1 /*
2 * Copyright (c) 1997, 2012, 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/javaClasses.hpp"
28 #include "classfile/symbolTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/pcDesc.hpp"
32 #include "compiler/compilerOracle.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/fieldStreams.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceMirrorKlass.hpp"
40 #include "oops/klass.hpp"
41 #include "oops/method.hpp"
42 #include "oops/symbol.hpp"
43 #include "oops/typeArrayOop.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/java.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/thread.inline.hpp"
51 #include "runtime/vframe.hpp"
52 #include "utilities/preserveException.hpp"
53
54 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
55 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
56
57 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
58 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
59
60 InjectedField JavaClasses::_injected_fields[] = {
61 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
62 };
63
64 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
65 return _injected_fields[id].compute_offset();
66 }
67
68
69 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
70 *field_count = 0;
71
72 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
73 if (sid == vmSymbols::NO_SID) {
74 // Only well known classes can inject fields
75 return NULL;
76 }
77
78 int count = 0;
79 int start = -1;
80
81 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
82 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
83 count++; \
84 if (start == -1) start = klass##_##name##_enum; \
85 }
86 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
87 #undef LOOKUP_INJECTED_FIELD
88
89 if (start != -1) {
90 *field_count = count;
91 return _injected_fields + start;
92 }
93 return NULL;
94 }
95
96
97 static bool find_field(InstanceKlass* ik,
98 Symbol* name_symbol, Symbol* signature_symbol,
99 fieldDescriptor* fd,
100 bool allow_super = false) {
101 if (allow_super)
102 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
103 else
104 return ik->find_local_field(name_symbol, signature_symbol, fd);
105 }
106
107 // Helpful routine for computing field offsets at run time rather than hardcoding them
108 static void
109 compute_offset(int &dest_offset,
110 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
111 bool allow_super = false) {
112 fieldDescriptor fd;
113 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
114 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
115 ResourceMark rm;
116 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
117 #ifndef PRODUCT
118 klass_oop->print();
119 tty->print_cr("all fields:");
120 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
121 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
122 }
123 #endif //PRODUCT
124 fatal("Invalid layout of preloaded class");
125 }
126 dest_offset = fd.offset();
127 }
128
129 // Same as above but for "optional" offsets that might not be present in certain JDK versions
130 static void
131 compute_optional_offset(int& dest_offset,
132 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
133 bool allow_super = false) {
134 fieldDescriptor fd;
135 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
136 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
137 dest_offset = fd.offset();
138 }
139 }
140
141
142 int java_lang_String::value_offset = 0;
143 int java_lang_String::offset_offset = 0;
144 int java_lang_String::count_offset = 0;
145 int java_lang_String::hash_offset = 0;
146
147 bool java_lang_String::initialized = false;
148
149 void java_lang_String::compute_offsets() {
150 assert(!initialized, "offsets should be initialized only once");
151
152 Klass* k = SystemDictionary::String_klass();
153 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
154 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
155 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
156 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
157
158 initialized = true;
159 }
160
161 Handle java_lang_String::basic_create(int length, TRAPS) {
162 assert(initialized, "Must be initialized");
163 // Create the String object first, so there's a chance that the String
164 // and the char array it points to end up in the same cache line.
165 oop obj;
166 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
167
168 // Create the char array. The String object must be handlized here
169 // because GC can happen as a result of the allocation attempt.
170 Handle h_obj(THREAD, obj);
171 typeArrayOop buffer;
172 buffer = oopFactory::new_charArray(length, CHECK_NH);
173
174 // Point the String at the char array
175 obj = h_obj();
176 set_value(obj, buffer);
177 // No need to zero the offset, allocation zero'ed the entire String object
178 assert(offset(obj) == 0, "initial String offset should be zero");
179 //set_offset(obj, 0);
180 set_count(obj, length);
181
182 return h_obj;
183 }
184
185 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
186 Handle h_obj = basic_create(length, CHECK_NH);
187 typeArrayOop buffer = value(h_obj());
188 for (int index = 0; index < length; index++) {
189 buffer->char_at_put(index, unicode[index]);
190 }
191 return h_obj;
192 }
193
194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
195 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
196 return h_obj();
197 }
198
199 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
200 if (utf8_str == NULL) {
201 return Handle();
202 }
203 int length = UTF8::unicode_length(utf8_str);
204 Handle h_obj = basic_create(length, CHECK_NH);
205 if (length > 0) {
206 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
207 }
208 return h_obj;
209 }
210
211 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
212 Handle h_obj = create_from_str(utf8_str, CHECK_0);
213 return h_obj();
214 }
215
216 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
217 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
218 Handle h_obj = basic_create(length, CHECK_NH);
219 if (length > 0) {
220 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
221 }
222 return h_obj;
223 }
224
225 // Converts a C string to a Java String based on current encoding
226 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
227 assert(str != NULL, "bad arguments");
228
229 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
230 static to_java_string_fn_t _to_java_string_fn = NULL;
231
232 if (_to_java_string_fn == NULL) {
233 void *lib_handle = os::native_java_library();
234 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
235 if (_to_java_string_fn == NULL) {
236 fatal("NewStringPlatform missing");
237 }
238 }
239
240 jstring js = NULL;
241 { JavaThread* thread = (JavaThread*)THREAD;
242 assert(thread->is_Java_thread(), "must be java thread");
243 HandleMark hm(thread);
244 ThreadToNativeFromVM ttn(thread);
245 js = (_to_java_string_fn)(thread->jni_environment(), str);
246 }
247 return Handle(THREAD, JNIHandles::resolve(js));
248 }
249
250 // Converts a Java String to a native C string that can be used for
251 // native OS calls.
252 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
253
254 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
255 static to_platform_string_fn_t _to_platform_string_fn = NULL;
256
257 if (_to_platform_string_fn == NULL) {
258 void *lib_handle = os::native_java_library();
259 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
260 if (_to_platform_string_fn == NULL) {
261 fatal("GetStringPlatformChars missing");
262 }
263 }
264
265 char *native_platform_string;
266 { JavaThread* thread = (JavaThread*)THREAD;
267 assert(thread->is_Java_thread(), "must be java thread");
268 JNIEnv *env = thread->jni_environment();
269 jstring js = (jstring) JNIHandles::make_local(env, java_string());
270 bool is_copy;
271 HandleMark hm(thread);
272 ThreadToNativeFromVM ttn(thread);
273 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
274 assert(is_copy == JNI_TRUE, "is_copy value changed");
275 JNIHandles::destroy_local(js);
276 }
277 return native_platform_string;
278 }
279
280 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
281 oop obj = java_string();
282 // Typical usage is to convert all '/' to '.' in string.
283 typeArrayOop value = java_lang_String::value(obj);
284 int offset = java_lang_String::offset(obj);
285 int length = java_lang_String::length(obj);
286
287 // First check if any from_char exist
288 int index; // Declared outside, used later
289 for (index = 0; index < length; index++) {
290 if (value->char_at(index + offset) == from_char) {
291 break;
292 }
293 }
294 if (index == length) {
295 // No from_char, so do not copy.
296 return java_string;
297 }
298
299 // Create new UNICODE buffer. Must handlize value because GC
300 // may happen during String and char array creation.
301 typeArrayHandle h_value(THREAD, value);
302 Handle string = basic_create(length, CHECK_NH);
303
304 typeArrayOop from_buffer = h_value();
305 typeArrayOop to_buffer = java_lang_String::value(string());
306
307 // Copy contents
308 for (index = 0; index < length; index++) {
309 jchar c = from_buffer->char_at(index + offset);
310 if (c == from_char) {
311 c = to_char;
312 }
313 to_buffer->char_at_put(index, c);
314 }
315 return string;
316 }
317
318 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
319 typeArrayOop value = java_lang_String::value(java_string);
320 int offset = java_lang_String::offset(java_string);
321 length = java_lang_String::length(java_string);
322
323 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
324 for (int index = 0; index < length; index++) {
325 result[index] = value->char_at(index + offset);
326 }
327 return result;
328 }
329
330 unsigned int java_lang_String::hash_code(oop java_string) {
331 int length = java_lang_String::length(java_string);
332 // Zero length string will hash to zero with String.hashCode() function.
333 if (length == 0) return 0;
334
335 typeArrayOop value = java_lang_String::value(java_string);
336 int offset = java_lang_String::offset(java_string);
337 return java_lang_String::hash_code(value->char_at_addr(offset), length);
338 }
339
340 char* java_lang_String::as_quoted_ascii(oop java_string) {
341 typeArrayOop value = java_lang_String::value(java_string);
342 int offset = java_lang_String::offset(java_string);
343 int length = java_lang_String::length(java_string);
344
345 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
346 if (base == NULL) return NULL;
347
348 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
349 char* result = NEW_RESOURCE_ARRAY(char, result_length);
350 UNICODE::as_quoted_ascii(base, length, result, result_length);
351 assert(result_length >= length + 1, "must not be shorter");
352 assert(result_length == (int)strlen(result) + 1, "must match");
353 return result;
354 }
355
356 unsigned int java_lang_String::hash_string(oop java_string) {
357 int length = java_lang_String::length(java_string);
358 // Zero length string doesn't hash necessarily hash to zero.
359 if (length == 0) {
360 return StringTable::hash_string(NULL, 0);
361 }
362
363 typeArrayOop value = java_lang_String::value(java_string);
364 int offset = java_lang_String::offset(java_string);
365 return StringTable::hash_string(value->char_at_addr(offset), length);
366 }
367
368 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
369 oop obj = java_string();
370 typeArrayOop value = java_lang_String::value(obj);
371 int offset = java_lang_String::offset(obj);
372 int length = java_lang_String::length(obj);
373 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
374 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
375 return sym;
376 }
377
378 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
379 typeArrayOop value = java_lang_String::value(java_string);
380 int offset = java_lang_String::offset(java_string);
381 int length = java_lang_String::length(java_string);
382 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
383 return SymbolTable::probe_unicode(base, length);
384 }
385
386
387 int java_lang_String::utf8_length(oop java_string) {
388 typeArrayOop value = java_lang_String::value(java_string);
389 int offset = java_lang_String::offset(java_string);
390 int length = java_lang_String::length(java_string);
391 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
392 return UNICODE::utf8_length(position, length);
393 }
394
395 char* java_lang_String::as_utf8_string(oop java_string) {
396 typeArrayOop value = java_lang_String::value(java_string);
397 int offset = java_lang_String::offset(java_string);
398 int length = java_lang_String::length(java_string);
399 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
400 return UNICODE::as_utf8(position, length);
401 }
402
403 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
404 typeArrayOop value = java_lang_String::value(java_string);
405 int offset = java_lang_String::offset(java_string);
406 int length = java_lang_String::length(java_string);
407 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
408 return UNICODE::as_utf8(position, length, buf, buflen);
409 }
410
411 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
412 typeArrayOop value = java_lang_String::value(java_string);
413 int offset = java_lang_String::offset(java_string);
414 int length = java_lang_String::length(java_string);
415 assert(start + len <= length, "just checking");
416 jchar* position = value->char_at_addr(offset + start);
417 return UNICODE::as_utf8(position, len);
418 }
419
420 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
421 assert(java_string->klass() == SystemDictionary::String_klass(),
422 "must be java_string");
423 typeArrayOop value = java_lang_String::value(java_string);
424 int offset = java_lang_String::offset(java_string);
425 int length = java_lang_String::length(java_string);
426 if (length != len) {
427 return false;
428 }
429 for (int i = 0; i < len; i++) {
430 if (value->char_at(i + offset) != chars[i]) {
431 return false;
432 }
433 }
434 return true;
435 }
436
437 void java_lang_String::print(Handle java_string, outputStream* st) {
438 oop obj = java_string();
439 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
440 typeArrayOop value = java_lang_String::value(obj);
441 int offset = java_lang_String::offset(obj);
442 int length = java_lang_String::length(obj);
443
444 int end = MIN2(length, 100);
445 if (value == NULL) {
446 // This can happen if, e.g., printing a String
447 // object before its initializer has been called
448 st->print_cr("NULL");
449 } else {
450 st->print("\"");
451 for (int index = 0; index < length; index++) {
452 st->print("%c", value->char_at(index + offset));
453 }
454 st->print("\"");
455 }
456 }
457
458 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
459 Handle mirror (THREAD, fd->field_holder()->java_mirror());
460 assert(mirror.not_null() && fd->is_static(), "just checking");
461 if (fd->has_initial_value()) {
462 BasicType t = fd->field_type();
463 switch (t) {
464 case T_BYTE:
465 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
466 break;
467 case T_BOOLEAN:
468 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
469 break;
470 case T_CHAR:
471 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
472 break;
473 case T_SHORT:
474 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
475 break;
476 case T_INT:
477 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
478 break;
479 case T_FLOAT:
480 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
481 break;
482 case T_DOUBLE:
483 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
484 break;
485 case T_LONG:
486 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
487 break;
488 case T_OBJECT:
489 {
490 #ifdef ASSERT
491 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
492 assert(fd->signature() == sym, "just checking");
493 #endif
494 oop string = fd->string_initial_value(CHECK);
495 mirror()->obj_field_put(fd->offset(), string);
496 }
497 break;
498 default:
499 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
500 "Illegal ConstantValue attribute in class file");
501 }
502 }
503 }
504
505
506 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
507 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
508
509 // If the offset was read from the shared archive, it was fixed up already
510 if (!k->is_shared()) {
511 if (k->oop_is_instance()) {
512 // During bootstrap, java.lang.Class wasn't loaded so static field
513 // offsets were computed without the size added it. Go back and
514 // update all the static field offsets to included the size.
515 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
516 if (fs.access_flags().is_static()) {
517 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
518 fs.set_offset(real_offset);
519 }
520 }
521 }
522 }
523 create_mirror(k, CHECK);
524 }
525
526 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
527 assert(k->java_mirror() == NULL, "should only assign mirror once");
528 // Use this moment of initialization to cache modifier_flags also,
529 // to support Class.getModifiers(). Instance classes recalculate
530 // the cached flags after the class file is parsed, but before the
531 // class is put into the system dictionary.
532 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
533 k->set_modifier_flags(computed_modifiers);
534 // Class_klass has to be loaded because it is used to allocate
535 // the mirror.
536 if (SystemDictionary::Class_klass_loaded()) {
537 // Allocate mirror (java.lang.Class instance)
538 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
539
540 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
541 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
542
543 // It might also have a component mirror. This mirror must already exist.
544 if (k->oop_is_array()) {
545 Handle comp_mirror;
546 if (k->oop_is_typeArray()) {
547 BasicType type = TypeArrayKlass::cast(k())->element_type();
548 comp_mirror = Universe::java_mirror(type);
549 } else {
550 assert(k->oop_is_objArray(), "Must be");
551 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
552 assert(element_klass != NULL, "Must have an element klass");
553 comp_mirror = element_klass->java_mirror();
554 }
555 assert(comp_mirror.not_null(), "must have a mirror");
556
557 // Two-way link between the array klass and its component mirror:
558 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
559 set_array_klass(comp_mirror(), k());
560 } else {
561 assert(k->oop_is_instance(), "Must be");
562 // Initialize static fields
563 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
564 }
565 return mirror();
566 } else {
567 if (fixup_mirror_list() == NULL) {
568 GrowableArray<Klass*>* list =
569 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
570 set_fixup_mirror_list(list);
571 }
572 fixup_mirror_list()->push(k());
573 return NULL;
574 }
575 }
576
577
578
579 int java_lang_Class::oop_size(oop java_class) {
580 assert(_oop_size_offset != 0, "must be set");
581 return java_class->int_field(_oop_size_offset);
582 }
583 void java_lang_Class::set_oop_size(oop java_class, int size) {
584 assert(_oop_size_offset != 0, "must be set");
585 java_class->int_field_put(_oop_size_offset, size);
586 }
587 int java_lang_Class::static_oop_field_count(oop java_class) {
588 assert(_static_oop_field_count_offset != 0, "must be set");
589 return java_class->int_field(_static_oop_field_count_offset);
590 }
591 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
592 assert(_static_oop_field_count_offset != 0, "must be set");
593 java_class->int_field_put(_static_oop_field_count_offset, size);
594 }
595
596 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
597 // This should be improved by adding a field at the Java level or by
598 // introducing a new VM klass (see comment in ClassFileParser)
599 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
600 if (type != T_VOID) {
601 Klass* aklass = Universe::typeArrayKlassObj(type);
602 assert(aklass != NULL, "correct bootstrap");
603 set_array_klass(java_class, aklass);
604 }
605 #ifdef ASSERT
606 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
607 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
608 #endif
609 return java_class;
610 }
611
612
613 Klass* java_lang_Class::as_Klass(oop java_class) {
614 //%note memory_2
615 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
616 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
617 assert(k == NULL || k->is_klass(), "type check");
618 return k;
619 }
620
621
622 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
623 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
624 java_class->metadata_field_put(_klass_offset, klass);
625 }
626
627
628 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
629 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
630 Symbol* name = NULL;
631 bool is_instance = false;
632 if (is_primitive(java_class)) {
633 name = vmSymbols::type_signature(primitive_type(java_class));
634 } else {
635 Klass* k = as_Klass(java_class);
636 is_instance = k->oop_is_instance();
637 name = k->name();
638 }
639 if (name == NULL) {
640 st->print("<null>");
641 return;
642 }
643 if (is_instance) st->print("L");
644 st->write((char*) name->base(), (int) name->utf8_length());
645 if (is_instance) st->print(";");
646 }
647
648 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
649 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
650 Symbol* name;
651 if (is_primitive(java_class)) {
652 name = vmSymbols::type_signature(primitive_type(java_class));
653 // Because this can create a new symbol, the caller has to decrement
654 // the refcount, so make adjustment here and below for symbols returned
655 // that are not created or incremented due to a successful lookup.
656 name->increment_refcount();
657 } else {
658 Klass* k = as_Klass(java_class);
659 if (!k->oop_is_instance()) {
660 name = k->name();
661 name->increment_refcount();
662 } else {
663 ResourceMark rm;
664 const char* sigstr = k->signature_name();
665 int siglen = (int) strlen(sigstr);
666 if (!intern_if_not_found) {
667 name = SymbolTable::probe(sigstr, siglen);
668 } else {
669 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
670 }
671 }
672 }
673 return name;
674 }
675
676
677 Klass* java_lang_Class::array_klass(oop java_class) {
678 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
679 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass");
680 return k;
681 }
682
683
684 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
685 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass");
686 java_class->metadata_field_put(_array_klass_offset, klass);
687 }
688
689
690 Method* java_lang_Class::resolved_constructor(oop java_class) {
691 Metadata* constructor = java_class->metadata_field(_resolved_constructor_offset);
692 assert(constructor == NULL || constructor->is_method(), "should be method");
693 return ((Method*)constructor);
694 }
695
696
697 void java_lang_Class::set_resolved_constructor(oop java_class, Method* constructor) {
698 assert(constructor->is_method(), "should be method");
699 java_class->metadata_field_put(_resolved_constructor_offset, constructor);
700 }
701
702
703 bool java_lang_Class::is_primitive(oop java_class) {
704 // should assert:
705 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
706 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
707
708 #ifdef ASSERT
709 if (is_primitive) {
710 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
711 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
712 "Should be either the T_VOID primitive or a java primitive");
713 }
714 #endif
715
716 return is_primitive;
717 }
718
719
720 BasicType java_lang_Class::primitive_type(oop java_class) {
721 assert(java_lang_Class::is_primitive(java_class), "just checking");
722 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
723 BasicType type = T_VOID;
724 if (ak != NULL) {
725 // Note: create_basic_type_mirror above initializes ak to a non-null value.
726 type = ArrayKlass::cast(ak)->element_type();
727 } else {
728 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
729 }
730 assert(Universe::java_mirror(type) == java_class, "must be consistent");
731 return type;
732 }
733
734 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
735 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
736 if (is_primitive(java_class)) {
737 if (reference_klass != NULL)
738 (*reference_klass) = NULL;
739 return primitive_type(java_class);
740 } else {
741 if (reference_klass != NULL)
742 (*reference_klass) = as_Klass(java_class);
743 return T_OBJECT;
744 }
745 }
746
747
748 oop java_lang_Class::primitive_mirror(BasicType t) {
749 oop mirror = Universe::java_mirror(t);
750 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
751 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
752 return mirror;
753 }
754
755 bool java_lang_Class::offsets_computed = false;
756 int java_lang_Class::classRedefinedCount_offset = -1;
757
758 void java_lang_Class::compute_offsets() {
759 assert(!offsets_computed, "offsets should be initialized only once");
760 offsets_computed = true;
761
762 Klass* klass_oop = SystemDictionary::Class_klass();
763 // The classRedefinedCount field is only present starting in 1.5,
764 // so don't go fatal.
765 compute_optional_offset(classRedefinedCount_offset,
766 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
767
768 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
769 }
770
771 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
772 if (!JDK_Version::is_gte_jdk15x_version()
773 || classRedefinedCount_offset == -1) {
774 // The classRedefinedCount field is only present starting in 1.5.
775 // If we don't have an offset for it then just return -1 as a marker.
776 return -1;
777 }
778
779 return the_class_mirror->int_field(classRedefinedCount_offset);
780 }
781
782 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
783 if (!JDK_Version::is_gte_jdk15x_version()
784 || classRedefinedCount_offset == -1) {
785 // The classRedefinedCount field is only present starting in 1.5.
786 // If we don't have an offset for it then nothing to set.
787 return;
788 }
789
790 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
791 }
792
793
794 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
795 // platform thread structure, and a eetop offset which was used for thread
796 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
797 // merged, so in the HotSpot VM we just use the eetop field for the thread
798 // instead of the privateInfo_offset.
799 //
800 // Note: The stackSize field is only present starting in 1.4.
801
802 int java_lang_Thread::_name_offset = 0;
803 int java_lang_Thread::_group_offset = 0;
804 int java_lang_Thread::_contextClassLoader_offset = 0;
805 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
806 int java_lang_Thread::_priority_offset = 0;
807 int java_lang_Thread::_eetop_offset = 0;
808 int java_lang_Thread::_daemon_offset = 0;
809 int java_lang_Thread::_stillborn_offset = 0;
810 int java_lang_Thread::_stackSize_offset = 0;
811 int java_lang_Thread::_tid_offset = 0;
812 int java_lang_Thread::_thread_status_offset = 0;
813 int java_lang_Thread::_park_blocker_offset = 0;
814 int java_lang_Thread::_park_event_offset = 0 ;
815
816
817 void java_lang_Thread::compute_offsets() {
818 assert(_group_offset == 0, "offsets should be initialized only once");
819
820 Klass* k = SystemDictionary::Thread_klass();
821 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
822 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
823 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
824 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
825 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
826 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
827 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
828 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
829 // The stackSize field is only present starting in 1.4, so don't go fatal.
830 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
831 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
832 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
833 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
834 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
835 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
836 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
837 vmSymbols::long_signature());
838 }
839
840
841 JavaThread* java_lang_Thread::thread(oop java_thread) {
842 return (JavaThread*)java_thread->address_field(_eetop_offset);
843 }
844
845
846 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
847 java_thread->address_field_put(_eetop_offset, (address)thread);
848 }
849
850
851 typeArrayOop java_lang_Thread::name(oop java_thread) {
852 oop name = java_thread->obj_field(_name_offset);
853 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
854 return typeArrayOop(name);
855 }
856
857
858 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
859 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
860 java_thread->obj_field_put(_name_offset, name);
861 }
862
863
864 ThreadPriority java_lang_Thread::priority(oop java_thread) {
865 return (ThreadPriority)java_thread->int_field(_priority_offset);
866 }
867
868
869 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
870 java_thread->int_field_put(_priority_offset, priority);
871 }
872
873
874 oop java_lang_Thread::threadGroup(oop java_thread) {
875 return java_thread->obj_field(_group_offset);
876 }
877
878
879 bool java_lang_Thread::is_stillborn(oop java_thread) {
880 return java_thread->bool_field(_stillborn_offset) != 0;
881 }
882
883
884 // We never have reason to turn the stillborn bit off
885 void java_lang_Thread::set_stillborn(oop java_thread) {
886 java_thread->bool_field_put(_stillborn_offset, true);
887 }
888
889
890 bool java_lang_Thread::is_alive(oop java_thread) {
891 JavaThread* thr = java_lang_Thread::thread(java_thread);
892 return (thr != NULL);
893 }
894
895
896 bool java_lang_Thread::is_daemon(oop java_thread) {
897 return java_thread->bool_field(_daemon_offset) != 0;
898 }
899
900
901 void java_lang_Thread::set_daemon(oop java_thread) {
902 java_thread->bool_field_put(_daemon_offset, true);
903 }
904
905 oop java_lang_Thread::context_class_loader(oop java_thread) {
906 return java_thread->obj_field(_contextClassLoader_offset);
907 }
908
909 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
910 return java_thread->obj_field(_inheritedAccessControlContext_offset);
911 }
912
913
914 jlong java_lang_Thread::stackSize(oop java_thread) {
915 // The stackSize field is only present starting in 1.4
916 if (_stackSize_offset > 0) {
917 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
918 return java_thread->long_field(_stackSize_offset);
919 } else {
920 return 0;
921 }
922 }
923
924 // Write the thread status value to threadStatus field in java.lang.Thread java class.
925 void java_lang_Thread::set_thread_status(oop java_thread,
926 java_lang_Thread::ThreadStatus status) {
927 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
928 // The threadStatus is only present starting in 1.5
929 if (_thread_status_offset > 0) {
930 java_thread->int_field_put(_thread_status_offset, status);
931 }
932 }
933
934 // Read thread status value from threadStatus field in java.lang.Thread java class.
935 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
936 assert(Thread::current()->is_VM_thread() ||
937 JavaThread::current()->thread_state() == _thread_in_vm,
938 "Java Thread is not running in vm");
939 // The threadStatus is only present starting in 1.5
940 if (_thread_status_offset > 0) {
941 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
942 } else {
943 // All we can easily figure out is if it is alive, but that is
944 // enough info for a valid unknown status.
945 // These aren't restricted to valid set ThreadStatus values, so
946 // use JVMTI values and cast.
947 JavaThread* thr = java_lang_Thread::thread(java_thread);
948 if (thr == NULL) {
949 // the thread hasn't run yet or is in the process of exiting
950 return NEW;
951 }
952 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
953 }
954 }
955
956
957 jlong java_lang_Thread::thread_id(oop java_thread) {
958 // The thread ID field is only present starting in 1.5
959 if (_tid_offset > 0) {
960 return java_thread->long_field(_tid_offset);
961 } else {
962 return 0;
963 }
964 }
965
966 oop java_lang_Thread::park_blocker(oop java_thread) {
967 assert(JDK_Version::current().supports_thread_park_blocker() &&
968 _park_blocker_offset != 0, "Must support parkBlocker field");
969
970 if (_park_blocker_offset > 0) {
971 return java_thread->obj_field(_park_blocker_offset);
972 }
973
974 return NULL;
975 }
976
977 jlong java_lang_Thread::park_event(oop java_thread) {
978 if (_park_event_offset > 0) {
979 return java_thread->long_field(_park_event_offset);
980 }
981 return 0;
982 }
983
984 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
985 if (_park_event_offset > 0) {
986 java_thread->long_field_put(_park_event_offset, ptr);
987 return true;
988 }
989 return false;
990 }
991
992
993 const char* java_lang_Thread::thread_status_name(oop java_thread) {
994 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
995 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
996 switch (status) {
997 case NEW : return "NEW";
998 case RUNNABLE : return "RUNNABLE";
999 case SLEEPING : return "TIMED_WAITING (sleeping)";
1000 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1001 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1002 case PARKED : return "WAITING (parking)";
1003 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1004 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1005 case TERMINATED : return "TERMINATED";
1006 default : return "UNKNOWN";
1007 };
1008 }
1009 int java_lang_ThreadGroup::_parent_offset = 0;
1010 int java_lang_ThreadGroup::_name_offset = 0;
1011 int java_lang_ThreadGroup::_threads_offset = 0;
1012 int java_lang_ThreadGroup::_groups_offset = 0;
1013 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1014 int java_lang_ThreadGroup::_destroyed_offset = 0;
1015 int java_lang_ThreadGroup::_daemon_offset = 0;
1016 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1017 int java_lang_ThreadGroup::_nthreads_offset = 0;
1018 int java_lang_ThreadGroup::_ngroups_offset = 0;
1019
1020 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1021 assert(java_thread_group->is_oop(), "thread group must be oop");
1022 return java_thread_group->obj_field(_parent_offset);
1023 }
1024
1025 // ("name as oop" accessor is not necessary)
1026
1027 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1028 oop name = java_thread_group->obj_field(_name_offset);
1029 // ThreadGroup.name can be null
1030 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1031 }
1032
1033 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1034 assert(java_thread_group->is_oop(), "thread group must be oop");
1035 return java_thread_group->int_field(_nthreads_offset);
1036 }
1037
1038 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1039 oop threads = java_thread_group->obj_field(_threads_offset);
1040 assert(threads != NULL, "threadgroups should have threads");
1041 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1042 return objArrayOop(threads);
1043 }
1044
1045 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1046 assert(java_thread_group->is_oop(), "thread group must be oop");
1047 return java_thread_group->int_field(_ngroups_offset);
1048 }
1049
1050 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1051 oop groups = java_thread_group->obj_field(_groups_offset);
1052 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1053 return objArrayOop(groups);
1054 }
1055
1056 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1057 assert(java_thread_group->is_oop(), "thread group must be oop");
1058 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1059 }
1060
1061 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1062 assert(java_thread_group->is_oop(), "thread group must be oop");
1063 return java_thread_group->bool_field(_destroyed_offset) != 0;
1064 }
1065
1066 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1067 assert(java_thread_group->is_oop(), "thread group must be oop");
1068 return java_thread_group->bool_field(_daemon_offset) != 0;
1069 }
1070
1071 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1072 assert(java_thread_group->is_oop(), "thread group must be oop");
1073 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1074 }
1075
1076 void java_lang_ThreadGroup::compute_offsets() {
1077 assert(_parent_offset == 0, "offsets should be initialized only once");
1078
1079 Klass* k = SystemDictionary::ThreadGroup_klass();
1080
1081 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1082 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1083 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1084 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1085 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1086 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1087 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1088 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1089 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1090 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1091 }
1092
1093 oop java_lang_Throwable::unassigned_stacktrace() {
1094 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1095 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1096 if (UseCompressedOops) {
1097 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1098 } else {
1099 return oopDesc::load_decode_heap_oop((oop*)addr);
1100 }
1101 }
1102
1103 oop java_lang_Throwable::backtrace(oop throwable) {
1104 return throwable->obj_field_acquire(backtrace_offset);
1105 }
1106
1107
1108 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1109 throwable->release_obj_field_put(backtrace_offset, value);
1110 }
1111
1112
1113 oop java_lang_Throwable::message(oop throwable) {
1114 return throwable->obj_field(detailMessage_offset);
1115 }
1116
1117
1118 oop java_lang_Throwable::message(Handle throwable) {
1119 return throwable->obj_field(detailMessage_offset);
1120 }
1121
1122
1123 void java_lang_Throwable::set_message(oop throwable, oop value) {
1124 throwable->obj_field_put(detailMessage_offset, value);
1125 }
1126
1127
1128 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1129 throwable->obj_field_put(stackTrace_offset, st_element_array);
1130 }
1131
1132 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1133 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1134 set_stacktrace(throwable, NULL);
1135 }
1136
1137
1138 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1139 ResourceMark rm;
1140 Klass* k = throwable->klass();
1141 assert(k != NULL, "just checking");
1142 st->print("%s", InstanceKlass::cast(k)->external_name());
1143 oop msg = message(throwable);
1144 if (msg != NULL) {
1145 st->print(": %s", java_lang_String::as_utf8_string(msg));
1146 }
1147 }
1148
1149
1150 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1151 ResourceMark rm;
1152 Klass* k = throwable->klass();
1153 assert(k != NULL, "just checking");
1154 st->print("%s", InstanceKlass::cast(k)->external_name());
1155 oop msg = message(throwable);
1156 if (msg != NULL) {
1157 st->print(": %s", java_lang_String::as_utf8_string(msg));
1158 }
1159 }
1160
1161 // Print stack trace element to resource allocated buffer
1162 char* java_lang_Throwable::print_stack_element_to_buffer(Method* method, int bci) {
1163 // Get strings and string lengths
1164 InstanceKlass* klass = method->method_holder();
1165 const char* klass_name = klass->external_name();
1166 int buf_len = (int)strlen(klass_name);
1167 char* source_file_name;
1168 if (klass->source_file_name() == NULL) {
1169 source_file_name = NULL;
1170 } else {
1171 source_file_name = klass->source_file_name()->as_C_string();
1172 buf_len += (int)strlen(source_file_name);
1173 }
1174 char* method_name = method->name()->as_C_string();
1175 buf_len += (int)strlen(method_name);
1176
1177 // Allocate temporary buffer with extra space for formatting and line number
1178 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1179
1180 // Print stack trace line in buffer
1181 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1182 if (method->is_native()) {
1183 strcat(buf, "(Native Method)");
1184 } else {
1185 int line_number = method->line_number_from_bci(bci);
1186 if (source_file_name != NULL && (line_number != -1)) {
1187 // Sourcename and linenumber
1188 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1189 } else if (source_file_name != NULL) {
1190 // Just sourcename
1191 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1192 } else {
1193 // Neither soucename and linenumber
1194 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1195 }
1196 nmethod* nm = method->code();
1197 if (WizardMode && nm != NULL) {
1198 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1199 }
1200 }
1201
1202 return buf;
1203 }
1204
1205
1206 void java_lang_Throwable::print_stack_element(Handle stream, Method* method, int bci) {
1207 ResourceMark rm;
1208 char* buf = print_stack_element_to_buffer(method, bci);
1209 print_to_stream(stream, buf);
1210 }
1211
1212 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
1213 ResourceMark rm;
1214 char* buf = print_stack_element_to_buffer(method, bci);
1215 st->print_cr("%s", buf);
1216 }
1217
1218 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1219 if (stream.is_null()) {
1220 tty->print_cr("%s", str);
1221 } else {
1222 EXCEPTION_MARK;
1223 JavaValue result(T_VOID);
1224 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1225 if (!HAS_PENDING_EXCEPTION) {
1226 JavaCalls::call_virtual(&result,
1227 stream,
1228 KlassHandle(THREAD, stream->klass()),
1229 vmSymbols::println_name(),
1230 vmSymbols::char_array_void_signature(),
1231 arg,
1232 THREAD);
1233 }
1234 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1235 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1236 }
1237
1238 }
1239
1240
1241 const char* java_lang_Throwable::no_stack_trace_message() {
1242 return "\t<<no stack trace available>>";
1243 }
1244
1245
1246 // Currently used only for exceptions occurring during startup
1247 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1248 Thread *THREAD = Thread::current();
1249 Handle h_throwable(THREAD, throwable);
1250 while (h_throwable.not_null()) {
1251 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1252 if (result.is_null()) {
1253 st->print_cr(no_stack_trace_message());
1254 return;
1255 }
1256
1257 while (result.not_null()) {
1258 typeArrayHandle methods (THREAD,
1259 typeArrayOop(result->obj_at(trace_methods_offset)));
1260 typeArrayHandle bcis (THREAD,
1261 typeArrayOop(result->obj_at(trace_bcis_offset)));
1262
1263 if (methods.is_null() || bcis.is_null()) {
1264 st->print_cr(no_stack_trace_message());
1265 return;
1266 }
1267
1268 int length = methods()->length();
1269 for (int index = 0; index < length; index++) {
1270 Method* method = ((Method*)methods()->metadata_at(index));
1271 if (method == NULL) goto handle_cause;
1272 int bci = bcis->ushort_at(index);
1273 print_stack_element(st, method, bci);
1274 }
1275 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1276 }
1277 handle_cause:
1278 {
1279 EXCEPTION_MARK;
1280 JavaValue result(T_OBJECT);
1281 JavaCalls::call_virtual(&result,
1282 h_throwable,
1283 KlassHandle(THREAD, h_throwable->klass()),
1284 vmSymbols::getCause_name(),
1285 vmSymbols::void_throwable_signature(),
1286 THREAD);
1287 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1288 if (HAS_PENDING_EXCEPTION) {
1289 CLEAR_PENDING_EXCEPTION;
1290 h_throwable = Handle();
1291 } else {
1292 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1293 if (h_throwable.not_null()) {
1294 st->print("Caused by: ");
1295 print(h_throwable, st);
1296 st->cr();
1297 }
1298 }
1299 }
1300 }
1301 }
1302
1303
1304 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1305 // Note: this is no longer used in Merlin, but we support it for compatibility.
1306 Thread *thread = Thread::current();
1307 Handle stream(thread, print_stream);
1308 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1309 if (result.is_null()) {
1310 print_to_stream(stream, no_stack_trace_message());
1311 return;
1312 }
1313
1314 while (result.not_null()) {
1315 typeArrayHandle methods(thread,
1316 typeArrayOop(result->obj_at(trace_methods_offset)));
1317 typeArrayHandle bcis (thread,
1318 typeArrayOop(result->obj_at(trace_bcis_offset)));
1319
1320 if (methods.is_null() || bcis.is_null()) {
1321 print_to_stream(stream, no_stack_trace_message());
1322 return;
1323 }
1324
1325 int length = methods()->length();
1326 for (int index = 0; index < length; index++) {
1327 Method* method = ((Method*)methods()->metadata_at(index));
1328 if (method == NULL) return;
1329 int bci = bcis->ushort_at(index);
1330 print_stack_element(stream, method, bci);
1331 }
1332 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1333 }
1334 }
1335
1336 // This class provides a simple wrapper over the internal structure of
1337 // exception backtrace to insulate users of the backtrace from needing
1338 // to know what it looks like.
1339 class BacktraceBuilder: public StackObj {
1340 private:
1341 Handle _backtrace;
1342 objArrayOop _head;
1343 typeArrayOop _methods;
1344 typeArrayOop _bcis;
1345 objArrayOop _mirrors;
1346 int _index;
1347 No_Safepoint_Verifier _nsv;
1348
1349 public:
1350
1351 enum {
1352 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1353 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1354 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1355 trace_next_offset = java_lang_Throwable::trace_next_offset,
1356 trace_size = java_lang_Throwable::trace_size,
1357 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1358 };
1359
1360 // constructor for new backtrace
1361 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1362 expand(CHECK);
1363 _backtrace = _head;
1364 _index = 0;
1365 }
1366
1367 void expand(TRAPS) {
1368 objArrayHandle old_head(THREAD, _head);
1369 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1370
1371 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1372 objArrayHandle new_head(THREAD, head);
1373
1374 typeArrayOop methods = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1375 typeArrayHandle new_methods(THREAD, methods);
1376
1377 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1378 typeArrayHandle new_bcis(THREAD, bcis);
1379
1380 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1381 objArrayHandle new_mirrors(THREAD, mirrors);
1382
1383 if (!old_head.is_null()) {
1384 old_head->obj_at_put(trace_next_offset, new_head());
1385 }
1386 new_head->obj_at_put(trace_methods_offset, new_methods());
1387 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1388 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1389
1390 _head = new_head();
1391 _methods = new_methods();
1392 _bcis = new_bcis();
1393 _mirrors = new_mirrors();
1394 _index = 0;
1395 }
1396
1397 oop backtrace() {
1398 return _backtrace();
1399 }
1400
1401 inline void push(Method* method, int bci, TRAPS) {
1402 // Smear the -1 bci to 0 since the array only holds unsigned
1403 // shorts. The later line number lookup would just smear the -1
1404 // to a 0 even if it could be recorded.
1405 if (bci == SynchronizationEntryBCI) bci = 0;
1406 assert(bci == (jushort)bci, "doesn't fit");
1407
1408 if (_index >= trace_chunk_size) {
1409 methodHandle mhandle(THREAD, method);
1410 expand(CHECK);
1411 method = mhandle();
1412 }
1413
1414 _methods->metadata_at_put(_index, method);
1415 _bcis->ushort_at_put(_index, bci);
1416 // we need to save the mirrors in the backtrace to keep the methods from
1417 // being unloaded if their class loader is unloaded while we still have
1418 // this stack trace.
1419 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1420 _index++;
1421 }
1422
1423 Method* current_method() {
1424 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1425 return ((Method*)_methods->metadata_at(_index));
1426 }
1427
1428 jushort current_bci() {
1429 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1430 return _bcis->ushort_at(_index);
1431 }
1432 };
1433
1434
1435 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1436 if (!StackTraceInThrowable) return;
1437 ResourceMark rm(THREAD);
1438
1439 // Start out by clearing the backtrace for this object, in case the VM
1440 // runs out of memory while allocating the stack trace
1441 set_backtrace(throwable(), NULL);
1442 if (JDK_Version::is_gte_jdk14x_version()) {
1443 // New since 1.4, clear lazily constructed Java level stacktrace if
1444 // refilling occurs
1445 // This is unnecessary in 1.7+ but harmless
1446 clear_stacktrace(throwable());
1447 }
1448
1449 int max_depth = MaxJavaStackTraceDepth;
1450 JavaThread* thread = (JavaThread*)THREAD;
1451 BacktraceBuilder bt(CHECK);
1452
1453 // If there is no Java frame just return the method that was being called
1454 // with bci 0
1455 if (!thread->has_last_Java_frame()) {
1456 if (max_depth >= 1 && method() != NULL) {
1457 bt.push(method(), 0, CHECK);
1458 set_backtrace(throwable(), bt.backtrace());
1459 }
1460 return;
1461 }
1462
1463 // Instead of using vframe directly, this version of fill_in_stack_trace
1464 // basically handles everything by hand. This significantly improved the
1465 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1466 // See bug 6333838 for more details.
1467 // The "ASSERT" here is to verify this method generates the exactly same stack
1468 // trace as utilizing vframe.
1469 #ifdef ASSERT
1470 vframeStream st(thread);
1471 methodHandle st_method(THREAD, st.method());
1472 #endif
1473 int total_count = 0;
1474 RegisterMap map(thread, false);
1475 int decode_offset = 0;
1476 nmethod* nm = NULL;
1477 bool skip_fillInStackTrace_check = false;
1478 bool skip_throwableInit_check = false;
1479 bool skip_hidden = !ShowHiddenFrames;
1480
1481 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1482 Method* method = NULL;
1483 int bci = 0;
1484
1485 // Compiled java method case.
1486 if (decode_offset != 0) {
1487 DebugInfoReadStream stream(nm, decode_offset);
1488 decode_offset = stream.read_int();
1489 method = (Method*)nm->metadata_at(stream.read_int());
1490 bci = stream.read_bci();
1491 } else {
1492 if (fr.is_first_frame()) break;
1493 address pc = fr.pc();
1494 if (fr.is_interpreted_frame()) {
1495 intptr_t bcx = fr.interpreter_frame_bcx();
1496 method = fr.interpreter_frame_method();
1497 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1498 fr = fr.sender(&map);
1499 } else {
1500 CodeBlob* cb = fr.cb();
1501 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1502 // but non nmethod
1503 fr = fr.sender(&map);
1504 if (cb == NULL || !cb->is_nmethod()) {
1505 continue;
1506 }
1507 nm = (nmethod*)cb;
1508 if (nm->method()->is_native()) {
1509 method = nm->method();
1510 bci = 0;
1511 } else {
1512 PcDesc* pd = nm->pc_desc_at(pc);
1513 decode_offset = pd->scope_decode_offset();
1514 // if decode_offset is not equal to 0, it will execute the
1515 // "compiled java method case" at the beginning of the loop.
1516 continue;
1517 }
1518 }
1519 }
1520 #ifdef ASSERT
1521 assert(st_method() == method && st.bci() == bci,
1522 "Wrong stack trace");
1523 st.next();
1524 // vframeStream::method isn't GC-safe so store off a copy
1525 // of the Method* in case we GC.
1526 if (!st.at_end()) {
1527 st_method = st.method();
1528 }
1529 #endif
1530
1531 // the format of the stacktrace will be:
1532 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1533 // - 0 or more <init> methods for the exception class (skipped)
1534 // - rest of the stack
1535
1536 if (!skip_fillInStackTrace_check) {
1537 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1538 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1539 throwable->is_a(method->method_holder())) {
1540 continue;
1541 }
1542 else {
1543 skip_fillInStackTrace_check = true; // gone past them all
1544 }
1545 }
1546 if (!skip_throwableInit_check) {
1547 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1548
1549 // skip <init> methods of the exception class and superclasses
1550 // This is simlar to classic VM.
1551 if (method->name() == vmSymbols::object_initializer_name() &&
1552 throwable->is_a(method->method_holder())) {
1553 continue;
1554 } else {
1555 // there are none or we've seen them all - either way stop checking
1556 skip_throwableInit_check = true;
1557 }
1558 }
1559 if (method->is_hidden()) {
1560 if (skip_hidden) continue;
1561 }
1562 bt.push(method, bci, CHECK);
1563 total_count++;
1564 }
1565
1566 // Put completed stack trace into throwable object
1567 set_backtrace(throwable(), bt.backtrace());
1568 }
1569
1570 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1571 // No-op if stack trace is disabled
1572 if (!StackTraceInThrowable) {
1573 return;
1574 }
1575
1576 // Disable stack traces for some preallocated out of memory errors
1577 if (!Universe::should_fill_in_stack_trace(throwable)) {
1578 return;
1579 }
1580
1581 PRESERVE_EXCEPTION_MARK;
1582
1583 JavaThread* thread = JavaThread::active();
1584 fill_in_stack_trace(throwable, method, thread);
1585 // ignore exceptions thrown during stack trace filling
1586 CLEAR_PENDING_EXCEPTION;
1587 }
1588
1589 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1590 // Allocate stack trace - backtrace is created but not filled in
1591
1592 // No-op if stack trace is disabled
1593 if (!StackTraceInThrowable) return;
1594
1595 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1596 objArrayHandle backtrace (THREAD, h_oop);
1597 typeArrayOop m_oop = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1598 typeArrayHandle methods (THREAD, m_oop);
1599 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1600 typeArrayHandle bcis(THREAD, b);
1601 objArrayOop mirror_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1602 objArrayHandle mirrors (THREAD, mirror_oop);
1603
1604 // backtrace has space for one chunk (next is NULL)
1605 backtrace->obj_at_put(trace_methods_offset, methods());
1606 backtrace->obj_at_put(trace_bcis_offset, bcis());
1607 backtrace->obj_at_put(trace_mirrors_offset, mirrors());
1608 set_backtrace(throwable(), backtrace());
1609 }
1610
1611
1612 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1613 // Fill in stack trace into preallocated backtrace (no GC)
1614
1615 // No-op if stack trace is disabled
1616 if (!StackTraceInThrowable) return;
1617
1618 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1619
1620 objArrayOop backtrace = (objArrayOop)java_lang_Throwable::backtrace(throwable());
1621 assert(backtrace != NULL, "backtrace not preallocated");
1622
1623 oop m = backtrace->obj_at(trace_methods_offset);
1624 typeArrayOop methods = typeArrayOop(m);
1625 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1626
1627 oop b = backtrace->obj_at(trace_bcis_offset);
1628 typeArrayOop bcis = typeArrayOop(b);
1629 assert(bcis != NULL, "bci array not preallocated");
1630
1631 oop mr = backtrace->obj_at(trace_mirrors_offset);
1632 objArrayOop mirrors = objArrayOop(mr);
1633 assert(mirrors != NULL, "bci array not preallocated");
1634
1635 assert(methods->length() == bcis->length() &&
1636 methods->length() == mirrors->length(),
1637 "method and bci arrays should match");
1638
1639 JavaThread* thread = JavaThread::current();
1640 ResourceMark rm(thread);
1641 vframeStream st(thread);
1642
1643 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1644 // methods as preallocated errors aren't created by "java" code.
1645
1646 // fill in as much stack trace as possible
1647 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1648 int chunk_count = 0;
1649
1650 for (;!st.at_end(); st.next()) {
1651 // Add entry and smear the -1 bci to 0 since the array only holds
1652 // unsigned shorts. The later line number lookup would just smear
1653 // the -1 to a 0 even if it could be recorded.
1654 int bci = st.bci();
1655 if (bci == SynchronizationEntryBCI) bci = 0;
1656 assert(bci == (jushort)bci, "doesn't fit");
1657 bcis->ushort_at_put(chunk_count, bci);
1658 methods->metadata_at_put(chunk_count, st.method());
1659 mirrors->obj_at_put(chunk_count,
1660 st.method()->method_holder()->java_mirror());
1661
1662 chunk_count++;
1663
1664 // Bail-out for deep stacks
1665 if (chunk_count >= max_chunks) break;
1666 }
1667
1668 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1669 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1670 // can be removed in a JDK using this JVM version
1671 if (JDK_Version::is_gte_jdk17x_version()) {
1672 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1673 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1674 }
1675
1676 }
1677
1678
1679 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1680 if (throwable == NULL) {
1681 THROW_0(vmSymbols::java_lang_NullPointerException());
1682 }
1683 objArrayOop chunk = objArrayOop(backtrace(throwable));
1684 int depth = 0;
1685 if (chunk != NULL) {
1686 // Iterate over chunks and count full ones
1687 while (true) {
1688 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1689 if (next == NULL) break;
1690 depth += trace_chunk_size;
1691 chunk = next;
1692 }
1693 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1694 // Count element in remaining partial chunk
1695 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1696 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1697 assert(methods != NULL && bcis != NULL, "sanity check");
1698 for (int i = 0; i < methods->length(); i++) {
1699 if (methods->metadata_at(i) == NULL) break;
1700 depth++;
1701 }
1702 }
1703 return depth;
1704 }
1705
1706
1707 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1708 if (throwable == NULL) {
1709 THROW_0(vmSymbols::java_lang_NullPointerException());
1710 }
1711 if (index < 0) {
1712 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1713 }
1714 // Compute how many chunks to skip and index into actual chunk
1715 objArrayOop chunk = objArrayOop(backtrace(throwable));
1716 int skip_chunks = index / trace_chunk_size;
1717 int chunk_index = index % trace_chunk_size;
1718 while (chunk != NULL && skip_chunks > 0) {
1719 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1720 skip_chunks--;
1721 }
1722 if (chunk == NULL) {
1723 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1724 }
1725 // Get method,bci from chunk
1726 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1727 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1728 assert(methods != NULL && bcis != NULL, "sanity check");
1729 methodHandle method(THREAD, ((Method*)methods->metadata_at(chunk_index)));
1730 int bci = bcis->ushort_at(chunk_index);
1731 // Chunk can be partial full
1732 if (method.is_null()) {
1733 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1734 }
1735
1736 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1737 return element;
1738 }
1739
1740 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1741 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1742 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1743
1744 // Allocate java.lang.StackTraceElement instance
1745 Klass* k = SystemDictionary::StackTraceElement_klass();
1746 assert(k != NULL, "must be loaded in 1.4+");
1747 instanceKlassHandle ik (THREAD, k);
1748 if (ik->should_be_initialized()) {
1749 ik->initialize(CHECK_0);
1750 }
1751
1752 Handle element = ik->allocate_instance_handle(CHECK_0);
1753 // Fill in class name
1754 ResourceMark rm(THREAD);
1755 const char* str = method->method_holder()->external_name();
1756 oop classname = StringTable::intern((char*) str, CHECK_0);
1757 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1758 // Fill in method name
1759 oop methodname = StringTable::intern(method->name(), CHECK_0);
1760 java_lang_StackTraceElement::set_methodName(element(), methodname);
1761 // Fill in source file name
1762 Symbol* source = method->method_holder()->source_file_name();
1763 if (ShowHiddenFrames && source == NULL)
1764 source = vmSymbols::unknown_class_name();
1765 oop filename = StringTable::intern(source, CHECK_0);
1766 java_lang_StackTraceElement::set_fileName(element(), filename);
1767 // File in source line number
1768 int line_number;
1769 if (method->is_native()) {
1770 // Negative value different from -1 below, enabling Java code in
1771 // class java.lang.StackTraceElement to distinguish "native" from
1772 // "no LineNumberTable".
1773 line_number = -2;
1774 } else {
1775 // Returns -1 if no LineNumberTable, and otherwise actual line number
1776 line_number = method->line_number_from_bci(bci);
1777 if (line_number == -1 && ShowHiddenFrames) {
1778 line_number = bci + 1000000;
1779 }
1780 }
1781 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1782
1783 return element();
1784 }
1785
1786
1787 void java_lang_reflect_AccessibleObject::compute_offsets() {
1788 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1789 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1790 }
1791
1792 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1794 return (jboolean) reflect->bool_field(override_offset);
1795 }
1796
1797 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1799 reflect->bool_field_put(override_offset, (int) value);
1800 }
1801
1802 void java_lang_reflect_Method::compute_offsets() {
1803 Klass* k = SystemDictionary::reflect_Method_klass();
1804 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1805 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1806 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1807 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1808 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1809 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1810 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1811 // The generic signature and annotations fields are only present in 1.5
1812 signature_offset = -1;
1813 annotations_offset = -1;
1814 parameter_annotations_offset = -1;
1815 annotation_default_offset = -1;
1816 type_annotations_offset = -1;
1817 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1818 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1819 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1820 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1821 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1822 }
1823
1824 Handle java_lang_reflect_Method::create(TRAPS) {
1825 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1826 Klass* klass = SystemDictionary::reflect_Method_klass();
1827 // This class is eagerly initialized during VM initialization, since we keep a refence
1828 // to one of the methods
1829 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1830 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1831 }
1832
1833 oop java_lang_reflect_Method::clazz(oop reflect) {
1834 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1835 return reflect->obj_field(clazz_offset);
1836 }
1837
1838 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1839 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1840 reflect->obj_field_put(clazz_offset, value);
1841 }
1842
1843 int java_lang_reflect_Method::slot(oop reflect) {
1844 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1845 return reflect->int_field(slot_offset);
1846 }
1847
1848 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1849 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1850 reflect->int_field_put(slot_offset, value);
1851 }
1852
1853 oop java_lang_reflect_Method::name(oop method) {
1854 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1855 return method->obj_field(name_offset);
1856 }
1857
1858 void java_lang_reflect_Method::set_name(oop method, oop value) {
1859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1860 method->obj_field_put(name_offset, value);
1861 }
1862
1863 oop java_lang_reflect_Method::return_type(oop method) {
1864 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1865 return method->obj_field(returnType_offset);
1866 }
1867
1868 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1870 method->obj_field_put(returnType_offset, value);
1871 }
1872
1873 oop java_lang_reflect_Method::parameter_types(oop method) {
1874 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1875 return method->obj_field(parameterTypes_offset);
1876 }
1877
1878 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1879 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1880 method->obj_field_put(parameterTypes_offset, value);
1881 }
1882
1883 oop java_lang_reflect_Method::exception_types(oop method) {
1884 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1885 return method->obj_field(exceptionTypes_offset);
1886 }
1887
1888 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1889 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1890 method->obj_field_put(exceptionTypes_offset, value);
1891 }
1892
1893 int java_lang_reflect_Method::modifiers(oop method) {
1894 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1895 return method->int_field(modifiers_offset);
1896 }
1897
1898 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1899 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1900 method->int_field_put(modifiers_offset, value);
1901 }
1902
1903 bool java_lang_reflect_Method::has_signature_field() {
1904 return (signature_offset >= 0);
1905 }
1906
1907 oop java_lang_reflect_Method::signature(oop method) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 assert(has_signature_field(), "signature field must be present");
1910 return method->obj_field(signature_offset);
1911 }
1912
1913 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1914 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1915 assert(has_signature_field(), "signature field must be present");
1916 method->obj_field_put(signature_offset, value);
1917 }
1918
1919 bool java_lang_reflect_Method::has_annotations_field() {
1920 return (annotations_offset >= 0);
1921 }
1922
1923 oop java_lang_reflect_Method::annotations(oop method) {
1924 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1925 assert(has_annotations_field(), "annotations field must be present");
1926 return method->obj_field(annotations_offset);
1927 }
1928
1929 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1930 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1931 assert(has_annotations_field(), "annotations field must be present");
1932 method->obj_field_put(annotations_offset, value);
1933 }
1934
1935 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1936 return (parameter_annotations_offset >= 0);
1937 }
1938
1939 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1941 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1942 return method->obj_field(parameter_annotations_offset);
1943 }
1944
1945 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1946 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1947 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1948 method->obj_field_put(parameter_annotations_offset, value);
1949 }
1950
1951 bool java_lang_reflect_Method::has_annotation_default_field() {
1952 return (annotation_default_offset >= 0);
1953 }
1954
1955 oop java_lang_reflect_Method::annotation_default(oop method) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 assert(has_annotation_default_field(), "annotation default field must be present");
1958 return method->obj_field(annotation_default_offset);
1959 }
1960
1961 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1962 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1963 assert(has_annotation_default_field(), "annotation default field must be present");
1964 method->obj_field_put(annotation_default_offset, value);
1965 }
1966
1967 bool java_lang_reflect_Method::has_type_annotations_field() {
1968 return (type_annotations_offset >= 0);
1969 }
1970
1971 oop java_lang_reflect_Method::type_annotations(oop method) {
1972 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1973 assert(has_type_annotations_field(), "type_annotations field must be present");
1974 return method->obj_field(type_annotations_offset);
1975 }
1976
1977 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
1978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1979 assert(has_type_annotations_field(), "type_annotations field must be present");
1980 method->obj_field_put(type_annotations_offset, value);
1981 }
1982
1983 void java_lang_reflect_Constructor::compute_offsets() {
1984 Klass* k = SystemDictionary::reflect_Constructor_klass();
1985 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1986 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1987 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1988 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1989 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1990 // The generic signature and annotations fields are only present in 1.5
1991 signature_offset = -1;
1992 annotations_offset = -1;
1993 parameter_annotations_offset = -1;
1994 type_annotations_offset = -1;
1995 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1996 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1997 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1998 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1999 }
2000
2001 Handle java_lang_reflect_Constructor::create(TRAPS) {
2002 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2003 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2004 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2005 instanceKlassHandle klass (THREAD, k);
2006 // Ensure it is initialized
2007 klass->initialize(CHECK_NH);
2008 return klass->allocate_instance_handle(CHECK_NH);
2009 }
2010
2011 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2013 return reflect->obj_field(clazz_offset);
2014 }
2015
2016 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2018 reflect->obj_field_put(clazz_offset, value);
2019 }
2020
2021 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2023 return constructor->obj_field(parameterTypes_offset);
2024 }
2025
2026 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 constructor->obj_field_put(parameterTypes_offset, value);
2029 }
2030
2031 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2033 return constructor->obj_field(exceptionTypes_offset);
2034 }
2035
2036 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2038 constructor->obj_field_put(exceptionTypes_offset, value);
2039 }
2040
2041 int java_lang_reflect_Constructor::slot(oop reflect) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 return reflect->int_field(slot_offset);
2044 }
2045
2046 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2047 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2048 reflect->int_field_put(slot_offset, value);
2049 }
2050
2051 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2053 return constructor->int_field(modifiers_offset);
2054 }
2055
2056 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2058 constructor->int_field_put(modifiers_offset, value);
2059 }
2060
2061 bool java_lang_reflect_Constructor::has_signature_field() {
2062 return (signature_offset >= 0);
2063 }
2064
2065 oop java_lang_reflect_Constructor::signature(oop constructor) {
2066 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2067 assert(has_signature_field(), "signature field must be present");
2068 return constructor->obj_field(signature_offset);
2069 }
2070
2071 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2072 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2073 assert(has_signature_field(), "signature field must be present");
2074 constructor->obj_field_put(signature_offset, value);
2075 }
2076
2077 bool java_lang_reflect_Constructor::has_annotations_field() {
2078 return (annotations_offset >= 0);
2079 }
2080
2081 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2082 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2083 assert(has_annotations_field(), "annotations field must be present");
2084 return constructor->obj_field(annotations_offset);
2085 }
2086
2087 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2089 assert(has_annotations_field(), "annotations field must be present");
2090 constructor->obj_field_put(annotations_offset, value);
2091 }
2092
2093 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2094 return (parameter_annotations_offset >= 0);
2095 }
2096
2097 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2099 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2100 return method->obj_field(parameter_annotations_offset);
2101 }
2102
2103 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2104 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2105 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2106 method->obj_field_put(parameter_annotations_offset, value);
2107 }
2108
2109 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2110 return (type_annotations_offset >= 0);
2111 }
2112
2113 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2114 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2115 assert(has_type_annotations_field(), "type_annotations field must be present");
2116 return constructor->obj_field(type_annotations_offset);
2117 }
2118
2119 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2120 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2121 assert(has_type_annotations_field(), "type_annotations field must be present");
2122 constructor->obj_field_put(type_annotations_offset, value);
2123 }
2124
2125 void java_lang_reflect_Field::compute_offsets() {
2126 Klass* k = SystemDictionary::reflect_Field_klass();
2127 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2128 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2129 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2130 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2131 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2132 // The generic signature and annotations fields are only present in 1.5
2133 signature_offset = -1;
2134 annotations_offset = -1;
2135 type_annotations_offset = -1;
2136 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2137 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2138 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2139 }
2140
2141 Handle java_lang_reflect_Field::create(TRAPS) {
2142 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2143 Symbol* name = vmSymbols::java_lang_reflect_Field();
2144 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2145 instanceKlassHandle klass (THREAD, k);
2146 // Ensure it is initialized
2147 klass->initialize(CHECK_NH);
2148 return klass->allocate_instance_handle(CHECK_NH);
2149 }
2150
2151 oop java_lang_reflect_Field::clazz(oop reflect) {
2152 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2153 return reflect->obj_field(clazz_offset);
2154 }
2155
2156 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2157 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2158 reflect->obj_field_put(clazz_offset, value);
2159 }
2160
2161 oop java_lang_reflect_Field::name(oop field) {
2162 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2163 return field->obj_field(name_offset);
2164 }
2165
2166 void java_lang_reflect_Field::set_name(oop field, oop value) {
2167 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2168 field->obj_field_put(name_offset, value);
2169 }
2170
2171 oop java_lang_reflect_Field::type(oop field) {
2172 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2173 return field->obj_field(type_offset);
2174 }
2175
2176 void java_lang_reflect_Field::set_type(oop field, oop value) {
2177 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2178 field->obj_field_put(type_offset, value);
2179 }
2180
2181 int java_lang_reflect_Field::slot(oop reflect) {
2182 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2183 return reflect->int_field(slot_offset);
2184 }
2185
2186 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2187 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2188 reflect->int_field_put(slot_offset, value);
2189 }
2190
2191 int java_lang_reflect_Field::modifiers(oop field) {
2192 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2193 return field->int_field(modifiers_offset);
2194 }
2195
2196 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2197 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2198 field->int_field_put(modifiers_offset, value);
2199 }
2200
2201 bool java_lang_reflect_Field::has_signature_field() {
2202 return (signature_offset >= 0);
2203 }
2204
2205 oop java_lang_reflect_Field::signature(oop field) {
2206 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2207 assert(has_signature_field(), "signature field must be present");
2208 return field->obj_field(signature_offset);
2209 }
2210
2211 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2212 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2213 assert(has_signature_field(), "signature field must be present");
2214 field->obj_field_put(signature_offset, value);
2215 }
2216
2217 bool java_lang_reflect_Field::has_annotations_field() {
2218 return (annotations_offset >= 0);
2219 }
2220
2221 oop java_lang_reflect_Field::annotations(oop field) {
2222 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2223 assert(has_annotations_field(), "annotations field must be present");
2224 return field->obj_field(annotations_offset);
2225 }
2226
2227 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2228 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2229 assert(has_annotations_field(), "annotations field must be present");
2230 field->obj_field_put(annotations_offset, value);
2231 }
2232
2233 bool java_lang_reflect_Field::has_type_annotations_field() {
2234 return (type_annotations_offset >= 0);
2235 }
2236
2237 oop java_lang_reflect_Field::type_annotations(oop field) {
2238 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2239 assert(has_type_annotations_field(), "type_annotations field must be present");
2240 return field->obj_field(type_annotations_offset);
2241 }
2242
2243 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2244 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2245 assert(has_type_annotations_field(), "type_annotations field must be present");
2246 field->obj_field_put(type_annotations_offset, value);
2247 }
2248
2249 void sun_reflect_ConstantPool::compute_offsets() {
2250 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2251 // This null test can be removed post beta
2252 if (k != NULL) {
2253 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2254 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2255 }
2256 }
2257
2258
2259 Handle sun_reflect_ConstantPool::create(TRAPS) {
2260 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2261 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2262 instanceKlassHandle klass (THREAD, k);
2263 // Ensure it is initialized
2264 klass->initialize(CHECK_NH);
2265 return klass->allocate_instance_handle(CHECK_NH);
2266 }
2267
2268
2269 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2270 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2271 oop mirror = value->pool_holder()->java_mirror();
2272 // Save the mirror to get back the constant pool.
2273 reflect->obj_field_put(_oop_offset, mirror);
2274 }
2275
2276 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2277 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2278
2279 oop mirror = reflect->obj_field(_oop_offset);
2280 Klass* k = java_lang_Class::as_Klass(mirror);
2281 assert(k->oop_is_instance(), "Must be");
2282
2283 // Get the constant pool back from the klass. Since class redefinition
2284 // merges the new constant pool into the old, this is essentially the
2285 // same constant pool as the original. If constant pool merging is
2286 // no longer done in the future, this will have to change to save
2287 // the original.
2288 return InstanceKlass::cast(k)->constants();
2289 }
2290
2291 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2292 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2293 // This null test can be removed post beta
2294 if (k != NULL) {
2295 compute_offset(_base_offset, k,
2296 vmSymbols::base_name(), vmSymbols::object_signature());
2297 }
2298 }
2299
2300 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2301 Klass* k = SystemDictionary::box_klass(type);
2302 if (k == NULL) return NULL;
2303 instanceKlassHandle h (THREAD, k);
2304 if (!h->is_initialized()) h->initialize(CHECK_0);
2305 return h->allocate_instance(THREAD);
2306 }
2307
2308
2309 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2310 oop box = initialize_and_allocate(type, CHECK_0);
2311 if (box == NULL) return NULL;
2312 switch (type) {
2313 case T_BOOLEAN:
2314 box->bool_field_put(value_offset, value->z);
2315 break;
2316 case T_CHAR:
2317 box->char_field_put(value_offset, value->c);
2318 break;
2319 case T_FLOAT:
2320 box->float_field_put(value_offset, value->f);
2321 break;
2322 case T_DOUBLE:
2323 box->double_field_put(long_value_offset, value->d);
2324 break;
2325 case T_BYTE:
2326 box->byte_field_put(value_offset, value->b);
2327 break;
2328 case T_SHORT:
2329 box->short_field_put(value_offset, value->s);
2330 break;
2331 case T_INT:
2332 box->int_field_put(value_offset, value->i);
2333 break;
2334 case T_LONG:
2335 box->long_field_put(long_value_offset, value->j);
2336 break;
2337 default:
2338 return NULL;
2339 }
2340 return box;
2341 }
2342
2343
2344 BasicType java_lang_boxing_object::basic_type(oop box) {
2345 if (box == NULL) return T_ILLEGAL;
2346 BasicType type = SystemDictionary::box_klass_type(box->klass());
2347 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2348 return T_ILLEGAL;
2349 return type;
2350 }
2351
2352
2353 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2354 BasicType type = SystemDictionary::box_klass_type(box->klass());
2355 switch (type) {
2356 case T_BOOLEAN:
2357 value->z = box->bool_field(value_offset);
2358 break;
2359 case T_CHAR:
2360 value->c = box->char_field(value_offset);
2361 break;
2362 case T_FLOAT:
2363 value->f = box->float_field(value_offset);
2364 break;
2365 case T_DOUBLE:
2366 value->d = box->double_field(long_value_offset);
2367 break;
2368 case T_BYTE:
2369 value->b = box->byte_field(value_offset);
2370 break;
2371 case T_SHORT:
2372 value->s = box->short_field(value_offset);
2373 break;
2374 case T_INT:
2375 value->i = box->int_field(value_offset);
2376 break;
2377 case T_LONG:
2378 value->j = box->long_field(long_value_offset);
2379 break;
2380 default:
2381 return T_ILLEGAL;
2382 } // end switch
2383 return type;
2384 }
2385
2386
2387 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2388 BasicType type = SystemDictionary::box_klass_type(box->klass());
2389 switch (type) {
2390 case T_BOOLEAN:
2391 box->bool_field_put(value_offset, value->z);
2392 break;
2393 case T_CHAR:
2394 box->char_field_put(value_offset, value->c);
2395 break;
2396 case T_FLOAT:
2397 box->float_field_put(value_offset, value->f);
2398 break;
2399 case T_DOUBLE:
2400 box->double_field_put(long_value_offset, value->d);
2401 break;
2402 case T_BYTE:
2403 box->byte_field_put(value_offset, value->b);
2404 break;
2405 case T_SHORT:
2406 box->short_field_put(value_offset, value->s);
2407 break;
2408 case T_INT:
2409 box->int_field_put(value_offset, value->i);
2410 break;
2411 case T_LONG:
2412 box->long_field_put(long_value_offset, value->j);
2413 break;
2414 default:
2415 return T_ILLEGAL;
2416 } // end switch
2417 return type;
2418 }
2419
2420
2421 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2422 switch (type) {
2423 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2424 case T_CHAR: st->print("%d", value->c); break;
2425 case T_BYTE: st->print("%d", value->b); break;
2426 case T_SHORT: st->print("%d", value->s); break;
2427 case T_INT: st->print("%d", value->i); break;
2428 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2429 case T_FLOAT: st->print("%f", value->f); break;
2430 case T_DOUBLE: st->print("%lf", value->d); break;
2431 default: st->print("type %d?", type); break;
2432 }
2433 }
2434
2435
2436 // Support for java_lang_ref_Reference
2437 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2438 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2439 address addr = ik->static_field_addr(static_lock_offset);
2440 return (HeapWord*) addr;
2441 }
2442
2443 oop java_lang_ref_Reference::pending_list_lock() {
2444 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2445 address addr = ik->static_field_addr(static_lock_offset);
2446 if (UseCompressedOops) {
2447 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2448 } else {
2449 return oopDesc::load_decode_heap_oop((oop*)addr);
2450 }
2451 }
2452
2453 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2454 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2455 address addr = ik->static_field_addr(static_pending_offset);
2456 // XXX This might not be HeapWord aligned, almost rather be char *.
2457 return (HeapWord*)addr;
2458 }
2459
2460 oop java_lang_ref_Reference::pending_list() {
2461 char *addr = (char *)pending_list_addr();
2462 if (UseCompressedOops) {
2463 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2464 } else {
2465 return oopDesc::load_decode_heap_oop((oop*)addr);
2466 }
2467 }
2468
2469
2470 // Support for java_lang_ref_SoftReference
2471
2472 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2473 return ref->long_field(timestamp_offset);
2474 }
2475
2476 jlong java_lang_ref_SoftReference::clock() {
2477 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2478 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2479 return *offset;
2480 }
2481
2482 void java_lang_ref_SoftReference::set_clock(jlong value) {
2483 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2484 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2485 *offset = value;
2486 }
2487
2488
2489 // Support for java_lang_invoke_MethodHandle
2490
2491 int java_lang_invoke_MethodHandle::_type_offset;
2492 int java_lang_invoke_MethodHandle::_form_offset;
2493
2494 int java_lang_invoke_MemberName::_clazz_offset;
2495 int java_lang_invoke_MemberName::_name_offset;
2496 int java_lang_invoke_MemberName::_type_offset;
2497 int java_lang_invoke_MemberName::_flags_offset;
2498 int java_lang_invoke_MemberName::_vmtarget_offset;
2499 int java_lang_invoke_MemberName::_vmloader_offset;
2500 int java_lang_invoke_MemberName::_vmindex_offset;
2501
2502 int java_lang_invoke_LambdaForm::_vmentry_offset;
2503
2504 void java_lang_invoke_MethodHandle::compute_offsets() {
2505 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2506 if (klass_oop != NULL && EnableInvokeDynamic) {
2507 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2508 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2509 if (_form_offset == 0) {
2510 EnableInvokeDynamic = false;
2511 }
2512 }
2513 }
2514
2515 void java_lang_invoke_MemberName::compute_offsets() {
2516 Klass* klass_oop = SystemDictionary::MemberName_klass();
2517 if (klass_oop != NULL && EnableInvokeDynamic) {
2518 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2519 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2520 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2521 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2522 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2523 }
2524 }
2525
2526 void java_lang_invoke_LambdaForm::compute_offsets() {
2527 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2528 if (klass_oop != NULL && EnableInvokeDynamic) {
2529 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2530 }
2531 }
2532
2533 oop java_lang_invoke_MethodHandle::type(oop mh) {
2534 return mh->obj_field(_type_offset);
2535 }
2536
2537 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2538 mh->obj_field_put(_type_offset, mtype);
2539 }
2540
2541 oop java_lang_invoke_MethodHandle::form(oop mh) {
2542 assert(_form_offset != 0, "");
2543 return mh->obj_field(_form_offset);
2544 }
2545
2546 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2547 assert(_form_offset != 0, "");
2548 mh->obj_field_put(_form_offset, lform);
2549 }
2550
2551 /// MemberName accessors
2552
2553 oop java_lang_invoke_MemberName::clazz(oop mname) {
2554 assert(is_instance(mname), "wrong type");
2555 return mname->obj_field(_clazz_offset);
2556 }
2557
2558 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2559 assert(is_instance(mname), "wrong type");
2560 mname->obj_field_put(_clazz_offset, clazz);
2561 }
2562
2563 oop java_lang_invoke_MemberName::name(oop mname) {
2564 assert(is_instance(mname), "wrong type");
2565 return mname->obj_field(_name_offset);
2566 }
2567
2568 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2569 assert(is_instance(mname), "wrong type");
2570 mname->obj_field_put(_name_offset, name);
2571 }
2572
2573 oop java_lang_invoke_MemberName::type(oop mname) {
2574 assert(is_instance(mname), "wrong type");
2575 return mname->obj_field(_type_offset);
2576 }
2577
2578 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2579 assert(is_instance(mname), "wrong type");
2580 mname->obj_field_put(_type_offset, type);
2581 }
2582
2583 int java_lang_invoke_MemberName::flags(oop mname) {
2584 assert(is_instance(mname), "wrong type");
2585 return mname->int_field(_flags_offset);
2586 }
2587
2588 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2589 assert(is_instance(mname), "wrong type");
2590 mname->int_field_put(_flags_offset, flags);
2591 }
2592
2593 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2594 assert(is_instance(mname), "wrong type");
2595 return (Metadata*)mname->address_field(_vmtarget_offset);
2596 }
2597
2598 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2599 assert(is_instance(mname), "wrong type");
2600 // check the type of the vmtarget
2601 oop dependency = NULL;
2602 if (ref != NULL) {
2603 switch (flags(mname) & (MN_IS_METHOD |
2604 MN_IS_CONSTRUCTOR |
2605 MN_IS_FIELD)) {
2606 case MN_IS_METHOD:
2607 case MN_IS_CONSTRUCTOR:
2608 assert(ref->is_method(), "should be a method");
2609 dependency = ((Method*)ref)->method_holder()->java_mirror();
2610 break;
2611 case MN_IS_FIELD:
2612 assert(ref->is_klass(), "should be a class");
2613 dependency = ((Klass*)ref)->java_mirror();
2614 break;
2615 default:
2616 ShouldNotReachHere();
2617 }
2618 }
2619 mname->address_field_put(_vmtarget_offset, (address)ref);
2620 // Add a reference to the loader (actually mirror because anonymous classes will not have
2621 // distinct loaders) to ensure the metadata is kept alive
2622 // This mirror may be different than the one in clazz field.
2623 mname->obj_field_put(_vmloader_offset, dependency);
2624 }
2625
2626 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2627 assert(is_instance(mname), "wrong type");
2628 return (intptr_t) mname->address_field(_vmindex_offset);
2629 }
2630
2631 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2632 assert(is_instance(mname), "wrong type");
2633 mname->address_field_put(_vmindex_offset, (address) index);
2634 }
2635
2636 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2637 assert(is_instance(lform), "wrong type");
2638 return lform->obj_field(_vmentry_offset);
2639 }
2640
2641
2642 // Support for java_lang_invoke_MethodType
2643
2644 int java_lang_invoke_MethodType::_rtype_offset;
2645 int java_lang_invoke_MethodType::_ptypes_offset;
2646
2647 void java_lang_invoke_MethodType::compute_offsets() {
2648 Klass* k = SystemDictionary::MethodType_klass();
2649 if (k != NULL) {
2650 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2651 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2652 }
2653 }
2654
2655 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2656 st->print("(");
2657 objArrayOop pts = ptypes(mt);
2658 for (int i = 0, limit = pts->length(); i < limit; i++) {
2659 java_lang_Class::print_signature(pts->obj_at(i), st);
2660 }
2661 st->print(")");
2662 java_lang_Class::print_signature(rtype(mt), st);
2663 }
2664
2665 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2666 ResourceMark rm;
2667 stringStream buffer(128);
2668 print_signature(mt, &buffer);
2669 const char* sigstr = buffer.base();
2670 int siglen = (int) buffer.size();
2671 Symbol *name;
2672 if (!intern_if_not_found) {
2673 name = SymbolTable::probe(sigstr, siglen);
2674 } else {
2675 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2676 }
2677 return name;
2678 }
2679
2680 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2681 if (mt1 == mt2)
2682 return true;
2683 if (rtype(mt1) != rtype(mt2))
2684 return false;
2685 if (ptype_count(mt1) != ptype_count(mt2))
2686 return false;
2687 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2688 if (ptype(mt1, i) != ptype(mt2, i))
2689 return false;
2690 }
2691 return true;
2692 }
2693
2694 oop java_lang_invoke_MethodType::rtype(oop mt) {
2695 assert(is_instance(mt), "must be a MethodType");
2696 return mt->obj_field(_rtype_offset);
2697 }
2698
2699 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2700 assert(is_instance(mt), "must be a MethodType");
2701 return (objArrayOop) mt->obj_field(_ptypes_offset);
2702 }
2703
2704 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2705 return ptypes(mt)->obj_at(idx);
2706 }
2707
2708 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2709 return ptypes(mt)->length();
2710 }
2711
2712 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2713 objArrayOop pts = ptypes(mt);
2714 int count = pts->length();
2715 int slots = 0;
2716 for (int i = 0; i < count; i++) {
2717 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2718 slots += type2size[bt];
2719 }
2720 return slots;
2721 }
2722
2723 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2724 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2725 return type2size[bt];
2726 }
2727
2728
2729 // Support for java_lang_invoke_CallSite
2730
2731 int java_lang_invoke_CallSite::_target_offset;
2732
2733 void java_lang_invoke_CallSite::compute_offsets() {
2734 if (!EnableInvokeDynamic) return;
2735 Klass* k = SystemDictionary::CallSite_klass();
2736 if (k != NULL) {
2737 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2738 }
2739 }
2740
2741
2742 // Support for java_security_AccessControlContext
2743
2744 int java_security_AccessControlContext::_context_offset = 0;
2745 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2746 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2747
2748 void java_security_AccessControlContext::compute_offsets() {
2749 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2750 fieldDescriptor fd;
2751 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2752
2753 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2754 fatal("Invalid layout of java.security.AccessControlContext");
2755 }
2756 _context_offset = fd.offset();
2757
2758 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2759 fatal("Invalid layout of java.security.AccessControlContext");
2760 }
2761 _privilegedContext_offset = fd.offset();
2762
2763 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2764 fatal("Invalid layout of java.security.AccessControlContext");
2765 }
2766 _isPrivileged_offset = fd.offset();
2767 }
2768
2769
2770 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2771 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2772 // Ensure klass is initialized
2773 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2774 // Allocate result
2775 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2776 // Fill in values
2777 result->obj_field_put(_context_offset, context());
2778 result->obj_field_put(_privilegedContext_offset, privileged_context());
2779 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2780 return result;
2781 }
2782
2783
2784 // Support for java_lang_ClassLoader
2785
2786 bool java_lang_ClassLoader::offsets_computed = false;
2787 int java_lang_ClassLoader::_loader_data_offset = -1;
2788 int java_lang_ClassLoader::parallelCapable_offset = -1;
2789
2790 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2791 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2792 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2793 }
2794
2795 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2796 return *java_lang_ClassLoader::loader_data_addr(loader);
2797 }
2798
2799 void java_lang_ClassLoader::compute_offsets() {
2800 assert(!offsets_computed, "offsets should be initialized only once");
2801 offsets_computed = true;
2802
2803 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2804 Klass* k1 = SystemDictionary::ClassLoader_klass();
2805 compute_optional_offset(parallelCapable_offset,
2806 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2807
2808 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2809 }
2810
2811 oop java_lang_ClassLoader::parent(oop loader) {
2812 assert(is_instance(loader), "loader must be oop");
2813 return loader->obj_field(parent_offset);
2814 }
2815
2816 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2817 assert(is_instance(loader), "loader must be oop");
2818 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2819 oop acl = loader;
2820 debug_only(jint loop_count = 0);
2821 // This loop taken verbatim from ClassLoader.java:
2822 do {
2823 acl = parent(acl);
2824 if (cl == acl) {
2825 return true;
2826 }
2827 assert(++loop_count > 0, "loop_count overflow");
2828 } while (acl != NULL);
2829 return false;
2830 }
2831
2832
2833 // For class loader classes, parallelCapable defined
2834 // based on non-null field
2835 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2836 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2837 if (!JDK_Version::is_gte_jdk17x_version()
2838 || parallelCapable_offset == -1) {
2839 // Default for backward compatibility is false
2840 return false;
2841 }
2842 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2843 }
2844
2845 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2846 // Fix for 4474172; see evaluation for more details
2847 loader = non_reflection_class_loader(loader);
2848
2849 oop cl = SystemDictionary::java_system_loader();
2850 while(cl != NULL) {
2851 if (cl == loader) return true;
2852 cl = parent(cl);
2853 }
2854 return false;
2855 }
2856
2857 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2858 if (loader != NULL) {
2859 // See whether this is one of the class loaders associated with
2860 // the generated bytecodes for reflection, and if so, "magically"
2861 // delegate to its parent to prevent class loading from occurring
2862 // in places where applications using reflection didn't expect it.
2863 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2864 // This might be null in non-1.4 JDKs
2865 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2866 return parent(loader);
2867 }
2868 }
2869 return loader;
2870 }
2871
2872
2873 // Support for java_lang_System
2874 int java_lang_System::in_offset_in_bytes() {
2875 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2876 }
2877
2878
2879 int java_lang_System::out_offset_in_bytes() {
2880 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2881 }
2882
2883
2884 int java_lang_System::err_offset_in_bytes() {
2885 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2886 }
2887
2888
2889
2890 int java_lang_Class::_klass_offset;
2891 int java_lang_Class::_array_klass_offset;
2892 int java_lang_Class::_resolved_constructor_offset;
2893 int java_lang_Class::_oop_size_offset;
2894 int java_lang_Class::_static_oop_field_count_offset;
2895 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2896 int java_lang_Throwable::backtrace_offset;
2897 int java_lang_Throwable::detailMessage_offset;
2898 int java_lang_Throwable::cause_offset;
2899 int java_lang_Throwable::stackTrace_offset;
2900 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2901 int java_lang_reflect_AccessibleObject::override_offset;
2902 int java_lang_reflect_Method::clazz_offset;
2903 int java_lang_reflect_Method::name_offset;
2904 int java_lang_reflect_Method::returnType_offset;
2905 int java_lang_reflect_Method::parameterTypes_offset;
2906 int java_lang_reflect_Method::exceptionTypes_offset;
2907 int java_lang_reflect_Method::slot_offset;
2908 int java_lang_reflect_Method::modifiers_offset;
2909 int java_lang_reflect_Method::signature_offset;
2910 int java_lang_reflect_Method::annotations_offset;
2911 int java_lang_reflect_Method::parameter_annotations_offset;
2912 int java_lang_reflect_Method::annotation_default_offset;
2913 int java_lang_reflect_Method::type_annotations_offset;
2914 int java_lang_reflect_Constructor::clazz_offset;
2915 int java_lang_reflect_Constructor::parameterTypes_offset;
2916 int java_lang_reflect_Constructor::exceptionTypes_offset;
2917 int java_lang_reflect_Constructor::slot_offset;
2918 int java_lang_reflect_Constructor::modifiers_offset;
2919 int java_lang_reflect_Constructor::signature_offset;
2920 int java_lang_reflect_Constructor::annotations_offset;
2921 int java_lang_reflect_Constructor::parameter_annotations_offset;
2922 int java_lang_reflect_Constructor::type_annotations_offset;
2923 int java_lang_reflect_Field::clazz_offset;
2924 int java_lang_reflect_Field::name_offset;
2925 int java_lang_reflect_Field::type_offset;
2926 int java_lang_reflect_Field::slot_offset;
2927 int java_lang_reflect_Field::modifiers_offset;
2928 int java_lang_reflect_Field::signature_offset;
2929 int java_lang_reflect_Field::annotations_offset;
2930 int java_lang_reflect_Field::type_annotations_offset;
2931 int java_lang_boxing_object::value_offset;
2932 int java_lang_boxing_object::long_value_offset;
2933 int java_lang_ref_Reference::referent_offset;
2934 int java_lang_ref_Reference::queue_offset;
2935 int java_lang_ref_Reference::next_offset;
2936 int java_lang_ref_Reference::discovered_offset;
2937 int java_lang_ref_Reference::static_lock_offset;
2938 int java_lang_ref_Reference::static_pending_offset;
2939 int java_lang_ref_Reference::number_of_fake_oop_fields;
2940 int java_lang_ref_SoftReference::timestamp_offset;
2941 int java_lang_ref_SoftReference::static_clock_offset;
2942 int java_lang_ClassLoader::parent_offset;
2943 int java_lang_System::static_in_offset;
2944 int java_lang_System::static_out_offset;
2945 int java_lang_System::static_err_offset;
2946 int java_lang_StackTraceElement::declaringClass_offset;
2947 int java_lang_StackTraceElement::methodName_offset;
2948 int java_lang_StackTraceElement::fileName_offset;
2949 int java_lang_StackTraceElement::lineNumber_offset;
2950 int java_lang_AssertionStatusDirectives::classes_offset;
2951 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2952 int java_lang_AssertionStatusDirectives::packages_offset;
2953 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2954 int java_lang_AssertionStatusDirectives::deflt_offset;
2955 int java_nio_Buffer::_limit_offset;
2956 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2957 int sun_reflect_ConstantPool::_oop_offset;
2958 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2959
2960
2961 // Support for java_lang_StackTraceElement
2962
2963 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2964 element->obj_field_put(fileName_offset, value);
2965 }
2966
2967 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2968 element->obj_field_put(declaringClass_offset, value);
2969 }
2970
2971 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2972 element->obj_field_put(methodName_offset, value);
2973 }
2974
2975 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2976 element->int_field_put(lineNumber_offset, value);
2977 }
2978
2979
2980 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2981
2982 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2983 o->obj_field_put(classes_offset, val);
2984 }
2985
2986 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2987 o->obj_field_put(classEnabled_offset, val);
2988 }
2989
2990 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2991 o->obj_field_put(packages_offset, val);
2992 }
2993
2994 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2995 o->obj_field_put(packageEnabled_offset, val);
2996 }
2997
2998 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2999 o->bool_field_put(deflt_offset, val);
3000 }
3001
3002
3003 // Support for intrinsification of java.nio.Buffer.checkIndex
3004 int java_nio_Buffer::limit_offset() {
3005 return _limit_offset;
3006 }
3007
3008
3009 void java_nio_Buffer::compute_offsets() {
3010 Klass* k = SystemDictionary::nio_Buffer_klass();
3011 assert(k != NULL, "must be loaded in 1.4+");
3012 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3013 }
3014
3015 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3016 if (_owner_offset != 0) return;
3017
3018 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3019 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3020 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3021 compute_offset(_owner_offset, k,
3022 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3023 }
3024
3025 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3026 assert(_owner_offset != 0, "Must be initialized");
3027 return obj->obj_field(_owner_offset);
3028 }
3029
3030 // Compute hard-coded offsets
3031 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3032 // are not available to determine the offset_of_static_fields.
3033 void JavaClasses::compute_hard_coded_offsets() {
3034 const int x = heapOopSize;
3035 const int header = instanceOopDesc::base_offset_in_bytes();
3036
3037 // Throwable Class
3038 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3039 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3040 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3041 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3042 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3043
3044 // java_lang_boxing_object
3045 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3046 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3047
3048 // java_lang_ref_Reference:
3049 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3050 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3051 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3052 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3053 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3054 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3055 // Artificial fields for java_lang_ref_Reference
3056 // The first field is for the discovered field added in 1.4
3057 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3058
3059 // java_lang_ref_SoftReference Class
3060 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3061 // Don't multiply static fields because they are always in wordSize units
3062 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3063
3064 // java_lang_ClassLoader
3065 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3066
3067 // java_lang_System
3068 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3069 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3070 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3071
3072 // java_lang_StackTraceElement
3073 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3074 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3075 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3076 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3077 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3078 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3079 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3080 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3081 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3082
3083 }
3084
3085
3086 // Compute non-hard-coded field offsets of all the classes in this file
3087 void JavaClasses::compute_offsets() {
3088 // java_lang_Class::compute_offsets was called earlier in bootstrap
3089 java_lang_ClassLoader::compute_offsets();
3090 java_lang_Thread::compute_offsets();
3091 java_lang_ThreadGroup::compute_offsets();
3092 if (EnableInvokeDynamic) {
3093 java_lang_invoke_MethodHandle::compute_offsets();
3094 java_lang_invoke_MemberName::compute_offsets();
3095 java_lang_invoke_LambdaForm::compute_offsets();
3096 java_lang_invoke_MethodType::compute_offsets();
3097 java_lang_invoke_CallSite::compute_offsets();
3098 }
3099 java_security_AccessControlContext::compute_offsets();
3100 // Initialize reflection classes. The layouts of these classes
3101 // changed with the new reflection implementation in JDK 1.4, and
3102 // since the Universe doesn't know what JDK version it is until this
3103 // point we defer computation of these offsets until now.
3104 java_lang_reflect_AccessibleObject::compute_offsets();
3105 java_lang_reflect_Method::compute_offsets();
3106 java_lang_reflect_Constructor::compute_offsets();
3107 java_lang_reflect_Field::compute_offsets();
3108 if (JDK_Version::is_gte_jdk14x_version()) {
3109 java_nio_Buffer::compute_offsets();
3110 }
3111 if (JDK_Version::is_gte_jdk15x_version()) {
3112 sun_reflect_ConstantPool::compute_offsets();
3113 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3114 }
3115
3116 // generated interpreter code wants to know about the offsets we just computed:
3117 AbstractAssembler::update_delayed_values();
3118 }
3119
3120 #ifndef PRODUCT
3121
3122 // These functions exist to assert the validity of hard-coded field offsets to guard
3123 // against changes in the class files
3124
3125 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3126 EXCEPTION_MARK;
3127 fieldDescriptor fd;
3128 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3129 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3130 instanceKlassHandle h_klass (THREAD, k);
3131 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3132 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3133 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3134 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3135 return false;
3136 }
3137 if (fd.is_static()) {
3138 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3139 return false;
3140 }
3141 if (fd.offset() == hardcoded_offset ) {
3142 return true;
3143 } else {
3144 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3145 klass_name, field_name, hardcoded_offset, fd.offset());
3146 return false;
3147 }
3148 }
3149
3150
3151 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3152 EXCEPTION_MARK;
3153 fieldDescriptor fd;
3154 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3155 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3156 instanceKlassHandle h_klass (THREAD, k);
3157 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3158 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3159 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3160 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3161 return false;
3162 }
3163 if (!fd.is_static()) {
3164 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3165 return false;
3166 }
3167 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3168 return true;
3169 } else {
3170 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - InstanceMirrorKlass::offset_of_static_fields());
3171 return false;
3172 }
3173 }
3174
3175
3176 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3177 EXCEPTION_MARK;
3178 fieldDescriptor fd;
3179 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3180 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3181 instanceKlassHandle h_klass (THREAD, k);
3182 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3183 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3184 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3185 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3186 return false;
3187 }
3188 if (!fd.is_static() || !fd.has_initial_value()) {
3189 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3190 return false;
3191 }
3192 if (!fd.initial_value_tag().is_int()) {
3193 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3194 return false;
3195 }
3196 jint field_value = fd.int_initial_value();
3197 if (field_value == hardcoded_constant) {
3198 return true;
3199 } else {
3200 tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value);
3201 return false;
3202 }
3203 }
3204
3205
3206 // Check the hard-coded field offsets of all the classes in this file
3207
3208 void JavaClasses::check_offsets() {
3209 bool valid = true;
3210 HandleMark hm;
3211
3212 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3213 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3214
3215 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3216 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3217
3218 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3219 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3220
3221 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3222 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3223
3224 // java.lang.String
3225
3226 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3227 if (java_lang_String::has_offset_field()) {
3228 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3229 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3230 }
3231 if (java_lang_String::has_hash_field()) {
3232 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3233 }
3234
3235 // java.lang.Class
3236
3237 // Fake fields
3238 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3239 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3240 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3241
3242 // java.lang.Throwable
3243
3244 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3245 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3246 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3247 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3248
3249 // Boxed primitive objects (java_lang_boxing_object)
3250
3251 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3252 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3253 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3254 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3255 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3256 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3257 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3258 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3259
3260 // java.lang.ClassLoader
3261
3262 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3263
3264 // java.lang.System
3265
3266 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3267 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3268 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3269
3270 // java.lang.StackTraceElement
3271
3272 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3273 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3274 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3275 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3276
3277 // java.lang.ref.Reference
3278
3279 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3280 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3281 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3282 // Fake field
3283 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3284 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3285 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3286
3287 // java.lang.ref.SoftReference
3288
3289 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3290 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3291
3292 // java.lang.AssertionStatusDirectives
3293 //
3294 // The CheckAssertionStatusDirectives boolean can be removed from here and
3295 // globals.hpp after the AssertionStatusDirectives class has been integrated
3296 // into merlin "for some time." Without it, the vm will fail with early
3297 // merlin builds.
3298
3299 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3300 const char* nm = "java/lang/AssertionStatusDirectives";
3301 const char* sig = "[Ljava/lang/String;";
3302 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3303 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3304 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3305 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3306 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3307 }
3308
3309 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3310 }
3311
3312 #endif // PRODUCT
3313
3314 int InjectedField::compute_offset() {
3315 Klass* klass_oop = klass();
3316 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3317 if (!may_be_java && !fs.access_flags().is_internal()) {
3318 // Only look at injected fields
3319 continue;
3320 }
3321 if (fs.name() == name() && fs.signature() == signature()) {
3322 return fs.offset();
3323 }
3324 }
3325 ResourceMark rm;
3326 tty->print_cr("Invalid layout of %s at %s/%s%s", InstanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
3327 #ifndef PRODUCT
3328 klass_oop->print();
3329 tty->print_cr("all fields:");
3330 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3331 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3332 }
3333 #endif //PRODUCT
3334 fatal("Invalid layout of preloaded class");
3335 return -1;
3336 }
3337
3338 void javaClasses_init() {
3339 JavaClasses::compute_offsets();
3340 JavaClasses::check_offsets();
3341 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3342 }