1 /*
2 * Copyright (c) 1997, 2011, 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/javaClasses.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/debugInfo.hpp"
30 #include "code/pcDesc.hpp"
31 #include "compiler/compilerOracle.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "memory/oopFactory.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "memory/universe.inline.hpp"
36 #include "oops/fieldStreams.hpp"
37 #include "oops/instanceKlass.hpp"
38 #include "oops/instanceMirrorKlass.hpp"
39 #include "oops/klass.hpp"
40 #include "oops/klassOop.hpp"
41 #include "oops/methodOop.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/vframe.hpp"
51 #include "utilities/preserveException.hpp"
52 #ifdef TARGET_OS_FAMILY_linux
53 # include "thread_linux.inline.hpp"
54 #endif
55 #ifdef TARGET_OS_FAMILY_solaris
56 # include "thread_solaris.inline.hpp"
57 #endif
58 #ifdef TARGET_OS_FAMILY_windows
59 # include "thread_windows.inline.hpp"
60 #endif
61 #ifdef TARGET_OS_FAMILY_bsd
62 # include "thread_bsd.inline.hpp"
63 #endif
64
65 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
66 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
67
68 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
69 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
70
71 InjectedField JavaClasses::_injected_fields[] = {
72 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
73 };
74
75 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
76 return _injected_fields[id].compute_offset();
77 }
78
79
80 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
81 *field_count = 0;
82
83 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
84 if (sid == vmSymbols::NO_SID) {
85 // Only well known classes can inject fields
86 return NULL;
87 }
88
89 int count = 0;
90 int start = -1;
91
92 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
93 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
94 count++; \
95 if (start == -1) start = klass##_##name##_enum; \
96 }
97 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
98 #undef LOOKUP_INJECTED_FIELD
99
100 if (start != -1) {
101 *field_count = count;
102 return _injected_fields + start;
103 }
104 return NULL;
105 }
106
107
108 static bool find_field(instanceKlass* ik,
109 Symbol* name_symbol, Symbol* signature_symbol,
110 fieldDescriptor* fd,
111 bool allow_super = false) {
112 if (allow_super)
113 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
114 else
115 return ik->find_local_field(name_symbol, signature_symbol, fd);
116 }
117
118 // Helpful routine for computing field offsets at run time rather than hardcoding them
119 static void
120 compute_offset(int &dest_offset,
121 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
122 bool allow_super = false) {
123 fieldDescriptor fd;
124 instanceKlass* ik = instanceKlass::cast(klass_oop);
125 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
126 ResourceMark rm;
127 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
128 fatal("Invalid layout of preloaded class");
129 }
130 dest_offset = fd.offset();
131 }
132
133 // Same as above but for "optional" offsets that might not be present in certain JDK versions
134 static void
135 compute_optional_offset(int& dest_offset,
136 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
137 bool allow_super = false) {
138 fieldDescriptor fd;
139 instanceKlass* ik = instanceKlass::cast(klass_oop);
140 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
141 dest_offset = fd.offset();
142 }
143 }
144
145
146 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
147 // Create the String object first, so there's a chance that the String
148 // and the char array it points to end up in the same cache line.
149 oop obj;
150 if (tenured) {
151 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
152 } else {
153 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
154 }
155
156 // Create the char array. The String object must be handlized here
157 // because GC can happen as a result of the allocation attempt.
158 Handle h_obj(THREAD, obj);
159 typeArrayOop buffer;
160 if (tenured) {
161 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
162 } else {
163 buffer = oopFactory::new_charArray(length, CHECK_NH);
164 }
165
166 // Point the String at the char array
167 obj = h_obj();
168 set_value(obj, buffer);
169 // No need to zero the offset, allocation zero'ed the entire String object
170 assert(offset(obj) == 0, "initial String offset should be zero");
171 //set_offset(obj, 0);
172 set_count(obj, length);
173
174 return h_obj;
175 }
176
177 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
178 Handle h_obj = basic_create(length, tenured, CHECK_NH);
179 typeArrayOop buffer = value(h_obj());
180 for (int index = 0; index < length; index++) {
181 buffer->char_at_put(index, unicode[index]);
182 }
183 return h_obj;
184 }
185
186 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
187 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
188 }
189
190 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
191 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
192 }
193
194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
195 Handle h_obj = basic_create_from_unicode(unicode, length, false, 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, false, 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, false, 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, false, 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_string(oop java_string) {
331 typeArrayOop value = java_lang_String::value(java_string);
332 int offset = java_lang_String::offset(java_string);
333 int length = java_lang_String::length(java_string);
334
335 if (length == 0) return 0;
336 return hash_string(value->char_at_addr(offset), length);
337 }
338
339 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
340 oop obj = java_string();
341 typeArrayOop value = java_lang_String::value(obj);
342 int offset = java_lang_String::offset(obj);
343 int length = java_lang_String::length(obj);
344 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
345 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
346 return sym;
347 }
348
349 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
350 typeArrayOop value = java_lang_String::value(java_string);
351 int offset = java_lang_String::offset(java_string);
352 int length = java_lang_String::length(java_string);
353 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
354 return SymbolTable::probe_unicode(base, length);
355 }
356
357
358 int java_lang_String::utf8_length(oop java_string) {
359 typeArrayOop value = java_lang_String::value(java_string);
360 int offset = java_lang_String::offset(java_string);
361 int length = java_lang_String::length(java_string);
362 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
363 return UNICODE::utf8_length(position, length);
364 }
365
366 char* java_lang_String::as_utf8_string(oop java_string) {
367 typeArrayOop value = java_lang_String::value(java_string);
368 int offset = java_lang_String::offset(java_string);
369 int length = java_lang_String::length(java_string);
370 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
371 return UNICODE::as_utf8(position, length);
372 }
373
374 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
375 typeArrayOop value = java_lang_String::value(java_string);
376 int offset = java_lang_String::offset(java_string);
377 int length = java_lang_String::length(java_string);
378 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
379 return UNICODE::as_utf8(position, length, buf, buflen);
380 }
381
382 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
383 typeArrayOop value = java_lang_String::value(java_string);
384 int offset = java_lang_String::offset(java_string);
385 int length = java_lang_String::length(java_string);
386 assert(start + len <= length, "just checking");
387 jchar* position = value->char_at_addr(offset + start);
388 return UNICODE::as_utf8(position, len);
389 }
390
391 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
392 assert(SharedSkipVerify ||
393 java_string->klass() == SystemDictionary::String_klass(),
394 "must be java_string");
395 typeArrayOop value = java_lang_String::value(java_string);
396 int offset = java_lang_String::offset(java_string);
397 int length = java_lang_String::length(java_string);
398 if (length != len) {
399 return false;
400 }
401 for (int i = 0; i < len; i++) {
402 if (value->char_at(i + offset) != chars[i]) {
403 return false;
404 }
405 }
406 return true;
407 }
408
409 void java_lang_String::print(Handle java_string, outputStream* st) {
410 oop obj = java_string();
411 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
412 typeArrayOop value = java_lang_String::value(obj);
413 int offset = java_lang_String::offset(obj);
414 int length = java_lang_String::length(obj);
415
416 int end = MIN2(length, 100);
417 if (value == NULL) {
418 // This can happen if, e.g., printing a String
419 // object before its initializer has been called
420 st->print_cr("NULL");
421 } else {
422 st->print("\"");
423 for (int index = 0; index < length; index++) {
424 st->print("%c", value->char_at(index + offset));
425 }
426 st->print("\"");
427 }
428 }
429
430 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
431 Handle mirror (THREAD, fd->field_holder()->java_mirror());
432 assert(mirror.not_null() && fd->is_static(), "just checking");
433 if (fd->has_initial_value()) {
434 BasicType t = fd->field_type();
435 switch (t) {
436 case T_BYTE:
437 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
438 break;
439 case T_BOOLEAN:
440 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
441 break;
442 case T_CHAR:
443 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
444 break;
445 case T_SHORT:
446 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
447 break;
448 case T_INT:
449 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
450 break;
451 case T_FLOAT:
452 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
453 break;
454 case T_DOUBLE:
455 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
456 break;
457 case T_LONG:
458 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
459 break;
460 case T_OBJECT:
461 {
462 #ifdef ASSERT
463 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
464 assert(fd->signature() == sym, "just checking");
465 #endif
466 oop string = fd->string_initial_value(CHECK);
467 mirror()->obj_field_put(fd->offset(), string);
468 }
469 break;
470 default:
471 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
472 "Illegal ConstantValue attribute in class file");
473 }
474 }
475 }
476
477
478 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
479 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
480
481 if (k->oop_is_instance()) {
482 // During bootstrap, java.lang.Class wasn't loaded so static field
483 // offsets were computed without the size added it. Go back and
484 // update all the static field offsets to included the size.
485 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
486 if (fs.access_flags().is_static()) {
487 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
488 fs.set_offset(real_offset);
489 }
490 }
491 }
492 create_mirror(k, CHECK);
493 }
494
495 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
496 assert(k->java_mirror() == NULL, "should only assign mirror once");
497 // Use this moment of initialization to cache modifier_flags also,
498 // to support Class.getModifiers(). Instance classes recalculate
499 // the cached flags after the class file is parsed, but before the
500 // class is put into the system dictionary.
501 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
502 k->set_modifier_flags(computed_modifiers);
503 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
504 // Allocate mirror (java.lang.Class instance)
505 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
506 // Setup indirections
507 mirror->obj_field_put(_klass_offset, k());
508 k->set_java_mirror(mirror());
509
510 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
511 java_lang_Class::set_oop_size(mirror(), mk->instance_size(k));
512 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
513
514 // It might also have a component mirror. This mirror must already exist.
515 if (k->oop_is_javaArray()) {
516 Handle comp_mirror;
517 if (k->oop_is_typeArray()) {
518 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
519 comp_mirror = Universe::java_mirror(type);
520 assert(comp_mirror.not_null(), "must have primitive mirror");
521 } else if (k->oop_is_objArray()) {
522 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
523 if (element_klass != NULL
524 && (Klass::cast(element_klass)->oop_is_instance() ||
525 Klass::cast(element_klass)->oop_is_javaArray())) {
526 comp_mirror = Klass::cast(element_klass)->java_mirror();
527 assert(comp_mirror.not_null(), "must have element mirror");
528 }
529 // else some object array internal to the VM, like systemObjArrayKlassObj
530 }
531 if (comp_mirror.not_null()) {
532 // Two-way link between the array klass and its component mirror:
533 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
534 set_array_klass(comp_mirror(), k->as_klassOop());
535 }
536 } else if (k->oop_is_instance()) {
537 // Initialize static fields
538 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
539 }
540 return mirror();
541 } else {
542 return NULL;
543 }
544 }
545
546
547
548 int java_lang_Class::oop_size(oop java_class) {
549 assert(_oop_size_offset != 0, "must be set");
550 return java_class->int_field(_oop_size_offset);
551 }
552 void java_lang_Class::set_oop_size(oop java_class, int size) {
553 assert(_oop_size_offset != 0, "must be set");
554 java_class->int_field_put(_oop_size_offset, size);
555 }
556 int java_lang_Class::static_oop_field_count(oop java_class) {
557 assert(_static_oop_field_count_offset != 0, "must be set");
558 return java_class->int_field(_static_oop_field_count_offset);
559 }
560 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
561 assert(_static_oop_field_count_offset != 0, "must be set");
562 java_class->int_field_put(_static_oop_field_count_offset, size);
563 }
564
565 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
566 // This should be improved by adding a field at the Java level or by
567 // introducing a new VM klass (see comment in ClassFileParser)
568 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
569 if (type != T_VOID) {
570 klassOop aklass = Universe::typeArrayKlassObj(type);
571 assert(aklass != NULL, "correct bootstrap");
572 set_array_klass(java_class, aklass);
573 }
574 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
575 java_lang_Class::set_oop_size(java_class, mk->instance_size(oop(NULL)));
576 java_lang_Class::set_static_oop_field_count(java_class, 0);
577 return java_class;
578 }
579
580
581 klassOop java_lang_Class::as_klassOop(oop java_class) {
582 //%note memory_2
583 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
584 klassOop k = klassOop(java_class->obj_field(_klass_offset));
585 assert(k == NULL || k->is_klass(), "type check");
586 return k;
587 }
588
589
590 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
591 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
592 Symbol* name = NULL;
593 bool is_instance = false;
594 if (is_primitive(java_class)) {
595 name = vmSymbols::type_signature(primitive_type(java_class));
596 } else {
597 klassOop k = as_klassOop(java_class);
598 is_instance = Klass::cast(k)->oop_is_instance();
599 name = Klass::cast(k)->name();
600 }
601 if (name == NULL) {
602 st->print("<null>");
603 return;
604 }
605 if (is_instance) st->print("L");
606 st->write((char*) name->base(), (int) name->utf8_length());
607 if (is_instance) st->print(";");
608 }
609
610 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
611 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
612 Symbol* name;
613 if (is_primitive(java_class)) {
614 name = vmSymbols::type_signature(primitive_type(java_class));
615 // Because this can create a new symbol, the caller has to decrement
616 // the refcount, so make adjustment here and below for symbols returned
617 // that are not created or incremented due to a successful lookup.
618 name->increment_refcount();
619 } else {
620 klassOop k = as_klassOop(java_class);
621 if (!Klass::cast(k)->oop_is_instance()) {
622 name = Klass::cast(k)->name();
623 name->increment_refcount();
624 } else {
625 ResourceMark rm;
626 const char* sigstr = Klass::cast(k)->signature_name();
627 int siglen = (int) strlen(sigstr);
628 if (!intern_if_not_found) {
629 name = SymbolTable::probe(sigstr, siglen);
630 } else {
631 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
632 }
633 }
634 }
635 return name;
636 }
637
638
639 klassOop java_lang_Class::array_klass(oop java_class) {
640 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
641 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
642 return k;
643 }
644
645
646 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
647 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
648 java_class->obj_field_put(_array_klass_offset, klass);
649 }
650
651
652 methodOop java_lang_Class::resolved_constructor(oop java_class) {
653 oop constructor = java_class->obj_field(_resolved_constructor_offset);
654 assert(constructor == NULL || constructor->is_method(), "should be method");
655 return methodOop(constructor);
656 }
657
658
659 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
660 assert(constructor->is_method(), "should be method");
661 java_class->obj_field_put(_resolved_constructor_offset, constructor);
662 }
663
664
665 bool java_lang_Class::is_primitive(oop java_class) {
666 // should assert:
667 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
668 klassOop k = klassOop(java_class->obj_field(_klass_offset));
669 return k == NULL;
670 }
671
672
673 BasicType java_lang_Class::primitive_type(oop java_class) {
674 assert(java_lang_Class::is_primitive(java_class), "just checking");
675 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
676 BasicType type = T_VOID;
677 if (ak != NULL) {
678 // Note: create_basic_type_mirror above initializes ak to a non-null value.
679 type = arrayKlass::cast(ak)->element_type();
680 } else {
681 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
682 }
683 assert(Universe::java_mirror(type) == java_class, "must be consistent");
684 return type;
685 }
686
687 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
688 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
689 if (is_primitive(java_class)) {
690 if (reference_klass != NULL)
691 (*reference_klass) = NULL;
692 return primitive_type(java_class);
693 } else {
694 if (reference_klass != NULL)
695 (*reference_klass) = as_klassOop(java_class);
696 return T_OBJECT;
697 }
698 }
699
700
701 oop java_lang_Class::primitive_mirror(BasicType t) {
702 oop mirror = Universe::java_mirror(t);
703 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
704 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
705 return mirror;
706 }
707
708 bool java_lang_Class::offsets_computed = false;
709 int java_lang_Class::classRedefinedCount_offset = -1;
710
711 void java_lang_Class::compute_offsets() {
712 assert(!offsets_computed, "offsets should be initialized only once");
713 offsets_computed = true;
714
715 klassOop klass_oop = SystemDictionary::Class_klass();
716 // The classRedefinedCount field is only present starting in 1.5,
717 // so don't go fatal.
718 compute_optional_offset(classRedefinedCount_offset,
719 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
720
721 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
722 }
723
724 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
725 if (!JDK_Version::is_gte_jdk15x_version()
726 || classRedefinedCount_offset == -1) {
727 // The classRedefinedCount field is only present starting in 1.5.
728 // If we don't have an offset for it then just return -1 as a marker.
729 return -1;
730 }
731
732 return the_class_mirror->int_field(classRedefinedCount_offset);
733 }
734
735 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
736 if (!JDK_Version::is_gte_jdk15x_version()
737 || classRedefinedCount_offset == -1) {
738 // The classRedefinedCount field is only present starting in 1.5.
739 // If we don't have an offset for it then nothing to set.
740 return;
741 }
742
743 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
744 }
745
746
747 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
748 // platform thread structure, and a eetop offset which was used for thread
749 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
750 // merged, so in the HotSpot VM we just use the eetop field for the thread
751 // instead of the privateInfo_offset.
752 //
753 // Note: The stackSize field is only present starting in 1.4.
754
755 int java_lang_Thread::_name_offset = 0;
756 int java_lang_Thread::_group_offset = 0;
757 int java_lang_Thread::_contextClassLoader_offset = 0;
758 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
759 int java_lang_Thread::_priority_offset = 0;
760 int java_lang_Thread::_eetop_offset = 0;
761 int java_lang_Thread::_daemon_offset = 0;
762 int java_lang_Thread::_stillborn_offset = 0;
763 int java_lang_Thread::_stackSize_offset = 0;
764 int java_lang_Thread::_tid_offset = 0;
765 int java_lang_Thread::_thread_status_offset = 0;
766 int java_lang_Thread::_park_blocker_offset = 0;
767 int java_lang_Thread::_park_event_offset = 0 ;
768
769
770 void java_lang_Thread::compute_offsets() {
771 assert(_group_offset == 0, "offsets should be initialized only once");
772
773 klassOop k = SystemDictionary::Thread_klass();
774 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
775 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
776 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
777 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
778 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
779 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
780 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
781 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
782 // The stackSize field is only present starting in 1.4, so don't go fatal.
783 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
784 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
785 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
786 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
787 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
788 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
789 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
790 vmSymbols::long_signature());
791 }
792
793
794 JavaThread* java_lang_Thread::thread(oop java_thread) {
795 return (JavaThread*)java_thread->address_field(_eetop_offset);
796 }
797
798
799 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
800 java_thread->address_field_put(_eetop_offset, (address)thread);
801 }
802
803
804 typeArrayOop java_lang_Thread::name(oop java_thread) {
805 oop name = java_thread->obj_field(_name_offset);
806 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
807 return typeArrayOop(name);
808 }
809
810
811 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
812 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
813 java_thread->obj_field_put(_name_offset, name);
814 }
815
816
817 ThreadPriority java_lang_Thread::priority(oop java_thread) {
818 return (ThreadPriority)java_thread->int_field(_priority_offset);
819 }
820
821
822 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
823 java_thread->int_field_put(_priority_offset, priority);
824 }
825
826
827 oop java_lang_Thread::threadGroup(oop java_thread) {
828 return java_thread->obj_field(_group_offset);
829 }
830
831
832 bool java_lang_Thread::is_stillborn(oop java_thread) {
833 return java_thread->bool_field(_stillborn_offset) != 0;
834 }
835
836
837 // We never have reason to turn the stillborn bit off
838 void java_lang_Thread::set_stillborn(oop java_thread) {
839 java_thread->bool_field_put(_stillborn_offset, true);
840 }
841
842
843 bool java_lang_Thread::is_alive(oop java_thread) {
844 JavaThread* thr = java_lang_Thread::thread(java_thread);
845 return (thr != NULL);
846 }
847
848
849 bool java_lang_Thread::is_daemon(oop java_thread) {
850 return java_thread->bool_field(_daemon_offset) != 0;
851 }
852
853
854 void java_lang_Thread::set_daemon(oop java_thread) {
855 java_thread->bool_field_put(_daemon_offset, true);
856 }
857
858 oop java_lang_Thread::context_class_loader(oop java_thread) {
859 return java_thread->obj_field(_contextClassLoader_offset);
860 }
861
862 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
863 return java_thread->obj_field(_inheritedAccessControlContext_offset);
864 }
865
866
867 jlong java_lang_Thread::stackSize(oop java_thread) {
868 // The stackSize field is only present starting in 1.4
869 if (_stackSize_offset > 0) {
870 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
871 return java_thread->long_field(_stackSize_offset);
872 } else {
873 return 0;
874 }
875 }
876
877 // Write the thread status value to threadStatus field in java.lang.Thread java class.
878 void java_lang_Thread::set_thread_status(oop java_thread,
879 java_lang_Thread::ThreadStatus status) {
880 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
881 // The threadStatus is only present starting in 1.5
882 if (_thread_status_offset > 0) {
883 java_thread->int_field_put(_thread_status_offset, status);
884 }
885 }
886
887 // Read thread status value from threadStatus field in java.lang.Thread java class.
888 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
889 assert(Thread::current()->is_VM_thread() ||
890 JavaThread::current()->thread_state() == _thread_in_vm,
891 "Java Thread is not running in vm");
892 // The threadStatus is only present starting in 1.5
893 if (_thread_status_offset > 0) {
894 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
895 } else {
896 // All we can easily figure out is if it is alive, but that is
897 // enough info for a valid unknown status.
898 // These aren't restricted to valid set ThreadStatus values, so
899 // use JVMTI values and cast.
900 JavaThread* thr = java_lang_Thread::thread(java_thread);
901 if (thr == NULL) {
902 // the thread hasn't run yet or is in the process of exiting
903 return NEW;
904 }
905 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
906 }
907 }
908
909
910 jlong java_lang_Thread::thread_id(oop java_thread) {
911 // The thread ID field is only present starting in 1.5
912 if (_tid_offset > 0) {
913 return java_thread->long_field(_tid_offset);
914 } else {
915 return 0;
916 }
917 }
918
919 oop java_lang_Thread::park_blocker(oop java_thread) {
920 assert(JDK_Version::current().supports_thread_park_blocker() &&
921 _park_blocker_offset != 0, "Must support parkBlocker field");
922
923 if (_park_blocker_offset > 0) {
924 return java_thread->obj_field(_park_blocker_offset);
925 }
926
927 return NULL;
928 }
929
930 jlong java_lang_Thread::park_event(oop java_thread) {
931 if (_park_event_offset > 0) {
932 return java_thread->long_field(_park_event_offset);
933 }
934 return 0;
935 }
936
937 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
938 if (_park_event_offset > 0) {
939 java_thread->long_field_put(_park_event_offset, ptr);
940 return true;
941 }
942 return false;
943 }
944
945
946 const char* java_lang_Thread::thread_status_name(oop java_thread) {
947 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
948 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
949 switch (status) {
950 case NEW : return "NEW";
951 case RUNNABLE : return "RUNNABLE";
952 case SLEEPING : return "TIMED_WAITING (sleeping)";
953 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
954 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
955 case PARKED : return "WAITING (parking)";
956 case PARKED_TIMED : return "TIMED_WAITING (parking)";
957 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
958 case TERMINATED : return "TERMINATED";
959 default : return "UNKNOWN";
960 };
961 }
962 int java_lang_ThreadGroup::_parent_offset = 0;
963 int java_lang_ThreadGroup::_name_offset = 0;
964 int java_lang_ThreadGroup::_threads_offset = 0;
965 int java_lang_ThreadGroup::_groups_offset = 0;
966 int java_lang_ThreadGroup::_maxPriority_offset = 0;
967 int java_lang_ThreadGroup::_destroyed_offset = 0;
968 int java_lang_ThreadGroup::_daemon_offset = 0;
969 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
970 int java_lang_ThreadGroup::_nthreads_offset = 0;
971 int java_lang_ThreadGroup::_ngroups_offset = 0;
972
973 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
974 assert(java_thread_group->is_oop(), "thread group must be oop");
975 return java_thread_group->obj_field(_parent_offset);
976 }
977
978 // ("name as oop" accessor is not necessary)
979
980 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
981 oop name = java_thread_group->obj_field(_name_offset);
982 // ThreadGroup.name can be null
983 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
984 }
985
986 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
987 assert(java_thread_group->is_oop(), "thread group must be oop");
988 return java_thread_group->int_field(_nthreads_offset);
989 }
990
991 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
992 oop threads = java_thread_group->obj_field(_threads_offset);
993 assert(threads != NULL, "threadgroups should have threads");
994 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
995 return objArrayOop(threads);
996 }
997
998 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
999 assert(java_thread_group->is_oop(), "thread group must be oop");
1000 return java_thread_group->int_field(_ngroups_offset);
1001 }
1002
1003 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1004 oop groups = java_thread_group->obj_field(_groups_offset);
1005 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1006 return objArrayOop(groups);
1007 }
1008
1009 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1010 assert(java_thread_group->is_oop(), "thread group must be oop");
1011 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1012 }
1013
1014 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1015 assert(java_thread_group->is_oop(), "thread group must be oop");
1016 return java_thread_group->bool_field(_destroyed_offset) != 0;
1017 }
1018
1019 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1020 assert(java_thread_group->is_oop(), "thread group must be oop");
1021 return java_thread_group->bool_field(_daemon_offset) != 0;
1022 }
1023
1024 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1025 assert(java_thread_group->is_oop(), "thread group must be oop");
1026 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1027 }
1028
1029 void java_lang_ThreadGroup::compute_offsets() {
1030 assert(_parent_offset == 0, "offsets should be initialized only once");
1031
1032 klassOop k = SystemDictionary::ThreadGroup_klass();
1033
1034 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1035 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1036 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1037 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1038 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1039 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1040 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1041 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1042 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1043 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1044 }
1045
1046 oop java_lang_Throwable::unassigned_stacktrace() {
1047 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1048 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1049 if (UseCompressedOops) {
1050 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1051 } else {
1052 return oopDesc::load_decode_heap_oop((oop*)addr);
1053 }
1054 }
1055
1056 oop java_lang_Throwable::backtrace(oop throwable) {
1057 return throwable->obj_field_acquire(backtrace_offset);
1058 }
1059
1060
1061 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1062 throwable->release_obj_field_put(backtrace_offset, value);
1063 }
1064
1065
1066 oop java_lang_Throwable::message(oop throwable) {
1067 return throwable->obj_field(detailMessage_offset);
1068 }
1069
1070
1071 oop java_lang_Throwable::message(Handle throwable) {
1072 return throwable->obj_field(detailMessage_offset);
1073 }
1074
1075
1076 void java_lang_Throwable::set_message(oop throwable, oop value) {
1077 throwable->obj_field_put(detailMessage_offset, value);
1078 }
1079
1080
1081 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1082 throwable->obj_field_put(stackTrace_offset, st_element_array);
1083 }
1084
1085 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1086 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1087 set_stacktrace(throwable, NULL);
1088 }
1089
1090
1091 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1092 ResourceMark rm;
1093 klassOop k = throwable->klass();
1094 assert(k != NULL, "just checking");
1095 st->print("%s", instanceKlass::cast(k)->external_name());
1096 oop msg = message(throwable);
1097 if (msg != NULL) {
1098 st->print(": %s", java_lang_String::as_utf8_string(msg));
1099 }
1100 }
1101
1102
1103 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1104 ResourceMark rm;
1105 klassOop k = throwable->klass();
1106 assert(k != NULL, "just checking");
1107 st->print("%s", instanceKlass::cast(k)->external_name());
1108 oop msg = message(throwable);
1109 if (msg != NULL) {
1110 st->print(": %s", java_lang_String::as_utf8_string(msg));
1111 }
1112 }
1113
1114 // Print stack trace element to resource allocated buffer
1115 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1116 // Get strings and string lengths
1117 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1118 const char* klass_name = klass->external_name();
1119 int buf_len = (int)strlen(klass_name);
1120 char* source_file_name;
1121 if (klass->source_file_name() == NULL) {
1122 source_file_name = NULL;
1123 } else {
1124 source_file_name = klass->source_file_name()->as_C_string();
1125 buf_len += (int)strlen(source_file_name);
1126 }
1127 char* method_name = method->name()->as_C_string();
1128 buf_len += (int)strlen(method_name);
1129
1130 // Allocate temporary buffer with extra space for formatting and line number
1131 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1132
1133 // Print stack trace line in buffer
1134 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1135 if (method->is_native()) {
1136 strcat(buf, "(Native Method)");
1137 } else {
1138 int line_number = method->line_number_from_bci(bci);
1139 if (source_file_name != NULL && (line_number != -1)) {
1140 // Sourcename and linenumber
1141 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1142 } else if (source_file_name != NULL) {
1143 // Just sourcename
1144 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1145 } else {
1146 // Neither soucename and linenumber
1147 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1148 }
1149 nmethod* nm = method->code();
1150 if (WizardMode && nm != NULL) {
1151 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1152 }
1153 }
1154
1155 return buf;
1156 }
1157
1158
1159 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1160 ResourceMark rm;
1161 char* buf = print_stack_element_to_buffer(method, bci);
1162 print_to_stream(stream, buf);
1163 }
1164
1165 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1166 ResourceMark rm;
1167 char* buf = print_stack_element_to_buffer(method, bci);
1168 st->print_cr("%s", buf);
1169 }
1170
1171 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1172 if (stream.is_null()) {
1173 tty->print_cr("%s", str);
1174 } else {
1175 EXCEPTION_MARK;
1176 JavaValue result(T_VOID);
1177 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1178 if (!HAS_PENDING_EXCEPTION) {
1179 JavaCalls::call_virtual(&result,
1180 stream,
1181 KlassHandle(THREAD, stream->klass()),
1182 vmSymbols::println_name(),
1183 vmSymbols::char_array_void_signature(),
1184 arg,
1185 THREAD);
1186 }
1187 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1188 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1189 }
1190
1191 }
1192
1193
1194 const char* java_lang_Throwable::no_stack_trace_message() {
1195 return "\t<<no stack trace available>>";
1196 }
1197
1198
1199 // Currently used only for exceptions occurring during startup
1200 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1201 Thread *THREAD = Thread::current();
1202 Handle h_throwable(THREAD, throwable);
1203 while (h_throwable.not_null()) {
1204 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1205 if (result.is_null()) {
1206 st->print_cr(no_stack_trace_message());
1207 return;
1208 }
1209
1210 while (result.not_null()) {
1211 objArrayHandle methods (THREAD,
1212 objArrayOop(result->obj_at(trace_methods_offset)));
1213 typeArrayHandle bcis (THREAD,
1214 typeArrayOop(result->obj_at(trace_bcis_offset)));
1215
1216 if (methods.is_null() || bcis.is_null()) {
1217 st->print_cr(no_stack_trace_message());
1218 return;
1219 }
1220
1221 int length = methods()->length();
1222 for (int index = 0; index < length; index++) {
1223 methodOop method = methodOop(methods()->obj_at(index));
1224 if (method == NULL) goto handle_cause;
1225 int bci = bcis->ushort_at(index);
1226 print_stack_element(st, method, bci);
1227 }
1228 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1229 }
1230 handle_cause:
1231 {
1232 EXCEPTION_MARK;
1233 JavaValue result(T_OBJECT);
1234 JavaCalls::call_virtual(&result,
1235 h_throwable,
1236 KlassHandle(THREAD, h_throwable->klass()),
1237 vmSymbols::getCause_name(),
1238 vmSymbols::void_throwable_signature(),
1239 THREAD);
1240 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1241 if (HAS_PENDING_EXCEPTION) {
1242 CLEAR_PENDING_EXCEPTION;
1243 h_throwable = Handle();
1244 } else {
1245 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1246 if (h_throwable.not_null()) {
1247 st->print("Caused by: ");
1248 print(h_throwable, st);
1249 st->cr();
1250 }
1251 }
1252 }
1253 }
1254 }
1255
1256
1257 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1258 // Note: this is no longer used in Merlin, but we support it for compatibility.
1259 Thread *thread = Thread::current();
1260 Handle stream(thread, print_stream);
1261 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1262 if (result.is_null()) {
1263 print_to_stream(stream, no_stack_trace_message());
1264 return;
1265 }
1266
1267 while (result.not_null()) {
1268 objArrayHandle methods (thread,
1269 objArrayOop(result->obj_at(trace_methods_offset)));
1270 typeArrayHandle bcis (thread,
1271 typeArrayOop(result->obj_at(trace_bcis_offset)));
1272
1273 if (methods.is_null() || bcis.is_null()) {
1274 print_to_stream(stream, no_stack_trace_message());
1275 return;
1276 }
1277
1278 int length = methods()->length();
1279 for (int index = 0; index < length; index++) {
1280 methodOop method = methodOop(methods()->obj_at(index));
1281 if (method == NULL) return;
1282 int bci = bcis->ushort_at(index);
1283 print_stack_element(stream, method, bci);
1284 }
1285 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1286 }
1287 }
1288
1289 // This class provides a simple wrapper over the internal structure of
1290 // exception backtrace to insulate users of the backtrace from needing
1291 // to know what it looks like.
1292 class BacktraceBuilder: public StackObj {
1293 private:
1294 Handle _backtrace;
1295 objArrayOop _head;
1296 objArrayOop _methods;
1297 typeArrayOop _bcis;
1298 int _index;
1299 No_Safepoint_Verifier _nsv;
1300
1301 public:
1302
1303 enum {
1304 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1305 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1306 trace_next_offset = java_lang_Throwable::trace_next_offset,
1307 trace_size = java_lang_Throwable::trace_size,
1308 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1309 };
1310
1311 // constructor for new backtrace
1312 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1313 expand(CHECK);
1314 _backtrace = _head;
1315 _index = 0;
1316 }
1317
1318 void expand(TRAPS) {
1319 objArrayHandle old_head(THREAD, _head);
1320 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1321
1322 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1323 objArrayHandle new_head(THREAD, head);
1324
1325 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1326 objArrayHandle new_methods(THREAD, methods);
1327
1328 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1329 typeArrayHandle new_bcis(THREAD, bcis);
1330
1331 if (!old_head.is_null()) {
1332 old_head->obj_at_put(trace_next_offset, new_head());
1333 }
1334 new_head->obj_at_put(trace_methods_offset, new_methods());
1335 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1336
1337 _head = new_head();
1338 _methods = new_methods();
1339 _bcis = new_bcis();
1340 _index = 0;
1341 }
1342
1343 oop backtrace() {
1344 return _backtrace();
1345 }
1346
1347 inline void push(methodOop method, short bci, TRAPS) {
1348 if (_index >= trace_chunk_size) {
1349 methodHandle mhandle(THREAD, method);
1350 expand(CHECK);
1351 method = mhandle();
1352 }
1353
1354 _methods->obj_at_put(_index, method);
1355 _bcis->ushort_at_put(_index, bci);
1356 _index++;
1357 }
1358
1359 methodOop current_method() {
1360 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1361 return methodOop(_methods->obj_at(_index));
1362 }
1363
1364 jushort current_bci() {
1365 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1366 return _bcis->ushort_at(_index);
1367 }
1368 };
1369
1370
1371 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1372 if (!StackTraceInThrowable) return;
1373 ResourceMark rm(THREAD);
1374
1375 // Start out by clearing the backtrace for this object, in case the VM
1376 // runs out of memory while allocating the stack trace
1377 set_backtrace(throwable(), NULL);
1378 if (JDK_Version::is_gte_jdk14x_version()) {
1379 // New since 1.4, clear lazily constructed Java level stacktrace if
1380 // refilling occurs
1381 // This is unnecessary in 1.7+ but harmless
1382 clear_stacktrace(throwable());
1383 }
1384
1385 int max_depth = MaxJavaStackTraceDepth;
1386 JavaThread* thread = (JavaThread*)THREAD;
1387 BacktraceBuilder bt(CHECK);
1388
1389 // If there is no Java frame just return the method that was being called
1390 // with bci 0
1391 if (!thread->has_last_Java_frame()) {
1392 if (max_depth >= 1 && method() != NULL) {
1393 bt.push(method(), 0, CHECK);
1394 set_backtrace(throwable(), bt.backtrace());
1395 }
1396 return;
1397 }
1398
1399 // Instead of using vframe directly, this version of fill_in_stack_trace
1400 // basically handles everything by hand. This significantly improved the
1401 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1402 // See bug 6333838 for more details.
1403 // The "ASSERT" here is to verify this method generates the exactly same stack
1404 // trace as utilizing vframe.
1405 #ifdef ASSERT
1406 vframeStream st(thread);
1407 methodHandle st_method(THREAD, st.method());
1408 #endif
1409 int total_count = 0;
1410 RegisterMap map(thread, false);
1411 int decode_offset = 0;
1412 nmethod* nm = NULL;
1413 bool skip_fillInStackTrace_check = false;
1414 bool skip_throwableInit_check = false;
1415
1416 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1417 methodOop method = NULL;
1418 int bci = 0;
1419
1420 // Compiled java method case.
1421 if (decode_offset != 0) {
1422 DebugInfoReadStream stream(nm, decode_offset);
1423 decode_offset = stream.read_int();
1424 method = (methodOop)nm->oop_at(stream.read_int());
1425 bci = stream.read_bci();
1426 } else {
1427 if (fr.is_first_frame()) break;
1428 address pc = fr.pc();
1429 if (fr.is_interpreted_frame()) {
1430 intptr_t bcx = fr.interpreter_frame_bcx();
1431 method = fr.interpreter_frame_method();
1432 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1433 fr = fr.sender(&map);
1434 } else {
1435 CodeBlob* cb = fr.cb();
1436 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1437 // but non nmethod
1438 fr = fr.sender(&map);
1439 if (cb == NULL || !cb->is_nmethod()) {
1440 continue;
1441 }
1442 nm = (nmethod*)cb;
1443 if (nm->method()->is_native()) {
1444 method = nm->method();
1445 bci = 0;
1446 } else {
1447 PcDesc* pd = nm->pc_desc_at(pc);
1448 decode_offset = pd->scope_decode_offset();
1449 // if decode_offset is not equal to 0, it will execute the
1450 // "compiled java method case" at the beginning of the loop.
1451 continue;
1452 }
1453 }
1454 }
1455 #ifdef ASSERT
1456 assert(st_method() == method && st.bci() == bci,
1457 "Wrong stack trace");
1458 st.next();
1459 // vframeStream::method isn't GC-safe so store off a copy
1460 // of the methodOop in case we GC.
1461 if (!st.at_end()) {
1462 st_method = st.method();
1463 }
1464 #endif
1465
1466 // the format of the stacktrace will be:
1467 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1468 // - 0 or more <init> methods for the exception class (skipped)
1469 // - rest of the stack
1470
1471 if (!skip_fillInStackTrace_check) {
1472 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1473 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1474 throwable->is_a(method->method_holder())) {
1475 continue;
1476 }
1477 else {
1478 skip_fillInStackTrace_check = true; // gone past them all
1479 }
1480 }
1481 if (!skip_throwableInit_check) {
1482 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1483
1484 // skip <init> methods of the exception class and superclasses
1485 // This is simlar to classic VM.
1486 if (method->name() == vmSymbols::object_initializer_name() &&
1487 throwable->is_a(method->method_holder())) {
1488 continue;
1489 } else {
1490 // there are none or we've seen them all - either way stop checking
1491 skip_throwableInit_check = true;
1492 }
1493 }
1494 bt.push(method, bci, CHECK);
1495 total_count++;
1496 }
1497
1498 // Put completed stack trace into throwable object
1499 set_backtrace(throwable(), bt.backtrace());
1500 }
1501
1502 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1503 // No-op if stack trace is disabled
1504 if (!StackTraceInThrowable) {
1505 return;
1506 }
1507
1508 // Disable stack traces for some preallocated out of memory errors
1509 if (!Universe::should_fill_in_stack_trace(throwable)) {
1510 return;
1511 }
1512
1513 PRESERVE_EXCEPTION_MARK;
1514
1515 JavaThread* thread = JavaThread::active();
1516 fill_in_stack_trace(throwable, method, thread);
1517 // ignore exceptions thrown during stack trace filling
1518 CLEAR_PENDING_EXCEPTION;
1519 }
1520
1521 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1522 // Allocate stack trace - backtrace is created but not filled in
1523
1524 // No-op if stack trace is disabled
1525 if (!StackTraceInThrowable) return;
1526
1527 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1528 objArrayHandle backtrace (THREAD, h_oop);
1529 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1530 objArrayHandle methods (THREAD, m_oop);
1531 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1532 typeArrayHandle bcis(THREAD, b);
1533
1534 // backtrace has space for one chunk (next is NULL)
1535 backtrace->obj_at_put(trace_methods_offset, methods());
1536 backtrace->obj_at_put(trace_bcis_offset, bcis());
1537 set_backtrace(throwable(), backtrace());
1538 }
1539
1540
1541 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1542 // Fill in stack trace into preallocated backtrace (no GC)
1543
1544 // No-op if stack trace is disabled
1545 if (!StackTraceInThrowable) return;
1546
1547 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1548
1549 oop backtrace = java_lang_Throwable::backtrace(throwable());
1550 assert(backtrace != NULL, "backtrace not preallocated");
1551
1552 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1553 objArrayOop methods = objArrayOop(m);
1554 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1555
1556 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1557 typeArrayOop bcis = typeArrayOop(b);
1558 assert(bcis != NULL, "bci array not preallocated");
1559
1560 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1561
1562 JavaThread* thread = JavaThread::current();
1563 ResourceMark rm(thread);
1564 vframeStream st(thread);
1565
1566 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1567 // methods as preallocated errors aren't created by "java" code.
1568
1569 // fill in as much stack trace as possible
1570 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1571 int chunk_count = 0;
1572
1573 for (;!st.at_end(); st.next()) {
1574 // add element
1575 bcis->ushort_at_put(chunk_count, st.bci());
1576 methods->obj_at_put(chunk_count, st.method());
1577
1578 chunk_count++;
1579
1580 // Bail-out for deep stacks
1581 if (chunk_count >= max_chunks) break;
1582 }
1583
1584 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1585 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1586 // can be removed in a JDK using this JVM version
1587 if (JDK_Version::is_gte_jdk17x_version()) {
1588 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1589 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1590 }
1591
1592 }
1593
1594
1595 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1596 if (throwable == NULL) {
1597 THROW_0(vmSymbols::java_lang_NullPointerException());
1598 }
1599 objArrayOop chunk = objArrayOop(backtrace(throwable));
1600 int depth = 0;
1601 if (chunk != NULL) {
1602 // Iterate over chunks and count full ones
1603 while (true) {
1604 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1605 if (next == NULL) break;
1606 depth += trace_chunk_size;
1607 chunk = next;
1608 }
1609 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1610 // Count element in remaining partial chunk
1611 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1612 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1613 assert(methods != NULL && bcis != NULL, "sanity check");
1614 for (int i = 0; i < methods->length(); i++) {
1615 if (methods->obj_at(i) == NULL) break;
1616 depth++;
1617 }
1618 }
1619 return depth;
1620 }
1621
1622
1623 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1624 if (throwable == NULL) {
1625 THROW_0(vmSymbols::java_lang_NullPointerException());
1626 }
1627 if (index < 0) {
1628 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1629 }
1630 // Compute how many chunks to skip and index into actual chunk
1631 objArrayOop chunk = objArrayOop(backtrace(throwable));
1632 int skip_chunks = index / trace_chunk_size;
1633 int chunk_index = index % trace_chunk_size;
1634 while (chunk != NULL && skip_chunks > 0) {
1635 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1636 skip_chunks--;
1637 }
1638 if (chunk == NULL) {
1639 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1640 }
1641 // Get method,bci from chunk
1642 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1643 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1644 assert(methods != NULL && bcis != NULL, "sanity check");
1645 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1646 int bci = bcis->ushort_at(chunk_index);
1647 // Chunk can be partial full
1648 if (method.is_null()) {
1649 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1650 }
1651
1652 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1653 return element;
1654 }
1655
1656 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1657 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1658 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1659
1660 // Allocate java.lang.StackTraceElement instance
1661 klassOop k = SystemDictionary::StackTraceElement_klass();
1662 assert(k != NULL, "must be loaded in 1.4+");
1663 instanceKlassHandle ik (THREAD, k);
1664 if (ik->should_be_initialized()) {
1665 ik->initialize(CHECK_0);
1666 }
1667
1668 Handle element = ik->allocate_instance_handle(CHECK_0);
1669 // Fill in class name
1670 ResourceMark rm(THREAD);
1671 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1672 oop classname = StringTable::intern((char*) str, CHECK_0);
1673 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1674 // Fill in method name
1675 oop methodname = StringTable::intern(method->name(), CHECK_0);
1676 java_lang_StackTraceElement::set_methodName(element(), methodname);
1677 // Fill in source file name
1678 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1679 oop filename = StringTable::intern(source, CHECK_0);
1680 java_lang_StackTraceElement::set_fileName(element(), filename);
1681 // File in source line number
1682 int line_number;
1683 if (method->is_native()) {
1684 // Negative value different from -1 below, enabling Java code in
1685 // class java.lang.StackTraceElement to distinguish "native" from
1686 // "no LineNumberTable".
1687 line_number = -2;
1688 } else {
1689 // Returns -1 if no LineNumberTable, and otherwise actual line number
1690 line_number = method->line_number_from_bci(bci);
1691 }
1692 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1693
1694 return element();
1695 }
1696
1697
1698 void java_lang_reflect_AccessibleObject::compute_offsets() {
1699 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1700 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1701 }
1702
1703 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1704 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1705 return (jboolean) reflect->bool_field(override_offset);
1706 }
1707
1708 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1709 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1710 reflect->bool_field_put(override_offset, (int) value);
1711 }
1712
1713 void java_lang_reflect_Method::compute_offsets() {
1714 klassOop k = SystemDictionary::reflect_Method_klass();
1715 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1716 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1717 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1718 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1719 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1720 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1721 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1722 // The generic signature and annotations fields are only present in 1.5
1723 signature_offset = -1;
1724 annotations_offset = -1;
1725 parameter_annotations_offset = -1;
1726 annotation_default_offset = -1;
1727 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1728 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1729 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1730 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1731 }
1732
1733 Handle java_lang_reflect_Method::create(TRAPS) {
1734 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1735 klassOop klass = SystemDictionary::reflect_Method_klass();
1736 // This class is eagerly initialized during VM initialization, since we keep a refence
1737 // to one of the methods
1738 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1739 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1740 }
1741
1742 oop java_lang_reflect_Method::clazz(oop reflect) {
1743 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1744 return reflect->obj_field(clazz_offset);
1745 }
1746
1747 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1748 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1749 reflect->obj_field_put(clazz_offset, value);
1750 }
1751
1752 int java_lang_reflect_Method::slot(oop reflect) {
1753 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1754 return reflect->int_field(slot_offset);
1755 }
1756
1757 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1758 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1759 reflect->int_field_put(slot_offset, value);
1760 }
1761
1762 oop java_lang_reflect_Method::name(oop method) {
1763 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1764 return method->obj_field(name_offset);
1765 }
1766
1767 void java_lang_reflect_Method::set_name(oop method, oop value) {
1768 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1769 method->obj_field_put(name_offset, value);
1770 }
1771
1772 oop java_lang_reflect_Method::return_type(oop method) {
1773 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1774 return method->obj_field(returnType_offset);
1775 }
1776
1777 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1778 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1779 method->obj_field_put(returnType_offset, value);
1780 }
1781
1782 oop java_lang_reflect_Method::parameter_types(oop method) {
1783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1784 return method->obj_field(parameterTypes_offset);
1785 }
1786
1787 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1788 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1789 method->obj_field_put(parameterTypes_offset, value);
1790 }
1791
1792 oop java_lang_reflect_Method::exception_types(oop method) {
1793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1794 return method->obj_field(exceptionTypes_offset);
1795 }
1796
1797 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1799 method->obj_field_put(exceptionTypes_offset, value);
1800 }
1801
1802 int java_lang_reflect_Method::modifiers(oop method) {
1803 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1804 return method->int_field(modifiers_offset);
1805 }
1806
1807 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1808 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1809 method->int_field_put(modifiers_offset, value);
1810 }
1811
1812 bool java_lang_reflect_Method::has_signature_field() {
1813 return (signature_offset >= 0);
1814 }
1815
1816 oop java_lang_reflect_Method::signature(oop method) {
1817 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1818 assert(has_signature_field(), "signature field must be present");
1819 return method->obj_field(signature_offset);
1820 }
1821
1822 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1823 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1824 assert(has_signature_field(), "signature field must be present");
1825 method->obj_field_put(signature_offset, value);
1826 }
1827
1828 bool java_lang_reflect_Method::has_annotations_field() {
1829 return (annotations_offset >= 0);
1830 }
1831
1832 oop java_lang_reflect_Method::annotations(oop method) {
1833 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1834 assert(has_annotations_field(), "annotations field must be present");
1835 return method->obj_field(annotations_offset);
1836 }
1837
1838 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1839 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1840 assert(has_annotations_field(), "annotations field must be present");
1841 method->obj_field_put(annotations_offset, value);
1842 }
1843
1844 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1845 return (parameter_annotations_offset >= 0);
1846 }
1847
1848 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1849 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1850 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1851 return method->obj_field(parameter_annotations_offset);
1852 }
1853
1854 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1855 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1856 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1857 method->obj_field_put(parameter_annotations_offset, value);
1858 }
1859
1860 bool java_lang_reflect_Method::has_annotation_default_field() {
1861 return (annotation_default_offset >= 0);
1862 }
1863
1864 oop java_lang_reflect_Method::annotation_default(oop method) {
1865 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1866 assert(has_annotation_default_field(), "annotation default field must be present");
1867 return method->obj_field(annotation_default_offset);
1868 }
1869
1870 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1871 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1872 assert(has_annotation_default_field(), "annotation default field must be present");
1873 method->obj_field_put(annotation_default_offset, value);
1874 }
1875
1876 void java_lang_reflect_Constructor::compute_offsets() {
1877 klassOop k = SystemDictionary::reflect_Constructor_klass();
1878 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1879 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1880 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1881 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1882 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1883 // The generic signature and annotations fields are only present in 1.5
1884 signature_offset = -1;
1885 annotations_offset = -1;
1886 parameter_annotations_offset = -1;
1887 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1888 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1889 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1890 }
1891
1892 Handle java_lang_reflect_Constructor::create(TRAPS) {
1893 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1894 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1895 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1896 instanceKlassHandle klass (THREAD, k);
1897 // Ensure it is initialized
1898 klass->initialize(CHECK_NH);
1899 return klass->allocate_instance_handle(CHECK_NH);
1900 }
1901
1902 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1903 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1904 return reflect->obj_field(clazz_offset);
1905 }
1906
1907 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 reflect->obj_field_put(clazz_offset, value);
1910 }
1911
1912 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1913 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1914 return constructor->obj_field(parameterTypes_offset);
1915 }
1916
1917 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1918 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1919 constructor->obj_field_put(parameterTypes_offset, value);
1920 }
1921
1922 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1923 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1924 return constructor->obj_field(exceptionTypes_offset);
1925 }
1926
1927 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1928 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1929 constructor->obj_field_put(exceptionTypes_offset, value);
1930 }
1931
1932 int java_lang_reflect_Constructor::slot(oop reflect) {
1933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1934 return reflect->int_field(slot_offset);
1935 }
1936
1937 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1938 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1939 reflect->int_field_put(slot_offset, value);
1940 }
1941
1942 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1943 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1944 return constructor->int_field(modifiers_offset);
1945 }
1946
1947 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1948 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1949 constructor->int_field_put(modifiers_offset, value);
1950 }
1951
1952 bool java_lang_reflect_Constructor::has_signature_field() {
1953 return (signature_offset >= 0);
1954 }
1955
1956 oop java_lang_reflect_Constructor::signature(oop constructor) {
1957 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1958 assert(has_signature_field(), "signature field must be present");
1959 return constructor->obj_field(signature_offset);
1960 }
1961
1962 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
1963 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1964 assert(has_signature_field(), "signature field must be present");
1965 constructor->obj_field_put(signature_offset, value);
1966 }
1967
1968 bool java_lang_reflect_Constructor::has_annotations_field() {
1969 return (annotations_offset >= 0);
1970 }
1971
1972 oop java_lang_reflect_Constructor::annotations(oop constructor) {
1973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1974 assert(has_annotations_field(), "annotations field must be present");
1975 return constructor->obj_field(annotations_offset);
1976 }
1977
1978 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
1979 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1980 assert(has_annotations_field(), "annotations field must be present");
1981 constructor->obj_field_put(annotations_offset, value);
1982 }
1983
1984 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
1985 return (parameter_annotations_offset >= 0);
1986 }
1987
1988 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
1989 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1990 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1991 return method->obj_field(parameter_annotations_offset);
1992 }
1993
1994 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
1995 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1996 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1997 method->obj_field_put(parameter_annotations_offset, value);
1998 }
1999
2000 void java_lang_reflect_Field::compute_offsets() {
2001 klassOop k = SystemDictionary::reflect_Field_klass();
2002 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2003 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2004 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2005 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2006 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2007 // The generic signature and annotations fields are only present in 1.5
2008 signature_offset = -1;
2009 annotations_offset = -1;
2010 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2011 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2012 }
2013
2014 Handle java_lang_reflect_Field::create(TRAPS) {
2015 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2016 Symbol* name = vmSymbols::java_lang_reflect_Field();
2017 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2018 instanceKlassHandle klass (THREAD, k);
2019 // Ensure it is initialized
2020 klass->initialize(CHECK_NH);
2021 return klass->allocate_instance_handle(CHECK_NH);
2022 }
2023
2024 oop java_lang_reflect_Field::clazz(oop reflect) {
2025 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2026 return reflect->obj_field(clazz_offset);
2027 }
2028
2029 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2030 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2031 reflect->obj_field_put(clazz_offset, value);
2032 }
2033
2034 oop java_lang_reflect_Field::name(oop field) {
2035 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2036 return field->obj_field(name_offset);
2037 }
2038
2039 void java_lang_reflect_Field::set_name(oop field, oop value) {
2040 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2041 field->obj_field_put(name_offset, value);
2042 }
2043
2044 oop java_lang_reflect_Field::type(oop field) {
2045 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2046 return field->obj_field(type_offset);
2047 }
2048
2049 void java_lang_reflect_Field::set_type(oop field, oop value) {
2050 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2051 field->obj_field_put(type_offset, value);
2052 }
2053
2054 int java_lang_reflect_Field::slot(oop reflect) {
2055 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2056 return reflect->int_field(slot_offset);
2057 }
2058
2059 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2060 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2061 reflect->int_field_put(slot_offset, value);
2062 }
2063
2064 int java_lang_reflect_Field::modifiers(oop field) {
2065 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2066 return field->int_field(modifiers_offset);
2067 }
2068
2069 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2070 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2071 field->int_field_put(modifiers_offset, value);
2072 }
2073
2074 bool java_lang_reflect_Field::has_signature_field() {
2075 return (signature_offset >= 0);
2076 }
2077
2078 oop java_lang_reflect_Field::signature(oop field) {
2079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2080 assert(has_signature_field(), "signature field must be present");
2081 return field->obj_field(signature_offset);
2082 }
2083
2084 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2085 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2086 assert(has_signature_field(), "signature field must be present");
2087 field->obj_field_put(signature_offset, value);
2088 }
2089
2090 bool java_lang_reflect_Field::has_annotations_field() {
2091 return (annotations_offset >= 0);
2092 }
2093
2094 oop java_lang_reflect_Field::annotations(oop field) {
2095 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2096 assert(has_annotations_field(), "annotations field must be present");
2097 return field->obj_field(annotations_offset);
2098 }
2099
2100 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2101 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2102 assert(has_annotations_field(), "annotations field must be present");
2103 field->obj_field_put(annotations_offset, value);
2104 }
2105
2106
2107 void sun_reflect_ConstantPool::compute_offsets() {
2108 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2109 // This null test can be removed post beta
2110 if (k != NULL) {
2111 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2112 }
2113 }
2114
2115
2116 Handle sun_reflect_ConstantPool::create(TRAPS) {
2117 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2118 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2119 instanceKlassHandle klass (THREAD, k);
2120 // Ensure it is initialized
2121 klass->initialize(CHECK_NH);
2122 return klass->allocate_instance_handle(CHECK_NH);
2123 }
2124
2125
2126 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2128 return reflect->obj_field(_cp_oop_offset);
2129 }
2130
2131
2132 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2133 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2134 reflect->obj_field_put(_cp_oop_offset, value);
2135 }
2136
2137 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2138 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2139 // This null test can be removed post beta
2140 if (k != NULL) {
2141 compute_offset(_base_offset, k,
2142 vmSymbols::base_name(), vmSymbols::object_signature());
2143 }
2144 }
2145
2146 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2147 klassOop k = SystemDictionary::box_klass(type);
2148 if (k == NULL) return NULL;
2149 instanceKlassHandle h (THREAD, k);
2150 if (!h->is_initialized()) h->initialize(CHECK_0);
2151 return h->allocate_instance(THREAD);
2152 }
2153
2154
2155 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2156 oop box = initialize_and_allocate(type, CHECK_0);
2157 if (box == NULL) return NULL;
2158 switch (type) {
2159 case T_BOOLEAN:
2160 box->bool_field_put(value_offset, value->z);
2161 break;
2162 case T_CHAR:
2163 box->char_field_put(value_offset, value->c);
2164 break;
2165 case T_FLOAT:
2166 box->float_field_put(value_offset, value->f);
2167 break;
2168 case T_DOUBLE:
2169 box->double_field_put(long_value_offset, value->d);
2170 break;
2171 case T_BYTE:
2172 box->byte_field_put(value_offset, value->b);
2173 break;
2174 case T_SHORT:
2175 box->short_field_put(value_offset, value->s);
2176 break;
2177 case T_INT:
2178 box->int_field_put(value_offset, value->i);
2179 break;
2180 case T_LONG:
2181 box->long_field_put(long_value_offset, value->j);
2182 break;
2183 default:
2184 return NULL;
2185 }
2186 return box;
2187 }
2188
2189
2190 BasicType java_lang_boxing_object::basic_type(oop box) {
2191 if (box == NULL) return T_ILLEGAL;
2192 BasicType type = SystemDictionary::box_klass_type(box->klass());
2193 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2194 return T_ILLEGAL;
2195 return type;
2196 }
2197
2198
2199 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2200 BasicType type = SystemDictionary::box_klass_type(box->klass());
2201 switch (type) {
2202 case T_BOOLEAN:
2203 value->z = box->bool_field(value_offset);
2204 break;
2205 case T_CHAR:
2206 value->c = box->char_field(value_offset);
2207 break;
2208 case T_FLOAT:
2209 value->f = box->float_field(value_offset);
2210 break;
2211 case T_DOUBLE:
2212 value->d = box->double_field(long_value_offset);
2213 break;
2214 case T_BYTE:
2215 value->b = box->byte_field(value_offset);
2216 break;
2217 case T_SHORT:
2218 value->s = box->short_field(value_offset);
2219 break;
2220 case T_INT:
2221 value->i = box->int_field(value_offset);
2222 break;
2223 case T_LONG:
2224 value->j = box->long_field(long_value_offset);
2225 break;
2226 default:
2227 return T_ILLEGAL;
2228 } // end switch
2229 return type;
2230 }
2231
2232
2233 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2234 BasicType type = SystemDictionary::box_klass_type(box->klass());
2235 switch (type) {
2236 case T_BOOLEAN:
2237 box->bool_field_put(value_offset, value->z);
2238 break;
2239 case T_CHAR:
2240 box->char_field_put(value_offset, value->c);
2241 break;
2242 case T_FLOAT:
2243 box->float_field_put(value_offset, value->f);
2244 break;
2245 case T_DOUBLE:
2246 box->double_field_put(long_value_offset, value->d);
2247 break;
2248 case T_BYTE:
2249 box->byte_field_put(value_offset, value->b);
2250 break;
2251 case T_SHORT:
2252 box->short_field_put(value_offset, value->s);
2253 break;
2254 case T_INT:
2255 box->int_field_put(value_offset, value->i);
2256 break;
2257 case T_LONG:
2258 box->long_field_put(long_value_offset, value->j);
2259 break;
2260 default:
2261 return T_ILLEGAL;
2262 } // end switch
2263 return type;
2264 }
2265
2266
2267 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2268 switch (type) {
2269 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2270 case T_CHAR: st->print("%d", value->c); break;
2271 case T_BYTE: st->print("%d", value->b); break;
2272 case T_SHORT: st->print("%d", value->s); break;
2273 case T_INT: st->print("%d", value->i); break;
2274 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2275 case T_FLOAT: st->print("%f", value->f); break;
2276 case T_DOUBLE: st->print("%lf", value->d); break;
2277 default: st->print("type %d?", type); break;
2278 }
2279 }
2280
2281
2282 // Support for java_lang_ref_Reference
2283 oop java_lang_ref_Reference::pending_list_lock() {
2284 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2285 address addr = ik->static_field_addr(static_lock_offset);
2286 if (UseCompressedOops) {
2287 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2288 } else {
2289 return oopDesc::load_decode_heap_oop((oop*)addr);
2290 }
2291 }
2292
2293 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2294 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2295 address addr = ik->static_field_addr(static_pending_offset);
2296 // XXX This might not be HeapWord aligned, almost rather be char *.
2297 return (HeapWord*)addr;
2298 }
2299
2300 oop java_lang_ref_Reference::pending_list() {
2301 char *addr = (char *)pending_list_addr();
2302 if (UseCompressedOops) {
2303 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2304 } else {
2305 return oopDesc::load_decode_heap_oop((oop*)addr);
2306 }
2307 }
2308
2309
2310 // Support for java_lang_ref_SoftReference
2311
2312 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2313 return ref->long_field(timestamp_offset);
2314 }
2315
2316 jlong java_lang_ref_SoftReference::clock() {
2317 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2318 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2319 return *offset;
2320 }
2321
2322 void java_lang_ref_SoftReference::set_clock(jlong value) {
2323 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2324 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2325 *offset = value;
2326 }
2327
2328
2329 // Support for java_lang_invoke_MethodHandle
2330
2331 int java_lang_invoke_MethodHandle::_type_offset;
2332 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2333 int java_lang_invoke_MethodHandle::_vmentry_offset;
2334
2335 int java_lang_invoke_MemberName::_clazz_offset;
2336 int java_lang_invoke_MemberName::_name_offset;
2337 int java_lang_invoke_MemberName::_type_offset;
2338 int java_lang_invoke_MemberName::_flags_offset;
2339 int java_lang_invoke_MemberName::_vmtarget_offset;
2340 int java_lang_invoke_MemberName::_vmindex_offset;
2341
2342 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2343
2344 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2345 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2346
2347 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2348
2349 int java_lang_invoke_CountingMethodHandle::_vmcount_offset;
2350
2351 void java_lang_invoke_MethodHandle::compute_offsets() {
2352 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2353 if (klass_oop != NULL && EnableInvokeDynamic) {
2354 bool allow_super = false;
2355 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2356 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2357 }
2358 }
2359
2360 void java_lang_invoke_MemberName::compute_offsets() {
2361 klassOop klass_oop = SystemDictionary::MemberName_klass();
2362 if (klass_oop != NULL && EnableInvokeDynamic) {
2363 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2364 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2365 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2366 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2367 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2368 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2369 }
2370 }
2371
2372 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2373 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2374 if (k != NULL && EnableInvokeDynamic) {
2375 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2376 }
2377 }
2378
2379 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2380 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2381 if (k != NULL && EnableInvokeDynamic) {
2382 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2383 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2384 }
2385 }
2386
2387 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2388 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2389 if (k != NULL && EnableInvokeDynamic) {
2390 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2391 }
2392 }
2393
2394 void java_lang_invoke_CountingMethodHandle::compute_offsets() {
2395 klassOop k = SystemDictionary::CountingMethodHandle_klass();
2396 if (k != NULL && EnableInvokeDynamic) {
2397 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true);
2398 }
2399 }
2400
2401 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) {
2402 assert(is_instance(mh), "CMH only");
2403 return mh->int_field(_vmcount_offset);
2404 }
2405
2406 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) {
2407 assert(is_instance(mh), "CMH only");
2408 mh->int_field_put(_vmcount_offset, count);
2409 }
2410
2411 oop java_lang_invoke_MethodHandle::type(oop mh) {
2412 return mh->obj_field(_type_offset);
2413 }
2414
2415 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2416 mh->obj_field_put(_type_offset, mtype);
2417 }
2418
2419 // fetch type.form.vmslots, which is the number of JVM stack slots
2420 // required to carry the arguments of this MH
2421 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2422 oop mtype = type(mh);
2423 if (mtype == NULL) return 0; // Java code would get NPE
2424 oop form = java_lang_invoke_MethodType::form(mtype);
2425 if (form == NULL) return 0; // Java code would get NPE
2426 return java_lang_invoke_MethodTypeForm::vmslots(form);
2427 }
2428
2429 // fetch the low-level entry point for this mh
2430 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2431 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2432 }
2433
2434 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2435 assert(_vmentry_offset != 0, "must be present");
2436
2437 // This is always the final step that initializes a valid method handle:
2438 mh->release_address_field_put(_vmentry_offset, (address) me);
2439
2440 // There should be enough memory barriers on exit from native methods
2441 // to ensure that the MH is fully initialized to all threads before
2442 // Java code can publish it in global data structures.
2443 // But just in case, we use release_address_field_put.
2444 }
2445
2446 /// MemberName accessors
2447
2448 oop java_lang_invoke_MemberName::clazz(oop mname) {
2449 assert(is_instance(mname), "wrong type");
2450 return mname->obj_field(_clazz_offset);
2451 }
2452
2453 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2454 assert(is_instance(mname), "wrong type");
2455 mname->obj_field_put(_clazz_offset, clazz);
2456 }
2457
2458 oop java_lang_invoke_MemberName::name(oop mname) {
2459 assert(is_instance(mname), "wrong type");
2460 return mname->obj_field(_name_offset);
2461 }
2462
2463 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2464 assert(is_instance(mname), "wrong type");
2465 mname->obj_field_put(_name_offset, name);
2466 }
2467
2468 oop java_lang_invoke_MemberName::type(oop mname) {
2469 assert(is_instance(mname), "wrong type");
2470 return mname->obj_field(_type_offset);
2471 }
2472
2473 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2474 assert(is_instance(mname), "wrong type");
2475 mname->obj_field_put(_type_offset, type);
2476 }
2477
2478 int java_lang_invoke_MemberName::flags(oop mname) {
2479 assert(is_instance(mname), "wrong type");
2480 return mname->int_field(_flags_offset);
2481 }
2482
2483 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2484 assert(is_instance(mname), "wrong type");
2485 mname->int_field_put(_flags_offset, flags);
2486 }
2487
2488 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2489 assert(is_instance(mname), "wrong type");
2490 return mname->obj_field(_vmtarget_offset);
2491 }
2492
2493 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2494 assert(is_instance(mname), "wrong type");
2495 mname->obj_field_put(_vmtarget_offset, ref);
2496 }
2497
2498 int java_lang_invoke_MemberName::vmindex(oop mname) {
2499 assert(is_instance(mname), "wrong type");
2500 return mname->int_field(_vmindex_offset);
2501 }
2502
2503 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2504 assert(is_instance(mname), "wrong type");
2505 mname->int_field_put(_vmindex_offset, index);
2506 }
2507
2508 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2509 assert(is_instance(mh), "MH only");
2510 return mh->obj_field(_vmtarget_offset);
2511 }
2512
2513 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2514 assert(is_instance(mh), "MH only");
2515 mh->obj_field_put(_vmtarget_offset, ref);
2516 }
2517
2518 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2519 assert(is_instance(mh), "DMH only");
2520 return mh->int_field(_vmindex_offset);
2521 }
2522
2523 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2524 assert(is_instance(mh), "DMH only");
2525 mh->int_field_put(_vmindex_offset, index);
2526 }
2527
2528 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2529 assert(is_instance(mh), "BMH only");
2530 return mh->int_field(_vmargslot_offset);
2531 }
2532
2533 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2534 assert(is_instance(mh), "BMH only");
2535 return mh->obj_field(_argument_offset);
2536 }
2537
2538 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2539 assert(is_instance(mh), "AMH only");
2540 return mh->int_field(_conversion_offset);
2541 }
2542
2543 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2544 assert(is_instance(mh), "AMH only");
2545 mh->int_field_put(_conversion_offset, conv);
2546 }
2547
2548
2549 // Support for java_lang_invoke_MethodType
2550
2551 int java_lang_invoke_MethodType::_rtype_offset;
2552 int java_lang_invoke_MethodType::_ptypes_offset;
2553 int java_lang_invoke_MethodType::_form_offset;
2554
2555 void java_lang_invoke_MethodType::compute_offsets() {
2556 klassOop k = SystemDictionary::MethodType_klass();
2557 if (k != NULL) {
2558 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2559 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2560 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2561 }
2562 }
2563
2564 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2565 st->print("(");
2566 objArrayOop pts = ptypes(mt);
2567 for (int i = 0, limit = pts->length(); i < limit; i++) {
2568 java_lang_Class::print_signature(pts->obj_at(i), st);
2569 }
2570 st->print(")");
2571 java_lang_Class::print_signature(rtype(mt), st);
2572 }
2573
2574 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2575 ResourceMark rm;
2576 stringStream buffer(128);
2577 print_signature(mt, &buffer);
2578 const char* sigstr = buffer.base();
2579 int siglen = (int) buffer.size();
2580 Symbol *name;
2581 if (!intern_if_not_found) {
2582 name = SymbolTable::probe(sigstr, siglen);
2583 } else {
2584 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2585 }
2586 return name;
2587 }
2588
2589 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2590 if (rtype(mt1) != rtype(mt2))
2591 return false;
2592 if (ptype_count(mt1) != ptype_count(mt2))
2593 return false;
2594 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2595 if (ptype(mt1, i) != ptype(mt2, i))
2596 return false;
2597 }
2598 return true;
2599 }
2600
2601 oop java_lang_invoke_MethodType::rtype(oop mt) {
2602 assert(is_instance(mt), "must be a MethodType");
2603 return mt->obj_field(_rtype_offset);
2604 }
2605
2606 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2607 assert(is_instance(mt), "must be a MethodType");
2608 return (objArrayOop) mt->obj_field(_ptypes_offset);
2609 }
2610
2611 oop java_lang_invoke_MethodType::form(oop mt) {
2612 assert(is_instance(mt), "must be a MethodType");
2613 return mt->obj_field(_form_offset);
2614 }
2615
2616 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2617 return ptypes(mt)->obj_at(idx);
2618 }
2619
2620 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2621 return ptypes(mt)->length();
2622 }
2623
2624
2625
2626 // Support for java_lang_invoke_MethodTypeForm
2627
2628 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2629 int java_lang_invoke_MethodTypeForm::_vmlayout_offset;
2630 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2631 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2632
2633 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2634 klassOop k = SystemDictionary::MethodTypeForm_klass();
2635 if (k != NULL) {
2636 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2637 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature());
2638 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2639 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2640 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2641 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2642 }
2643 }
2644
2645 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2646 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2647 assert(_vmslots_offset > 0, "");
2648 return mtform->int_field(_vmslots_offset);
2649 }
2650
2651 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) {
2652 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2653 assert(_vmlayout_offset > 0, "");
2654 return mtform->obj_field(_vmlayout_offset);
2655 }
2656
2657 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) {
2658 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2659 oop previous = vmlayout(mtform);
2660 if (previous != NULL) {
2661 return previous; // someone else beat us to it
2662 }
2663 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset);
2664 OrderAccess::storestore(); // make sure our copy is fully committed
2665 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous);
2666 if (previous != NULL) {
2667 return previous; // someone else beat us to it
2668 }
2669 return cookie;
2670 }
2671
2672 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2673 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2674 return mtform->obj_field(_erasedType_offset);
2675 }
2676
2677 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2678 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2679 return mtform->obj_field(_genericInvoker_offset);
2680 }
2681
2682
2683 // Support for java_lang_invoke_CallSite
2684
2685 int java_lang_invoke_CallSite::_target_offset;
2686
2687 void java_lang_invoke_CallSite::compute_offsets() {
2688 if (!EnableInvokeDynamic) return;
2689 klassOop k = SystemDictionary::CallSite_klass();
2690 if (k != NULL) {
2691 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2692 }
2693
2694 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile
2695 // (For C2: keep this until we have throttling logic for uncommon traps.)
2696 if (k != NULL) {
2697 instanceKlass* ik = instanceKlass::cast(k);
2698 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature());
2699 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature());
2700 guarantee(m_normal != NULL && m_volatile != NULL, "must exist");
2701 m_normal->set_not_compilable_quietly();
2702 m_volatile->set_not_compilable_quietly();
2703 }
2704 }
2705
2706
2707 // Support for java_security_AccessControlContext
2708
2709 int java_security_AccessControlContext::_context_offset = 0;
2710 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2711 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2712
2713 void java_security_AccessControlContext::compute_offsets() {
2714 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2715 fieldDescriptor fd;
2716 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2717
2718 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2719 fatal("Invalid layout of java.security.AccessControlContext");
2720 }
2721 _context_offset = fd.offset();
2722
2723 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2724 fatal("Invalid layout of java.security.AccessControlContext");
2725 }
2726 _privilegedContext_offset = fd.offset();
2727
2728 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2729 fatal("Invalid layout of java.security.AccessControlContext");
2730 }
2731 _isPrivileged_offset = fd.offset();
2732 }
2733
2734
2735 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2736 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2737 // Ensure klass is initialized
2738 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2739 // Allocate result
2740 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2741 // Fill in values
2742 result->obj_field_put(_context_offset, context());
2743 result->obj_field_put(_privilegedContext_offset, privileged_context());
2744 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2745 return result;
2746 }
2747
2748
2749 // Support for java_lang_ClassLoader
2750 bool java_lang_ClassLoader::offsets_computed = false;
2751 int java_lang_ClassLoader::parallelCapable_offset = -1;
2752
2753 void java_lang_ClassLoader::compute_offsets() {
2754 assert(!offsets_computed, "offsets should be initialized only once");
2755 offsets_computed = true;
2756
2757 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2758 klassOop k1 = SystemDictionary::ClassLoader_klass();
2759 compute_optional_offset(parallelCapable_offset,
2760 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2761 }
2762
2763 oop java_lang_ClassLoader::parent(oop loader) {
2764 assert(loader->is_oop(), "loader must be oop");
2765 return loader->obj_field(parent_offset);
2766 }
2767
2768
2769 // For class loader classes, parallelCapable defined
2770 // based on non-null field
2771 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2772 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2773 if (!JDK_Version::is_gte_jdk17x_version()
2774 || parallelCapable_offset == -1) {
2775 // Default for backward compatibility is false
2776 return false;
2777 }
2778 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2779 }
2780
2781 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2782 // Fix for 4474172; see evaluation for more details
2783 loader = non_reflection_class_loader(loader);
2784
2785 oop cl = SystemDictionary::java_system_loader();
2786 while(cl != NULL) {
2787 if (cl == loader) return true;
2788 cl = parent(cl);
2789 }
2790 return false;
2791 }
2792
2793 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2794 if (loader != NULL) {
2795 // See whether this is one of the class loaders associated with
2796 // the generated bytecodes for reflection, and if so, "magically"
2797 // delegate to its parent to prevent class loading from occurring
2798 // in places where applications using reflection didn't expect it.
2799 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2800 // This might be null in non-1.4 JDKs
2801 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2802 return parent(loader);
2803 }
2804 }
2805 return loader;
2806 }
2807
2808
2809 // Support for java_lang_System
2810 int java_lang_System::in_offset_in_bytes() {
2811 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2812 }
2813
2814
2815 int java_lang_System::out_offset_in_bytes() {
2816 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2817 }
2818
2819
2820 int java_lang_System::err_offset_in_bytes() {
2821 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2822 }
2823
2824
2825
2826 int java_lang_String::value_offset;
2827 int java_lang_String::offset_offset;
2828 int java_lang_String::count_offset;
2829 int java_lang_String::hash_offset;
2830 int java_lang_Class::_klass_offset;
2831 int java_lang_Class::_array_klass_offset;
2832 int java_lang_Class::_resolved_constructor_offset;
2833 int java_lang_Class::_oop_size_offset;
2834 int java_lang_Class::_static_oop_field_count_offset;
2835 int java_lang_Throwable::backtrace_offset;
2836 int java_lang_Throwable::detailMessage_offset;
2837 int java_lang_Throwable::cause_offset;
2838 int java_lang_Throwable::stackTrace_offset;
2839 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2840 int java_lang_reflect_AccessibleObject::override_offset;
2841 int java_lang_reflect_Method::clazz_offset;
2842 int java_lang_reflect_Method::name_offset;
2843 int java_lang_reflect_Method::returnType_offset;
2844 int java_lang_reflect_Method::parameterTypes_offset;
2845 int java_lang_reflect_Method::exceptionTypes_offset;
2846 int java_lang_reflect_Method::slot_offset;
2847 int java_lang_reflect_Method::modifiers_offset;
2848 int java_lang_reflect_Method::signature_offset;
2849 int java_lang_reflect_Method::annotations_offset;
2850 int java_lang_reflect_Method::parameter_annotations_offset;
2851 int java_lang_reflect_Method::annotation_default_offset;
2852 int java_lang_reflect_Constructor::clazz_offset;
2853 int java_lang_reflect_Constructor::parameterTypes_offset;
2854 int java_lang_reflect_Constructor::exceptionTypes_offset;
2855 int java_lang_reflect_Constructor::slot_offset;
2856 int java_lang_reflect_Constructor::modifiers_offset;
2857 int java_lang_reflect_Constructor::signature_offset;
2858 int java_lang_reflect_Constructor::annotations_offset;
2859 int java_lang_reflect_Constructor::parameter_annotations_offset;
2860 int java_lang_reflect_Field::clazz_offset;
2861 int java_lang_reflect_Field::name_offset;
2862 int java_lang_reflect_Field::type_offset;
2863 int java_lang_reflect_Field::slot_offset;
2864 int java_lang_reflect_Field::modifiers_offset;
2865 int java_lang_reflect_Field::signature_offset;
2866 int java_lang_reflect_Field::annotations_offset;
2867 int java_lang_boxing_object::value_offset;
2868 int java_lang_boxing_object::long_value_offset;
2869 int java_lang_ref_Reference::referent_offset;
2870 int java_lang_ref_Reference::queue_offset;
2871 int java_lang_ref_Reference::next_offset;
2872 int java_lang_ref_Reference::discovered_offset;
2873 int java_lang_ref_Reference::static_lock_offset;
2874 int java_lang_ref_Reference::static_pending_offset;
2875 int java_lang_ref_Reference::number_of_fake_oop_fields;
2876 int java_lang_ref_SoftReference::timestamp_offset;
2877 int java_lang_ref_SoftReference::static_clock_offset;
2878 int java_lang_ClassLoader::parent_offset;
2879 int java_lang_System::static_in_offset;
2880 int java_lang_System::static_out_offset;
2881 int java_lang_System::static_err_offset;
2882 int java_lang_StackTraceElement::declaringClass_offset;
2883 int java_lang_StackTraceElement::methodName_offset;
2884 int java_lang_StackTraceElement::fileName_offset;
2885 int java_lang_StackTraceElement::lineNumber_offset;
2886 int java_lang_AssertionStatusDirectives::classes_offset;
2887 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2888 int java_lang_AssertionStatusDirectives::packages_offset;
2889 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2890 int java_lang_AssertionStatusDirectives::deflt_offset;
2891 int java_nio_Buffer::_limit_offset;
2892 int sun_misc_AtomicLongCSImpl::_value_offset;
2893 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2894 int sun_reflect_ConstantPool::_cp_oop_offset;
2895 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2896
2897
2898 // Support for java_lang_StackTraceElement
2899
2900 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2901 element->obj_field_put(fileName_offset, value);
2902 }
2903
2904 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2905 element->obj_field_put(declaringClass_offset, value);
2906 }
2907
2908 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2909 element->obj_field_put(methodName_offset, value);
2910 }
2911
2912 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2913 element->int_field_put(lineNumber_offset, value);
2914 }
2915
2916
2917 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2918
2919 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2920 o->obj_field_put(classes_offset, val);
2921 }
2922
2923 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2924 o->obj_field_put(classEnabled_offset, val);
2925 }
2926
2927 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2928 o->obj_field_put(packages_offset, val);
2929 }
2930
2931 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2932 o->obj_field_put(packageEnabled_offset, val);
2933 }
2934
2935 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2936 o->bool_field_put(deflt_offset, val);
2937 }
2938
2939
2940 // Support for intrinsification of java.nio.Buffer.checkIndex
2941 int java_nio_Buffer::limit_offset() {
2942 return _limit_offset;
2943 }
2944
2945
2946 void java_nio_Buffer::compute_offsets() {
2947 klassOop k = SystemDictionary::nio_Buffer_klass();
2948 assert(k != NULL, "must be loaded in 1.4+");
2949 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2950 }
2951
2952 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
2953 int sun_misc_AtomicLongCSImpl::value_offset() {
2954 assert(SystemDictionary::AtomicLongCSImpl_klass() != NULL, "can't call this");
2955 return _value_offset;
2956 }
2957
2958
2959 void sun_misc_AtomicLongCSImpl::compute_offsets() {
2960 klassOop k = SystemDictionary::AtomicLongCSImpl_klass();
2961 // If this class is not present, its value field offset won't be referenced.
2962 if (k != NULL) {
2963 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
2964 }
2965 }
2966
2967 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2968 if (_owner_offset != 0) return;
2969
2970 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2971 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2972 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
2973 compute_offset(_owner_offset, k,
2974 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2975 }
2976
2977 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2978 assert(_owner_offset != 0, "Must be initialized");
2979 return obj->obj_field(_owner_offset);
2980 }
2981
2982 // Compute hard-coded offsets
2983 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2984 // are not available to determine the offset_of_static_fields.
2985 void JavaClasses::compute_hard_coded_offsets() {
2986 const int x = heapOopSize;
2987 const int header = instanceOopDesc::base_offset_in_bytes();
2988
2989 // Do the String Class
2990 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header;
2991 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header;
2992 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint);
2993 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint);
2994
2995 // Throwable Class
2996 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
2997 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
2998 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
2999 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3000 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3001
3002 // java_lang_boxing_object
3003 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3004 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3005
3006 // java_lang_ref_Reference:
3007 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3008 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3009 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3010 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3011 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3012 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3013 // Artificial fields for java_lang_ref_Reference
3014 // The first field is for the discovered field added in 1.4
3015 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3016
3017 // java_lang_ref_SoftReference Class
3018 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3019 // Don't multiply static fields because they are always in wordSize units
3020 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3021
3022 // java_lang_ClassLoader
3023 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3024
3025 // java_lang_System
3026 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3027 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3028 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3029
3030 // java_lang_StackTraceElement
3031 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3032 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3033 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3034 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3035 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3036 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3037 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3038 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3039 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3040
3041 }
3042
3043
3044 // Compute non-hard-coded field offsets of all the classes in this file
3045 void JavaClasses::compute_offsets() {
3046 // java_lang_Class::compute_offsets was called earlier in bootstrap
3047 java_lang_ClassLoader::compute_offsets();
3048 java_lang_Thread::compute_offsets();
3049 java_lang_ThreadGroup::compute_offsets();
3050 if (EnableInvokeDynamic) {
3051 java_lang_invoke_MethodHandle::compute_offsets();
3052 java_lang_invoke_MemberName::compute_offsets();
3053 java_lang_invoke_DirectMethodHandle::compute_offsets();
3054 java_lang_invoke_BoundMethodHandle::compute_offsets();
3055 java_lang_invoke_AdapterMethodHandle::compute_offsets();
3056 java_lang_invoke_MethodType::compute_offsets();
3057 java_lang_invoke_MethodTypeForm::compute_offsets();
3058 java_lang_invoke_CallSite::compute_offsets();
3059 java_lang_invoke_CountingMethodHandle::compute_offsets();
3060 }
3061 java_security_AccessControlContext::compute_offsets();
3062 // Initialize reflection classes. The layouts of these classes
3063 // changed with the new reflection implementation in JDK 1.4, and
3064 // since the Universe doesn't know what JDK version it is until this
3065 // point we defer computation of these offsets until now.
3066 java_lang_reflect_AccessibleObject::compute_offsets();
3067 java_lang_reflect_Method::compute_offsets();
3068 java_lang_reflect_Constructor::compute_offsets();
3069 java_lang_reflect_Field::compute_offsets();
3070 if (JDK_Version::is_gte_jdk14x_version()) {
3071 java_nio_Buffer::compute_offsets();
3072 }
3073 if (JDK_Version::is_gte_jdk15x_version()) {
3074 sun_reflect_ConstantPool::compute_offsets();
3075 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3076 }
3077 sun_misc_AtomicLongCSImpl::compute_offsets();
3078
3079 // generated interpreter code wants to know about the offsets we just computed:
3080 AbstractAssembler::update_delayed_values();
3081 }
3082
3083 #ifndef PRODUCT
3084
3085 // These functions exist to assert the validity of hard-coded field offsets to guard
3086 // against changes in the class files
3087
3088 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3089 EXCEPTION_MARK;
3090 fieldDescriptor fd;
3091 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3092 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3093 instanceKlassHandle h_klass (THREAD, k);
3094 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3095 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3096 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3097 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3098 return false;
3099 }
3100 if (fd.is_static()) {
3101 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3102 return false;
3103 }
3104 if (fd.offset() == hardcoded_offset ) {
3105 return true;
3106 } else {
3107 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3108 klass_name, field_name, hardcoded_offset, fd.offset());
3109 return false;
3110 }
3111 }
3112
3113
3114 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3115 EXCEPTION_MARK;
3116 fieldDescriptor fd;
3117 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3118 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3119 instanceKlassHandle h_klass (THREAD, k);
3120 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3121 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3122 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3123 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3124 return false;
3125 }
3126 if (!fd.is_static()) {
3127 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3128 return false;
3129 }
3130 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3131 return true;
3132 } else {
3133 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());
3134 return false;
3135 }
3136 }
3137
3138
3139 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3140 EXCEPTION_MARK;
3141 fieldDescriptor fd;
3142 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3143 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3144 instanceKlassHandle h_klass (THREAD, k);
3145 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3146 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3147 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3148 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3149 return false;
3150 }
3151 if (!fd.is_static() || !fd.has_initial_value()) {
3152 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3153 return false;
3154 }
3155 if (!fd.initial_value_tag().is_int()) {
3156 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3157 return false;
3158 }
3159 jint field_value = fd.int_initial_value();
3160 if (field_value == hardcoded_constant) {
3161 return true;
3162 } else {
3163 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);
3164 return false;
3165 }
3166 }
3167
3168
3169 // Check the hard-coded field offsets of all the classes in this file
3170
3171 void JavaClasses::check_offsets() {
3172 bool valid = true;
3173
3174 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3175 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3176
3177 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3178 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3179
3180 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3181 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3182
3183 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3184 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3185
3186 // java.lang.String
3187
3188 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3189 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3190 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3191 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3192
3193 // java.lang.Class
3194
3195 // Fake fields
3196 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3197 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3198 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3199
3200 // java.lang.Throwable
3201
3202 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3203 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3204 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3205 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3206
3207 // Boxed primitive objects (java_lang_boxing_object)
3208
3209 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3210 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3211 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3212 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3213 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3214 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3215 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3216 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3217
3218 // java.lang.ClassLoader
3219
3220 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3221
3222 // java.lang.System
3223
3224 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3225 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3226 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3227
3228 // java.lang.StackTraceElement
3229
3230 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3231 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3232 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3233 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3234
3235 // java.lang.ref.Reference
3236
3237 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3238 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3239 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3240 // Fake field
3241 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3242 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3243 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3244
3245 // java.lang.ref.SoftReference
3246
3247 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3248 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3249
3250 // java.lang.AssertionStatusDirectives
3251 //
3252 // The CheckAssertionStatusDirectives boolean can be removed from here and
3253 // globals.hpp after the AssertionStatusDirectives class has been integrated
3254 // into merlin "for some time." Without it, the vm will fail with early
3255 // merlin builds.
3256
3257 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3258 const char* nm = "java/lang/AssertionStatusDirectives";
3259 const char* sig = "[Ljava/lang/String;";
3260 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3261 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3262 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3263 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3264 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3265 }
3266
3267 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3268 }
3269
3270 #endif // PRODUCT
3271
3272 int InjectedField::compute_offset() {
3273 klassOop klass_oop = klass();
3274 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3275 if (!may_be_java && !fs.access_flags().is_internal()) {
3276 // Only look at injected fields
3277 continue;
3278 }
3279 if (fs.name() == name() && fs.signature() == signature()) {
3280 return fs.offset();
3281 }
3282 }
3283 ResourceMark rm;
3284 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string());
3285 fatal("Invalid layout of preloaded class");
3286 return -1;
3287 }
3288
3289 void javaClasses_init() {
3290 JavaClasses::compute_offsets();
3291 JavaClasses::check_offsets();
3292 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3293 }