Tue, 15 Jan 2013 13:32:13 +0100
8005590: java_lang_Class injected field resolved_constructor appears unused
Reviewed-by: coleenp, dholmes
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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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).
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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23 */
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/symbolTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/pcDesc.hpp"
32 #include "compiler/compilerOracle.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/fieldStreams.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceMirrorKlass.hpp"
40 #include "oops/klass.hpp"
41 #include "oops/method.hpp"
42 #include "oops/symbol.hpp"
43 #include "oops/typeArrayOop.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/java.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/thread.inline.hpp"
51 #include "runtime/vframe.hpp"
52 #include "utilities/preserveException.hpp"
54 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
55 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
57 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
58 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
60 InjectedField JavaClasses::_injected_fields[] = {
61 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
62 };
64 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
65 return _injected_fields[id].compute_offset();
66 }
69 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
70 *field_count = 0;
72 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
73 if (sid == vmSymbols::NO_SID) {
74 // Only well known classes can inject fields
75 return NULL;
76 }
78 int count = 0;
79 int start = -1;
81 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
82 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
83 count++; \
84 if (start == -1) start = klass##_##name##_enum; \
85 }
86 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
87 #undef LOOKUP_INJECTED_FIELD
89 if (start != -1) {
90 *field_count = count;
91 return _injected_fields + start;
92 }
93 return NULL;
94 }
97 static bool find_field(InstanceKlass* ik,
98 Symbol* name_symbol, Symbol* signature_symbol,
99 fieldDescriptor* fd,
100 bool allow_super = false) {
101 if (allow_super)
102 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
103 else
104 return ik->find_local_field(name_symbol, signature_symbol, fd);
105 }
107 // Helpful routine for computing field offsets at run time rather than hardcoding them
108 static void
109 compute_offset(int &dest_offset,
110 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
111 bool allow_super = false) {
112 fieldDescriptor fd;
113 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
114 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
115 ResourceMark rm;
116 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
117 #ifndef PRODUCT
118 klass_oop->print();
119 tty->print_cr("all fields:");
120 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
121 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
122 }
123 #endif //PRODUCT
124 fatal("Invalid layout of preloaded class");
125 }
126 dest_offset = fd.offset();
127 }
129 // Same as above but for "optional" offsets that might not be present in certain JDK versions
130 static void
131 compute_optional_offset(int& dest_offset,
132 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
133 bool allow_super = false) {
134 fieldDescriptor fd;
135 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
136 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
137 dest_offset = fd.offset();
138 }
139 }
142 int java_lang_String::value_offset = 0;
143 int java_lang_String::offset_offset = 0;
144 int java_lang_String::count_offset = 0;
145 int java_lang_String::hash_offset = 0;
147 bool java_lang_String::initialized = false;
149 void java_lang_String::compute_offsets() {
150 assert(!initialized, "offsets should be initialized only once");
152 Klass* k = SystemDictionary::String_klass();
153 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
154 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
155 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
156 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
158 initialized = true;
159 }
161 Handle java_lang_String::basic_create(int length, TRAPS) {
162 assert(initialized, "Must be initialized");
163 // Create the String object first, so there's a chance that the String
164 // and the char array it points to end up in the same cache line.
165 oop obj;
166 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
168 // Create the char array. The String object must be handlized here
169 // because GC can happen as a result of the allocation attempt.
170 Handle h_obj(THREAD, obj);
171 typeArrayOop buffer;
172 buffer = oopFactory::new_charArray(length, CHECK_NH);
174 // Point the String at the char array
175 obj = h_obj();
176 set_value(obj, buffer);
177 // No need to zero the offset, allocation zero'ed the entire String object
178 assert(offset(obj) == 0, "initial String offset should be zero");
179 //set_offset(obj, 0);
180 set_count(obj, length);
182 return h_obj;
183 }
185 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
186 Handle h_obj = basic_create(length, CHECK_NH);
187 typeArrayOop buffer = value(h_obj());
188 for (int index = 0; index < length; index++) {
189 buffer->char_at_put(index, unicode[index]);
190 }
191 return h_obj;
192 }
194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
195 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
196 return h_obj();
197 }
199 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
200 if (utf8_str == NULL) {
201 return Handle();
202 }
203 int length = UTF8::unicode_length(utf8_str);
204 Handle h_obj = basic_create(length, CHECK_NH);
205 if (length > 0) {
206 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
207 }
208 return h_obj;
209 }
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, 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, 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_code(oop java_string) {
331 int length = java_lang_String::length(java_string);
332 // Zero length string will hash to zero with String.hashCode() function.
333 if (length == 0) return 0;
335 typeArrayOop value = java_lang_String::value(java_string);
336 int offset = java_lang_String::offset(java_string);
337 return java_lang_String::hash_code(value->char_at_addr(offset), length);
338 }
340 char* java_lang_String::as_quoted_ascii(oop java_string) {
341 typeArrayOop value = java_lang_String::value(java_string);
342 int offset = java_lang_String::offset(java_string);
343 int length = java_lang_String::length(java_string);
345 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
346 if (base == NULL) return NULL;
348 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
349 char* result = NEW_RESOURCE_ARRAY(char, result_length);
350 UNICODE::as_quoted_ascii(base, length, result, result_length);
351 assert(result_length >= length + 1, "must not be shorter");
352 assert(result_length == (int)strlen(result) + 1, "must match");
353 return result;
354 }
356 unsigned int java_lang_String::hash_string(oop java_string) {
357 int length = java_lang_String::length(java_string);
358 // Zero length string doesn't hash necessarily hash to zero.
359 if (length == 0) {
360 return StringTable::hash_string(NULL, 0);
361 }
363 typeArrayOop value = java_lang_String::value(java_string);
364 int offset = java_lang_String::offset(java_string);
365 return StringTable::hash_string(value->char_at_addr(offset), length);
366 }
368 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
369 oop obj = java_string();
370 typeArrayOop value = java_lang_String::value(obj);
371 int offset = java_lang_String::offset(obj);
372 int length = java_lang_String::length(obj);
373 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
374 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
375 return sym;
376 }
378 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
379 typeArrayOop value = java_lang_String::value(java_string);
380 int offset = java_lang_String::offset(java_string);
381 int length = java_lang_String::length(java_string);
382 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
383 return SymbolTable::probe_unicode(base, length);
384 }
387 int java_lang_String::utf8_length(oop java_string) {
388 typeArrayOop value = java_lang_String::value(java_string);
389 int offset = java_lang_String::offset(java_string);
390 int length = java_lang_String::length(java_string);
391 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
392 return UNICODE::utf8_length(position, length);
393 }
395 char* java_lang_String::as_utf8_string(oop java_string) {
396 typeArrayOop value = java_lang_String::value(java_string);
397 int offset = java_lang_String::offset(java_string);
398 int length = java_lang_String::length(java_string);
399 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
400 return UNICODE::as_utf8(position, length);
401 }
403 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
404 typeArrayOop value = java_lang_String::value(java_string);
405 int offset = java_lang_String::offset(java_string);
406 int length = java_lang_String::length(java_string);
407 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
408 return UNICODE::as_utf8(position, length, buf, buflen);
409 }
411 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
412 typeArrayOop value = java_lang_String::value(java_string);
413 int offset = java_lang_String::offset(java_string);
414 int length = java_lang_String::length(java_string);
415 assert(start + len <= length, "just checking");
416 jchar* position = value->char_at_addr(offset + start);
417 return UNICODE::as_utf8(position, len);
418 }
420 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
421 assert(java_string->klass() == SystemDictionary::String_klass(),
422 "must be java_string");
423 typeArrayOop value = java_lang_String::value(java_string);
424 int offset = java_lang_String::offset(java_string);
425 int length = java_lang_String::length(java_string);
426 if (length != len) {
427 return false;
428 }
429 for (int i = 0; i < len; i++) {
430 if (value->char_at(i + offset) != chars[i]) {
431 return false;
432 }
433 }
434 return true;
435 }
437 void java_lang_String::print(Handle java_string, outputStream* st) {
438 oop obj = java_string();
439 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
440 typeArrayOop value = java_lang_String::value(obj);
441 int offset = java_lang_String::offset(obj);
442 int length = java_lang_String::length(obj);
444 int end = MIN2(length, 100);
445 if (value == NULL) {
446 // This can happen if, e.g., printing a String
447 // object before its initializer has been called
448 st->print_cr("NULL");
449 } else {
450 st->print("\"");
451 for (int index = 0; index < length; index++) {
452 st->print("%c", value->char_at(index + offset));
453 }
454 st->print("\"");
455 }
456 }
458 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
459 Handle mirror (THREAD, fd->field_holder()->java_mirror());
460 assert(mirror.not_null() && fd->is_static(), "just checking");
461 if (fd->has_initial_value()) {
462 BasicType t = fd->field_type();
463 switch (t) {
464 case T_BYTE:
465 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
466 break;
467 case T_BOOLEAN:
468 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
469 break;
470 case T_CHAR:
471 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
472 break;
473 case T_SHORT:
474 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
475 break;
476 case T_INT:
477 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
478 break;
479 case T_FLOAT:
480 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
481 break;
482 case T_DOUBLE:
483 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
484 break;
485 case T_LONG:
486 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
487 break;
488 case T_OBJECT:
489 {
490 #ifdef ASSERT
491 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
492 assert(fd->signature() == sym, "just checking");
493 #endif
494 oop string = fd->string_initial_value(CHECK);
495 mirror()->obj_field_put(fd->offset(), string);
496 }
497 break;
498 default:
499 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
500 "Illegal ConstantValue attribute in class file");
501 }
502 }
503 }
506 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
507 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
509 // If the offset was read from the shared archive, it was fixed up already
510 if (!k->is_shared()) {
511 if (k->oop_is_instance()) {
512 // During bootstrap, java.lang.Class wasn't loaded so static field
513 // offsets were computed without the size added it. Go back and
514 // update all the static field offsets to included the size.
515 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
516 if (fs.access_flags().is_static()) {
517 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
518 fs.set_offset(real_offset);
519 }
520 }
521 }
522 }
523 create_mirror(k, CHECK);
524 }
526 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
527 assert(k->java_mirror() == NULL, "should only assign mirror once");
528 // Use this moment of initialization to cache modifier_flags also,
529 // to support Class.getModifiers(). Instance classes recalculate
530 // the cached flags after the class file is parsed, but before the
531 // class is put into the system dictionary.
532 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
533 k->set_modifier_flags(computed_modifiers);
534 // Class_klass has to be loaded because it is used to allocate
535 // the mirror.
536 if (SystemDictionary::Class_klass_loaded()) {
537 // Allocate mirror (java.lang.Class instance)
538 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
540 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
541 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
543 // It might also have a component mirror. This mirror must already exist.
544 if (k->oop_is_array()) {
545 Handle comp_mirror;
546 if (k->oop_is_typeArray()) {
547 BasicType type = TypeArrayKlass::cast(k())->element_type();
548 comp_mirror = Universe::java_mirror(type);
549 } else {
550 assert(k->oop_is_objArray(), "Must be");
551 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
552 assert(element_klass != NULL, "Must have an element klass");
553 comp_mirror = element_klass->java_mirror();
554 }
555 assert(comp_mirror.not_null(), "must have a mirror");
557 // Two-way link between the array klass and its component mirror:
558 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
559 set_array_klass(comp_mirror(), k());
560 } else {
561 assert(k->oop_is_instance(), "Must be");
562 // Initialize static fields
563 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
564 }
565 return mirror();
566 } else {
567 if (fixup_mirror_list() == NULL) {
568 GrowableArray<Klass*>* list =
569 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
570 set_fixup_mirror_list(list);
571 }
572 fixup_mirror_list()->push(k());
573 return NULL;
574 }
575 }
579 int java_lang_Class::oop_size(oop java_class) {
580 assert(_oop_size_offset != 0, "must be set");
581 return java_class->int_field(_oop_size_offset);
582 }
583 void java_lang_Class::set_oop_size(oop java_class, int size) {
584 assert(_oop_size_offset != 0, "must be set");
585 java_class->int_field_put(_oop_size_offset, size);
586 }
587 int java_lang_Class::static_oop_field_count(oop java_class) {
588 assert(_static_oop_field_count_offset != 0, "must be set");
589 return java_class->int_field(_static_oop_field_count_offset);
590 }
591 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
592 assert(_static_oop_field_count_offset != 0, "must be set");
593 java_class->int_field_put(_static_oop_field_count_offset, size);
594 }
596 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
597 // This should be improved by adding a field at the Java level or by
598 // introducing a new VM klass (see comment in ClassFileParser)
599 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
600 if (type != T_VOID) {
601 Klass* aklass = Universe::typeArrayKlassObj(type);
602 assert(aklass != NULL, "correct bootstrap");
603 set_array_klass(java_class, aklass);
604 }
605 #ifdef ASSERT
606 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
607 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
608 #endif
609 return java_class;
610 }
613 Klass* java_lang_Class::as_Klass(oop java_class) {
614 //%note memory_2
615 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
616 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
617 assert(k == NULL || k->is_klass(), "type check");
618 return k;
619 }
622 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
623 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
624 java_class->metadata_field_put(_klass_offset, klass);
625 }
628 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
629 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
630 Symbol* name = NULL;
631 bool is_instance = false;
632 if (is_primitive(java_class)) {
633 name = vmSymbols::type_signature(primitive_type(java_class));
634 } else {
635 Klass* k = as_Klass(java_class);
636 is_instance = k->oop_is_instance();
637 name = k->name();
638 }
639 if (name == NULL) {
640 st->print("<null>");
641 return;
642 }
643 if (is_instance) st->print("L");
644 st->write((char*) name->base(), (int) name->utf8_length());
645 if (is_instance) st->print(";");
646 }
648 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
649 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
650 Symbol* name;
651 if (is_primitive(java_class)) {
652 name = vmSymbols::type_signature(primitive_type(java_class));
653 // Because this can create a new symbol, the caller has to decrement
654 // the refcount, so make adjustment here and below for symbols returned
655 // that are not created or incremented due to a successful lookup.
656 name->increment_refcount();
657 } else {
658 Klass* k = as_Klass(java_class);
659 if (!k->oop_is_instance()) {
660 name = k->name();
661 name->increment_refcount();
662 } else {
663 ResourceMark rm;
664 const char* sigstr = k->signature_name();
665 int siglen = (int) strlen(sigstr);
666 if (!intern_if_not_found) {
667 name = SymbolTable::probe(sigstr, siglen);
668 } else {
669 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
670 }
671 }
672 }
673 return name;
674 }
677 Klass* java_lang_Class::array_klass(oop java_class) {
678 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
679 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass");
680 return k;
681 }
684 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
685 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass");
686 java_class->metadata_field_put(_array_klass_offset, klass);
687 }
690 bool java_lang_Class::is_primitive(oop java_class) {
691 // should assert:
692 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
693 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
695 #ifdef ASSERT
696 if (is_primitive) {
697 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
698 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
699 "Should be either the T_VOID primitive or a java primitive");
700 }
701 #endif
703 return is_primitive;
704 }
707 BasicType java_lang_Class::primitive_type(oop java_class) {
708 assert(java_lang_Class::is_primitive(java_class), "just checking");
709 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
710 BasicType type = T_VOID;
711 if (ak != NULL) {
712 // Note: create_basic_type_mirror above initializes ak to a non-null value.
713 type = ArrayKlass::cast(ak)->element_type();
714 } else {
715 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
716 }
717 assert(Universe::java_mirror(type) == java_class, "must be consistent");
718 return type;
719 }
721 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
722 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
723 if (is_primitive(java_class)) {
724 if (reference_klass != NULL)
725 (*reference_klass) = NULL;
726 return primitive_type(java_class);
727 } else {
728 if (reference_klass != NULL)
729 (*reference_klass) = as_Klass(java_class);
730 return T_OBJECT;
731 }
732 }
735 oop java_lang_Class::primitive_mirror(BasicType t) {
736 oop mirror = Universe::java_mirror(t);
737 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
738 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
739 return mirror;
740 }
742 bool java_lang_Class::offsets_computed = false;
743 int java_lang_Class::classRedefinedCount_offset = -1;
745 void java_lang_Class::compute_offsets() {
746 assert(!offsets_computed, "offsets should be initialized only once");
747 offsets_computed = true;
749 Klass* klass_oop = SystemDictionary::Class_klass();
750 // The classRedefinedCount field is only present starting in 1.5,
751 // so don't go fatal.
752 compute_optional_offset(classRedefinedCount_offset,
753 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
755 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
756 }
758 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
759 if (!JDK_Version::is_gte_jdk15x_version()
760 || classRedefinedCount_offset == -1) {
761 // The classRedefinedCount field is only present starting in 1.5.
762 // If we don't have an offset for it then just return -1 as a marker.
763 return -1;
764 }
766 return the_class_mirror->int_field(classRedefinedCount_offset);
767 }
769 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
770 if (!JDK_Version::is_gte_jdk15x_version()
771 || classRedefinedCount_offset == -1) {
772 // The classRedefinedCount field is only present starting in 1.5.
773 // If we don't have an offset for it then nothing to set.
774 return;
775 }
777 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
778 }
781 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
782 // platform thread structure, and a eetop offset which was used for thread
783 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
784 // merged, so in the HotSpot VM we just use the eetop field for the thread
785 // instead of the privateInfo_offset.
786 //
787 // Note: The stackSize field is only present starting in 1.4.
789 int java_lang_Thread::_name_offset = 0;
790 int java_lang_Thread::_group_offset = 0;
791 int java_lang_Thread::_contextClassLoader_offset = 0;
792 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
793 int java_lang_Thread::_priority_offset = 0;
794 int java_lang_Thread::_eetop_offset = 0;
795 int java_lang_Thread::_daemon_offset = 0;
796 int java_lang_Thread::_stillborn_offset = 0;
797 int java_lang_Thread::_stackSize_offset = 0;
798 int java_lang_Thread::_tid_offset = 0;
799 int java_lang_Thread::_thread_status_offset = 0;
800 int java_lang_Thread::_park_blocker_offset = 0;
801 int java_lang_Thread::_park_event_offset = 0 ;
804 void java_lang_Thread::compute_offsets() {
805 assert(_group_offset == 0, "offsets should be initialized only once");
807 Klass* k = SystemDictionary::Thread_klass();
808 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
809 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
810 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
811 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
812 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
813 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
814 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
815 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
816 // The stackSize field is only present starting in 1.4, so don't go fatal.
817 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
818 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
819 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
820 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
821 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
822 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
823 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
824 vmSymbols::long_signature());
825 }
828 JavaThread* java_lang_Thread::thread(oop java_thread) {
829 return (JavaThread*)java_thread->address_field(_eetop_offset);
830 }
833 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
834 java_thread->address_field_put(_eetop_offset, (address)thread);
835 }
838 typeArrayOop java_lang_Thread::name(oop java_thread) {
839 oop name = java_thread->obj_field(_name_offset);
840 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
841 return typeArrayOop(name);
842 }
845 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
846 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
847 java_thread->obj_field_put(_name_offset, name);
848 }
851 ThreadPriority java_lang_Thread::priority(oop java_thread) {
852 return (ThreadPriority)java_thread->int_field(_priority_offset);
853 }
856 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
857 java_thread->int_field_put(_priority_offset, priority);
858 }
861 oop java_lang_Thread::threadGroup(oop java_thread) {
862 return java_thread->obj_field(_group_offset);
863 }
866 bool java_lang_Thread::is_stillborn(oop java_thread) {
867 return java_thread->bool_field(_stillborn_offset) != 0;
868 }
871 // We never have reason to turn the stillborn bit off
872 void java_lang_Thread::set_stillborn(oop java_thread) {
873 java_thread->bool_field_put(_stillborn_offset, true);
874 }
877 bool java_lang_Thread::is_alive(oop java_thread) {
878 JavaThread* thr = java_lang_Thread::thread(java_thread);
879 return (thr != NULL);
880 }
883 bool java_lang_Thread::is_daemon(oop java_thread) {
884 return java_thread->bool_field(_daemon_offset) != 0;
885 }
888 void java_lang_Thread::set_daemon(oop java_thread) {
889 java_thread->bool_field_put(_daemon_offset, true);
890 }
892 oop java_lang_Thread::context_class_loader(oop java_thread) {
893 return java_thread->obj_field(_contextClassLoader_offset);
894 }
896 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
897 return java_thread->obj_field(_inheritedAccessControlContext_offset);
898 }
901 jlong java_lang_Thread::stackSize(oop java_thread) {
902 // The stackSize field is only present starting in 1.4
903 if (_stackSize_offset > 0) {
904 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
905 return java_thread->long_field(_stackSize_offset);
906 } else {
907 return 0;
908 }
909 }
911 // Write the thread status value to threadStatus field in java.lang.Thread java class.
912 void java_lang_Thread::set_thread_status(oop java_thread,
913 java_lang_Thread::ThreadStatus status) {
914 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
915 // The threadStatus is only present starting in 1.5
916 if (_thread_status_offset > 0) {
917 java_thread->int_field_put(_thread_status_offset, status);
918 }
919 }
921 // Read thread status value from threadStatus field in java.lang.Thread java class.
922 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
923 assert(Thread::current()->is_VM_thread() ||
924 JavaThread::current()->thread_state() == _thread_in_vm,
925 "Java Thread is not running in vm");
926 // The threadStatus is only present starting in 1.5
927 if (_thread_status_offset > 0) {
928 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
929 } else {
930 // All we can easily figure out is if it is alive, but that is
931 // enough info for a valid unknown status.
932 // These aren't restricted to valid set ThreadStatus values, so
933 // use JVMTI values and cast.
934 JavaThread* thr = java_lang_Thread::thread(java_thread);
935 if (thr == NULL) {
936 // the thread hasn't run yet or is in the process of exiting
937 return NEW;
938 }
939 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
940 }
941 }
944 jlong java_lang_Thread::thread_id(oop java_thread) {
945 // The thread ID field is only present starting in 1.5
946 if (_tid_offset > 0) {
947 return java_thread->long_field(_tid_offset);
948 } else {
949 return 0;
950 }
951 }
953 oop java_lang_Thread::park_blocker(oop java_thread) {
954 assert(JDK_Version::current().supports_thread_park_blocker() &&
955 _park_blocker_offset != 0, "Must support parkBlocker field");
957 if (_park_blocker_offset > 0) {
958 return java_thread->obj_field(_park_blocker_offset);
959 }
961 return NULL;
962 }
964 jlong java_lang_Thread::park_event(oop java_thread) {
965 if (_park_event_offset > 0) {
966 return java_thread->long_field(_park_event_offset);
967 }
968 return 0;
969 }
971 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
972 if (_park_event_offset > 0) {
973 java_thread->long_field_put(_park_event_offset, ptr);
974 return true;
975 }
976 return false;
977 }
980 const char* java_lang_Thread::thread_status_name(oop java_thread) {
981 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
982 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
983 switch (status) {
984 case NEW : return "NEW";
985 case RUNNABLE : return "RUNNABLE";
986 case SLEEPING : return "TIMED_WAITING (sleeping)";
987 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
988 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
989 case PARKED : return "WAITING (parking)";
990 case PARKED_TIMED : return "TIMED_WAITING (parking)";
991 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
992 case TERMINATED : return "TERMINATED";
993 default : return "UNKNOWN";
994 };
995 }
996 int java_lang_ThreadGroup::_parent_offset = 0;
997 int java_lang_ThreadGroup::_name_offset = 0;
998 int java_lang_ThreadGroup::_threads_offset = 0;
999 int java_lang_ThreadGroup::_groups_offset = 0;
1000 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1001 int java_lang_ThreadGroup::_destroyed_offset = 0;
1002 int java_lang_ThreadGroup::_daemon_offset = 0;
1003 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1004 int java_lang_ThreadGroup::_nthreads_offset = 0;
1005 int java_lang_ThreadGroup::_ngroups_offset = 0;
1007 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1008 assert(java_thread_group->is_oop(), "thread group must be oop");
1009 return java_thread_group->obj_field(_parent_offset);
1010 }
1012 // ("name as oop" accessor is not necessary)
1014 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1015 oop name = java_thread_group->obj_field(_name_offset);
1016 // ThreadGroup.name can be null
1017 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1018 }
1020 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1021 assert(java_thread_group->is_oop(), "thread group must be oop");
1022 return java_thread_group->int_field(_nthreads_offset);
1023 }
1025 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1026 oop threads = java_thread_group->obj_field(_threads_offset);
1027 assert(threads != NULL, "threadgroups should have threads");
1028 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1029 return objArrayOop(threads);
1030 }
1032 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1033 assert(java_thread_group->is_oop(), "thread group must be oop");
1034 return java_thread_group->int_field(_ngroups_offset);
1035 }
1037 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1038 oop groups = java_thread_group->obj_field(_groups_offset);
1039 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1040 return objArrayOop(groups);
1041 }
1043 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1044 assert(java_thread_group->is_oop(), "thread group must be oop");
1045 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1046 }
1048 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1049 assert(java_thread_group->is_oop(), "thread group must be oop");
1050 return java_thread_group->bool_field(_destroyed_offset) != 0;
1051 }
1053 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1054 assert(java_thread_group->is_oop(), "thread group must be oop");
1055 return java_thread_group->bool_field(_daemon_offset) != 0;
1056 }
1058 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1059 assert(java_thread_group->is_oop(), "thread group must be oop");
1060 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1061 }
1063 void java_lang_ThreadGroup::compute_offsets() {
1064 assert(_parent_offset == 0, "offsets should be initialized only once");
1066 Klass* k = SystemDictionary::ThreadGroup_klass();
1068 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1069 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1070 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1071 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1072 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1073 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1074 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1075 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1076 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1077 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1078 }
1080 oop java_lang_Throwable::unassigned_stacktrace() {
1081 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1082 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1083 if (UseCompressedOops) {
1084 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1085 } else {
1086 return oopDesc::load_decode_heap_oop((oop*)addr);
1087 }
1088 }
1090 oop java_lang_Throwable::backtrace(oop throwable) {
1091 return throwable->obj_field_acquire(backtrace_offset);
1092 }
1095 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1096 throwable->release_obj_field_put(backtrace_offset, value);
1097 }
1100 oop java_lang_Throwable::message(oop throwable) {
1101 return throwable->obj_field(detailMessage_offset);
1102 }
1105 oop java_lang_Throwable::message(Handle throwable) {
1106 return throwable->obj_field(detailMessage_offset);
1107 }
1110 void java_lang_Throwable::set_message(oop throwable, oop value) {
1111 throwable->obj_field_put(detailMessage_offset, value);
1112 }
1115 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1116 throwable->obj_field_put(stackTrace_offset, st_element_array);
1117 }
1119 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1120 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1121 set_stacktrace(throwable, NULL);
1122 }
1125 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1126 ResourceMark rm;
1127 Klass* k = throwable->klass();
1128 assert(k != NULL, "just checking");
1129 st->print("%s", InstanceKlass::cast(k)->external_name());
1130 oop msg = message(throwable);
1131 if (msg != NULL) {
1132 st->print(": %s", java_lang_String::as_utf8_string(msg));
1133 }
1134 }
1137 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1138 ResourceMark rm;
1139 Klass* k = throwable->klass();
1140 assert(k != NULL, "just checking");
1141 st->print("%s", InstanceKlass::cast(k)->external_name());
1142 oop msg = message(throwable);
1143 if (msg != NULL) {
1144 st->print(": %s", java_lang_String::as_utf8_string(msg));
1145 }
1146 }
1148 // Print stack trace element to resource allocated buffer
1149 char* java_lang_Throwable::print_stack_element_to_buffer(Method* method, int bci) {
1150 // Get strings and string lengths
1151 InstanceKlass* klass = method->method_holder();
1152 const char* klass_name = klass->external_name();
1153 int buf_len = (int)strlen(klass_name);
1154 char* source_file_name;
1155 if (klass->source_file_name() == NULL) {
1156 source_file_name = NULL;
1157 } else {
1158 source_file_name = klass->source_file_name()->as_C_string();
1159 buf_len += (int)strlen(source_file_name);
1160 }
1161 char* method_name = method->name()->as_C_string();
1162 buf_len += (int)strlen(method_name);
1164 // Allocate temporary buffer with extra space for formatting and line number
1165 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1167 // Print stack trace line in buffer
1168 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1169 if (method->is_native()) {
1170 strcat(buf, "(Native Method)");
1171 } else {
1172 int line_number = method->line_number_from_bci(bci);
1173 if (source_file_name != NULL && (line_number != -1)) {
1174 // Sourcename and linenumber
1175 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1176 } else if (source_file_name != NULL) {
1177 // Just sourcename
1178 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1179 } else {
1180 // Neither soucename and linenumber
1181 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1182 }
1183 nmethod* nm = method->code();
1184 if (WizardMode && nm != NULL) {
1185 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1186 }
1187 }
1189 return buf;
1190 }
1193 void java_lang_Throwable::print_stack_element(Handle stream, Method* method, int bci) {
1194 ResourceMark rm;
1195 char* buf = print_stack_element_to_buffer(method, bci);
1196 print_to_stream(stream, buf);
1197 }
1199 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
1200 ResourceMark rm;
1201 char* buf = print_stack_element_to_buffer(method, bci);
1202 st->print_cr("%s", buf);
1203 }
1205 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1206 if (stream.is_null()) {
1207 tty->print_cr("%s", str);
1208 } else {
1209 EXCEPTION_MARK;
1210 JavaValue result(T_VOID);
1211 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1212 if (!HAS_PENDING_EXCEPTION) {
1213 JavaCalls::call_virtual(&result,
1214 stream,
1215 KlassHandle(THREAD, stream->klass()),
1216 vmSymbols::println_name(),
1217 vmSymbols::char_array_void_signature(),
1218 arg,
1219 THREAD);
1220 }
1221 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1222 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1223 }
1225 }
1228 const char* java_lang_Throwable::no_stack_trace_message() {
1229 return "\t<<no stack trace available>>";
1230 }
1233 // Currently used only for exceptions occurring during startup
1234 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1235 Thread *THREAD = Thread::current();
1236 Handle h_throwable(THREAD, throwable);
1237 while (h_throwable.not_null()) {
1238 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1239 if (result.is_null()) {
1240 st->print_cr(no_stack_trace_message());
1241 return;
1242 }
1244 while (result.not_null()) {
1245 typeArrayHandle methods (THREAD,
1246 typeArrayOop(result->obj_at(trace_methods_offset)));
1247 typeArrayHandle bcis (THREAD,
1248 typeArrayOop(result->obj_at(trace_bcis_offset)));
1250 if (methods.is_null() || bcis.is_null()) {
1251 st->print_cr(no_stack_trace_message());
1252 return;
1253 }
1255 int length = methods()->length();
1256 for (int index = 0; index < length; index++) {
1257 Method* method = ((Method*)methods()->metadata_at(index));
1258 if (method == NULL) goto handle_cause;
1259 int bci = bcis->ushort_at(index);
1260 print_stack_element(st, method, bci);
1261 }
1262 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1263 }
1264 handle_cause:
1265 {
1266 EXCEPTION_MARK;
1267 JavaValue result(T_OBJECT);
1268 JavaCalls::call_virtual(&result,
1269 h_throwable,
1270 KlassHandle(THREAD, h_throwable->klass()),
1271 vmSymbols::getCause_name(),
1272 vmSymbols::void_throwable_signature(),
1273 THREAD);
1274 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1275 if (HAS_PENDING_EXCEPTION) {
1276 CLEAR_PENDING_EXCEPTION;
1277 h_throwable = Handle();
1278 } else {
1279 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1280 if (h_throwable.not_null()) {
1281 st->print("Caused by: ");
1282 print(h_throwable, st);
1283 st->cr();
1284 }
1285 }
1286 }
1287 }
1288 }
1291 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1292 // Note: this is no longer used in Merlin, but we support it for compatibility.
1293 Thread *thread = Thread::current();
1294 Handle stream(thread, print_stream);
1295 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1296 if (result.is_null()) {
1297 print_to_stream(stream, no_stack_trace_message());
1298 return;
1299 }
1301 while (result.not_null()) {
1302 typeArrayHandle methods(thread,
1303 typeArrayOop(result->obj_at(trace_methods_offset)));
1304 typeArrayHandle bcis (thread,
1305 typeArrayOop(result->obj_at(trace_bcis_offset)));
1307 if (methods.is_null() || bcis.is_null()) {
1308 print_to_stream(stream, no_stack_trace_message());
1309 return;
1310 }
1312 int length = methods()->length();
1313 for (int index = 0; index < length; index++) {
1314 Method* method = ((Method*)methods()->metadata_at(index));
1315 if (method == NULL) return;
1316 int bci = bcis->ushort_at(index);
1317 print_stack_element(stream, method, bci);
1318 }
1319 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1320 }
1321 }
1323 // This class provides a simple wrapper over the internal structure of
1324 // exception backtrace to insulate users of the backtrace from needing
1325 // to know what it looks like.
1326 class BacktraceBuilder: public StackObj {
1327 private:
1328 Handle _backtrace;
1329 objArrayOop _head;
1330 typeArrayOop _methods;
1331 typeArrayOop _bcis;
1332 objArrayOop _mirrors;
1333 int _index;
1334 No_Safepoint_Verifier _nsv;
1336 public:
1338 enum {
1339 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1340 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1341 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1342 trace_next_offset = java_lang_Throwable::trace_next_offset,
1343 trace_size = java_lang_Throwable::trace_size,
1344 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1345 };
1347 // constructor for new backtrace
1348 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1349 expand(CHECK);
1350 _backtrace = _head;
1351 _index = 0;
1352 }
1354 void expand(TRAPS) {
1355 objArrayHandle old_head(THREAD, _head);
1356 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1358 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1359 objArrayHandle new_head(THREAD, head);
1361 typeArrayOop methods = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1362 typeArrayHandle new_methods(THREAD, methods);
1364 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1365 typeArrayHandle new_bcis(THREAD, bcis);
1367 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1368 objArrayHandle new_mirrors(THREAD, mirrors);
1370 if (!old_head.is_null()) {
1371 old_head->obj_at_put(trace_next_offset, new_head());
1372 }
1373 new_head->obj_at_put(trace_methods_offset, new_methods());
1374 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1375 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1377 _head = new_head();
1378 _methods = new_methods();
1379 _bcis = new_bcis();
1380 _mirrors = new_mirrors();
1381 _index = 0;
1382 }
1384 oop backtrace() {
1385 return _backtrace();
1386 }
1388 inline void push(Method* method, int bci, TRAPS) {
1389 // Smear the -1 bci to 0 since the array only holds unsigned
1390 // shorts. The later line number lookup would just smear the -1
1391 // to a 0 even if it could be recorded.
1392 if (bci == SynchronizationEntryBCI) bci = 0;
1393 assert(bci == (jushort)bci, "doesn't fit");
1395 if (_index >= trace_chunk_size) {
1396 methodHandle mhandle(THREAD, method);
1397 expand(CHECK);
1398 method = mhandle();
1399 }
1401 _methods->metadata_at_put(_index, method);
1402 _bcis->ushort_at_put(_index, bci);
1403 // we need to save the mirrors in the backtrace to keep the methods from
1404 // being unloaded if their class loader is unloaded while we still have
1405 // this stack trace.
1406 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1407 _index++;
1408 }
1410 Method* current_method() {
1411 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1412 return ((Method*)_methods->metadata_at(_index));
1413 }
1415 jushort current_bci() {
1416 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1417 return _bcis->ushort_at(_index);
1418 }
1419 };
1422 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1423 if (!StackTraceInThrowable) return;
1424 ResourceMark rm(THREAD);
1426 // Start out by clearing the backtrace for this object, in case the VM
1427 // runs out of memory while allocating the stack trace
1428 set_backtrace(throwable(), NULL);
1429 if (JDK_Version::is_gte_jdk14x_version()) {
1430 // New since 1.4, clear lazily constructed Java level stacktrace if
1431 // refilling occurs
1432 // This is unnecessary in 1.7+ but harmless
1433 clear_stacktrace(throwable());
1434 }
1436 int max_depth = MaxJavaStackTraceDepth;
1437 JavaThread* thread = (JavaThread*)THREAD;
1438 BacktraceBuilder bt(CHECK);
1440 // If there is no Java frame just return the method that was being called
1441 // with bci 0
1442 if (!thread->has_last_Java_frame()) {
1443 if (max_depth >= 1 && method() != NULL) {
1444 bt.push(method(), 0, CHECK);
1445 set_backtrace(throwable(), bt.backtrace());
1446 }
1447 return;
1448 }
1450 // Instead of using vframe directly, this version of fill_in_stack_trace
1451 // basically handles everything by hand. This significantly improved the
1452 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1453 // See bug 6333838 for more details.
1454 // The "ASSERT" here is to verify this method generates the exactly same stack
1455 // trace as utilizing vframe.
1456 #ifdef ASSERT
1457 vframeStream st(thread);
1458 methodHandle st_method(THREAD, st.method());
1459 #endif
1460 int total_count = 0;
1461 RegisterMap map(thread, false);
1462 int decode_offset = 0;
1463 nmethod* nm = NULL;
1464 bool skip_fillInStackTrace_check = false;
1465 bool skip_throwableInit_check = false;
1466 bool skip_hidden = !ShowHiddenFrames;
1468 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1469 Method* method = NULL;
1470 int bci = 0;
1472 // Compiled java method case.
1473 if (decode_offset != 0) {
1474 DebugInfoReadStream stream(nm, decode_offset);
1475 decode_offset = stream.read_int();
1476 method = (Method*)nm->metadata_at(stream.read_int());
1477 bci = stream.read_bci();
1478 } else {
1479 if (fr.is_first_frame()) break;
1480 address pc = fr.pc();
1481 if (fr.is_interpreted_frame()) {
1482 intptr_t bcx = fr.interpreter_frame_bcx();
1483 method = fr.interpreter_frame_method();
1484 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1485 fr = fr.sender(&map);
1486 } else {
1487 CodeBlob* cb = fr.cb();
1488 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1489 // but non nmethod
1490 fr = fr.sender(&map);
1491 if (cb == NULL || !cb->is_nmethod()) {
1492 continue;
1493 }
1494 nm = (nmethod*)cb;
1495 if (nm->method()->is_native()) {
1496 method = nm->method();
1497 bci = 0;
1498 } else {
1499 PcDesc* pd = nm->pc_desc_at(pc);
1500 decode_offset = pd->scope_decode_offset();
1501 // if decode_offset is not equal to 0, it will execute the
1502 // "compiled java method case" at the beginning of the loop.
1503 continue;
1504 }
1505 }
1506 }
1507 #ifdef ASSERT
1508 assert(st_method() == method && st.bci() == bci,
1509 "Wrong stack trace");
1510 st.next();
1511 // vframeStream::method isn't GC-safe so store off a copy
1512 // of the Method* in case we GC.
1513 if (!st.at_end()) {
1514 st_method = st.method();
1515 }
1516 #endif
1518 // the format of the stacktrace will be:
1519 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1520 // - 0 or more <init> methods for the exception class (skipped)
1521 // - rest of the stack
1523 if (!skip_fillInStackTrace_check) {
1524 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1525 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1526 throwable->is_a(method->method_holder())) {
1527 continue;
1528 }
1529 else {
1530 skip_fillInStackTrace_check = true; // gone past them all
1531 }
1532 }
1533 if (!skip_throwableInit_check) {
1534 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1536 // skip <init> methods of the exception class and superclasses
1537 // This is simlar to classic VM.
1538 if (method->name() == vmSymbols::object_initializer_name() &&
1539 throwable->is_a(method->method_holder())) {
1540 continue;
1541 } else {
1542 // there are none or we've seen them all - either way stop checking
1543 skip_throwableInit_check = true;
1544 }
1545 }
1546 if (method->is_hidden()) {
1547 if (skip_hidden) continue;
1548 }
1549 bt.push(method, bci, CHECK);
1550 total_count++;
1551 }
1553 // Put completed stack trace into throwable object
1554 set_backtrace(throwable(), bt.backtrace());
1555 }
1557 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1558 // No-op if stack trace is disabled
1559 if (!StackTraceInThrowable) {
1560 return;
1561 }
1563 // Disable stack traces for some preallocated out of memory errors
1564 if (!Universe::should_fill_in_stack_trace(throwable)) {
1565 return;
1566 }
1568 PRESERVE_EXCEPTION_MARK;
1570 JavaThread* thread = JavaThread::active();
1571 fill_in_stack_trace(throwable, method, thread);
1572 // ignore exceptions thrown during stack trace filling
1573 CLEAR_PENDING_EXCEPTION;
1574 }
1576 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1577 // Allocate stack trace - backtrace is created but not filled in
1579 // No-op if stack trace is disabled
1580 if (!StackTraceInThrowable) return;
1582 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1583 objArrayHandle backtrace (THREAD, h_oop);
1584 typeArrayOop m_oop = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1585 typeArrayHandle methods (THREAD, m_oop);
1586 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1587 typeArrayHandle bcis(THREAD, b);
1588 objArrayOop mirror_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1589 objArrayHandle mirrors (THREAD, mirror_oop);
1591 // backtrace has space for one chunk (next is NULL)
1592 backtrace->obj_at_put(trace_methods_offset, methods());
1593 backtrace->obj_at_put(trace_bcis_offset, bcis());
1594 backtrace->obj_at_put(trace_mirrors_offset, mirrors());
1595 set_backtrace(throwable(), backtrace());
1596 }
1599 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1600 // Fill in stack trace into preallocated backtrace (no GC)
1602 // No-op if stack trace is disabled
1603 if (!StackTraceInThrowable) return;
1605 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1607 objArrayOop backtrace = (objArrayOop)java_lang_Throwable::backtrace(throwable());
1608 assert(backtrace != NULL, "backtrace not preallocated");
1610 oop m = backtrace->obj_at(trace_methods_offset);
1611 typeArrayOop methods = typeArrayOop(m);
1612 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1614 oop b = backtrace->obj_at(trace_bcis_offset);
1615 typeArrayOop bcis = typeArrayOop(b);
1616 assert(bcis != NULL, "bci array not preallocated");
1618 oop mr = backtrace->obj_at(trace_mirrors_offset);
1619 objArrayOop mirrors = objArrayOop(mr);
1620 assert(mirrors != NULL, "bci array not preallocated");
1622 assert(methods->length() == bcis->length() &&
1623 methods->length() == mirrors->length(),
1624 "method and bci arrays should match");
1626 JavaThread* thread = JavaThread::current();
1627 ResourceMark rm(thread);
1628 vframeStream st(thread);
1630 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1631 // methods as preallocated errors aren't created by "java" code.
1633 // fill in as much stack trace as possible
1634 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1635 int chunk_count = 0;
1637 for (;!st.at_end(); st.next()) {
1638 // Add entry and smear the -1 bci to 0 since the array only holds
1639 // unsigned shorts. The later line number lookup would just smear
1640 // the -1 to a 0 even if it could be recorded.
1641 int bci = st.bci();
1642 if (bci == SynchronizationEntryBCI) bci = 0;
1643 assert(bci == (jushort)bci, "doesn't fit");
1644 bcis->ushort_at_put(chunk_count, bci);
1645 methods->metadata_at_put(chunk_count, st.method());
1646 mirrors->obj_at_put(chunk_count,
1647 st.method()->method_holder()->java_mirror());
1649 chunk_count++;
1651 // Bail-out for deep stacks
1652 if (chunk_count >= max_chunks) break;
1653 }
1655 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1656 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1657 // can be removed in a JDK using this JVM version
1658 if (JDK_Version::is_gte_jdk17x_version()) {
1659 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1660 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1661 }
1663 }
1666 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1667 if (throwable == NULL) {
1668 THROW_0(vmSymbols::java_lang_NullPointerException());
1669 }
1670 objArrayOop chunk = objArrayOop(backtrace(throwable));
1671 int depth = 0;
1672 if (chunk != NULL) {
1673 // Iterate over chunks and count full ones
1674 while (true) {
1675 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1676 if (next == NULL) break;
1677 depth += trace_chunk_size;
1678 chunk = next;
1679 }
1680 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1681 // Count element in remaining partial chunk
1682 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1683 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1684 assert(methods != NULL && bcis != NULL, "sanity check");
1685 for (int i = 0; i < methods->length(); i++) {
1686 if (methods->metadata_at(i) == NULL) break;
1687 depth++;
1688 }
1689 }
1690 return depth;
1691 }
1694 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1695 if (throwable == NULL) {
1696 THROW_0(vmSymbols::java_lang_NullPointerException());
1697 }
1698 if (index < 0) {
1699 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1700 }
1701 // Compute how many chunks to skip and index into actual chunk
1702 objArrayOop chunk = objArrayOop(backtrace(throwable));
1703 int skip_chunks = index / trace_chunk_size;
1704 int chunk_index = index % trace_chunk_size;
1705 while (chunk != NULL && skip_chunks > 0) {
1706 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1707 skip_chunks--;
1708 }
1709 if (chunk == NULL) {
1710 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1711 }
1712 // Get method,bci from chunk
1713 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1714 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1715 assert(methods != NULL && bcis != NULL, "sanity check");
1716 methodHandle method(THREAD, ((Method*)methods->metadata_at(chunk_index)));
1717 int bci = bcis->ushort_at(chunk_index);
1718 // Chunk can be partial full
1719 if (method.is_null()) {
1720 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1721 }
1723 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1724 return element;
1725 }
1727 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1728 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1729 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1731 // Allocate java.lang.StackTraceElement instance
1732 Klass* k = SystemDictionary::StackTraceElement_klass();
1733 assert(k != NULL, "must be loaded in 1.4+");
1734 instanceKlassHandle ik (THREAD, k);
1735 if (ik->should_be_initialized()) {
1736 ik->initialize(CHECK_0);
1737 }
1739 Handle element = ik->allocate_instance_handle(CHECK_0);
1740 // Fill in class name
1741 ResourceMark rm(THREAD);
1742 const char* str = method->method_holder()->external_name();
1743 oop classname = StringTable::intern((char*) str, CHECK_0);
1744 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1745 // Fill in method name
1746 oop methodname = StringTable::intern(method->name(), CHECK_0);
1747 java_lang_StackTraceElement::set_methodName(element(), methodname);
1748 // Fill in source file name
1749 Symbol* source = method->method_holder()->source_file_name();
1750 if (ShowHiddenFrames && source == NULL)
1751 source = vmSymbols::unknown_class_name();
1752 oop filename = StringTable::intern(source, CHECK_0);
1753 java_lang_StackTraceElement::set_fileName(element(), filename);
1754 // File in source line number
1755 int line_number;
1756 if (method->is_native()) {
1757 // Negative value different from -1 below, enabling Java code in
1758 // class java.lang.StackTraceElement to distinguish "native" from
1759 // "no LineNumberTable".
1760 line_number = -2;
1761 } else {
1762 // Returns -1 if no LineNumberTable, and otherwise actual line number
1763 line_number = method->line_number_from_bci(bci);
1764 if (line_number == -1 && ShowHiddenFrames) {
1765 line_number = bci + 1000000;
1766 }
1767 }
1768 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1770 return element();
1771 }
1774 void java_lang_reflect_AccessibleObject::compute_offsets() {
1775 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1776 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1777 }
1779 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1780 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1781 return (jboolean) reflect->bool_field(override_offset);
1782 }
1784 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1785 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1786 reflect->bool_field_put(override_offset, (int) value);
1787 }
1789 void java_lang_reflect_Method::compute_offsets() {
1790 Klass* k = SystemDictionary::reflect_Method_klass();
1791 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1792 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1793 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1794 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1795 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1796 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1797 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1798 // The generic signature and annotations fields are only present in 1.5
1799 signature_offset = -1;
1800 annotations_offset = -1;
1801 parameter_annotations_offset = -1;
1802 annotation_default_offset = -1;
1803 type_annotations_offset = -1;
1804 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1805 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1806 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1807 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1808 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1809 }
1811 Handle java_lang_reflect_Method::create(TRAPS) {
1812 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1813 Klass* klass = SystemDictionary::reflect_Method_klass();
1814 // This class is eagerly initialized during VM initialization, since we keep a refence
1815 // to one of the methods
1816 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1817 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1818 }
1820 oop java_lang_reflect_Method::clazz(oop reflect) {
1821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1822 return reflect->obj_field(clazz_offset);
1823 }
1825 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1826 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1827 reflect->obj_field_put(clazz_offset, value);
1828 }
1830 int java_lang_reflect_Method::slot(oop reflect) {
1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1832 return reflect->int_field(slot_offset);
1833 }
1835 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1836 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1837 reflect->int_field_put(slot_offset, value);
1838 }
1840 oop java_lang_reflect_Method::name(oop method) {
1841 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1842 return method->obj_field(name_offset);
1843 }
1845 void java_lang_reflect_Method::set_name(oop method, oop value) {
1846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1847 method->obj_field_put(name_offset, value);
1848 }
1850 oop java_lang_reflect_Method::return_type(oop method) {
1851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1852 return method->obj_field(returnType_offset);
1853 }
1855 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1856 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1857 method->obj_field_put(returnType_offset, value);
1858 }
1860 oop java_lang_reflect_Method::parameter_types(oop method) {
1861 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1862 return method->obj_field(parameterTypes_offset);
1863 }
1865 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1866 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1867 method->obj_field_put(parameterTypes_offset, value);
1868 }
1870 oop java_lang_reflect_Method::exception_types(oop method) {
1871 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1872 return method->obj_field(exceptionTypes_offset);
1873 }
1875 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1876 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1877 method->obj_field_put(exceptionTypes_offset, value);
1878 }
1880 int java_lang_reflect_Method::modifiers(oop method) {
1881 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1882 return method->int_field(modifiers_offset);
1883 }
1885 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1886 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1887 method->int_field_put(modifiers_offset, value);
1888 }
1890 bool java_lang_reflect_Method::has_signature_field() {
1891 return (signature_offset >= 0);
1892 }
1894 oop java_lang_reflect_Method::signature(oop method) {
1895 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1896 assert(has_signature_field(), "signature field must be present");
1897 return method->obj_field(signature_offset);
1898 }
1900 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1901 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1902 assert(has_signature_field(), "signature field must be present");
1903 method->obj_field_put(signature_offset, value);
1904 }
1906 bool java_lang_reflect_Method::has_annotations_field() {
1907 return (annotations_offset >= 0);
1908 }
1910 oop java_lang_reflect_Method::annotations(oop method) {
1911 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1912 assert(has_annotations_field(), "annotations field must be present");
1913 return method->obj_field(annotations_offset);
1914 }
1916 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1918 assert(has_annotations_field(), "annotations field must be present");
1919 method->obj_field_put(annotations_offset, value);
1920 }
1922 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1923 return (parameter_annotations_offset >= 0);
1924 }
1926 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1927 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1928 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1929 return method->obj_field(parameter_annotations_offset);
1930 }
1932 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1934 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1935 method->obj_field_put(parameter_annotations_offset, value);
1936 }
1938 bool java_lang_reflect_Method::has_annotation_default_field() {
1939 return (annotation_default_offset >= 0);
1940 }
1942 oop java_lang_reflect_Method::annotation_default(oop method) {
1943 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1944 assert(has_annotation_default_field(), "annotation default field must be present");
1945 return method->obj_field(annotation_default_offset);
1946 }
1948 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1950 assert(has_annotation_default_field(), "annotation default field must be present");
1951 method->obj_field_put(annotation_default_offset, value);
1952 }
1954 bool java_lang_reflect_Method::has_type_annotations_field() {
1955 return (type_annotations_offset >= 0);
1956 }
1958 oop java_lang_reflect_Method::type_annotations(oop method) {
1959 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1960 assert(has_type_annotations_field(), "type_annotations field must be present");
1961 return method->obj_field(type_annotations_offset);
1962 }
1964 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
1965 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1966 assert(has_type_annotations_field(), "type_annotations field must be present");
1967 method->obj_field_put(type_annotations_offset, value);
1968 }
1970 void java_lang_reflect_Constructor::compute_offsets() {
1971 Klass* k = SystemDictionary::reflect_Constructor_klass();
1972 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1973 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1974 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1975 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1976 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1977 // The generic signature and annotations fields are only present in 1.5
1978 signature_offset = -1;
1979 annotations_offset = -1;
1980 parameter_annotations_offset = -1;
1981 type_annotations_offset = -1;
1982 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1983 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1984 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1985 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1986 }
1988 Handle java_lang_reflect_Constructor::create(TRAPS) {
1989 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1990 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1991 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1992 instanceKlassHandle klass (THREAD, k);
1993 // Ensure it is initialized
1994 klass->initialize(CHECK_NH);
1995 return klass->allocate_instance_handle(CHECK_NH);
1996 }
1998 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1999 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2000 return reflect->obj_field(clazz_offset);
2001 }
2003 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2004 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2005 reflect->obj_field_put(clazz_offset, value);
2006 }
2008 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2009 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2010 return constructor->obj_field(parameterTypes_offset);
2011 }
2013 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2014 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2015 constructor->obj_field_put(parameterTypes_offset, value);
2016 }
2018 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2019 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2020 return constructor->obj_field(exceptionTypes_offset);
2021 }
2023 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2024 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2025 constructor->obj_field_put(exceptionTypes_offset, value);
2026 }
2028 int java_lang_reflect_Constructor::slot(oop reflect) {
2029 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2030 return reflect->int_field(slot_offset);
2031 }
2033 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2034 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2035 reflect->int_field_put(slot_offset, value);
2036 }
2038 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2039 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2040 return constructor->int_field(modifiers_offset);
2041 }
2043 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2044 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2045 constructor->int_field_put(modifiers_offset, value);
2046 }
2048 bool java_lang_reflect_Constructor::has_signature_field() {
2049 return (signature_offset >= 0);
2050 }
2052 oop java_lang_reflect_Constructor::signature(oop constructor) {
2053 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2054 assert(has_signature_field(), "signature field must be present");
2055 return constructor->obj_field(signature_offset);
2056 }
2058 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2059 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2060 assert(has_signature_field(), "signature field must be present");
2061 constructor->obj_field_put(signature_offset, value);
2062 }
2064 bool java_lang_reflect_Constructor::has_annotations_field() {
2065 return (annotations_offset >= 0);
2066 }
2068 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2069 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2070 assert(has_annotations_field(), "annotations field must be present");
2071 return constructor->obj_field(annotations_offset);
2072 }
2074 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2075 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2076 assert(has_annotations_field(), "annotations field must be present");
2077 constructor->obj_field_put(annotations_offset, value);
2078 }
2080 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2081 return (parameter_annotations_offset >= 0);
2082 }
2084 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2085 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2086 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2087 return method->obj_field(parameter_annotations_offset);
2088 }
2090 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2091 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2092 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2093 method->obj_field_put(parameter_annotations_offset, value);
2094 }
2096 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2097 return (type_annotations_offset >= 0);
2098 }
2100 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2101 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2102 assert(has_type_annotations_field(), "type_annotations field must be present");
2103 return constructor->obj_field(type_annotations_offset);
2104 }
2106 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2107 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2108 assert(has_type_annotations_field(), "type_annotations field must be present");
2109 constructor->obj_field_put(type_annotations_offset, value);
2110 }
2112 void java_lang_reflect_Field::compute_offsets() {
2113 Klass* k = SystemDictionary::reflect_Field_klass();
2114 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2115 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2116 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2117 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2118 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2119 // The generic signature and annotations fields are only present in 1.5
2120 signature_offset = -1;
2121 annotations_offset = -1;
2122 type_annotations_offset = -1;
2123 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2124 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2125 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2126 }
2128 Handle java_lang_reflect_Field::create(TRAPS) {
2129 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2130 Symbol* name = vmSymbols::java_lang_reflect_Field();
2131 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2132 instanceKlassHandle klass (THREAD, k);
2133 // Ensure it is initialized
2134 klass->initialize(CHECK_NH);
2135 return klass->allocate_instance_handle(CHECK_NH);
2136 }
2138 oop java_lang_reflect_Field::clazz(oop reflect) {
2139 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2140 return reflect->obj_field(clazz_offset);
2141 }
2143 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2144 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2145 reflect->obj_field_put(clazz_offset, value);
2146 }
2148 oop java_lang_reflect_Field::name(oop field) {
2149 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2150 return field->obj_field(name_offset);
2151 }
2153 void java_lang_reflect_Field::set_name(oop field, oop value) {
2154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2155 field->obj_field_put(name_offset, value);
2156 }
2158 oop java_lang_reflect_Field::type(oop field) {
2159 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2160 return field->obj_field(type_offset);
2161 }
2163 void java_lang_reflect_Field::set_type(oop field, oop value) {
2164 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2165 field->obj_field_put(type_offset, value);
2166 }
2168 int java_lang_reflect_Field::slot(oop reflect) {
2169 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2170 return reflect->int_field(slot_offset);
2171 }
2173 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2174 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2175 reflect->int_field_put(slot_offset, value);
2176 }
2178 int java_lang_reflect_Field::modifiers(oop field) {
2179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2180 return field->int_field(modifiers_offset);
2181 }
2183 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2184 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2185 field->int_field_put(modifiers_offset, value);
2186 }
2188 bool java_lang_reflect_Field::has_signature_field() {
2189 return (signature_offset >= 0);
2190 }
2192 oop java_lang_reflect_Field::signature(oop field) {
2193 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2194 assert(has_signature_field(), "signature field must be present");
2195 return field->obj_field(signature_offset);
2196 }
2198 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2199 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2200 assert(has_signature_field(), "signature field must be present");
2201 field->obj_field_put(signature_offset, value);
2202 }
2204 bool java_lang_reflect_Field::has_annotations_field() {
2205 return (annotations_offset >= 0);
2206 }
2208 oop java_lang_reflect_Field::annotations(oop field) {
2209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2210 assert(has_annotations_field(), "annotations field must be present");
2211 return field->obj_field(annotations_offset);
2212 }
2214 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2215 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2216 assert(has_annotations_field(), "annotations field must be present");
2217 field->obj_field_put(annotations_offset, value);
2218 }
2220 bool java_lang_reflect_Field::has_type_annotations_field() {
2221 return (type_annotations_offset >= 0);
2222 }
2224 oop java_lang_reflect_Field::type_annotations(oop field) {
2225 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2226 assert(has_type_annotations_field(), "type_annotations field must be present");
2227 return field->obj_field(type_annotations_offset);
2228 }
2230 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2231 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2232 assert(has_type_annotations_field(), "type_annotations field must be present");
2233 field->obj_field_put(type_annotations_offset, value);
2234 }
2236 void sun_reflect_ConstantPool::compute_offsets() {
2237 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2238 // This null test can be removed post beta
2239 if (k != NULL) {
2240 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2241 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2242 }
2243 }
2245 void java_lang_reflect_Parameter::compute_offsets() {
2246 Klass* k = SystemDictionary::reflect_Parameter_klass();
2247 if(NULL != k) {
2248 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2249 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2250 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2251 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2252 }
2253 }
2255 Handle java_lang_reflect_Parameter::create(TRAPS) {
2256 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2257 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2258 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2259 instanceKlassHandle klass (THREAD, k);
2260 // Ensure it is initialized
2261 klass->initialize(CHECK_NH);
2262 return klass->allocate_instance_handle(CHECK_NH);
2263 }
2265 oop java_lang_reflect_Parameter::name(oop param) {
2266 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2267 return param->obj_field(name_offset);
2268 }
2270 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2271 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2272 param->obj_field_put(name_offset, value);
2273 }
2275 int java_lang_reflect_Parameter::modifiers(oop param) {
2276 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2277 return param->int_field(modifiers_offset);
2278 }
2280 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2281 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2282 param->int_field_put(modifiers_offset, value);
2283 }
2285 int java_lang_reflect_Parameter::index(oop param) {
2286 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2287 return param->int_field(index_offset);
2288 }
2290 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2291 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2292 param->int_field_put(index_offset, value);
2293 }
2295 oop java_lang_reflect_Parameter::executable(oop param) {
2296 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2297 return param->obj_field(executable_offset);
2298 }
2300 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2301 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2302 param->obj_field_put(executable_offset, value);
2303 }
2306 Handle sun_reflect_ConstantPool::create(TRAPS) {
2307 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2308 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2309 instanceKlassHandle klass (THREAD, k);
2310 // Ensure it is initialized
2311 klass->initialize(CHECK_NH);
2312 return klass->allocate_instance_handle(CHECK_NH);
2313 }
2316 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2317 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2318 oop mirror = value->pool_holder()->java_mirror();
2319 // Save the mirror to get back the constant pool.
2320 reflect->obj_field_put(_oop_offset, mirror);
2321 }
2323 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2324 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2326 oop mirror = reflect->obj_field(_oop_offset);
2327 Klass* k = java_lang_Class::as_Klass(mirror);
2328 assert(k->oop_is_instance(), "Must be");
2330 // Get the constant pool back from the klass. Since class redefinition
2331 // merges the new constant pool into the old, this is essentially the
2332 // same constant pool as the original. If constant pool merging is
2333 // no longer done in the future, this will have to change to save
2334 // the original.
2335 return InstanceKlass::cast(k)->constants();
2336 }
2338 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2339 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2340 // This null test can be removed post beta
2341 if (k != NULL) {
2342 compute_offset(_base_offset, k,
2343 vmSymbols::base_name(), vmSymbols::object_signature());
2344 }
2345 }
2347 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2348 Klass* k = SystemDictionary::box_klass(type);
2349 if (k == NULL) return NULL;
2350 instanceKlassHandle h (THREAD, k);
2351 if (!h->is_initialized()) h->initialize(CHECK_0);
2352 return h->allocate_instance(THREAD);
2353 }
2356 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2357 oop box = initialize_and_allocate(type, CHECK_0);
2358 if (box == NULL) return NULL;
2359 switch (type) {
2360 case T_BOOLEAN:
2361 box->bool_field_put(value_offset, value->z);
2362 break;
2363 case T_CHAR:
2364 box->char_field_put(value_offset, value->c);
2365 break;
2366 case T_FLOAT:
2367 box->float_field_put(value_offset, value->f);
2368 break;
2369 case T_DOUBLE:
2370 box->double_field_put(long_value_offset, value->d);
2371 break;
2372 case T_BYTE:
2373 box->byte_field_put(value_offset, value->b);
2374 break;
2375 case T_SHORT:
2376 box->short_field_put(value_offset, value->s);
2377 break;
2378 case T_INT:
2379 box->int_field_put(value_offset, value->i);
2380 break;
2381 case T_LONG:
2382 box->long_field_put(long_value_offset, value->j);
2383 break;
2384 default:
2385 return NULL;
2386 }
2387 return box;
2388 }
2391 BasicType java_lang_boxing_object::basic_type(oop box) {
2392 if (box == NULL) return T_ILLEGAL;
2393 BasicType type = SystemDictionary::box_klass_type(box->klass());
2394 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2395 return T_ILLEGAL;
2396 return type;
2397 }
2400 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2401 BasicType type = SystemDictionary::box_klass_type(box->klass());
2402 switch (type) {
2403 case T_BOOLEAN:
2404 value->z = box->bool_field(value_offset);
2405 break;
2406 case T_CHAR:
2407 value->c = box->char_field(value_offset);
2408 break;
2409 case T_FLOAT:
2410 value->f = box->float_field(value_offset);
2411 break;
2412 case T_DOUBLE:
2413 value->d = box->double_field(long_value_offset);
2414 break;
2415 case T_BYTE:
2416 value->b = box->byte_field(value_offset);
2417 break;
2418 case T_SHORT:
2419 value->s = box->short_field(value_offset);
2420 break;
2421 case T_INT:
2422 value->i = box->int_field(value_offset);
2423 break;
2424 case T_LONG:
2425 value->j = box->long_field(long_value_offset);
2426 break;
2427 default:
2428 return T_ILLEGAL;
2429 } // end switch
2430 return type;
2431 }
2434 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2435 BasicType type = SystemDictionary::box_klass_type(box->klass());
2436 switch (type) {
2437 case T_BOOLEAN:
2438 box->bool_field_put(value_offset, value->z);
2439 break;
2440 case T_CHAR:
2441 box->char_field_put(value_offset, value->c);
2442 break;
2443 case T_FLOAT:
2444 box->float_field_put(value_offset, value->f);
2445 break;
2446 case T_DOUBLE:
2447 box->double_field_put(long_value_offset, value->d);
2448 break;
2449 case T_BYTE:
2450 box->byte_field_put(value_offset, value->b);
2451 break;
2452 case T_SHORT:
2453 box->short_field_put(value_offset, value->s);
2454 break;
2455 case T_INT:
2456 box->int_field_put(value_offset, value->i);
2457 break;
2458 case T_LONG:
2459 box->long_field_put(long_value_offset, value->j);
2460 break;
2461 default:
2462 return T_ILLEGAL;
2463 } // end switch
2464 return type;
2465 }
2468 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2469 switch (type) {
2470 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2471 case T_CHAR: st->print("%d", value->c); break;
2472 case T_BYTE: st->print("%d", value->b); break;
2473 case T_SHORT: st->print("%d", value->s); break;
2474 case T_INT: st->print("%d", value->i); break;
2475 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2476 case T_FLOAT: st->print("%f", value->f); break;
2477 case T_DOUBLE: st->print("%lf", value->d); break;
2478 default: st->print("type %d?", type); break;
2479 }
2480 }
2483 // Support for java_lang_ref_Reference
2484 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2485 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2486 address addr = ik->static_field_addr(static_lock_offset);
2487 return (HeapWord*) addr;
2488 }
2490 oop java_lang_ref_Reference::pending_list_lock() {
2491 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2492 address addr = ik->static_field_addr(static_lock_offset);
2493 if (UseCompressedOops) {
2494 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2495 } else {
2496 return oopDesc::load_decode_heap_oop((oop*)addr);
2497 }
2498 }
2500 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2501 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2502 address addr = ik->static_field_addr(static_pending_offset);
2503 // XXX This might not be HeapWord aligned, almost rather be char *.
2504 return (HeapWord*)addr;
2505 }
2507 oop java_lang_ref_Reference::pending_list() {
2508 char *addr = (char *)pending_list_addr();
2509 if (UseCompressedOops) {
2510 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2511 } else {
2512 return oopDesc::load_decode_heap_oop((oop*)addr);
2513 }
2514 }
2517 // Support for java_lang_ref_SoftReference
2519 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2520 return ref->long_field(timestamp_offset);
2521 }
2523 jlong java_lang_ref_SoftReference::clock() {
2524 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2525 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2526 return *offset;
2527 }
2529 void java_lang_ref_SoftReference::set_clock(jlong value) {
2530 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2531 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2532 *offset = value;
2533 }
2536 // Support for java_lang_invoke_MethodHandle
2538 int java_lang_invoke_MethodHandle::_type_offset;
2539 int java_lang_invoke_MethodHandle::_form_offset;
2541 int java_lang_invoke_MemberName::_clazz_offset;
2542 int java_lang_invoke_MemberName::_name_offset;
2543 int java_lang_invoke_MemberName::_type_offset;
2544 int java_lang_invoke_MemberName::_flags_offset;
2545 int java_lang_invoke_MemberName::_vmtarget_offset;
2546 int java_lang_invoke_MemberName::_vmloader_offset;
2547 int java_lang_invoke_MemberName::_vmindex_offset;
2549 int java_lang_invoke_LambdaForm::_vmentry_offset;
2551 void java_lang_invoke_MethodHandle::compute_offsets() {
2552 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2553 if (klass_oop != NULL && EnableInvokeDynamic) {
2554 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2555 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2556 if (_form_offset == 0) {
2557 EnableInvokeDynamic = false;
2558 }
2559 }
2560 }
2562 void java_lang_invoke_MemberName::compute_offsets() {
2563 Klass* klass_oop = SystemDictionary::MemberName_klass();
2564 if (klass_oop != NULL && EnableInvokeDynamic) {
2565 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2566 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2567 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2568 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2569 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2570 }
2571 }
2573 void java_lang_invoke_LambdaForm::compute_offsets() {
2574 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2575 if (klass_oop != NULL && EnableInvokeDynamic) {
2576 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2577 }
2578 }
2580 oop java_lang_invoke_MethodHandle::type(oop mh) {
2581 return mh->obj_field(_type_offset);
2582 }
2584 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2585 mh->obj_field_put(_type_offset, mtype);
2586 }
2588 oop java_lang_invoke_MethodHandle::form(oop mh) {
2589 assert(_form_offset != 0, "");
2590 return mh->obj_field(_form_offset);
2591 }
2593 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2594 assert(_form_offset != 0, "");
2595 mh->obj_field_put(_form_offset, lform);
2596 }
2598 /// MemberName accessors
2600 oop java_lang_invoke_MemberName::clazz(oop mname) {
2601 assert(is_instance(mname), "wrong type");
2602 return mname->obj_field(_clazz_offset);
2603 }
2605 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2606 assert(is_instance(mname), "wrong type");
2607 mname->obj_field_put(_clazz_offset, clazz);
2608 }
2610 oop java_lang_invoke_MemberName::name(oop mname) {
2611 assert(is_instance(mname), "wrong type");
2612 return mname->obj_field(_name_offset);
2613 }
2615 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2616 assert(is_instance(mname), "wrong type");
2617 mname->obj_field_put(_name_offset, name);
2618 }
2620 oop java_lang_invoke_MemberName::type(oop mname) {
2621 assert(is_instance(mname), "wrong type");
2622 return mname->obj_field(_type_offset);
2623 }
2625 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2626 assert(is_instance(mname), "wrong type");
2627 mname->obj_field_put(_type_offset, type);
2628 }
2630 int java_lang_invoke_MemberName::flags(oop mname) {
2631 assert(is_instance(mname), "wrong type");
2632 return mname->int_field(_flags_offset);
2633 }
2635 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2636 assert(is_instance(mname), "wrong type");
2637 mname->int_field_put(_flags_offset, flags);
2638 }
2640 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2641 assert(is_instance(mname), "wrong type");
2642 return (Metadata*)mname->address_field(_vmtarget_offset);
2643 }
2645 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2646 assert(is_instance(mname), "wrong type");
2647 // check the type of the vmtarget
2648 oop dependency = NULL;
2649 if (ref != NULL) {
2650 switch (flags(mname) & (MN_IS_METHOD |
2651 MN_IS_CONSTRUCTOR |
2652 MN_IS_FIELD)) {
2653 case MN_IS_METHOD:
2654 case MN_IS_CONSTRUCTOR:
2655 assert(ref->is_method(), "should be a method");
2656 dependency = ((Method*)ref)->method_holder()->java_mirror();
2657 break;
2658 case MN_IS_FIELD:
2659 assert(ref->is_klass(), "should be a class");
2660 dependency = ((Klass*)ref)->java_mirror();
2661 break;
2662 default:
2663 ShouldNotReachHere();
2664 }
2665 }
2666 mname->address_field_put(_vmtarget_offset, (address)ref);
2667 // Add a reference to the loader (actually mirror because anonymous classes will not have
2668 // distinct loaders) to ensure the metadata is kept alive
2669 // This mirror may be different than the one in clazz field.
2670 mname->obj_field_put(_vmloader_offset, dependency);
2671 }
2673 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2674 assert(is_instance(mname), "wrong type");
2675 return (intptr_t) mname->address_field(_vmindex_offset);
2676 }
2678 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2679 assert(is_instance(mname), "wrong type");
2680 mname->address_field_put(_vmindex_offset, (address) index);
2681 }
2683 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2684 assert(is_instance(lform), "wrong type");
2685 return lform->obj_field(_vmentry_offset);
2686 }
2689 // Support for java_lang_invoke_MethodType
2691 int java_lang_invoke_MethodType::_rtype_offset;
2692 int java_lang_invoke_MethodType::_ptypes_offset;
2694 void java_lang_invoke_MethodType::compute_offsets() {
2695 Klass* k = SystemDictionary::MethodType_klass();
2696 if (k != NULL) {
2697 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2698 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2699 }
2700 }
2702 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2703 st->print("(");
2704 objArrayOop pts = ptypes(mt);
2705 for (int i = 0, limit = pts->length(); i < limit; i++) {
2706 java_lang_Class::print_signature(pts->obj_at(i), st);
2707 }
2708 st->print(")");
2709 java_lang_Class::print_signature(rtype(mt), st);
2710 }
2712 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2713 ResourceMark rm;
2714 stringStream buffer(128);
2715 print_signature(mt, &buffer);
2716 const char* sigstr = buffer.base();
2717 int siglen = (int) buffer.size();
2718 Symbol *name;
2719 if (!intern_if_not_found) {
2720 name = SymbolTable::probe(sigstr, siglen);
2721 } else {
2722 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2723 }
2724 return name;
2725 }
2727 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2728 if (mt1 == mt2)
2729 return true;
2730 if (rtype(mt1) != rtype(mt2))
2731 return false;
2732 if (ptype_count(mt1) != ptype_count(mt2))
2733 return false;
2734 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2735 if (ptype(mt1, i) != ptype(mt2, i))
2736 return false;
2737 }
2738 return true;
2739 }
2741 oop java_lang_invoke_MethodType::rtype(oop mt) {
2742 assert(is_instance(mt), "must be a MethodType");
2743 return mt->obj_field(_rtype_offset);
2744 }
2746 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2747 assert(is_instance(mt), "must be a MethodType");
2748 return (objArrayOop) mt->obj_field(_ptypes_offset);
2749 }
2751 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2752 return ptypes(mt)->obj_at(idx);
2753 }
2755 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2756 return ptypes(mt)->length();
2757 }
2759 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2760 objArrayOop pts = ptypes(mt);
2761 int count = pts->length();
2762 int slots = 0;
2763 for (int i = 0; i < count; i++) {
2764 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2765 slots += type2size[bt];
2766 }
2767 return slots;
2768 }
2770 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2771 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2772 return type2size[bt];
2773 }
2776 // Support for java_lang_invoke_CallSite
2778 int java_lang_invoke_CallSite::_target_offset;
2780 void java_lang_invoke_CallSite::compute_offsets() {
2781 if (!EnableInvokeDynamic) return;
2782 Klass* k = SystemDictionary::CallSite_klass();
2783 if (k != NULL) {
2784 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2785 }
2786 }
2789 // Support for java_security_AccessControlContext
2791 int java_security_AccessControlContext::_context_offset = 0;
2792 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2793 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2795 void java_security_AccessControlContext::compute_offsets() {
2796 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2797 fieldDescriptor fd;
2798 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2800 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2801 fatal("Invalid layout of java.security.AccessControlContext");
2802 }
2803 _context_offset = fd.offset();
2805 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2806 fatal("Invalid layout of java.security.AccessControlContext");
2807 }
2808 _privilegedContext_offset = fd.offset();
2810 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2811 fatal("Invalid layout of java.security.AccessControlContext");
2812 }
2813 _isPrivileged_offset = fd.offset();
2814 }
2817 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2818 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2819 // Ensure klass is initialized
2820 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2821 // Allocate result
2822 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2823 // Fill in values
2824 result->obj_field_put(_context_offset, context());
2825 result->obj_field_put(_privilegedContext_offset, privileged_context());
2826 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2827 return result;
2828 }
2831 // Support for java_lang_ClassLoader
2833 bool java_lang_ClassLoader::offsets_computed = false;
2834 int java_lang_ClassLoader::_loader_data_offset = -1;
2835 int java_lang_ClassLoader::parallelCapable_offset = -1;
2837 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2838 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2839 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2840 }
2842 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2843 return *java_lang_ClassLoader::loader_data_addr(loader);
2844 }
2846 void java_lang_ClassLoader::compute_offsets() {
2847 assert(!offsets_computed, "offsets should be initialized only once");
2848 offsets_computed = true;
2850 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2851 Klass* k1 = SystemDictionary::ClassLoader_klass();
2852 compute_optional_offset(parallelCapable_offset,
2853 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2855 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2856 }
2858 oop java_lang_ClassLoader::parent(oop loader) {
2859 assert(is_instance(loader), "loader must be oop");
2860 return loader->obj_field(parent_offset);
2861 }
2863 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2864 assert(is_instance(loader), "loader must be oop");
2865 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2866 oop acl = loader;
2867 debug_only(jint loop_count = 0);
2868 // This loop taken verbatim from ClassLoader.java:
2869 do {
2870 acl = parent(acl);
2871 if (cl == acl) {
2872 return true;
2873 }
2874 assert(++loop_count > 0, "loop_count overflow");
2875 } while (acl != NULL);
2876 return false;
2877 }
2880 // For class loader classes, parallelCapable defined
2881 // based on non-null field
2882 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2883 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2884 if (!JDK_Version::is_gte_jdk17x_version()
2885 || parallelCapable_offset == -1) {
2886 // Default for backward compatibility is false
2887 return false;
2888 }
2889 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2890 }
2892 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2893 // Fix for 4474172; see evaluation for more details
2894 loader = non_reflection_class_loader(loader);
2896 oop cl = SystemDictionary::java_system_loader();
2897 while(cl != NULL) {
2898 if (cl == loader) return true;
2899 cl = parent(cl);
2900 }
2901 return false;
2902 }
2904 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2905 if (loader != NULL) {
2906 // See whether this is one of the class loaders associated with
2907 // the generated bytecodes for reflection, and if so, "magically"
2908 // delegate to its parent to prevent class loading from occurring
2909 // in places where applications using reflection didn't expect it.
2910 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2911 // This might be null in non-1.4 JDKs
2912 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2913 return parent(loader);
2914 }
2915 }
2916 return loader;
2917 }
2920 // Support for java_lang_System
2921 int java_lang_System::in_offset_in_bytes() {
2922 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2923 }
2926 int java_lang_System::out_offset_in_bytes() {
2927 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2928 }
2931 int java_lang_System::err_offset_in_bytes() {
2932 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2933 }
2937 int java_lang_Class::_klass_offset;
2938 int java_lang_Class::_array_klass_offset;
2939 int java_lang_Class::_oop_size_offset;
2940 int java_lang_Class::_static_oop_field_count_offset;
2941 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2942 int java_lang_Throwable::backtrace_offset;
2943 int java_lang_Throwable::detailMessage_offset;
2944 int java_lang_Throwable::cause_offset;
2945 int java_lang_Throwable::stackTrace_offset;
2946 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2947 int java_lang_reflect_AccessibleObject::override_offset;
2948 int java_lang_reflect_Method::clazz_offset;
2949 int java_lang_reflect_Method::name_offset;
2950 int java_lang_reflect_Method::returnType_offset;
2951 int java_lang_reflect_Method::parameterTypes_offset;
2952 int java_lang_reflect_Method::exceptionTypes_offset;
2953 int java_lang_reflect_Method::slot_offset;
2954 int java_lang_reflect_Method::modifiers_offset;
2955 int java_lang_reflect_Method::signature_offset;
2956 int java_lang_reflect_Method::annotations_offset;
2957 int java_lang_reflect_Method::parameter_annotations_offset;
2958 int java_lang_reflect_Method::annotation_default_offset;
2959 int java_lang_reflect_Method::type_annotations_offset;
2960 int java_lang_reflect_Constructor::clazz_offset;
2961 int java_lang_reflect_Constructor::parameterTypes_offset;
2962 int java_lang_reflect_Constructor::exceptionTypes_offset;
2963 int java_lang_reflect_Constructor::slot_offset;
2964 int java_lang_reflect_Constructor::modifiers_offset;
2965 int java_lang_reflect_Constructor::signature_offset;
2966 int java_lang_reflect_Constructor::annotations_offset;
2967 int java_lang_reflect_Constructor::parameter_annotations_offset;
2968 int java_lang_reflect_Constructor::type_annotations_offset;
2969 int java_lang_reflect_Field::clazz_offset;
2970 int java_lang_reflect_Field::name_offset;
2971 int java_lang_reflect_Field::type_offset;
2972 int java_lang_reflect_Field::slot_offset;
2973 int java_lang_reflect_Field::modifiers_offset;
2974 int java_lang_reflect_Field::signature_offset;
2975 int java_lang_reflect_Field::annotations_offset;
2976 int java_lang_reflect_Field::type_annotations_offset;
2977 int java_lang_reflect_Parameter::name_offset;
2978 int java_lang_reflect_Parameter::modifiers_offset;
2979 int java_lang_reflect_Parameter::index_offset;
2980 int java_lang_reflect_Parameter::executable_offset;
2981 int java_lang_boxing_object::value_offset;
2982 int java_lang_boxing_object::long_value_offset;
2983 int java_lang_ref_Reference::referent_offset;
2984 int java_lang_ref_Reference::queue_offset;
2985 int java_lang_ref_Reference::next_offset;
2986 int java_lang_ref_Reference::discovered_offset;
2987 int java_lang_ref_Reference::static_lock_offset;
2988 int java_lang_ref_Reference::static_pending_offset;
2989 int java_lang_ref_Reference::number_of_fake_oop_fields;
2990 int java_lang_ref_SoftReference::timestamp_offset;
2991 int java_lang_ref_SoftReference::static_clock_offset;
2992 int java_lang_ClassLoader::parent_offset;
2993 int java_lang_System::static_in_offset;
2994 int java_lang_System::static_out_offset;
2995 int java_lang_System::static_err_offset;
2996 int java_lang_StackTraceElement::declaringClass_offset;
2997 int java_lang_StackTraceElement::methodName_offset;
2998 int java_lang_StackTraceElement::fileName_offset;
2999 int java_lang_StackTraceElement::lineNumber_offset;
3000 int java_lang_AssertionStatusDirectives::classes_offset;
3001 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3002 int java_lang_AssertionStatusDirectives::packages_offset;
3003 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3004 int java_lang_AssertionStatusDirectives::deflt_offset;
3005 int java_nio_Buffer::_limit_offset;
3006 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3007 int sun_reflect_ConstantPool::_oop_offset;
3008 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3011 // Support for java_lang_StackTraceElement
3013 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3014 element->obj_field_put(fileName_offset, value);
3015 }
3017 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3018 element->obj_field_put(declaringClass_offset, value);
3019 }
3021 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3022 element->obj_field_put(methodName_offset, value);
3023 }
3025 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3026 element->int_field_put(lineNumber_offset, value);
3027 }
3030 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3032 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3033 o->obj_field_put(classes_offset, val);
3034 }
3036 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3037 o->obj_field_put(classEnabled_offset, val);
3038 }
3040 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3041 o->obj_field_put(packages_offset, val);
3042 }
3044 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3045 o->obj_field_put(packageEnabled_offset, val);
3046 }
3048 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3049 o->bool_field_put(deflt_offset, val);
3050 }
3053 // Support for intrinsification of java.nio.Buffer.checkIndex
3054 int java_nio_Buffer::limit_offset() {
3055 return _limit_offset;
3056 }
3059 void java_nio_Buffer::compute_offsets() {
3060 Klass* k = SystemDictionary::nio_Buffer_klass();
3061 assert(k != NULL, "must be loaded in 1.4+");
3062 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3063 }
3065 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3066 if (_owner_offset != 0) return;
3068 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3069 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3070 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3071 compute_offset(_owner_offset, k,
3072 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3073 }
3075 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3076 assert(_owner_offset != 0, "Must be initialized");
3077 return obj->obj_field(_owner_offset);
3078 }
3080 // Compute hard-coded offsets
3081 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3082 // are not available to determine the offset_of_static_fields.
3083 void JavaClasses::compute_hard_coded_offsets() {
3084 const int x = heapOopSize;
3085 const int header = instanceOopDesc::base_offset_in_bytes();
3087 // Throwable Class
3088 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3089 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3090 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3091 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3092 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3094 // java_lang_boxing_object
3095 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3096 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3098 // java_lang_ref_Reference:
3099 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3100 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3101 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3102 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3103 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3104 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3105 // Artificial fields for java_lang_ref_Reference
3106 // The first field is for the discovered field added in 1.4
3107 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3109 // java_lang_ref_SoftReference Class
3110 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3111 // Don't multiply static fields because they are always in wordSize units
3112 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3114 // java_lang_ClassLoader
3115 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3117 // java_lang_System
3118 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3119 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3120 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3122 // java_lang_StackTraceElement
3123 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3124 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3125 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3126 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3127 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3128 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3129 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3130 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3131 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3133 }
3136 // Compute non-hard-coded field offsets of all the classes in this file
3137 void JavaClasses::compute_offsets() {
3138 // java_lang_Class::compute_offsets was called earlier in bootstrap
3139 java_lang_ClassLoader::compute_offsets();
3140 java_lang_Thread::compute_offsets();
3141 java_lang_ThreadGroup::compute_offsets();
3142 if (EnableInvokeDynamic) {
3143 java_lang_invoke_MethodHandle::compute_offsets();
3144 java_lang_invoke_MemberName::compute_offsets();
3145 java_lang_invoke_LambdaForm::compute_offsets();
3146 java_lang_invoke_MethodType::compute_offsets();
3147 java_lang_invoke_CallSite::compute_offsets();
3148 }
3149 java_security_AccessControlContext::compute_offsets();
3150 // Initialize reflection classes. The layouts of these classes
3151 // changed with the new reflection implementation in JDK 1.4, and
3152 // since the Universe doesn't know what JDK version it is until this
3153 // point we defer computation of these offsets until now.
3154 java_lang_reflect_AccessibleObject::compute_offsets();
3155 java_lang_reflect_Method::compute_offsets();
3156 java_lang_reflect_Constructor::compute_offsets();
3157 java_lang_reflect_Field::compute_offsets();
3158 if (JDK_Version::is_gte_jdk14x_version()) {
3159 java_nio_Buffer::compute_offsets();
3160 }
3161 if (JDK_Version::is_gte_jdk15x_version()) {
3162 sun_reflect_ConstantPool::compute_offsets();
3163 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3164 }
3165 if (JDK_Version::is_jdk18x_version())
3166 java_lang_reflect_Parameter::compute_offsets();
3168 // generated interpreter code wants to know about the offsets we just computed:
3169 AbstractAssembler::update_delayed_values();
3170 }
3172 #ifndef PRODUCT
3174 // These functions exist to assert the validity of hard-coded field offsets to guard
3175 // against changes in the class files
3177 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3178 EXCEPTION_MARK;
3179 fieldDescriptor fd;
3180 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3181 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3182 instanceKlassHandle h_klass (THREAD, k);
3183 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3184 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3185 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3186 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3187 return false;
3188 }
3189 if (fd.is_static()) {
3190 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3191 return false;
3192 }
3193 if (fd.offset() == hardcoded_offset ) {
3194 return true;
3195 } else {
3196 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3197 klass_name, field_name, hardcoded_offset, fd.offset());
3198 return false;
3199 }
3200 }
3203 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3204 EXCEPTION_MARK;
3205 fieldDescriptor fd;
3206 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3207 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3208 instanceKlassHandle h_klass (THREAD, k);
3209 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3210 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3211 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3212 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3213 return false;
3214 }
3215 if (!fd.is_static()) {
3216 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3217 return false;
3218 }
3219 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3220 return true;
3221 } else {
3222 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());
3223 return false;
3224 }
3225 }
3228 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3229 EXCEPTION_MARK;
3230 fieldDescriptor fd;
3231 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3232 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3233 instanceKlassHandle h_klass (THREAD, k);
3234 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3235 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3236 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3237 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3238 return false;
3239 }
3240 if (!fd.is_static() || !fd.has_initial_value()) {
3241 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3242 return false;
3243 }
3244 if (!fd.initial_value_tag().is_int()) {
3245 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3246 return false;
3247 }
3248 jint field_value = fd.int_initial_value();
3249 if (field_value == hardcoded_constant) {
3250 return true;
3251 } else {
3252 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);
3253 return false;
3254 }
3255 }
3258 // Check the hard-coded field offsets of all the classes in this file
3260 void JavaClasses::check_offsets() {
3261 bool valid = true;
3262 HandleMark hm;
3264 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3265 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3267 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3268 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3270 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3271 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3273 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3274 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3276 // java.lang.String
3278 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3279 if (java_lang_String::has_offset_field()) {
3280 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3281 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3282 }
3283 if (java_lang_String::has_hash_field()) {
3284 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3285 }
3287 // java.lang.Class
3289 // Fake fields
3290 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3291 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3293 // java.lang.Throwable
3295 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3296 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3297 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3298 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3300 // Boxed primitive objects (java_lang_boxing_object)
3302 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3303 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3304 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3305 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3306 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3307 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3308 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3309 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3311 // java.lang.ClassLoader
3313 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3315 // java.lang.System
3317 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3318 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3319 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3321 // java.lang.StackTraceElement
3323 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3324 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3325 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3326 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3328 // java.lang.ref.Reference
3330 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3331 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3332 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3333 // Fake field
3334 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3335 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3336 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3338 // java.lang.ref.SoftReference
3340 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3341 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3343 // java.lang.AssertionStatusDirectives
3344 //
3345 // The CheckAssertionStatusDirectives boolean can be removed from here and
3346 // globals.hpp after the AssertionStatusDirectives class has been integrated
3347 // into merlin "for some time." Without it, the vm will fail with early
3348 // merlin builds.
3350 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3351 const char* nm = "java/lang/AssertionStatusDirectives";
3352 const char* sig = "[Ljava/lang/String;";
3353 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3354 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3355 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3356 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3357 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3358 }
3360 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3361 }
3363 #endif // PRODUCT
3365 int InjectedField::compute_offset() {
3366 Klass* klass_oop = klass();
3367 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3368 if (!may_be_java && !fs.access_flags().is_internal()) {
3369 // Only look at injected fields
3370 continue;
3371 }
3372 if (fs.name() == name() && fs.signature() == signature()) {
3373 return fs.offset();
3374 }
3375 }
3376 ResourceMark rm;
3377 tty->print_cr("Invalid layout of %s at %s/%s%s", InstanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
3378 #ifndef PRODUCT
3379 klass_oop->print();
3380 tty->print_cr("all fields:");
3381 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3382 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3383 }
3384 #endif //PRODUCT
3385 fatal("Invalid layout of preloaded class");
3386 return -1;
3387 }
3389 void javaClasses_init() {
3390 JavaClasses::compute_offsets();
3391 JavaClasses::check_offsets();
3392 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3393 }