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