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
62 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
63 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
64
65 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
66 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
67
68 InjectedField JavaClasses::_injected_fields[] = {
69 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
70 };
71
72 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
73 return _injected_fields[id].compute_offset();
74 }
75
76
77 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
78 *field_count = 0;
79
80 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
81 if (sid == vmSymbols::NO_SID) {
82 // Only well known classes can inject fields
83 return NULL;
84 }
85
86 int count = 0;
87 int start = -1;
88
89 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
90 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
91 count++; \
92 if (start == -1) start = klass##_##name##_enum; \
93 }
94 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
95 #undef LOOKUP_INJECTED_FIELD
96
97 if (start != -1) {
98 *field_count = count;
99 return _injected_fields + start;
100 }
101 return NULL;
102 }
103
104
105 static bool find_field(instanceKlass* ik,
106 Symbol* name_symbol, Symbol* signature_symbol,
107 fieldDescriptor* fd,
108 bool allow_super = false) {
109 if (allow_super)
110 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
111 else
112 return ik->find_local_field(name_symbol, signature_symbol, fd);
113 }
114
115 // Helpful routine for computing field offsets at run time rather than hardcoding them
116 static void
117 compute_offset(int &dest_offset,
118 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
119 bool allow_super = false) {
120 fieldDescriptor fd;
121 instanceKlass* ik = instanceKlass::cast(klass_oop);
122 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
123 ResourceMark rm;
124 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
125 fatal("Invalid layout of preloaded class");
126 }
127 dest_offset = fd.offset();
128 }
129
130 // Same as above but for "optional" offsets that might not be present in certain JDK versions
131 static void
132 compute_optional_offset(int& dest_offset,
133 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
134 bool allow_super = false) {
135 fieldDescriptor fd;
136 instanceKlass* ik = instanceKlass::cast(klass_oop);
137 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
138 dest_offset = fd.offset();
139 }
140 }
141
142
143 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
144 // Create the String object first, so there's a chance that the String
145 // and the char array it points to end up in the same cache line.
146 oop obj;
147 if (tenured) {
148 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
149 } else {
150 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
151 }
152
153 // Create the char array. The String object must be handlized here
154 // because GC can happen as a result of the allocation attempt.
155 Handle h_obj(THREAD, obj);
156 typeArrayOop buffer;
157 if (tenured) {
158 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
159 } else {
160 buffer = oopFactory::new_charArray(length, CHECK_NH);
161 }
162
163 // Point the String at the char array
164 obj = h_obj();
165 set_value(obj, buffer);
166 // No need to zero the offset, allocation zero'ed the entire String object
167 assert(offset(obj) == 0, "initial String offset should be zero");
168 //set_offset(obj, 0);
169 set_count(obj, length);
170
171 return h_obj;
172 }
173
174 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
175 Handle h_obj = basic_create(length, tenured, CHECK_NH);
176 typeArrayOop buffer = value(h_obj());
177 for (int index = 0; index < length; index++) {
178 buffer->char_at_put(index, unicode[index]);
179 }
180 return h_obj;
181 }
182
183 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
184 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
185 }
186
187 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
188 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
189 }
190
191 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
192 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
193 return h_obj();
194 }
195
196 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
197 if (utf8_str == NULL) {
198 return Handle();
199 }
200 int length = UTF8::unicode_length(utf8_str);
201 Handle h_obj = basic_create(length, false, CHECK_NH);
202 if (length > 0) {
203 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
204 }
205 return h_obj;
206 }
207
208 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
209 Handle h_obj = create_from_str(utf8_str, CHECK_0);
210 return h_obj();
211 }
212
213 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
214 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
215 Handle h_obj = basic_create(length, false, CHECK_NH);
216 if (length > 0) {
217 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
218 }
219 return h_obj;
220 }
221
222 // Converts a C string to a Java String based on current encoding
223 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
224 assert(str != NULL, "bad arguments");
225
226 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
227 static to_java_string_fn_t _to_java_string_fn = NULL;
228
229 if (_to_java_string_fn == NULL) {
230 void *lib_handle = os::native_java_library();
231 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
232 if (_to_java_string_fn == NULL) {
233 fatal("NewStringPlatform missing");
234 }
235 }
236
237 jstring js = NULL;
238 { JavaThread* thread = (JavaThread*)THREAD;
239 assert(thread->is_Java_thread(), "must be java thread");
240 HandleMark hm(thread);
241 ThreadToNativeFromVM ttn(thread);
242 js = (_to_java_string_fn)(thread->jni_environment(), str);
243 }
244 return Handle(THREAD, JNIHandles::resolve(js));
245 }
246
247 // Converts a Java String to a native C string that can be used for
248 // native OS calls.
249 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
250
251 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
252 static to_platform_string_fn_t _to_platform_string_fn = NULL;
253
254 if (_to_platform_string_fn == NULL) {
255 void *lib_handle = os::native_java_library();
256 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
257 if (_to_platform_string_fn == NULL) {
258 fatal("GetStringPlatformChars missing");
259 }
260 }
261
262 char *native_platform_string;
263 { JavaThread* thread = (JavaThread*)THREAD;
264 assert(thread->is_Java_thread(), "must be java thread");
265 JNIEnv *env = thread->jni_environment();
266 jstring js = (jstring) JNIHandles::make_local(env, java_string());
267 bool is_copy;
268 HandleMark hm(thread);
269 ThreadToNativeFromVM ttn(thread);
270 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
271 assert(is_copy == JNI_TRUE, "is_copy value changed");
272 JNIHandles::destroy_local(js);
273 }
274 return native_platform_string;
275 }
276
277 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
278 oop obj = java_string();
279 // Typical usage is to convert all '/' to '.' in string.
280 typeArrayOop value = java_lang_String::value(obj);
281 int offset = java_lang_String::offset(obj);
282 int length = java_lang_String::length(obj);
283
284 // First check if any from_char exist
285 int index; // Declared outside, used later
286 for (index = 0; index < length; index++) {
287 if (value->char_at(index + offset) == from_char) {
288 break;
289 }
290 }
291 if (index == length) {
292 // No from_char, so do not copy.
293 return java_string;
294 }
295
296 // Create new UNICODE buffer. Must handlize value because GC
297 // may happen during String and char array creation.
298 typeArrayHandle h_value(THREAD, value);
299 Handle string = basic_create(length, false, CHECK_NH);
300
301 typeArrayOop from_buffer = h_value();
302 typeArrayOop to_buffer = java_lang_String::value(string());
303
304 // Copy contents
305 for (index = 0; index < length; index++) {
306 jchar c = from_buffer->char_at(index + offset);
307 if (c == from_char) {
308 c = to_char;
309 }
310 to_buffer->char_at_put(index, c);
311 }
312 return string;
313 }
314
315 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
316 typeArrayOop value = java_lang_String::value(java_string);
317 int offset = java_lang_String::offset(java_string);
318 length = java_lang_String::length(java_string);
319
320 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
321 for (int index = 0; index < length; index++) {
322 result[index] = value->char_at(index + offset);
323 }
324 return result;
325 }
326
327 unsigned int java_lang_String::hash_string(oop java_string) {
328 typeArrayOop value = java_lang_String::value(java_string);
329 int offset = java_lang_String::offset(java_string);
330 int length = java_lang_String::length(java_string);
331
332 if (length == 0) return 0;
333 return hash_string(value->char_at_addr(offset), length);
334 }
335
336 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
337 oop obj = java_string();
338 typeArrayOop value = java_lang_String::value(obj);
339 int offset = java_lang_String::offset(obj);
340 int length = java_lang_String::length(obj);
341 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
342 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
343 return sym;
344 }
345
346 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
347 typeArrayOop value = java_lang_String::value(java_string);
348 int offset = java_lang_String::offset(java_string);
349 int length = java_lang_String::length(java_string);
350 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
351 return SymbolTable::probe_unicode(base, length);
352 }
353
354
355 int java_lang_String::utf8_length(oop java_string) {
356 typeArrayOop value = java_lang_String::value(java_string);
357 int offset = java_lang_String::offset(java_string);
358 int length = java_lang_String::length(java_string);
359 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
360 return UNICODE::utf8_length(position, length);
361 }
362
363 char* java_lang_String::as_utf8_string(oop java_string) {
364 typeArrayOop value = java_lang_String::value(java_string);
365 int offset = java_lang_String::offset(java_string);
366 int length = java_lang_String::length(java_string);
367 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
368 return UNICODE::as_utf8(position, length);
369 }
370
371 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
372 typeArrayOop value = java_lang_String::value(java_string);
373 int offset = java_lang_String::offset(java_string);
374 int length = java_lang_String::length(java_string);
375 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
376 return UNICODE::as_utf8(position, length, buf, buflen);
377 }
378
379 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
380 typeArrayOop value = java_lang_String::value(java_string);
381 int offset = java_lang_String::offset(java_string);
382 int length = java_lang_String::length(java_string);
383 assert(start + len <= length, "just checking");
384 jchar* position = value->char_at_addr(offset + start);
385 return UNICODE::as_utf8(position, len);
386 }
387
388 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
389 assert(SharedSkipVerify ||
390 java_string->klass() == SystemDictionary::String_klass(),
391 "must be java_string");
392 typeArrayOop value = java_lang_String::value(java_string);
393 int offset = java_lang_String::offset(java_string);
394 int length = java_lang_String::length(java_string);
395 if (length != len) {
396 return false;
397 }
398 for (int i = 0; i < len; i++) {
399 if (value->char_at(i + offset) != chars[i]) {
400 return false;
401 }
402 }
403 return true;
404 }
405
406 void java_lang_String::print(Handle java_string, outputStream* st) {
407 oop obj = java_string();
408 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
409 typeArrayOop value = java_lang_String::value(obj);
410 int offset = java_lang_String::offset(obj);
411 int length = java_lang_String::length(obj);
412
413 int end = MIN2(length, 100);
414 if (value == NULL) {
415 // This can happen if, e.g., printing a String
416 // object before its initializer has been called
417 st->print_cr("NULL");
418 } else {
419 st->print("\"");
420 for (int index = 0; index < length; index++) {
421 st->print("%c", value->char_at(index + offset));
422 }
423 st->print("\"");
424 }
425 }
426
427 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
428 Handle mirror (THREAD, fd->field_holder()->java_mirror());
429 assert(mirror.not_null() && fd->is_static(), "just checking");
430 if (fd->has_initial_value()) {
431 BasicType t = fd->field_type();
432 switch (t) {
433 case T_BYTE:
434 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
435 break;
436 case T_BOOLEAN:
437 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
438 break;
439 case T_CHAR:
440 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
441 break;
442 case T_SHORT:
443 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
444 break;
445 case T_INT:
446 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
447 break;
448 case T_FLOAT:
449 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
450 break;
451 case T_DOUBLE:
452 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
453 break;
454 case T_LONG:
455 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
456 break;
457 case T_OBJECT:
458 {
459 #ifdef ASSERT
460 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
461 assert(fd->signature() == sym, "just checking");
462 #endif
463 oop string = fd->string_initial_value(CHECK);
464 mirror()->obj_field_put(fd->offset(), string);
465 }
466 break;
467 default:
468 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
469 "Illegal ConstantValue attribute in class file");
470 }
471 }
472 }
473
474
475 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
476 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
477
478 if (k->oop_is_instance()) {
479 // During bootstrap, java.lang.Class wasn't loaded so static field
480 // offsets were computed without the size added it. Go back and
481 // update all the static field offsets to included the size.
482 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
483 if (fs.access_flags().is_static()) {
484 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
485 fs.set_offset(real_offset);
486 }
487 }
488 }
489 create_mirror(k, CHECK);
490 }
491
492 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
493 assert(k->java_mirror() == NULL, "should only assign mirror once");
494 // Use this moment of initialization to cache modifier_flags also,
495 // to support Class.getModifiers(). Instance classes recalculate
496 // the cached flags after the class file is parsed, but before the
497 // class is put into the system dictionary.
498 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
499 k->set_modifier_flags(computed_modifiers);
500 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
501 // Allocate mirror (java.lang.Class instance)
502 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
503 // Setup indirections
504 mirror->obj_field_put(_klass_offset, k());
505 k->set_java_mirror(mirror());
506
507 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
508 java_lang_Class::set_oop_size(mirror(), mk->instance_size(k));
509 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
510
511 // It might also have a component mirror. This mirror must already exist.
512 if (k->oop_is_javaArray()) {
513 Handle comp_mirror;
514 if (k->oop_is_typeArray()) {
515 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
516 comp_mirror = Universe::java_mirror(type);
517 assert(comp_mirror.not_null(), "must have primitive mirror");
518 } else if (k->oop_is_objArray()) {
519 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
520 if (element_klass != NULL
521 && (Klass::cast(element_klass)->oop_is_instance() ||
522 Klass::cast(element_klass)->oop_is_javaArray())) {
523 comp_mirror = Klass::cast(element_klass)->java_mirror();
524 assert(comp_mirror.not_null(), "must have element mirror");
525 }
526 // else some object array internal to the VM, like systemObjArrayKlassObj
527 }
528 if (comp_mirror.not_null()) {
529 // Two-way link between the array klass and its component mirror:
530 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
531 set_array_klass(comp_mirror(), k->as_klassOop());
532 }
533 } else if (k->oop_is_instance()) {
534 // Initialize static fields
535 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
536 }
537 return mirror();
538 } else {
539 return NULL;
540 }
541 }
542
543
544
545 int java_lang_Class::oop_size(oop java_class) {
546 assert(_oop_size_offset != 0, "must be set");
547 return java_class->int_field(_oop_size_offset);
548 }
549 void java_lang_Class::set_oop_size(oop java_class, int size) {
550 assert(_oop_size_offset != 0, "must be set");
551 java_class->int_field_put(_oop_size_offset, size);
552 }
553 int java_lang_Class::static_oop_field_count(oop java_class) {
554 assert(_static_oop_field_count_offset != 0, "must be set");
555 return java_class->int_field(_static_oop_field_count_offset);
556 }
557 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
558 assert(_static_oop_field_count_offset != 0, "must be set");
559 java_class->int_field_put(_static_oop_field_count_offset, size);
560 }
561
562 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
563 // This should be improved by adding a field at the Java level or by
564 // introducing a new VM klass (see comment in ClassFileParser)
565 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
566 if (type != T_VOID) {
567 klassOop aklass = Universe::typeArrayKlassObj(type);
568 assert(aklass != NULL, "correct bootstrap");
569 set_array_klass(java_class, aklass);
570 }
571 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
572 java_lang_Class::set_oop_size(java_class, mk->instance_size(oop(NULL)));
573 java_lang_Class::set_static_oop_field_count(java_class, 0);
574 return java_class;
575 }
576
577
578 klassOop java_lang_Class::as_klassOop(oop java_class) {
579 //%note memory_2
580 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
581 klassOop k = klassOop(java_class->obj_field(_klass_offset));
582 assert(k == NULL || k->is_klass(), "type check");
583 return k;
584 }
585
586
587 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
588 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
589 Symbol* name = NULL;
590 bool is_instance = false;
591 if (is_primitive(java_class)) {
592 name = vmSymbols::type_signature(primitive_type(java_class));
593 } else {
594 klassOop k = as_klassOop(java_class);
595 is_instance = Klass::cast(k)->oop_is_instance();
596 name = Klass::cast(k)->name();
597 }
598 if (name == NULL) {
599 st->print("<null>");
600 return;
601 }
602 if (is_instance) st->print("L");
603 st->write((char*) name->base(), (int) name->utf8_length());
604 if (is_instance) st->print(";");
605 }
606
607 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
608 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
609 Symbol* name;
610 if (is_primitive(java_class)) {
611 name = vmSymbols::type_signature(primitive_type(java_class));
612 // Because this can create a new symbol, the caller has to decrement
613 // the refcount, so make adjustment here and below for symbols returned
614 // that are not created or incremented due to a successful lookup.
615 name->increment_refcount();
616 } else {
617 klassOop k = as_klassOop(java_class);
618 if (!Klass::cast(k)->oop_is_instance()) {
619 name = Klass::cast(k)->name();
620 name->increment_refcount();
621 } else {
622 ResourceMark rm;
623 const char* sigstr = Klass::cast(k)->signature_name();
624 int siglen = (int) strlen(sigstr);
625 if (!intern_if_not_found) {
626 name = SymbolTable::probe(sigstr, siglen);
627 } else {
628 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
629 }
630 }
631 }
632 return name;
633 }
634
635
636 klassOop java_lang_Class::array_klass(oop java_class) {
637 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
638 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
639 return k;
640 }
641
642
643 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
644 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
645 java_class->obj_field_put(_array_klass_offset, klass);
646 }
647
648
649 methodOop java_lang_Class::resolved_constructor(oop java_class) {
650 oop constructor = java_class->obj_field(_resolved_constructor_offset);
651 assert(constructor == NULL || constructor->is_method(), "should be method");
652 return methodOop(constructor);
653 }
654
655
656 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
657 assert(constructor->is_method(), "should be method");
658 java_class->obj_field_put(_resolved_constructor_offset, constructor);
659 }
660
661
662 bool java_lang_Class::is_primitive(oop java_class) {
663 // should assert:
664 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
665 klassOop k = klassOop(java_class->obj_field(_klass_offset));
666 return k == NULL;
667 }
668
669
670 BasicType java_lang_Class::primitive_type(oop java_class) {
671 assert(java_lang_Class::is_primitive(java_class), "just checking");
672 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
673 BasicType type = T_VOID;
674 if (ak != NULL) {
675 // Note: create_basic_type_mirror above initializes ak to a non-null value.
676 type = arrayKlass::cast(ak)->element_type();
677 } else {
678 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
679 }
680 assert(Universe::java_mirror(type) == java_class, "must be consistent");
681 return type;
682 }
683
684 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
685 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
686 if (is_primitive(java_class)) {
687 if (reference_klass != NULL)
688 (*reference_klass) = NULL;
689 return primitive_type(java_class);
690 } else {
691 if (reference_klass != NULL)
692 (*reference_klass) = as_klassOop(java_class);
693 return T_OBJECT;
694 }
695 }
696
697
698 oop java_lang_Class::primitive_mirror(BasicType t) {
699 oop mirror = Universe::java_mirror(t);
700 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
701 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
702 return mirror;
703 }
704
705 bool java_lang_Class::offsets_computed = false;
706 int java_lang_Class::classRedefinedCount_offset = -1;
707
708 void java_lang_Class::compute_offsets() {
709 assert(!offsets_computed, "offsets should be initialized only once");
710 offsets_computed = true;
711
712 klassOop klass_oop = SystemDictionary::Class_klass();
713 // The classRedefinedCount field is only present starting in 1.5,
714 // so don't go fatal.
715 compute_optional_offset(classRedefinedCount_offset,
716 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
717
718 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
719 }
720
721 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
722 if (!JDK_Version::is_gte_jdk15x_version()
723 || classRedefinedCount_offset == -1) {
724 // The classRedefinedCount field is only present starting in 1.5.
725 // If we don't have an offset for it then just return -1 as a marker.
726 return -1;
727 }
728
729 return the_class_mirror->int_field(classRedefinedCount_offset);
730 }
731
732 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
733 if (!JDK_Version::is_gte_jdk15x_version()
734 || classRedefinedCount_offset == -1) {
735 // The classRedefinedCount field is only present starting in 1.5.
736 // If we don't have an offset for it then nothing to set.
737 return;
738 }
739
740 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
741 }
742
743
744 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
745 // platform thread structure, and a eetop offset which was used for thread
746 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
747 // merged, so in the HotSpot VM we just use the eetop field for the thread
748 // instead of the privateInfo_offset.
749 //
750 // Note: The stackSize field is only present starting in 1.4.
751
752 int java_lang_Thread::_name_offset = 0;
753 int java_lang_Thread::_group_offset = 0;
754 int java_lang_Thread::_contextClassLoader_offset = 0;
755 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
756 int java_lang_Thread::_priority_offset = 0;
757 int java_lang_Thread::_eetop_offset = 0;
758 int java_lang_Thread::_daemon_offset = 0;
759 int java_lang_Thread::_stillborn_offset = 0;
760 int java_lang_Thread::_stackSize_offset = 0;
761 int java_lang_Thread::_tid_offset = 0;
762 int java_lang_Thread::_thread_status_offset = 0;
763 int java_lang_Thread::_park_blocker_offset = 0;
764 int java_lang_Thread::_park_event_offset = 0 ;
765
766
767 void java_lang_Thread::compute_offsets() {
768 assert(_group_offset == 0, "offsets should be initialized only once");
769
770 klassOop k = SystemDictionary::Thread_klass();
771 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
772 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
773 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
774 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
775 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
776 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
777 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
778 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
779 // The stackSize field is only present starting in 1.4, so don't go fatal.
780 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
781 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
782 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
783 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
784 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
785 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
786 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
787 vmSymbols::long_signature());
788 }
789
790
791 JavaThread* java_lang_Thread::thread(oop java_thread) {
792 return (JavaThread*)java_thread->address_field(_eetop_offset);
793 }
794
795
796 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
797 java_thread->address_field_put(_eetop_offset, (address)thread);
798 }
799
800
801 typeArrayOop java_lang_Thread::name(oop java_thread) {
802 oop name = java_thread->obj_field(_name_offset);
803 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
804 return typeArrayOop(name);
805 }
806
807
808 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
809 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
810 java_thread->obj_field_put(_name_offset, name);
811 }
812
813
814 ThreadPriority java_lang_Thread::priority(oop java_thread) {
815 return (ThreadPriority)java_thread->int_field(_priority_offset);
816 }
817
818
819 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
820 java_thread->int_field_put(_priority_offset, priority);
821 }
822
823
824 oop java_lang_Thread::threadGroup(oop java_thread) {
825 return java_thread->obj_field(_group_offset);
826 }
827
828
829 bool java_lang_Thread::is_stillborn(oop java_thread) {
830 return java_thread->bool_field(_stillborn_offset) != 0;
831 }
832
833
834 // We never have reason to turn the stillborn bit off
835 void java_lang_Thread::set_stillborn(oop java_thread) {
836 java_thread->bool_field_put(_stillborn_offset, true);
837 }
838
839
840 bool java_lang_Thread::is_alive(oop java_thread) {
841 JavaThread* thr = java_lang_Thread::thread(java_thread);
842 return (thr != NULL);
843 }
844
845
846 bool java_lang_Thread::is_daemon(oop java_thread) {
847 return java_thread->bool_field(_daemon_offset) != 0;
848 }
849
850
851 void java_lang_Thread::set_daemon(oop java_thread) {
852 java_thread->bool_field_put(_daemon_offset, true);
853 }
854
855 oop java_lang_Thread::context_class_loader(oop java_thread) {
856 return java_thread->obj_field(_contextClassLoader_offset);
857 }
858
859 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
860 return java_thread->obj_field(_inheritedAccessControlContext_offset);
861 }
862
863
864 jlong java_lang_Thread::stackSize(oop java_thread) {
865 // The stackSize field is only present starting in 1.4
866 if (_stackSize_offset > 0) {
867 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
868 return java_thread->long_field(_stackSize_offset);
869 } else {
870 return 0;
871 }
872 }
873
874 // Write the thread status value to threadStatus field in java.lang.Thread java class.
875 void java_lang_Thread::set_thread_status(oop java_thread,
876 java_lang_Thread::ThreadStatus status) {
877 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
878 // The threadStatus is only present starting in 1.5
879 if (_thread_status_offset > 0) {
880 java_thread->int_field_put(_thread_status_offset, status);
881 }
882 }
883
884 // Read thread status value from threadStatus field in java.lang.Thread java class.
885 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
886 assert(Thread::current()->is_VM_thread() ||
887 JavaThread::current()->thread_state() == _thread_in_vm,
888 "Java Thread is not running in vm");
889 // The threadStatus is only present starting in 1.5
890 if (_thread_status_offset > 0) {
891 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
892 } else {
893 // All we can easily figure out is if it is alive, but that is
894 // enough info for a valid unknown status.
895 // These aren't restricted to valid set ThreadStatus values, so
896 // use JVMTI values and cast.
897 JavaThread* thr = java_lang_Thread::thread(java_thread);
898 if (thr == NULL) {
899 // the thread hasn't run yet or is in the process of exiting
900 return NEW;
901 }
902 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
903 }
904 }
905
906
907 jlong java_lang_Thread::thread_id(oop java_thread) {
908 // The thread ID field is only present starting in 1.5
909 if (_tid_offset > 0) {
910 return java_thread->long_field(_tid_offset);
911 } else {
912 return 0;
913 }
914 }
915
916 oop java_lang_Thread::park_blocker(oop java_thread) {
917 assert(JDK_Version::current().supports_thread_park_blocker() &&
918 _park_blocker_offset != 0, "Must support parkBlocker field");
919
920 if (_park_blocker_offset > 0) {
921 return java_thread->obj_field(_park_blocker_offset);
922 }
923
924 return NULL;
925 }
926
927 jlong java_lang_Thread::park_event(oop java_thread) {
928 if (_park_event_offset > 0) {
929 return java_thread->long_field(_park_event_offset);
930 }
931 return 0;
932 }
933
934 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
935 if (_park_event_offset > 0) {
936 java_thread->long_field_put(_park_event_offset, ptr);
937 return true;
938 }
939 return false;
940 }
941
942
943 const char* java_lang_Thread::thread_status_name(oop java_thread) {
944 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
945 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
946 switch (status) {
947 case NEW : return "NEW";
948 case RUNNABLE : return "RUNNABLE";
949 case SLEEPING : return "TIMED_WAITING (sleeping)";
950 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
951 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
952 case PARKED : return "WAITING (parking)";
953 case PARKED_TIMED : return "TIMED_WAITING (parking)";
954 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
955 case TERMINATED : return "TERMINATED";
956 default : return "UNKNOWN";
957 };
958 }
959 int java_lang_ThreadGroup::_parent_offset = 0;
960 int java_lang_ThreadGroup::_name_offset = 0;
961 int java_lang_ThreadGroup::_threads_offset = 0;
962 int java_lang_ThreadGroup::_groups_offset = 0;
963 int java_lang_ThreadGroup::_maxPriority_offset = 0;
964 int java_lang_ThreadGroup::_destroyed_offset = 0;
965 int java_lang_ThreadGroup::_daemon_offset = 0;
966 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
967 int java_lang_ThreadGroup::_nthreads_offset = 0;
968 int java_lang_ThreadGroup::_ngroups_offset = 0;
969
970 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
971 assert(java_thread_group->is_oop(), "thread group must be oop");
972 return java_thread_group->obj_field(_parent_offset);
973 }
974
975 // ("name as oop" accessor is not necessary)
976
977 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
978 oop name = java_thread_group->obj_field(_name_offset);
979 // ThreadGroup.name can be null
980 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
981 }
982
983 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
984 assert(java_thread_group->is_oop(), "thread group must be oop");
985 return java_thread_group->int_field(_nthreads_offset);
986 }
987
988 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
989 oop threads = java_thread_group->obj_field(_threads_offset);
990 assert(threads != NULL, "threadgroups should have threads");
991 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
992 return objArrayOop(threads);
993 }
994
995 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
996 assert(java_thread_group->is_oop(), "thread group must be oop");
997 return java_thread_group->int_field(_ngroups_offset);
998 }
999
1000 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1001 oop groups = java_thread_group->obj_field(_groups_offset);
1002 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1003 return objArrayOop(groups);
1004 }
1005
1006 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1007 assert(java_thread_group->is_oop(), "thread group must be oop");
1008 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1009 }
1010
1011 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1012 assert(java_thread_group->is_oop(), "thread group must be oop");
1013 return java_thread_group->bool_field(_destroyed_offset) != 0;
1014 }
1015
1016 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1017 assert(java_thread_group->is_oop(), "thread group must be oop");
1018 return java_thread_group->bool_field(_daemon_offset) != 0;
1019 }
1020
1021 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1022 assert(java_thread_group->is_oop(), "thread group must be oop");
1023 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1024 }
1025
1026 void java_lang_ThreadGroup::compute_offsets() {
1027 assert(_parent_offset == 0, "offsets should be initialized only once");
1028
1029 klassOop k = SystemDictionary::ThreadGroup_klass();
1030
1031 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1032 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1033 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1034 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1035 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1036 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1037 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1038 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1039 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1040 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1041 }
1042
1043 oop java_lang_Throwable::unassigned_stacktrace() {
1044 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1045 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1046 if (UseCompressedOops) {
1047 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1048 } else {
1049 return oopDesc::load_decode_heap_oop((oop*)addr);
1050 }
1051 }
1052
1053 oop java_lang_Throwable::backtrace(oop throwable) {
1054 return throwable->obj_field_acquire(backtrace_offset);
1055 }
1056
1057
1058 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1059 throwable->release_obj_field_put(backtrace_offset, value);
1060 }
1061
1062
1063 oop java_lang_Throwable::message(oop throwable) {
1064 return throwable->obj_field(detailMessage_offset);
1065 }
1066
1067
1068 oop java_lang_Throwable::message(Handle throwable) {
1069 return throwable->obj_field(detailMessage_offset);
1070 }
1071
1072
1073 void java_lang_Throwable::set_message(oop throwable, oop value) {
1074 throwable->obj_field_put(detailMessage_offset, value);
1075 }
1076
1077
1078 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1079 throwable->obj_field_put(stackTrace_offset, st_element_array);
1080 }
1081
1082 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1083 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1084 set_stacktrace(throwable, NULL);
1085 }
1086
1087
1088 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1089 ResourceMark rm;
1090 klassOop k = throwable->klass();
1091 assert(k != NULL, "just checking");
1092 st->print("%s", instanceKlass::cast(k)->external_name());
1093 oop msg = message(throwable);
1094 if (msg != NULL) {
1095 st->print(": %s", java_lang_String::as_utf8_string(msg));
1096 }
1097 }
1098
1099
1100 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1101 ResourceMark rm;
1102 klassOop k = throwable->klass();
1103 assert(k != NULL, "just checking");
1104 st->print("%s", instanceKlass::cast(k)->external_name());
1105 oop msg = message(throwable);
1106 if (msg != NULL) {
1107 st->print(": %s", java_lang_String::as_utf8_string(msg));
1108 }
1109 }
1110
1111 // Print stack trace element to resource allocated buffer
1112 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1113 // Get strings and string lengths
1114 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1115 const char* klass_name = klass->external_name();
1116 int buf_len = (int)strlen(klass_name);
1117 char* source_file_name;
1118 if (klass->source_file_name() == NULL) {
1119 source_file_name = NULL;
1120 } else {
1121 source_file_name = klass->source_file_name()->as_C_string();
1122 buf_len += (int)strlen(source_file_name);
1123 }
1124 char* method_name = method->name()->as_C_string();
1125 buf_len += (int)strlen(method_name);
1126
1127 // Allocate temporary buffer with extra space for formatting and line number
1128 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1129
1130 // Print stack trace line in buffer
1131 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1132 if (method->is_native()) {
1133 strcat(buf, "(Native Method)");
1134 } else {
1135 int line_number = method->line_number_from_bci(bci);
1136 if (source_file_name != NULL && (line_number != -1)) {
1137 // Sourcename and linenumber
1138 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1139 } else if (source_file_name != NULL) {
1140 // Just sourcename
1141 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1142 } else {
1143 // Neither soucename and linenumber
1144 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1145 }
1146 nmethod* nm = method->code();
1147 if (WizardMode && nm != NULL) {
1148 sprintf(buf + (int)strlen(buf), "(nmethod " PTR_FORMAT ")", (intptr_t)nm);
1149 }
1150 }
1151
1152 return buf;
1153 }
1154
1155
1156 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1157 ResourceMark rm;
1158 char* buf = print_stack_element_to_buffer(method, bci);
1159 print_to_stream(stream, buf);
1160 }
1161
1162 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1163 ResourceMark rm;
1164 char* buf = print_stack_element_to_buffer(method, bci);
1165 st->print_cr("%s", buf);
1166 }
1167
1168 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1169 if (stream.is_null()) {
1170 tty->print_cr("%s", str);
1171 } else {
1172 EXCEPTION_MARK;
1173 JavaValue result(T_VOID);
1174 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1175 if (!HAS_PENDING_EXCEPTION) {
1176 JavaCalls::call_virtual(&result,
1177 stream,
1178 KlassHandle(THREAD, stream->klass()),
1179 vmSymbols::println_name(),
1180 vmSymbols::char_array_void_signature(),
1181 arg,
1182 THREAD);
1183 }
1184 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1185 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1186 }
1187
1188 }
1189
1190
1191 const char* java_lang_Throwable::no_stack_trace_message() {
1192 return "\t<<no stack trace available>>";
1193 }
1194
1195
1196 // Currently used only for exceptions occurring during startup
1197 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1198 Thread *THREAD = Thread::current();
1199 Handle h_throwable(THREAD, throwable);
1200 while (h_throwable.not_null()) {
1201 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1202 if (result.is_null()) {
1203 st->print_cr(no_stack_trace_message());
1204 return;
1205 }
1206
1207 while (result.not_null()) {
1208 objArrayHandle methods (THREAD,
1209 objArrayOop(result->obj_at(trace_methods_offset)));
1210 typeArrayHandle bcis (THREAD,
1211 typeArrayOop(result->obj_at(trace_bcis_offset)));
1212
1213 if (methods.is_null() || bcis.is_null()) {
1214 st->print_cr(no_stack_trace_message());
1215 return;
1216 }
1217
1218 int length = methods()->length();
1219 for (int index = 0; index < length; index++) {
1220 methodOop method = methodOop(methods()->obj_at(index));
1221 if (method == NULL) goto handle_cause;
1222 int bci = bcis->ushort_at(index);
1223 print_stack_element(st, method, bci);
1224 }
1225 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1226 }
1227 handle_cause:
1228 {
1229 EXCEPTION_MARK;
1230 JavaValue result(T_OBJECT);
1231 JavaCalls::call_virtual(&result,
1232 h_throwable,
1233 KlassHandle(THREAD, h_throwable->klass()),
1234 vmSymbols::getCause_name(),
1235 vmSymbols::void_throwable_signature(),
1236 THREAD);
1237 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1238 if (HAS_PENDING_EXCEPTION) {
1239 CLEAR_PENDING_EXCEPTION;
1240 h_throwable = Handle();
1241 } else {
1242 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1243 if (h_throwable.not_null()) {
1244 st->print("Caused by: ");
1245 print(h_throwable, st);
1246 st->cr();
1247 }
1248 }
1249 }
1250 }
1251 }
1252
1253
1254 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1255 // Note: this is no longer used in Merlin, but we support it for compatibility.
1256 Thread *thread = Thread::current();
1257 Handle stream(thread, print_stream);
1258 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1259 if (result.is_null()) {
1260 print_to_stream(stream, no_stack_trace_message());
1261 return;
1262 }
1263
1264 while (result.not_null()) {
1265 objArrayHandle methods (thread,
1266 objArrayOop(result->obj_at(trace_methods_offset)));
1267 typeArrayHandle bcis (thread,
1268 typeArrayOop(result->obj_at(trace_bcis_offset)));
1269
1270 if (methods.is_null() || bcis.is_null()) {
1271 print_to_stream(stream, no_stack_trace_message());
1272 return;
1273 }
1274
1275 int length = methods()->length();
1276 for (int index = 0; index < length; index++) {
1277 methodOop method = methodOop(methods()->obj_at(index));
1278 if (method == NULL) return;
1279 int bci = bcis->ushort_at(index);
1280 print_stack_element(stream, method, bci);
1281 }
1282 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1283 }
1284 }
1285
1286 // This class provides a simple wrapper over the internal structure of
1287 // exception backtrace to insulate users of the backtrace from needing
1288 // to know what it looks like.
1289 class BacktraceBuilder: public StackObj {
1290 private:
1291 Handle _backtrace;
1292 objArrayOop _head;
1293 objArrayOop _methods;
1294 typeArrayOop _bcis;
1295 int _index;
1296 No_Safepoint_Verifier _nsv;
1297
1298 public:
1299
1300 enum {
1301 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1302 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1303 trace_next_offset = java_lang_Throwable::trace_next_offset,
1304 trace_size = java_lang_Throwable::trace_size,
1305 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1306 };
1307
1308 // constructor for new backtrace
1309 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1310 expand(CHECK);
1311 _backtrace = _head;
1312 _index = 0;
1313 }
1314
1315 void expand(TRAPS) {
1316 objArrayHandle old_head(THREAD, _head);
1317 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1318
1319 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1320 objArrayHandle new_head(THREAD, head);
1321
1322 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1323 objArrayHandle new_methods(THREAD, methods);
1324
1325 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1326 typeArrayHandle new_bcis(THREAD, bcis);
1327
1328 if (!old_head.is_null()) {
1329 old_head->obj_at_put(trace_next_offset, new_head());
1330 }
1331 new_head->obj_at_put(trace_methods_offset, new_methods());
1332 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1333
1334 _head = new_head();
1335 _methods = new_methods();
1336 _bcis = new_bcis();
1337 _index = 0;
1338 }
1339
1340 oop backtrace() {
1341 return _backtrace();
1342 }
1343
1344 inline void push(methodOop method, short bci, TRAPS) {
1345 if (_index >= trace_chunk_size) {
1346 methodHandle mhandle(THREAD, method);
1347 expand(CHECK);
1348 method = mhandle();
1349 }
1350
1351 _methods->obj_at_put(_index, method);
1352 _bcis->ushort_at_put(_index, bci);
1353 _index++;
1354 }
1355
1356 methodOop current_method() {
1357 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1358 return methodOop(_methods->obj_at(_index));
1359 }
1360
1361 jushort current_bci() {
1362 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1363 return _bcis->ushort_at(_index);
1364 }
1365 };
1366
1367
1368 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1369 if (!StackTraceInThrowable) return;
1370 ResourceMark rm(THREAD);
1371
1372 // Start out by clearing the backtrace for this object, in case the VM
1373 // runs out of memory while allocating the stack trace
1374 set_backtrace(throwable(), NULL);
1375 if (JDK_Version::is_gte_jdk14x_version()) {
1376 // New since 1.4, clear lazily constructed Java level stacktrace if
1377 // refilling occurs
1378 // This is unnecessary in 1.7+ but harmless
1379 clear_stacktrace(throwable());
1380 }
1381
1382 int max_depth = MaxJavaStackTraceDepth;
1383 JavaThread* thread = (JavaThread*)THREAD;
1384 BacktraceBuilder bt(CHECK);
1385
1386 // If there is no Java frame just return the method that was being called
1387 // with bci 0
1388 if (!thread->has_last_Java_frame()) {
1389 if (max_depth >= 1 && method() != NULL) {
1390 bt.push(method(), 0, CHECK);
1391 set_backtrace(throwable(), bt.backtrace());
1392 }
1393 return;
1394 }
1395
1396 // Instead of using vframe directly, this version of fill_in_stack_trace
1397 // basically handles everything by hand. This significantly improved the
1398 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1399 // See bug 6333838 for more details.
1400 // The "ASSERT" here is to verify this method generates the exactly same stack
1401 // trace as utilizing vframe.
1402 #ifdef ASSERT
1403 vframeStream st(thread);
1404 methodHandle st_method(THREAD, st.method());
1405 #endif
1406 int total_count = 0;
1407 RegisterMap map(thread, false);
1408 int decode_offset = 0;
1409 nmethod* nm = NULL;
1410 bool skip_fillInStackTrace_check = false;
1411 bool skip_throwableInit_check = false;
1412
1413 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1414 methodOop method = NULL;
1415 int bci = 0;
1416
1417 // Compiled java method case.
1418 if (decode_offset != 0) {
1419 DebugInfoReadStream stream(nm, decode_offset);
1420 decode_offset = stream.read_int();
1421 method = (methodOop)nm->oop_at(stream.read_int());
1422 bci = stream.read_bci();
1423 } else {
1424 if (fr.is_first_frame()) break;
1425 address pc = fr.pc();
1426 if (fr.is_interpreted_frame()) {
1427 intptr_t bcx = fr.interpreter_frame_bcx();
1428 method = fr.interpreter_frame_method();
1429 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1430 fr = fr.sender(&map);
1431 } else {
1432 CodeBlob* cb = fr.cb();
1433 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1434 // but non nmethod
1435 fr = fr.sender(&map);
1436 if (cb == NULL || !cb->is_nmethod()) {
1437 continue;
1438 }
1439 nm = (nmethod*)cb;
1440 if (nm->method()->is_native()) {
1441 method = nm->method();
1442 bci = 0;
1443 } else {
1444 PcDesc* pd = nm->pc_desc_at(pc);
1445 decode_offset = pd->scope_decode_offset();
1446 // if decode_offset is not equal to 0, it will execute the
1447 // "compiled java method case" at the beginning of the loop.
1448 continue;
1449 }
1450 }
1451 }
1452 #ifdef ASSERT
1453 assert(st_method() == method && st.bci() == bci,
1454 "Wrong stack trace");
1455 st.next();
1456 // vframeStream::method isn't GC-safe so store off a copy
1457 // of the methodOop in case we GC.
1458 if (!st.at_end()) {
1459 st_method = st.method();
1460 }
1461 #endif
1462
1463 // the format of the stacktrace will be:
1464 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1465 // - 0 or more <init> methods for the exception class (skipped)
1466 // - rest of the stack
1467
1468 if (!skip_fillInStackTrace_check) {
1469 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1470 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1471 throwable->is_a(method->method_holder())) {
1472 continue;
1473 }
1474 else {
1475 skip_fillInStackTrace_check = true; // gone past them all
1476 }
1477 }
1478 if (!skip_throwableInit_check) {
1479 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1480
1481 // skip <init> methods of the exception class and superclasses
1482 // This is simlar to classic VM.
1483 if (method->name() == vmSymbols::object_initializer_name() &&
1484 throwable->is_a(method->method_holder())) {
1485 continue;
1486 } else {
1487 // there are none or we've seen them all - either way stop checking
1488 skip_throwableInit_check = true;
1489 }
1490 }
1491 bt.push(method, bci, CHECK);
1492 total_count++;
1493 }
1494
1495 // Put completed stack trace into throwable object
1496 set_backtrace(throwable(), bt.backtrace());
1497 }
1498
1499 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1500 // No-op if stack trace is disabled
1501 if (!StackTraceInThrowable) {
1502 return;
1503 }
1504
1505 // Disable stack traces for some preallocated out of memory errors
1506 if (!Universe::should_fill_in_stack_trace(throwable)) {
1507 return;
1508 }
1509
1510 PRESERVE_EXCEPTION_MARK;
1511
1512 JavaThread* thread = JavaThread::active();
1513 fill_in_stack_trace(throwable, method, thread);
1514 // ignore exceptions thrown during stack trace filling
1515 CLEAR_PENDING_EXCEPTION;
1516 }
1517
1518 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1519 // Allocate stack trace - backtrace is created but not filled in
1520
1521 // No-op if stack trace is disabled
1522 if (!StackTraceInThrowable) return;
1523
1524 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1525 objArrayHandle backtrace (THREAD, h_oop);
1526 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1527 objArrayHandle methods (THREAD, m_oop);
1528 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1529 typeArrayHandle bcis(THREAD, b);
1530
1531 // backtrace has space for one chunk (next is NULL)
1532 backtrace->obj_at_put(trace_methods_offset, methods());
1533 backtrace->obj_at_put(trace_bcis_offset, bcis());
1534 set_backtrace(throwable(), backtrace());
1535 }
1536
1537
1538 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1539 // Fill in stack trace into preallocated backtrace (no GC)
1540
1541 // No-op if stack trace is disabled
1542 if (!StackTraceInThrowable) return;
1543
1544 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1545
1546 oop backtrace = java_lang_Throwable::backtrace(throwable());
1547 assert(backtrace != NULL, "backtrace not preallocated");
1548
1549 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1550 objArrayOop methods = objArrayOop(m);
1551 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1552
1553 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1554 typeArrayOop bcis = typeArrayOop(b);
1555 assert(bcis != NULL, "bci array not preallocated");
1556
1557 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1558
1559 JavaThread* thread = JavaThread::current();
1560 ResourceMark rm(thread);
1561 vframeStream st(thread);
1562
1563 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1564 // methods as preallocated errors aren't created by "java" code.
1565
1566 // fill in as much stack trace as possible
1567 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1568 int chunk_count = 0;
1569
1570 for (;!st.at_end(); st.next()) {
1571 // add element
1572 bcis->ushort_at_put(chunk_count, st.bci());
1573 methods->obj_at_put(chunk_count, st.method());
1574
1575 chunk_count++;
1576
1577 // Bail-out for deep stacks
1578 if (chunk_count >= max_chunks) break;
1579 }
1580
1581 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1582 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1583 // can be removed in a JDK using this JVM version
1584 if (JDK_Version::is_gte_jdk17x_version()) {
1585 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1586 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1587 }
1588
1589 }
1590
1591
1592 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1593 if (throwable == NULL) {
1594 THROW_0(vmSymbols::java_lang_NullPointerException());
1595 }
1596 objArrayOop chunk = objArrayOop(backtrace(throwable));
1597 int depth = 0;
1598 if (chunk != NULL) {
1599 // Iterate over chunks and count full ones
1600 while (true) {
1601 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1602 if (next == NULL) break;
1603 depth += trace_chunk_size;
1604 chunk = next;
1605 }
1606 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1607 // Count element in remaining partial chunk
1608 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1609 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1610 assert(methods != NULL && bcis != NULL, "sanity check");
1611 for (int i = 0; i < methods->length(); i++) {
1612 if (methods->obj_at(i) == NULL) break;
1613 depth++;
1614 }
1615 }
1616 return depth;
1617 }
1618
1619
1620 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1621 if (throwable == NULL) {
1622 THROW_0(vmSymbols::java_lang_NullPointerException());
1623 }
1624 if (index < 0) {
1625 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1626 }
1627 // Compute how many chunks to skip and index into actual chunk
1628 objArrayOop chunk = objArrayOop(backtrace(throwable));
1629 int skip_chunks = index / trace_chunk_size;
1630 int chunk_index = index % trace_chunk_size;
1631 while (chunk != NULL && skip_chunks > 0) {
1632 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1633 skip_chunks--;
1634 }
1635 if (chunk == NULL) {
1636 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1637 }
1638 // Get method,bci from chunk
1639 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1640 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1641 assert(methods != NULL && bcis != NULL, "sanity check");
1642 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1643 int bci = bcis->ushort_at(chunk_index);
1644 // Chunk can be partial full
1645 if (method.is_null()) {
1646 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1647 }
1648
1649 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1650 return element;
1651 }
1652
1653 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1654 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1655 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1656
1657 // Allocate java.lang.StackTraceElement instance
1658 klassOop k = SystemDictionary::StackTraceElement_klass();
1659 assert(k != NULL, "must be loaded in 1.4+");
1660 instanceKlassHandle ik (THREAD, k);
1661 if (ik->should_be_initialized()) {
1662 ik->initialize(CHECK_0);
1663 }
1664
1665 Handle element = ik->allocate_instance_handle(CHECK_0);
1666 // Fill in class name
1667 ResourceMark rm(THREAD);
1668 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1669 oop classname = StringTable::intern((char*) str, CHECK_0);
1670 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1671 // Fill in method name
1672 oop methodname = StringTable::intern(method->name(), CHECK_0);
1673 java_lang_StackTraceElement::set_methodName(element(), methodname);
1674 // Fill in source file name
1675 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1676 oop filename = StringTable::intern(source, CHECK_0);
1677 java_lang_StackTraceElement::set_fileName(element(), filename);
1678 // File in source line number
1679 int line_number;
1680 if (method->is_native()) {
1681 // Negative value different from -1 below, enabling Java code in
1682 // class java.lang.StackTraceElement to distinguish "native" from
1683 // "no LineNumberTable".
1684 line_number = -2;
1685 } else {
1686 // Returns -1 if no LineNumberTable, and otherwise actual line number
1687 line_number = method->line_number_from_bci(bci);
1688 }
1689 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1690
1691 return element();
1692 }
1693
1694
1695 void java_lang_reflect_AccessibleObject::compute_offsets() {
1696 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1697 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1698 }
1699
1700 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1701 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1702 return (jboolean) reflect->bool_field(override_offset);
1703 }
1704
1705 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1706 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1707 reflect->bool_field_put(override_offset, (int) value);
1708 }
1709
1710 void java_lang_reflect_Method::compute_offsets() {
1711 klassOop k = SystemDictionary::reflect_Method_klass();
1712 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1713 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1714 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1715 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1716 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1717 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1718 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1719 // The generic signature and annotations fields are only present in 1.5
1720 signature_offset = -1;
1721 annotations_offset = -1;
1722 parameter_annotations_offset = -1;
1723 annotation_default_offset = -1;
1724 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1725 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1726 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1727 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1728 }
1729
1730 Handle java_lang_reflect_Method::create(TRAPS) {
1731 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1732 klassOop klass = SystemDictionary::reflect_Method_klass();
1733 // This class is eagerly initialized during VM initialization, since we keep a refence
1734 // to one of the methods
1735 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1736 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1737 }
1738
1739 oop java_lang_reflect_Method::clazz(oop reflect) {
1740 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1741 return reflect->obj_field(clazz_offset);
1742 }
1743
1744 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1745 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1746 reflect->obj_field_put(clazz_offset, value);
1747 }
1748
1749 int java_lang_reflect_Method::slot(oop reflect) {
1750 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1751 return reflect->int_field(slot_offset);
1752 }
1753
1754 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1755 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1756 reflect->int_field_put(slot_offset, value);
1757 }
1758
1759 oop java_lang_reflect_Method::name(oop method) {
1760 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1761 return method->obj_field(name_offset);
1762 }
1763
1764 void java_lang_reflect_Method::set_name(oop method, oop value) {
1765 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1766 method->obj_field_put(name_offset, value);
1767 }
1768
1769 oop java_lang_reflect_Method::return_type(oop method) {
1770 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1771 return method->obj_field(returnType_offset);
1772 }
1773
1774 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1775 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1776 method->obj_field_put(returnType_offset, value);
1777 }
1778
1779 oop java_lang_reflect_Method::parameter_types(oop method) {
1780 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1781 return method->obj_field(parameterTypes_offset);
1782 }
1783
1784 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1785 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1786 method->obj_field_put(parameterTypes_offset, value);
1787 }
1788
1789 oop java_lang_reflect_Method::exception_types(oop method) {
1790 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1791 return method->obj_field(exceptionTypes_offset);
1792 }
1793
1794 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1795 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1796 method->obj_field_put(exceptionTypes_offset, value);
1797 }
1798
1799 int java_lang_reflect_Method::modifiers(oop method) {
1800 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1801 return method->int_field(modifiers_offset);
1802 }
1803
1804 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1806 method->int_field_put(modifiers_offset, value);
1807 }
1808
1809 bool java_lang_reflect_Method::has_signature_field() {
1810 return (signature_offset >= 0);
1811 }
1812
1813 oop java_lang_reflect_Method::signature(oop method) {
1814 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1815 assert(has_signature_field(), "signature field must be present");
1816 return method->obj_field(signature_offset);
1817 }
1818
1819 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1820 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1821 assert(has_signature_field(), "signature field must be present");
1822 method->obj_field_put(signature_offset, value);
1823 }
1824
1825 bool java_lang_reflect_Method::has_annotations_field() {
1826 return (annotations_offset >= 0);
1827 }
1828
1829 oop java_lang_reflect_Method::annotations(oop method) {
1830 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1831 assert(has_annotations_field(), "annotations field must be present");
1832 return method->obj_field(annotations_offset);
1833 }
1834
1835 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1836 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1837 assert(has_annotations_field(), "annotations field must be present");
1838 method->obj_field_put(annotations_offset, value);
1839 }
1840
1841 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1842 return (parameter_annotations_offset >= 0);
1843 }
1844
1845 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1847 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1848 return method->obj_field(parameter_annotations_offset);
1849 }
1850
1851 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1852 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1853 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1854 method->obj_field_put(parameter_annotations_offset, value);
1855 }
1856
1857 bool java_lang_reflect_Method::has_annotation_default_field() {
1858 return (annotation_default_offset >= 0);
1859 }
1860
1861 oop java_lang_reflect_Method::annotation_default(oop method) {
1862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1863 assert(has_annotation_default_field(), "annotation default field must be present");
1864 return method->obj_field(annotation_default_offset);
1865 }
1866
1867 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1868 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1869 assert(has_annotation_default_field(), "annotation default field must be present");
1870 method->obj_field_put(annotation_default_offset, value);
1871 }
1872
1873 void java_lang_reflect_Constructor::compute_offsets() {
1874 klassOop k = SystemDictionary::reflect_Constructor_klass();
1875 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1876 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1877 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1878 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1879 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1880 // The generic signature and annotations fields are only present in 1.5
1881 signature_offset = -1;
1882 annotations_offset = -1;
1883 parameter_annotations_offset = -1;
1884 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1885 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1886 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1887 }
1888
1889 Handle java_lang_reflect_Constructor::create(TRAPS) {
1890 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1891 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1892 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1893 instanceKlassHandle klass (THREAD, k);
1894 // Ensure it is initialized
1895 klass->initialize(CHECK_NH);
1896 return klass->allocate_instance_handle(CHECK_NH);
1897 }
1898
1899 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1900 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1901 return reflect->obj_field(clazz_offset);
1902 }
1903
1904 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1905 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1906 reflect->obj_field_put(clazz_offset, value);
1907 }
1908
1909 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1910 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1911 return constructor->obj_field(parameterTypes_offset);
1912 }
1913
1914 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1915 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1916 constructor->obj_field_put(parameterTypes_offset, value);
1917 }
1918
1919 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1920 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1921 return constructor->obj_field(exceptionTypes_offset);
1922 }
1923
1924 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1925 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1926 constructor->obj_field_put(exceptionTypes_offset, value);
1927 }
1928
1929 int java_lang_reflect_Constructor::slot(oop reflect) {
1930 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1931 return reflect->int_field(slot_offset);
1932 }
1933
1934 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1935 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1936 reflect->int_field_put(slot_offset, value);
1937 }
1938
1939 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1941 return constructor->int_field(modifiers_offset);
1942 }
1943
1944 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1945 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1946 constructor->int_field_put(modifiers_offset, value);
1947 }
1948
1949 bool java_lang_reflect_Constructor::has_signature_field() {
1950 return (signature_offset >= 0);
1951 }
1952
1953 oop java_lang_reflect_Constructor::signature(oop constructor) {
1954 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1955 assert(has_signature_field(), "signature field must be present");
1956 return constructor->obj_field(signature_offset);
1957 }
1958
1959 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
1960 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1961 assert(has_signature_field(), "signature field must be present");
1962 constructor->obj_field_put(signature_offset, value);
1963 }
1964
1965 bool java_lang_reflect_Constructor::has_annotations_field() {
1966 return (annotations_offset >= 0);
1967 }
1968
1969 oop java_lang_reflect_Constructor::annotations(oop constructor) {
1970 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1971 assert(has_annotations_field(), "annotations field must be present");
1972 return constructor->obj_field(annotations_offset);
1973 }
1974
1975 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
1976 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1977 assert(has_annotations_field(), "annotations field must be present");
1978 constructor->obj_field_put(annotations_offset, value);
1979 }
1980
1981 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
1982 return (parameter_annotations_offset >= 0);
1983 }
1984
1985 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
1986 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1987 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1988 return method->obj_field(parameter_annotations_offset);
1989 }
1990
1991 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
1992 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1993 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1994 method->obj_field_put(parameter_annotations_offset, value);
1995 }
1996
1997 void java_lang_reflect_Field::compute_offsets() {
1998 klassOop k = SystemDictionary::reflect_Field_klass();
1999 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2000 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2001 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2002 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2003 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2004 // The generic signature and annotations fields are only present in 1.5
2005 signature_offset = -1;
2006 annotations_offset = -1;
2007 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2008 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2009 }
2010
2011 Handle java_lang_reflect_Field::create(TRAPS) {
2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2013 Symbol* name = vmSymbols::java_lang_reflect_Field();
2014 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2015 instanceKlassHandle klass (THREAD, k);
2016 // Ensure it is initialized
2017 klass->initialize(CHECK_NH);
2018 return klass->allocate_instance_handle(CHECK_NH);
2019 }
2020
2021 oop java_lang_reflect_Field::clazz(oop reflect) {
2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2023 return reflect->obj_field(clazz_offset);
2024 }
2025
2026 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 reflect->obj_field_put(clazz_offset, value);
2029 }
2030
2031 oop java_lang_reflect_Field::name(oop field) {
2032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2033 return field->obj_field(name_offset);
2034 }
2035
2036 void java_lang_reflect_Field::set_name(oop field, oop value) {
2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2038 field->obj_field_put(name_offset, value);
2039 }
2040
2041 oop java_lang_reflect_Field::type(oop field) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 return field->obj_field(type_offset);
2044 }
2045
2046 void java_lang_reflect_Field::set_type(oop field, oop value) {
2047 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2048 field->obj_field_put(type_offset, value);
2049 }
2050
2051 int java_lang_reflect_Field::slot(oop reflect) {
2052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2053 return reflect->int_field(slot_offset);
2054 }
2055
2056 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2058 reflect->int_field_put(slot_offset, value);
2059 }
2060
2061 int java_lang_reflect_Field::modifiers(oop field) {
2062 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2063 return field->int_field(modifiers_offset);
2064 }
2065
2066 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2067 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2068 field->int_field_put(modifiers_offset, value);
2069 }
2070
2071 bool java_lang_reflect_Field::has_signature_field() {
2072 return (signature_offset >= 0);
2073 }
2074
2075 oop java_lang_reflect_Field::signature(oop field) {
2076 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2077 assert(has_signature_field(), "signature field must be present");
2078 return field->obj_field(signature_offset);
2079 }
2080
2081 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2082 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2083 assert(has_signature_field(), "signature field must be present");
2084 field->obj_field_put(signature_offset, value);
2085 }
2086
2087 bool java_lang_reflect_Field::has_annotations_field() {
2088 return (annotations_offset >= 0);
2089 }
2090
2091 oop java_lang_reflect_Field::annotations(oop field) {
2092 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2093 assert(has_annotations_field(), "annotations field must be present");
2094 return field->obj_field(annotations_offset);
2095 }
2096
2097 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2099 assert(has_annotations_field(), "annotations field must be present");
2100 field->obj_field_put(annotations_offset, value);
2101 }
2102
2103
2104 void sun_reflect_ConstantPool::compute_offsets() {
2105 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2106 // This null test can be removed post beta
2107 if (k != NULL) {
2108 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2109 }
2110 }
2111
2112
2113 Handle sun_reflect_ConstantPool::create(TRAPS) {
2114 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2115 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2116 instanceKlassHandle klass (THREAD, k);
2117 // Ensure it is initialized
2118 klass->initialize(CHECK_NH);
2119 return klass->allocate_instance_handle(CHECK_NH);
2120 }
2121
2122
2123 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2124 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2125 return reflect->obj_field(_cp_oop_offset);
2126 }
2127
2128
2129 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2130 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2131 reflect->obj_field_put(_cp_oop_offset, value);
2132 }
2133
2134 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2135 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2136 // This null test can be removed post beta
2137 if (k != NULL) {
2138 compute_offset(_base_offset, k,
2139 vmSymbols::base_name(), vmSymbols::object_signature());
2140 }
2141 }
2142
2143 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2144 klassOop k = SystemDictionary::box_klass(type);
2145 if (k == NULL) return NULL;
2146 instanceKlassHandle h (THREAD, k);
2147 if (!h->is_initialized()) h->initialize(CHECK_0);
2148 return h->allocate_instance(THREAD);
2149 }
2150
2151
2152 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2153 oop box = initialize_and_allocate(type, CHECK_0);
2154 if (box == NULL) return NULL;
2155 switch (type) {
2156 case T_BOOLEAN:
2157 box->bool_field_put(value_offset, value->z);
2158 break;
2159 case T_CHAR:
2160 box->char_field_put(value_offset, value->c);
2161 break;
2162 case T_FLOAT:
2163 box->float_field_put(value_offset, value->f);
2164 break;
2165 case T_DOUBLE:
2166 box->double_field_put(long_value_offset, value->d);
2167 break;
2168 case T_BYTE:
2169 box->byte_field_put(value_offset, value->b);
2170 break;
2171 case T_SHORT:
2172 box->short_field_put(value_offset, value->s);
2173 break;
2174 case T_INT:
2175 box->int_field_put(value_offset, value->i);
2176 break;
2177 case T_LONG:
2178 box->long_field_put(long_value_offset, value->j);
2179 break;
2180 default:
2181 return NULL;
2182 }
2183 return box;
2184 }
2185
2186
2187 BasicType java_lang_boxing_object::basic_type(oop box) {
2188 if (box == NULL) return T_ILLEGAL;
2189 BasicType type = SystemDictionary::box_klass_type(box->klass());
2190 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2191 return T_ILLEGAL;
2192 return type;
2193 }
2194
2195
2196 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2197 BasicType type = SystemDictionary::box_klass_type(box->klass());
2198 switch (type) {
2199 case T_BOOLEAN:
2200 value->z = box->bool_field(value_offset);
2201 break;
2202 case T_CHAR:
2203 value->c = box->char_field(value_offset);
2204 break;
2205 case T_FLOAT:
2206 value->f = box->float_field(value_offset);
2207 break;
2208 case T_DOUBLE:
2209 value->d = box->double_field(long_value_offset);
2210 break;
2211 case T_BYTE:
2212 value->b = box->byte_field(value_offset);
2213 break;
2214 case T_SHORT:
2215 value->s = box->short_field(value_offset);
2216 break;
2217 case T_INT:
2218 value->i = box->int_field(value_offset);
2219 break;
2220 case T_LONG:
2221 value->j = box->long_field(long_value_offset);
2222 break;
2223 default:
2224 return T_ILLEGAL;
2225 } // end switch
2226 return type;
2227 }
2228
2229
2230 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2231 BasicType type = SystemDictionary::box_klass_type(box->klass());
2232 switch (type) {
2233 case T_BOOLEAN:
2234 box->bool_field_put(value_offset, value->z);
2235 break;
2236 case T_CHAR:
2237 box->char_field_put(value_offset, value->c);
2238 break;
2239 case T_FLOAT:
2240 box->float_field_put(value_offset, value->f);
2241 break;
2242 case T_DOUBLE:
2243 box->double_field_put(long_value_offset, value->d);
2244 break;
2245 case T_BYTE:
2246 box->byte_field_put(value_offset, value->b);
2247 break;
2248 case T_SHORT:
2249 box->short_field_put(value_offset, value->s);
2250 break;
2251 case T_INT:
2252 box->int_field_put(value_offset, value->i);
2253 break;
2254 case T_LONG:
2255 box->long_field_put(long_value_offset, value->j);
2256 break;
2257 default:
2258 return T_ILLEGAL;
2259 } // end switch
2260 return type;
2261 }
2262
2263
2264 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2265 switch (type) {
2266 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2267 case T_CHAR: st->print("%d", value->c); break;
2268 case T_BYTE: st->print("%d", value->b); break;
2269 case T_SHORT: st->print("%d", value->s); break;
2270 case T_INT: st->print("%d", value->i); break;
2271 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2272 case T_FLOAT: st->print("%f", value->f); break;
2273 case T_DOUBLE: st->print("%lf", value->d); break;
2274 default: st->print("type %d?", type); break;
2275 }
2276 }
2277
2278
2279 // Support for java_lang_ref_Reference
2280 oop java_lang_ref_Reference::pending_list_lock() {
2281 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2282 address addr = ik->static_field_addr(static_lock_offset);
2283 if (UseCompressedOops) {
2284 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2285 } else {
2286 return oopDesc::load_decode_heap_oop((oop*)addr);
2287 }
2288 }
2289
2290 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2291 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2292 address addr = ik->static_field_addr(static_pending_offset);
2293 // XXX This might not be HeapWord aligned, almost rather be char *.
2294 return (HeapWord*)addr;
2295 }
2296
2297 oop java_lang_ref_Reference::pending_list() {
2298 char *addr = (char *)pending_list_addr();
2299 if (UseCompressedOops) {
2300 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2301 } else {
2302 return oopDesc::load_decode_heap_oop((oop*)addr);
2303 }
2304 }
2305
2306
2307 // Support for java_lang_ref_SoftReference
2308
2309 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2310 return ref->long_field(timestamp_offset);
2311 }
2312
2313 jlong java_lang_ref_SoftReference::clock() {
2314 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2315 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2316 return *offset;
2317 }
2318
2319 void java_lang_ref_SoftReference::set_clock(jlong value) {
2320 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2321 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2322 *offset = value;
2323 }
2324
2325
2326 // Support for java_lang_invoke_MethodHandle
2327
2328 int java_lang_invoke_MethodHandle::_type_offset;
2329 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2330 int java_lang_invoke_MethodHandle::_vmentry_offset;
2331
2332 int java_lang_invoke_MemberName::_clazz_offset;
2333 int java_lang_invoke_MemberName::_name_offset;
2334 int java_lang_invoke_MemberName::_type_offset;
2335 int java_lang_invoke_MemberName::_flags_offset;
2336 int java_lang_invoke_MemberName::_vmtarget_offset;
2337 int java_lang_invoke_MemberName::_vmindex_offset;
2338
2339 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2340
2341 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2342 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2343
2344 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2345
2346 int java_lang_invoke_CountingMethodHandle::_vmcount_offset;
2347
2348 void java_lang_invoke_MethodHandle::compute_offsets() {
2349 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2350 if (klass_oop != NULL && EnableInvokeDynamic) {
2351 bool allow_super = false;
2352 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2353 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2354 }
2355 }
2356
2357 void java_lang_invoke_MemberName::compute_offsets() {
2358 klassOop klass_oop = SystemDictionary::MemberName_klass();
2359 if (klass_oop != NULL && EnableInvokeDynamic) {
2360 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2361 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2362 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2363 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2364 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2365 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2366 }
2367 }
2368
2369 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2370 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2371 if (k != NULL && EnableInvokeDynamic) {
2372 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2373 }
2374 }
2375
2376 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2377 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2378 if (k != NULL && EnableInvokeDynamic) {
2379 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2380 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2381 }
2382 }
2383
2384 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2385 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2386 if (k != NULL && EnableInvokeDynamic) {
2387 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2388 }
2389 }
2390
2391 void java_lang_invoke_CountingMethodHandle::compute_offsets() {
2392 klassOop k = SystemDictionary::CountingMethodHandle_klass();
2393 if (k != NULL && EnableInvokeDynamic) {
2394 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true);
2395 }
2396 }
2397
2398 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) {
2399 assert(is_instance(mh), "CMH only");
2400 return mh->int_field(_vmcount_offset);
2401 }
2402
2403 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) {
2404 assert(is_instance(mh), "CMH only");
2405 mh->int_field_put(_vmcount_offset, count);
2406 }
2407
2408 oop java_lang_invoke_MethodHandle::type(oop mh) {
2409 return mh->obj_field(_type_offset);
2410 }
2411
2412 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2413 mh->obj_field_put(_type_offset, mtype);
2414 }
2415
2416 // fetch type.form.vmslots, which is the number of JVM stack slots
2417 // required to carry the arguments of this MH
2418 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2419 oop mtype = type(mh);
2420 if (mtype == NULL) return 0; // Java code would get NPE
2421 oop form = java_lang_invoke_MethodType::form(mtype);
2422 if (form == NULL) return 0; // Java code would get NPE
2423 return java_lang_invoke_MethodTypeForm::vmslots(form);
2424 }
2425
2426 // fetch the low-level entry point for this mh
2427 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2428 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2429 }
2430
2431 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2432 assert(_vmentry_offset != 0, "must be present");
2433
2434 // This is always the final step that initializes a valid method handle:
2435 mh->release_address_field_put(_vmentry_offset, (address) me);
2436
2437 // There should be enough memory barriers on exit from native methods
2438 // to ensure that the MH is fully initialized to all threads before
2439 // Java code can publish it in global data structures.
2440 // But just in case, we use release_address_field_put.
2441 }
2442
2443 /// MemberName accessors
2444
2445 oop java_lang_invoke_MemberName::clazz(oop mname) {
2446 assert(is_instance(mname), "wrong type");
2447 return mname->obj_field(_clazz_offset);
2448 }
2449
2450 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2451 assert(is_instance(mname), "wrong type");
2452 mname->obj_field_put(_clazz_offset, clazz);
2453 }
2454
2455 oop java_lang_invoke_MemberName::name(oop mname) {
2456 assert(is_instance(mname), "wrong type");
2457 return mname->obj_field(_name_offset);
2458 }
2459
2460 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2461 assert(is_instance(mname), "wrong type");
2462 mname->obj_field_put(_name_offset, name);
2463 }
2464
2465 oop java_lang_invoke_MemberName::type(oop mname) {
2466 assert(is_instance(mname), "wrong type");
2467 return mname->obj_field(_type_offset);
2468 }
2469
2470 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2471 assert(is_instance(mname), "wrong type");
2472 mname->obj_field_put(_type_offset, type);
2473 }
2474
2475 int java_lang_invoke_MemberName::flags(oop mname) {
2476 assert(is_instance(mname), "wrong type");
2477 return mname->int_field(_flags_offset);
2478 }
2479
2480 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2481 assert(is_instance(mname), "wrong type");
2482 mname->int_field_put(_flags_offset, flags);
2483 }
2484
2485 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2486 assert(is_instance(mname), "wrong type");
2487 return mname->obj_field(_vmtarget_offset);
2488 }
2489
2490 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2491 assert(is_instance(mname), "wrong type");
2492 mname->obj_field_put(_vmtarget_offset, ref);
2493 }
2494
2495 int java_lang_invoke_MemberName::vmindex(oop mname) {
2496 assert(is_instance(mname), "wrong type");
2497 return mname->int_field(_vmindex_offset);
2498 }
2499
2500 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2501 assert(is_instance(mname), "wrong type");
2502 mname->int_field_put(_vmindex_offset, index);
2503 }
2504
2505 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2506 assert(is_instance(mh), "MH only");
2507 return mh->obj_field(_vmtarget_offset);
2508 }
2509
2510 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2511 assert(is_instance(mh), "MH only");
2512 mh->obj_field_put(_vmtarget_offset, ref);
2513 }
2514
2515 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2516 assert(is_instance(mh), "DMH only");
2517 return mh->int_field(_vmindex_offset);
2518 }
2519
2520 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2521 assert(is_instance(mh), "DMH only");
2522 mh->int_field_put(_vmindex_offset, index);
2523 }
2524
2525 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2526 assert(is_instance(mh), "BMH only");
2527 return mh->int_field(_vmargslot_offset);
2528 }
2529
2530 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2531 assert(is_instance(mh), "BMH only");
2532 return mh->obj_field(_argument_offset);
2533 }
2534
2535 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2536 assert(is_instance(mh), "AMH only");
2537 return mh->int_field(_conversion_offset);
2538 }
2539
2540 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2541 assert(is_instance(mh), "AMH only");
2542 mh->int_field_put(_conversion_offset, conv);
2543 }
2544
2545
2546 // Support for java_lang_invoke_MethodType
2547
2548 int java_lang_invoke_MethodType::_rtype_offset;
2549 int java_lang_invoke_MethodType::_ptypes_offset;
2550 int java_lang_invoke_MethodType::_form_offset;
2551
2552 void java_lang_invoke_MethodType::compute_offsets() {
2553 klassOop k = SystemDictionary::MethodType_klass();
2554 if (k != NULL) {
2555 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2556 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2557 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2558 }
2559 }
2560
2561 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2562 st->print("(");
2563 objArrayOop pts = ptypes(mt);
2564 for (int i = 0, limit = pts->length(); i < limit; i++) {
2565 java_lang_Class::print_signature(pts->obj_at(i), st);
2566 }
2567 st->print(")");
2568 java_lang_Class::print_signature(rtype(mt), st);
2569 }
2570
2571 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2572 ResourceMark rm;
2573 stringStream buffer(128);
2574 print_signature(mt, &buffer);
2575 const char* sigstr = buffer.base();
2576 int siglen = (int) buffer.size();
2577 Symbol *name;
2578 if (!intern_if_not_found) {
2579 name = SymbolTable::probe(sigstr, siglen);
2580 } else {
2581 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2582 }
2583 return name;
2584 }
2585
2586 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2587 if (rtype(mt1) != rtype(mt2))
2588 return false;
2589 if (ptype_count(mt1) != ptype_count(mt2))
2590 return false;
2591 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2592 if (ptype(mt1, i) != ptype(mt2, i))
2593 return false;
2594 }
2595 return true;
2596 }
2597
2598 oop java_lang_invoke_MethodType::rtype(oop mt) {
2599 assert(is_instance(mt), "must be a MethodType");
2600 return mt->obj_field(_rtype_offset);
2601 }
2602
2603 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2604 assert(is_instance(mt), "must be a MethodType");
2605 return (objArrayOop) mt->obj_field(_ptypes_offset);
2606 }
2607
2608 oop java_lang_invoke_MethodType::form(oop mt) {
2609 assert(is_instance(mt), "must be a MethodType");
2610 return mt->obj_field(_form_offset);
2611 }
2612
2613 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2614 return ptypes(mt)->obj_at(idx);
2615 }
2616
2617 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2618 return ptypes(mt)->length();
2619 }
2620
2621
2622
2623 // Support for java_lang_invoke_MethodTypeForm
2624
2625 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2626 int java_lang_invoke_MethodTypeForm::_vmlayout_offset;
2627 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2628 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2629
2630 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2631 klassOop k = SystemDictionary::MethodTypeForm_klass();
2632 if (k != NULL) {
2633 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2634 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature());
2635 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2636 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2637 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2638 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2639 }
2640 }
2641
2642 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2643 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2644 assert(_vmslots_offset > 0, "");
2645 return mtform->int_field(_vmslots_offset);
2646 }
2647
2648 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) {
2649 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2650 assert(_vmlayout_offset > 0, "");
2651 return mtform->obj_field(_vmlayout_offset);
2652 }
2653
2654 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) {
2655 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2656 oop previous = vmlayout(mtform);
2657 if (previous != NULL) {
2658 return previous; // someone else beat us to it
2659 }
2660 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset);
2661 OrderAccess::storestore(); // make sure our copy is fully committed
2662 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous);
2663 if (previous != NULL) {
2664 return previous; // someone else beat us to it
2665 }
2666 return cookie;
2667 }
2668
2669 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2670 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2671 return mtform->obj_field(_erasedType_offset);
2672 }
2673
2674 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2675 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2676 return mtform->obj_field(_genericInvoker_offset);
2677 }
2678
2679
2680 // Support for java_lang_invoke_CallSite
2681
2682 int java_lang_invoke_CallSite::_target_offset;
2683
2684 void java_lang_invoke_CallSite::compute_offsets() {
2685 if (!EnableInvokeDynamic) return;
2686 klassOop k = SystemDictionary::CallSite_klass();
2687 if (k != NULL) {
2688 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2689 }
2690
2691 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile
2692 // (For C2: keep this until we have throttling logic for uncommon traps.)
2693 if (k != NULL) {
2694 instanceKlass* ik = instanceKlass::cast(k);
2695 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature());
2696 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature());
2697 guarantee(m_normal && m_volatile, "must exist");
2698 m_normal->set_not_compilable_quietly();
2699 m_volatile->set_not_compilable_quietly();
2700 }
2701 }
2702
2703
2704 // Support for java_security_AccessControlContext
2705
2706 int java_security_AccessControlContext::_context_offset = 0;
2707 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2708 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2709
2710 void java_security_AccessControlContext::compute_offsets() {
2711 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2712 fieldDescriptor fd;
2713 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2714
2715 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2716 fatal("Invalid layout of java.security.AccessControlContext");
2717 }
2718 _context_offset = fd.offset();
2719
2720 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2721 fatal("Invalid layout of java.security.AccessControlContext");
2722 }
2723 _privilegedContext_offset = fd.offset();
2724
2725 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2726 fatal("Invalid layout of java.security.AccessControlContext");
2727 }
2728 _isPrivileged_offset = fd.offset();
2729 }
2730
2731
2732 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2733 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2734 // Ensure klass is initialized
2735 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2736 // Allocate result
2737 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2738 // Fill in values
2739 result->obj_field_put(_context_offset, context());
2740 result->obj_field_put(_privilegedContext_offset, privileged_context());
2741 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2742 return result;
2743 }
2744
2745
2746 // Support for java_lang_ClassLoader
2747 bool java_lang_ClassLoader::offsets_computed = false;
2748 int java_lang_ClassLoader::parallelCapable_offset = -1;
2749
2750 void java_lang_ClassLoader::compute_offsets() {
2751 assert(!offsets_computed, "offsets should be initialized only once");
2752 offsets_computed = true;
2753
2754 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2755 klassOop k1 = SystemDictionary::ClassLoader_klass();
2756 compute_optional_offset(parallelCapable_offset,
2757 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2758 }
2759
2760 oop java_lang_ClassLoader::parent(oop loader) {
2761 assert(loader->is_oop(), "loader must be oop");
2762 return loader->obj_field(parent_offset);
2763 }
2764
2765
2766 // For class loader classes, parallelCapable defined
2767 // based on non-null field
2768 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2769 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2770 if (!JDK_Version::is_gte_jdk17x_version()
2771 || parallelCapable_offset == -1) {
2772 // Default for backward compatibility is false
2773 return false;
2774 }
2775 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2776 }
2777
2778 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2779 // Fix for 4474172; see evaluation for more details
2780 loader = non_reflection_class_loader(loader);
2781
2782 oop cl = SystemDictionary::java_system_loader();
2783 while(cl != NULL) {
2784 if (cl == loader) return true;
2785 cl = parent(cl);
2786 }
2787 return false;
2788 }
2789
2790 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2791 if (loader != NULL) {
2792 // See whether this is one of the class loaders associated with
2793 // the generated bytecodes for reflection, and if so, "magically"
2794 // delegate to its parent to prevent class loading from occurring
2795 // in places where applications using reflection didn't expect it.
2796 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2797 // This might be null in non-1.4 JDKs
2798 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2799 return parent(loader);
2800 }
2801 }
2802 return loader;
2803 }
2804
2805
2806 // Support for java_lang_System
2807 int java_lang_System::in_offset_in_bytes() {
2808 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2809 }
2810
2811
2812 int java_lang_System::out_offset_in_bytes() {
2813 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2814 }
2815
2816
2817 int java_lang_System::err_offset_in_bytes() {
2818 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2819 }
2820
2821
2822
2823 int java_lang_String::value_offset;
2824 int java_lang_String::offset_offset;
2825 int java_lang_String::count_offset;
2826 int java_lang_String::hash_offset;
2827 int java_lang_Class::_klass_offset;
2828 int java_lang_Class::_array_klass_offset;
2829 int java_lang_Class::_resolved_constructor_offset;
2830 int java_lang_Class::_oop_size_offset;
2831 int java_lang_Class::_static_oop_field_count_offset;
2832 int java_lang_Throwable::backtrace_offset;
2833 int java_lang_Throwable::detailMessage_offset;
2834 int java_lang_Throwable::cause_offset;
2835 int java_lang_Throwable::stackTrace_offset;
2836 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2837 int java_lang_reflect_AccessibleObject::override_offset;
2838 int java_lang_reflect_Method::clazz_offset;
2839 int java_lang_reflect_Method::name_offset;
2840 int java_lang_reflect_Method::returnType_offset;
2841 int java_lang_reflect_Method::parameterTypes_offset;
2842 int java_lang_reflect_Method::exceptionTypes_offset;
2843 int java_lang_reflect_Method::slot_offset;
2844 int java_lang_reflect_Method::modifiers_offset;
2845 int java_lang_reflect_Method::signature_offset;
2846 int java_lang_reflect_Method::annotations_offset;
2847 int java_lang_reflect_Method::parameter_annotations_offset;
2848 int java_lang_reflect_Method::annotation_default_offset;
2849 int java_lang_reflect_Constructor::clazz_offset;
2850 int java_lang_reflect_Constructor::parameterTypes_offset;
2851 int java_lang_reflect_Constructor::exceptionTypes_offset;
2852 int java_lang_reflect_Constructor::slot_offset;
2853 int java_lang_reflect_Constructor::modifiers_offset;
2854 int java_lang_reflect_Constructor::signature_offset;
2855 int java_lang_reflect_Constructor::annotations_offset;
2856 int java_lang_reflect_Constructor::parameter_annotations_offset;
2857 int java_lang_reflect_Field::clazz_offset;
2858 int java_lang_reflect_Field::name_offset;
2859 int java_lang_reflect_Field::type_offset;
2860 int java_lang_reflect_Field::slot_offset;
2861 int java_lang_reflect_Field::modifiers_offset;
2862 int java_lang_reflect_Field::signature_offset;
2863 int java_lang_reflect_Field::annotations_offset;
2864 int java_lang_boxing_object::value_offset;
2865 int java_lang_boxing_object::long_value_offset;
2866 int java_lang_ref_Reference::referent_offset;
2867 int java_lang_ref_Reference::queue_offset;
2868 int java_lang_ref_Reference::next_offset;
2869 int java_lang_ref_Reference::discovered_offset;
2870 int java_lang_ref_Reference::static_lock_offset;
2871 int java_lang_ref_Reference::static_pending_offset;
2872 int java_lang_ref_Reference::number_of_fake_oop_fields;
2873 int java_lang_ref_SoftReference::timestamp_offset;
2874 int java_lang_ref_SoftReference::static_clock_offset;
2875 int java_lang_ClassLoader::parent_offset;
2876 int java_lang_System::static_in_offset;
2877 int java_lang_System::static_out_offset;
2878 int java_lang_System::static_err_offset;
2879 int java_lang_StackTraceElement::declaringClass_offset;
2880 int java_lang_StackTraceElement::methodName_offset;
2881 int java_lang_StackTraceElement::fileName_offset;
2882 int java_lang_StackTraceElement::lineNumber_offset;
2883 int java_lang_AssertionStatusDirectives::classes_offset;
2884 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2885 int java_lang_AssertionStatusDirectives::packages_offset;
2886 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2887 int java_lang_AssertionStatusDirectives::deflt_offset;
2888 int java_nio_Buffer::_limit_offset;
2889 int sun_misc_AtomicLongCSImpl::_value_offset;
2890 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2891 int sun_reflect_ConstantPool::_cp_oop_offset;
2892 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2893
2894
2895 // Support for java_lang_StackTraceElement
2896
2897 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2898 element->obj_field_put(fileName_offset, value);
2899 }
2900
2901 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2902 element->obj_field_put(declaringClass_offset, value);
2903 }
2904
2905 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2906 element->obj_field_put(methodName_offset, value);
2907 }
2908
2909 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2910 element->int_field_put(lineNumber_offset, value);
2911 }
2912
2913
2914 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2915
2916 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2917 o->obj_field_put(classes_offset, val);
2918 }
2919
2920 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2921 o->obj_field_put(classEnabled_offset, val);
2922 }
2923
2924 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2925 o->obj_field_put(packages_offset, val);
2926 }
2927
2928 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2929 o->obj_field_put(packageEnabled_offset, val);
2930 }
2931
2932 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2933 o->bool_field_put(deflt_offset, val);
2934 }
2935
2936
2937 // Support for intrinsification of java.nio.Buffer.checkIndex
2938 int java_nio_Buffer::limit_offset() {
2939 return _limit_offset;
2940 }
2941
2942
2943 void java_nio_Buffer::compute_offsets() {
2944 klassOop k = SystemDictionary::nio_Buffer_klass();
2945 assert(k != NULL, "must be loaded in 1.4+");
2946 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2947 }
2948
2949 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
2950 int sun_misc_AtomicLongCSImpl::value_offset() {
2951 assert(SystemDictionary::AtomicLongCSImpl_klass() != NULL, "can't call this");
2952 return _value_offset;
2953 }
2954
2955
2956 void sun_misc_AtomicLongCSImpl::compute_offsets() {
2957 klassOop k = SystemDictionary::AtomicLongCSImpl_klass();
2958 // If this class is not present, its value field offset won't be referenced.
2959 if (k != NULL) {
2960 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
2961 }
2962 }
2963
2964 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2965 if (_owner_offset != 0) return;
2966
2967 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2968 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2969 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
2970 compute_offset(_owner_offset, k,
2971 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2972 }
2973
2974 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2975 assert(_owner_offset != 0, "Must be initialized");
2976 return obj->obj_field(_owner_offset);
2977 }
2978
2979 // Compute hard-coded offsets
2980 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2981 // are not available to determine the offset_of_static_fields.
2982 void JavaClasses::compute_hard_coded_offsets() {
2983 const int x = heapOopSize;
2984 const int header = instanceOopDesc::base_offset_in_bytes();
2985
2986 // Do the String Class
2987 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header;
2988 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header;
2989 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint);
2990 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint);
2991
2992 // Throwable Class
2993 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
2994 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
2995 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
2996 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
2997 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
2998
2999 // java_lang_boxing_object
3000 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3001 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3002
3003 // java_lang_ref_Reference:
3004 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3005 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3006 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3007 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3008 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3009 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3010 // Artificial fields for java_lang_ref_Reference
3011 // The first field is for the discovered field added in 1.4
3012 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3013
3014 // java_lang_ref_SoftReference Class
3015 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3016 // Don't multiply static fields because they are always in wordSize units
3017 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3018
3019 // java_lang_ClassLoader
3020 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3021
3022 // java_lang_System
3023 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3024 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3025 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3026
3027 // java_lang_StackTraceElement
3028 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3029 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3030 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3031 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3032 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3033 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3034 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3035 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3036 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3037
3038 }
3039
3040
3041 // Compute non-hard-coded field offsets of all the classes in this file
3042 void JavaClasses::compute_offsets() {
3043 // java_lang_Class::compute_offsets was called earlier in bootstrap
3044 java_lang_ClassLoader::compute_offsets();
3045 java_lang_Thread::compute_offsets();
3046 java_lang_ThreadGroup::compute_offsets();
3047 if (EnableInvokeDynamic) {
3048 java_lang_invoke_MethodHandle::compute_offsets();
3049 java_lang_invoke_MemberName::compute_offsets();
3050 java_lang_invoke_DirectMethodHandle::compute_offsets();
3051 java_lang_invoke_BoundMethodHandle::compute_offsets();
3052 java_lang_invoke_AdapterMethodHandle::compute_offsets();
3053 java_lang_invoke_MethodType::compute_offsets();
3054 java_lang_invoke_MethodTypeForm::compute_offsets();
3055 java_lang_invoke_CallSite::compute_offsets();
3056 java_lang_invoke_CountingMethodHandle::compute_offsets();
3057 }
3058 java_security_AccessControlContext::compute_offsets();
3059 // Initialize reflection classes. The layouts of these classes
3060 // changed with the new reflection implementation in JDK 1.4, and
3061 // since the Universe doesn't know what JDK version it is until this
3062 // point we defer computation of these offsets until now.
3063 java_lang_reflect_AccessibleObject::compute_offsets();
3064 java_lang_reflect_Method::compute_offsets();
3065 java_lang_reflect_Constructor::compute_offsets();
3066 java_lang_reflect_Field::compute_offsets();
3067 if (JDK_Version::is_gte_jdk14x_version()) {
3068 java_nio_Buffer::compute_offsets();
3069 }
3070 if (JDK_Version::is_gte_jdk15x_version()) {
3071 sun_reflect_ConstantPool::compute_offsets();
3072 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3073 }
3074 sun_misc_AtomicLongCSImpl::compute_offsets();
3075
3076 // generated interpreter code wants to know about the offsets we just computed:
3077 AbstractAssembler::update_delayed_values();
3078 }
3079
3080 #ifndef PRODUCT
3081
3082 // These functions exist to assert the validity of hard-coded field offsets to guard
3083 // against changes in the class files
3084
3085 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3086 EXCEPTION_MARK;
3087 fieldDescriptor fd;
3088 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3089 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3090 instanceKlassHandle h_klass (THREAD, k);
3091 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3092 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3093 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3094 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3095 return false;
3096 }
3097 if (fd.is_static()) {
3098 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3099 return false;
3100 }
3101 if (fd.offset() == hardcoded_offset ) {
3102 return true;
3103 } else {
3104 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3105 klass_name, field_name, hardcoded_offset, fd.offset());
3106 return false;
3107 }
3108 }
3109
3110
3111 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3112 EXCEPTION_MARK;
3113 fieldDescriptor fd;
3114 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3115 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3116 instanceKlassHandle h_klass (THREAD, k);
3117 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3118 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3119 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3120 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3121 return false;
3122 }
3123 if (!fd.is_static()) {
3124 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3125 return false;
3126 }
3127 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3128 return true;
3129 } else {
3130 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());
3131 return false;
3132 }
3133 }
3134
3135
3136 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3137 EXCEPTION_MARK;
3138 fieldDescriptor fd;
3139 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3140 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3141 instanceKlassHandle h_klass (THREAD, k);
3142 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3143 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3144 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3145 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3146 return false;
3147 }
3148 if (!fd.is_static() || !fd.has_initial_value()) {
3149 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3150 return false;
3151 }
3152 if (!fd.initial_value_tag().is_int()) {
3153 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3154 return false;
3155 }
3156 jint field_value = fd.int_initial_value();
3157 if (field_value == hardcoded_constant) {
3158 return true;
3159 } else {
3160 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);
3161 return false;
3162 }
3163 }
3164
3165
3166 // Check the hard-coded field offsets of all the classes in this file
3167
3168 void JavaClasses::check_offsets() {
3169 bool valid = true;
3170
3171 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3172 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3173
3174 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3175 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3176
3177 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3178 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3179
3180 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3181 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3182
3183 // java.lang.String
3184
3185 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3186 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3187 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3188 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3189
3190 // java.lang.Class
3191
3192 // Fake fields
3193 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3194 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3195 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3196
3197 // java.lang.Throwable
3198
3199 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3200 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3201 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3202 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3203
3204 // Boxed primitive objects (java_lang_boxing_object)
3205
3206 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3207 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3208 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3209 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3210 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3211 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3212 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3213 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3214
3215 // java.lang.ClassLoader
3216
3217 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3218
3219 // java.lang.System
3220
3221 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3222 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3223 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3224
3225 // java.lang.StackTraceElement
3226
3227 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3228 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3229 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3230 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3231
3232 // java.lang.ref.Reference
3233
3234 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3235 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3236 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3237 // Fake field
3238 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3239 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3240 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3241
3242 // java.lang.ref.SoftReference
3243
3244 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3245 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3246
3247 // java.lang.AssertionStatusDirectives
3248 //
3249 // The CheckAssertionStatusDirectives boolean can be removed from here and
3250 // globals.hpp after the AssertionStatusDirectives class has been integrated
3251 // into merlin "for some time." Without it, the vm will fail with early
3252 // merlin builds.
3253
3254 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3255 const char* nm = "java/lang/AssertionStatusDirectives";
3256 const char* sig = "[Ljava/lang/String;";
3257 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3258 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3259 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3260 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3261 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3262 }
3263
3264 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3265 }
3266
3267 #endif // PRODUCT
3268
3269 int InjectedField::compute_offset() {
3270 klassOop klass_oop = klass();
3271 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3272 if (!may_be_java && !fs.access_flags().is_internal()) {
3273 // Only look at injected fields
3274 continue;
3275 }
3276 if (fs.name() == name() && fs.signature() == signature()) {
3277 return fs.offset();
3278 }
3279 }
3280 ResourceMark rm;
3281 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string());
3282 fatal("Invalid layout of preloaded class");
3283 return -1;
3284 }
3285
3286 void javaClasses_init() {
3287 JavaClasses::compute_offsets();
3288 JavaClasses::check_offsets();
3289 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3290 }