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/reflectionUtils.hpp"
66 #include "runtime/safepoint.hpp"
67 #include "runtime/safepointVerifiers.hpp"
68 #include "runtime/thread.inline.hpp"
69 #include "runtime/vframe.inline.hpp"
70 #include "runtime/vm_version.hpp"
71 #include "utilities/align.hpp"
72 #include "utilities/preserveException.hpp"
73 #include "utilities/utf8.hpp"
74 #if INCLUDE_JVMCI
75 #include "jvmci/jvmciJavaClasses.hpp"
76 #endif
77
78 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
79 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
80
81 #if INCLUDE_CDS
82 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
83 f->do_u4((u4*)&_##name##_offset);
84 #endif
85
86 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
87 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
88
89 InjectedField JavaClasses::_injected_fields[] = {
90 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
91 };
92
93 // Register native methods of Object
94 void java_lang_Object::register_natives(TRAPS) {
95 InstanceKlass* obj = SystemDictionary::Object_klass();
96 Method::register_native(obj, vmSymbols::hashCode_name(),
97 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
98 Method::register_native(obj, vmSymbols::wait_name(),
99 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
100 Method::register_native(obj, vmSymbols::notify_name(),
101 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
102 Method::register_native(obj, vmSymbols::notifyAll_name(),
103 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
104 Method::register_native(obj, vmSymbols::clone_name(),
105 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
106 }
107
108 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
109 return _injected_fields[id].compute_offset();
110 }
111
112 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
113 *field_count = 0;
114
115 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
116 if (sid == vmSymbols::NO_SID) {
117 // Only well known classes can inject fields
118 return NULL;
119 }
120
121 int count = 0;
122 int start = -1;
123
124 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
125 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
126 count++; \
127 if (start == -1) start = klass##_##name##_enum; \
128 }
129 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
130 #undef LOOKUP_INJECTED_FIELD
131
132 if (start != -1) {
133 *field_count = count;
134 return _injected_fields + start;
135 }
136 return NULL;
137 }
138
139
140 // Helpful routine for computing field offsets at run time rather than hardcoding them
141 // Finds local fields only, including static fields. Static field offsets are from the
142 // beginning of the mirror.
143 static void compute_offset(int &dest_offset,
144 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
145 bool is_static = false) {
146 fieldDescriptor fd;
147 if (ik == NULL) {
148 ResourceMark rm;
149 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
150 vm_exit_during_initialization("Invalid layout of well-known class");
151 }
152
153 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
154 ResourceMark rm;
155 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
156 name_symbol->as_C_string(), signature_symbol->as_C_string());
157 #ifndef PRODUCT
158 // Prints all fields and offsets
159 Log(class) lt;
160 LogStream ls(lt.error());
161 ik->print_on(&ls);
162 #endif //PRODUCT
163 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
164 }
165 dest_offset = fd.offset();
166 }
167
168 // Overloading to pass name as a string.
169 static void compute_offset(int& dest_offset, InstanceKlass* ik,
170 const char* name_string, Symbol* signature_symbol,
171 bool is_static = false) {
172 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
173 if (name == NULL) {
174 ResourceMark rm;
175 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
176 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
177 }
178 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
179 }
180
181
182 #if INCLUDE_CDS
183 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
184 f->do_u4((u4*)&offset)
185 #endif
186
187 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
188 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
189
190
191 // java_lang_String
192
193 int java_lang_String::_value_offset;
194 int java_lang_String::_hash_offset;
195 int java_lang_String::_hashIsZero_offset;
196 int java_lang_String::_coder_offset;
197
198 bool java_lang_String::_initialized;
199
200 bool java_lang_String::is_instance(oop obj) {
201 return is_instance_inlined(obj);
202 }
203
204 #define STRING_FIELDS_DO(macro) \
205 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
206 macro(_hash_offset, k, "hash", int_signature, false); \
207 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
208 macro(_coder_offset, k, "coder", byte_signature, false);
209
210 void java_lang_String::compute_offsets() {
211 if (_initialized) {
212 return;
213 }
214
215 InstanceKlass* k = SystemDictionary::String_klass();
216 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
217
218 _initialized = true;
219 }
220
221 #if INCLUDE_CDS
222 void java_lang_String::serialize_offsets(SerializeClosure* f) {
223 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
224 f->do_bool(&_initialized);
225 }
226 #endif
227
228 class CompactStringsFixup : public FieldClosure {
229 private:
230 bool _value;
231
232 public:
233 CompactStringsFixup(bool value) : _value(value) {}
234
235 void do_field(fieldDescriptor* fd) {
236 if (fd->name() == vmSymbols::compact_strings_name()) {
237 oop mirror = fd->field_holder()->java_mirror();
238 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
239 assert(mirror != NULL, "String must have mirror already");
240 mirror->bool_field_put(fd->offset(), _value);
241 }
242 }
243 };
244
245 void java_lang_String::set_compact_strings(bool value) {
246 CompactStringsFixup fix(value);
247 SystemDictionary::String_klass()->do_local_static_fields(&fix);
248 }
249
250 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
251 assert(_initialized, "Must be initialized");
252 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
253
254 // Create the String object first, so there's a chance that the String
255 // and the char array it points to end up in the same cache line.
256 oop obj;
257 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
258
259 // Create the char array. The String object must be handlized here
260 // because GC can happen as a result of the allocation attempt.
261 Handle h_obj(THREAD, obj);
262 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
263 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
264
265 // Point the String at the char array
266 obj = h_obj();
267 set_value(obj, buffer);
268 // No need to zero the offset, allocation zero'ed the entire String object
269 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
270 return h_obj;
271 }
272
273 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
274 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
275 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
276 typeArrayOop buffer = value(h_obj());
277 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
278 if (is_latin1) {
279 for (int index = 0; index < length; index++) {
280 buffer->byte_at_put(index, (jbyte)unicode[index]);
281 }
282 } else {
283 for (int index = 0; index < length; index++) {
284 buffer->char_at_put(index, unicode[index]);
285 }
286 }
287
288 #ifdef ASSERT
289 {
290 ResourceMark rm;
291 char* expected = UNICODE::as_utf8(unicode, length);
292 char* actual = as_utf8_string(h_obj());
293 if (strcmp(expected, actual) != 0) {
294 fatal("Unicode conversion failure: %s --> %s", expected, actual);
295 }
296 }
297 #endif
298
299 return h_obj;
300 }
301
302 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
303 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
304 return h_obj();
305 }
306
307 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
308 if (utf8_str == NULL) {
309 return Handle();
310 }
311 bool has_multibyte, is_latin1;
312 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
313 if (!CompactStrings) {
314 has_multibyte = true;
315 is_latin1 = false;
316 }
317
318 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
319 if (length > 0) {
320 if (!has_multibyte) {
321 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
322 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
323 } else if (is_latin1) {
324 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
325 } else {
326 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
327 }
328 }
329
330 #ifdef ASSERT
331 // This check is too strict when the input string is not a valid UTF8.
332 // For example, it may be created with arbitrary content via jni_NewStringUTF.
333 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
334 ResourceMark rm;
335 const char* expected = utf8_str;
336 char* actual = as_utf8_string(h_obj());
337 if (strcmp(expected, actual) != 0) {
338 fatal("String conversion failure: %s --> %s", expected, actual);
339 }
340 }
341 #endif
342
343 return h_obj;
344 }
345
346 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
347 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
348 return h_obj();
349 }
350
351 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
352 const char* utf8_str = (char*)symbol->bytes();
353 int utf8_len = symbol->utf8_length();
354
355 bool has_multibyte, is_latin1;
356 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
357 if (!CompactStrings) {
358 has_multibyte = true;
359 is_latin1 = false;
360 }
361
362 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
363 if (length > 0) {
364 if (!has_multibyte) {
365 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
366 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
367 } else if (is_latin1) {
368 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
369 } else {
370 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
371 }
372 }
373
374 #ifdef ASSERT
375 {
376 ResourceMark rm;
377 const char* expected = symbol->as_utf8();
378 char* actual = as_utf8_string(h_obj());
379 if (strncmp(expected, actual, utf8_len) != 0) {
380 fatal("Symbol conversion failure: %s --> %s", expected, actual);
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 JavaThread* thread = THREAD->as_Java_thread();
412 HandleMark hm(thread);
413 ThreadToNativeFromVM ttn(thread);
414 js = (_to_java_string_fn)(thread->jni_environment(), str);
415 }
416
417 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
418 JNIHandles::destroy_local(js); // destroy local JNIHandle.
419 return native_platform_string;
420 }
421
422 // Converts a Java String to a native C string that can be used for
423 // native OS calls.
424 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
425 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
426 static to_platform_string_fn_t _to_platform_string_fn = NULL;
427
428 if (_to_platform_string_fn == NULL) {
429 void *lib_handle = os::native_java_library();
430 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
431 if (_to_platform_string_fn == NULL) {
432 fatal("GetStringPlatformChars missing");
433 }
434 }
435
436 char *native_platform_string;
437 { JavaThread* thread = THREAD->as_Java_thread();
438 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
439 bool is_copy;
440 HandleMark hm(thread);
441 ThreadToNativeFromVM ttn(thread);
442 JNIEnv *env = thread->jni_environment();
443 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
444 assert(is_copy == JNI_TRUE, "is_copy value changed");
445 JNIHandles::destroy_local(js);
446 }
447 return native_platform_string;
448 }
449
450 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
451 oop obj = java_string();
452 // Typical usage is to convert all '/' to '.' in string.
453 typeArrayOop value = java_lang_String::value(obj);
454 int length = java_lang_String::length(obj, value);
455 bool is_latin1 = java_lang_String::is_latin1(obj);
456
457 // First check if any from_char exist
458 int index; // Declared outside, used later
459 for (index = 0; index < length; index++) {
460 jchar c = !is_latin1 ? value->char_at(index) :
461 ((jchar) value->byte_at(index)) & 0xff;
462 if (c == from_char) {
463 break;
464 }
465 }
466 if (index == length) {
467 // No from_char, so do not copy.
468 return java_string;
469 }
470
471 // Check if result string will be latin1
472 bool to_is_latin1 = false;
473
474 // Replacement char must be latin1
475 if (CompactStrings && UNICODE::is_latin1(to_char)) {
476 if (is_latin1) {
477 // Source string is latin1 as well
478 to_is_latin1 = true;
479 } else if (!UNICODE::is_latin1(from_char)) {
480 // We are replacing an UTF16 char. Scan string to
481 // check if result can be latin1 encoded.
482 to_is_latin1 = true;
483 for (index = 0; index < length; index++) {
484 jchar c = value->char_at(index);
485 if (c != from_char && !UNICODE::is_latin1(c)) {
486 to_is_latin1 = false;
487 break;
488 }
489 }
490 }
491 }
492
493 // Create new UNICODE (or byte) buffer. Must handlize value because GC
494 // may happen during String and char array creation.
495 typeArrayHandle h_value(THREAD, value);
496 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
497 typeArrayOop from_buffer = h_value();
498 typeArrayOop to_buffer = java_lang_String::value(string());
499
500 // Copy contents
501 for (index = 0; index < length; index++) {
502 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
503 ((jchar) from_buffer->byte_at(index)) & 0xff;
504 if (c == from_char) {
505 c = to_char;
506 }
507 if (!to_is_latin1) {
508 to_buffer->char_at_put(index, c);
509 } else {
510 to_buffer->byte_at_put(index, (jbyte) c);
511 }
512 }
513 return string;
514 }
515
516 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
517 typeArrayOop value = java_lang_String::value(java_string);
518 length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
522 if (result != NULL) {
523 if (!is_latin1) {
524 for (int index = 0; index < length; index++) {
525 result[index] = value->char_at(index);
526 }
527 } else {
528 for (int index = 0; index < length; index++) {
529 result[index] = ((jchar) value->byte_at(index)) & 0xff;
530 }
531 }
532 } else {
533 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
534 }
535 return result;
536 }
537
538 unsigned int java_lang_String::hash_code(oop java_string) {
539 // The hash and hashIsZero fields are subject to a benign data race,
540 // making it crucial to ensure that any observable result of the
541 // calculation in this method stays correct under any possible read of
542 // these fields. Necessary restrictions to allow this to be correct
543 // without explicit memory fences or similar concurrency primitives is
544 // that we can ever only write to one of these two fields for a given
545 // String instance, and that the computation is idempotent and derived
546 // from immutable state
547 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
548 if (java_lang_String::hash_is_set(java_string)) {
549 return java_string->int_field(_hash_offset);
550 }
551
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 unsigned int hash = 0;
557 if (length > 0) {
558 if (is_latin1) {
559 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
560 } else {
561 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
562 }
563 }
564
565 if (hash != 0) {
566 java_string->int_field_put(_hash_offset, hash);
567 } else {
568 java_string->bool_field_put(_hashIsZero_offset, true);
569 }
570 return hash;
571 }
572
573 char* java_lang_String::as_quoted_ascii(oop java_string) {
574 typeArrayOop value = java_lang_String::value(java_string);
575 int length = java_lang_String::length(java_string, value);
576 bool is_latin1 = java_lang_String::is_latin1(java_string);
577
578 if (length == 0) return NULL;
579
580 char* result;
581 int result_length;
582 if (!is_latin1) {
583 jchar* base = value->char_at_addr(0);
584 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
585 result = NEW_RESOURCE_ARRAY(char, result_length);
586 UNICODE::as_quoted_ascii(base, length, result, result_length);
587 } else {
588 jbyte* base = value->byte_at_addr(0);
589 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
590 result = NEW_RESOURCE_ARRAY(char, result_length);
591 UNICODE::as_quoted_ascii(base, length, result, result_length);
592 }
593 assert(result_length >= length + 1, "must not be shorter");
594 assert(result_length == (int)strlen(result) + 1, "must match");
595 return result;
596 }
597
598 Symbol* java_lang_String::as_symbol(oop java_string) {
599 typeArrayOop value = java_lang_String::value(java_string);
600 int length = java_lang_String::length(java_string, value);
601 bool is_latin1 = java_lang_String::is_latin1(java_string);
602 if (!is_latin1) {
603 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
604 Symbol* sym = SymbolTable::new_symbol(base, length);
605 return sym;
606 } else {
607 ResourceMark rm;
608 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
609 const char* base = UNICODE::as_utf8(position, length);
610 Symbol* sym = SymbolTable::new_symbol(base, length);
611 return sym;
612 }
613 }
614
615 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
616 typeArrayOop value = java_lang_String::value(java_string);
617 int length = java_lang_String::length(java_string, value);
618 bool is_latin1 = java_lang_String::is_latin1(java_string);
619 if (!is_latin1) {
620 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
621 return SymbolTable::probe_unicode(base, length);
622 } else {
623 ResourceMark rm;
624 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
625 const char* base = UNICODE::as_utf8(position, length);
626 return SymbolTable::probe(base, length);
627 }
628 }
629
630 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
631 assert(value_equals(value, java_lang_String::value(java_string)),
632 "value must be same as java_lang_String::value(java_string)");
633 int length = java_lang_String::length(java_string, value);
634 if (length == 0) {
635 return 0;
636 }
637 if (!java_lang_String::is_latin1(java_string)) {
638 return UNICODE::utf8_length(value->char_at_addr(0), length);
639 } else {
640 return UNICODE::utf8_length(value->byte_at_addr(0), length);
641 }
642 }
643
644 int java_lang_String::utf8_length(oop java_string) {
645 typeArrayOop value = java_lang_String::value(java_string);
646 return utf8_length(java_string, value);
647 }
648
649 char* java_lang_String::as_utf8_string(oop java_string) {
650 int length;
651 return as_utf8_string(java_string, length);
652 }
653
654 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
655 typeArrayOop value = java_lang_String::value(java_string);
656 length = java_lang_String::length(java_string, value);
657 bool is_latin1 = java_lang_String::is_latin1(java_string);
658 if (!is_latin1) {
659 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
660 return UNICODE::as_utf8(position, length);
661 } else {
662 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
663 return UNICODE::as_utf8(position, length);
664 }
665 }
666
667 // Uses a provided buffer if it's sufficiently large, otherwise allocates
668 // a resource array to fit
669 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
670 typeArrayOop value = java_lang_String::value(java_string);
671 int len = java_lang_String::length(java_string, value);
672 bool is_latin1 = java_lang_String::is_latin1(java_string);
673 if (!is_latin1) {
674 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
675 utf8_len = UNICODE::utf8_length(position, len);
676 if (utf8_len >= buflen) {
677 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
678 }
679 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
680 } else {
681 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
682 utf8_len = UNICODE::utf8_length(position, len);
683 if (utf8_len >= buflen) {
684 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
685 }
686 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
687 }
688 }
689
690 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
691 assert(value_equals(value, java_lang_String::value(java_string)),
692 "value must be same as java_lang_String::value(java_string)");
693 int length = java_lang_String::length(java_string, value);
694 bool is_latin1 = java_lang_String::is_latin1(java_string);
695 if (!is_latin1) {
696 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
697 return UNICODE::as_utf8(position, length, buf, buflen);
698 } else {
699 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
700 return UNICODE::as_utf8(position, length, buf, buflen);
701 }
702 }
703
704 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
705 typeArrayOop value = java_lang_String::value(java_string);
706 return as_utf8_string(java_string, value, buf, buflen);
707 }
708
709 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
710 typeArrayOop value = java_lang_String::value(java_string);
711 bool is_latin1 = java_lang_String::is_latin1(java_string);
712 assert(start + len <= java_lang_String::length(java_string), "just checking");
713 if (!is_latin1) {
714 jchar* position = value->char_at_addr(start);
715 return UNICODE::as_utf8(position, len);
716 } else {
717 jbyte* position = value->byte_at_addr(start);
718 return UNICODE::as_utf8(position, len);
719 }
720 }
721
722 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
723 assert(value_equals(value, java_lang_String::value(java_string)),
724 "value must be same as java_lang_String::value(java_string)");
725 assert(start + len <= java_lang_String::length(java_string), "just checking");
726 bool is_latin1 = java_lang_String::is_latin1(java_string);
727 if (!is_latin1) {
728 jchar* position = value->char_at_addr(start);
729 return UNICODE::as_utf8(position, len, buf, buflen);
730 } else {
731 jbyte* position = value->byte_at_addr(start);
732 return UNICODE::as_utf8(position, len, buf, buflen);
733 }
734 }
735
736 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
737 assert(java_string->klass() == SystemDictionary::String_klass(),
738 "must be java_string");
739 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
740 int length = java_lang_String::length(java_string, value);
741 if (length != len) {
742 return false;
743 }
744 bool is_latin1 = java_lang_String::is_latin1(java_string);
745 if (!is_latin1) {
746 for (int i = 0; i < len; i++) {
747 if (value->char_at(i) != chars[i]) {
748 return false;
749 }
750 }
751 } else {
752 for (int i = 0; i < len; i++) {
753 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
754 return false;
755 }
756 }
757 }
758 return true;
759 }
760
761 bool java_lang_String::equals(oop str1, oop str2) {
762 assert(str1->klass() == SystemDictionary::String_klass(),
763 "must be java String");
764 assert(str2->klass() == SystemDictionary::String_klass(),
765 "must be java String");
766 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
767 bool is_latin1 = java_lang_String::is_latin1(str1);
768 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
769 bool is_latin2 = java_lang_String::is_latin1(str2);
770
771 if (is_latin1 != is_latin2) {
772 // Strings with different coders are never equal.
773 return false;
774 }
775 return value_equals(value1, value2);
776 }
777
778 void java_lang_String::print(oop java_string, outputStream* st) {
779 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
780 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
781
782 if (value == NULL) {
783 // This can happen if, e.g., printing a String
784 // object before its initializer has been called
785 st->print("NULL");
786 return;
787 }
788
789 int length = java_lang_String::length(java_string, value);
790 bool is_latin1 = java_lang_String::is_latin1(java_string);
791
792 st->print("\"");
793 for (int index = 0; index < length; index++) {
794 st->print("%c", (!is_latin1) ? value->char_at(index) :
795 ((jchar) value->byte_at(index)) & 0xff );
796 }
797 st->print("\"");
798 }
799
800 // java_lang_Class
801
802 int java_lang_Class::_klass_offset;
803 int java_lang_Class::_array_klass_offset;
804 int java_lang_Class::_oop_size_offset;
805 int java_lang_Class::_static_oop_field_count_offset;
806 int java_lang_Class::_class_loader_offset;
807 int java_lang_Class::_module_offset;
808 int java_lang_Class::_protection_domain_offset;
809 int java_lang_Class::_component_mirror_offset;
810 int java_lang_Class::_init_lock_offset;
811 int java_lang_Class::_signers_offset;
812 int java_lang_Class::_name_offset;
813 int java_lang_Class::_source_file_offset;
814 int java_lang_Class::_classData_offset;
815 int java_lang_Class::_classRedefinedCount_offset;
816
817 bool java_lang_Class::_offsets_computed = false;
818 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
819 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
820
821 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
822 assert(mirror.not_null() && fd->is_static(), "just checking");
823 if (fd->has_initial_value()) {
824 BasicType t = fd->field_type();
825 switch (t) {
826 case T_BYTE:
827 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
828 break;
829 case T_BOOLEAN:
830 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
831 break;
832 case T_CHAR:
833 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
834 break;
835 case T_SHORT:
836 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
837 break;
838 case T_INT:
839 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
840 break;
841 case T_FLOAT:
842 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
843 break;
844 case T_DOUBLE:
845 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
846 break;
847 case T_LONG:
848 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
849 break;
850 case T_OBJECT:
851 {
852 assert(fd->signature() == vmSymbols::string_signature(),
853 "just checking");
854 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
855 // Archive the String field and update the pointer.
856 oop s = mirror()->obj_field(fd->offset());
857 oop archived_s = StringTable::create_archived_string(s, CHECK);
858 mirror()->obj_field_put(fd->offset(), archived_s);
859 } else {
860 oop string = fd->string_initial_value(CHECK);
861 mirror()->obj_field_put(fd->offset(), string);
862 }
863 }
864 break;
865 default:
866 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
867 "Illegal ConstantValue attribute in class file");
868 }
869 }
870 }
871
872
873 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
874 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
875
876 // If the offset was read from the shared archive, it was fixed up already
877 if (!k->is_shared()) {
878 if (k->is_instance_klass()) {
879 // During bootstrap, java.lang.Class wasn't loaded so static field
880 // offsets were computed without the size added it. Go back and
881 // update all the static field offsets to included the size.
882 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
883 if (fs.access_flags().is_static()) {
884 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
885 fs.set_offset(real_offset);
886 }
887 }
888 }
889 }
890
891 if (k->is_shared() && k->has_archived_mirror_index()) {
892 if (HeapShared::open_archive_heap_region_mapped()) {
893 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
894 assert(present, "Missing archived mirror for %s", k->external_name());
895 return;
896 } else {
897 k->clear_java_mirror_handle();
898 k->clear_archived_mirror_index();
899 }
900 }
901 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
902 }
903
904 void java_lang_Class::initialize_mirror_fields(Klass* k,
905 Handle mirror,
906 Handle protection_domain,
907 Handle classData,
908 TRAPS) {
909 // Allocate a simple java object for a lock.
910 // This needs to be a java object because during class initialization
911 // it can be held across a java call.
912 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
913 set_init_lock(mirror(), r);
914
915 // Set protection domain also
916 set_protection_domain(mirror(), protection_domain());
917
918 // Initialize static fields
919 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
920
921 // Set classData
922 set_class_data(mirror(), classData());
923 }
924
925 // Set the java.lang.Module module field in the java_lang_Class mirror
926 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
927 if (module.is_null()) {
928 // During startup, the module may be NULL only if java.base has not been defined yet.
929 // Put the class on the fixup_module_list to patch later when the java.lang.Module
930 // for java.base is known. But note that since we captured the NULL module another
931 // thread may have completed that initialization.
932
933 bool javabase_was_defined = false;
934 {
935 MutexLocker m1(THREAD, Module_lock);
936 // Keep list of classes needing java.base module fixup
937 if (!ModuleEntryTable::javabase_defined()) {
938 assert(k->java_mirror() != NULL, "Class's mirror is null");
939 k->class_loader_data()->inc_keep_alive();
940 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
941 fixup_module_field_list()->push(k);
942 } else {
943 javabase_was_defined = true;
944 }
945 }
946
947 // If java.base was already defined then patch this particular class with java.base.
948 if (javabase_was_defined) {
949 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
950 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
951 "Setting class module field, " JAVA_BASE_NAME " should be defined");
952 Handle javabase_handle(THREAD, javabase_entry->module());
953 set_module(mirror(), javabase_handle());
954 }
955 } else {
956 assert(Universe::is_module_initialized() ||
957 (ModuleEntryTable::javabase_defined() &&
958 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
959 "Incorrect java.lang.Module specification while creating mirror");
960 set_module(mirror(), module());
961 }
962 }
963
964 // Statically allocate fixup lists because they always get created.
965 void java_lang_Class::allocate_fixup_lists() {
966 GrowableArray<Klass*>* mirror_list =
967 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
968 set_fixup_mirror_list(mirror_list);
969
970 GrowableArray<Klass*>* module_list =
971 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
972 set_fixup_module_field_list(module_list);
973 }
974
975 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
976 Handle module, Handle protection_domain,
977 Handle classData, TRAPS) {
978 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
979 assert(k->java_mirror() == NULL, "should only assign mirror once");
980
981 // Use this moment of initialization to cache modifier_flags also,
982 // to support Class.getModifiers(). Instance classes recalculate
983 // the cached flags after the class file is parsed, but before the
984 // class is put into the system dictionary.
985 int computed_modifiers = k->compute_modifier_flags(CHECK);
986 k->set_modifier_flags(computed_modifiers);
987 // Class_klass has to be loaded because it is used to allocate
988 // the mirror.
989 if (SystemDictionary::Class_klass_loaded()) {
990 // Allocate mirror (java.lang.Class instance)
991 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
992 Handle mirror(THREAD, mirror_oop);
993 Handle comp_mirror;
994
995 // Setup indirection from mirror->klass
996 java_lang_Class::set_klass(mirror(), k);
997
998 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
999 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1000
1001 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1002
1003 // It might also have a component mirror. This mirror must already exist.
1004 if (k->is_array_klass()) {
1005 if (k->is_typeArray_klass()) {
1006 BasicType type = TypeArrayKlass::cast(k)->element_type();
1007 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1008 } else {
1009 assert(k->is_objArray_klass(), "Must be");
1010 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1011 assert(element_klass != NULL, "Must have an element klass");
1012 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1013 }
1014 assert(comp_mirror() != NULL, "must have a mirror");
1015
1016 // Two-way link between the array klass and its component mirror:
1017 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1018 set_component_mirror(mirror(), comp_mirror());
1019 // See below for ordering dependencies between field array_klass in component mirror
1020 // and java_mirror in this klass.
1021 } else {
1022 assert(k->is_instance_klass(), "Must be");
1023
1024 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1025 if (HAS_PENDING_EXCEPTION) {
1026 // If any of the fields throws an exception like OOM remove the klass field
1027 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1028 // This mirror looks like a primitive type, which logically it is because it
1029 // it represents no class.
1030 java_lang_Class::set_klass(mirror(), NULL);
1031 return;
1032 }
1033 }
1034
1035 // set the classLoader field in the java_lang_Class instance
1036 assert(class_loader() == k->class_loader(), "should be same");
1037 set_class_loader(mirror(), class_loader());
1038
1039 // Setup indirection from klass->mirror
1040 // after any exceptions can happen during allocations.
1041 k->set_java_mirror(mirror);
1042
1043 // Set the module field in the java_lang_Class instance. This must be done
1044 // after the mirror is set.
1045 set_mirror_module_field(k, mirror, module, THREAD);
1046
1047 if (comp_mirror() != NULL) {
1048 // Set after k->java_mirror() is published, because compiled code running
1049 // concurrently doesn't expect a k to have a null java_mirror.
1050 release_set_array_klass(comp_mirror(), k);
1051 }
1052 } else {
1053 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1054 fixup_mirror_list()->push(k);
1055 }
1056 }
1057
1058 #if INCLUDE_CDS_JAVA_HEAP
1059 // Clears mirror fields. Static final fields with initial values are reloaded
1060 // from constant pool. The object identity hash is in the object header and is
1061 // not affected.
1062 class ResetMirrorField: public FieldClosure {
1063 private:
1064 Handle _m;
1065
1066 public:
1067 ResetMirrorField(Handle mirror) : _m(mirror) {}
1068
1069 void do_field(fieldDescriptor* fd) {
1070 assert(DumpSharedSpaces, "dump time only");
1071 assert(_m.not_null(), "Mirror cannot be NULL");
1072
1073 if (fd->is_static() && fd->has_initial_value()) {
1074 initialize_static_field(fd, _m, Thread::current());
1075 return;
1076 }
1077
1078 BasicType ft = fd->field_type();
1079 switch (ft) {
1080 case T_BYTE:
1081 _m()->byte_field_put(fd->offset(), 0);
1082 break;
1083 case T_CHAR:
1084 _m()->char_field_put(fd->offset(), 0);
1085 break;
1086 case T_DOUBLE:
1087 _m()->double_field_put(fd->offset(), 0);
1088 break;
1089 case T_FLOAT:
1090 _m()->float_field_put(fd->offset(), 0);
1091 break;
1092 case T_INT:
1093 _m()->int_field_put(fd->offset(), 0);
1094 break;
1095 case T_LONG:
1096 _m()->long_field_put(fd->offset(), 0);
1097 break;
1098 case T_SHORT:
1099 _m()->short_field_put(fd->offset(), 0);
1100 break;
1101 case T_BOOLEAN:
1102 _m()->bool_field_put(fd->offset(), false);
1103 break;
1104 case T_ARRAY:
1105 case T_OBJECT: {
1106 // It might be useful to cache the String field, but
1107 // for now just clear out any reference field
1108 oop o = _m()->obj_field(fd->offset());
1109 _m()->obj_field_put(fd->offset(), NULL);
1110 break;
1111 }
1112 default:
1113 ShouldNotReachHere();
1114 break;
1115 }
1116 }
1117 };
1118
1119 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1120 assert(HeapShared::is_heap_object_archiving_allowed(),
1121 "HeapShared::is_heap_object_archiving_allowed() must be true");
1122
1123 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1124 BasicType bt = (BasicType)t;
1125 oop m = Universe::_mirrors[t].resolve();
1126 if (m != NULL) {
1127 // Update the field at _array_klass_offset to point to the relocated array klass.
1128 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1129 assert(archived_m != NULL, "sanity");
1130 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1131 assert(ak != NULL || t == T_VOID, "should not be NULL");
1132 if (ak != NULL) {
1133 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1134 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1135 }
1136
1137 // Clear the fields. Just to be safe
1138 Klass *k = m->klass();
1139 Handle archived_mirror_h(THREAD, archived_m);
1140 ResetMirrorField reset(archived_mirror_h);
1141 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1142
1143 log_trace(cds, heap, mirror)(
1144 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1145 type2name(bt), p2i(m), p2i(archived_m));
1146
1147 Universe::replace_mirror(bt, archived_m);
1148 }
1149 }
1150 }
1151 //
1152 // After the mirror object is successfully archived, the archived
1153 // klass is set with _has_archived_raw_mirror flag.
1154 //
1155 // The _has_archived_raw_mirror flag is cleared at runtime when the
1156 // archived mirror is restored. If archived java heap data cannot
1157 // be used at runtime, new mirror object is created for the shared
1158 // class. The _has_archived_raw_mirror is cleared also during the process.
1159 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1160 assert(HeapShared::is_heap_object_archiving_allowed(),
1161 "HeapShared::is_heap_object_archiving_allowed() must be true");
1162
1163 // Mirror is already archived
1164 if (k->has_archived_mirror_index()) {
1165 assert(k->archived_java_mirror() != NULL, "no archived mirror");
1166 return k->archived_java_mirror();
1167 }
1168
1169 // No mirror
1170 oop mirror = k->java_mirror();
1171 if (mirror == NULL) {
1172 return NULL;
1173 }
1174
1175 if (k->is_instance_klass()) {
1176 InstanceKlass *ik = InstanceKlass::cast(k);
1177 assert(ik->signers() == NULL, "class with signer should have been excluded");
1178
1179 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1180 ik->is_shared_app_class())) {
1181 // Archiving mirror for classes from non-builtin loaders is not
1182 // supported.
1183 return NULL;
1184 }
1185 }
1186
1187 // Now start archiving the mirror object
1188 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1189 if (archived_mirror == NULL) {
1190 return NULL;
1191 }
1192
1193 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1194 if (archived_mirror == NULL) {
1195 return NULL;
1196 }
1197
1198 k->set_archived_java_mirror(archived_mirror);
1199
1200 ResourceMark rm;
1201 log_trace(cds, heap, mirror)(
1202 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1203 k->external_name(), p2i(mirror), p2i(archived_mirror));
1204
1205 return archived_mirror;
1206 }
1207
1208 // The process is based on create_mirror().
1209 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1210 oop archived_mirror,
1211 Thread *THREAD) {
1212 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1213 // to archived metadata and objects below.
1214 Klass *c = archived_mirror->klass();
1215 Handle archived_mirror_h(THREAD, archived_mirror);
1216 ResetMirrorField reset(archived_mirror_h);
1217 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1218
1219 if (k->is_array_klass()) {
1220 oop archived_comp_mirror;
1221 if (k->is_typeArray_klass()) {
1222 // The primitive type mirrors are already archived. Get the archived mirror.
1223 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1224 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1225 assert(archived_comp_mirror != NULL, "Must be");
1226 } else {
1227 assert(k->is_objArray_klass(), "Must be");
1228 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1229 assert(element_klass != NULL, "Must have an element klass");
1230 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1231 if (archived_comp_mirror == NULL) {
1232 return NULL;
1233 }
1234 }
1235 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1236 } else {
1237 assert(k->is_instance_klass(), "Must be");
1238
1239 // Reset local static fields in the mirror
1240 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1241
1242 java_lang_Class:set_init_lock(archived_mirror, NULL);
1243
1244 set_protection_domain(archived_mirror, NULL);
1245 }
1246
1247 // clear class loader and mirror_module_field
1248 set_class_loader(archived_mirror, NULL);
1249 set_module(archived_mirror, NULL);
1250
1251 // The archived mirror's field at _klass_offset is still pointing to the original
1252 // klass. Updated the field in the archived mirror to point to the relocated
1253 // klass in the archive.
1254 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1255 log_debug(cds, heap, mirror)(
1256 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1257 p2i(as_Klass(mirror)), p2i(reloc_k));
1258 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1259
1260 // The field at _array_klass_offset is pointing to the original one dimension
1261 // higher array klass if exists. Relocate the pointer.
1262 Klass *arr = array_klass_acquire(mirror);
1263 if (arr != NULL) {
1264 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1265 log_debug(cds, heap, mirror)(
1266 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1267 p2i(arr), p2i(reloc_arr));
1268 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1269 }
1270 return archived_mirror;
1271 }
1272
1273 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1274 if (MetaspaceShared::relocation_delta() != 0) {
1275 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1276
1277 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1278 if (ak != NULL) {
1279 archived_mirror->metadata_field_put(_array_klass_offset,
1280 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1281 }
1282 }
1283 }
1284
1285 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1286 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1287
1288 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1289 archived_mirror->metadata_field_put(_klass_offset,
1290 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1291
1292 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1293 if (ak != NULL) {
1294 archived_mirror->metadata_field_put(_array_klass_offset,
1295 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1296 }
1297 }
1298
1299
1300 // Returns true if the mirror is updated, false if no archived mirror
1301 // data is present. After the archived mirror object is restored, the
1302 // shared klass' _has_raw_archived_mirror flag is cleared.
1303 bool java_lang_Class::restore_archived_mirror(Klass *k,
1304 Handle class_loader, Handle module,
1305 Handle protection_domain, TRAPS) {
1306 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1307 // see more details in SystemDictionary::resolve_well_known_classes().
1308 if (!SystemDictionary::Class_klass_loaded()) {
1309 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1310 fixup_mirror_list()->push(k);
1311 return true;
1312 }
1313
1314 oop m = k->archived_java_mirror();
1315 assert(m != NULL, "must have stored non-null archived mirror");
1316
1317 // Sanity: clear it now to prevent re-initialization if any of the following fails
1318 k->clear_archived_mirror_index();
1319
1320 // mirror is archived, restore
1321 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1322 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1323 assert(as_Klass(m) == k, "must be");
1324 Handle mirror(THREAD, m);
1325
1326 if (!k->is_array_klass()) {
1327 // - local static final fields with initial values were initialized at dump time
1328
1329 // create the init_lock
1330 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1331 set_init_lock(mirror(), r);
1332
1333 if (protection_domain.not_null()) {
1334 set_protection_domain(mirror(), protection_domain());
1335 }
1336 }
1337
1338 assert(class_loader() == k->class_loader(), "should be same");
1339 if (class_loader.not_null()) {
1340 set_class_loader(mirror(), class_loader());
1341 }
1342
1343 k->set_java_mirror(mirror);
1344
1345 set_mirror_module_field(k, mirror, module, THREAD);
1346
1347 if (log_is_enabled(Trace, cds, heap, mirror)) {
1348 ResourceMark rm(THREAD);
1349 log_trace(cds, heap, mirror)(
1350 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1351 }
1352
1353 return true;
1354 }
1355 #endif // INCLUDE_CDS_JAVA_HEAP
1356
1357 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1358 assert(_module_offset != 0, "must have been computed already");
1359 java_lang_Class::set_module(k->java_mirror(), module());
1360 }
1361
1362 int java_lang_Class::oop_size(oop java_class) {
1363 assert(_oop_size_offset != 0, "must be set");
1364 int size = java_class->int_field(_oop_size_offset);
1365 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1366 return size;
1367 }
1368
1369
1370 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1371 assert(_oop_size_offset != 0, "must be set");
1372 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1373 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1374 }
1375
1376 int java_lang_Class::static_oop_field_count(oop java_class) {
1377 assert(_static_oop_field_count_offset != 0, "must be set");
1378 return java_class->int_field(_static_oop_field_count_offset);
1379 }
1380
1381 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1382 assert(_static_oop_field_count_offset != 0, "must be set");
1383 return java_class->int_field_raw(_static_oop_field_count_offset);
1384 }
1385
1386 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1387 assert(_static_oop_field_count_offset != 0, "must be set");
1388 java_class->int_field_put(_static_oop_field_count_offset, size);
1389 }
1390
1391 oop java_lang_Class::protection_domain(oop java_class) {
1392 assert(_protection_domain_offset != 0, "must be set");
1393 return java_class->obj_field(_protection_domain_offset);
1394 }
1395 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1396 assert(_protection_domain_offset != 0, "must be set");
1397 java_class->obj_field_put(_protection_domain_offset, pd);
1398 }
1399
1400 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1401 assert(_component_mirror_offset != 0, "must be set");
1402 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1403 }
1404 oop java_lang_Class::component_mirror(oop java_class) {
1405 assert(_component_mirror_offset != 0, "must be set");
1406 return java_class->obj_field(_component_mirror_offset);
1407 }
1408
1409 oop java_lang_Class::init_lock(oop java_class) {
1410 assert(_init_lock_offset != 0, "must be set");
1411 return java_class->obj_field(_init_lock_offset);
1412 }
1413 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1414 assert(_init_lock_offset != 0, "must be set");
1415 java_class->obj_field_put(_init_lock_offset, init_lock);
1416 }
1417
1418 objArrayOop java_lang_Class::signers(oop java_class) {
1419 assert(_signers_offset != 0, "must be set");
1420 return (objArrayOop)java_class->obj_field(_signers_offset);
1421 }
1422 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1423 assert(_signers_offset != 0, "must be set");
1424 java_class->obj_field_put(_signers_offset, (oop)signers);
1425 }
1426
1427 oop java_lang_Class::class_data(oop java_class) {
1428 assert(_classData_offset != 0, "must be set");
1429 return java_class->obj_field(_classData_offset);
1430 }
1431 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1432 assert(_classData_offset != 0, "must be set");
1433 java_class->obj_field_put(_classData_offset, class_data);
1434 }
1435
1436 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1437 assert(_class_loader_offset != 0, "offsets should have been initialized");
1438 java_class->obj_field_put(_class_loader_offset, loader);
1439 }
1440
1441 oop java_lang_Class::class_loader(oop java_class) {
1442 assert(_class_loader_offset != 0, "must be set");
1443 return java_class->obj_field(_class_loader_offset);
1444 }
1445
1446 oop java_lang_Class::module(oop java_class) {
1447 assert(_module_offset != 0, "must be set");
1448 return java_class->obj_field(_module_offset);
1449 }
1450
1451 void java_lang_Class::set_module(oop java_class, oop module) {
1452 assert(_module_offset != 0, "must be set");
1453 java_class->obj_field_put(_module_offset, module);
1454 }
1455
1456 oop java_lang_Class::name(Handle java_class, TRAPS) {
1457 assert(_name_offset != 0, "must be set");
1458 oop o = java_class->obj_field(_name_offset);
1459 if (o == NULL) {
1460 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1461 java_class->obj_field_put(_name_offset, o);
1462 }
1463 return o;
1464 }
1465
1466 oop java_lang_Class::source_file(oop java_class) {
1467 assert(_source_file_offset != 0, "must be set");
1468 return java_class->obj_field(_source_file_offset);
1469 }
1470
1471 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1472 assert(_source_file_offset != 0, "must be set");
1473 java_class->obj_field_put(_source_file_offset, source_file);
1474 }
1475
1476 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1477 // This should be improved by adding a field at the Java level or by
1478 // introducing a new VM klass (see comment in ClassFileParser)
1479 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1480 if (type != T_VOID) {
1481 Klass* aklass = Universe::typeArrayKlassObj(type);
1482 assert(aklass != NULL, "correct bootstrap");
1483 release_set_array_klass(java_class, aklass);
1484 }
1485 #ifdef ASSERT
1486 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1487 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1488 #endif
1489 return java_class;
1490 }
1491
1492
1493 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1494 //%note memory_2
1495 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1496 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1497 assert(k == NULL || k->is_klass(), "type check");
1498 return k;
1499 }
1500
1501
1502 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1503 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1504 java_class->metadata_field_put(_klass_offset, klass);
1505 }
1506
1507
1508 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1509 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1510 Symbol* name = NULL;
1511 bool is_instance = false;
1512 if (is_primitive(java_class)) {
1513 name = vmSymbols::type_signature(primitive_type(java_class));
1514 } else {
1515 Klass* k = as_Klass(java_class);
1516 is_instance = k->is_instance_klass();
1517 name = k->name();
1518 }
1519 if (name == NULL) {
1520 st->print("<null>");
1521 return;
1522 }
1523 if (is_instance) st->print("L");
1524 st->write((char*) name->base(), (int) name->utf8_length());
1525 if (is_instance) st->print(";");
1526 }
1527
1528 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1529 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1530 Symbol* name;
1531 if (is_primitive(java_class)) {
1532 name = vmSymbols::type_signature(primitive_type(java_class));
1533 // Because this can create a new symbol, the caller has to decrement
1534 // the refcount, so make adjustment here and below for symbols returned
1535 // that are not created or incremented due to a successful lookup.
1536 name->increment_refcount();
1537 } else {
1538 Klass* k = as_Klass(java_class);
1539 if (!k->is_instance_klass()) {
1540 name = k->name();
1541 name->increment_refcount();
1542 } else {
1543 ResourceMark rm;
1544 const char* sigstr = k->signature_name();
1545 int siglen = (int) strlen(sigstr);
1546 if (!intern_if_not_found) {
1547 name = SymbolTable::probe(sigstr, siglen);
1548 } else {
1549 name = SymbolTable::new_symbol(sigstr, siglen);
1550 }
1551 }
1552 }
1553 return name;
1554 }
1555
1556 // Returns the Java name for this Java mirror (Resource allocated)
1557 // See Klass::external_name().
1558 // For primitive type Java mirrors, its type name is returned.
1559 const char* java_lang_Class::as_external_name(oop java_class) {
1560 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1561 const char* name = NULL;
1562 if (is_primitive(java_class)) {
1563 name = type2name(primitive_type(java_class));
1564 } else {
1565 name = as_Klass(java_class)->external_name();
1566 }
1567 if (name == NULL) {
1568 name = "<null>";
1569 }
1570 return name;
1571 }
1572
1573 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1574 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1575 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1576 return k;
1577 }
1578
1579
1580 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1581 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1582 java_class->release_metadata_field_put(_array_klass_offset, klass);
1583 }
1584
1585
1586 BasicType java_lang_Class::primitive_type(oop java_class) {
1587 assert(java_lang_Class::is_primitive(java_class), "just checking");
1588 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1589 BasicType type = T_VOID;
1590 if (ak != NULL) {
1591 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1592 type = ArrayKlass::cast(ak)->element_type();
1593 } else {
1594 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1595 }
1596 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1597 return type;
1598 }
1599
1600 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1601 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1602 if (is_primitive(java_class)) {
1603 if (reference_klass != NULL)
1604 (*reference_klass) = NULL;
1605 return primitive_type(java_class);
1606 } else {
1607 if (reference_klass != NULL)
1608 (*reference_klass) = as_Klass(java_class);
1609 return T_OBJECT;
1610 }
1611 }
1612
1613
1614 oop java_lang_Class::primitive_mirror(BasicType t) {
1615 oop mirror = Universe::java_mirror(t);
1616 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1617 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1618 return mirror;
1619 }
1620
1621 #define CLASS_FIELDS_DO(macro) \
1622 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1623 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1624 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1625 macro(_module_offset, k, "module", module_signature, false); \
1626 macro(_name_offset, k, "name", string_signature, false); \
1627 macro(_classData_offset, k, "classData", object_signature, false);
1628
1629 void java_lang_Class::compute_offsets() {
1630 if (_offsets_computed) {
1631 return;
1632 }
1633
1634 _offsets_computed = true;
1635
1636 InstanceKlass* k = SystemDictionary::Class_klass();
1637 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1638
1639 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1640 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1641 // GC treats them the same.
1642 _init_lock_offset = _component_mirror_offset;
1643
1644 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1645 }
1646
1647 #if INCLUDE_CDS
1648 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1649 f->do_bool(&_offsets_computed);
1650 f->do_u4((u4*)&_init_lock_offset);
1651
1652 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1653
1654 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1655 }
1656 #endif
1657
1658 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1659 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1660 return the_class_mirror->int_field(_classRedefinedCount_offset);
1661 }
1662
1663 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1664 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1665 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1666 }
1667
1668
1669 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1670 // platform thread structure, and a eetop offset which was used for thread
1671 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1672 // merged, so in the HotSpot VM we just use the eetop field for the thread
1673 // instead of the privateInfo_offset.
1674 //
1675 // Note: The stackSize field is only present starting in 1.4.
1676
1677 int java_lang_Thread::_name_offset;
1678 int java_lang_Thread::_group_offset;
1679 int java_lang_Thread::_contextClassLoader_offset;
1680 int java_lang_Thread::_inheritedAccessControlContext_offset;
1681 int java_lang_Thread::_priority_offset;
1682 int java_lang_Thread::_eetop_offset;
1683 int java_lang_Thread::_interrupted_offset;
1684 int java_lang_Thread::_daemon_offset;
1685 int java_lang_Thread::_stillborn_offset;
1686 int java_lang_Thread::_stackSize_offset;
1687 int java_lang_Thread::_tid_offset;
1688 int java_lang_Thread::_thread_status_offset;
1689 int java_lang_Thread::_park_blocker_offset;
1690
1691 #define THREAD_FIELDS_DO(macro) \
1692 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1693 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1694 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1695 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1696 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1697 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1698 macro(_eetop_offset, k, "eetop", long_signature, false); \
1699 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1700 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1701 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1702 macro(_tid_offset, k, "tid", long_signature, false); \
1703 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1704 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1705
1706 void java_lang_Thread::compute_offsets() {
1707 assert(_group_offset == 0, "offsets should be initialized only once");
1708
1709 InstanceKlass* k = SystemDictionary::Thread_klass();
1710 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1711 }
1712
1713 #if INCLUDE_CDS
1714 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1715 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1716 }
1717 #endif
1718
1719 JavaThread* java_lang_Thread::thread(oop java_thread) {
1720 return (JavaThread*)java_thread->address_field(_eetop_offset);
1721 }
1722
1723
1724 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1725 java_thread->address_field_put(_eetop_offset, (address)thread);
1726 }
1727
1728 bool java_lang_Thread::interrupted(oop java_thread) {
1729 // Make sure the caller can safely access oops.
1730 assert(Thread::current()->is_VM_thread() ||
1731 (JavaThread::current()->thread_state() != _thread_blocked &&
1732 JavaThread::current()->thread_state() != _thread_in_native),
1733 "Unsafe access to oop");
1734 return java_thread->bool_field_volatile(_interrupted_offset);
1735 }
1736
1737 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1738 // Make sure the caller can safely access oops.
1739 assert(Thread::current()->is_VM_thread() ||
1740 (JavaThread::current()->thread_state() != _thread_blocked &&
1741 JavaThread::current()->thread_state() != _thread_in_native),
1742 "Unsafe access to oop");
1743 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1744 }
1745
1746
1747 oop java_lang_Thread::name(oop java_thread) {
1748 return java_thread->obj_field(_name_offset);
1749 }
1750
1751
1752 void java_lang_Thread::set_name(oop java_thread, oop name) {
1753 java_thread->obj_field_put(_name_offset, name);
1754 }
1755
1756
1757 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1758 return (ThreadPriority)java_thread->int_field(_priority_offset);
1759 }
1760
1761
1762 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1763 java_thread->int_field_put(_priority_offset, priority);
1764 }
1765
1766
1767 oop java_lang_Thread::threadGroup(oop java_thread) {
1768 return java_thread->obj_field(_group_offset);
1769 }
1770
1771
1772 bool java_lang_Thread::is_stillborn(oop java_thread) {
1773 return java_thread->bool_field(_stillborn_offset) != 0;
1774 }
1775
1776
1777 // We never have reason to turn the stillborn bit off
1778 void java_lang_Thread::set_stillborn(oop java_thread) {
1779 java_thread->bool_field_put(_stillborn_offset, true);
1780 }
1781
1782
1783 bool java_lang_Thread::is_alive(oop java_thread) {
1784 JavaThread* thr = java_lang_Thread::thread(java_thread);
1785 return (thr != NULL);
1786 }
1787
1788
1789 bool java_lang_Thread::is_daemon(oop java_thread) {
1790 return java_thread->bool_field(_daemon_offset) != 0;
1791 }
1792
1793
1794 void java_lang_Thread::set_daemon(oop java_thread) {
1795 java_thread->bool_field_put(_daemon_offset, true);
1796 }
1797
1798 oop java_lang_Thread::context_class_loader(oop java_thread) {
1799 return java_thread->obj_field(_contextClassLoader_offset);
1800 }
1801
1802 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1803 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1804 }
1805
1806
1807 jlong java_lang_Thread::stackSize(oop java_thread) {
1808 return java_thread->long_field(_stackSize_offset);
1809 }
1810
1811 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1812 void java_lang_Thread::set_thread_status(oop java_thread,
1813 java_lang_Thread::ThreadStatus status) {
1814 java_thread->int_field_put(_thread_status_offset, status);
1815 }
1816
1817 // Read thread status value from threadStatus field in java.lang.Thread java class.
1818 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1819 // Make sure the caller is operating on behalf of the VM or is
1820 // running VM code (state == _thread_in_vm).
1821 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1822 JavaThread::current()->thread_state() == _thread_in_vm,
1823 "Java Thread is not running in vm");
1824 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1825 }
1826
1827
1828 jlong java_lang_Thread::thread_id(oop java_thread) {
1829 return java_thread->long_field(_tid_offset);
1830 }
1831
1832 oop java_lang_Thread::park_blocker(oop java_thread) {
1833 return java_thread->obj_field(_park_blocker_offset);
1834 }
1835
1836 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1837 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1838 switch (status) {
1839 case NEW : return "NEW";
1840 case RUNNABLE : return "RUNNABLE";
1841 case SLEEPING : return "TIMED_WAITING (sleeping)";
1842 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1843 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1844 case PARKED : return "WAITING (parking)";
1845 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1846 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1847 case TERMINATED : return "TERMINATED";
1848 default : return "UNKNOWN";
1849 };
1850 }
1851 int java_lang_ThreadGroup::_parent_offset;
1852 int java_lang_ThreadGroup::_name_offset;
1853 int java_lang_ThreadGroup::_threads_offset;
1854 int java_lang_ThreadGroup::_groups_offset;
1855 int java_lang_ThreadGroup::_maxPriority_offset;
1856 int java_lang_ThreadGroup::_destroyed_offset;
1857 int java_lang_ThreadGroup::_daemon_offset;
1858 int java_lang_ThreadGroup::_nthreads_offset;
1859 int java_lang_ThreadGroup::_ngroups_offset;
1860
1861 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1862 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1863 return java_thread_group->obj_field(_parent_offset);
1864 }
1865
1866 // ("name as oop" accessor is not necessary)
1867
1868 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1869 oop name = java_thread_group->obj_field(_name_offset);
1870 // ThreadGroup.name can be null
1871 if (name != NULL) {
1872 return java_lang_String::as_utf8_string(name);
1873 }
1874 return NULL;
1875 }
1876
1877 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1878 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1879 return java_thread_group->int_field(_nthreads_offset);
1880 }
1881
1882 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1883 oop threads = java_thread_group->obj_field(_threads_offset);
1884 assert(threads != NULL, "threadgroups should have threads");
1885 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1886 return objArrayOop(threads);
1887 }
1888
1889 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1890 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1891 return java_thread_group->int_field(_ngroups_offset);
1892 }
1893
1894 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1895 oop groups = java_thread_group->obj_field(_groups_offset);
1896 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1897 return objArrayOop(groups);
1898 }
1899
1900 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1901 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1902 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1903 }
1904
1905 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1906 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1907 return java_thread_group->bool_field(_destroyed_offset) != 0;
1908 }
1909
1910 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1911 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1912 return java_thread_group->bool_field(_daemon_offset) != 0;
1913 }
1914
1915 #define THREADGROUP_FIELDS_DO(macro) \
1916 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1917 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1918 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1919 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1920 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1921 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1922 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1923 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1924 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1925
1926 void java_lang_ThreadGroup::compute_offsets() {
1927 assert(_parent_offset == 0, "offsets should be initialized only once");
1928
1929 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1930 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1931 }
1932
1933 #if INCLUDE_CDS
1934 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1935 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1936 }
1937 #endif
1938
1939 // java_lang_Throwable
1940
1941 int java_lang_Throwable::_backtrace_offset;
1942 int java_lang_Throwable::_detailMessage_offset;
1943 int java_lang_Throwable::_stackTrace_offset;
1944 int java_lang_Throwable::_depth_offset;
1945 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
1946
1947 #define THROWABLE_FIELDS_DO(macro) \
1948 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
1949 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
1950 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1951 macro(_depth_offset, k, "depth", int_signature, false); \
1952 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1953
1954 void java_lang_Throwable::compute_offsets() {
1955 InstanceKlass* k = SystemDictionary::Throwable_klass();
1956 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1957 }
1958
1959 #if INCLUDE_CDS
1960 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1961 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1962 }
1963 #endif
1964
1965 oop java_lang_Throwable::unassigned_stacktrace() {
1966 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1967 oop base = ik->static_field_base_raw();
1968 return base->obj_field(_static_unassigned_stacktrace_offset);
1969 }
1970
1971 oop java_lang_Throwable::backtrace(oop throwable) {
1972 return throwable->obj_field_acquire(_backtrace_offset);
1973 }
1974
1975
1976 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1977 throwable->release_obj_field_put(_backtrace_offset, value);
1978 }
1979
1980 int java_lang_Throwable::depth(oop throwable) {
1981 return throwable->int_field(_depth_offset);
1982 }
1983
1984 void java_lang_Throwable::set_depth(oop throwable, int value) {
1985 throwable->int_field_put(_depth_offset, value);
1986 }
1987
1988 oop java_lang_Throwable::message(oop throwable) {
1989 return throwable->obj_field(_detailMessage_offset);
1990 }
1991
1992
1993 // Return Symbol for detailed_message or NULL
1994 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1995 PRESERVE_EXCEPTION_MARK; // Keep original exception
1996 oop detailed_message = java_lang_Throwable::message(throwable);
1997 if (detailed_message != NULL) {
1998 return java_lang_String::as_symbol(detailed_message);
1999 }
2000 return NULL;
2001 }
2002
2003 void java_lang_Throwable::set_message(oop throwable, oop value) {
2004 throwable->obj_field_put(_detailMessage_offset, value);
2005 }
2006
2007
2008 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2009 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2010 }
2011
2012 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2013 set_stacktrace(throwable, NULL);
2014 }
2015
2016
2017 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2018 ResourceMark rm;
2019 Klass* k = throwable->klass();
2020 assert(k != NULL, "just checking");
2021 st->print("%s", k->external_name());
2022 oop msg = message(throwable);
2023 if (msg != NULL) {
2024 st->print(": %s", java_lang_String::as_utf8_string(msg));
2025 }
2026 }
2027
2028 // After this many redefines, the stack trace is unreliable.
2029 const int MAX_VERSION = USHRT_MAX;
2030
2031 static inline bool version_matches(Method* method, int version) {
2032 assert(version < MAX_VERSION, "version is too big");
2033 return method != NULL && (method->constants()->version() == version);
2034 }
2035
2036 // This class provides a simple wrapper over the internal structure of
2037 // exception backtrace to insulate users of the backtrace from needing
2038 // to know what it looks like.
2039 // The code of this class is not GC safe. Allocations can only happen
2040 // in expand().
2041 class BacktraceBuilder: public StackObj {
2042 friend class BacktraceIterator;
2043 private:
2044 Handle _backtrace;
2045 objArrayOop _head;
2046 typeArrayOop _methods;
2047 typeArrayOop _bcis;
2048 objArrayOop _mirrors;
2049 typeArrayOop _names; // Needed to insulate method name against redefinition.
2050 // True if the top frame of the backtrace is omitted because it shall be hidden.
2051 bool _has_hidden_top_frame;
2052 int _index;
2053 NoSafepointVerifier _nsv;
2054
2055 enum {
2056 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2057 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2058 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2059 trace_names_offset = java_lang_Throwable::trace_names_offset,
2060 trace_next_offset = java_lang_Throwable::trace_next_offset,
2061 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2062 trace_size = java_lang_Throwable::trace_size,
2063 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2064 };
2065
2066 // get info out of chunks
2067 static typeArrayOop get_methods(objArrayHandle chunk) {
2068 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2069 assert(methods != NULL, "method array should be initialized in backtrace");
2070 return methods;
2071 }
2072 static typeArrayOop get_bcis(objArrayHandle chunk) {
2073 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2074 assert(bcis != NULL, "bci array should be initialized in backtrace");
2075 return bcis;
2076 }
2077 static objArrayOop get_mirrors(objArrayHandle chunk) {
2078 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2079 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2080 return mirrors;
2081 }
2082 static typeArrayOop get_names(objArrayHandle chunk) {
2083 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2084 assert(names != NULL, "names array should be initialized in backtrace");
2085 return names;
2086 }
2087 static bool has_hidden_top_frame(objArrayHandle chunk) {
2088 oop hidden = chunk->obj_at(trace_hidden_offset);
2089 return hidden != NULL;
2090 }
2091
2092 public:
2093
2094 // constructor for new backtrace
2095 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2096 expand(CHECK);
2097 _backtrace = Handle(THREAD, _head);
2098 _index = 0;
2099 }
2100
2101 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2102 _methods = get_methods(backtrace);
2103 _bcis = get_bcis(backtrace);
2104 _mirrors = get_mirrors(backtrace);
2105 _names = get_names(backtrace);
2106 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2107 assert(_methods->length() == _bcis->length() &&
2108 _methods->length() == _mirrors->length() &&
2109 _mirrors->length() == _names->length(),
2110 "method and source information arrays should match");
2111
2112 // head is the preallocated backtrace
2113 _head = backtrace();
2114 _backtrace = Handle(thread, _head);
2115 _index = 0;
2116 }
2117
2118 void expand(TRAPS) {
2119 objArrayHandle old_head(THREAD, _head);
2120 PauseNoSafepointVerifier pnsv(&_nsv);
2121
2122 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2123 objArrayHandle new_head(THREAD, head);
2124
2125 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2126 typeArrayHandle new_methods(THREAD, methods);
2127
2128 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2129 typeArrayHandle new_bcis(THREAD, bcis);
2130
2131 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2132 objArrayHandle new_mirrors(THREAD, mirrors);
2133
2134 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2135 typeArrayHandle new_names(THREAD, names);
2136
2137 if (!old_head.is_null()) {
2138 old_head->obj_at_put(trace_next_offset, new_head());
2139 }
2140 new_head->obj_at_put(trace_methods_offset, new_methods());
2141 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2142 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2143 new_head->obj_at_put(trace_names_offset, new_names());
2144 new_head->obj_at_put(trace_hidden_offset, NULL);
2145
2146 _head = new_head();
2147 _methods = new_methods();
2148 _bcis = new_bcis();
2149 _mirrors = new_mirrors();
2150 _names = new_names();
2151 _index = 0;
2152 }
2153
2154 oop backtrace() {
2155 return _backtrace();
2156 }
2157
2158 inline void push(Method* method, int bci, TRAPS) {
2159 // Smear the -1 bci to 0 since the array only holds unsigned
2160 // shorts. The later line number lookup would just smear the -1
2161 // to a 0 even if it could be recorded.
2162 if (bci == SynchronizationEntryBCI) bci = 0;
2163
2164 if (_index >= trace_chunk_size) {
2165 methodHandle mhandle(THREAD, method);
2166 expand(CHECK);
2167 method = mhandle();
2168 }
2169
2170 _methods->ushort_at_put(_index, method->orig_method_idnum());
2171 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2172
2173 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2174 // klass owning the symbols alive so their refcounts aren't decremented.
2175 Symbol* name = method->name();
2176 _names->symbol_at_put(_index, name);
2177
2178 // We need to save the mirrors in the backtrace to keep the class
2179 // from being unloaded while we still have this stack trace.
2180 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2181 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2182 _index++;
2183 }
2184
2185 void set_has_hidden_top_frame(TRAPS) {
2186 if (!_has_hidden_top_frame) {
2187 // It would be nice to add java/lang/Boolean::TRUE here
2188 // to indicate that this backtrace has a hidden top frame.
2189 // But this code is used before TRUE is allocated.
2190 // Therefore let's just use an arbitrary legal oop
2191 // available right here. _methods is a short[].
2192 assert(_methods != NULL, "we need a legal oop");
2193 _has_hidden_top_frame = true;
2194 _head->obj_at_put(trace_hidden_offset, _methods);
2195 }
2196 }
2197 };
2198
2199 struct BacktraceElement : public StackObj {
2200 int _method_id;
2201 int _bci;
2202 int _version;
2203 Symbol* _name;
2204 Handle _mirror;
2205 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2206 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2207 };
2208
2209 class BacktraceIterator : public StackObj {
2210 int _index;
2211 objArrayHandle _result;
2212 objArrayHandle _mirrors;
2213 typeArrayHandle _methods;
2214 typeArrayHandle _bcis;
2215 typeArrayHandle _names;
2216
2217 void init(objArrayHandle result, Thread* thread) {
2218 // Get method id, bci, version and mirror from chunk
2219 _result = result;
2220 if (_result.not_null()) {
2221 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2222 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2223 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2224 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2225 _index = 0;
2226 }
2227 }
2228 public:
2229 BacktraceIterator(objArrayHandle result, Thread* thread) {
2230 init(result, thread);
2231 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2232 }
2233
2234 BacktraceElement next(Thread* thread) {
2235 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2236 _methods->ushort_at(_index),
2237 Backtrace::version_at(_bcis->int_at(_index)),
2238 Backtrace::bci_at(_bcis->int_at(_index)),
2239 _names->symbol_at(_index));
2240 _index++;
2241
2242 if (_index >= java_lang_Throwable::trace_chunk_size) {
2243 int next_offset = java_lang_Throwable::trace_next_offset;
2244 // Get next chunk
2245 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2246 init(result, thread);
2247 }
2248 return e;
2249 }
2250
2251 bool repeat() {
2252 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2253 }
2254 };
2255
2256
2257 // Print stack trace element to resource allocated buffer
2258 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2259 int version, int bci, Symbol* name) {
2260 ResourceMark rm;
2261
2262 // Get strings and string lengths
2263 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2264 const char* klass_name = holder->external_name();
2265 int buf_len = (int)strlen(klass_name);
2266
2267 char* method_name = name->as_C_string();
2268 buf_len += (int)strlen(method_name);
2269
2270 char* source_file_name = NULL;
2271 Symbol* source = Backtrace::get_source_file_name(holder, version);
2272 if (source != NULL) {
2273 source_file_name = source->as_C_string();
2274 buf_len += (int)strlen(source_file_name);
2275 }
2276
2277 char *module_name = NULL, *module_version = NULL;
2278 ModuleEntry* module = holder->module();
2279 if (module->is_named()) {
2280 module_name = module->name()->as_C_string();
2281 buf_len += (int)strlen(module_name);
2282 if (module->version() != NULL) {
2283 module_version = module->version()->as_C_string();
2284 buf_len += (int)strlen(module_version);
2285 }
2286 }
2287
2288 // Allocate temporary buffer with extra space for formatting and line number
2289 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2290
2291 // Print stack trace line in buffer
2292 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2293
2294 // Print module information
2295 if (module_name != NULL) {
2296 if (module_version != NULL) {
2297 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2298 } else {
2299 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2300 }
2301 }
2302
2303 // The method can be NULL if the requested class version is gone
2304 Method* method = holder->method_with_orig_idnum(method_id, version);
2305 if (!version_matches(method, version)) {
2306 strcat(buf, "Redefined)");
2307 } else {
2308 int line_number = Backtrace::get_line_number(method, bci);
2309 if (line_number == -2) {
2310 strcat(buf, "Native Method)");
2311 } else {
2312 if (source_file_name != NULL && (line_number != -1)) {
2313 // Sourcename and linenumber
2314 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2315 } else if (source_file_name != NULL) {
2316 // Just sourcename
2317 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2318 } else {
2319 // Neither sourcename nor linenumber
2320 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2321 }
2322 CompiledMethod* nm = method->code();
2323 if (WizardMode && nm != NULL) {
2324 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2325 }
2326 }
2327 }
2328
2329 st->print_cr("%s", buf);
2330 }
2331
2332 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2333 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2334 int method_id = method->orig_method_idnum();
2335 int version = method->constants()->version();
2336 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2337 }
2338
2339 /**
2340 * Print the throwable message and its stack trace plus all causes by walking the
2341 * cause chain. The output looks the same as of Throwable.printStackTrace().
2342 */
2343 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2344 // First, print the message.
2345 print(throwable(), st);
2346 st->cr();
2347
2348 // Now print the stack trace.
2349 Thread* THREAD = Thread::current();
2350 while (throwable.not_null()) {
2351 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2352 if (result.is_null()) {
2353 st->print_raw_cr("\t<<no stack trace available>>");
2354 return;
2355 }
2356 BacktraceIterator iter(result, THREAD);
2357
2358 while (iter.repeat()) {
2359 BacktraceElement bte = iter.next(THREAD);
2360 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2361 }
2362 {
2363 // Call getCause() which doesn't necessarily return the _cause field.
2364 EXCEPTION_MARK;
2365 JavaValue cause(T_OBJECT);
2366 JavaCalls::call_virtual(&cause,
2367 throwable,
2368 throwable->klass(),
2369 vmSymbols::getCause_name(),
2370 vmSymbols::void_throwable_signature(),
2371 THREAD);
2372 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2373 if (HAS_PENDING_EXCEPTION) {
2374 CLEAR_PENDING_EXCEPTION;
2375 throwable = Handle();
2376 } else {
2377 throwable = Handle(THREAD, (oop) cause.get_jobject());
2378 if (throwable.not_null()) {
2379 st->print("Caused by: ");
2380 print(throwable(), st);
2381 st->cr();
2382 }
2383 }
2384 }
2385 }
2386 }
2387
2388 /**
2389 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2390 */
2391 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2392 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2393 JavaValue result(T_VOID);
2394 JavaCalls::call_virtual(&result,
2395 throwable,
2396 SystemDictionary::Throwable_klass(),
2397 vmSymbols::printStackTrace_name(),
2398 vmSymbols::void_method_signature(),
2399 THREAD);
2400 }
2401
2402 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2403 if (!StackTraceInThrowable) return;
2404 ResourceMark rm(THREAD);
2405
2406 // Start out by clearing the backtrace for this object, in case the VM
2407 // runs out of memory while allocating the stack trace
2408 set_backtrace(throwable(), NULL);
2409 // Clear lazily constructed Java level stacktrace if refilling occurs
2410 // This is unnecessary in 1.7+ but harmless
2411 clear_stacktrace(throwable());
2412
2413 int max_depth = MaxJavaStackTraceDepth;
2414 JavaThread* thread = THREAD->as_Java_thread();
2415
2416 BacktraceBuilder bt(CHECK);
2417
2418 // If there is no Java frame just return the method that was being called
2419 // with bci 0
2420 if (!thread->has_last_Java_frame()) {
2421 if (max_depth >= 1 && method() != NULL) {
2422 bt.push(method(), 0, CHECK);
2423 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2424 set_depth(throwable(), 1);
2425 set_backtrace(throwable(), bt.backtrace());
2426 }
2427 return;
2428 }
2429
2430 // Instead of using vframe directly, this version of fill_in_stack_trace
2431 // basically handles everything by hand. This significantly improved the
2432 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2433 // See bug 6333838 for more details.
2434 // The "ASSERT" here is to verify this method generates the exactly same stack
2435 // trace as utilizing vframe.
2436 #ifdef ASSERT
2437 vframeStream st(thread);
2438 #endif
2439 int total_count = 0;
2440 RegisterMap map(thread, false);
2441 int decode_offset = 0;
2442 CompiledMethod* nm = NULL;
2443 bool skip_fillInStackTrace_check = false;
2444 bool skip_throwableInit_check = false;
2445 bool skip_hidden = !ShowHiddenFrames;
2446
2447 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2448 Method* method = NULL;
2449 int bci = 0;
2450
2451 // Compiled java method case.
2452 if (decode_offset != 0) {
2453 DebugInfoReadStream stream(nm, decode_offset);
2454 decode_offset = stream.read_int();
2455 method = (Method*)nm->metadata_at(stream.read_int());
2456 bci = stream.read_bci();
2457 } else {
2458 if (fr.is_first_frame()) break;
2459 address pc = fr.pc();
2460 if (fr.is_interpreted_frame()) {
2461 address bcp = fr.interpreter_frame_bcp();
2462 method = fr.interpreter_frame_method();
2463 bci = method->bci_from(bcp);
2464 fr = fr.sender(&map);
2465 } else {
2466 CodeBlob* cb = fr.cb();
2467 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2468 // but non nmethod
2469 fr = fr.sender(&map);
2470 if (cb == NULL || !cb->is_compiled()) {
2471 continue;
2472 }
2473 nm = cb->as_compiled_method();
2474 if (nm->method()->is_native()) {
2475 method = nm->method();
2476 bci = 0;
2477 } else {
2478 PcDesc* pd = nm->pc_desc_at(pc);
2479 decode_offset = pd->scope_decode_offset();
2480 // if decode_offset is not equal to 0, it will execute the
2481 // "compiled java method case" at the beginning of the loop.
2482 continue;
2483 }
2484 }
2485 }
2486 #ifdef ASSERT
2487 assert(st.method() == method && st.bci() == bci,
2488 "Wrong stack trace");
2489 st.next();
2490 #endif
2491
2492 // the format of the stacktrace will be:
2493 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2494 // - 0 or more <init> methods for the exception class (skipped)
2495 // - rest of the stack
2496
2497 if (!skip_fillInStackTrace_check) {
2498 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2499 throwable->is_a(method->method_holder())) {
2500 continue;
2501 }
2502 else {
2503 skip_fillInStackTrace_check = true; // gone past them all
2504 }
2505 }
2506 if (!skip_throwableInit_check) {
2507 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2508
2509 // skip <init> methods of the exception class and superclasses
2510 // This is simlar to classic VM.
2511 if (method->name() == vmSymbols::object_initializer_name() &&
2512 throwable->is_a(method->method_holder())) {
2513 continue;
2514 } else {
2515 // there are none or we've seen them all - either way stop checking
2516 skip_throwableInit_check = true;
2517 }
2518 }
2519 if (method->is_hidden()) {
2520 if (skip_hidden) {
2521 if (total_count == 0) {
2522 // The top frame will be hidden from the stack trace.
2523 bt.set_has_hidden_top_frame(CHECK);
2524 }
2525 continue;
2526 }
2527 }
2528 bt.push(method, bci, CHECK);
2529 total_count++;
2530 }
2531
2532 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2533
2534 // Put completed stack trace into throwable object
2535 set_backtrace(throwable(), bt.backtrace());
2536 set_depth(throwable(), total_count);
2537 }
2538
2539 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2540 // No-op if stack trace is disabled
2541 if (!StackTraceInThrowable) {
2542 return;
2543 }
2544
2545 // Disable stack traces for some preallocated out of memory errors
2546 if (!Universe::should_fill_in_stack_trace(throwable)) {
2547 return;
2548 }
2549
2550 PRESERVE_EXCEPTION_MARK;
2551
2552 JavaThread* thread = JavaThread::active();
2553 fill_in_stack_trace(throwable, method, thread);
2554 // ignore exceptions thrown during stack trace filling
2555 CLEAR_PENDING_EXCEPTION;
2556 }
2557
2558 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2559 // Allocate stack trace - backtrace is created but not filled in
2560
2561 // No-op if stack trace is disabled
2562 if (!StackTraceInThrowable) return;
2563 BacktraceBuilder bt(CHECK); // creates a backtrace
2564 set_backtrace(throwable(), bt.backtrace());
2565 }
2566
2567
2568 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2569 // Fill in stack trace into preallocated backtrace (no GC)
2570
2571 // No-op if stack trace is disabled
2572 if (!StackTraceInThrowable) return;
2573
2574 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2575
2576 JavaThread* THREAD = JavaThread::current();
2577
2578 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2579 assert(backtrace.not_null(), "backtrace should have been preallocated");
2580
2581 ResourceMark rm(THREAD);
2582 vframeStream st(THREAD);
2583
2584 BacktraceBuilder bt(THREAD, backtrace);
2585
2586 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2587 // methods as preallocated errors aren't created by "java" code.
2588
2589 // fill in as much stack trace as possible
2590 int chunk_count = 0;
2591 for (;!st.at_end(); st.next()) {
2592 bt.push(st.method(), st.bci(), CHECK);
2593 chunk_count++;
2594
2595 // Bail-out for deep stacks
2596 if (chunk_count >= trace_chunk_size) break;
2597 }
2598 set_depth(throwable(), chunk_count);
2599 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2600
2601 // We support the Throwable immutability protocol defined for Java 7.
2602 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2603 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2604 }
2605
2606 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2607 objArrayHandle stack_trace_array_h, TRAPS) {
2608
2609 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2610 THROW(vmSymbols::java_lang_NullPointerException());
2611 }
2612
2613 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2614
2615 if (stack_trace_array_h->length() != depth(throwable())) {
2616 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2617 }
2618
2619 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2620 BacktraceIterator iter(result, THREAD);
2621
2622 int index = 0;
2623 while (iter.repeat()) {
2624 BacktraceElement bte = iter.next(THREAD);
2625
2626 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2627
2628 if (stack_trace_element.is_null()) {
2629 THROW(vmSymbols::java_lang_NullPointerException());
2630 }
2631
2632 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2633 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2634
2635 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2636 method,
2637 bte._version,
2638 bte._bci,
2639 bte._name, CHECK);
2640 }
2641 }
2642
2643 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2644 Thread* THREAD = Thread::current();
2645 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2646 BacktraceIterator iter(result, THREAD);
2647 // No backtrace available.
2648 if (!iter.repeat()) return false;
2649
2650 // If the exception happened in a frame that has been hidden, i.e.,
2651 // omitted from the back trace, we can not compute the message.
2652 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2653 if (hidden != NULL) {
2654 return false;
2655 }
2656
2657 // Get first backtrace element.
2658 BacktraceElement bte = iter.next(THREAD);
2659
2660 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2661 assert(holder != NULL, "first element should be non-null");
2662 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2663
2664 // Original version is no longer available.
2665 if (m == NULL || !version_matches(m, bte._version)) {
2666 return false;
2667 }
2668
2669 *method = m;
2670 *bci = bte._bci;
2671 return true;
2672 }
2673
2674 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2675 // Allocate java.lang.StackTraceElement instance
2676 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2677 assert(k != NULL, "must be loaded in 1.4+");
2678 if (k->should_be_initialized()) {
2679 k->initialize(CHECK_NULL);
2680 }
2681
2682 Handle element = k->allocate_instance_handle(CHECK_NULL);
2683
2684 int version = method->constants()->version();
2685 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2686 return element();
2687 }
2688
2689 void java_lang_StackTraceElement::fill_in(Handle element,
2690 InstanceKlass* holder, const methodHandle& method,
2691 int version, int bci, Symbol* name, TRAPS) {
2692 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2693
2694 ResourceMark rm(THREAD);
2695 HandleMark hm(THREAD);
2696
2697 // Fill in class name
2698 Handle java_class(THREAD, holder->java_mirror());
2699 oop classname = java_lang_Class::name(java_class, CHECK);
2700 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2701 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2702
2703 oop loader = holder->class_loader();
2704 if (loader != NULL) {
2705 oop loader_name = java_lang_ClassLoader::name(loader);
2706 if (loader_name != NULL)
2707 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2708 }
2709
2710 // Fill in method name
2711 oop methodname = StringTable::intern(name, CHECK);
2712 java_lang_StackTraceElement::set_methodName(element(), methodname);
2713
2714 // Fill in module name and version
2715 ModuleEntry* module = holder->module();
2716 if (module->is_named()) {
2717 oop module_name = StringTable::intern(module->name(), CHECK);
2718 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2719 oop module_version;
2720 if (module->version() != NULL) {
2721 module_version = StringTable::intern(module->version(), CHECK);
2722 } else {
2723 module_version = NULL;
2724 }
2725 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2726 }
2727
2728 if (method() == NULL || !version_matches(method(), version)) {
2729 // The method was redefined, accurate line number information isn't available
2730 java_lang_StackTraceElement::set_fileName(element(), NULL);
2731 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2732 } else {
2733 Symbol* source;
2734 oop source_file;
2735 int line_number;
2736 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2737
2738 java_lang_StackTraceElement::set_fileName(element(), source_file);
2739 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2740 }
2741 }
2742
2743 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2744 InstanceKlass* holder,
2745 int version,
2746 const methodHandle& method,
2747 int bci,
2748 Symbol*& source,
2749 oop& source_file,
2750 int& line_number, TRAPS) {
2751 // Fill in source file name and line number.
2752 source = Backtrace::get_source_file_name(holder, version);
2753 source_file = java_lang_Class::source_file(java_class());
2754 if (source != NULL) {
2755 // Class was not redefined. We can trust its cache if set,
2756 // else we have to initialize it.
2757 if (source_file == NULL) {
2758 source_file = StringTable::intern(source, CHECK);
2759 java_lang_Class::set_source_file(java_class(), source_file);
2760 }
2761 } else {
2762 // Class was redefined. Dump the cache if it was set.
2763 if (source_file != NULL) {
2764 source_file = NULL;
2765 java_lang_Class::set_source_file(java_class(), source_file);
2766 }
2767 }
2768 line_number = Backtrace::get_line_number(method(), bci);
2769 }
2770
2771 #if INCLUDE_JVMCI
2772 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2773 Symbol*& filename, int& line_number, TRAPS) {
2774 ResourceMark rm(THREAD);
2775 HandleMark hm(THREAD);
2776
2777 filename = NULL;
2778 line_number = -1;
2779
2780 oop source_file;
2781 int version = method->constants()->version();
2782 InstanceKlass* holder = method->method_holder();
2783 Handle java_class(THREAD, holder->java_mirror());
2784 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2785 }
2786 #endif // INCLUDE_JVMCI
2787
2788 // java_lang_StackFrameInfo
2789
2790 int java_lang_StackFrameInfo::_memberName_offset;
2791 int java_lang_StackFrameInfo::_bci_offset;
2792 int java_lang_StackFrameInfo::_version_offset;
2793
2794 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2795 macro(_memberName_offset, k, "memberName", object_signature, false); \
2796 macro(_bci_offset, k, "bci", int_signature, false)
2797
2798 void java_lang_StackFrameInfo::compute_offsets() {
2799 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2800 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2801 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2802 }
2803
2804 #if INCLUDE_CDS
2805 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2806 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2807 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2808 }
2809 #endif
2810
2811 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2812 HandleMark hm(THREAD);
2813 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2814 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2815 // we should expand MemberName::name when Throwable uses StackTrace
2816 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2817 return method;
2818 }
2819
2820 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2821 // set Method* or mid/cpref
2822 HandleMark hm(THREAD);
2823 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2824 InstanceKlass* ik = method->method_holder();
2825 CallInfo info(method(), ik, CHECK);
2826 MethodHandles::init_method_MemberName(mname, info, THREAD);
2827 // set bci
2828 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2829 // method may be redefined; store the version
2830 int version = method->constants()->version();
2831 assert((jushort)version == version, "version should be short");
2832 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2833 }
2834
2835 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2836 ResourceMark rm(THREAD);
2837 HandleMark hm(THREAD);
2838 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2839 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2840 InstanceKlass* holder = InstanceKlass::cast(clazz);
2841 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2842
2843 short version = stackFrame->short_field(_version_offset);
2844 int bci = stackFrame->int_field(_bci_offset);
2845 Symbol* name = method->name();
2846 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2847 version, bci, name, CHECK);
2848 }
2849
2850 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2851 element->short_field_put(_version_offset, value);
2852 }
2853
2854 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2855 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2856 element->int_field_put(_bci_offset, value);
2857 }
2858
2859 int java_lang_LiveStackFrameInfo::_monitors_offset;
2860 int java_lang_LiveStackFrameInfo::_locals_offset;
2861 int java_lang_LiveStackFrameInfo::_operands_offset;
2862 int java_lang_LiveStackFrameInfo::_mode_offset;
2863
2864 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2865 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2866 macro(_locals_offset, k, "locals", object_array_signature, false); \
2867 macro(_operands_offset, k, "operands", object_array_signature, false); \
2868 macro(_mode_offset, k, "mode", int_signature, false)
2869
2870 void java_lang_LiveStackFrameInfo::compute_offsets() {
2871 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2872 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2873 }
2874
2875 #if INCLUDE_CDS
2876 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2877 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2878 }
2879 #endif
2880
2881 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
2882 element->obj_field_put(_monitors_offset, value);
2883 }
2884
2885 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
2886 element->obj_field_put(_locals_offset, value);
2887 }
2888
2889 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
2890 element->obj_field_put(_operands_offset, value);
2891 }
2892
2893 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
2894 element->int_field_put(_mode_offset, value);
2895 }
2896
2897
2898 // java_lang_AccessibleObject
2899
2900 int java_lang_reflect_AccessibleObject::_override_offset;
2901
2902 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2903 macro(_override_offset, k, "override", bool_signature, false)
2904
2905 void java_lang_reflect_AccessibleObject::compute_offsets() {
2906 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2907 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2908 }
2909
2910 #if INCLUDE_CDS
2911 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2912 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2913 }
2914 #endif
2915
2916 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2917 return (jboolean) reflect->bool_field(_override_offset);
2918 }
2919
2920 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2921 reflect->bool_field_put(_override_offset, (int) value);
2922 }
2923
2924 // java_lang_reflect_Method
2925
2926 int java_lang_reflect_Method::_clazz_offset;
2927 int java_lang_reflect_Method::_name_offset;
2928 int java_lang_reflect_Method::_returnType_offset;
2929 int java_lang_reflect_Method::_parameterTypes_offset;
2930 int java_lang_reflect_Method::_exceptionTypes_offset;
2931 int java_lang_reflect_Method::_slot_offset;
2932 int java_lang_reflect_Method::_modifiers_offset;
2933 int java_lang_reflect_Method::_signature_offset;
2934 int java_lang_reflect_Method::_annotations_offset;
2935 int java_lang_reflect_Method::_parameter_annotations_offset;
2936 int java_lang_reflect_Method::_annotation_default_offset;
2937
2938 #define METHOD_FIELDS_DO(macro) \
2939 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2940 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2941 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2942 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2943 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2944 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2945 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2946 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2947 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2948 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2949 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2950
2951 void java_lang_reflect_Method::compute_offsets() {
2952 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2953 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2954 }
2955
2956 #if INCLUDE_CDS
2957 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2958 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2959 }
2960 #endif
2961
2962 Handle java_lang_reflect_Method::create(TRAPS) {
2963 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2964 Klass* klass = SystemDictionary::reflect_Method_klass();
2965 // This class is eagerly initialized during VM initialization, since we keep a refence
2966 // to one of the methods
2967 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2968 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2969 }
2970
2971 oop java_lang_reflect_Method::clazz(oop reflect) {
2972 return reflect->obj_field(_clazz_offset);
2973 }
2974
2975 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2976 reflect->obj_field_put(_clazz_offset, value);
2977 }
2978
2979 int java_lang_reflect_Method::slot(oop reflect) {
2980 return reflect->int_field(_slot_offset);
2981 }
2982
2983 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2984 reflect->int_field_put(_slot_offset, value);
2985 }
2986
2987 void java_lang_reflect_Method::set_name(oop method, oop value) {
2988 method->obj_field_put(_name_offset, value);
2989 }
2990
2991 oop java_lang_reflect_Method::return_type(oop method) {
2992 return method->obj_field(_returnType_offset);
2993 }
2994
2995 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2996 method->obj_field_put(_returnType_offset, value);
2997 }
2998
2999 oop java_lang_reflect_Method::parameter_types(oop method) {
3000 return method->obj_field(_parameterTypes_offset);
3001 }
3002
3003 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3004 method->obj_field_put(_parameterTypes_offset, value);
3005 }
3006
3007 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3008 method->obj_field_put(_exceptionTypes_offset, value);
3009 }
3010
3011 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3012 method->int_field_put(_modifiers_offset, value);
3013 }
3014
3015 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3016 method->obj_field_put(_signature_offset, value);
3017 }
3018
3019 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3020 method->obj_field_put(_annotations_offset, value);
3021 }
3022
3023 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3024 method->obj_field_put(_parameter_annotations_offset, value);
3025 }
3026
3027 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3028 method->obj_field_put(_annotation_default_offset, value);
3029 }
3030
3031 int java_lang_reflect_Constructor::_clazz_offset;
3032 int java_lang_reflect_Constructor::_parameterTypes_offset;
3033 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3034 int java_lang_reflect_Constructor::_slot_offset;
3035 int java_lang_reflect_Constructor::_modifiers_offset;
3036 int java_lang_reflect_Constructor::_signature_offset;
3037 int java_lang_reflect_Constructor::_annotations_offset;
3038 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3039
3040 #define CONSTRUCTOR_FIELDS_DO(macro) \
3041 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3042 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3043 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3044 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3045 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3046 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3047 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3048 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3049
3050 void java_lang_reflect_Constructor::compute_offsets() {
3051 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
3052 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3053 }
3054
3055 #if INCLUDE_CDS
3056 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3057 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3058 }
3059 #endif
3060
3061 Handle java_lang_reflect_Constructor::create(TRAPS) {
3062 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3063 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3064 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3065 InstanceKlass* ik = InstanceKlass::cast(k);
3066 // Ensure it is initialized
3067 ik->initialize(CHECK_NH);
3068 return ik->allocate_instance_handle(THREAD);
3069 }
3070
3071 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3072 return reflect->obj_field(_clazz_offset);
3073 }
3074
3075 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3076 reflect->obj_field_put(_clazz_offset, value);
3077 }
3078
3079 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3080 return constructor->obj_field(_parameterTypes_offset);
3081 }
3082
3083 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3084 constructor->obj_field_put(_parameterTypes_offset, value);
3085 }
3086
3087 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3088 constructor->obj_field_put(_exceptionTypes_offset, value);
3089 }
3090
3091 int java_lang_reflect_Constructor::slot(oop reflect) {
3092 return reflect->int_field(_slot_offset);
3093 }
3094
3095 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3096 reflect->int_field_put(_slot_offset, value);
3097 }
3098
3099 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3100 constructor->int_field_put(_modifiers_offset, value);
3101 }
3102
3103 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3104 constructor->obj_field_put(_signature_offset, value);
3105 }
3106
3107 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3108 constructor->obj_field_put(_annotations_offset, value);
3109 }
3110
3111 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3112 method->obj_field_put(_parameter_annotations_offset, value);
3113 }
3114
3115 int java_lang_reflect_Field::_clazz_offset;
3116 int java_lang_reflect_Field::_name_offset;
3117 int java_lang_reflect_Field::_type_offset;
3118 int java_lang_reflect_Field::_slot_offset;
3119 int java_lang_reflect_Field::_modifiers_offset;
3120 int java_lang_reflect_Field::_trusted_final_offset;
3121 int java_lang_reflect_Field::_signature_offset;
3122 int java_lang_reflect_Field::_annotations_offset;
3123
3124 #define FIELD_FIELDS_DO(macro) \
3125 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3126 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3127 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3128 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3129 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3130 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3131 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3132 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3133
3134 void java_lang_reflect_Field::compute_offsets() {
3135 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3136 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3137 }
3138
3139 #if INCLUDE_CDS
3140 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3141 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3142 }
3143 #endif
3144
3145 Handle java_lang_reflect_Field::create(TRAPS) {
3146 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3147 Symbol* name = vmSymbols::java_lang_reflect_Field();
3148 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3149 InstanceKlass* ik = InstanceKlass::cast(k);
3150 // Ensure it is initialized
3151 ik->initialize(CHECK_NH);
3152 return ik->allocate_instance_handle(THREAD);
3153 }
3154
3155 oop java_lang_reflect_Field::clazz(oop reflect) {
3156 return reflect->obj_field(_clazz_offset);
3157 }
3158
3159 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3160 reflect->obj_field_put(_clazz_offset, value);
3161 }
3162
3163 oop java_lang_reflect_Field::name(oop field) {
3164 return field->obj_field(_name_offset);
3165 }
3166
3167 void java_lang_reflect_Field::set_name(oop field, oop value) {
3168 field->obj_field_put(_name_offset, value);
3169 }
3170
3171 oop java_lang_reflect_Field::type(oop field) {
3172 return field->obj_field(_type_offset);
3173 }
3174
3175 void java_lang_reflect_Field::set_type(oop field, oop value) {
3176 field->obj_field_put(_type_offset, value);
3177 }
3178
3179 int java_lang_reflect_Field::slot(oop reflect) {
3180 return reflect->int_field(_slot_offset);
3181 }
3182
3183 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3184 reflect->int_field_put(_slot_offset, value);
3185 }
3186
3187 int java_lang_reflect_Field::modifiers(oop field) {
3188 return field->int_field(_modifiers_offset);
3189 }
3190
3191 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3192 field->int_field_put(_modifiers_offset, value);
3193 }
3194
3195 void java_lang_reflect_Field::set_trusted_final(oop field) {
3196 field->bool_field_put(_trusted_final_offset, true);
3197 }
3198
3199 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3200 field->obj_field_put(_signature_offset, value);
3201 }
3202
3203 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3204 field->obj_field_put(_annotations_offset, value);
3205 }
3206
3207 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3208 // Allocate java.lang.reflect.RecordComponent instance
3209 HandleMark hm(THREAD);
3210 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3211 assert(ik != NULL, "must be loaded");
3212 ik->initialize(CHECK_NULL);
3213
3214 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3215
3216 Handle decl_class(THREAD, holder->java_mirror());
3217 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3218
3219 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3220 oop component_name = StringTable::intern(name, CHECK_NULL);
3221 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3222
3223 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3224 Handle component_type_h =
3225 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3226 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3227
3228 Method* accessor_method = NULL;
3229 {
3230 // Prepend "()" to type to create the full method signature.
3231 ResourceMark rm(THREAD);
3232 int sig_len = type->utf8_length() + 3; // "()" and null char
3233 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3234 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3235 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3236 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3237 }
3238
3239 if (accessor_method != NULL) {
3240 methodHandle method(THREAD, accessor_method);
3241 oop m = Reflection::new_method(method, false, CHECK_NULL);
3242 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3243 } else {
3244 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3245 }
3246
3247 int sig_index = component->generic_signature_index();
3248 if (sig_index > 0) {
3249 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3250 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3251 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3252 } else {
3253 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3254 }
3255
3256 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3257 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3258
3259 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3260 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3261
3262 return element();
3263 }
3264
3265 int reflect_ConstantPool::_oop_offset;
3266
3267 #define CONSTANTPOOL_FIELDS_DO(macro) \
3268 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3269
3270 void reflect_ConstantPool::compute_offsets() {
3271 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3272 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3273 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3274 }
3275
3276 #if INCLUDE_CDS
3277 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3278 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3279 }
3280 #endif
3281
3282 int java_lang_reflect_Parameter::_name_offset;
3283 int java_lang_reflect_Parameter::_modifiers_offset;
3284 int java_lang_reflect_Parameter::_index_offset;
3285 int java_lang_reflect_Parameter::_executable_offset;
3286
3287 #define PARAMETER_FIELDS_DO(macro) \
3288 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3289 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3290 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3291 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3292
3293 void java_lang_reflect_Parameter::compute_offsets() {
3294 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3295 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3296 }
3297
3298 #if INCLUDE_CDS
3299 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3300 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3301 }
3302 #endif
3303
3304 Handle java_lang_reflect_Parameter::create(TRAPS) {
3305 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3306 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3307 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3308 InstanceKlass* ik = InstanceKlass::cast(k);
3309 // Ensure it is initialized
3310 ik->initialize(CHECK_NH);
3311 return ik->allocate_instance_handle(THREAD);
3312 }
3313
3314 oop java_lang_reflect_Parameter::name(oop param) {
3315 return param->obj_field(_name_offset);
3316 }
3317
3318 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3319 param->obj_field_put(_name_offset, value);
3320 }
3321
3322 int java_lang_reflect_Parameter::modifiers(oop param) {
3323 return param->int_field(_modifiers_offset);
3324 }
3325
3326 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3327 param->int_field_put(_modifiers_offset, value);
3328 }
3329
3330 int java_lang_reflect_Parameter::index(oop param) {
3331 return param->int_field(_index_offset);
3332 }
3333
3334 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3335 param->int_field_put(_index_offset, value);
3336 }
3337
3338 oop java_lang_reflect_Parameter::executable(oop param) {
3339 return param->obj_field(_executable_offset);
3340 }
3341
3342 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3343 param->obj_field_put(_executable_offset, value);
3344 }
3345
3346 // java_lang_Module
3347
3348 int java_lang_Module::_loader_offset;
3349 int java_lang_Module::_name_offset;
3350 int java_lang_Module::_module_entry_offset;
3351
3352 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3353 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3354 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3355 vmSymbols::java_lang_module_init_signature(),
3356 loader, module_name, CHECK_NH);
3357 }
3358
3359 #define MODULE_FIELDS_DO(macro) \
3360 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3361 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3362
3363 void java_lang_Module::compute_offsets() {
3364 InstanceKlass* k = SystemDictionary::Module_klass();
3365 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3366 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3367 }
3368
3369 #if INCLUDE_CDS
3370 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3371 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3372 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3373 }
3374 #endif
3375
3376 oop java_lang_Module::loader(oop module) {
3377 return module->obj_field(_loader_offset);
3378 }
3379
3380 void java_lang_Module::set_loader(oop module, oop value) {
3381 module->obj_field_put(_loader_offset, value);
3382 }
3383
3384 oop java_lang_Module::name(oop module) {
3385 return module->obj_field(_name_offset);
3386 }
3387
3388 void java_lang_Module::set_name(oop module, oop value) {
3389 module->obj_field_put(_name_offset, value);
3390 }
3391
3392 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3393 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3394 assert(module != NULL, "module can't be null");
3395 assert(oopDesc::is_oop(module), "module must be oop");
3396
3397 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3398 return module_entry;
3399 }
3400
3401 ModuleEntry* java_lang_Module::module_entry(oop module) {
3402 ModuleEntry* module_entry = module_entry_raw(module);
3403 if (module_entry == NULL) {
3404 // If the inject field containing the ModuleEntry* is null then return the
3405 // class loader's unnamed module.
3406 oop loader = java_lang_Module::loader(module);
3407 Handle h_loader = Handle(Thread::current(), loader);
3408 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3409 return loader_cld->unnamed_module();
3410 }
3411 return module_entry;
3412 }
3413
3414 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3415 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3416 assert(module != NULL, "module can't be null");
3417 assert(oopDesc::is_oop(module), "module must be oop");
3418 module->address_field_put(_module_entry_offset, (address)module_entry);
3419 }
3420
3421 Handle reflect_ConstantPool::create(TRAPS) {
3422 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3423 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3424 // Ensure it is initialized
3425 k->initialize(CHECK_NH);
3426 return k->allocate_instance_handle(THREAD);
3427 }
3428
3429
3430 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3431 oop mirror = value->pool_holder()->java_mirror();
3432 // Save the mirror to get back the constant pool.
3433 reflect->obj_field_put(_oop_offset, mirror);
3434 }
3435
3436 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3437
3438 oop mirror = reflect->obj_field(_oop_offset);
3439 Klass* k = java_lang_Class::as_Klass(mirror);
3440 assert(k->is_instance_klass(), "Must be");
3441
3442 // Get the constant pool back from the klass. Since class redefinition
3443 // merges the new constant pool into the old, this is essentially the
3444 // same constant pool as the original. If constant pool merging is
3445 // no longer done in the future, this will have to change to save
3446 // the original.
3447 return InstanceKlass::cast(k)->constants();
3448 }
3449
3450 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3451
3452 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3453 macro(_base_offset, k, "base", object_signature, false)
3454
3455 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3456 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3457 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3458 }
3459
3460 #if INCLUDE_CDS
3461 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3462 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3463 }
3464 #endif
3465
3466 // Support for java_lang_ref_Reference
3467
3468 bool java_lang_ref_Reference::_offsets_initialized;
3469
3470 int java_lang_ref_Reference::_referent_offset;
3471 int java_lang_ref_Reference::_queue_offset;
3472 int java_lang_ref_Reference::_next_offset;
3473 int java_lang_ref_Reference::_discovered_offset;
3474
3475 #define REFERENCE_FIELDS_DO(macro) \
3476 macro(_referent_offset, k, "referent", object_signature, false); \
3477 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3478 macro(_next_offset, k, "next", reference_signature, false); \
3479 macro(_discovered_offset, k, "discovered", reference_signature, false);
3480
3481 void java_lang_ref_Reference::compute_offsets() {
3482 if (_offsets_initialized) {
3483 return;
3484 }
3485 _offsets_initialized = true;
3486 InstanceKlass* k = SystemDictionary::Reference_klass();
3487 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3488 }
3489
3490 #if INCLUDE_CDS
3491 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3492 f->do_bool(&_offsets_initialized);
3493 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3494 }
3495 #endif
3496
3497 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3498 assert(obj != NULL, "sanity");
3499 if (offset != _referent_offset) {
3500 return false;
3501 }
3502
3503 Klass* k = obj->klass();
3504 if (!k->is_instance_klass()) {
3505 return false;
3506 }
3507
3508 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3509 bool is_reference = ik->reference_type() != REF_NONE;
3510 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3511 return is_reference;
3512 }
3513
3514 int java_lang_boxing_object::_value_offset;
3515 int java_lang_boxing_object::_long_value_offset;
3516
3517 #define BOXING_FIELDS_DO(macro) \
3518 macro(_value_offset, integerKlass, "value", int_signature, false); \
3519 macro(_long_value_offset, longKlass, "value", long_signature, false);
3520
3521 void java_lang_boxing_object::compute_offsets() {
3522 InstanceKlass* integerKlass = SystemDictionary::Integer_klass();
3523 InstanceKlass* longKlass = SystemDictionary::Long_klass();
3524 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3525 }
3526
3527 #if INCLUDE_CDS
3528 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3529 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3530 }
3531 #endif
3532
3533 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3534 Klass* k = SystemDictionary::box_klass(type);
3535 if (k == NULL) return NULL;
3536 InstanceKlass* ik = InstanceKlass::cast(k);
3537 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3538 return ik->allocate_instance(THREAD);
3539 }
3540
3541
3542 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3543 oop box = initialize_and_allocate(type, CHECK_NULL);
3544 if (box == NULL) return NULL;
3545 switch (type) {
3546 case T_BOOLEAN:
3547 box->bool_field_put(_value_offset, value->z);
3548 break;
3549 case T_CHAR:
3550 box->char_field_put(_value_offset, value->c);
3551 break;
3552 case T_FLOAT:
3553 box->float_field_put(_value_offset, value->f);
3554 break;
3555 case T_DOUBLE:
3556 box->double_field_put(_long_value_offset, value->d);
3557 break;
3558 case T_BYTE:
3559 box->byte_field_put(_value_offset, value->b);
3560 break;
3561 case T_SHORT:
3562 box->short_field_put(_value_offset, value->s);
3563 break;
3564 case T_INT:
3565 box->int_field_put(_value_offset, value->i);
3566 break;
3567 case T_LONG:
3568 box->long_field_put(_long_value_offset, value->j);
3569 break;
3570 default:
3571 return NULL;
3572 }
3573 return box;
3574 }
3575
3576
3577 BasicType java_lang_boxing_object::basic_type(oop box) {
3578 if (box == NULL) return T_ILLEGAL;
3579 BasicType type = SystemDictionary::box_klass_type(box->klass());
3580 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3581 return T_ILLEGAL;
3582 return type;
3583 }
3584
3585
3586 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3587 BasicType type = SystemDictionary::box_klass_type(box->klass());
3588 switch (type) {
3589 case T_BOOLEAN:
3590 value->z = box->bool_field(_value_offset);
3591 break;
3592 case T_CHAR:
3593 value->c = box->char_field(_value_offset);
3594 break;
3595 case T_FLOAT:
3596 value->f = box->float_field(_value_offset);
3597 break;
3598 case T_DOUBLE:
3599 value->d = box->double_field(_long_value_offset);
3600 break;
3601 case T_BYTE:
3602 value->b = box->byte_field(_value_offset);
3603 break;
3604 case T_SHORT:
3605 value->s = box->short_field(_value_offset);
3606 break;
3607 case T_INT:
3608 value->i = box->int_field(_value_offset);
3609 break;
3610 case T_LONG:
3611 value->j = box->long_field(_long_value_offset);
3612 break;
3613 default:
3614 return T_ILLEGAL;
3615 } // end switch
3616 return type;
3617 }
3618
3619
3620 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3621 BasicType type = SystemDictionary::box_klass_type(box->klass());
3622 switch (type) {
3623 case T_BOOLEAN:
3624 box->bool_field_put(_value_offset, value->z);
3625 break;
3626 case T_CHAR:
3627 box->char_field_put(_value_offset, value->c);
3628 break;
3629 case T_FLOAT:
3630 box->float_field_put(_value_offset, value->f);
3631 break;
3632 case T_DOUBLE:
3633 box->double_field_put(_long_value_offset, value->d);
3634 break;
3635 case T_BYTE:
3636 box->byte_field_put(_value_offset, value->b);
3637 break;
3638 case T_SHORT:
3639 box->short_field_put(_value_offset, value->s);
3640 break;
3641 case T_INT:
3642 box->int_field_put(_value_offset, value->i);
3643 break;
3644 case T_LONG:
3645 box->long_field_put(_long_value_offset, value->j);
3646 break;
3647 default:
3648 return T_ILLEGAL;
3649 } // end switch
3650 return type;
3651 }
3652
3653
3654 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3655 switch (type) {
3656 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3657 case T_CHAR: st->print("%d", value->c); break;
3658 case T_BYTE: st->print("%d", value->b); break;
3659 case T_SHORT: st->print("%d", value->s); break;
3660 case T_INT: st->print("%d", value->i); break;
3661 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3662 case T_FLOAT: st->print("%f", value->f); break;
3663 case T_DOUBLE: st->print("%lf", value->d); break;
3664 default: st->print("type %d?", type); break;
3665 }
3666 }
3667
3668
3669 // Support for java_lang_ref_SoftReference
3670 //
3671
3672 int java_lang_ref_SoftReference::_timestamp_offset;
3673 int java_lang_ref_SoftReference::_static_clock_offset;
3674
3675 #define SOFTREFERENCE_FIELDS_DO(macro) \
3676 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3677 macro(_static_clock_offset, k, "clock", long_signature, true)
3678
3679 void java_lang_ref_SoftReference::compute_offsets() {
3680 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3681 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3682 }
3683
3684 #if INCLUDE_CDS
3685 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3686 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3687 }
3688 #endif
3689
3690 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3691 return ref->long_field(_timestamp_offset);
3692 }
3693
3694 jlong java_lang_ref_SoftReference::clock() {
3695 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3696 oop base = ik->static_field_base_raw();
3697 return base->long_field(_static_clock_offset);
3698 }
3699
3700 void java_lang_ref_SoftReference::set_clock(jlong value) {
3701 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3702 oop base = ik->static_field_base_raw();
3703 base->long_field_put(_static_clock_offset, value);
3704 }
3705
3706 // Support for java_lang_invoke_DirectMethodHandle
3707
3708 int java_lang_invoke_DirectMethodHandle::_member_offset;
3709
3710 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3711 oop member_name = NULL;
3712 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3713 "a DirectMethodHandle oop is expected");
3714 return dmh->obj_field(_member_offset);
3715 }
3716
3717 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3718 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3719
3720 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3721 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3722 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3723 }
3724
3725 #if INCLUDE_CDS
3726 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3727 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3728 }
3729 #endif
3730
3731 // Support for java_lang_invoke_MethodHandle
3732
3733 int java_lang_invoke_MethodHandle::_type_offset;
3734 int java_lang_invoke_MethodHandle::_form_offset;
3735
3736 int java_lang_invoke_MemberName::_clazz_offset;
3737 int java_lang_invoke_MemberName::_name_offset;
3738 int java_lang_invoke_MemberName::_type_offset;
3739 int java_lang_invoke_MemberName::_flags_offset;
3740 int java_lang_invoke_MemberName::_method_offset;
3741 int java_lang_invoke_MemberName::_vmindex_offset;
3742
3743 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3744 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3745
3746 int java_lang_invoke_LambdaForm::_vmentry_offset;
3747
3748 #define METHODHANDLE_FIELDS_DO(macro) \
3749 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3750 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3751
3752 void java_lang_invoke_MethodHandle::compute_offsets() {
3753 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3754 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3755 }
3756
3757 #if INCLUDE_CDS
3758 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3759 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3760 }
3761 #endif
3762
3763 #define MEMBERNAME_FIELDS_DO(macro) \
3764 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3765 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3766 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3767 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3768 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3769
3770 void java_lang_invoke_MemberName::compute_offsets() {
3771 InstanceKlass* k = SystemDictionary::MemberName_klass();
3772 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3773 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3774 }
3775
3776 #if INCLUDE_CDS
3777 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3778 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3779 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3780 }
3781 #endif
3782
3783 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3784 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3785 assert(k != NULL, "jdk mismatch");
3786 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3787 }
3788
3789 #if INCLUDE_CDS
3790 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3791 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3792 }
3793 #endif
3794
3795 #define LAMBDAFORM_FIELDS_DO(macro) \
3796 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3797
3798 void java_lang_invoke_LambdaForm::compute_offsets() {
3799 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3800 assert (k != NULL, "jdk mismatch");
3801 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3802 }
3803
3804 #if INCLUDE_CDS
3805 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3806 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3807 }
3808 #endif
3809
3810 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3811 return obj != NULL && is_subclass(obj->klass());
3812 }
3813
3814
3815 oop java_lang_invoke_MethodHandle::type(oop mh) {
3816 return mh->obj_field(_type_offset);
3817 }
3818
3819 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3820 mh->obj_field_put(_type_offset, mtype);
3821 }
3822
3823 oop java_lang_invoke_MethodHandle::form(oop mh) {
3824 assert(_form_offset != 0, "");
3825 return mh->obj_field(_form_offset);
3826 }
3827
3828 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3829 assert(_form_offset != 0, "");
3830 mh->obj_field_put(_form_offset, lform);
3831 }
3832
3833 /// MemberName accessors
3834
3835 oop java_lang_invoke_MemberName::clazz(oop mname) {
3836 assert(is_instance(mname), "wrong type");
3837 return mname->obj_field(_clazz_offset);
3838 }
3839
3840 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3841 assert(is_instance(mname), "wrong type");
3842 mname->obj_field_put(_clazz_offset, clazz);
3843 }
3844
3845 oop java_lang_invoke_MemberName::name(oop mname) {
3846 assert(is_instance(mname), "wrong type");
3847 return mname->obj_field(_name_offset);
3848 }
3849
3850 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3851 assert(is_instance(mname), "wrong type");
3852 mname->obj_field_put(_name_offset, name);
3853 }
3854
3855 oop java_lang_invoke_MemberName::type(oop mname) {
3856 assert(is_instance(mname), "wrong type");
3857 return mname->obj_field(_type_offset);
3858 }
3859
3860 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3861 assert(is_instance(mname), "wrong type");
3862 mname->obj_field_put(_type_offset, type);
3863 }
3864
3865 int java_lang_invoke_MemberName::flags(oop mname) {
3866 assert(is_instance(mname), "wrong type");
3867 return mname->int_field(_flags_offset);
3868 }
3869
3870 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3871 assert(is_instance(mname), "wrong type");
3872 mname->int_field_put(_flags_offset, flags);
3873 }
3874
3875
3876 // Return vmtarget from ResolvedMethodName method field through indirection
3877 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3878 assert(is_instance(mname), "wrong type");
3879 oop method = mname->obj_field(_method_offset);
3880 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3881 }
3882
3883 bool java_lang_invoke_MemberName::is_method(oop mname) {
3884 assert(is_instance(mname), "must be MemberName");
3885 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3886 }
3887
3888 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3889 assert(is_instance(mname), "wrong type");
3890 mname->obj_field_put(_method_offset, resolved_method);
3891 }
3892
3893 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3894 assert(is_instance(mname), "wrong type");
3895 return (intptr_t) mname->address_field(_vmindex_offset);
3896 }
3897
3898 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3899 assert(is_instance(mname), "wrong type");
3900 mname->address_field_put(_vmindex_offset, (address) index);
3901 }
3902
3903
3904 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3905 assert(is_instance(resolved_method), "wrong type");
3906 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3907 assert(m->is_method(), "must be");
3908 return m;
3909 }
3910
3911 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3912 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3913 assert(is_instance(resolved_method), "wrong type");
3914 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3915 }
3916
3917 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3918 assert(is_instance(resolved_method), "wrong type");
3919 resolved_method->obj_field_put(_vmholder_offset, holder);
3920 }
3921
3922 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3923 const Method* method = m();
3924
3925 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3926 oop resolved_method = ResolvedMethodTable::find_method(method);
3927 if (resolved_method != NULL) {
3928 return resolved_method;
3929 }
3930
3931 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3932 if (!k->is_initialized()) {
3933 k->initialize(CHECK_NULL);
3934 }
3935
3936 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3937
3938 NoSafepointVerifier nsv;
3939
3940 if (method->is_old()) {
3941 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3942 method->get_new_method();
3943 }
3944
3945 InstanceKlass* holder = method->method_holder();
3946
3947 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3948 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3949 // distinct loaders) to ensure the metadata is kept alive.
3950 // This mirror may be different than the one in clazz field.
3951 set_vmholder(new_resolved_method, holder->java_mirror());
3952
3953 // Set flag in class to indicate this InstanceKlass has entries in the table
3954 // to avoid walking table during redefinition if none of the redefined classes
3955 // have any membernames in the table.
3956 holder->set_has_resolved_methods();
3957
3958 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3959 }
3960
3961 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3962 assert(is_instance(lform), "wrong type");
3963 return lform->obj_field(_vmentry_offset);
3964 }
3965
3966
3967 // Support for java_lang_invoke_MethodType
3968
3969 int java_lang_invoke_MethodType::_rtype_offset;
3970 int java_lang_invoke_MethodType::_ptypes_offset;
3971
3972 #define METHODTYPE_FIELDS_DO(macro) \
3973 macro(_rtype_offset, k, "rtype", class_signature, false); \
3974 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3975
3976 void java_lang_invoke_MethodType::compute_offsets() {
3977 InstanceKlass* k = SystemDictionary::MethodType_klass();
3978 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3979 }
3980
3981 #if INCLUDE_CDS
3982 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3983 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3984 }
3985 #endif
3986
3987 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3988 st->print("(");
3989 objArrayOop pts = ptypes(mt);
3990 for (int i = 0, limit = pts->length(); i < limit; i++) {
3991 java_lang_Class::print_signature(pts->obj_at(i), st);
3992 }
3993 st->print(")");
3994 java_lang_Class::print_signature(rtype(mt), st);
3995 }
3996
3997 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3998 ResourceMark rm;
3999 stringStream buffer(128);
4000 print_signature(mt, &buffer);
4001 const char* sigstr = buffer.base();
4002 int siglen = (int) buffer.size();
4003 Symbol *name;
4004 if (!intern_if_not_found) {
4005 name = SymbolTable::probe(sigstr, siglen);
4006 } else {
4007 name = SymbolTable::new_symbol(sigstr, siglen);
4008 }
4009 return name;
4010 }
4011
4012 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4013 if (mt1 == mt2)
4014 return true;
4015 if (rtype(mt1) != rtype(mt2))
4016 return false;
4017 if (ptype_count(mt1) != ptype_count(mt2))
4018 return false;
4019 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4020 if (ptype(mt1, i) != ptype(mt2, i))
4021 return false;
4022 }
4023 return true;
4024 }
4025
4026 oop java_lang_invoke_MethodType::rtype(oop mt) {
4027 assert(is_instance(mt), "must be a MethodType");
4028 return mt->obj_field(_rtype_offset);
4029 }
4030
4031 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4032 assert(is_instance(mt), "must be a MethodType");
4033 return (objArrayOop) mt->obj_field(_ptypes_offset);
4034 }
4035
4036 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4037 return ptypes(mt)->obj_at(idx);
4038 }
4039
4040 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4041 return ptypes(mt)->length();
4042 }
4043
4044 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4045 objArrayOop pts = ptypes(mt);
4046 int count = pts->length();
4047 int slots = 0;
4048 for (int i = 0; i < count; i++) {
4049 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4050 slots += type2size[bt];
4051 }
4052 return slots;
4053 }
4054
4055 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4056 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4057 return type2size[bt];
4058 }
4059
4060
4061 // Support for java_lang_invoke_CallSite
4062
4063 int java_lang_invoke_CallSite::_target_offset;
4064 int java_lang_invoke_CallSite::_context_offset;
4065
4066 #define CALLSITE_FIELDS_DO(macro) \
4067 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4068 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4069
4070 void java_lang_invoke_CallSite::compute_offsets() {
4071 InstanceKlass* k = SystemDictionary::CallSite_klass();
4072 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4073 }
4074
4075 #if INCLUDE_CDS
4076 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4077 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4078 }
4079 #endif
4080
4081 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4082 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4083
4084 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4085 return dep_oop;
4086 }
4087
4088 // Support for java_lang_invoke_ConstantCallSite
4089
4090 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4091
4092 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4093 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4094
4095 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4096 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
4097 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4098 }
4099
4100 #if INCLUDE_CDS
4101 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4102 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4103 }
4104 #endif
4105
4106 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4107
4108 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4109 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4110
4111 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4112 InstanceKlass* k = SystemDictionary::Context_klass();
4113 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4114 }
4115
4116 #if INCLUDE_CDS
4117 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4118 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4119 }
4120 #endif
4121
4122 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4123 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4124 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4125 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4126 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4127 return dep_ctx;
4128 }
4129
4130 // Support for java_security_AccessControlContext
4131
4132 int java_security_AccessControlContext::_context_offset;
4133 int java_security_AccessControlContext::_privilegedContext_offset;
4134 int java_security_AccessControlContext::_isPrivileged_offset;
4135 int java_security_AccessControlContext::_isAuthorized_offset;
4136
4137 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4138 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4139 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4140 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4141 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4142
4143 void java_security_AccessControlContext::compute_offsets() {
4144 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4145 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4146 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4147 }
4148
4149 #if INCLUDE_CDS
4150 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4151 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4152 }
4153 #endif
4154
4155 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4156 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4157 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4158 // Ensure klass is initialized
4159 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4160 // Allocate result
4161 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4162 // Fill in values
4163 result->obj_field_put(_context_offset, context());
4164 result->obj_field_put(_privilegedContext_offset, privileged_context());
4165 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4166 // whitelist AccessControlContexts created by the JVM
4167 result->bool_field_put(_isAuthorized_offset, true);
4168 return result;
4169 }
4170
4171
4172 // Support for java_lang_ClassLoader
4173
4174 int java_lang_ClassLoader::_loader_data_offset;
4175 int java_lang_ClassLoader::_parallelCapable_offset;
4176 int java_lang_ClassLoader::_name_offset;
4177 int java_lang_ClassLoader::_nameAndId_offset;
4178 int java_lang_ClassLoader::_unnamedModule_offset;
4179 int java_lang_ClassLoader::_parent_offset;
4180
4181 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4182 assert(loader != NULL, "loader must not be NULL");
4183 assert(oopDesc::is_oop(loader), "loader must be oop");
4184 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4185 }
4186
4187 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4188 assert(loader != NULL, "loader must not be NULL");
4189 assert(oopDesc::is_oop(loader), "loader must be oop");
4190 return RawAccess<>::load_at(loader, _loader_data_offset);
4191 }
4192
4193 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4194 assert(loader != NULL, "loader must not be NULL");
4195 assert(oopDesc::is_oop(loader), "loader must be oop");
4196 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4197 }
4198
4199 #define CLASSLOADER_FIELDS_DO(macro) \
4200 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4201 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4202 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4203 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4204 macro(_parent_offset, k1, "parent", classloader_signature, false)
4205
4206 void java_lang_ClassLoader::compute_offsets() {
4207 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4208 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4209
4210 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4211 }
4212
4213 #if INCLUDE_CDS
4214 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4215 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4216 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4217 }
4218 #endif
4219
4220 oop java_lang_ClassLoader::parent(oop loader) {
4221 assert(is_instance(loader), "loader must be oop");
4222 return loader->obj_field(_parent_offset);
4223 }
4224
4225 // Returns the name field of this class loader. If the name field has not
4226 // been set, null will be returned.
4227 oop java_lang_ClassLoader::name(oop loader) {
4228 assert(is_instance(loader), "loader must be oop");
4229 return loader->obj_field(_name_offset);
4230 }
4231
4232 // Returns the nameAndId field of this class loader. The format is
4233 // as follows:
4234 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4235 // If the defining loader has no name then <qualified-class-name> @<id>
4236 // If built-in loader, then omit '@<id>' as there is only one instance.
4237 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4238 oop java_lang_ClassLoader::nameAndId(oop loader) {
4239 assert(is_instance(loader), "loader must be oop");
4240 return loader->obj_field(_nameAndId_offset);
4241 }
4242
4243 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4244 assert(is_instance(loader), "loader must be oop");
4245 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4246 oop acl = loader;
4247 debug_only(jint loop_count = 0);
4248 // This loop taken verbatim from ClassLoader.java:
4249 do {
4250 acl = parent(acl);
4251 if (cl == acl) {
4252 return true;
4253 }
4254 assert(++loop_count > 0, "loop_count overflow");
4255 } while (acl != NULL);
4256 return false;
4257 }
4258
4259 bool java_lang_ClassLoader::is_instance(oop obj) {
4260 return obj != NULL && is_subclass(obj->klass());
4261 }
4262
4263
4264 // For class loader classes, parallelCapable defined
4265 // based on non-null field
4266 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4267 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4268 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4269 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4270 }
4271
4272 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4273 // Fix for 4474172; see evaluation for more details
4274 loader = non_reflection_class_loader(loader);
4275
4276 oop cl = SystemDictionary::java_system_loader();
4277 while(cl != NULL) {
4278 if (cl == loader) return true;
4279 cl = parent(cl);
4280 }
4281 return false;
4282 }
4283
4284 // Return true if this is one of the class loaders associated with
4285 // the generated bytecodes for reflection.
4286 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4287 if (loader != NULL) {
4288 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4289 // This might be null in non-1.4 JDKs
4290 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4291 }
4292 return false;
4293 }
4294
4295 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4296 // See whether this is one of the class loaders associated with
4297 // the generated bytecodes for reflection, and if so, "magically"
4298 // delegate to its parent to prevent class loading from occurring
4299 // in places where applications using reflection didn't expect it.
4300 if (is_reflection_class_loader(loader)) {
4301 return parent(loader);
4302 }
4303 return loader;
4304 }
4305
4306 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4307 assert(is_instance(loader), "loader must be oop");
4308 return loader->obj_field(_unnamedModule_offset);
4309 }
4310
4311 // Support for java_lang_System
4312 //
4313
4314 int java_lang_System::_static_in_offset;
4315 int java_lang_System::_static_out_offset;
4316 int java_lang_System::_static_err_offset;
4317 int java_lang_System::_static_security_offset;
4318
4319 #define SYSTEM_FIELDS_DO(macro) \
4320 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4321 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4322 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4323 macro(_static_security_offset, k, "security", security_manager_signature, true)
4324
4325 void java_lang_System::compute_offsets() {
4326 InstanceKlass* k = SystemDictionary::System_klass();
4327 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4328 }
4329
4330 #if INCLUDE_CDS
4331 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4332 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4333 }
4334 #endif
4335
4336 // Support for jdk_internal_misc_UnsafeConstants
4337 //
4338 class UnsafeConstantsFixup : public FieldClosure {
4339 private:
4340 int _address_size;
4341 int _page_size;
4342 bool _big_endian;
4343 bool _use_unaligned_access;
4344 int _data_cache_line_flush_size;
4345 public:
4346 UnsafeConstantsFixup() {
4347 // round up values for all static final fields
4348 _address_size = sizeof(void*);
4349 _page_size = os::vm_page_size();
4350 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4351 _use_unaligned_access = UseUnalignedAccesses;
4352 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4353 }
4354
4355 void do_field(fieldDescriptor* fd) {
4356 oop mirror = fd->field_holder()->java_mirror();
4357 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4358 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4359 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4360 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4361 if (fd->name() == vmSymbols::address_size_name()) {
4362 mirror->int_field_put(fd->offset(), _address_size);
4363 } else if (fd->name() == vmSymbols::page_size_name()) {
4364 mirror->int_field_put(fd->offset(), _page_size);
4365 } else if (fd->name() == vmSymbols::big_endian_name()) {
4366 mirror->bool_field_put(fd->offset(), _big_endian);
4367 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4368 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4369 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4370 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4371 } else {
4372 assert(false, "unexpected UnsafeConstants field");
4373 }
4374 }
4375 };
4376
4377 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4378 UnsafeConstantsFixup fixup;
4379 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4380 }
4381
4382
4383 // java_lang_StackTraceElement
4384
4385 int java_lang_StackTraceElement::_methodName_offset;
4386 int java_lang_StackTraceElement::_fileName_offset;
4387 int java_lang_StackTraceElement::_lineNumber_offset;
4388 int java_lang_StackTraceElement::_moduleName_offset;
4389 int java_lang_StackTraceElement::_moduleVersion_offset;
4390 int java_lang_StackTraceElement::_classLoaderName_offset;
4391 int java_lang_StackTraceElement::_declaringClass_offset;
4392 int java_lang_StackTraceElement::_declaringClassObject_offset;
4393
4394 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4395 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4396 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4397 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4398 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4399 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4400 macro(_methodName_offset, k, "methodName", string_signature, false); \
4401 macro(_fileName_offset, k, "fileName", string_signature, false); \
4402 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4403
4404 // Support for java_lang_StackTraceElement
4405 void java_lang_StackTraceElement::compute_offsets() {
4406 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4407 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4408 }
4409
4410 #if INCLUDE_CDS
4411 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4412 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4413 }
4414 #endif
4415
4416 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4417 element->obj_field_put(_fileName_offset, value);
4418 }
4419
4420 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4421 element->obj_field_put(_declaringClass_offset, value);
4422 }
4423
4424 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4425 element->obj_field_put(_methodName_offset, value);
4426 }
4427
4428 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4429 element->int_field_put(_lineNumber_offset, value);
4430 }
4431
4432 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4433 element->obj_field_put(_moduleName_offset, value);
4434 }
4435
4436 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4437 element->obj_field_put(_moduleVersion_offset, value);
4438 }
4439
4440 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4441 element->obj_field_put(_classLoaderName_offset, value);
4442 }
4443
4444 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4445 element->obj_field_put(_declaringClassObject_offset, value);
4446 }
4447
4448
4449 // java_lang_AssertionStatusDirectives
4450
4451 int java_lang_AssertionStatusDirectives::_classes_offset;
4452 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4453 int java_lang_AssertionStatusDirectives::_packages_offset;
4454 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4455 int java_lang_AssertionStatusDirectives::_deflt_offset;
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
4499 int java_nio_Buffer::_limit_offset;
4500
4501 #define BUFFER_FIELDS_DO(macro) \
4502 macro(_limit_offset, k, "limit", int_signature, false)
4503
4504 void java_nio_Buffer::compute_offsets() {
4505 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4506 assert(k != NULL, "must be loaded in 1.4+");
4507 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4508 }
4509
4510 #if INCLUDE_CDS
4511 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4512 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4513 }
4514 #endif
4515
4516 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4517
4518 #define AOS_FIELDS_DO(macro) \
4519 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4520
4521 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4522 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4523 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4524 }
4525
4526 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4527 assert(_owner_offset != 0, "Must be initialized");
4528 return obj->obj_field(_owner_offset);
4529 }
4530
4531 #if INCLUDE_CDS
4532 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4533 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4534 }
4535 #endif
4536
4537 int java_lang_Integer_IntegerCache::_static_cache_offset;
4538 int java_lang_Long_LongCache::_static_cache_offset;
4539 int java_lang_Character_CharacterCache::_static_cache_offset;
4540 int java_lang_Short_ShortCache::_static_cache_offset;
4541 int java_lang_Byte_ByteCache::_static_cache_offset;
4542
4543 #define INTEGER_CACHE_FIELDS_DO(macro) \
4544 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4545
4546 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4547 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4548 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4549 }
4550
4551 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4552 oop base = ik->static_field_base_raw();
4553 return objArrayOop(base->obj_field(_static_cache_offset));
4554 }
4555
4556 Symbol* java_lang_Integer_IntegerCache::symbol() {
4557 return vmSymbols::java_lang_Integer_IntegerCache();
4558 }
4559
4560 #if INCLUDE_CDS
4561 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4562 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4563 }
4564 #endif
4565 #undef INTEGER_CACHE_FIELDS_DO
4566
4567 jint java_lang_Integer::value(oop obj) {
4568 jvalue v;
4569 java_lang_boxing_object::get_value(obj, &v);
4570 return v.i;
4571 }
4572
4573 #define LONG_CACHE_FIELDS_DO(macro) \
4574 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4575
4576 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4577 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4578 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4579 }
4580
4581 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4582 oop base = ik->static_field_base_raw();
4583 return objArrayOop(base->obj_field(_static_cache_offset));
4584 }
4585
4586 Symbol* java_lang_Long_LongCache::symbol() {
4587 return vmSymbols::java_lang_Long_LongCache();
4588 }
4589
4590 #if INCLUDE_CDS
4591 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4592 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4593 }
4594 #endif
4595 #undef LONG_CACHE_FIELDS_DO
4596
4597 jlong java_lang_Long::value(oop obj) {
4598 jvalue v;
4599 java_lang_boxing_object::get_value(obj, &v);
4600 return v.j;
4601 }
4602
4603 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4604 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4605
4606 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4607 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4608 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4609 }
4610
4611 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4612 oop base = ik->static_field_base_raw();
4613 return objArrayOop(base->obj_field(_static_cache_offset));
4614 }
4615
4616 Symbol* java_lang_Character_CharacterCache::symbol() {
4617 return vmSymbols::java_lang_Character_CharacterCache();
4618 }
4619
4620 #if INCLUDE_CDS
4621 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4622 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4623 }
4624 #endif
4625 #undef CHARACTER_CACHE_FIELDS_DO
4626
4627 jchar java_lang_Character::value(oop obj) {
4628 jvalue v;
4629 java_lang_boxing_object::get_value(obj, &v);
4630 return v.c;
4631 }
4632
4633 #define SHORT_CACHE_FIELDS_DO(macro) \
4634 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4635
4636 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4637 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4638 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4639 }
4640
4641 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4642 oop base = ik->static_field_base_raw();
4643 return objArrayOop(base->obj_field(_static_cache_offset));
4644 }
4645
4646 Symbol* java_lang_Short_ShortCache::symbol() {
4647 return vmSymbols::java_lang_Short_ShortCache();
4648 }
4649
4650 #if INCLUDE_CDS
4651 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4652 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4653 }
4654 #endif
4655 #undef SHORT_CACHE_FIELDS_DO
4656
4657 jshort java_lang_Short::value(oop obj) {
4658 jvalue v;
4659 java_lang_boxing_object::get_value(obj, &v);
4660 return v.s;
4661 }
4662
4663 #define BYTE_CACHE_FIELDS_DO(macro) \
4664 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4665
4666 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4667 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4668 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4669 }
4670
4671 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4672 oop base = ik->static_field_base_raw();
4673 return objArrayOop(base->obj_field(_static_cache_offset));
4674 }
4675
4676 Symbol* java_lang_Byte_ByteCache::symbol() {
4677 return vmSymbols::java_lang_Byte_ByteCache();
4678 }
4679
4680 #if INCLUDE_CDS
4681 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4682 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4683 }
4684 #endif
4685 #undef BYTE_CACHE_FIELDS_DO
4686
4687 jbyte java_lang_Byte::value(oop obj) {
4688 jvalue v;
4689 java_lang_boxing_object::get_value(obj, &v);
4690 return v.b;
4691 }
4692
4693 int java_lang_Boolean::_static_TRUE_offset;
4694 int java_lang_Boolean::_static_FALSE_offset;
4695
4696 #define BOOLEAN_FIELDS_DO(macro) \
4697 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4698 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4699
4700
4701 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4702 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4703 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4704 }
4705
4706 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4707 oop base = ik->static_field_base_raw();
4708 return base->obj_field(_static_TRUE_offset);
4709 }
4710
4711 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4712 oop base = ik->static_field_base_raw();
4713 return base->obj_field(_static_FALSE_offset);
4714 }
4715
4716 Symbol* java_lang_Boolean::symbol() {
4717 return vmSymbols::java_lang_Boolean();
4718 }
4719
4720 #if INCLUDE_CDS
4721 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4722 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4723 }
4724 #endif
4725 #undef BOOLEAN_CACHE_FIELDS_DO
4726
4727 jboolean java_lang_Boolean::value(oop obj) {
4728 jvalue v;
4729 java_lang_boxing_object::get_value(obj, &v);
4730 return v.z;
4731 }
4732
4733 // java_lang_reflect_RecordComponent
4734
4735 int java_lang_reflect_RecordComponent::_clazz_offset;
4736 int java_lang_reflect_RecordComponent::_name_offset;
4737 int java_lang_reflect_RecordComponent::_type_offset;
4738 int java_lang_reflect_RecordComponent::_accessor_offset;
4739 int java_lang_reflect_RecordComponent::_signature_offset;
4740 int java_lang_reflect_RecordComponent::_annotations_offset;
4741 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4742
4743 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4744 macro(_clazz_offset, k, "clazz", class_signature, false); \
4745 macro(_name_offset, k, "name", string_signature, false); \
4746 macro(_type_offset, k, "type", class_signature, false); \
4747 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4748 macro(_signature_offset, k, "signature", string_signature, false); \
4749 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4750 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4751
4752 // Support for java_lang_reflect_RecordComponent
4753 void java_lang_reflect_RecordComponent::compute_offsets() {
4754 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4755 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4756 }
4757
4758 #if INCLUDE_CDS
4759 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4760 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4761 }
4762 #endif
4763
4764 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4765 element->obj_field_put(_clazz_offset, value);
4766 }
4767
4768 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4769 element->obj_field_put(_name_offset, value);
4770 }
4771
4772 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4773 element->obj_field_put(_type_offset, value);
4774 }
4775
4776 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4777 element->obj_field_put(_accessor_offset, value);
4778 }
4779
4780 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4781 element->obj_field_put(_signature_offset, value);
4782 }
4783
4784 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4785 element->obj_field_put(_annotations_offset, value);
4786 }
4787
4788 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4789 element->obj_field_put(_typeAnnotations_offset, value);
4790 }
4791
4792 // java_lang_InternalError
4793 int java_lang_InternalError::_during_unsafe_access_offset;
4794
4795 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
4796 internal_error->bool_field_put(_during_unsafe_access_offset, true);
4797 }
4798
4799 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
4800 return internal_error->bool_field(_during_unsafe_access_offset);
4801 }
4802
4803 void java_lang_InternalError::compute_offsets() {
4804 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4805 }
4806
4807 #if INCLUDE_CDS
4808 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
4809 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4810 }
4811 #endif
4812
4813 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4814
4815 // Compute field offsets of all the classes in this file
4816 void JavaClasses::compute_offsets() {
4817 if (UseSharedSpaces) {
4818 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4819 JvmtiExport::has_early_class_hook_env()),
4820 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4821 // None of the classes used by the rest of this function can be replaced by
4822 // JVMTI ClassFileLoadHook.
4823 // We are safe to use the archived offsets, which have already been restored
4824 // by JavaClasses::serialize_offsets, without computing the offsets again.
4825 return;
4826 }
4827
4828 // We have already called the compute_offsets() of the
4829 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
4830 // java_lang_ref_Reference) earlier inside SystemDictionary::resolve_well_known_classes()
4831 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4832 }
4833
4834 #if INCLUDE_CDS
4835 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4836
4837 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4838 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4839 }
4840 #endif
4841
4842 #if INCLUDE_CDS_JAVA_HEAP
4843 bool JavaClasses::is_supported_for_archiving(oop obj) {
4844 Klass* klass = obj->klass();
4845
4846 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4847 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4848 // regular Java code. The implementation of java.lang.invoke uses generated anonymous classes
4849 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4850 // So for now we cannot not support these classes for archiving.
4851 //
4852 // These objects typically are not referenced by static fields, but rather by resolved
4853 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4854 klass == SystemDictionary::ResolvedMethodName_klass() ||
4855 klass == SystemDictionary::MemberName_klass() ||
4856 klass == SystemDictionary::Context_klass()) {
4857 return false;
4858 }
4859
4860 return true;
4861 }
4862 #endif
4863
4864 #ifndef PRODUCT
4865
4866 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
4867
4868 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
4869 const char* field_sig) {
4870 EXCEPTION_MARK;
4871 fieldDescriptor fd;
4872 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4873 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4874 InstanceKlass* ik = InstanceKlass::cast(k);
4875 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4876 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4877 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4878 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4879 return false;
4880 }
4881 if (fd.is_static()) {
4882 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4883 return false;
4884 }
4885 if (fd.offset() == deserialized_offset ) {
4886 return true;
4887 } else {
4888 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
4889 klass_name, field_name, deserialized_offset, fd.offset());
4890 return false;
4891 }
4892 }
4893
4894 void JavaClasses::check_offsets() {
4895 bool valid = true;
4896
4897 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4898 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
4899
4900 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4901 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
4902
4903 // Boxed primitive objects (java_lang_boxing_object)
4904
4905 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4906 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4907 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4908 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4909 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4910 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4911 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4912 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4913
4914 if (!valid) vm_exit_during_initialization("Field offset verification failed");
4915 }
4916
4917 #endif // PRODUCT
4918
4919 int InjectedField::compute_offset() {
4920 InstanceKlass* ik = InstanceKlass::cast(klass());
4921 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4922 if (!may_be_java && !fs.access_flags().is_internal()) {
4923 // Only look at injected fields
4924 continue;
4925 }
4926 if (fs.name() == name() && fs.signature() == signature()) {
4927 return fs.offset();
4928 }
4929 }
4930 ResourceMark rm;
4931 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)" : "");
4932 #ifndef PRODUCT
4933 ik->print();
4934 tty->print_cr("all fields:");
4935 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4936 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4937 }
4938 #endif //PRODUCT
4939 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4940 return -1;
4941 }
4942
4943 void javaClasses_init() {
4944 JavaClasses::compute_offsets();
4945 JavaClasses::check_offsets();
4946 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4947 }