Wed, 02 May 2012 13:21:36 -0400
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
Summary: Change the _host_klass to be conditionally created embedded instanceKlass field.
Reviewed-by: jrose, coleenp, dholmes
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
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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 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
147 // Create the String object first, so there's a chance that the String
148 // and the char array it points to end up in the same cache line.
149 oop obj;
150 if (tenured) {
151 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
152 } else {
153 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
154 }
156 // Create the char array. The String object must be handlized here
157 // because GC can happen as a result of the allocation attempt.
158 Handle h_obj(THREAD, obj);
159 typeArrayOop buffer;
160 if (tenured) {
161 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
162 } else {
163 buffer = oopFactory::new_charArray(length, CHECK_NH);
164 }
166 // Point the String at the char array
167 obj = h_obj();
168 set_value(obj, buffer);
169 // No need to zero the offset, allocation zero'ed the entire String object
170 assert(offset(obj) == 0, "initial String offset should be zero");
171 //set_offset(obj, 0);
172 set_count(obj, length);
174 return h_obj;
175 }
177 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
178 Handle h_obj = basic_create(length, tenured, CHECK_NH);
179 typeArrayOop buffer = value(h_obj());
180 for (int index = 0; index < length; index++) {
181 buffer->char_at_put(index, unicode[index]);
182 }
183 return h_obj;
184 }
186 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
187 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
188 }
190 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
191 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
192 }
194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
195 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
196 return h_obj();
197 }
199 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
200 if (utf8_str == NULL) {
201 return Handle();
202 }
203 int length = UTF8::unicode_length(utf8_str);
204 Handle h_obj = basic_create(length, false, CHECK_NH);
205 if (length > 0) {
206 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
207 }
208 return h_obj;
209 }
211 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
212 Handle h_obj = create_from_str(utf8_str, CHECK_0);
213 return h_obj();
214 }
216 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
217 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
218 Handle h_obj = basic_create(length, false, CHECK_NH);
219 if (length > 0) {
220 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
221 }
222 return h_obj;
223 }
225 // Converts a C string to a Java String based on current encoding
226 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
227 assert(str != NULL, "bad arguments");
229 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
230 static to_java_string_fn_t _to_java_string_fn = NULL;
232 if (_to_java_string_fn == NULL) {
233 void *lib_handle = os::native_java_library();
234 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
235 if (_to_java_string_fn == NULL) {
236 fatal("NewStringPlatform missing");
237 }
238 }
240 jstring js = NULL;
241 { JavaThread* thread = (JavaThread*)THREAD;
242 assert(thread->is_Java_thread(), "must be java thread");
243 HandleMark hm(thread);
244 ThreadToNativeFromVM ttn(thread);
245 js = (_to_java_string_fn)(thread->jni_environment(), str);
246 }
247 return Handle(THREAD, JNIHandles::resolve(js));
248 }
250 // Converts a Java String to a native C string that can be used for
251 // native OS calls.
252 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
254 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
255 static to_platform_string_fn_t _to_platform_string_fn = NULL;
257 if (_to_platform_string_fn == NULL) {
258 void *lib_handle = os::native_java_library();
259 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
260 if (_to_platform_string_fn == NULL) {
261 fatal("GetStringPlatformChars missing");
262 }
263 }
265 char *native_platform_string;
266 { JavaThread* thread = (JavaThread*)THREAD;
267 assert(thread->is_Java_thread(), "must be java thread");
268 JNIEnv *env = thread->jni_environment();
269 jstring js = (jstring) JNIHandles::make_local(env, java_string());
270 bool is_copy;
271 HandleMark hm(thread);
272 ThreadToNativeFromVM ttn(thread);
273 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
274 assert(is_copy == JNI_TRUE, "is_copy value changed");
275 JNIHandles::destroy_local(js);
276 }
277 return native_platform_string;
278 }
280 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
281 oop obj = java_string();
282 // Typical usage is to convert all '/' to '.' in string.
283 typeArrayOop value = java_lang_String::value(obj);
284 int offset = java_lang_String::offset(obj);
285 int length = java_lang_String::length(obj);
287 // First check if any from_char exist
288 int index; // Declared outside, used later
289 for (index = 0; index < length; index++) {
290 if (value->char_at(index + offset) == from_char) {
291 break;
292 }
293 }
294 if (index == length) {
295 // No from_char, so do not copy.
296 return java_string;
297 }
299 // Create new UNICODE buffer. Must handlize value because GC
300 // may happen during String and char array creation.
301 typeArrayHandle h_value(THREAD, value);
302 Handle string = basic_create(length, false, CHECK_NH);
304 typeArrayOop from_buffer = h_value();
305 typeArrayOop to_buffer = java_lang_String::value(string());
307 // Copy contents
308 for (index = 0; index < length; index++) {
309 jchar c = from_buffer->char_at(index + offset);
310 if (c == from_char) {
311 c = to_char;
312 }
313 to_buffer->char_at_put(index, c);
314 }
315 return string;
316 }
318 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
319 typeArrayOop value = java_lang_String::value(java_string);
320 int offset = java_lang_String::offset(java_string);
321 length = java_lang_String::length(java_string);
323 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
324 for (int index = 0; index < length; index++) {
325 result[index] = value->char_at(index + offset);
326 }
327 return result;
328 }
330 unsigned int java_lang_String::hash_string(oop java_string) {
331 typeArrayOop value = java_lang_String::value(java_string);
332 int offset = java_lang_String::offset(java_string);
333 int length = java_lang_String::length(java_string);
335 if (length == 0) return 0;
336 return hash_string(value->char_at_addr(offset), length);
337 }
339 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
340 oop obj = java_string();
341 typeArrayOop value = java_lang_String::value(obj);
342 int offset = java_lang_String::offset(obj);
343 int length = java_lang_String::length(obj);
344 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
345 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
346 return sym;
347 }
349 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
350 typeArrayOop value = java_lang_String::value(java_string);
351 int offset = java_lang_String::offset(java_string);
352 int length = java_lang_String::length(java_string);
353 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
354 return SymbolTable::probe_unicode(base, length);
355 }
358 int java_lang_String::utf8_length(oop java_string) {
359 typeArrayOop value = java_lang_String::value(java_string);
360 int offset = java_lang_String::offset(java_string);
361 int length = java_lang_String::length(java_string);
362 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
363 return UNICODE::utf8_length(position, length);
364 }
366 char* java_lang_String::as_utf8_string(oop java_string) {
367 typeArrayOop value = java_lang_String::value(java_string);
368 int offset = java_lang_String::offset(java_string);
369 int length = java_lang_String::length(java_string);
370 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
371 return UNICODE::as_utf8(position, length);
372 }
374 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
375 typeArrayOop value = java_lang_String::value(java_string);
376 int offset = java_lang_String::offset(java_string);
377 int length = java_lang_String::length(java_string);
378 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
379 return UNICODE::as_utf8(position, length, buf, buflen);
380 }
382 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
383 typeArrayOop value = java_lang_String::value(java_string);
384 int offset = java_lang_String::offset(java_string);
385 int length = java_lang_String::length(java_string);
386 assert(start + len <= length, "just checking");
387 jchar* position = value->char_at_addr(offset + start);
388 return UNICODE::as_utf8(position, len);
389 }
391 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
392 assert(SharedSkipVerify ||
393 java_string->klass() == SystemDictionary::String_klass(),
394 "must be java_string");
395 typeArrayOop value = java_lang_String::value(java_string);
396 int offset = java_lang_String::offset(java_string);
397 int length = java_lang_String::length(java_string);
398 if (length != len) {
399 return false;
400 }
401 for (int i = 0; i < len; i++) {
402 if (value->char_at(i + offset) != chars[i]) {
403 return false;
404 }
405 }
406 return true;
407 }
409 void java_lang_String::print(Handle java_string, outputStream* st) {
410 oop obj = java_string();
411 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
412 typeArrayOop value = java_lang_String::value(obj);
413 int offset = java_lang_String::offset(obj);
414 int length = java_lang_String::length(obj);
416 int end = MIN2(length, 100);
417 if (value == NULL) {
418 // This can happen if, e.g., printing a String
419 // object before its initializer has been called
420 st->print_cr("NULL");
421 } else {
422 st->print("\"");
423 for (int index = 0; index < length; index++) {
424 st->print("%c", value->char_at(index + offset));
425 }
426 st->print("\"");
427 }
428 }
430 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
431 Handle mirror (THREAD, fd->field_holder()->java_mirror());
432 assert(mirror.not_null() && fd->is_static(), "just checking");
433 if (fd->has_initial_value()) {
434 BasicType t = fd->field_type();
435 switch (t) {
436 case T_BYTE:
437 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
438 break;
439 case T_BOOLEAN:
440 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
441 break;
442 case T_CHAR:
443 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
444 break;
445 case T_SHORT:
446 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
447 break;
448 case T_INT:
449 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
450 break;
451 case T_FLOAT:
452 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
453 break;
454 case T_DOUBLE:
455 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
456 break;
457 case T_LONG:
458 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
459 break;
460 case T_OBJECT:
461 {
462 #ifdef ASSERT
463 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
464 assert(fd->signature() == sym, "just checking");
465 #endif
466 oop string = fd->string_initial_value(CHECK);
467 mirror()->obj_field_put(fd->offset(), string);
468 }
469 break;
470 default:
471 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
472 "Illegal ConstantValue attribute in class file");
473 }
474 }
475 }
478 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
479 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
481 if (k->oop_is_instance()) {
482 // During bootstrap, java.lang.Class wasn't loaded so static field
483 // offsets were computed without the size added it. Go back and
484 // update all the static field offsets to included the size.
485 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
486 if (fs.access_flags().is_static()) {
487 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
488 fs.set_offset(real_offset);
489 }
490 }
491 }
492 create_mirror(k, CHECK);
493 }
495 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
496 assert(k->java_mirror() == NULL, "should only assign mirror once");
497 // Use this moment of initialization to cache modifier_flags also,
498 // to support Class.getModifiers(). Instance classes recalculate
499 // the cached flags after the class file is parsed, but before the
500 // class is put into the system dictionary.
501 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
502 k->set_modifier_flags(computed_modifiers);
503 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
504 // Allocate mirror (java.lang.Class instance)
505 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
507 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
508 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
510 // It might also have a component mirror. This mirror must already exist.
511 if (k->oop_is_javaArray()) {
512 Handle comp_mirror;
513 if (k->oop_is_typeArray()) {
514 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
515 comp_mirror = Universe::java_mirror(type);
516 assert(comp_mirror.not_null(), "must have primitive mirror");
517 } else if (k->oop_is_objArray()) {
518 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
519 if (element_klass != NULL
520 && (Klass::cast(element_klass)->oop_is_instance() ||
521 Klass::cast(element_klass)->oop_is_javaArray())) {
522 comp_mirror = Klass::cast(element_klass)->java_mirror();
523 assert(comp_mirror.not_null(), "must have element mirror");
524 }
525 // else some object array internal to the VM, like systemObjArrayKlassObj
526 }
527 if (comp_mirror.not_null()) {
528 // Two-way link between the array klass and its component mirror:
529 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
530 set_array_klass(comp_mirror(), k->as_klassOop());
531 }
532 } else if (k->oop_is_instance()) {
533 // Initialize static fields
534 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
535 }
536 return mirror();
537 } else {
538 return NULL;
539 }
540 }
544 int java_lang_Class::oop_size(oop java_class) {
545 assert(_oop_size_offset != 0, "must be set");
546 return java_class->int_field(_oop_size_offset);
547 }
548 void java_lang_Class::set_oop_size(oop java_class, int size) {
549 assert(_oop_size_offset != 0, "must be set");
550 java_class->int_field_put(_oop_size_offset, size);
551 }
552 int java_lang_Class::static_oop_field_count(oop java_class) {
553 assert(_static_oop_field_count_offset != 0, "must be set");
554 return java_class->int_field(_static_oop_field_count_offset);
555 }
556 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
557 assert(_static_oop_field_count_offset != 0, "must be set");
558 java_class->int_field_put(_static_oop_field_count_offset, size);
559 }
561 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
562 // This should be improved by adding a field at the Java level or by
563 // introducing a new VM klass (see comment in ClassFileParser)
564 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
565 if (type != T_VOID) {
566 klassOop aklass = Universe::typeArrayKlassObj(type);
567 assert(aklass != NULL, "correct bootstrap");
568 set_array_klass(java_class, aklass);
569 }
570 #ifdef ASSERT
571 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
572 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
573 #endif
574 return java_class;
575 }
578 klassOop java_lang_Class::as_klassOop(oop java_class) {
579 //%note memory_2
580 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
581 klassOop k = klassOop(java_class->obj_field(_klass_offset));
582 assert(k == NULL || k->is_klass(), "type check");
583 return k;
584 }
587 void java_lang_Class::set_klass(oop java_class, klassOop klass) {
588 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
589 java_class->obj_field_put(_klass_offset, klass);
590 }
593 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
594 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
595 Symbol* name = NULL;
596 bool is_instance = false;
597 if (is_primitive(java_class)) {
598 name = vmSymbols::type_signature(primitive_type(java_class));
599 } else {
600 klassOop k = as_klassOop(java_class);
601 is_instance = Klass::cast(k)->oop_is_instance();
602 name = Klass::cast(k)->name();
603 }
604 if (name == NULL) {
605 st->print("<null>");
606 return;
607 }
608 if (is_instance) st->print("L");
609 st->write((char*) name->base(), (int) name->utf8_length());
610 if (is_instance) st->print(";");
611 }
613 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
614 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
615 Symbol* name;
616 if (is_primitive(java_class)) {
617 name = vmSymbols::type_signature(primitive_type(java_class));
618 // Because this can create a new symbol, the caller has to decrement
619 // the refcount, so make adjustment here and below for symbols returned
620 // that are not created or incremented due to a successful lookup.
621 name->increment_refcount();
622 } else {
623 klassOop k = as_klassOop(java_class);
624 if (!Klass::cast(k)->oop_is_instance()) {
625 name = Klass::cast(k)->name();
626 name->increment_refcount();
627 } else {
628 ResourceMark rm;
629 const char* sigstr = Klass::cast(k)->signature_name();
630 int siglen = (int) strlen(sigstr);
631 if (!intern_if_not_found) {
632 name = SymbolTable::probe(sigstr, siglen);
633 } else {
634 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
635 }
636 }
637 }
638 return name;
639 }
642 klassOop java_lang_Class::array_klass(oop java_class) {
643 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
644 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
645 return k;
646 }
649 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
650 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
651 java_class->obj_field_put(_array_klass_offset, klass);
652 }
655 methodOop java_lang_Class::resolved_constructor(oop java_class) {
656 oop constructor = java_class->obj_field(_resolved_constructor_offset);
657 assert(constructor == NULL || constructor->is_method(), "should be method");
658 return methodOop(constructor);
659 }
662 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
663 assert(constructor->is_method(), "should be method");
664 java_class->obj_field_put(_resolved_constructor_offset, constructor);
665 }
668 bool java_lang_Class::is_primitive(oop java_class) {
669 // should assert:
670 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
671 klassOop k = klassOop(java_class->obj_field(_klass_offset));
672 return k == NULL;
673 }
676 BasicType java_lang_Class::primitive_type(oop java_class) {
677 assert(java_lang_Class::is_primitive(java_class), "just checking");
678 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
679 BasicType type = T_VOID;
680 if (ak != NULL) {
681 // Note: create_basic_type_mirror above initializes ak to a non-null value.
682 type = arrayKlass::cast(ak)->element_type();
683 } else {
684 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
685 }
686 assert(Universe::java_mirror(type) == java_class, "must be consistent");
687 return type;
688 }
690 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
691 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
692 if (is_primitive(java_class)) {
693 if (reference_klass != NULL)
694 (*reference_klass) = NULL;
695 return primitive_type(java_class);
696 } else {
697 if (reference_klass != NULL)
698 (*reference_klass) = as_klassOop(java_class);
699 return T_OBJECT;
700 }
701 }
704 oop java_lang_Class::primitive_mirror(BasicType t) {
705 oop mirror = Universe::java_mirror(t);
706 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
707 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
708 return mirror;
709 }
711 bool java_lang_Class::offsets_computed = false;
712 int java_lang_Class::classRedefinedCount_offset = -1;
714 void java_lang_Class::compute_offsets() {
715 assert(!offsets_computed, "offsets should be initialized only once");
716 offsets_computed = true;
718 klassOop klass_oop = SystemDictionary::Class_klass();
719 // The classRedefinedCount field is only present starting in 1.5,
720 // so don't go fatal.
721 compute_optional_offset(classRedefinedCount_offset,
722 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
724 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
725 }
727 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
728 if (!JDK_Version::is_gte_jdk15x_version()
729 || classRedefinedCount_offset == -1) {
730 // The classRedefinedCount field is only present starting in 1.5.
731 // If we don't have an offset for it then just return -1 as a marker.
732 return -1;
733 }
735 return the_class_mirror->int_field(classRedefinedCount_offset);
736 }
738 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
739 if (!JDK_Version::is_gte_jdk15x_version()
740 || classRedefinedCount_offset == -1) {
741 // The classRedefinedCount field is only present starting in 1.5.
742 // If we don't have an offset for it then nothing to set.
743 return;
744 }
746 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
747 }
750 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
751 // platform thread structure, and a eetop offset which was used for thread
752 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
753 // merged, so in the HotSpot VM we just use the eetop field for the thread
754 // instead of the privateInfo_offset.
755 //
756 // Note: The stackSize field is only present starting in 1.4.
758 int java_lang_Thread::_name_offset = 0;
759 int java_lang_Thread::_group_offset = 0;
760 int java_lang_Thread::_contextClassLoader_offset = 0;
761 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
762 int java_lang_Thread::_priority_offset = 0;
763 int java_lang_Thread::_eetop_offset = 0;
764 int java_lang_Thread::_daemon_offset = 0;
765 int java_lang_Thread::_stillborn_offset = 0;
766 int java_lang_Thread::_stackSize_offset = 0;
767 int java_lang_Thread::_tid_offset = 0;
768 int java_lang_Thread::_thread_status_offset = 0;
769 int java_lang_Thread::_park_blocker_offset = 0;
770 int java_lang_Thread::_park_event_offset = 0 ;
773 void java_lang_Thread::compute_offsets() {
774 assert(_group_offset == 0, "offsets should be initialized only once");
776 klassOop k = SystemDictionary::Thread_klass();
777 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
778 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
779 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
780 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
781 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
782 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
783 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
784 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
785 // The stackSize field is only present starting in 1.4, so don't go fatal.
786 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
787 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
788 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
789 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
790 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
791 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
792 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
793 vmSymbols::long_signature());
794 }
797 JavaThread* java_lang_Thread::thread(oop java_thread) {
798 return (JavaThread*)java_thread->address_field(_eetop_offset);
799 }
802 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
803 java_thread->address_field_put(_eetop_offset, (address)thread);
804 }
807 typeArrayOop java_lang_Thread::name(oop java_thread) {
808 oop name = java_thread->obj_field(_name_offset);
809 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
810 return typeArrayOop(name);
811 }
814 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
815 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
816 java_thread->obj_field_put(_name_offset, name);
817 }
820 ThreadPriority java_lang_Thread::priority(oop java_thread) {
821 return (ThreadPriority)java_thread->int_field(_priority_offset);
822 }
825 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
826 java_thread->int_field_put(_priority_offset, priority);
827 }
830 oop java_lang_Thread::threadGroup(oop java_thread) {
831 return java_thread->obj_field(_group_offset);
832 }
835 bool java_lang_Thread::is_stillborn(oop java_thread) {
836 return java_thread->bool_field(_stillborn_offset) != 0;
837 }
840 // We never have reason to turn the stillborn bit off
841 void java_lang_Thread::set_stillborn(oop java_thread) {
842 java_thread->bool_field_put(_stillborn_offset, true);
843 }
846 bool java_lang_Thread::is_alive(oop java_thread) {
847 JavaThread* thr = java_lang_Thread::thread(java_thread);
848 return (thr != NULL);
849 }
852 bool java_lang_Thread::is_daemon(oop java_thread) {
853 return java_thread->bool_field(_daemon_offset) != 0;
854 }
857 void java_lang_Thread::set_daemon(oop java_thread) {
858 java_thread->bool_field_put(_daemon_offset, true);
859 }
861 oop java_lang_Thread::context_class_loader(oop java_thread) {
862 return java_thread->obj_field(_contextClassLoader_offset);
863 }
865 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
866 return java_thread->obj_field(_inheritedAccessControlContext_offset);
867 }
870 jlong java_lang_Thread::stackSize(oop java_thread) {
871 // The stackSize field is only present starting in 1.4
872 if (_stackSize_offset > 0) {
873 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
874 return java_thread->long_field(_stackSize_offset);
875 } else {
876 return 0;
877 }
878 }
880 // Write the thread status value to threadStatus field in java.lang.Thread java class.
881 void java_lang_Thread::set_thread_status(oop java_thread,
882 java_lang_Thread::ThreadStatus status) {
883 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
884 // The threadStatus is only present starting in 1.5
885 if (_thread_status_offset > 0) {
886 java_thread->int_field_put(_thread_status_offset, status);
887 }
888 }
890 // Read thread status value from threadStatus field in java.lang.Thread java class.
891 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
892 assert(Thread::current()->is_VM_thread() ||
893 JavaThread::current()->thread_state() == _thread_in_vm,
894 "Java Thread is not running in vm");
895 // The threadStatus is only present starting in 1.5
896 if (_thread_status_offset > 0) {
897 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
898 } else {
899 // All we can easily figure out is if it is alive, but that is
900 // enough info for a valid unknown status.
901 // These aren't restricted to valid set ThreadStatus values, so
902 // use JVMTI values and cast.
903 JavaThread* thr = java_lang_Thread::thread(java_thread);
904 if (thr == NULL) {
905 // the thread hasn't run yet or is in the process of exiting
906 return NEW;
907 }
908 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
909 }
910 }
913 jlong java_lang_Thread::thread_id(oop java_thread) {
914 // The thread ID field is only present starting in 1.5
915 if (_tid_offset > 0) {
916 return java_thread->long_field(_tid_offset);
917 } else {
918 return 0;
919 }
920 }
922 oop java_lang_Thread::park_blocker(oop java_thread) {
923 assert(JDK_Version::current().supports_thread_park_blocker() &&
924 _park_blocker_offset != 0, "Must support parkBlocker field");
926 if (_park_blocker_offset > 0) {
927 return java_thread->obj_field(_park_blocker_offset);
928 }
930 return NULL;
931 }
933 jlong java_lang_Thread::park_event(oop java_thread) {
934 if (_park_event_offset > 0) {
935 return java_thread->long_field(_park_event_offset);
936 }
937 return 0;
938 }
940 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
941 if (_park_event_offset > 0) {
942 java_thread->long_field_put(_park_event_offset, ptr);
943 return true;
944 }
945 return false;
946 }
949 const char* java_lang_Thread::thread_status_name(oop java_thread) {
950 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
951 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
952 switch (status) {
953 case NEW : return "NEW";
954 case RUNNABLE : return "RUNNABLE";
955 case SLEEPING : return "TIMED_WAITING (sleeping)";
956 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
957 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
958 case PARKED : return "WAITING (parking)";
959 case PARKED_TIMED : return "TIMED_WAITING (parking)";
960 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
961 case TERMINATED : return "TERMINATED";
962 default : return "UNKNOWN";
963 };
964 }
965 int java_lang_ThreadGroup::_parent_offset = 0;
966 int java_lang_ThreadGroup::_name_offset = 0;
967 int java_lang_ThreadGroup::_threads_offset = 0;
968 int java_lang_ThreadGroup::_groups_offset = 0;
969 int java_lang_ThreadGroup::_maxPriority_offset = 0;
970 int java_lang_ThreadGroup::_destroyed_offset = 0;
971 int java_lang_ThreadGroup::_daemon_offset = 0;
972 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
973 int java_lang_ThreadGroup::_nthreads_offset = 0;
974 int java_lang_ThreadGroup::_ngroups_offset = 0;
976 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
977 assert(java_thread_group->is_oop(), "thread group must be oop");
978 return java_thread_group->obj_field(_parent_offset);
979 }
981 // ("name as oop" accessor is not necessary)
983 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
984 oop name = java_thread_group->obj_field(_name_offset);
985 // ThreadGroup.name can be null
986 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
987 }
989 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
990 assert(java_thread_group->is_oop(), "thread group must be oop");
991 return java_thread_group->int_field(_nthreads_offset);
992 }
994 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
995 oop threads = java_thread_group->obj_field(_threads_offset);
996 assert(threads != NULL, "threadgroups should have threads");
997 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
998 return objArrayOop(threads);
999 }
1001 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1002 assert(java_thread_group->is_oop(), "thread group must be oop");
1003 return java_thread_group->int_field(_ngroups_offset);
1004 }
1006 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1007 oop groups = java_thread_group->obj_field(_groups_offset);
1008 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1009 return objArrayOop(groups);
1010 }
1012 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1013 assert(java_thread_group->is_oop(), "thread group must be oop");
1014 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1015 }
1017 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1018 assert(java_thread_group->is_oop(), "thread group must be oop");
1019 return java_thread_group->bool_field(_destroyed_offset) != 0;
1020 }
1022 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1023 assert(java_thread_group->is_oop(), "thread group must be oop");
1024 return java_thread_group->bool_field(_daemon_offset) != 0;
1025 }
1027 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1028 assert(java_thread_group->is_oop(), "thread group must be oop");
1029 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1030 }
1032 void java_lang_ThreadGroup::compute_offsets() {
1033 assert(_parent_offset == 0, "offsets should be initialized only once");
1035 klassOop k = SystemDictionary::ThreadGroup_klass();
1037 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1038 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1039 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1040 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1041 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1042 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1043 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1044 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1045 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1046 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1047 }
1049 oop java_lang_Throwable::unassigned_stacktrace() {
1050 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1051 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1052 if (UseCompressedOops) {
1053 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1054 } else {
1055 return oopDesc::load_decode_heap_oop((oop*)addr);
1056 }
1057 }
1059 oop java_lang_Throwable::backtrace(oop throwable) {
1060 return throwable->obj_field_acquire(backtrace_offset);
1061 }
1064 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1065 throwable->release_obj_field_put(backtrace_offset, value);
1066 }
1069 oop java_lang_Throwable::message(oop throwable) {
1070 return throwable->obj_field(detailMessage_offset);
1071 }
1074 oop java_lang_Throwable::message(Handle throwable) {
1075 return throwable->obj_field(detailMessage_offset);
1076 }
1079 void java_lang_Throwable::set_message(oop throwable, oop value) {
1080 throwable->obj_field_put(detailMessage_offset, value);
1081 }
1084 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1085 throwable->obj_field_put(stackTrace_offset, st_element_array);
1086 }
1088 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1089 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1090 set_stacktrace(throwable, NULL);
1091 }
1094 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1095 ResourceMark rm;
1096 klassOop k = throwable->klass();
1097 assert(k != NULL, "just checking");
1098 st->print("%s", instanceKlass::cast(k)->external_name());
1099 oop msg = message(throwable);
1100 if (msg != NULL) {
1101 st->print(": %s", java_lang_String::as_utf8_string(msg));
1102 }
1103 }
1106 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1107 ResourceMark rm;
1108 klassOop k = throwable->klass();
1109 assert(k != NULL, "just checking");
1110 st->print("%s", instanceKlass::cast(k)->external_name());
1111 oop msg = message(throwable);
1112 if (msg != NULL) {
1113 st->print(": %s", java_lang_String::as_utf8_string(msg));
1114 }
1115 }
1117 // Print stack trace element to resource allocated buffer
1118 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1119 // Get strings and string lengths
1120 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1121 const char* klass_name = klass->external_name();
1122 int buf_len = (int)strlen(klass_name);
1123 char* source_file_name;
1124 if (klass->source_file_name() == NULL) {
1125 source_file_name = NULL;
1126 } else {
1127 source_file_name = klass->source_file_name()->as_C_string();
1128 buf_len += (int)strlen(source_file_name);
1129 }
1130 char* method_name = method->name()->as_C_string();
1131 buf_len += (int)strlen(method_name);
1133 // Allocate temporary buffer with extra space for formatting and line number
1134 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1136 // Print stack trace line in buffer
1137 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1138 if (method->is_native()) {
1139 strcat(buf, "(Native Method)");
1140 } else {
1141 int line_number = method->line_number_from_bci(bci);
1142 if (source_file_name != NULL && (line_number != -1)) {
1143 // Sourcename and linenumber
1144 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1145 } else if (source_file_name != NULL) {
1146 // Just sourcename
1147 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1148 } else {
1149 // Neither soucename and linenumber
1150 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1151 }
1152 nmethod* nm = method->code();
1153 if (WizardMode && nm != NULL) {
1154 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1155 }
1156 }
1158 return buf;
1159 }
1162 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1163 ResourceMark rm;
1164 char* buf = print_stack_element_to_buffer(method, bci);
1165 print_to_stream(stream, buf);
1166 }
1168 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1169 ResourceMark rm;
1170 char* buf = print_stack_element_to_buffer(method, bci);
1171 st->print_cr("%s", buf);
1172 }
1174 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1175 if (stream.is_null()) {
1176 tty->print_cr("%s", str);
1177 } else {
1178 EXCEPTION_MARK;
1179 JavaValue result(T_VOID);
1180 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1181 if (!HAS_PENDING_EXCEPTION) {
1182 JavaCalls::call_virtual(&result,
1183 stream,
1184 KlassHandle(THREAD, stream->klass()),
1185 vmSymbols::println_name(),
1186 vmSymbols::char_array_void_signature(),
1187 arg,
1188 THREAD);
1189 }
1190 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1191 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1192 }
1194 }
1197 const char* java_lang_Throwable::no_stack_trace_message() {
1198 return "\t<<no stack trace available>>";
1199 }
1202 // Currently used only for exceptions occurring during startup
1203 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1204 Thread *THREAD = Thread::current();
1205 Handle h_throwable(THREAD, throwable);
1206 while (h_throwable.not_null()) {
1207 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1208 if (result.is_null()) {
1209 st->print_cr(no_stack_trace_message());
1210 return;
1211 }
1213 while (result.not_null()) {
1214 objArrayHandle methods (THREAD,
1215 objArrayOop(result->obj_at(trace_methods_offset)));
1216 typeArrayHandle bcis (THREAD,
1217 typeArrayOop(result->obj_at(trace_bcis_offset)));
1219 if (methods.is_null() || bcis.is_null()) {
1220 st->print_cr(no_stack_trace_message());
1221 return;
1222 }
1224 int length = methods()->length();
1225 for (int index = 0; index < length; index++) {
1226 methodOop method = methodOop(methods()->obj_at(index));
1227 if (method == NULL) goto handle_cause;
1228 int bci = bcis->ushort_at(index);
1229 print_stack_element(st, method, bci);
1230 }
1231 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1232 }
1233 handle_cause:
1234 {
1235 EXCEPTION_MARK;
1236 JavaValue result(T_OBJECT);
1237 JavaCalls::call_virtual(&result,
1238 h_throwable,
1239 KlassHandle(THREAD, h_throwable->klass()),
1240 vmSymbols::getCause_name(),
1241 vmSymbols::void_throwable_signature(),
1242 THREAD);
1243 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1244 if (HAS_PENDING_EXCEPTION) {
1245 CLEAR_PENDING_EXCEPTION;
1246 h_throwable = Handle();
1247 } else {
1248 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1249 if (h_throwable.not_null()) {
1250 st->print("Caused by: ");
1251 print(h_throwable, st);
1252 st->cr();
1253 }
1254 }
1255 }
1256 }
1257 }
1260 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1261 // Note: this is no longer used in Merlin, but we support it for compatibility.
1262 Thread *thread = Thread::current();
1263 Handle stream(thread, print_stream);
1264 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1265 if (result.is_null()) {
1266 print_to_stream(stream, no_stack_trace_message());
1267 return;
1268 }
1270 while (result.not_null()) {
1271 objArrayHandle methods (thread,
1272 objArrayOop(result->obj_at(trace_methods_offset)));
1273 typeArrayHandle bcis (thread,
1274 typeArrayOop(result->obj_at(trace_bcis_offset)));
1276 if (methods.is_null() || bcis.is_null()) {
1277 print_to_stream(stream, no_stack_trace_message());
1278 return;
1279 }
1281 int length = methods()->length();
1282 for (int index = 0; index < length; index++) {
1283 methodOop method = methodOop(methods()->obj_at(index));
1284 if (method == NULL) return;
1285 int bci = bcis->ushort_at(index);
1286 print_stack_element(stream, method, bci);
1287 }
1288 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1289 }
1290 }
1292 // This class provides a simple wrapper over the internal structure of
1293 // exception backtrace to insulate users of the backtrace from needing
1294 // to know what it looks like.
1295 class BacktraceBuilder: public StackObj {
1296 private:
1297 Handle _backtrace;
1298 objArrayOop _head;
1299 objArrayOop _methods;
1300 typeArrayOop _bcis;
1301 int _index;
1302 No_Safepoint_Verifier _nsv;
1304 public:
1306 enum {
1307 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1308 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1309 trace_next_offset = java_lang_Throwable::trace_next_offset,
1310 trace_size = java_lang_Throwable::trace_size,
1311 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1312 };
1314 // constructor for new backtrace
1315 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1316 expand(CHECK);
1317 _backtrace = _head;
1318 _index = 0;
1319 }
1321 void expand(TRAPS) {
1322 objArrayHandle old_head(THREAD, _head);
1323 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1325 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1326 objArrayHandle new_head(THREAD, head);
1328 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1329 objArrayHandle new_methods(THREAD, methods);
1331 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1332 typeArrayHandle new_bcis(THREAD, bcis);
1334 if (!old_head.is_null()) {
1335 old_head->obj_at_put(trace_next_offset, new_head());
1336 }
1337 new_head->obj_at_put(trace_methods_offset, new_methods());
1338 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1340 _head = new_head();
1341 _methods = new_methods();
1342 _bcis = new_bcis();
1343 _index = 0;
1344 }
1346 oop backtrace() {
1347 return _backtrace();
1348 }
1350 inline void push(methodOop method, int bci, TRAPS) {
1351 // Smear the -1 bci to 0 since the array only holds unsigned
1352 // shorts. The later line number lookup would just smear the -1
1353 // to a 0 even if it could be recorded.
1354 if (bci == SynchronizationEntryBCI) bci = 0;
1355 assert(bci == (jushort)bci, "doesn't fit");
1357 if (_index >= trace_chunk_size) {
1358 methodHandle mhandle(THREAD, method);
1359 expand(CHECK);
1360 method = mhandle();
1361 }
1363 _methods->obj_at_put(_index, method);
1364 _bcis->ushort_at_put(_index, bci);
1365 _index++;
1366 }
1368 methodOop current_method() {
1369 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1370 return methodOop(_methods->obj_at(_index));
1371 }
1373 jushort current_bci() {
1374 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1375 return _bcis->ushort_at(_index);
1376 }
1377 };
1380 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1381 if (!StackTraceInThrowable) return;
1382 ResourceMark rm(THREAD);
1384 // Start out by clearing the backtrace for this object, in case the VM
1385 // runs out of memory while allocating the stack trace
1386 set_backtrace(throwable(), NULL);
1387 if (JDK_Version::is_gte_jdk14x_version()) {
1388 // New since 1.4, clear lazily constructed Java level stacktrace if
1389 // refilling occurs
1390 // This is unnecessary in 1.7+ but harmless
1391 clear_stacktrace(throwable());
1392 }
1394 int max_depth = MaxJavaStackTraceDepth;
1395 JavaThread* thread = (JavaThread*)THREAD;
1396 BacktraceBuilder bt(CHECK);
1398 // If there is no Java frame just return the method that was being called
1399 // with bci 0
1400 if (!thread->has_last_Java_frame()) {
1401 if (max_depth >= 1 && method() != NULL) {
1402 bt.push(method(), 0, CHECK);
1403 set_backtrace(throwable(), bt.backtrace());
1404 }
1405 return;
1406 }
1408 // Instead of using vframe directly, this version of fill_in_stack_trace
1409 // basically handles everything by hand. This significantly improved the
1410 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1411 // See bug 6333838 for more details.
1412 // The "ASSERT" here is to verify this method generates the exactly same stack
1413 // trace as utilizing vframe.
1414 #ifdef ASSERT
1415 vframeStream st(thread);
1416 methodHandle st_method(THREAD, st.method());
1417 #endif
1418 int total_count = 0;
1419 RegisterMap map(thread, false);
1420 int decode_offset = 0;
1421 nmethod* nm = NULL;
1422 bool skip_fillInStackTrace_check = false;
1423 bool skip_throwableInit_check = false;
1425 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1426 methodOop method = NULL;
1427 int bci = 0;
1429 // Compiled java method case.
1430 if (decode_offset != 0) {
1431 DebugInfoReadStream stream(nm, decode_offset);
1432 decode_offset = stream.read_int();
1433 method = (methodOop)nm->oop_at(stream.read_int());
1434 bci = stream.read_bci();
1435 } else {
1436 if (fr.is_first_frame()) break;
1437 address pc = fr.pc();
1438 if (fr.is_interpreted_frame()) {
1439 intptr_t bcx = fr.interpreter_frame_bcx();
1440 method = fr.interpreter_frame_method();
1441 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1442 fr = fr.sender(&map);
1443 } else {
1444 CodeBlob* cb = fr.cb();
1445 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1446 // but non nmethod
1447 fr = fr.sender(&map);
1448 if (cb == NULL || !cb->is_nmethod()) {
1449 continue;
1450 }
1451 nm = (nmethod*)cb;
1452 if (nm->method()->is_native()) {
1453 method = nm->method();
1454 bci = 0;
1455 } else {
1456 PcDesc* pd = nm->pc_desc_at(pc);
1457 decode_offset = pd->scope_decode_offset();
1458 // if decode_offset is not equal to 0, it will execute the
1459 // "compiled java method case" at the beginning of the loop.
1460 continue;
1461 }
1462 }
1463 }
1464 #ifdef ASSERT
1465 assert(st_method() == method && st.bci() == bci,
1466 "Wrong stack trace");
1467 st.next();
1468 // vframeStream::method isn't GC-safe so store off a copy
1469 // of the methodOop in case we GC.
1470 if (!st.at_end()) {
1471 st_method = st.method();
1472 }
1473 #endif
1475 // the format of the stacktrace will be:
1476 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1477 // - 0 or more <init> methods for the exception class (skipped)
1478 // - rest of the stack
1480 if (!skip_fillInStackTrace_check) {
1481 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1482 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1483 throwable->is_a(method->method_holder())) {
1484 continue;
1485 }
1486 else {
1487 skip_fillInStackTrace_check = true; // gone past them all
1488 }
1489 }
1490 if (!skip_throwableInit_check) {
1491 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1493 // skip <init> methods of the exception class and superclasses
1494 // This is simlar to classic VM.
1495 if (method->name() == vmSymbols::object_initializer_name() &&
1496 throwable->is_a(method->method_holder())) {
1497 continue;
1498 } else {
1499 // there are none or we've seen them all - either way stop checking
1500 skip_throwableInit_check = true;
1501 }
1502 }
1503 bt.push(method, bci, CHECK);
1504 total_count++;
1505 }
1507 // Put completed stack trace into throwable object
1508 set_backtrace(throwable(), bt.backtrace());
1509 }
1511 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1512 // No-op if stack trace is disabled
1513 if (!StackTraceInThrowable) {
1514 return;
1515 }
1517 // Disable stack traces for some preallocated out of memory errors
1518 if (!Universe::should_fill_in_stack_trace(throwable)) {
1519 return;
1520 }
1522 PRESERVE_EXCEPTION_MARK;
1524 JavaThread* thread = JavaThread::active();
1525 fill_in_stack_trace(throwable, method, thread);
1526 // ignore exceptions thrown during stack trace filling
1527 CLEAR_PENDING_EXCEPTION;
1528 }
1530 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1531 // Allocate stack trace - backtrace is created but not filled in
1533 // No-op if stack trace is disabled
1534 if (!StackTraceInThrowable) return;
1536 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1537 objArrayHandle backtrace (THREAD, h_oop);
1538 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1539 objArrayHandle methods (THREAD, m_oop);
1540 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1541 typeArrayHandle bcis(THREAD, b);
1543 // backtrace has space for one chunk (next is NULL)
1544 backtrace->obj_at_put(trace_methods_offset, methods());
1545 backtrace->obj_at_put(trace_bcis_offset, bcis());
1546 set_backtrace(throwable(), backtrace());
1547 }
1550 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1551 // Fill in stack trace into preallocated backtrace (no GC)
1553 // No-op if stack trace is disabled
1554 if (!StackTraceInThrowable) return;
1556 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1558 oop backtrace = java_lang_Throwable::backtrace(throwable());
1559 assert(backtrace != NULL, "backtrace not preallocated");
1561 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1562 objArrayOop methods = objArrayOop(m);
1563 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1565 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1566 typeArrayOop bcis = typeArrayOop(b);
1567 assert(bcis != NULL, "bci array not preallocated");
1569 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1571 JavaThread* thread = JavaThread::current();
1572 ResourceMark rm(thread);
1573 vframeStream st(thread);
1575 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1576 // methods as preallocated errors aren't created by "java" code.
1578 // fill in as much stack trace as possible
1579 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1580 int chunk_count = 0;
1582 for (;!st.at_end(); st.next()) {
1583 // Add entry and smear the -1 bci to 0 since the array only holds
1584 // unsigned shorts. The later line number lookup would just smear
1585 // the -1 to a 0 even if it could be recorded.
1586 int bci = st.bci();
1587 if (bci == SynchronizationEntryBCI) bci = 0;
1588 assert(bci == (jushort)bci, "doesn't fit");
1589 bcis->ushort_at_put(chunk_count, bci);
1590 methods->obj_at_put(chunk_count, st.method());
1592 chunk_count++;
1594 // Bail-out for deep stacks
1595 if (chunk_count >= max_chunks) break;
1596 }
1598 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1599 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1600 // can be removed in a JDK using this JVM version
1601 if (JDK_Version::is_gte_jdk17x_version()) {
1602 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1603 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1604 }
1606 }
1609 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1610 if (throwable == NULL) {
1611 THROW_0(vmSymbols::java_lang_NullPointerException());
1612 }
1613 objArrayOop chunk = objArrayOop(backtrace(throwable));
1614 int depth = 0;
1615 if (chunk != NULL) {
1616 // Iterate over chunks and count full ones
1617 while (true) {
1618 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1619 if (next == NULL) break;
1620 depth += trace_chunk_size;
1621 chunk = next;
1622 }
1623 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1624 // Count element in remaining partial chunk
1625 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1626 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1627 assert(methods != NULL && bcis != NULL, "sanity check");
1628 for (int i = 0; i < methods->length(); i++) {
1629 if (methods->obj_at(i) == NULL) break;
1630 depth++;
1631 }
1632 }
1633 return depth;
1634 }
1637 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1638 if (throwable == NULL) {
1639 THROW_0(vmSymbols::java_lang_NullPointerException());
1640 }
1641 if (index < 0) {
1642 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1643 }
1644 // Compute how many chunks to skip and index into actual chunk
1645 objArrayOop chunk = objArrayOop(backtrace(throwable));
1646 int skip_chunks = index / trace_chunk_size;
1647 int chunk_index = index % trace_chunk_size;
1648 while (chunk != NULL && skip_chunks > 0) {
1649 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1650 skip_chunks--;
1651 }
1652 if (chunk == NULL) {
1653 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1654 }
1655 // Get method,bci from chunk
1656 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1657 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1658 assert(methods != NULL && bcis != NULL, "sanity check");
1659 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1660 int bci = bcis->ushort_at(chunk_index);
1661 // Chunk can be partial full
1662 if (method.is_null()) {
1663 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1664 }
1666 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1667 return element;
1668 }
1670 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1671 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1672 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1674 // Allocate java.lang.StackTraceElement instance
1675 klassOop k = SystemDictionary::StackTraceElement_klass();
1676 assert(k != NULL, "must be loaded in 1.4+");
1677 instanceKlassHandle ik (THREAD, k);
1678 if (ik->should_be_initialized()) {
1679 ik->initialize(CHECK_0);
1680 }
1682 Handle element = ik->allocate_instance_handle(CHECK_0);
1683 // Fill in class name
1684 ResourceMark rm(THREAD);
1685 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1686 oop classname = StringTable::intern((char*) str, CHECK_0);
1687 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1688 // Fill in method name
1689 oop methodname = StringTable::intern(method->name(), CHECK_0);
1690 java_lang_StackTraceElement::set_methodName(element(), methodname);
1691 // Fill in source file name
1692 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1693 oop filename = StringTable::intern(source, CHECK_0);
1694 java_lang_StackTraceElement::set_fileName(element(), filename);
1695 // File in source line number
1696 int line_number;
1697 if (method->is_native()) {
1698 // Negative value different from -1 below, enabling Java code in
1699 // class java.lang.StackTraceElement to distinguish "native" from
1700 // "no LineNumberTable".
1701 line_number = -2;
1702 } else {
1703 // Returns -1 if no LineNumberTable, and otherwise actual line number
1704 line_number = method->line_number_from_bci(bci);
1705 }
1706 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1708 return element();
1709 }
1712 void java_lang_reflect_AccessibleObject::compute_offsets() {
1713 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1714 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1715 }
1717 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1718 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1719 return (jboolean) reflect->bool_field(override_offset);
1720 }
1722 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1723 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1724 reflect->bool_field_put(override_offset, (int) value);
1725 }
1727 void java_lang_reflect_Method::compute_offsets() {
1728 klassOop k = SystemDictionary::reflect_Method_klass();
1729 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1730 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1731 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1732 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1733 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1734 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1735 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1736 // The generic signature and annotations fields are only present in 1.5
1737 signature_offset = -1;
1738 annotations_offset = -1;
1739 parameter_annotations_offset = -1;
1740 annotation_default_offset = -1;
1741 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1742 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1743 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1744 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1745 }
1747 Handle java_lang_reflect_Method::create(TRAPS) {
1748 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1749 klassOop klass = SystemDictionary::reflect_Method_klass();
1750 // This class is eagerly initialized during VM initialization, since we keep a refence
1751 // to one of the methods
1752 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1753 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1754 }
1756 oop java_lang_reflect_Method::clazz(oop reflect) {
1757 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1758 return reflect->obj_field(clazz_offset);
1759 }
1761 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1762 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1763 reflect->obj_field_put(clazz_offset, value);
1764 }
1766 int java_lang_reflect_Method::slot(oop reflect) {
1767 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1768 return reflect->int_field(slot_offset);
1769 }
1771 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1772 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1773 reflect->int_field_put(slot_offset, value);
1774 }
1776 oop java_lang_reflect_Method::name(oop method) {
1777 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1778 return method->obj_field(name_offset);
1779 }
1781 void java_lang_reflect_Method::set_name(oop method, oop value) {
1782 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1783 method->obj_field_put(name_offset, value);
1784 }
1786 oop java_lang_reflect_Method::return_type(oop method) {
1787 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1788 return method->obj_field(returnType_offset);
1789 }
1791 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1792 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1793 method->obj_field_put(returnType_offset, value);
1794 }
1796 oop java_lang_reflect_Method::parameter_types(oop method) {
1797 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1798 return method->obj_field(parameterTypes_offset);
1799 }
1801 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1802 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1803 method->obj_field_put(parameterTypes_offset, value);
1804 }
1806 oop java_lang_reflect_Method::exception_types(oop method) {
1807 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1808 return method->obj_field(exceptionTypes_offset);
1809 }
1811 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1812 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1813 method->obj_field_put(exceptionTypes_offset, value);
1814 }
1816 int java_lang_reflect_Method::modifiers(oop method) {
1817 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1818 return method->int_field(modifiers_offset);
1819 }
1821 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1822 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1823 method->int_field_put(modifiers_offset, value);
1824 }
1826 bool java_lang_reflect_Method::has_signature_field() {
1827 return (signature_offset >= 0);
1828 }
1830 oop java_lang_reflect_Method::signature(oop method) {
1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1832 assert(has_signature_field(), "signature field must be present");
1833 return method->obj_field(signature_offset);
1834 }
1836 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1838 assert(has_signature_field(), "signature field must be present");
1839 method->obj_field_put(signature_offset, value);
1840 }
1842 bool java_lang_reflect_Method::has_annotations_field() {
1843 return (annotations_offset >= 0);
1844 }
1846 oop java_lang_reflect_Method::annotations(oop method) {
1847 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1848 assert(has_annotations_field(), "annotations field must be present");
1849 return method->obj_field(annotations_offset);
1850 }
1852 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1854 assert(has_annotations_field(), "annotations field must be present");
1855 method->obj_field_put(annotations_offset, value);
1856 }
1858 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1859 return (parameter_annotations_offset >= 0);
1860 }
1862 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1864 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1865 return method->obj_field(parameter_annotations_offset);
1866 }
1868 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1870 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1871 method->obj_field_put(parameter_annotations_offset, value);
1872 }
1874 bool java_lang_reflect_Method::has_annotation_default_field() {
1875 return (annotation_default_offset >= 0);
1876 }
1878 oop java_lang_reflect_Method::annotation_default(oop method) {
1879 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1880 assert(has_annotation_default_field(), "annotation default field must be present");
1881 return method->obj_field(annotation_default_offset);
1882 }
1884 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1885 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1886 assert(has_annotation_default_field(), "annotation default field must be present");
1887 method->obj_field_put(annotation_default_offset, value);
1888 }
1890 void java_lang_reflect_Constructor::compute_offsets() {
1891 klassOop k = SystemDictionary::reflect_Constructor_klass();
1892 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1893 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1894 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1895 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1896 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1897 // The generic signature and annotations fields are only present in 1.5
1898 signature_offset = -1;
1899 annotations_offset = -1;
1900 parameter_annotations_offset = -1;
1901 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1902 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1903 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1904 }
1906 Handle java_lang_reflect_Constructor::create(TRAPS) {
1907 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1908 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1909 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1910 instanceKlassHandle klass (THREAD, k);
1911 // Ensure it is initialized
1912 klass->initialize(CHECK_NH);
1913 return klass->allocate_instance_handle(CHECK_NH);
1914 }
1916 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1918 return reflect->obj_field(clazz_offset);
1919 }
1921 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1922 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1923 reflect->obj_field_put(clazz_offset, value);
1924 }
1926 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1927 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1928 return constructor->obj_field(parameterTypes_offset);
1929 }
1931 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1932 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1933 constructor->obj_field_put(parameterTypes_offset, value);
1934 }
1936 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1937 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1938 return constructor->obj_field(exceptionTypes_offset);
1939 }
1941 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1942 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1943 constructor->obj_field_put(exceptionTypes_offset, value);
1944 }
1946 int java_lang_reflect_Constructor::slot(oop reflect) {
1947 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1948 return reflect->int_field(slot_offset);
1949 }
1951 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1952 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1953 reflect->int_field_put(slot_offset, value);
1954 }
1956 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1957 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1958 return constructor->int_field(modifiers_offset);
1959 }
1961 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1962 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1963 constructor->int_field_put(modifiers_offset, value);
1964 }
1966 bool java_lang_reflect_Constructor::has_signature_field() {
1967 return (signature_offset >= 0);
1968 }
1970 oop java_lang_reflect_Constructor::signature(oop constructor) {
1971 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1972 assert(has_signature_field(), "signature field must be present");
1973 return constructor->obj_field(signature_offset);
1974 }
1976 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
1977 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1978 assert(has_signature_field(), "signature field must be present");
1979 constructor->obj_field_put(signature_offset, value);
1980 }
1982 bool java_lang_reflect_Constructor::has_annotations_field() {
1983 return (annotations_offset >= 0);
1984 }
1986 oop java_lang_reflect_Constructor::annotations(oop constructor) {
1987 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1988 assert(has_annotations_field(), "annotations field must be present");
1989 return constructor->obj_field(annotations_offset);
1990 }
1992 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
1993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1994 assert(has_annotations_field(), "annotations field must be present");
1995 constructor->obj_field_put(annotations_offset, value);
1996 }
1998 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
1999 return (parameter_annotations_offset >= 0);
2000 }
2002 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2004 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2005 return method->obj_field(parameter_annotations_offset);
2006 }
2008 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2009 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2010 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2011 method->obj_field_put(parameter_annotations_offset, value);
2012 }
2014 void java_lang_reflect_Field::compute_offsets() {
2015 klassOop k = SystemDictionary::reflect_Field_klass();
2016 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2017 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2018 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2019 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2020 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2021 // The generic signature and annotations fields are only present in 1.5
2022 signature_offset = -1;
2023 annotations_offset = -1;
2024 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2025 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2026 }
2028 Handle java_lang_reflect_Field::create(TRAPS) {
2029 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2030 Symbol* name = vmSymbols::java_lang_reflect_Field();
2031 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2032 instanceKlassHandle klass (THREAD, k);
2033 // Ensure it is initialized
2034 klass->initialize(CHECK_NH);
2035 return klass->allocate_instance_handle(CHECK_NH);
2036 }
2038 oop java_lang_reflect_Field::clazz(oop reflect) {
2039 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2040 return reflect->obj_field(clazz_offset);
2041 }
2043 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2044 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2045 reflect->obj_field_put(clazz_offset, value);
2046 }
2048 oop java_lang_reflect_Field::name(oop field) {
2049 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2050 return field->obj_field(name_offset);
2051 }
2053 void java_lang_reflect_Field::set_name(oop field, oop value) {
2054 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2055 field->obj_field_put(name_offset, value);
2056 }
2058 oop java_lang_reflect_Field::type(oop field) {
2059 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2060 return field->obj_field(type_offset);
2061 }
2063 void java_lang_reflect_Field::set_type(oop field, oop value) {
2064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2065 field->obj_field_put(type_offset, value);
2066 }
2068 int java_lang_reflect_Field::slot(oop reflect) {
2069 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2070 return reflect->int_field(slot_offset);
2071 }
2073 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2074 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2075 reflect->int_field_put(slot_offset, value);
2076 }
2078 int java_lang_reflect_Field::modifiers(oop field) {
2079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2080 return field->int_field(modifiers_offset);
2081 }
2083 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2085 field->int_field_put(modifiers_offset, value);
2086 }
2088 bool java_lang_reflect_Field::has_signature_field() {
2089 return (signature_offset >= 0);
2090 }
2092 oop java_lang_reflect_Field::signature(oop field) {
2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2094 assert(has_signature_field(), "signature field must be present");
2095 return field->obj_field(signature_offset);
2096 }
2098 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2099 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2100 assert(has_signature_field(), "signature field must be present");
2101 field->obj_field_put(signature_offset, value);
2102 }
2104 bool java_lang_reflect_Field::has_annotations_field() {
2105 return (annotations_offset >= 0);
2106 }
2108 oop java_lang_reflect_Field::annotations(oop field) {
2109 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2110 assert(has_annotations_field(), "annotations field must be present");
2111 return field->obj_field(annotations_offset);
2112 }
2114 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2115 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2116 assert(has_annotations_field(), "annotations field must be present");
2117 field->obj_field_put(annotations_offset, value);
2118 }
2121 void sun_reflect_ConstantPool::compute_offsets() {
2122 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2123 // This null test can be removed post beta
2124 if (k != NULL) {
2125 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2126 }
2127 }
2130 Handle sun_reflect_ConstantPool::create(TRAPS) {
2131 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2132 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2133 instanceKlassHandle klass (THREAD, k);
2134 // Ensure it is initialized
2135 klass->initialize(CHECK_NH);
2136 return klass->allocate_instance_handle(CHECK_NH);
2137 }
2140 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2141 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2142 return reflect->obj_field(_cp_oop_offset);
2143 }
2146 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2147 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2148 reflect->obj_field_put(_cp_oop_offset, value);
2149 }
2151 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2152 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2153 // This null test can be removed post beta
2154 if (k != NULL) {
2155 compute_offset(_base_offset, k,
2156 vmSymbols::base_name(), vmSymbols::object_signature());
2157 }
2158 }
2160 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2161 klassOop k = SystemDictionary::box_klass(type);
2162 if (k == NULL) return NULL;
2163 instanceKlassHandle h (THREAD, k);
2164 if (!h->is_initialized()) h->initialize(CHECK_0);
2165 return h->allocate_instance(THREAD);
2166 }
2169 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2170 oop box = initialize_and_allocate(type, CHECK_0);
2171 if (box == NULL) return NULL;
2172 switch (type) {
2173 case T_BOOLEAN:
2174 box->bool_field_put(value_offset, value->z);
2175 break;
2176 case T_CHAR:
2177 box->char_field_put(value_offset, value->c);
2178 break;
2179 case T_FLOAT:
2180 box->float_field_put(value_offset, value->f);
2181 break;
2182 case T_DOUBLE:
2183 box->double_field_put(long_value_offset, value->d);
2184 break;
2185 case T_BYTE:
2186 box->byte_field_put(value_offset, value->b);
2187 break;
2188 case T_SHORT:
2189 box->short_field_put(value_offset, value->s);
2190 break;
2191 case T_INT:
2192 box->int_field_put(value_offset, value->i);
2193 break;
2194 case T_LONG:
2195 box->long_field_put(long_value_offset, value->j);
2196 break;
2197 default:
2198 return NULL;
2199 }
2200 return box;
2201 }
2204 BasicType java_lang_boxing_object::basic_type(oop box) {
2205 if (box == NULL) return T_ILLEGAL;
2206 BasicType type = SystemDictionary::box_klass_type(box->klass());
2207 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2208 return T_ILLEGAL;
2209 return type;
2210 }
2213 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2214 BasicType type = SystemDictionary::box_klass_type(box->klass());
2215 switch (type) {
2216 case T_BOOLEAN:
2217 value->z = box->bool_field(value_offset);
2218 break;
2219 case T_CHAR:
2220 value->c = box->char_field(value_offset);
2221 break;
2222 case T_FLOAT:
2223 value->f = box->float_field(value_offset);
2224 break;
2225 case T_DOUBLE:
2226 value->d = box->double_field(long_value_offset);
2227 break;
2228 case T_BYTE:
2229 value->b = box->byte_field(value_offset);
2230 break;
2231 case T_SHORT:
2232 value->s = box->short_field(value_offset);
2233 break;
2234 case T_INT:
2235 value->i = box->int_field(value_offset);
2236 break;
2237 case T_LONG:
2238 value->j = box->long_field(long_value_offset);
2239 break;
2240 default:
2241 return T_ILLEGAL;
2242 } // end switch
2243 return type;
2244 }
2247 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2248 BasicType type = SystemDictionary::box_klass_type(box->klass());
2249 switch (type) {
2250 case T_BOOLEAN:
2251 box->bool_field_put(value_offset, value->z);
2252 break;
2253 case T_CHAR:
2254 box->char_field_put(value_offset, value->c);
2255 break;
2256 case T_FLOAT:
2257 box->float_field_put(value_offset, value->f);
2258 break;
2259 case T_DOUBLE:
2260 box->double_field_put(long_value_offset, value->d);
2261 break;
2262 case T_BYTE:
2263 box->byte_field_put(value_offset, value->b);
2264 break;
2265 case T_SHORT:
2266 box->short_field_put(value_offset, value->s);
2267 break;
2268 case T_INT:
2269 box->int_field_put(value_offset, value->i);
2270 break;
2271 case T_LONG:
2272 box->long_field_put(long_value_offset, value->j);
2273 break;
2274 default:
2275 return T_ILLEGAL;
2276 } // end switch
2277 return type;
2278 }
2281 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2282 switch (type) {
2283 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2284 case T_CHAR: st->print("%d", value->c); break;
2285 case T_BYTE: st->print("%d", value->b); break;
2286 case T_SHORT: st->print("%d", value->s); break;
2287 case T_INT: st->print("%d", value->i); break;
2288 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2289 case T_FLOAT: st->print("%f", value->f); break;
2290 case T_DOUBLE: st->print("%lf", value->d); break;
2291 default: st->print("type %d?", type); break;
2292 }
2293 }
2296 // Support for java_lang_ref_Reference
2297 oop java_lang_ref_Reference::pending_list_lock() {
2298 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2299 address addr = ik->static_field_addr(static_lock_offset);
2300 if (UseCompressedOops) {
2301 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2302 } else {
2303 return oopDesc::load_decode_heap_oop((oop*)addr);
2304 }
2305 }
2307 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2308 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2309 address addr = ik->static_field_addr(static_pending_offset);
2310 // XXX This might not be HeapWord aligned, almost rather be char *.
2311 return (HeapWord*)addr;
2312 }
2314 oop java_lang_ref_Reference::pending_list() {
2315 char *addr = (char *)pending_list_addr();
2316 if (UseCompressedOops) {
2317 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2318 } else {
2319 return oopDesc::load_decode_heap_oop((oop*)addr);
2320 }
2321 }
2324 // Support for java_lang_ref_SoftReference
2326 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2327 return ref->long_field(timestamp_offset);
2328 }
2330 jlong java_lang_ref_SoftReference::clock() {
2331 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2332 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2333 return *offset;
2334 }
2336 void java_lang_ref_SoftReference::set_clock(jlong value) {
2337 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2338 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2339 *offset = value;
2340 }
2343 // Support for java_lang_invoke_MethodHandle
2345 int java_lang_invoke_MethodHandle::_type_offset;
2346 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2347 int java_lang_invoke_MethodHandle::_vmentry_offset;
2349 int java_lang_invoke_MemberName::_clazz_offset;
2350 int java_lang_invoke_MemberName::_name_offset;
2351 int java_lang_invoke_MemberName::_type_offset;
2352 int java_lang_invoke_MemberName::_flags_offset;
2353 int java_lang_invoke_MemberName::_vmtarget_offset;
2354 int java_lang_invoke_MemberName::_vmindex_offset;
2356 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2358 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2359 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2361 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2363 int java_lang_invoke_CountingMethodHandle::_vmcount_offset;
2365 void java_lang_invoke_MethodHandle::compute_offsets() {
2366 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2367 if (klass_oop != NULL && EnableInvokeDynamic) {
2368 bool allow_super = false;
2369 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2370 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2371 }
2372 }
2374 void java_lang_invoke_MemberName::compute_offsets() {
2375 klassOop klass_oop = SystemDictionary::MemberName_klass();
2376 if (klass_oop != NULL && EnableInvokeDynamic) {
2377 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2378 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2379 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2380 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2381 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2382 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2383 }
2384 }
2386 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2387 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2388 if (k != NULL && EnableInvokeDynamic) {
2389 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2390 }
2391 }
2393 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2394 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2395 if (k != NULL && EnableInvokeDynamic) {
2396 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2397 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2398 }
2399 }
2401 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2402 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2403 if (k != NULL && EnableInvokeDynamic) {
2404 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2405 }
2406 }
2408 void java_lang_invoke_CountingMethodHandle::compute_offsets() {
2409 klassOop k = SystemDictionary::CountingMethodHandle_klass();
2410 if (k != NULL && EnableInvokeDynamic) {
2411 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true);
2412 }
2413 }
2415 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) {
2416 assert(is_instance(mh), "CMH only");
2417 return mh->int_field(_vmcount_offset);
2418 }
2420 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) {
2421 assert(is_instance(mh), "CMH only");
2422 mh->int_field_put(_vmcount_offset, count);
2423 }
2425 oop java_lang_invoke_MethodHandle::type(oop mh) {
2426 return mh->obj_field(_type_offset);
2427 }
2429 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2430 mh->obj_field_put(_type_offset, mtype);
2431 }
2433 // fetch type.form.vmslots, which is the number of JVM stack slots
2434 // required to carry the arguments of this MH
2435 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2436 oop mtype = type(mh);
2437 if (mtype == NULL) return 0; // Java code would get NPE
2438 oop form = java_lang_invoke_MethodType::form(mtype);
2439 if (form == NULL) return 0; // Java code would get NPE
2440 return java_lang_invoke_MethodTypeForm::vmslots(form);
2441 }
2443 // fetch the low-level entry point for this mh
2444 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2445 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2446 }
2448 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2449 assert(_vmentry_offset != 0, "must be present");
2451 // This is always the final step that initializes a valid method handle:
2452 mh->release_address_field_put(_vmentry_offset, (address) me);
2454 // There should be enough memory barriers on exit from native methods
2455 // to ensure that the MH is fully initialized to all threads before
2456 // Java code can publish it in global data structures.
2457 // But just in case, we use release_address_field_put.
2458 }
2460 /// MemberName accessors
2462 oop java_lang_invoke_MemberName::clazz(oop mname) {
2463 assert(is_instance(mname), "wrong type");
2464 return mname->obj_field(_clazz_offset);
2465 }
2467 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2468 assert(is_instance(mname), "wrong type");
2469 mname->obj_field_put(_clazz_offset, clazz);
2470 }
2472 oop java_lang_invoke_MemberName::name(oop mname) {
2473 assert(is_instance(mname), "wrong type");
2474 return mname->obj_field(_name_offset);
2475 }
2477 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2478 assert(is_instance(mname), "wrong type");
2479 mname->obj_field_put(_name_offset, name);
2480 }
2482 oop java_lang_invoke_MemberName::type(oop mname) {
2483 assert(is_instance(mname), "wrong type");
2484 return mname->obj_field(_type_offset);
2485 }
2487 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2488 assert(is_instance(mname), "wrong type");
2489 mname->obj_field_put(_type_offset, type);
2490 }
2492 int java_lang_invoke_MemberName::flags(oop mname) {
2493 assert(is_instance(mname), "wrong type");
2494 return mname->int_field(_flags_offset);
2495 }
2497 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2498 assert(is_instance(mname), "wrong type");
2499 mname->int_field_put(_flags_offset, flags);
2500 }
2502 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2503 assert(is_instance(mname), "wrong type");
2504 return mname->obj_field(_vmtarget_offset);
2505 }
2507 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2508 assert(is_instance(mname), "wrong type");
2509 mname->obj_field_put(_vmtarget_offset, ref);
2510 }
2512 int java_lang_invoke_MemberName::vmindex(oop mname) {
2513 assert(is_instance(mname), "wrong type");
2514 return mname->int_field(_vmindex_offset);
2515 }
2517 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2518 assert(is_instance(mname), "wrong type");
2519 mname->int_field_put(_vmindex_offset, index);
2520 }
2522 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2523 assert(is_instance(mh), "MH only");
2524 return mh->obj_field(_vmtarget_offset);
2525 }
2527 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2528 assert(is_instance(mh), "MH only");
2529 mh->obj_field_put(_vmtarget_offset, ref);
2530 }
2532 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2533 assert(is_instance(mh), "DMH only");
2534 return mh->int_field(_vmindex_offset);
2535 }
2537 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2538 assert(is_instance(mh), "DMH only");
2539 mh->int_field_put(_vmindex_offset, index);
2540 }
2542 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2543 assert(is_instance(mh), "BMH only");
2544 return mh->int_field(_vmargslot_offset);
2545 }
2547 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2548 assert(is_instance(mh), "BMH only");
2549 return mh->obj_field(_argument_offset);
2550 }
2552 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2553 assert(is_instance(mh), "AMH only");
2554 return mh->int_field(_conversion_offset);
2555 }
2557 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2558 assert(is_instance(mh), "AMH only");
2559 mh->int_field_put(_conversion_offset, conv);
2560 }
2563 // Support for java_lang_invoke_MethodType
2565 int java_lang_invoke_MethodType::_rtype_offset;
2566 int java_lang_invoke_MethodType::_ptypes_offset;
2567 int java_lang_invoke_MethodType::_form_offset;
2569 void java_lang_invoke_MethodType::compute_offsets() {
2570 klassOop k = SystemDictionary::MethodType_klass();
2571 if (k != NULL) {
2572 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2573 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2574 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2575 }
2576 }
2578 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2579 st->print("(");
2580 objArrayOop pts = ptypes(mt);
2581 for (int i = 0, limit = pts->length(); i < limit; i++) {
2582 java_lang_Class::print_signature(pts->obj_at(i), st);
2583 }
2584 st->print(")");
2585 java_lang_Class::print_signature(rtype(mt), st);
2586 }
2588 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2589 ResourceMark rm;
2590 stringStream buffer(128);
2591 print_signature(mt, &buffer);
2592 const char* sigstr = buffer.base();
2593 int siglen = (int) buffer.size();
2594 Symbol *name;
2595 if (!intern_if_not_found) {
2596 name = SymbolTable::probe(sigstr, siglen);
2597 } else {
2598 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2599 }
2600 return name;
2601 }
2603 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2604 if (rtype(mt1) != rtype(mt2))
2605 return false;
2606 if (ptype_count(mt1) != ptype_count(mt2))
2607 return false;
2608 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2609 if (ptype(mt1, i) != ptype(mt2, i))
2610 return false;
2611 }
2612 return true;
2613 }
2615 oop java_lang_invoke_MethodType::rtype(oop mt) {
2616 assert(is_instance(mt), "must be a MethodType");
2617 return mt->obj_field(_rtype_offset);
2618 }
2620 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2621 assert(is_instance(mt), "must be a MethodType");
2622 return (objArrayOop) mt->obj_field(_ptypes_offset);
2623 }
2625 oop java_lang_invoke_MethodType::form(oop mt) {
2626 assert(is_instance(mt), "must be a MethodType");
2627 return mt->obj_field(_form_offset);
2628 }
2630 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2631 return ptypes(mt)->obj_at(idx);
2632 }
2634 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2635 return ptypes(mt)->length();
2636 }
2640 // Support for java_lang_invoke_MethodTypeForm
2642 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2643 int java_lang_invoke_MethodTypeForm::_vmlayout_offset;
2644 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2645 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2647 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2648 klassOop k = SystemDictionary::MethodTypeForm_klass();
2649 if (k != NULL) {
2650 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2651 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature());
2652 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2653 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2654 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2655 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2656 }
2657 }
2659 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2660 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2661 assert(_vmslots_offset > 0, "");
2662 return mtform->int_field(_vmslots_offset);
2663 }
2665 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) {
2666 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2667 assert(_vmlayout_offset > 0, "");
2668 return mtform->obj_field(_vmlayout_offset);
2669 }
2671 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) {
2672 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2673 oop previous = vmlayout(mtform);
2674 if (previous != NULL) {
2675 return previous; // someone else beat us to it
2676 }
2677 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset);
2678 OrderAccess::storestore(); // make sure our copy is fully committed
2679 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous);
2680 if (previous != NULL) {
2681 return previous; // someone else beat us to it
2682 }
2683 return cookie;
2684 }
2686 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2687 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2688 return mtform->obj_field(_erasedType_offset);
2689 }
2691 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2692 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2693 return mtform->obj_field(_genericInvoker_offset);
2694 }
2697 // Support for java_lang_invoke_CallSite
2699 int java_lang_invoke_CallSite::_target_offset;
2701 void java_lang_invoke_CallSite::compute_offsets() {
2702 if (!EnableInvokeDynamic) return;
2703 klassOop k = SystemDictionary::CallSite_klass();
2704 if (k != NULL) {
2705 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2706 }
2708 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile
2709 // (For C2: keep this until we have throttling logic for uncommon traps.)
2710 if (k != NULL) {
2711 instanceKlass* ik = instanceKlass::cast(k);
2712 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature());
2713 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature());
2714 guarantee(m_normal != NULL && m_volatile != NULL, "must exist");
2715 m_normal->set_not_compilable_quietly();
2716 m_volatile->set_not_compilable_quietly();
2717 }
2718 }
2721 // Support for java_security_AccessControlContext
2723 int java_security_AccessControlContext::_context_offset = 0;
2724 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2725 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2727 void java_security_AccessControlContext::compute_offsets() {
2728 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2729 fieldDescriptor fd;
2730 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2732 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2733 fatal("Invalid layout of java.security.AccessControlContext");
2734 }
2735 _context_offset = fd.offset();
2737 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2738 fatal("Invalid layout of java.security.AccessControlContext");
2739 }
2740 _privilegedContext_offset = fd.offset();
2742 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2743 fatal("Invalid layout of java.security.AccessControlContext");
2744 }
2745 _isPrivileged_offset = fd.offset();
2746 }
2749 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2750 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2751 // Ensure klass is initialized
2752 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2753 // Allocate result
2754 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2755 // Fill in values
2756 result->obj_field_put(_context_offset, context());
2757 result->obj_field_put(_privilegedContext_offset, privileged_context());
2758 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2759 return result;
2760 }
2763 // Support for java_lang_ClassLoader
2764 bool java_lang_ClassLoader::offsets_computed = false;
2765 int java_lang_ClassLoader::parallelCapable_offset = -1;
2767 void java_lang_ClassLoader::compute_offsets() {
2768 assert(!offsets_computed, "offsets should be initialized only once");
2769 offsets_computed = true;
2771 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2772 klassOop k1 = SystemDictionary::ClassLoader_klass();
2773 compute_optional_offset(parallelCapable_offset,
2774 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2775 }
2777 oop java_lang_ClassLoader::parent(oop loader) {
2778 assert(loader->is_oop(), "loader must be oop");
2779 return loader->obj_field(parent_offset);
2780 }
2783 // For class loader classes, parallelCapable defined
2784 // based on non-null field
2785 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2786 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2787 if (!JDK_Version::is_gte_jdk17x_version()
2788 || parallelCapable_offset == -1) {
2789 // Default for backward compatibility is false
2790 return false;
2791 }
2792 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2793 }
2795 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2796 // Fix for 4474172; see evaluation for more details
2797 loader = non_reflection_class_loader(loader);
2799 oop cl = SystemDictionary::java_system_loader();
2800 while(cl != NULL) {
2801 if (cl == loader) return true;
2802 cl = parent(cl);
2803 }
2804 return false;
2805 }
2807 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2808 if (loader != NULL) {
2809 // See whether this is one of the class loaders associated with
2810 // the generated bytecodes for reflection, and if so, "magically"
2811 // delegate to its parent to prevent class loading from occurring
2812 // in places where applications using reflection didn't expect it.
2813 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2814 // This might be null in non-1.4 JDKs
2815 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2816 return parent(loader);
2817 }
2818 }
2819 return loader;
2820 }
2823 // Support for java_lang_System
2824 int java_lang_System::in_offset_in_bytes() {
2825 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2826 }
2829 int java_lang_System::out_offset_in_bytes() {
2830 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2831 }
2834 int java_lang_System::err_offset_in_bytes() {
2835 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2836 }
2840 int java_lang_String::value_offset;
2841 int java_lang_String::offset_offset;
2842 int java_lang_String::count_offset;
2843 int java_lang_String::hash_offset;
2844 int java_lang_Class::_klass_offset;
2845 int java_lang_Class::_array_klass_offset;
2846 int java_lang_Class::_resolved_constructor_offset;
2847 int java_lang_Class::_oop_size_offset;
2848 int java_lang_Class::_static_oop_field_count_offset;
2849 int java_lang_Throwable::backtrace_offset;
2850 int java_lang_Throwable::detailMessage_offset;
2851 int java_lang_Throwable::cause_offset;
2852 int java_lang_Throwable::stackTrace_offset;
2853 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2854 int java_lang_reflect_AccessibleObject::override_offset;
2855 int java_lang_reflect_Method::clazz_offset;
2856 int java_lang_reflect_Method::name_offset;
2857 int java_lang_reflect_Method::returnType_offset;
2858 int java_lang_reflect_Method::parameterTypes_offset;
2859 int java_lang_reflect_Method::exceptionTypes_offset;
2860 int java_lang_reflect_Method::slot_offset;
2861 int java_lang_reflect_Method::modifiers_offset;
2862 int java_lang_reflect_Method::signature_offset;
2863 int java_lang_reflect_Method::annotations_offset;
2864 int java_lang_reflect_Method::parameter_annotations_offset;
2865 int java_lang_reflect_Method::annotation_default_offset;
2866 int java_lang_reflect_Constructor::clazz_offset;
2867 int java_lang_reflect_Constructor::parameterTypes_offset;
2868 int java_lang_reflect_Constructor::exceptionTypes_offset;
2869 int java_lang_reflect_Constructor::slot_offset;
2870 int java_lang_reflect_Constructor::modifiers_offset;
2871 int java_lang_reflect_Constructor::signature_offset;
2872 int java_lang_reflect_Constructor::annotations_offset;
2873 int java_lang_reflect_Constructor::parameter_annotations_offset;
2874 int java_lang_reflect_Field::clazz_offset;
2875 int java_lang_reflect_Field::name_offset;
2876 int java_lang_reflect_Field::type_offset;
2877 int java_lang_reflect_Field::slot_offset;
2878 int java_lang_reflect_Field::modifiers_offset;
2879 int java_lang_reflect_Field::signature_offset;
2880 int java_lang_reflect_Field::annotations_offset;
2881 int java_lang_boxing_object::value_offset;
2882 int java_lang_boxing_object::long_value_offset;
2883 int java_lang_ref_Reference::referent_offset;
2884 int java_lang_ref_Reference::queue_offset;
2885 int java_lang_ref_Reference::next_offset;
2886 int java_lang_ref_Reference::discovered_offset;
2887 int java_lang_ref_Reference::static_lock_offset;
2888 int java_lang_ref_Reference::static_pending_offset;
2889 int java_lang_ref_Reference::number_of_fake_oop_fields;
2890 int java_lang_ref_SoftReference::timestamp_offset;
2891 int java_lang_ref_SoftReference::static_clock_offset;
2892 int java_lang_ClassLoader::parent_offset;
2893 int java_lang_System::static_in_offset;
2894 int java_lang_System::static_out_offset;
2895 int java_lang_System::static_err_offset;
2896 int java_lang_StackTraceElement::declaringClass_offset;
2897 int java_lang_StackTraceElement::methodName_offset;
2898 int java_lang_StackTraceElement::fileName_offset;
2899 int java_lang_StackTraceElement::lineNumber_offset;
2900 int java_lang_AssertionStatusDirectives::classes_offset;
2901 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2902 int java_lang_AssertionStatusDirectives::packages_offset;
2903 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2904 int java_lang_AssertionStatusDirectives::deflt_offset;
2905 int java_nio_Buffer::_limit_offset;
2906 int sun_misc_AtomicLongCSImpl::_value_offset;
2907 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2908 int sun_reflect_ConstantPool::_cp_oop_offset;
2909 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2912 // Support for java_lang_StackTraceElement
2914 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2915 element->obj_field_put(fileName_offset, value);
2916 }
2918 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2919 element->obj_field_put(declaringClass_offset, value);
2920 }
2922 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2923 element->obj_field_put(methodName_offset, value);
2924 }
2926 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2927 element->int_field_put(lineNumber_offset, value);
2928 }
2931 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2933 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2934 o->obj_field_put(classes_offset, val);
2935 }
2937 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2938 o->obj_field_put(classEnabled_offset, val);
2939 }
2941 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2942 o->obj_field_put(packages_offset, val);
2943 }
2945 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2946 o->obj_field_put(packageEnabled_offset, val);
2947 }
2949 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2950 o->bool_field_put(deflt_offset, val);
2951 }
2954 // Support for intrinsification of java.nio.Buffer.checkIndex
2955 int java_nio_Buffer::limit_offset() {
2956 return _limit_offset;
2957 }
2960 void java_nio_Buffer::compute_offsets() {
2961 klassOop k = SystemDictionary::nio_Buffer_klass();
2962 assert(k != NULL, "must be loaded in 1.4+");
2963 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2964 }
2966 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
2967 int sun_misc_AtomicLongCSImpl::value_offset() {
2968 assert(SystemDictionary::AtomicLongCSImpl_klass() != NULL, "can't call this");
2969 return _value_offset;
2970 }
2973 void sun_misc_AtomicLongCSImpl::compute_offsets() {
2974 klassOop k = SystemDictionary::AtomicLongCSImpl_klass();
2975 // If this class is not present, its value field offset won't be referenced.
2976 if (k != NULL) {
2977 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
2978 }
2979 }
2981 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2982 if (_owner_offset != 0) return;
2984 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2985 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2986 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
2987 compute_offset(_owner_offset, k,
2988 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2989 }
2991 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2992 assert(_owner_offset != 0, "Must be initialized");
2993 return obj->obj_field(_owner_offset);
2994 }
2996 // Compute hard-coded offsets
2997 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2998 // are not available to determine the offset_of_static_fields.
2999 void JavaClasses::compute_hard_coded_offsets() {
3000 const int x = heapOopSize;
3001 const int header = instanceOopDesc::base_offset_in_bytes();
3003 // Do the String Class
3004 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header;
3005 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header;
3006 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint);
3007 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint);
3009 // Throwable Class
3010 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3011 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3012 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3013 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3014 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3016 // java_lang_boxing_object
3017 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3018 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3020 // java_lang_ref_Reference:
3021 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3022 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3023 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3024 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3025 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3026 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3027 // Artificial fields for java_lang_ref_Reference
3028 // The first field is for the discovered field added in 1.4
3029 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3031 // java_lang_ref_SoftReference Class
3032 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3033 // Don't multiply static fields because they are always in wordSize units
3034 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3036 // java_lang_ClassLoader
3037 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3039 // java_lang_System
3040 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3041 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3042 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3044 // java_lang_StackTraceElement
3045 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3046 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3047 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3048 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3049 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3050 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3051 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3052 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3053 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3055 }
3058 // Compute non-hard-coded field offsets of all the classes in this file
3059 void JavaClasses::compute_offsets() {
3060 // java_lang_Class::compute_offsets was called earlier in bootstrap
3061 java_lang_ClassLoader::compute_offsets();
3062 java_lang_Thread::compute_offsets();
3063 java_lang_ThreadGroup::compute_offsets();
3064 if (EnableInvokeDynamic) {
3065 java_lang_invoke_MethodHandle::compute_offsets();
3066 java_lang_invoke_MemberName::compute_offsets();
3067 java_lang_invoke_DirectMethodHandle::compute_offsets();
3068 java_lang_invoke_BoundMethodHandle::compute_offsets();
3069 java_lang_invoke_AdapterMethodHandle::compute_offsets();
3070 java_lang_invoke_MethodType::compute_offsets();
3071 java_lang_invoke_MethodTypeForm::compute_offsets();
3072 java_lang_invoke_CallSite::compute_offsets();
3073 java_lang_invoke_CountingMethodHandle::compute_offsets();
3074 }
3075 java_security_AccessControlContext::compute_offsets();
3076 // Initialize reflection classes. The layouts of these classes
3077 // changed with the new reflection implementation in JDK 1.4, and
3078 // since the Universe doesn't know what JDK version it is until this
3079 // point we defer computation of these offsets until now.
3080 java_lang_reflect_AccessibleObject::compute_offsets();
3081 java_lang_reflect_Method::compute_offsets();
3082 java_lang_reflect_Constructor::compute_offsets();
3083 java_lang_reflect_Field::compute_offsets();
3084 if (JDK_Version::is_gte_jdk14x_version()) {
3085 java_nio_Buffer::compute_offsets();
3086 }
3087 if (JDK_Version::is_gte_jdk15x_version()) {
3088 sun_reflect_ConstantPool::compute_offsets();
3089 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3090 }
3091 sun_misc_AtomicLongCSImpl::compute_offsets();
3093 // generated interpreter code wants to know about the offsets we just computed:
3094 AbstractAssembler::update_delayed_values();
3095 }
3097 #ifndef PRODUCT
3099 // These functions exist to assert the validity of hard-coded field offsets to guard
3100 // against changes in the class files
3102 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3103 EXCEPTION_MARK;
3104 fieldDescriptor fd;
3105 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3106 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3107 instanceKlassHandle h_klass (THREAD, k);
3108 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3109 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3110 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3111 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3112 return false;
3113 }
3114 if (fd.is_static()) {
3115 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3116 return false;
3117 }
3118 if (fd.offset() == hardcoded_offset ) {
3119 return true;
3120 } else {
3121 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3122 klass_name, field_name, hardcoded_offset, fd.offset());
3123 return false;
3124 }
3125 }
3128 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3129 EXCEPTION_MARK;
3130 fieldDescriptor fd;
3131 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3132 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3133 instanceKlassHandle h_klass (THREAD, k);
3134 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3135 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3136 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3137 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3138 return false;
3139 }
3140 if (!fd.is_static()) {
3141 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3142 return false;
3143 }
3144 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3145 return true;
3146 } else {
3147 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());
3148 return false;
3149 }
3150 }
3153 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3154 EXCEPTION_MARK;
3155 fieldDescriptor fd;
3156 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3157 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3158 instanceKlassHandle h_klass (THREAD, k);
3159 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3160 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3161 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3162 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3163 return false;
3164 }
3165 if (!fd.is_static() || !fd.has_initial_value()) {
3166 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3167 return false;
3168 }
3169 if (!fd.initial_value_tag().is_int()) {
3170 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3171 return false;
3172 }
3173 jint field_value = fd.int_initial_value();
3174 if (field_value == hardcoded_constant) {
3175 return true;
3176 } else {
3177 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);
3178 return false;
3179 }
3180 }
3183 // Check the hard-coded field offsets of all the classes in this file
3185 void JavaClasses::check_offsets() {
3186 bool valid = true;
3188 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3189 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3191 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3192 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3194 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3195 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3197 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3198 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3200 // java.lang.String
3202 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3203 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3204 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3205 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3207 // java.lang.Class
3209 // Fake fields
3210 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3211 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3212 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3214 // java.lang.Throwable
3216 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3217 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3218 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3219 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3221 // Boxed primitive objects (java_lang_boxing_object)
3223 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3224 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3225 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3226 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3227 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3228 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3229 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3230 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3232 // java.lang.ClassLoader
3234 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3236 // java.lang.System
3238 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3239 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3240 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3242 // java.lang.StackTraceElement
3244 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3245 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3246 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3247 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3249 // java.lang.ref.Reference
3251 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3252 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3253 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3254 // Fake field
3255 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3256 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3257 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3259 // java.lang.ref.SoftReference
3261 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3262 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3264 // java.lang.AssertionStatusDirectives
3265 //
3266 // The CheckAssertionStatusDirectives boolean can be removed from here and
3267 // globals.hpp after the AssertionStatusDirectives class has been integrated
3268 // into merlin "for some time." Without it, the vm will fail with early
3269 // merlin builds.
3271 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3272 const char* nm = "java/lang/AssertionStatusDirectives";
3273 const char* sig = "[Ljava/lang/String;";
3274 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3275 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3276 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3277 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3278 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3279 }
3281 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3282 }
3284 #endif // PRODUCT
3286 int InjectedField::compute_offset() {
3287 klassOop klass_oop = klass();
3288 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3289 if (!may_be_java && !fs.access_flags().is_internal()) {
3290 // Only look at injected fields
3291 continue;
3292 }
3293 if (fs.name() == name() && fs.signature() == signature()) {
3294 return fs.offset();
3295 }
3296 }
3297 ResourceMark rm;
3298 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string());
3299 fatal("Invalid layout of preloaded class");
3300 return -1;
3301 }
3303 void javaClasses_init() {
3304 JavaClasses::compute_offsets();
3305 JavaClasses::check_offsets();
3306 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3307 }