1 /*
2 * Copyright (c) 1997, 2013, 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 bool java_lang_Class::is_primitive(oop java_class) {
691 // should assert:
692 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
693 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
694
695 #ifdef ASSERT
696 if (is_primitive) {
697 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
698 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
699 "Should be either the T_VOID primitive or a java primitive");
700 }
701 #endif
702
703 return is_primitive;
704 }
705
706
707 BasicType java_lang_Class::primitive_type(oop java_class) {
708 assert(java_lang_Class::is_primitive(java_class), "just checking");
709 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
710 BasicType type = T_VOID;
711 if (ak != NULL) {
712 // Note: create_basic_type_mirror above initializes ak to a non-null value.
713 type = ArrayKlass::cast(ak)->element_type();
714 } else {
715 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
716 }
717 assert(Universe::java_mirror(type) == java_class, "must be consistent");
718 return type;
719 }
720
721 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
722 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
723 if (is_primitive(java_class)) {
724 if (reference_klass != NULL)
725 (*reference_klass) = NULL;
726 return primitive_type(java_class);
727 } else {
728 if (reference_klass != NULL)
729 (*reference_klass) = as_Klass(java_class);
730 return T_OBJECT;
731 }
732 }
733
734
735 oop java_lang_Class::primitive_mirror(BasicType t) {
736 oop mirror = Universe::java_mirror(t);
737 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
738 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
739 return mirror;
740 }
741
742 bool java_lang_Class::offsets_computed = false;
743 int java_lang_Class::classRedefinedCount_offset = -1;
744
745 void java_lang_Class::compute_offsets() {
746 assert(!offsets_computed, "offsets should be initialized only once");
747 offsets_computed = true;
748
749 Klass* klass_oop = SystemDictionary::Class_klass();
750 // The classRedefinedCount field is only present starting in 1.5,
751 // so don't go fatal.
752 compute_optional_offset(classRedefinedCount_offset,
753 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
754
755 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
756 }
757
758 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
759 if (!JDK_Version::is_gte_jdk15x_version()
760 || classRedefinedCount_offset == -1) {
761 // The classRedefinedCount field is only present starting in 1.5.
762 // If we don't have an offset for it then just return -1 as a marker.
763 return -1;
764 }
765
766 return the_class_mirror->int_field(classRedefinedCount_offset);
767 }
768
769 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
770 if (!JDK_Version::is_gte_jdk15x_version()
771 || classRedefinedCount_offset == -1) {
772 // The classRedefinedCount field is only present starting in 1.5.
773 // If we don't have an offset for it then nothing to set.
774 return;
775 }
776
777 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
778 }
779
780
781 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
782 // platform thread structure, and a eetop offset which was used for thread
783 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
784 // merged, so in the HotSpot VM we just use the eetop field for the thread
785 // instead of the privateInfo_offset.
786 //
787 // Note: The stackSize field is only present starting in 1.4.
788
789 int java_lang_Thread::_name_offset = 0;
790 int java_lang_Thread::_group_offset = 0;
791 int java_lang_Thread::_contextClassLoader_offset = 0;
792 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
793 int java_lang_Thread::_priority_offset = 0;
794 int java_lang_Thread::_eetop_offset = 0;
795 int java_lang_Thread::_daemon_offset = 0;
796 int java_lang_Thread::_stillborn_offset = 0;
797 int java_lang_Thread::_stackSize_offset = 0;
798 int java_lang_Thread::_tid_offset = 0;
799 int java_lang_Thread::_thread_status_offset = 0;
800 int java_lang_Thread::_park_blocker_offset = 0;
801 int java_lang_Thread::_park_event_offset = 0 ;
802
803
804 void java_lang_Thread::compute_offsets() {
805 assert(_group_offset == 0, "offsets should be initialized only once");
806
807 Klass* k = SystemDictionary::Thread_klass();
808 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
809 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
810 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
811 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
812 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
813 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
814 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
815 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
816 // The stackSize field is only present starting in 1.4, so don't go fatal.
817 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
818 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
819 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
820 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
821 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
822 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
823 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
824 vmSymbols::long_signature());
825 }
826
827
828 JavaThread* java_lang_Thread::thread(oop java_thread) {
829 return (JavaThread*)java_thread->address_field(_eetop_offset);
830 }
831
832
833 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
834 java_thread->address_field_put(_eetop_offset, (address)thread);
835 }
836
837
838 typeArrayOop java_lang_Thread::name(oop java_thread) {
839 oop name = java_thread->obj_field(_name_offset);
840 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
841 return typeArrayOop(name);
842 }
843
844
845 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
846 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
847 java_thread->obj_field_put(_name_offset, name);
848 }
849
850
851 ThreadPriority java_lang_Thread::priority(oop java_thread) {
852 return (ThreadPriority)java_thread->int_field(_priority_offset);
853 }
854
855
856 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
857 java_thread->int_field_put(_priority_offset, priority);
858 }
859
860
861 oop java_lang_Thread::threadGroup(oop java_thread) {
862 return java_thread->obj_field(_group_offset);
863 }
864
865
866 bool java_lang_Thread::is_stillborn(oop java_thread) {
867 return java_thread->bool_field(_stillborn_offset) != 0;
868 }
869
870
871 // We never have reason to turn the stillborn bit off
872 void java_lang_Thread::set_stillborn(oop java_thread) {
873 java_thread->bool_field_put(_stillborn_offset, true);
874 }
875
876
877 bool java_lang_Thread::is_alive(oop java_thread) {
878 JavaThread* thr = java_lang_Thread::thread(java_thread);
879 return (thr != NULL);
880 }
881
882
883 bool java_lang_Thread::is_daemon(oop java_thread) {
884 return java_thread->bool_field(_daemon_offset) != 0;
885 }
886
887
888 void java_lang_Thread::set_daemon(oop java_thread) {
889 java_thread->bool_field_put(_daemon_offset, true);
890 }
891
892 oop java_lang_Thread::context_class_loader(oop java_thread) {
893 return java_thread->obj_field(_contextClassLoader_offset);
894 }
895
896 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
897 return java_thread->obj_field(_inheritedAccessControlContext_offset);
898 }
899
900
901 jlong java_lang_Thread::stackSize(oop java_thread) {
902 // The stackSize field is only present starting in 1.4
903 if (_stackSize_offset > 0) {
904 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
905 return java_thread->long_field(_stackSize_offset);
906 } else {
907 return 0;
908 }
909 }
910
911 // Write the thread status value to threadStatus field in java.lang.Thread java class.
912 void java_lang_Thread::set_thread_status(oop java_thread,
913 java_lang_Thread::ThreadStatus status) {
914 // The threadStatus is only present starting in 1.5
915 if (_thread_status_offset > 0) {
916 java_thread->int_field_put(_thread_status_offset, status);
917 }
918 }
919
920 // Read thread status value from threadStatus field in java.lang.Thread java class.
921 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
922 assert(Thread::current()->is_VM_thread() ||
923 JavaThread::current()->thread_state() == _thread_in_vm,
924 "Java Thread is not running in vm");
925 // The threadStatus is only present starting in 1.5
926 if (_thread_status_offset > 0) {
927 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
928 } else {
929 // All we can easily figure out is if it is alive, but that is
930 // enough info for a valid unknown status.
931 // These aren't restricted to valid set ThreadStatus values, so
932 // use JVMTI values and cast.
933 JavaThread* thr = java_lang_Thread::thread(java_thread);
934 if (thr == NULL) {
935 // the thread hasn't run yet or is in the process of exiting
936 return NEW;
937 }
938 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
939 }
940 }
941
942
943 jlong java_lang_Thread::thread_id(oop java_thread) {
944 // The thread ID field is only present starting in 1.5
945 if (_tid_offset > 0) {
946 return java_thread->long_field(_tid_offset);
947 } else {
948 return 0;
949 }
950 }
951
952 oop java_lang_Thread::park_blocker(oop java_thread) {
953 assert(JDK_Version::current().supports_thread_park_blocker() &&
954 _park_blocker_offset != 0, "Must support parkBlocker field");
955
956 if (_park_blocker_offset > 0) {
957 return java_thread->obj_field(_park_blocker_offset);
958 }
959
960 return NULL;
961 }
962
963 jlong java_lang_Thread::park_event(oop java_thread) {
964 if (_park_event_offset > 0) {
965 return java_thread->long_field(_park_event_offset);
966 }
967 return 0;
968 }
969
970 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
971 if (_park_event_offset > 0) {
972 java_thread->long_field_put(_park_event_offset, ptr);
973 return true;
974 }
975 return false;
976 }
977
978
979 const char* java_lang_Thread::thread_status_name(oop java_thread) {
980 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
981 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
982 switch (status) {
983 case NEW : return "NEW";
984 case RUNNABLE : return "RUNNABLE";
985 case SLEEPING : return "TIMED_WAITING (sleeping)";
986 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
987 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
988 case PARKED : return "WAITING (parking)";
989 case PARKED_TIMED : return "TIMED_WAITING (parking)";
990 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
991 case TERMINATED : return "TERMINATED";
992 default : return "UNKNOWN";
993 };
994 }
995 int java_lang_ThreadGroup::_parent_offset = 0;
996 int java_lang_ThreadGroup::_name_offset = 0;
997 int java_lang_ThreadGroup::_threads_offset = 0;
998 int java_lang_ThreadGroup::_groups_offset = 0;
999 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1000 int java_lang_ThreadGroup::_destroyed_offset = 0;
1001 int java_lang_ThreadGroup::_daemon_offset = 0;
1002 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1003 int java_lang_ThreadGroup::_nthreads_offset = 0;
1004 int java_lang_ThreadGroup::_ngroups_offset = 0;
1005
1006 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1007 assert(java_thread_group->is_oop(), "thread group must be oop");
1008 return java_thread_group->obj_field(_parent_offset);
1009 }
1010
1011 // ("name as oop" accessor is not necessary)
1012
1013 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1014 oop name = java_thread_group->obj_field(_name_offset);
1015 // ThreadGroup.name can be null
1016 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1017 }
1018
1019 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1020 assert(java_thread_group->is_oop(), "thread group must be oop");
1021 return java_thread_group->int_field(_nthreads_offset);
1022 }
1023
1024 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1025 oop threads = java_thread_group->obj_field(_threads_offset);
1026 assert(threads != NULL, "threadgroups should have threads");
1027 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1028 return objArrayOop(threads);
1029 }
1030
1031 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1032 assert(java_thread_group->is_oop(), "thread group must be oop");
1033 return java_thread_group->int_field(_ngroups_offset);
1034 }
1035
1036 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1037 oop groups = java_thread_group->obj_field(_groups_offset);
1038 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1039 return objArrayOop(groups);
1040 }
1041
1042 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1043 assert(java_thread_group->is_oop(), "thread group must be oop");
1044 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1045 }
1046
1047 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1048 assert(java_thread_group->is_oop(), "thread group must be oop");
1049 return java_thread_group->bool_field(_destroyed_offset) != 0;
1050 }
1051
1052 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1053 assert(java_thread_group->is_oop(), "thread group must be oop");
1054 return java_thread_group->bool_field(_daemon_offset) != 0;
1055 }
1056
1057 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1058 assert(java_thread_group->is_oop(), "thread group must be oop");
1059 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1060 }
1061
1062 void java_lang_ThreadGroup::compute_offsets() {
1063 assert(_parent_offset == 0, "offsets should be initialized only once");
1064
1065 Klass* k = SystemDictionary::ThreadGroup_klass();
1066
1067 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1068 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1069 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1070 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1071 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1072 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1073 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1074 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1075 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1076 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1077 }
1078
1079 oop java_lang_Throwable::unassigned_stacktrace() {
1080 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1081 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1082 if (UseCompressedOops) {
1083 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1084 } else {
1085 return oopDesc::load_decode_heap_oop((oop*)addr);
1086 }
1087 }
1088
1089 oop java_lang_Throwable::backtrace(oop throwable) {
1090 return throwable->obj_field_acquire(backtrace_offset);
1091 }
1092
1093
1094 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1095 throwable->release_obj_field_put(backtrace_offset, value);
1096 }
1097
1098
1099 oop java_lang_Throwable::message(oop throwable) {
1100 return throwable->obj_field(detailMessage_offset);
1101 }
1102
1103
1104 oop java_lang_Throwable::message(Handle throwable) {
1105 return throwable->obj_field(detailMessage_offset);
1106 }
1107
1108
1109 void java_lang_Throwable::set_message(oop throwable, oop value) {
1110 throwable->obj_field_put(detailMessage_offset, value);
1111 }
1112
1113
1114 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1115 throwable->obj_field_put(stackTrace_offset, st_element_array);
1116 }
1117
1118 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1119 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1120 set_stacktrace(throwable, NULL);
1121 }
1122
1123
1124 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1125 ResourceMark rm;
1126 Klass* k = throwable->klass();
1127 assert(k != NULL, "just checking");
1128 st->print("%s", InstanceKlass::cast(k)->external_name());
1129 oop msg = message(throwable);
1130 if (msg != NULL) {
1131 st->print(": %s", java_lang_String::as_utf8_string(msg));
1132 }
1133 }
1134
1135
1136 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1137 ResourceMark rm;
1138 Klass* k = throwable->klass();
1139 assert(k != NULL, "just checking");
1140 st->print("%s", InstanceKlass::cast(k)->external_name());
1141 oop msg = message(throwable);
1142 if (msg != NULL) {
1143 st->print(": %s", java_lang_String::as_utf8_string(msg));
1144 }
1145 }
1146
1147 // After this many redefines, the stack trace is unreliable.
1148 const int MAX_VERSION = USHRT_MAX;
1149
1150 // Helper backtrace functions to store bci|version together.
1151 static inline int merge_bci_and_version(int bci, int version) {
1152 // only store u2 for version, checking for overflow.
1153 if (version > USHRT_MAX || version < 0) version = MAX_VERSION;
1154 assert((jushort)bci == bci, "bci should be short");
1155 return build_int_from_shorts(version, bci);
1156 }
1157
1158 static inline int bci_at(unsigned int merged) {
1159 return extract_high_short_from_int(merged);
1160 }
1161 static inline int version_at(unsigned int merged) {
1162 return extract_low_short_from_int(merged);
1163 }
1164
1165 static inline bool version_matches(Method* method, int version) {
1166 return (method->constants()->version() == version && version < MAX_VERSION);
1167 }
1168
1169 static inline int get_line_number(Method* method, int bci) {
1170 int line_number = 0;
1171 if (method->is_native()) {
1172 // Negative value different from -1 below, enabling Java code in
1173 // class java.lang.StackTraceElement to distinguish "native" from
1174 // "no LineNumberTable". JDK tests for -2.
1175 line_number = -2;
1176 } else {
1177 // Returns -1 if no LineNumberTable, and otherwise actual line number
1178 line_number = method->line_number_from_bci(bci);
1179 if (line_number == -1 && ShowHiddenFrames) {
1180 line_number = bci + 1000000;
1181 }
1182 }
1183 return line_number;
1184 }
1185
1186 // This class provides a simple wrapper over the internal structure of
1187 // exception backtrace to insulate users of the backtrace from needing
1188 // to know what it looks like.
1189 class BacktraceBuilder: public StackObj {
1190 private:
1191 Handle _backtrace;
1192 objArrayOop _head;
1193 typeArrayOop _methods;
1194 typeArrayOop _bcis;
1195 objArrayOop _mirrors;
1196 int _index;
1197 No_Safepoint_Verifier _nsv;
1198
1199 public:
1200
1201 enum {
1202 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1203 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1204 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1205 trace_next_offset = java_lang_Throwable::trace_next_offset,
1206 trace_size = java_lang_Throwable::trace_size,
1207 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1208 };
1209
1210 // get info out of chunks
1211 static typeArrayOop get_methods(objArrayHandle chunk) {
1212 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1213 assert(methods != NULL, "method array should be initialized in backtrace");
1214 return methods;
1215 }
1216 static typeArrayOop get_bcis(objArrayHandle chunk) {
1217 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1218 assert(bcis != NULL, "bci array should be initialized in backtrace");
1219 return bcis;
1220 }
1221 static objArrayOop get_mirrors(objArrayHandle chunk) {
1222 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1223 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1224 return mirrors;
1225 }
1226
1227 // constructor for new backtrace
1228 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1229 expand(CHECK);
1230 _backtrace = _head;
1231 _index = 0;
1232 }
1233
1234 BacktraceBuilder(objArrayHandle backtrace) {
1235 _methods = get_methods(backtrace);
1236 _bcis = get_bcis(backtrace);
1237 _mirrors = get_mirrors(backtrace);
1238 assert(_methods->length() == _bcis->length() &&
1239 _methods->length() == _mirrors->length(),
1240 "method and source information arrays should match");
1241
1242 // head is the preallocated backtrace
1243 _backtrace = _head = backtrace();
1244 _index = 0;
1245 }
1246
1247 void expand(TRAPS) {
1248 objArrayHandle old_head(THREAD, _head);
1249 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1250
1251 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1252 objArrayHandle new_head(THREAD, head);
1253
1254 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1255 typeArrayHandle new_methods(THREAD, methods);
1256
1257 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1258 typeArrayHandle new_bcis(THREAD, bcis);
1259
1260 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1261 objArrayHandle new_mirrors(THREAD, mirrors);
1262
1263 if (!old_head.is_null()) {
1264 old_head->obj_at_put(trace_next_offset, new_head());
1265 }
1266 new_head->obj_at_put(trace_methods_offset, new_methods());
1267 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1268 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1269
1270 _head = new_head();
1271 _methods = new_methods();
1272 _bcis = new_bcis();
1273 _mirrors = new_mirrors();
1274 _index = 0;
1275 }
1276
1277 oop backtrace() {
1278 return _backtrace();
1279 }
1280
1281 inline void push(Method* method, int bci, TRAPS) {
1282 // Smear the -1 bci to 0 since the array only holds unsigned
1283 // shorts. The later line number lookup would just smear the -1
1284 // to a 0 even if it could be recorded.
1285 if (bci == SynchronizationEntryBCI) bci = 0;
1286
1287 if (_index >= trace_chunk_size) {
1288 methodHandle mhandle(THREAD, method);
1289 expand(CHECK);
1290 method = mhandle();
1291 }
1292
1293 _methods->short_at_put(_index, method->method_idnum());
1294 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1295
1296 // We need to save the mirrors in the backtrace to keep the class
1297 // from being unloaded while we still have this stack trace.
1298 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1299 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1300 _index++;
1301 }
1302
1303 };
1304
1305 // Print stack trace element to resource allocated buffer
1306 char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror,
1307 int method_id, int version, int bci) {
1308
1309 // Get strings and string lengths
1310 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1311 const char* klass_name = holder->external_name();
1312 int buf_len = (int)strlen(klass_name);
1313
1314 // pushing to the stack trace added one.
1315 Method* method = holder->method_with_idnum(method_id);
1316 char* method_name = method->name()->as_C_string();
1317 buf_len += (int)strlen(method_name);
1318
1319 char* source_file_name = NULL;
1320 if (version_matches(method, version)) {
1321 Symbol* source = holder->source_file_name();
1322 if (source != NULL) {
1323 source_file_name = source->as_C_string();
1324 buf_len += (int)strlen(source_file_name);
1325 }
1326 }
1327
1328 // Allocate temporary buffer with extra space for formatting and line number
1329 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1330
1331 // Print stack trace line in buffer
1332 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1333
1334 if (!version_matches(method, version)) {
1335 strcat(buf, "(Redefined)");
1336 } else {
1337 int line_number = get_line_number(method, bci);
1338 if (line_number == -2) {
1339 strcat(buf, "(Native Method)");
1340 } else {
1341 if (source_file_name != NULL && (line_number != -1)) {
1342 // Sourcename and linenumber
1343 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1344 } else if (source_file_name != NULL) {
1345 // Just sourcename
1346 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1347 } else {
1348 // Neither sourcename nor linenumber
1349 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1350 }
1351 nmethod* nm = method->code();
1352 if (WizardMode && nm != NULL) {
1353 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1354 }
1355 }
1356 }
1357
1358 return buf;
1359 }
1360
1361 void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror,
1362 int method_id, int version, int bci) {
1363 ResourceMark rm;
1364 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci);
1365 st->print_cr("%s", buf);
1366 }
1367
1368 void java_lang_Throwable::print_stack_element(outputStream *st, methodHandle method, int bci) {
1369 Handle mirror = method->method_holder()->java_mirror();
1370 int method_id = method->method_idnum();
1371 int version = method->constants()->version();
1372 print_stack_element(st, mirror, method_id, version, bci);
1373 }
1374
1375 const char* java_lang_Throwable::no_stack_trace_message() {
1376 return "\t<<no stack trace available>>";
1377 }
1378
1379
1380 // Currently used only for exceptions occurring during startup
1381 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1382 Thread *THREAD = Thread::current();
1383 Handle h_throwable(THREAD, throwable);
1384 while (h_throwable.not_null()) {
1385 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1386 if (result.is_null()) {
1387 st->print_cr(no_stack_trace_message());
1388 return;
1389 }
1390
1391 while (result.not_null()) {
1392
1393 // Get method id, bci, version and mirror from chunk
1394 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1395 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1396 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1397
1398 int length = methods()->length();
1399 for (int index = 0; index < length; index++) {
1400 Handle mirror(THREAD, mirrors->obj_at(index));
1401 // NULL mirror means end of stack trace
1402 if (mirror.is_null()) goto handle_cause;
1403 int method = methods->short_at(index);
1404 int version = version_at(bcis->int_at(index));
1405 int bci = bci_at(bcis->int_at(index));
1406 print_stack_element(st, mirror, method, version, bci);
1407 }
1408 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1409 }
1410 handle_cause:
1411 {
1412 EXCEPTION_MARK;
1413 JavaValue cause(T_OBJECT);
1414 JavaCalls::call_virtual(&cause,
1415 h_throwable,
1416 KlassHandle(THREAD, h_throwable->klass()),
1417 vmSymbols::getCause_name(),
1418 vmSymbols::void_throwable_signature(),
1419 THREAD);
1420 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1421 if (HAS_PENDING_EXCEPTION) {
1422 CLEAR_PENDING_EXCEPTION;
1423 h_throwable = Handle();
1424 } else {
1425 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1426 if (h_throwable.not_null()) {
1427 st->print("Caused by: ");
1428 print(h_throwable, st);
1429 st->cr();
1430 }
1431 }
1432 }
1433 }
1434 }
1435
1436 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1437 if (!StackTraceInThrowable) return;
1438 ResourceMark rm(THREAD);
1439
1440 // Start out by clearing the backtrace for this object, in case the VM
1441 // runs out of memory while allocating the stack trace
1442 set_backtrace(throwable(), NULL);
1443 if (JDK_Version::is_gte_jdk14x_version()) {
1444 // New since 1.4, clear lazily constructed Java level stacktrace if
1445 // refilling occurs
1446 // This is unnecessary in 1.7+ but harmless
1447 clear_stacktrace(throwable());
1448 }
1449
1450 int max_depth = MaxJavaStackTraceDepth;
1451 JavaThread* thread = (JavaThread*)THREAD;
1452 BacktraceBuilder bt(CHECK);
1453
1454 // If there is no Java frame just return the method that was being called
1455 // with bci 0
1456 if (!thread->has_last_Java_frame()) {
1457 if (max_depth >= 1 && method() != NULL) {
1458 bt.push(method(), 0, CHECK);
1459 set_backtrace(throwable(), bt.backtrace());
1460 }
1461 return;
1462 }
1463
1464 // Instead of using vframe directly, this version of fill_in_stack_trace
1465 // basically handles everything by hand. This significantly improved the
1466 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1467 // See bug 6333838 for more details.
1468 // The "ASSERT" here is to verify this method generates the exactly same stack
1469 // trace as utilizing vframe.
1470 #ifdef ASSERT
1471 vframeStream st(thread);
1472 methodHandle st_method(THREAD, st.method());
1473 #endif
1474 int total_count = 0;
1475 RegisterMap map(thread, false);
1476 int decode_offset = 0;
1477 nmethod* nm = NULL;
1478 bool skip_fillInStackTrace_check = false;
1479 bool skip_throwableInit_check = false;
1480 bool skip_hidden = !ShowHiddenFrames;
1481
1482 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1483 Method* method = NULL;
1484 int bci = 0;
1485
1486 // Compiled java method case.
1487 if (decode_offset != 0) {
1488 DebugInfoReadStream stream(nm, decode_offset);
1489 decode_offset = stream.read_int();
1490 method = (Method*)nm->metadata_at(stream.read_int());
1491 bci = stream.read_bci();
1492 } else {
1493 if (fr.is_first_frame()) break;
1494 address pc = fr.pc();
1495 if (fr.is_interpreted_frame()) {
1496 intptr_t bcx = fr.interpreter_frame_bcx();
1497 method = fr.interpreter_frame_method();
1498 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1499 fr = fr.sender(&map);
1500 } else {
1501 CodeBlob* cb = fr.cb();
1502 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1503 // but non nmethod
1504 fr = fr.sender(&map);
1505 if (cb == NULL || !cb->is_nmethod()) {
1506 continue;
1507 }
1508 nm = (nmethod*)cb;
1509 if (nm->method()->is_native()) {
1510 method = nm->method();
1511 bci = 0;
1512 } else {
1513 PcDesc* pd = nm->pc_desc_at(pc);
1514 decode_offset = pd->scope_decode_offset();
1515 // if decode_offset is not equal to 0, it will execute the
1516 // "compiled java method case" at the beginning of the loop.
1517 continue;
1518 }
1519 }
1520 }
1521 #ifdef ASSERT
1522 assert(st_method() == method && st.bci() == bci,
1523 "Wrong stack trace");
1524 st.next();
1525 // vframeStream::method isn't GC-safe so store off a copy
1526 // of the Method* in case we GC.
1527 if (!st.at_end()) {
1528 st_method = st.method();
1529 }
1530 #endif
1531
1532 // the format of the stacktrace will be:
1533 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1534 // - 0 or more <init> methods for the exception class (skipped)
1535 // - rest of the stack
1536
1537 if (!skip_fillInStackTrace_check) {
1538 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1539 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1540 throwable->is_a(method->method_holder())) {
1541 continue;
1542 }
1543 else {
1544 skip_fillInStackTrace_check = true; // gone past them all
1545 }
1546 }
1547 if (!skip_throwableInit_check) {
1548 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1549
1550 // skip <init> methods of the exception class and superclasses
1551 // This is simlar to classic VM.
1552 if (method->name() == vmSymbols::object_initializer_name() &&
1553 throwable->is_a(method->method_holder())) {
1554 continue;
1555 } else {
1556 // there are none or we've seen them all - either way stop checking
1557 skip_throwableInit_check = true;
1558 }
1559 }
1560 if (method->is_hidden()) {
1561 if (skip_hidden) continue;
1562 }
1563 bt.push(method, bci, CHECK);
1564 total_count++;
1565 }
1566
1567 // Put completed stack trace into throwable object
1568 set_backtrace(throwable(), bt.backtrace());
1569 }
1570
1571 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1572 // No-op if stack trace is disabled
1573 if (!StackTraceInThrowable) {
1574 return;
1575 }
1576
1577 // Disable stack traces for some preallocated out of memory errors
1578 if (!Universe::should_fill_in_stack_trace(throwable)) {
1579 return;
1580 }
1581
1582 PRESERVE_EXCEPTION_MARK;
1583
1584 JavaThread* thread = JavaThread::active();
1585 fill_in_stack_trace(throwable, method, thread);
1586 // ignore exceptions thrown during stack trace filling
1587 CLEAR_PENDING_EXCEPTION;
1588 }
1589
1590 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1591 // Allocate stack trace - backtrace is created but not filled in
1592
1593 // No-op if stack trace is disabled
1594 if (!StackTraceInThrowable) return;
1595 BacktraceBuilder bt(CHECK); // creates a backtrace
1596 set_backtrace(throwable(), bt.backtrace());
1597 }
1598
1599
1600 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1601 // Fill in stack trace into preallocated backtrace (no GC)
1602
1603 // No-op if stack trace is disabled
1604 if (!StackTraceInThrowable) return;
1605
1606 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1607
1608 JavaThread* THREAD = JavaThread::current();
1609
1610 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
1611 assert(backtrace.not_null(), "backtrace should have been preallocated");
1612
1613 ResourceMark rm(THREAD);
1614 vframeStream st(THREAD);
1615
1616 BacktraceBuilder bt(backtrace);
1617
1618 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1619 // methods as preallocated errors aren't created by "java" code.
1620
1621 // fill in as much stack trace as possible
1622 typeArrayOop methods = BacktraceBuilder::get_methods(backtrace);
1623 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1624 int chunk_count = 0;
1625
1626 for (;!st.at_end(); st.next()) {
1627 bt.push(st.method(), st.bci(), CHECK);
1628 chunk_count++;
1629
1630 // Bail-out for deep stacks
1631 if (chunk_count >= max_chunks) break;
1632 }
1633
1634 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1635 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1636 // can be removed in a JDK using this JVM version
1637 if (JDK_Version::is_gte_jdk17x_version()) {
1638 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1639 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1640 }
1641 }
1642
1643
1644 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1645 if (throwable == NULL) {
1646 THROW_0(vmSymbols::java_lang_NullPointerException());
1647 }
1648 objArrayOop chunk = objArrayOop(backtrace(throwable));
1649 int depth = 0;
1650 if (chunk != NULL) {
1651 // Iterate over chunks and count full ones
1652 while (true) {
1653 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1654 if (next == NULL) break;
1655 depth += trace_chunk_size;
1656 chunk = next;
1657 }
1658 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1659 // Count element in remaining partial chunk. NULL value for mirror
1660 // marks the end of the stack trace elements that are saved.
1661 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1662 assert(mirrors != NULL, "sanity check");
1663 for (int i = 0; i < mirrors->length(); i++) {
1664 if (mirrors->obj_at(i) == NULL) break;
1665 depth++;
1666 }
1667 }
1668 return depth;
1669 }
1670
1671
1672 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1673 if (throwable == NULL) {
1674 THROW_0(vmSymbols::java_lang_NullPointerException());
1675 }
1676 if (index < 0) {
1677 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1678 }
1679 // Compute how many chunks to skip and index into actual chunk
1680 objArrayOop chunk = objArrayOop(backtrace(throwable));
1681 int skip_chunks = index / trace_chunk_size;
1682 int chunk_index = index % trace_chunk_size;
1683 while (chunk != NULL && skip_chunks > 0) {
1684 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1685 skip_chunks--;
1686 }
1687 if (chunk == NULL) {
1688 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1689 }
1690 // Get method id, bci, version and mirror from chunk
1691 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1692 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1693 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1694
1695 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1696
1697 int method = methods->short_at(chunk_index);
1698 int version = version_at(bcis->int_at(chunk_index));
1699 int bci = bci_at(bcis->int_at(chunk_index));
1700 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1701
1702 // Chunk can be partial full
1703 if (mirror.is_null()) {
1704 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1705 }
1706
1707 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, CHECK_0);
1708 return element;
1709 }
1710
1711 oop java_lang_StackTraceElement::create(Handle mirror, int method_id, int version, int bci, TRAPS) {
1712 // Allocate java.lang.StackTraceElement instance
1713 Klass* k = SystemDictionary::StackTraceElement_klass();
1714 assert(k != NULL, "must be loaded in 1.4+");
1715 instanceKlassHandle ik (THREAD, k);
1716 if (ik->should_be_initialized()) {
1717 ik->initialize(CHECK_0);
1718 }
1719
1720 Handle element = ik->allocate_instance_handle(CHECK_0);
1721 // Fill in class name
1722 ResourceMark rm(THREAD);
1723 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1724 const char* str = holder->external_name();
1725 oop classname = StringTable::intern((char*) str, CHECK_0);
1726 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1727
1728 // Fill in method name
1729 Method* method = holder->method_with_idnum(method_id);
1730 oop methodname = StringTable::intern(method->name(), CHECK_0);
1731 java_lang_StackTraceElement::set_methodName(element(), methodname);
1732
1733 if (!version_matches(method, version)) {
1734 // The method was redefined, accurate line number information isn't available
1735 java_lang_StackTraceElement::set_fileName(element(), NULL);
1736 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1737 } else {
1738 // Fill in source file name and line number.
1739 Symbol* source = holder->source_file_name();
1740 if (ShowHiddenFrames && source == NULL)
1741 source = vmSymbols::unknown_class_name();
1742 oop filename = StringTable::intern(source, CHECK_0);
1743 java_lang_StackTraceElement::set_fileName(element(), filename);
1744
1745 int line_number = get_line_number(method, bci);
1746 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1747 }
1748 return element();
1749 }
1750
1751 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1752 Handle mirror (THREAD, method->method_holder()->java_mirror());
1753 int method_id = method->method_idnum();
1754 return create(mirror, method_id, method->constants()->version(), bci, THREAD);
1755 }
1756
1757 void java_lang_reflect_AccessibleObject::compute_offsets() {
1758 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1759 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1760 }
1761
1762 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1763 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1764 return (jboolean) reflect->bool_field(override_offset);
1765 }
1766
1767 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1768 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1769 reflect->bool_field_put(override_offset, (int) value);
1770 }
1771
1772 void java_lang_reflect_Method::compute_offsets() {
1773 Klass* k = SystemDictionary::reflect_Method_klass();
1774 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1775 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1776 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1777 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1778 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1779 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1780 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1781 // The generic signature and annotations fields are only present in 1.5
1782 signature_offset = -1;
1783 annotations_offset = -1;
1784 parameter_annotations_offset = -1;
1785 annotation_default_offset = -1;
1786 type_annotations_offset = -1;
1787 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1788 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1789 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1790 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1791 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1792 }
1793
1794 Handle java_lang_reflect_Method::create(TRAPS) {
1795 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1796 Klass* klass = SystemDictionary::reflect_Method_klass();
1797 // This class is eagerly initialized during VM initialization, since we keep a refence
1798 // to one of the methods
1799 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1800 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1801 }
1802
1803 oop java_lang_reflect_Method::clazz(oop reflect) {
1804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1805 return reflect->obj_field(clazz_offset);
1806 }
1807
1808 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1809 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1810 reflect->obj_field_put(clazz_offset, value);
1811 }
1812
1813 int java_lang_reflect_Method::slot(oop reflect) {
1814 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1815 return reflect->int_field(slot_offset);
1816 }
1817
1818 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1819 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1820 reflect->int_field_put(slot_offset, value);
1821 }
1822
1823 oop java_lang_reflect_Method::name(oop method) {
1824 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1825 return method->obj_field(name_offset);
1826 }
1827
1828 void java_lang_reflect_Method::set_name(oop method, oop value) {
1829 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1830 method->obj_field_put(name_offset, value);
1831 }
1832
1833 oop java_lang_reflect_Method::return_type(oop method) {
1834 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1835 return method->obj_field(returnType_offset);
1836 }
1837
1838 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1839 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1840 method->obj_field_put(returnType_offset, value);
1841 }
1842
1843 oop java_lang_reflect_Method::parameter_types(oop method) {
1844 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1845 return method->obj_field(parameterTypes_offset);
1846 }
1847
1848 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1849 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1850 method->obj_field_put(parameterTypes_offset, value);
1851 }
1852
1853 oop java_lang_reflect_Method::exception_types(oop method) {
1854 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1855 return method->obj_field(exceptionTypes_offset);
1856 }
1857
1858 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1860 method->obj_field_put(exceptionTypes_offset, value);
1861 }
1862
1863 int java_lang_reflect_Method::modifiers(oop method) {
1864 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1865 return method->int_field(modifiers_offset);
1866 }
1867
1868 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1870 method->int_field_put(modifiers_offset, value);
1871 }
1872
1873 bool java_lang_reflect_Method::has_signature_field() {
1874 return (signature_offset >= 0);
1875 }
1876
1877 oop java_lang_reflect_Method::signature(oop method) {
1878 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1879 assert(has_signature_field(), "signature field must be present");
1880 return method->obj_field(signature_offset);
1881 }
1882
1883 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1884 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1885 assert(has_signature_field(), "signature field must be present");
1886 method->obj_field_put(signature_offset, value);
1887 }
1888
1889 bool java_lang_reflect_Method::has_annotations_field() {
1890 return (annotations_offset >= 0);
1891 }
1892
1893 oop java_lang_reflect_Method::annotations(oop method) {
1894 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1895 assert(has_annotations_field(), "annotations field must be present");
1896 return method->obj_field(annotations_offset);
1897 }
1898
1899 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1900 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1901 assert(has_annotations_field(), "annotations field must be present");
1902 method->obj_field_put(annotations_offset, value);
1903 }
1904
1905 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1906 return (parameter_annotations_offset >= 0);
1907 }
1908
1909 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1910 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1911 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1912 return method->obj_field(parameter_annotations_offset);
1913 }
1914
1915 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1916 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1917 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1918 method->obj_field_put(parameter_annotations_offset, value);
1919 }
1920
1921 bool java_lang_reflect_Method::has_annotation_default_field() {
1922 return (annotation_default_offset >= 0);
1923 }
1924
1925 oop java_lang_reflect_Method::annotation_default(oop method) {
1926 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1927 assert(has_annotation_default_field(), "annotation default field must be present");
1928 return method->obj_field(annotation_default_offset);
1929 }
1930
1931 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1932 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1933 assert(has_annotation_default_field(), "annotation default field must be present");
1934 method->obj_field_put(annotation_default_offset, value);
1935 }
1936
1937 bool java_lang_reflect_Method::has_type_annotations_field() {
1938 return (type_annotations_offset >= 0);
1939 }
1940
1941 oop java_lang_reflect_Method::type_annotations(oop method) {
1942 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1943 assert(has_type_annotations_field(), "type_annotations field must be present");
1944 return method->obj_field(type_annotations_offset);
1945 }
1946
1947 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
1948 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1949 assert(has_type_annotations_field(), "type_annotations field must be present");
1950 method->obj_field_put(type_annotations_offset, value);
1951 }
1952
1953 void java_lang_reflect_Constructor::compute_offsets() {
1954 Klass* k = SystemDictionary::reflect_Constructor_klass();
1955 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1956 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1957 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1958 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1959 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1960 // The generic signature and annotations fields are only present in 1.5
1961 signature_offset = -1;
1962 annotations_offset = -1;
1963 parameter_annotations_offset = -1;
1964 type_annotations_offset = -1;
1965 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1966 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1967 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1968 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1969 }
1970
1971 Handle java_lang_reflect_Constructor::create(TRAPS) {
1972 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1973 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1974 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1975 instanceKlassHandle klass (THREAD, k);
1976 // Ensure it is initialized
1977 klass->initialize(CHECK_NH);
1978 return klass->allocate_instance_handle(CHECK_NH);
1979 }
1980
1981 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1982 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1983 return reflect->obj_field(clazz_offset);
1984 }
1985
1986 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1987 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1988 reflect->obj_field_put(clazz_offset, value);
1989 }
1990
1991 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1992 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1993 return constructor->obj_field(parameterTypes_offset);
1994 }
1995
1996 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1998 constructor->obj_field_put(parameterTypes_offset, value);
1999 }
2000
2001 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2002 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2003 return constructor->obj_field(exceptionTypes_offset);
2004 }
2005
2006 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2008 constructor->obj_field_put(exceptionTypes_offset, value);
2009 }
2010
2011 int java_lang_reflect_Constructor::slot(oop reflect) {
2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2013 return reflect->int_field(slot_offset);
2014 }
2015
2016 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2018 reflect->int_field_put(slot_offset, value);
2019 }
2020
2021 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2023 return constructor->int_field(modifiers_offset);
2024 }
2025
2026 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 constructor->int_field_put(modifiers_offset, value);
2029 }
2030
2031 bool java_lang_reflect_Constructor::has_signature_field() {
2032 return (signature_offset >= 0);
2033 }
2034
2035 oop java_lang_reflect_Constructor::signature(oop constructor) {
2036 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2037 assert(has_signature_field(), "signature field must be present");
2038 return constructor->obj_field(signature_offset);
2039 }
2040
2041 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 assert(has_signature_field(), "signature field must be present");
2044 constructor->obj_field_put(signature_offset, value);
2045 }
2046
2047 bool java_lang_reflect_Constructor::has_annotations_field() {
2048 return (annotations_offset >= 0);
2049 }
2050
2051 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2053 assert(has_annotations_field(), "annotations field must be present");
2054 return constructor->obj_field(annotations_offset);
2055 }
2056
2057 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2059 assert(has_annotations_field(), "annotations field must be present");
2060 constructor->obj_field_put(annotations_offset, value);
2061 }
2062
2063 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2064 return (parameter_annotations_offset >= 0);
2065 }
2066
2067 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2068 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2069 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2070 return method->obj_field(parameter_annotations_offset);
2071 }
2072
2073 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2074 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2075 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2076 method->obj_field_put(parameter_annotations_offset, value);
2077 }
2078
2079 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2080 return (type_annotations_offset >= 0);
2081 }
2082
2083 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2085 assert(has_type_annotations_field(), "type_annotations field must be present");
2086 return constructor->obj_field(type_annotations_offset);
2087 }
2088
2089 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2090 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2091 assert(has_type_annotations_field(), "type_annotations field must be present");
2092 constructor->obj_field_put(type_annotations_offset, value);
2093 }
2094
2095 void java_lang_reflect_Field::compute_offsets() {
2096 Klass* k = SystemDictionary::reflect_Field_klass();
2097 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2098 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2099 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2100 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2101 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2102 // The generic signature and annotations fields are only present in 1.5
2103 signature_offset = -1;
2104 annotations_offset = -1;
2105 type_annotations_offset = -1;
2106 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2107 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2108 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2109 }
2110
2111 Handle java_lang_reflect_Field::create(TRAPS) {
2112 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2113 Symbol* name = vmSymbols::java_lang_reflect_Field();
2114 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2115 instanceKlassHandle klass (THREAD, k);
2116 // Ensure it is initialized
2117 klass->initialize(CHECK_NH);
2118 return klass->allocate_instance_handle(CHECK_NH);
2119 }
2120
2121 oop java_lang_reflect_Field::clazz(oop reflect) {
2122 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2123 return reflect->obj_field(clazz_offset);
2124 }
2125
2126 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2128 reflect->obj_field_put(clazz_offset, value);
2129 }
2130
2131 oop java_lang_reflect_Field::name(oop field) {
2132 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2133 return field->obj_field(name_offset);
2134 }
2135
2136 void java_lang_reflect_Field::set_name(oop field, oop value) {
2137 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2138 field->obj_field_put(name_offset, value);
2139 }
2140
2141 oop java_lang_reflect_Field::type(oop field) {
2142 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2143 return field->obj_field(type_offset);
2144 }
2145
2146 void java_lang_reflect_Field::set_type(oop field, oop value) {
2147 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2148 field->obj_field_put(type_offset, value);
2149 }
2150
2151 int java_lang_reflect_Field::slot(oop reflect) {
2152 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2153 return reflect->int_field(slot_offset);
2154 }
2155
2156 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2157 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2158 reflect->int_field_put(slot_offset, value);
2159 }
2160
2161 int java_lang_reflect_Field::modifiers(oop field) {
2162 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2163 return field->int_field(modifiers_offset);
2164 }
2165
2166 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2167 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2168 field->int_field_put(modifiers_offset, value);
2169 }
2170
2171 bool java_lang_reflect_Field::has_signature_field() {
2172 return (signature_offset >= 0);
2173 }
2174
2175 oop java_lang_reflect_Field::signature(oop field) {
2176 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2177 assert(has_signature_field(), "signature field must be present");
2178 return field->obj_field(signature_offset);
2179 }
2180
2181 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2182 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2183 assert(has_signature_field(), "signature field must be present");
2184 field->obj_field_put(signature_offset, value);
2185 }
2186
2187 bool java_lang_reflect_Field::has_annotations_field() {
2188 return (annotations_offset >= 0);
2189 }
2190
2191 oop java_lang_reflect_Field::annotations(oop field) {
2192 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2193 assert(has_annotations_field(), "annotations field must be present");
2194 return field->obj_field(annotations_offset);
2195 }
2196
2197 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2198 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2199 assert(has_annotations_field(), "annotations field must be present");
2200 field->obj_field_put(annotations_offset, value);
2201 }
2202
2203 bool java_lang_reflect_Field::has_type_annotations_field() {
2204 return (type_annotations_offset >= 0);
2205 }
2206
2207 oop java_lang_reflect_Field::type_annotations(oop field) {
2208 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2209 assert(has_type_annotations_field(), "type_annotations field must be present");
2210 return field->obj_field(type_annotations_offset);
2211 }
2212
2213 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2214 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2215 assert(has_type_annotations_field(), "type_annotations field must be present");
2216 field->obj_field_put(type_annotations_offset, value);
2217 }
2218
2219 void sun_reflect_ConstantPool::compute_offsets() {
2220 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2221 // This null test can be removed post beta
2222 if (k != NULL) {
2223 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2224 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2225 }
2226 }
2227
2228 void java_lang_reflect_Parameter::compute_offsets() {
2229 Klass* k = SystemDictionary::reflect_Parameter_klass();
2230 if(NULL != k) {
2231 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2232 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2233 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2234 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2235 }
2236 }
2237
2238 Handle java_lang_reflect_Parameter::create(TRAPS) {
2239 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2240 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2241 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2242 instanceKlassHandle klass (THREAD, k);
2243 // Ensure it is initialized
2244 klass->initialize(CHECK_NH);
2245 return klass->allocate_instance_handle(CHECK_NH);
2246 }
2247
2248 oop java_lang_reflect_Parameter::name(oop param) {
2249 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2250 return param->obj_field(name_offset);
2251 }
2252
2253 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2254 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2255 param->obj_field_put(name_offset, value);
2256 }
2257
2258 int java_lang_reflect_Parameter::modifiers(oop param) {
2259 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2260 return param->int_field(modifiers_offset);
2261 }
2262
2263 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2264 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2265 param->int_field_put(modifiers_offset, value);
2266 }
2267
2268 int java_lang_reflect_Parameter::index(oop param) {
2269 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2270 return param->int_field(index_offset);
2271 }
2272
2273 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2274 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2275 param->int_field_put(index_offset, value);
2276 }
2277
2278 oop java_lang_reflect_Parameter::executable(oop param) {
2279 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2280 return param->obj_field(executable_offset);
2281 }
2282
2283 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2284 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2285 param->obj_field_put(executable_offset, value);
2286 }
2287
2288
2289 Handle sun_reflect_ConstantPool::create(TRAPS) {
2290 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2291 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2292 instanceKlassHandle klass (THREAD, k);
2293 // Ensure it is initialized
2294 klass->initialize(CHECK_NH);
2295 return klass->allocate_instance_handle(CHECK_NH);
2296 }
2297
2298
2299 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2300 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2301 oop mirror = value->pool_holder()->java_mirror();
2302 // Save the mirror to get back the constant pool.
2303 reflect->obj_field_put(_oop_offset, mirror);
2304 }
2305
2306 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2307 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2308
2309 oop mirror = reflect->obj_field(_oop_offset);
2310 Klass* k = java_lang_Class::as_Klass(mirror);
2311 assert(k->oop_is_instance(), "Must be");
2312
2313 // Get the constant pool back from the klass. Since class redefinition
2314 // merges the new constant pool into the old, this is essentially the
2315 // same constant pool as the original. If constant pool merging is
2316 // no longer done in the future, this will have to change to save
2317 // the original.
2318 return InstanceKlass::cast(k)->constants();
2319 }
2320
2321 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2322 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2323 // This null test can be removed post beta
2324 if (k != NULL) {
2325 compute_offset(_base_offset, k,
2326 vmSymbols::base_name(), vmSymbols::object_signature());
2327 }
2328 }
2329
2330 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2331 Klass* k = SystemDictionary::box_klass(type);
2332 if (k == NULL) return NULL;
2333 instanceKlassHandle h (THREAD, k);
2334 if (!h->is_initialized()) h->initialize(CHECK_0);
2335 return h->allocate_instance(THREAD);
2336 }
2337
2338
2339 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2340 oop box = initialize_and_allocate(type, CHECK_0);
2341 if (box == NULL) return NULL;
2342 switch (type) {
2343 case T_BOOLEAN:
2344 box->bool_field_put(value_offset, value->z);
2345 break;
2346 case T_CHAR:
2347 box->char_field_put(value_offset, value->c);
2348 break;
2349 case T_FLOAT:
2350 box->float_field_put(value_offset, value->f);
2351 break;
2352 case T_DOUBLE:
2353 box->double_field_put(long_value_offset, value->d);
2354 break;
2355 case T_BYTE:
2356 box->byte_field_put(value_offset, value->b);
2357 break;
2358 case T_SHORT:
2359 box->short_field_put(value_offset, value->s);
2360 break;
2361 case T_INT:
2362 box->int_field_put(value_offset, value->i);
2363 break;
2364 case T_LONG:
2365 box->long_field_put(long_value_offset, value->j);
2366 break;
2367 default:
2368 return NULL;
2369 }
2370 return box;
2371 }
2372
2373
2374 BasicType java_lang_boxing_object::basic_type(oop box) {
2375 if (box == NULL) return T_ILLEGAL;
2376 BasicType type = SystemDictionary::box_klass_type(box->klass());
2377 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2378 return T_ILLEGAL;
2379 return type;
2380 }
2381
2382
2383 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2384 BasicType type = SystemDictionary::box_klass_type(box->klass());
2385 switch (type) {
2386 case T_BOOLEAN:
2387 value->z = box->bool_field(value_offset);
2388 break;
2389 case T_CHAR:
2390 value->c = box->char_field(value_offset);
2391 break;
2392 case T_FLOAT:
2393 value->f = box->float_field(value_offset);
2394 break;
2395 case T_DOUBLE:
2396 value->d = box->double_field(long_value_offset);
2397 break;
2398 case T_BYTE:
2399 value->b = box->byte_field(value_offset);
2400 break;
2401 case T_SHORT:
2402 value->s = box->short_field(value_offset);
2403 break;
2404 case T_INT:
2405 value->i = box->int_field(value_offset);
2406 break;
2407 case T_LONG:
2408 value->j = box->long_field(long_value_offset);
2409 break;
2410 default:
2411 return T_ILLEGAL;
2412 } // end switch
2413 return type;
2414 }
2415
2416
2417 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2418 BasicType type = SystemDictionary::box_klass_type(box->klass());
2419 switch (type) {
2420 case T_BOOLEAN:
2421 box->bool_field_put(value_offset, value->z);
2422 break;
2423 case T_CHAR:
2424 box->char_field_put(value_offset, value->c);
2425 break;
2426 case T_FLOAT:
2427 box->float_field_put(value_offset, value->f);
2428 break;
2429 case T_DOUBLE:
2430 box->double_field_put(long_value_offset, value->d);
2431 break;
2432 case T_BYTE:
2433 box->byte_field_put(value_offset, value->b);
2434 break;
2435 case T_SHORT:
2436 box->short_field_put(value_offset, value->s);
2437 break;
2438 case T_INT:
2439 box->int_field_put(value_offset, value->i);
2440 break;
2441 case T_LONG:
2442 box->long_field_put(long_value_offset, value->j);
2443 break;
2444 default:
2445 return T_ILLEGAL;
2446 } // end switch
2447 return type;
2448 }
2449
2450
2451 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2452 switch (type) {
2453 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2454 case T_CHAR: st->print("%d", value->c); break;
2455 case T_BYTE: st->print("%d", value->b); break;
2456 case T_SHORT: st->print("%d", value->s); break;
2457 case T_INT: st->print("%d", value->i); break;
2458 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2459 case T_FLOAT: st->print("%f", value->f); break;
2460 case T_DOUBLE: st->print("%lf", value->d); break;
2461 default: st->print("type %d?", type); break;
2462 }
2463 }
2464
2465
2466 // Support for java_lang_ref_Reference
2467 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2468 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2469 address addr = ik->static_field_addr(static_lock_offset);
2470 return (HeapWord*) addr;
2471 }
2472
2473 oop java_lang_ref_Reference::pending_list_lock() {
2474 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2475 address addr = ik->static_field_addr(static_lock_offset);
2476 if (UseCompressedOops) {
2477 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2478 } else {
2479 return oopDesc::load_decode_heap_oop((oop*)addr);
2480 }
2481 }
2482
2483 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2484 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2485 address addr = ik->static_field_addr(static_pending_offset);
2486 // XXX This might not be HeapWord aligned, almost rather be char *.
2487 return (HeapWord*)addr;
2488 }
2489
2490 oop java_lang_ref_Reference::pending_list() {
2491 char *addr = (char *)pending_list_addr();
2492 if (UseCompressedOops) {
2493 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2494 } else {
2495 return oopDesc::load_decode_heap_oop((oop*)addr);
2496 }
2497 }
2498
2499
2500 // Support for java_lang_ref_SoftReference
2501
2502 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2503 return ref->long_field(timestamp_offset);
2504 }
2505
2506 jlong java_lang_ref_SoftReference::clock() {
2507 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2508 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2509 return *offset;
2510 }
2511
2512 void java_lang_ref_SoftReference::set_clock(jlong value) {
2513 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2514 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2515 *offset = value;
2516 }
2517
2518
2519 // Support for java_lang_invoke_MethodHandle
2520
2521 int java_lang_invoke_MethodHandle::_type_offset;
2522 int java_lang_invoke_MethodHandle::_form_offset;
2523
2524 int java_lang_invoke_MemberName::_clazz_offset;
2525 int java_lang_invoke_MemberName::_name_offset;
2526 int java_lang_invoke_MemberName::_type_offset;
2527 int java_lang_invoke_MemberName::_flags_offset;
2528 int java_lang_invoke_MemberName::_vmtarget_offset;
2529 int java_lang_invoke_MemberName::_vmloader_offset;
2530 int java_lang_invoke_MemberName::_vmindex_offset;
2531
2532 int java_lang_invoke_LambdaForm::_vmentry_offset;
2533
2534 void java_lang_invoke_MethodHandle::compute_offsets() {
2535 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2536 if (klass_oop != NULL && EnableInvokeDynamic) {
2537 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2538 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2539 if (_form_offset == 0) {
2540 EnableInvokeDynamic = false;
2541 }
2542 }
2543 }
2544
2545 void java_lang_invoke_MemberName::compute_offsets() {
2546 Klass* klass_oop = SystemDictionary::MemberName_klass();
2547 if (klass_oop != NULL && EnableInvokeDynamic) {
2548 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2549 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2550 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2551 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2552 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2553 }
2554 }
2555
2556 void java_lang_invoke_LambdaForm::compute_offsets() {
2557 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2558 if (klass_oop != NULL && EnableInvokeDynamic) {
2559 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2560 }
2561 }
2562
2563 oop java_lang_invoke_MethodHandle::type(oop mh) {
2564 return mh->obj_field(_type_offset);
2565 }
2566
2567 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2568 mh->obj_field_put(_type_offset, mtype);
2569 }
2570
2571 oop java_lang_invoke_MethodHandle::form(oop mh) {
2572 assert(_form_offset != 0, "");
2573 return mh->obj_field(_form_offset);
2574 }
2575
2576 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2577 assert(_form_offset != 0, "");
2578 mh->obj_field_put(_form_offset, lform);
2579 }
2580
2581 /// MemberName accessors
2582
2583 oop java_lang_invoke_MemberName::clazz(oop mname) {
2584 assert(is_instance(mname), "wrong type");
2585 return mname->obj_field(_clazz_offset);
2586 }
2587
2588 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2589 assert(is_instance(mname), "wrong type");
2590 mname->obj_field_put(_clazz_offset, clazz);
2591 }
2592
2593 oop java_lang_invoke_MemberName::name(oop mname) {
2594 assert(is_instance(mname), "wrong type");
2595 return mname->obj_field(_name_offset);
2596 }
2597
2598 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2599 assert(is_instance(mname), "wrong type");
2600 mname->obj_field_put(_name_offset, name);
2601 }
2602
2603 oop java_lang_invoke_MemberName::type(oop mname) {
2604 assert(is_instance(mname), "wrong type");
2605 return mname->obj_field(_type_offset);
2606 }
2607
2608 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2609 assert(is_instance(mname), "wrong type");
2610 mname->obj_field_put(_type_offset, type);
2611 }
2612
2613 int java_lang_invoke_MemberName::flags(oop mname) {
2614 assert(is_instance(mname), "wrong type");
2615 return mname->int_field(_flags_offset);
2616 }
2617
2618 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2619 assert(is_instance(mname), "wrong type");
2620 mname->int_field_put(_flags_offset, flags);
2621 }
2622
2623 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2624 assert(is_instance(mname), "wrong type");
2625 return (Metadata*)mname->address_field(_vmtarget_offset);
2626 }
2627
2628 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2629 assert(is_instance(mname), "wrong type");
2630 // check the type of the vmtarget
2631 oop dependency = NULL;
2632 if (ref != NULL) {
2633 switch (flags(mname) & (MN_IS_METHOD |
2634 MN_IS_CONSTRUCTOR |
2635 MN_IS_FIELD)) {
2636 case MN_IS_METHOD:
2637 case MN_IS_CONSTRUCTOR:
2638 assert(ref->is_method(), "should be a method");
2639 dependency = ((Method*)ref)->method_holder()->java_mirror();
2640 break;
2641 case MN_IS_FIELD:
2642 assert(ref->is_klass(), "should be a class");
2643 dependency = ((Klass*)ref)->java_mirror();
2644 break;
2645 default:
2646 ShouldNotReachHere();
2647 }
2648 }
2649 mname->address_field_put(_vmtarget_offset, (address)ref);
2650 // Add a reference to the loader (actually mirror because anonymous classes will not have
2651 // distinct loaders) to ensure the metadata is kept alive
2652 // This mirror may be different than the one in clazz field.
2653 mname->obj_field_put(_vmloader_offset, dependency);
2654 }
2655
2656 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2657 assert(is_instance(mname), "wrong type");
2658 return (intptr_t) mname->address_field(_vmindex_offset);
2659 }
2660
2661 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2662 assert(is_instance(mname), "wrong type");
2663 mname->address_field_put(_vmindex_offset, (address) index);
2664 }
2665
2666 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2667 assert(is_instance(lform), "wrong type");
2668 return lform->obj_field(_vmentry_offset);
2669 }
2670
2671
2672 // Support for java_lang_invoke_MethodType
2673
2674 int java_lang_invoke_MethodType::_rtype_offset;
2675 int java_lang_invoke_MethodType::_ptypes_offset;
2676
2677 void java_lang_invoke_MethodType::compute_offsets() {
2678 Klass* k = SystemDictionary::MethodType_klass();
2679 if (k != NULL) {
2680 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2681 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2682 }
2683 }
2684
2685 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2686 st->print("(");
2687 objArrayOop pts = ptypes(mt);
2688 for (int i = 0, limit = pts->length(); i < limit; i++) {
2689 java_lang_Class::print_signature(pts->obj_at(i), st);
2690 }
2691 st->print(")");
2692 java_lang_Class::print_signature(rtype(mt), st);
2693 }
2694
2695 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2696 ResourceMark rm;
2697 stringStream buffer(128);
2698 print_signature(mt, &buffer);
2699 const char* sigstr = buffer.base();
2700 int siglen = (int) buffer.size();
2701 Symbol *name;
2702 if (!intern_if_not_found) {
2703 name = SymbolTable::probe(sigstr, siglen);
2704 } else {
2705 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2706 }
2707 return name;
2708 }
2709
2710 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2711 if (mt1 == mt2)
2712 return true;
2713 if (rtype(mt1) != rtype(mt2))
2714 return false;
2715 if (ptype_count(mt1) != ptype_count(mt2))
2716 return false;
2717 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2718 if (ptype(mt1, i) != ptype(mt2, i))
2719 return false;
2720 }
2721 return true;
2722 }
2723
2724 oop java_lang_invoke_MethodType::rtype(oop mt) {
2725 assert(is_instance(mt), "must be a MethodType");
2726 return mt->obj_field(_rtype_offset);
2727 }
2728
2729 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2730 assert(is_instance(mt), "must be a MethodType");
2731 return (objArrayOop) mt->obj_field(_ptypes_offset);
2732 }
2733
2734 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2735 return ptypes(mt)->obj_at(idx);
2736 }
2737
2738 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2739 return ptypes(mt)->length();
2740 }
2741
2742 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2743 objArrayOop pts = ptypes(mt);
2744 int count = pts->length();
2745 int slots = 0;
2746 for (int i = 0; i < count; i++) {
2747 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2748 slots += type2size[bt];
2749 }
2750 return slots;
2751 }
2752
2753 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2754 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2755 return type2size[bt];
2756 }
2757
2758
2759 // Support for java_lang_invoke_CallSite
2760
2761 int java_lang_invoke_CallSite::_target_offset;
2762
2763 void java_lang_invoke_CallSite::compute_offsets() {
2764 if (!EnableInvokeDynamic) return;
2765 Klass* k = SystemDictionary::CallSite_klass();
2766 if (k != NULL) {
2767 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2768 }
2769 }
2770
2771
2772 // Support for java_security_AccessControlContext
2773
2774 int java_security_AccessControlContext::_context_offset = 0;
2775 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2776 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2777
2778 void java_security_AccessControlContext::compute_offsets() {
2779 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2780 fieldDescriptor fd;
2781 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2782
2783 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2784 fatal("Invalid layout of java.security.AccessControlContext");
2785 }
2786 _context_offset = fd.offset();
2787
2788 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2789 fatal("Invalid layout of java.security.AccessControlContext");
2790 }
2791 _privilegedContext_offset = fd.offset();
2792
2793 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2794 fatal("Invalid layout of java.security.AccessControlContext");
2795 }
2796 _isPrivileged_offset = fd.offset();
2797 }
2798
2799
2800 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2801 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2802 // Ensure klass is initialized
2803 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2804 // Allocate result
2805 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2806 // Fill in values
2807 result->obj_field_put(_context_offset, context());
2808 result->obj_field_put(_privilegedContext_offset, privileged_context());
2809 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2810 return result;
2811 }
2812
2813
2814 // Support for java_lang_ClassLoader
2815
2816 bool java_lang_ClassLoader::offsets_computed = false;
2817 int java_lang_ClassLoader::_loader_data_offset = -1;
2818 int java_lang_ClassLoader::parallelCapable_offset = -1;
2819
2820 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2821 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2822 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2823 }
2824
2825 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2826 return *java_lang_ClassLoader::loader_data_addr(loader);
2827 }
2828
2829 void java_lang_ClassLoader::compute_offsets() {
2830 assert(!offsets_computed, "offsets should be initialized only once");
2831 offsets_computed = true;
2832
2833 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2834 Klass* k1 = SystemDictionary::ClassLoader_klass();
2835 compute_optional_offset(parallelCapable_offset,
2836 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2837
2838 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2839 }
2840
2841 oop java_lang_ClassLoader::parent(oop loader) {
2842 assert(is_instance(loader), "loader must be oop");
2843 return loader->obj_field(parent_offset);
2844 }
2845
2846 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2847 assert(is_instance(loader), "loader must be oop");
2848 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2849 oop acl = loader;
2850 debug_only(jint loop_count = 0);
2851 // This loop taken verbatim from ClassLoader.java:
2852 do {
2853 acl = parent(acl);
2854 if (cl == acl) {
2855 return true;
2856 }
2857 assert(++loop_count > 0, "loop_count overflow");
2858 } while (acl != NULL);
2859 return false;
2860 }
2861
2862
2863 // For class loader classes, parallelCapable defined
2864 // based on non-null field
2865 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2866 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2867 if (!JDK_Version::is_gte_jdk17x_version()
2868 || parallelCapable_offset == -1) {
2869 // Default for backward compatibility is false
2870 return false;
2871 }
2872 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2873 }
2874
2875 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2876 // Fix for 4474172; see evaluation for more details
2877 loader = non_reflection_class_loader(loader);
2878
2879 oop cl = SystemDictionary::java_system_loader();
2880 while(cl != NULL) {
2881 if (cl == loader) return true;
2882 cl = parent(cl);
2883 }
2884 return false;
2885 }
2886
2887 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2888 if (loader != NULL) {
2889 // See whether this is one of the class loaders associated with
2890 // the generated bytecodes for reflection, and if so, "magically"
2891 // delegate to its parent to prevent class loading from occurring
2892 // in places where applications using reflection didn't expect it.
2893 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2894 // This might be null in non-1.4 JDKs
2895 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2896 return parent(loader);
2897 }
2898 }
2899 return loader;
2900 }
2901
2902
2903 // Support for java_lang_System
2904 int java_lang_System::in_offset_in_bytes() {
2905 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2906 }
2907
2908
2909 int java_lang_System::out_offset_in_bytes() {
2910 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2911 }
2912
2913
2914 int java_lang_System::err_offset_in_bytes() {
2915 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2916 }
2917
2918
2919
2920 int java_lang_Class::_klass_offset;
2921 int java_lang_Class::_array_klass_offset;
2922 int java_lang_Class::_oop_size_offset;
2923 int java_lang_Class::_static_oop_field_count_offset;
2924 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2925 int java_lang_Throwable::backtrace_offset;
2926 int java_lang_Throwable::detailMessage_offset;
2927 int java_lang_Throwable::cause_offset;
2928 int java_lang_Throwable::stackTrace_offset;
2929 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2930 int java_lang_reflect_AccessibleObject::override_offset;
2931 int java_lang_reflect_Method::clazz_offset;
2932 int java_lang_reflect_Method::name_offset;
2933 int java_lang_reflect_Method::returnType_offset;
2934 int java_lang_reflect_Method::parameterTypes_offset;
2935 int java_lang_reflect_Method::exceptionTypes_offset;
2936 int java_lang_reflect_Method::slot_offset;
2937 int java_lang_reflect_Method::modifiers_offset;
2938 int java_lang_reflect_Method::signature_offset;
2939 int java_lang_reflect_Method::annotations_offset;
2940 int java_lang_reflect_Method::parameter_annotations_offset;
2941 int java_lang_reflect_Method::annotation_default_offset;
2942 int java_lang_reflect_Method::type_annotations_offset;
2943 int java_lang_reflect_Constructor::clazz_offset;
2944 int java_lang_reflect_Constructor::parameterTypes_offset;
2945 int java_lang_reflect_Constructor::exceptionTypes_offset;
2946 int java_lang_reflect_Constructor::slot_offset;
2947 int java_lang_reflect_Constructor::modifiers_offset;
2948 int java_lang_reflect_Constructor::signature_offset;
2949 int java_lang_reflect_Constructor::annotations_offset;
2950 int java_lang_reflect_Constructor::parameter_annotations_offset;
2951 int java_lang_reflect_Constructor::type_annotations_offset;
2952 int java_lang_reflect_Field::clazz_offset;
2953 int java_lang_reflect_Field::name_offset;
2954 int java_lang_reflect_Field::type_offset;
2955 int java_lang_reflect_Field::slot_offset;
2956 int java_lang_reflect_Field::modifiers_offset;
2957 int java_lang_reflect_Field::signature_offset;
2958 int java_lang_reflect_Field::annotations_offset;
2959 int java_lang_reflect_Field::type_annotations_offset;
2960 int java_lang_reflect_Parameter::name_offset;
2961 int java_lang_reflect_Parameter::modifiers_offset;
2962 int java_lang_reflect_Parameter::index_offset;
2963 int java_lang_reflect_Parameter::executable_offset;
2964 int java_lang_boxing_object::value_offset;
2965 int java_lang_boxing_object::long_value_offset;
2966 int java_lang_ref_Reference::referent_offset;
2967 int java_lang_ref_Reference::queue_offset;
2968 int java_lang_ref_Reference::next_offset;
2969 int java_lang_ref_Reference::discovered_offset;
2970 int java_lang_ref_Reference::static_lock_offset;
2971 int java_lang_ref_Reference::static_pending_offset;
2972 int java_lang_ref_Reference::number_of_fake_oop_fields;
2973 int java_lang_ref_SoftReference::timestamp_offset;
2974 int java_lang_ref_SoftReference::static_clock_offset;
2975 int java_lang_ClassLoader::parent_offset;
2976 int java_lang_System::static_in_offset;
2977 int java_lang_System::static_out_offset;
2978 int java_lang_System::static_err_offset;
2979 int java_lang_StackTraceElement::declaringClass_offset;
2980 int java_lang_StackTraceElement::methodName_offset;
2981 int java_lang_StackTraceElement::fileName_offset;
2982 int java_lang_StackTraceElement::lineNumber_offset;
2983 int java_lang_AssertionStatusDirectives::classes_offset;
2984 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2985 int java_lang_AssertionStatusDirectives::packages_offset;
2986 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2987 int java_lang_AssertionStatusDirectives::deflt_offset;
2988 int java_nio_Buffer::_limit_offset;
2989 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2990 int sun_reflect_ConstantPool::_oop_offset;
2991 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2992
2993
2994 // Support for java_lang_StackTraceElement
2995
2996 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2997 element->obj_field_put(fileName_offset, value);
2998 }
2999
3000 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3001 element->obj_field_put(declaringClass_offset, value);
3002 }
3003
3004 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3005 element->obj_field_put(methodName_offset, value);
3006 }
3007
3008 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3009 element->int_field_put(lineNumber_offset, value);
3010 }
3011
3012
3013 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3014
3015 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3016 o->obj_field_put(classes_offset, val);
3017 }
3018
3019 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3020 o->obj_field_put(classEnabled_offset, val);
3021 }
3022
3023 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3024 o->obj_field_put(packages_offset, val);
3025 }
3026
3027 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3028 o->obj_field_put(packageEnabled_offset, val);
3029 }
3030
3031 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3032 o->bool_field_put(deflt_offset, val);
3033 }
3034
3035
3036 // Support for intrinsification of java.nio.Buffer.checkIndex
3037 int java_nio_Buffer::limit_offset() {
3038 return _limit_offset;
3039 }
3040
3041
3042 void java_nio_Buffer::compute_offsets() {
3043 Klass* k = SystemDictionary::nio_Buffer_klass();
3044 assert(k != NULL, "must be loaded in 1.4+");
3045 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3046 }
3047
3048 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3049 if (_owner_offset != 0) return;
3050
3051 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3052 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3053 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3054 compute_offset(_owner_offset, k,
3055 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3056 }
3057
3058 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3059 assert(_owner_offset != 0, "Must be initialized");
3060 return obj->obj_field(_owner_offset);
3061 }
3062
3063 // Compute hard-coded offsets
3064 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3065 // are not available to determine the offset_of_static_fields.
3066 void JavaClasses::compute_hard_coded_offsets() {
3067 const int x = heapOopSize;
3068 const int header = instanceOopDesc::base_offset_in_bytes();
3069
3070 // Throwable Class
3071 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3072 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3073 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3074 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3075 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3076
3077 // java_lang_boxing_object
3078 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3079 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3080
3081 // java_lang_ref_Reference:
3082 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3083 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3084 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3085 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3086 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3087 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3088 // Artificial fields for java_lang_ref_Reference
3089 // The first field is for the discovered field added in 1.4
3090 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3091
3092 // java_lang_ref_SoftReference Class
3093 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3094 // Don't multiply static fields because they are always in wordSize units
3095 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3096
3097 // java_lang_ClassLoader
3098 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3099
3100 // java_lang_System
3101 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3102 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3103 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3104
3105 // java_lang_StackTraceElement
3106 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3107 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3108 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3109 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3110 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3111 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3112 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3113 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3114 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3115
3116 }
3117
3118
3119 // Compute non-hard-coded field offsets of all the classes in this file
3120 void JavaClasses::compute_offsets() {
3121 // java_lang_Class::compute_offsets was called earlier in bootstrap
3122 java_lang_ClassLoader::compute_offsets();
3123 java_lang_Thread::compute_offsets();
3124 java_lang_ThreadGroup::compute_offsets();
3125 if (EnableInvokeDynamic) {
3126 java_lang_invoke_MethodHandle::compute_offsets();
3127 java_lang_invoke_MemberName::compute_offsets();
3128 java_lang_invoke_LambdaForm::compute_offsets();
3129 java_lang_invoke_MethodType::compute_offsets();
3130 java_lang_invoke_CallSite::compute_offsets();
3131 }
3132 java_security_AccessControlContext::compute_offsets();
3133 // Initialize reflection classes. The layouts of these classes
3134 // changed with the new reflection implementation in JDK 1.4, and
3135 // since the Universe doesn't know what JDK version it is until this
3136 // point we defer computation of these offsets until now.
3137 java_lang_reflect_AccessibleObject::compute_offsets();
3138 java_lang_reflect_Method::compute_offsets();
3139 java_lang_reflect_Constructor::compute_offsets();
3140 java_lang_reflect_Field::compute_offsets();
3141 if (JDK_Version::is_gte_jdk14x_version()) {
3142 java_nio_Buffer::compute_offsets();
3143 }
3144 if (JDK_Version::is_gte_jdk15x_version()) {
3145 sun_reflect_ConstantPool::compute_offsets();
3146 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3147 }
3148 if (JDK_Version::is_jdk18x_version())
3149 java_lang_reflect_Parameter::compute_offsets();
3150
3151 // generated interpreter code wants to know about the offsets we just computed:
3152 AbstractAssembler::update_delayed_values();
3153 }
3154
3155 #ifndef PRODUCT
3156
3157 // These functions exist to assert the validity of hard-coded field offsets to guard
3158 // against changes in the class files
3159
3160 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3161 EXCEPTION_MARK;
3162 fieldDescriptor fd;
3163 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3164 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3165 instanceKlassHandle h_klass (THREAD, k);
3166 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3167 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3168 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3169 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3170 return false;
3171 }
3172 if (fd.is_static()) {
3173 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3174 return false;
3175 }
3176 if (fd.offset() == hardcoded_offset ) {
3177 return true;
3178 } else {
3179 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3180 klass_name, field_name, hardcoded_offset, fd.offset());
3181 return false;
3182 }
3183 }
3184
3185
3186 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3187 EXCEPTION_MARK;
3188 fieldDescriptor fd;
3189 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3190 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3191 instanceKlassHandle h_klass (THREAD, k);
3192 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3193 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3194 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3195 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3196 return false;
3197 }
3198 if (!fd.is_static()) {
3199 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3200 return false;
3201 }
3202 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3203 return true;
3204 } else {
3205 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());
3206 return false;
3207 }
3208 }
3209
3210
3211 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3212 EXCEPTION_MARK;
3213 fieldDescriptor fd;
3214 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3215 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3216 instanceKlassHandle h_klass (THREAD, k);
3217 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3218 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3219 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3220 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3221 return false;
3222 }
3223 if (!fd.is_static() || !fd.has_initial_value()) {
3224 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3225 return false;
3226 }
3227 if (!fd.initial_value_tag().is_int()) {
3228 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3229 return false;
3230 }
3231 jint field_value = fd.int_initial_value();
3232 if (field_value == hardcoded_constant) {
3233 return true;
3234 } else {
3235 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);
3236 return false;
3237 }
3238 }
3239
3240
3241 // Check the hard-coded field offsets of all the classes in this file
3242
3243 void JavaClasses::check_offsets() {
3244 bool valid = true;
3245 HandleMark hm;
3246
3247 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3248 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3249
3250 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3251 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3252
3253 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3254 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3255
3256 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3257 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3258
3259 // java.lang.String
3260
3261 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3262 if (java_lang_String::has_offset_field()) {
3263 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3264 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3265 }
3266 if (java_lang_String::has_hash_field()) {
3267 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3268 }
3269
3270 // java.lang.Class
3271
3272 // Fake fields
3273 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3274 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3275
3276 // java.lang.Throwable
3277
3278 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3279 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3280 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3281 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3282
3283 // Boxed primitive objects (java_lang_boxing_object)
3284
3285 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3286 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3287 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3288 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3289 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3290 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3291 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3292 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3293
3294 // java.lang.ClassLoader
3295
3296 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3297
3298 // java.lang.System
3299
3300 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3301 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3302 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3303
3304 // java.lang.StackTraceElement
3305
3306 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3307 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3308 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3309 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3310
3311 // java.lang.ref.Reference
3312
3313 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3314 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3315 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3316 // Fake field
3317 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3318 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3319 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3320
3321 // java.lang.ref.SoftReference
3322
3323 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3324 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3325
3326 // java.lang.AssertionStatusDirectives
3327 //
3328 // The CheckAssertionStatusDirectives boolean can be removed from here and
3329 // globals.hpp after the AssertionStatusDirectives class has been integrated
3330 // into merlin "for some time." Without it, the vm will fail with early
3331 // merlin builds.
3332
3333 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3334 const char* nm = "java/lang/AssertionStatusDirectives";
3335 const char* sig = "[Ljava/lang/String;";
3336 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3337 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3338 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3339 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3340 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3341 }
3342
3343 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3344 }
3345
3346 #endif // PRODUCT
3347
3348 int InjectedField::compute_offset() {
3349 Klass* klass_oop = klass();
3350 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3351 if (!may_be_java && !fs.access_flags().is_internal()) {
3352 // Only look at injected fields
3353 continue;
3354 }
3355 if (fs.name() == name() && fs.signature() == signature()) {
3356 return fs.offset();
3357 }
3358 }
3359 ResourceMark rm;
3360 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)" : "");
3361 #ifndef PRODUCT
3362 klass_oop->print();
3363 tty->print_cr("all fields:");
3364 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3365 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3366 }
3367 #endif //PRODUCT
3368 fatal("Invalid layout of preloaded class");
3369 return -1;
3370 }
3371
3372 void javaClasses_init() {
3373 JavaClasses::compute_offsets();
3374 JavaClasses::check_offsets();
3375 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3376 }