1 /*
2 * Copyright (c) 1997, 2018, 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/vmSymbols.hpp"
32 #include "code/debugInfo.hpp"
33 #include "code/dependencyContext.hpp"
34 #include "code/pcDesc.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "logging/log.hpp"
37 #include "logging/logStream.hpp"
38 #include "memory/oopFactory.hpp"
39 #include "memory/metaspaceShared.hpp"
40 #include "memory/resourceArea.hpp"
41 #include "memory/universe.hpp"
42 #include "oops/fieldStreams.hpp"
43 #include "oops/instanceKlass.hpp"
44 #include "oops/instanceMirrorKlass.hpp"
45 #include "oops/klass.hpp"
46 #include "oops/method.inline.hpp"
47 #include "oops/objArrayOop.inline.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/symbol.hpp"
50 #include "oops/typeArrayOop.inline.hpp"
51 #include "prims/resolvedMethodTable.hpp"
52 #include "runtime/fieldDescriptor.hpp"
53 #include "runtime/frame.inline.hpp"
54 #include "runtime/handles.inline.hpp"
55 #include "runtime/interfaceSupport.inline.hpp"
56 #include "runtime/java.hpp"
57 #include "runtime/javaCalls.hpp"
58 #include "runtime/jniHandles.inline.hpp"
59 #include "runtime/safepoint.hpp"
60 #include "runtime/thread.inline.hpp"
61 #include "runtime/vframe.inline.hpp"
62 #include "utilities/align.hpp"
63 #include "utilities/preserveException.hpp"
64
65 #if INCLUDE_JVMCI
66 #include "jvmci/jvmciJavaClasses.hpp"
67 #endif
68
69 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
70 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
71
72 #if INCLUDE_CDS
73 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
74 f->do_u4((u4*)&_##name##_offset);
75 #endif
76
77 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
78 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
79
80 InjectedField JavaClasses::_injected_fields[] = {
81 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
82 };
83
84 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
85 return _injected_fields[id].compute_offset();
86 }
87
88
89 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
90 *field_count = 0;
91
92 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
93 if (sid == vmSymbols::NO_SID) {
94 // Only well known classes can inject fields
95 return NULL;
96 }
97
98 int count = 0;
99 int start = -1;
100
101 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
102 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
103 count++; \
104 if (start == -1) start = klass##_##name##_enum; \
105 }
106 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
107 #undef LOOKUP_INJECTED_FIELD
108
109 if (start != -1) {
110 *field_count = count;
111 return _injected_fields + start;
112 }
113 return NULL;
114 }
115
116
117 // Helpful routine for computing field offsets at run time rather than hardcoding them
118 // Finds local fields only, including static fields. Static field offsets are from the
119 // beginning of the mirror.
120 static void compute_offset(int &dest_offset,
121 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
122 bool is_static = false) {
123 fieldDescriptor fd;
124 if (ik == NULL) {
125 ResourceMark rm;
126 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
127 vm_exit_during_initialization("Invalid layout of preloaded class");
128 }
129
130 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
131 ResourceMark rm;
132 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
133 name_symbol->as_C_string(), signature_symbol->as_C_string());
134 #ifndef PRODUCT
135 // Prints all fields and offsets
136 Log(class) lt;
137 LogStream ls(lt.error());
138 ik->print_on(&ls);
139 #endif //PRODUCT
140 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
141 }
142 dest_offset = fd.offset();
143 }
144
145 // Overloading to pass name as a string.
146 static void compute_offset(int& dest_offset, InstanceKlass* ik,
147 const char* name_string, Symbol* signature_symbol,
148 bool is_static = false) {
149 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
150 if (name == NULL) {
151 ResourceMark rm;
152 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
153 vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
154 }
155 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
156 }
157
158 // Same as above but for "optional" offsets that might not be present in certain JDK versions
159 // Old versions should be cleaned out since Hotspot only supports the current JDK, and this
160 // function should be removed.
161 static void
162 compute_optional_offset(int& dest_offset,
163 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
164 fieldDescriptor fd;
165 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
166 dest_offset = fd.offset();
167 }
168 }
169
170 int java_lang_String::value_offset = 0;
171 int java_lang_String::hash_offset = 0;
172 int java_lang_String::coder_offset = 0;
173
174 bool java_lang_String::initialized = false;
175
176 bool java_lang_String::is_instance(oop obj) {
177 return is_instance_inlined(obj);
178 }
179
180 #if INCLUDE_CDS
181 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
182 f->do_u4((u4*)&offset)
183
184 #define FIELD_SERIALIZE_OFFSET_OPTIONAL(offset, klass, name, signature) \
185 f->do_u4((u4*)&offset)
186 #endif
187
188 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
189 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
190
191 #define FIELD_COMPUTE_OFFSET_OPTIONAL(offset, klass, name, signature) \
192 compute_optional_offset(offset, klass, name, vmSymbols::signature())
193
194 #define STRING_FIELDS_DO(macro) \
195 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
196 macro(hash_offset, k, "hash", int_signature, false); \
197 macro(coder_offset, k, "coder", byte_signature, false)
198
199 void java_lang_String::compute_offsets() {
200 if (initialized) {
201 return;
202 }
203
204 InstanceKlass* k = SystemDictionary::String_klass();
205 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
206
207 initialized = true;
208 }
209
210 #if INCLUDE_CDS
211 void java_lang_String::serialize(SerializeClosure* f) {
212 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
213 f->do_u4((u4*)&initialized);
214 }
215 #endif
216
217 class CompactStringsFixup : public FieldClosure {
218 private:
219 bool _value;
220
221 public:
222 CompactStringsFixup(bool value) : _value(value) {}
223
224 void do_field(fieldDescriptor* fd) {
225 if (fd->name() == vmSymbols::compact_strings_name()) {
226 oop mirror = fd->field_holder()->java_mirror();
227 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
228 assert(mirror != NULL, "String must have mirror already");
229 mirror->bool_field_put(fd->offset(), _value);
230 }
231 }
232 };
233
234 void java_lang_String::set_compact_strings(bool value) {
235 CompactStringsFixup fix(value);
236 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
237 }
238
239 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
240 assert(initialized, "Must be initialized");
241 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
242
243 // Create the String object first, so there's a chance that the String
244 // and the char array it points to end up in the same cache line.
245 oop obj;
246 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
247
248 // Create the char array. The String object must be handlized here
249 // because GC can happen as a result of the allocation attempt.
250 Handle h_obj(THREAD, obj);
251 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
252 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
253
254 // Point the String at the char array
255 obj = h_obj();
256 set_value(obj, buffer);
257 // No need to zero the offset, allocation zero'ed the entire String object
258 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
259 return h_obj;
260 }
261
262 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
263 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
264 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
265 typeArrayOop buffer = value(h_obj());
266 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
267 if (is_latin1) {
268 for (int index = 0; index < length; index++) {
269 buffer->byte_at_put(index, (jbyte)unicode[index]);
270 }
271 } else {
272 for (int index = 0; index < length; index++) {
273 buffer->char_at_put(index, unicode[index]);
274 }
275 }
276
277 #ifdef ASSERT
278 {
279 ResourceMark rm;
280 char* expected = UNICODE::as_utf8(unicode, length);
281 char* actual = as_utf8_string(h_obj());
282 if (strcmp(expected, actual) != 0) {
283 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
284 ShouldNotReachHere();
285 }
286 }
287 #endif
288
289 return h_obj;
290 }
291
292 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
293 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
294 return h_obj();
295 }
296
297 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
298 if (utf8_str == NULL) {
299 return Handle();
300 }
301 bool has_multibyte, is_latin1;
302 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
303 if (!CompactStrings) {
304 has_multibyte = true;
305 is_latin1 = false;
306 }
307
308 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
309 if (length > 0) {
310 if (!has_multibyte) {
311 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
312 } else if (is_latin1) {
313 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
314 } else {
315 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
316 }
317 }
318
319 #ifdef ASSERT
320 // This check is too strict because the input string is not necessarily valid UTF8.
321 // For example, it may be created with arbitrary content via jni_NewStringUTF.
322 /*
323 {
324 ResourceMark rm;
325 const char* expected = utf8_str;
326 char* actual = as_utf8_string(h_obj());
327 if (strcmp(expected, actual) != 0) {
328 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
329 ShouldNotReachHere();
330 }
331 }
332 */
333 #endif
334
335 return h_obj;
336 }
337
338 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
339 Handle h_obj = create_from_str(utf8_str, CHECK_0);
340 return h_obj();
341 }
342
343 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
344 const char* utf8_str = (char*)symbol->bytes();
345 int utf8_len = symbol->utf8_length();
346
347 bool has_multibyte, is_latin1;
348 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
349 if (!CompactStrings) {
350 has_multibyte = true;
351 is_latin1 = false;
352 }
353
354 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
355 if (length > 0) {
356 if (!has_multibyte) {
357 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
358 } else if (is_latin1) {
359 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
360 } else {
361 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
362 }
363 }
364
365 #ifdef ASSERT
366 {
367 ResourceMark rm;
368 const char* expected = symbol->as_utf8();
369 char* actual = as_utf8_string(h_obj());
370 if (strncmp(expected, actual, utf8_len) != 0) {
371 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
372 ShouldNotReachHere();
373 }
374 }
375 #endif
376
377 return h_obj;
378 }
379
380 // Converts a C string to a Java String based on current encoding
381 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
382 assert(str != NULL, "bad arguments");
383
384 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
385 static to_java_string_fn_t _to_java_string_fn = NULL;
386
387 if (_to_java_string_fn == NULL) {
388 void *lib_handle = os::native_java_library();
389 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
390 if (_to_java_string_fn == NULL) {
391 fatal("NewStringPlatform missing");
392 }
393 }
394
395 jstring js = NULL;
396 { JavaThread* thread = (JavaThread*)THREAD;
397 assert(thread->is_Java_thread(), "must be java thread");
398 HandleMark hm(thread);
399 ThreadToNativeFromVM ttn(thread);
400 js = (_to_java_string_fn)(thread->jni_environment(), str);
401 }
402 return Handle(THREAD, JNIHandles::resolve(js));
403 }
404
405 // Converts a Java String to a native C string that can be used for
406 // native OS calls.
407 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
408 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
409 static to_platform_string_fn_t _to_platform_string_fn = NULL;
410
411 if (_to_platform_string_fn == NULL) {
412 void *lib_handle = os::native_java_library();
413 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
414 if (_to_platform_string_fn == NULL) {
415 fatal("GetStringPlatformChars missing");
416 }
417 }
418
419 char *native_platform_string;
420 { JavaThread* thread = (JavaThread*)THREAD;
421 assert(thread->is_Java_thread(), "must be java thread");
422 JNIEnv *env = thread->jni_environment();
423 jstring js = (jstring) JNIHandles::make_local(env, java_string());
424 bool is_copy;
425 HandleMark hm(thread);
426 ThreadToNativeFromVM ttn(thread);
427 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
428 assert(is_copy == JNI_TRUE, "is_copy value changed");
429 JNIHandles::destroy_local(js);
430 }
431 return native_platform_string;
432 }
433
434 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
435 oop obj = java_string();
436 // Typical usage is to convert all '/' to '.' in string.
437 typeArrayOop value = java_lang_String::value(obj);
438 int length = java_lang_String::length(obj);
439 bool is_latin1 = java_lang_String::is_latin1(obj);
440
441 // First check if any from_char exist
442 int index; // Declared outside, used later
443 for (index = 0; index < length; index++) {
444 jchar c = !is_latin1 ? value->char_at(index) :
445 ((jchar) value->byte_at(index)) & 0xff;
446 if (c == from_char) {
447 break;
448 }
449 }
450 if (index == length) {
451 // No from_char, so do not copy.
452 return java_string;
453 }
454
455 // Check if result string will be latin1
456 bool to_is_latin1 = false;
457
458 // Replacement char must be latin1
459 if (CompactStrings && UNICODE::is_latin1(to_char)) {
460 if (is_latin1) {
461 // Source string is latin1 as well
462 to_is_latin1 = true;
463 } else if (!UNICODE::is_latin1(from_char)) {
464 // We are replacing an UTF16 char. Scan string to
465 // check if result can be latin1 encoded.
466 to_is_latin1 = true;
467 for (index = 0; index < length; index++) {
468 jchar c = value->char_at(index);
469 if (c != from_char && !UNICODE::is_latin1(c)) {
470 to_is_latin1 = false;
471 break;
472 }
473 }
474 }
475 }
476
477 // Create new UNICODE (or byte) buffer. Must handlize value because GC
478 // may happen during String and char array creation.
479 typeArrayHandle h_value(THREAD, value);
480 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
481 typeArrayOop from_buffer = h_value();
482 typeArrayOop to_buffer = java_lang_String::value(string());
483
484 // Copy contents
485 for (index = 0; index < length; index++) {
486 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
487 ((jchar) from_buffer->byte_at(index)) & 0xff;
488 if (c == from_char) {
489 c = to_char;
490 }
491 if (!to_is_latin1) {
492 to_buffer->char_at_put(index, c);
493 } else {
494 to_buffer->byte_at_put(index, (jbyte) c);
495 }
496 }
497 return string;
498 }
499
500 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
501 typeArrayOop value = java_lang_String::value(java_string);
502 length = java_lang_String::length(java_string);
503 bool is_latin1 = java_lang_String::is_latin1(java_string);
504
505 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
506 if (result != NULL) {
507 if (!is_latin1) {
508 for (int index = 0; index < length; index++) {
509 result[index] = value->char_at(index);
510 }
511 } else {
512 for (int index = 0; index < length; index++) {
513 result[index] = ((jchar) value->byte_at(index)) & 0xff;
514 }
515 }
516 } else {
517 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
518 }
519 return result;
520 }
521
522 unsigned int java_lang_String::hash_code(oop java_string) {
523 int length = java_lang_String::length(java_string);
524 // Zero length string will hash to zero with String.hashCode() function.
525 if (length == 0) return 0;
526
527 typeArrayOop value = java_lang_String::value(java_string);
528 bool is_latin1 = java_lang_String::is_latin1(java_string);
529
530 if (is_latin1) {
531 return java_lang_String::hash_code(value->byte_at_addr(0), length);
532 } else {
533 return java_lang_String::hash_code(value->char_at_addr(0), length);
534 }
535 }
536
537 char* java_lang_String::as_quoted_ascii(oop java_string) {
538 typeArrayOop value = java_lang_String::value(java_string);
539 int length = java_lang_String::length(java_string);
540 bool is_latin1 = java_lang_String::is_latin1(java_string);
541
542 if (length == 0) return NULL;
543
544 char* result;
545 int result_length;
546 if (!is_latin1) {
547 jchar* base = value->char_at_addr(0);
548 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
549 result = NEW_RESOURCE_ARRAY(char, result_length);
550 UNICODE::as_quoted_ascii(base, length, result, result_length);
551 } else {
552 jbyte* base = value->byte_at_addr(0);
553 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
554 result = NEW_RESOURCE_ARRAY(char, result_length);
555 UNICODE::as_quoted_ascii(base, length, result, result_length);
556 }
557 assert(result_length >= length + 1, "must not be shorter");
558 assert(result_length == (int)strlen(result) + 1, "must match");
559 return result;
560 }
561
562 Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
563 typeArrayOop value = java_lang_String::value(java_string);
564 int length = java_lang_String::length(java_string);
565 bool is_latin1 = java_lang_String::is_latin1(java_string);
566 if (!is_latin1) {
567 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
568 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
569 return sym;
570 } else {
571 ResourceMark rm;
572 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
573 const char* base = UNICODE::as_utf8(position, length);
574 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
575 return sym;
576 }
577 }
578
579 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
580 typeArrayOop value = java_lang_String::value(java_string);
581 int length = java_lang_String::length(java_string);
582 bool is_latin1 = java_lang_String::is_latin1(java_string);
583 if (!is_latin1) {
584 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
585 return SymbolTable::probe_unicode(base, length);
586 } else {
587 ResourceMark rm;
588 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
589 const char* base = UNICODE::as_utf8(position, length);
590 return SymbolTable::probe(base, length);
591 }
592 }
593
594 int java_lang_String::utf8_length(oop java_string) {
595 typeArrayOop value = java_lang_String::value(java_string);
596 int length = java_lang_String::length(java_string);
597 bool is_latin1 = java_lang_String::is_latin1(java_string);
598 if (length == 0) {
599 return 0;
600 }
601 if (!is_latin1) {
602 return UNICODE::utf8_length(value->char_at_addr(0), length);
603 } else {
604 return UNICODE::utf8_length(value->byte_at_addr(0), length);
605 }
606 }
607
608 char* java_lang_String::as_utf8_string(oop java_string) {
609 typeArrayOop value = java_lang_String::value(java_string);
610 int length = java_lang_String::length(java_string);
611 bool is_latin1 = java_lang_String::is_latin1(java_string);
612 if (!is_latin1) {
613 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
614 return UNICODE::as_utf8(position, length);
615 } else {
616 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
617 return UNICODE::as_utf8(position, length);
618 }
619 }
620
621 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
622 typeArrayOop value = java_lang_String::value(java_string);
623 int length = java_lang_String::length(java_string);
624 bool is_latin1 = java_lang_String::is_latin1(java_string);
625 if (!is_latin1) {
626 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
627 return UNICODE::as_utf8(position, length, buf, buflen);
628 } else {
629 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
630 return UNICODE::as_utf8(position, length, buf, buflen);
631 }
632 }
633
634 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
635 typeArrayOop value = java_lang_String::value(java_string);
636 int length = java_lang_String::length(java_string);
637 assert(start + len <= length, "just checking");
638 bool is_latin1 = java_lang_String::is_latin1(java_string);
639 if (!is_latin1) {
640 jchar* position = value->char_at_addr(start);
641 return UNICODE::as_utf8(position, len);
642 } else {
643 jbyte* position = value->byte_at_addr(start);
644 return UNICODE::as_utf8(position, len);
645 }
646 }
647
648 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
649 typeArrayOop value = java_lang_String::value(java_string);
650 int length = java_lang_String::length(java_string);
651 assert(start + len <= length, "just checking");
652 bool is_latin1 = java_lang_String::is_latin1(java_string);
653 if (!is_latin1) {
654 jchar* position = value->char_at_addr(start);
655 return UNICODE::as_utf8(position, len, buf, buflen);
656 } else {
657 jbyte* position = value->byte_at_addr(start);
658 return UNICODE::as_utf8(position, len, buf, buflen);
659 }
660 }
661
662 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
663 assert(java_string->klass() == SystemDictionary::String_klass(),
664 "must be java_string");
665 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
666 int length = java_lang_String::length(java_string);
667 if (length != len) {
668 return false;
669 }
670 bool is_latin1 = java_lang_String::is_latin1(java_string);
671 if (!is_latin1) {
672 for (int i = 0; i < len; i++) {
673 if (value->char_at(i) != chars[i]) {
674 return false;
675 }
676 }
677 } else {
678 for (int i = 0; i < len; i++) {
679 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
680 return false;
681 }
682 }
683 }
684 return true;
685 }
686
687 bool java_lang_String::equals(oop str1, oop str2) {
688 assert(str1->klass() == SystemDictionary::String_klass(),
689 "must be java String");
690 assert(str2->klass() == SystemDictionary::String_klass(),
691 "must be java String");
692 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
693 int length1 = java_lang_String::length(str1);
694 bool is_latin1 = java_lang_String::is_latin1(str1);
695 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
696 int length2 = java_lang_String::length(str2);
697 bool is_latin2 = java_lang_String::is_latin1(str2);
698
699 if ((length1 != length2) || (is_latin1 != is_latin2)) {
700 // Strings of different size or with different
701 // coders are never equal.
702 return false;
703 }
704 int blength1 = value1->length();
705 for (int i = 0; i < blength1; i++) {
706 if (value1->byte_at(i) != value2->byte_at(i)) {
707 return false;
708 }
709 }
710 return true;
711 }
712
713 void java_lang_String::print(oop java_string, outputStream* st) {
714 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
715 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
716
717 if (value == NULL) {
718 // This can happen if, e.g., printing a String
719 // object before its initializer has been called
720 st->print("NULL");
721 return;
722 }
723
724 int length = java_lang_String::length(java_string);
725 bool is_latin1 = java_lang_String::is_latin1(java_string);
726
727 st->print("\"");
728 for (int index = 0; index < length; index++) {
729 st->print("%c", (!is_latin1) ? value->char_at(index) :
730 ((jchar) value->byte_at(index)) & 0xff );
731 }
732 st->print("\"");
733 }
734
735
736 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
737 assert(mirror.not_null() && fd->is_static(), "just checking");
738 if (fd->has_initial_value()) {
739 BasicType t = fd->field_type();
740 switch (t) {
741 case T_BYTE:
742 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
743 break;
744 case T_BOOLEAN:
745 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
746 break;
747 case T_CHAR:
748 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
749 break;
750 case T_SHORT:
751 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
752 break;
753 case T_INT:
754 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
755 break;
756 case T_FLOAT:
757 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
758 break;
759 case T_DOUBLE:
760 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
761 break;
762 case T_LONG:
763 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
764 break;
765 case T_OBJECT:
766 {
767 assert(fd->signature() == vmSymbols::string_signature(),
768 "just checking");
769 if (DumpSharedSpaces && oopDesc::is_archive_object(mirror())) {
770 // Archive the String field and update the pointer.
771 oop s = mirror()->obj_field(fd->offset());
772 oop archived_s = StringTable::create_archived_string(s, CHECK);
773 mirror()->obj_field_put(fd->offset(), archived_s);
774 } else {
775 oop string = fd->string_initial_value(CHECK);
776 mirror()->obj_field_put(fd->offset(), string);
777 }
778 }
779 break;
780 default:
781 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
782 "Illegal ConstantValue attribute in class file");
783 }
784 }
785 }
786
787
788 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
789 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
790
791 // If the offset was read from the shared archive, it was fixed up already
792 if (!k->is_shared()) {
793 if (k->is_instance_klass()) {
794 // During bootstrap, java.lang.Class wasn't loaded so static field
795 // offsets were computed without the size added it. Go back and
796 // update all the static field offsets to included the size.
797 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
798 if (fs.access_flags().is_static()) {
799 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
800 fs.set_offset(real_offset);
801 }
802 }
803 }
804 }
805
806 if (k->is_shared() && k->has_raw_archived_mirror()) {
807 if (MetaspaceShared::open_archive_heap_region_mapped()) {
808 oop m = k->archived_java_mirror();
809 assert(m != NULL, "archived mirror is NULL");
810 assert(oopDesc::is_archive_object(m), "must be archived mirror object");
811 Handle m_h(THREAD, m);
812 // restore_archived_mirror() clears the klass' _has_raw_archived_mirror flag
813 restore_archived_mirror(k, m_h, Handle(), Handle(), Handle(), CHECK);
814 return;
815 } else {
816 k->set_java_mirror_handle(NULL);
817 k->clear_has_raw_archived_mirror();
818 }
819 }
820 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
821 }
822
823 void java_lang_Class::initialize_mirror_fields(Klass* k,
824 Handle mirror,
825 Handle protection_domain,
826 TRAPS) {
827 // Allocate a simple java object for a lock.
828 // This needs to be a java object because during class initialization
829 // it can be held across a java call.
830 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
831 set_init_lock(mirror(), r);
832
833 // Set protection domain also
834 set_protection_domain(mirror(), protection_domain());
835
836 // Initialize static fields
837 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
838 }
839
840 // Set the java.lang.Module module field in the java_lang_Class mirror
841 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
842 if (module.is_null()) {
843 // During startup, the module may be NULL only if java.base has not been defined yet.
844 // Put the class on the fixup_module_list to patch later when the java.lang.Module
845 // for java.base is known.
846 assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
847
848 bool javabase_was_defined = false;
849 {
850 MutexLocker m1(Module_lock, THREAD);
851 // Keep list of classes needing java.base module fixup
852 if (!ModuleEntryTable::javabase_defined()) {
853 assert(k->java_mirror() != NULL, "Class's mirror is null");
854 k->class_loader_data()->inc_keep_alive();
855 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
856 fixup_module_field_list()->push(k);
857 } else {
858 javabase_was_defined = true;
859 }
860 }
861
862 // If java.base was already defined then patch this particular class with java.base.
863 if (javabase_was_defined) {
864 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
865 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
866 "Setting class module field, " JAVA_BASE_NAME " should be defined");
867 Handle javabase_handle(THREAD, javabase_entry->module());
868 set_module(mirror(), javabase_handle());
869 }
870 } else {
871 assert(Universe::is_module_initialized() ||
872 (ModuleEntryTable::javabase_defined() &&
873 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
874 "Incorrect java.lang.Module specification while creating mirror");
875 set_module(mirror(), module());
876 }
877 }
878
879 // Statically allocate fixup lists because they always get created.
880 void java_lang_Class::allocate_fixup_lists() {
881 GrowableArray<Klass*>* mirror_list =
882 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
883 set_fixup_mirror_list(mirror_list);
884
885 GrowableArray<Klass*>* module_list =
886 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
887 set_fixup_module_field_list(module_list);
888 }
889
890 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
891 Handle module, Handle protection_domain, TRAPS) {
892 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
893 assert(k->java_mirror() == NULL, "should only assign mirror once");
894
895 // Use this moment of initialization to cache modifier_flags also,
896 // to support Class.getModifiers(). Instance classes recalculate
897 // the cached flags after the class file is parsed, but before the
898 // class is put into the system dictionary.
899 int computed_modifiers = k->compute_modifier_flags(CHECK);
900 k->set_modifier_flags(computed_modifiers);
901 // Class_klass has to be loaded because it is used to allocate
902 // the mirror.
903 if (SystemDictionary::Class_klass_loaded()) {
904 // Allocate mirror (java.lang.Class instance)
905 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
906 Handle mirror(THREAD, mirror_oop);
907 Handle comp_mirror;
908
909 // Setup indirection from mirror->klass
910 java_lang_Class::set_klass(mirror(), k);
911
912 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
913 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
914
915 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
916
917 // It might also have a component mirror. This mirror must already exist.
918 if (k->is_array_klass()) {
919 if (k->is_typeArray_klass()) {
920 BasicType type = TypeArrayKlass::cast(k)->element_type();
921 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
922 } else {
923 assert(k->is_objArray_klass(), "Must be");
924 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
925 assert(element_klass != NULL, "Must have an element klass");
926 comp_mirror = Handle(THREAD, element_klass->java_mirror());
927 }
928 assert(comp_mirror() != NULL, "must have a mirror");
929
930 // Two-way link between the array klass and its component mirror:
931 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
932 set_component_mirror(mirror(), comp_mirror());
933 // See below for ordering dependencies between field array_klass in component mirror
934 // and java_mirror in this klass.
935 } else {
936 assert(k->is_instance_klass(), "Must be");
937
938 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
939 if (HAS_PENDING_EXCEPTION) {
940 // If any of the fields throws an exception like OOM remove the klass field
941 // from the mirror so GC doesn't follow it after the klass has been deallocated.
942 // This mirror looks like a primitive type, which logically it is because it
943 // it represents no class.
944 java_lang_Class::set_klass(mirror(), NULL);
945 return;
946 }
947 }
948
949 // set the classLoader field in the java_lang_Class instance
950 assert(class_loader() == k->class_loader(), "should be same");
951 set_class_loader(mirror(), class_loader());
952
953 // Setup indirection from klass->mirror
954 // after any exceptions can happen during allocations.
955 k->set_java_mirror(mirror);
956
957 // Set the module field in the java_lang_Class instance. This must be done
958 // after the mirror is set.
959 set_mirror_module_field(k, mirror, module, THREAD);
960
961 if (comp_mirror() != NULL) {
962 // Set after k->java_mirror() is published, because compiled code running
963 // concurrently doesn't expect a k to have a null java_mirror.
964 release_set_array_klass(comp_mirror(), k);
965 }
966 } else {
967 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
968 fixup_mirror_list()->push(k);
969 }
970 }
971
972 #if INCLUDE_CDS_JAVA_HEAP
973 // Clears mirror fields. Static final fields with initial values are reloaded
974 // from constant pool. The object identity hash is in the object header and is
975 // not affected.
976 class ResetMirrorField: public FieldClosure {
977 private:
978 Handle _m;
979
980 public:
981 ResetMirrorField(Handle mirror) : _m(mirror) {}
982
983 void do_field(fieldDescriptor* fd) {
984 assert(DumpSharedSpaces, "dump time only");
985 assert(_m.not_null(), "Mirror cannot be NULL");
986
987 if (fd->is_static() && fd->has_initial_value()) {
988 initialize_static_field(fd, _m, Thread::current());
989 return;
990 }
991
992 BasicType ft = fd->field_type();
993 switch (ft) {
994 case T_BYTE:
995 _m()->byte_field_put(fd->offset(), 0);
996 break;
997 case T_CHAR:
998 _m()->char_field_put(fd->offset(), 0);
999 break;
1000 case T_DOUBLE:
1001 _m()->double_field_put(fd->offset(), 0);
1002 break;
1003 case T_FLOAT:
1004 _m()->float_field_put(fd->offset(), 0);
1005 break;
1006 case T_INT:
1007 _m()->int_field_put(fd->offset(), 0);
1008 break;
1009 case T_LONG:
1010 _m()->long_field_put(fd->offset(), 0);
1011 break;
1012 case T_SHORT:
1013 _m()->short_field_put(fd->offset(), 0);
1014 break;
1015 case T_BOOLEAN:
1016 _m()->bool_field_put(fd->offset(), false);
1017 break;
1018 case T_ARRAY:
1019 case T_OBJECT: {
1020 // It might be useful to cache the String field, but
1021 // for now just clear out any reference field
1022 oop o = _m()->obj_field(fd->offset());
1023 _m()->obj_field_put(fd->offset(), NULL);
1024 break;
1025 }
1026 default:
1027 ShouldNotReachHere();
1028 break;
1029 }
1030 }
1031 };
1032
1033 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1034 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1035 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1036
1037 for (int t = 0; t <= T_VOID; t++) {
1038 oop m = Universe::_mirrors[t];
1039 if (m != NULL) {
1040 // Update the field at _array_klass_offset to point to the relocated array klass.
1041 oop archived_m = MetaspaceShared::archive_heap_object(m, THREAD);
1042 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1043 assert(ak != NULL || t == T_VOID, "should not be NULL");
1044 if (ak != NULL) {
1045 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1046 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1047 }
1048
1049 // Clear the fields. Just to be safe
1050 Klass *k = m->klass();
1051 Handle archived_mirror_h(THREAD, archived_m);
1052 ResetMirrorField reset(archived_mirror_h);
1053 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1054
1055 log_trace(cds, mirror)("Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1056 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1057
1058 Universe::_mirrors[t] = archived_m;
1059 }
1060 }
1061
1062 assert(Universe::_mirrors[T_INT] != NULL &&
1063 Universe::_mirrors[T_FLOAT] != NULL &&
1064 Universe::_mirrors[T_DOUBLE] != NULL &&
1065 Universe::_mirrors[T_BYTE] != NULL &&
1066 Universe::_mirrors[T_BOOLEAN] != NULL &&
1067 Universe::_mirrors[T_CHAR] != NULL &&
1068 Universe::_mirrors[T_LONG] != NULL &&
1069 Universe::_mirrors[T_SHORT] != NULL &&
1070 Universe::_mirrors[T_VOID] != NULL, "sanity");
1071
1072 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1073 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1074 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1075 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1076 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1077 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1078 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1079 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1080 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1081 }
1082
1083 //
1084 // After the mirror object is successfully archived, the archived
1085 // klass is set with _has_archived_raw_mirror flag.
1086 //
1087 // The _has_archived_raw_mirror flag is cleared at runtime when the
1088 // archived mirror is restored. If archived java heap data cannot
1089 // be used at runtime, new mirror object is created for the shared
1090 // class. The _has_archived_raw_mirror is cleared also during the process.
1091 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1092 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1093 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1094
1095 // Mirror is already archived
1096 if (k->has_raw_archived_mirror()) {
1097 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1098 return k->archived_java_mirror_raw();
1099 }
1100
1101 // No mirror
1102 oop mirror = k->java_mirror();
1103 if (mirror == NULL) {
1104 return NULL;
1105 }
1106
1107 if (k->is_instance_klass()) {
1108 InstanceKlass *ik = InstanceKlass::cast(k);
1109 assert(ik->signers() == NULL && !k->has_signer_and_not_archived(),
1110 "class with signer cannot be supported");
1111
1112 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1113 ik->is_shared_app_class())) {
1114 // Archiving mirror for classes from non-builtin loaders is not
1115 // supported. Clear the _java_mirror within the archived class.
1116 k->set_java_mirror_handle(NULL);
1117 return NULL;
1118 }
1119 }
1120
1121 // Now start archiving the mirror object
1122 oop archived_mirror = MetaspaceShared::archive_heap_object(mirror, THREAD);
1123 if (archived_mirror == NULL) {
1124 return NULL;
1125 }
1126
1127 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1128 if (archived_mirror == NULL) {
1129 return NULL;
1130 }
1131
1132 k->set_archived_java_mirror_raw(archived_mirror);
1133
1134 k->set_has_raw_archived_mirror();
1135
1136 ResourceMark rm;
1137 log_trace(cds, mirror)("Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1138 k->external_name(), p2i(mirror), p2i(archived_mirror));
1139
1140 return archived_mirror;
1141 }
1142
1143 // The process is based on create_mirror().
1144 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1145 oop archived_mirror,
1146 Thread *THREAD) {
1147 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1148 // to archived metadata and objects below.
1149 Klass *c = archived_mirror->klass();
1150 Handle archived_mirror_h(THREAD, archived_mirror);
1151 ResetMirrorField reset(archived_mirror_h);
1152 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1153
1154 if (k->is_array_klass()) {
1155 oop archived_comp_mirror;
1156 if (k->is_typeArray_klass()) {
1157 // The primitive type mirrors are already archived. Get the archived mirror.
1158 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1159 archived_comp_mirror = MetaspaceShared::find_archived_heap_object(comp_mirror);
1160 assert(archived_comp_mirror != NULL, "Must be");
1161 } else {
1162 assert(k->is_objArray_klass(), "Must be");
1163 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1164 assert(element_klass != NULL, "Must have an element klass");
1165 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1166 if (archived_comp_mirror == NULL) {
1167 return NULL;
1168 }
1169 }
1170 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1171 } else {
1172 assert(k->is_instance_klass(), "Must be");
1173
1174 // Reset local static fields in the mirror
1175 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1176
1177 java_lang_Class:set_init_lock(archived_mirror, NULL);
1178
1179 set_protection_domain(archived_mirror, NULL);
1180 }
1181
1182 // clear class loader and mirror_module_field
1183 set_class_loader(archived_mirror, NULL);
1184 set_module(archived_mirror, NULL);
1185
1186 // The archived mirror's field at _klass_offset is still pointing to the original
1187 // klass. Updated the field in the archived mirror to point to the relocated
1188 // klass in the archive.
1189 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1190 log_debug(cds, mirror)("Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1191 p2i(as_Klass(mirror)), p2i(reloc_k));
1192 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1193
1194 // The field at _array_klass_offset is pointing to the original one dimension
1195 // higher array klass if exists. Relocate the pointer.
1196 Klass *arr = array_klass_acquire(mirror);
1197 if (arr != NULL) {
1198 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1199 log_debug(cds, mirror)("Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1200 p2i(arr), p2i(reloc_arr));
1201 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1202 }
1203 return archived_mirror;
1204 }
1205
1206 // After the archived mirror object is restored, the shared klass'
1207 // _has_raw_archived_mirror flag is cleared
1208 void java_lang_Class::restore_archived_mirror(Klass *k, Handle mirror,
1209 Handle class_loader, Handle module,
1210 Handle protection_domain, TRAPS) {
1211
1212 // The java.lang.Class field offsets were archived and reloaded from archive.
1213 // No need to put classes on the fixup_mirror_list before java.lang.Class
1214 // is loaded.
1215
1216 if (!k->is_array_klass()) {
1217 // - local static final fields with initial values were initialized at dump time
1218
1219 // create the init_lock
1220 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
1221 set_init_lock(mirror(), r);
1222
1223 if (protection_domain.not_null()) {
1224 set_protection_domain(mirror(), protection_domain());
1225 }
1226 }
1227
1228 assert(class_loader() == k->class_loader(), "should be same");
1229 if (class_loader.not_null()) {
1230 set_class_loader(mirror(), class_loader());
1231 }
1232
1233 k->set_java_mirror(mirror);
1234 k->clear_has_raw_archived_mirror();
1235
1236 set_mirror_module_field(k, mirror, module, THREAD);
1237
1238 ResourceMark rm;
1239 log_trace(cds, mirror)("Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1240 }
1241 #endif // INCLUDE_CDS_JAVA_HEAP
1242
1243 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1244 assert(_module_offset != 0, "must have been computed already");
1245 java_lang_Class::set_module(k->java_mirror(), module());
1246 }
1247
1248 int java_lang_Class::oop_size(oop java_class) {
1249 assert(_oop_size_offset != 0, "must be set");
1250 int size = java_class->int_field(_oop_size_offset);
1251 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1252 return size;
1253 }
1254
1255 void java_lang_Class::set_oop_size(oop java_class, int size) {
1256 assert(_oop_size_offset != 0, "must be set");
1257 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1258 java_class->int_field_put(_oop_size_offset, size);
1259 }
1260
1261 int java_lang_Class::static_oop_field_count(oop java_class) {
1262 assert(_static_oop_field_count_offset != 0, "must be set");
1263 return java_class->int_field(_static_oop_field_count_offset);
1264 }
1265 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1266 assert(_static_oop_field_count_offset != 0, "must be set");
1267 java_class->int_field_put(_static_oop_field_count_offset, size);
1268 }
1269
1270 oop java_lang_Class::protection_domain(oop java_class) {
1271 assert(_protection_domain_offset != 0, "must be set");
1272 return java_class->obj_field(_protection_domain_offset);
1273 }
1274 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1275 assert(_protection_domain_offset != 0, "must be set");
1276 java_class->obj_field_put(_protection_domain_offset, pd);
1277 }
1278
1279 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1280 assert(_component_mirror_offset != 0, "must be set");
1281 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1282 }
1283 oop java_lang_Class::component_mirror(oop java_class) {
1284 assert(_component_mirror_offset != 0, "must be set");
1285 return java_class->obj_field(_component_mirror_offset);
1286 }
1287
1288 oop java_lang_Class::init_lock(oop java_class) {
1289 assert(_init_lock_offset != 0, "must be set");
1290 return java_class->obj_field(_init_lock_offset);
1291 }
1292 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1293 assert(_init_lock_offset != 0, "must be set");
1294 java_class->obj_field_put(_init_lock_offset, init_lock);
1295 }
1296
1297 objArrayOop java_lang_Class::signers(oop java_class) {
1298 assert(_signers_offset != 0, "must be set");
1299 return (objArrayOop)java_class->obj_field(_signers_offset);
1300 }
1301 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1302 assert(_signers_offset != 0, "must be set");
1303 java_class->obj_field_put(_signers_offset, (oop)signers);
1304 }
1305
1306
1307 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1308 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1309 if (_class_loader_offset != 0) {
1310 java_class->obj_field_put(_class_loader_offset, loader);
1311 }
1312 }
1313
1314 oop java_lang_Class::class_loader(oop java_class) {
1315 assert(_class_loader_offset != 0, "must be set");
1316 return java_class->obj_field(_class_loader_offset);
1317 }
1318
1319 oop java_lang_Class::module(oop java_class) {
1320 assert(_module_offset != 0, "must be set");
1321 return java_class->obj_field(_module_offset);
1322 }
1323
1324 void java_lang_Class::set_module(oop java_class, oop module) {
1325 assert(_module_offset != 0, "must be set");
1326 java_class->obj_field_put(_module_offset, module);
1327 }
1328
1329 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1330 // This should be improved by adding a field at the Java level or by
1331 // introducing a new VM klass (see comment in ClassFileParser)
1332 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1333 if (type != T_VOID) {
1334 Klass* aklass = Universe::typeArrayKlassObj(type);
1335 assert(aklass != NULL, "correct bootstrap");
1336 release_set_array_klass(java_class, aklass);
1337 }
1338 #ifdef ASSERT
1339 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1340 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1341 #endif
1342 return java_class;
1343 }
1344
1345
1346 Klass* java_lang_Class::as_Klass(oop java_class) {
1347 //%note memory_2
1348 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1349 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1350 assert(k == NULL || k->is_klass(), "type check");
1351 return k;
1352 }
1353
1354
1355 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1356 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1357 java_class->metadata_field_put(_klass_offset, klass);
1358 }
1359
1360
1361 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1362 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1363 Symbol* name = NULL;
1364 bool is_instance = false;
1365 if (is_primitive(java_class)) {
1366 name = vmSymbols::type_signature(primitive_type(java_class));
1367 } else {
1368 Klass* k = as_Klass(java_class);
1369 is_instance = k->is_instance_klass();
1370 name = k->name();
1371 }
1372 if (name == NULL) {
1373 st->print("<null>");
1374 return;
1375 }
1376 if (is_instance) st->print("L");
1377 st->write((char*) name->base(), (int) name->utf8_length());
1378 if (is_instance) st->print(";");
1379 }
1380
1381 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1382 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1383 Symbol* name;
1384 if (is_primitive(java_class)) {
1385 name = vmSymbols::type_signature(primitive_type(java_class));
1386 // Because this can create a new symbol, the caller has to decrement
1387 // the refcount, so make adjustment here and below for symbols returned
1388 // that are not created or incremented due to a successful lookup.
1389 name->increment_refcount();
1390 } else {
1391 Klass* k = as_Klass(java_class);
1392 if (!k->is_instance_klass()) {
1393 name = k->name();
1394 name->increment_refcount();
1395 } else {
1396 ResourceMark rm;
1397 const char* sigstr = k->signature_name();
1398 int siglen = (int) strlen(sigstr);
1399 if (!intern_if_not_found) {
1400 name = SymbolTable::probe(sigstr, siglen);
1401 } else {
1402 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1403 }
1404 }
1405 }
1406 return name;
1407 }
1408
1409 // Returns the Java name for this Java mirror (Resource allocated)
1410 // See Klass::external_name().
1411 // For primitive type Java mirrors, its type name is returned.
1412 const char* java_lang_Class::as_external_name(oop java_class) {
1413 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1414 const char* name = NULL;
1415 if (is_primitive(java_class)) {
1416 name = type2name(primitive_type(java_class));
1417 } else {
1418 name = as_Klass(java_class)->external_name();
1419 }
1420 if (name == NULL) {
1421 name = "<null>";
1422 }
1423 return name;
1424 }
1425
1426 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1427 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1428 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1429 return k;
1430 }
1431
1432
1433 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1434 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1435 java_class->release_metadata_field_put(_array_klass_offset, klass);
1436 }
1437
1438
1439 bool java_lang_Class::is_primitive(oop java_class) {
1440 // should assert:
1441 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1442 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1443
1444 #ifdef ASSERT
1445 if (is_primitive) {
1446 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1447 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1448 "Should be either the T_VOID primitive or a java primitive");
1449 }
1450 #endif
1451
1452 return is_primitive;
1453 }
1454
1455
1456 BasicType java_lang_Class::primitive_type(oop java_class) {
1457 assert(java_lang_Class::is_primitive(java_class), "just checking");
1458 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1459 BasicType type = T_VOID;
1460 if (ak != NULL) {
1461 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1462 type = ArrayKlass::cast(ak)->element_type();
1463 } else {
1464 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1465 }
1466 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1467 return type;
1468 }
1469
1470 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1471 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1472 if (is_primitive(java_class)) {
1473 if (reference_klass != NULL)
1474 (*reference_klass) = NULL;
1475 return primitive_type(java_class);
1476 } else {
1477 if (reference_klass != NULL)
1478 (*reference_klass) = as_Klass(java_class);
1479 return T_OBJECT;
1480 }
1481 }
1482
1483
1484 oop java_lang_Class::primitive_mirror(BasicType t) {
1485 oop mirror = Universe::java_mirror(t);
1486 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1487 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1488 return mirror;
1489 }
1490
1491 bool java_lang_Class::offsets_computed = false;
1492 int java_lang_Class::classRedefinedCount_offset = -1;
1493
1494 #define CLASS_FIELDS_DO(macro) \
1495 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false) ; \
1496 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1497 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1498 macro(_module_offset, k, "module", module_signature, false)
1499
1500 void java_lang_Class::compute_offsets() {
1501 if (offsets_computed) {
1502 return;
1503 }
1504
1505 offsets_computed = true;
1506
1507 InstanceKlass* k = SystemDictionary::Class_klass();
1508 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1509
1510 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1511 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1512 // GC treats them the same.
1513 _init_lock_offset = _component_mirror_offset;
1514
1515 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1516 }
1517
1518 #if INCLUDE_CDS
1519 void java_lang_Class::serialize(SerializeClosure* f) {
1520 f->do_u4((u4*)&offsets_computed);
1521 f->do_u4((u4*)&_init_lock_offset);
1522
1523 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1524
1525 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1526 }
1527 #endif
1528
1529 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1530 if (classRedefinedCount_offset == -1) {
1531 // If we don't have an offset for it then just return -1 as a marker.
1532 return -1;
1533 }
1534
1535 return the_class_mirror->int_field(classRedefinedCount_offset);
1536 }
1537
1538 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1539 if (classRedefinedCount_offset == -1) {
1540 // If we don't have an offset for it then nothing to set.
1541 return;
1542 }
1543
1544 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1545 }
1546
1547
1548 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1549 // platform thread structure, and a eetop offset which was used for thread
1550 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1551 // merged, so in the HotSpot VM we just use the eetop field for the thread
1552 // instead of the privateInfo_offset.
1553 //
1554 // Note: The stackSize field is only present starting in 1.4.
1555
1556 int java_lang_Thread::_name_offset = 0;
1557 int java_lang_Thread::_group_offset = 0;
1558 int java_lang_Thread::_contextClassLoader_offset = 0;
1559 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1560 int java_lang_Thread::_priority_offset = 0;
1561 int java_lang_Thread::_eetop_offset = 0;
1562 int java_lang_Thread::_daemon_offset = 0;
1563 int java_lang_Thread::_stillborn_offset = 0;
1564 int java_lang_Thread::_stackSize_offset = 0;
1565 int java_lang_Thread::_tid_offset = 0;
1566 int java_lang_Thread::_thread_status_offset = 0;
1567 int java_lang_Thread::_park_blocker_offset = 0;
1568 int java_lang_Thread::_park_event_offset = 0 ;
1569
1570 #define THREAD_FIELDS_DO(macro) \
1571 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1572 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1573 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1574 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1575 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1576 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1577 macro(_eetop_offset, k, "eetop", long_signature, false); \
1578 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1579 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1580 macro(_tid_offset, k, "tid", long_signature, false); \
1581 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1582 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1583 macro(_park_event_offset, k, "nativeParkEventPointer", long_signature, false)
1584
1585 void java_lang_Thread::compute_offsets() {
1586 assert(_group_offset == 0, "offsets should be initialized only once");
1587
1588 InstanceKlass* k = SystemDictionary::Thread_klass();
1589 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1590 }
1591
1592 #if INCLUDE_CDS
1593 void java_lang_Thread::serialize(SerializeClosure* f) {
1594 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1595 }
1596 #endif
1597
1598 JavaThread* java_lang_Thread::thread(oop java_thread) {
1599 return (JavaThread*)java_thread->address_field(_eetop_offset);
1600 }
1601
1602
1603 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1604 java_thread->address_field_put(_eetop_offset, (address)thread);
1605 }
1606
1607
1608 oop java_lang_Thread::name(oop java_thread) {
1609 return java_thread->obj_field(_name_offset);
1610 }
1611
1612
1613 void java_lang_Thread::set_name(oop java_thread, oop name) {
1614 java_thread->obj_field_put(_name_offset, name);
1615 }
1616
1617
1618 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1619 return (ThreadPriority)java_thread->int_field(_priority_offset);
1620 }
1621
1622
1623 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1624 java_thread->int_field_put(_priority_offset, priority);
1625 }
1626
1627
1628 oop java_lang_Thread::threadGroup(oop java_thread) {
1629 return java_thread->obj_field(_group_offset);
1630 }
1631
1632
1633 bool java_lang_Thread::is_stillborn(oop java_thread) {
1634 return java_thread->bool_field(_stillborn_offset) != 0;
1635 }
1636
1637
1638 // We never have reason to turn the stillborn bit off
1639 void java_lang_Thread::set_stillborn(oop java_thread) {
1640 java_thread->bool_field_put(_stillborn_offset, true);
1641 }
1642
1643
1644 bool java_lang_Thread::is_alive(oop java_thread) {
1645 JavaThread* thr = java_lang_Thread::thread(java_thread);
1646 return (thr != NULL);
1647 }
1648
1649
1650 bool java_lang_Thread::is_daemon(oop java_thread) {
1651 return java_thread->bool_field(_daemon_offset) != 0;
1652 }
1653
1654
1655 void java_lang_Thread::set_daemon(oop java_thread) {
1656 java_thread->bool_field_put(_daemon_offset, true);
1657 }
1658
1659 oop java_lang_Thread::context_class_loader(oop java_thread) {
1660 return java_thread->obj_field(_contextClassLoader_offset);
1661 }
1662
1663 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1664 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1665 }
1666
1667
1668 jlong java_lang_Thread::stackSize(oop java_thread) {
1669 if (_stackSize_offset > 0) {
1670 return java_thread->long_field(_stackSize_offset);
1671 } else {
1672 return 0;
1673 }
1674 }
1675
1676 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1677 void java_lang_Thread::set_thread_status(oop java_thread,
1678 java_lang_Thread::ThreadStatus status) {
1679 // The threadStatus is only present starting in 1.5
1680 if (_thread_status_offset > 0) {
1681 java_thread->int_field_put(_thread_status_offset, status);
1682 }
1683 }
1684
1685 // Read thread status value from threadStatus field in java.lang.Thread java class.
1686 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1687 // Make sure the caller is operating on behalf of the VM or is
1688 // running VM code (state == _thread_in_vm).
1689 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1690 JavaThread::current()->thread_state() == _thread_in_vm,
1691 "Java Thread is not running in vm");
1692 // The threadStatus is only present starting in 1.5
1693 if (_thread_status_offset > 0) {
1694 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1695 } else {
1696 // All we can easily figure out is if it is alive, but that is
1697 // enough info for a valid unknown status.
1698 // These aren't restricted to valid set ThreadStatus values, so
1699 // use JVMTI values and cast.
1700 JavaThread* thr = java_lang_Thread::thread(java_thread);
1701 if (thr == NULL) {
1702 // the thread hasn't run yet or is in the process of exiting
1703 return NEW;
1704 }
1705 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1706 }
1707 }
1708
1709
1710 jlong java_lang_Thread::thread_id(oop java_thread) {
1711 // The thread ID field is only present starting in 1.5
1712 if (_tid_offset > 0) {
1713 return java_thread->long_field(_tid_offset);
1714 } else {
1715 return 0;
1716 }
1717 }
1718
1719 oop java_lang_Thread::park_blocker(oop java_thread) {
1720 assert(JDK_Version::current().supports_thread_park_blocker() &&
1721 _park_blocker_offset != 0, "Must support parkBlocker field");
1722
1723 if (_park_blocker_offset > 0) {
1724 return java_thread->obj_field(_park_blocker_offset);
1725 }
1726
1727 return NULL;
1728 }
1729
1730 jlong java_lang_Thread::park_event(oop java_thread) {
1731 if (_park_event_offset > 0) {
1732 return java_thread->long_field(_park_event_offset);
1733 }
1734 return 0;
1735 }
1736
1737 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1738 if (_park_event_offset > 0) {
1739 java_thread->long_field_put(_park_event_offset, ptr);
1740 return true;
1741 }
1742 return false;
1743 }
1744
1745
1746 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1747 assert(_thread_status_offset != 0, "Must have thread status");
1748 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1749 switch (status) {
1750 case NEW : return "NEW";
1751 case RUNNABLE : return "RUNNABLE";
1752 case SLEEPING : return "TIMED_WAITING (sleeping)";
1753 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1754 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1755 case PARKED : return "WAITING (parking)";
1756 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1757 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1758 case TERMINATED : return "TERMINATED";
1759 default : return "UNKNOWN";
1760 };
1761 }
1762 int java_lang_ThreadGroup::_parent_offset = 0;
1763 int java_lang_ThreadGroup::_name_offset = 0;
1764 int java_lang_ThreadGroup::_threads_offset = 0;
1765 int java_lang_ThreadGroup::_groups_offset = 0;
1766 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1767 int java_lang_ThreadGroup::_destroyed_offset = 0;
1768 int java_lang_ThreadGroup::_daemon_offset = 0;
1769 int java_lang_ThreadGroup::_nthreads_offset = 0;
1770 int java_lang_ThreadGroup::_ngroups_offset = 0;
1771
1772 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1773 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1774 return java_thread_group->obj_field(_parent_offset);
1775 }
1776
1777 // ("name as oop" accessor is not necessary)
1778
1779 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1780 oop name = java_thread_group->obj_field(_name_offset);
1781 // ThreadGroup.name can be null
1782 if (name != NULL) {
1783 return java_lang_String::as_utf8_string(name);
1784 }
1785 return NULL;
1786 }
1787
1788 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1789 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1790 return java_thread_group->int_field(_nthreads_offset);
1791 }
1792
1793 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1794 oop threads = java_thread_group->obj_field(_threads_offset);
1795 assert(threads != NULL, "threadgroups should have threads");
1796 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1797 return objArrayOop(threads);
1798 }
1799
1800 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1801 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1802 return java_thread_group->int_field(_ngroups_offset);
1803 }
1804
1805 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1806 oop groups = java_thread_group->obj_field(_groups_offset);
1807 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1808 return objArrayOop(groups);
1809 }
1810
1811 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1812 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1813 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1814 }
1815
1816 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1817 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1818 return java_thread_group->bool_field(_destroyed_offset) != 0;
1819 }
1820
1821 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1822 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1823 return java_thread_group->bool_field(_daemon_offset) != 0;
1824 }
1825
1826 #define THREADGROUP_FIELDS_DO(macro) \
1827 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1828 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1829 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1830 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1831 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1832 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1833 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1834 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1835 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1836
1837 void java_lang_ThreadGroup::compute_offsets() {
1838 assert(_parent_offset == 0, "offsets should be initialized only once");
1839
1840 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1841 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1842 }
1843
1844 #if INCLUDE_CDS
1845 void java_lang_ThreadGroup::serialize(SerializeClosure* f) {
1846 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1847 }
1848 #endif
1849
1850 #define THROWABLE_FIELDS_DO(macro) \
1851 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1852 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1853 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1854 macro(depth_offset, k, "depth", int_signature, false); \
1855 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1856
1857 void java_lang_Throwable::compute_offsets() {
1858 InstanceKlass* k = SystemDictionary::Throwable_klass();
1859 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1860 }
1861
1862 #if INCLUDE_CDS
1863 void java_lang_Throwable::serialize(SerializeClosure* f) {
1864 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1865 }
1866 #endif
1867
1868 oop java_lang_Throwable::unassigned_stacktrace() {
1869 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1870 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1871 if (UseCompressedOops) {
1872 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1873 } else {
1874 return oopDesc::load_decode_heap_oop((oop*)addr);
1875 }
1876 }
1877
1878 oop java_lang_Throwable::backtrace(oop throwable) {
1879 return throwable->obj_field_acquire(backtrace_offset);
1880 }
1881
1882
1883 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1884 throwable->release_obj_field_put(backtrace_offset, value);
1885 }
1886
1887 int java_lang_Throwable::depth(oop throwable) {
1888 return throwable->int_field(depth_offset);
1889 }
1890
1891 void java_lang_Throwable::set_depth(oop throwable, int value) {
1892 throwable->int_field_put(depth_offset, value);
1893 }
1894
1895 oop java_lang_Throwable::message(oop throwable) {
1896 return throwable->obj_field(detailMessage_offset);
1897 }
1898
1899
1900 // Return Symbol for detailed_message or NULL
1901 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1902 PRESERVE_EXCEPTION_MARK; // Keep original exception
1903 oop detailed_message = java_lang_Throwable::message(throwable);
1904 if (detailed_message != NULL) {
1905 return java_lang_String::as_symbol(detailed_message, THREAD);
1906 }
1907 return NULL;
1908 }
1909
1910 void java_lang_Throwable::set_message(oop throwable, oop value) {
1911 throwable->obj_field_put(detailMessage_offset, value);
1912 }
1913
1914
1915 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1916 throwable->obj_field_put(stackTrace_offset, st_element_array);
1917 }
1918
1919 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1920 set_stacktrace(throwable, NULL);
1921 }
1922
1923
1924 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1925 ResourceMark rm;
1926 Klass* k = throwable->klass();
1927 assert(k != NULL, "just checking");
1928 st->print("%s", k->external_name());
1929 oop msg = message(throwable);
1930 if (msg != NULL) {
1931 st->print(": %s", java_lang_String::as_utf8_string(msg));
1932 }
1933 }
1934
1935 // After this many redefines, the stack trace is unreliable.
1936 const int MAX_VERSION = USHRT_MAX;
1937
1938 static inline bool version_matches(Method* method, int version) {
1939 assert(version < MAX_VERSION, "version is too big");
1940 return method != NULL && (method->constants()->version() == version);
1941 }
1942
1943
1944 // This class provides a simple wrapper over the internal structure of
1945 // exception backtrace to insulate users of the backtrace from needing
1946 // to know what it looks like.
1947 class BacktraceBuilder: public StackObj {
1948 friend class BacktraceIterator;
1949 private:
1950 Handle _backtrace;
1951 objArrayOop _head;
1952 typeArrayOop _methods;
1953 typeArrayOop _bcis;
1954 objArrayOop _mirrors;
1955 typeArrayOop _names; // needed to insulate method name against redefinition
1956 int _index;
1957 NoSafepointVerifier _nsv;
1958
1959 enum {
1960 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1961 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1962 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1963 trace_names_offset = java_lang_Throwable::trace_names_offset,
1964 trace_next_offset = java_lang_Throwable::trace_next_offset,
1965 trace_size = java_lang_Throwable::trace_size,
1966 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1967 };
1968
1969 // get info out of chunks
1970 static typeArrayOop get_methods(objArrayHandle chunk) {
1971 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1972 assert(methods != NULL, "method array should be initialized in backtrace");
1973 return methods;
1974 }
1975 static typeArrayOop get_bcis(objArrayHandle chunk) {
1976 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1977 assert(bcis != NULL, "bci array should be initialized in backtrace");
1978 return bcis;
1979 }
1980 static objArrayOop get_mirrors(objArrayHandle chunk) {
1981 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1982 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1983 return mirrors;
1984 }
1985 static typeArrayOop get_names(objArrayHandle chunk) {
1986 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1987 assert(names != NULL, "names array should be initialized in backtrace");
1988 return names;
1989 }
1990
1991 public:
1992
1993 // constructor for new backtrace
1994 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
1995 expand(CHECK);
1996 _backtrace = Handle(THREAD, _head);
1997 _index = 0;
1998 }
1999
2000 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2001 _methods = get_methods(backtrace);
2002 _bcis = get_bcis(backtrace);
2003 _mirrors = get_mirrors(backtrace);
2004 _names = get_names(backtrace);
2005 assert(_methods->length() == _bcis->length() &&
2006 _methods->length() == _mirrors->length() &&
2007 _mirrors->length() == _names->length(),
2008 "method and source information arrays should match");
2009
2010 // head is the preallocated backtrace
2011 _head = backtrace();
2012 _backtrace = Handle(thread, _head);
2013 _index = 0;
2014 }
2015
2016 void expand(TRAPS) {
2017 objArrayHandle old_head(THREAD, _head);
2018 PauseNoSafepointVerifier pnsv(&_nsv);
2019
2020 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2021 objArrayHandle new_head(THREAD, head);
2022
2023 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2024 typeArrayHandle new_methods(THREAD, methods);
2025
2026 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2027 typeArrayHandle new_bcis(THREAD, bcis);
2028
2029 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2030 objArrayHandle new_mirrors(THREAD, mirrors);
2031
2032 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2033 typeArrayHandle new_names(THREAD, names);
2034
2035 if (!old_head.is_null()) {
2036 old_head->obj_at_put(trace_next_offset, new_head());
2037 }
2038 new_head->obj_at_put(trace_methods_offset, new_methods());
2039 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2040 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2041 new_head->obj_at_put(trace_names_offset, new_names());
2042
2043 _head = new_head();
2044 _methods = new_methods();
2045 _bcis = new_bcis();
2046 _mirrors = new_mirrors();
2047 _names = new_names();
2048 _index = 0;
2049 }
2050
2051 oop backtrace() {
2052 return _backtrace();
2053 }
2054
2055 inline void push(Method* method, int bci, TRAPS) {
2056 // Smear the -1 bci to 0 since the array only holds unsigned
2057 // shorts. The later line number lookup would just smear the -1
2058 // to a 0 even if it could be recorded.
2059 if (bci == SynchronizationEntryBCI) bci = 0;
2060
2061 if (_index >= trace_chunk_size) {
2062 methodHandle mhandle(THREAD, method);
2063 expand(CHECK);
2064 method = mhandle();
2065 }
2066
2067 _methods->ushort_at_put(_index, method->orig_method_idnum());
2068 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2069
2070 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2071 // klass owning the symbols alive so their refcounts aren't decremented.
2072 Symbol* name = method->name();
2073 _names->symbol_at_put(_index, name);
2074
2075 // We need to save the mirrors in the backtrace to keep the class
2076 // from being unloaded while we still have this stack trace.
2077 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2078 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2079 _index++;
2080 }
2081
2082 };
2083
2084 struct BacktraceElement : public StackObj {
2085 int _method_id;
2086 int _bci;
2087 int _version;
2088 Symbol* _name;
2089 Handle _mirror;
2090 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2091 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _name(name) {}
2092 };
2093
2094 class BacktraceIterator : public StackObj {
2095 int _index;
2096 objArrayHandle _result;
2097 objArrayHandle _mirrors;
2098 typeArrayHandle _methods;
2099 typeArrayHandle _bcis;
2100 typeArrayHandle _names;
2101
2102 void init(objArrayHandle result, Thread* thread) {
2103 // Get method id, bci, version and mirror from chunk
2104 _result = result;
2105 if (_result.not_null()) {
2106 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2107 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2108 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2109 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2110 _index = 0;
2111 }
2112 }
2113 public:
2114 BacktraceIterator(objArrayHandle result, Thread* thread) {
2115 init(result, thread);
2116 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2117 }
2118
2119 BacktraceElement next(Thread* thread) {
2120 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2121 _methods->ushort_at(_index),
2122 Backtrace::version_at(_bcis->int_at(_index)),
2123 Backtrace::bci_at(_bcis->int_at(_index)),
2124 _names->symbol_at(_index));
2125 _index++;
2126
2127 if (_index >= java_lang_Throwable::trace_chunk_size) {
2128 int next_offset = java_lang_Throwable::trace_next_offset;
2129 // Get next chunk
2130 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2131 init(result, thread);
2132 }
2133 return e;
2134 }
2135
2136 bool repeat() {
2137 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2138 }
2139 };
2140
2141
2142 // Print stack trace element to resource allocated buffer
2143 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2144 int version, int bci, Symbol* name) {
2145 ResourceMark rm;
2146
2147 // Get strings and string lengths
2148 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2149 const char* klass_name = holder->external_name();
2150 int buf_len = (int)strlen(klass_name);
2151
2152 char* method_name = name->as_C_string();
2153 buf_len += (int)strlen(method_name);
2154
2155 char* source_file_name = NULL;
2156 Symbol* source = Backtrace::get_source_file_name(holder, version);
2157 if (source != NULL) {
2158 source_file_name = source->as_C_string();
2159 buf_len += (int)strlen(source_file_name);
2160 }
2161
2162 char *module_name = NULL, *module_version = NULL;
2163 ModuleEntry* module = holder->module();
2164 if (module->is_named()) {
2165 module_name = module->name()->as_C_string();
2166 buf_len += (int)strlen(module_name);
2167 if (module->version() != NULL) {
2168 module_version = module->version()->as_C_string();
2169 buf_len += (int)strlen(module_version);
2170 }
2171 }
2172
2173 // Allocate temporary buffer with extra space for formatting and line number
2174 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2175
2176 // Print stack trace line in buffer
2177 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2178
2179 // Print module information
2180 if (module_name != NULL) {
2181 if (module_version != NULL) {
2182 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2183 } else {
2184 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2185 }
2186 }
2187
2188 // The method can be NULL if the requested class version is gone
2189 Method* method = holder->method_with_orig_idnum(method_id, version);
2190 if (!version_matches(method, version)) {
2191 strcat(buf, "Redefined)");
2192 } else {
2193 int line_number = Backtrace::get_line_number(method, bci);
2194 if (line_number == -2) {
2195 strcat(buf, "Native Method)");
2196 } else {
2197 if (source_file_name != NULL && (line_number != -1)) {
2198 // Sourcename and linenumber
2199 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2200 } else if (source_file_name != NULL) {
2201 // Just sourcename
2202 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2203 } else {
2204 // Neither sourcename nor linenumber
2205 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2206 }
2207 CompiledMethod* nm = method->code();
2208 if (WizardMode && nm != NULL) {
2209 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2210 }
2211 }
2212 }
2213
2214 st->print_cr("%s", buf);
2215 }
2216
2217 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2218 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2219 int method_id = method->orig_method_idnum();
2220 int version = method->constants()->version();
2221 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2222 }
2223
2224 /**
2225 * Print the throwable message and its stack trace plus all causes by walking the
2226 * cause chain. The output looks the same as of Throwable.printStackTrace().
2227 */
2228 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2229 // First, print the message.
2230 print(throwable(), st);
2231 st->cr();
2232
2233 // Now print the stack trace.
2234 Thread* THREAD = Thread::current();
2235 while (throwable.not_null()) {
2236 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2237 if (result.is_null()) {
2238 st->print_raw_cr("\t<<no stack trace available>>");
2239 return;
2240 }
2241 BacktraceIterator iter(result, THREAD);
2242
2243 while (iter.repeat()) {
2244 BacktraceElement bte = iter.next(THREAD);
2245 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2246 }
2247 {
2248 // Call getCause() which doesn't necessarily return the _cause field.
2249 EXCEPTION_MARK;
2250 JavaValue cause(T_OBJECT);
2251 JavaCalls::call_virtual(&cause,
2252 throwable,
2253 throwable->klass(),
2254 vmSymbols::getCause_name(),
2255 vmSymbols::void_throwable_signature(),
2256 THREAD);
2257 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2258 if (HAS_PENDING_EXCEPTION) {
2259 CLEAR_PENDING_EXCEPTION;
2260 throwable = Handle();
2261 } else {
2262 throwable = Handle(THREAD, (oop) cause.get_jobject());
2263 if (throwable.not_null()) {
2264 st->print("Caused by: ");
2265 print(throwable(), st);
2266 st->cr();
2267 }
2268 }
2269 }
2270 }
2271 }
2272
2273 /**
2274 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2275 */
2276 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2277 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2278 JavaValue result(T_VOID);
2279 JavaCalls::call_virtual(&result,
2280 throwable,
2281 SystemDictionary::Throwable_klass(),
2282 vmSymbols::printStackTrace_name(),
2283 vmSymbols::void_method_signature(),
2284 THREAD);
2285 }
2286
2287 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2288 if (!StackTraceInThrowable) return;
2289 ResourceMark rm(THREAD);
2290
2291 // Start out by clearing the backtrace for this object, in case the VM
2292 // runs out of memory while allocating the stack trace
2293 set_backtrace(throwable(), NULL);
2294 // Clear lazily constructed Java level stacktrace if refilling occurs
2295 // This is unnecessary in 1.7+ but harmless
2296 clear_stacktrace(throwable());
2297
2298 int max_depth = MaxJavaStackTraceDepth;
2299 JavaThread* thread = (JavaThread*)THREAD;
2300
2301 BacktraceBuilder bt(CHECK);
2302
2303 // If there is no Java frame just return the method that was being called
2304 // with bci 0
2305 if (!thread->has_last_Java_frame()) {
2306 if (max_depth >= 1 && method() != NULL) {
2307 bt.push(method(), 0, CHECK);
2308 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2309 set_depth(throwable(), 1);
2310 set_backtrace(throwable(), bt.backtrace());
2311 }
2312 return;
2313 }
2314
2315 // Instead of using vframe directly, this version of fill_in_stack_trace
2316 // basically handles everything by hand. This significantly improved the
2317 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2318 // See bug 6333838 for more details.
2319 // The "ASSERT" here is to verify this method generates the exactly same stack
2320 // trace as utilizing vframe.
2321 #ifdef ASSERT
2322 vframeStream st(thread);
2323 methodHandle st_method(THREAD, st.method());
2324 #endif
2325 int total_count = 0;
2326 RegisterMap map(thread, false);
2327 int decode_offset = 0;
2328 CompiledMethod* nm = NULL;
2329 bool skip_fillInStackTrace_check = false;
2330 bool skip_throwableInit_check = false;
2331 bool skip_hidden = !ShowHiddenFrames;
2332
2333 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2334 Method* method = NULL;
2335 int bci = 0;
2336
2337 // Compiled java method case.
2338 if (decode_offset != 0) {
2339 DebugInfoReadStream stream(nm, decode_offset);
2340 decode_offset = stream.read_int();
2341 method = (Method*)nm->metadata_at(stream.read_int());
2342 bci = stream.read_bci();
2343 } else {
2344 if (fr.is_first_frame()) break;
2345 address pc = fr.pc();
2346 if (fr.is_interpreted_frame()) {
2347 address bcp = fr.interpreter_frame_bcp();
2348 method = fr.interpreter_frame_method();
2349 bci = method->bci_from(bcp);
2350 fr = fr.sender(&map);
2351 } else {
2352 CodeBlob* cb = fr.cb();
2353 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2354 // but non nmethod
2355 fr = fr.sender(&map);
2356 if (cb == NULL || !cb->is_compiled()) {
2357 continue;
2358 }
2359 nm = cb->as_compiled_method();
2360 if (nm->method()->is_native()) {
2361 method = nm->method();
2362 bci = 0;
2363 } else {
2364 PcDesc* pd = nm->pc_desc_at(pc);
2365 decode_offset = pd->scope_decode_offset();
2366 // if decode_offset is not equal to 0, it will execute the
2367 // "compiled java method case" at the beginning of the loop.
2368 continue;
2369 }
2370 }
2371 }
2372 #ifdef ASSERT
2373 assert(st_method() == method && st.bci() == bci,
2374 "Wrong stack trace");
2375 st.next();
2376 // vframeStream::method isn't GC-safe so store off a copy
2377 // of the Method* in case we GC.
2378 if (!st.at_end()) {
2379 st_method = st.method();
2380 }
2381 #endif
2382
2383 // the format of the stacktrace will be:
2384 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2385 // - 0 or more <init> methods for the exception class (skipped)
2386 // - rest of the stack
2387
2388 if (!skip_fillInStackTrace_check) {
2389 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2390 throwable->is_a(method->method_holder())) {
2391 continue;
2392 }
2393 else {
2394 skip_fillInStackTrace_check = true; // gone past them all
2395 }
2396 }
2397 if (!skip_throwableInit_check) {
2398 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2399
2400 // skip <init> methods of the exception class and superclasses
2401 // This is simlar to classic VM.
2402 if (method->name() == vmSymbols::object_initializer_name() &&
2403 throwable->is_a(method->method_holder())) {
2404 continue;
2405 } else {
2406 // there are none or we've seen them all - either way stop checking
2407 skip_throwableInit_check = true;
2408 }
2409 }
2410 if (method->is_hidden()) {
2411 if (skip_hidden) continue;
2412 }
2413 bt.push(method, bci, CHECK);
2414 total_count++;
2415 }
2416
2417 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2418
2419 // Put completed stack trace into throwable object
2420 set_backtrace(throwable(), bt.backtrace());
2421 set_depth(throwable(), total_count);
2422 }
2423
2424 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2425 // No-op if stack trace is disabled
2426 if (!StackTraceInThrowable) {
2427 return;
2428 }
2429
2430 // Disable stack traces for some preallocated out of memory errors
2431 if (!Universe::should_fill_in_stack_trace(throwable)) {
2432 return;
2433 }
2434
2435 PRESERVE_EXCEPTION_MARK;
2436
2437 JavaThread* thread = JavaThread::active();
2438 fill_in_stack_trace(throwable, method, thread);
2439 // ignore exceptions thrown during stack trace filling
2440 CLEAR_PENDING_EXCEPTION;
2441 }
2442
2443 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2444 // Allocate stack trace - backtrace is created but not filled in
2445
2446 // No-op if stack trace is disabled
2447 if (!StackTraceInThrowable) return;
2448 BacktraceBuilder bt(CHECK); // creates a backtrace
2449 set_backtrace(throwable(), bt.backtrace());
2450 }
2451
2452
2453 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2454 // Fill in stack trace into preallocated backtrace (no GC)
2455
2456 // No-op if stack trace is disabled
2457 if (!StackTraceInThrowable) return;
2458
2459 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2460
2461 JavaThread* THREAD = JavaThread::current();
2462
2463 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2464 assert(backtrace.not_null(), "backtrace should have been preallocated");
2465
2466 ResourceMark rm(THREAD);
2467 vframeStream st(THREAD);
2468
2469 BacktraceBuilder bt(THREAD, backtrace);
2470
2471 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2472 // methods as preallocated errors aren't created by "java" code.
2473
2474 // fill in as much stack trace as possible
2475 int chunk_count = 0;
2476 for (;!st.at_end(); st.next()) {
2477 bt.push(st.method(), st.bci(), CHECK);
2478 chunk_count++;
2479
2480 // Bail-out for deep stacks
2481 if (chunk_count >= trace_chunk_size) break;
2482 }
2483 set_depth(throwable(), chunk_count);
2484 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2485
2486 // We support the Throwable immutability protocol defined for Java 7.
2487 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2488 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2489 }
2490
2491 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2492 objArrayHandle stack_trace_array_h, TRAPS) {
2493
2494 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2495 THROW(vmSymbols::java_lang_NullPointerException());
2496 }
2497
2498 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2499
2500 if (stack_trace_array_h->length() != depth(throwable())) {
2501 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2502 }
2503
2504 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2505 BacktraceIterator iter(result, THREAD);
2506
2507 int index = 0;
2508 while (iter.repeat()) {
2509 BacktraceElement bte = iter.next(THREAD);
2510
2511 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2512
2513 if (stack_trace_element.is_null()) {
2514 THROW(vmSymbols::java_lang_NullPointerException());
2515 }
2516
2517 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2518 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2519
2520 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2521 method,
2522 bte._version,
2523 bte._bci,
2524 bte._name, CHECK);
2525 }
2526 }
2527
2528 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2529 // Allocate java.lang.StackTraceElement instance
2530 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2531 assert(k != NULL, "must be loaded in 1.4+");
2532 if (k->should_be_initialized()) {
2533 k->initialize(CHECK_0);
2534 }
2535
2536 Handle element = k->allocate_instance_handle(CHECK_0);
2537
2538 int version = method->constants()->version();
2539 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2540 return element();
2541 }
2542
2543 void java_lang_StackTraceElement::fill_in(Handle element,
2544 InstanceKlass* holder, const methodHandle& method,
2545 int version, int bci, Symbol* name, TRAPS) {
2546 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2547
2548 // Fill in class name
2549 ResourceMark rm(THREAD);
2550 const char* str = holder->external_name();
2551 oop classname = StringTable::intern((char*) str, CHECK);
2552 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2553 java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2554
2555 oop loader = holder->class_loader();
2556 if (loader != NULL) {
2557 oop loader_name = java_lang_ClassLoader::name(loader);
2558 if (loader_name != NULL)
2559 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2560 }
2561
2562 // Fill in method name
2563 oop methodname = StringTable::intern(name, CHECK);
2564 java_lang_StackTraceElement::set_methodName(element(), methodname);
2565
2566 // Fill in module name and version
2567 ModuleEntry* module = holder->module();
2568 if (module->is_named()) {
2569 oop module_name = StringTable::intern(module->name(), CHECK);
2570 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2571 oop module_version;
2572 if (module->version() != NULL) {
2573 module_version = StringTable::intern(module->version(), CHECK);
2574 } else {
2575 module_version = NULL;
2576 }
2577 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2578 }
2579
2580 if (method() == NULL || !version_matches(method(), version)) {
2581 // The method was redefined, accurate line number information isn't available
2582 java_lang_StackTraceElement::set_fileName(element(), NULL);
2583 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2584 } else {
2585 // Fill in source file name and line number.
2586 Symbol* source = Backtrace::get_source_file_name(holder, version);
2587 if (ShowHiddenFrames && source == NULL)
2588 source = vmSymbols::unknown_class_name();
2589 oop filename = StringTable::intern(source, CHECK);
2590 java_lang_StackTraceElement::set_fileName(element(), filename);
2591
2592 int line_number = Backtrace::get_line_number(method, bci);
2593 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2594 }
2595 }
2596
2597 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2598 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2599 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2600 // we should expand MemberName::name when Throwable uses StackTrace
2601 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2602 return method;
2603 }
2604
2605 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2606 // set Method* or mid/cpref
2607 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2608 InstanceKlass* ik = method->method_holder();
2609 CallInfo info(method(), ik, CHECK);
2610 MethodHandles::init_method_MemberName(mname, info);
2611 // set bci
2612 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2613 // method may be redefined; store the version
2614 int version = method->constants()->version();
2615 assert((jushort)version == version, "version should be short");
2616 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2617 }
2618
2619 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2620 ResourceMark rm(THREAD);
2621 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2622 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2623 InstanceKlass* holder = InstanceKlass::cast(clazz);
2624 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2625
2626 short version = stackFrame->short_field(_version_offset);
2627 short bci = stackFrame->short_field(_bci_offset);
2628 Symbol* name = method->name();
2629 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2630 }
2631
2632 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2633 macro(_memberName_offset, k, "memberName", object_signature, false); \
2634 macro(_bci_offset, k, "bci", short_signature, false)
2635
2636 void java_lang_StackFrameInfo::compute_offsets() {
2637 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2638 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2639 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2640 }
2641
2642 #if INCLUDE_CDS
2643 void java_lang_StackFrameInfo::serialize(SerializeClosure* f) {
2644 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2645 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2646 }
2647 #endif
2648
2649 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2650 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2651 macro(_locals_offset, k, "locals", object_array_signature, false); \
2652 macro(_operands_offset, k, "operands", object_array_signature, false); \
2653 macro(_mode_offset, k, "mode", int_signature, false)
2654
2655 void java_lang_LiveStackFrameInfo::compute_offsets() {
2656 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2657 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2658 }
2659
2660 #if INCLUDE_CDS
2661 void java_lang_LiveStackFrameInfo::serialize(SerializeClosure* f) {
2662 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2663 }
2664 #endif
2665
2666 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2667 macro(override_offset, k, "override", bool_signature, false)
2668
2669 void java_lang_reflect_AccessibleObject::compute_offsets() {
2670 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2671 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2672 }
2673
2674 #if INCLUDE_CDS
2675 void java_lang_reflect_AccessibleObject::serialize(SerializeClosure* f) {
2676 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2677 }
2678 #endif
2679
2680 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 return (jboolean) reflect->bool_field(override_offset);
2683 }
2684
2685 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2686 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2687 reflect->bool_field_put(override_offset, (int) value);
2688 }
2689
2690 #define METHOD_FIELDS_DO(macro) \
2691 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2692 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2693 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2694 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2695 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2696 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2697 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2698 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2699 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2700 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2701 macro##_OPTIONAL(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature); \
2702 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2703
2704 void java_lang_reflect_Method::compute_offsets() {
2705 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2706 // The generic signature and annotations fields are only present in 1.5
2707 signature_offset = -1;
2708 annotations_offset = -1;
2709 parameter_annotations_offset = -1;
2710 annotation_default_offset = -1;
2711 type_annotations_offset = -1;
2712 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2713 }
2714
2715 #if INCLUDE_CDS
2716 void java_lang_reflect_Method::serialize(SerializeClosure* f) {
2717 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2718 }
2719 #endif
2720
2721 Handle java_lang_reflect_Method::create(TRAPS) {
2722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2723 Klass* klass = SystemDictionary::reflect_Method_klass();
2724 // This class is eagerly initialized during VM initialization, since we keep a refence
2725 // to one of the methods
2726 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2727 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2728 }
2729
2730 oop java_lang_reflect_Method::clazz(oop reflect) {
2731 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2732 return reflect->obj_field(clazz_offset);
2733 }
2734
2735 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2736 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2737 reflect->obj_field_put(clazz_offset, value);
2738 }
2739
2740 int java_lang_reflect_Method::slot(oop reflect) {
2741 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2742 return reflect->int_field(slot_offset);
2743 }
2744
2745 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2746 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2747 reflect->int_field_put(slot_offset, value);
2748 }
2749
2750 oop java_lang_reflect_Method::name(oop method) {
2751 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2752 return method->obj_field(name_offset);
2753 }
2754
2755 void java_lang_reflect_Method::set_name(oop method, oop value) {
2756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2757 method->obj_field_put(name_offset, value);
2758 }
2759
2760 oop java_lang_reflect_Method::return_type(oop method) {
2761 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2762 return method->obj_field(returnType_offset);
2763 }
2764
2765 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2766 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2767 method->obj_field_put(returnType_offset, value);
2768 }
2769
2770 oop java_lang_reflect_Method::parameter_types(oop method) {
2771 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2772 return method->obj_field(parameterTypes_offset);
2773 }
2774
2775 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2776 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2777 method->obj_field_put(parameterTypes_offset, value);
2778 }
2779
2780 oop java_lang_reflect_Method::exception_types(oop method) {
2781 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2782 return method->obj_field(exceptionTypes_offset);
2783 }
2784
2785 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2786 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2787 method->obj_field_put(exceptionTypes_offset, value);
2788 }
2789
2790 int java_lang_reflect_Method::modifiers(oop method) {
2791 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2792 return method->int_field(modifiers_offset);
2793 }
2794
2795 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2796 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2797 method->int_field_put(modifiers_offset, value);
2798 }
2799
2800 bool java_lang_reflect_Method::has_signature_field() {
2801 return (signature_offset >= 0);
2802 }
2803
2804 oop java_lang_reflect_Method::signature(oop method) {
2805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2806 assert(has_signature_field(), "signature field must be present");
2807 return method->obj_field(signature_offset);
2808 }
2809
2810 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2811 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2812 assert(has_signature_field(), "signature field must be present");
2813 method->obj_field_put(signature_offset, value);
2814 }
2815
2816 bool java_lang_reflect_Method::has_annotations_field() {
2817 return (annotations_offset >= 0);
2818 }
2819
2820 oop java_lang_reflect_Method::annotations(oop method) {
2821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2822 assert(has_annotations_field(), "annotations field must be present");
2823 return method->obj_field(annotations_offset);
2824 }
2825
2826 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2827 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2828 assert(has_annotations_field(), "annotations field must be present");
2829 method->obj_field_put(annotations_offset, value);
2830 }
2831
2832 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2833 return (parameter_annotations_offset >= 0);
2834 }
2835
2836 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2838 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2839 return method->obj_field(parameter_annotations_offset);
2840 }
2841
2842 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2844 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2845 method->obj_field_put(parameter_annotations_offset, value);
2846 }
2847
2848 bool java_lang_reflect_Method::has_annotation_default_field() {
2849 return (annotation_default_offset >= 0);
2850 }
2851
2852 oop java_lang_reflect_Method::annotation_default(oop method) {
2853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2854 assert(has_annotation_default_field(), "annotation default field must be present");
2855 return method->obj_field(annotation_default_offset);
2856 }
2857
2858 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2860 assert(has_annotation_default_field(), "annotation default field must be present");
2861 method->obj_field_put(annotation_default_offset, value);
2862 }
2863
2864 bool java_lang_reflect_Method::has_type_annotations_field() {
2865 return (type_annotations_offset >= 0);
2866 }
2867
2868 oop java_lang_reflect_Method::type_annotations(oop method) {
2869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2870 assert(has_type_annotations_field(), "type_annotations field must be present");
2871 return method->obj_field(type_annotations_offset);
2872 }
2873
2874 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2875 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2876 assert(has_type_annotations_field(), "type_annotations field must be present");
2877 method->obj_field_put(type_annotations_offset, value);
2878 }
2879
2880 #define CONSTRUCTOR_FIELDS_DO(macro) \
2881 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2882 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2883 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2884 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2885 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2886 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2887 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2888 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2889 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2890
2891
2892 void java_lang_reflect_Constructor::compute_offsets() {
2893 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2894 // The generic signature and annotations fields are only present in 1.5
2895 signature_offset = -1;
2896 annotations_offset = -1;
2897 parameter_annotations_offset = -1;
2898 type_annotations_offset = -1;
2899 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2900 }
2901
2902 #if INCLUDE_CDS
2903 void java_lang_reflect_Constructor::serialize(SerializeClosure* f) {
2904 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2905 }
2906 #endif
2907
2908 Handle java_lang_reflect_Constructor::create(TRAPS) {
2909 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2910 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2911 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2912 InstanceKlass* ik = InstanceKlass::cast(k);
2913 // Ensure it is initialized
2914 ik->initialize(CHECK_NH);
2915 return ik->allocate_instance_handle(THREAD);
2916 }
2917
2918 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2919 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2920 return reflect->obj_field(clazz_offset);
2921 }
2922
2923 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2924 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2925 reflect->obj_field_put(clazz_offset, value);
2926 }
2927
2928 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2929 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2930 return constructor->obj_field(parameterTypes_offset);
2931 }
2932
2933 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2934 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2935 constructor->obj_field_put(parameterTypes_offset, value);
2936 }
2937
2938 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2939 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2940 return constructor->obj_field(exceptionTypes_offset);
2941 }
2942
2943 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2944 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2945 constructor->obj_field_put(exceptionTypes_offset, value);
2946 }
2947
2948 int java_lang_reflect_Constructor::slot(oop reflect) {
2949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2950 return reflect->int_field(slot_offset);
2951 }
2952
2953 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2954 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2955 reflect->int_field_put(slot_offset, value);
2956 }
2957
2958 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2959 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2960 return constructor->int_field(modifiers_offset);
2961 }
2962
2963 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2964 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2965 constructor->int_field_put(modifiers_offset, value);
2966 }
2967
2968 bool java_lang_reflect_Constructor::has_signature_field() {
2969 return (signature_offset >= 0);
2970 }
2971
2972 oop java_lang_reflect_Constructor::signature(oop constructor) {
2973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974 assert(has_signature_field(), "signature field must be present");
2975 return constructor->obj_field(signature_offset);
2976 }
2977
2978 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2979 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2980 assert(has_signature_field(), "signature field must be present");
2981 constructor->obj_field_put(signature_offset, value);
2982 }
2983
2984 bool java_lang_reflect_Constructor::has_annotations_field() {
2985 return (annotations_offset >= 0);
2986 }
2987
2988 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2989 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2990 assert(has_annotations_field(), "annotations field must be present");
2991 return constructor->obj_field(annotations_offset);
2992 }
2993
2994 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2995 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2996 assert(has_annotations_field(), "annotations field must be present");
2997 constructor->obj_field_put(annotations_offset, value);
2998 }
2999
3000 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
3001 return (parameter_annotations_offset >= 0);
3002 }
3003
3004 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
3005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3006 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3007 return method->obj_field(parameter_annotations_offset);
3008 }
3009
3010 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3012 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3013 method->obj_field_put(parameter_annotations_offset, value);
3014 }
3015
3016 bool java_lang_reflect_Constructor::has_type_annotations_field() {
3017 return (type_annotations_offset >= 0);
3018 }
3019
3020 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
3021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3022 assert(has_type_annotations_field(), "type_annotations field must be present");
3023 return constructor->obj_field(type_annotations_offset);
3024 }
3025
3026 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
3027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3028 assert(has_type_annotations_field(), "type_annotations field must be present");
3029 constructor->obj_field_put(type_annotations_offset, value);
3030 }
3031
3032 #define FIELD_FIELDS_DO(macro) \
3033 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3034 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3035 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3036 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3037 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3038 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
3039 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
3040 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
3041
3042 void java_lang_reflect_Field::compute_offsets() {
3043 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3044 // The generic signature and annotations fields are only present in 1.5
3045 signature_offset = -1;
3046 annotations_offset = -1;
3047 type_annotations_offset = -1;
3048 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3049 }
3050
3051 #if INCLUDE_CDS
3052 void java_lang_reflect_Field::serialize(SerializeClosure* f) {
3053 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3054 }
3055 #endif
3056
3057 Handle java_lang_reflect_Field::create(TRAPS) {
3058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3059 Symbol* name = vmSymbols::java_lang_reflect_Field();
3060 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3061 InstanceKlass* ik = InstanceKlass::cast(k);
3062 // Ensure it is initialized
3063 ik->initialize(CHECK_NH);
3064 return ik->allocate_instance_handle(THREAD);
3065 }
3066
3067 oop java_lang_reflect_Field::clazz(oop reflect) {
3068 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3069 return reflect->obj_field(clazz_offset);
3070 }
3071
3072 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3074 reflect->obj_field_put(clazz_offset, value);
3075 }
3076
3077 oop java_lang_reflect_Field::name(oop field) {
3078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3079 return field->obj_field(name_offset);
3080 }
3081
3082 void java_lang_reflect_Field::set_name(oop field, oop value) {
3083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3084 field->obj_field_put(name_offset, value);
3085 }
3086
3087 oop java_lang_reflect_Field::type(oop field) {
3088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3089 return field->obj_field(type_offset);
3090 }
3091
3092 void java_lang_reflect_Field::set_type(oop field, oop value) {
3093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3094 field->obj_field_put(type_offset, value);
3095 }
3096
3097 int java_lang_reflect_Field::slot(oop reflect) {
3098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3099 return reflect->int_field(slot_offset);
3100 }
3101
3102 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3103 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3104 reflect->int_field_put(slot_offset, value);
3105 }
3106
3107 int java_lang_reflect_Field::modifiers(oop field) {
3108 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3109 return field->int_field(modifiers_offset);
3110 }
3111
3112 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3113 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3114 field->int_field_put(modifiers_offset, value);
3115 }
3116
3117 bool java_lang_reflect_Field::has_signature_field() {
3118 return (signature_offset >= 0);
3119 }
3120
3121 oop java_lang_reflect_Field::signature(oop field) {
3122 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3123 assert(has_signature_field(), "signature field must be present");
3124 return field->obj_field(signature_offset);
3125 }
3126
3127 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3128 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3129 assert(has_signature_field(), "signature field must be present");
3130 field->obj_field_put(signature_offset, value);
3131 }
3132
3133 bool java_lang_reflect_Field::has_annotations_field() {
3134 return (annotations_offset >= 0);
3135 }
3136
3137 oop java_lang_reflect_Field::annotations(oop field) {
3138 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3139 assert(has_annotations_field(), "annotations field must be present");
3140 return field->obj_field(annotations_offset);
3141 }
3142
3143 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3144 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3145 assert(has_annotations_field(), "annotations field must be present");
3146 field->obj_field_put(annotations_offset, value);
3147 }
3148
3149 bool java_lang_reflect_Field::has_type_annotations_field() {
3150 return (type_annotations_offset >= 0);
3151 }
3152
3153 oop java_lang_reflect_Field::type_annotations(oop field) {
3154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3155 assert(has_type_annotations_field(), "type_annotations field must be present");
3156 return field->obj_field(type_annotations_offset);
3157 }
3158
3159 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
3160 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3161 assert(has_type_annotations_field(), "type_annotations field must be present");
3162 field->obj_field_put(type_annotations_offset, value);
3163 }
3164
3165 #define CONSTANTPOOL_FIELDS_DO(macro) \
3166 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3167
3168 void reflect_ConstantPool::compute_offsets() {
3169 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3170 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3171 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3172 }
3173
3174 #if INCLUDE_CDS
3175 void reflect_ConstantPool::serialize(SerializeClosure* f) {
3176 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3177 }
3178 #endif
3179
3180 #define PARAMETER_FIELDS_DO(macro) \
3181 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3182 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3183 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3184 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3185
3186 void java_lang_reflect_Parameter::compute_offsets() {
3187 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3188 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3189 }
3190
3191 #if INCLUDE_CDS
3192 void java_lang_reflect_Parameter::serialize(SerializeClosure* f) {
3193 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3194 }
3195 #endif
3196
3197 Handle java_lang_reflect_Parameter::create(TRAPS) {
3198 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3199 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3200 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3201 InstanceKlass* ik = InstanceKlass::cast(k);
3202 // Ensure it is initialized
3203 ik->initialize(CHECK_NH);
3204 return ik->allocate_instance_handle(THREAD);
3205 }
3206
3207 oop java_lang_reflect_Parameter::name(oop param) {
3208 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3209 return param->obj_field(name_offset);
3210 }
3211
3212 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3213 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3214 param->obj_field_put(name_offset, value);
3215 }
3216
3217 int java_lang_reflect_Parameter::modifiers(oop param) {
3218 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3219 return param->int_field(modifiers_offset);
3220 }
3221
3222 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3223 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3224 param->int_field_put(modifiers_offset, value);
3225 }
3226
3227 int java_lang_reflect_Parameter::index(oop param) {
3228 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3229 return param->int_field(index_offset);
3230 }
3231
3232 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3233 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3234 param->int_field_put(index_offset, value);
3235 }
3236
3237 oop java_lang_reflect_Parameter::executable(oop param) {
3238 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3239 return param->obj_field(executable_offset);
3240 }
3241
3242 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3243 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3244 param->obj_field_put(executable_offset, value);
3245 }
3246
3247
3248 int java_lang_Module::loader_offset;
3249 int java_lang_Module::name_offset;
3250 int java_lang_Module::_module_entry_offset = -1;
3251
3252 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3253 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3254
3255 Symbol* name = vmSymbols::java_lang_Module();
3256 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3257 InstanceKlass* ik = InstanceKlass::cast(k);
3258 Handle jlmh = ik->allocate_instance_handle(CHECK_NH);
3259 JavaValue result(T_VOID);
3260 JavaCalls::call_special(&result, jlmh, ik,
3261 vmSymbols::object_initializer_name(),
3262 vmSymbols::java_lang_module_init_signature(),
3263 loader, module_name, CHECK_NH);
3264 return jlmh;
3265 }
3266
3267 #define MODULE_FIELDS_DO(macro) \
3268 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3269 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3270
3271 void java_lang_Module::compute_offsets() {
3272 InstanceKlass* k = SystemDictionary::Module_klass();
3273 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3274 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3275 }
3276
3277 #if INCLUDE_CDS
3278 void java_lang_Module::serialize(SerializeClosure* f) {
3279 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3280 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3281 }
3282 #endif
3283
3284 oop java_lang_Module::loader(oop module) {
3285 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3286 return module->obj_field(loader_offset);
3287 }
3288
3289 void java_lang_Module::set_loader(oop module, oop value) {
3290 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3291 module->obj_field_put(loader_offset, value);
3292 }
3293
3294 oop java_lang_Module::name(oop module) {
3295 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3296 return module->obj_field(name_offset);
3297 }
3298
3299 void java_lang_Module::set_name(oop module, oop value) {
3300 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3301 module->obj_field_put(name_offset, value);
3302 }
3303
3304 ModuleEntry* java_lang_Module::module_entry(oop module) {
3305 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3306 assert(module != NULL, "module can't be null");
3307 assert(oopDesc::is_oop(module), "module must be oop");
3308
3309 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3310 if (module_entry == NULL) {
3311 // If the inject field containing the ModuleEntry* is null then return the
3312 // class loader's unnamed module.
3313 oop loader = java_lang_Module::loader(module);
3314 Handle h_loader = Handle(Thread::current(), loader);
3315 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3316 return loader_cld->unnamed_module();
3317 }
3318 return module_entry;
3319 }
3320
3321 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3322 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3323 assert(module != NULL, "module can't be null");
3324 assert(oopDesc::is_oop(module), "module must be oop");
3325 module->address_field_put(_module_entry_offset, (address)module_entry);
3326 }
3327
3328 Handle reflect_ConstantPool::create(TRAPS) {
3329 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3330 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3331 // Ensure it is initialized
3332 k->initialize(CHECK_NH);
3333 return k->allocate_instance_handle(THREAD);
3334 }
3335
3336
3337 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3338 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3339 oop mirror = value->pool_holder()->java_mirror();
3340 // Save the mirror to get back the constant pool.
3341 reflect->obj_field_put(_oop_offset, mirror);
3342 }
3343
3344 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3345 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3346
3347 oop mirror = reflect->obj_field(_oop_offset);
3348 Klass* k = java_lang_Class::as_Klass(mirror);
3349 assert(k->is_instance_klass(), "Must be");
3350
3351 // Get the constant pool back from the klass. Since class redefinition
3352 // merges the new constant pool into the old, this is essentially the
3353 // same constant pool as the original. If constant pool merging is
3354 // no longer done in the future, this will have to change to save
3355 // the original.
3356 return InstanceKlass::cast(k)->constants();
3357 }
3358
3359 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3360 macro(_base_offset, k, "base", object_signature, false)
3361
3362 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3363 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3364 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3365 }
3366
3367 #if INCLUDE_CDS
3368 void reflect_UnsafeStaticFieldAccessorImpl::serialize(SerializeClosure* f) {
3369 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3370 }
3371 #endif
3372
3373 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3374 Klass* k = SystemDictionary::box_klass(type);
3375 if (k == NULL) return NULL;
3376 InstanceKlass* ik = InstanceKlass::cast(k);
3377 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3378 return ik->allocate_instance(THREAD);
3379 }
3380
3381
3382 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3383 oop box = initialize_and_allocate(type, CHECK_0);
3384 if (box == NULL) return NULL;
3385 switch (type) {
3386 case T_BOOLEAN:
3387 box->bool_field_put(value_offset, value->z);
3388 break;
3389 case T_CHAR:
3390 box->char_field_put(value_offset, value->c);
3391 break;
3392 case T_FLOAT:
3393 box->float_field_put(value_offset, value->f);
3394 break;
3395 case T_DOUBLE:
3396 box->double_field_put(long_value_offset, value->d);
3397 break;
3398 case T_BYTE:
3399 box->byte_field_put(value_offset, value->b);
3400 break;
3401 case T_SHORT:
3402 box->short_field_put(value_offset, value->s);
3403 break;
3404 case T_INT:
3405 box->int_field_put(value_offset, value->i);
3406 break;
3407 case T_LONG:
3408 box->long_field_put(long_value_offset, value->j);
3409 break;
3410 default:
3411 return NULL;
3412 }
3413 return box;
3414 }
3415
3416
3417 BasicType java_lang_boxing_object::basic_type(oop box) {
3418 if (box == NULL) return T_ILLEGAL;
3419 BasicType type = SystemDictionary::box_klass_type(box->klass());
3420 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3421 return T_ILLEGAL;
3422 return type;
3423 }
3424
3425
3426 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3427 BasicType type = SystemDictionary::box_klass_type(box->klass());
3428 switch (type) {
3429 case T_BOOLEAN:
3430 value->z = box->bool_field(value_offset);
3431 break;
3432 case T_CHAR:
3433 value->c = box->char_field(value_offset);
3434 break;
3435 case T_FLOAT:
3436 value->f = box->float_field(value_offset);
3437 break;
3438 case T_DOUBLE:
3439 value->d = box->double_field(long_value_offset);
3440 break;
3441 case T_BYTE:
3442 value->b = box->byte_field(value_offset);
3443 break;
3444 case T_SHORT:
3445 value->s = box->short_field(value_offset);
3446 break;
3447 case T_INT:
3448 value->i = box->int_field(value_offset);
3449 break;
3450 case T_LONG:
3451 value->j = box->long_field(long_value_offset);
3452 break;
3453 default:
3454 return T_ILLEGAL;
3455 } // end switch
3456 return type;
3457 }
3458
3459
3460 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3461 BasicType type = SystemDictionary::box_klass_type(box->klass());
3462 switch (type) {
3463 case T_BOOLEAN:
3464 box->bool_field_put(value_offset, value->z);
3465 break;
3466 case T_CHAR:
3467 box->char_field_put(value_offset, value->c);
3468 break;
3469 case T_FLOAT:
3470 box->float_field_put(value_offset, value->f);
3471 break;
3472 case T_DOUBLE:
3473 box->double_field_put(long_value_offset, value->d);
3474 break;
3475 case T_BYTE:
3476 box->byte_field_put(value_offset, value->b);
3477 break;
3478 case T_SHORT:
3479 box->short_field_put(value_offset, value->s);
3480 break;
3481 case T_INT:
3482 box->int_field_put(value_offset, value->i);
3483 break;
3484 case T_LONG:
3485 box->long_field_put(long_value_offset, value->j);
3486 break;
3487 default:
3488 return T_ILLEGAL;
3489 } // end switch
3490 return type;
3491 }
3492
3493
3494 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3495 switch (type) {
3496 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3497 case T_CHAR: st->print("%d", value->c); break;
3498 case T_BYTE: st->print("%d", value->b); break;
3499 case T_SHORT: st->print("%d", value->s); break;
3500 case T_INT: st->print("%d", value->i); break;
3501 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3502 case T_FLOAT: st->print("%f", value->f); break;
3503 case T_DOUBLE: st->print("%lf", value->d); break;
3504 default: st->print("type %d?", type); break;
3505 }
3506 }
3507
3508 // Support for java_lang_ref_Reference
3509
3510 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3511 assert(!oopDesc::is_null(obj), "sanity");
3512 if (offset != java_lang_ref_Reference::referent_offset) {
3513 return false;
3514 }
3515
3516 Klass* k = obj->klass();
3517 if (!k->is_instance_klass()) {
3518 return false;
3519 }
3520
3521 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3522 bool is_reference = ik->reference_type() != REF_NONE;
3523 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3524 return is_reference;
3525 }
3526
3527 // Support for java_lang_ref_SoftReference
3528 //
3529
3530 #define SOFTREFERENCE_FIELDS_DO(macro) \
3531 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3532 macro(static_clock_offset, k, "clock", long_signature, true)
3533
3534 void java_lang_ref_SoftReference::compute_offsets() {
3535 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3536 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3537 }
3538
3539 #if INCLUDE_CDS
3540 void java_lang_ref_SoftReference::serialize(SerializeClosure* f) {
3541 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3542 }
3543 #endif
3544
3545 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3546 return ref->long_field(timestamp_offset);
3547 }
3548
3549 jlong java_lang_ref_SoftReference::clock() {
3550 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3551 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3552 return *offset;
3553 }
3554
3555 void java_lang_ref_SoftReference::set_clock(jlong value) {
3556 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3557 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3558 *offset = value;
3559 }
3560
3561 // Support for java_lang_invoke_DirectMethodHandle
3562
3563 int java_lang_invoke_DirectMethodHandle::_member_offset;
3564
3565 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3566 oop member_name = NULL;
3567 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3568 "a DirectMethodHandle oop is expected");
3569 return dmh->obj_field(member_offset_in_bytes());
3570 }
3571
3572 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3573 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3574
3575 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3576 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3577 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3578 }
3579
3580 #if INCLUDE_CDS
3581 void java_lang_invoke_DirectMethodHandle::serialize(SerializeClosure* f) {
3582 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3583 }
3584 #endif
3585
3586 // Support for java_lang_invoke_MethodHandle
3587
3588 int java_lang_invoke_MethodHandle::_type_offset;
3589 int java_lang_invoke_MethodHandle::_form_offset;
3590
3591 int java_lang_invoke_MemberName::_clazz_offset;
3592 int java_lang_invoke_MemberName::_name_offset;
3593 int java_lang_invoke_MemberName::_type_offset;
3594 int java_lang_invoke_MemberName::_flags_offset;
3595 int java_lang_invoke_MemberName::_method_offset;
3596 int java_lang_invoke_MemberName::_vmindex_offset;
3597
3598 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3599 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3600
3601 int java_lang_invoke_LambdaForm::_vmentry_offset;
3602
3603 #define METHODHANDLE_FIELDS_DO(macro) \
3604 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3605 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3606
3607 void java_lang_invoke_MethodHandle::compute_offsets() {
3608 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3609 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3610 }
3611
3612 #if INCLUDE_CDS
3613 void java_lang_invoke_MethodHandle::serialize(SerializeClosure* f) {
3614 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3615 }
3616 #endif
3617
3618 #define MEMBERNAME_FIELDS_DO(macro) \
3619 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3620 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3621 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3622 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3623 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3624
3625 void java_lang_invoke_MemberName::compute_offsets() {
3626 InstanceKlass* k = SystemDictionary::MemberName_klass();
3627 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3628 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3629 }
3630
3631 #if INCLUDE_CDS
3632 void java_lang_invoke_MemberName::serialize(SerializeClosure* f) {
3633 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3634 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3635 }
3636 #endif
3637
3638 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3639 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3640 assert(k != NULL, "jdk mismatch");
3641 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3642 }
3643
3644 #if INCLUDE_CDS
3645 void java_lang_invoke_ResolvedMethodName::serialize(SerializeClosure* f) {
3646 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3647 }
3648 #endif
3649
3650 #define LAMBDAFORM_FIELDS_DO(macro) \
3651 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3652
3653 void java_lang_invoke_LambdaForm::compute_offsets() {
3654 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3655 assert (k != NULL, "jdk mismatch");
3656 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3657 }
3658
3659 #if INCLUDE_CDS
3660 void java_lang_invoke_LambdaForm::serialize(SerializeClosure* f) {
3661 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3662 }
3663 #endif
3664
3665 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3666 return obj != NULL && is_subclass(obj->klass());
3667 }
3668
3669
3670 oop java_lang_invoke_MethodHandle::type(oop mh) {
3671 return mh->obj_field(_type_offset);
3672 }
3673
3674 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3675 mh->obj_field_put(_type_offset, mtype);
3676 }
3677
3678 oop java_lang_invoke_MethodHandle::form(oop mh) {
3679 assert(_form_offset != 0, "");
3680 return mh->obj_field(_form_offset);
3681 }
3682
3683 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3684 assert(_form_offset != 0, "");
3685 mh->obj_field_put(_form_offset, lform);
3686 }
3687
3688 /// MemberName accessors
3689
3690 oop java_lang_invoke_MemberName::clazz(oop mname) {
3691 assert(is_instance(mname), "wrong type");
3692 return mname->obj_field(_clazz_offset);
3693 }
3694
3695 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3696 assert(is_instance(mname), "wrong type");
3697 mname->obj_field_put(_clazz_offset, clazz);
3698 }
3699
3700 oop java_lang_invoke_MemberName::name(oop mname) {
3701 assert(is_instance(mname), "wrong type");
3702 return mname->obj_field(_name_offset);
3703 }
3704
3705 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3706 assert(is_instance(mname), "wrong type");
3707 mname->obj_field_put(_name_offset, name);
3708 }
3709
3710 oop java_lang_invoke_MemberName::type(oop mname) {
3711 assert(is_instance(mname), "wrong type");
3712 return mname->obj_field(_type_offset);
3713 }
3714
3715 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3716 assert(is_instance(mname), "wrong type");
3717 mname->obj_field_put(_type_offset, type);
3718 }
3719
3720 int java_lang_invoke_MemberName::flags(oop mname) {
3721 assert(is_instance(mname), "wrong type");
3722 return mname->int_field(_flags_offset);
3723 }
3724
3725 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3726 assert(is_instance(mname), "wrong type");
3727 mname->int_field_put(_flags_offset, flags);
3728 }
3729
3730
3731 // Return vmtarget from ResolvedMethodName method field through indirection
3732 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3733 assert(is_instance(mname), "wrong type");
3734 oop method = mname->obj_field(_method_offset);
3735 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3736 }
3737
3738 bool java_lang_invoke_MemberName::is_method(oop mname) {
3739 assert(is_instance(mname), "must be MemberName");
3740 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3741 }
3742
3743 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3744 assert(is_instance(mname), "wrong type");
3745 mname->obj_field_put(_method_offset, resolved_method);
3746 }
3747
3748 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3749 assert(is_instance(mname), "wrong type");
3750 return (intptr_t) mname->address_field(_vmindex_offset);
3751 }
3752
3753 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3754 assert(is_instance(mname), "wrong type");
3755 mname->address_field_put(_vmindex_offset, (address) index);
3756 }
3757
3758
3759 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3760 assert(is_instance(resolved_method), "wrong type");
3761 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3762 assert(m->is_method(), "must be");
3763 return m;
3764 }
3765
3766 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3767 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3768 assert(is_instance(resolved_method), "wrong type");
3769 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3770 }
3771
3772 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3773 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3774 oop resolved_method = ResolvedMethodTable::find_method(m());
3775 if (resolved_method == NULL) {
3776 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3777 if (!k->is_initialized()) {
3778 k->initialize(CHECK_NULL);
3779 }
3780 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3781 new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
3782 // Add a reference to the loader (actually mirror because anonymous classes will not have
3783 // distinct loaders) to ensure the metadata is kept alive.
3784 // This mirror may be different than the one in clazz field.
3785 new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
3786 resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
3787 }
3788 return resolved_method;
3789 }
3790
3791 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3792 assert(is_instance(lform), "wrong type");
3793 return lform->obj_field(_vmentry_offset);
3794 }
3795
3796
3797 // Support for java_lang_invoke_MethodType
3798
3799 int java_lang_invoke_MethodType::_rtype_offset;
3800 int java_lang_invoke_MethodType::_ptypes_offset;
3801
3802 #define METHODTYPE_FIELDS_DO(macro) \
3803 macro(_rtype_offset, k, "rtype", class_signature, false); \
3804 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3805
3806 void java_lang_invoke_MethodType::compute_offsets() {
3807 InstanceKlass* k = SystemDictionary::MethodType_klass();
3808 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3809 }
3810
3811 #if INCLUDE_CDS
3812 void java_lang_invoke_MethodType::serialize(SerializeClosure* f) {
3813 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3814 }
3815 #endif
3816
3817 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3818 st->print("(");
3819 objArrayOop pts = ptypes(mt);
3820 for (int i = 0, limit = pts->length(); i < limit; i++) {
3821 java_lang_Class::print_signature(pts->obj_at(i), st);
3822 }
3823 st->print(")");
3824 java_lang_Class::print_signature(rtype(mt), st);
3825 }
3826
3827 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3828 ResourceMark rm;
3829 stringStream buffer(128);
3830 print_signature(mt, &buffer);
3831 const char* sigstr = buffer.base();
3832 int siglen = (int) buffer.size();
3833 Symbol *name;
3834 if (!intern_if_not_found) {
3835 name = SymbolTable::probe(sigstr, siglen);
3836 } else {
3837 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3838 }
3839 return name;
3840 }
3841
3842 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3843 if (mt1 == mt2)
3844 return true;
3845 if (rtype(mt1) != rtype(mt2))
3846 return false;
3847 if (ptype_count(mt1) != ptype_count(mt2))
3848 return false;
3849 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3850 if (ptype(mt1, i) != ptype(mt2, i))
3851 return false;
3852 }
3853 return true;
3854 }
3855
3856 oop java_lang_invoke_MethodType::rtype(oop mt) {
3857 assert(is_instance(mt), "must be a MethodType");
3858 return mt->obj_field(_rtype_offset);
3859 }
3860
3861 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3862 assert(is_instance(mt), "must be a MethodType");
3863 return (objArrayOop) mt->obj_field(_ptypes_offset);
3864 }
3865
3866 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3867 return ptypes(mt)->obj_at(idx);
3868 }
3869
3870 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3871 return ptypes(mt)->length();
3872 }
3873
3874 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3875 objArrayOop pts = ptypes(mt);
3876 int count = pts->length();
3877 int slots = 0;
3878 for (int i = 0; i < count; i++) {
3879 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3880 slots += type2size[bt];
3881 }
3882 return slots;
3883 }
3884
3885 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3886 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3887 return type2size[bt];
3888 }
3889
3890
3891 // Support for java_lang_invoke_CallSite
3892
3893 int java_lang_invoke_CallSite::_target_offset;
3894 int java_lang_invoke_CallSite::_context_offset;
3895
3896 #define CALLSITE_FIELDS_DO(macro) \
3897 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3898 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3899
3900 void java_lang_invoke_CallSite::compute_offsets() {
3901 InstanceKlass* k = SystemDictionary::CallSite_klass();
3902 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3903 }
3904
3905 #if INCLUDE_CDS
3906 void java_lang_invoke_CallSite::serialize(SerializeClosure* f) {
3907 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3908 }
3909 #endif
3910
3911 oop java_lang_invoke_CallSite::context(oop call_site) {
3912 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3913
3914 oop dep_oop = call_site->obj_field(_context_offset);
3915 return dep_oop;
3916 }
3917
3918 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3919
3920 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3921
3922 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3923 InstanceKlass* k = SystemDictionary::Context_klass();
3924 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3925 }
3926
3927 #if INCLUDE_CDS
3928 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize(SerializeClosure* f) {
3929 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3930 }
3931 #endif
3932
3933 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3934 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3935 intptr_t* vmdeps_addr = (intptr_t*)call_site->field_addr(_vmdependencies_offset);
3936 DependencyContext dep_ctx(vmdeps_addr);
3937 return dep_ctx;
3938 }
3939
3940 // Support for java_security_AccessControlContext
3941
3942 int java_security_AccessControlContext::_context_offset = 0;
3943 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3944 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3945 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3946
3947 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3948 macro(_context_offset, k, "context", protectiondomain_signature, false); \
3949 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3950 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
3951 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
3952
3953 void java_security_AccessControlContext::compute_offsets() {
3954 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3955 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3956 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3957 }
3958
3959 #if INCLUDE_CDS
3960 void java_security_AccessControlContext::serialize(SerializeClosure* f) {
3961 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3962 }
3963 #endif
3964
3965 bool java_security_AccessControlContext::is_authorized(Handle context) {
3966 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3967 assert(_isAuthorized_offset != -1, "should be set");
3968 return context->bool_field(_isAuthorized_offset) != 0;
3969 }
3970
3971 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3972 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3973 // Ensure klass is initialized
3974 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3975 // Allocate result
3976 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3977 // Fill in values
3978 result->obj_field_put(_context_offset, context());
3979 result->obj_field_put(_privilegedContext_offset, privileged_context());
3980 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3981 // whitelist AccessControlContexts created by the JVM if present
3982 if (_isAuthorized_offset != -1) {
3983 result->bool_field_put(_isAuthorized_offset, true);
3984 }
3985 return result;
3986 }
3987
3988
3989 // Support for java_lang_ClassLoader
3990
3991 bool java_lang_ClassLoader::offsets_computed = false;
3992 int java_lang_ClassLoader::_loader_data_offset = -1;
3993 int java_lang_ClassLoader::parallelCapable_offset = -1;
3994 int java_lang_ClassLoader::name_offset = -1;
3995 int java_lang_ClassLoader::unnamedModule_offset = -1;
3996
3997 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3998 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3999 return HeapAccess<>::load_at(loader, _loader_data_offset);
4000 }
4001
4002 ClassLoaderData* java_lang_ClassLoader::cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data) {
4003 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4004 return HeapAccess<>::atomic_cmpxchg_at(new_data, loader, _loader_data_offset, expected_data);
4005 }
4006
4007 #define CLASSLOADER_FIELDS_DO(macro) \
4008 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4009 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4010 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4011 macro(parent_offset, k1, "parent", classloader_signature, false)
4012
4013 void java_lang_ClassLoader::compute_offsets() {
4014 assert(!offsets_computed, "offsets should be initialized only once");
4015 offsets_computed = true;
4016
4017 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4018 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4019
4020 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4021 }
4022
4023 #if INCLUDE_CDS
4024 void java_lang_ClassLoader::serialize(SerializeClosure* f) {
4025 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4026 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4027 }
4028 #endif
4029
4030 oop java_lang_ClassLoader::parent(oop loader) {
4031 assert(is_instance(loader), "loader must be oop");
4032 return loader->obj_field(parent_offset);
4033 }
4034
4035 oop java_lang_ClassLoader::name(oop loader) {
4036 assert(is_instance(loader), "loader must be oop");
4037 return loader->obj_field(name_offset);
4038 }
4039
4040 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4041 assert(is_instance(loader), "loader must be oop");
4042 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4043 oop acl = loader;
4044 debug_only(jint loop_count = 0);
4045 // This loop taken verbatim from ClassLoader.java:
4046 do {
4047 acl = parent(acl);
4048 if (cl == acl) {
4049 return true;
4050 }
4051 assert(++loop_count > 0, "loop_count overflow");
4052 } while (acl != NULL);
4053 return false;
4054 }
4055
4056 bool java_lang_ClassLoader::is_instance(oop obj) {
4057 return obj != NULL && is_subclass(obj->klass());
4058 }
4059
4060
4061 // For class loader classes, parallelCapable defined
4062 // based on non-null field
4063 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4064 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4065 if (parallelCapable_offset == -1) {
4066 // Default for backward compatibility is false
4067 return false;
4068 }
4069 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4070 }
4071
4072 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4073 // Fix for 4474172; see evaluation for more details
4074 loader = non_reflection_class_loader(loader);
4075
4076 oop cl = SystemDictionary::java_system_loader();
4077 while(cl != NULL) {
4078 if (cl == loader) return true;
4079 cl = parent(cl);
4080 }
4081 return false;
4082 }
4083
4084 // Return true if this is one of the class loaders associated with
4085 // the generated bytecodes for reflection.
4086 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4087 if (loader != NULL) {
4088 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4089 // This might be null in non-1.4 JDKs
4090 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4091 }
4092 return false;
4093 }
4094
4095 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4096 // See whether this is one of the class loaders associated with
4097 // the generated bytecodes for reflection, and if so, "magically"
4098 // delegate to its parent to prevent class loading from occurring
4099 // in places where applications using reflection didn't expect it.
4100 if (is_reflection_class_loader(loader)) {
4101 return parent(loader);
4102 }
4103 return loader;
4104 }
4105
4106 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4107 assert(is_instance(loader), "loader must be oop");
4108 return loader->obj_field(unnamedModule_offset);
4109 }
4110
4111 // Support for java_lang_System
4112 //
4113 #define SYSTEM_FIELDS_DO(macro) \
4114 macro(static_in_offset, k, "in", input_stream_signature, true); \
4115 macro(static_out_offset, k, "out", print_stream_signature, true); \
4116 macro(static_err_offset, k, "err", print_stream_signature, true); \
4117 macro(static_security_offset, k, "security", security_manager_signature, true)
4118
4119 void java_lang_System::compute_offsets() {
4120 InstanceKlass* k = SystemDictionary::System_klass();
4121 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4122 }
4123
4124 #if INCLUDE_CDS
4125 void java_lang_System::serialize(SerializeClosure* f) {
4126 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4127 }
4128 #endif
4129
4130 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4131 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4132 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4133
4134
4135 bool java_lang_System::has_security_manager() {
4136 InstanceKlass* ik = SystemDictionary::System_klass();
4137 address addr = ik->static_field_addr(static_security_offset);
4138 if (UseCompressedOops) {
4139 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
4140 } else {
4141 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
4142 }
4143 }
4144
4145 int java_lang_Class::_klass_offset;
4146 int java_lang_Class::_array_klass_offset;
4147 int java_lang_Class::_oop_size_offset;
4148 int java_lang_Class::_static_oop_field_count_offset;
4149 int java_lang_Class::_class_loader_offset;
4150 int java_lang_Class::_module_offset;
4151 int java_lang_Class::_protection_domain_offset;
4152 int java_lang_Class::_component_mirror_offset;
4153 int java_lang_Class::_init_lock_offset;
4154 int java_lang_Class::_signers_offset;
4155 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4156 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4157 int java_lang_Throwable::backtrace_offset;
4158 int java_lang_Throwable::detailMessage_offset;
4159 int java_lang_Throwable::stackTrace_offset;
4160 int java_lang_Throwable::depth_offset;
4161 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4162 int java_lang_reflect_AccessibleObject::override_offset;
4163 int java_lang_reflect_Method::clazz_offset;
4164 int java_lang_reflect_Method::name_offset;
4165 int java_lang_reflect_Method::returnType_offset;
4166 int java_lang_reflect_Method::parameterTypes_offset;
4167 int java_lang_reflect_Method::exceptionTypes_offset;
4168 int java_lang_reflect_Method::slot_offset;
4169 int java_lang_reflect_Method::modifiers_offset;
4170 int java_lang_reflect_Method::signature_offset;
4171 int java_lang_reflect_Method::annotations_offset;
4172 int java_lang_reflect_Method::parameter_annotations_offset;
4173 int java_lang_reflect_Method::annotation_default_offset;
4174 int java_lang_reflect_Method::type_annotations_offset;
4175 int java_lang_reflect_Constructor::clazz_offset;
4176 int java_lang_reflect_Constructor::parameterTypes_offset;
4177 int java_lang_reflect_Constructor::exceptionTypes_offset;
4178 int java_lang_reflect_Constructor::slot_offset;
4179 int java_lang_reflect_Constructor::modifiers_offset;
4180 int java_lang_reflect_Constructor::signature_offset;
4181 int java_lang_reflect_Constructor::annotations_offset;
4182 int java_lang_reflect_Constructor::parameter_annotations_offset;
4183 int java_lang_reflect_Constructor::type_annotations_offset;
4184 int java_lang_reflect_Field::clazz_offset;
4185 int java_lang_reflect_Field::name_offset;
4186 int java_lang_reflect_Field::type_offset;
4187 int java_lang_reflect_Field::slot_offset;
4188 int java_lang_reflect_Field::modifiers_offset;
4189 int java_lang_reflect_Field::signature_offset;
4190 int java_lang_reflect_Field::annotations_offset;
4191 int java_lang_reflect_Field::type_annotations_offset;
4192 int java_lang_reflect_Parameter::name_offset;
4193 int java_lang_reflect_Parameter::modifiers_offset;
4194 int java_lang_reflect_Parameter::index_offset;
4195 int java_lang_reflect_Parameter::executable_offset;
4196 int java_lang_boxing_object::value_offset;
4197 int java_lang_boxing_object::long_value_offset;
4198 int java_lang_ref_Reference::referent_offset;
4199 int java_lang_ref_Reference::queue_offset;
4200 int java_lang_ref_Reference::next_offset;
4201 int java_lang_ref_Reference::discovered_offset;
4202 int java_lang_ref_SoftReference::timestamp_offset;
4203 int java_lang_ref_SoftReference::static_clock_offset;
4204 int java_lang_ClassLoader::parent_offset;
4205 int java_lang_System::static_in_offset;
4206 int java_lang_System::static_out_offset;
4207 int java_lang_System::static_err_offset;
4208 int java_lang_System::static_security_offset;
4209 int java_lang_StackTraceElement::methodName_offset;
4210 int java_lang_StackTraceElement::fileName_offset;
4211 int java_lang_StackTraceElement::lineNumber_offset;
4212 int java_lang_StackTraceElement::moduleName_offset;
4213 int java_lang_StackTraceElement::moduleVersion_offset;
4214 int java_lang_StackTraceElement::classLoaderName_offset;
4215 int java_lang_StackTraceElement::declaringClass_offset;
4216 int java_lang_StackTraceElement::declaringClassObject_offset;
4217 int java_lang_StackFrameInfo::_memberName_offset;
4218 int java_lang_StackFrameInfo::_bci_offset;
4219 int java_lang_StackFrameInfo::_version_offset;
4220 int java_lang_LiveStackFrameInfo::_monitors_offset;
4221 int java_lang_LiveStackFrameInfo::_locals_offset;
4222 int java_lang_LiveStackFrameInfo::_operands_offset;
4223 int java_lang_LiveStackFrameInfo::_mode_offset;
4224 int java_lang_AssertionStatusDirectives::classes_offset;
4225 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4226 int java_lang_AssertionStatusDirectives::packages_offset;
4227 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4228 int java_lang_AssertionStatusDirectives::deflt_offset;
4229 int java_nio_Buffer::_limit_offset;
4230 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
4231 int reflect_ConstantPool::_oop_offset;
4232 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4233
4234 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4235 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4236 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4237 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4238 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4239 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4240 macro(methodName_offset, k, "methodName", string_signature, false); \
4241 macro(fileName_offset, k, "fileName", string_signature, false); \
4242 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4243
4244 // Support for java_lang_StackTraceElement
4245 void java_lang_StackTraceElement::compute_offsets() {
4246 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4247 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4248 }
4249
4250 #if INCLUDE_CDS
4251 void java_lang_StackTraceElement::serialize(SerializeClosure* f) {
4252 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4253 }
4254 #endif
4255
4256 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4257 element->obj_field_put(fileName_offset, value);
4258 }
4259
4260 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4261 element->obj_field_put(declaringClass_offset, value);
4262 }
4263
4264 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4265 element->obj_field_put(methodName_offset, value);
4266 }
4267
4268 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4269 element->int_field_put(lineNumber_offset, value);
4270 }
4271
4272 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4273 element->obj_field_put(moduleName_offset, value);
4274 }
4275
4276 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4277 element->obj_field_put(moduleVersion_offset, value);
4278 }
4279
4280 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4281 element->obj_field_put(classLoaderName_offset, value);
4282 }
4283
4284 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4285 element->obj_field_put(declaringClassObject_offset, value);
4286 }
4287
4288 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4289 element->short_field_put(_version_offset, value);
4290 }
4291
4292 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4293 element->int_field_put(_bci_offset, value);
4294 }
4295
4296 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4297 element->obj_field_put(_monitors_offset, value);
4298 }
4299
4300 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4301 element->obj_field_put(_locals_offset, value);
4302 }
4303
4304 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4305 element->obj_field_put(_operands_offset, value);
4306 }
4307
4308 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4309 element->int_field_put(_mode_offset, value);
4310 }
4311
4312 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4313 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4314 macro(classes_offset, k, "classes", string_array_signature, false); \
4315 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4316 macro(packages_offset, k, "packages", string_array_signature, false); \
4317 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4318 macro(deflt_offset, k, "deflt", bool_signature, false)
4319
4320 void java_lang_AssertionStatusDirectives::compute_offsets() {
4321 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4322 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4323 }
4324
4325 #if INCLUDE_CDS
4326 void java_lang_AssertionStatusDirectives::serialize(SerializeClosure* f) {
4327 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4328 }
4329 #endif
4330
4331 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4332 o->obj_field_put(classes_offset, val);
4333 }
4334
4335 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4336 o->obj_field_put(classEnabled_offset, val);
4337 }
4338
4339 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4340 o->obj_field_put(packages_offset, val);
4341 }
4342
4343 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4344 o->obj_field_put(packageEnabled_offset, val);
4345 }
4346
4347 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4348 o->bool_field_put(deflt_offset, val);
4349 }
4350
4351
4352 // Support for intrinsification of java.nio.Buffer.checkIndex
4353 int java_nio_Buffer::limit_offset() {
4354 return _limit_offset;
4355 }
4356
4357 #define BUFFER_FIELDS_DO(macro) \
4358 macro(_limit_offset, k, "limit", int_signature, false)
4359
4360 void java_nio_Buffer::compute_offsets() {
4361 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4362 assert(k != NULL, "must be loaded in 1.4+");
4363 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4364 }
4365
4366 #if INCLUDE_CDS
4367 void java_nio_Buffer::serialize(SerializeClosure* f) {
4368 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4369 }
4370 #endif
4371
4372 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
4373 if (_owner_offset != 0) return;
4374
4375 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
4376 InstanceKlass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
4377 compute_offset(_owner_offset, k,
4378 "exclusiveOwnerThread", vmSymbols::thread_signature());
4379 }
4380
4381 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4382 assert(_owner_offset != 0, "Must be initialized");
4383 return obj->obj_field(_owner_offset);
4384 }
4385
4386 static int member_offset(int hardcoded_offset) {
4387 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4388 }
4389
4390 // Compute hard-coded offsets
4391 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4392 // are not available to determine the offset_of_static_fields.
4393 void JavaClasses::compute_hard_coded_offsets() {
4394
4395 // java_lang_boxing_object
4396 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4397 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4398
4399 // java_lang_ref_Reference
4400 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4401 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4402 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4403 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4404 }
4405
4406
4407 // Compute non-hard-coded field offsets of all the classes in this file
4408 void JavaClasses::compute_offsets() {
4409 if (UseSharedSpaces) {
4410 return; // field offsets are loaded from archive
4411 }
4412
4413 // java_lang_Class::compute_offsets was called earlier in bootstrap
4414 java_lang_System::compute_offsets();
4415 java_lang_ClassLoader::compute_offsets();
4416 java_lang_Throwable::compute_offsets();
4417 java_lang_Thread::compute_offsets();
4418 java_lang_ThreadGroup::compute_offsets();
4419 java_lang_AssertionStatusDirectives::compute_offsets();
4420 java_lang_ref_SoftReference::compute_offsets();
4421 java_lang_invoke_MethodHandle::compute_offsets();
4422 java_lang_invoke_DirectMethodHandle::compute_offsets();
4423 java_lang_invoke_MemberName::compute_offsets();
4424 java_lang_invoke_ResolvedMethodName::compute_offsets();
4425 java_lang_invoke_LambdaForm::compute_offsets();
4426 java_lang_invoke_MethodType::compute_offsets();
4427 java_lang_invoke_CallSite::compute_offsets();
4428 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
4429 java_security_AccessControlContext::compute_offsets();
4430 // Initialize reflection classes. The layouts of these classes
4431 // changed with the new reflection implementation in JDK 1.4, and
4432 // since the Universe doesn't know what JDK version it is until this
4433 // point we defer computation of these offsets until now.
4434 java_lang_reflect_AccessibleObject::compute_offsets();
4435 java_lang_reflect_Method::compute_offsets();
4436 java_lang_reflect_Constructor::compute_offsets();
4437 java_lang_reflect_Field::compute_offsets();
4438 java_nio_Buffer::compute_offsets();
4439 reflect_ConstantPool::compute_offsets();
4440 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
4441 java_lang_reflect_Parameter::compute_offsets();
4442 java_lang_Module::compute_offsets();
4443 java_lang_StackTraceElement::compute_offsets();
4444 java_lang_StackFrameInfo::compute_offsets();
4445 java_lang_LiveStackFrameInfo::compute_offsets();
4446
4447 // generated interpreter code wants to know about the offsets we just computed:
4448 AbstractAssembler::update_delayed_values();
4449 }
4450
4451 #ifndef PRODUCT
4452
4453 // These functions exist to assert the validity of hard-coded field offsets to guard
4454 // against changes in the class files
4455
4456 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4457 EXCEPTION_MARK;
4458 fieldDescriptor fd;
4459 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
4460 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4461 InstanceKlass* ik = InstanceKlass::cast(k);
4462 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
4463 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
4464 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4465 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4466 return false;
4467 }
4468 if (fd.is_static()) {
4469 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4470 return false;
4471 }
4472 if (fd.offset() == hardcoded_offset ) {
4473 return true;
4474 } else {
4475 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4476 klass_name, field_name, hardcoded_offset, fd.offset());
4477 return false;
4478 }
4479 }
4480
4481 // Check the hard-coded field offsets of all the classes in this file
4482
4483 void JavaClasses::check_offsets() {
4484 bool valid = true;
4485
4486 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4487 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4488
4489 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4490 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4491
4492 // Boxed primitive objects (java_lang_boxing_object)
4493
4494 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4495 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4496 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4497 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4498 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4499 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4500 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4501 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4502
4503 // java.lang.ref.Reference
4504
4505 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4506 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4507 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4508 // Fake field
4509 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4510
4511 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4512 }
4513
4514 #endif // PRODUCT
4515
4516 int InjectedField::compute_offset() {
4517 InstanceKlass* ik = InstanceKlass::cast(klass());
4518 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4519 if (!may_be_java && !fs.access_flags().is_internal()) {
4520 // Only look at injected fields
4521 continue;
4522 }
4523 if (fs.name() == name() && fs.signature() == signature()) {
4524 return fs.offset();
4525 }
4526 }
4527 ResourceMark rm;
4528 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)" : "");
4529 #ifndef PRODUCT
4530 ik->print();
4531 tty->print_cr("all fields:");
4532 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4533 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4534 }
4535 #endif //PRODUCT
4536 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4537 return -1;
4538 }
4539
4540 void javaClasses_init() {
4541 JavaClasses::compute_offsets();
4542 JavaClasses::check_offsets();
4543 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4544 }