Mon, 04 Jun 2012 10:22:37 -0400
7166498: JVM crash in ClassVerifier
Summary: Fixed raw pointer being used after potential safepoint/GC
Reviewed-by: acorn, fparain, dholmes
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/debugInfo.hpp"
30 #include "code/pcDesc.hpp"
31 #include "compiler/compilerOracle.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "memory/oopFactory.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "memory/universe.inline.hpp"
36 #include "oops/fieldStreams.hpp"
37 #include "oops/instanceKlass.hpp"
38 #include "oops/instanceMirrorKlass.hpp"
39 #include "oops/klass.hpp"
40 #include "oops/klassOop.hpp"
41 #include "oops/methodOop.hpp"
42 #include "oops/symbol.hpp"
43 #include "oops/typeArrayOop.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/java.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/vframe.hpp"
51 #include "utilities/preserveException.hpp"
52 #ifdef TARGET_OS_FAMILY_linux
53 # include "thread_linux.inline.hpp"
54 #endif
55 #ifdef TARGET_OS_FAMILY_solaris
56 # include "thread_solaris.inline.hpp"
57 #endif
58 #ifdef TARGET_OS_FAMILY_windows
59 # include "thread_windows.inline.hpp"
60 #endif
61 #ifdef TARGET_OS_FAMILY_bsd
62 # include "thread_bsd.inline.hpp"
63 #endif
65 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
66 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
68 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
69 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
71 InjectedField JavaClasses::_injected_fields[] = {
72 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
73 };
75 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
76 return _injected_fields[id].compute_offset();
77 }
80 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
81 *field_count = 0;
83 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
84 if (sid == vmSymbols::NO_SID) {
85 // Only well known classes can inject fields
86 return NULL;
87 }
89 int count = 0;
90 int start = -1;
92 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
93 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
94 count++; \
95 if (start == -1) start = klass##_##name##_enum; \
96 }
97 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
98 #undef LOOKUP_INJECTED_FIELD
100 if (start != -1) {
101 *field_count = count;
102 return _injected_fields + start;
103 }
104 return NULL;
105 }
108 static bool find_field(instanceKlass* ik,
109 Symbol* name_symbol, Symbol* signature_symbol,
110 fieldDescriptor* fd,
111 bool allow_super = false) {
112 if (allow_super)
113 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
114 else
115 return ik->find_local_field(name_symbol, signature_symbol, fd);
116 }
118 // Helpful routine for computing field offsets at run time rather than hardcoding them
119 static void
120 compute_offset(int &dest_offset,
121 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
122 bool allow_super = false) {
123 fieldDescriptor fd;
124 instanceKlass* ik = instanceKlass::cast(klass_oop);
125 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
126 ResourceMark rm;
127 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
128 fatal("Invalid layout of preloaded class");
129 }
130 dest_offset = fd.offset();
131 }
133 // Same as above but for "optional" offsets that might not be present in certain JDK versions
134 static void
135 compute_optional_offset(int& dest_offset,
136 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
137 bool allow_super = false) {
138 fieldDescriptor fd;
139 instanceKlass* ik = instanceKlass::cast(klass_oop);
140 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
141 dest_offset = fd.offset();
142 }
143 }
146 int java_lang_String::value_offset = 0;
147 int java_lang_String::offset_offset = 0;
148 int java_lang_String::count_offset = 0;
149 int java_lang_String::hash_offset = 0;
151 bool java_lang_String::initialized = false;
153 void java_lang_String::compute_offsets() {
154 assert(!initialized, "offsets should be initialized only once");
156 klassOop k = SystemDictionary::String_klass();
157 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
158 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
159 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
160 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
162 initialized = true;
163 }
165 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
166 assert(initialized, "Must be initialized");
167 // Create the String object first, so there's a chance that the String
168 // and the char array it points to end up in the same cache line.
169 oop obj;
170 if (tenured) {
171 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
172 } else {
173 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
174 }
176 // Create the char array. The String object must be handlized here
177 // because GC can happen as a result of the allocation attempt.
178 Handle h_obj(THREAD, obj);
179 typeArrayOop buffer;
180 if (tenured) {
181 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
182 } else {
183 buffer = oopFactory::new_charArray(length, CHECK_NH);
184 }
186 // Point the String at the char array
187 obj = h_obj();
188 set_value(obj, buffer);
189 // No need to zero the offset, allocation zero'ed the entire String object
190 assert(offset(obj) == 0, "initial String offset should be zero");
191 //set_offset(obj, 0);
192 set_count(obj, length);
194 return h_obj;
195 }
197 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
198 Handle h_obj = basic_create(length, tenured, CHECK_NH);
199 typeArrayOop buffer = value(h_obj());
200 for (int index = 0; index < length; index++) {
201 buffer->char_at_put(index, unicode[index]);
202 }
203 return h_obj;
204 }
206 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
207 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
208 }
210 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
211 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
212 }
214 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
215 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
216 return h_obj();
217 }
219 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
220 if (utf8_str == NULL) {
221 return Handle();
222 }
223 int length = UTF8::unicode_length(utf8_str);
224 Handle h_obj = basic_create(length, false, CHECK_NH);
225 if (length > 0) {
226 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
227 }
228 return h_obj;
229 }
231 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
232 Handle h_obj = create_from_str(utf8_str, CHECK_0);
233 return h_obj();
234 }
236 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
237 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
238 Handle h_obj = basic_create(length, false, CHECK_NH);
239 if (length > 0) {
240 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
241 }
242 return h_obj;
243 }
245 // Converts a C string to a Java String based on current encoding
246 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
247 assert(str != NULL, "bad arguments");
249 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
250 static to_java_string_fn_t _to_java_string_fn = NULL;
252 if (_to_java_string_fn == NULL) {
253 void *lib_handle = os::native_java_library();
254 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
255 if (_to_java_string_fn == NULL) {
256 fatal("NewStringPlatform missing");
257 }
258 }
260 jstring js = NULL;
261 { JavaThread* thread = (JavaThread*)THREAD;
262 assert(thread->is_Java_thread(), "must be java thread");
263 HandleMark hm(thread);
264 ThreadToNativeFromVM ttn(thread);
265 js = (_to_java_string_fn)(thread->jni_environment(), str);
266 }
267 return Handle(THREAD, JNIHandles::resolve(js));
268 }
270 // Converts a Java String to a native C string that can be used for
271 // native OS calls.
272 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
274 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
275 static to_platform_string_fn_t _to_platform_string_fn = NULL;
277 if (_to_platform_string_fn == NULL) {
278 void *lib_handle = os::native_java_library();
279 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
280 if (_to_platform_string_fn == NULL) {
281 fatal("GetStringPlatformChars missing");
282 }
283 }
285 char *native_platform_string;
286 { JavaThread* thread = (JavaThread*)THREAD;
287 assert(thread->is_Java_thread(), "must be java thread");
288 JNIEnv *env = thread->jni_environment();
289 jstring js = (jstring) JNIHandles::make_local(env, java_string());
290 bool is_copy;
291 HandleMark hm(thread);
292 ThreadToNativeFromVM ttn(thread);
293 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
294 assert(is_copy == JNI_TRUE, "is_copy value changed");
295 JNIHandles::destroy_local(js);
296 }
297 return native_platform_string;
298 }
300 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
301 oop obj = java_string();
302 // Typical usage is to convert all '/' to '.' in string.
303 typeArrayOop value = java_lang_String::value(obj);
304 int offset = java_lang_String::offset(obj);
305 int length = java_lang_String::length(obj);
307 // First check if any from_char exist
308 int index; // Declared outside, used later
309 for (index = 0; index < length; index++) {
310 if (value->char_at(index + offset) == from_char) {
311 break;
312 }
313 }
314 if (index == length) {
315 // No from_char, so do not copy.
316 return java_string;
317 }
319 // Create new UNICODE buffer. Must handlize value because GC
320 // may happen during String and char array creation.
321 typeArrayHandle h_value(THREAD, value);
322 Handle string = basic_create(length, false, CHECK_NH);
324 typeArrayOop from_buffer = h_value();
325 typeArrayOop to_buffer = java_lang_String::value(string());
327 // Copy contents
328 for (index = 0; index < length; index++) {
329 jchar c = from_buffer->char_at(index + offset);
330 if (c == from_char) {
331 c = to_char;
332 }
333 to_buffer->char_at_put(index, c);
334 }
335 return string;
336 }
338 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
339 typeArrayOop value = java_lang_String::value(java_string);
340 int offset = java_lang_String::offset(java_string);
341 length = java_lang_String::length(java_string);
343 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
344 for (int index = 0; index < length; index++) {
345 result[index] = value->char_at(index + offset);
346 }
347 return result;
348 }
350 unsigned int java_lang_String::hash_string(oop java_string) {
351 typeArrayOop value = java_lang_String::value(java_string);
352 int offset = java_lang_String::offset(java_string);
353 int length = java_lang_String::length(java_string);
355 if (length == 0) return 0;
356 return hash_string(value->char_at_addr(offset), length);
357 }
359 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
360 oop obj = java_string();
361 typeArrayOop value = java_lang_String::value(obj);
362 int offset = java_lang_String::offset(obj);
363 int length = java_lang_String::length(obj);
364 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
365 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
366 return sym;
367 }
369 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
370 typeArrayOop value = java_lang_String::value(java_string);
371 int offset = java_lang_String::offset(java_string);
372 int length = java_lang_String::length(java_string);
373 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
374 return SymbolTable::probe_unicode(base, length);
375 }
378 int java_lang_String::utf8_length(oop java_string) {
379 typeArrayOop value = java_lang_String::value(java_string);
380 int offset = java_lang_String::offset(java_string);
381 int length = java_lang_String::length(java_string);
382 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
383 return UNICODE::utf8_length(position, length);
384 }
386 char* java_lang_String::as_utf8_string(oop java_string) {
387 typeArrayOop value = java_lang_String::value(java_string);
388 int offset = java_lang_String::offset(java_string);
389 int length = java_lang_String::length(java_string);
390 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
391 return UNICODE::as_utf8(position, length);
392 }
394 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
395 typeArrayOop value = java_lang_String::value(java_string);
396 int offset = java_lang_String::offset(java_string);
397 int length = java_lang_String::length(java_string);
398 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
399 return UNICODE::as_utf8(position, length, buf, buflen);
400 }
402 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
403 typeArrayOop value = java_lang_String::value(java_string);
404 int offset = java_lang_String::offset(java_string);
405 int length = java_lang_String::length(java_string);
406 assert(start + len <= length, "just checking");
407 jchar* position = value->char_at_addr(offset + start);
408 return UNICODE::as_utf8(position, len);
409 }
411 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
412 assert(SharedSkipVerify ||
413 java_string->klass() == SystemDictionary::String_klass(),
414 "must be java_string");
415 typeArrayOop value = java_lang_String::value(java_string);
416 int offset = java_lang_String::offset(java_string);
417 int length = java_lang_String::length(java_string);
418 if (length != len) {
419 return false;
420 }
421 for (int i = 0; i < len; i++) {
422 if (value->char_at(i + offset) != chars[i]) {
423 return false;
424 }
425 }
426 return true;
427 }
429 void java_lang_String::print(Handle java_string, outputStream* st) {
430 oop obj = java_string();
431 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
432 typeArrayOop value = java_lang_String::value(obj);
433 int offset = java_lang_String::offset(obj);
434 int length = java_lang_String::length(obj);
436 int end = MIN2(length, 100);
437 if (value == NULL) {
438 // This can happen if, e.g., printing a String
439 // object before its initializer has been called
440 st->print_cr("NULL");
441 } else {
442 st->print("\"");
443 for (int index = 0; index < length; index++) {
444 st->print("%c", value->char_at(index + offset));
445 }
446 st->print("\"");
447 }
448 }
450 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
451 Handle mirror (THREAD, fd->field_holder()->java_mirror());
452 assert(mirror.not_null() && fd->is_static(), "just checking");
453 if (fd->has_initial_value()) {
454 BasicType t = fd->field_type();
455 switch (t) {
456 case T_BYTE:
457 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
458 break;
459 case T_BOOLEAN:
460 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
461 break;
462 case T_CHAR:
463 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
464 break;
465 case T_SHORT:
466 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
467 break;
468 case T_INT:
469 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
470 break;
471 case T_FLOAT:
472 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
473 break;
474 case T_DOUBLE:
475 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
476 break;
477 case T_LONG:
478 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
479 break;
480 case T_OBJECT:
481 {
482 #ifdef ASSERT
483 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
484 assert(fd->signature() == sym, "just checking");
485 #endif
486 oop string = fd->string_initial_value(CHECK);
487 mirror()->obj_field_put(fd->offset(), string);
488 }
489 break;
490 default:
491 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
492 "Illegal ConstantValue attribute in class file");
493 }
494 }
495 }
498 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
499 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
501 if (k->oop_is_instance()) {
502 // During bootstrap, java.lang.Class wasn't loaded so static field
503 // offsets were computed without the size added it. Go back and
504 // update all the static field offsets to included the size.
505 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
506 if (fs.access_flags().is_static()) {
507 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
508 fs.set_offset(real_offset);
509 }
510 }
511 }
512 create_mirror(k, CHECK);
513 }
515 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
516 assert(k->java_mirror() == NULL, "should only assign mirror once");
517 // Use this moment of initialization to cache modifier_flags also,
518 // to support Class.getModifiers(). Instance classes recalculate
519 // the cached flags after the class file is parsed, but before the
520 // class is put into the system dictionary.
521 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
522 k->set_modifier_flags(computed_modifiers);
523 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
524 // Allocate mirror (java.lang.Class instance)
525 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
527 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
528 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
530 // It might also have a component mirror. This mirror must already exist.
531 if (k->oop_is_javaArray()) {
532 Handle comp_mirror;
533 if (k->oop_is_typeArray()) {
534 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
535 comp_mirror = Universe::java_mirror(type);
536 assert(comp_mirror.not_null(), "must have primitive mirror");
537 } else if (k->oop_is_objArray()) {
538 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
539 if (element_klass != NULL
540 && (Klass::cast(element_klass)->oop_is_instance() ||
541 Klass::cast(element_klass)->oop_is_javaArray())) {
542 comp_mirror = Klass::cast(element_klass)->java_mirror();
543 assert(comp_mirror.not_null(), "must have element mirror");
544 }
545 // else some object array internal to the VM, like systemObjArrayKlassObj
546 }
547 if (comp_mirror.not_null()) {
548 // Two-way link between the array klass and its component mirror:
549 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
550 set_array_klass(comp_mirror(), k->as_klassOop());
551 }
552 } else if (k->oop_is_instance()) {
553 // Initialize static fields
554 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
555 }
556 return mirror();
557 } else {
558 return NULL;
559 }
560 }
564 int java_lang_Class::oop_size(oop java_class) {
565 assert(_oop_size_offset != 0, "must be set");
566 return java_class->int_field(_oop_size_offset);
567 }
568 void java_lang_Class::set_oop_size(oop java_class, int size) {
569 assert(_oop_size_offset != 0, "must be set");
570 java_class->int_field_put(_oop_size_offset, size);
571 }
572 int java_lang_Class::static_oop_field_count(oop java_class) {
573 assert(_static_oop_field_count_offset != 0, "must be set");
574 return java_class->int_field(_static_oop_field_count_offset);
575 }
576 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
577 assert(_static_oop_field_count_offset != 0, "must be set");
578 java_class->int_field_put(_static_oop_field_count_offset, size);
579 }
581 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
582 // This should be improved by adding a field at the Java level or by
583 // introducing a new VM klass (see comment in ClassFileParser)
584 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
585 if (type != T_VOID) {
586 klassOop aklass = Universe::typeArrayKlassObj(type);
587 assert(aklass != NULL, "correct bootstrap");
588 set_array_klass(java_class, aklass);
589 }
590 #ifdef ASSERT
591 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
592 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
593 #endif
594 return java_class;
595 }
598 klassOop java_lang_Class::as_klassOop(oop java_class) {
599 //%note memory_2
600 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
601 klassOop k = klassOop(java_class->obj_field(_klass_offset));
602 assert(k == NULL || k->is_klass(), "type check");
603 return k;
604 }
607 void java_lang_Class::set_klass(oop java_class, klassOop klass) {
608 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
609 java_class->obj_field_put(_klass_offset, klass);
610 }
613 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
614 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
615 Symbol* name = NULL;
616 bool is_instance = false;
617 if (is_primitive(java_class)) {
618 name = vmSymbols::type_signature(primitive_type(java_class));
619 } else {
620 klassOop k = as_klassOop(java_class);
621 is_instance = Klass::cast(k)->oop_is_instance();
622 name = Klass::cast(k)->name();
623 }
624 if (name == NULL) {
625 st->print("<null>");
626 return;
627 }
628 if (is_instance) st->print("L");
629 st->write((char*) name->base(), (int) name->utf8_length());
630 if (is_instance) st->print(";");
631 }
633 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
634 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
635 Symbol* name;
636 if (is_primitive(java_class)) {
637 name = vmSymbols::type_signature(primitive_type(java_class));
638 // Because this can create a new symbol, the caller has to decrement
639 // the refcount, so make adjustment here and below for symbols returned
640 // that are not created or incremented due to a successful lookup.
641 name->increment_refcount();
642 } else {
643 klassOop k = as_klassOop(java_class);
644 if (!Klass::cast(k)->oop_is_instance()) {
645 name = Klass::cast(k)->name();
646 name->increment_refcount();
647 } else {
648 ResourceMark rm;
649 const char* sigstr = Klass::cast(k)->signature_name();
650 int siglen = (int) strlen(sigstr);
651 if (!intern_if_not_found) {
652 name = SymbolTable::probe(sigstr, siglen);
653 } else {
654 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
655 }
656 }
657 }
658 return name;
659 }
662 klassOop java_lang_Class::array_klass(oop java_class) {
663 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
664 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
665 return k;
666 }
669 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
670 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
671 java_class->obj_field_put(_array_klass_offset, klass);
672 }
675 methodOop java_lang_Class::resolved_constructor(oop java_class) {
676 oop constructor = java_class->obj_field(_resolved_constructor_offset);
677 assert(constructor == NULL || constructor->is_method(), "should be method");
678 return methodOop(constructor);
679 }
682 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
683 assert(constructor->is_method(), "should be method");
684 java_class->obj_field_put(_resolved_constructor_offset, constructor);
685 }
688 bool java_lang_Class::is_primitive(oop java_class) {
689 // should assert:
690 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
691 klassOop k = klassOop(java_class->obj_field(_klass_offset));
692 return k == NULL;
693 }
696 BasicType java_lang_Class::primitive_type(oop java_class) {
697 assert(java_lang_Class::is_primitive(java_class), "just checking");
698 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
699 BasicType type = T_VOID;
700 if (ak != NULL) {
701 // Note: create_basic_type_mirror above initializes ak to a non-null value.
702 type = arrayKlass::cast(ak)->element_type();
703 } else {
704 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
705 }
706 assert(Universe::java_mirror(type) == java_class, "must be consistent");
707 return type;
708 }
710 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
711 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
712 if (is_primitive(java_class)) {
713 if (reference_klass != NULL)
714 (*reference_klass) = NULL;
715 return primitive_type(java_class);
716 } else {
717 if (reference_klass != NULL)
718 (*reference_klass) = as_klassOop(java_class);
719 return T_OBJECT;
720 }
721 }
724 oop java_lang_Class::primitive_mirror(BasicType t) {
725 oop mirror = Universe::java_mirror(t);
726 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
727 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
728 return mirror;
729 }
731 bool java_lang_Class::offsets_computed = false;
732 int java_lang_Class::classRedefinedCount_offset = -1;
734 void java_lang_Class::compute_offsets() {
735 assert(!offsets_computed, "offsets should be initialized only once");
736 offsets_computed = true;
738 klassOop klass_oop = SystemDictionary::Class_klass();
739 // The classRedefinedCount field is only present starting in 1.5,
740 // so don't go fatal.
741 compute_optional_offset(classRedefinedCount_offset,
742 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
744 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
745 }
747 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
748 if (!JDK_Version::is_gte_jdk15x_version()
749 || classRedefinedCount_offset == -1) {
750 // The classRedefinedCount field is only present starting in 1.5.
751 // If we don't have an offset for it then just return -1 as a marker.
752 return -1;
753 }
755 return the_class_mirror->int_field(classRedefinedCount_offset);
756 }
758 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
759 if (!JDK_Version::is_gte_jdk15x_version()
760 || classRedefinedCount_offset == -1) {
761 // The classRedefinedCount field is only present starting in 1.5.
762 // If we don't have an offset for it then nothing to set.
763 return;
764 }
766 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
767 }
770 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
771 // platform thread structure, and a eetop offset which was used for thread
772 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
773 // merged, so in the HotSpot VM we just use the eetop field for the thread
774 // instead of the privateInfo_offset.
775 //
776 // Note: The stackSize field is only present starting in 1.4.
778 int java_lang_Thread::_name_offset = 0;
779 int java_lang_Thread::_group_offset = 0;
780 int java_lang_Thread::_contextClassLoader_offset = 0;
781 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
782 int java_lang_Thread::_priority_offset = 0;
783 int java_lang_Thread::_eetop_offset = 0;
784 int java_lang_Thread::_daemon_offset = 0;
785 int java_lang_Thread::_stillborn_offset = 0;
786 int java_lang_Thread::_stackSize_offset = 0;
787 int java_lang_Thread::_tid_offset = 0;
788 int java_lang_Thread::_thread_status_offset = 0;
789 int java_lang_Thread::_park_blocker_offset = 0;
790 int java_lang_Thread::_park_event_offset = 0 ;
793 void java_lang_Thread::compute_offsets() {
794 assert(_group_offset == 0, "offsets should be initialized only once");
796 klassOop k = SystemDictionary::Thread_klass();
797 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
798 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
799 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
800 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
801 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
802 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
803 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
804 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
805 // The stackSize field is only present starting in 1.4, so don't go fatal.
806 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
807 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
808 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
809 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
810 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
811 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
812 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
813 vmSymbols::long_signature());
814 }
817 JavaThread* java_lang_Thread::thread(oop java_thread) {
818 return (JavaThread*)java_thread->address_field(_eetop_offset);
819 }
822 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
823 java_thread->address_field_put(_eetop_offset, (address)thread);
824 }
827 typeArrayOop java_lang_Thread::name(oop java_thread) {
828 oop name = java_thread->obj_field(_name_offset);
829 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
830 return typeArrayOop(name);
831 }
834 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
835 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
836 java_thread->obj_field_put(_name_offset, name);
837 }
840 ThreadPriority java_lang_Thread::priority(oop java_thread) {
841 return (ThreadPriority)java_thread->int_field(_priority_offset);
842 }
845 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
846 java_thread->int_field_put(_priority_offset, priority);
847 }
850 oop java_lang_Thread::threadGroup(oop java_thread) {
851 return java_thread->obj_field(_group_offset);
852 }
855 bool java_lang_Thread::is_stillborn(oop java_thread) {
856 return java_thread->bool_field(_stillborn_offset) != 0;
857 }
860 // We never have reason to turn the stillborn bit off
861 void java_lang_Thread::set_stillborn(oop java_thread) {
862 java_thread->bool_field_put(_stillborn_offset, true);
863 }
866 bool java_lang_Thread::is_alive(oop java_thread) {
867 JavaThread* thr = java_lang_Thread::thread(java_thread);
868 return (thr != NULL);
869 }
872 bool java_lang_Thread::is_daemon(oop java_thread) {
873 return java_thread->bool_field(_daemon_offset) != 0;
874 }
877 void java_lang_Thread::set_daemon(oop java_thread) {
878 java_thread->bool_field_put(_daemon_offset, true);
879 }
881 oop java_lang_Thread::context_class_loader(oop java_thread) {
882 return java_thread->obj_field(_contextClassLoader_offset);
883 }
885 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
886 return java_thread->obj_field(_inheritedAccessControlContext_offset);
887 }
890 jlong java_lang_Thread::stackSize(oop java_thread) {
891 // The stackSize field is only present starting in 1.4
892 if (_stackSize_offset > 0) {
893 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
894 return java_thread->long_field(_stackSize_offset);
895 } else {
896 return 0;
897 }
898 }
900 // Write the thread status value to threadStatus field in java.lang.Thread java class.
901 void java_lang_Thread::set_thread_status(oop java_thread,
902 java_lang_Thread::ThreadStatus status) {
903 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
904 // The threadStatus is only present starting in 1.5
905 if (_thread_status_offset > 0) {
906 java_thread->int_field_put(_thread_status_offset, status);
907 }
908 }
910 // Read thread status value from threadStatus field in java.lang.Thread java class.
911 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
912 assert(Thread::current()->is_VM_thread() ||
913 JavaThread::current()->thread_state() == _thread_in_vm,
914 "Java Thread is not running in vm");
915 // The threadStatus is only present starting in 1.5
916 if (_thread_status_offset > 0) {
917 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
918 } else {
919 // All we can easily figure out is if it is alive, but that is
920 // enough info for a valid unknown status.
921 // These aren't restricted to valid set ThreadStatus values, so
922 // use JVMTI values and cast.
923 JavaThread* thr = java_lang_Thread::thread(java_thread);
924 if (thr == NULL) {
925 // the thread hasn't run yet or is in the process of exiting
926 return NEW;
927 }
928 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
929 }
930 }
933 jlong java_lang_Thread::thread_id(oop java_thread) {
934 // The thread ID field is only present starting in 1.5
935 if (_tid_offset > 0) {
936 return java_thread->long_field(_tid_offset);
937 } else {
938 return 0;
939 }
940 }
942 oop java_lang_Thread::park_blocker(oop java_thread) {
943 assert(JDK_Version::current().supports_thread_park_blocker() &&
944 _park_blocker_offset != 0, "Must support parkBlocker field");
946 if (_park_blocker_offset > 0) {
947 return java_thread->obj_field(_park_blocker_offset);
948 }
950 return NULL;
951 }
953 jlong java_lang_Thread::park_event(oop java_thread) {
954 if (_park_event_offset > 0) {
955 return java_thread->long_field(_park_event_offset);
956 }
957 return 0;
958 }
960 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
961 if (_park_event_offset > 0) {
962 java_thread->long_field_put(_park_event_offset, ptr);
963 return true;
964 }
965 return false;
966 }
969 const char* java_lang_Thread::thread_status_name(oop java_thread) {
970 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
971 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
972 switch (status) {
973 case NEW : return "NEW";
974 case RUNNABLE : return "RUNNABLE";
975 case SLEEPING : return "TIMED_WAITING (sleeping)";
976 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
977 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
978 case PARKED : return "WAITING (parking)";
979 case PARKED_TIMED : return "TIMED_WAITING (parking)";
980 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
981 case TERMINATED : return "TERMINATED";
982 default : return "UNKNOWN";
983 };
984 }
985 int java_lang_ThreadGroup::_parent_offset = 0;
986 int java_lang_ThreadGroup::_name_offset = 0;
987 int java_lang_ThreadGroup::_threads_offset = 0;
988 int java_lang_ThreadGroup::_groups_offset = 0;
989 int java_lang_ThreadGroup::_maxPriority_offset = 0;
990 int java_lang_ThreadGroup::_destroyed_offset = 0;
991 int java_lang_ThreadGroup::_daemon_offset = 0;
992 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
993 int java_lang_ThreadGroup::_nthreads_offset = 0;
994 int java_lang_ThreadGroup::_ngroups_offset = 0;
996 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
997 assert(java_thread_group->is_oop(), "thread group must be oop");
998 return java_thread_group->obj_field(_parent_offset);
999 }
1001 // ("name as oop" accessor is not necessary)
1003 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1004 oop name = java_thread_group->obj_field(_name_offset);
1005 // ThreadGroup.name can be null
1006 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1007 }
1009 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1010 assert(java_thread_group->is_oop(), "thread group must be oop");
1011 return java_thread_group->int_field(_nthreads_offset);
1012 }
1014 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1015 oop threads = java_thread_group->obj_field(_threads_offset);
1016 assert(threads != NULL, "threadgroups should have threads");
1017 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1018 return objArrayOop(threads);
1019 }
1021 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1022 assert(java_thread_group->is_oop(), "thread group must be oop");
1023 return java_thread_group->int_field(_ngroups_offset);
1024 }
1026 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1027 oop groups = java_thread_group->obj_field(_groups_offset);
1028 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1029 return objArrayOop(groups);
1030 }
1032 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1033 assert(java_thread_group->is_oop(), "thread group must be oop");
1034 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1035 }
1037 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1038 assert(java_thread_group->is_oop(), "thread group must be oop");
1039 return java_thread_group->bool_field(_destroyed_offset) != 0;
1040 }
1042 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1043 assert(java_thread_group->is_oop(), "thread group must be oop");
1044 return java_thread_group->bool_field(_daemon_offset) != 0;
1045 }
1047 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1048 assert(java_thread_group->is_oop(), "thread group must be oop");
1049 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1050 }
1052 void java_lang_ThreadGroup::compute_offsets() {
1053 assert(_parent_offset == 0, "offsets should be initialized only once");
1055 klassOop k = SystemDictionary::ThreadGroup_klass();
1057 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1058 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1059 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1060 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1061 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1062 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1063 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1064 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1065 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1066 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1067 }
1069 oop java_lang_Throwable::unassigned_stacktrace() {
1070 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1071 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1072 if (UseCompressedOops) {
1073 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1074 } else {
1075 return oopDesc::load_decode_heap_oop((oop*)addr);
1076 }
1077 }
1079 oop java_lang_Throwable::backtrace(oop throwable) {
1080 return throwable->obj_field_acquire(backtrace_offset);
1081 }
1084 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1085 throwable->release_obj_field_put(backtrace_offset, value);
1086 }
1089 oop java_lang_Throwable::message(oop throwable) {
1090 return throwable->obj_field(detailMessage_offset);
1091 }
1094 oop java_lang_Throwable::message(Handle throwable) {
1095 return throwable->obj_field(detailMessage_offset);
1096 }
1099 void java_lang_Throwable::set_message(oop throwable, oop value) {
1100 throwable->obj_field_put(detailMessage_offset, value);
1101 }
1104 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1105 throwable->obj_field_put(stackTrace_offset, st_element_array);
1106 }
1108 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1109 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1110 set_stacktrace(throwable, NULL);
1111 }
1114 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1115 ResourceMark rm;
1116 klassOop k = throwable->klass();
1117 assert(k != NULL, "just checking");
1118 st->print("%s", instanceKlass::cast(k)->external_name());
1119 oop msg = message(throwable);
1120 if (msg != NULL) {
1121 st->print(": %s", java_lang_String::as_utf8_string(msg));
1122 }
1123 }
1126 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1127 ResourceMark rm;
1128 klassOop k = throwable->klass();
1129 assert(k != NULL, "just checking");
1130 st->print("%s", instanceKlass::cast(k)->external_name());
1131 oop msg = message(throwable);
1132 if (msg != NULL) {
1133 st->print(": %s", java_lang_String::as_utf8_string(msg));
1134 }
1135 }
1137 // Print stack trace element to resource allocated buffer
1138 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1139 // Get strings and string lengths
1140 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1141 const char* klass_name = klass->external_name();
1142 int buf_len = (int)strlen(klass_name);
1143 char* source_file_name;
1144 if (klass->source_file_name() == NULL) {
1145 source_file_name = NULL;
1146 } else {
1147 source_file_name = klass->source_file_name()->as_C_string();
1148 buf_len += (int)strlen(source_file_name);
1149 }
1150 char* method_name = method->name()->as_C_string();
1151 buf_len += (int)strlen(method_name);
1153 // Allocate temporary buffer with extra space for formatting and line number
1154 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1156 // Print stack trace line in buffer
1157 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1158 if (method->is_native()) {
1159 strcat(buf, "(Native Method)");
1160 } else {
1161 int line_number = method->line_number_from_bci(bci);
1162 if (source_file_name != NULL && (line_number != -1)) {
1163 // Sourcename and linenumber
1164 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1165 } else if (source_file_name != NULL) {
1166 // Just sourcename
1167 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1168 } else {
1169 // Neither soucename and linenumber
1170 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1171 }
1172 nmethod* nm = method->code();
1173 if (WizardMode && nm != NULL) {
1174 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1175 }
1176 }
1178 return buf;
1179 }
1182 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1183 ResourceMark rm;
1184 char* buf = print_stack_element_to_buffer(method, bci);
1185 print_to_stream(stream, buf);
1186 }
1188 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1189 ResourceMark rm;
1190 char* buf = print_stack_element_to_buffer(method, bci);
1191 st->print_cr("%s", buf);
1192 }
1194 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1195 if (stream.is_null()) {
1196 tty->print_cr("%s", str);
1197 } else {
1198 EXCEPTION_MARK;
1199 JavaValue result(T_VOID);
1200 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1201 if (!HAS_PENDING_EXCEPTION) {
1202 JavaCalls::call_virtual(&result,
1203 stream,
1204 KlassHandle(THREAD, stream->klass()),
1205 vmSymbols::println_name(),
1206 vmSymbols::char_array_void_signature(),
1207 arg,
1208 THREAD);
1209 }
1210 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1211 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1212 }
1214 }
1217 const char* java_lang_Throwable::no_stack_trace_message() {
1218 return "\t<<no stack trace available>>";
1219 }
1222 // Currently used only for exceptions occurring during startup
1223 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1224 Thread *THREAD = Thread::current();
1225 Handle h_throwable(THREAD, throwable);
1226 while (h_throwable.not_null()) {
1227 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1228 if (result.is_null()) {
1229 st->print_cr(no_stack_trace_message());
1230 return;
1231 }
1233 while (result.not_null()) {
1234 objArrayHandle methods (THREAD,
1235 objArrayOop(result->obj_at(trace_methods_offset)));
1236 typeArrayHandle bcis (THREAD,
1237 typeArrayOop(result->obj_at(trace_bcis_offset)));
1239 if (methods.is_null() || bcis.is_null()) {
1240 st->print_cr(no_stack_trace_message());
1241 return;
1242 }
1244 int length = methods()->length();
1245 for (int index = 0; index < length; index++) {
1246 methodOop method = methodOop(methods()->obj_at(index));
1247 if (method == NULL) goto handle_cause;
1248 int bci = bcis->ushort_at(index);
1249 print_stack_element(st, method, bci);
1250 }
1251 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1252 }
1253 handle_cause:
1254 {
1255 EXCEPTION_MARK;
1256 JavaValue result(T_OBJECT);
1257 JavaCalls::call_virtual(&result,
1258 h_throwable,
1259 KlassHandle(THREAD, h_throwable->klass()),
1260 vmSymbols::getCause_name(),
1261 vmSymbols::void_throwable_signature(),
1262 THREAD);
1263 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1264 if (HAS_PENDING_EXCEPTION) {
1265 CLEAR_PENDING_EXCEPTION;
1266 h_throwable = Handle();
1267 } else {
1268 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1269 if (h_throwable.not_null()) {
1270 st->print("Caused by: ");
1271 print(h_throwable, st);
1272 st->cr();
1273 }
1274 }
1275 }
1276 }
1277 }
1280 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1281 // Note: this is no longer used in Merlin, but we support it for compatibility.
1282 Thread *thread = Thread::current();
1283 Handle stream(thread, print_stream);
1284 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1285 if (result.is_null()) {
1286 print_to_stream(stream, no_stack_trace_message());
1287 return;
1288 }
1290 while (result.not_null()) {
1291 objArrayHandle methods (thread,
1292 objArrayOop(result->obj_at(trace_methods_offset)));
1293 typeArrayHandle bcis (thread,
1294 typeArrayOop(result->obj_at(trace_bcis_offset)));
1296 if (methods.is_null() || bcis.is_null()) {
1297 print_to_stream(stream, no_stack_trace_message());
1298 return;
1299 }
1301 int length = methods()->length();
1302 for (int index = 0; index < length; index++) {
1303 methodOop method = methodOop(methods()->obj_at(index));
1304 if (method == NULL) return;
1305 int bci = bcis->ushort_at(index);
1306 print_stack_element(stream, method, bci);
1307 }
1308 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1309 }
1310 }
1312 // This class provides a simple wrapper over the internal structure of
1313 // exception backtrace to insulate users of the backtrace from needing
1314 // to know what it looks like.
1315 class BacktraceBuilder: public StackObj {
1316 private:
1317 Handle _backtrace;
1318 objArrayOop _head;
1319 objArrayOop _methods;
1320 typeArrayOop _bcis;
1321 int _index;
1322 No_Safepoint_Verifier _nsv;
1324 public:
1326 enum {
1327 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1328 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1329 trace_next_offset = java_lang_Throwable::trace_next_offset,
1330 trace_size = java_lang_Throwable::trace_size,
1331 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1332 };
1334 // constructor for new backtrace
1335 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1336 expand(CHECK);
1337 _backtrace = _head;
1338 _index = 0;
1339 }
1341 void expand(TRAPS) {
1342 objArrayHandle old_head(THREAD, _head);
1343 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1345 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1346 objArrayHandle new_head(THREAD, head);
1348 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1349 objArrayHandle new_methods(THREAD, methods);
1351 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1352 typeArrayHandle new_bcis(THREAD, bcis);
1354 if (!old_head.is_null()) {
1355 old_head->obj_at_put(trace_next_offset, new_head());
1356 }
1357 new_head->obj_at_put(trace_methods_offset, new_methods());
1358 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1360 _head = new_head();
1361 _methods = new_methods();
1362 _bcis = new_bcis();
1363 _index = 0;
1364 }
1366 oop backtrace() {
1367 return _backtrace();
1368 }
1370 inline void push(methodOop method, int bci, TRAPS) {
1371 // Smear the -1 bci to 0 since the array only holds unsigned
1372 // shorts. The later line number lookup would just smear the -1
1373 // to a 0 even if it could be recorded.
1374 if (bci == SynchronizationEntryBCI) bci = 0;
1375 assert(bci == (jushort)bci, "doesn't fit");
1377 if (_index >= trace_chunk_size) {
1378 methodHandle mhandle(THREAD, method);
1379 expand(CHECK);
1380 method = mhandle();
1381 }
1383 _methods->obj_at_put(_index, method);
1384 _bcis->ushort_at_put(_index, bci);
1385 _index++;
1386 }
1388 methodOop current_method() {
1389 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1390 return methodOop(_methods->obj_at(_index));
1391 }
1393 jushort current_bci() {
1394 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1395 return _bcis->ushort_at(_index);
1396 }
1397 };
1400 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1401 if (!StackTraceInThrowable) return;
1402 ResourceMark rm(THREAD);
1404 // Start out by clearing the backtrace for this object, in case the VM
1405 // runs out of memory while allocating the stack trace
1406 set_backtrace(throwable(), NULL);
1407 if (JDK_Version::is_gte_jdk14x_version()) {
1408 // New since 1.4, clear lazily constructed Java level stacktrace if
1409 // refilling occurs
1410 // This is unnecessary in 1.7+ but harmless
1411 clear_stacktrace(throwable());
1412 }
1414 int max_depth = MaxJavaStackTraceDepth;
1415 JavaThread* thread = (JavaThread*)THREAD;
1416 BacktraceBuilder bt(CHECK);
1418 // If there is no Java frame just return the method that was being called
1419 // with bci 0
1420 if (!thread->has_last_Java_frame()) {
1421 if (max_depth >= 1 && method() != NULL) {
1422 bt.push(method(), 0, CHECK);
1423 set_backtrace(throwable(), bt.backtrace());
1424 }
1425 return;
1426 }
1428 // Instead of using vframe directly, this version of fill_in_stack_trace
1429 // basically handles everything by hand. This significantly improved the
1430 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1431 // See bug 6333838 for more details.
1432 // The "ASSERT" here is to verify this method generates the exactly same stack
1433 // trace as utilizing vframe.
1434 #ifdef ASSERT
1435 vframeStream st(thread);
1436 methodHandle st_method(THREAD, st.method());
1437 #endif
1438 int total_count = 0;
1439 RegisterMap map(thread, false);
1440 int decode_offset = 0;
1441 nmethod* nm = NULL;
1442 bool skip_fillInStackTrace_check = false;
1443 bool skip_throwableInit_check = false;
1445 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1446 methodOop method = NULL;
1447 int bci = 0;
1449 // Compiled java method case.
1450 if (decode_offset != 0) {
1451 DebugInfoReadStream stream(nm, decode_offset);
1452 decode_offset = stream.read_int();
1453 method = (methodOop)nm->oop_at(stream.read_int());
1454 bci = stream.read_bci();
1455 } else {
1456 if (fr.is_first_frame()) break;
1457 address pc = fr.pc();
1458 if (fr.is_interpreted_frame()) {
1459 intptr_t bcx = fr.interpreter_frame_bcx();
1460 method = fr.interpreter_frame_method();
1461 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1462 fr = fr.sender(&map);
1463 } else {
1464 CodeBlob* cb = fr.cb();
1465 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1466 // but non nmethod
1467 fr = fr.sender(&map);
1468 if (cb == NULL || !cb->is_nmethod()) {
1469 continue;
1470 }
1471 nm = (nmethod*)cb;
1472 if (nm->method()->is_native()) {
1473 method = nm->method();
1474 bci = 0;
1475 } else {
1476 PcDesc* pd = nm->pc_desc_at(pc);
1477 decode_offset = pd->scope_decode_offset();
1478 // if decode_offset is not equal to 0, it will execute the
1479 // "compiled java method case" at the beginning of the loop.
1480 continue;
1481 }
1482 }
1483 }
1484 #ifdef ASSERT
1485 assert(st_method() == method && st.bci() == bci,
1486 "Wrong stack trace");
1487 st.next();
1488 // vframeStream::method isn't GC-safe so store off a copy
1489 // of the methodOop in case we GC.
1490 if (!st.at_end()) {
1491 st_method = st.method();
1492 }
1493 #endif
1495 // the format of the stacktrace will be:
1496 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1497 // - 0 or more <init> methods for the exception class (skipped)
1498 // - rest of the stack
1500 if (!skip_fillInStackTrace_check) {
1501 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1502 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1503 throwable->is_a(method->method_holder())) {
1504 continue;
1505 }
1506 else {
1507 skip_fillInStackTrace_check = true; // gone past them all
1508 }
1509 }
1510 if (!skip_throwableInit_check) {
1511 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1513 // skip <init> methods of the exception class and superclasses
1514 // This is simlar to classic VM.
1515 if (method->name() == vmSymbols::object_initializer_name() &&
1516 throwable->is_a(method->method_holder())) {
1517 continue;
1518 } else {
1519 // there are none or we've seen them all - either way stop checking
1520 skip_throwableInit_check = true;
1521 }
1522 }
1523 bt.push(method, bci, CHECK);
1524 total_count++;
1525 }
1527 // Put completed stack trace into throwable object
1528 set_backtrace(throwable(), bt.backtrace());
1529 }
1531 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1532 // No-op if stack trace is disabled
1533 if (!StackTraceInThrowable) {
1534 return;
1535 }
1537 // Disable stack traces for some preallocated out of memory errors
1538 if (!Universe::should_fill_in_stack_trace(throwable)) {
1539 return;
1540 }
1542 PRESERVE_EXCEPTION_MARK;
1544 JavaThread* thread = JavaThread::active();
1545 fill_in_stack_trace(throwable, method, thread);
1546 // ignore exceptions thrown during stack trace filling
1547 CLEAR_PENDING_EXCEPTION;
1548 }
1550 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1551 // Allocate stack trace - backtrace is created but not filled in
1553 // No-op if stack trace is disabled
1554 if (!StackTraceInThrowable) return;
1556 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1557 objArrayHandle backtrace (THREAD, h_oop);
1558 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1559 objArrayHandle methods (THREAD, m_oop);
1560 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1561 typeArrayHandle bcis(THREAD, b);
1563 // backtrace has space for one chunk (next is NULL)
1564 backtrace->obj_at_put(trace_methods_offset, methods());
1565 backtrace->obj_at_put(trace_bcis_offset, bcis());
1566 set_backtrace(throwable(), backtrace());
1567 }
1570 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1571 // Fill in stack trace into preallocated backtrace (no GC)
1573 // No-op if stack trace is disabled
1574 if (!StackTraceInThrowable) return;
1576 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1578 oop backtrace = java_lang_Throwable::backtrace(throwable());
1579 assert(backtrace != NULL, "backtrace not preallocated");
1581 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1582 objArrayOop methods = objArrayOop(m);
1583 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1585 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1586 typeArrayOop bcis = typeArrayOop(b);
1587 assert(bcis != NULL, "bci array not preallocated");
1589 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1591 JavaThread* thread = JavaThread::current();
1592 ResourceMark rm(thread);
1593 vframeStream st(thread);
1595 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1596 // methods as preallocated errors aren't created by "java" code.
1598 // fill in as much stack trace as possible
1599 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1600 int chunk_count = 0;
1602 for (;!st.at_end(); st.next()) {
1603 // Add entry and smear the -1 bci to 0 since the array only holds
1604 // unsigned shorts. The later line number lookup would just smear
1605 // the -1 to a 0 even if it could be recorded.
1606 int bci = st.bci();
1607 if (bci == SynchronizationEntryBCI) bci = 0;
1608 assert(bci == (jushort)bci, "doesn't fit");
1609 bcis->ushort_at_put(chunk_count, bci);
1610 methods->obj_at_put(chunk_count, st.method());
1612 chunk_count++;
1614 // Bail-out for deep stacks
1615 if (chunk_count >= max_chunks) break;
1616 }
1618 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1619 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1620 // can be removed in a JDK using this JVM version
1621 if (JDK_Version::is_gte_jdk17x_version()) {
1622 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1623 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1624 }
1626 }
1629 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1630 if (throwable == NULL) {
1631 THROW_0(vmSymbols::java_lang_NullPointerException());
1632 }
1633 objArrayOop chunk = objArrayOop(backtrace(throwable));
1634 int depth = 0;
1635 if (chunk != NULL) {
1636 // Iterate over chunks and count full ones
1637 while (true) {
1638 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1639 if (next == NULL) break;
1640 depth += trace_chunk_size;
1641 chunk = next;
1642 }
1643 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1644 // Count element in remaining partial chunk
1645 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1646 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1647 assert(methods != NULL && bcis != NULL, "sanity check");
1648 for (int i = 0; i < methods->length(); i++) {
1649 if (methods->obj_at(i) == NULL) break;
1650 depth++;
1651 }
1652 }
1653 return depth;
1654 }
1657 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1658 if (throwable == NULL) {
1659 THROW_0(vmSymbols::java_lang_NullPointerException());
1660 }
1661 if (index < 0) {
1662 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1663 }
1664 // Compute how many chunks to skip and index into actual chunk
1665 objArrayOop chunk = objArrayOop(backtrace(throwable));
1666 int skip_chunks = index / trace_chunk_size;
1667 int chunk_index = index % trace_chunk_size;
1668 while (chunk != NULL && skip_chunks > 0) {
1669 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1670 skip_chunks--;
1671 }
1672 if (chunk == NULL) {
1673 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1674 }
1675 // Get method,bci from chunk
1676 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1677 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1678 assert(methods != NULL && bcis != NULL, "sanity check");
1679 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1680 int bci = bcis->ushort_at(chunk_index);
1681 // Chunk can be partial full
1682 if (method.is_null()) {
1683 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1684 }
1686 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1687 return element;
1688 }
1690 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1691 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1692 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1694 // Allocate java.lang.StackTraceElement instance
1695 klassOop k = SystemDictionary::StackTraceElement_klass();
1696 assert(k != NULL, "must be loaded in 1.4+");
1697 instanceKlassHandle ik (THREAD, k);
1698 if (ik->should_be_initialized()) {
1699 ik->initialize(CHECK_0);
1700 }
1702 Handle element = ik->allocate_instance_handle(CHECK_0);
1703 // Fill in class name
1704 ResourceMark rm(THREAD);
1705 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1706 oop classname = StringTable::intern((char*) str, CHECK_0);
1707 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1708 // Fill in method name
1709 oop methodname = StringTable::intern(method->name(), CHECK_0);
1710 java_lang_StackTraceElement::set_methodName(element(), methodname);
1711 // Fill in source file name
1712 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1713 oop filename = StringTable::intern(source, CHECK_0);
1714 java_lang_StackTraceElement::set_fileName(element(), filename);
1715 // File in source line number
1716 int line_number;
1717 if (method->is_native()) {
1718 // Negative value different from -1 below, enabling Java code in
1719 // class java.lang.StackTraceElement to distinguish "native" from
1720 // "no LineNumberTable".
1721 line_number = -2;
1722 } else {
1723 // Returns -1 if no LineNumberTable, and otherwise actual line number
1724 line_number = method->line_number_from_bci(bci);
1725 }
1726 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1728 return element();
1729 }
1732 void java_lang_reflect_AccessibleObject::compute_offsets() {
1733 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1734 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1735 }
1737 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1738 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1739 return (jboolean) reflect->bool_field(override_offset);
1740 }
1742 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1743 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1744 reflect->bool_field_put(override_offset, (int) value);
1745 }
1747 void java_lang_reflect_Method::compute_offsets() {
1748 klassOop k = SystemDictionary::reflect_Method_klass();
1749 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1750 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1751 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1752 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1753 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1754 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1755 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1756 // The generic signature and annotations fields are only present in 1.5
1757 signature_offset = -1;
1758 annotations_offset = -1;
1759 parameter_annotations_offset = -1;
1760 annotation_default_offset = -1;
1761 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1762 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1763 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1764 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1765 }
1767 Handle java_lang_reflect_Method::create(TRAPS) {
1768 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1769 klassOop klass = SystemDictionary::reflect_Method_klass();
1770 // This class is eagerly initialized during VM initialization, since we keep a refence
1771 // to one of the methods
1772 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1773 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1774 }
1776 oop java_lang_reflect_Method::clazz(oop reflect) {
1777 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1778 return reflect->obj_field(clazz_offset);
1779 }
1781 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1782 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1783 reflect->obj_field_put(clazz_offset, value);
1784 }
1786 int java_lang_reflect_Method::slot(oop reflect) {
1787 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1788 return reflect->int_field(slot_offset);
1789 }
1791 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1792 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1793 reflect->int_field_put(slot_offset, value);
1794 }
1796 oop java_lang_reflect_Method::name(oop method) {
1797 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1798 return method->obj_field(name_offset);
1799 }
1801 void java_lang_reflect_Method::set_name(oop method, oop value) {
1802 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1803 method->obj_field_put(name_offset, value);
1804 }
1806 oop java_lang_reflect_Method::return_type(oop method) {
1807 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1808 return method->obj_field(returnType_offset);
1809 }
1811 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1812 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1813 method->obj_field_put(returnType_offset, value);
1814 }
1816 oop java_lang_reflect_Method::parameter_types(oop method) {
1817 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1818 return method->obj_field(parameterTypes_offset);
1819 }
1821 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1822 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1823 method->obj_field_put(parameterTypes_offset, value);
1824 }
1826 oop java_lang_reflect_Method::exception_types(oop method) {
1827 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1828 return method->obj_field(exceptionTypes_offset);
1829 }
1831 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1832 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1833 method->obj_field_put(exceptionTypes_offset, value);
1834 }
1836 int java_lang_reflect_Method::modifiers(oop method) {
1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1838 return method->int_field(modifiers_offset);
1839 }
1841 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1842 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1843 method->int_field_put(modifiers_offset, value);
1844 }
1846 bool java_lang_reflect_Method::has_signature_field() {
1847 return (signature_offset >= 0);
1848 }
1850 oop java_lang_reflect_Method::signature(oop method) {
1851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1852 assert(has_signature_field(), "signature field must be present");
1853 return method->obj_field(signature_offset);
1854 }
1856 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1858 assert(has_signature_field(), "signature field must be present");
1859 method->obj_field_put(signature_offset, value);
1860 }
1862 bool java_lang_reflect_Method::has_annotations_field() {
1863 return (annotations_offset >= 0);
1864 }
1866 oop java_lang_reflect_Method::annotations(oop method) {
1867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1868 assert(has_annotations_field(), "annotations field must be present");
1869 return method->obj_field(annotations_offset);
1870 }
1872 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1874 assert(has_annotations_field(), "annotations field must be present");
1875 method->obj_field_put(annotations_offset, value);
1876 }
1878 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1879 return (parameter_annotations_offset >= 0);
1880 }
1882 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1884 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1885 return method->obj_field(parameter_annotations_offset);
1886 }
1888 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1889 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1890 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1891 method->obj_field_put(parameter_annotations_offset, value);
1892 }
1894 bool java_lang_reflect_Method::has_annotation_default_field() {
1895 return (annotation_default_offset >= 0);
1896 }
1898 oop java_lang_reflect_Method::annotation_default(oop method) {
1899 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1900 assert(has_annotation_default_field(), "annotation default field must be present");
1901 return method->obj_field(annotation_default_offset);
1902 }
1904 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1905 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1906 assert(has_annotation_default_field(), "annotation default field must be present");
1907 method->obj_field_put(annotation_default_offset, value);
1908 }
1910 void java_lang_reflect_Constructor::compute_offsets() {
1911 klassOop k = SystemDictionary::reflect_Constructor_klass();
1912 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1913 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1914 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1915 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1916 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1917 // The generic signature and annotations fields are only present in 1.5
1918 signature_offset = -1;
1919 annotations_offset = -1;
1920 parameter_annotations_offset = -1;
1921 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1922 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1923 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1924 }
1926 Handle java_lang_reflect_Constructor::create(TRAPS) {
1927 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1928 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1929 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1930 instanceKlassHandle klass (THREAD, k);
1931 // Ensure it is initialized
1932 klass->initialize(CHECK_NH);
1933 return klass->allocate_instance_handle(CHECK_NH);
1934 }
1936 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1937 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1938 return reflect->obj_field(clazz_offset);
1939 }
1941 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1942 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1943 reflect->obj_field_put(clazz_offset, value);
1944 }
1946 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1947 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1948 return constructor->obj_field(parameterTypes_offset);
1949 }
1951 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1952 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1953 constructor->obj_field_put(parameterTypes_offset, value);
1954 }
1956 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1957 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1958 return constructor->obj_field(exceptionTypes_offset);
1959 }
1961 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1962 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1963 constructor->obj_field_put(exceptionTypes_offset, value);
1964 }
1966 int java_lang_reflect_Constructor::slot(oop reflect) {
1967 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1968 return reflect->int_field(slot_offset);
1969 }
1971 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1972 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1973 reflect->int_field_put(slot_offset, value);
1974 }
1976 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1977 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1978 return constructor->int_field(modifiers_offset);
1979 }
1981 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1982 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1983 constructor->int_field_put(modifiers_offset, value);
1984 }
1986 bool java_lang_reflect_Constructor::has_signature_field() {
1987 return (signature_offset >= 0);
1988 }
1990 oop java_lang_reflect_Constructor::signature(oop constructor) {
1991 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1992 assert(has_signature_field(), "signature field must be present");
1993 return constructor->obj_field(signature_offset);
1994 }
1996 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
1997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1998 assert(has_signature_field(), "signature field must be present");
1999 constructor->obj_field_put(signature_offset, value);
2000 }
2002 bool java_lang_reflect_Constructor::has_annotations_field() {
2003 return (annotations_offset >= 0);
2004 }
2006 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2008 assert(has_annotations_field(), "annotations field must be present");
2009 return constructor->obj_field(annotations_offset);
2010 }
2012 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2013 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2014 assert(has_annotations_field(), "annotations field must be present");
2015 constructor->obj_field_put(annotations_offset, value);
2016 }
2018 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2019 return (parameter_annotations_offset >= 0);
2020 }
2022 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2023 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2024 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2025 return method->obj_field(parameter_annotations_offset);
2026 }
2028 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2029 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2030 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2031 method->obj_field_put(parameter_annotations_offset, value);
2032 }
2034 void java_lang_reflect_Field::compute_offsets() {
2035 klassOop k = SystemDictionary::reflect_Field_klass();
2036 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2037 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2038 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2039 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2040 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2041 // The generic signature and annotations fields are only present in 1.5
2042 signature_offset = -1;
2043 annotations_offset = -1;
2044 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2045 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2046 }
2048 Handle java_lang_reflect_Field::create(TRAPS) {
2049 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2050 Symbol* name = vmSymbols::java_lang_reflect_Field();
2051 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2052 instanceKlassHandle klass (THREAD, k);
2053 // Ensure it is initialized
2054 klass->initialize(CHECK_NH);
2055 return klass->allocate_instance_handle(CHECK_NH);
2056 }
2058 oop java_lang_reflect_Field::clazz(oop reflect) {
2059 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2060 return reflect->obj_field(clazz_offset);
2061 }
2063 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2065 reflect->obj_field_put(clazz_offset, value);
2066 }
2068 oop java_lang_reflect_Field::name(oop field) {
2069 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2070 return field->obj_field(name_offset);
2071 }
2073 void java_lang_reflect_Field::set_name(oop field, oop value) {
2074 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2075 field->obj_field_put(name_offset, value);
2076 }
2078 oop java_lang_reflect_Field::type(oop field) {
2079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2080 return field->obj_field(type_offset);
2081 }
2083 void java_lang_reflect_Field::set_type(oop field, oop value) {
2084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2085 field->obj_field_put(type_offset, value);
2086 }
2088 int java_lang_reflect_Field::slot(oop reflect) {
2089 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2090 return reflect->int_field(slot_offset);
2091 }
2093 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2094 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2095 reflect->int_field_put(slot_offset, value);
2096 }
2098 int java_lang_reflect_Field::modifiers(oop field) {
2099 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2100 return field->int_field(modifiers_offset);
2101 }
2103 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2104 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2105 field->int_field_put(modifiers_offset, value);
2106 }
2108 bool java_lang_reflect_Field::has_signature_field() {
2109 return (signature_offset >= 0);
2110 }
2112 oop java_lang_reflect_Field::signature(oop field) {
2113 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2114 assert(has_signature_field(), "signature field must be present");
2115 return field->obj_field(signature_offset);
2116 }
2118 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2119 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2120 assert(has_signature_field(), "signature field must be present");
2121 field->obj_field_put(signature_offset, value);
2122 }
2124 bool java_lang_reflect_Field::has_annotations_field() {
2125 return (annotations_offset >= 0);
2126 }
2128 oop java_lang_reflect_Field::annotations(oop field) {
2129 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2130 assert(has_annotations_field(), "annotations field must be present");
2131 return field->obj_field(annotations_offset);
2132 }
2134 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2136 assert(has_annotations_field(), "annotations field must be present");
2137 field->obj_field_put(annotations_offset, value);
2138 }
2141 void sun_reflect_ConstantPool::compute_offsets() {
2142 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2143 // This null test can be removed post beta
2144 if (k != NULL) {
2145 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2146 }
2147 }
2150 Handle sun_reflect_ConstantPool::create(TRAPS) {
2151 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2152 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2153 instanceKlassHandle klass (THREAD, k);
2154 // Ensure it is initialized
2155 klass->initialize(CHECK_NH);
2156 return klass->allocate_instance_handle(CHECK_NH);
2157 }
2160 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2161 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2162 return reflect->obj_field(_cp_oop_offset);
2163 }
2166 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2167 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2168 reflect->obj_field_put(_cp_oop_offset, value);
2169 }
2171 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2172 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2173 // This null test can be removed post beta
2174 if (k != NULL) {
2175 compute_offset(_base_offset, k,
2176 vmSymbols::base_name(), vmSymbols::object_signature());
2177 }
2178 }
2180 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2181 klassOop k = SystemDictionary::box_klass(type);
2182 if (k == NULL) return NULL;
2183 instanceKlassHandle h (THREAD, k);
2184 if (!h->is_initialized()) h->initialize(CHECK_0);
2185 return h->allocate_instance(THREAD);
2186 }
2189 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2190 oop box = initialize_and_allocate(type, CHECK_0);
2191 if (box == NULL) return NULL;
2192 switch (type) {
2193 case T_BOOLEAN:
2194 box->bool_field_put(value_offset, value->z);
2195 break;
2196 case T_CHAR:
2197 box->char_field_put(value_offset, value->c);
2198 break;
2199 case T_FLOAT:
2200 box->float_field_put(value_offset, value->f);
2201 break;
2202 case T_DOUBLE:
2203 box->double_field_put(long_value_offset, value->d);
2204 break;
2205 case T_BYTE:
2206 box->byte_field_put(value_offset, value->b);
2207 break;
2208 case T_SHORT:
2209 box->short_field_put(value_offset, value->s);
2210 break;
2211 case T_INT:
2212 box->int_field_put(value_offset, value->i);
2213 break;
2214 case T_LONG:
2215 box->long_field_put(long_value_offset, value->j);
2216 break;
2217 default:
2218 return NULL;
2219 }
2220 return box;
2221 }
2224 BasicType java_lang_boxing_object::basic_type(oop box) {
2225 if (box == NULL) return T_ILLEGAL;
2226 BasicType type = SystemDictionary::box_klass_type(box->klass());
2227 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2228 return T_ILLEGAL;
2229 return type;
2230 }
2233 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2234 BasicType type = SystemDictionary::box_klass_type(box->klass());
2235 switch (type) {
2236 case T_BOOLEAN:
2237 value->z = box->bool_field(value_offset);
2238 break;
2239 case T_CHAR:
2240 value->c = box->char_field(value_offset);
2241 break;
2242 case T_FLOAT:
2243 value->f = box->float_field(value_offset);
2244 break;
2245 case T_DOUBLE:
2246 value->d = box->double_field(long_value_offset);
2247 break;
2248 case T_BYTE:
2249 value->b = box->byte_field(value_offset);
2250 break;
2251 case T_SHORT:
2252 value->s = box->short_field(value_offset);
2253 break;
2254 case T_INT:
2255 value->i = box->int_field(value_offset);
2256 break;
2257 case T_LONG:
2258 value->j = box->long_field(long_value_offset);
2259 break;
2260 default:
2261 return T_ILLEGAL;
2262 } // end switch
2263 return type;
2264 }
2267 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2268 BasicType type = SystemDictionary::box_klass_type(box->klass());
2269 switch (type) {
2270 case T_BOOLEAN:
2271 box->bool_field_put(value_offset, value->z);
2272 break;
2273 case T_CHAR:
2274 box->char_field_put(value_offset, value->c);
2275 break;
2276 case T_FLOAT:
2277 box->float_field_put(value_offset, value->f);
2278 break;
2279 case T_DOUBLE:
2280 box->double_field_put(long_value_offset, value->d);
2281 break;
2282 case T_BYTE:
2283 box->byte_field_put(value_offset, value->b);
2284 break;
2285 case T_SHORT:
2286 box->short_field_put(value_offset, value->s);
2287 break;
2288 case T_INT:
2289 box->int_field_put(value_offset, value->i);
2290 break;
2291 case T_LONG:
2292 box->long_field_put(long_value_offset, value->j);
2293 break;
2294 default:
2295 return T_ILLEGAL;
2296 } // end switch
2297 return type;
2298 }
2301 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2302 switch (type) {
2303 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2304 case T_CHAR: st->print("%d", value->c); break;
2305 case T_BYTE: st->print("%d", value->b); break;
2306 case T_SHORT: st->print("%d", value->s); break;
2307 case T_INT: st->print("%d", value->i); break;
2308 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2309 case T_FLOAT: st->print("%f", value->f); break;
2310 case T_DOUBLE: st->print("%lf", value->d); break;
2311 default: st->print("type %d?", type); break;
2312 }
2313 }
2316 // Support for java_lang_ref_Reference
2317 oop java_lang_ref_Reference::pending_list_lock() {
2318 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2319 address addr = ik->static_field_addr(static_lock_offset);
2320 if (UseCompressedOops) {
2321 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2322 } else {
2323 return oopDesc::load_decode_heap_oop((oop*)addr);
2324 }
2325 }
2327 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2328 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2329 address addr = ik->static_field_addr(static_pending_offset);
2330 // XXX This might not be HeapWord aligned, almost rather be char *.
2331 return (HeapWord*)addr;
2332 }
2334 oop java_lang_ref_Reference::pending_list() {
2335 char *addr = (char *)pending_list_addr();
2336 if (UseCompressedOops) {
2337 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2338 } else {
2339 return oopDesc::load_decode_heap_oop((oop*)addr);
2340 }
2341 }
2344 // Support for java_lang_ref_SoftReference
2346 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2347 return ref->long_field(timestamp_offset);
2348 }
2350 jlong java_lang_ref_SoftReference::clock() {
2351 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2352 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2353 return *offset;
2354 }
2356 void java_lang_ref_SoftReference::set_clock(jlong value) {
2357 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2358 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2359 *offset = value;
2360 }
2363 // Support for java_lang_invoke_MethodHandle
2365 int java_lang_invoke_MethodHandle::_type_offset;
2366 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2367 int java_lang_invoke_MethodHandle::_vmentry_offset;
2369 int java_lang_invoke_MemberName::_clazz_offset;
2370 int java_lang_invoke_MemberName::_name_offset;
2371 int java_lang_invoke_MemberName::_type_offset;
2372 int java_lang_invoke_MemberName::_flags_offset;
2373 int java_lang_invoke_MemberName::_vmtarget_offset;
2374 int java_lang_invoke_MemberName::_vmindex_offset;
2376 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2378 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2379 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2381 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2383 int java_lang_invoke_CountingMethodHandle::_vmcount_offset;
2385 void java_lang_invoke_MethodHandle::compute_offsets() {
2386 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2387 if (klass_oop != NULL && EnableInvokeDynamic) {
2388 bool allow_super = false;
2389 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2390 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2391 }
2392 }
2394 void java_lang_invoke_MemberName::compute_offsets() {
2395 klassOop klass_oop = SystemDictionary::MemberName_klass();
2396 if (klass_oop != NULL && EnableInvokeDynamic) {
2397 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2398 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2399 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2400 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2401 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2402 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2403 }
2404 }
2406 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2407 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2408 if (k != NULL && EnableInvokeDynamic) {
2409 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2410 }
2411 }
2413 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2414 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2415 if (k != NULL && EnableInvokeDynamic) {
2416 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2417 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2418 }
2419 }
2421 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2422 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2423 if (k != NULL && EnableInvokeDynamic) {
2424 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2425 }
2426 }
2428 void java_lang_invoke_CountingMethodHandle::compute_offsets() {
2429 klassOop k = SystemDictionary::CountingMethodHandle_klass();
2430 if (k != NULL && EnableInvokeDynamic) {
2431 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true);
2432 }
2433 }
2435 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) {
2436 assert(is_instance(mh), "CMH only");
2437 return mh->int_field(_vmcount_offset);
2438 }
2440 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) {
2441 assert(is_instance(mh), "CMH only");
2442 mh->int_field_put(_vmcount_offset, count);
2443 }
2445 oop java_lang_invoke_MethodHandle::type(oop mh) {
2446 return mh->obj_field(_type_offset);
2447 }
2449 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2450 mh->obj_field_put(_type_offset, mtype);
2451 }
2453 // fetch type.form.vmslots, which is the number of JVM stack slots
2454 // required to carry the arguments of this MH
2455 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2456 oop mtype = type(mh);
2457 if (mtype == NULL) return 0; // Java code would get NPE
2458 oop form = java_lang_invoke_MethodType::form(mtype);
2459 if (form == NULL) return 0; // Java code would get NPE
2460 return java_lang_invoke_MethodTypeForm::vmslots(form);
2461 }
2463 // fetch the low-level entry point for this mh
2464 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2465 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2466 }
2468 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2469 assert(_vmentry_offset != 0, "must be present");
2471 // This is always the final step that initializes a valid method handle:
2472 mh->release_address_field_put(_vmentry_offset, (address) me);
2474 // There should be enough memory barriers on exit from native methods
2475 // to ensure that the MH is fully initialized to all threads before
2476 // Java code can publish it in global data structures.
2477 // But just in case, we use release_address_field_put.
2478 }
2480 /// MemberName accessors
2482 oop java_lang_invoke_MemberName::clazz(oop mname) {
2483 assert(is_instance(mname), "wrong type");
2484 return mname->obj_field(_clazz_offset);
2485 }
2487 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2488 assert(is_instance(mname), "wrong type");
2489 mname->obj_field_put(_clazz_offset, clazz);
2490 }
2492 oop java_lang_invoke_MemberName::name(oop mname) {
2493 assert(is_instance(mname), "wrong type");
2494 return mname->obj_field(_name_offset);
2495 }
2497 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2498 assert(is_instance(mname), "wrong type");
2499 mname->obj_field_put(_name_offset, name);
2500 }
2502 oop java_lang_invoke_MemberName::type(oop mname) {
2503 assert(is_instance(mname), "wrong type");
2504 return mname->obj_field(_type_offset);
2505 }
2507 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2508 assert(is_instance(mname), "wrong type");
2509 mname->obj_field_put(_type_offset, type);
2510 }
2512 int java_lang_invoke_MemberName::flags(oop mname) {
2513 assert(is_instance(mname), "wrong type");
2514 return mname->int_field(_flags_offset);
2515 }
2517 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2518 assert(is_instance(mname), "wrong type");
2519 mname->int_field_put(_flags_offset, flags);
2520 }
2522 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2523 assert(is_instance(mname), "wrong type");
2524 return mname->obj_field(_vmtarget_offset);
2525 }
2527 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2528 assert(is_instance(mname), "wrong type");
2529 mname->obj_field_put(_vmtarget_offset, ref);
2530 }
2532 int java_lang_invoke_MemberName::vmindex(oop mname) {
2533 assert(is_instance(mname), "wrong type");
2534 return mname->int_field(_vmindex_offset);
2535 }
2537 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2538 assert(is_instance(mname), "wrong type");
2539 mname->int_field_put(_vmindex_offset, index);
2540 }
2542 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2543 assert(is_instance(mh), "MH only");
2544 return mh->obj_field(_vmtarget_offset);
2545 }
2547 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2548 assert(is_instance(mh), "MH only");
2549 mh->obj_field_put(_vmtarget_offset, ref);
2550 }
2552 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2553 assert(is_instance(mh), "DMH only");
2554 return mh->int_field(_vmindex_offset);
2555 }
2557 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2558 assert(is_instance(mh), "DMH only");
2559 mh->int_field_put(_vmindex_offset, index);
2560 }
2562 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2563 assert(is_instance(mh), "BMH only");
2564 return mh->int_field(_vmargslot_offset);
2565 }
2567 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2568 assert(is_instance(mh), "BMH only");
2569 return mh->obj_field(_argument_offset);
2570 }
2572 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2573 assert(is_instance(mh), "AMH only");
2574 return mh->int_field(_conversion_offset);
2575 }
2577 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2578 assert(is_instance(mh), "AMH only");
2579 mh->int_field_put(_conversion_offset, conv);
2580 }
2583 // Support for java_lang_invoke_MethodType
2585 int java_lang_invoke_MethodType::_rtype_offset;
2586 int java_lang_invoke_MethodType::_ptypes_offset;
2587 int java_lang_invoke_MethodType::_form_offset;
2589 void java_lang_invoke_MethodType::compute_offsets() {
2590 klassOop k = SystemDictionary::MethodType_klass();
2591 if (k != NULL) {
2592 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2593 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2594 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2595 }
2596 }
2598 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2599 st->print("(");
2600 objArrayOop pts = ptypes(mt);
2601 for (int i = 0, limit = pts->length(); i < limit; i++) {
2602 java_lang_Class::print_signature(pts->obj_at(i), st);
2603 }
2604 st->print(")");
2605 java_lang_Class::print_signature(rtype(mt), st);
2606 }
2608 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2609 ResourceMark rm;
2610 stringStream buffer(128);
2611 print_signature(mt, &buffer);
2612 const char* sigstr = buffer.base();
2613 int siglen = (int) buffer.size();
2614 Symbol *name;
2615 if (!intern_if_not_found) {
2616 name = SymbolTable::probe(sigstr, siglen);
2617 } else {
2618 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2619 }
2620 return name;
2621 }
2623 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2624 if (rtype(mt1) != rtype(mt2))
2625 return false;
2626 if (ptype_count(mt1) != ptype_count(mt2))
2627 return false;
2628 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2629 if (ptype(mt1, i) != ptype(mt2, i))
2630 return false;
2631 }
2632 return true;
2633 }
2635 oop java_lang_invoke_MethodType::rtype(oop mt) {
2636 assert(is_instance(mt), "must be a MethodType");
2637 return mt->obj_field(_rtype_offset);
2638 }
2640 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2641 assert(is_instance(mt), "must be a MethodType");
2642 return (objArrayOop) mt->obj_field(_ptypes_offset);
2643 }
2645 oop java_lang_invoke_MethodType::form(oop mt) {
2646 assert(is_instance(mt), "must be a MethodType");
2647 return mt->obj_field(_form_offset);
2648 }
2650 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2651 return ptypes(mt)->obj_at(idx);
2652 }
2654 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2655 return ptypes(mt)->length();
2656 }
2660 // Support for java_lang_invoke_MethodTypeForm
2662 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2663 int java_lang_invoke_MethodTypeForm::_vmlayout_offset;
2664 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2665 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2667 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2668 klassOop k = SystemDictionary::MethodTypeForm_klass();
2669 if (k != NULL) {
2670 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2671 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature());
2672 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2673 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2674 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2675 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2676 }
2677 }
2679 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2680 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2681 assert(_vmslots_offset > 0, "");
2682 return mtform->int_field(_vmslots_offset);
2683 }
2685 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) {
2686 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2687 assert(_vmlayout_offset > 0, "");
2688 return mtform->obj_field(_vmlayout_offset);
2689 }
2691 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) {
2692 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2693 oop previous = vmlayout(mtform);
2694 if (previous != NULL) {
2695 return previous; // someone else beat us to it
2696 }
2697 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset);
2698 OrderAccess::storestore(); // make sure our copy is fully committed
2699 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous);
2700 if (previous != NULL) {
2701 return previous; // someone else beat us to it
2702 }
2703 return cookie;
2704 }
2706 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2707 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2708 return mtform->obj_field(_erasedType_offset);
2709 }
2711 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2712 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2713 return mtform->obj_field(_genericInvoker_offset);
2714 }
2717 // Support for java_lang_invoke_CallSite
2719 int java_lang_invoke_CallSite::_target_offset;
2721 void java_lang_invoke_CallSite::compute_offsets() {
2722 if (!EnableInvokeDynamic) return;
2723 klassOop k = SystemDictionary::CallSite_klass();
2724 if (k != NULL) {
2725 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2726 }
2728 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile
2729 // (For C2: keep this until we have throttling logic for uncommon traps.)
2730 if (k != NULL) {
2731 instanceKlass* ik = instanceKlass::cast(k);
2732 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature());
2733 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature());
2734 guarantee(m_normal != NULL && m_volatile != NULL, "must exist");
2735 m_normal->set_not_compilable_quietly();
2736 m_volatile->set_not_compilable_quietly();
2737 }
2738 }
2741 // Support for java_security_AccessControlContext
2743 int java_security_AccessControlContext::_context_offset = 0;
2744 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2745 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2747 void java_security_AccessControlContext::compute_offsets() {
2748 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2749 fieldDescriptor fd;
2750 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2752 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2753 fatal("Invalid layout of java.security.AccessControlContext");
2754 }
2755 _context_offset = fd.offset();
2757 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2758 fatal("Invalid layout of java.security.AccessControlContext");
2759 }
2760 _privilegedContext_offset = fd.offset();
2762 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2763 fatal("Invalid layout of java.security.AccessControlContext");
2764 }
2765 _isPrivileged_offset = fd.offset();
2766 }
2769 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2770 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2771 // Ensure klass is initialized
2772 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2773 // Allocate result
2774 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2775 // Fill in values
2776 result->obj_field_put(_context_offset, context());
2777 result->obj_field_put(_privilegedContext_offset, privileged_context());
2778 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2779 return result;
2780 }
2783 // Support for java_lang_ClassLoader
2784 bool java_lang_ClassLoader::offsets_computed = false;
2785 int java_lang_ClassLoader::parallelCapable_offset = -1;
2787 void java_lang_ClassLoader::compute_offsets() {
2788 assert(!offsets_computed, "offsets should be initialized only once");
2789 offsets_computed = true;
2791 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2792 klassOop k1 = SystemDictionary::ClassLoader_klass();
2793 compute_optional_offset(parallelCapable_offset,
2794 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2795 }
2797 oop java_lang_ClassLoader::parent(oop loader) {
2798 assert(loader->is_oop(), "loader must be oop");
2799 return loader->obj_field(parent_offset);
2800 }
2803 // For class loader classes, parallelCapable defined
2804 // based on non-null field
2805 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2806 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2807 if (!JDK_Version::is_gte_jdk17x_version()
2808 || parallelCapable_offset == -1) {
2809 // Default for backward compatibility is false
2810 return false;
2811 }
2812 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2813 }
2815 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2816 // Fix for 4474172; see evaluation for more details
2817 loader = non_reflection_class_loader(loader);
2819 oop cl = SystemDictionary::java_system_loader();
2820 while(cl != NULL) {
2821 if (cl == loader) return true;
2822 cl = parent(cl);
2823 }
2824 return false;
2825 }
2827 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2828 if (loader != NULL) {
2829 // See whether this is one of the class loaders associated with
2830 // the generated bytecodes for reflection, and if so, "magically"
2831 // delegate to its parent to prevent class loading from occurring
2832 // in places where applications using reflection didn't expect it.
2833 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2834 // This might be null in non-1.4 JDKs
2835 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2836 return parent(loader);
2837 }
2838 }
2839 return loader;
2840 }
2843 // Support for java_lang_System
2844 int java_lang_System::in_offset_in_bytes() {
2845 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2846 }
2849 int java_lang_System::out_offset_in_bytes() {
2850 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2851 }
2854 int java_lang_System::err_offset_in_bytes() {
2855 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2856 }
2860 int java_lang_Class::_klass_offset;
2861 int java_lang_Class::_array_klass_offset;
2862 int java_lang_Class::_resolved_constructor_offset;
2863 int java_lang_Class::_oop_size_offset;
2864 int java_lang_Class::_static_oop_field_count_offset;
2865 int java_lang_Throwable::backtrace_offset;
2866 int java_lang_Throwable::detailMessage_offset;
2867 int java_lang_Throwable::cause_offset;
2868 int java_lang_Throwable::stackTrace_offset;
2869 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2870 int java_lang_reflect_AccessibleObject::override_offset;
2871 int java_lang_reflect_Method::clazz_offset;
2872 int java_lang_reflect_Method::name_offset;
2873 int java_lang_reflect_Method::returnType_offset;
2874 int java_lang_reflect_Method::parameterTypes_offset;
2875 int java_lang_reflect_Method::exceptionTypes_offset;
2876 int java_lang_reflect_Method::slot_offset;
2877 int java_lang_reflect_Method::modifiers_offset;
2878 int java_lang_reflect_Method::signature_offset;
2879 int java_lang_reflect_Method::annotations_offset;
2880 int java_lang_reflect_Method::parameter_annotations_offset;
2881 int java_lang_reflect_Method::annotation_default_offset;
2882 int java_lang_reflect_Constructor::clazz_offset;
2883 int java_lang_reflect_Constructor::parameterTypes_offset;
2884 int java_lang_reflect_Constructor::exceptionTypes_offset;
2885 int java_lang_reflect_Constructor::slot_offset;
2886 int java_lang_reflect_Constructor::modifiers_offset;
2887 int java_lang_reflect_Constructor::signature_offset;
2888 int java_lang_reflect_Constructor::annotations_offset;
2889 int java_lang_reflect_Constructor::parameter_annotations_offset;
2890 int java_lang_reflect_Field::clazz_offset;
2891 int java_lang_reflect_Field::name_offset;
2892 int java_lang_reflect_Field::type_offset;
2893 int java_lang_reflect_Field::slot_offset;
2894 int java_lang_reflect_Field::modifiers_offset;
2895 int java_lang_reflect_Field::signature_offset;
2896 int java_lang_reflect_Field::annotations_offset;
2897 int java_lang_boxing_object::value_offset;
2898 int java_lang_boxing_object::long_value_offset;
2899 int java_lang_ref_Reference::referent_offset;
2900 int java_lang_ref_Reference::queue_offset;
2901 int java_lang_ref_Reference::next_offset;
2902 int java_lang_ref_Reference::discovered_offset;
2903 int java_lang_ref_Reference::static_lock_offset;
2904 int java_lang_ref_Reference::static_pending_offset;
2905 int java_lang_ref_Reference::number_of_fake_oop_fields;
2906 int java_lang_ref_SoftReference::timestamp_offset;
2907 int java_lang_ref_SoftReference::static_clock_offset;
2908 int java_lang_ClassLoader::parent_offset;
2909 int java_lang_System::static_in_offset;
2910 int java_lang_System::static_out_offset;
2911 int java_lang_System::static_err_offset;
2912 int java_lang_StackTraceElement::declaringClass_offset;
2913 int java_lang_StackTraceElement::methodName_offset;
2914 int java_lang_StackTraceElement::fileName_offset;
2915 int java_lang_StackTraceElement::lineNumber_offset;
2916 int java_lang_AssertionStatusDirectives::classes_offset;
2917 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2918 int java_lang_AssertionStatusDirectives::packages_offset;
2919 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2920 int java_lang_AssertionStatusDirectives::deflt_offset;
2921 int java_nio_Buffer::_limit_offset;
2922 int sun_misc_AtomicLongCSImpl::_value_offset;
2923 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2924 int sun_reflect_ConstantPool::_cp_oop_offset;
2925 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2928 // Support for java_lang_StackTraceElement
2930 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2931 element->obj_field_put(fileName_offset, value);
2932 }
2934 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2935 element->obj_field_put(declaringClass_offset, value);
2936 }
2938 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2939 element->obj_field_put(methodName_offset, value);
2940 }
2942 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2943 element->int_field_put(lineNumber_offset, value);
2944 }
2947 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2949 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2950 o->obj_field_put(classes_offset, val);
2951 }
2953 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2954 o->obj_field_put(classEnabled_offset, val);
2955 }
2957 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2958 o->obj_field_put(packages_offset, val);
2959 }
2961 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2962 o->obj_field_put(packageEnabled_offset, val);
2963 }
2965 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2966 o->bool_field_put(deflt_offset, val);
2967 }
2970 // Support for intrinsification of java.nio.Buffer.checkIndex
2971 int java_nio_Buffer::limit_offset() {
2972 return _limit_offset;
2973 }
2976 void java_nio_Buffer::compute_offsets() {
2977 klassOop k = SystemDictionary::nio_Buffer_klass();
2978 assert(k != NULL, "must be loaded in 1.4+");
2979 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2980 }
2982 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
2983 int sun_misc_AtomicLongCSImpl::value_offset() {
2984 assert(SystemDictionary::AtomicLongCSImpl_klass() != NULL, "can't call this");
2985 return _value_offset;
2986 }
2989 void sun_misc_AtomicLongCSImpl::compute_offsets() {
2990 klassOop k = SystemDictionary::AtomicLongCSImpl_klass();
2991 // If this class is not present, its value field offset won't be referenced.
2992 if (k != NULL) {
2993 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
2994 }
2995 }
2997 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2998 if (_owner_offset != 0) return;
3000 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3001 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3002 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
3003 compute_offset(_owner_offset, k,
3004 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3005 }
3007 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3008 assert(_owner_offset != 0, "Must be initialized");
3009 return obj->obj_field(_owner_offset);
3010 }
3012 // Compute hard-coded offsets
3013 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3014 // are not available to determine the offset_of_static_fields.
3015 void JavaClasses::compute_hard_coded_offsets() {
3016 const int x = heapOopSize;
3017 const int header = instanceOopDesc::base_offset_in_bytes();
3019 // Throwable Class
3020 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3021 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3022 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3023 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3024 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3026 // java_lang_boxing_object
3027 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3028 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3030 // java_lang_ref_Reference:
3031 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3032 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3033 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3034 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3035 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3036 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3037 // Artificial fields for java_lang_ref_Reference
3038 // The first field is for the discovered field added in 1.4
3039 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3041 // java_lang_ref_SoftReference Class
3042 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3043 // Don't multiply static fields because they are always in wordSize units
3044 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3046 // java_lang_ClassLoader
3047 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3049 // java_lang_System
3050 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3051 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3052 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3054 // java_lang_StackTraceElement
3055 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3056 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3057 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3058 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3059 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3060 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3061 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3062 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3063 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3065 }
3068 // Compute non-hard-coded field offsets of all the classes in this file
3069 void JavaClasses::compute_offsets() {
3070 // java_lang_Class::compute_offsets was called earlier in bootstrap
3071 java_lang_ClassLoader::compute_offsets();
3072 java_lang_Thread::compute_offsets();
3073 java_lang_ThreadGroup::compute_offsets();
3074 if (EnableInvokeDynamic) {
3075 java_lang_invoke_MethodHandle::compute_offsets();
3076 java_lang_invoke_MemberName::compute_offsets();
3077 java_lang_invoke_DirectMethodHandle::compute_offsets();
3078 java_lang_invoke_BoundMethodHandle::compute_offsets();
3079 java_lang_invoke_AdapterMethodHandle::compute_offsets();
3080 java_lang_invoke_MethodType::compute_offsets();
3081 java_lang_invoke_MethodTypeForm::compute_offsets();
3082 java_lang_invoke_CallSite::compute_offsets();
3083 java_lang_invoke_CountingMethodHandle::compute_offsets();
3084 }
3085 java_security_AccessControlContext::compute_offsets();
3086 // Initialize reflection classes. The layouts of these classes
3087 // changed with the new reflection implementation in JDK 1.4, and
3088 // since the Universe doesn't know what JDK version it is until this
3089 // point we defer computation of these offsets until now.
3090 java_lang_reflect_AccessibleObject::compute_offsets();
3091 java_lang_reflect_Method::compute_offsets();
3092 java_lang_reflect_Constructor::compute_offsets();
3093 java_lang_reflect_Field::compute_offsets();
3094 if (JDK_Version::is_gte_jdk14x_version()) {
3095 java_nio_Buffer::compute_offsets();
3096 }
3097 if (JDK_Version::is_gte_jdk15x_version()) {
3098 sun_reflect_ConstantPool::compute_offsets();
3099 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3100 }
3101 sun_misc_AtomicLongCSImpl::compute_offsets();
3103 // generated interpreter code wants to know about the offsets we just computed:
3104 AbstractAssembler::update_delayed_values();
3105 }
3107 #ifndef PRODUCT
3109 // These functions exist to assert the validity of hard-coded field offsets to guard
3110 // against changes in the class files
3112 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3113 EXCEPTION_MARK;
3114 fieldDescriptor fd;
3115 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3116 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3117 instanceKlassHandle h_klass (THREAD, k);
3118 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3119 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3120 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3121 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3122 return false;
3123 }
3124 if (fd.is_static()) {
3125 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3126 return false;
3127 }
3128 if (fd.offset() == hardcoded_offset ) {
3129 return true;
3130 } else {
3131 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3132 klass_name, field_name, hardcoded_offset, fd.offset());
3133 return false;
3134 }
3135 }
3138 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3139 EXCEPTION_MARK;
3140 fieldDescriptor fd;
3141 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3142 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3143 instanceKlassHandle h_klass (THREAD, k);
3144 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3145 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3146 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3147 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3148 return false;
3149 }
3150 if (!fd.is_static()) {
3151 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3152 return false;
3153 }
3154 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3155 return true;
3156 } else {
3157 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());
3158 return false;
3159 }
3160 }
3163 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3164 EXCEPTION_MARK;
3165 fieldDescriptor fd;
3166 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3167 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3168 instanceKlassHandle h_klass (THREAD, k);
3169 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3170 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3171 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3172 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3173 return false;
3174 }
3175 if (!fd.is_static() || !fd.has_initial_value()) {
3176 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3177 return false;
3178 }
3179 if (!fd.initial_value_tag().is_int()) {
3180 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3181 return false;
3182 }
3183 jint field_value = fd.int_initial_value();
3184 if (field_value == hardcoded_constant) {
3185 return true;
3186 } else {
3187 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);
3188 return false;
3189 }
3190 }
3193 // Check the hard-coded field offsets of all the classes in this file
3195 void JavaClasses::check_offsets() {
3196 bool valid = true;
3198 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3199 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3201 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3202 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3204 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3205 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3207 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3208 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3210 // java.lang.String
3212 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3213 if (java_lang_String::has_offset_field()) {
3214 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3215 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3216 }
3217 if (java_lang_String::has_hash_field()) {
3218 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3219 }
3221 // java.lang.Class
3223 // Fake fields
3224 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3225 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3226 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3228 // java.lang.Throwable
3230 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3231 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3232 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3233 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3235 // Boxed primitive objects (java_lang_boxing_object)
3237 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3238 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3239 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3240 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3241 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3242 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3243 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3244 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3246 // java.lang.ClassLoader
3248 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3250 // java.lang.System
3252 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3253 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3254 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3256 // java.lang.StackTraceElement
3258 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3259 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3260 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3261 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3263 // java.lang.ref.Reference
3265 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3266 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3267 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3268 // Fake field
3269 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3270 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3271 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3273 // java.lang.ref.SoftReference
3275 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3276 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3278 // java.lang.AssertionStatusDirectives
3279 //
3280 // The CheckAssertionStatusDirectives boolean can be removed from here and
3281 // globals.hpp after the AssertionStatusDirectives class has been integrated
3282 // into merlin "for some time." Without it, the vm will fail with early
3283 // merlin builds.
3285 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3286 const char* nm = "java/lang/AssertionStatusDirectives";
3287 const char* sig = "[Ljava/lang/String;";
3288 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3289 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3290 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3291 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3292 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3293 }
3295 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3296 }
3298 #endif // PRODUCT
3300 int InjectedField::compute_offset() {
3301 klassOop klass_oop = klass();
3302 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3303 if (!may_be_java && !fs.access_flags().is_internal()) {
3304 // Only look at injected fields
3305 continue;
3306 }
3307 if (fs.name() == name() && fs.signature() == signature()) {
3308 return fs.offset();
3309 }
3310 }
3311 ResourceMark rm;
3312 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string());
3313 fatal("Invalid layout of preloaded class");
3314 return -1;
3315 }
3317 void javaClasses_init() {
3318 JavaClasses::compute_offsets();
3319 JavaClasses::check_offsets();
3320 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3321 }