_FIELDS_DO(macro) \
200 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
201 macro(hash_offset, k, "hash", int_signature, false); \
202 macro(hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
203 macro(coder_offset, k, "coder", byte_signature, false);
204
205 void java_lang_String::compute_offsets() {
206 if (initialized) {
207 return;
208 }
209
210 InstanceKlass* k = SystemDictionary::String_klass();
211 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
212
213 initialized = true;
214 }
215
216 #if INCLUDE_CDS
217 void java_lang_String::serialize_offsets(SerializeClosure* f) {
218 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
219 f->do_bool(&initialized);
220 }
221 #endif
222
223 class CompactStringsFixup : public FieldClosure {
224 private:
225 bool _value;
226
227 public:
228 CompactStringsFixup(bool value) : _value(value) {}
229
230 void do_field(fieldDescriptor* fd) {
231 if (fd->name() == vmSymbols::compact_strings_name()) {
232 oop mirror = fd->field_holder()->java_mirror();
233 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
234 assert(mirror != NULL, "String must have mirror already");
235 mirror->bool_field_put(fd->offset(), _value);
236 }
237 }
238 };
239
240 void java_lang_String::set_compact_strings(bool value) {
241 CompactStringsFixup fix(value);
242 SystemDictionary::String_klass()->do_local_static_fields(&fix);
243 }
244
245 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
246 assert(initialized, "Must be initialized");
247 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
248
249 // Create the String object first, so there's a chance that the String
250 // and the char array it points to end up in the same cache line.
251 oop obj;
252 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
253
254 // Create the char array. The String object must be handlized here
255 // because GC can happen as a result of the allocation attempt.
256 Handle h_obj(THREAD, obj);
257 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
258 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
259
260 // Point the String at the char array
261 obj = h_obj();
262 set_value(obj, buffer);
263 // No need to zero the offset, allocation zero'ed the entire String object
264 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
265 return h_obj;
266 }
267
268 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
269 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
270 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
271 typeArrayOop buffer = value(h_obj());
272 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
273 if (is_latin1) {
274 for (int index = 0; index < length; index++) {
275 buffer->byte_at_put(index, (jbyte)unicode[index]);
276 }
277 } else {
278 for (int index = 0; index < length; index++) {
279 buffer->char_at_put(index, unicode[index]);
280 }
281 }
282
283 #ifdef ASSERT
284 {
285 ResourceMark rm;
286 char* expected = UNICODE::as_utf8(unicode, length);
287 char* actual = as_utf8_string(h_obj());
288 if (strcmp(expected, actual) != 0) {
289 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
290 ShouldNotReachHere();
291 }
292 }
293 #endif
294
295 return h_obj;
296 }
297
298 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
299 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
300 return h_obj();
301 }
302
303 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
304 if (utf8_str == NULL) {
305 return Handle();
306 }
307 bool has_multibyte, is_latin1;
308 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
309 if (!CompactStrings) {
310 has_multibyte = true;
311 is_latin1 = false;
312 }
313
314 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
315 if (length > 0) {
316 if (!has_multibyte) {
317 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
318 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
319 } else if (is_latin1) {
320 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
321 } else {
322 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
323 }
324 }
325
326 #ifdef ASSERT
327 // This check is too strict because the input string is not necessarily valid UTF8.
328 // For example, it may be created with arbitrary content via jni_NewStringUTF.
329 /*
330 {
331 ResourceMark rm;
332 const char* expected = utf8_str;
333 char* actual = as_utf8_string(h_obj());
334 if (strcmp(expected, actual) != 0) {
335 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
336 ShouldNotReachHere();
337 }
338 }
339 */
340 #endif
341
342 return h_obj;
343 }
344
345 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
346 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
347 return h_obj();
348 }
349
350 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
351 const char* utf8_str = (char*)symbol->bytes();
352 int utf8_len = symbol->utf8_length();
353
354 bool has_multibyte, is_latin1;
355 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
356 if (!CompactStrings) {
357 has_multibyte = true;
358 is_latin1 = false;
359 }
360
361 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
362 if (length > 0) {
363 if (!has_multibyte) {
364 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
365 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
366 } else if (is_latin1) {
367 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
368 } else {
369 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
370 }
371 }
372
373 #ifdef ASSERT
374 {
375 ResourceMark rm;
376 const char* expected = symbol->as_utf8();
377 char* actual = as_utf8_string(h_obj());
378 if (strncmp(expected, actual, utf8_len) != 0) {
379 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
380 ShouldNotReachHere();
381 }
382 }
383 #endif
384
385 return h_obj;
386 }
387
388 // Converts a C string to a Java String based on current encoding
389 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
390 assert(str != NULL, "bad arguments");
391
392 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
393 static to_java_string_fn_t _to_java_string_fn = NULL;
394
395 if (_to_java_string_fn == NULL) {
396 void *lib_handle = os::native_java_library();
397 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
398 #if defined(_WIN32) && !defined(_WIN64)
399 if (_to_java_string_fn == NULL) {
400 // On 32 bit Windows, also try __stdcall decorated name
401 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
402 }
403 #endif
404 if (_to_java_string_fn == NULL) {
405 fatal("JNU_NewStringPlatform missing");
406 }
407 }
408
409 jstring js = NULL;
410 {
411 assert(THREAD->is_Java_thread(), "must be java thread");
412 JavaThread* thread = (JavaThread*)THREAD;
413 HandleMark hm(thread);
414 ThreadToNativeFromVM ttn(thread);
415 js = (_to_java_string_fn)(thread->jni_environment(), str);
416 }
417
418 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
419 JNIHandles::destroy_local(js); // destroy local JNIHandle.
420 return native_platform_string;
421 }
422
423 // Converts a Java String to a native C string that can be used for
424 // native OS calls.
425 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
426 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
427 static to_platform_string_fn_t _to_platform_string_fn = NULL;
428
429 if (_to_platform_string_fn == NULL) {
430 void *lib_handle = os::native_java_library();
431 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
432 if (_to_platform_string_fn == NULL) {
433 fatal("GetStringPlatformChars missing");
434 }
435 }
436
437 char *native_platform_string;
438 { JavaThread* thread = (JavaThread*)THREAD;
439 assert(thread->is_Java_thread(), "must be java thread");
440 JNIEnv *env = thread->jni_environment();
441 jstring js = (jstring) JNIHandles::make_local(env, java_string());
442 bool is_copy;
443 HandleMark hm(thread);
444 ThreadToNativeFromVM ttn(thread);
445 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
446 assert(is_copy == JNI_TRUE, "is_copy value changed");
447 JNIHandles::destroy_local(js);
448 }
449 return native_platform_string;
450 }
451
452 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
453 oop obj = java_string();
454 // Typical usage is to convert all '/' to '.' in string.
455 typeArrayOop value = java_lang_String::value(obj);
456 int length = java_lang_String::length(obj, value);
457 bool is_latin1 = java_lang_String::is_latin1(obj);
458
459 // First check if any from_char exist
460 int index; // Declared outside, used later
461 for (index = 0; index < length; index++) {
462 jchar c = !is_latin1 ? value->char_at(index) :
463 ((jchar) value->byte_at(index)) & 0xff;
464 if (c == from_char) {
465 break;
466 }
467 }
468 if (index == length) {
469 // No from_char, so do not copy.
470 return java_string;
471 }
472
473 // Check if result string will be latin1
474 bool to_is_latin1 = false;
475
476 // Replacement char must be latin1
477 if (CompactStrings && UNICODE::is_latin1(to_char)) {
478 if (is_latin1) {
479 // Source string is latin1 as well
480 to_is_latin1 = true;
481 } else if (!UNICODE::is_latin1(from_char)) {
482 // We are replacing an UTF16 char. Scan string to
483 // check if result can be latin1 encoded.
484 to_is_latin1 = true;
485 for (index = 0; index < length; index++) {
486 jchar c = value->char_at(index);
487 if (c != from_char && !UNICODE::is_latin1(c)) {
488 to_is_latin1 = false;
489 break;
490 }
491 }
492 }
493 }
494
495 // Create new UNICODE (or byte) buffer. Must handlize value because GC
496 // may happen during String and char array creation.
497 typeArrayHandle h_value(THREAD, value);
498 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
499 typeArrayOop from_buffer = h_value();
500 typeArrayOop to_buffer = java_lang_String::value(string());
501
502 // Copy contents
503 for (index = 0; index < length; index++) {
504 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
505 ((jchar) from_buffer->byte_at(index)) & 0xff;
506 if (c == from_char) {
507 c = to_char;
508 }
509 if (!to_is_latin1) {
510 to_buffer->char_at_put(index, c);
511 } else {
512 to_buffer->byte_at_put(index, (jbyte) c);
513 }
514 }
515 return string;
516 }
517
518 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
519 typeArrayOop value = java_lang_String::value(java_string);
520 length = java_lang_String::length(java_string, value);
521 bool is_latin1 = java_lang_String::is_latin1(java_string);
522
523 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
524 if (result != NULL) {
525 if (!is_latin1) {
526 for (int index = 0; index < length; index++) {
527 result[index] = value->char_at(index);
528 }
529 } else {
530 for (int index = 0; index < length; index++) {
531 result[index] = ((jchar) value->byte_at(index)) & 0xff;
532 }
533 }
534 } else {
535 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
536 }
537 return result;
538 }
539
540 unsigned int java_lang_String::hash_code(oop java_string) {
541 // The hash and hashIsZero fields are subject to a benign data race,
542 // making it crucial to ensure that any observable result of the
543 // calculation in this method stays correct under any possible read of
544 // these fields. Necessary restrictions to allow this to be correct
545 // without explicit memory fences or similar concurrency primitives is
546 // that we can ever only write to one of these two fields for a given
547 // String instance, and that the computation is idempotent and derived
548 // from immutable state
549 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
550 if (java_lang_String::hash_is_set(java_string)) {
551 return java_string->int_field(hash_offset);
552 }
553
554 typeArrayOop value = java_lang_String::value(java_string);
555 int length = java_lang_String::length(java_string, value);
556 bool is_latin1 = java_lang_String::is_latin1(java_string);
557
558 unsigned int hash = 0;
559 if (length > 0) {
560 if (is_latin1) {
561 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
562 } else {
563 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
564 }
565 }
566
567 if (hash != 0) {
568 java_string->int_field_put(hash_offset, hash);
569 } else {
570 java_string->bool_field_put(hashIsZero_offset, true);
571 }
572 return hash;
573 }
574
575 char* java_lang_String::as_quoted_ascii(oop java_string) {
576 typeArrayOop value = java_lang_String::value(java_string);
577 int length = java_lang_String::length(java_string, value);
578 bool is_latin1 = java_lang_String::is_latin1(java_string);
579
580 if (length == 0) return NULL;
581
582 char* result;
583 int result_length;
584 if (!is_latin1) {
585 jchar* base = value->char_at_addr(0);
586 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
587 result = NEW_RESOURCE_ARRAY(char, result_length);
588 UNICODE::as_quoted_ascii(base, length, result, result_length);
589 } else {
590 jbyte* base = value->byte_at_addr(0);
591 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
592 result = NEW_RESOURCE_ARRAY(char, result_length);
593 UNICODE::as_quoted_ascii(base, length, result, result_length);
594 }
595 assert(result_length >= length + 1, "must not be shorter");
596 assert(result_length == (int)strlen(result) + 1, "must match");
597 return result;
598 }
599
600 Symbol* java_lang_String::as_symbol(oop java_string) {
601 typeArrayOop value = java_lang_String::value(java_string);
602 int length = java_lang_String::length(java_string, value);
603 bool is_latin1 = java_lang_String::is_latin1(java_string);
604 if (!is_latin1) {
605 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
606 Symbol* sym = SymbolTable::new_symbol(base, length);
607 return sym;
608 } else {
609 ResourceMark rm;
610 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
611 const char* base = UNICODE::as_utf8(position, length);
612 Symbol* sym = SymbolTable::new_symbol(base, length);
613 return sym;
614 }
615 }
616
617 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
618 typeArrayOop value = java_lang_String::value(java_string);
619 int length = java_lang_String::length(java_string, value);
620 bool is_latin1 = java_lang_String::is_latin1(java_string);
621 if (!is_latin1) {
622 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
623 return SymbolTable::probe_unicode(base, length);
624 } else {
625 ResourceMark rm;
626 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
627 const char* base = UNICODE::as_utf8(position, length);
628 return SymbolTable::probe(base, length);
629 }
630 }
631
632 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
633 assert(value_equals(value, java_lang_String::value(java_string)),
634 "value must be same as java_lang_String::value(java_string)");
635 int length = java_lang_String::length(java_string, value);
636 if (length == 0) {
637 return 0;
638 }
639 if (!java_lang_String::is_latin1(java_string)) {
640 return UNICODE::utf8_length(value->char_at_addr(0), length);
641 } else {
642 return UNICODE::utf8_length(value->byte_at_addr(0), length);
643 }
644 }
645
646 int java_lang_String::utf8_length(oop java_string) {
647 typeArrayOop value = java_lang_String::value(java_string);
648 return utf8_length(java_string, value);
649 }
650
651 char* java_lang_String::as_utf8_string(oop java_string) {
652 typeArrayOop value = java_lang_String::value(java_string);
653 int length = java_lang_String::length(java_string, value);
654 bool is_latin1 = java_lang_String::is_latin1(java_string);
655 if (!is_latin1) {
656 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
657 return UNICODE::as_utf8(position, length);
658 } else {
659 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
660 return UNICODE::as_utf8(position, length);
661 }
662 }
663
664 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
665 assert(value_equals(value, java_lang_String::value(java_string)),
666 "value must be same as java_lang_String::value(java_string)");
667 int length = java_lang_String::length(java_string, value);
668 bool is_latin1 = java_lang_String::is_latin1(java_string);
669 if (!is_latin1) {
670 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
671 return UNICODE::as_utf8(position, length, buf, buflen);
672 } else {
673 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
674 return UNICODE::as_utf8(position, length, buf, buflen);
675 }
676 }
677
678 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
679 typeArrayOop value = java_lang_String::value(java_string);
680 return as_utf8_string(java_string, value, buf, buflen);
681 }
682
683 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
684 typeArrayOop value = java_lang_String::value(java_string);
685 bool is_latin1 = java_lang_String::is_latin1(java_string);
686 assert(start + len <= java_lang_String::length(java_string), "just checking");
687 if (!is_latin1) {
688 jchar* position = value->char_at_addr(start);
689 return UNICODE::as_utf8(position, len);
690 } else {
691 jbyte* position = value->byte_at_addr(start);
692 return UNICODE::as_utf8(position, len);
693 }
694 }
695
696 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
697 assert(value_equals(value, java_lang_String::value(java_string)),
698 "value must be same as java_lang_String::value(java_string)");
699 assert(start + len <= java_lang_String::length(java_string), "just checking");
700 bool is_latin1 = java_lang_String::is_latin1(java_string);
701 if (!is_latin1) {
702 jchar* position = value->char_at_addr(start);
703 return UNICODE::as_utf8(position, len, buf, buflen);
704 } else {
705 jbyte* position = value->byte_at_addr(start);
706 return UNICODE::as_utf8(position, len, buf, buflen);
707 }
708 }
709
710 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
711 assert(java_string->klass() == SystemDictionary::String_klass(),
712 "must be java_string");
713 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
714 int length = java_lang_String::length(java_string, value);
715 if (length != len) {
716 return false;
717 }
718 bool is_latin1 = java_lang_String::is_latin1(java_string);
719 if (!is_latin1) {
720 for (int i = 0; i < len; i++) {
721 if (value->char_at(i) != chars[i]) {
722 return false;
723 }
724 }
725 } else {
726 for (int i = 0; i < len; i++) {
727 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
728 return false;
729 }
730 }
731 }
732 return true;
733 }
734
735 bool java_lang_String::equals(oop str1, oop str2) {
736 assert(str1->klass() == SystemDictionary::String_klass(),
737 "must be java String");
738 assert(str2->klass() == SystemDictionary::String_klass(),
739 "must be java String");
740 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
741 bool is_latin1 = java_lang_String::is_latin1(str1);
742 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
743 bool is_latin2 = java_lang_String::is_latin1(str2);
744
745 if (is_latin1 != is_latin2) {
746 // Strings with different coders are never equal.
747 return false;
748 }
749 return value_equals(value1, value2);
750 }
751
752 void java_lang_String::print(oop java_string, outputStream* st) {
753 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
754 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
755
756 if (value == NULL) {
757 // This can happen if, e.g., printing a String
758 // object before its initializer has been called
759 st->print("NULL");
760 return;
761 }
762
763 int length = java_lang_String::length(java_string, value);
764 bool is_latin1 = java_lang_String::is_latin1(java_string);
765
766 st->print("\"");
767 for (int index = 0; index < length; index++) {
768 st->print("%c", (!is_latin1) ? value->char_at(index) :
769 ((jchar) value->byte_at(index)) & 0xff );
770 }
771 st->print("\"");
772 }
773
774
775 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
776 assert(mirror.not_null() && fd->is_static(), "just checking");
777 if (fd->has_initial_value()) {
778 BasicType t = fd->field_type();
779 switch (t) {
780 case T_BYTE:
781 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
782 break;
783 case T_BOOLEAN:
784 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
785 break;
786 case T_CHAR:
787 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
788 break;
789 case T_SHORT:
790 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
791 break;
792 case T_INT:
793 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
794 break;
795 case T_FLOAT:
796 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
797 break;
798 case T_DOUBLE:
799 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
800 break;
801 case T_LONG:
802 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
803 break;
804 case T_OBJECT:
805 {
806 assert(fd->signature() == vmSymbols::string_signature(),
807 "just checking");
808 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
809 // Archive the String field and update the pointer.
810 oop s = mirror()->obj_field(fd->offset());
811 oop archived_s = StringTable::create_archived_string(s, CHECK);
812 mirror()->obj_field_put(fd->offset(), archived_s);
813 } else {
814 oop string = fd->string_initial_value(CHECK);
815 mirror()->obj_field_put(fd->offset(), string);
816 }
817 }
818 break;
819 default:
820 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
821 "Illegal ConstantValue attribute in class file");
822 }
823 }
824 }
825
826
827 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
828 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
829
830 // If the offset was read from the shared archive, it was fixed up already
831 if (!k->is_shared()) {
832 if (k->is_instance_klass()) {
833 // During bootstrap, java.lang.Class wasn't loaded so static field
834 // offsets were computed without the size added it. Go back and
835 // update all the static field offsets to included the size.
836 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
837 if (fs.access_flags().is_static()) {
838 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
839 fs.set_offset(real_offset);
840 }
841 }
842 }
843 }
844
845 if (k->is_shared() && k->has_raw_archived_mirror()) {
846 if (HeapShared::open_archive_heap_region_mapped()) {
847 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
848 assert(present, "Missing archived mirror for %s", k->external_name());
849 return;
850 } else {
851 k->set_java_mirror_handle(NULL);
852 k->clear_has_raw_archived_mirror();
853 }
854 }
855 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
856 }
857
858 void java_lang_Class::initialize_mirror_fields(Klass* k,
859 Handle mirror,
860 Handle protection_domain,
861 Handle classData,
862 TRAPS) {
863 // Allocate a simple java object for a lock.
864 // This needs to be a java object because during class initialization
865 // it can be held across a java call.
866 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
867 set_init_lock(mirror(), r);
868
869 // Set protection domain also
870 set_protection_domain(mirror(), protection_domain());
871
872 // Initialize static fields
873 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
874
875 // Set classData
876 set_class_data(mirror(), classData());
877 }
878
879 // Set the java.lang.Module module field in the java_lang_Class mirror
880 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
881 if (module.is_null()) {
882 // During startup, the module may be NULL only if java.base has not been defined yet.
883 // Put the class on the fixup_module_list to patch later when the java.lang.Module
884 // for java.base is known. But note that since we captured the NULL module another
885 // thread may have completed that initialization.
886
887 bool javabase_was_defined = false;
888 {
889 MutexLocker m1(THREAD, Module_lock);
890 // Keep list of classes needing java.base module fixup
891 if (!ModuleEntryTable::javabase_defined()) {
892 assert(k->java_mirror() != NULL, "Class's mirror is null");
893 k->class_loader_data()->inc_keep_alive();
894 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
895 fixup_module_field_list()->push(k);
896 } else {
897 javabase_was_defined = true;
898 }
899 }
900
901 // If java.base was already defined then patch this particular class with java.base.
902 if (javabase_was_defined) {
903 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
904 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
905 "Setting class module field, " JAVA_BASE_NAME " should be defined");
906 Handle javabase_handle(THREAD, javabase_entry->module());
907 set_module(mirror(), javabase_handle());
908 }
909 } else {
910 assert(Universe::is_module_initialized() ||
911 (ModuleEntryTable::javabase_defined() &&
912 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
913 "Incorrect java.lang.Module specification while creating mirror");
914 set_module(mirror(), module());
915 }
916 }
917
918 // Statically allocate fixup lists because they always get created.
919 void java_lang_Class::allocate_fixup_lists() {
920 GrowableArray<Klass*>* mirror_list =
921 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
922 set_fixup_mirror_list(mirror_list);
923
924 GrowableArray<Klass*>* module_list =
925 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
926 set_fixup_module_field_list(module_list);
927 }
928
929 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
930 Handle module, Handle protection_domain,
931 Handle classData, TRAPS) {
932 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
933 assert(k->java_mirror() == NULL, "should only assign mirror once");
934
935 // Use this moment of initialization to cache modifier_flags also,
936 // to support Class.getModifiers(). Instance classes recalculate
937 // the cached flags after the class file is parsed, but before the
938 // class is put into the system dictionary.
939 int computed_modifiers = k->compute_modifier_flags(CHECK);
940 k->set_modifier_flags(computed_modifiers);
941 // Class_klass has to be loaded because it is used to allocate
942 // the mirror.
943 if (SystemDictionary::Class_klass_loaded()) {
944 // Allocate mirror (java.lang.Class instance)
945 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
946 Handle mirror(THREAD, mirror_oop);
947 Handle comp_mirror;
948
949 // Setup indirection from mirror->klass
950 java_lang_Class::set_klass(mirror(), k);
951
952 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
953 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
954
955 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
956
957 // It might also have a component mirror. This mirror must already exist.
958 if (k->is_array_klass()) {
959 if (k->is_typeArray_klass()) {
960 BasicType type = TypeArrayKlass::cast(k)->element_type();
961 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
962 } else {
963 assert(k->is_objArray_klass(), "Must be");
964 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
965 assert(element_klass != NULL, "Must have an element klass");
966 comp_mirror = Handle(THREAD, element_klass->java_mirror());
967 }
968 assert(comp_mirror() != NULL, "must have a mirror");
969
970 // Two-way link between the array klass and its component mirror:
971 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
972 set_component_mirror(mirror(), comp_mirror());
973 // See below for ordering dependencies between field array_klass in component mirror
974 // and java_mirror in this klass.
975 } else {
976 assert(k->is_instance_klass(), "Must be");
977
978 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
979 if (HAS_PENDING_EXCEPTION) {
980 // If any of the fields throws an exception like OOM remove the klass field
981 // from the mirror so GC doesn't follow it after the klass has been deallocated.
982 // This mirror looks like a primitive type, which logically it is because it
983 // it represents no class.
984 java_lang_Class::set_klass(mirror(), NULL);
985 return;
986 }
987 }
988
989 // set the classLoader field in the java_lang_Class instance
990 assert(class_loader() == k->class_loader(), "should be same");
991 set_class_loader(mirror(), class_loader());
992
993 // Setup indirection from klass->mirror
994 // after any exceptions can happen during allocations.
995 k->set_java_mirror(mirror);
996
997 // Set the module field in the java_lang_Class instance. This must be done
998 // after the mirror is set.
999 set_mirror_module_field(k, mirror, module, THREAD);
1000
1001 if (comp_mirror() != NULL) {
1002 // Set after k->java_mirror() is published, because compiled code running
1003 // concurrently doesn't expect a k to have a null java_mirror.
1004 release_set_array_klass(comp_mirror(), k);
1005 }
1006 } else {
1007 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1008 fixup_mirror_list()->push(k);
1009 }
1010 }
1011
1012 #if INCLUDE_CDS_JAVA_HEAP
1013 // Clears mirror fields. Static final fields with initial values are reloaded
1014 // from constant pool. The object identity hash is in the object header and is
1015 // not affected.
1016 class ResetMirrorField: public FieldClosure {
1017 private:
1018 Handle _m;
1019
1020 public:
1021 ResetMirrorField(Handle mirror) : _m(mirror) {}
1022
1023 void do_field(fieldDescriptor* fd) {
1024 assert(DumpSharedSpaces, "dump time only");
1025 assert(_m.not_null(), "Mirror cannot be NULL");
1026
1027 if (fd->is_static() && fd->has_initial_value()) {
1028 initialize_static_field(fd, _m, Thread::current());
1029 return;
1030 }
1031
1032 BasicType ft = fd->field_type();
1033 switch (ft) {
1034 case T_BYTE:
1035 _m()->byte_field_put(fd->offset(), 0);
1036 break;
1037 case T_CHAR:
1038 _m()->char_field_put(fd->offset(), 0);
1039 break;
1040 case T_DOUBLE:
1041 _m()->double_field_put(fd->offset(), 0);
1042 break;
1043 case T_FLOAT:
1044 _m()->float_field_put(fd->offset(), 0);
1045 break;
1046 case T_INT:
1047 _m()->int_field_put(fd->offset(), 0);
1048 break;
1049 case T_LONG:
1050 _m()->long_field_put(fd->offset(), 0);
1051 break;
1052 case T_SHORT:
1053 _m()->short_field_put(fd->offset(), 0);
1054 break;
1055 case T_BOOLEAN:
1056 _m()->bool_field_put(fd->offset(), false);
1057 break;
1058 case T_ARRAY:
1059 case T_OBJECT: {
1060 // It might be useful to cache the String field, but
1061 // for now just clear out any reference field
1062 oop o = _m()->obj_field(fd->offset());
1063 _m()->obj_field_put(fd->offset(), NULL);
1064 break;
1065 }
1066 default:
1067 ShouldNotReachHere();
1068 break;
1069 }
1070 }
1071 };
1072
1073 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1074 assert(HeapShared::is_heap_object_archiving_allowed(),
1075 "HeapShared::is_heap_object_archiving_allowed() must be true");
1076
1077 for (int t = 0; t <= T_VOID; t++) {
1078 oop m = Universe::_mirrors[t];
1079 if (m != NULL) {
1080 // Update the field at _array_klass_offset to point to the relocated array klass.
1081 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1082 assert(archived_m != NULL, "sanity");
1083 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1084 assert(ak != NULL || t == T_VOID, "should not be NULL");
1085 if (ak != NULL) {
1086 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1087 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1088 }
1089
1090 // Clear the fields. Just to be safe
1091 Klass *k = m->klass();
1092 Handle archived_mirror_h(THREAD, archived_m);
1093 ResetMirrorField reset(archived_mirror_h);
1094 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1095
1096 log_trace(cds, heap, mirror)(
1097 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1098 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1099
1100 Universe::_mirrors[t] = archived_m;
1101 }
1102 }
1103
1104 assert(Universe::_mirrors[T_INT] != NULL &&
1105 Universe::_mirrors[T_FLOAT] != NULL &&
1106 Universe::_mirrors[T_DOUBLE] != NULL &&
1107 Universe::_mirrors[T_BYTE] != NULL &&
1108 Universe::_mirrors[T_BOOLEAN] != NULL &&
1109 Universe::_mirrors[T_CHAR] != NULL &&
1110 Universe::_mirrors[T_LONG] != NULL &&
1111 Universe::_mirrors[T_SHORT] != NULL &&
1112 Universe::_mirrors[T_VOID] != NULL, "sanity");
1113
1114 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1115 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1116 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1117 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1118 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1119 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1120 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1121 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1122 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1123 }
1124
1125 //
1126 // After the mirror object is successfully archived, the archived
1127 // klass is set with _has_archived_raw_mirror flag.
1128 //
1129 // The _has_archived_raw_mirror flag is cleared at runtime when the
1130 // archived mirror is restored. If archived java heap data cannot
1131 // be used at runtime, new mirror object is created for the shared
1132 // class. The _has_archived_raw_mirror is cleared also during the process.
1133 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1134 assert(HeapShared::is_heap_object_archiving_allowed(),
1135 "HeapShared::is_heap_object_archiving_allowed() must be true");
1136
1137 // Mirror is already archived
1138 if (k->has_raw_archived_mirror()) {
1139 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1140 return k->archived_java_mirror_raw();
1141 }
1142
1143 // No mirror
1144 oop mirror = k->java_mirror();
1145 if (mirror == NULL) {
1146 return NULL;
1147 }
1148
1149 if (k->is_instance_klass()) {
1150 InstanceKlass *ik = InstanceKlass::cast(k);
1151 assert(ik->signers() == NULL, "class with signer should have been excluded");
1152
1153 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1154 ik->is_shared_app_class())) {
1155 // Archiving mirror for classes from non-builtin loaders is not
1156 // supported. Clear the _java_mirror within the archived class.
1157 k->set_java_mirror_handle(NULL);
1158 return NULL;
1159 }
1160 }
1161
1162 // Now start archiving the mirror object
1163 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1164 if (archived_mirror == NULL) {
1165 return NULL;
1166 }
1167
1168 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1169 if (archived_mirror == NULL) {
1170 return NULL;
1171 }
1172
1173 k->set_archived_java_mirror_raw(archived_mirror);
1174
1175 k->set_has_raw_archived_mirror();
1176
1177 ResourceMark rm;
1178 log_trace(cds, heap, mirror)(
1179 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1180 k->external_name(), p2i(mirror), p2i(archived_mirror));
1181
1182 return archived_mirror;
1183 }
1184
1185 // The process is based on create_mirror().
1186 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1187 oop archived_mirror,
1188 Thread *THREAD) {
1189 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1190 // to archived metadata and objects below.
1191 Klass *c = archived_mirror->klass();
1192 Handle archived_mirror_h(THREAD, archived_mirror);
1193 ResetMirrorField reset(archived_mirror_h);
1194 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1195
1196 if (k->is_array_klass()) {
1197 oop archived_comp_mirror;
1198 if (k->is_typeArray_klass()) {
1199 // The primitive type mirrors are already archived. Get the archived mirror.
1200 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1201 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1202 assert(archived_comp_mirror != NULL, "Must be");
1203 } else {
1204 assert(k->is_objArray_klass(), "Must be");
1205 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1206 assert(element_klass != NULL, "Must have an element klass");
1207 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1208 if (archived_comp_mirror == NULL) {
1209 return NULL;
1210 }
1211 }
1212 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1213 } else {
1214 assert(k->is_instance_klass(), "Must be");
1215
1216 // Reset local static fields in the mirror
1217 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1218
1219 java_lang_Class:set_init_lock(archived_mirror, NULL);
1220
1221 set_protection_domain(archived_mirror, NULL);
1222 }
1223
1224 // clear class loader and mirror_module_field
1225 set_class_loader(archived_mirror, NULL);
1226 set_module(archived_mirror, NULL);
1227
1228 // The archived mirror's field at _klass_offset is still pointing to the original
1229 // klass. Updated the field in the archived mirror to point to the relocated
1230 // klass in the archive.
1231 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1232 log_debug(cds, heap, mirror)(
1233 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1234 p2i(as_Klass(mirror)), p2i(reloc_k));
1235 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1236
1237 // The field at _array_klass_offset is pointing to the original one dimension
1238 // higher array klass if exists. Relocate the pointer.
1239 Klass *arr = array_klass_acquire(mirror);
1240 if (arr != NULL) {
1241 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1242 log_debug(cds, heap, mirror)(
1243 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1244 p2i(arr), p2i(reloc_arr));
1245 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1246 }
1247 return archived_mirror;
1248 }
1249
1250 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1251 if (MetaspaceShared::relocation_delta() != 0) {
1252 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1253
1254 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1255 if (ak != NULL) {
1256 archived_mirror->metadata_field_put(_array_klass_offset,
1257 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1258 }
1259 }
1260 }
1261
1262 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1263 if (MetaspaceShared::relocation_delta() != 0) {
1264 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1265 archived_mirror->metadata_field_put(_klass_offset,
1266 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1267
1268 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1269 if (ak != NULL) {
1270 archived_mirror->metadata_field_put(_array_klass_offset,
1271 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1272 }
1273 }
1274 }
1275
1276
1277 // Returns true if the mirror is updated, false if no archived mirror
1278 // data is present. After the archived mirror object is restored, the
1279 // shared klass' _has_raw_archived_mirror flag is cleared.
1280 bool java_lang_Class::restore_archived_mirror(Klass *k,
1281 Handle class_loader, Handle module,
1282 Handle protection_domain, TRAPS) {
1283 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1284 // see more details in SystemDictionary::resolve_well_known_classes().
1285 if (!SystemDictionary::Class_klass_loaded()) {
1286 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1287 fixup_mirror_list()->push(k);
1288 return true;
1289 }
1290
1291 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1292 if (m == NULL) {
1293 return false;
1294 }
1295
1296 // mirror is archived, restore
1297 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1298 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1299 update_archived_mirror_native_pointers(m);
1300 assert(as_Klass(m) == k, "must be");
1301 Handle mirror(THREAD, m);
1302
1303 if (!k->is_array_klass()) {
1304 // - local static final fields with initial values were initialized at dump time
1305
1306 // create the init_lock
1307 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1308 set_init_lock(mirror(), r);
1309
1310 if (protection_domain.not_null()) {
1311 set_protection_domain(mirror(), protection_domain());
1312 }
1313 }
1314
1315 assert(class_loader() == k->class_loader(), "should be same");
1316 if (class_loader.not_null()) {
1317 set_class_loader(mirror(), class_loader());
1318 }
1319
1320 k->set_java_mirror(mirror);
1321 k->clear_has_raw_archived_mirror();
1322
1323 set_mirror_module_field(k, mirror, module, THREAD);
1324
1325 if (log_is_enabled(Trace, cds, heap, mirror)) {
1326 ResourceMark rm(THREAD);
1327 log_trace(cds, heap, mirror)(
1328 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1329 }
1330
1331 return true;
1332 }
1333 #endif // INCLUDE_CDS_JAVA_HEAP
1334
1335 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1336 assert(_module_offset != 0, "must have been computed already");
1337 java_lang_Class::set_module(k->java_mirror(), module());
1338 }
1339
1340 int java_lang_Class::oop_size(oop java_class) {
1341 assert(_oop_size_offset != 0, "must be set");
1342 int size = java_class->int_field(_oop_size_offset);
1343 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1344 return size;
1345 }
1346
1347
1348 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1349 assert(_oop_size_offset != 0, "must be set");
1350 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1351 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1352 }
1353
1354 int java_lang_Class::static_oop_field_count(oop java_class) {
1355 assert(_static_oop_field_count_offset != 0, "must be set");
1356 return java_class->int_field(_static_oop_field_count_offset);
1357 }
1358
1359 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1360 assert(_static_oop_field_count_offset != 0, "must be set");
1361 return java_class->int_field_raw(_static_oop_field_count_offset);
1362 }
1363
1364 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1365 assert(_static_oop_field_count_offset != 0, "must be set");
1366 java_class->int_field_put(_static_oop_field_count_offset, size);
1367 }
1368
1369 oop java_lang_Class::protection_domain(oop java_class) {
1370 assert(_protection_domain_offset != 0, "must be set");
1371 return java_class->obj_field(_protection_domain_offset);
1372 }
1373 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1374 assert(_protection_domain_offset != 0, "must be set");
1375 java_class->obj_field_put(_protection_domain_offset, pd);
1376 }
1377
1378 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1379 assert(_component_mirror_offset != 0, "must be set");
1380 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1381 }
1382 oop java_lang_Class::component_mirror(oop java_class) {
1383 assert(_component_mirror_offset != 0, "must be set");
1384 return java_class->obj_field(_component_mirror_offset);
1385 }
1386
1387 oop java_lang_Class::init_lock(oop java_class) {
1388 assert(_init_lock_offset != 0, "must be set");
1389 return java_class->obj_field(_init_lock_offset);
1390 }
1391 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1392 assert(_init_lock_offset != 0, "must be set");
1393 java_class->obj_field_put(_init_lock_offset, init_lock);
1394 }
1395
1396 objArrayOop java_lang_Class::signers(oop java_class) {
1397 assert(_signers_offset != 0, "must be set");
1398 return (objArrayOop)java_class->obj_field(_signers_offset);
1399 }
1400 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1401 assert(_signers_offset != 0, "must be set");
1402 java_class->obj_field_put(_signers_offset, (oop)signers);
1403 }
1404
1405 oop java_lang_Class::class_data(oop java_class) {
1406 assert(_classData_offset != 0, "must be set");
1407 return java_class->obj_field(_classData_offset);
1408 }
1409 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1410 assert(_classData_offset != 0, "must be set");
1411 java_class->obj_field_put(_classData_offset, class_data);
1412 }
1413
1414 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1415 assert(_class_loader_offset != 0, "offsets should have been initialized");
1416 java_class->obj_field_put(_class_loader_offset, loader);
1417 }
1418
1419 oop java_lang_Class::class_loader(oop java_class) {
1420 assert(_class_loader_offset != 0, "must be set");
1421 return java_class->obj_field(_class_loader_offset);
1422 }
1423
1424 oop java_lang_Class::module(oop java_class) {
1425 assert(_module_offset != 0, "must be set");
1426 return java_class->obj_field(_module_offset);
1427 }
1428
1429 void java_lang_Class::set_module(oop java_class, oop module) {
1430 assert(_module_offset != 0, "must be set");
1431 java_class->obj_field_put(_module_offset, module);
1432 }
1433
1434 oop java_lang_Class::name(Handle java_class, TRAPS) {
1435 assert(_name_offset != 0, "must be set");
1436 oop o = java_class->obj_field(_name_offset);
1437 if (o == NULL) {
1438 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1439 java_class->obj_field_put(_name_offset, o);
1440 }
1441 return o;
1442 }
1443
1444 oop java_lang_Class::source_file(oop java_class) {
1445 assert(_source_file_offset != 0, "must be set");
1446 return java_class->obj_field(_source_file_offset);
1447 }
1448
1449 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1450 assert(_source_file_offset != 0, "must be set");
1451 java_class->obj_field_put(_source_file_offset, source_file);
1452 }
1453
1454 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1455 // This should be improved by adding a field at the Java level or by
1456 // introducing a new VM klass (see comment in ClassFileParser)
1457 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1458 if (type != T_VOID) {
1459 Klass* aklass = Universe::typeArrayKlassObj(type);
1460 assert(aklass != NULL, "correct bootstrap");
1461 release_set_array_klass(java_class, aklass);
1462 }
1463 #ifdef ASSERT
1464 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1465 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1466 #endif
1467 return java_class;
1468 }
1469
1470
1471 Klass* java_lang_Class::as_Klass(oop java_class) {
1472 //%note memory_2
1473 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1474 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1475 assert(k == NULL || k->is_klass(), "type check");
1476 return k;
1477 }
1478
1479 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1480 //%note memory_2
1481 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1482 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1483 assert(k == NULL || k->is_klass(), "type check");
1484 return k;
1485 }
1486
1487
1488 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1489 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1490 java_class->metadata_field_put(_klass_offset, klass);
1491 }
1492
1493
1494 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1495 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1496 Symbol* name = NULL;
1497 bool is_instance = false;
1498 if (is_primitive(java_class)) {
1499 name = vmSymbols::type_signature(primitive_type(java_class));
1500 } else {
1501 Klass* k = as_Klass(java_class);
1502 is_instance = k->is_instance_klass();
1503 name = k->name();
1504 }
1505 if (name == NULL) {
1506 st->print("<null>");
1507 return;
1508 }
1509 if (is_instance) st->print("L");
1510 st->write((char*) name->base(), (int) name->utf8_length());
1511 if (is_instance) st->print(";");
1512 }
1513
1514 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1515 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1516 Symbol* name;
1517 if (is_primitive(java_class)) {
1518 name = vmSymbols::type_signature(primitive_type(java_class));
1519 // Because this can create a new symbol, the caller has to decrement
1520 // the refcount, so make adjustment here and below for symbols returned
1521 // that are not created or incremented due to a successful lookup.
1522 name->increment_refcount();
1523 } else {
1524 Klass* k = as_Klass(java_class);
1525 if (!k->is_instance_klass()) {
1526 name = k->name();
1527 name->increment_refcount();
1528 } else {
1529 ResourceMark rm;
1530 const char* sigstr = k->signature_name();
1531 int siglen = (int) strlen(sigstr);
1532 if (!intern_if_not_found) {
1533 name = SymbolTable::probe(sigstr, siglen);
1534 } else {
1535 name = SymbolTable::new_symbol(sigstr, siglen);
1536 }
1537 }
1538 }
1539 return name;
1540 }
1541
1542 // Returns the Java name for this Java mirror (Resource allocated)
1543 // See Klass::external_name().
1544 // For primitive type Java mirrors, its type name is returned.
1545 const char* java_lang_Class::as_external_name(oop java_class) {
1546 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1547 const char* name = NULL;
1548 if (is_primitive(java_class)) {
1549 name = type2name(primitive_type(java_class));
1550 } else {
1551 name = as_Klass(java_class)->external_name();
1552 }
1553 if (name == NULL) {
1554 name = "<null>";
1555 }
1556 return name;
1557 }
1558
1559 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1560 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1561 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1562 return k;
1563 }
1564
1565
1566 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1567 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1568 java_class->release_metadata_field_put(_array_klass_offset, klass);
1569 }
1570
1571
1572 BasicType java_lang_Class::primitive_type(oop java_class) {
1573 assert(java_lang_Class::is_primitive(java_class), "just checking");
1574 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1575 BasicType type = T_VOID;
1576 if (ak != NULL) {
1577 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1578 type = ArrayKlass::cast(ak)->element_type();
1579 } else {
1580 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1581 }
1582 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1583 return type;
1584 }
1585
1586 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1587 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1588 if (is_primitive(java_class)) {
1589 if (reference_klass != NULL)
1590 (*reference_klass) = NULL;
1591 return primitive_type(java_class);
1592 } else {
1593 if (reference_klass != NULL)
1594 (*reference_klass) = as_Klass(java_class);
1595 return T_OBJECT;
1596 }
1597 }
1598
1599
1600 oop java_lang_Class::primitive_mirror(BasicType t) {
1601 oop mirror = Universe::java_mirror(t);
1602 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1603 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1604 return mirror;
1605 }
1606
1607 bool java_lang_Class::offsets_computed = false;
1608 int java_lang_Class::classRedefinedCount_offset = -1;
1609
1610 #define CLASS_FIELDS_DO(macro) \
1611 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1612 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1613 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1614 macro(_module_offset, k, "module", module_signature, false); \
1615 macro(_name_offset, k, "name", string_signature, false); \
1616 macro(_classData_offset, k, "classData", object_signature, false);
1617
1618 void java_lang_Class::compute_offsets() {
1619 if (offsets_computed) {
1620 return;
1621 }
1622
1623 offsets_computed = true;
1624
1625 InstanceKlass* k = SystemDictionary::Class_klass();
1626 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1627
1628 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1629 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1630 // GC treats them the same.
1631 _init_lock_offset = _component_mirror_offset;
1632
1633 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1634 }
1635
1636 #if INCLUDE_CDS
1637 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1638 f->do_bool(&offsets_computed);
1639 f->do_u4((u4*)&_init_lock_offset);
1640
1641 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1642
1643 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1644 }
1645 #endif
1646
1647 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1648 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1649 return the_class_mirror->int_field(classRedefinedCount_offset);
1650 }
1651
1652 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1653 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1654 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1655 }
1656
1657
1658 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1659 // platform thread structure, and a eetop offset which was used for thread
1660 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1661 // merged, so in the HotSpot VM we just use the eetop field for the thread
1662 // instead of the privateInfo_offset.
1663 //
1664 // Note: The stackSize field is only present starting in 1.4.
1665
1666 int java_lang_Thread::_name_offset = 0;
1667 int java_lang_Thread::_group_offset = 0;
1668 int java_lang_Thread::_contextClassLoader_offset = 0;
1669 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1670 int java_lang_Thread::_priority_offset = 0;
1671 int java_lang_Thread::_eetop_offset = 0;
1672 int java_lang_Thread::_interrupted_offset = 0;
1673 int java_lang_Thread::_daemon_offset = 0;
1674 int java_lang_Thread::_stillborn_offset = 0;
1675 int java_lang_Thread::_stackSize_offset = 0;
1676 int java_lang_Thread::_tid_offset = 0;
1677 int java_lang_Thread::_thread_status_offset = 0;
1678 int java_lang_Thread::_park_blocker_offset = 0;
1679
1680 #define THREAD_FIELDS_DO(macro) \
1681 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1682 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1683 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1684 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1685 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1686 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1687 macro(_eetop_offset, k, "eetop", long_signature, false); \
1688 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1689 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1690 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1691 macro(_tid_offset, k, "tid", long_signature, false); \
1692 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1693 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1694
1695 void java_lang_Thread::compute_offsets() {
1696 assert(_group_offset == 0, "offsets should be initialized only once");
1697
1698 InstanceKlass* k = SystemDictionary::Thread_klass();
1699 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1700 }
1701
1702 #if INCLUDE_CDS
1703 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1704 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1705 }
1706 #endif
1707
1708 JavaThread* java_lang_Thread::thread(oop java_thread) {
1709 return (JavaThread*)java_thread->address_field(_eetop_offset);
1710 }
1711
1712
1713 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1714 java_thread->address_field_put(_eetop_offset, (address)thread);
1715 }
1716
1717 bool java_lang_Thread::interrupted(oop java_thread) {
1718 // Make sure the caller can safely access oops.
1719 assert(Thread::current()->is_VM_thread() ||
1720 (JavaThread::current()->thread_state() != _thread_blocked &&
1721 JavaThread::current()->thread_state() != _thread_in_native),
1722 "Unsafe access to oop");
1723 return java_thread->bool_field_volatile(_interrupted_offset);
1724 }
1725
1726 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1727 // Make sure the caller can safely access oops.
1728 assert(Thread::current()->is_VM_thread() ||
1729 (JavaThread::current()->thread_state() != _thread_blocked &&
1730 JavaThread::current()->thread_state() != _thread_in_native),
1731 "Unsafe access to oop");
1732 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1733 }
1734
1735
1736 oop java_lang_Thread::name(oop java_thread) {
1737 return java_thread->obj_field(_name_offset);
1738 }
1739
1740
1741 void java_lang_Thread::set_name(oop java_thread, oop name) {
1742 java_thread->obj_field_put(_name_offset, name);
1743 }
1744
1745
1746 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1747 return (ThreadPriority)java_thread->int_field(_priority_offset);
1748 }
1749
1750
1751 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1752 java_thread->int_field_put(_priority_offset, priority);
1753 }
1754
1755
1756 oop java_lang_Thread::threadGroup(oop java_thread) {
1757 return java_thread->obj_field(_group_offset);
1758 }
1759
1760
1761 bool java_lang_Thread::is_stillborn(oop java_thread) {
1762 return java_thread->bool_field(_stillborn_offset) != 0;
1763 }
1764
1765
1766 // We never have reason to turn the stillborn bit off
1767 void java_lang_Thread::set_stillborn(oop java_thread) {
1768 java_thread->bool_field_put(_stillborn_offset, true);
1769 }
1770
1771
1772 bool java_lang_Thread::is_alive(oop java_thread) {
1773 JavaThread* thr = java_lang_Thread::thread(java_thread);
1774 return (thr != NULL);
1775 }
1776
1777
1778 bool java_lang_Thread::is_daemon(oop java_thread) {
1779 return java_thread->bool_field(_daemon_offset) != 0;
1780 }
1781
1782
1783 void java_lang_Thread::set_daemon(oop java_thread) {
1784 java_thread->bool_field_put(_daemon_offset, true);
1785 }
1786
1787 oop java_lang_Thread::context_class_loader(oop java_thread) {
1788 return java_thread->obj_field(_contextClassLoader_offset);
1789 }
1790
1791 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1792 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1793 }
1794
1795
1796 jlong java_lang_Thread::stackSize(oop java_thread) {
1797 return java_thread->long_field(_stackSize_offset);
1798 }
1799
1800 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1801 void java_lang_Thread::set_thread_status(oop java_thread,
1802 java_lang_Thread::ThreadStatus status) {
1803 java_thread->int_field_put(_thread_status_offset, status);
1804 }
1805
1806 // Read thread status value from threadStatus field in java.lang.Thread java class.
1807 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1808 // Make sure the caller is operating on behalf of the VM or is
1809 // running VM code (state == _thread_in_vm).
1810 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1811 JavaThread::current()->thread_state() == _thread_in_vm,
1812 "Java Thread is not running in vm");
1813 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1814 }
1815
1816
1817 jlong java_lang_Thread::thread_id(oop java_thread) {
1818 return java_thread->long_field(_tid_offset);
1819 }
1820
1821 oop java_lang_Thread::park_blocker(oop java_thread) {
1822 return java_thread->obj_field(_park_blocker_offset);
1823 }
1824
1825 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1826 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1827 switch (status) {
1828 case NEW : return "NEW";
1829 case RUNNABLE : return "RUNNABLE";
1830 case SLEEPING : return "TIMED_WAITING (sleeping)";
1831 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1832 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1833 case PARKED : return "WAITING (parking)";
1834 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1835 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1836 case TERMINATED : return "TERMINATED";
1837 default : return "UNKNOWN";
1838 };
1839 }
1840 int java_lang_ThreadGroup::_parent_offset = 0;
1841 int java_lang_ThreadGroup::_name_offset = 0;
1842 int java_lang_ThreadGroup::_threads_offset = 0;
1843 int java_lang_ThreadGroup::_groups_offset = 0;
1844 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1845 int java_lang_ThreadGroup::_destroyed_offset = 0;
1846 int java_lang_ThreadGroup::_daemon_offset = 0;
1847 int java_lang_ThreadGroup::_nthreads_offset = 0;
1848 int java_lang_ThreadGroup::_ngroups_offset = 0;
1849
1850 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1851 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1852 return java_thread_group->obj_field(_parent_offset);
1853 }
1854
1855 // ("name as oop" accessor is not necessary)
1856
1857 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1858 oop name = java_thread_group->obj_field(_name_offset);
1859 // ThreadGroup.name can be null
1860 if (name != NULL) {
1861 return java_lang_String::as_utf8_string(name);
1862 }
1863 return NULL;
1864 }
1865
1866 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1867 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1868 return java_thread_group->int_field(_nthreads_offset);
1869 }
1870
1871 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1872 oop threads = java_thread_group->obj_field(_threads_offset);
1873 assert(threads != NULL, "threadgroups should have threads");
1874 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1875 return objArrayOop(threads);
1876 }
1877
1878 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1879 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1880 return java_thread_group->int_field(_ngroups_offset);
1881 }
1882
1883 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1884 oop groups = java_thread_group->obj_field(_groups_offset);
1885 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1886 return objArrayOop(groups);
1887 }
1888
1889 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1890 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1891 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1892 }
1893
1894 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1895 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1896 return java_thread_group->bool_field(_destroyed_offset) != 0;
1897 }
1898
1899 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1900 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1901 return java_thread_group->bool_field(_daemon_offset) != 0;
1902 }
1903
1904 #define THREADGROUP_FIELDS_DO(macro) \
1905 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1906 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1907 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1908 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1909 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1910 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1911 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1912 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1913 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1914
1915 void java_lang_ThreadGroup::compute_offsets() {
1916 assert(_parent_offset == 0, "offsets should be initialized only once");
1917
1918 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1919 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1920 }
1921
1922 #if INCLUDE_CDS
1923 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1924 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1925 }
1926 #endif
1927
1928 #define THROWABLE_FIELDS_DO(macro) \
1929 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1930 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1931 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1932 macro(depth_offset, k, "depth", int_signature, false); \
1933 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1934
1935 void java_lang_Throwable::compute_offsets() {
1936 InstanceKlass* k = SystemDictionary::Throwable_klass();
1937 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1938 }
1939
1940 #if INCLUDE_CDS
1941 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1942 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1943 }
1944 #endif
1945
1946 oop java_lang_Throwable::unassigned_stacktrace() {
1947 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1948 oop base = ik->static_field_base_raw();
1949 return base->obj_field(static_unassigned_stacktrace_offset);
1950 }
1951
1952 oop java_lang_Throwable::backtrace(oop throwable) {
1953 return throwable->obj_field_acquire(backtrace_offset);
1954 }
1955
1956
1957 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1958 throwable->release_obj_field_put(backtrace_offset, value);
1959 }
1960
1961 int java_lang_Throwable::depth(oop throwable) {
1962 return throwable->int_field(depth_offset);
1963 }
1964
1965 void java_lang_Throwable::set_depth(oop throwable, int value) {
1966 throwable->int_field_put(depth_offset, value);
1967 }
1968
1969 oop java_lang_Throwable::message(oop throwable) {
1970 return throwable->obj_field(detailMessage_offset);
1971 }
1972
1973
1974 // Return Symbol for detailed_message or NULL
1975 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1976 PRESERVE_EXCEPTION_MARK; // Keep original exception
1977 oop detailed_message = java_lang_Throwable::message(throwable);
1978 if (detailed_message != NULL) {
1979 return java_lang_String::as_symbol(detailed_message);
1980 }
1981 return NULL;
1982 }
1983
1984 void java_lang_Throwable::set_message(oop throwable, oop value) {
1985 throwable->obj_field_put(detailMessage_offset, value);
1986 }
1987
1988
1989 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1990 throwable->obj_field_put(stackTrace_offset, st_element_array);
1991 }
1992
1993 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1994 set_stacktrace(throwable, NULL);
1995 }
1996
1997
1998 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1999 ResourceMark rm;
2000 Klass* k = throwable->klass();
2001 assert(k != NULL, "just checking");
2002 st->print("%s", k->external_name());
2003 oop msg = message(throwable);
2004 if (msg != NULL) {
2005 st->print(": %s", java_lang_String::as_utf8_string(msg));
2006 }
2007 }
2008
2009 // After this many redefines, the stack trace is unreliable.
2010 const int MAX_VERSION = USHRT_MAX;
2011
2012 static inline bool version_matches(Method* method, int version) {
2013 assert(version < MAX_VERSION, "version is too big");
2014 return method != NULL && (method->constants()->version() == version);
2015 }
2016
2017 // This class provides a simple wrapper over the internal structure of
2018 // exception backtrace to insulate users of the backtrace from needing
2019 // to know what it looks like.
2020 // The code of this class is not GC safe. Allocations can only happen
2021 // in expand().
2022 class BacktraceBuilder: public StackObj {
2023 friend class BacktraceIterator;
2024 private:
2025 Handle _backtrace;
2026 objArrayOop _head;
2027 typeArrayOop _methods;
2028 typeArrayOop _bcis;
2029 objArrayOop _mirrors;
2030 typeArrayOop _names; // Needed to insulate method name against redefinition.
2031 // True if the top frame of the backtrace is omitted because it shall be hidden.
2032 bool _has_hidden_top_frame;
2033 int _index;
2034 NoSafepointVerifier _nsv;
2035
2036 enum {
2037 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2038 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2039 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2040 trace_names_offset = java_lang_Throwable::trace_names_offset,
2041 trace_next_offset = java_lang_Throwable::trace_next_offset,
2042 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2043 trace_size = java_lang_Throwable::trace_size,
2044 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2045 };
2046
2047 // get info out of chunks
2048 static typeArrayOop get_methods(objArrayHandle chunk) {
2049 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2050 assert(methods != NULL, "method array should be initialized in backtrace");
2051 return methods;
2052 }
2053 static typeArrayOop get_bcis(objArrayHandle chunk) {
2054 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2055 assert(bcis != NULL, "bci array should be initialized in backtrace");
2056 return bcis;
2057 }
2058 static objArrayOop get_mirrors(objArrayHandle chunk) {
2059 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2060 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2061 return mirrors;
2062 }
2063 static typeArrayOop get_names(objArrayHandle chunk) {
2064 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2065 assert(names != NULL, "names array should be initialized in backtrace");
2066 return names;
2067 }
2068 static bool has_hidden_top_frame(objArrayHandle chunk) {
2069 oop hidden = chunk->obj_at(trace_hidden_offset);
2070 return hidden != NULL;
2071 }
2072
2073 public:
2074
2075 // constructor for new backtrace
2076 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2077 expand(CHECK);
2078 _backtrace = Handle(THREAD, _head);
2079 _index = 0;
2080 }
2081
2082 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2083 _methods = get_methods(backtrace);
2084 _bcis = get_bcis(backtrace);
2085 _mirrors = get_mirrors(backtrace);
2086 _names = get_names(backtrace);
2087 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2088 assert(_methods->length() == _bcis->length() &&
2089 _methods->length() == _mirrors->length() &&
2090 _mirrors->length() == _names->length(),
2091 "method and source information arrays should match");
2092
2093 // head is the preallocated backtrace
2094 _head = backtrace();
2095 _backtrace = Handle(thread, _head);
2096 _index = 0;
2097 }
2098
2099 void expand(TRAPS) {
2100 objArrayHandle old_head(THREAD, _head);
2101 PauseNoSafepointVerifier pnsv(&_nsv);
2102
2103 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2104 objArrayHandle new_head(THREAD, head);
2105
2106 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2107 typeArrayHandle new_methods(THREAD, methods);
2108
2109 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2110 typeArrayHandle new_bcis(THREAD, bcis);
2111
2112 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2113 objArrayHandle new_mirrors(THREAD, mirrors);
2114
2115 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2116 typeArrayHandle new_names(THREAD, names);
2117
2118 if (!old_head.is_null()) {
2119 old_head->obj_at_put(trace_next_offset, new_head());
2120 }
2121 new_head->obj_at_put(trace_methods_offset, new_methods());
2122 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2123 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2124 new_head->obj_at_put(trace_names_offset, new_names());
2125 new_head->obj_at_put(trace_hidden_offset, NULL);
2126
2127 _head = new_head();
2128 _methods = new_methods();
2129 _bcis = new_bcis();
2130 _mirrors = new_mirrors();
2131 _names = new_names();
2132 _index = 0;
2133 }
2134
2135 oop backtrace() {
2136 return _backtrace();
2137 }
2138
2139 inline void push(Method* method, int bci, TRAPS) {
2140 // Smear the -1 bci to 0 since the array only holds unsigned
2141 // shorts. The later line number lookup would just smear the -1
2142 // to a 0 even if it could be recorded.
2143 if (bci == SynchronizationEntryBCI) bci = 0;
2144
2145 if (_index >= trace_chunk_size) {
2146 methodHandle mhandle(THREAD, method);
2147 expand(CHECK);
2148 method = mhandle();
2149 }
2150
2151 _methods->ushort_at_put(_index, method->orig_method_idnum());
2152 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2153
2154 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2155 // klass owning the symbols alive so their refcounts aren't decremented.
2156 Symbol* name = method->name();
2157 _names->symbol_at_put(_index, name);
2158
2159 // We need to save the mirrors in the backtrace to keep the class
2160 // from being unloaded while we still have this stack trace.
2161 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2162 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2163 _index++;
2164 }
2165
2166 void set_has_hidden_top_frame(TRAPS) {
2167 if (!_has_hidden_top_frame) {
2168 // It would be nice to add java/lang/Boolean::TRUE here
2169 // to indicate that this backtrace has a hidden top frame.
2170 // But this code is used before TRUE is allocated.
2171 // Therefore let's just use an arbitrary legal oop
2172 // available right here. _methods is a short[].
2173 assert(_methods != NULL, "we need a legal oop");
2174 _has_hidden_top_frame = true;
2175 _head->obj_at_put(trace_hidden_offset, _methods);
2176 }
2177 }
2178 };
2179
2180 struct BacktraceElement : public StackObj {
2181 int _method_id;
2182 int _bci;
2183 int _version;
2184 Symbol* _name;
2185 Handle _mirror;
2186 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2187 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2188 };
2189
2190 class BacktraceIterator : public StackObj {
2191 int _index;
2192 objArrayHandle _result;
2193 objArrayHandle _mirrors;
2194 typeArrayHandle _methods;
2195 typeArrayHandle _bcis;
2196 typeArrayHandle _names;
2197
2198 void init(objArrayHandle result, Thread* thread) {
2199 // Get method id, bci, version and mirror from chunk
2200 _result = result;
2201 if (_result.not_null()) {
2202 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2203 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2204 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2205 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2206 _index = 0;
2207 }
2208 }
2209 public:
2210 BacktraceIterator(objArrayHandle result, Thread* thread) {
2211 init(result, thread);
2212 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2213 }
2214
2215 BacktraceElement next(Thread* thread) {
2216 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2217 _methods->ushort_at(_index),
2218 Backtrace::version_at(_bcis->int_at(_index)),
2219 Backtrace::bci_at(_bcis->int_at(_index)),
2220 _names->symbol_at(_index));
2221 _index++;
2222
2223 if (_index >= java_lang_Throwable::trace_chunk_size) {
2224 int next_offset = java_lang_Throwable::trace_next_offset;
2225 // Get next chunk
2226 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2227 init(result, thread);
2228 }
2229 return e;
2230 }
2231
2232 bool repeat() {
2233 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2234 }
2235 };
2236
2237
2238 // Print stack trace element to resource allocated buffer
2239 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2240 int version, int bci, Symbol* name) {
2241 ResourceMark rm;
2242
2243 // Get strings and string lengths
2244 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2245 const char* klass_name = holder->external_name();
2246 int buf_len = (int)strlen(klass_name);
2247
2248 char* method_name = name->as_C_string();
2249 buf_len += (int)strlen(method_name);
2250
2251 char* source_file_name = NULL;
2252 Symbol* source = Backtrace::get_source_file_name(holder, version);
2253 if (source != NULL) {
2254 source_file_name = source->as_C_string();
2255 buf_len += (int)strlen(source_file_name);
2256 }
2257
2258 char *module_name = NULL, *module_version = NULL;
2259 ModuleEntry* module = holder->module();
2260 if (module->is_named()) {
2261 module_name = module->name()->as_C_string();
2262 buf_len += (int)strlen(module_name);
2263 if (module->version() != NULL) {
2264 module_version = module->version()->as_C_string();
2265 buf_len += (int)strlen(module_version);
2266 }
2267 }
2268
2269 // Allocate temporary buffer with extra space for formatting and line number
2270 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2271
2272 // Print stack trace line in buffer
2273 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2274
2275 // Print module information
2276 if (module_name != NULL) {
2277 if (module_version != NULL) {
2278 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2279 } else {
2280 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2281 }
2282 }
2283
2284 // The method can be NULL if the requested class version is gone
2285 Method* method = holder->method_with_orig_idnum(method_id, version);
2286 if (!version_matches(method, version)) {
2287 strcat(buf, "Redefined)");
2288 } else {
2289 int line_number = Backtrace::get_line_number(method, bci);
2290 if (line_number == -2) {
2291 strcat(buf, "Native Method)");
2292 } else {
2293 if (source_file_name != NULL && (line_number != -1)) {
2294 // Sourcename and linenumber
2295 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2296 } else if (source_file_name != NULL) {
2297 // Just sourcename
2298 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2299 } else {
2300 // Neither sourcename nor linenumber
2301 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2302 }
2303 CompiledMethod* nm = method->code();
2304 if (WizardMode && nm != NULL) {
2305 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2306 }
2307 }
2308 }
2309
2310 st->print_cr("%s", buf);
2311 }
2312
2313 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2314 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2315 int method_id = method->orig_method_idnum();
2316 int version = method->constants()->version();
2317 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2318 }
2319
2320 /**
2321 * Print the throwable message and its stack trace plus all causes by walking the
2322 * cause chain. The output looks the same as of Throwable.printStackTrace().
2323 */
2324 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2325 // First, print the message.
2326 print(throwable(), st);
2327 st->cr();
2328
2329 // Now print the stack trace.
2330 Thread* THREAD = Thread::current();
2331 while (throwable.not_null()) {
2332 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2333 if (result.is_null()) {
2334 st->print_raw_cr("\t<<no stack trace available>>");
2335 return;
2336 }
2337 BacktraceIterator iter(result, THREAD);
2338
2339 while (iter.repeat()) {
2340 BacktraceElement bte = iter.next(THREAD);
2341 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2342 }
2343 {
2344 // Call getCause() which doesn't necessarily return the _cause field.
2345 EXCEPTION_MARK;
2346 JavaValue cause(T_OBJECT);
2347 JavaCalls::call_virtual(&cause,
2348 throwable,
2349 throwable->klass(),
2350 vmSymbols::getCause_name(),
2351 vmSymbols::void_throwable_signature(),
2352 THREAD);
2353 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2354 if (HAS_PENDING_EXCEPTION) {
2355 CLEAR_PENDING_EXCEPTION;
2356 throwable = Handle();
2357 } else {
2358 throwable = Handle(THREAD, (oop) cause.get_jobject());
2359 if (throwable.not_null()) {
2360 st->print("Caused by: ");
2361 print(throwable(), st);
2362 st->cr();
2363 }
2364 }
2365 }
2366 }
2367 }
2368
2369 /**
2370 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2371 */
2372 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2373 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2374 JavaValue result(T_VOID);
2375 JavaCalls::call_virtual(&result,
2376 throwable,
2377 SystemDictionary::Throwable_klass(),
2378 vmSymbols::printStackTrace_name(),
2379 vmSymbols::void_method_signature(),
2380 THREAD);
2381 }
2382
2383 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2384 if (!StackTraceInThrowable) return;
2385 ResourceMark rm(THREAD);
2386
2387 // Start out by clearing the backtrace for this object, in case the VM
2388 // runs out of memory while allocating the stack trace
2389 set_backtrace(throwable(), NULL);
2390 // Clear lazily constructed Java level stacktrace if refilling occurs
2391 // This is unnecessary in 1.7+ but harmless
2392 clear_stacktrace(throwable());
2393
2394 int max_depth = MaxJavaStackTraceDepth;
2395 JavaThread* thread = (JavaThread*)THREAD;
2396
2397 BacktraceBuilder bt(CHECK);
2398
2399 // If there is no Java frame just return the method that was being called
2400 // with bci 0
2401 if (!thread->has_last_Java_frame()) {
2402 if (max_depth >= 1 && method() != NULL) {
2403 bt.push(method(), 0, CHECK);
2404 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2405 set_depth(throwable(), 1);
2406 set_backtrace(throwable(), bt.backtrace());
2407 }
2408 return;
2409 }
2410
2411 // Instead of using vframe directly, this version of fill_in_stack_trace
2412 // basically handles everything by hand. This significantly improved the
2413 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2414 // See bug 6333838 for more details.
2415 // The "ASSERT" here is to verify this method generates the exactly same stack
2416 // trace as utilizing vframe.
2417 #ifdef ASSERT
2418 vframeStream st(thread);
2419 #endif
2420 int total_count = 0;
2421 RegisterMap map(thread, false);
2422 int decode_offset = 0;
2423 CompiledMethod* nm = NULL;
2424 bool skip_fillInStackTrace_check = false;
2425 bool skip_throwableInit_check = false;
2426 bool skip_hidden = !ShowHiddenFrames;
2427
2428 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2429 Method* method = NULL;
2430 int bci = 0;
2431
2432 // Compiled java method case.
2433 if (decode_offset != 0) {
2434 DebugInfoReadStream stream(nm, decode_offset);
2435 decode_offset = stream.read_int();
2436 method = (Method*)nm->metadata_at(stream.read_int());
2437 bci = stream.read_bci();
2438 } else {
2439 if (fr.is_first_frame()) break;
2440 address pc = fr.pc();
2441 if (fr.is_interpreted_frame()) {
2442 address bcp = fr.interpreter_frame_bcp();
2443 method = fr.interpreter_frame_method();
2444 bci = method->bci_from(bcp);
2445 fr = fr.sender(&map);
2446 } else {
2447 CodeBlob* cb = fr.cb();
2448 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2449 // but non nmethod
2450 fr = fr.sender(&map);
2451 if (cb == NULL || !cb->is_compiled()) {
2452 continue;
2453 }
2454 nm = cb->as_compiled_method();
2455 if (nm->method()->is_native()) {
2456 method = nm->method();
2457 bci = 0;
2458 } else {
2459 PcDesc* pd = nm->pc_desc_at(pc);
2460 decode_offset = pd->scope_decode_offset();
2461 // if decode_offset is not equal to 0, it will execute the
2462 // "compiled java method case" at the beginning of the loop.
2463 continue;
2464 }
2465 }
2466 }
2467 #ifdef ASSERT
2468 assert(st.method() == method && st.bci() == bci,
2469 "Wrong stack trace");
2470 st.next();
2471 #endif
2472
2473 // the format of the stacktrace will be:
2474 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2475 // - 0 or more <init> methods for the exception class (skipped)
2476 // - rest of the stack
2477
2478 if (!skip_fillInStackTrace_check) {
2479 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2480 throwable->is_a(method->method_holder())) {
2481 continue;
2482 }
2483 else {
2484 skip_fillInStackTrace_check = true; // gone past them all
2485 }
2486 }
2487 if (!skip_throwableInit_check) {
2488 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2489
2490 // skip <init> methods of the exception class and superclasses
2491 // This is simlar to classic VM.
2492 if (method->name() == vmSymbols::object_initializer_name() &&
2493 throwable->is_a(method->method_holder())) {
2494 continue;
2495 } else {
2496 // there are none or we've seen them all - either way stop checking
2497 skip_throwableInit_check = true;
2498 }
2499 }
2500 if (method->is_hidden()) {
2501 if (skip_hidden) {
2502 if (total_count == 0) {
2503 // The top frame will be hidden from the stack trace.
2504 bt.set_has_hidden_top_frame(CHECK);
2505 }
2506 continue;
2507 }
2508 }
2509 bt.push(method, bci, CHECK);
2510 total_count++;
2511 }
2512
2513 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2514
2515 // Put completed stack trace into throwable object
2516 set_backtrace(throwable(), bt.backtrace());
2517 set_depth(throwable(), total_count);
2518 }
2519
2520 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2521 // No-op if stack trace is disabled
2522 if (!StackTraceInThrowable) {
2523 return;
2524 }
2525
2526 // Disable stack traces for some preallocated out of memory errors
2527 if (!Universe::should_fill_in_stack_trace(throwable)) {
2528 return;
2529 }
2530
2531 PRESERVE_EXCEPTION_MARK;
2532
2533 JavaThread* thread = JavaThread::active();
2534 fill_in_stack_trace(throwable, method, thread);
2535 // ignore exceptions thrown during stack trace filling
2536 CLEAR_PENDING_EXCEPTION;
2537 }
2538
2539 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2540 // Allocate stack trace - backtrace is created but not filled in
2541
2542 // No-op if stack trace is disabled
2543 if (!StackTraceInThrowable) return;
2544 BacktraceBuilder bt(CHECK); // creates a backtrace
2545 set_backtrace(throwable(), bt.backtrace());
2546 }
2547
2548
2549 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2550 // Fill in stack trace into preallocated backtrace (no GC)
2551
2552 // No-op if stack trace is disabled
2553 if (!StackTraceInThrowable) return;
2554
2555 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2556
2557 JavaThread* THREAD = JavaThread::current();
2558
2559 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2560 assert(backtrace.not_null(), "backtrace should have been preallocated");
2561
2562 ResourceMark rm(THREAD);
2563 vframeStream st(THREAD);
2564
2565 BacktraceBuilder bt(THREAD, backtrace);
2566
2567 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2568 // methods as preallocated errors aren't created by "java" code.
2569
2570 // fill in as much stack trace as possible
2571 int chunk_count = 0;
2572 for (;!st.at_end(); st.next()) {
2573 bt.push(st.method(), st.bci(), CHECK);
2574 chunk_count++;
2575
2576 // Bail-out for deep stacks
2577 if (chunk_count >= trace_chunk_size) break;
2578 }
2579 set_depth(throwable(), chunk_count);
2580 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2581
2582 // We support the Throwable immutability protocol defined for Java 7.
2583 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2584 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2585 }
2586
2587 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2588 objArrayHandle stack_trace_array_h, TRAPS) {
2589
2590 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2591 THROW(vmSymbols::java_lang_NullPointerException());
2592 }
2593
2594 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2595
2596 if (stack_trace_array_h->length() != depth(throwable())) {
2597 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2598 }
2599
2600 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2601 BacktraceIterator iter(result, THREAD);
2602
2603 int index = 0;
2604 while (iter.repeat()) {
2605 BacktraceElement bte = iter.next(THREAD);
2606
2607 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2608
2609 if (stack_trace_element.is_null()) {
2610 THROW(vmSymbols::java_lang_NullPointerException());
2611 }
2612
2613 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2614 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2615
2616 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2617 method,
2618 bte._version,
2619 bte._bci,
2620 bte._name, CHECK);
2621 }
2622 }
2623
2624 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2625 Thread* THREAD = Thread::current();
2626 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2627 BacktraceIterator iter(result, THREAD);
2628 // No backtrace available.
2629 if (!iter.repeat()) return false;
2630
2631 // If the exception happened in a frame that has been hidden, i.e.,
2632 // omitted from the back trace, we can not compute the message.
2633 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2634 if (hidden != NULL) {
2635 return false;
2636 }
2637
2638 // Get first backtrace element.
2639 BacktraceElement bte = iter.next(THREAD);
2640
2641 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2642 assert(holder != NULL, "first element should be non-null");
2643 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2644
2645 // Original version is no longer available.
2646 if (m == NULL || !version_matches(m, bte._version)) {
2647 return false;
2648 }
2649
2650 *method = m;
2651 *bci = bte._bci;
2652 return true;
2653 }
2654
2655 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2656 // Allocate java.lang.StackTraceElement instance
2657 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2658 assert(k != NULL, "must be loaded in 1.4+");
2659 if (k->should_be_initialized()) {
2660 k->initialize(CHECK_NULL);
2661 }
2662
2663 Handle element = k->allocate_instance_handle(CHECK_NULL);
2664
2665 int version = method->constants()->version();
2666 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2667 return element();
2668 }
2669
2670 void java_lang_StackTraceElement::fill_in(Handle element,
2671 InstanceKlass* holder, const methodHandle& method,
2672 int version, int bci, Symbol* name, TRAPS) {
2673 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2674
2675 ResourceMark rm(THREAD);
2676 HandleMark hm(THREAD);
2677
2678 // Fill in class name
2679 Handle java_class(THREAD, holder->java_mirror());
2680 oop classname = java_lang_Class::name(java_class, CHECK);
2681 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2682 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2683
2684 oop loader = holder->class_loader();
2685 if (loader != NULL) {
2686 oop loader_name = java_lang_ClassLoader::name(loader);
2687 if (loader_name != NULL)
2688 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2689 }
2690
2691 // Fill in method name
2692 oop methodname = StringTable::intern(name, CHECK);
2693 java_lang_StackTraceElement::set_methodName(element(), methodname);
2694
2695 // Fill in module name and version
2696 ModuleEntry* module = holder->module();
2697 if (module->is_named()) {
2698 oop module_name = StringTable::intern(module->name(), CHECK);
2699 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2700 oop module_version;
2701 if (module->version() != NULL) {
2702 module_version = StringTable::intern(module->version(), CHECK);
2703 } else {
2704 module_version = NULL;
2705 }
2706 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2707 }
2708
2709 if (method() == NULL || !version_matches(method(), version)) {
2710 // The method was redefined, accurate line number information isn't available
2711 java_lang_StackTraceElement::set_fileName(element(), NULL);
2712 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2713 } else {
2714 Symbol* source;
2715 oop source_file;
2716 int line_number;
2717 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2718
2719 java_lang_StackTraceElement::set_fileName(element(), source_file);
2720 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2721 }
2722 }
2723
2724 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2725 InstanceKlass* holder,
2726 int version,
2727 const methodHandle& method,
2728 int bci,
2729 Symbol*& source,
2730 oop& source_file,
2731 int& line_number, TRAPS) {
2732 // Fill in source file name and line number.
2733 source = Backtrace::get_source_file_name(holder, version);
2734 source_file = java_lang_Class::source_file(java_class());
2735 if (source != NULL) {
2736 // Class was not redefined. We can trust its cache if set,
2737 // else we have to initialize it.
2738 if (source_file == NULL) {
2739 source_file = StringTable::intern(source, CHECK);
2740 java_lang_Class::set_source_file(java_class(), source_file);
2741 }
2742 } else {
2743 // Class was redefined. Dump the cache if it was set.
2744 if (source_file != NULL) {
2745 source_file = NULL;
2746 java_lang_Class::set_source_file(java_class(), source_file);
2747 }
2748 }
2749 line_number = Backtrace::get_line_number(method(), bci);
2750 }
2751
2752 #if INCLUDE_JVMCI
2753 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2754 Symbol*& filename, int& line_number, TRAPS) {
2755 ResourceMark rm(THREAD);
2756 HandleMark hm(THREAD);
2757
2758 filename = NULL;
2759 line_number = -1;
2760
2761 oop source_file;
2762 int version = method->constants()->version();
2763 InstanceKlass* holder = method->method_holder();
2764 Handle java_class(THREAD, holder->java_mirror());
2765 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2766 }
2767 #endif // INCLUDE_JVMCI
2768
2769 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2770 HandleMark hm(THREAD);
2771 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2772 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2773 // we should expand MemberName::name when Throwable uses StackTrace
2774 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2775 return method;
2776 }
2777
2778 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2779 // set Method* or mid/cpref
2780 HandleMark hm(THREAD);
2781 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2782 InstanceKlass* ik = method->method_holder();
2783 CallInfo info(method(), ik, CHECK);
2784 MethodHandles::init_method_MemberName(mname, info);
2785 // set bci
2786 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2787 // method may be redefined; store the version
2788 int version = method->constants()->version();
2789 assert((jushort)version == version, "version should be short");
2790 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2791 }
2792
2793 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2794 ResourceMark rm(THREAD);
2795 HandleMark hm(THREAD);
2796 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2797 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2798 InstanceKlass* holder = InstanceKlass::cast(clazz);
2799 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2800
2801 short version = stackFrame->short_field(_version_offset);
2802 int bci = stackFrame->int_field(_bci_offset);
2803 Symbol* name = method->name();
2804 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2805 version, bci, name, CHECK);
2806 }
2807
2808 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2809 macro(_memberName_offset, k, "memberName", object_signature, false); \
2810 macro(_bci_offset, k, "bci", int_signature, false)
2811
2812 void java_lang_StackFrameInfo::compute_offsets() {
2813 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2814 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2815 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2816 }
2817
2818 #if INCLUDE_CDS
2819 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2820 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2821 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2822 }
2823 #endif
2824
2825 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2826 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2827 macro(_locals_offset, k, "locals", object_array_signature, false); \
2828 macro(_operands_offset, k, "operands", object_array_signature, false); \
2829 macro(_mode_offset, k, "mode", int_signature, false)
2830
2831 void java_lang_LiveStackFrameInfo::compute_offsets() {
2832 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2833 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2834 }
2835
2836 #if INCLUDE_CDS
2837 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2838 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2839 }
2840 #endif
2841
2842 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2843 macro(override_offset, k, "override", bool_signature, false)
2844
2845 void java_lang_reflect_AccessibleObject::compute_offsets() {
2846 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2847 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2848 }
2849
2850 #if INCLUDE_CDS
2851 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2852 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2853 }
2854 #endif
2855
2856 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2858 return (jboolean) reflect->bool_field(override_offset);
2859 }
2860
2861 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2863 reflect->bool_field_put(override_offset, (int) value);
2864 }
2865
2866 #define METHOD_FIELDS_DO(macro) \
2867 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2868 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2869 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2870 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2871 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2872 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2873 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2874 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2875 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2876 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2877 macro(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2878
2879 void java_lang_reflect_Method::compute_offsets() {
2880 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2881 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2882 }
2883
2884 #if INCLUDE_CDS
2885 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2886 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2887 }
2888 #endif
2889
2890 Handle java_lang_reflect_Method::create(TRAPS) {
2891 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2892 Klass* klass = SystemDictionary::reflect_Method_klass();
2893 // This class is eagerly initialized during VM initialization, since we keep a refence
2894 // to one of the methods
2895 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2896 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2897 }
2898
2899 oop java_lang_reflect_Method::clazz(oop reflect) {
2900 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2901 return reflect->obj_field(clazz_offset);
2902 }
2903
2904 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2905 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2906 reflect->obj_field_put(clazz_offset, value);
2907 }
2908
2909 int java_lang_reflect_Method::slot(oop reflect) {
2910 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2911 return reflect->int_field(slot_offset);
2912 }
2913
2914 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2915 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2916 reflect->int_field_put(slot_offset, value);
2917 }
2918
2919 void java_lang_reflect_Method::set_name(oop method, oop value) {
2920 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2921 method->obj_field_put(name_offset, value);
2922 }
2923
2924 oop java_lang_reflect_Method::return_type(oop method) {
2925 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2926 return method->obj_field(returnType_offset);
2927 }
2928
2929 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2930 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2931 method->obj_field_put(returnType_offset, value);
2932 }
2933
2934 oop java_lang_reflect_Method::parameter_types(oop method) {
2935 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2936 return method->obj_field(parameterTypes_offset);
2937 }
2938
2939 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2941 method->obj_field_put(parameterTypes_offset, value);
2942 }
2943
2944 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2945 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2946 method->obj_field_put(exceptionTypes_offset, value);
2947 }
2948
2949 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2950 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2951 method->int_field_put(modifiers_offset, value);
2952 }
2953
2954 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2956 method->obj_field_put(signature_offset, value);
2957 }
2958
2959 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2960 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2961 method->obj_field_put(annotations_offset, value);
2962 }
2963
2964 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2965 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2966 method->obj_field_put(parameter_annotations_offset, value);
2967 }
2968
2969 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2970 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2971 method->obj_field_put(annotation_default_offset, value);
2972 }
2973
2974 #define CONSTRUCTOR_FIELDS_DO(macro) \
2975 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2976 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2977 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2978 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2979 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2980 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2981 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2982 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2983
2984 void java_lang_reflect_Constructor::compute_offsets() {
2985 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2986 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2987 }
2988
2989 #if INCLUDE_CDS
2990 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2991 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2992 }
2993 #endif
2994
2995 Handle java_lang_reflect_Constructor::create(TRAPS) {
2996 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2997 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2998 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2999 InstanceKlass* ik = InstanceKlass::cast(k);
3000 // Ensure it is initialized
3001 ik->initialize(CHECK_NH);
3002 return ik->allocate_instance_handle(THREAD);
3003 }
3004
3005 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3006 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3007 return reflect->obj_field(clazz_offset);
3008 }
3009
3010 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3012 reflect->obj_field_put(clazz_offset, value);
3013 }
3014
3015 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3016 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3017 return constructor->obj_field(parameterTypes_offset);
3018 }
3019
3020 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3022 constructor->obj_field_put(parameterTypes_offset, value);
3023 }
3024
3025 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3026 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3027 constructor->obj_field_put(exceptionTypes_offset, value);
3028 }
3029
3030 int java_lang_reflect_Constructor::slot(oop reflect) {
3031 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3032 return reflect->int_field(slot_offset);
3033 }
3034
3035 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3036 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3037 reflect->int_field_put(slot_offset, value);
3038 }
3039
3040 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3041 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3042 constructor->int_field_put(modifiers_offset, value);
3043 }
3044
3045 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3046 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3047 constructor->obj_field_put(signature_offset, value);
3048 }
3049
3050 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3051 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3052 constructor->obj_field_put(annotations_offset, value);
3053 }
3054
3055 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3056 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3057 method->obj_field_put(parameter_annotations_offset, value);
3058 }
3059
3060 #define FIELD_FIELDS_DO(macro) \
3061 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3062 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3063 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3064 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3065 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3066 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3067 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3068
3069 void java_lang_reflect_Field::compute_offsets() {
3070 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3071 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3072 }
3073
3074 #if INCLUDE_CDS
3075 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3076 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3077 }
3078 #endif
3079
3080 Handle java_lang_reflect_Field::create(TRAPS) {
3081 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3082 Symbol* name = vmSymbols::java_lang_reflect_Field();
3083 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3084 InstanceKlass* ik = InstanceKlass::cast(k);
3085 // Ensure it is initialized
3086 ik->initialize(CHECK_NH);
3087 return ik->allocate_instance_handle(THREAD);
3088 }
3089
3090 oop java_lang_reflect_Field::clazz(oop reflect) {
3091 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3092 return reflect->obj_field(clazz_offset);
3093 }
3094
3095 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3096 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3097 reflect->obj_field_put(clazz_offset, value);
3098 }
3099
3100 oop java_lang_reflect_Field::name(oop field) {
3101 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3102 return field->obj_field(name_offset);
3103 }
3104
3105 void java_lang_reflect_Field::set_name(oop field, oop value) {
3106 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3107 field->obj_field_put(name_offset, value);
3108 }
3109
3110 oop java_lang_reflect_Field::type(oop field) {
3111 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3112 return field->obj_field(type_offset);
3113 }
3114
3115 void java_lang_reflect_Field::set_type(oop field, oop value) {
3116 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3117 field->obj_field_put(type_offset, value);
3118 }
3119
3120 int java_lang_reflect_Field::slot(oop reflect) {
3121 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3122 return reflect->int_field(slot_offset);
3123 }
3124
3125 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3126 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3127 reflect->int_field_put(slot_offset, value);
3128 }
3129
3130 int java_lang_reflect_Field::modifiers(oop field) {
3131 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3132 return field->int_field(modifiers_offset);
3133 }
3134
3135 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3136 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3137 field->int_field_put(modifiers_offset, value);
3138 }
3139
3140 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3141 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3142 field->obj_field_put(signature_offset, value);
3143 }
3144
3145 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3146 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3147 field->obj_field_put(annotations_offset, value);
3148 }
3149
3150 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3151 // Allocate java.lang.reflect.RecordComponent instance
3152 HandleMark hm(THREAD);
3153 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3154 assert(ik != NULL, "must be loaded");
3155 ik->initialize(CHECK_NULL);
3156
3157 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3158
3159 Handle decl_class(THREAD, holder->java_mirror());
3160 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3161
3162 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3163 oop component_name = StringTable::intern(name, CHECK_NULL);
3164 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3165
3166 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3167 Handle component_type_h =
3168 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3169 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3170
3171 Method* accessor_method = NULL;
3172 {
3173 // Prepend "()" to type to create the full method signature.
3174 ResourceMark rm(THREAD);
3175 int sig_len = type->utf8_length() + 3; // "()" and null char
3176 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3177 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3178 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3179 accessor_method = holder->find_instance_method(name, full_sig);
3180 }
3181
3182 if (accessor_method != NULL) {
3183 methodHandle method(THREAD, accessor_method);
3184 oop m = Reflection::new_method(method, false, CHECK_NULL);
3185 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3186 } else {
3187 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3188 }
3189
3190 int sig_index = component->generic_signature_index();
3191 if (sig_index > 0) {
3192 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3193 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3194 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3195 } else {
3196 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3197 }
3198
3199 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3200 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3201
3202 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3203 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3204
3205 return element();
3206 }
3207
3208 #define CONSTANTPOOL_FIELDS_DO(macro) \
3209 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3210
3211 void reflect_ConstantPool::compute_offsets() {
3212 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3213 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3214 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3215 }
3216
3217 #if INCLUDE_CDS
3218 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3219 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3220 }
3221 #endif
3222
3223 #define PARAMETER_FIELDS_DO(macro) \
3224 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3225 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3226 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3227 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3228
3229 void java_lang_reflect_Parameter::compute_offsets() {
3230 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3231 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3232 }
3233
3234 #if INCLUDE_CDS
3235 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3236 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3237 }
3238 #endif
3239
3240 Handle java_lang_reflect_Parameter::create(TRAPS) {
3241 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3242 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3243 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3244 InstanceKlass* ik = InstanceKlass::cast(k);
3245 // Ensure it is initialized
3246 ik->initialize(CHECK_NH);
3247 return ik->allocate_instance_handle(THREAD);
3248 }
3249
3250 oop java_lang_reflect_Parameter::name(oop param) {
3251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3252 return param->obj_field(name_offset);
3253 }
3254
3255 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3256 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3257 param->obj_field_put(name_offset, value);
3258 }
3259
3260 int java_lang_reflect_Parameter::modifiers(oop param) {
3261 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3262 return param->int_field(modifiers_offset);
3263 }
3264
3265 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3266 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3267 param->int_field_put(modifiers_offset, value);
3268 }
3269
3270 int java_lang_reflect_Parameter::index(oop param) {
3271 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3272 return param->int_field(index_offset);
3273 }
3274
3275 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3276 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3277 param->int_field_put(index_offset, value);
3278 }
3279
3280 oop java_lang_reflect_Parameter::executable(oop param) {
3281 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3282 return param->obj_field(executable_offset);
3283 }
3284
3285 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3286 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3287 param->obj_field_put(executable_offset, value);
3288 }
3289
3290
3291 int java_lang_Module::loader_offset;
3292 int java_lang_Module::name_offset;
3293 int java_lang_Module::_module_entry_offset = -1;
3294
3295 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3296 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3297 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3298 vmSymbols::java_lang_module_init_signature(),
3299 loader, module_name, CHECK_NH);
3300 }
3301
3302 #define MODULE_FIELDS_DO(macro) \
3303 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3304 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3305
3306 void java_lang_Module::compute_offsets() {
3307 InstanceKlass* k = SystemDictionary::Module_klass();
3308 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3309 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3310 }
3311
3312 #if INCLUDE_CDS
3313 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3314 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3315 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3316 }
3317 #endif
3318
3319 oop java_lang_Module::loader(oop module) {
3320 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3321 return module->obj_field(loader_offset);
3322 }
3323
3324 void java_lang_Module::set_loader(oop module, oop value) {
3325 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3326 module->obj_field_put(loader_offset, value);
3327 }
3328
3329 oop java_lang_Module::name(oop module) {
3330 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3331 return module->obj_field(name_offset);
3332 }
3333
3334 void java_lang_Module::set_name(oop module, oop value) {
3335 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3336 module->obj_field_put(name_offset, value);
3337 }
3338
3339 ModuleEntry* java_lang_Module::module_entry(oop module) {
3340 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3341 assert(module != NULL, "module can't be null");
3342 assert(oopDesc::is_oop(module), "module must be oop");
3343
3344 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3345 if (module_entry == NULL) {
3346 // If the inject field containing the ModuleEntry* is null then return the
3347 // class loader's unnamed module.
3348 oop loader = java_lang_Module::loader(module);
3349 Handle h_loader = Handle(Thread::current(), loader);
3350 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3351 return loader_cld->unnamed_module();
3352 }
3353 return module_entry;
3354 }
3355
3356 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3357 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3358 assert(module != NULL, "module can't be null");
3359 assert(oopDesc::is_oop(module), "module must be oop");
3360 module->address_field_put(_module_entry_offset, (address)module_entry);
3361 }
3362
3363 Handle reflect_ConstantPool::create(TRAPS) {
3364 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3365 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3366 // Ensure it is initialized
3367 k->initialize(CHECK_NH);
3368 return k->allocate_instance_handle(THREAD);
3369 }
3370
3371
3372 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3373 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3374 oop mirror = value->pool_holder()->java_mirror();
3375 // Save the mirror to get back the constant pool.
3376 reflect->obj_field_put(_oop_offset, mirror);
3377 }
3378
3379 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3380 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3381
3382 oop mirror = reflect->obj_field(_oop_offset);
3383 Klass* k = java_lang_Class::as_Klass(mirror);
3384 assert(k->is_instance_klass(), "Must be");
3385
3386 // Get the constant pool back from the klass. Since class redefinition
3387 // merges the new constant pool into the old, this is essentially the
3388 // same constant pool as the original. If constant pool merging is
3389 // no longer done in the future, this will have to change to save
3390 // the original.
3391 return InstanceKlass::cast(k)->constants();
3392 }
3393
3394 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3395 macro(_base_offset, k, "base", object_signature, false)
3396
3397 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3398 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3399 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3400 }
3401
3402 #if INCLUDE_CDS
3403 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3404 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3405 }
3406 #endif
3407
3408 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3409 Klass* k = SystemDictionary::box_klass(type);
3410 if (k == NULL) return NULL;
3411 InstanceKlass* ik = InstanceKlass::cast(k);
3412 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3413 return ik->allocate_instance(THREAD);
3414 }
3415
3416
3417 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3418 oop box = initialize_and_allocate(type, CHECK_NULL);
3419 if (box == NULL) return NULL;
3420 switch (type) {
3421 case T_BOOLEAN:
3422 box->bool_field_put(value_offset, value->z);
3423 break;
3424 case T_CHAR:
3425 box->char_field_put(value_offset, value->c);
3426 break;
3427 case T_FLOAT:
3428 box->float_field_put(value_offset, value->f);
3429 break;
3430 case T_DOUBLE:
3431 box->double_field_put(long_value_offset, value->d);
3432 break;
3433 case T_BYTE:
3434 box->byte_field_put(value_offset, value->b);
3435 break;
3436 case T_SHORT:
3437 box->short_field_put(value_offset, value->s);
3438 break;
3439 case T_INT:
3440 box->int_field_put(value_offset, value->i);
3441 break;
3442 case T_LONG:
3443 box->long_field_put(long_value_offset, value->j);
3444 break;
3445 default:
3446 return NULL;
3447 }
3448 return box;
3449 }
3450
3451
3452 BasicType java_lang_boxing_object::basic_type(oop box) {
3453 if (box == NULL) return T_ILLEGAL;
3454 BasicType type = SystemDictionary::box_klass_type(box->klass());
3455 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3456 return T_ILLEGAL;
3457 return type;
3458 }
3459
3460
3461 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3462 BasicType type = SystemDictionary::box_klass_type(box->klass());
3463 switch (type) {
3464 case T_BOOLEAN:
3465 value->z = box->bool_field(value_offset);
3466 break;
3467 case T_CHAR:
3468 value->c = box->char_field(value_offset);
3469 break;
3470 case T_FLOAT:
3471 value->f = box->float_field(value_offset);
3472 break;
3473 case T_DOUBLE:
3474 value->d = box->double_field(long_value_offset);
3475 break;
3476 case T_BYTE:
3477 value->b = box->byte_field(value_offset);
3478 break;
3479 case T_SHORT:
3480 value->s = box->short_field(value_offset);
3481 break;
3482 case T_INT:
3483 value->i = box->int_field(value_offset);
3484 break;
3485 case T_LONG:
3486 value->j = box->long_field(long_value_offset);
3487 break;
3488 default:
3489 return T_ILLEGAL;
3490 } // end switch
3491 return type;
3492 }
3493
3494
3495 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3496 BasicType type = SystemDictionary::box_klass_type(box->klass());
3497 switch (type) {
3498 case T_BOOLEAN:
3499 box->bool_field_put(value_offset, value->z);
3500 break;
3501 case T_CHAR:
3502 box->char_field_put(value_offset, value->c);
3503 break;
3504 case T_FLOAT:
3505 box->float_field_put(value_offset, value->f);
3506 break;
3507 case T_DOUBLE:
3508 box->double_field_put(long_value_offset, value->d);
3509 break;
3510 case T_BYTE:
3511 box->byte_field_put(value_offset, value->b);
3512 break;
3513 case T_SHORT:
3514 box->short_field_put(value_offset, value->s);
3515 break;
3516 case T_INT:
3517 box->int_field_put(value_offset, value->i);
3518 break;
3519 case T_LONG:
3520 box->long_field_put(long_value_offset, value->j);
3521 break;
3522 default:
3523 return T_ILLEGAL;
3524 } // end switch
3525 return type;
3526 }
3527
3528
3529 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3530 switch (type) {
3531 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3532 case T_CHAR: st->print("%d", value->c); break;
3533 case T_BYTE: st->print("%d", value->b); break;
3534 case T_SHORT: st->print("%d", value->s); break;
3535 case T_INT: st->print("%d", value->i); break;
3536 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3537 case T_FLOAT: st->print("%f", value->f); break;
3538 case T_DOUBLE: st->print("%lf", value->d); break;
3539 default: st->print("type %d?", type); break;
3540 }
3541 }
3542
3543 // Support for java_lang_ref_Reference
3544
3545 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3546 assert(obj != NULL, "sanity");
3547 if (offset != java_lang_ref_Reference::referent_offset) {
3548 return false;
3549 }
3550
3551 Klass* k = obj->klass();
3552 if (!k->is_instance_klass()) {
3553 return false;
3554 }
3555
3556 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3557 bool is_reference = ik->reference_type() != REF_NONE;
3558 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3559 return is_reference;
3560 }
3561
3562 // Support for java_lang_ref_SoftReference
3563 //
3564
3565 #define SOFTREFERENCE_FIELDS_DO(macro) \
3566 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3567 macro(static_clock_offset, k, "clock", long_signature, true)
3568
3569 void java_lang_ref_SoftReference::compute_offsets() {
3570 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3571 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3572 }
3573
3574 #if INCLUDE_CDS
3575 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3576 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3577 }
3578 #endif
3579
3580 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3581 return ref->long_field(timestamp_offset);
3582 }
3583
3584 jlong java_lang_ref_SoftReference::clock() {
3585 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3586 oop base = ik->static_field_base_raw();
3587 return base->long_field(static_clock_offset);
3588 }
3589
3590 void java_lang_ref_SoftReference::set_clock(jlong value) {
3591 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3592 oop base = ik->static_field_base_raw();
3593 base->long_field_put(static_clock_offset, value);
3594 }
3595
3596 // Support for java_lang_invoke_DirectMethodHandle
3597
3598 int java_lang_invoke_DirectMethodHandle::_member_offset;
3599
3600 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3601 oop member_name = NULL;
3602 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3603 "a DirectMethodHandle oop is expected");
3604 return dmh->obj_field(member_offset_in_bytes());
3605 }
3606
3607 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3608 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3609
3610 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3611 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3612 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3613 }
3614
3615 #if INCLUDE_CDS
3616 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3617 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3618 }
3619 #endif
3620
3621 // Support for java_lang_invoke_MethodHandle
3622
3623 int java_lang_invoke_MethodHandle::_type_offset;
3624 int java_lang_invoke_MethodHandle::_form_offset;
3625
3626 int java_lang_invoke_MemberName::_clazz_offset;
3627 int java_lang_invoke_MemberName::_name_offset;
3628 int java_lang_invoke_MemberName::_type_offset;
3629 int java_lang_invoke_MemberName::_flags_offset;
3630 int java_lang_invoke_MemberName::_method_offset;
3631 int java_lang_invoke_MemberName::_vmindex_offset;
3632
3633 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3634 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3635
3636 int java_lang_invoke_LambdaForm::_vmentry_offset;
3637
3638 #define METHODHANDLE_FIELDS_DO(macro) \
3639 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3640 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3641
3642 void java_lang_invoke_MethodHandle::compute_offsets() {
3643 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3644 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3645 }
3646
3647 #if INCLUDE_CDS
3648 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3649 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3650 }
3651 #endif
3652
3653 #define MEMBERNAME_FIELDS_DO(macro) \
3654 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3655 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3656 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3657 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3658 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3659
3660 void java_lang_invoke_MemberName::compute_offsets() {
3661 InstanceKlass* k = SystemDictionary::MemberName_klass();
3662 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3663 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3664 }
3665
3666 #if INCLUDE_CDS
3667 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3668 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3669 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3670 }
3671 #endif
3672
3673 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3674 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3675 assert(k != NULL, "jdk mismatch");
3676 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3677 }
3678
3679 #if INCLUDE_CDS
3680 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3681 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3682 }
3683 #endif
3684
3685 #define LAMBDAFORM_FIELDS_DO(macro) \
3686 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3687
3688 void java_lang_invoke_LambdaForm::compute_offsets() {
3689 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3690 assert (k != NULL, "jdk mismatch");
3691 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3692 }
3693
3694 #if INCLUDE_CDS
3695 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3696 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3697 }
3698 #endif
3699
3700 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3701 return obj != NULL && is_subclass(obj->klass());
3702 }
3703
3704
3705 oop java_lang_invoke_MethodHandle::type(oop mh) {
3706 return mh->obj_field(_type_offset);
3707 }
3708
3709 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3710 mh->obj_field_put(_type_offset, mtype);
3711 }
3712
3713 oop java_lang_invoke_MethodHandle::form(oop mh) {
3714 assert(_form_offset != 0, "");
3715 return mh->obj_field(_form_offset);
3716 }
3717
3718 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3719 assert(_form_offset != 0, "");
3720 mh->obj_field_put(_form_offset, lform);
3721 }
3722
3723 /// MemberName accessors
3724
3725 oop java_lang_invoke_MemberName::clazz(oop mname) {
3726 assert(is_instance(mname), "wrong type");
3727 return mname->obj_field(_clazz_offset);
3728 }
3729
3730 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3731 assert(is_instance(mname), "wrong type");
3732 mname->obj_field_put(_clazz_offset, clazz);
3733 }
3734
3735 oop java_lang_invoke_MemberName::name(oop mname) {
3736 assert(is_instance(mname), "wrong type");
3737 return mname->obj_field(_name_offset);
3738 }
3739
3740 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3741 assert(is_instance(mname), "wrong type");
3742 mname->obj_field_put(_name_offset, name);
3743 }
3744
3745 oop java_lang_invoke_MemberName::type(oop mname) {
3746 assert(is_instance(mname), "wrong type");
3747 return mname->obj_field(_type_offset);
3748 }
3749
3750 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3751 assert(is_instance(mname), "wrong type");
3752 mname->obj_field_put(_type_offset, type);
3753 }
3754
3755 int java_lang_invoke_MemberName::flags(oop mname) {
3756 assert(is_instance(mname), "wrong type");
3757 return mname->int_field(_flags_offset);
3758 }
3759
3760 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3761 assert(is_instance(mname), "wrong type");
3762 mname->int_field_put(_flags_offset, flags);
3763 }
3764
3765
3766 // Return vmtarget from ResolvedMethodName method field through indirection
3767 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3768 assert(is_instance(mname), "wrong type");
3769 oop method = mname->obj_field(_method_offset);
3770 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3771 }
3772
3773 bool java_lang_invoke_MemberName::is_method(oop mname) {
3774 assert(is_instance(mname), "must be MemberName");
3775 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3776 }
3777
3778 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3779 assert(is_instance(mname), "wrong type");
3780 mname->obj_field_put(_method_offset, resolved_method);
3781 }
3782
3783 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3784 assert(is_instance(mname), "wrong type");
3785 return (intptr_t) mname->address_field(_vmindex_offset);
3786 }
3787
3788 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3789 assert(is_instance(mname), "wrong type");
3790 mname->address_field_put(_vmindex_offset, (address) index);
3791 }
3792
3793
3794 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3795 assert(is_instance(resolved_method), "wrong type");
3796 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3797 assert(m->is_method(), "must be");
3798 return m;
3799 }
3800
3801 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3802 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3803 assert(is_instance(resolved_method), "wrong type");
3804 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3805 }
3806
3807 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3808 assert(is_instance(resolved_method), "wrong type");
3809 resolved_method->obj_field_put(_vmholder_offset, holder);
3810 }
3811
3812 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3813 const Method* method = m();
3814
3815 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3816 oop resolved_method = ResolvedMethodTable::find_method(method);
3817 if (resolved_method != NULL) {
3818 return resolved_method;
3819 }
3820
3821 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3822 if (!k->is_initialized()) {
3823 k->initialize(CHECK_NULL);
3824 }
3825
3826 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3827
3828 NoSafepointVerifier nsv;
3829
3830 if (method->is_old()) {
3831 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3832 method->get_new_method();
3833 }
3834
3835 InstanceKlass* holder = method->method_holder();
3836
3837 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3838 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3839 // distinct loaders) to ensure the metadata is kept alive.
3840 // This mirror may be different than the one in clazz field.
3841 set_vmholder(new_resolved_method, holder->java_mirror());
3842
3843 // Set flag in class to indicate this InstanceKlass has entries in the table
3844 // to avoid walking table during redefinition if none of the redefined classes
3845 // have any membernames in the table.
3846 holder->set_has_resolved_methods();
3847
3848 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3849 }
3850
3851 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3852 assert(is_instance(lform), "wrong type");
3853 return lform->obj_field(_vmentry_offset);
3854 }
3855
3856
3857 // Support for java_lang_invoke_MethodType
3858
3859 int java_lang_invoke_MethodType::_rtype_offset;
3860 int java_lang_invoke_MethodType::_ptypes_offset;
3861
3862 #define METHODTYPE_FIELDS_DO(macro) \
3863 macro(_rtype_offset, k, "rtype", class_signature, false); \
3864 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3865
3866 void java_lang_invoke_MethodType::compute_offsets() {
3867 InstanceKlass* k = SystemDictionary::MethodType_klass();
3868 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3869 }
3870
3871 #if INCLUDE_CDS
3872 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3873 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3874 }
3875 #endif
3876
3877 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3878 st->print("(");
3879 objArrayOop pts = ptypes(mt);
3880 for (int i = 0, limit = pts->length(); i < limit; i++) {
3881 java_lang_Class::print_signature(pts->obj_at(i), st);
3882 }
3883 st->print(")");
3884 java_lang_Class::print_signature(rtype(mt), st);
3885 }
3886
3887 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3888 ResourceMark rm;
3889 stringStream buffer(128);
3890 print_signature(mt, &buffer);
3891 const char* sigstr = buffer.base();
3892 int siglen = (int) buffer.size();
3893 Symbol *name;
3894 if (!intern_if_not_found) {
3895 name = SymbolTable::probe(sigstr, siglen);
3896 } else {
3897 name = SymbolTable::new_symbol(sigstr, siglen);
3898 }
3899 return name;
3900 }
3901
3902 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3903 if (mt1 == mt2)
3904 return true;
3905 if (rtype(mt1) != rtype(mt2))
3906 return false;
3907 if (ptype_count(mt1) != ptype_count(mt2))
3908 return false;
3909 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3910 if (ptype(mt1, i) != ptype(mt2, i))
3911 return false;
3912 }
3913 return true;
3914 }
3915
3916 oop java_lang_invoke_MethodType::rtype(oop mt) {
3917 assert(is_instance(mt), "must be a MethodType");
3918 return mt->obj_field(_rtype_offset);
3919 }
3920
3921 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3922 assert(is_instance(mt), "must be a MethodType");
3923 return (objArrayOop) mt->obj_field(_ptypes_offset);
3924 }
3925
3926 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3927 return ptypes(mt)->obj_at(idx);
3928 }
3929
3930 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3931 return ptypes(mt)->length();
3932 }
3933
3934 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3935 objArrayOop pts = ptypes(mt);
3936 int count = pts->length();
3937 int slots = 0;
3938 for (int i = 0; i < count; i++) {
3939 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3940 slots += type2size[bt];
3941 }
3942 return slots;
3943 }
3944
3945 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3946 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3947 return type2size[bt];
3948 }
3949
3950
3951 // Support for java_lang_invoke_CallSite
3952
3953 int java_lang_invoke_CallSite::_target_offset;
3954 int java_lang_invoke_CallSite::_context_offset;
3955
3956 #define CALLSITE_FIELDS_DO(macro) \
3957 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3958 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3959
3960 void java_lang_invoke_CallSite::compute_offsets() {
3961 InstanceKlass* k = SystemDictionary::CallSite_klass();
3962 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3963 }
3964
3965 #if INCLUDE_CDS
3966 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3967 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3968 }
3969 #endif
3970
3971 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3972 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3973
3974 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3975 return dep_oop;
3976 }
3977
3978 // Support for java_lang_invoke_ConstantCallSite
3979
3980 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
3981
3982 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
3983 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
3984
3985 void java_lang_invoke_ConstantCallSite::compute_offsets() {
3986 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
3987 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3988 }
3989
3990 #if INCLUDE_CDS
3991 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
3992 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3993 }
3994 #endif
3995
3996 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3997
3998 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3999 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4000
4001 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4002 InstanceKlass* k = SystemDictionary::Context_klass();
4003 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4004 }
4005
4006 #if INCLUDE_CDS
4007 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4008 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4009 }
4010 #endif
4011
4012 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4013 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4014 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4015 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4016 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4017 return dep_ctx;
4018 }
4019
4020 // Support for java_security_AccessControlContext
4021
4022 int java_security_AccessControlContext::_context_offset = 0;
4023 int java_security_AccessControlContext::_privilegedContext_offset = 0;
4024 int java_security_AccessControlContext::_isPrivileged_offset = 0;
4025 int java_security_AccessControlContext::_isAuthorized_offset = -1;
4026
4027 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4028 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4029 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4030 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4031 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4032
4033 void java_security_AccessControlContext::compute_offsets() {
4034 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4035 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4036 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4037 }
4038
4039 #if INCLUDE_CDS
4040 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4041 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4042 }
4043 #endif
4044
4045 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4046 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4047 assert(_isAuthorized_offset != -1, "offsets should have been initialized");
4048 // Ensure klass is initialized
4049 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4050 // Allocate result
4051 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4052 // Fill in values
4053 result->obj_field_put(_context_offset, context());
4054 result->obj_field_put(_privilegedContext_offset, privileged_context());
4055 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4056 // whitelist AccessControlContexts created by the JVM
4057 result->bool_field_put(_isAuthorized_offset, true);
4058 return result;
4059 }
4060
4061
4062 // Support for java_lang_ClassLoader
4063
4064 bool java_lang_ClassLoader::offsets_computed = false;
4065 int java_lang_ClassLoader::_loader_data_offset = -1;
4066 int java_lang_ClassLoader::parallelCapable_offset = -1;
4067 int java_lang_ClassLoader::name_offset = -1;
4068 int java_lang_ClassLoader::nameAndId_offset = -1;
4069 int java_lang_ClassLoader::unnamedModule_offset = -1;
4070
4071 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4072 assert(loader != NULL, "loader must not be NULL");
4073 assert(oopDesc::is_oop(loader), "loader must be oop");
4074 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4075 }
4076
4077 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4078 assert(loader != NULL, "loader must not be NULL");
4079 assert(oopDesc::is_oop(loader), "loader must be oop");
4080 return RawAccess<>::load_at(loader, _loader_data_offset);
4081 }
4082
4083 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4084 assert(loader != NULL, "loader must not be NULL");
4085 assert(oopDesc::is_oop(loader), "loader must be oop");
4086 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4087 }
4088
4089 #define CLASSLOADER_FIELDS_DO(macro) \
4090 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4091 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4092 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4093 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4094 macro(parent_offset, k1, "parent", classloader_signature, false)
4095
4096 void java_lang_ClassLoader::compute_offsets() {
4097 assert(!offsets_computed, "offsets should be initialized only once");
4098 offsets_computed = true;
4099
4100 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4101 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4102
4103 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4104 }
4105
4106 #if INCLUDE_CDS
4107 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4108 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4109 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4110 }
4111 #endif
4112
4113 oop java_lang_ClassLoader::parent(oop loader) {
4114 assert(is_instance(loader), "loader must be oop");
4115 return loader->obj_field(parent_offset);
4116 }
4117
4118 // Returns the name field of this class loader. If the name field has not
4119 // been set, null will be returned.
4120 oop java_lang_ClassLoader::name(oop loader) {
4121 assert(is_instance(loader), "loader must be oop");
4122 return loader->obj_field(name_offset);
4123 }
4124
4125 // Returns the nameAndId field of this class loader. The format is
4126 // as follows:
4127 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4128 // If the defining loader has no name then <qualified-class-name> @<id>
4129 // If built-in loader, then omit '@<id>' as there is only one instance.
4130 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4131 oop java_lang_ClassLoader::nameAndId(oop loader) {
4132 assert(is_instance(loader), "loader must be oop");
4133 return loader->obj_field(nameAndId_offset);
4134 }
4135
4136 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4137 assert(is_instance(loader), "loader must be oop");
4138 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4139 oop acl = loader;
4140 debug_only(jint loop_count = 0);
4141 // This loop taken verbatim from ClassLoader.java:
4142 do {
4143 acl = parent(acl);
4144 if (cl == acl) {
4145 return true;
4146 }
4147 assert(++loop_count > 0, "loop_count overflow");
4148 } while (acl != NULL);
4149 return false;
4150 }
4151
4152 bool java_lang_ClassLoader::is_instance(oop obj) {
4153 return obj != NULL && is_subclass(obj->klass());
4154 }
4155
4156
4157 // For class loader classes, parallelCapable defined
4158 // based on non-null field
4159 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4160 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4161 assert(parallelCapable_offset != -1, "offsets should have been initialized");
4162 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4163 }
4164
4165 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4166 // Fix for 4474172; see evaluation for more details
4167 loader = non_reflection_class_loader(loader);
4168
4169 oop cl = SystemDictionary::java_system_loader();
4170 while(cl != NULL) {
4171 if (cl == loader) return true;
4172 cl = parent(cl);
4173 }
4174 return false;
4175 }
4176
4177 // Return true if this is one of the class loaders associated with
4178 // the generated bytecodes for reflection.
4179 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4180 if (loader != NULL) {
4181 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4182 // This might be null in non-1.4 JDKs
4183 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4184 }
4185 return false;
4186 }
4187
4188 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4189 // See whether this is one of the class loaders associated with
4190 // the generated bytecodes for reflection, and if so, "magically"
4191 // delegate to its parent to prevent class loading from occurring
4192 // in places where applications using reflection didn't expect it.
4193 if (is_reflection_class_loader(loader)) {
4194 return parent(loader);
4195 }
4196 return loader;
4197 }
4198
4199 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4200 assert(is_instance(loader), "loader must be oop");
4201 return loader->obj_field(unnamedModule_offset);
4202 }
4203
4204 // Support for java_lang_System
4205 //
4206 #define SYSTEM_FIELDS_DO(macro) \
4207 macro(static_in_offset, k, "in", input_stream_signature, true); \
4208 macro(static_out_offset, k, "out", print_stream_signature, true); \
4209 macro(static_err_offset, k, "err", print_stream_signature, true); \
4210 macro(static_security_offset, k, "security", security_manager_signature, true)
4211
4212 void java_lang_System::compute_offsets() {
4213 InstanceKlass* k = SystemDictionary::System_klass();
4214 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4215 }
4216
4217 #if INCLUDE_CDS
4218 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4219 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4220 }
4221 #endif
4222
4223 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4224 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4225 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4226
4227 // Support for jdk_internal_misc_UnsafeConstants
4228 //
4229 class UnsafeConstantsFixup : public FieldClosure {
4230 private:
4231 int _address_size;
4232 int _page_size;
4233 bool _big_endian;
4234 bool _use_unaligned_access;
4235 int _data_cache_line_flush_size;
4236 public:
4237 UnsafeConstantsFixup() {
4238 // round up values for all static final fields
4239 _address_size = sizeof(void*);
4240 _page_size = os::vm_page_size();
4241 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4242 _use_unaligned_access = UseUnalignedAccesses;
4243 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4244 }
4245
4246 void do_field(fieldDescriptor* fd) {
4247 oop mirror = fd->field_holder()->java_mirror();
4248 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4249 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4250 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4251 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4252 if (fd->name() == vmSymbols::address_size_name()) {
4253 mirror->int_field_put(fd->offset(), _address_size);
4254 } else if (fd->name() == vmSymbols::page_size_name()) {
4255 mirror->int_field_put(fd->offset(), _page_size);
4256 } else if (fd->name() == vmSymbols::big_endian_name()) {
4257 mirror->bool_field_put(fd->offset(), _big_endian);
4258 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4259 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4260 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4261 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4262 } else {
4263 assert(false, "unexpected UnsafeConstants field");
4264 }
4265 }
4266 };
4267
4268 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4269 UnsafeConstantsFixup fixup;
4270 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4271 }
4272
4273 int java_lang_Class::_klass_offset;
4274 int java_lang_Class::_array_klass_offset;
4275 int java_lang_Class::_oop_size_offset;
4276 int java_lang_Class::_static_oop_field_count_offset;
4277 int java_lang_Class::_class_loader_offset;
4278 int java_lang_Class::_module_offset;
4279 int java_lang_Class::_protection_domain_offset;
4280 int java_lang_Class::_component_mirror_offset;
4281 int java_lang_Class::_init_lock_offset;
4282 int java_lang_Class::_signers_offset;
4283 int java_lang_Class::_name_offset;
4284 int java_lang_Class::_source_file_offset;
4285 int java_lang_Class::_classData_offset;
4286 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4287 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4288 int java_lang_Throwable::backtrace_offset;
4289 int java_lang_Throwable::detailMessage_offset;
4290 int java_lang_Throwable::stackTrace_offset;
4291 int java_lang_Throwable::depth_offset;
4292 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4293 int java_lang_reflect_AccessibleObject::override_offset;
4294 int java_lang_reflect_Method::clazz_offset;
4295 int java_lang_reflect_Method::name_offset;
4296 int java_lang_reflect_Method::returnType_offset;
4297 int java_lang_reflect_Method::parameterTypes_offset;
4298 int java_lang_reflect_Method::exceptionTypes_offset;
4299 int java_lang_reflect_Method::slot_offset;
4300 int java_lang_reflect_Method::modifiers_offset;
4301 int java_lang_reflect_Method::signature_offset;
4302 int java_lang_reflect_Method::annotations_offset;
4303 int java_lang_reflect_Method::parameter_annotations_offset;
4304 int java_lang_reflect_Method::annotation_default_offset;
4305 int java_lang_reflect_Constructor::clazz_offset;
4306 int java_lang_reflect_Constructor::parameterTypes_offset;
4307 int java_lang_reflect_Constructor::exceptionTypes_offset;
4308 int java_lang_reflect_Constructor::slot_offset;
4309 int java_lang_reflect_Constructor::modifiers_offset;
4310 int java_lang_reflect_Constructor::signature_offset;
4311 int java_lang_reflect_Constructor::annotations_offset;
4312 int java_lang_reflect_Constructor::parameter_annotations_offset;
4313 int java_lang_reflect_Field::clazz_offset;
4314 int java_lang_reflect_Field::name_offset;
4315 int java_lang_reflect_Field::type_offset;
4316 int java_lang_reflect_Field::slot_offset;
4317 int java_lang_reflect_Field::modifiers_offset;
4318 int java_lang_reflect_Field::signature_offset;
4319 int java_lang_reflect_Field::annotations_offset;
4320 int java_lang_reflect_Parameter::name_offset;
4321 int java_lang_reflect_Parameter::modifiers_offset;
4322 int java_lang_reflect_Parameter::index_offset;
4323 int java_lang_reflect_Parameter::executable_offset;
4324 int java_lang_boxing_object::value_offset;
4325 int java_lang_boxing_object::long_value_offset;
4326 int java_lang_ref_Reference::referent_offset;
4327 int java_lang_ref_Reference::queue_offset;
4328 int java_lang_ref_Reference::next_offset;
4329 int java_lang_ref_Reference::discovered_offset;
4330 int java_lang_ref_SoftReference::timestamp_offset;
4331 int java_lang_ref_SoftReference::static_clock_offset;
4332 int java_lang_ClassLoader::parent_offset;
4333 int java_lang_System::static_in_offset;
4334 int java_lang_System::static_out_offset;
4335 int java_lang_System::static_err_offset;
4336 int java_lang_System::static_security_offset;
4337 int java_lang_StackTraceElement::methodName_offset;
4338 int java_lang_StackTraceElement::fileName_offset;
4339 int java_lang_StackTraceElement::lineNumber_offset;
4340 int java_lang_StackTraceElement::moduleName_offset;
4341 int java_lang_StackTraceElement::moduleVersion_offset;
4342 int java_lang_StackTraceElement::classLoaderName_offset;
4343 int java_lang_StackTraceElement::declaringClass_offset;
4344 int java_lang_StackTraceElement::declaringClassObject_offset;
4345 int java_lang_StackFrameInfo::_memberName_offset;
4346 int java_lang_StackFrameInfo::_bci_offset;
4347 int java_lang_StackFrameInfo::_version_offset;
4348 int java_lang_LiveStackFrameInfo::_monitors_offset;
4349 int java_lang_LiveStackFrameInfo::_locals_offset;
4350 int java_lang_LiveStackFrameInfo::_operands_offset;
4351 int java_lang_LiveStackFrameInfo::_mode_offset;
4352 int java_lang_AssertionStatusDirectives::classes_offset;
4353 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4354 int java_lang_AssertionStatusDirectives::packages_offset;
4355 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4356 int java_lang_AssertionStatusDirectives::deflt_offset;
4357 int java_nio_Buffer::_limit_offset;
4358 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4359 int reflect_ConstantPool::_oop_offset;
4360 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4361 int java_lang_Integer_IntegerCache::_static_cache_offset;
4362 int java_lang_Long_LongCache::_static_cache_offset;
4363 int java_lang_Character_CharacterCache::_static_cache_offset;
4364 int java_lang_Short_ShortCache::_static_cache_offset;
4365 int java_lang_Byte_ByteCache::_static_cache_offset;
4366 int java_lang_Boolean::_static_TRUE_offset;
4367 int java_lang_Boolean::_static_FALSE_offset;
4368 int java_lang_reflect_RecordComponent::clazz_offset;
4369 int java_lang_reflect_RecordComponent::name_offset;
4370 int java_lang_reflect_RecordComponent::type_offset;
4371 int java_lang_reflect_RecordComponent::accessor_offset;
4372 int java_lang_reflect_RecordComponent::signature_offset;
4373 int java_lang_reflect_RecordComponent::annotations_offset;
4374 int java_lang_reflect_RecordComponent::typeAnnotations_offset;
4375
4376
4377
4378 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4379 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4380 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4381 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4382 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4383 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4384 macro(methodName_offset, k, "methodName", string_signature, false); \
4385 macro(fileName_offset, k, "fileName", string_signature, false); \
4386 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4387
4388 // Support for java_lang_StackTraceElement
4389 void java_lang_StackTraceElement::compute_offsets() {
4390 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4391 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4392 }
4393
4394 #if INCLUDE_CDS
4395 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4396 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4397 }
4398 #endif
4399
4400 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4401 element->obj_field_put(fileName_offset, value);
4402 }
4403
4404 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4405 element->obj_field_put(declaringClass_offset, value);
4406 }
4407
4408 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4409 element->obj_field_put(methodName_offset, value);
4410 }
4411
4412 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4413 element->int_field_put(lineNumber_offset, value);
4414 }
4415
4416 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4417 element->obj_field_put(moduleName_offset, value);
4418 }
4419
4420 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4421 element->obj_field_put(moduleVersion_offset, value);
4422 }
4423
4424 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4425 element->obj_field_put(classLoaderName_offset, value);
4426 }
4427
4428 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4429 element->obj_field_put(declaringClassObject_offset, value);
4430 }
4431
4432 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4433 element->short_field_put(_version_offset, value);
4434 }
4435
4436 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4437 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4438 element->int_field_put(_bci_offset, value);
4439 }
4440
4441 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4442 element->obj_field_put(_monitors_offset, value);
4443 }
4444
4445 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4446 element->obj_field_put(_locals_offset, value);
4447 }
4448
4449 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4450 element->obj_field_put(_operands_offset, value);
4451 }
4452
4453 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4454 element->int_field_put(_mode_offset, value);
4455 }
4456
4457 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4458 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4459 macro(classes_offset, k, "classes", string_array_signature, false); \
4460 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4461 macro(packages_offset, k, "packages", string_array_signature, false); \
4462 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4463 macro(deflt_offset, k, "deflt", bool_signature, false)
4464
4465 void java_lang_AssertionStatusDirectives::compute_offsets() {
4466 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4467 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4468 }
4469
4470 #if INCLUDE_CDS
4471 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4472 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4473 }
4474 #endif
4475
4476 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4477 o->obj_field_put(classes_offset, val);
4478 }
4479
4480 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4481 o->obj_field_put(classEnabled_offset, val);
4482 }
4483
4484 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4485 o->obj_field_put(packages_offset, val);
4486 }
4487
4488 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4489 o->obj_field_put(packageEnabled_offset, val);
4490 }
4491
4492 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4493 o->bool_field_put(deflt_offset, val);
4494 }
4495
4496
4497 // Support for intrinsification of java.nio.Buffer.checkIndex
4498 int java_nio_Buffer::limit_offset() {
4499 return _limit_offset;
4500 }
4501
4502 #define BUFFER_FIELDS_DO(macro) \
4503 macro(_limit_offset, k, "limit", int_signature, false)
4504
4505 void java_nio_Buffer::compute_offsets() {
4506 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4507 assert(k != NULL, "must be loaded in 1.4+");
4508 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4509 }
4510
4511 #if INCLUDE_CDS
4512 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4513 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4514 }
4515 #endif
4516
4517 #define AOS_FIELDS_DO(macro) \
4518 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4519
4520 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4521 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4522 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4523 }
4524
4525 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4526 assert(_owner_offset != 0, "Must be initialized");
4527 return obj->obj_field(_owner_offset);
4528 }
4529
4530 #if INCLUDE_CDS
4531 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4532 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4533 }
4534 #endif
4535
4536 #define INTEGER_CACHE_FIELDS_DO(macro) \
4537 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4538
4539 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4540 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4541 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4542 }
4543
4544 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4545 oop base = ik->static_field_base_raw();
4546 return objArrayOop(base->obj_field(_static_cache_offset));
4547 }
4548
4549 Symbol* java_lang_Integer_IntegerCache::symbol() {
4550 return vmSymbols::java_lang_Integer_IntegerCache();
4551 }
4552
4553 #if INCLUDE_CDS
4554 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4555 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4556 }
4557 #endif
4558 #undef INTEGER_CACHE_FIELDS_DO
4559
4560 jint java_lang_Integer::value(oop obj) {
4561 jvalue v;
4562 java_lang_boxing_object::get_value(obj, &v);
4563 return v.i;
4564 }
4565
4566 #define LONG_CACHE_FIELDS_DO(macro) \
4567 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4568
4569 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4570 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4571 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4572 }
4573
4574 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4575 oop base = ik->static_field_base_raw();
4576 return objArrayOop(base->obj_field(_static_cache_offset));
4577 }
4578
4579 Symbol* java_lang_Long_LongCache::symbol() {
4580 return vmSymbols::java_lang_Long_LongCache();
4581 }
4582
4583 #if INCLUDE_CDS
4584 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4585 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4586 }
4587 #endif
4588 #undef LONG_CACHE_FIELDS_DO
4589
4590 jlong java_lang_Long::value(oop obj) {
4591 jvalue v;
4592 java_lang_boxing_object::get_value(obj, &v);
4593 return v.j;
4594 }
4595
4596 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4597 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4598
4599 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4600 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4601 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4602 }
4603
4604 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4605 oop base = ik->static_field_base_raw();
4606 return objArrayOop(base->obj_field(_static_cache_offset));
4607 }
4608
4609 Symbol* java_lang_Character_CharacterCache::symbol() {
4610 return vmSymbols::java_lang_Character_CharacterCache();
4611 }
4612
4613 #if INCLUDE_CDS
4614 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4615 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4616 }
4617 #endif
4618 #undef CHARACTER_CACHE_FIELDS_DO
4619
4620 jchar java_lang_Character::value(oop obj) {
4621 jvalue v;
4622 java_lang_boxing_object::get_value(obj, &v);
4623 return v.c;
4624 }
4625
4626 #define SHORT_CACHE_FIELDS_DO(macro) \
4627 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4628
4629 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4630 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4631 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4632 }
4633
4634 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4635 oop base = ik->static_field_base_raw();
4636 return objArrayOop(base->obj_field(_static_cache_offset));
4637 }
4638
4639 Symbol* java_lang_Short_ShortCache::symbol() {
4640 return vmSymbols::java_lang_Short_ShortCache();
4641 }
4642
4643 #if INCLUDE_CDS
4644 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4645 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4646 }
4647 #endif
4648 #undef SHORT_CACHE_FIELDS_DO
4649
4650 jshort java_lang_Short::value(oop obj) {
4651 jvalue v;
4652 java_lang_boxing_object::get_value(obj, &v);
4653 return v.s;
4654 }
4655
4656 #define BYTE_CACHE_FIELDS_DO(macro) \
4657 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4658
4659 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4660 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4661 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4662 }
4663
4664 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4665 oop base = ik->static_field_base_raw();
4666 return objArrayOop(base->obj_field(_static_cache_offset));
4667 }
4668
4669 Symbol* java_lang_Byte_ByteCache::symbol() {
4670 return vmSymbols::java_lang_Byte_ByteCache();
4671 }
4672
4673 #if INCLUDE_CDS
4674 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4675 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4676 }
4677 #endif
4678 #undef BYTE_CACHE_FIELDS_DO
4679
4680 jbyte java_lang_Byte::value(oop obj) {
4681 jvalue v;
4682 java_lang_boxing_object::get_value(obj, &v);
4683 return v.b;
4684 }
4685 #define BOOLEAN_FIELDS_DO(macro) \
4686 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4687 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4688
4689
4690 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4691 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4692 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4693 }
4694
4695 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4696 oop base = ik->static_field_base_raw();
4697 return base->obj_field(_static_TRUE_offset);
4698 }
4699
4700 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4701 oop base = ik->static_field_base_raw();
4702 return base->obj_field(_static_FALSE_offset);
4703 }
4704
4705 Symbol* java_lang_Boolean::symbol() {
4706 return vmSymbols::java_lang_Boolean();
4707 }
4708
4709 #if INCLUDE_CDS
4710 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4711 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4712 }
4713 #endif
4714 #undef BOOLEAN_CACHE_FIELDS_DO
4715
4716 jboolean java_lang_Boolean::value(oop obj) {
4717 jvalue v;
4718 java_lang_boxing_object::get_value(obj, &v);
4719 return v.z;
4720 }
4721
4722 static int member_offset(int hardcoded_offset) {
4723 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4724 }
4725
4726 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4727 macro(clazz_offset, k, "clazz", class_signature, false); \
4728 macro(name_offset, k, "name", string_signature, false); \
4729 macro(type_offset, k, "type", class_signature, false); \
4730 macro(accessor_offset, k, "accessor", reflect_method_signature, false); \
4731 macro(signature_offset, k, "signature", string_signature, false); \
4732 macro(annotations_offset, k, "annotations", byte_array_signature, false); \
4733 macro(typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4734
4735 // Support for java_lang_reflect_RecordComponent
4736 void java_lang_reflect_RecordComponent::compute_offsets() {
4737 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4738 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4739 }
4740
4741 #if INCLUDE_CDS
4742 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4743 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4744 }
4745 #endif
4746
4747 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4748 element->obj_field_put(clazz_offset, value);
4749 }
4750
4751 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4752 element->obj_field_put(name_offset, value);
4753 }
4754
4755 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4756 element->obj_field_put(type_offset, value);
4757 }
4758
4759 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4760 element->obj_field_put(accessor_offset, value);
4761 }
4762
4763 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4764 element->obj_field_put(signature_offset, value);
4765 }
4766
4767 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4768 element->obj_field_put(annotations_offset, value);
4769 }
4770
4771 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4772 element->obj_field_put(typeAnnotations_offset, value);
4773 }
4774
4775 // Compute hard-coded offsets
4776 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4777 // are not available to determine the offset_of_static_fields.
4778 void JavaClasses::compute_hard_coded_offsets() {
4779
4780 // java_lang_boxing_object
4781 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4782 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4783
4784 // java_lang_ref_Reference
4785 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4786 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4787 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4788 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4789 }
4790
4791 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4792
4793 // Compute non-hard-coded field offsets of all the classes in this file
4794 void JavaClasses::compute_offsets() {
4795 if (UseSharedSpaces) {
4796 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4797 JvmtiExport::has_early_class_hook_env()),
4798 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4799 // None of the classes used by the rest of this function can be replaced by
4800 // JMVTI ClassFileLoadHook.
4801 // We are safe to use the archived offsets, which have already been restored
4802 // by JavaClasses::serialize_offsets, without computing the offsets again.
4803 return;
4804 }
4805
4806 // We have already called the compute_offsets() of the
4807 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4808 // earlier inside SystemDictionary::resolve_well_known_classes()
4809 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4810 }
4811
4812 #if INCLUDE_CDS
4813 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4814
4815 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4816 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4817 }
4818 #endif
4819
4820 #if INCLUDE_CDS_JAVA_HEAP
4821 bool JavaClasses::is_supported_for_archiving(oop obj) {
4822 Klass* klass = obj->klass();
4823
4824 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4825 klass == SystemDictionary::Module_klass() || // Module::module_entry is malloc'ed
4826 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4827 // regular Java code. The implementation of java.lang.invoke uses generated anonymoys classes
4828 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4829 // So for now we cannot not support these classes for archiving.
4830 //
4831 // These objects typically are not referenced by static fields, but rather by resolved
4832 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4833 klass == SystemDictionary::ResolvedMethodName_klass() ||
4834 klass == SystemDictionary::MemberName_klass() ||
4835 klass == SystemDictionary::Context_klass()) {
4836 return false;
4837 }
4838
4839 return true;
4840 }
4841 #endif
4842
4843 #ifndef PRODUCT
4844
4845 // These functions exist to assert the validity of hard-coded field offsets to guard
4846 // against changes in the class files
4847
4848 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4849 EXCEPTION_MARK;
4850 fieldDescriptor fd;
4851 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4852 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4853 InstanceKlass* ik = InstanceKlass::cast(k);
4854 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4855 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4856 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4857 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4858 return false;
4859 }
4860 if (fd.is_static()) {
4861 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4862 return false;
4863 }
4864 if (fd.offset() == hardcoded_offset ) {
4865 return true;
4866 } else {
4867 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4868 klass_name, field_name, hardcoded_offset, fd.offset());
4869 return false;
4870 }
4871 }
4872
4873 // Check the hard-coded field offsets of all the classes in this file
4874
4875 void JavaClasses::check_offsets() {
4876 bool valid = true;
4877
4878 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4879 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4880
4881 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4882 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4883
4884 // Boxed primitive objects (java_lang_boxing_object)
4885
4886 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4887 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4888 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4889 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4890 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4891 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4892 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4893 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4894
4895 // java.lang.ref.Reference
4896
4897 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4898 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4899 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4900 // Fake field
4901 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4902
4903 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4904 }
4905
4906 #endif // PRODUCT
4907
4908 int InjectedField::compute_offset() {
4909 InstanceKlass* ik = InstanceKlass::cast(klass());
4910 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4911 if (!may_be_java && !fs.access_flags().is_internal()) {
4912 // Only look at injected fields
4913 continue;
4914 }
4915 if (fs.name() == name() && fs.signature() == signature()) {
4916 return fs.offset();
4917 }
4918 }
4919 ResourceMark rm;
4920 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)" : "");
4921 #ifndef PRODUCT
4922 ik->print();
4923 tty->print_cr("all fields:");
4924 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4925 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4926 }
4927 #endif //PRODUCT
4928 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4929 return -1;
4930 }
4931
4932 void javaClasses_init() {
4933 JavaClasses::compute_offsets();
4934 JavaClasses::check_offsets();
4935 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4936 }