1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/classLoaderData.inline.hpp"
28 #include "classfile/javaClasses.inline.hpp"
29 #include "classfile/moduleEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "code/debugInfo.hpp"
34 #include "code/dependencyContext.hpp"
35 #include "code/pcDesc.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "logging/log.hpp"
39 #include "logging/logStream.hpp"
40 #include "memory/heapShared.inline.hpp"
41 #include "memory/metaspaceShared.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "oops/fieldStreams.inline.hpp"
46 #include "oops/instanceKlass.hpp"
47 #include "oops/instanceMirrorKlass.hpp"
48 #include "oops/klass.hpp"
49 #include "oops/method.inline.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/symbol.hpp"
53 #include "oops/recordComponent.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/resolvedMethodTable.hpp"
57 #include "runtime/fieldDescriptor.inline.hpp"
58 #include "runtime/frame.inline.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/init.hpp"
61 #include "runtime/interfaceSupport.inline.hpp"
62 #include "runtime/java.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/safepoint.hpp"
66 #include "runtime/safepointVerifiers.hpp"
67 #include "runtime/thread.inline.hpp"
68 #include "runtime/vframe.inline.hpp"
69 #include "runtime/vm_version.hpp"
70 #include "utilities/align.hpp"
71 #include "utilities/preserveException.hpp"
72 #include "utilities/utf8.hpp"
73 #if INCLUDE_JVMCI
74 #include "jvmci/jvmciJavaClasses.hpp"
75 #endif
76
77 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
78 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
79
80 #if INCLUDE_CDS
81 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
82 f->do_u4((u4*)&_##name##_offset);
83 #endif
84
85 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
86 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
87
88 InjectedField JavaClasses::_injected_fields[] = {
89 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
90 };
91
92 // Register native methods of Object
93 void java_lang_Object::register_natives(TRAPS) {
94 InstanceKlass* obj = SystemDictionary::Object_klass();
95 Method::register_native(obj, vmSymbols::hashCode_name(),
96 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
97 Method::register_native(obj, vmSymbols::wait_name(),
98 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
99 Method::register_native(obj, vmSymbols::notify_name(),
100 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
101 Method::register_native(obj, vmSymbols::notifyAll_name(),
102 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
103 Method::register_native(obj, vmSymbols::clone_name(),
104 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
105 }
106
107 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
108 return _injected_fields[id].compute_offset();
109 }
110
111 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
112 *field_count = 0;
113
114 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
115 if (sid == vmSymbols::NO_SID) {
116 // Only well known classes can inject fields
117 return NULL;
118 }
119
120 int count = 0;
121 int start = -1;
122
123 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
124 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
125 count++; \
126 if (start == -1) start = klass##_##name##_enum; \
127 }
128 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
129 #undef LOOKUP_INJECTED_FIELD
130
131 if (start != -1) {
132 *field_count = count;
133 return _injected_fields + start;
134 }
135 return NULL;
136 }
137
138
139 // Helpful routine for computing field offsets at run time rather than hardcoding them
140 // Finds local fields only, including static fields. Static field offsets are from the
141 // beginning of the mirror.
142 static void compute_offset(int &dest_offset,
143 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
144 bool is_static = false) {
145 fieldDescriptor fd;
146 if (ik == NULL) {
147 ResourceMark rm;
148 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
149 vm_exit_during_initialization("Invalid layout of well-known class");
150 }
151
152 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
153 ResourceMark rm;
154 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
155 name_symbol->as_C_string(), signature_symbol->as_C_string());
156 #ifndef PRODUCT
157 // Prints all fields and offsets
158 Log(class) lt;
159 LogStream ls(lt.error());
160 ik->print_on(&ls);
161 #endif //PRODUCT
162 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
163 }
164 dest_offset = fd.offset();
165 }
166
167 // Overloading to pass name as a string.
168 static void compute_offset(int& dest_offset, InstanceKlass* ik,
169 const char* name_string, Symbol* signature_symbol,
170 bool is_static = false) {
171 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
172 if (name == NULL) {
173 ResourceMark rm;
174 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
175 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
176 }
177 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
178 }
179
180
181 #if INCLUDE_CDS
182 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
183 f->do_u4((u4*)&offset)
184 #endif
185
186 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
187 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
188
189
190 // java_lang_String
191
192 int java_lang_String::_value_offset;
193 int java_lang_String::_hash_offset;
194 int java_lang_String::_hashIsZero_offset;
195 int java_lang_String::_coder_offset;
196
197 bool java_lang_String::_initialized;
198
199 bool java_lang_String::is_instance(oop obj) {
200 return is_instance_inlined(obj);
201 }
202
203 #define STRING_FIELDS_DO(macro) \
204 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
205 macro(_hash_offset, k, "hash", int_signature, false); \
206 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
207 macro(_coder_offset, k, "coder", byte_signature, false);
208
209 void java_lang_String::compute_offsets() {
210 if (_initialized) {
211 return;
212 }
213
214 InstanceKlass* k = SystemDictionary::String_klass();
215 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
216
217 _initialized = true;
218 }
219
220 #if INCLUDE_CDS
221 void java_lang_String::serialize_offsets(SerializeClosure* f) {
222 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
223 f->do_bool(&_initialized);
224 }
225 #endif
226
227 class CompactStringsFixup : public FieldClosure {
228 private:
229 bool _value;
230
231 public:
232 CompactStringsFixup(bool value) : _value(value) {}
233
234 void do_field(fieldDescriptor* fd) {
235 if (fd->name() == vmSymbols::compact_strings_name()) {
236 oop mirror = fd->field_holder()->java_mirror();
237 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
238 assert(mirror != NULL, "String must have mirror already");
239 mirror->bool_field_put(fd->offset(), _value);
240 }
241 }
242 };
243
244 void java_lang_String::set_compact_strings(bool value) {
245 CompactStringsFixup fix(value);
246 SystemDictionary::String_klass()->do_local_static_fields(&fix);
247 }
248
249 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
250 assert(_initialized, "Must be initialized");
251 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
252
253 // Create the String object first, so there's a chance that the String
254 // and the char array it points to end up in the same cache line.
255 oop obj;
256 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
257
258 // Create the char array. The String object must be handlized here
259 // because GC can happen as a result of the allocation attempt.
260 Handle h_obj(THREAD, obj);
261 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
262 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
263
264 // Point the String at the char array
265 obj = h_obj();
266 set_value(obj, buffer);
267 // No need to zero the offset, allocation zero'ed the entire String object
268 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
269 return h_obj;
270 }
271
272 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
273 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
274 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
275 typeArrayOop buffer = value(h_obj());
276 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
277 if (is_latin1) {
278 for (int index = 0; index < length; index++) {
279 buffer->byte_at_put(index, (jbyte)unicode[index]);
280 }
281 } else {
282 for (int index = 0; index < length; index++) {
283 buffer->char_at_put(index, unicode[index]);
284 }
285 }
286
287 #ifdef ASSERT
288 {
289 ResourceMark rm;
290 char* expected = UNICODE::as_utf8(unicode, length);
291 char* actual = as_utf8_string(h_obj());
292 if (strcmp(expected, actual) != 0) {
293 fatal("Unicode conversion failure: %s --> %s", expected, actual);
294 }
295 }
296 #endif
297
298 return h_obj;
299 }
300
301 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
302 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
303 return h_obj();
304 }
305
306 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
307 if (utf8_str == NULL) {
308 return Handle();
309 }
310 bool has_multibyte, is_latin1;
311 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
312 if (!CompactStrings) {
313 has_multibyte = true;
314 is_latin1 = false;
315 }
316
317 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
318 if (length > 0) {
319 if (!has_multibyte) {
320 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
321 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
322 } else if (is_latin1) {
323 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
324 } else {
325 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
326 }
327 }
328
329 #ifdef ASSERT
330 // This check is too strict when the input string is not a valid UTF8.
331 // For example, it may be created with arbitrary content via jni_NewStringUTF.
332 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
333 ResourceMark rm;
334 const char* expected = utf8_str;
335 char* actual = as_utf8_string(h_obj());
336 if (strcmp(expected, actual) != 0) {
337 fatal("String conversion failure: %s --> %s", expected, actual);
338 }
339 }
340 #endif
341
342 return h_obj;
343 }
344
345 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
346 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
347 return h_obj();
348 }
349
350 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
351 const char* utf8_str = (char*)symbol->bytes();
352 int utf8_len = symbol->utf8_length();
353
354 bool has_multibyte, is_latin1;
355 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
356 if (!CompactStrings) {
357 has_multibyte = true;
358 is_latin1 = false;
359 }
360
361 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
362 if (length > 0) {
363 if (!has_multibyte) {
364 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
365 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
366 } else if (is_latin1) {
367 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
368 } else {
369 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
370 }
371 }
372
373 #ifdef ASSERT
374 {
375 ResourceMark rm;
376 const char* expected = symbol->as_utf8();
377 char* actual = as_utf8_string(h_obj());
378 if (strncmp(expected, actual, utf8_len) != 0) {
379 fatal("Symbol conversion failure: %s --> %s", expected, actual);
380 }
381 }
382 #endif
383
384 return h_obj;
385 }
386
387 // Converts a C string to a Java String based on current encoding
388 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
389 assert(str != NULL, "bad arguments");
390
391 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
392 static to_java_string_fn_t _to_java_string_fn = NULL;
393
394 if (_to_java_string_fn == NULL) {
395 void *lib_handle = os::native_java_library();
396 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
397 #if defined(_WIN32) && !defined(_WIN64)
398 if (_to_java_string_fn == NULL) {
399 // On 32 bit Windows, also try __stdcall decorated name
400 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
401 }
402 #endif
403 if (_to_java_string_fn == NULL) {
404 fatal("JNU_NewStringPlatform missing");
405 }
406 }
407
408 jstring js = NULL;
409 {
410 assert(THREAD->is_Java_thread(), "must be java thread");
411 JavaThread* thread = (JavaThread*)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 = (JavaThread*)THREAD;
438 assert(thread->is_Java_thread(), "must be java thread");
439 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
440 bool is_copy;
441 HandleMark hm(thread);
442 ThreadToNativeFromVM ttn(thread);
443 JNIEnv *env = thread->jni_environment();
444 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
445 assert(is_copy == JNI_TRUE, "is_copy value changed");
446 JNIHandles::destroy_local(js);
447 }
448 return native_platform_string;
449 }
450
451 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
452 oop obj = java_string();
453 // Typical usage is to convert all '/' to '.' in string.
454 typeArrayOop value = java_lang_String::value(obj);
455 int length = java_lang_String::length(obj, value);
456 bool is_latin1 = java_lang_String::is_latin1(obj);
457
458 // First check if any from_char exist
459 int index; // Declared outside, used later
460 for (index = 0; index < length; index++) {
461 jchar c = !is_latin1 ? value->char_at(index) :
462 ((jchar) value->byte_at(index)) & 0xff;
463 if (c == from_char) {
464 break;
465 }
466 }
467 if (index == length) {
468 // No from_char, so do not copy.
469 return java_string;
470 }
471
472 // Check if result string will be latin1
473 bool to_is_latin1 = false;
474
475 // Replacement char must be latin1
476 if (CompactStrings && UNICODE::is_latin1(to_char)) {
477 if (is_latin1) {
478 // Source string is latin1 as well
479 to_is_latin1 = true;
480 } else if (!UNICODE::is_latin1(from_char)) {
481 // We are replacing an UTF16 char. Scan string to
482 // check if result can be latin1 encoded.
483 to_is_latin1 = true;
484 for (index = 0; index < length; index++) {
485 jchar c = value->char_at(index);
486 if (c != from_char && !UNICODE::is_latin1(c)) {
487 to_is_latin1 = false;
488 break;
489 }
490 }
491 }
492 }
493
494 // Create new UNICODE (or byte) buffer. Must handlize value because GC
495 // may happen during String and char array creation.
496 typeArrayHandle h_value(THREAD, value);
497 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
498 typeArrayOop from_buffer = h_value();
499 typeArrayOop to_buffer = java_lang_String::value(string());
500
501 // Copy contents
502 for (index = 0; index < length; index++) {
503 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
504 ((jchar) from_buffer->byte_at(index)) & 0xff;
505 if (c == from_char) {
506 c = to_char;
507 }
508 if (!to_is_latin1) {
509 to_buffer->char_at_put(index, c);
510 } else {
511 to_buffer->byte_at_put(index, (jbyte) c);
512 }
513 }
514 return string;
515 }
516
517 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
518 typeArrayOop value = java_lang_String::value(java_string);
519 length = java_lang_String::length(java_string, value);
520 bool is_latin1 = java_lang_String::is_latin1(java_string);
521
522 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
523 if (result != NULL) {
524 if (!is_latin1) {
525 for (int index = 0; index < length; index++) {
526 result[index] = value->char_at(index);
527 }
528 } else {
529 for (int index = 0; index < length; index++) {
530 result[index] = ((jchar) value->byte_at(index)) & 0xff;
531 }
532 }
533 } else {
534 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
535 }
536 return result;
537 }
538
539 unsigned int java_lang_String::hash_code(oop java_string) {
540 // The hash and hashIsZero fields are subject to a benign data race,
541 // making it crucial to ensure that any observable result of the
542 // calculation in this method stays correct under any possible read of
543 // these fields. Necessary restrictions to allow this to be correct
544 // without explicit memory fences or similar concurrency primitives is
545 // that we can ever only write to one of these two fields for a given
546 // String instance, and that the computation is idempotent and derived
547 // from immutable state
548 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
549 if (java_lang_String::hash_is_set(java_string)) {
550 return java_string->int_field(_hash_offset);
551 }
552
553 typeArrayOop value = java_lang_String::value(java_string);
554 int length = java_lang_String::length(java_string, value);
555 bool is_latin1 = java_lang_String::is_latin1(java_string);
556
557 unsigned int hash = 0;
558 if (length > 0) {
559 if (is_latin1) {
560 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
561 } else {
562 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
563 }
564 }
565
566 if (hash != 0) {
567 java_string->int_field_put(_hash_offset, hash);
568 } else {
569 java_string->bool_field_put(_hashIsZero_offset, true);
570 }
571 return hash;
572 }
573
574 char* java_lang_String::as_quoted_ascii(oop java_string) {
575 typeArrayOop value = java_lang_String::value(java_string);
576 int length = java_lang_String::length(java_string, value);
577 bool is_latin1 = java_lang_String::is_latin1(java_string);
578
579 if (length == 0) return NULL;
580
581 char* result;
582 int result_length;
583 if (!is_latin1) {
584 jchar* base = value->char_at_addr(0);
585 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
586 result = NEW_RESOURCE_ARRAY(char, result_length);
587 UNICODE::as_quoted_ascii(base, length, result, result_length);
588 } else {
589 jbyte* base = value->byte_at_addr(0);
590 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
591 result = NEW_RESOURCE_ARRAY(char, result_length);
592 UNICODE::as_quoted_ascii(base, length, result, result_length);
593 }
594 assert(result_length >= length + 1, "must not be shorter");
595 assert(result_length == (int)strlen(result) + 1, "must match");
596 return result;
597 }
598
599 Symbol* java_lang_String::as_symbol(oop java_string) {
600 typeArrayOop value = java_lang_String::value(java_string);
601 int length = java_lang_String::length(java_string, value);
602 bool is_latin1 = java_lang_String::is_latin1(java_string);
603 if (!is_latin1) {
604 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
605 Symbol* sym = SymbolTable::new_symbol(base, length);
606 return sym;
607 } else {
608 ResourceMark rm;
609 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
610 const char* base = UNICODE::as_utf8(position, length);
611 Symbol* sym = SymbolTable::new_symbol(base, length);
612 return sym;
613 }
614 }
615
616 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
617 typeArrayOop value = java_lang_String::value(java_string);
618 int length = java_lang_String::length(java_string, value);
619 bool is_latin1 = java_lang_String::is_latin1(java_string);
620 if (!is_latin1) {
621 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
622 return SymbolTable::probe_unicode(base, length);
623 } else {
624 ResourceMark rm;
625 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
626 const char* base = UNICODE::as_utf8(position, length);
627 return SymbolTable::probe(base, length);
628 }
629 }
630
631 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
632 assert(value_equals(value, java_lang_String::value(java_string)),
633 "value must be same as java_lang_String::value(java_string)");
634 int length = java_lang_String::length(java_string, value);
635 if (length == 0) {
636 return 0;
637 }
638 if (!java_lang_String::is_latin1(java_string)) {
639 return UNICODE::utf8_length(value->char_at_addr(0), length);
640 } else {
641 return UNICODE::utf8_length(value->byte_at_addr(0), length);
642 }
643 }
644
645 int java_lang_String::utf8_length(oop java_string) {
646 typeArrayOop value = java_lang_String::value(java_string);
647 return utf8_length(java_string, value);
648 }
649
650 char* java_lang_String::as_utf8_string(oop java_string) {
651 int length;
652 return as_utf8_string(java_string, length);
653 }
654
655 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
656 typeArrayOop value = java_lang_String::value(java_string);
657 length = java_lang_String::length(java_string, value);
658 bool is_latin1 = java_lang_String::is_latin1(java_string);
659 if (!is_latin1) {
660 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
661 return UNICODE::as_utf8(position, length);
662 } else {
663 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
664 return UNICODE::as_utf8(position, length);
665 }
666 }
667
668 // Uses a provided buffer if it's sufficiently large, otherwise allocates
669 // a resource array to fit
670 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
671 typeArrayOop value = java_lang_String::value(java_string);
672 int len = java_lang_String::length(java_string, value);
673 bool is_latin1 = java_lang_String::is_latin1(java_string);
674 if (!is_latin1) {
675 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
676 utf8_len = UNICODE::utf8_length(position, len);
677 if (utf8_len >= buflen) {
678 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
679 }
680 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
681 } else {
682 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
683 utf8_len = UNICODE::utf8_length(position, len);
684 if (utf8_len >= buflen) {
685 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
686 }
687 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
688 }
689 }
690
691 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
692 assert(value_equals(value, java_lang_String::value(java_string)),
693 "value must be same as java_lang_String::value(java_string)");
694 int length = java_lang_String::length(java_string, value);
695 bool is_latin1 = java_lang_String::is_latin1(java_string);
696 if (!is_latin1) {
697 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
698 return UNICODE::as_utf8(position, length, buf, buflen);
699 } else {
700 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
701 return UNICODE::as_utf8(position, length, buf, buflen);
702 }
703 }
704
705 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
706 typeArrayOop value = java_lang_String::value(java_string);
707 return as_utf8_string(java_string, value, buf, buflen);
708 }
709
710 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
711 typeArrayOop value = java_lang_String::value(java_string);
712 bool is_latin1 = java_lang_String::is_latin1(java_string);
713 assert(start + len <= java_lang_String::length(java_string), "just checking");
714 if (!is_latin1) {
715 jchar* position = value->char_at_addr(start);
716 return UNICODE::as_utf8(position, len);
717 } else {
718 jbyte* position = value->byte_at_addr(start);
719 return UNICODE::as_utf8(position, len);
720 }
721 }
722
723 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
724 assert(value_equals(value, java_lang_String::value(java_string)),
725 "value must be same as java_lang_String::value(java_string)");
726 assert(start + len <= java_lang_String::length(java_string), "just checking");
727 bool is_latin1 = java_lang_String::is_latin1(java_string);
728 if (!is_latin1) {
729 jchar* position = value->char_at_addr(start);
730 return UNICODE::as_utf8(position, len, buf, buflen);
731 } else {
732 jbyte* position = value->byte_at_addr(start);
733 return UNICODE::as_utf8(position, len, buf, buflen);
734 }
735 }
736
737 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
738 assert(java_string->klass() == SystemDictionary::String_klass(),
739 "must be java_string");
740 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
741 int length = java_lang_String::length(java_string, value);
742 if (length != len) {
743 return false;
744 }
745 bool is_latin1 = java_lang_String::is_latin1(java_string);
746 if (!is_latin1) {
747 for (int i = 0; i < len; i++) {
748 if (value->char_at(i) != chars[i]) {
749 return false;
750 }
751 }
752 } else {
753 for (int i = 0; i < len; i++) {
754 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
755 return false;
756 }
757 }
758 }
759 return true;
760 }
761
762 bool java_lang_String::equals(oop str1, oop str2) {
763 assert(str1->klass() == SystemDictionary::String_klass(),
764 "must be java String");
765 assert(str2->klass() == SystemDictionary::String_klass(),
766 "must be java String");
767 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
768 bool is_latin1 = java_lang_String::is_latin1(str1);
769 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
770 bool is_latin2 = java_lang_String::is_latin1(str2);
771
772 if (is_latin1 != is_latin2) {
773 // Strings with different coders are never equal.
774 return false;
775 }
776 return value_equals(value1, value2);
777 }
778
779 void java_lang_String::print(oop java_string, outputStream* st) {
780 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
781 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
782
783 if (value == NULL) {
784 // This can happen if, e.g., printing a String
785 // object before its initializer has been called
786 st->print("NULL");
787 return;
788 }
789
790 int length = java_lang_String::length(java_string, value);
791 bool is_latin1 = java_lang_String::is_latin1(java_string);
792
793 st->print("\"");
794 for (int index = 0; index < length; index++) {
795 st->print("%c", (!is_latin1) ? value->char_at(index) :
796 ((jchar) value->byte_at(index)) & 0xff );
797 }
798 st->print("\"");
799 }
800
801 // java_lang_Class
802
803 int java_lang_Class::_klass_offset;
804 int java_lang_Class::_array_klass_offset;
805 int java_lang_Class::_oop_size_offset;
806 int java_lang_Class::_static_oop_field_count_offset;
807 int java_lang_Class::_class_loader_offset;
808 int java_lang_Class::_module_offset;
809 int java_lang_Class::_protection_domain_offset;
810 int java_lang_Class::_component_mirror_offset;
811 int java_lang_Class::_init_lock_offset;
812 int java_lang_Class::_signers_offset;
813 int java_lang_Class::_name_offset;
814 int java_lang_Class::_source_file_offset;
815 int java_lang_Class::_classData_offset;
816 int java_lang_Class::_classRedefinedCount_offset;
817
818 bool java_lang_Class::_offsets_computed = false;
819 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
820 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
821
822 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
823 assert(mirror.not_null() && fd->is_static(), "just checking");
824 if (fd->has_initial_value()) {
825 BasicType t = fd->field_type();
826 switch (t) {
827 case T_BYTE:
828 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
829 break;
830 case T_BOOLEAN:
831 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
832 break;
833 case T_CHAR:
834 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
835 break;
836 case T_SHORT:
837 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
838 break;
839 case T_INT:
840 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
841 break;
842 case T_FLOAT:
843 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
844 break;
845 case T_DOUBLE:
846 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
847 break;
848 case T_LONG:
849 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
850 break;
851 case T_OBJECT:
852 {
853 assert(fd->signature() == vmSymbols::string_signature(),
854 "just checking");
855 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
856 // Archive the String field and update the pointer.
857 oop s = mirror()->obj_field(fd->offset());
858 oop archived_s = StringTable::create_archived_string(s, CHECK);
859 mirror()->obj_field_put(fd->offset(), archived_s);
860 } else {
861 oop string = fd->string_initial_value(CHECK);
862 mirror()->obj_field_put(fd->offset(), string);
863 }
864 }
865 break;
866 default:
867 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
868 "Illegal ConstantValue attribute in class file");
869 }
870 }
871 }
872
873
874 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
875 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
876
877 // If the offset was read from the shared archive, it was fixed up already
878 if (!k->is_shared()) {
879 if (k->is_instance_klass()) {
880 // During bootstrap, java.lang.Class wasn't loaded so static field
881 // offsets were computed without the size added it. Go back and
882 // update all the static field offsets to included the size.
883 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
884 if (fs.access_flags().is_static()) {
885 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
886 fs.set_offset(real_offset);
887 }
888 }
889 }
890 }
891
892 if (k->is_shared() && k->has_raw_archived_mirror()) {
893 if (HeapShared::open_archive_heap_region_mapped()) {
894 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
895 assert(present, "Missing archived mirror for %s", k->external_name());
896 return;
897 } else {
898 k->clear_java_mirror_handle();
899 k->clear_has_raw_archived_mirror();
900 }
901 }
902 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
903 }
904
905 void java_lang_Class::initialize_mirror_fields(Klass* k,
906 Handle mirror,
907 Handle protection_domain,
908 Handle classData,
909 TRAPS) {
910 // Allocate a simple java object for a lock.
911 // This needs to be a java object because during class initialization
912 // it can be held across a java call.
913 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
914 set_init_lock(mirror(), r);
915
916 // Set protection domain also
917 set_protection_domain(mirror(), protection_domain());
918
919 // Initialize static fields
920 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
921
922 // Set classData
923 set_class_data(mirror(), classData());
924 }
925
926 // Set the java.lang.Module module field in the java_lang_Class mirror
927 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
928 if (module.is_null()) {
929 // During startup, the module may be NULL only if java.base has not been defined yet.
930 // Put the class on the fixup_module_list to patch later when the java.lang.Module
931 // for java.base is known. But note that since we captured the NULL module another
932 // thread may have completed that initialization.
933
934 bool javabase_was_defined = false;
935 {
936 MutexLocker m1(THREAD, Module_lock);
937 // Keep list of classes needing java.base module fixup
938 if (!ModuleEntryTable::javabase_defined()) {
939 assert(k->java_mirror() != NULL, "Class's mirror is null");
940 k->class_loader_data()->inc_keep_alive();
941 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
942 fixup_module_field_list()->push(k);
943 } else {
944 javabase_was_defined = true;
945 }
946 }
947
948 // If java.base was already defined then patch this particular class with java.base.
949 if (javabase_was_defined) {
950 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
951 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
952 "Setting class module field, " JAVA_BASE_NAME " should be defined");
953 Handle javabase_handle(THREAD, javabase_entry->module());
954 set_module(mirror(), javabase_handle());
955 }
956 } else {
957 assert(Universe::is_module_initialized() ||
958 (ModuleEntryTable::javabase_defined() &&
959 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
960 "Incorrect java.lang.Module specification while creating mirror");
961 set_module(mirror(), module());
962 }
963 }
964
965 // Statically allocate fixup lists because they always get created.
966 void java_lang_Class::allocate_fixup_lists() {
967 GrowableArray<Klass*>* mirror_list =
968 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
969 set_fixup_mirror_list(mirror_list);
970
971 GrowableArray<Klass*>* module_list =
972 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
973 set_fixup_module_field_list(module_list);
974 }
975
976 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
977 Handle module, Handle protection_domain,
978 Handle classData, TRAPS) {
979 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
980 assert(k->java_mirror() == NULL, "should only assign mirror once");
981
982 // Use this moment of initialization to cache modifier_flags also,
983 // to support Class.getModifiers(). Instance classes recalculate
984 // the cached flags after the class file is parsed, but before the
985 // class is put into the system dictionary.
986 int computed_modifiers = k->compute_modifier_flags(CHECK);
987 k->set_modifier_flags(computed_modifiers);
988 // Class_klass has to be loaded because it is used to allocate
989 // the mirror.
990 if (SystemDictionary::Class_klass_loaded()) {
991 // Allocate mirror (java.lang.Class instance)
992 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
993 Handle mirror(THREAD, mirror_oop);
994 Handle comp_mirror;
995
996 // Setup indirection from mirror->klass
997 java_lang_Class::set_klass(mirror(), k);
998
999 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1000 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1001
1002 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1003
1004 // It might also have a component mirror. This mirror must already exist.
1005 if (k->is_array_klass()) {
1006 if (k->is_typeArray_klass()) {
1007 BasicType type = TypeArrayKlass::cast(k)->element_type();
1008 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1009 } else {
1010 assert(k->is_objArray_klass(), "Must be");
1011 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1012 assert(element_klass != NULL, "Must have an element klass");
1013 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1014 }
1015 assert(comp_mirror() != NULL, "must have a mirror");
1016
1017 // Two-way link between the array klass and its component mirror:
1018 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1019 set_component_mirror(mirror(), comp_mirror());
1020 // See below for ordering dependencies between field array_klass in component mirror
1021 // and java_mirror in this klass.
1022 } else {
1023 assert(k->is_instance_klass(), "Must be");
1024
1025 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1026 if (HAS_PENDING_EXCEPTION) {
1027 // If any of the fields throws an exception like OOM remove the klass field
1028 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1029 // This mirror looks like a primitive type, which logically it is because it
1030 // it represents no class.
1031 java_lang_Class::set_klass(mirror(), NULL);
1032 return;
1033 }
1034 }
1035
1036 // set the classLoader field in the java_lang_Class instance
1037 assert(class_loader() == k->class_loader(), "should be same");
1038 set_class_loader(mirror(), class_loader());
1039
1040 // Setup indirection from klass->mirror
1041 // after any exceptions can happen during allocations.
1042 k->set_java_mirror(mirror);
1043
1044 // Set the module field in the java_lang_Class instance. This must be done
1045 // after the mirror is set.
1046 set_mirror_module_field(k, mirror, module, THREAD);
1047
1048 if (comp_mirror() != NULL) {
1049 // Set after k->java_mirror() is published, because compiled code running
1050 // concurrently doesn't expect a k to have a null java_mirror.
1051 release_set_array_klass(comp_mirror(), k);
1052 }
1053 } else {
1054 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1055 fixup_mirror_list()->push(k);
1056 }
1057 }
1058
1059 #if INCLUDE_CDS_JAVA_HEAP
1060 // Clears mirror fields. Static final fields with initial values are reloaded
1061 // from constant pool. The object identity hash is in the object header and is
1062 // not affected.
1063 class ResetMirrorField: public FieldClosure {
1064 private:
1065 Handle _m;
1066
1067 public:
1068 ResetMirrorField(Handle mirror) : _m(mirror) {}
1069
1070 void do_field(fieldDescriptor* fd) {
1071 assert(DumpSharedSpaces, "dump time only");
1072 assert(_m.not_null(), "Mirror cannot be NULL");
1073
1074 if (fd->is_static() && fd->has_initial_value()) {
1075 initialize_static_field(fd, _m, Thread::current());
1076 return;
1077 }
1078
1079 BasicType ft = fd->field_type();
1080 switch (ft) {
1081 case T_BYTE:
1082 _m()->byte_field_put(fd->offset(), 0);
1083 break;
1084 case T_CHAR:
1085 _m()->char_field_put(fd->offset(), 0);
1086 break;
1087 case T_DOUBLE:
1088 _m()->double_field_put(fd->offset(), 0);
1089 break;
1090 case T_FLOAT:
1091 _m()->float_field_put(fd->offset(), 0);
1092 break;
1093 case T_INT:
1094 _m()->int_field_put(fd->offset(), 0);
1095 break;
1096 case T_LONG:
1097 _m()->long_field_put(fd->offset(), 0);
1098 break;
1099 case T_SHORT:
1100 _m()->short_field_put(fd->offset(), 0);
1101 break;
1102 case T_BOOLEAN:
1103 _m()->bool_field_put(fd->offset(), false);
1104 break;
1105 case T_ARRAY:
1106 case T_OBJECT: {
1107 // It might be useful to cache the String field, but
1108 // for now just clear out any reference field
1109 oop o = _m()->obj_field(fd->offset());
1110 _m()->obj_field_put(fd->offset(), NULL);
1111 break;
1112 }
1113 default:
1114 ShouldNotReachHere();
1115 break;
1116 }
1117 }
1118 };
1119
1120 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1121 assert(HeapShared::is_heap_object_archiving_allowed(),
1122 "HeapShared::is_heap_object_archiving_allowed() must be true");
1123
1124 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1125 BasicType bt = (BasicType)t;
1126 oop m = Universe::_mirrors[t].resolve();
1127 if (m != NULL) {
1128 // Update the field at _array_klass_offset to point to the relocated array klass.
1129 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1130 assert(archived_m != NULL, "sanity");
1131 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1132 assert(ak != NULL || t == T_VOID, "should not be NULL");
1133 if (ak != NULL) {
1134 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1135 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1136 }
1137
1138 // Clear the fields. Just to be safe
1139 Klass *k = m->klass();
1140 Handle archived_mirror_h(THREAD, archived_m);
1141 ResetMirrorField reset(archived_mirror_h);
1142 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1143
1144 log_trace(cds, heap, mirror)(
1145 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1146 type2name(bt), p2i(m), p2i(archived_m));
1147
1148 Universe::replace_mirror(bt, archived_m);
1149 }
1150 }
1151 }
1152 //
1153 // After the mirror object is successfully archived, the archived
1154 // klass is set with _has_archived_raw_mirror flag.
1155 //
1156 // The _has_archived_raw_mirror flag is cleared at runtime when the
1157 // archived mirror is restored. If archived java heap data cannot
1158 // be used at runtime, new mirror object is created for the shared
1159 // class. The _has_archived_raw_mirror is cleared also during the process.
1160 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1161 assert(HeapShared::is_heap_object_archiving_allowed(),
1162 "HeapShared::is_heap_object_archiving_allowed() must be true");
1163
1164 // Mirror is already archived
1165 if (k->has_raw_archived_mirror()) {
1166 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1167 return k->archived_java_mirror_raw();
1168 }
1169
1170 // No mirror
1171 oop mirror = k->java_mirror();
1172 if (mirror == NULL) {
1173 return NULL;
1174 }
1175
1176 if (k->is_instance_klass()) {
1177 InstanceKlass *ik = InstanceKlass::cast(k);
1178 assert(ik->signers() == NULL, "class with signer should have been excluded");
1179
1180 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1181 ik->is_shared_app_class())) {
1182 // Archiving mirror for classes from non-builtin loaders is not
1183 // supported. Clear the _java_mirror within the archived class.
1184 k->clear_java_mirror_handle();
1185 return NULL;
1186 }
1187 }
1188
1189 // Now start archiving the mirror object
1190 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1191 if (archived_mirror == NULL) {
1192 return NULL;
1193 }
1194
1195 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1196 if (archived_mirror == NULL) {
1197 return NULL;
1198 }
1199
1200 k->set_archived_java_mirror_raw(archived_mirror);
1201
1202 k->set_has_raw_archived_mirror();
1203
1204 ResourceMark rm;
1205 log_trace(cds, heap, mirror)(
1206 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1207 k->external_name(), p2i(mirror), p2i(archived_mirror));
1208
1209 return archived_mirror;
1210 }
1211
1212 // The process is based on create_mirror().
1213 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1214 oop archived_mirror,
1215 Thread *THREAD) {
1216 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1217 // to archived metadata and objects below.
1218 Klass *c = archived_mirror->klass();
1219 Handle archived_mirror_h(THREAD, archived_mirror);
1220 ResetMirrorField reset(archived_mirror_h);
1221 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1222
1223 if (k->is_array_klass()) {
1224 oop archived_comp_mirror;
1225 if (k->is_typeArray_klass()) {
1226 // The primitive type mirrors are already archived. Get the archived mirror.
1227 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1228 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1229 assert(archived_comp_mirror != NULL, "Must be");
1230 } else {
1231 assert(k->is_objArray_klass(), "Must be");
1232 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1233 assert(element_klass != NULL, "Must have an element klass");
1234 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1235 if (archived_comp_mirror == NULL) {
1236 return NULL;
1237 }
1238 }
1239 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1240 } else {
1241 assert(k->is_instance_klass(), "Must be");
1242
1243 // Reset local static fields in the mirror
1244 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1245
1246 java_lang_Class:set_init_lock(archived_mirror, NULL);
1247
1248 set_protection_domain(archived_mirror, NULL);
1249 }
1250
1251 // clear class loader and mirror_module_field
1252 set_class_loader(archived_mirror, NULL);
1253 set_module(archived_mirror, NULL);
1254
1255 // The archived mirror's field at _klass_offset is still pointing to the original
1256 // klass. Updated the field in the archived mirror to point to the relocated
1257 // klass in the archive.
1258 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1259 log_debug(cds, heap, mirror)(
1260 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1261 p2i(as_Klass(mirror)), p2i(reloc_k));
1262 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1263
1264 // The field at _array_klass_offset is pointing to the original one dimension
1265 // higher array klass if exists. Relocate the pointer.
1266 Klass *arr = array_klass_acquire(mirror);
1267 if (arr != NULL) {
1268 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1269 log_debug(cds, heap, mirror)(
1270 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1271 p2i(arr), p2i(reloc_arr));
1272 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1273 }
1274 return archived_mirror;
1275 }
1276
1277 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1278 if (MetaspaceShared::relocation_delta() != 0) {
1279 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1280
1281 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1282 if (ak != NULL) {
1283 archived_mirror->metadata_field_put(_array_klass_offset,
1284 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1285 }
1286 }
1287 }
1288
1289 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1290 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1291
1292 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1293 archived_mirror->metadata_field_put(_klass_offset,
1294 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1295
1296 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1297 if (ak != NULL) {
1298 archived_mirror->metadata_field_put(_array_klass_offset,
1299 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1300 }
1301 }
1302
1303
1304 // Returns true if the mirror is updated, false if no archived mirror
1305 // data is present. After the archived mirror object is restored, the
1306 // shared klass' _has_raw_archived_mirror flag is cleared.
1307 bool java_lang_Class::restore_archived_mirror(Klass *k,
1308 Handle class_loader, Handle module,
1309 Handle protection_domain, TRAPS) {
1310 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1311 // see more details in SystemDictionary::resolve_well_known_classes().
1312 if (!SystemDictionary::Class_klass_loaded()) {
1313 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1314 fixup_mirror_list()->push(k);
1315 return true;
1316 }
1317
1318 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1319 if (m == NULL) {
1320 return false;
1321 }
1322
1323 // mirror is archived, restore
1324 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1325 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1326 assert(as_Klass(m) == k, "must be");
1327 Handle mirror(THREAD, m);
1328
1329 if (!k->is_array_klass()) {
1330 // - local static final fields with initial values were initialized at dump time
1331
1332 // create the init_lock
1333 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1334 set_init_lock(mirror(), r);
1335
1336 if (protection_domain.not_null()) {
1337 set_protection_domain(mirror(), protection_domain());
1338 }
1339 }
1340
1341 assert(class_loader() == k->class_loader(), "should be same");
1342 if (class_loader.not_null()) {
1343 set_class_loader(mirror(), class_loader());
1344 }
1345
1346 k->set_java_mirror(mirror);
1347 k->clear_has_raw_archived_mirror();
1348
1349 set_mirror_module_field(k, mirror, module, THREAD);
1350
1351 if (log_is_enabled(Trace, cds, heap, mirror)) {
1352 ResourceMark rm(THREAD);
1353 log_trace(cds, heap, mirror)(
1354 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1355 }
1356
1357 return true;
1358 }
1359 #endif // INCLUDE_CDS_JAVA_HEAP
1360
1361 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1362 assert(_module_offset != 0, "must have been computed already");
1363 java_lang_Class::set_module(k->java_mirror(), module());
1364 }
1365
1366 int java_lang_Class::oop_size(oop java_class) {
1367 assert(_oop_size_offset != 0, "must be set");
1368 int size = java_class->int_field(_oop_size_offset);
1369 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1370 return size;
1371 }
1372
1373
1374 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1375 assert(_oop_size_offset != 0, "must be set");
1376 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1377 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1378 }
1379
1380 int java_lang_Class::static_oop_field_count(oop java_class) {
1381 assert(_static_oop_field_count_offset != 0, "must be set");
1382 return java_class->int_field(_static_oop_field_count_offset);
1383 }
1384
1385 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1386 assert(_static_oop_field_count_offset != 0, "must be set");
1387 return java_class->int_field_raw(_static_oop_field_count_offset);
1388 }
1389
1390 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1391 assert(_static_oop_field_count_offset != 0, "must be set");
1392 java_class->int_field_put(_static_oop_field_count_offset, size);
1393 }
1394
1395 oop java_lang_Class::protection_domain(oop java_class) {
1396 assert(_protection_domain_offset != 0, "must be set");
1397 return java_class->obj_field(_protection_domain_offset);
1398 }
1399 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1400 assert(_protection_domain_offset != 0, "must be set");
1401 java_class->obj_field_put(_protection_domain_offset, pd);
1402 }
1403
1404 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1405 assert(_component_mirror_offset != 0, "must be set");
1406 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1407 }
1408 oop java_lang_Class::component_mirror(oop java_class) {
1409 assert(_component_mirror_offset != 0, "must be set");
1410 return java_class->obj_field(_component_mirror_offset);
1411 }
1412
1413 oop java_lang_Class::init_lock(oop java_class) {
1414 assert(_init_lock_offset != 0, "must be set");
1415 return java_class->obj_field(_init_lock_offset);
1416 }
1417 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1418 assert(_init_lock_offset != 0, "must be set");
1419 java_class->obj_field_put(_init_lock_offset, init_lock);
1420 }
1421
1422 objArrayOop java_lang_Class::signers(oop java_class) {
1423 assert(_signers_offset != 0, "must be set");
1424 return (objArrayOop)java_class->obj_field(_signers_offset);
1425 }
1426 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1427 assert(_signers_offset != 0, "must be set");
1428 java_class->obj_field_put(_signers_offset, (oop)signers);
1429 }
1430
1431 oop java_lang_Class::class_data(oop java_class) {
1432 assert(_classData_offset != 0, "must be set");
1433 return java_class->obj_field(_classData_offset);
1434 }
1435 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1436 assert(_classData_offset != 0, "must be set");
1437 java_class->obj_field_put(_classData_offset, class_data);
1438 }
1439
1440 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1441 assert(_class_loader_offset != 0, "offsets should have been initialized");
1442 java_class->obj_field_put(_class_loader_offset, loader);
1443 }
1444
1445 oop java_lang_Class::class_loader(oop java_class) {
1446 assert(_class_loader_offset != 0, "must be set");
1447 return java_class->obj_field(_class_loader_offset);
1448 }
1449
1450 oop java_lang_Class::module(oop java_class) {
1451 assert(_module_offset != 0, "must be set");
1452 return java_class->obj_field(_module_offset);
1453 }
1454
1455 void java_lang_Class::set_module(oop java_class, oop module) {
1456 assert(_module_offset != 0, "must be set");
1457 java_class->obj_field_put(_module_offset, module);
1458 }
1459
1460 oop java_lang_Class::name(Handle java_class, TRAPS) {
1461 assert(_name_offset != 0, "must be set");
1462 oop o = java_class->obj_field(_name_offset);
1463 if (o == NULL) {
1464 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1465 java_class->obj_field_put(_name_offset, o);
1466 }
1467 return o;
1468 }
1469
1470 oop java_lang_Class::source_file(oop java_class) {
1471 assert(_source_file_offset != 0, "must be set");
1472 return java_class->obj_field(_source_file_offset);
1473 }
1474
1475 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1476 assert(_source_file_offset != 0, "must be set");
1477 java_class->obj_field_put(_source_file_offset, source_file);
1478 }
1479
1480 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1481 // This should be improved by adding a field at the Java level or by
1482 // introducing a new VM klass (see comment in ClassFileParser)
1483 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1484 if (type != T_VOID) {
1485 Klass* aklass = Universe::typeArrayKlassObj(type);
1486 assert(aklass != NULL, "correct bootstrap");
1487 release_set_array_klass(java_class, aklass);
1488 }
1489 #ifdef ASSERT
1490 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1491 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1492 #endif
1493 return java_class;
1494 }
1495
1496
1497 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1498 //%note memory_2
1499 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1500 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1501 assert(k == NULL || k->is_klass(), "type check");
1502 return k;
1503 }
1504
1505
1506 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1507 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1508 java_class->metadata_field_put(_klass_offset, klass);
1509 }
1510
1511
1512 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1513 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1514 Symbol* name = NULL;
1515 bool is_instance = false;
1516 if (is_primitive(java_class)) {
1517 name = vmSymbols::type_signature(primitive_type(java_class));
1518 } else {
1519 Klass* k = as_Klass(java_class);
1520 is_instance = k->is_instance_klass();
1521 name = k->name();
1522 }
1523 if (name == NULL) {
1524 st->print("<null>");
1525 return;
1526 }
1527 if (is_instance) st->print("L");
1528 st->write((char*) name->base(), (int) name->utf8_length());
1529 if (is_instance) st->print(";");
1530 }
1531
1532 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1533 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1534 Symbol* name;
1535 if (is_primitive(java_class)) {
1536 name = vmSymbols::type_signature(primitive_type(java_class));
1537 // Because this can create a new symbol, the caller has to decrement
1538 // the refcount, so make adjustment here and below for symbols returned
1539 // that are not created or incremented due to a successful lookup.
1540 name->increment_refcount();
1541 } else {
1542 Klass* k = as_Klass(java_class);
1543 if (!k->is_instance_klass()) {
1544 name = k->name();
1545 name->increment_refcount();
1546 } else {
1547 ResourceMark rm;
1548 const char* sigstr = k->signature_name();
1549 int siglen = (int) strlen(sigstr);
1550 if (!intern_if_not_found) {
1551 name = SymbolTable::probe(sigstr, siglen);
1552 } else {
1553 name = SymbolTable::new_symbol(sigstr, siglen);
1554 }
1555 }
1556 }
1557 return name;
1558 }
1559
1560 // Returns the Java name for this Java mirror (Resource allocated)
1561 // See Klass::external_name().
1562 // For primitive type Java mirrors, its type name is returned.
1563 const char* java_lang_Class::as_external_name(oop java_class) {
1564 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1565 const char* name = NULL;
1566 if (is_primitive(java_class)) {
1567 name = type2name(primitive_type(java_class));
1568 } else {
1569 name = as_Klass(java_class)->external_name();
1570 }
1571 if (name == NULL) {
1572 name = "<null>";
1573 }
1574 return name;
1575 }
1576
1577 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1578 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1579 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1580 return k;
1581 }
1582
1583
1584 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1585 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1586 java_class->release_metadata_field_put(_array_klass_offset, klass);
1587 }
1588
1589
1590 BasicType java_lang_Class::primitive_type(oop java_class) {
1591 assert(java_lang_Class::is_primitive(java_class), "just checking");
1592 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1593 BasicType type = T_VOID;
1594 if (ak != NULL) {
1595 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1596 type = ArrayKlass::cast(ak)->element_type();
1597 } else {
1598 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1599 }
1600 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1601 return type;
1602 }
1603
1604 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1605 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1606 if (is_primitive(java_class)) {
1607 if (reference_klass != NULL)
1608 (*reference_klass) = NULL;
1609 return primitive_type(java_class);
1610 } else {
1611 if (reference_klass != NULL)
1612 (*reference_klass) = as_Klass(java_class);
1613 return T_OBJECT;
1614 }
1615 }
1616
1617
1618 oop java_lang_Class::primitive_mirror(BasicType t) {
1619 oop mirror = Universe::java_mirror(t);
1620 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1621 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1622 return mirror;
1623 }
1624
1625 #define CLASS_FIELDS_DO(macro) \
1626 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1627 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1628 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1629 macro(_module_offset, k, "module", module_signature, false); \
1630 macro(_name_offset, k, "name", string_signature, false); \
1631 macro(_classData_offset, k, "classData", object_signature, false);
1632
1633 void java_lang_Class::compute_offsets() {
1634 if (_offsets_computed) {
1635 return;
1636 }
1637
1638 _offsets_computed = true;
1639
1640 InstanceKlass* k = SystemDictionary::Class_klass();
1641 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1642
1643 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1644 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1645 // GC treats them the same.
1646 _init_lock_offset = _component_mirror_offset;
1647
1648 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1649 }
1650
1651 #if INCLUDE_CDS
1652 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1653 f->do_bool(&_offsets_computed);
1654 f->do_u4((u4*)&_init_lock_offset);
1655
1656 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1657
1658 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1659 }
1660 #endif
1661
1662 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1663 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1664 return the_class_mirror->int_field(_classRedefinedCount_offset);
1665 }
1666
1667 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1668 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1669 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1670 }
1671
1672
1673 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1674 // platform thread structure, and a eetop offset which was used for thread
1675 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1676 // merged, so in the HotSpot VM we just use the eetop field for the thread
1677 // instead of the privateInfo_offset.
1678 //
1679 // Note: The stackSize field is only present starting in 1.4.
1680
1681 int java_lang_Thread::_name_offset;
1682 int java_lang_Thread::_group_offset;
1683 int java_lang_Thread::_contextClassLoader_offset;
1684 int java_lang_Thread::_inheritedAccessControlContext_offset;
1685 int java_lang_Thread::_priority_offset;
1686 int java_lang_Thread::_eetop_offset;
1687 int java_lang_Thread::_interrupted_offset;
1688 int java_lang_Thread::_daemon_offset;
1689 int java_lang_Thread::_stillborn_offset;
1690 int java_lang_Thread::_stackSize_offset;
1691 int java_lang_Thread::_tid_offset;
1692 int java_lang_Thread::_thread_status_offset;
1693 int java_lang_Thread::_park_blocker_offset;
1694
1695 #define THREAD_FIELDS_DO(macro) \
1696 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1697 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1698 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1699 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1700 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1701 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1702 macro(_eetop_offset, k, "eetop", long_signature, false); \
1703 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1704 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1705 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1706 macro(_tid_offset, k, "tid", long_signature, false); \
1707 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1708 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1709
1710 void java_lang_Thread::compute_offsets() {
1711 assert(_group_offset == 0, "offsets should be initialized only once");
1712
1713 InstanceKlass* k = SystemDictionary::Thread_klass();
1714 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1715 }
1716
1717 #if INCLUDE_CDS
1718 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1719 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1720 }
1721 #endif
1722
1723 JavaThread* java_lang_Thread::thread(oop java_thread) {
1724 return (JavaThread*)java_thread->address_field(_eetop_offset);
1725 }
1726
1727
1728 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1729 java_thread->address_field_put(_eetop_offset, (address)thread);
1730 }
1731
1732 bool java_lang_Thread::interrupted(oop java_thread) {
1733 // Make sure the caller can safely access oops.
1734 assert(Thread::current()->is_VM_thread() ||
1735 (JavaThread::current()->thread_state() != _thread_blocked &&
1736 JavaThread::current()->thread_state() != _thread_in_native),
1737 "Unsafe access to oop");
1738 return java_thread->bool_field_volatile(_interrupted_offset);
1739 }
1740
1741 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1742 // Make sure the caller can safely access oops.
1743 assert(Thread::current()->is_VM_thread() ||
1744 (JavaThread::current()->thread_state() != _thread_blocked &&
1745 JavaThread::current()->thread_state() != _thread_in_native),
1746 "Unsafe access to oop");
1747 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1748 }
1749
1750
1751 oop java_lang_Thread::name(oop java_thread) {
1752 return java_thread->obj_field(_name_offset);
1753 }
1754
1755
1756 void java_lang_Thread::set_name(oop java_thread, oop name) {
1757 java_thread->obj_field_put(_name_offset, name);
1758 }
1759
1760
1761 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1762 return (ThreadPriority)java_thread->int_field(_priority_offset);
1763 }
1764
1765
1766 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1767 java_thread->int_field_put(_priority_offset, priority);
1768 }
1769
1770
1771 oop java_lang_Thread::threadGroup(oop java_thread) {
1772 return java_thread->obj_field(_group_offset);
1773 }
1774
1775
1776 bool java_lang_Thread::is_stillborn(oop java_thread) {
1777 return java_thread->bool_field(_stillborn_offset) != 0;
1778 }
1779
1780
1781 // We never have reason to turn the stillborn bit off
1782 void java_lang_Thread::set_stillborn(oop java_thread) {
1783 java_thread->bool_field_put(_stillborn_offset, true);
1784 }
1785
1786
1787 bool java_lang_Thread::is_alive(oop java_thread) {
1788 JavaThread* thr = java_lang_Thread::thread(java_thread);
1789 return (thr != NULL);
1790 }
1791
1792
1793 bool java_lang_Thread::is_daemon(oop java_thread) {
1794 return java_thread->bool_field(_daemon_offset) != 0;
1795 }
1796
1797
1798 void java_lang_Thread::set_daemon(oop java_thread) {
1799 java_thread->bool_field_put(_daemon_offset, true);
1800 }
1801
1802 oop java_lang_Thread::context_class_loader(oop java_thread) {
1803 return java_thread->obj_field(_contextClassLoader_offset);
1804 }
1805
1806 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1807 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1808 }
1809
1810
1811 jlong java_lang_Thread::stackSize(oop java_thread) {
1812 return java_thread->long_field(_stackSize_offset);
1813 }
1814
1815 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1816 void java_lang_Thread::set_thread_status(oop java_thread,
1817 java_lang_Thread::ThreadStatus status) {
1818 java_thread->int_field_put(_thread_status_offset, status);
1819 }
1820
1821 // Read thread status value from threadStatus field in java.lang.Thread java class.
1822 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1823 // Make sure the caller is operating on behalf of the VM or is
1824 // running VM code (state == _thread_in_vm).
1825 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1826 JavaThread::current()->thread_state() == _thread_in_vm,
1827 "Java Thread is not running in vm");
1828 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1829 }
1830
1831
1832 jlong java_lang_Thread::thread_id(oop java_thread) {
1833 return java_thread->long_field(_tid_offset);
1834 }
1835
1836 oop java_lang_Thread::park_blocker(oop java_thread) {
1837 return java_thread->obj_field(_park_blocker_offset);
1838 }
1839
1840 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1841 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1842 switch (status) {
1843 case NEW : return "NEW";
1844 case RUNNABLE : return "RUNNABLE";
1845 case SLEEPING : return "TIMED_WAITING (sleeping)";
1846 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1847 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1848 case PARKED : return "WAITING (parking)";
1849 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1850 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1851 case TERMINATED : return "TERMINATED";
1852 default : return "UNKNOWN";
1853 };
1854 }
1855 int java_lang_ThreadGroup::_parent_offset;
1856 int java_lang_ThreadGroup::_name_offset;
1857 int java_lang_ThreadGroup::_threads_offset;
1858 int java_lang_ThreadGroup::_groups_offset;
1859 int java_lang_ThreadGroup::_maxPriority_offset;
1860 int java_lang_ThreadGroup::_destroyed_offset;
1861 int java_lang_ThreadGroup::_daemon_offset;
1862 int java_lang_ThreadGroup::_nthreads_offset;
1863 int java_lang_ThreadGroup::_ngroups_offset;
1864
1865 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1866 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1867 return java_thread_group->obj_field(_parent_offset);
1868 }
1869
1870 // ("name as oop" accessor is not necessary)
1871
1872 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1873 oop name = java_thread_group->obj_field(_name_offset);
1874 // ThreadGroup.name can be null
1875 if (name != NULL) {
1876 return java_lang_String::as_utf8_string(name);
1877 }
1878 return NULL;
1879 }
1880
1881 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1882 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1883 return java_thread_group->int_field(_nthreads_offset);
1884 }
1885
1886 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1887 oop threads = java_thread_group->obj_field(_threads_offset);
1888 assert(threads != NULL, "threadgroups should have threads");
1889 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1890 return objArrayOop(threads);
1891 }
1892
1893 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1894 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1895 return java_thread_group->int_field(_ngroups_offset);
1896 }
1897
1898 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1899 oop groups = java_thread_group->obj_field(_groups_offset);
1900 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1901 return objArrayOop(groups);
1902 }
1903
1904 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1905 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1906 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1907 }
1908
1909 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1910 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1911 return java_thread_group->bool_field(_destroyed_offset) != 0;
1912 }
1913
1914 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1915 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1916 return java_thread_group->bool_field(_daemon_offset) != 0;
1917 }
1918
1919 #define THREADGROUP_FIELDS_DO(macro) \
1920 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1921 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1922 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1923 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1924 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1925 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1926 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1927 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1928 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1929
1930 void java_lang_ThreadGroup::compute_offsets() {
1931 assert(_parent_offset == 0, "offsets should be initialized only once");
1932
1933 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1934 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1935 }
1936
1937 #if INCLUDE_CDS
1938 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1939 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1940 }
1941 #endif
1942
1943 // java_lang_Throwable
1944
1945 int java_lang_Throwable::_backtrace_offset;
1946 int java_lang_Throwable::_detailMessage_offset;
1947 int java_lang_Throwable::_stackTrace_offset;
1948 int java_lang_Throwable::_depth_offset;
1949 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
1950
1951 #define THROWABLE_FIELDS_DO(macro) \
1952 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
1953 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
1954 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1955 macro(_depth_offset, k, "depth", int_signature, false); \
1956 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1957
1958 void java_lang_Throwable::compute_offsets() {
1959 InstanceKlass* k = SystemDictionary::Throwable_klass();
1960 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1961 }
1962
1963 #if INCLUDE_CDS
1964 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1965 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1966 }
1967 #endif
1968
1969 oop java_lang_Throwable::unassigned_stacktrace() {
1970 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1971 oop base = ik->static_field_base_raw();
1972 return base->obj_field(_static_unassigned_stacktrace_offset);
1973 }
1974
1975 oop java_lang_Throwable::backtrace(oop throwable) {
1976 return throwable->obj_field_acquire(_backtrace_offset);
1977 }
1978
1979
1980 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1981 throwable->release_obj_field_put(_backtrace_offset, value);
1982 }
1983
1984 int java_lang_Throwable::depth(oop throwable) {
1985 return throwable->int_field(_depth_offset);
1986 }
1987
1988 void java_lang_Throwable::set_depth(oop throwable, int value) {
1989 throwable->int_field_put(_depth_offset, value);
1990 }
1991
1992 oop java_lang_Throwable::message(oop throwable) {
1993 return throwable->obj_field(_detailMessage_offset);
1994 }
1995
1996
1997 // Return Symbol for detailed_message or NULL
1998 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1999 PRESERVE_EXCEPTION_MARK; // Keep original exception
2000 oop detailed_message = java_lang_Throwable::message(throwable);
2001 if (detailed_message != NULL) {
2002 return java_lang_String::as_symbol(detailed_message);
2003 }
2004 return NULL;
2005 }
2006
2007 void java_lang_Throwable::set_message(oop throwable, oop value) {
2008 throwable->obj_field_put(_detailMessage_offset, value);
2009 }
2010
2011
2012 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2013 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2014 }
2015
2016 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2017 set_stacktrace(throwable, NULL);
2018 }
2019
2020
2021 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2022 ResourceMark rm;
2023 Klass* k = throwable->klass();
2024 assert(k != NULL, "just checking");
2025 st->print("%s", k->external_name());
2026 oop msg = message(throwable);
2027 if (msg != NULL) {
2028 st->print(": %s", java_lang_String::as_utf8_string(msg));
2029 }
2030 }
2031
2032 // After this many redefines, the stack trace is unreliable.
2033 const int MAX_VERSION = USHRT_MAX;
2034
2035 static inline bool version_matches(Method* method, int version) {
2036 assert(version < MAX_VERSION, "version is too big");
2037 return method != NULL && (method->constants()->version() == version);
2038 }
2039
2040 // This class provides a simple wrapper over the internal structure of
2041 // exception backtrace to insulate users of the backtrace from needing
2042 // to know what it looks like.
2043 // The code of this class is not GC safe. Allocations can only happen
2044 // in expand().
2045 class BacktraceBuilder: public StackObj {
2046 friend class BacktraceIterator;
2047 private:
2048 Handle _backtrace;
2049 objArrayOop _head;
2050 typeArrayOop _methods;
2051 typeArrayOop _bcis;
2052 objArrayOop _mirrors;
2053 typeArrayOop _names; // Needed to insulate method name against redefinition.
2054 // True if the top frame of the backtrace is omitted because it shall be hidden.
2055 bool _has_hidden_top_frame;
2056 int _index;
2057 NoSafepointVerifier _nsv;
2058
2059 enum {
2060 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2061 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2062 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2063 trace_names_offset = java_lang_Throwable::trace_names_offset,
2064 trace_next_offset = java_lang_Throwable::trace_next_offset,
2065 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2066 trace_size = java_lang_Throwable::trace_size,
2067 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2068 };
2069
2070 // get info out of chunks
2071 static typeArrayOop get_methods(objArrayHandle chunk) {
2072 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2073 assert(methods != NULL, "method array should be initialized in backtrace");
2074 return methods;
2075 }
2076 static typeArrayOop get_bcis(objArrayHandle chunk) {
2077 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2078 assert(bcis != NULL, "bci array should be initialized in backtrace");
2079 return bcis;
2080 }
2081 static objArrayOop get_mirrors(objArrayHandle chunk) {
2082 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2083 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2084 return mirrors;
2085 }
2086 static typeArrayOop get_names(objArrayHandle chunk) {
2087 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2088 assert(names != NULL, "names array should be initialized in backtrace");
2089 return names;
2090 }
2091 static bool has_hidden_top_frame(objArrayHandle chunk) {
2092 oop hidden = chunk->obj_at(trace_hidden_offset);
2093 return hidden != NULL;
2094 }
2095
2096 public:
2097
2098 // constructor for new backtrace
2099 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2100 expand(CHECK);
2101 _backtrace = Handle(THREAD, _head);
2102 _index = 0;
2103 }
2104
2105 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2106 _methods = get_methods(backtrace);
2107 _bcis = get_bcis(backtrace);
2108 _mirrors = get_mirrors(backtrace);
2109 _names = get_names(backtrace);
2110 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2111 assert(_methods->length() == _bcis->length() &&
2112 _methods->length() == _mirrors->length() &&
2113 _mirrors->length() == _names->length(),
2114 "method and source information arrays should match");
2115
2116 // head is the preallocated backtrace
2117 _head = backtrace();
2118 _backtrace = Handle(thread, _head);
2119 _index = 0;
2120 }
2121
2122 void expand(TRAPS) {
2123 objArrayHandle old_head(THREAD, _head);
2124 PauseNoSafepointVerifier pnsv(&_nsv);
2125
2126 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2127 objArrayHandle new_head(THREAD, head);
2128
2129 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2130 typeArrayHandle new_methods(THREAD, methods);
2131
2132 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2133 typeArrayHandle new_bcis(THREAD, bcis);
2134
2135 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2136 objArrayHandle new_mirrors(THREAD, mirrors);
2137
2138 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2139 typeArrayHandle new_names(THREAD, names);
2140
2141 if (!old_head.is_null()) {
2142 old_head->obj_at_put(trace_next_offset, new_head());
2143 }
2144 new_head->obj_at_put(trace_methods_offset, new_methods());
2145 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2146 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2147 new_head->obj_at_put(trace_names_offset, new_names());
2148 new_head->obj_at_put(trace_hidden_offset, NULL);
2149
2150 _head = new_head();
2151 _methods = new_methods();
2152 _bcis = new_bcis();
2153 _mirrors = new_mirrors();
2154 _names = new_names();
2155 _index = 0;
2156 }
2157
2158 oop backtrace() {
2159 return _backtrace();
2160 }
2161
2162 inline void push(Method* method, int bci, TRAPS) {
2163 // Smear the -1 bci to 0 since the array only holds unsigned
2164 // shorts. The later line number lookup would just smear the -1
2165 // to a 0 even if it could be recorded.
2166 if (bci == SynchronizationEntryBCI) bci = 0;
2167
2168 if (_index >= trace_chunk_size) {
2169 methodHandle mhandle(THREAD, method);
2170 expand(CHECK);
2171 method = mhandle();
2172 }
2173
2174 _methods->ushort_at_put(_index, method->orig_method_idnum());
2175 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2176
2177 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2178 // klass owning the symbols alive so their refcounts aren't decremented.
2179 Symbol* name = method->name();
2180 _names->symbol_at_put(_index, name);
2181
2182 // We need to save the mirrors in the backtrace to keep the class
2183 // from being unloaded while we still have this stack trace.
2184 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2185 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2186 _index++;
2187 }
2188
2189 void set_has_hidden_top_frame(TRAPS) {
2190 if (!_has_hidden_top_frame) {
2191 // It would be nice to add java/lang/Boolean::TRUE here
2192 // to indicate that this backtrace has a hidden top frame.
2193 // But this code is used before TRUE is allocated.
2194 // Therefore let's just use an arbitrary legal oop
2195 // available right here. _methods is a short[].
2196 assert(_methods != NULL, "we need a legal oop");
2197 _has_hidden_top_frame = true;
2198 _head->obj_at_put(trace_hidden_offset, _methods);
2199 }
2200 }
2201 };
2202
2203 struct BacktraceElement : public StackObj {
2204 int _method_id;
2205 int _bci;
2206 int _version;
2207 Symbol* _name;
2208 Handle _mirror;
2209 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2210 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2211 };
2212
2213 class BacktraceIterator : public StackObj {
2214 int _index;
2215 objArrayHandle _result;
2216 objArrayHandle _mirrors;
2217 typeArrayHandle _methods;
2218 typeArrayHandle _bcis;
2219 typeArrayHandle _names;
2220
2221 void init(objArrayHandle result, Thread* thread) {
2222 // Get method id, bci, version and mirror from chunk
2223 _result = result;
2224 if (_result.not_null()) {
2225 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2226 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2227 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2228 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2229 _index = 0;
2230 }
2231 }
2232 public:
2233 BacktraceIterator(objArrayHandle result, Thread* thread) {
2234 init(result, thread);
2235 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2236 }
2237
2238 BacktraceElement next(Thread* thread) {
2239 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2240 _methods->ushort_at(_index),
2241 Backtrace::version_at(_bcis->int_at(_index)),
2242 Backtrace::bci_at(_bcis->int_at(_index)),
2243 _names->symbol_at(_index));
2244 _index++;
2245
2246 if (_index >= java_lang_Throwable::trace_chunk_size) {
2247 int next_offset = java_lang_Throwable::trace_next_offset;
2248 // Get next chunk
2249 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2250 init(result, thread);
2251 }
2252 return e;
2253 }
2254
2255 bool repeat() {
2256 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2257 }
2258 };
2259
2260
2261 // Print stack trace element to resource allocated buffer
2262 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2263 int version, int bci, Symbol* name) {
2264 ResourceMark rm;
2265
2266 // Get strings and string lengths
2267 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2268 const char* klass_name = holder->external_name();
2269 int buf_len = (int)strlen(klass_name);
2270
2271 char* method_name = name->as_C_string();
2272 buf_len += (int)strlen(method_name);
2273
2274 char* source_file_name = NULL;
2275 Symbol* source = Backtrace::get_source_file_name(holder, version);
2276 if (source != NULL) {
2277 source_file_name = source->as_C_string();
2278 buf_len += (int)strlen(source_file_name);
2279 }
2280
2281 char *module_name = NULL, *module_version = NULL;
2282 ModuleEntry* module = holder->module();
2283 if (module->is_named()) {
2284 module_name = module->name()->as_C_string();
2285 buf_len += (int)strlen(module_name);
2286 if (module->version() != NULL) {
2287 module_version = module->version()->as_C_string();
2288 buf_len += (int)strlen(module_version);
2289 }
2290 }
2291
2292 // Allocate temporary buffer with extra space for formatting and line number
2293 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2294
2295 // Print stack trace line in buffer
2296 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2297
2298 // Print module information
2299 if (module_name != NULL) {
2300 if (module_version != NULL) {
2301 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2302 } else {
2303 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2304 }
2305 }
2306
2307 // The method can be NULL if the requested class version is gone
2308 Method* method = holder->method_with_orig_idnum(method_id, version);
2309 if (!version_matches(method, version)) {
2310 strcat(buf, "Redefined)");
2311 } else {
2312 int line_number = Backtrace::get_line_number(method, bci);
2313 if (line_number == -2) {
2314 strcat(buf, "Native Method)");
2315 } else {
2316 if (source_file_name != NULL && (line_number != -1)) {
2317 // Sourcename and linenumber
2318 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2319 } else if (source_file_name != NULL) {
2320 // Just sourcename
2321 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2322 } else {
2323 // Neither sourcename nor linenumber
2324 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2325 }
2326 CompiledMethod* nm = method->code();
2327 if (WizardMode && nm != NULL) {
2328 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2329 }
2330 }
2331 }
2332
2333 st->print_cr("%s", buf);
2334 }
2335
2336 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2337 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2338 int method_id = method->orig_method_idnum();
2339 int version = method->constants()->version();
2340 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2341 }
2342
2343 /**
2344 * Print the throwable message and its stack trace plus all causes by walking the
2345 * cause chain. The output looks the same as of Throwable.printStackTrace().
2346 */
2347 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2348 // First, print the message.
2349 print(throwable(), st);
2350 st->cr();
2351
2352 // Now print the stack trace.
2353 Thread* THREAD = Thread::current();
2354 while (throwable.not_null()) {
2355 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2356 if (result.is_null()) {
2357 st->print_raw_cr("\t<<no stack trace available>>");
2358 return;
2359 }
2360 BacktraceIterator iter(result, THREAD);
2361
2362 while (iter.repeat()) {
2363 BacktraceElement bte = iter.next(THREAD);
2364 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2365 }
2366 {
2367 // Call getCause() which doesn't necessarily return the _cause field.
2368 EXCEPTION_MARK;
2369 JavaValue cause(T_OBJECT);
2370 JavaCalls::call_virtual(&cause,
2371 throwable,
2372 throwable->klass(),
2373 vmSymbols::getCause_name(),
2374 vmSymbols::void_throwable_signature(),
2375 THREAD);
2376 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2377 if (HAS_PENDING_EXCEPTION) {
2378 CLEAR_PENDING_EXCEPTION;
2379 throwable = Handle();
2380 } else {
2381 throwable = Handle(THREAD, (oop) cause.get_jobject());
2382 if (throwable.not_null()) {
2383 st->print("Caused by: ");
2384 print(throwable(), st);
2385 st->cr();
2386 }
2387 }
2388 }
2389 }
2390 }
2391
2392 /**
2393 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2394 */
2395 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2396 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2397 JavaValue result(T_VOID);
2398 JavaCalls::call_virtual(&result,
2399 throwable,
2400 SystemDictionary::Throwable_klass(),
2401 vmSymbols::printStackTrace_name(),
2402 vmSymbols::void_method_signature(),
2403 THREAD);
2404 }
2405
2406 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2407 if (!StackTraceInThrowable) return;
2408 ResourceMark rm(THREAD);
2409
2410 // Start out by clearing the backtrace for this object, in case the VM
2411 // runs out of memory while allocating the stack trace
2412 set_backtrace(throwable(), NULL);
2413 // Clear lazily constructed Java level stacktrace if refilling occurs
2414 // This is unnecessary in 1.7+ but harmless
2415 clear_stacktrace(throwable());
2416
2417 int max_depth = MaxJavaStackTraceDepth;
2418 JavaThread* thread = (JavaThread*)THREAD;
2419
2420 BacktraceBuilder bt(CHECK);
2421
2422 // If there is no Java frame just return the method that was being called
2423 // with bci 0
2424 if (!thread->has_last_Java_frame()) {
2425 if (max_depth >= 1 && method() != NULL) {
2426 bt.push(method(), 0, CHECK);
2427 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2428 set_depth(throwable(), 1);
2429 set_backtrace(throwable(), bt.backtrace());
2430 }
2431 return;
2432 }
2433
2434 // Instead of using vframe directly, this version of fill_in_stack_trace
2435 // basically handles everything by hand. This significantly improved the
2436 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2437 // See bug 6333838 for more details.
2438 // The "ASSERT" here is to verify this method generates the exactly same stack
2439 // trace as utilizing vframe.
2440 #ifdef ASSERT
2441 vframeStream st(thread);
2442 #endif
2443 int total_count = 0;
2444 RegisterMap map(thread, false);
2445 int decode_offset = 0;
2446 CompiledMethod* nm = NULL;
2447 bool skip_fillInStackTrace_check = false;
2448 bool skip_throwableInit_check = false;
2449 bool skip_hidden = !ShowHiddenFrames;
2450
2451 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2452 Method* method = NULL;
2453 int bci = 0;
2454
2455 // Compiled java method case.
2456 if (decode_offset != 0) {
2457 DebugInfoReadStream stream(nm, decode_offset);
2458 decode_offset = stream.read_int();
2459 method = (Method*)nm->metadata_at(stream.read_int());
2460 bci = stream.read_bci();
2461 } else {
2462 if (fr.is_first_frame()) break;
2463 address pc = fr.pc();
2464 if (fr.is_interpreted_frame()) {
2465 address bcp = fr.interpreter_frame_bcp();
2466 method = fr.interpreter_frame_method();
2467 bci = method->bci_from(bcp);
2468 fr = fr.sender(&map);
2469 } else {
2470 CodeBlob* cb = fr.cb();
2471 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2472 // but non nmethod
2473 fr = fr.sender(&map);
2474 if (cb == NULL || !cb->is_compiled()) {
2475 continue;
2476 }
2477 nm = cb->as_compiled_method();
2478 if (nm->method()->is_native()) {
2479 method = nm->method();
2480 bci = 0;
2481 } else {
2482 PcDesc* pd = nm->pc_desc_at(pc);
2483 decode_offset = pd->scope_decode_offset();
2484 // if decode_offset is not equal to 0, it will execute the
2485 // "compiled java method case" at the beginning of the loop.
2486 continue;
2487 }
2488 }
2489 }
2490 #ifdef ASSERT
2491 assert(st.method() == method && st.bci() == bci,
2492 "Wrong stack trace");
2493 st.next();
2494 #endif
2495
2496 // the format of the stacktrace will be:
2497 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2498 // - 0 or more <init> methods for the exception class (skipped)
2499 // - rest of the stack
2500
2501 if (!skip_fillInStackTrace_check) {
2502 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2503 throwable->is_a(method->method_holder())) {
2504 continue;
2505 }
2506 else {
2507 skip_fillInStackTrace_check = true; // gone past them all
2508 }
2509 }
2510 if (!skip_throwableInit_check) {
2511 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2512
2513 // skip <init> methods of the exception class and superclasses
2514 // This is simlar to classic VM.
2515 if (method->name() == vmSymbols::object_initializer_name() &&
2516 throwable->is_a(method->method_holder())) {
2517 continue;
2518 } else {
2519 // there are none or we've seen them all - either way stop checking
2520 skip_throwableInit_check = true;
2521 }
2522 }
2523 if (method->is_hidden()) {
2524 if (skip_hidden) {
2525 if (total_count == 0) {
2526 // The top frame will be hidden from the stack trace.
2527 bt.set_has_hidden_top_frame(CHECK);
2528 }
2529 continue;
2530 }
2531 }
2532 bt.push(method, bci, CHECK);
2533 total_count++;
2534 }
2535
2536 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2537
2538 // Put completed stack trace into throwable object
2539 set_backtrace(throwable(), bt.backtrace());
2540 set_depth(throwable(), total_count);
2541 }
2542
2543 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2544 // No-op if stack trace is disabled
2545 if (!StackTraceInThrowable) {
2546 return;
2547 }
2548
2549 // Disable stack traces for some preallocated out of memory errors
2550 if (!Universe::should_fill_in_stack_trace(throwable)) {
2551 return;
2552 }
2553
2554 PRESERVE_EXCEPTION_MARK;
2555
2556 JavaThread* thread = JavaThread::active();
2557 fill_in_stack_trace(throwable, method, thread);
2558 // ignore exceptions thrown during stack trace filling
2559 CLEAR_PENDING_EXCEPTION;
2560 }
2561
2562 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2563 // Allocate stack trace - backtrace is created but not filled in
2564
2565 // No-op if stack trace is disabled
2566 if (!StackTraceInThrowable) return;
2567 BacktraceBuilder bt(CHECK); // creates a backtrace
2568 set_backtrace(throwable(), bt.backtrace());
2569 }
2570
2571
2572 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2573 // Fill in stack trace into preallocated backtrace (no GC)
2574
2575 // No-op if stack trace is disabled
2576 if (!StackTraceInThrowable) return;
2577
2578 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2579
2580 JavaThread* THREAD = JavaThread::current();
2581
2582 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2583 assert(backtrace.not_null(), "backtrace should have been preallocated");
2584
2585 ResourceMark rm(THREAD);
2586 vframeStream st(THREAD);
2587
2588 BacktraceBuilder bt(THREAD, backtrace);
2589
2590 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2591 // methods as preallocated errors aren't created by "java" code.
2592
2593 // fill in as much stack trace as possible
2594 int chunk_count = 0;
2595 for (;!st.at_end(); st.next()) {
2596 bt.push(st.method(), st.bci(), CHECK);
2597 chunk_count++;
2598
2599 // Bail-out for deep stacks
2600 if (chunk_count >= trace_chunk_size) break;
2601 }
2602 set_depth(throwable(), chunk_count);
2603 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2604
2605 // We support the Throwable immutability protocol defined for Java 7.
2606 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2607 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2608 }
2609
2610 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2611 objArrayHandle stack_trace_array_h, TRAPS) {
2612
2613 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2614 THROW(vmSymbols::java_lang_NullPointerException());
2615 }
2616
2617 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2618
2619 if (stack_trace_array_h->length() != depth(throwable())) {
2620 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2621 }
2622
2623 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2624 BacktraceIterator iter(result, THREAD);
2625
2626 int index = 0;
2627 while (iter.repeat()) {
2628 BacktraceElement bte = iter.next(THREAD);
2629
2630 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2631
2632 if (stack_trace_element.is_null()) {
2633 THROW(vmSymbols::java_lang_NullPointerException());
2634 }
2635
2636 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2637 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2638
2639 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2640 method,
2641 bte._version,
2642 bte._bci,
2643 bte._name, CHECK);
2644 }
2645 }
2646
2647 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2648 Thread* THREAD = Thread::current();
2649 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2650 BacktraceIterator iter(result, THREAD);
2651 // No backtrace available.
2652 if (!iter.repeat()) return false;
2653
2654 // If the exception happened in a frame that has been hidden, i.e.,
2655 // omitted from the back trace, we can not compute the message.
2656 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2657 if (hidden != NULL) {
2658 return false;
2659 }
2660
2661 // Get first backtrace element.
2662 BacktraceElement bte = iter.next(THREAD);
2663
2664 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2665 assert(holder != NULL, "first element should be non-null");
2666 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2667
2668 // Original version is no longer available.
2669 if (m == NULL || !version_matches(m, bte._version)) {
2670 return false;
2671 }
2672
2673 *method = m;
2674 *bci = bte._bci;
2675 return true;
2676 }
2677
2678 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2679 // Allocate java.lang.StackTraceElement instance
2680 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2681 assert(k != NULL, "must be loaded in 1.4+");
2682 if (k->should_be_initialized()) {
2683 k->initialize(CHECK_NULL);
2684 }
2685
2686 Handle element = k->allocate_instance_handle(CHECK_NULL);
2687
2688 int version = method->constants()->version();
2689 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2690 return element();
2691 }
2692
2693 void java_lang_StackTraceElement::fill_in(Handle element,
2694 InstanceKlass* holder, const methodHandle& method,
2695 int version, int bci, Symbol* name, TRAPS) {
2696 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2697
2698 ResourceMark rm(THREAD);
2699 HandleMark hm(THREAD);
2700
2701 // Fill in class name
2702 Handle java_class(THREAD, holder->java_mirror());
2703 oop classname = java_lang_Class::name(java_class, CHECK);
2704 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2705 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2706
2707 oop loader = holder->class_loader();
2708 if (loader != NULL) {
2709 oop loader_name = java_lang_ClassLoader::name(loader);
2710 if (loader_name != NULL)
2711 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2712 }
2713
2714 // Fill in method name
2715 oop methodname = StringTable::intern(name, CHECK);
2716 java_lang_StackTraceElement::set_methodName(element(), methodname);
2717
2718 // Fill in module name and version
2719 ModuleEntry* module = holder->module();
2720 if (module->is_named()) {
2721 oop module_name = StringTable::intern(module->name(), CHECK);
2722 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2723 oop module_version;
2724 if (module->version() != NULL) {
2725 module_version = StringTable::intern(module->version(), CHECK);
2726 } else {
2727 module_version = NULL;
2728 }
2729 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2730 }
2731
2732 if (method() == NULL || !version_matches(method(), version)) {
2733 // The method was redefined, accurate line number information isn't available
2734 java_lang_StackTraceElement::set_fileName(element(), NULL);
2735 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2736 } else {
2737 Symbol* source;
2738 oop source_file;
2739 int line_number;
2740 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2741
2742 java_lang_StackTraceElement::set_fileName(element(), source_file);
2743 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2744 }
2745 }
2746
2747 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2748 InstanceKlass* holder,
2749 int version,
2750 const methodHandle& method,
2751 int bci,
2752 Symbol*& source,
2753 oop& source_file,
2754 int& line_number, TRAPS) {
2755 // Fill in source file name and line number.
2756 source = Backtrace::get_source_file_name(holder, version);
2757 source_file = java_lang_Class::source_file(java_class());
2758 if (source != NULL) {
2759 // Class was not redefined. We can trust its cache if set,
2760 // else we have to initialize it.
2761 if (source_file == NULL) {
2762 source_file = StringTable::intern(source, CHECK);
2763 java_lang_Class::set_source_file(java_class(), source_file);
2764 }
2765 } else {
2766 // Class was redefined. Dump the cache if it was set.
2767 if (source_file != NULL) {
2768 source_file = NULL;
2769 java_lang_Class::set_source_file(java_class(), source_file);
2770 }
2771 }
2772 line_number = Backtrace::get_line_number(method(), bci);
2773 }
2774
2775 #if INCLUDE_JVMCI
2776 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2777 Symbol*& filename, int& line_number, TRAPS) {
2778 ResourceMark rm(THREAD);
2779 HandleMark hm(THREAD);
2780
2781 filename = NULL;
2782 line_number = -1;
2783
2784 oop source_file;
2785 int version = method->constants()->version();
2786 InstanceKlass* holder = method->method_holder();
2787 Handle java_class(THREAD, holder->java_mirror());
2788 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2789 }
2790 #endif // INCLUDE_JVMCI
2791
2792 // java_lang_StackFrameInfo
2793
2794 int java_lang_StackFrameInfo::_memberName_offset;
2795 int java_lang_StackFrameInfo::_bci_offset;
2796 int java_lang_StackFrameInfo::_version_offset;
2797
2798 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2799 macro(_memberName_offset, k, "memberName", object_signature, false); \
2800 macro(_bci_offset, k, "bci", int_signature, false)
2801
2802 void java_lang_StackFrameInfo::compute_offsets() {
2803 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2804 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2805 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2806 }
2807
2808 #if INCLUDE_CDS
2809 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2810 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2811 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2812 }
2813 #endif
2814
2815 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2816 HandleMark hm(THREAD);
2817 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2818 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2819 // we should expand MemberName::name when Throwable uses StackTrace
2820 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2821 return method;
2822 }
2823
2824 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2825 // set Method* or mid/cpref
2826 HandleMark hm(THREAD);
2827 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2828 InstanceKlass* ik = method->method_holder();
2829 CallInfo info(method(), ik, CHECK);
2830 MethodHandles::init_method_MemberName(mname, info, THREAD);
2831 // set bci
2832 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2833 // method may be redefined; store the version
2834 int version = method->constants()->version();
2835 assert((jushort)version == version, "version should be short");
2836 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2837 }
2838
2839 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2840 ResourceMark rm(THREAD);
2841 HandleMark hm(THREAD);
2842 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2843 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2844 InstanceKlass* holder = InstanceKlass::cast(clazz);
2845 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2846
2847 short version = stackFrame->short_field(_version_offset);
2848 int bci = stackFrame->int_field(_bci_offset);
2849 Symbol* name = method->name();
2850 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2851 version, bci, name, CHECK);
2852 }
2853
2854 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2855 element->short_field_put(_version_offset, value);
2856 }
2857
2858 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2859 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2860 element->int_field_put(_bci_offset, value);
2861 }
2862
2863 int java_lang_LiveStackFrameInfo::_monitors_offset;
2864 int java_lang_LiveStackFrameInfo::_locals_offset;
2865 int java_lang_LiveStackFrameInfo::_operands_offset;
2866 int java_lang_LiveStackFrameInfo::_mode_offset;
2867
2868 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2869 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2870 macro(_locals_offset, k, "locals", object_array_signature, false); \
2871 macro(_operands_offset, k, "operands", object_array_signature, false); \
2872 macro(_mode_offset, k, "mode", int_signature, false)
2873
2874 void java_lang_LiveStackFrameInfo::compute_offsets() {
2875 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2876 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2877 }
2878
2879 #if INCLUDE_CDS
2880 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2881 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2882 }
2883 #endif
2884
2885 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
2886 element->obj_field_put(_monitors_offset, value);
2887 }
2888
2889 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
2890 element->obj_field_put(_locals_offset, value);
2891 }
2892
2893 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
2894 element->obj_field_put(_operands_offset, value);
2895 }
2896
2897 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
2898 element->int_field_put(_mode_offset, value);
2899 }
2900
2901
2902 // java_lang_AccessibleObject
2903
2904 int java_lang_reflect_AccessibleObject::_override_offset;
2905
2906 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2907 macro(_override_offset, k, "override", bool_signature, false)
2908
2909 void java_lang_reflect_AccessibleObject::compute_offsets() {
2910 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2911 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2912 }
2913
2914 #if INCLUDE_CDS
2915 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2916 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2917 }
2918 #endif
2919
2920 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2921 return (jboolean) reflect->bool_field(_override_offset);
2922 }
2923
2924 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2925 reflect->bool_field_put(_override_offset, (int) value);
2926 }
2927
2928 // java_lang_reflect_Method
2929
2930 int java_lang_reflect_Method::_clazz_offset;
2931 int java_lang_reflect_Method::_name_offset;
2932 int java_lang_reflect_Method::_returnType_offset;
2933 int java_lang_reflect_Method::_parameterTypes_offset;
2934 int java_lang_reflect_Method::_exceptionTypes_offset;
2935 int java_lang_reflect_Method::_slot_offset;
2936 int java_lang_reflect_Method::_modifiers_offset;
2937 int java_lang_reflect_Method::_signature_offset;
2938 int java_lang_reflect_Method::_annotations_offset;
2939 int java_lang_reflect_Method::_parameter_annotations_offset;
2940 int java_lang_reflect_Method::_annotation_default_offset;
2941
2942 #define METHOD_FIELDS_DO(macro) \
2943 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2944 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2945 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2946 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2947 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2948 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2949 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2950 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2951 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2952 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2953 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2954
2955 void java_lang_reflect_Method::compute_offsets() {
2956 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2957 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2958 }
2959
2960 #if INCLUDE_CDS
2961 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2962 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2963 }
2964 #endif
2965
2966 Handle java_lang_reflect_Method::create(TRAPS) {
2967 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2968 Klass* klass = SystemDictionary::reflect_Method_klass();
2969 // This class is eagerly initialized during VM initialization, since we keep a refence
2970 // to one of the methods
2971 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2972 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2973 }
2974
2975 oop java_lang_reflect_Method::clazz(oop reflect) {
2976 return reflect->obj_field(_clazz_offset);
2977 }
2978
2979 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2980 reflect->obj_field_put(_clazz_offset, value);
2981 }
2982
2983 int java_lang_reflect_Method::slot(oop reflect) {
2984 return reflect->int_field(_slot_offset);
2985 }
2986
2987 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2988 reflect->int_field_put(_slot_offset, value);
2989 }
2990
2991 void java_lang_reflect_Method::set_name(oop method, oop value) {
2992 method->obj_field_put(_name_offset, value);
2993 }
2994
2995 oop java_lang_reflect_Method::return_type(oop method) {
2996 return method->obj_field(_returnType_offset);
2997 }
2998
2999 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
3000 method->obj_field_put(_returnType_offset, value);
3001 }
3002
3003 oop java_lang_reflect_Method::parameter_types(oop method) {
3004 return method->obj_field(_parameterTypes_offset);
3005 }
3006
3007 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3008 method->obj_field_put(_parameterTypes_offset, value);
3009 }
3010
3011 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3012 method->obj_field_put(_exceptionTypes_offset, value);
3013 }
3014
3015 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3016 method->int_field_put(_modifiers_offset, value);
3017 }
3018
3019 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3020 method->obj_field_put(_signature_offset, value);
3021 }
3022
3023 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3024 method->obj_field_put(_annotations_offset, value);
3025 }
3026
3027 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3028 method->obj_field_put(_parameter_annotations_offset, value);
3029 }
3030
3031 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3032 method->obj_field_put(_annotation_default_offset, value);
3033 }
3034
3035 int java_lang_reflect_Constructor::_clazz_offset;
3036 int java_lang_reflect_Constructor::_parameterTypes_offset;
3037 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3038 int java_lang_reflect_Constructor::_slot_offset;
3039 int java_lang_reflect_Constructor::_modifiers_offset;
3040 int java_lang_reflect_Constructor::_signature_offset;
3041 int java_lang_reflect_Constructor::_annotations_offset;
3042 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3043
3044 #define CONSTRUCTOR_FIELDS_DO(macro) \
3045 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3046 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3047 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3048 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3049 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3050 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3051 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3052 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3053
3054 void java_lang_reflect_Constructor::compute_offsets() {
3055 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
3056 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3057 }
3058
3059 #if INCLUDE_CDS
3060 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3061 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3062 }
3063 #endif
3064
3065 Handle java_lang_reflect_Constructor::create(TRAPS) {
3066 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3067 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3068 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3069 InstanceKlass* ik = InstanceKlass::cast(k);
3070 // Ensure it is initialized
3071 ik->initialize(CHECK_NH);
3072 return ik->allocate_instance_handle(THREAD);
3073 }
3074
3075 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3076 return reflect->obj_field(_clazz_offset);
3077 }
3078
3079 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3080 reflect->obj_field_put(_clazz_offset, value);
3081 }
3082
3083 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3084 return constructor->obj_field(_parameterTypes_offset);
3085 }
3086
3087 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3088 constructor->obj_field_put(_parameterTypes_offset, value);
3089 }
3090
3091 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3092 constructor->obj_field_put(_exceptionTypes_offset, value);
3093 }
3094
3095 int java_lang_reflect_Constructor::slot(oop reflect) {
3096 return reflect->int_field(_slot_offset);
3097 }
3098
3099 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3100 reflect->int_field_put(_slot_offset, value);
3101 }
3102
3103 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3104 constructor->int_field_put(_modifiers_offset, value);
3105 }
3106
3107 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3108 constructor->obj_field_put(_signature_offset, value);
3109 }
3110
3111 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3112 constructor->obj_field_put(_annotations_offset, value);
3113 }
3114
3115 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3116 method->obj_field_put(_parameter_annotations_offset, value);
3117 }
3118
3119 int java_lang_reflect_Field::_clazz_offset;
3120 int java_lang_reflect_Field::_name_offset;
3121 int java_lang_reflect_Field::_type_offset;
3122 int java_lang_reflect_Field::_slot_offset;
3123 int java_lang_reflect_Field::_modifiers_offset;
3124 int java_lang_reflect_Field::_trusted_final_offset;
3125 int java_lang_reflect_Field::_signature_offset;
3126 int java_lang_reflect_Field::_annotations_offset;
3127
3128 #define FIELD_FIELDS_DO(macro) \
3129 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3130 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3131 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3132 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3133 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3134 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3135 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3136 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3137
3138 void java_lang_reflect_Field::compute_offsets() {
3139 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3140 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3141 }
3142
3143 #if INCLUDE_CDS
3144 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3145 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3146 }
3147 #endif
3148
3149 Handle java_lang_reflect_Field::create(TRAPS) {
3150 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3151 Symbol* name = vmSymbols::java_lang_reflect_Field();
3152 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3153 InstanceKlass* ik = InstanceKlass::cast(k);
3154 // Ensure it is initialized
3155 ik->initialize(CHECK_NH);
3156 return ik->allocate_instance_handle(THREAD);
3157 }
3158
3159 oop java_lang_reflect_Field::clazz(oop reflect) {
3160 return reflect->obj_field(_clazz_offset);
3161 }
3162
3163 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3164 reflect->obj_field_put(_clazz_offset, value);
3165 }
3166
3167 oop java_lang_reflect_Field::name(oop field) {
3168 return field->obj_field(_name_offset);
3169 }
3170
3171 void java_lang_reflect_Field::set_name(oop field, oop value) {
3172 field->obj_field_put(_name_offset, value);
3173 }
3174
3175 oop java_lang_reflect_Field::type(oop field) {
3176 return field->obj_field(_type_offset);
3177 }
3178
3179 void java_lang_reflect_Field::set_type(oop field, oop value) {
3180 field->obj_field_put(_type_offset, value);
3181 }
3182
3183 int java_lang_reflect_Field::slot(oop reflect) {
3184 return reflect->int_field(_slot_offset);
3185 }
3186
3187 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3188 reflect->int_field_put(_slot_offset, value);
3189 }
3190
3191 int java_lang_reflect_Field::modifiers(oop field) {
3192 return field->int_field(_modifiers_offset);
3193 }
3194
3195 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3196 field->int_field_put(_modifiers_offset, value);
3197 }
3198
3199 void java_lang_reflect_Field::set_trusted_final(oop field) {
3200 field->bool_field_put(_trusted_final_offset, true);
3201 }
3202
3203 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3204 field->obj_field_put(_signature_offset, value);
3205 }
3206
3207 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3208 field->obj_field_put(_annotations_offset, value);
3209 }
3210
3211 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3212 // Allocate java.lang.reflect.RecordComponent instance
3213 HandleMark hm(THREAD);
3214 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3215 assert(ik != NULL, "must be loaded");
3216 ik->initialize(CHECK_NULL);
3217
3218 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3219
3220 Handle decl_class(THREAD, holder->java_mirror());
3221 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3222
3223 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3224 oop component_name = StringTable::intern(name, CHECK_NULL);
3225 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3226
3227 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3228 Handle component_type_h =
3229 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3230 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3231
3232 Method* accessor_method = NULL;
3233 {
3234 // Prepend "()" to type to create the full method signature.
3235 ResourceMark rm(THREAD);
3236 int sig_len = type->utf8_length() + 3; // "()" and null char
3237 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3238 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3239 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3240 accessor_method = holder->find_instance_method(name, full_sig, Klass::find_private);
3241 }
3242
3243 if (accessor_method != NULL) {
3244 methodHandle method(THREAD, accessor_method);
3245 oop m = Reflection::new_method(method, false, CHECK_NULL);
3246 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3247 } else {
3248 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3249 }
3250
3251 int sig_index = component->generic_signature_index();
3252 if (sig_index > 0) {
3253 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3254 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3255 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3256 } else {
3257 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3258 }
3259
3260 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3261 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3262
3263 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3264 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3265
3266 return element();
3267 }
3268
3269 int reflect_ConstantPool::_oop_offset;
3270
3271 #define CONSTANTPOOL_FIELDS_DO(macro) \
3272 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3273
3274 void reflect_ConstantPool::compute_offsets() {
3275 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3276 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3277 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3278 }
3279
3280 #if INCLUDE_CDS
3281 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3282 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3283 }
3284 #endif
3285
3286 int java_lang_reflect_Parameter::_name_offset;
3287 int java_lang_reflect_Parameter::_modifiers_offset;
3288 int java_lang_reflect_Parameter::_index_offset;
3289 int java_lang_reflect_Parameter::_executable_offset;
3290
3291 #define PARAMETER_FIELDS_DO(macro) \
3292 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3293 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3294 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3295 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3296
3297 void java_lang_reflect_Parameter::compute_offsets() {
3298 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3299 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3300 }
3301
3302 #if INCLUDE_CDS
3303 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3304 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3305 }
3306 #endif
3307
3308 Handle java_lang_reflect_Parameter::create(TRAPS) {
3309 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3310 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3311 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3312 InstanceKlass* ik = InstanceKlass::cast(k);
3313 // Ensure it is initialized
3314 ik->initialize(CHECK_NH);
3315 return ik->allocate_instance_handle(THREAD);
3316 }
3317
3318 oop java_lang_reflect_Parameter::name(oop param) {
3319 return param->obj_field(_name_offset);
3320 }
3321
3322 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3323 param->obj_field_put(_name_offset, value);
3324 }
3325
3326 int java_lang_reflect_Parameter::modifiers(oop param) {
3327 return param->int_field(_modifiers_offset);
3328 }
3329
3330 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3331 param->int_field_put(_modifiers_offset, value);
3332 }
3333
3334 int java_lang_reflect_Parameter::index(oop param) {
3335 return param->int_field(_index_offset);
3336 }
3337
3338 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3339 param->int_field_put(_index_offset, value);
3340 }
3341
3342 oop java_lang_reflect_Parameter::executable(oop param) {
3343 return param->obj_field(_executable_offset);
3344 }
3345
3346 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3347 param->obj_field_put(_executable_offset, value);
3348 }
3349
3350 // java_lang_Module
3351
3352 int java_lang_Module::_loader_offset;
3353 int java_lang_Module::_name_offset;
3354 int java_lang_Module::_module_entry_offset;
3355
3356 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3357 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3358 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3359 vmSymbols::java_lang_module_init_signature(),
3360 loader, module_name, CHECK_NH);
3361 }
3362
3363 #define MODULE_FIELDS_DO(macro) \
3364 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3365 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3366
3367 void java_lang_Module::compute_offsets() {
3368 InstanceKlass* k = SystemDictionary::Module_klass();
3369 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3370 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3371 }
3372
3373 #if INCLUDE_CDS
3374 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3375 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3376 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3377 }
3378 #endif
3379
3380 oop java_lang_Module::loader(oop module) {
3381 return module->obj_field(_loader_offset);
3382 }
3383
3384 void java_lang_Module::set_loader(oop module, oop value) {
3385 module->obj_field_put(_loader_offset, value);
3386 }
3387
3388 oop java_lang_Module::name(oop module) {
3389 return module->obj_field(_name_offset);
3390 }
3391
3392 void java_lang_Module::set_name(oop module, oop value) {
3393 module->obj_field_put(_name_offset, value);
3394 }
3395
3396 ModuleEntry* java_lang_Module::module_entry(oop module) {
3397 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3398 assert(module != NULL, "module can't be null");
3399 assert(oopDesc::is_oop(module), "module must be oop");
3400
3401 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3402 if (module_entry == NULL) {
3403 // If the inject field containing the ModuleEntry* is null then return the
3404 // class loader's unnamed module.
3405 oop loader = java_lang_Module::loader(module);
3406 Handle h_loader = Handle(Thread::current(), loader);
3407 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3408 return loader_cld->unnamed_module();
3409 }
3410 return module_entry;
3411 }
3412
3413 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3414 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3415 assert(module != NULL, "module can't be null");
3416 assert(oopDesc::is_oop(module), "module must be oop");
3417 module->address_field_put(_module_entry_offset, (address)module_entry);
3418 }
3419
3420 Handle reflect_ConstantPool::create(TRAPS) {
3421 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3422 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3423 // Ensure it is initialized
3424 k->initialize(CHECK_NH);
3425 return k->allocate_instance_handle(THREAD);
3426 }
3427
3428
3429 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3430 oop mirror = value->pool_holder()->java_mirror();
3431 // Save the mirror to get back the constant pool.
3432 reflect->obj_field_put(_oop_offset, mirror);
3433 }
3434
3435 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3436
3437 oop mirror = reflect->obj_field(_oop_offset);
3438 Klass* k = java_lang_Class::as_Klass(mirror);
3439 assert(k->is_instance_klass(), "Must be");
3440
3441 // Get the constant pool back from the klass. Since class redefinition
3442 // merges the new constant pool into the old, this is essentially the
3443 // same constant pool as the original. If constant pool merging is
3444 // no longer done in the future, this will have to change to save
3445 // the original.
3446 return InstanceKlass::cast(k)->constants();
3447 }
3448
3449 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3450
3451 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3452 macro(_base_offset, k, "base", object_signature, false)
3453
3454 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3455 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3456 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3457 }
3458
3459 #if INCLUDE_CDS
3460 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3461 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3462 }
3463 #endif
3464
3465 // Support for java_lang_ref_Reference
3466
3467 bool java_lang_ref_Reference::_offsets_initialized;
3468
3469 int java_lang_ref_Reference::_referent_offset;
3470 int java_lang_ref_Reference::_queue_offset;
3471 int java_lang_ref_Reference::_next_offset;
3472 int java_lang_ref_Reference::_discovered_offset;
3473
3474 #define REFERENCE_FIELDS_DO(macro) \
3475 macro(_referent_offset, k, "referent", object_signature, false); \
3476 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3477 macro(_next_offset, k, "next", reference_signature, false); \
3478 macro(_discovered_offset, k, "discovered", reference_signature, false);
3479
3480 void java_lang_ref_Reference::compute_offsets() {
3481 if (_offsets_initialized) {
3482 return;
3483 }
3484 _offsets_initialized = true;
3485 InstanceKlass* k = SystemDictionary::Reference_klass();
3486 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3487 }
3488
3489 #if INCLUDE_CDS
3490 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3491 f->do_bool(&_offsets_initialized);
3492 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3493 }
3494 #endif
3495
3496 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3497 assert(obj != NULL, "sanity");
3498 if (offset != _referent_offset) {
3499 return false;
3500 }
3501
3502 Klass* k = obj->klass();
3503 if (!k->is_instance_klass()) {
3504 return false;
3505 }
3506
3507 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3508 bool is_reference = ik->reference_type() != REF_NONE;
3509 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3510 return is_reference;
3511 }
3512
3513 int java_lang_boxing_object::_value_offset;
3514 int java_lang_boxing_object::_long_value_offset;
3515
3516 #define BOXING_FIELDS_DO(macro) \
3517 macro(_value_offset, integerKlass, "value", int_signature, false); \
3518 macro(_long_value_offset, longKlass, "value", long_signature, false);
3519
3520 void java_lang_boxing_object::compute_offsets() {
3521 InstanceKlass* integerKlass = SystemDictionary::Integer_klass();
3522 InstanceKlass* longKlass = SystemDictionary::Long_klass();
3523 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3524 }
3525
3526 #if INCLUDE_CDS
3527 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3528 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3529 }
3530 #endif
3531
3532 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3533 Klass* k = SystemDictionary::box_klass(type);
3534 if (k == NULL) return NULL;
3535 InstanceKlass* ik = InstanceKlass::cast(k);
3536 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3537 return ik->allocate_instance(THREAD);
3538 }
3539
3540
3541 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3542 oop box = initialize_and_allocate(type, CHECK_NULL);
3543 if (box == NULL) return NULL;
3544 switch (type) {
3545 case T_BOOLEAN:
3546 box->bool_field_put(_value_offset, value->z);
3547 break;
3548 case T_CHAR:
3549 box->char_field_put(_value_offset, value->c);
3550 break;
3551 case T_FLOAT:
3552 box->float_field_put(_value_offset, value->f);
3553 break;
3554 case T_DOUBLE:
3555 box->double_field_put(_long_value_offset, value->d);
3556 break;
3557 case T_BYTE:
3558 box->byte_field_put(_value_offset, value->b);
3559 break;
3560 case T_SHORT:
3561 box->short_field_put(_value_offset, value->s);
3562 break;
3563 case T_INT:
3564 box->int_field_put(_value_offset, value->i);
3565 break;
3566 case T_LONG:
3567 box->long_field_put(_long_value_offset, value->j);
3568 break;
3569 default:
3570 return NULL;
3571 }
3572 return box;
3573 }
3574
3575
3576 BasicType java_lang_boxing_object::basic_type(oop box) {
3577 if (box == NULL) return T_ILLEGAL;
3578 BasicType type = SystemDictionary::box_klass_type(box->klass());
3579 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3580 return T_ILLEGAL;
3581 return type;
3582 }
3583
3584
3585 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3586 BasicType type = SystemDictionary::box_klass_type(box->klass());
3587 switch (type) {
3588 case T_BOOLEAN:
3589 value->z = box->bool_field(_value_offset);
3590 break;
3591 case T_CHAR:
3592 value->c = box->char_field(_value_offset);
3593 break;
3594 case T_FLOAT:
3595 value->f = box->float_field(_value_offset);
3596 break;
3597 case T_DOUBLE:
3598 value->d = box->double_field(_long_value_offset);
3599 break;
3600 case T_BYTE:
3601 value->b = box->byte_field(_value_offset);
3602 break;
3603 case T_SHORT:
3604 value->s = box->short_field(_value_offset);
3605 break;
3606 case T_INT:
3607 value->i = box->int_field(_value_offset);
3608 break;
3609 case T_LONG:
3610 value->j = box->long_field(_long_value_offset);
3611 break;
3612 default:
3613 return T_ILLEGAL;
3614 } // end switch
3615 return type;
3616 }
3617
3618
3619 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3620 BasicType type = SystemDictionary::box_klass_type(box->klass());
3621 switch (type) {
3622 case T_BOOLEAN:
3623 box->bool_field_put(_value_offset, value->z);
3624 break;
3625 case T_CHAR:
3626 box->char_field_put(_value_offset, value->c);
3627 break;
3628 case T_FLOAT:
3629 box->float_field_put(_value_offset, value->f);
3630 break;
3631 case T_DOUBLE:
3632 box->double_field_put(_long_value_offset, value->d);
3633 break;
3634 case T_BYTE:
3635 box->byte_field_put(_value_offset, value->b);
3636 break;
3637 case T_SHORT:
3638 box->short_field_put(_value_offset, value->s);
3639 break;
3640 case T_INT:
3641 box->int_field_put(_value_offset, value->i);
3642 break;
3643 case T_LONG:
3644 box->long_field_put(_long_value_offset, value->j);
3645 break;
3646 default:
3647 return T_ILLEGAL;
3648 } // end switch
3649 return type;
3650 }
3651
3652
3653 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3654 switch (type) {
3655 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3656 case T_CHAR: st->print("%d", value->c); break;
3657 case T_BYTE: st->print("%d", value->b); break;
3658 case T_SHORT: st->print("%d", value->s); break;
3659 case T_INT: st->print("%d", value->i); break;
3660 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3661 case T_FLOAT: st->print("%f", value->f); break;
3662 case T_DOUBLE: st->print("%lf", value->d); break;
3663 default: st->print("type %d?", type); break;
3664 }
3665 }
3666
3667
3668 // Support for java_lang_ref_SoftReference
3669 //
3670
3671 int java_lang_ref_SoftReference::_timestamp_offset;
3672 int java_lang_ref_SoftReference::_static_clock_offset;
3673
3674 #define SOFTREFERENCE_FIELDS_DO(macro) \
3675 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3676 macro(_static_clock_offset, k, "clock", long_signature, true)
3677
3678 void java_lang_ref_SoftReference::compute_offsets() {
3679 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3680 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3681 }
3682
3683 #if INCLUDE_CDS
3684 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3685 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3686 }
3687 #endif
3688
3689 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3690 return ref->long_field(_timestamp_offset);
3691 }
3692
3693 jlong java_lang_ref_SoftReference::clock() {
3694 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3695 oop base = ik->static_field_base_raw();
3696 return base->long_field(_static_clock_offset);
3697 }
3698
3699 void java_lang_ref_SoftReference::set_clock(jlong value) {
3700 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3701 oop base = ik->static_field_base_raw();
3702 base->long_field_put(_static_clock_offset, value);
3703 }
3704
3705 // Support for java_lang_invoke_DirectMethodHandle
3706
3707 int java_lang_invoke_DirectMethodHandle::_member_offset;
3708
3709 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3710 oop member_name = NULL;
3711 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3712 "a DirectMethodHandle oop is expected");
3713 return dmh->obj_field(_member_offset);
3714 }
3715
3716 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3717 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3718
3719 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3720 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3721 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3722 }
3723
3724 #if INCLUDE_CDS
3725 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3726 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3727 }
3728 #endif
3729
3730 // Support for java_lang_invoke_MethodHandle
3731
3732 int java_lang_invoke_MethodHandle::_type_offset;
3733 int java_lang_invoke_MethodHandle::_form_offset;
3734
3735 int java_lang_invoke_MemberName::_clazz_offset;
3736 int java_lang_invoke_MemberName::_name_offset;
3737 int java_lang_invoke_MemberName::_type_offset;
3738 int java_lang_invoke_MemberName::_flags_offset;
3739 int java_lang_invoke_MemberName::_method_offset;
3740 int java_lang_invoke_MemberName::_vmindex_offset;
3741
3742 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3743 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3744
3745 int java_lang_invoke_LambdaForm::_vmentry_offset;
3746
3747 #define METHODHANDLE_FIELDS_DO(macro) \
3748 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3749 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3750
3751 void java_lang_invoke_MethodHandle::compute_offsets() {
3752 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3753 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3754 }
3755
3756 #if INCLUDE_CDS
3757 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3758 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3759 }
3760 #endif
3761
3762 #define MEMBERNAME_FIELDS_DO(macro) \
3763 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3764 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3765 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3766 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3767 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3768
3769 void java_lang_invoke_MemberName::compute_offsets() {
3770 InstanceKlass* k = SystemDictionary::MemberName_klass();
3771 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3772 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3773 }
3774
3775 #if INCLUDE_CDS
3776 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3777 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3778 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3779 }
3780 #endif
3781
3782 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3783 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3784 assert(k != NULL, "jdk mismatch");
3785 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3786 }
3787
3788 #if INCLUDE_CDS
3789 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3790 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3791 }
3792 #endif
3793
3794 #define LAMBDAFORM_FIELDS_DO(macro) \
3795 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3796
3797 void java_lang_invoke_LambdaForm::compute_offsets() {
3798 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3799 assert (k != NULL, "jdk mismatch");
3800 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3801 }
3802
3803 #if INCLUDE_CDS
3804 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3805 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3806 }
3807 #endif
3808
3809 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3810 return obj != NULL && is_subclass(obj->klass());
3811 }
3812
3813
3814 oop java_lang_invoke_MethodHandle::type(oop mh) {
3815 return mh->obj_field(_type_offset);
3816 }
3817
3818 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3819 mh->obj_field_put(_type_offset, mtype);
3820 }
3821
3822 oop java_lang_invoke_MethodHandle::form(oop mh) {
3823 assert(_form_offset != 0, "");
3824 return mh->obj_field(_form_offset);
3825 }
3826
3827 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3828 assert(_form_offset != 0, "");
3829 mh->obj_field_put(_form_offset, lform);
3830 }
3831
3832 /// MemberName accessors
3833
3834 oop java_lang_invoke_MemberName::clazz(oop mname) {
3835 assert(is_instance(mname), "wrong type");
3836 return mname->obj_field(_clazz_offset);
3837 }
3838
3839 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3840 assert(is_instance(mname), "wrong type");
3841 mname->obj_field_put(_clazz_offset, clazz);
3842 }
3843
3844 oop java_lang_invoke_MemberName::name(oop mname) {
3845 assert(is_instance(mname), "wrong type");
3846 return mname->obj_field(_name_offset);
3847 }
3848
3849 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3850 assert(is_instance(mname), "wrong type");
3851 mname->obj_field_put(_name_offset, name);
3852 }
3853
3854 oop java_lang_invoke_MemberName::type(oop mname) {
3855 assert(is_instance(mname), "wrong type");
3856 return mname->obj_field(_type_offset);
3857 }
3858
3859 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3860 assert(is_instance(mname), "wrong type");
3861 mname->obj_field_put(_type_offset, type);
3862 }
3863
3864 int java_lang_invoke_MemberName::flags(oop mname) {
3865 assert(is_instance(mname), "wrong type");
3866 return mname->int_field(_flags_offset);
3867 }
3868
3869 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3870 assert(is_instance(mname), "wrong type");
3871 mname->int_field_put(_flags_offset, flags);
3872 }
3873
3874
3875 // Return vmtarget from ResolvedMethodName method field through indirection
3876 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3877 assert(is_instance(mname), "wrong type");
3878 oop method = mname->obj_field(_method_offset);
3879 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3880 }
3881
3882 bool java_lang_invoke_MemberName::is_method(oop mname) {
3883 assert(is_instance(mname), "must be MemberName");
3884 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3885 }
3886
3887 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3888 assert(is_instance(mname), "wrong type");
3889 mname->obj_field_put(_method_offset, resolved_method);
3890 }
3891
3892 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3893 assert(is_instance(mname), "wrong type");
3894 return (intptr_t) mname->address_field(_vmindex_offset);
3895 }
3896
3897 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3898 assert(is_instance(mname), "wrong type");
3899 mname->address_field_put(_vmindex_offset, (address) index);
3900 }
3901
3902
3903 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3904 assert(is_instance(resolved_method), "wrong type");
3905 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3906 assert(m->is_method(), "must be");
3907 return m;
3908 }
3909
3910 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3911 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3912 assert(is_instance(resolved_method), "wrong type");
3913 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3914 }
3915
3916 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3917 assert(is_instance(resolved_method), "wrong type");
3918 resolved_method->obj_field_put(_vmholder_offset, holder);
3919 }
3920
3921 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3922 const Method* method = m();
3923
3924 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3925 oop resolved_method = ResolvedMethodTable::find_method(method);
3926 if (resolved_method != NULL) {
3927 return resolved_method;
3928 }
3929
3930 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3931 if (!k->is_initialized()) {
3932 k->initialize(CHECK_NULL);
3933 }
3934
3935 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3936
3937 NoSafepointVerifier nsv;
3938
3939 if (method->is_old()) {
3940 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3941 method->get_new_method();
3942 }
3943
3944 InstanceKlass* holder = method->method_holder();
3945
3946 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3947 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3948 // distinct loaders) to ensure the metadata is kept alive.
3949 // This mirror may be different than the one in clazz field.
3950 set_vmholder(new_resolved_method, holder->java_mirror());
3951
3952 // Set flag in class to indicate this InstanceKlass has entries in the table
3953 // to avoid walking table during redefinition if none of the redefined classes
3954 // have any membernames in the table.
3955 holder->set_has_resolved_methods();
3956
3957 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3958 }
3959
3960 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3961 assert(is_instance(lform), "wrong type");
3962 return lform->obj_field(_vmentry_offset);
3963 }
3964
3965
3966 // Support for java_lang_invoke_MethodType
3967
3968 int java_lang_invoke_MethodType::_rtype_offset;
3969 int java_lang_invoke_MethodType::_ptypes_offset;
3970
3971 #define METHODTYPE_FIELDS_DO(macro) \
3972 macro(_rtype_offset, k, "rtype", class_signature, false); \
3973 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3974
3975 void java_lang_invoke_MethodType::compute_offsets() {
3976 InstanceKlass* k = SystemDictionary::MethodType_klass();
3977 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3978 }
3979
3980 #if INCLUDE_CDS
3981 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3982 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3983 }
3984 #endif
3985
3986 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3987 st->print("(");
3988 objArrayOop pts = ptypes(mt);
3989 for (int i = 0, limit = pts->length(); i < limit; i++) {
3990 java_lang_Class::print_signature(pts->obj_at(i), st);
3991 }
3992 st->print(")");
3993 java_lang_Class::print_signature(rtype(mt), st);
3994 }
3995
3996 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3997 ResourceMark rm;
3998 stringStream buffer(128);
3999 print_signature(mt, &buffer);
4000 const char* sigstr = buffer.base();
4001 int siglen = (int) buffer.size();
4002 Symbol *name;
4003 if (!intern_if_not_found) {
4004 name = SymbolTable::probe(sigstr, siglen);
4005 } else {
4006 name = SymbolTable::new_symbol(sigstr, siglen);
4007 }
4008 return name;
4009 }
4010
4011 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4012 if (mt1 == mt2)
4013 return true;
4014 if (rtype(mt1) != rtype(mt2))
4015 return false;
4016 if (ptype_count(mt1) != ptype_count(mt2))
4017 return false;
4018 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4019 if (ptype(mt1, i) != ptype(mt2, i))
4020 return false;
4021 }
4022 return true;
4023 }
4024
4025 oop java_lang_invoke_MethodType::rtype(oop mt) {
4026 assert(is_instance(mt), "must be a MethodType");
4027 return mt->obj_field(_rtype_offset);
4028 }
4029
4030 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4031 assert(is_instance(mt), "must be a MethodType");
4032 return (objArrayOop) mt->obj_field(_ptypes_offset);
4033 }
4034
4035 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4036 return ptypes(mt)->obj_at(idx);
4037 }
4038
4039 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4040 return ptypes(mt)->length();
4041 }
4042
4043 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4044 objArrayOop pts = ptypes(mt);
4045 int count = pts->length();
4046 int slots = 0;
4047 for (int i = 0; i < count; i++) {
4048 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4049 slots += type2size[bt];
4050 }
4051 return slots;
4052 }
4053
4054 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4055 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4056 return type2size[bt];
4057 }
4058
4059
4060 // Support for java_lang_invoke_CallSite
4061
4062 int java_lang_invoke_CallSite::_target_offset;
4063 int java_lang_invoke_CallSite::_context_offset;
4064
4065 #define CALLSITE_FIELDS_DO(macro) \
4066 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4067 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4068
4069 void java_lang_invoke_CallSite::compute_offsets() {
4070 InstanceKlass* k = SystemDictionary::CallSite_klass();
4071 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4072 }
4073
4074 #if INCLUDE_CDS
4075 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4076 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4077 }
4078 #endif
4079
4080 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4081 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4082
4083 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4084 return dep_oop;
4085 }
4086
4087 // Support for java_lang_invoke_ConstantCallSite
4088
4089 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4090
4091 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4092 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4093
4094 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4095 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
4096 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4097 }
4098
4099 #if INCLUDE_CDS
4100 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4101 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4102 }
4103 #endif
4104
4105 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4106
4107 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4108 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4109
4110 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4111 InstanceKlass* k = SystemDictionary::Context_klass();
4112 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4113 }
4114
4115 #if INCLUDE_CDS
4116 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4117 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4118 }
4119 #endif
4120
4121 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4122 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4123 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4124 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4125 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4126 return dep_ctx;
4127 }
4128
4129 // Support for java_security_AccessControlContext
4130
4131 int java_security_AccessControlContext::_context_offset;
4132 int java_security_AccessControlContext::_privilegedContext_offset;
4133 int java_security_AccessControlContext::_isPrivileged_offset;
4134 int java_security_AccessControlContext::_isAuthorized_offset;
4135
4136 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4137 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4138 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4139 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4140 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4141
4142 void java_security_AccessControlContext::compute_offsets() {
4143 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4144 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4145 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4146 }
4147
4148 #if INCLUDE_CDS
4149 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4150 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4151 }
4152 #endif
4153
4154 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4155 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4156 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4157 // Ensure klass is initialized
4158 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4159 // Allocate result
4160 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4161 // Fill in values
4162 result->obj_field_put(_context_offset, context());
4163 result->obj_field_put(_privilegedContext_offset, privileged_context());
4164 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4165 // whitelist AccessControlContexts created by the JVM
4166 result->bool_field_put(_isAuthorized_offset, true);
4167 return result;
4168 }
4169
4170
4171 // Support for java_lang_ClassLoader
4172
4173 int java_lang_ClassLoader::_loader_data_offset;
4174 int java_lang_ClassLoader::_parallelCapable_offset;
4175 int java_lang_ClassLoader::_name_offset;
4176 int java_lang_ClassLoader::_nameAndId_offset;
4177 int java_lang_ClassLoader::_unnamedModule_offset;
4178 int java_lang_ClassLoader::_parent_offset;
4179
4180 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4181 assert(loader != NULL, "loader must not be NULL");
4182 assert(oopDesc::is_oop(loader), "loader must be oop");
4183 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4184 }
4185
4186 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4187 assert(loader != NULL, "loader must not be NULL");
4188 assert(oopDesc::is_oop(loader), "loader must be oop");
4189 return RawAccess<>::load_at(loader, _loader_data_offset);
4190 }
4191
4192 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4193 assert(loader != NULL, "loader must not be NULL");
4194 assert(oopDesc::is_oop(loader), "loader must be oop");
4195 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4196 }
4197
4198 #define CLASSLOADER_FIELDS_DO(macro) \
4199 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4200 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4201 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4202 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4203 macro(_parent_offset, k1, "parent", classloader_signature, false)
4204
4205 void java_lang_ClassLoader::compute_offsets() {
4206 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4207 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4208
4209 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4210 }
4211
4212 #if INCLUDE_CDS
4213 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4214 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4215 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4216 }
4217 #endif
4218
4219 oop java_lang_ClassLoader::parent(oop loader) {
4220 assert(is_instance(loader), "loader must be oop");
4221 return loader->obj_field(_parent_offset);
4222 }
4223
4224 // Returns the name field of this class loader. If the name field has not
4225 // been set, null will be returned.
4226 oop java_lang_ClassLoader::name(oop loader) {
4227 assert(is_instance(loader), "loader must be oop");
4228 return loader->obj_field(_name_offset);
4229 }
4230
4231 // Returns the nameAndId field of this class loader. The format is
4232 // as follows:
4233 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4234 // If the defining loader has no name then <qualified-class-name> @<id>
4235 // If built-in loader, then omit '@<id>' as there is only one instance.
4236 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4237 oop java_lang_ClassLoader::nameAndId(oop loader) {
4238 assert(is_instance(loader), "loader must be oop");
4239 return loader->obj_field(_nameAndId_offset);
4240 }
4241
4242 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4243 assert(is_instance(loader), "loader must be oop");
4244 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4245 oop acl = loader;
4246 debug_only(jint loop_count = 0);
4247 // This loop taken verbatim from ClassLoader.java:
4248 do {
4249 acl = parent(acl);
4250 if (cl == acl) {
4251 return true;
4252 }
4253 assert(++loop_count > 0, "loop_count overflow");
4254 } while (acl != NULL);
4255 return false;
4256 }
4257
4258 bool java_lang_ClassLoader::is_instance(oop obj) {
4259 return obj != NULL && is_subclass(obj->klass());
4260 }
4261
4262
4263 // For class loader classes, parallelCapable defined
4264 // based on non-null field
4265 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4266 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4267 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4268 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4269 }
4270
4271 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4272 // Fix for 4474172; see evaluation for more details
4273 loader = non_reflection_class_loader(loader);
4274
4275 oop cl = SystemDictionary::java_system_loader();
4276 while(cl != NULL) {
4277 if (cl == loader) return true;
4278 cl = parent(cl);
4279 }
4280 return false;
4281 }
4282
4283 // Return true if this is one of the class loaders associated with
4284 // the generated bytecodes for reflection.
4285 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4286 if (loader != NULL) {
4287 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4288 // This might be null in non-1.4 JDKs
4289 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4290 }
4291 return false;
4292 }
4293
4294 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4295 // See whether this is one of the class loaders associated with
4296 // the generated bytecodes for reflection, and if so, "magically"
4297 // delegate to its parent to prevent class loading from occurring
4298 // in places where applications using reflection didn't expect it.
4299 if (is_reflection_class_loader(loader)) {
4300 return parent(loader);
4301 }
4302 return loader;
4303 }
4304
4305 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4306 assert(is_instance(loader), "loader must be oop");
4307 return loader->obj_field(_unnamedModule_offset);
4308 }
4309
4310 // Support for java_lang_System
4311 //
4312
4313 int java_lang_System::_static_in_offset;
4314 int java_lang_System::_static_out_offset;
4315 int java_lang_System::_static_err_offset;
4316 int java_lang_System::_static_security_offset;
4317
4318 #define SYSTEM_FIELDS_DO(macro) \
4319 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4320 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4321 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4322 macro(_static_security_offset, k, "security", security_manager_signature, true)
4323
4324 void java_lang_System::compute_offsets() {
4325 InstanceKlass* k = SystemDictionary::System_klass();
4326 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4327 }
4328
4329 #if INCLUDE_CDS
4330 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4331 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4332 }
4333 #endif
4334
4335 // Support for jdk_internal_misc_UnsafeConstants
4336 //
4337 class UnsafeConstantsFixup : public FieldClosure {
4338 private:
4339 int _address_size;
4340 int _page_size;
4341 bool _big_endian;
4342 bool _use_unaligned_access;
4343 int _data_cache_line_flush_size;
4344 public:
4345 UnsafeConstantsFixup() {
4346 // round up values for all static final fields
4347 _address_size = sizeof(void*);
4348 _page_size = os::vm_page_size();
4349 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4350 _use_unaligned_access = UseUnalignedAccesses;
4351 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4352 }
4353
4354 void do_field(fieldDescriptor* fd) {
4355 oop mirror = fd->field_holder()->java_mirror();
4356 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4357 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4358 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4359 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4360 if (fd->name() == vmSymbols::address_size_name()) {
4361 mirror->int_field_put(fd->offset(), _address_size);
4362 } else if (fd->name() == vmSymbols::page_size_name()) {
4363 mirror->int_field_put(fd->offset(), _page_size);
4364 } else if (fd->name() == vmSymbols::big_endian_name()) {
4365 mirror->bool_field_put(fd->offset(), _big_endian);
4366 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4367 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4368 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4369 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4370 } else {
4371 assert(false, "unexpected UnsafeConstants field");
4372 }
4373 }
4374 };
4375
4376 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4377 UnsafeConstantsFixup fixup;
4378 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4379 }
4380
4381
4382 // java_lang_StackTraceElement
4383
4384 int java_lang_StackTraceElement::_methodName_offset;
4385 int java_lang_StackTraceElement::_fileName_offset;
4386 int java_lang_StackTraceElement::_lineNumber_offset;
4387 int java_lang_StackTraceElement::_moduleName_offset;
4388 int java_lang_StackTraceElement::_moduleVersion_offset;
4389 int java_lang_StackTraceElement::_classLoaderName_offset;
4390 int java_lang_StackTraceElement::_declaringClass_offset;
4391 int java_lang_StackTraceElement::_declaringClassObject_offset;
4392
4393 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4394 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4395 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4396 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4397 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4398 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4399 macro(_methodName_offset, k, "methodName", string_signature, false); \
4400 macro(_fileName_offset, k, "fileName", string_signature, false); \
4401 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4402
4403 // Support for java_lang_StackTraceElement
4404 void java_lang_StackTraceElement::compute_offsets() {
4405 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4406 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4407 }
4408
4409 #if INCLUDE_CDS
4410 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4411 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4412 }
4413 #endif
4414
4415 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4416 element->obj_field_put(_fileName_offset, value);
4417 }
4418
4419 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4420 element->obj_field_put(_declaringClass_offset, value);
4421 }
4422
4423 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4424 element->obj_field_put(_methodName_offset, value);
4425 }
4426
4427 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4428 element->int_field_put(_lineNumber_offset, value);
4429 }
4430
4431 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4432 element->obj_field_put(_moduleName_offset, value);
4433 }
4434
4435 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4436 element->obj_field_put(_moduleVersion_offset, value);
4437 }
4438
4439 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4440 element->obj_field_put(_classLoaderName_offset, value);
4441 }
4442
4443 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4444 element->obj_field_put(_declaringClassObject_offset, value);
4445 }
4446
4447
4448 // java_lang_AssertionStatusDirectives
4449
4450 int java_lang_AssertionStatusDirectives::_classes_offset;
4451 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4452 int java_lang_AssertionStatusDirectives::_packages_offset;
4453 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4454 int java_lang_AssertionStatusDirectives::_deflt_offset;
4455
4456 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4457 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4458 macro(_classes_offset, k, "classes", string_array_signature, false); \
4459 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4460 macro(_packages_offset, k, "packages", string_array_signature, false); \
4461 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4462 macro(_deflt_offset, k, "deflt", bool_signature, false)
4463
4464 void java_lang_AssertionStatusDirectives::compute_offsets() {
4465 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4466 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4467 }
4468
4469 #if INCLUDE_CDS
4470 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4471 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4472 }
4473 #endif
4474
4475 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4476 o->obj_field_put(_classes_offset, val);
4477 }
4478
4479 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4480 o->obj_field_put(_classEnabled_offset, val);
4481 }
4482
4483 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4484 o->obj_field_put(_packages_offset, val);
4485 }
4486
4487 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4488 o->obj_field_put(_packageEnabled_offset, val);
4489 }
4490
4491 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4492 o->bool_field_put(_deflt_offset, val);
4493 }
4494
4495
4496 // Support for intrinsification of java.nio.Buffer.checkIndex
4497
4498 int java_nio_Buffer::_limit_offset;
4499
4500 #define BUFFER_FIELDS_DO(macro) \
4501 macro(_limit_offset, k, "limit", int_signature, false)
4502
4503 void java_nio_Buffer::compute_offsets() {
4504 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4505 assert(k != NULL, "must be loaded in 1.4+");
4506 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4507 }
4508
4509 #if INCLUDE_CDS
4510 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4511 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4512 }
4513 #endif
4514
4515 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4516
4517 #define AOS_FIELDS_DO(macro) \
4518 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4519
4520 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4521 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4522 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4523 }
4524
4525 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4526 assert(_owner_offset != 0, "Must be initialized");
4527 return obj->obj_field(_owner_offset);
4528 }
4529
4530 #if INCLUDE_CDS
4531 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4532 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4533 }
4534 #endif
4535
4536 int java_lang_Integer_IntegerCache::_static_cache_offset;
4537 int java_lang_Long_LongCache::_static_cache_offset;
4538 int java_lang_Character_CharacterCache::_static_cache_offset;
4539 int java_lang_Short_ShortCache::_static_cache_offset;
4540 int java_lang_Byte_ByteCache::_static_cache_offset;
4541
4542 #define INTEGER_CACHE_FIELDS_DO(macro) \
4543 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4544
4545 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4546 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4547 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4548 }
4549
4550 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4551 oop base = ik->static_field_base_raw();
4552 return objArrayOop(base->obj_field(_static_cache_offset));
4553 }
4554
4555 Symbol* java_lang_Integer_IntegerCache::symbol() {
4556 return vmSymbols::java_lang_Integer_IntegerCache();
4557 }
4558
4559 #if INCLUDE_CDS
4560 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4561 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4562 }
4563 #endif
4564 #undef INTEGER_CACHE_FIELDS_DO
4565
4566 jint java_lang_Integer::value(oop obj) {
4567 jvalue v;
4568 java_lang_boxing_object::get_value(obj, &v);
4569 return v.i;
4570 }
4571
4572 #define LONG_CACHE_FIELDS_DO(macro) \
4573 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4574
4575 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4576 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4577 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4578 }
4579
4580 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4581 oop base = ik->static_field_base_raw();
4582 return objArrayOop(base->obj_field(_static_cache_offset));
4583 }
4584
4585 Symbol* java_lang_Long_LongCache::symbol() {
4586 return vmSymbols::java_lang_Long_LongCache();
4587 }
4588
4589 #if INCLUDE_CDS
4590 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4591 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4592 }
4593 #endif
4594 #undef LONG_CACHE_FIELDS_DO
4595
4596 jlong java_lang_Long::value(oop obj) {
4597 jvalue v;
4598 java_lang_boxing_object::get_value(obj, &v);
4599 return v.j;
4600 }
4601
4602 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4603 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4604
4605 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4606 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4607 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4608 }
4609
4610 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4611 oop base = ik->static_field_base_raw();
4612 return objArrayOop(base->obj_field(_static_cache_offset));
4613 }
4614
4615 Symbol* java_lang_Character_CharacterCache::symbol() {
4616 return vmSymbols::java_lang_Character_CharacterCache();
4617 }
4618
4619 #if INCLUDE_CDS
4620 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4621 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4622 }
4623 #endif
4624 #undef CHARACTER_CACHE_FIELDS_DO
4625
4626 jchar java_lang_Character::value(oop obj) {
4627 jvalue v;
4628 java_lang_boxing_object::get_value(obj, &v);
4629 return v.c;
4630 }
4631
4632 #define SHORT_CACHE_FIELDS_DO(macro) \
4633 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4634
4635 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4636 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4637 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4638 }
4639
4640 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4641 oop base = ik->static_field_base_raw();
4642 return objArrayOop(base->obj_field(_static_cache_offset));
4643 }
4644
4645 Symbol* java_lang_Short_ShortCache::symbol() {
4646 return vmSymbols::java_lang_Short_ShortCache();
4647 }
4648
4649 #if INCLUDE_CDS
4650 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4651 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4652 }
4653 #endif
4654 #undef SHORT_CACHE_FIELDS_DO
4655
4656 jshort java_lang_Short::value(oop obj) {
4657 jvalue v;
4658 java_lang_boxing_object::get_value(obj, &v);
4659 return v.s;
4660 }
4661
4662 #define BYTE_CACHE_FIELDS_DO(macro) \
4663 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4664
4665 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4666 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4667 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4668 }
4669
4670 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4671 oop base = ik->static_field_base_raw();
4672 return objArrayOop(base->obj_field(_static_cache_offset));
4673 }
4674
4675 Symbol* java_lang_Byte_ByteCache::symbol() {
4676 return vmSymbols::java_lang_Byte_ByteCache();
4677 }
4678
4679 #if INCLUDE_CDS
4680 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4681 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4682 }
4683 #endif
4684 #undef BYTE_CACHE_FIELDS_DO
4685
4686 jbyte java_lang_Byte::value(oop obj) {
4687 jvalue v;
4688 java_lang_boxing_object::get_value(obj, &v);
4689 return v.b;
4690 }
4691
4692 int java_lang_Boolean::_static_TRUE_offset;
4693 int java_lang_Boolean::_static_FALSE_offset;
4694
4695 #define BOOLEAN_FIELDS_DO(macro) \
4696 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4697 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4698
4699
4700 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4701 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4702 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4703 }
4704
4705 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4706 oop base = ik->static_field_base_raw();
4707 return base->obj_field(_static_TRUE_offset);
4708 }
4709
4710 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4711 oop base = ik->static_field_base_raw();
4712 return base->obj_field(_static_FALSE_offset);
4713 }
4714
4715 Symbol* java_lang_Boolean::symbol() {
4716 return vmSymbols::java_lang_Boolean();
4717 }
4718
4719 #if INCLUDE_CDS
4720 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4721 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4722 }
4723 #endif
4724 #undef BOOLEAN_CACHE_FIELDS_DO
4725
4726 jboolean java_lang_Boolean::value(oop obj) {
4727 jvalue v;
4728 java_lang_boxing_object::get_value(obj, &v);
4729 return v.z;
4730 }
4731
4732 // java_lang_reflect_RecordComponent
4733
4734 int java_lang_reflect_RecordComponent::_clazz_offset;
4735 int java_lang_reflect_RecordComponent::_name_offset;
4736 int java_lang_reflect_RecordComponent::_type_offset;
4737 int java_lang_reflect_RecordComponent::_accessor_offset;
4738 int java_lang_reflect_RecordComponent::_signature_offset;
4739 int java_lang_reflect_RecordComponent::_annotations_offset;
4740 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4741
4742 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4743 macro(_clazz_offset, k, "clazz", class_signature, false); \
4744 macro(_name_offset, k, "name", string_signature, false); \
4745 macro(_type_offset, k, "type", class_signature, false); \
4746 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4747 macro(_signature_offset, k, "signature", string_signature, false); \
4748 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4749 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4750
4751 // Support for java_lang_reflect_RecordComponent
4752 void java_lang_reflect_RecordComponent::compute_offsets() {
4753 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4754 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4755 }
4756
4757 #if INCLUDE_CDS
4758 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4759 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4760 }
4761 #endif
4762
4763 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4764 element->obj_field_put(_clazz_offset, value);
4765 }
4766
4767 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4768 element->obj_field_put(_name_offset, value);
4769 }
4770
4771 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4772 element->obj_field_put(_type_offset, value);
4773 }
4774
4775 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4776 element->obj_field_put(_accessor_offset, value);
4777 }
4778
4779 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4780 element->obj_field_put(_signature_offset, value);
4781 }
4782
4783 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4784 element->obj_field_put(_annotations_offset, value);
4785 }
4786
4787 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4788 element->obj_field_put(_typeAnnotations_offset, value);
4789 }
4790
4791 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4792
4793 // Compute field offsets of all the classes in this file
4794 void JavaClasses::compute_offsets() {
4795 if (UseSharedSpaces) {
4796 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4797 JvmtiExport::has_early_class_hook_env()),
4798 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4799 // None of the classes used by the rest of this function can be replaced by
4800 // JVMTI ClassFileLoadHook.
4801 // We are safe to use the archived offsets, which have already been restored
4802 // by JavaClasses::serialize_offsets, without computing the offsets again.
4803 return;
4804 }
4805
4806 // We have already called the compute_offsets() of the
4807 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
4808 // java_lang_ref_Reference) earlier inside SystemDictionary::resolve_well_known_classes()
4809 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4810 }
4811
4812 #if INCLUDE_CDS
4813 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4814
4815 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4816 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4817 }
4818 #endif
4819
4820 #if INCLUDE_CDS_JAVA_HEAP
4821 bool JavaClasses::is_supported_for_archiving(oop obj) {
4822 Klass* klass = obj->klass();
4823
4824 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4825 klass == SystemDictionary::Module_klass() || // Module::module_entry is malloc'ed
4826 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4827 // regular Java code. The implementation of java.lang.invoke uses generated anonymoys classes
4828 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4829 // So for now we cannot not support these classes for archiving.
4830 //
4831 // These objects typically are not referenced by static fields, but rather by resolved
4832 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4833 klass == SystemDictionary::ResolvedMethodName_klass() ||
4834 klass == SystemDictionary::MemberName_klass() ||
4835 klass == SystemDictionary::Context_klass()) {
4836 return false;
4837 }
4838
4839 return true;
4840 }
4841 #endif
4842
4843 #ifndef PRODUCT
4844
4845 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
4846
4847 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
4848 const char* field_sig) {
4849 EXCEPTION_MARK;
4850 fieldDescriptor fd;
4851 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4852 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4853 InstanceKlass* ik = InstanceKlass::cast(k);
4854 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4855 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4856 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4857 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4858 return false;
4859 }
4860 if (fd.is_static()) {
4861 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4862 return false;
4863 }
4864 if (fd.offset() == deserialized_offset ) {
4865 return true;
4866 } else {
4867 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
4868 klass_name, field_name, deserialized_offset, fd.offset());
4869 return false;
4870 }
4871 }
4872
4873 void JavaClasses::check_offsets() {
4874 bool valid = true;
4875
4876 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4877 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
4878
4879 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4880 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
4881
4882 // Boxed primitive objects (java_lang_boxing_object)
4883
4884 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4885 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4886 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4887 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4888 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4889 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4890 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4891 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4892
4893 if (!valid) vm_exit_during_initialization("Field offset verification failed");
4894 }
4895
4896 #endif // PRODUCT
4897
4898 int InjectedField::compute_offset() {
4899 InstanceKlass* ik = InstanceKlass::cast(klass());
4900 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4901 if (!may_be_java && !fs.access_flags().is_internal()) {
4902 // Only look at injected fields
4903 continue;
4904 }
4905 if (fs.name() == name() && fs.signature() == signature()) {
4906 return fs.offset();
4907 }
4908 }
4909 ResourceMark rm;
4910 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)" : "");
4911 #ifndef PRODUCT
4912 ik->print();
4913 tty->print_cr("all fields:");
4914 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4915 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4916 }
4917 #endif //PRODUCT
4918 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4919 return -1;
4920 }
4921
4922 void javaClasses_init() {
4923 JavaClasses::compute_offsets();
4924 JavaClasses::check_offsets();
4925 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4926 }