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