1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/classLoaderData.inline.hpp"
28 #include "classfile/javaClasses.inline.hpp"
29 #include "classfile/moduleEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "code/debugInfo.hpp"
34 #include "code/dependencyContext.hpp"
35 #include "code/pcDesc.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "logging/log.hpp"
39 #include "logging/logStream.hpp"
40 #include "memory/heapShared.inline.hpp"
41 #include "memory/metaspaceShared.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "oops/fieldStreams.inline.hpp"
46 #include "oops/instanceKlass.hpp"
47 #include "oops/instanceMirrorKlass.hpp"
48 #include "oops/klass.hpp"
49 #include "oops/method.inline.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/symbol.hpp"
53 #include "oops/recordComponent.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/resolvedMethodTable.hpp"
57 #include "runtime/fieldDescriptor.inline.hpp"
58 #include "runtime/frame.inline.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/init.hpp"
61 #include "runtime/interfaceSupport.inline.hpp"
62 #include "runtime/java.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/reflectionUtils.hpp"
66 #include "runtime/safepoint.hpp"
67 #include "runtime/safepointVerifiers.hpp"
68 #include "runtime/thread.inline.hpp"
69 #include "runtime/vframe.inline.hpp"
70 #include "runtime/vm_version.hpp"
71 #include "utilities/align.hpp"
72 #include "utilities/preserveException.hpp"
73 #include "utilities/utf8.hpp"
74 #if INCLUDE_JVMCI
75 #include "jvmci/jvmciJavaClasses.hpp"
76 #endif
77
78 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
79 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
80
81 #if INCLUDE_CDS
82 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
83 f->do_u4((u4*)&_##name##_offset);
84 #endif
85
86 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
87 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
88
89 InjectedField JavaClasses::_injected_fields[] = {
90 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
91 };
92
93 // Register native methods of Object
94 void java_lang_Object::register_natives(TRAPS) {
95 InstanceKlass* obj = SystemDictionary::Object_klass();
96 Method::register_native(obj, vmSymbols::hashCode_name(),
97 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
98 Method::register_native(obj, vmSymbols::wait_name(),
99 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
100 Method::register_native(obj, vmSymbols::notify_name(),
101 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
102 Method::register_native(obj, vmSymbols::notifyAll_name(),
103 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
104 Method::register_native(obj, vmSymbols::clone_name(),
105 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
106 }
107
108 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
109 return _injected_fields[id].compute_offset();
110 }
111
112 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
113 *field_count = 0;
114
115 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
116 if (sid == vmSymbols::NO_SID) {
117 // Only well known classes can inject fields
118 return NULL;
119 }
120
121 int count = 0;
122 int start = -1;
123
124 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
125 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
126 count++; \
127 if (start == -1) start = klass##_##name##_enum; \
128 }
129 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
130 #undef LOOKUP_INJECTED_FIELD
131
132 if (start != -1) {
133 *field_count = count;
134 return _injected_fields + start;
135 }
136 return NULL;
137 }
138
139
140 // Helpful routine for computing field offsets at run time rather than hardcoding them
141 // Finds local fields only, including static fields. Static field offsets are from the
142 // beginning of the mirror.
143 static void compute_offset(int &dest_offset,
144 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
145 bool is_static = false) {
146 fieldDescriptor fd;
147 if (ik == NULL) {
148 ResourceMark rm;
149 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
150 vm_exit_during_initialization("Invalid layout of well-known class");
151 }
152
153 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
154 ResourceMark rm;
155 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
156 name_symbol->as_C_string(), signature_symbol->as_C_string());
157 #ifndef PRODUCT
158 // Prints all fields and offsets
159 Log(class) lt;
160 LogStream ls(lt.error());
161 ik->print_on(&ls);
162 #endif //PRODUCT
163 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
164 }
165 dest_offset = fd.offset();
166 }
167
168 // Overloading to pass name as a string.
169 static void compute_offset(int& dest_offset, InstanceKlass* ik,
170 const char* name_string, Symbol* signature_symbol,
171 bool is_static = false) {
172 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
173 if (name == NULL) {
174 ResourceMark rm;
175 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
176 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
177 }
178 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
179 }
180
181
182 #if INCLUDE_CDS
183 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
184 f->do_u4((u4*)&offset)
185 #endif
186
187 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
188 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
189
190
191 // java_lang_String
192
193 int java_lang_String::_value_offset;
194 int java_lang_String::_hash_offset;
195 int java_lang_String::_hashIsZero_offset;
196 int java_lang_String::_coder_offset;
197
198 bool java_lang_String::_initialized;
199
200 bool java_lang_String::is_instance(oop obj) {
201 return is_instance_inlined(obj);
202 }
203
204 #define STRING_FIELDS_DO(macro) \
205 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
206 macro(_hash_offset, k, "hash", int_signature, false); \
207 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
208 macro(_coder_offset, k, "coder", byte_signature, false);
209
210 void java_lang_String::compute_offsets() {
211 if (_initialized) {
212 return;
213 }
214
215 InstanceKlass* k = SystemDictionary::String_klass();
216 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
217
218 _initialized = true;
219 }
220
221 #if INCLUDE_CDS
222 void java_lang_String::serialize_offsets(SerializeClosure* f) {
223 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
224 f->do_bool(&_initialized);
225 }
226 #endif
227
228 class CompactStringsFixup : public FieldClosure {
229 private:
230 bool _value;
231
232 public:
233 CompactStringsFixup(bool value) : _value(value) {}
234
235 void do_field(fieldDescriptor* fd) {
236 if (fd->name() == vmSymbols::compact_strings_name()) {
237 oop mirror = fd->field_holder()->java_mirror();
238 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
239 assert(mirror != NULL, "String must have mirror already");
240 mirror->bool_field_put(fd->offset(), _value);
241 }
242 }
243 };
244
245 void java_lang_String::set_compact_strings(bool value) {
246 CompactStringsFixup fix(value);
247 SystemDictionary::String_klass()->do_local_static_fields(&fix);
248 }
249
250 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
251 assert(_initialized, "Must be initialized");
252 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
253
254 // Create the String object first, so there's a chance that the String
255 // and the char array it points to end up in the same cache line.
256 oop obj;
257 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
258
259 // Create the char array. The String object must be handlized here
260 // because GC can happen as a result of the allocation attempt.
261 Handle h_obj(THREAD, obj);
262 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
263 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
264
265 // Point the String at the char array
266 obj = h_obj();
267 set_value(obj, buffer);
268 // No need to zero the offset, allocation zero'ed the entire String object
269 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
270 return h_obj;
271 }
272
273 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
274 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
275 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
276 typeArrayOop buffer = value(h_obj());
277 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
278 if (is_latin1) {
279 for (int index = 0; index < length; index++) {
280 buffer->byte_at_put(index, (jbyte)unicode[index]);
281 }
282 } else {
283 for (int index = 0; index < length; index++) {
284 buffer->char_at_put(index, unicode[index]);
285 }
286 }
287
288 #ifdef ASSERT
289 {
290 ResourceMark rm;
291 char* expected = UNICODE::as_utf8(unicode, length);
292 char* actual = as_utf8_string(h_obj());
293 if (strcmp(expected, actual) != 0) {
294 fatal("Unicode conversion failure: %s --> %s", expected, actual);
295 }
296 }
297 #endif
298
299 return h_obj;
300 }
301
302 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
303 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
304 return h_obj();
305 }
306
307 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
308 if (utf8_str == NULL) {
309 return Handle();
310 }
311 bool has_multibyte, is_latin1;
312 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
313 if (!CompactStrings) {
314 has_multibyte = true;
315 is_latin1 = false;
316 }
317
318 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
319 if (length > 0) {
320 if (!has_multibyte) {
321 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
322 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
323 } else if (is_latin1) {
324 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
325 } else {
326 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
327 }
328 }
329
330 #ifdef ASSERT
331 // This check is too strict when the input string is not a valid UTF8.
332 // For example, it may be created with arbitrary content via jni_NewStringUTF.
333 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) {
334 ResourceMark rm;
335 const char* expected = utf8_str;
336 char* actual = as_utf8_string(h_obj());
337 if (strcmp(expected, actual) != 0) {
338 fatal("String conversion failure: %s --> %s", expected, actual);
339 }
340 }
341 #endif
342
343 return h_obj;
344 }
345
346 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
347 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
348 return h_obj();
349 }
350
351 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
352 const char* utf8_str = (char*)symbol->bytes();
353 int utf8_len = symbol->utf8_length();
354
355 bool has_multibyte, is_latin1;
356 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
357 if (!CompactStrings) {
358 has_multibyte = true;
359 is_latin1 = false;
360 }
361
362 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
363 if (length > 0) {
364 if (!has_multibyte) {
365 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
366 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
367 } else if (is_latin1) {
368 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
369 } else {
370 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
371 }
372 }
373
374 #ifdef ASSERT
375 {
376 ResourceMark rm;
377 const char* expected = symbol->as_utf8();
378 char* actual = as_utf8_string(h_obj());
379 if (strncmp(expected, actual, utf8_len) != 0) {
380 fatal("Symbol conversion failure: %s --> %s", expected, actual);
381 }
382 }
383 #endif
384
385 return h_obj;
386 }
387
388 // Converts a C string to a Java String based on current encoding
389 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
390 assert(str != NULL, "bad arguments");
391
392 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
393 static to_java_string_fn_t _to_java_string_fn = NULL;
394
395 if (_to_java_string_fn == NULL) {
396 void *lib_handle = os::native_java_library();
397 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
398 #if defined(_WIN32) && !defined(_WIN64)
399 if (_to_java_string_fn == NULL) {
400 // On 32 bit Windows, also try __stdcall decorated name
401 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
402 }
403 #endif
404 if (_to_java_string_fn == NULL) {
405 fatal("JNU_NewStringPlatform missing");
406 }
407 }
408
409 jstring js = NULL;
410 {
411 JavaThread* thread = THREAD->as_Java_thread();
412 HandleMark hm(thread);
413 ThreadToNativeFromVM ttn(thread);
414 js = (_to_java_string_fn)(thread->jni_environment(), str);
415 }
416
417 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
418 JNIHandles::destroy_local(js); // destroy local JNIHandle.
419 return native_platform_string;
420 }
421
422 // Converts a Java String to a native C string that can be used for
423 // native OS calls.
424 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
425 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
426 static to_platform_string_fn_t _to_platform_string_fn = NULL;
427
428 if (_to_platform_string_fn == NULL) {
429 void *lib_handle = os::native_java_library();
430 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
431 if (_to_platform_string_fn == NULL) {
432 fatal("GetStringPlatformChars missing");
433 }
434 }
435
436 char *native_platform_string;
437 { JavaThread* thread = THREAD->as_Java_thread();
438 jstring js = (jstring) JNIHandles::make_local(thread, java_string());
439 bool is_copy;
440 HandleMark hm(thread);
441 ThreadToNativeFromVM ttn(thread);
442 JNIEnv *env = thread->jni_environment();
443 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
444 assert(is_copy == JNI_TRUE, "is_copy value changed");
445 JNIHandles::destroy_local(js);
446 }
447 return native_platform_string;
448 }
449
450 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
451 oop obj = java_string();
452 // Typical usage is to convert all '/' to '.' in string.
453 typeArrayOop value = java_lang_String::value(obj);
454 int length = java_lang_String::length(obj, value);
455 bool is_latin1 = java_lang_String::is_latin1(obj);
456
457 // First check if any from_char exist
458 int index; // Declared outside, used later
459 for (index = 0; index < length; index++) {
460 jchar c = !is_latin1 ? value->char_at(index) :
461 ((jchar) value->byte_at(index)) & 0xff;
462 if (c == from_char) {
463 break;
464 }
465 }
466 if (index == length) {
467 // No from_char, so do not copy.
468 return java_string;
469 }
470
471 // Check if result string will be latin1
472 bool to_is_latin1 = false;
473
474 // Replacement char must be latin1
475 if (CompactStrings && UNICODE::is_latin1(to_char)) {
476 if (is_latin1) {
477 // Source string is latin1 as well
478 to_is_latin1 = true;
479 } else if (!UNICODE::is_latin1(from_char)) {
480 // We are replacing an UTF16 char. Scan string to
481 // check if result can be latin1 encoded.
482 to_is_latin1 = true;
483 for (index = 0; index < length; index++) {
484 jchar c = value->char_at(index);
485 if (c != from_char && !UNICODE::is_latin1(c)) {
486 to_is_latin1 = false;
487 break;
488 }
489 }
490 }
491 }
492
493 // Create new UNICODE (or byte) buffer. Must handlize value because GC
494 // may happen during String and char array creation.
495 typeArrayHandle h_value(THREAD, value);
496 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
497 typeArrayOop from_buffer = h_value();
498 typeArrayOop to_buffer = java_lang_String::value(string());
499
500 // Copy contents
501 for (index = 0; index < length; index++) {
502 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
503 ((jchar) from_buffer->byte_at(index)) & 0xff;
504 if (c == from_char) {
505 c = to_char;
506 }
507 if (!to_is_latin1) {
508 to_buffer->char_at_put(index, c);
509 } else {
510 to_buffer->byte_at_put(index, (jbyte) c);
511 }
512 }
513 return string;
514 }
515
516 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
517 typeArrayOop value = java_lang_String::value(java_string);
518 length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
522 if (result != NULL) {
523 if (!is_latin1) {
524 for (int index = 0; index < length; index++) {
525 result[index] = value->char_at(index);
526 }
527 } else {
528 for (int index = 0; index < length; index++) {
529 result[index] = ((jchar) value->byte_at(index)) & 0xff;
530 }
531 }
532 } else {
533 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
534 }
535 return result;
536 }
537
538 unsigned int java_lang_String::hash_code(oop java_string) {
539 // The hash and hashIsZero fields are subject to a benign data race,
540 // making it crucial to ensure that any observable result of the
541 // calculation in this method stays correct under any possible read of
542 // these fields. Necessary restrictions to allow this to be correct
543 // without explicit memory fences or similar concurrency primitives is
544 // that we can ever only write to one of these two fields for a given
545 // String instance, and that the computation is idempotent and derived
546 // from immutable state
547 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized");
548 if (java_lang_String::hash_is_set(java_string)) {
549 return java_string->int_field(_hash_offset);
550 }
551
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 unsigned int hash = 0;
557 if (length > 0) {
558 if (is_latin1) {
559 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
560 } else {
561 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
562 }
563 }
564
565 if (hash != 0) {
566 java_string->int_field_put(_hash_offset, hash);
567 } else {
568 java_string->bool_field_put(_hashIsZero_offset, true);
569 }
570 return hash;
571 }
572
573 char* java_lang_String::as_quoted_ascii(oop java_string) {
574 typeArrayOop value = java_lang_String::value(java_string);
575 int length = java_lang_String::length(java_string, value);
576 bool is_latin1 = java_lang_String::is_latin1(java_string);
577
578 if (length == 0) return NULL;
579
580 char* result;
581 int result_length;
582 if (!is_latin1) {
583 jchar* base = value->char_at_addr(0);
584 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
585 result = NEW_RESOURCE_ARRAY(char, result_length);
586 UNICODE::as_quoted_ascii(base, length, result, result_length);
587 } else {
588 jbyte* base = value->byte_at_addr(0);
589 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
590 result = NEW_RESOURCE_ARRAY(char, result_length);
591 UNICODE::as_quoted_ascii(base, length, result, result_length);
592 }
593 assert(result_length >= length + 1, "must not be shorter");
594 assert(result_length == (int)strlen(result) + 1, "must match");
595 return result;
596 }
597
598 Symbol* java_lang_String::as_symbol(oop java_string) {
599 typeArrayOop value = java_lang_String::value(java_string);
600 int length = java_lang_String::length(java_string, value);
601 bool is_latin1 = java_lang_String::is_latin1(java_string);
602 if (!is_latin1) {
603 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
604 Symbol* sym = SymbolTable::new_symbol(base, length);
605 return sym;
606 } else {
607 ResourceMark rm;
608 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
609 const char* base = UNICODE::as_utf8(position, length);
610 Symbol* sym = SymbolTable::new_symbol(base, length);
611 return sym;
612 }
613 }
614
615 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
616 typeArrayOop value = java_lang_String::value(java_string);
617 int length = java_lang_String::length(java_string, value);
618 bool is_latin1 = java_lang_String::is_latin1(java_string);
619 if (!is_latin1) {
620 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
621 return SymbolTable::probe_unicode(base, length);
622 } else {
623 ResourceMark rm;
624 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
625 const char* base = UNICODE::as_utf8(position, length);
626 return SymbolTable::probe(base, length);
627 }
628 }
629
630 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
631 assert(value_equals(value, java_lang_String::value(java_string)),
632 "value must be same as java_lang_String::value(java_string)");
633 int length = java_lang_String::length(java_string, value);
634 if (length == 0) {
635 return 0;
636 }
637 if (!java_lang_String::is_latin1(java_string)) {
638 return UNICODE::utf8_length(value->char_at_addr(0), length);
639 } else {
640 return UNICODE::utf8_length(value->byte_at_addr(0), length);
641 }
642 }
643
644 int java_lang_String::utf8_length(oop java_string) {
645 typeArrayOop value = java_lang_String::value(java_string);
646 return utf8_length(java_string, value);
647 }
648
649 char* java_lang_String::as_utf8_string(oop java_string) {
650 int length;
651 return as_utf8_string(java_string, length);
652 }
653
654 char* java_lang_String::as_utf8_string(oop java_string, int& length) {
655 typeArrayOop value = java_lang_String::value(java_string);
656 length = java_lang_String::length(java_string, value);
657 bool is_latin1 = java_lang_String::is_latin1(java_string);
658 if (!is_latin1) {
659 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
660 return UNICODE::as_utf8(position, length);
661 } else {
662 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
663 return UNICODE::as_utf8(position, length);
664 }
665 }
666
667 // Uses a provided buffer if it's sufficiently large, otherwise allocates
668 // a resource array to fit
669 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) {
670 typeArrayOop value = java_lang_String::value(java_string);
671 int len = java_lang_String::length(java_string, value);
672 bool is_latin1 = java_lang_String::is_latin1(java_string);
673 if (!is_latin1) {
674 jchar *position = (len == 0) ? NULL : value->char_at_addr(0);
675 utf8_len = UNICODE::utf8_length(position, len);
676 if (utf8_len >= buflen) {
677 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
678 }
679 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
680 } else {
681 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0);
682 utf8_len = UNICODE::utf8_length(position, len);
683 if (utf8_len >= buflen) {
684 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1);
685 }
686 return UNICODE::as_utf8(position, len, buf, utf8_len + 1);
687 }
688 }
689
690 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
691 assert(value_equals(value, java_lang_String::value(java_string)),
692 "value must be same as java_lang_String::value(java_string)");
693 int length = java_lang_String::length(java_string, value);
694 bool is_latin1 = java_lang_String::is_latin1(java_string);
695 if (!is_latin1) {
696 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
697 return UNICODE::as_utf8(position, length, buf, buflen);
698 } else {
699 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
700 return UNICODE::as_utf8(position, length, buf, buflen);
701 }
702 }
703
704 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
705 typeArrayOop value = java_lang_String::value(java_string);
706 return as_utf8_string(java_string, value, buf, buflen);
707 }
708
709 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
710 typeArrayOop value = java_lang_String::value(java_string);
711 bool is_latin1 = java_lang_String::is_latin1(java_string);
712 assert(start + len <= java_lang_String::length(java_string), "just checking");
713 if (!is_latin1) {
714 jchar* position = value->char_at_addr(start);
715 return UNICODE::as_utf8(position, len);
716 } else {
717 jbyte* position = value->byte_at_addr(start);
718 return UNICODE::as_utf8(position, len);
719 }
720 }
721
722 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
723 assert(value_equals(value, java_lang_String::value(java_string)),
724 "value must be same as java_lang_String::value(java_string)");
725 assert(start + len <= java_lang_String::length(java_string), "just checking");
726 bool is_latin1 = java_lang_String::is_latin1(java_string);
727 if (!is_latin1) {
728 jchar* position = value->char_at_addr(start);
729 return UNICODE::as_utf8(position, len, buf, buflen);
730 } else {
731 jbyte* position = value->byte_at_addr(start);
732 return UNICODE::as_utf8(position, len, buf, buflen);
733 }
734 }
735
736 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
737 assert(java_string->klass() == SystemDictionary::String_klass(),
738 "must be java_string");
739 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
740 int length = java_lang_String::length(java_string, value);
741 if (length != len) {
742 return false;
743 }
744 bool is_latin1 = java_lang_String::is_latin1(java_string);
745 if (!is_latin1) {
746 for (int i = 0; i < len; i++) {
747 if (value->char_at(i) != chars[i]) {
748 return false;
749 }
750 }
751 } else {
752 for (int i = 0; i < len; i++) {
753 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
754 return false;
755 }
756 }
757 }
758 return true;
759 }
760
761 bool java_lang_String::equals(oop str1, oop str2) {
762 assert(str1->klass() == SystemDictionary::String_klass(),
763 "must be java String");
764 assert(str2->klass() == SystemDictionary::String_klass(),
765 "must be java String");
766 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
767 bool is_latin1 = java_lang_String::is_latin1(str1);
768 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
769 bool is_latin2 = java_lang_String::is_latin1(str2);
770
771 if (is_latin1 != is_latin2) {
772 // Strings with different coders are never equal.
773 return false;
774 }
775 return value_equals(value1, value2);
776 }
777
778 void java_lang_String::print(oop java_string, outputStream* st) {
779 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
780 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
781
782 if (value == NULL) {
783 // This can happen if, e.g., printing a String
784 // object before its initializer has been called
785 st->print("NULL");
786 return;
787 }
788
789 int length = java_lang_String::length(java_string, value);
790 bool is_latin1 = java_lang_String::is_latin1(java_string);
791
792 st->print("\"");
793 for (int index = 0; index < length; index++) {
794 st->print("%c", (!is_latin1) ? value->char_at(index) :
795 ((jchar) value->byte_at(index)) & 0xff );
796 }
797 st->print("\"");
798 }
799
800 // java_lang_Class
801
802 int java_lang_Class::_klass_offset;
803 int java_lang_Class::_array_klass_offset;
804 int java_lang_Class::_oop_size_offset;
805 int java_lang_Class::_static_oop_field_count_offset;
806 int java_lang_Class::_class_loader_offset;
807 int java_lang_Class::_module_offset;
808 int java_lang_Class::_protection_domain_offset;
809 int java_lang_Class::_component_mirror_offset;
810 int java_lang_Class::_init_lock_offset;
811 int java_lang_Class::_signers_offset;
812 int java_lang_Class::_name_offset;
813 int java_lang_Class::_source_file_offset;
814 int java_lang_Class::_classData_offset;
815 int java_lang_Class::_classRedefinedCount_offset;
816
817 bool java_lang_Class::_offsets_computed = false;
818 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
819 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
820
821 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
822 assert(mirror.not_null() && fd->is_static(), "just checking");
823 if (fd->has_initial_value()) {
824 BasicType t = fd->field_type();
825 switch (t) {
826 case T_BYTE:
827 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
828 break;
829 case T_BOOLEAN:
830 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
831 break;
832 case T_CHAR:
833 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
834 break;
835 case T_SHORT:
836 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
837 break;
838 case T_INT:
839 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
840 break;
841 case T_FLOAT:
842 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
843 break;
844 case T_DOUBLE:
845 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
846 break;
847 case T_LONG:
848 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
849 break;
850 case T_OBJECT:
851 {
852 assert(fd->signature() == vmSymbols::string_signature(),
853 "just checking");
854 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
855 // Archive the String field and update the pointer.
856 oop s = mirror()->obj_field(fd->offset());
857 oop archived_s = StringTable::create_archived_string(s, CHECK);
858 mirror()->obj_field_put(fd->offset(), archived_s);
859 } else {
860 oop string = fd->string_initial_value(CHECK);
861 mirror()->obj_field_put(fd->offset(), string);
862 }
863 }
864 break;
865 default:
866 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
867 "Illegal ConstantValue attribute in class file");
868 }
869 }
870 }
871
872
873 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
874 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
875
876 // If the offset was read from the shared archive, it was fixed up already
877 if (!k->is_shared()) {
878 if (k->is_instance_klass()) {
879 // During bootstrap, java.lang.Class wasn't loaded so static field
880 // offsets were computed without the size added it. Go back and
881 // update all the static field offsets to included the size.
882 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
883 if (fs.access_flags().is_static()) {
884 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
885 fs.set_offset(real_offset);
886 }
887 }
888 }
889 }
890
891 if (k->is_shared() && k->has_raw_archived_mirror()) {
892 if (HeapShared::open_archive_heap_region_mapped()) {
893 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
894 assert(present, "Missing archived mirror for %s", k->external_name());
895 return;
896 } else {
897 k->clear_java_mirror_handle();
898 k->clear_has_raw_archived_mirror();
899 }
900 }
901 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK);
902 }
903
904 void java_lang_Class::initialize_mirror_fields(Klass* k,
905 Handle mirror,
906 Handle protection_domain,
907 Handle classData,
908 TRAPS) {
909 // Allocate a simple java object for a lock.
910 // This needs to be a java object because during class initialization
911 // it can be held across a java call.
912 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
913 set_init_lock(mirror(), r);
914
915 // Set protection domain also
916 set_protection_domain(mirror(), protection_domain());
917
918 // Initialize static fields
919 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
920
921 // Set classData
922 set_class_data(mirror(), classData());
923 }
924
925 // Set the java.lang.Module module field in the java_lang_Class mirror
926 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
927 if (module.is_null()) {
928 // During startup, the module may be NULL only if java.base has not been defined yet.
929 // Put the class on the fixup_module_list to patch later when the java.lang.Module
930 // for java.base is known. But note that since we captured the NULL module another
931 // thread may have completed that initialization.
932
933 bool javabase_was_defined = false;
934 {
935 MutexLocker m1(THREAD, Module_lock);
936 // Keep list of classes needing java.base module fixup
937 if (!ModuleEntryTable::javabase_defined()) {
938 assert(k->java_mirror() != NULL, "Class's mirror is null");
939 k->class_loader_data()->inc_keep_alive();
940 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
941 fixup_module_field_list()->push(k);
942 } else {
943 javabase_was_defined = true;
944 }
945 }
946
947 // If java.base was already defined then patch this particular class with java.base.
948 if (javabase_was_defined) {
949 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
950 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
951 "Setting class module field, " JAVA_BASE_NAME " should be defined");
952 Handle javabase_handle(THREAD, javabase_entry->module());
953 set_module(mirror(), javabase_handle());
954 }
955 } else {
956 assert(Universe::is_module_initialized() ||
957 (ModuleEntryTable::javabase_defined() &&
958 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
959 "Incorrect java.lang.Module specification while creating mirror");
960 set_module(mirror(), module());
961 }
962 }
963
964 // Statically allocate fixup lists because they always get created.
965 void java_lang_Class::allocate_fixup_lists() {
966 GrowableArray<Klass*>* mirror_list =
967 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass);
968 set_fixup_mirror_list(mirror_list);
969
970 GrowableArray<Klass*>* module_list =
971 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule);
972 set_fixup_module_field_list(module_list);
973 }
974
975 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
976 Handle module, Handle protection_domain,
977 Handle classData, TRAPS) {
978 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
979 assert(k->java_mirror() == NULL, "should only assign mirror once");
980
981 // Use this moment of initialization to cache modifier_flags also,
982 // to support Class.getModifiers(). Instance classes recalculate
983 // the cached flags after the class file is parsed, but before the
984 // class is put into the system dictionary.
985 int computed_modifiers = k->compute_modifier_flags(CHECK);
986 k->set_modifier_flags(computed_modifiers);
987 // Class_klass has to be loaded because it is used to allocate
988 // the mirror.
989 if (SystemDictionary::Class_klass_loaded()) {
990 // Allocate mirror (java.lang.Class instance)
991 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
992 Handle mirror(THREAD, mirror_oop);
993 Handle comp_mirror;
994
995 // Setup indirection from mirror->klass
996 java_lang_Class::set_klass(mirror(), k);
997
998 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
999 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1000
1001 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1002
1003 // It might also have a component mirror. This mirror must already exist.
1004 if (k->is_array_klass()) {
1005 if (k->is_typeArray_klass()) {
1006 BasicType type = TypeArrayKlass::cast(k)->element_type();
1007 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1008 } else {
1009 assert(k->is_objArray_klass(), "Must be");
1010 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1011 assert(element_klass != NULL, "Must have an element klass");
1012 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1013 }
1014 assert(comp_mirror() != NULL, "must have a mirror");
1015
1016 // Two-way link between the array klass and its component mirror:
1017 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1018 set_component_mirror(mirror(), comp_mirror());
1019 // See below for ordering dependencies between field array_klass in component mirror
1020 // and java_mirror in this klass.
1021 } else {
1022 assert(k->is_instance_klass(), "Must be");
1023
1024 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD);
1025 if (HAS_PENDING_EXCEPTION) {
1026 // If any of the fields throws an exception like OOM remove the klass field
1027 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1028 // This mirror looks like a primitive type, which logically it is because it
1029 // it represents no class.
1030 java_lang_Class::set_klass(mirror(), NULL);
1031 return;
1032 }
1033 }
1034
1035 // set the classLoader field in the java_lang_Class instance
1036 assert(class_loader() == k->class_loader(), "should be same");
1037 set_class_loader(mirror(), class_loader());
1038
1039 // Setup indirection from klass->mirror
1040 // after any exceptions can happen during allocations.
1041 k->set_java_mirror(mirror);
1042
1043 // Set the module field in the java_lang_Class instance. This must be done
1044 // after the mirror is set.
1045 set_mirror_module_field(k, mirror, module, THREAD);
1046
1047 if (comp_mirror() != NULL) {
1048 // Set after k->java_mirror() is published, because compiled code running
1049 // concurrently doesn't expect a k to have a null java_mirror.
1050 release_set_array_klass(comp_mirror(), k);
1051 }
1052 } else {
1053 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1054 fixup_mirror_list()->push(k);
1055 }
1056 }
1057
1058 #if INCLUDE_CDS_JAVA_HEAP
1059 // Clears mirror fields. Static final fields with initial values are reloaded
1060 // from constant pool. The object identity hash is in the object header and is
1061 // not affected.
1062 class ResetMirrorField: public FieldClosure {
1063 private:
1064 Handle _m;
1065
1066 public:
1067 ResetMirrorField(Handle mirror) : _m(mirror) {}
1068
1069 void do_field(fieldDescriptor* fd) {
1070 assert(DumpSharedSpaces, "dump time only");
1071 assert(_m.not_null(), "Mirror cannot be NULL");
1072
1073 if (fd->is_static() && fd->has_initial_value()) {
1074 initialize_static_field(fd, _m, Thread::current());
1075 return;
1076 }
1077
1078 BasicType ft = fd->field_type();
1079 switch (ft) {
1080 case T_BYTE:
1081 _m()->byte_field_put(fd->offset(), 0);
1082 break;
1083 case T_CHAR:
1084 _m()->char_field_put(fd->offset(), 0);
1085 break;
1086 case T_DOUBLE:
1087 _m()->double_field_put(fd->offset(), 0);
1088 break;
1089 case T_FLOAT:
1090 _m()->float_field_put(fd->offset(), 0);
1091 break;
1092 case T_INT:
1093 _m()->int_field_put(fd->offset(), 0);
1094 break;
1095 case T_LONG:
1096 _m()->long_field_put(fd->offset(), 0);
1097 break;
1098 case T_SHORT:
1099 _m()->short_field_put(fd->offset(), 0);
1100 break;
1101 case T_BOOLEAN:
1102 _m()->bool_field_put(fd->offset(), false);
1103 break;
1104 case T_ARRAY:
1105 case T_OBJECT: {
1106 // It might be useful to cache the String field, but
1107 // for now just clear out any reference field
1108 oop o = _m()->obj_field(fd->offset());
1109 _m()->obj_field_put(fd->offset(), NULL);
1110 break;
1111 }
1112 default:
1113 ShouldNotReachHere();
1114 break;
1115 }
1116 }
1117 };
1118
1119 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1120 assert(HeapShared::is_heap_object_archiving_allowed(),
1121 "HeapShared::is_heap_object_archiving_allowed() must be true");
1122
1123 for (int t = T_BOOLEAN; t < T_VOID+1; t++) {
1124 BasicType bt = (BasicType)t;
1125 oop m = Universe::_mirrors[t].resolve();
1126 if (m != NULL) {
1127 // Update the field at _array_klass_offset to point to the relocated array klass.
1128 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1129 assert(archived_m != NULL, "sanity");
1130 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1131 assert(ak != NULL || t == T_VOID, "should not be NULL");
1132 if (ak != NULL) {
1133 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1134 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1135 }
1136
1137 // Clear the fields. Just to be safe
1138 Klass *k = m->klass();
1139 Handle archived_mirror_h(THREAD, archived_m);
1140 ResetMirrorField reset(archived_mirror_h);
1141 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1142
1143 log_trace(cds, heap, mirror)(
1144 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1145 type2name(bt), p2i(m), p2i(archived_m));
1146
1147 Universe::replace_mirror(bt, archived_m);
1148 }
1149 }
1150 }
1151 //
1152 // After the mirror object is successfully archived, the archived
1153 // klass is set with _has_archived_raw_mirror flag.
1154 //
1155 // The _has_archived_raw_mirror flag is cleared at runtime when the
1156 // archived mirror is restored. If archived java heap data cannot
1157 // be used at runtime, new mirror object is created for the shared
1158 // class. The _has_archived_raw_mirror is cleared also during the process.
1159 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1160 assert(HeapShared::is_heap_object_archiving_allowed(),
1161 "HeapShared::is_heap_object_archiving_allowed() must be true");
1162
1163 // Mirror is already archived
1164 if (k->has_raw_archived_mirror()) {
1165 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1166 return k->archived_java_mirror_raw();
1167 }
1168
1169 // No mirror
1170 oop mirror = k->java_mirror();
1171 if (mirror == NULL) {
1172 return NULL;
1173 }
1174
1175 if (k->is_instance_klass()) {
1176 InstanceKlass *ik = InstanceKlass::cast(k);
1177 assert(ik->signers() == NULL, "class with signer should have been excluded");
1178
1179 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1180 ik->is_shared_app_class())) {
1181 // Archiving mirror for classes from non-builtin loaders is not
1182 // supported.
1183 return NULL;
1184 }
1185 }
1186
1187 // Now start archiving the mirror object
1188 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1189 if (archived_mirror == NULL) {
1190 return NULL;
1191 }
1192
1193 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1194 if (archived_mirror == NULL) {
1195 return NULL;
1196 }
1197
1198 k->set_archived_java_mirror_raw(archived_mirror);
1199
1200 k->set_has_raw_archived_mirror();
1201
1202 ResourceMark rm;
1203 log_trace(cds, heap, mirror)(
1204 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1205 k->external_name(), p2i(mirror), p2i(archived_mirror));
1206
1207 return archived_mirror;
1208 }
1209
1210 // The process is based on create_mirror().
1211 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1212 oop archived_mirror,
1213 Thread *THREAD) {
1214 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1215 // to archived metadata and objects below.
1216 Klass *c = archived_mirror->klass();
1217 Handle archived_mirror_h(THREAD, archived_mirror);
1218 ResetMirrorField reset(archived_mirror_h);
1219 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1220
1221 if (k->is_array_klass()) {
1222 oop archived_comp_mirror;
1223 if (k->is_typeArray_klass()) {
1224 // The primitive type mirrors are already archived. Get the archived mirror.
1225 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1226 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1227 assert(archived_comp_mirror != NULL, "Must be");
1228 } else {
1229 assert(k->is_objArray_klass(), "Must be");
1230 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1231 assert(element_klass != NULL, "Must have an element klass");
1232 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1233 if (archived_comp_mirror == NULL) {
1234 return NULL;
1235 }
1236 }
1237 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1238 } else {
1239 assert(k->is_instance_klass(), "Must be");
1240
1241 // Reset local static fields in the mirror
1242 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1243
1244 java_lang_Class:set_init_lock(archived_mirror, NULL);
1245
1246 set_protection_domain(archived_mirror, NULL);
1247 }
1248
1249 // clear class loader and mirror_module_field
1250 set_class_loader(archived_mirror, NULL);
1251 set_module(archived_mirror, NULL);
1252
1253 // The archived mirror's field at _klass_offset is still pointing to the original
1254 // klass. Updated the field in the archived mirror to point to the relocated
1255 // klass in the archive.
1256 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1257 log_debug(cds, heap, mirror)(
1258 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1259 p2i(as_Klass(mirror)), p2i(reloc_k));
1260 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1261
1262 // The field at _array_klass_offset is pointing to the original one dimension
1263 // higher array klass if exists. Relocate the pointer.
1264 Klass *arr = array_klass_acquire(mirror);
1265 if (arr != NULL) {
1266 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1267 log_debug(cds, heap, mirror)(
1268 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1269 p2i(arr), p2i(reloc_arr));
1270 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1271 }
1272 return archived_mirror;
1273 }
1274
1275 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1276 if (MetaspaceShared::relocation_delta() != 0) {
1277 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1278
1279 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1280 if (ak != NULL) {
1281 archived_mirror->metadata_field_put(_array_klass_offset,
1282 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1283 }
1284 }
1285 }
1286
1287 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1288 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1289
1290 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1291 archived_mirror->metadata_field_put(_klass_offset,
1292 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1293
1294 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1295 if (ak != NULL) {
1296 archived_mirror->metadata_field_put(_array_klass_offset,
1297 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1298 }
1299 }
1300
1301
1302 // Returns true if the mirror is updated, false if no archived mirror
1303 // data is present. After the archived mirror object is restored, the
1304 // shared klass' _has_raw_archived_mirror flag is cleared.
1305 bool java_lang_Class::restore_archived_mirror(Klass *k,
1306 Handle class_loader, Handle module,
1307 Handle protection_domain, TRAPS) {
1308 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1309 // see more details in SystemDictionary::resolve_well_known_classes().
1310 if (!SystemDictionary::Class_klass_loaded()) {
1311 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1312 fixup_mirror_list()->push(k);
1313 return true;
1314 }
1315
1316 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1317 if (m == NULL) {
1318 return false;
1319 }
1320
1321 // mirror is archived, restore
1322 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1323 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1324 assert(as_Klass(m) == k, "must be");
1325 Handle mirror(THREAD, m);
1326
1327 if (!k->is_array_klass()) {
1328 // - local static final fields with initial values were initialized at dump time
1329
1330 // create the init_lock
1331 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1332 set_init_lock(mirror(), r);
1333
1334 if (protection_domain.not_null()) {
1335 set_protection_domain(mirror(), protection_domain());
1336 }
1337 }
1338
1339 assert(class_loader() == k->class_loader(), "should be same");
1340 if (class_loader.not_null()) {
1341 set_class_loader(mirror(), class_loader());
1342 }
1343
1344 k->set_java_mirror(mirror);
1345 k->clear_has_raw_archived_mirror();
1346
1347 set_mirror_module_field(k, mirror, module, THREAD);
1348
1349 if (log_is_enabled(Trace, cds, heap, mirror)) {
1350 ResourceMark rm(THREAD);
1351 log_trace(cds, heap, mirror)(
1352 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1353 }
1354
1355 return true;
1356 }
1357 #endif // INCLUDE_CDS_JAVA_HEAP
1358
1359 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1360 assert(_module_offset != 0, "must have been computed already");
1361 java_lang_Class::set_module(k->java_mirror(), module());
1362 }
1363
1364 int java_lang_Class::oop_size(oop java_class) {
1365 assert(_oop_size_offset != 0, "must be set");
1366 int size = java_class->int_field(_oop_size_offset);
1367 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1368 return size;
1369 }
1370
1371
1372 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1373 assert(_oop_size_offset != 0, "must be set");
1374 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1375 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1376 }
1377
1378 int java_lang_Class::static_oop_field_count(oop java_class) {
1379 assert(_static_oop_field_count_offset != 0, "must be set");
1380 return java_class->int_field(_static_oop_field_count_offset);
1381 }
1382
1383 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1384 assert(_static_oop_field_count_offset != 0, "must be set");
1385 return java_class->int_field_raw(_static_oop_field_count_offset);
1386 }
1387
1388 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1389 assert(_static_oop_field_count_offset != 0, "must be set");
1390 java_class->int_field_put(_static_oop_field_count_offset, size);
1391 }
1392
1393 oop java_lang_Class::protection_domain(oop java_class) {
1394 assert(_protection_domain_offset != 0, "must be set");
1395 return java_class->obj_field(_protection_domain_offset);
1396 }
1397 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1398 assert(_protection_domain_offset != 0, "must be set");
1399 java_class->obj_field_put(_protection_domain_offset, pd);
1400 }
1401
1402 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1403 assert(_component_mirror_offset != 0, "must be set");
1404 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1405 }
1406 oop java_lang_Class::component_mirror(oop java_class) {
1407 assert(_component_mirror_offset != 0, "must be set");
1408 return java_class->obj_field(_component_mirror_offset);
1409 }
1410
1411 oop java_lang_Class::init_lock(oop java_class) {
1412 assert(_init_lock_offset != 0, "must be set");
1413 return java_class->obj_field(_init_lock_offset);
1414 }
1415 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1416 assert(_init_lock_offset != 0, "must be set");
1417 java_class->obj_field_put(_init_lock_offset, init_lock);
1418 }
1419
1420 objArrayOop java_lang_Class::signers(oop java_class) {
1421 assert(_signers_offset != 0, "must be set");
1422 return (objArrayOop)java_class->obj_field(_signers_offset);
1423 }
1424 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1425 assert(_signers_offset != 0, "must be set");
1426 java_class->obj_field_put(_signers_offset, (oop)signers);
1427 }
1428
1429 oop java_lang_Class::class_data(oop java_class) {
1430 assert(_classData_offset != 0, "must be set");
1431 return java_class->obj_field(_classData_offset);
1432 }
1433 void java_lang_Class::set_class_data(oop java_class, oop class_data) {
1434 assert(_classData_offset != 0, "must be set");
1435 java_class->obj_field_put(_classData_offset, class_data);
1436 }
1437
1438 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1439 assert(_class_loader_offset != 0, "offsets should have been initialized");
1440 java_class->obj_field_put(_class_loader_offset, loader);
1441 }
1442
1443 oop java_lang_Class::class_loader(oop java_class) {
1444 assert(_class_loader_offset != 0, "must be set");
1445 return java_class->obj_field(_class_loader_offset);
1446 }
1447
1448 oop java_lang_Class::module(oop java_class) {
1449 assert(_module_offset != 0, "must be set");
1450 return java_class->obj_field(_module_offset);
1451 }
1452
1453 void java_lang_Class::set_module(oop java_class, oop module) {
1454 assert(_module_offset != 0, "must be set");
1455 java_class->obj_field_put(_module_offset, module);
1456 }
1457
1458 oop java_lang_Class::name(Handle java_class, TRAPS) {
1459 assert(_name_offset != 0, "must be set");
1460 oop o = java_class->obj_field(_name_offset);
1461 if (o == NULL) {
1462 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1463 java_class->obj_field_put(_name_offset, o);
1464 }
1465 return o;
1466 }
1467
1468 oop java_lang_Class::source_file(oop java_class) {
1469 assert(_source_file_offset != 0, "must be set");
1470 return java_class->obj_field(_source_file_offset);
1471 }
1472
1473 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1474 assert(_source_file_offset != 0, "must be set");
1475 java_class->obj_field_put(_source_file_offset, source_file);
1476 }
1477
1478 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1479 // This should be improved by adding a field at the Java level or by
1480 // introducing a new VM klass (see comment in ClassFileParser)
1481 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1482 if (type != T_VOID) {
1483 Klass* aklass = Universe::typeArrayKlassObj(type);
1484 assert(aklass != NULL, "correct bootstrap");
1485 release_set_array_klass(java_class, aklass);
1486 }
1487 #ifdef ASSERT
1488 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1489 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1490 #endif
1491 return java_class;
1492 }
1493
1494
1495 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1496 //%note memory_2
1497 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1498 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1499 assert(k == NULL || k->is_klass(), "type check");
1500 return k;
1501 }
1502
1503
1504 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1505 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1506 java_class->metadata_field_put(_klass_offset, klass);
1507 }
1508
1509
1510 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1511 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1512 Symbol* name = NULL;
1513 bool is_instance = false;
1514 if (is_primitive(java_class)) {
1515 name = vmSymbols::type_signature(primitive_type(java_class));
1516 } else {
1517 Klass* k = as_Klass(java_class);
1518 is_instance = k->is_instance_klass();
1519 name = k->name();
1520 }
1521 if (name == NULL) {
1522 st->print("<null>");
1523 return;
1524 }
1525 if (is_instance) st->print("L");
1526 st->write((char*) name->base(), (int) name->utf8_length());
1527 if (is_instance) st->print(";");
1528 }
1529
1530 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1531 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1532 Symbol* name;
1533 if (is_primitive(java_class)) {
1534 name = vmSymbols::type_signature(primitive_type(java_class));
1535 // Because this can create a new symbol, the caller has to decrement
1536 // the refcount, so make adjustment here and below for symbols returned
1537 // that are not created or incremented due to a successful lookup.
1538 name->increment_refcount();
1539 } else {
1540 Klass* k = as_Klass(java_class);
1541 if (!k->is_instance_klass()) {
1542 name = k->name();
1543 name->increment_refcount();
1544 } else {
1545 ResourceMark rm;
1546 const char* sigstr = k->signature_name();
1547 int siglen = (int) strlen(sigstr);
1548 if (!intern_if_not_found) {
1549 name = SymbolTable::probe(sigstr, siglen);
1550 } else {
1551 name = SymbolTable::new_symbol(sigstr, siglen);
1552 }
1553 }
1554 }
1555 return name;
1556 }
1557
1558 // Returns the Java name for this Java mirror (Resource allocated)
1559 // See Klass::external_name().
1560 // For primitive type Java mirrors, its type name is returned.
1561 const char* java_lang_Class::as_external_name(oop java_class) {
1562 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1563 const char* name = NULL;
1564 if (is_primitive(java_class)) {
1565 name = type2name(primitive_type(java_class));
1566 } else {
1567 name = as_Klass(java_class)->external_name();
1568 }
1569 if (name == NULL) {
1570 name = "<null>";
1571 }
1572 return name;
1573 }
1574
1575 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1576 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1577 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1578 return k;
1579 }
1580
1581
1582 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1583 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1584 java_class->release_metadata_field_put(_array_klass_offset, klass);
1585 }
1586
1587
1588 BasicType java_lang_Class::primitive_type(oop java_class) {
1589 assert(java_lang_Class::is_primitive(java_class), "just checking");
1590 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1591 BasicType type = T_VOID;
1592 if (ak != NULL) {
1593 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1594 type = ArrayKlass::cast(ak)->element_type();
1595 } else {
1596 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1597 }
1598 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1599 return type;
1600 }
1601
1602 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1603 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1604 if (is_primitive(java_class)) {
1605 if (reference_klass != NULL)
1606 (*reference_klass) = NULL;
1607 return primitive_type(java_class);
1608 } else {
1609 if (reference_klass != NULL)
1610 (*reference_klass) = as_Klass(java_class);
1611 return T_OBJECT;
1612 }
1613 }
1614
1615
1616 oop java_lang_Class::primitive_mirror(BasicType t) {
1617 oop mirror = Universe::java_mirror(t);
1618 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1619 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1620 return mirror;
1621 }
1622
1623 #define CLASS_FIELDS_DO(macro) \
1624 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1625 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1626 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1627 macro(_module_offset, k, "module", module_signature, false); \
1628 macro(_name_offset, k, "name", string_signature, false); \
1629 macro(_classData_offset, k, "classData", object_signature, false);
1630
1631 void java_lang_Class::compute_offsets() {
1632 if (_offsets_computed) {
1633 return;
1634 }
1635
1636 _offsets_computed = true;
1637
1638 InstanceKlass* k = SystemDictionary::Class_klass();
1639 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1640
1641 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1642 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1643 // GC treats them the same.
1644 _init_lock_offset = _component_mirror_offset;
1645
1646 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1647 }
1648
1649 #if INCLUDE_CDS
1650 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1651 f->do_bool(&_offsets_computed);
1652 f->do_u4((u4*)&_init_lock_offset);
1653
1654 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1655
1656 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1657 }
1658 #endif
1659
1660 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1661 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1662 return the_class_mirror->int_field(_classRedefinedCount_offset);
1663 }
1664
1665 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1666 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized");
1667 the_class_mirror->int_field_put(_classRedefinedCount_offset, value);
1668 }
1669
1670
1671 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1672 // platform thread structure, and a eetop offset which was used for thread
1673 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1674 // merged, so in the HotSpot VM we just use the eetop field for the thread
1675 // instead of the privateInfo_offset.
1676 //
1677 // Note: The stackSize field is only present starting in 1.4.
1678
1679 int java_lang_Thread::_name_offset;
1680 int java_lang_Thread::_group_offset;
1681 int java_lang_Thread::_contextClassLoader_offset;
1682 int java_lang_Thread::_inheritedAccessControlContext_offset;
1683 int java_lang_Thread::_priority_offset;
1684 int java_lang_Thread::_eetop_offset;
1685 int java_lang_Thread::_interrupted_offset;
1686 int java_lang_Thread::_daemon_offset;
1687 int java_lang_Thread::_stillborn_offset;
1688 int java_lang_Thread::_stackSize_offset;
1689 int java_lang_Thread::_tid_offset;
1690 int java_lang_Thread::_thread_status_offset;
1691 int java_lang_Thread::_park_blocker_offset;
1692
1693 #define THREAD_FIELDS_DO(macro) \
1694 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1695 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1696 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1697 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1698 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1699 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1700 macro(_eetop_offset, k, "eetop", long_signature, false); \
1701 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1702 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1703 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1704 macro(_tid_offset, k, "tid", long_signature, false); \
1705 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1706 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1707
1708 void java_lang_Thread::compute_offsets() {
1709 assert(_group_offset == 0, "offsets should be initialized only once");
1710
1711 InstanceKlass* k = SystemDictionary::Thread_klass();
1712 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1713 }
1714
1715 #if INCLUDE_CDS
1716 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1717 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1718 }
1719 #endif
1720
1721 JavaThread* java_lang_Thread::thread(oop java_thread) {
1722 return (JavaThread*)java_thread->address_field(_eetop_offset);
1723 }
1724
1725
1726 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1727 java_thread->address_field_put(_eetop_offset, (address)thread);
1728 }
1729
1730 bool java_lang_Thread::interrupted(oop java_thread) {
1731 // Make sure the caller can safely access oops.
1732 assert(Thread::current()->is_VM_thread() ||
1733 (JavaThread::current()->thread_state() != _thread_blocked &&
1734 JavaThread::current()->thread_state() != _thread_in_native),
1735 "Unsafe access to oop");
1736 return java_thread->bool_field_volatile(_interrupted_offset);
1737 }
1738
1739 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1740 // Make sure the caller can safely access oops.
1741 assert(Thread::current()->is_VM_thread() ||
1742 (JavaThread::current()->thread_state() != _thread_blocked &&
1743 JavaThread::current()->thread_state() != _thread_in_native),
1744 "Unsafe access to oop");
1745 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1746 }
1747
1748
1749 oop java_lang_Thread::name(oop java_thread) {
1750 return java_thread->obj_field(_name_offset);
1751 }
1752
1753
1754 void java_lang_Thread::set_name(oop java_thread, oop name) {
1755 java_thread->obj_field_put(_name_offset, name);
1756 }
1757
1758
1759 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1760 return (ThreadPriority)java_thread->int_field(_priority_offset);
1761 }
1762
1763
1764 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1765 java_thread->int_field_put(_priority_offset, priority);
1766 }
1767
1768
1769 oop java_lang_Thread::threadGroup(oop java_thread) {
1770 return java_thread->obj_field(_group_offset);
1771 }
1772
1773
1774 bool java_lang_Thread::is_stillborn(oop java_thread) {
1775 return java_thread->bool_field(_stillborn_offset) != 0;
1776 }
1777
1778
1779 // We never have reason to turn the stillborn bit off
1780 void java_lang_Thread::set_stillborn(oop java_thread) {
1781 java_thread->bool_field_put(_stillborn_offset, true);
1782 }
1783
1784
1785 bool java_lang_Thread::is_alive(oop java_thread) {
1786 JavaThread* thr = java_lang_Thread::thread(java_thread);
1787 return (thr != NULL);
1788 }
1789
1790
1791 bool java_lang_Thread::is_daemon(oop java_thread) {
1792 return java_thread->bool_field(_daemon_offset) != 0;
1793 }
1794
1795
1796 void java_lang_Thread::set_daemon(oop java_thread) {
1797 java_thread->bool_field_put(_daemon_offset, true);
1798 }
1799
1800 oop java_lang_Thread::context_class_loader(oop java_thread) {
1801 return java_thread->obj_field(_contextClassLoader_offset);
1802 }
1803
1804 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1805 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1806 }
1807
1808
1809 jlong java_lang_Thread::stackSize(oop java_thread) {
1810 return java_thread->long_field(_stackSize_offset);
1811 }
1812
1813 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1814 void java_lang_Thread::set_thread_status(oop java_thread,
1815 java_lang_Thread::ThreadStatus status) {
1816 java_thread->int_field_put(_thread_status_offset, status);
1817 }
1818
1819 // Read thread status value from threadStatus field in java.lang.Thread java class.
1820 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1821 // Make sure the caller is operating on behalf of the VM or is
1822 // running VM code (state == _thread_in_vm).
1823 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1824 JavaThread::current()->thread_state() == _thread_in_vm,
1825 "Java Thread is not running in vm");
1826 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1827 }
1828
1829
1830 jlong java_lang_Thread::thread_id(oop java_thread) {
1831 return java_thread->long_field(_tid_offset);
1832 }
1833
1834 oop java_lang_Thread::park_blocker(oop java_thread) {
1835 return java_thread->obj_field(_park_blocker_offset);
1836 }
1837
1838 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1839 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1840 switch (status) {
1841 case NEW : return "NEW";
1842 case RUNNABLE : return "RUNNABLE";
1843 case SLEEPING : return "TIMED_WAITING (sleeping)";
1844 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1845 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1846 case PARKED : return "WAITING (parking)";
1847 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1848 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1849 case TERMINATED : return "TERMINATED";
1850 default : return "UNKNOWN";
1851 };
1852 }
1853 int java_lang_ThreadGroup::_parent_offset;
1854 int java_lang_ThreadGroup::_name_offset;
1855 int java_lang_ThreadGroup::_threads_offset;
1856 int java_lang_ThreadGroup::_groups_offset;
1857 int java_lang_ThreadGroup::_maxPriority_offset;
1858 int java_lang_ThreadGroup::_destroyed_offset;
1859 int java_lang_ThreadGroup::_daemon_offset;
1860 int java_lang_ThreadGroup::_nthreads_offset;
1861 int java_lang_ThreadGroup::_ngroups_offset;
1862
1863 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1864 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1865 return java_thread_group->obj_field(_parent_offset);
1866 }
1867
1868 // ("name as oop" accessor is not necessary)
1869
1870 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1871 oop name = java_thread_group->obj_field(_name_offset);
1872 // ThreadGroup.name can be null
1873 if (name != NULL) {
1874 return java_lang_String::as_utf8_string(name);
1875 }
1876 return NULL;
1877 }
1878
1879 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1880 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1881 return java_thread_group->int_field(_nthreads_offset);
1882 }
1883
1884 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1885 oop threads = java_thread_group->obj_field(_threads_offset);
1886 assert(threads != NULL, "threadgroups should have threads");
1887 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1888 return objArrayOop(threads);
1889 }
1890
1891 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1892 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1893 return java_thread_group->int_field(_ngroups_offset);
1894 }
1895
1896 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1897 oop groups = java_thread_group->obj_field(_groups_offset);
1898 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1899 return objArrayOop(groups);
1900 }
1901
1902 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1903 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1904 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1905 }
1906
1907 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1908 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1909 return java_thread_group->bool_field(_destroyed_offset) != 0;
1910 }
1911
1912 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1913 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1914 return java_thread_group->bool_field(_daemon_offset) != 0;
1915 }
1916
1917 #define THREADGROUP_FIELDS_DO(macro) \
1918 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1919 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1920 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1921 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1922 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1923 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1924 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1925 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1926 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1927
1928 void java_lang_ThreadGroup::compute_offsets() {
1929 assert(_parent_offset == 0, "offsets should be initialized only once");
1930
1931 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1932 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1933 }
1934
1935 #if INCLUDE_CDS
1936 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1937 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1938 }
1939 #endif
1940
1941 // java_lang_Throwable
1942
1943 int java_lang_Throwable::_backtrace_offset;
1944 int java_lang_Throwable::_detailMessage_offset;
1945 int java_lang_Throwable::_stackTrace_offset;
1946 int java_lang_Throwable::_depth_offset;
1947 int java_lang_Throwable::_static_unassigned_stacktrace_offset;
1948
1949 #define THROWABLE_FIELDS_DO(macro) \
1950 macro(_backtrace_offset, k, "backtrace", object_signature, false); \
1951 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \
1952 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1953 macro(_depth_offset, k, "depth", int_signature, false); \
1954 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1955
1956 void java_lang_Throwable::compute_offsets() {
1957 InstanceKlass* k = SystemDictionary::Throwable_klass();
1958 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1959 }
1960
1961 #if INCLUDE_CDS
1962 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1963 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1964 }
1965 #endif
1966
1967 oop java_lang_Throwable::unassigned_stacktrace() {
1968 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1969 oop base = ik->static_field_base_raw();
1970 return base->obj_field(_static_unassigned_stacktrace_offset);
1971 }
1972
1973 oop java_lang_Throwable::backtrace(oop throwable) {
1974 return throwable->obj_field_acquire(_backtrace_offset);
1975 }
1976
1977
1978 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1979 throwable->release_obj_field_put(_backtrace_offset, value);
1980 }
1981
1982 int java_lang_Throwable::depth(oop throwable) {
1983 return throwable->int_field(_depth_offset);
1984 }
1985
1986 void java_lang_Throwable::set_depth(oop throwable, int value) {
1987 throwable->int_field_put(_depth_offset, value);
1988 }
1989
1990 oop java_lang_Throwable::message(oop throwable) {
1991 return throwable->obj_field(_detailMessage_offset);
1992 }
1993
1994
1995 // Return Symbol for detailed_message or NULL
1996 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1997 PRESERVE_EXCEPTION_MARK; // Keep original exception
1998 oop detailed_message = java_lang_Throwable::message(throwable);
1999 if (detailed_message != NULL) {
2000 return java_lang_String::as_symbol(detailed_message);
2001 }
2002 return NULL;
2003 }
2004
2005 void java_lang_Throwable::set_message(oop throwable, oop value) {
2006 throwable->obj_field_put(_detailMessage_offset, value);
2007 }
2008
2009
2010 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2011 throwable->obj_field_put(_stackTrace_offset, st_element_array);
2012 }
2013
2014 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2015 set_stacktrace(throwable, NULL);
2016 }
2017
2018
2019 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2020 ResourceMark rm;
2021 Klass* k = throwable->klass();
2022 assert(k != NULL, "just checking");
2023 st->print("%s", k->external_name());
2024 oop msg = message(throwable);
2025 if (msg != NULL) {
2026 st->print(": %s", java_lang_String::as_utf8_string(msg));
2027 }
2028 }
2029
2030 // After this many redefines, the stack trace is unreliable.
2031 const int MAX_VERSION = USHRT_MAX;
2032
2033 static inline bool version_matches(Method* method, int version) {
2034 assert(version < MAX_VERSION, "version is too big");
2035 return method != NULL && (method->constants()->version() == version);
2036 }
2037
2038 // This class provides a simple wrapper over the internal structure of
2039 // exception backtrace to insulate users of the backtrace from needing
2040 // to know what it looks like.
2041 // The code of this class is not GC safe. Allocations can only happen
2042 // in expand().
2043 class BacktraceBuilder: public StackObj {
2044 friend class BacktraceIterator;
2045 private:
2046 Handle _backtrace;
2047 objArrayOop _head;
2048 typeArrayOop _methods;
2049 typeArrayOop _bcis;
2050 objArrayOop _mirrors;
2051 typeArrayOop _names; // Needed to insulate method name against redefinition.
2052 // True if the top frame of the backtrace is omitted because it shall be hidden.
2053 bool _has_hidden_top_frame;
2054 int _index;
2055 NoSafepointVerifier _nsv;
2056
2057 enum {
2058 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2059 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2060 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2061 trace_names_offset = java_lang_Throwable::trace_names_offset,
2062 trace_next_offset = java_lang_Throwable::trace_next_offset,
2063 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2064 trace_size = java_lang_Throwable::trace_size,
2065 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2066 };
2067
2068 // get info out of chunks
2069 static typeArrayOop get_methods(objArrayHandle chunk) {
2070 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2071 assert(methods != NULL, "method array should be initialized in backtrace");
2072 return methods;
2073 }
2074 static typeArrayOop get_bcis(objArrayHandle chunk) {
2075 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2076 assert(bcis != NULL, "bci array should be initialized in backtrace");
2077 return bcis;
2078 }
2079 static objArrayOop get_mirrors(objArrayHandle chunk) {
2080 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2081 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2082 return mirrors;
2083 }
2084 static typeArrayOop get_names(objArrayHandle chunk) {
2085 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2086 assert(names != NULL, "names array should be initialized in backtrace");
2087 return names;
2088 }
2089 static bool has_hidden_top_frame(objArrayHandle chunk) {
2090 oop hidden = chunk->obj_at(trace_hidden_offset);
2091 return hidden != NULL;
2092 }
2093
2094 public:
2095
2096 // constructor for new backtrace
2097 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2098 expand(CHECK);
2099 _backtrace = Handle(THREAD, _head);
2100 _index = 0;
2101 }
2102
2103 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2104 _methods = get_methods(backtrace);
2105 _bcis = get_bcis(backtrace);
2106 _mirrors = get_mirrors(backtrace);
2107 _names = get_names(backtrace);
2108 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2109 assert(_methods->length() == _bcis->length() &&
2110 _methods->length() == _mirrors->length() &&
2111 _mirrors->length() == _names->length(),
2112 "method and source information arrays should match");
2113
2114 // head is the preallocated backtrace
2115 _head = backtrace();
2116 _backtrace = Handle(thread, _head);
2117 _index = 0;
2118 }
2119
2120 void expand(TRAPS) {
2121 objArrayHandle old_head(THREAD, _head);
2122 PauseNoSafepointVerifier pnsv(&_nsv);
2123
2124 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2125 objArrayHandle new_head(THREAD, head);
2126
2127 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2128 typeArrayHandle new_methods(THREAD, methods);
2129
2130 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2131 typeArrayHandle new_bcis(THREAD, bcis);
2132
2133 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2134 objArrayHandle new_mirrors(THREAD, mirrors);
2135
2136 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2137 typeArrayHandle new_names(THREAD, names);
2138
2139 if (!old_head.is_null()) {
2140 old_head->obj_at_put(trace_next_offset, new_head());
2141 }
2142 new_head->obj_at_put(trace_methods_offset, new_methods());
2143 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2144 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2145 new_head->obj_at_put(trace_names_offset, new_names());
2146 new_head->obj_at_put(trace_hidden_offset, NULL);
2147
2148 _head = new_head();
2149 _methods = new_methods();
2150 _bcis = new_bcis();
2151 _mirrors = new_mirrors();
2152 _names = new_names();
2153 _index = 0;
2154 }
2155
2156 oop backtrace() {
2157 return _backtrace();
2158 }
2159
2160 inline void push(Method* method, int bci, TRAPS) {
2161 // Smear the -1 bci to 0 since the array only holds unsigned
2162 // shorts. The later line number lookup would just smear the -1
2163 // to a 0 even if it could be recorded.
2164 if (bci == SynchronizationEntryBCI) bci = 0;
2165
2166 if (_index >= trace_chunk_size) {
2167 methodHandle mhandle(THREAD, method);
2168 expand(CHECK);
2169 method = mhandle();
2170 }
2171
2172 _methods->ushort_at_put(_index, method->orig_method_idnum());
2173 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2174
2175 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2176 // klass owning the symbols alive so their refcounts aren't decremented.
2177 Symbol* name = method->name();
2178 _names->symbol_at_put(_index, name);
2179
2180 // We need to save the mirrors in the backtrace to keep the class
2181 // from being unloaded while we still have this stack trace.
2182 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2183 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2184 _index++;
2185 }
2186
2187 void set_has_hidden_top_frame(TRAPS) {
2188 if (!_has_hidden_top_frame) {
2189 // It would be nice to add java/lang/Boolean::TRUE here
2190 // to indicate that this backtrace has a hidden top frame.
2191 // But this code is used before TRUE is allocated.
2192 // Therefore let's just use an arbitrary legal oop
2193 // available right here. _methods is a short[].
2194 assert(_methods != NULL, "we need a legal oop");
2195 _has_hidden_top_frame = true;
2196 _head->obj_at_put(trace_hidden_offset, _methods);
2197 }
2198 }
2199 };
2200
2201 struct BacktraceElement : public StackObj {
2202 int _method_id;
2203 int _bci;
2204 int _version;
2205 Symbol* _name;
2206 Handle _mirror;
2207 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2208 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2209 };
2210
2211 class BacktraceIterator : public StackObj {
2212 int _index;
2213 objArrayHandle _result;
2214 objArrayHandle _mirrors;
2215 typeArrayHandle _methods;
2216 typeArrayHandle _bcis;
2217 typeArrayHandle _names;
2218
2219 void init(objArrayHandle result, Thread* thread) {
2220 // Get method id, bci, version and mirror from chunk
2221 _result = result;
2222 if (_result.not_null()) {
2223 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2224 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2225 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2226 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2227 _index = 0;
2228 }
2229 }
2230 public:
2231 BacktraceIterator(objArrayHandle result, Thread* thread) {
2232 init(result, thread);
2233 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2234 }
2235
2236 BacktraceElement next(Thread* thread) {
2237 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2238 _methods->ushort_at(_index),
2239 Backtrace::version_at(_bcis->int_at(_index)),
2240 Backtrace::bci_at(_bcis->int_at(_index)),
2241 _names->symbol_at(_index));
2242 _index++;
2243
2244 if (_index >= java_lang_Throwable::trace_chunk_size) {
2245 int next_offset = java_lang_Throwable::trace_next_offset;
2246 // Get next chunk
2247 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2248 init(result, thread);
2249 }
2250 return e;
2251 }
2252
2253 bool repeat() {
2254 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2255 }
2256 };
2257
2258
2259 // Print stack trace element to resource allocated buffer
2260 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2261 int version, int bci, Symbol* name) {
2262 ResourceMark rm;
2263
2264 // Get strings and string lengths
2265 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2266 const char* klass_name = holder->external_name();
2267 int buf_len = (int)strlen(klass_name);
2268
2269 char* method_name = name->as_C_string();
2270 buf_len += (int)strlen(method_name);
2271
2272 char* source_file_name = NULL;
2273 Symbol* source = Backtrace::get_source_file_name(holder, version);
2274 if (source != NULL) {
2275 source_file_name = source->as_C_string();
2276 buf_len += (int)strlen(source_file_name);
2277 }
2278
2279 char *module_name = NULL, *module_version = NULL;
2280 ModuleEntry* module = holder->module();
2281 if (module->is_named()) {
2282 module_name = module->name()->as_C_string();
2283 buf_len += (int)strlen(module_name);
2284 if (module->version() != NULL) {
2285 module_version = module->version()->as_C_string();
2286 buf_len += (int)strlen(module_version);
2287 }
2288 }
2289
2290 // Allocate temporary buffer with extra space for formatting and line number
2291 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2292
2293 // Print stack trace line in buffer
2294 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2295
2296 // Print module information
2297 if (module_name != NULL) {
2298 if (module_version != NULL) {
2299 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2300 } else {
2301 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2302 }
2303 }
2304
2305 // The method can be NULL if the requested class version is gone
2306 Method* method = holder->method_with_orig_idnum(method_id, version);
2307 if (!version_matches(method, version)) {
2308 strcat(buf, "Redefined)");
2309 } else {
2310 int line_number = Backtrace::get_line_number(method, bci);
2311 if (line_number == -2) {
2312 strcat(buf, "Native Method)");
2313 } else {
2314 if (source_file_name != NULL && (line_number != -1)) {
2315 // Sourcename and linenumber
2316 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2317 } else if (source_file_name != NULL) {
2318 // Just sourcename
2319 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2320 } else {
2321 // Neither sourcename nor linenumber
2322 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2323 }
2324 CompiledMethod* nm = method->code();
2325 if (WizardMode && nm != NULL) {
2326 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2327 }
2328 }
2329 }
2330
2331 st->print_cr("%s", buf);
2332 }
2333
2334 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2335 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2336 int method_id = method->orig_method_idnum();
2337 int version = method->constants()->version();
2338 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2339 }
2340
2341 /**
2342 * Print the throwable message and its stack trace plus all causes by walking the
2343 * cause chain. The output looks the same as of Throwable.printStackTrace().
2344 */
2345 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2346 // First, print the message.
2347 print(throwable(), st);
2348 st->cr();
2349
2350 // Now print the stack trace.
2351 Thread* THREAD = Thread::current();
2352 while (throwable.not_null()) {
2353 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2354 if (result.is_null()) {
2355 st->print_raw_cr("\t<<no stack trace available>>");
2356 return;
2357 }
2358 BacktraceIterator iter(result, THREAD);
2359
2360 while (iter.repeat()) {
2361 BacktraceElement bte = iter.next(THREAD);
2362 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2363 }
2364 {
2365 // Call getCause() which doesn't necessarily return the _cause field.
2366 EXCEPTION_MARK;
2367 JavaValue cause(T_OBJECT);
2368 JavaCalls::call_virtual(&cause,
2369 throwable,
2370 throwable->klass(),
2371 vmSymbols::getCause_name(),
2372 vmSymbols::void_throwable_signature(),
2373 THREAD);
2374 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2375 if (HAS_PENDING_EXCEPTION) {
2376 CLEAR_PENDING_EXCEPTION;
2377 throwable = Handle();
2378 } else {
2379 throwable = Handle(THREAD, (oop) cause.get_jobject());
2380 if (throwable.not_null()) {
2381 st->print("Caused by: ");
2382 print(throwable(), st);
2383 st->cr();
2384 }
2385 }
2386 }
2387 }
2388 }
2389
2390 /**
2391 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2392 */
2393 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2394 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2395 JavaValue result(T_VOID);
2396 JavaCalls::call_virtual(&result,
2397 throwable,
2398 SystemDictionary::Throwable_klass(),
2399 vmSymbols::printStackTrace_name(),
2400 vmSymbols::void_method_signature(),
2401 THREAD);
2402 }
2403
2404 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2405 if (!StackTraceInThrowable) return;
2406 ResourceMark rm(THREAD);
2407
2408 // Start out by clearing the backtrace for this object, in case the VM
2409 // runs out of memory while allocating the stack trace
2410 set_backtrace(throwable(), NULL);
2411 // Clear lazily constructed Java level stacktrace if refilling occurs
2412 // This is unnecessary in 1.7+ but harmless
2413 clear_stacktrace(throwable());
2414
2415 int max_depth = MaxJavaStackTraceDepth;
2416 JavaThread* thread = THREAD->as_Java_thread();
2417
2418 BacktraceBuilder bt(CHECK);
2419
2420 // If there is no Java frame just return the method that was being called
2421 // with bci 0
2422 if (!thread->has_last_Java_frame()) {
2423 if (max_depth >= 1 && method() != NULL) {
2424 bt.push(method(), 0, CHECK);
2425 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2426 set_depth(throwable(), 1);
2427 set_backtrace(throwable(), bt.backtrace());
2428 }
2429 return;
2430 }
2431
2432 // Instead of using vframe directly, this version of fill_in_stack_trace
2433 // basically handles everything by hand. This significantly improved the
2434 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2435 // See bug 6333838 for more details.
2436 // The "ASSERT" here is to verify this method generates the exactly same stack
2437 // trace as utilizing vframe.
2438 #ifdef ASSERT
2439 vframeStream st(thread);
2440 #endif
2441 int total_count = 0;
2442 RegisterMap map(thread, false);
2443 int decode_offset = 0;
2444 CompiledMethod* nm = NULL;
2445 bool skip_fillInStackTrace_check = false;
2446 bool skip_throwableInit_check = false;
2447 bool skip_hidden = !ShowHiddenFrames;
2448
2449 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2450 Method* method = NULL;
2451 int bci = 0;
2452
2453 // Compiled java method case.
2454 if (decode_offset != 0) {
2455 DebugInfoReadStream stream(nm, decode_offset);
2456 decode_offset = stream.read_int();
2457 method = (Method*)nm->metadata_at(stream.read_int());
2458 bci = stream.read_bci();
2459 } else {
2460 if (fr.is_first_frame()) break;
2461 address pc = fr.pc();
2462 if (fr.is_interpreted_frame()) {
2463 address bcp = fr.interpreter_frame_bcp();
2464 method = fr.interpreter_frame_method();
2465 bci = method->bci_from(bcp);
2466 fr = fr.sender(&map);
2467 } else {
2468 CodeBlob* cb = fr.cb();
2469 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2470 // but non nmethod
2471 fr = fr.sender(&map);
2472 if (cb == NULL || !cb->is_compiled()) {
2473 continue;
2474 }
2475 nm = cb->as_compiled_method();
2476 if (nm->method()->is_native()) {
2477 method = nm->method();
2478 bci = 0;
2479 } else {
2480 PcDesc* pd = nm->pc_desc_at(pc);
2481 decode_offset = pd->scope_decode_offset();
2482 // if decode_offset is not equal to 0, it will execute the
2483 // "compiled java method case" at the beginning of the loop.
2484 continue;
2485 }
2486 }
2487 }
2488 #ifdef ASSERT
2489 assert(st.method() == method && st.bci() == bci,
2490 "Wrong stack trace");
2491 st.next();
2492 #endif
2493
2494 // the format of the stacktrace will be:
2495 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2496 // - 0 or more <init> methods for the exception class (skipped)
2497 // - rest of the stack
2498
2499 if (!skip_fillInStackTrace_check) {
2500 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2501 throwable->is_a(method->method_holder())) {
2502 continue;
2503 }
2504 else {
2505 skip_fillInStackTrace_check = true; // gone past them all
2506 }
2507 }
2508 if (!skip_throwableInit_check) {
2509 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2510
2511 // skip <init> methods of the exception class and superclasses
2512 // This is simlar to classic VM.
2513 if (method->name() == vmSymbols::object_initializer_name() &&
2514 throwable->is_a(method->method_holder())) {
2515 continue;
2516 } else {
2517 // there are none or we've seen them all - either way stop checking
2518 skip_throwableInit_check = true;
2519 }
2520 }
2521 if (method->is_hidden()) {
2522 if (skip_hidden) {
2523 if (total_count == 0) {
2524 // The top frame will be hidden from the stack trace.
2525 bt.set_has_hidden_top_frame(CHECK);
2526 }
2527 continue;
2528 }
2529 }
2530 bt.push(method, bci, CHECK);
2531 total_count++;
2532 }
2533
2534 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2535
2536 // Put completed stack trace into throwable object
2537 set_backtrace(throwable(), bt.backtrace());
2538 set_depth(throwable(), total_count);
2539 }
2540
2541 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2542 // No-op if stack trace is disabled
2543 if (!StackTraceInThrowable) {
2544 return;
2545 }
2546
2547 // Disable stack traces for some preallocated out of memory errors
2548 if (!Universe::should_fill_in_stack_trace(throwable)) {
2549 return;
2550 }
2551
2552 PRESERVE_EXCEPTION_MARK;
2553
2554 JavaThread* thread = JavaThread::active();
2555 fill_in_stack_trace(throwable, method, thread);
2556 // ignore exceptions thrown during stack trace filling
2557 CLEAR_PENDING_EXCEPTION;
2558 }
2559
2560 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2561 // Allocate stack trace - backtrace is created but not filled in
2562
2563 // No-op if stack trace is disabled
2564 if (!StackTraceInThrowable) return;
2565 BacktraceBuilder bt(CHECK); // creates a backtrace
2566 set_backtrace(throwable(), bt.backtrace());
2567 }
2568
2569
2570 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2571 // Fill in stack trace into preallocated backtrace (no GC)
2572
2573 // No-op if stack trace is disabled
2574 if (!StackTraceInThrowable) return;
2575
2576 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2577
2578 JavaThread* THREAD = JavaThread::current();
2579
2580 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2581 assert(backtrace.not_null(), "backtrace should have been preallocated");
2582
2583 ResourceMark rm(THREAD);
2584 vframeStream st(THREAD);
2585
2586 BacktraceBuilder bt(THREAD, backtrace);
2587
2588 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2589 // methods as preallocated errors aren't created by "java" code.
2590
2591 // fill in as much stack trace as possible
2592 int chunk_count = 0;
2593 for (;!st.at_end(); st.next()) {
2594 bt.push(st.method(), st.bci(), CHECK);
2595 chunk_count++;
2596
2597 // Bail-out for deep stacks
2598 if (chunk_count >= trace_chunk_size) break;
2599 }
2600 set_depth(throwable(), chunk_count);
2601 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2602
2603 // We support the Throwable immutability protocol defined for Java 7.
2604 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2605 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2606 }
2607
2608 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2609 objArrayHandle stack_trace_array_h, TRAPS) {
2610
2611 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2612 THROW(vmSymbols::java_lang_NullPointerException());
2613 }
2614
2615 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2616
2617 if (stack_trace_array_h->length() != depth(throwable())) {
2618 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2619 }
2620
2621 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2622 BacktraceIterator iter(result, THREAD);
2623
2624 int index = 0;
2625 while (iter.repeat()) {
2626 BacktraceElement bte = iter.next(THREAD);
2627
2628 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2629
2630 if (stack_trace_element.is_null()) {
2631 THROW(vmSymbols::java_lang_NullPointerException());
2632 }
2633
2634 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2635 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2636
2637 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2638 method,
2639 bte._version,
2640 bte._bci,
2641 bte._name, CHECK);
2642 }
2643 }
2644
2645 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2646 Thread* THREAD = Thread::current();
2647 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2648 BacktraceIterator iter(result, THREAD);
2649 // No backtrace available.
2650 if (!iter.repeat()) return false;
2651
2652 // If the exception happened in a frame that has been hidden, i.e.,
2653 // omitted from the back trace, we can not compute the message.
2654 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2655 if (hidden != NULL) {
2656 return false;
2657 }
2658
2659 // Get first backtrace element.
2660 BacktraceElement bte = iter.next(THREAD);
2661
2662 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2663 assert(holder != NULL, "first element should be non-null");
2664 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2665
2666 // Original version is no longer available.
2667 if (m == NULL || !version_matches(m, bte._version)) {
2668 return false;
2669 }
2670
2671 *method = m;
2672 *bci = bte._bci;
2673 return true;
2674 }
2675
2676 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2677 // Allocate java.lang.StackTraceElement instance
2678 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2679 assert(k != NULL, "must be loaded in 1.4+");
2680 if (k->should_be_initialized()) {
2681 k->initialize(CHECK_NULL);
2682 }
2683
2684 Handle element = k->allocate_instance_handle(CHECK_NULL);
2685
2686 int version = method->constants()->version();
2687 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2688 return element();
2689 }
2690
2691 void java_lang_StackTraceElement::fill_in(Handle element,
2692 InstanceKlass* holder, const methodHandle& method,
2693 int version, int bci, Symbol* name, TRAPS) {
2694 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2695
2696 ResourceMark rm(THREAD);
2697 HandleMark hm(THREAD);
2698
2699 // Fill in class name
2700 Handle java_class(THREAD, holder->java_mirror());
2701 oop classname = java_lang_Class::name(java_class, CHECK);
2702 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2703 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2704
2705 oop loader = holder->class_loader();
2706 if (loader != NULL) {
2707 oop loader_name = java_lang_ClassLoader::name(loader);
2708 if (loader_name != NULL)
2709 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2710 }
2711
2712 // Fill in method name
2713 oop methodname = StringTable::intern(name, CHECK);
2714 java_lang_StackTraceElement::set_methodName(element(), methodname);
2715
2716 // Fill in module name and version
2717 ModuleEntry* module = holder->module();
2718 if (module->is_named()) {
2719 oop module_name = StringTable::intern(module->name(), CHECK);
2720 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2721 oop module_version;
2722 if (module->version() != NULL) {
2723 module_version = StringTable::intern(module->version(), CHECK);
2724 } else {
2725 module_version = NULL;
2726 }
2727 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2728 }
2729
2730 if (method() == NULL || !version_matches(method(), version)) {
2731 // The method was redefined, accurate line number information isn't available
2732 java_lang_StackTraceElement::set_fileName(element(), NULL);
2733 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2734 } else {
2735 Symbol* source;
2736 oop source_file;
2737 int line_number;
2738 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2739
2740 java_lang_StackTraceElement::set_fileName(element(), source_file);
2741 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2742 }
2743 }
2744
2745 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2746 InstanceKlass* holder,
2747 int version,
2748 const methodHandle& method,
2749 int bci,
2750 Symbol*& source,
2751 oop& source_file,
2752 int& line_number, TRAPS) {
2753 // Fill in source file name and line number.
2754 source = Backtrace::get_source_file_name(holder, version);
2755 source_file = java_lang_Class::source_file(java_class());
2756 if (source != NULL) {
2757 // Class was not redefined. We can trust its cache if set,
2758 // else we have to initialize it.
2759 if (source_file == NULL) {
2760 source_file = StringTable::intern(source, CHECK);
2761 java_lang_Class::set_source_file(java_class(), source_file);
2762 }
2763 } else {
2764 // Class was redefined. Dump the cache if it was set.
2765 if (source_file != NULL) {
2766 source_file = NULL;
2767 java_lang_Class::set_source_file(java_class(), source_file);
2768 }
2769 }
2770 line_number = Backtrace::get_line_number(method(), bci);
2771 }
2772
2773 #if INCLUDE_JVMCI
2774 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2775 Symbol*& filename, int& line_number, TRAPS) {
2776 ResourceMark rm(THREAD);
2777 HandleMark hm(THREAD);
2778
2779 filename = NULL;
2780 line_number = -1;
2781
2782 oop source_file;
2783 int version = method->constants()->version();
2784 InstanceKlass* holder = method->method_holder();
2785 Handle java_class(THREAD, holder->java_mirror());
2786 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2787 }
2788 #endif // INCLUDE_JVMCI
2789
2790 // java_lang_StackFrameInfo
2791
2792 int java_lang_StackFrameInfo::_memberName_offset;
2793 int java_lang_StackFrameInfo::_bci_offset;
2794 int java_lang_StackFrameInfo::_version_offset;
2795
2796 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2797 macro(_memberName_offset, k, "memberName", object_signature, false); \
2798 macro(_bci_offset, k, "bci", int_signature, false)
2799
2800 void java_lang_StackFrameInfo::compute_offsets() {
2801 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2802 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2803 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2804 }
2805
2806 #if INCLUDE_CDS
2807 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2808 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2809 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2810 }
2811 #endif
2812
2813 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2814 HandleMark hm(THREAD);
2815 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2816 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2817 // we should expand MemberName::name when Throwable uses StackTrace
2818 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2819 return method;
2820 }
2821
2822 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2823 // set Method* or mid/cpref
2824 HandleMark hm(THREAD);
2825 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2826 InstanceKlass* ik = method->method_holder();
2827 CallInfo info(method(), ik, CHECK);
2828 MethodHandles::init_method_MemberName(mname, info, THREAD);
2829 // set bci
2830 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2831 // method may be redefined; store the version
2832 int version = method->constants()->version();
2833 assert((jushort)version == version, "version should be short");
2834 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2835 }
2836
2837 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2838 ResourceMark rm(THREAD);
2839 HandleMark hm(THREAD);
2840 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2841 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2842 InstanceKlass* holder = InstanceKlass::cast(clazz);
2843 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2844
2845 short version = stackFrame->short_field(_version_offset);
2846 int bci = stackFrame->int_field(_bci_offset);
2847 Symbol* name = method->name();
2848 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2849 version, bci, name, CHECK);
2850 }
2851
2852 void java_lang_StackFrameInfo::set_version(oop element, short value) {
2853 element->short_field_put(_version_offset, value);
2854 }
2855
2856 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
2857 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
2858 element->int_field_put(_bci_offset, value);
2859 }
2860
2861 int java_lang_LiveStackFrameInfo::_monitors_offset;
2862 int java_lang_LiveStackFrameInfo::_locals_offset;
2863 int java_lang_LiveStackFrameInfo::_operands_offset;
2864 int java_lang_LiveStackFrameInfo::_mode_offset;
2865
2866 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2867 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2868 macro(_locals_offset, k, "locals", object_array_signature, false); \
2869 macro(_operands_offset, k, "operands", object_array_signature, false); \
2870 macro(_mode_offset, k, "mode", int_signature, false)
2871
2872 void java_lang_LiveStackFrameInfo::compute_offsets() {
2873 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2874 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2875 }
2876
2877 #if INCLUDE_CDS
2878 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2879 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2880 }
2881 #endif
2882
2883 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
2884 element->obj_field_put(_monitors_offset, value);
2885 }
2886
2887 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
2888 element->obj_field_put(_locals_offset, value);
2889 }
2890
2891 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
2892 element->obj_field_put(_operands_offset, value);
2893 }
2894
2895 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
2896 element->int_field_put(_mode_offset, value);
2897 }
2898
2899
2900 // java_lang_AccessibleObject
2901
2902 int java_lang_reflect_AccessibleObject::_override_offset;
2903
2904 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2905 macro(_override_offset, k, "override", bool_signature, false)
2906
2907 void java_lang_reflect_AccessibleObject::compute_offsets() {
2908 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2909 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2910 }
2911
2912 #if INCLUDE_CDS
2913 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2914 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2915 }
2916 #endif
2917
2918 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2919 return (jboolean) reflect->bool_field(_override_offset);
2920 }
2921
2922 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2923 reflect->bool_field_put(_override_offset, (int) value);
2924 }
2925
2926 // java_lang_reflect_Method
2927
2928 int java_lang_reflect_Method::_clazz_offset;
2929 int java_lang_reflect_Method::_name_offset;
2930 int java_lang_reflect_Method::_returnType_offset;
2931 int java_lang_reflect_Method::_parameterTypes_offset;
2932 int java_lang_reflect_Method::_exceptionTypes_offset;
2933 int java_lang_reflect_Method::_slot_offset;
2934 int java_lang_reflect_Method::_modifiers_offset;
2935 int java_lang_reflect_Method::_signature_offset;
2936 int java_lang_reflect_Method::_annotations_offset;
2937 int java_lang_reflect_Method::_parameter_annotations_offset;
2938 int java_lang_reflect_Method::_annotation_default_offset;
2939
2940 #define METHOD_FIELDS_DO(macro) \
2941 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2942 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
2943 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2944 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2945 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2946 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2947 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2948 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2949 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2950 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2951 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2952
2953 void java_lang_reflect_Method::compute_offsets() {
2954 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2955 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2956 }
2957
2958 #if INCLUDE_CDS
2959 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2960 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2961 }
2962 #endif
2963
2964 Handle java_lang_reflect_Method::create(TRAPS) {
2965 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2966 Klass* klass = SystemDictionary::reflect_Method_klass();
2967 // This class is eagerly initialized during VM initialization, since we keep a refence
2968 // to one of the methods
2969 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2970 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2971 }
2972
2973 oop java_lang_reflect_Method::clazz(oop reflect) {
2974 return reflect->obj_field(_clazz_offset);
2975 }
2976
2977 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2978 reflect->obj_field_put(_clazz_offset, value);
2979 }
2980
2981 int java_lang_reflect_Method::slot(oop reflect) {
2982 return reflect->int_field(_slot_offset);
2983 }
2984
2985 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2986 reflect->int_field_put(_slot_offset, value);
2987 }
2988
2989 void java_lang_reflect_Method::set_name(oop method, oop value) {
2990 method->obj_field_put(_name_offset, value);
2991 }
2992
2993 oop java_lang_reflect_Method::return_type(oop method) {
2994 return method->obj_field(_returnType_offset);
2995 }
2996
2997 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2998 method->obj_field_put(_returnType_offset, value);
2999 }
3000
3001 oop java_lang_reflect_Method::parameter_types(oop method) {
3002 return method->obj_field(_parameterTypes_offset);
3003 }
3004
3005 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
3006 method->obj_field_put(_parameterTypes_offset, value);
3007 }
3008
3009 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
3010 method->obj_field_put(_exceptionTypes_offset, value);
3011 }
3012
3013 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
3014 method->int_field_put(_modifiers_offset, value);
3015 }
3016
3017 void java_lang_reflect_Method::set_signature(oop method, oop value) {
3018 method->obj_field_put(_signature_offset, value);
3019 }
3020
3021 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
3022 method->obj_field_put(_annotations_offset, value);
3023 }
3024
3025 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
3026 method->obj_field_put(_parameter_annotations_offset, value);
3027 }
3028
3029 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
3030 method->obj_field_put(_annotation_default_offset, value);
3031 }
3032
3033 int java_lang_reflect_Constructor::_clazz_offset;
3034 int java_lang_reflect_Constructor::_parameterTypes_offset;
3035 int java_lang_reflect_Constructor::_exceptionTypes_offset;
3036 int java_lang_reflect_Constructor::_slot_offset;
3037 int java_lang_reflect_Constructor::_modifiers_offset;
3038 int java_lang_reflect_Constructor::_signature_offset;
3039 int java_lang_reflect_Constructor::_annotations_offset;
3040 int java_lang_reflect_Constructor::_parameter_annotations_offset;
3041
3042 #define CONSTRUCTOR_FIELDS_DO(macro) \
3043 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3044 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3045 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3046 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3047 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3048 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3049 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
3050 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
3051
3052 void java_lang_reflect_Constructor::compute_offsets() {
3053 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
3054 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3055 }
3056
3057 #if INCLUDE_CDS
3058 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3059 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3060 }
3061 #endif
3062
3063 Handle java_lang_reflect_Constructor::create(TRAPS) {
3064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3065 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3066 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3067 InstanceKlass* ik = InstanceKlass::cast(k);
3068 // Ensure it is initialized
3069 ik->initialize(CHECK_NH);
3070 return ik->allocate_instance_handle(THREAD);
3071 }
3072
3073 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3074 return reflect->obj_field(_clazz_offset);
3075 }
3076
3077 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3078 reflect->obj_field_put(_clazz_offset, value);
3079 }
3080
3081 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3082 return constructor->obj_field(_parameterTypes_offset);
3083 }
3084
3085 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3086 constructor->obj_field_put(_parameterTypes_offset, value);
3087 }
3088
3089 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3090 constructor->obj_field_put(_exceptionTypes_offset, value);
3091 }
3092
3093 int java_lang_reflect_Constructor::slot(oop reflect) {
3094 return reflect->int_field(_slot_offset);
3095 }
3096
3097 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3098 reflect->int_field_put(_slot_offset, value);
3099 }
3100
3101 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3102 constructor->int_field_put(_modifiers_offset, value);
3103 }
3104
3105 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3106 constructor->obj_field_put(_signature_offset, value);
3107 }
3108
3109 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3110 constructor->obj_field_put(_annotations_offset, value);
3111 }
3112
3113 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3114 method->obj_field_put(_parameter_annotations_offset, value);
3115 }
3116
3117 int java_lang_reflect_Field::_clazz_offset;
3118 int java_lang_reflect_Field::_name_offset;
3119 int java_lang_reflect_Field::_type_offset;
3120 int java_lang_reflect_Field::_slot_offset;
3121 int java_lang_reflect_Field::_modifiers_offset;
3122 int java_lang_reflect_Field::_trusted_final_offset;
3123 int java_lang_reflect_Field::_signature_offset;
3124 int java_lang_reflect_Field::_annotations_offset;
3125
3126 #define FIELD_FIELDS_DO(macro) \
3127 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3128 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3129 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3130 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3131 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3132 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3133 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3134 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3135
3136 void java_lang_reflect_Field::compute_offsets() {
3137 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3138 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3139 }
3140
3141 #if INCLUDE_CDS
3142 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3143 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3144 }
3145 #endif
3146
3147 Handle java_lang_reflect_Field::create(TRAPS) {
3148 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3149 Symbol* name = vmSymbols::java_lang_reflect_Field();
3150 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3151 InstanceKlass* ik = InstanceKlass::cast(k);
3152 // Ensure it is initialized
3153 ik->initialize(CHECK_NH);
3154 return ik->allocate_instance_handle(THREAD);
3155 }
3156
3157 oop java_lang_reflect_Field::clazz(oop reflect) {
3158 return reflect->obj_field(_clazz_offset);
3159 }
3160
3161 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3162 reflect->obj_field_put(_clazz_offset, value);
3163 }
3164
3165 oop java_lang_reflect_Field::name(oop field) {
3166 return field->obj_field(_name_offset);
3167 }
3168
3169 void java_lang_reflect_Field::set_name(oop field, oop value) {
3170 field->obj_field_put(_name_offset, value);
3171 }
3172
3173 oop java_lang_reflect_Field::type(oop field) {
3174 return field->obj_field(_type_offset);
3175 }
3176
3177 void java_lang_reflect_Field::set_type(oop field, oop value) {
3178 field->obj_field_put(_type_offset, value);
3179 }
3180
3181 int java_lang_reflect_Field::slot(oop reflect) {
3182 return reflect->int_field(_slot_offset);
3183 }
3184
3185 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3186 reflect->int_field_put(_slot_offset, value);
3187 }
3188
3189 int java_lang_reflect_Field::modifiers(oop field) {
3190 return field->int_field(_modifiers_offset);
3191 }
3192
3193 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3194 field->int_field_put(_modifiers_offset, value);
3195 }
3196
3197 void java_lang_reflect_Field::set_trusted_final(oop field) {
3198 field->bool_field_put(_trusted_final_offset, true);
3199 }
3200
3201 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3202 field->obj_field_put(_signature_offset, value);
3203 }
3204
3205 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3206 field->obj_field_put(_annotations_offset, value);
3207 }
3208
3209 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3210 // Allocate java.lang.reflect.RecordComponent instance
3211 HandleMark hm(THREAD);
3212 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3213 assert(ik != NULL, "must be loaded");
3214 ik->initialize(CHECK_NULL);
3215
3216 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3217
3218 Handle decl_class(THREAD, holder->java_mirror());
3219 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3220
3221 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3222 oop component_name = StringTable::intern(name, CHECK_NULL);
3223 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3224
3225 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3226 Handle component_type_h =
3227 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3228 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3229
3230 Method* accessor_method = NULL;
3231 {
3232 // Prepend "()" to type to create the full method signature.
3233 ResourceMark rm(THREAD);
3234 int sig_len = type->utf8_length() + 3; // "()" and null char
3235 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3236 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3237 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3238 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find);
3239 }
3240
3241 if (accessor_method != NULL) {
3242 methodHandle method(THREAD, accessor_method);
3243 oop m = Reflection::new_method(method, false, CHECK_NULL);
3244 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3245 } else {
3246 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3247 }
3248
3249 int sig_index = component->generic_signature_index();
3250 if (sig_index > 0) {
3251 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3252 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3253 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3254 } else {
3255 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3256 }
3257
3258 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3259 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3260
3261 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3262 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3263
3264 return element();
3265 }
3266
3267 int reflect_ConstantPool::_oop_offset;
3268
3269 #define CONSTANTPOOL_FIELDS_DO(macro) \
3270 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3271
3272 void reflect_ConstantPool::compute_offsets() {
3273 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3274 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3275 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3276 }
3277
3278 #if INCLUDE_CDS
3279 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3280 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3281 }
3282 #endif
3283
3284 int java_lang_reflect_Parameter::_name_offset;
3285 int java_lang_reflect_Parameter::_modifiers_offset;
3286 int java_lang_reflect_Parameter::_index_offset;
3287 int java_lang_reflect_Parameter::_executable_offset;
3288
3289 #define PARAMETER_FIELDS_DO(macro) \
3290 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3291 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3292 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \
3293 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3294
3295 void java_lang_reflect_Parameter::compute_offsets() {
3296 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3297 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3298 }
3299
3300 #if INCLUDE_CDS
3301 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3302 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3303 }
3304 #endif
3305
3306 Handle java_lang_reflect_Parameter::create(TRAPS) {
3307 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3308 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3309 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3310 InstanceKlass* ik = InstanceKlass::cast(k);
3311 // Ensure it is initialized
3312 ik->initialize(CHECK_NH);
3313 return ik->allocate_instance_handle(THREAD);
3314 }
3315
3316 oop java_lang_reflect_Parameter::name(oop param) {
3317 return param->obj_field(_name_offset);
3318 }
3319
3320 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3321 param->obj_field_put(_name_offset, value);
3322 }
3323
3324 int java_lang_reflect_Parameter::modifiers(oop param) {
3325 return param->int_field(_modifiers_offset);
3326 }
3327
3328 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3329 param->int_field_put(_modifiers_offset, value);
3330 }
3331
3332 int java_lang_reflect_Parameter::index(oop param) {
3333 return param->int_field(_index_offset);
3334 }
3335
3336 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3337 param->int_field_put(_index_offset, value);
3338 }
3339
3340 oop java_lang_reflect_Parameter::executable(oop param) {
3341 return param->obj_field(_executable_offset);
3342 }
3343
3344 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3345 param->obj_field_put(_executable_offset, value);
3346 }
3347
3348 // java_lang_Module
3349
3350 int java_lang_Module::_loader_offset;
3351 int java_lang_Module::_name_offset;
3352 int java_lang_Module::_module_entry_offset;
3353
3354 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3355 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3356 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3357 vmSymbols::java_lang_module_init_signature(),
3358 loader, module_name, CHECK_NH);
3359 }
3360
3361 #define MODULE_FIELDS_DO(macro) \
3362 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3363 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false)
3364
3365 void java_lang_Module::compute_offsets() {
3366 InstanceKlass* k = SystemDictionary::Module_klass();
3367 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3368 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3369 }
3370
3371 #if INCLUDE_CDS
3372 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3373 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3374 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3375 }
3376 #endif
3377
3378 oop java_lang_Module::loader(oop module) {
3379 return module->obj_field(_loader_offset);
3380 }
3381
3382 void java_lang_Module::set_loader(oop module, oop value) {
3383 module->obj_field_put(_loader_offset, value);
3384 }
3385
3386 oop java_lang_Module::name(oop module) {
3387 return module->obj_field(_name_offset);
3388 }
3389
3390 void java_lang_Module::set_name(oop module, oop value) {
3391 module->obj_field_put(_name_offset, value);
3392 }
3393
3394 ModuleEntry* java_lang_Module::module_entry_raw(oop module) {
3395 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3396 assert(module != NULL, "module can't be null");
3397 assert(oopDesc::is_oop(module), "module must be oop");
3398
3399 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3400 return module_entry;
3401 }
3402
3403 ModuleEntry* java_lang_Module::module_entry(oop module) {
3404 ModuleEntry* module_entry = module_entry_raw(module);
3405 if (module_entry == NULL) {
3406 // If the inject field containing the ModuleEntry* is null then return the
3407 // class loader's unnamed module.
3408 oop loader = java_lang_Module::loader(module);
3409 Handle h_loader = Handle(Thread::current(), loader);
3410 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3411 return loader_cld->unnamed_module();
3412 }
3413 return module_entry;
3414 }
3415
3416 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3417 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset");
3418 assert(module != NULL, "module can't be null");
3419 assert(oopDesc::is_oop(module), "module must be oop");
3420 module->address_field_put(_module_entry_offset, (address)module_entry);
3421 }
3422
3423 Handle reflect_ConstantPool::create(TRAPS) {
3424 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3425 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3426 // Ensure it is initialized
3427 k->initialize(CHECK_NH);
3428 return k->allocate_instance_handle(THREAD);
3429 }
3430
3431
3432 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3433 oop mirror = value->pool_holder()->java_mirror();
3434 // Save the mirror to get back the constant pool.
3435 reflect->obj_field_put(_oop_offset, mirror);
3436 }
3437
3438 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3439
3440 oop mirror = reflect->obj_field(_oop_offset);
3441 Klass* k = java_lang_Class::as_Klass(mirror);
3442 assert(k->is_instance_klass(), "Must be");
3443
3444 // Get the constant pool back from the klass. Since class redefinition
3445 // merges the new constant pool into the old, this is essentially the
3446 // same constant pool as the original. If constant pool merging is
3447 // no longer done in the future, this will have to change to save
3448 // the original.
3449 return InstanceKlass::cast(k)->constants();
3450 }
3451
3452 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3453
3454 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3455 macro(_base_offset, k, "base", object_signature, false)
3456
3457 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3458 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3459 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3460 }
3461
3462 #if INCLUDE_CDS
3463 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3464 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3465 }
3466 #endif
3467
3468 // Support for java_lang_ref_Reference
3469
3470 bool java_lang_ref_Reference::_offsets_initialized;
3471
3472 int java_lang_ref_Reference::_referent_offset;
3473 int java_lang_ref_Reference::_queue_offset;
3474 int java_lang_ref_Reference::_next_offset;
3475 int java_lang_ref_Reference::_discovered_offset;
3476
3477 #define REFERENCE_FIELDS_DO(macro) \
3478 macro(_referent_offset, k, "referent", object_signature, false); \
3479 macro(_queue_offset, k, "queue", referencequeue_signature, false); \
3480 macro(_next_offset, k, "next", reference_signature, false); \
3481 macro(_discovered_offset, k, "discovered", reference_signature, false);
3482
3483 void java_lang_ref_Reference::compute_offsets() {
3484 if (_offsets_initialized) {
3485 return;
3486 }
3487 _offsets_initialized = true;
3488 InstanceKlass* k = SystemDictionary::Reference_klass();
3489 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3490 }
3491
3492 #if INCLUDE_CDS
3493 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) {
3494 f->do_bool(&_offsets_initialized);
3495 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3496 }
3497 #endif
3498
3499 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3500 assert(obj != NULL, "sanity");
3501 if (offset != _referent_offset) {
3502 return false;
3503 }
3504
3505 Klass* k = obj->klass();
3506 if (!k->is_instance_klass()) {
3507 return false;
3508 }
3509
3510 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3511 bool is_reference = ik->reference_type() != REF_NONE;
3512 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3513 return is_reference;
3514 }
3515
3516 int java_lang_boxing_object::_value_offset;
3517 int java_lang_boxing_object::_long_value_offset;
3518
3519 #define BOXING_FIELDS_DO(macro) \
3520 macro(_value_offset, integerKlass, "value", int_signature, false); \
3521 macro(_long_value_offset, longKlass, "value", long_signature, false);
3522
3523 void java_lang_boxing_object::compute_offsets() {
3524 InstanceKlass* integerKlass = SystemDictionary::Integer_klass();
3525 InstanceKlass* longKlass = SystemDictionary::Long_klass();
3526 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3527 }
3528
3529 #if INCLUDE_CDS
3530 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3531 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3532 }
3533 #endif
3534
3535 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3536 Klass* k = SystemDictionary::box_klass(type);
3537 if (k == NULL) return NULL;
3538 InstanceKlass* ik = InstanceKlass::cast(k);
3539 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3540 return ik->allocate_instance(THREAD);
3541 }
3542
3543
3544 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3545 oop box = initialize_and_allocate(type, CHECK_NULL);
3546 if (box == NULL) return NULL;
3547 switch (type) {
3548 case T_BOOLEAN:
3549 box->bool_field_put(_value_offset, value->z);
3550 break;
3551 case T_CHAR:
3552 box->char_field_put(_value_offset, value->c);
3553 break;
3554 case T_FLOAT:
3555 box->float_field_put(_value_offset, value->f);
3556 break;
3557 case T_DOUBLE:
3558 box->double_field_put(_long_value_offset, value->d);
3559 break;
3560 case T_BYTE:
3561 box->byte_field_put(_value_offset, value->b);
3562 break;
3563 case T_SHORT:
3564 box->short_field_put(_value_offset, value->s);
3565 break;
3566 case T_INT:
3567 box->int_field_put(_value_offset, value->i);
3568 break;
3569 case T_LONG:
3570 box->long_field_put(_long_value_offset, value->j);
3571 break;
3572 default:
3573 return NULL;
3574 }
3575 return box;
3576 }
3577
3578
3579 BasicType java_lang_boxing_object::basic_type(oop box) {
3580 if (box == NULL) return T_ILLEGAL;
3581 BasicType type = SystemDictionary::box_klass_type(box->klass());
3582 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3583 return T_ILLEGAL;
3584 return type;
3585 }
3586
3587
3588 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3589 BasicType type = SystemDictionary::box_klass_type(box->klass());
3590 switch (type) {
3591 case T_BOOLEAN:
3592 value->z = box->bool_field(_value_offset);
3593 break;
3594 case T_CHAR:
3595 value->c = box->char_field(_value_offset);
3596 break;
3597 case T_FLOAT:
3598 value->f = box->float_field(_value_offset);
3599 break;
3600 case T_DOUBLE:
3601 value->d = box->double_field(_long_value_offset);
3602 break;
3603 case T_BYTE:
3604 value->b = box->byte_field(_value_offset);
3605 break;
3606 case T_SHORT:
3607 value->s = box->short_field(_value_offset);
3608 break;
3609 case T_INT:
3610 value->i = box->int_field(_value_offset);
3611 break;
3612 case T_LONG:
3613 value->j = box->long_field(_long_value_offset);
3614 break;
3615 default:
3616 return T_ILLEGAL;
3617 } // end switch
3618 return type;
3619 }
3620
3621
3622 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3623 BasicType type = SystemDictionary::box_klass_type(box->klass());
3624 switch (type) {
3625 case T_BOOLEAN:
3626 box->bool_field_put(_value_offset, value->z);
3627 break;
3628 case T_CHAR:
3629 box->char_field_put(_value_offset, value->c);
3630 break;
3631 case T_FLOAT:
3632 box->float_field_put(_value_offset, value->f);
3633 break;
3634 case T_DOUBLE:
3635 box->double_field_put(_long_value_offset, value->d);
3636 break;
3637 case T_BYTE:
3638 box->byte_field_put(_value_offset, value->b);
3639 break;
3640 case T_SHORT:
3641 box->short_field_put(_value_offset, value->s);
3642 break;
3643 case T_INT:
3644 box->int_field_put(_value_offset, value->i);
3645 break;
3646 case T_LONG:
3647 box->long_field_put(_long_value_offset, value->j);
3648 break;
3649 default:
3650 return T_ILLEGAL;
3651 } // end switch
3652 return type;
3653 }
3654
3655
3656 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3657 switch (type) {
3658 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3659 case T_CHAR: st->print("%d", value->c); break;
3660 case T_BYTE: st->print("%d", value->b); break;
3661 case T_SHORT: st->print("%d", value->s); break;
3662 case T_INT: st->print("%d", value->i); break;
3663 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3664 case T_FLOAT: st->print("%f", value->f); break;
3665 case T_DOUBLE: st->print("%lf", value->d); break;
3666 default: st->print("type %d?", type); break;
3667 }
3668 }
3669
3670
3671 // Support for java_lang_ref_SoftReference
3672 //
3673
3674 int java_lang_ref_SoftReference::_timestamp_offset;
3675 int java_lang_ref_SoftReference::_static_clock_offset;
3676
3677 #define SOFTREFERENCE_FIELDS_DO(macro) \
3678 macro(_timestamp_offset, k, "timestamp", long_signature, false); \
3679 macro(_static_clock_offset, k, "clock", long_signature, true)
3680
3681 void java_lang_ref_SoftReference::compute_offsets() {
3682 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3683 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3684 }
3685
3686 #if INCLUDE_CDS
3687 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3688 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3689 }
3690 #endif
3691
3692 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3693 return ref->long_field(_timestamp_offset);
3694 }
3695
3696 jlong java_lang_ref_SoftReference::clock() {
3697 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3698 oop base = ik->static_field_base_raw();
3699 return base->long_field(_static_clock_offset);
3700 }
3701
3702 void java_lang_ref_SoftReference::set_clock(jlong value) {
3703 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3704 oop base = ik->static_field_base_raw();
3705 base->long_field_put(_static_clock_offset, value);
3706 }
3707
3708 // Support for java_lang_invoke_DirectMethodHandle
3709
3710 int java_lang_invoke_DirectMethodHandle::_member_offset;
3711
3712 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3713 oop member_name = NULL;
3714 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3715 "a DirectMethodHandle oop is expected");
3716 return dmh->obj_field(_member_offset);
3717 }
3718
3719 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3720 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3721
3722 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3723 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3724 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3725 }
3726
3727 #if INCLUDE_CDS
3728 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3729 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3730 }
3731 #endif
3732
3733 // Support for java_lang_invoke_MethodHandle
3734
3735 int java_lang_invoke_MethodHandle::_type_offset;
3736 int java_lang_invoke_MethodHandle::_form_offset;
3737
3738 int java_lang_invoke_MemberName::_clazz_offset;
3739 int java_lang_invoke_MemberName::_name_offset;
3740 int java_lang_invoke_MemberName::_type_offset;
3741 int java_lang_invoke_MemberName::_flags_offset;
3742 int java_lang_invoke_MemberName::_method_offset;
3743 int java_lang_invoke_MemberName::_vmindex_offset;
3744
3745 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3746 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3747
3748 int java_lang_invoke_LambdaForm::_vmentry_offset;
3749
3750 #define METHODHANDLE_FIELDS_DO(macro) \
3751 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3752 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3753
3754 void java_lang_invoke_MethodHandle::compute_offsets() {
3755 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3756 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3757 }
3758
3759 #if INCLUDE_CDS
3760 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3761 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3762 }
3763 #endif
3764
3765 #define MEMBERNAME_FIELDS_DO(macro) \
3766 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3767 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3768 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3769 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3770 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3771
3772 void java_lang_invoke_MemberName::compute_offsets() {
3773 InstanceKlass* k = SystemDictionary::MemberName_klass();
3774 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3775 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3776 }
3777
3778 #if INCLUDE_CDS
3779 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3780 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3781 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3782 }
3783 #endif
3784
3785 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3786 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3787 assert(k != NULL, "jdk mismatch");
3788 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3789 }
3790
3791 #if INCLUDE_CDS
3792 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3793 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3794 }
3795 #endif
3796
3797 #define LAMBDAFORM_FIELDS_DO(macro) \
3798 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3799
3800 void java_lang_invoke_LambdaForm::compute_offsets() {
3801 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3802 assert (k != NULL, "jdk mismatch");
3803 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3804 }
3805
3806 #if INCLUDE_CDS
3807 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3808 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3809 }
3810 #endif
3811
3812 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3813 return obj != NULL && is_subclass(obj->klass());
3814 }
3815
3816
3817 oop java_lang_invoke_MethodHandle::type(oop mh) {
3818 return mh->obj_field(_type_offset);
3819 }
3820
3821 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3822 mh->obj_field_put(_type_offset, mtype);
3823 }
3824
3825 oop java_lang_invoke_MethodHandle::form(oop mh) {
3826 assert(_form_offset != 0, "");
3827 return mh->obj_field(_form_offset);
3828 }
3829
3830 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3831 assert(_form_offset != 0, "");
3832 mh->obj_field_put(_form_offset, lform);
3833 }
3834
3835 /// MemberName accessors
3836
3837 oop java_lang_invoke_MemberName::clazz(oop mname) {
3838 assert(is_instance(mname), "wrong type");
3839 return mname->obj_field(_clazz_offset);
3840 }
3841
3842 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3843 assert(is_instance(mname), "wrong type");
3844 mname->obj_field_put(_clazz_offset, clazz);
3845 }
3846
3847 oop java_lang_invoke_MemberName::name(oop mname) {
3848 assert(is_instance(mname), "wrong type");
3849 return mname->obj_field(_name_offset);
3850 }
3851
3852 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3853 assert(is_instance(mname), "wrong type");
3854 mname->obj_field_put(_name_offset, name);
3855 }
3856
3857 oop java_lang_invoke_MemberName::type(oop mname) {
3858 assert(is_instance(mname), "wrong type");
3859 return mname->obj_field(_type_offset);
3860 }
3861
3862 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3863 assert(is_instance(mname), "wrong type");
3864 mname->obj_field_put(_type_offset, type);
3865 }
3866
3867 int java_lang_invoke_MemberName::flags(oop mname) {
3868 assert(is_instance(mname), "wrong type");
3869 return mname->int_field(_flags_offset);
3870 }
3871
3872 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3873 assert(is_instance(mname), "wrong type");
3874 mname->int_field_put(_flags_offset, flags);
3875 }
3876
3877
3878 // Return vmtarget from ResolvedMethodName method field through indirection
3879 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3880 assert(is_instance(mname), "wrong type");
3881 oop method = mname->obj_field(_method_offset);
3882 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3883 }
3884
3885 bool java_lang_invoke_MemberName::is_method(oop mname) {
3886 assert(is_instance(mname), "must be MemberName");
3887 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3888 }
3889
3890 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3891 assert(is_instance(mname), "wrong type");
3892 mname->obj_field_put(_method_offset, resolved_method);
3893 }
3894
3895 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3896 assert(is_instance(mname), "wrong type");
3897 return (intptr_t) mname->address_field(_vmindex_offset);
3898 }
3899
3900 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3901 assert(is_instance(mname), "wrong type");
3902 mname->address_field_put(_vmindex_offset, (address) index);
3903 }
3904
3905
3906 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3907 assert(is_instance(resolved_method), "wrong type");
3908 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3909 assert(m->is_method(), "must be");
3910 return m;
3911 }
3912
3913 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3914 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3915 assert(is_instance(resolved_method), "wrong type");
3916 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3917 }
3918
3919 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3920 assert(is_instance(resolved_method), "wrong type");
3921 resolved_method->obj_field_put(_vmholder_offset, holder);
3922 }
3923
3924 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3925 const Method* method = m();
3926
3927 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3928 oop resolved_method = ResolvedMethodTable::find_method(method);
3929 if (resolved_method != NULL) {
3930 return resolved_method;
3931 }
3932
3933 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3934 if (!k->is_initialized()) {
3935 k->initialize(CHECK_NULL);
3936 }
3937
3938 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3939
3940 NoSafepointVerifier nsv;
3941
3942 if (method->is_old()) {
3943 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3944 method->get_new_method();
3945 }
3946
3947 InstanceKlass* holder = method->method_holder();
3948
3949 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3950 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3951 // distinct loaders) to ensure the metadata is kept alive.
3952 // This mirror may be different than the one in clazz field.
3953 set_vmholder(new_resolved_method, holder->java_mirror());
3954
3955 // Set flag in class to indicate this InstanceKlass has entries in the table
3956 // to avoid walking table during redefinition if none of the redefined classes
3957 // have any membernames in the table.
3958 holder->set_has_resolved_methods();
3959
3960 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3961 }
3962
3963 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3964 assert(is_instance(lform), "wrong type");
3965 return lform->obj_field(_vmentry_offset);
3966 }
3967
3968
3969 // Support for java_lang_invoke_MethodType
3970
3971 int java_lang_invoke_MethodType::_rtype_offset;
3972 int java_lang_invoke_MethodType::_ptypes_offset;
3973
3974 #define METHODTYPE_FIELDS_DO(macro) \
3975 macro(_rtype_offset, k, "rtype", class_signature, false); \
3976 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3977
3978 void java_lang_invoke_MethodType::compute_offsets() {
3979 InstanceKlass* k = SystemDictionary::MethodType_klass();
3980 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3981 }
3982
3983 #if INCLUDE_CDS
3984 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3985 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3986 }
3987 #endif
3988
3989 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3990 st->print("(");
3991 objArrayOop pts = ptypes(mt);
3992 for (int i = 0, limit = pts->length(); i < limit; i++) {
3993 java_lang_Class::print_signature(pts->obj_at(i), st);
3994 }
3995 st->print(")");
3996 java_lang_Class::print_signature(rtype(mt), st);
3997 }
3998
3999 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4000 ResourceMark rm;
4001 stringStream buffer(128);
4002 print_signature(mt, &buffer);
4003 const char* sigstr = buffer.base();
4004 int siglen = (int) buffer.size();
4005 Symbol *name;
4006 if (!intern_if_not_found) {
4007 name = SymbolTable::probe(sigstr, siglen);
4008 } else {
4009 name = SymbolTable::new_symbol(sigstr, siglen);
4010 }
4011 return name;
4012 }
4013
4014 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4015 if (mt1 == mt2)
4016 return true;
4017 if (rtype(mt1) != rtype(mt2))
4018 return false;
4019 if (ptype_count(mt1) != ptype_count(mt2))
4020 return false;
4021 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4022 if (ptype(mt1, i) != ptype(mt2, i))
4023 return false;
4024 }
4025 return true;
4026 }
4027
4028 oop java_lang_invoke_MethodType::rtype(oop mt) {
4029 assert(is_instance(mt), "must be a MethodType");
4030 return mt->obj_field(_rtype_offset);
4031 }
4032
4033 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4034 assert(is_instance(mt), "must be a MethodType");
4035 return (objArrayOop) mt->obj_field(_ptypes_offset);
4036 }
4037
4038 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4039 return ptypes(mt)->obj_at(idx);
4040 }
4041
4042 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4043 return ptypes(mt)->length();
4044 }
4045
4046 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4047 objArrayOop pts = ptypes(mt);
4048 int count = pts->length();
4049 int slots = 0;
4050 for (int i = 0; i < count; i++) {
4051 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4052 slots += type2size[bt];
4053 }
4054 return slots;
4055 }
4056
4057 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4058 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4059 return type2size[bt];
4060 }
4061
4062
4063 // Support for java_lang_invoke_CallSite
4064
4065 int java_lang_invoke_CallSite::_target_offset;
4066 int java_lang_invoke_CallSite::_context_offset;
4067
4068 #define CALLSITE_FIELDS_DO(macro) \
4069 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4070 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4071
4072 void java_lang_invoke_CallSite::compute_offsets() {
4073 InstanceKlass* k = SystemDictionary::CallSite_klass();
4074 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4075 }
4076
4077 #if INCLUDE_CDS
4078 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4079 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4080 }
4081 #endif
4082
4083 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
4084 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4085
4086 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
4087 return dep_oop;
4088 }
4089
4090 // Support for java_lang_invoke_ConstantCallSite
4091
4092 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
4093
4094 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
4095 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
4096
4097 void java_lang_invoke_ConstantCallSite::compute_offsets() {
4098 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
4099 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4100 }
4101
4102 #if INCLUDE_CDS
4103 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
4104 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4105 }
4106 #endif
4107
4108 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4109
4110 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4111 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
4112
4113 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4114 InstanceKlass* k = SystemDictionary::Context_klass();
4115 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4116 }
4117
4118 #if INCLUDE_CDS
4119 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4120 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4121 }
4122 #endif
4123
4124 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4125 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4126 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4127 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4128 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4129 return dep_ctx;
4130 }
4131
4132 // Support for java_security_AccessControlContext
4133
4134 int java_security_AccessControlContext::_context_offset;
4135 int java_security_AccessControlContext::_privilegedContext_offset;
4136 int java_security_AccessControlContext::_isPrivileged_offset;
4137 int java_security_AccessControlContext::_isAuthorized_offset;
4138
4139 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4140 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4141 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4142 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4143 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4144
4145 void java_security_AccessControlContext::compute_offsets() {
4146 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4147 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4148 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4149 }
4150
4151 #if INCLUDE_CDS
4152 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4153 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4154 }
4155 #endif
4156
4157 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4158 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4159 assert(_isAuthorized_offset != 0, "offsets should have been initialized");
4160 // Ensure klass is initialized
4161 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4162 // Allocate result
4163 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4164 // Fill in values
4165 result->obj_field_put(_context_offset, context());
4166 result->obj_field_put(_privilegedContext_offset, privileged_context());
4167 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4168 // whitelist AccessControlContexts created by the JVM
4169 result->bool_field_put(_isAuthorized_offset, true);
4170 return result;
4171 }
4172
4173
4174 // Support for java_lang_ClassLoader
4175
4176 int java_lang_ClassLoader::_loader_data_offset;
4177 int java_lang_ClassLoader::_parallelCapable_offset;
4178 int java_lang_ClassLoader::_name_offset;
4179 int java_lang_ClassLoader::_nameAndId_offset;
4180 int java_lang_ClassLoader::_unnamedModule_offset;
4181 int java_lang_ClassLoader::_parent_offset;
4182
4183 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4184 assert(loader != NULL, "loader must not be NULL");
4185 assert(oopDesc::is_oop(loader), "loader must be oop");
4186 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4187 }
4188
4189 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4190 assert(loader != NULL, "loader must not be NULL");
4191 assert(oopDesc::is_oop(loader), "loader must be oop");
4192 return RawAccess<>::load_at(loader, _loader_data_offset);
4193 }
4194
4195 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4196 assert(loader != NULL, "loader must not be NULL");
4197 assert(oopDesc::is_oop(loader), "loader must be oop");
4198 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4199 }
4200
4201 #define CLASSLOADER_FIELDS_DO(macro) \
4202 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4203 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4204 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \
4205 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4206 macro(_parent_offset, k1, "parent", classloader_signature, false)
4207
4208 void java_lang_ClassLoader::compute_offsets() {
4209 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4210 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4211
4212 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4213 }
4214
4215 #if INCLUDE_CDS
4216 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4217 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4218 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4219 }
4220 #endif
4221
4222 oop java_lang_ClassLoader::parent(oop loader) {
4223 assert(is_instance(loader), "loader must be oop");
4224 return loader->obj_field(_parent_offset);
4225 }
4226
4227 // Returns the name field of this class loader. If the name field has not
4228 // been set, null will be returned.
4229 oop java_lang_ClassLoader::name(oop loader) {
4230 assert(is_instance(loader), "loader must be oop");
4231 return loader->obj_field(_name_offset);
4232 }
4233
4234 // Returns the nameAndId field of this class loader. The format is
4235 // as follows:
4236 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4237 // If the defining loader has no name then <qualified-class-name> @<id>
4238 // If built-in loader, then omit '@<id>' as there is only one instance.
4239 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4240 oop java_lang_ClassLoader::nameAndId(oop loader) {
4241 assert(is_instance(loader), "loader must be oop");
4242 return loader->obj_field(_nameAndId_offset);
4243 }
4244
4245 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4246 assert(is_instance(loader), "loader must be oop");
4247 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4248 oop acl = loader;
4249 debug_only(jint loop_count = 0);
4250 // This loop taken verbatim from ClassLoader.java:
4251 do {
4252 acl = parent(acl);
4253 if (cl == acl) {
4254 return true;
4255 }
4256 assert(++loop_count > 0, "loop_count overflow");
4257 } while (acl != NULL);
4258 return false;
4259 }
4260
4261 bool java_lang_ClassLoader::is_instance(oop obj) {
4262 return obj != NULL && is_subclass(obj->klass());
4263 }
4264
4265
4266 // For class loader classes, parallelCapable defined
4267 // based on non-null field
4268 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4269 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4270 assert(_parallelCapable_offset != 0, "offsets should have been initialized");
4271 return (class_loader->obj_field(_parallelCapable_offset) != NULL);
4272 }
4273
4274 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4275 // Fix for 4474172; see evaluation for more details
4276 loader = non_reflection_class_loader(loader);
4277
4278 oop cl = SystemDictionary::java_system_loader();
4279 while(cl != NULL) {
4280 if (cl == loader) return true;
4281 cl = parent(cl);
4282 }
4283 return false;
4284 }
4285
4286 // Return true if this is one of the class loaders associated with
4287 // the generated bytecodes for reflection.
4288 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4289 if (loader != NULL) {
4290 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4291 // This might be null in non-1.4 JDKs
4292 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4293 }
4294 return false;
4295 }
4296
4297 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4298 // See whether this is one of the class loaders associated with
4299 // the generated bytecodes for reflection, and if so, "magically"
4300 // delegate to its parent to prevent class loading from occurring
4301 // in places where applications using reflection didn't expect it.
4302 if (is_reflection_class_loader(loader)) {
4303 return parent(loader);
4304 }
4305 return loader;
4306 }
4307
4308 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4309 assert(is_instance(loader), "loader must be oop");
4310 return loader->obj_field(_unnamedModule_offset);
4311 }
4312
4313 // Support for java_lang_System
4314 //
4315
4316 int java_lang_System::_static_in_offset;
4317 int java_lang_System::_static_out_offset;
4318 int java_lang_System::_static_err_offset;
4319 int java_lang_System::_static_security_offset;
4320
4321 #define SYSTEM_FIELDS_DO(macro) \
4322 macro(_static_in_offset, k, "in", input_stream_signature, true); \
4323 macro(_static_out_offset, k, "out", print_stream_signature, true); \
4324 macro(_static_err_offset, k, "err", print_stream_signature, true); \
4325 macro(_static_security_offset, k, "security", security_manager_signature, true)
4326
4327 void java_lang_System::compute_offsets() {
4328 InstanceKlass* k = SystemDictionary::System_klass();
4329 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4330 }
4331
4332 #if INCLUDE_CDS
4333 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4334 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4335 }
4336 #endif
4337
4338 // Support for jdk_internal_misc_UnsafeConstants
4339 //
4340 class UnsafeConstantsFixup : public FieldClosure {
4341 private:
4342 int _address_size;
4343 int _page_size;
4344 bool _big_endian;
4345 bool _use_unaligned_access;
4346 int _data_cache_line_flush_size;
4347 public:
4348 UnsafeConstantsFixup() {
4349 // round up values for all static final fields
4350 _address_size = sizeof(void*);
4351 _page_size = os::vm_page_size();
4352 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4353 _use_unaligned_access = UseUnalignedAccesses;
4354 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4355 }
4356
4357 void do_field(fieldDescriptor* fd) {
4358 oop mirror = fd->field_holder()->java_mirror();
4359 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4360 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4361 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4362 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4363 if (fd->name() == vmSymbols::address_size_name()) {
4364 mirror->int_field_put(fd->offset(), _address_size);
4365 } else if (fd->name() == vmSymbols::page_size_name()) {
4366 mirror->int_field_put(fd->offset(), _page_size);
4367 } else if (fd->name() == vmSymbols::big_endian_name()) {
4368 mirror->bool_field_put(fd->offset(), _big_endian);
4369 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4370 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4371 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4372 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4373 } else {
4374 assert(false, "unexpected UnsafeConstants field");
4375 }
4376 }
4377 };
4378
4379 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4380 UnsafeConstantsFixup fixup;
4381 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4382 }
4383
4384
4385 // java_lang_StackTraceElement
4386
4387 int java_lang_StackTraceElement::_methodName_offset;
4388 int java_lang_StackTraceElement::_fileName_offset;
4389 int java_lang_StackTraceElement::_lineNumber_offset;
4390 int java_lang_StackTraceElement::_moduleName_offset;
4391 int java_lang_StackTraceElement::_moduleVersion_offset;
4392 int java_lang_StackTraceElement::_classLoaderName_offset;
4393 int java_lang_StackTraceElement::_declaringClass_offset;
4394 int java_lang_StackTraceElement::_declaringClassObject_offset;
4395
4396 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4397 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4398 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4399 macro(_moduleName_offset, k, "moduleName", string_signature, false); \
4400 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4401 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \
4402 macro(_methodName_offset, k, "methodName", string_signature, false); \
4403 macro(_fileName_offset, k, "fileName", string_signature, false); \
4404 macro(_lineNumber_offset, k, "lineNumber", int_signature, false)
4405
4406 // Support for java_lang_StackTraceElement
4407 void java_lang_StackTraceElement::compute_offsets() {
4408 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4409 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4410 }
4411
4412 #if INCLUDE_CDS
4413 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4414 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4415 }
4416 #endif
4417
4418 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4419 element->obj_field_put(_fileName_offset, value);
4420 }
4421
4422 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4423 element->obj_field_put(_declaringClass_offset, value);
4424 }
4425
4426 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4427 element->obj_field_put(_methodName_offset, value);
4428 }
4429
4430 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4431 element->int_field_put(_lineNumber_offset, value);
4432 }
4433
4434 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4435 element->obj_field_put(_moduleName_offset, value);
4436 }
4437
4438 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4439 element->obj_field_put(_moduleVersion_offset, value);
4440 }
4441
4442 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4443 element->obj_field_put(_classLoaderName_offset, value);
4444 }
4445
4446 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4447 element->obj_field_put(_declaringClassObject_offset, value);
4448 }
4449
4450
4451 // java_lang_AssertionStatusDirectives
4452
4453 int java_lang_AssertionStatusDirectives::_classes_offset;
4454 int java_lang_AssertionStatusDirectives::_classEnabled_offset;
4455 int java_lang_AssertionStatusDirectives::_packages_offset;
4456 int java_lang_AssertionStatusDirectives::_packageEnabled_offset;
4457 int java_lang_AssertionStatusDirectives::_deflt_offset;
4458
4459 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4460 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4461 macro(_classes_offset, k, "classes", string_array_signature, false); \
4462 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4463 macro(_packages_offset, k, "packages", string_array_signature, false); \
4464 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4465 macro(_deflt_offset, k, "deflt", bool_signature, false)
4466
4467 void java_lang_AssertionStatusDirectives::compute_offsets() {
4468 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4469 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4470 }
4471
4472 #if INCLUDE_CDS
4473 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4474 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4475 }
4476 #endif
4477
4478 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4479 o->obj_field_put(_classes_offset, val);
4480 }
4481
4482 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4483 o->obj_field_put(_classEnabled_offset, val);
4484 }
4485
4486 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4487 o->obj_field_put(_packages_offset, val);
4488 }
4489
4490 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4491 o->obj_field_put(_packageEnabled_offset, val);
4492 }
4493
4494 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4495 o->bool_field_put(_deflt_offset, val);
4496 }
4497
4498
4499 // Support for intrinsification of java.nio.Buffer.checkIndex
4500
4501 int java_nio_Buffer::_limit_offset;
4502
4503 #define BUFFER_FIELDS_DO(macro) \
4504 macro(_limit_offset, k, "limit", int_signature, false)
4505
4506 void java_nio_Buffer::compute_offsets() {
4507 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4508 assert(k != NULL, "must be loaded in 1.4+");
4509 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4510 }
4511
4512 #if INCLUDE_CDS
4513 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4514 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4515 }
4516 #endif
4517
4518 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4519
4520 #define AOS_FIELDS_DO(macro) \
4521 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4522
4523 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4524 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4525 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4526 }
4527
4528 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4529 assert(_owner_offset != 0, "Must be initialized");
4530 return obj->obj_field(_owner_offset);
4531 }
4532
4533 #if INCLUDE_CDS
4534 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4535 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4536 }
4537 #endif
4538
4539 int java_lang_Integer_IntegerCache::_static_cache_offset;
4540 int java_lang_Long_LongCache::_static_cache_offset;
4541 int java_lang_Character_CharacterCache::_static_cache_offset;
4542 int java_lang_Short_ShortCache::_static_cache_offset;
4543 int java_lang_Byte_ByteCache::_static_cache_offset;
4544
4545 #define INTEGER_CACHE_FIELDS_DO(macro) \
4546 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4547
4548 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4549 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4550 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4551 }
4552
4553 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4554 oop base = ik->static_field_base_raw();
4555 return objArrayOop(base->obj_field(_static_cache_offset));
4556 }
4557
4558 Symbol* java_lang_Integer_IntegerCache::symbol() {
4559 return vmSymbols::java_lang_Integer_IntegerCache();
4560 }
4561
4562 #if INCLUDE_CDS
4563 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4564 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4565 }
4566 #endif
4567 #undef INTEGER_CACHE_FIELDS_DO
4568
4569 jint java_lang_Integer::value(oop obj) {
4570 jvalue v;
4571 java_lang_boxing_object::get_value(obj, &v);
4572 return v.i;
4573 }
4574
4575 #define LONG_CACHE_FIELDS_DO(macro) \
4576 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4577
4578 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4579 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4580 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4581 }
4582
4583 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4584 oop base = ik->static_field_base_raw();
4585 return objArrayOop(base->obj_field(_static_cache_offset));
4586 }
4587
4588 Symbol* java_lang_Long_LongCache::symbol() {
4589 return vmSymbols::java_lang_Long_LongCache();
4590 }
4591
4592 #if INCLUDE_CDS
4593 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4594 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4595 }
4596 #endif
4597 #undef LONG_CACHE_FIELDS_DO
4598
4599 jlong java_lang_Long::value(oop obj) {
4600 jvalue v;
4601 java_lang_boxing_object::get_value(obj, &v);
4602 return v.j;
4603 }
4604
4605 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4606 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4607
4608 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4609 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4610 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4611 }
4612
4613 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4614 oop base = ik->static_field_base_raw();
4615 return objArrayOop(base->obj_field(_static_cache_offset));
4616 }
4617
4618 Symbol* java_lang_Character_CharacterCache::symbol() {
4619 return vmSymbols::java_lang_Character_CharacterCache();
4620 }
4621
4622 #if INCLUDE_CDS
4623 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4624 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4625 }
4626 #endif
4627 #undef CHARACTER_CACHE_FIELDS_DO
4628
4629 jchar java_lang_Character::value(oop obj) {
4630 jvalue v;
4631 java_lang_boxing_object::get_value(obj, &v);
4632 return v.c;
4633 }
4634
4635 #define SHORT_CACHE_FIELDS_DO(macro) \
4636 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4637
4638 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4639 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4640 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4641 }
4642
4643 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4644 oop base = ik->static_field_base_raw();
4645 return objArrayOop(base->obj_field(_static_cache_offset));
4646 }
4647
4648 Symbol* java_lang_Short_ShortCache::symbol() {
4649 return vmSymbols::java_lang_Short_ShortCache();
4650 }
4651
4652 #if INCLUDE_CDS
4653 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4654 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4655 }
4656 #endif
4657 #undef SHORT_CACHE_FIELDS_DO
4658
4659 jshort java_lang_Short::value(oop obj) {
4660 jvalue v;
4661 java_lang_boxing_object::get_value(obj, &v);
4662 return v.s;
4663 }
4664
4665 #define BYTE_CACHE_FIELDS_DO(macro) \
4666 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4667
4668 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4669 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4670 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4671 }
4672
4673 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4674 oop base = ik->static_field_base_raw();
4675 return objArrayOop(base->obj_field(_static_cache_offset));
4676 }
4677
4678 Symbol* java_lang_Byte_ByteCache::symbol() {
4679 return vmSymbols::java_lang_Byte_ByteCache();
4680 }
4681
4682 #if INCLUDE_CDS
4683 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4684 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4685 }
4686 #endif
4687 #undef BYTE_CACHE_FIELDS_DO
4688
4689 jbyte java_lang_Byte::value(oop obj) {
4690 jvalue v;
4691 java_lang_boxing_object::get_value(obj, &v);
4692 return v.b;
4693 }
4694
4695 int java_lang_Boolean::_static_TRUE_offset;
4696 int java_lang_Boolean::_static_FALSE_offset;
4697
4698 #define BOOLEAN_FIELDS_DO(macro) \
4699 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4700 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4701
4702
4703 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4704 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4705 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4706 }
4707
4708 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4709 oop base = ik->static_field_base_raw();
4710 return base->obj_field(_static_TRUE_offset);
4711 }
4712
4713 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4714 oop base = ik->static_field_base_raw();
4715 return base->obj_field(_static_FALSE_offset);
4716 }
4717
4718 Symbol* java_lang_Boolean::symbol() {
4719 return vmSymbols::java_lang_Boolean();
4720 }
4721
4722 #if INCLUDE_CDS
4723 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4724 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4725 }
4726 #endif
4727 #undef BOOLEAN_CACHE_FIELDS_DO
4728
4729 jboolean java_lang_Boolean::value(oop obj) {
4730 jvalue v;
4731 java_lang_boxing_object::get_value(obj, &v);
4732 return v.z;
4733 }
4734
4735 // java_lang_reflect_RecordComponent
4736
4737 int java_lang_reflect_RecordComponent::_clazz_offset;
4738 int java_lang_reflect_RecordComponent::_name_offset;
4739 int java_lang_reflect_RecordComponent::_type_offset;
4740 int java_lang_reflect_RecordComponent::_accessor_offset;
4741 int java_lang_reflect_RecordComponent::_signature_offset;
4742 int java_lang_reflect_RecordComponent::_annotations_offset;
4743 int java_lang_reflect_RecordComponent::_typeAnnotations_offset;
4744
4745 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4746 macro(_clazz_offset, k, "clazz", class_signature, false); \
4747 macro(_name_offset, k, "name", string_signature, false); \
4748 macro(_type_offset, k, "type", class_signature, false); \
4749 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \
4750 macro(_signature_offset, k, "signature", string_signature, false); \
4751 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \
4752 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4753
4754 // Support for java_lang_reflect_RecordComponent
4755 void java_lang_reflect_RecordComponent::compute_offsets() {
4756 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4757 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4758 }
4759
4760 #if INCLUDE_CDS
4761 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4762 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4763 }
4764 #endif
4765
4766 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4767 element->obj_field_put(_clazz_offset, value);
4768 }
4769
4770 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4771 element->obj_field_put(_name_offset, value);
4772 }
4773
4774 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4775 element->obj_field_put(_type_offset, value);
4776 }
4777
4778 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4779 element->obj_field_put(_accessor_offset, value);
4780 }
4781
4782 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4783 element->obj_field_put(_signature_offset, value);
4784 }
4785
4786 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4787 element->obj_field_put(_annotations_offset, value);
4788 }
4789
4790 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4791 element->obj_field_put(_typeAnnotations_offset, value);
4792 }
4793
4794 // java_lang_InternalError
4795 int java_lang_InternalError::_during_unsafe_access_offset;
4796
4797 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) {
4798 internal_error->bool_field_put(_during_unsafe_access_offset, true);
4799 }
4800
4801 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) {
4802 return internal_error->bool_field(_during_unsafe_access_offset);
4803 }
4804
4805 void java_lang_InternalError::compute_offsets() {
4806 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4807 }
4808
4809 #if INCLUDE_CDS
4810 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) {
4811 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4812 }
4813 #endif
4814
4815 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4816
4817 // Compute field offsets of all the classes in this file
4818 void JavaClasses::compute_offsets() {
4819 if (UseSharedSpaces) {
4820 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4821 JvmtiExport::has_early_class_hook_env()),
4822 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4823 // None of the classes used by the rest of this function can be replaced by
4824 // JVMTI ClassFileLoadHook.
4825 // We are safe to use the archived offsets, which have already been restored
4826 // by JavaClasses::serialize_offsets, without computing the offsets again.
4827 return;
4828 }
4829
4830 // We have already called the compute_offsets() of the
4831 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and
4832 // java_lang_ref_Reference) earlier inside SystemDictionary::resolve_well_known_classes()
4833 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4834 }
4835
4836 #if INCLUDE_CDS
4837 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4838
4839 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4840 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4841 }
4842 #endif
4843
4844 #if INCLUDE_CDS_JAVA_HEAP
4845 bool JavaClasses::is_supported_for_archiving(oop obj) {
4846 Klass* klass = obj->klass();
4847
4848 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4849 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4850 // regular Java code. The implementation of java.lang.invoke uses generated anonymous classes
4851 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4852 // So for now we cannot not support these classes for archiving.
4853 //
4854 // These objects typically are not referenced by static fields, but rather by resolved
4855 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4856 klass == SystemDictionary::ResolvedMethodName_klass() ||
4857 klass == SystemDictionary::MemberName_klass() ||
4858 klass == SystemDictionary::Context_klass()) {
4859 return false;
4860 }
4861
4862 return true;
4863 }
4864 #endif
4865
4866 #ifndef PRODUCT
4867
4868 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check.
4869
4870 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name,
4871 const char* field_sig) {
4872 EXCEPTION_MARK;
4873 fieldDescriptor fd;
4874 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4875 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4876 InstanceKlass* ik = InstanceKlass::cast(k);
4877 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4878 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4879 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4880 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4881 return false;
4882 }
4883 if (fd.is_static()) {
4884 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4885 return false;
4886 }
4887 if (fd.offset() == deserialized_offset ) {
4888 return true;
4889 } else {
4890 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
4891 klass_name, field_name, deserialized_offset, fd.offset());
4892 return false;
4893 }
4894 }
4895
4896 void JavaClasses::check_offsets() {
4897 bool valid = true;
4898
4899 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4900 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
4901
4902 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4903 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
4904
4905 // Boxed primitive objects (java_lang_boxing_object)
4906
4907 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4908 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4909 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4910 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4911 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4912 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4913 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4914 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4915
4916 if (!valid) vm_exit_during_initialization("Field offset verification failed");
4917 }
4918
4919 #endif // PRODUCT
4920
4921 int InjectedField::compute_offset() {
4922 InstanceKlass* ik = InstanceKlass::cast(klass());
4923 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4924 if (!may_be_java && !fs.access_flags().is_internal()) {
4925 // Only look at injected fields
4926 continue;
4927 }
4928 if (fs.name() == name() && fs.signature() == signature()) {
4929 return fs.offset();
4930 }
4931 }
4932 ResourceMark rm;
4933 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)" : "");
4934 #ifndef PRODUCT
4935 ik->print();
4936 tty->print_cr("all fields:");
4937 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4938 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4939 }
4940 #endif //PRODUCT
4941 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4942 return -1;
4943 }
4944
4945 void javaClasses_init() {
4946 JavaClasses::compute_offsets();
4947 JavaClasses::check_offsets();
4948 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4949 }