Tue, 09 Oct 2012 07:41:27 +0200
Merge
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "classfile/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/vframe.hpp"
51 #include "utilities/preserveException.hpp"
52 #ifdef TARGET_OS_FAMILY_linux
53 # include "thread_linux.inline.hpp"
54 #endif
55 #ifdef TARGET_OS_FAMILY_solaris
56 # include "thread_solaris.inline.hpp"
57 #endif
58 #ifdef TARGET_OS_FAMILY_windows
59 # include "thread_windows.inline.hpp"
60 #endif
61 #ifdef TARGET_OS_FAMILY_bsd
62 # include "thread_bsd.inline.hpp"
63 #endif
65 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
66 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
68 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
69 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
71 InjectedField JavaClasses::_injected_fields[] = {
72 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
73 };
75 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
76 return _injected_fields[id].compute_offset();
77 }
80 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
81 *field_count = 0;
83 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
84 if (sid == vmSymbols::NO_SID) {
85 // Only well known classes can inject fields
86 return NULL;
87 }
89 int count = 0;
90 int start = -1;
92 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
93 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
94 count++; \
95 if (start == -1) start = klass##_##name##_enum; \
96 }
97 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
98 #undef LOOKUP_INJECTED_FIELD
100 if (start != -1) {
101 *field_count = count;
102 return _injected_fields + start;
103 }
104 return NULL;
105 }
108 static bool find_field(InstanceKlass* ik,
109 Symbol* name_symbol, Symbol* signature_symbol,
110 fieldDescriptor* fd,
111 bool allow_super = false) {
112 if (allow_super)
113 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
114 else
115 return ik->find_local_field(name_symbol, signature_symbol, fd);
116 }
118 // Helpful routine for computing field offsets at run time rather than hardcoding them
119 static void
120 compute_offset(int &dest_offset,
121 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
122 bool allow_super = false) {
123 fieldDescriptor fd;
124 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
125 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
126 ResourceMark rm;
127 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
128 #ifndef PRODUCT
129 klass_oop->print();
130 tty->print_cr("all fields:");
131 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
132 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
133 }
134 #endif //PRODUCT
135 fatal("Invalid layout of preloaded class");
136 }
137 dest_offset = fd.offset();
138 }
140 // Same as above but for "optional" offsets that might not be present in certain JDK versions
141 static void
142 compute_optional_offset(int& dest_offset,
143 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
144 bool allow_super = false) {
145 fieldDescriptor fd;
146 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
147 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
148 dest_offset = fd.offset();
149 }
150 }
153 int java_lang_String::value_offset = 0;
154 int java_lang_String::offset_offset = 0;
155 int java_lang_String::count_offset = 0;
156 int java_lang_String::hash_offset = 0;
158 bool java_lang_String::initialized = false;
160 void java_lang_String::compute_offsets() {
161 assert(!initialized, "offsets should be initialized only once");
163 Klass* k = SystemDictionary::String_klass();
164 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
165 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
166 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
167 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
169 initialized = true;
170 }
172 Handle java_lang_String::basic_create(int length, TRAPS) {
173 assert(initialized, "Must be initialized");
174 // Create the String object first, so there's a chance that the String
175 // and the char array it points to end up in the same cache line.
176 oop obj;
177 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
179 // Create the char array. The String object must be handlized here
180 // because GC can happen as a result of the allocation attempt.
181 Handle h_obj(THREAD, obj);
182 typeArrayOop buffer;
183 buffer = oopFactory::new_charArray(length, CHECK_NH);
185 // Point the String at the char array
186 obj = h_obj();
187 set_value(obj, buffer);
188 // No need to zero the offset, allocation zero'ed the entire String object
189 assert(offset(obj) == 0, "initial String offset should be zero");
190 //set_offset(obj, 0);
191 set_count(obj, length);
193 return h_obj;
194 }
196 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
197 Handle h_obj = basic_create(length, CHECK_NH);
198 typeArrayOop buffer = value(h_obj());
199 for (int index = 0; index < length; index++) {
200 buffer->char_at_put(index, unicode[index]);
201 }
202 return h_obj;
203 }
205 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
206 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
207 return h_obj();
208 }
210 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
211 if (utf8_str == NULL) {
212 return Handle();
213 }
214 int length = UTF8::unicode_length(utf8_str);
215 Handle h_obj = basic_create(length, CHECK_NH);
216 if (length > 0) {
217 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
218 }
219 return h_obj;
220 }
222 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
223 Handle h_obj = create_from_str(utf8_str, CHECK_0);
224 return h_obj();
225 }
227 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
228 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
229 Handle h_obj = basic_create(length, CHECK_NH);
230 if (length > 0) {
231 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
232 }
233 return h_obj;
234 }
236 // Converts a C string to a Java String based on current encoding
237 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
238 assert(str != NULL, "bad arguments");
240 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
241 static to_java_string_fn_t _to_java_string_fn = NULL;
243 if (_to_java_string_fn == NULL) {
244 void *lib_handle = os::native_java_library();
245 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
246 if (_to_java_string_fn == NULL) {
247 fatal("NewStringPlatform missing");
248 }
249 }
251 jstring js = NULL;
252 { JavaThread* thread = (JavaThread*)THREAD;
253 assert(thread->is_Java_thread(), "must be java thread");
254 HandleMark hm(thread);
255 ThreadToNativeFromVM ttn(thread);
256 js = (_to_java_string_fn)(thread->jni_environment(), str);
257 }
258 return Handle(THREAD, JNIHandles::resolve(js));
259 }
261 // Converts a Java String to a native C string that can be used for
262 // native OS calls.
263 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
265 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
266 static to_platform_string_fn_t _to_platform_string_fn = NULL;
268 if (_to_platform_string_fn == NULL) {
269 void *lib_handle = os::native_java_library();
270 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
271 if (_to_platform_string_fn == NULL) {
272 fatal("GetStringPlatformChars missing");
273 }
274 }
276 char *native_platform_string;
277 { JavaThread* thread = (JavaThread*)THREAD;
278 assert(thread->is_Java_thread(), "must be java thread");
279 JNIEnv *env = thread->jni_environment();
280 jstring js = (jstring) JNIHandles::make_local(env, java_string());
281 bool is_copy;
282 HandleMark hm(thread);
283 ThreadToNativeFromVM ttn(thread);
284 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
285 assert(is_copy == JNI_TRUE, "is_copy value changed");
286 JNIHandles::destroy_local(js);
287 }
288 return native_platform_string;
289 }
291 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
292 oop obj = java_string();
293 // Typical usage is to convert all '/' to '.' in string.
294 typeArrayOop value = java_lang_String::value(obj);
295 int offset = java_lang_String::offset(obj);
296 int length = java_lang_String::length(obj);
298 // First check if any from_char exist
299 int index; // Declared outside, used later
300 for (index = 0; index < length; index++) {
301 if (value->char_at(index + offset) == from_char) {
302 break;
303 }
304 }
305 if (index == length) {
306 // No from_char, so do not copy.
307 return java_string;
308 }
310 // Create new UNICODE buffer. Must handlize value because GC
311 // may happen during String and char array creation.
312 typeArrayHandle h_value(THREAD, value);
313 Handle string = basic_create(length, CHECK_NH);
315 typeArrayOop from_buffer = h_value();
316 typeArrayOop to_buffer = java_lang_String::value(string());
318 // Copy contents
319 for (index = 0; index < length; index++) {
320 jchar c = from_buffer->char_at(index + offset);
321 if (c == from_char) {
322 c = to_char;
323 }
324 to_buffer->char_at_put(index, c);
325 }
326 return string;
327 }
329 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
330 typeArrayOop value = java_lang_String::value(java_string);
331 int offset = java_lang_String::offset(java_string);
332 length = java_lang_String::length(java_string);
334 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
335 for (int index = 0; index < length; index++) {
336 result[index] = value->char_at(index + offset);
337 }
338 return result;
339 }
341 unsigned int java_lang_String::to_hash(oop java_string) {
342 int length = java_lang_String::length(java_string);
343 // Zero length string will hash to zero with String.toHash() function.
344 if (length == 0) return 0;
346 typeArrayOop value = java_lang_String::value(java_string);
347 int offset = java_lang_String::offset(java_string);
348 return java_lang_String::to_hash(value->char_at_addr(offset), length);
349 }
351 unsigned int java_lang_String::hash_string(oop java_string) {
352 int length = java_lang_String::length(java_string);
353 // Zero length string doesn't hash necessarily hash to zero.
354 if (length == 0) {
355 return StringTable::hash_string(NULL, 0);
356 }
358 typeArrayOop value = java_lang_String::value(java_string);
359 int offset = java_lang_String::offset(java_string);
360 return StringTable::hash_string(value->char_at_addr(offset), length);
361 }
363 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
364 oop obj = java_string();
365 typeArrayOop value = java_lang_String::value(obj);
366 int offset = java_lang_String::offset(obj);
367 int length = java_lang_String::length(obj);
368 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
369 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
370 return sym;
371 }
373 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
374 typeArrayOop value = java_lang_String::value(java_string);
375 int offset = java_lang_String::offset(java_string);
376 int length = java_lang_String::length(java_string);
377 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
378 return SymbolTable::probe_unicode(base, length);
379 }
382 int java_lang_String::utf8_length(oop java_string) {
383 typeArrayOop value = java_lang_String::value(java_string);
384 int offset = java_lang_String::offset(java_string);
385 int length = java_lang_String::length(java_string);
386 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
387 return UNICODE::utf8_length(position, length);
388 }
390 char* java_lang_String::as_utf8_string(oop java_string) {
391 typeArrayOop value = java_lang_String::value(java_string);
392 int offset = java_lang_String::offset(java_string);
393 int length = java_lang_String::length(java_string);
394 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
395 return UNICODE::as_utf8(position, length);
396 }
398 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
399 typeArrayOop value = java_lang_String::value(java_string);
400 int offset = java_lang_String::offset(java_string);
401 int length = java_lang_String::length(java_string);
402 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
403 return UNICODE::as_utf8(position, length, buf, buflen);
404 }
406 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
407 typeArrayOop value = java_lang_String::value(java_string);
408 int offset = java_lang_String::offset(java_string);
409 int length = java_lang_String::length(java_string);
410 assert(start + len <= length, "just checking");
411 jchar* position = value->char_at_addr(offset + start);
412 return UNICODE::as_utf8(position, len);
413 }
415 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
416 assert(SharedSkipVerify ||
417 java_string->klass() == SystemDictionary::String_klass(),
418 "must be java_string");
419 typeArrayOop value = java_lang_String::value(java_string);
420 int offset = java_lang_String::offset(java_string);
421 int length = java_lang_String::length(java_string);
422 if (length != len) {
423 return false;
424 }
425 for (int i = 0; i < len; i++) {
426 if (value->char_at(i + offset) != chars[i]) {
427 return false;
428 }
429 }
430 return true;
431 }
433 void java_lang_String::print(Handle java_string, outputStream* st) {
434 oop obj = java_string();
435 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
436 typeArrayOop value = java_lang_String::value(obj);
437 int offset = java_lang_String::offset(obj);
438 int length = java_lang_String::length(obj);
440 int end = MIN2(length, 100);
441 if (value == NULL) {
442 // This can happen if, e.g., printing a String
443 // object before its initializer has been called
444 st->print_cr("NULL");
445 } else {
446 st->print("\"");
447 for (int index = 0; index < length; index++) {
448 st->print("%c", value->char_at(index + offset));
449 }
450 st->print("\"");
451 }
452 }
454 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
455 Handle mirror (THREAD, fd->field_holder()->java_mirror());
456 assert(mirror.not_null() && fd->is_static(), "just checking");
457 if (fd->has_initial_value()) {
458 BasicType t = fd->field_type();
459 switch (t) {
460 case T_BYTE:
461 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
462 break;
463 case T_BOOLEAN:
464 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
465 break;
466 case T_CHAR:
467 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
468 break;
469 case T_SHORT:
470 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
471 break;
472 case T_INT:
473 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
474 break;
475 case T_FLOAT:
476 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
477 break;
478 case T_DOUBLE:
479 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
480 break;
481 case T_LONG:
482 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
483 break;
484 case T_OBJECT:
485 {
486 #ifdef ASSERT
487 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
488 assert(fd->signature() == sym, "just checking");
489 #endif
490 oop string = fd->string_initial_value(CHECK);
491 mirror()->obj_field_put(fd->offset(), string);
492 }
493 break;
494 default:
495 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
496 "Illegal ConstantValue attribute in class file");
497 }
498 }
499 }
502 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
503 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
505 // If the offset was read from the shared archive, it was fixed up already
506 if (!k->is_shared()) {
507 if (k->oop_is_instance()) {
508 // During bootstrap, java.lang.Class wasn't loaded so static field
509 // offsets were computed without the size added it. Go back and
510 // update all the static field offsets to included the size.
511 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
512 if (fs.access_flags().is_static()) {
513 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
514 fs.set_offset(real_offset);
515 }
516 }
517 }
518 }
519 create_mirror(k, CHECK);
520 }
522 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
523 assert(k->java_mirror() == NULL, "should only assign mirror once");
524 // Use this moment of initialization to cache modifier_flags also,
525 // to support Class.getModifiers(). Instance classes recalculate
526 // the cached flags after the class file is parsed, but before the
527 // class is put into the system dictionary.
528 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
529 k->set_modifier_flags(computed_modifiers);
530 // Class_klass has to be loaded because it is used to allocate
531 // the mirror.
532 if (SystemDictionary::Class_klass_loaded()) {
533 // Allocate mirror (java.lang.Class instance)
534 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
536 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
537 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
539 // It might also have a component mirror. This mirror must already exist.
540 if (k->oop_is_array()) {
541 Handle comp_mirror;
542 if (k->oop_is_typeArray()) {
543 BasicType type = TypeArrayKlass::cast(k())->element_type();
544 comp_mirror = Universe::java_mirror(type);
545 } else {
546 assert(k->oop_is_objArray(), "Must be");
547 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
548 assert(element_klass != NULL, "Must have an element klass");
549 comp_mirror = Klass::cast(element_klass)->java_mirror();
550 }
551 assert(comp_mirror.not_null(), "must have a mirror");
553 // Two-way link between the array klass and its component mirror:
554 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
555 set_array_klass(comp_mirror(), k());
556 } else {
557 assert(k->oop_is_instance(), "Must be");
558 // Initialize static fields
559 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
560 }
561 return mirror();
562 } else {
563 if (fixup_mirror_list() == NULL) {
564 GrowableArray<Klass*>* list =
565 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
566 set_fixup_mirror_list(list);
567 }
568 fixup_mirror_list()->push(k());
569 return NULL;
570 }
571 }
575 int java_lang_Class::oop_size(oop java_class) {
576 assert(_oop_size_offset != 0, "must be set");
577 return java_class->int_field(_oop_size_offset);
578 }
579 void java_lang_Class::set_oop_size(oop java_class, int size) {
580 assert(_oop_size_offset != 0, "must be set");
581 java_class->int_field_put(_oop_size_offset, size);
582 }
583 int java_lang_Class::static_oop_field_count(oop java_class) {
584 assert(_static_oop_field_count_offset != 0, "must be set");
585 return java_class->int_field(_static_oop_field_count_offset);
586 }
587 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
588 assert(_static_oop_field_count_offset != 0, "must be set");
589 java_class->int_field_put(_static_oop_field_count_offset, size);
590 }
592 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
593 // This should be improved by adding a field at the Java level or by
594 // introducing a new VM klass (see comment in ClassFileParser)
595 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
596 if (type != T_VOID) {
597 Klass* aklass = Universe::typeArrayKlassObj(type);
598 assert(aklass != NULL, "correct bootstrap");
599 set_array_klass(java_class, aklass);
600 }
601 #ifdef ASSERT
602 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
603 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
604 #endif
605 return java_class;
606 }
609 Klass* java_lang_Class::as_Klass(oop java_class) {
610 //%note memory_2
611 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
612 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
613 assert(k == NULL || k->is_klass(), "type check");
614 return k;
615 }
618 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
619 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
620 java_class->metadata_field_put(_klass_offset, klass);
621 }
624 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
625 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
626 Symbol* name = NULL;
627 bool is_instance = false;
628 if (is_primitive(java_class)) {
629 name = vmSymbols::type_signature(primitive_type(java_class));
630 } else {
631 Klass* k = as_Klass(java_class);
632 is_instance = Klass::cast(k)->oop_is_instance();
633 name = Klass::cast(k)->name();
634 }
635 if (name == NULL) {
636 st->print("<null>");
637 return;
638 }
639 if (is_instance) st->print("L");
640 st->write((char*) name->base(), (int) name->utf8_length());
641 if (is_instance) st->print(";");
642 }
644 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
645 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
646 Symbol* name;
647 if (is_primitive(java_class)) {
648 name = vmSymbols::type_signature(primitive_type(java_class));
649 // Because this can create a new symbol, the caller has to decrement
650 // the refcount, so make adjustment here and below for symbols returned
651 // that are not created or incremented due to a successful lookup.
652 name->increment_refcount();
653 } else {
654 Klass* k = as_Klass(java_class);
655 if (!Klass::cast(k)->oop_is_instance()) {
656 name = Klass::cast(k)->name();
657 name->increment_refcount();
658 } else {
659 ResourceMark rm;
660 const char* sigstr = Klass::cast(k)->signature_name();
661 int siglen = (int) strlen(sigstr);
662 if (!intern_if_not_found) {
663 name = SymbolTable::probe(sigstr, siglen);
664 } else {
665 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
666 }
667 }
668 }
669 return name;
670 }
673 Klass* java_lang_Class::array_klass(oop java_class) {
674 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
675 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_array(), "should be array klass");
676 return k;
677 }
680 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
681 assert(klass->is_klass() && Klass::cast(klass)->oop_is_array(), "should be array klass");
682 java_class->metadata_field_put(_array_klass_offset, klass);
683 }
686 Method* java_lang_Class::resolved_constructor(oop java_class) {
687 Metadata* constructor = java_class->metadata_field(_resolved_constructor_offset);
688 assert(constructor == NULL || constructor->is_method(), "should be method");
689 return ((Method*)constructor);
690 }
693 void java_lang_Class::set_resolved_constructor(oop java_class, Method* constructor) {
694 assert(constructor->is_method(), "should be method");
695 java_class->metadata_field_put(_resolved_constructor_offset, constructor);
696 }
699 bool java_lang_Class::is_primitive(oop java_class) {
700 // should assert:
701 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
702 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
704 #ifdef ASSERT
705 if (is_primitive) {
706 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
707 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
708 "Should be either the T_VOID primitive or a java primitive");
709 }
710 #endif
712 return is_primitive;
713 }
716 BasicType java_lang_Class::primitive_type(oop java_class) {
717 assert(java_lang_Class::is_primitive(java_class), "just checking");
718 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
719 BasicType type = T_VOID;
720 if (ak != NULL) {
721 // Note: create_basic_type_mirror above initializes ak to a non-null value.
722 type = ArrayKlass::cast(ak)->element_type();
723 } else {
724 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
725 }
726 assert(Universe::java_mirror(type) == java_class, "must be consistent");
727 return type;
728 }
730 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
731 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
732 if (is_primitive(java_class)) {
733 if (reference_klass != NULL)
734 (*reference_klass) = NULL;
735 return primitive_type(java_class);
736 } else {
737 if (reference_klass != NULL)
738 (*reference_klass) = as_Klass(java_class);
739 return T_OBJECT;
740 }
741 }
744 oop java_lang_Class::primitive_mirror(BasicType t) {
745 oop mirror = Universe::java_mirror(t);
746 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
747 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
748 return mirror;
749 }
751 bool java_lang_Class::offsets_computed = false;
752 int java_lang_Class::classRedefinedCount_offset = -1;
754 void java_lang_Class::compute_offsets() {
755 assert(!offsets_computed, "offsets should be initialized only once");
756 offsets_computed = true;
758 Klass* klass_oop = SystemDictionary::Class_klass();
759 // The classRedefinedCount field is only present starting in 1.5,
760 // so don't go fatal.
761 compute_optional_offset(classRedefinedCount_offset,
762 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
764 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
765 }
767 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
768 if (!JDK_Version::is_gte_jdk15x_version()
769 || classRedefinedCount_offset == -1) {
770 // The classRedefinedCount field is only present starting in 1.5.
771 // If we don't have an offset for it then just return -1 as a marker.
772 return -1;
773 }
775 return the_class_mirror->int_field(classRedefinedCount_offset);
776 }
778 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
779 if (!JDK_Version::is_gte_jdk15x_version()
780 || classRedefinedCount_offset == -1) {
781 // The classRedefinedCount field is only present starting in 1.5.
782 // If we don't have an offset for it then nothing to set.
783 return;
784 }
786 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
787 }
790 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
791 // platform thread structure, and a eetop offset which was used for thread
792 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
793 // merged, so in the HotSpot VM we just use the eetop field for the thread
794 // instead of the privateInfo_offset.
795 //
796 // Note: The stackSize field is only present starting in 1.4.
798 int java_lang_Thread::_name_offset = 0;
799 int java_lang_Thread::_group_offset = 0;
800 int java_lang_Thread::_contextClassLoader_offset = 0;
801 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
802 int java_lang_Thread::_priority_offset = 0;
803 int java_lang_Thread::_eetop_offset = 0;
804 int java_lang_Thread::_daemon_offset = 0;
805 int java_lang_Thread::_stillborn_offset = 0;
806 int java_lang_Thread::_stackSize_offset = 0;
807 int java_lang_Thread::_tid_offset = 0;
808 int java_lang_Thread::_thread_status_offset = 0;
809 int java_lang_Thread::_park_blocker_offset = 0;
810 int java_lang_Thread::_park_event_offset = 0 ;
813 void java_lang_Thread::compute_offsets() {
814 assert(_group_offset == 0, "offsets should be initialized only once");
816 Klass* k = SystemDictionary::Thread_klass();
817 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
818 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
819 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
820 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
821 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
822 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
823 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
824 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
825 // The stackSize field is only present starting in 1.4, so don't go fatal.
826 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
827 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
828 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
829 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
830 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
831 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
832 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
833 vmSymbols::long_signature());
834 }
837 JavaThread* java_lang_Thread::thread(oop java_thread) {
838 return (JavaThread*)java_thread->address_field(_eetop_offset);
839 }
842 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
843 java_thread->address_field_put(_eetop_offset, (address)thread);
844 }
847 typeArrayOop java_lang_Thread::name(oop java_thread) {
848 oop name = java_thread->obj_field(_name_offset);
849 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
850 return typeArrayOop(name);
851 }
854 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
855 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
856 java_thread->obj_field_put(_name_offset, name);
857 }
860 ThreadPriority java_lang_Thread::priority(oop java_thread) {
861 return (ThreadPriority)java_thread->int_field(_priority_offset);
862 }
865 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
866 java_thread->int_field_put(_priority_offset, priority);
867 }
870 oop java_lang_Thread::threadGroup(oop java_thread) {
871 return java_thread->obj_field(_group_offset);
872 }
875 bool java_lang_Thread::is_stillborn(oop java_thread) {
876 return java_thread->bool_field(_stillborn_offset) != 0;
877 }
880 // We never have reason to turn the stillborn bit off
881 void java_lang_Thread::set_stillborn(oop java_thread) {
882 java_thread->bool_field_put(_stillborn_offset, true);
883 }
886 bool java_lang_Thread::is_alive(oop java_thread) {
887 JavaThread* thr = java_lang_Thread::thread(java_thread);
888 return (thr != NULL);
889 }
892 bool java_lang_Thread::is_daemon(oop java_thread) {
893 return java_thread->bool_field(_daemon_offset) != 0;
894 }
897 void java_lang_Thread::set_daemon(oop java_thread) {
898 java_thread->bool_field_put(_daemon_offset, true);
899 }
901 oop java_lang_Thread::context_class_loader(oop java_thread) {
902 return java_thread->obj_field(_contextClassLoader_offset);
903 }
905 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
906 return java_thread->obj_field(_inheritedAccessControlContext_offset);
907 }
910 jlong java_lang_Thread::stackSize(oop java_thread) {
911 // The stackSize field is only present starting in 1.4
912 if (_stackSize_offset > 0) {
913 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
914 return java_thread->long_field(_stackSize_offset);
915 } else {
916 return 0;
917 }
918 }
920 // Write the thread status value to threadStatus field in java.lang.Thread java class.
921 void java_lang_Thread::set_thread_status(oop java_thread,
922 java_lang_Thread::ThreadStatus status) {
923 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
924 // The threadStatus is only present starting in 1.5
925 if (_thread_status_offset > 0) {
926 java_thread->int_field_put(_thread_status_offset, status);
927 }
928 }
930 // Read thread status value from threadStatus field in java.lang.Thread java class.
931 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
932 assert(Thread::current()->is_VM_thread() ||
933 JavaThread::current()->thread_state() == _thread_in_vm,
934 "Java Thread is not running in vm");
935 // The threadStatus is only present starting in 1.5
936 if (_thread_status_offset > 0) {
937 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
938 } else {
939 // All we can easily figure out is if it is alive, but that is
940 // enough info for a valid unknown status.
941 // These aren't restricted to valid set ThreadStatus values, so
942 // use JVMTI values and cast.
943 JavaThread* thr = java_lang_Thread::thread(java_thread);
944 if (thr == NULL) {
945 // the thread hasn't run yet or is in the process of exiting
946 return NEW;
947 }
948 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
949 }
950 }
953 jlong java_lang_Thread::thread_id(oop java_thread) {
954 // The thread ID field is only present starting in 1.5
955 if (_tid_offset > 0) {
956 return java_thread->long_field(_tid_offset);
957 } else {
958 return 0;
959 }
960 }
962 oop java_lang_Thread::park_blocker(oop java_thread) {
963 assert(JDK_Version::current().supports_thread_park_blocker() &&
964 _park_blocker_offset != 0, "Must support parkBlocker field");
966 if (_park_blocker_offset > 0) {
967 return java_thread->obj_field(_park_blocker_offset);
968 }
970 return NULL;
971 }
973 jlong java_lang_Thread::park_event(oop java_thread) {
974 if (_park_event_offset > 0) {
975 return java_thread->long_field(_park_event_offset);
976 }
977 return 0;
978 }
980 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
981 if (_park_event_offset > 0) {
982 java_thread->long_field_put(_park_event_offset, ptr);
983 return true;
984 }
985 return false;
986 }
989 const char* java_lang_Thread::thread_status_name(oop java_thread) {
990 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
991 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
992 switch (status) {
993 case NEW : return "NEW";
994 case RUNNABLE : return "RUNNABLE";
995 case SLEEPING : return "TIMED_WAITING (sleeping)";
996 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
997 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
998 case PARKED : return "WAITING (parking)";
999 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1000 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1001 case TERMINATED : return "TERMINATED";
1002 default : return "UNKNOWN";
1003 };
1004 }
1005 int java_lang_ThreadGroup::_parent_offset = 0;
1006 int java_lang_ThreadGroup::_name_offset = 0;
1007 int java_lang_ThreadGroup::_threads_offset = 0;
1008 int java_lang_ThreadGroup::_groups_offset = 0;
1009 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1010 int java_lang_ThreadGroup::_destroyed_offset = 0;
1011 int java_lang_ThreadGroup::_daemon_offset = 0;
1012 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1013 int java_lang_ThreadGroup::_nthreads_offset = 0;
1014 int java_lang_ThreadGroup::_ngroups_offset = 0;
1016 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1017 assert(java_thread_group->is_oop(), "thread group must be oop");
1018 return java_thread_group->obj_field(_parent_offset);
1019 }
1021 // ("name as oop" accessor is not necessary)
1023 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1024 oop name = java_thread_group->obj_field(_name_offset);
1025 // ThreadGroup.name can be null
1026 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1027 }
1029 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1030 assert(java_thread_group->is_oop(), "thread group must be oop");
1031 return java_thread_group->int_field(_nthreads_offset);
1032 }
1034 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1035 oop threads = java_thread_group->obj_field(_threads_offset);
1036 assert(threads != NULL, "threadgroups should have threads");
1037 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1038 return objArrayOop(threads);
1039 }
1041 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1042 assert(java_thread_group->is_oop(), "thread group must be oop");
1043 return java_thread_group->int_field(_ngroups_offset);
1044 }
1046 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1047 oop groups = java_thread_group->obj_field(_groups_offset);
1048 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1049 return objArrayOop(groups);
1050 }
1052 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1053 assert(java_thread_group->is_oop(), "thread group must be oop");
1054 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1055 }
1057 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1058 assert(java_thread_group->is_oop(), "thread group must be oop");
1059 return java_thread_group->bool_field(_destroyed_offset) != 0;
1060 }
1062 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1063 assert(java_thread_group->is_oop(), "thread group must be oop");
1064 return java_thread_group->bool_field(_daemon_offset) != 0;
1065 }
1067 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1068 assert(java_thread_group->is_oop(), "thread group must be oop");
1069 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1070 }
1072 void java_lang_ThreadGroup::compute_offsets() {
1073 assert(_parent_offset == 0, "offsets should be initialized only once");
1075 Klass* k = SystemDictionary::ThreadGroup_klass();
1077 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1078 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1079 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1080 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1081 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1082 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1083 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1084 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1085 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1086 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1087 }
1089 oop java_lang_Throwable::unassigned_stacktrace() {
1090 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1091 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1092 if (UseCompressedOops) {
1093 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1094 } else {
1095 return oopDesc::load_decode_heap_oop((oop*)addr);
1096 }
1097 }
1099 oop java_lang_Throwable::backtrace(oop throwable) {
1100 return throwable->obj_field_acquire(backtrace_offset);
1101 }
1104 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1105 throwable->release_obj_field_put(backtrace_offset, value);
1106 }
1109 oop java_lang_Throwable::message(oop throwable) {
1110 return throwable->obj_field(detailMessage_offset);
1111 }
1114 oop java_lang_Throwable::message(Handle throwable) {
1115 return throwable->obj_field(detailMessage_offset);
1116 }
1119 void java_lang_Throwable::set_message(oop throwable, oop value) {
1120 throwable->obj_field_put(detailMessage_offset, value);
1121 }
1124 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1125 throwable->obj_field_put(stackTrace_offset, st_element_array);
1126 }
1128 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1129 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1130 set_stacktrace(throwable, NULL);
1131 }
1134 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1135 ResourceMark rm;
1136 Klass* k = throwable->klass();
1137 assert(k != NULL, "just checking");
1138 st->print("%s", InstanceKlass::cast(k)->external_name());
1139 oop msg = message(throwable);
1140 if (msg != NULL) {
1141 st->print(": %s", java_lang_String::as_utf8_string(msg));
1142 }
1143 }
1146 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1147 ResourceMark rm;
1148 Klass* k = throwable->klass();
1149 assert(k != NULL, "just checking");
1150 st->print("%s", InstanceKlass::cast(k)->external_name());
1151 oop msg = message(throwable);
1152 if (msg != NULL) {
1153 st->print(": %s", java_lang_String::as_utf8_string(msg));
1154 }
1155 }
1157 // Print stack trace element to resource allocated buffer
1158 char* java_lang_Throwable::print_stack_element_to_buffer(Method* method, int bci) {
1159 // Get strings and string lengths
1160 InstanceKlass* klass = InstanceKlass::cast(method->method_holder());
1161 const char* klass_name = klass->external_name();
1162 int buf_len = (int)strlen(klass_name);
1163 char* source_file_name;
1164 if (klass->source_file_name() == NULL) {
1165 source_file_name = NULL;
1166 } else {
1167 source_file_name = klass->source_file_name()->as_C_string();
1168 buf_len += (int)strlen(source_file_name);
1169 }
1170 char* method_name = method->name()->as_C_string();
1171 buf_len += (int)strlen(method_name);
1173 // Allocate temporary buffer with extra space for formatting and line number
1174 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1176 // Print stack trace line in buffer
1177 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1178 if (method->is_native()) {
1179 strcat(buf, "(Native Method)");
1180 } else {
1181 int line_number = method->line_number_from_bci(bci);
1182 if (source_file_name != NULL && (line_number != -1)) {
1183 // Sourcename and linenumber
1184 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1185 } else if (source_file_name != NULL) {
1186 // Just sourcename
1187 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1188 } else {
1189 // Neither soucename and linenumber
1190 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1191 }
1192 nmethod* nm = method->code();
1193 if (WizardMode && nm != NULL) {
1194 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1195 }
1196 }
1198 return buf;
1199 }
1202 void java_lang_Throwable::print_stack_element(Handle stream, Method* method, int bci) {
1203 ResourceMark rm;
1204 char* buf = print_stack_element_to_buffer(method, bci);
1205 print_to_stream(stream, buf);
1206 }
1208 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
1209 ResourceMark rm;
1210 char* buf = print_stack_element_to_buffer(method, bci);
1211 st->print_cr("%s", buf);
1212 }
1214 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1215 if (stream.is_null()) {
1216 tty->print_cr("%s", str);
1217 } else {
1218 EXCEPTION_MARK;
1219 JavaValue result(T_VOID);
1220 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1221 if (!HAS_PENDING_EXCEPTION) {
1222 JavaCalls::call_virtual(&result,
1223 stream,
1224 KlassHandle(THREAD, stream->klass()),
1225 vmSymbols::println_name(),
1226 vmSymbols::char_array_void_signature(),
1227 arg,
1228 THREAD);
1229 }
1230 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1231 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1232 }
1234 }
1237 const char* java_lang_Throwable::no_stack_trace_message() {
1238 return "\t<<no stack trace available>>";
1239 }
1242 // Currently used only for exceptions occurring during startup
1243 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1244 Thread *THREAD = Thread::current();
1245 Handle h_throwable(THREAD, throwable);
1246 while (h_throwable.not_null()) {
1247 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1248 if (result.is_null()) {
1249 st->print_cr(no_stack_trace_message());
1250 return;
1251 }
1253 while (result.not_null()) {
1254 typeArrayHandle methods (THREAD,
1255 typeArrayOop(result->obj_at(trace_methods_offset)));
1256 typeArrayHandle bcis (THREAD,
1257 typeArrayOop(result->obj_at(trace_bcis_offset)));
1259 if (methods.is_null() || bcis.is_null()) {
1260 st->print_cr(no_stack_trace_message());
1261 return;
1262 }
1264 int length = methods()->length();
1265 for (int index = 0; index < length; index++) {
1266 Method* method = ((Method*)methods()->metadata_at(index));
1267 if (method == NULL) goto handle_cause;
1268 int bci = bcis->ushort_at(index);
1269 print_stack_element(st, method, bci);
1270 }
1271 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1272 }
1273 handle_cause:
1274 {
1275 EXCEPTION_MARK;
1276 JavaValue result(T_OBJECT);
1277 JavaCalls::call_virtual(&result,
1278 h_throwable,
1279 KlassHandle(THREAD, h_throwable->klass()),
1280 vmSymbols::getCause_name(),
1281 vmSymbols::void_throwable_signature(),
1282 THREAD);
1283 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1284 if (HAS_PENDING_EXCEPTION) {
1285 CLEAR_PENDING_EXCEPTION;
1286 h_throwable = Handle();
1287 } else {
1288 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1289 if (h_throwable.not_null()) {
1290 st->print("Caused by: ");
1291 print(h_throwable, st);
1292 st->cr();
1293 }
1294 }
1295 }
1296 }
1297 }
1300 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1301 // Note: this is no longer used in Merlin, but we support it for compatibility.
1302 Thread *thread = Thread::current();
1303 Handle stream(thread, print_stream);
1304 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1305 if (result.is_null()) {
1306 print_to_stream(stream, no_stack_trace_message());
1307 return;
1308 }
1310 while (result.not_null()) {
1311 typeArrayHandle methods(thread,
1312 typeArrayOop(result->obj_at(trace_methods_offset)));
1313 typeArrayHandle bcis (thread,
1314 typeArrayOop(result->obj_at(trace_bcis_offset)));
1316 if (methods.is_null() || bcis.is_null()) {
1317 print_to_stream(stream, no_stack_trace_message());
1318 return;
1319 }
1321 int length = methods()->length();
1322 for (int index = 0; index < length; index++) {
1323 Method* method = ((Method*)methods()->metadata_at(index));
1324 if (method == NULL) return;
1325 int bci = bcis->ushort_at(index);
1326 print_stack_element(stream, method, bci);
1327 }
1328 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1329 }
1330 }
1332 // This class provides a simple wrapper over the internal structure of
1333 // exception backtrace to insulate users of the backtrace from needing
1334 // to know what it looks like.
1335 class BacktraceBuilder: public StackObj {
1336 private:
1337 Handle _backtrace;
1338 objArrayOop _head;
1339 typeArrayOop _methods;
1340 typeArrayOop _bcis;
1341 objArrayOop _mirrors;
1342 int _index;
1343 No_Safepoint_Verifier _nsv;
1345 public:
1347 enum {
1348 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1349 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1350 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1351 trace_next_offset = java_lang_Throwable::trace_next_offset,
1352 trace_size = java_lang_Throwable::trace_size,
1353 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1354 };
1356 // constructor for new backtrace
1357 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1358 expand(CHECK);
1359 _backtrace = _head;
1360 _index = 0;
1361 }
1363 void expand(TRAPS) {
1364 objArrayHandle old_head(THREAD, _head);
1365 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1367 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1368 objArrayHandle new_head(THREAD, head);
1370 typeArrayOop methods = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1371 typeArrayHandle new_methods(THREAD, methods);
1373 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1374 typeArrayHandle new_bcis(THREAD, bcis);
1376 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1377 objArrayHandle new_mirrors(THREAD, mirrors);
1379 if (!old_head.is_null()) {
1380 old_head->obj_at_put(trace_next_offset, new_head());
1381 }
1382 new_head->obj_at_put(trace_methods_offset, new_methods());
1383 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1384 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1386 _head = new_head();
1387 _methods = new_methods();
1388 _bcis = new_bcis();
1389 _mirrors = new_mirrors();
1390 _index = 0;
1391 }
1393 oop backtrace() {
1394 return _backtrace();
1395 }
1397 inline void push(Method* method, int bci, TRAPS) {
1398 // Smear the -1 bci to 0 since the array only holds unsigned
1399 // shorts. The later line number lookup would just smear the -1
1400 // to a 0 even if it could be recorded.
1401 if (bci == SynchronizationEntryBCI) bci = 0;
1402 assert(bci == (jushort)bci, "doesn't fit");
1404 if (_index >= trace_chunk_size) {
1405 methodHandle mhandle(THREAD, method);
1406 expand(CHECK);
1407 method = mhandle();
1408 }
1410 _methods->metadata_at_put(_index, method);
1411 _bcis->ushort_at_put(_index, bci);
1412 // we need to save the mirrors in the backtrace to keep the methods from
1413 // being unloaded if their class loader is unloaded while we still have
1414 // this stack trace.
1415 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1416 _index++;
1417 }
1419 Method* current_method() {
1420 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1421 return ((Method*)_methods->metadata_at(_index));
1422 }
1424 jushort current_bci() {
1425 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1426 return _bcis->ushort_at(_index);
1427 }
1428 };
1431 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1432 if (!StackTraceInThrowable) return;
1433 ResourceMark rm(THREAD);
1435 // Start out by clearing the backtrace for this object, in case the VM
1436 // runs out of memory while allocating the stack trace
1437 set_backtrace(throwable(), NULL);
1438 if (JDK_Version::is_gte_jdk14x_version()) {
1439 // New since 1.4, clear lazily constructed Java level stacktrace if
1440 // refilling occurs
1441 // This is unnecessary in 1.7+ but harmless
1442 clear_stacktrace(throwable());
1443 }
1445 int max_depth = MaxJavaStackTraceDepth;
1446 JavaThread* thread = (JavaThread*)THREAD;
1447 BacktraceBuilder bt(CHECK);
1449 // If there is no Java frame just return the method that was being called
1450 // with bci 0
1451 if (!thread->has_last_Java_frame()) {
1452 if (max_depth >= 1 && method() != NULL) {
1453 bt.push(method(), 0, CHECK);
1454 set_backtrace(throwable(), bt.backtrace());
1455 }
1456 return;
1457 }
1459 // Instead of using vframe directly, this version of fill_in_stack_trace
1460 // basically handles everything by hand. This significantly improved the
1461 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1462 // See bug 6333838 for more details.
1463 // The "ASSERT" here is to verify this method generates the exactly same stack
1464 // trace as utilizing vframe.
1465 #ifdef ASSERT
1466 vframeStream st(thread);
1467 methodHandle st_method(THREAD, st.method());
1468 #endif
1469 int total_count = 0;
1470 RegisterMap map(thread, false);
1471 int decode_offset = 0;
1472 nmethod* nm = NULL;
1473 bool skip_fillInStackTrace_check = false;
1474 bool skip_throwableInit_check = false;
1475 bool skip_hidden = !ShowHiddenFrames;
1477 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1478 Method* method = NULL;
1479 int bci = 0;
1481 // Compiled java method case.
1482 if (decode_offset != 0) {
1483 DebugInfoReadStream stream(nm, decode_offset);
1484 decode_offset = stream.read_int();
1485 method = (Method*)nm->metadata_at(stream.read_int());
1486 bci = stream.read_bci();
1487 } else {
1488 if (fr.is_first_frame()) break;
1489 address pc = fr.pc();
1490 if (fr.is_interpreted_frame()) {
1491 intptr_t bcx = fr.interpreter_frame_bcx();
1492 method = fr.interpreter_frame_method();
1493 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1494 fr = fr.sender(&map);
1495 } else {
1496 CodeBlob* cb = fr.cb();
1497 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1498 // but non nmethod
1499 fr = fr.sender(&map);
1500 if (cb == NULL || !cb->is_nmethod()) {
1501 continue;
1502 }
1503 nm = (nmethod*)cb;
1504 if (nm->method()->is_native()) {
1505 method = nm->method();
1506 bci = 0;
1507 } else {
1508 PcDesc* pd = nm->pc_desc_at(pc);
1509 decode_offset = pd->scope_decode_offset();
1510 // if decode_offset is not equal to 0, it will execute the
1511 // "compiled java method case" at the beginning of the loop.
1512 continue;
1513 }
1514 }
1515 }
1516 #ifdef ASSERT
1517 assert(st_method() == method && st.bci() == bci,
1518 "Wrong stack trace");
1519 st.next();
1520 // vframeStream::method isn't GC-safe so store off a copy
1521 // of the Method* in case we GC.
1522 if (!st.at_end()) {
1523 st_method = st.method();
1524 }
1525 #endif
1527 // the format of the stacktrace will be:
1528 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1529 // - 0 or more <init> methods for the exception class (skipped)
1530 // - rest of the stack
1532 if (!skip_fillInStackTrace_check) {
1533 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1534 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1535 throwable->is_a(method->method_holder())) {
1536 continue;
1537 }
1538 else {
1539 skip_fillInStackTrace_check = true; // gone past them all
1540 }
1541 }
1542 if (!skip_throwableInit_check) {
1543 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1545 // skip <init> methods of the exception class and superclasses
1546 // This is simlar to classic VM.
1547 if (method->name() == vmSymbols::object_initializer_name() &&
1548 throwable->is_a(method->method_holder())) {
1549 continue;
1550 } else {
1551 // there are none or we've seen them all - either way stop checking
1552 skip_throwableInit_check = true;
1553 }
1554 }
1555 if (method->is_hidden()) {
1556 if (skip_hidden) continue;
1557 }
1558 bt.push(method, bci, CHECK);
1559 total_count++;
1560 }
1562 // Put completed stack trace into throwable object
1563 set_backtrace(throwable(), bt.backtrace());
1564 }
1566 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1567 // No-op if stack trace is disabled
1568 if (!StackTraceInThrowable) {
1569 return;
1570 }
1572 // Disable stack traces for some preallocated out of memory errors
1573 if (!Universe::should_fill_in_stack_trace(throwable)) {
1574 return;
1575 }
1577 PRESERVE_EXCEPTION_MARK;
1579 JavaThread* thread = JavaThread::active();
1580 fill_in_stack_trace(throwable, method, thread);
1581 // ignore exceptions thrown during stack trace filling
1582 CLEAR_PENDING_EXCEPTION;
1583 }
1585 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1586 // Allocate stack trace - backtrace is created but not filled in
1588 // No-op if stack trace is disabled
1589 if (!StackTraceInThrowable) return;
1591 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1592 objArrayHandle backtrace (THREAD, h_oop);
1593 typeArrayOop m_oop = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1594 typeArrayHandle methods (THREAD, m_oop);
1595 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1596 typeArrayHandle bcis(THREAD, b);
1597 objArrayOop mirror_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1598 objArrayHandle mirrors (THREAD, mirror_oop);
1600 // backtrace has space for one chunk (next is NULL)
1601 backtrace->obj_at_put(trace_methods_offset, methods());
1602 backtrace->obj_at_put(trace_bcis_offset, bcis());
1603 backtrace->obj_at_put(trace_mirrors_offset, mirrors());
1604 set_backtrace(throwable(), backtrace());
1605 }
1608 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1609 // Fill in stack trace into preallocated backtrace (no GC)
1611 // No-op if stack trace is disabled
1612 if (!StackTraceInThrowable) return;
1614 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1616 objArrayOop backtrace = (objArrayOop)java_lang_Throwable::backtrace(throwable());
1617 assert(backtrace != NULL, "backtrace not preallocated");
1619 oop m = backtrace->obj_at(trace_methods_offset);
1620 typeArrayOop methods = typeArrayOop(m);
1621 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1623 oop b = backtrace->obj_at(trace_bcis_offset);
1624 typeArrayOop bcis = typeArrayOop(b);
1625 assert(bcis != NULL, "bci array not preallocated");
1627 oop mr = backtrace->obj_at(trace_mirrors_offset);
1628 objArrayOop mirrors = objArrayOop(mr);
1629 assert(mirrors != NULL, "bci array not preallocated");
1631 assert(methods->length() == bcis->length() &&
1632 methods->length() == mirrors->length(),
1633 "method and bci arrays should match");
1635 JavaThread* thread = JavaThread::current();
1636 ResourceMark rm(thread);
1637 vframeStream st(thread);
1639 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1640 // methods as preallocated errors aren't created by "java" code.
1642 // fill in as much stack trace as possible
1643 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1644 int chunk_count = 0;
1646 for (;!st.at_end(); st.next()) {
1647 // Add entry and smear the -1 bci to 0 since the array only holds
1648 // unsigned shorts. The later line number lookup would just smear
1649 // the -1 to a 0 even if it could be recorded.
1650 int bci = st.bci();
1651 if (bci == SynchronizationEntryBCI) bci = 0;
1652 assert(bci == (jushort)bci, "doesn't fit");
1653 bcis->ushort_at_put(chunk_count, bci);
1654 methods->metadata_at_put(chunk_count, st.method());
1655 mirrors->obj_at_put(chunk_count,
1656 st.method()->method_holder()->java_mirror());
1658 chunk_count++;
1660 // Bail-out for deep stacks
1661 if (chunk_count >= max_chunks) break;
1662 }
1664 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1665 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1666 // can be removed in a JDK using this JVM version
1667 if (JDK_Version::is_gte_jdk17x_version()) {
1668 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1669 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1670 }
1672 }
1675 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1676 if (throwable == NULL) {
1677 THROW_0(vmSymbols::java_lang_NullPointerException());
1678 }
1679 objArrayOop chunk = objArrayOop(backtrace(throwable));
1680 int depth = 0;
1681 if (chunk != NULL) {
1682 // Iterate over chunks and count full ones
1683 while (true) {
1684 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1685 if (next == NULL) break;
1686 depth += trace_chunk_size;
1687 chunk = next;
1688 }
1689 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1690 // Count element in remaining partial chunk
1691 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1692 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1693 assert(methods != NULL && bcis != NULL, "sanity check");
1694 for (int i = 0; i < methods->length(); i++) {
1695 if (methods->metadata_at(i) == NULL) break;
1696 depth++;
1697 }
1698 }
1699 return depth;
1700 }
1703 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1704 if (throwable == NULL) {
1705 THROW_0(vmSymbols::java_lang_NullPointerException());
1706 }
1707 if (index < 0) {
1708 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1709 }
1710 // Compute how many chunks to skip and index into actual chunk
1711 objArrayOop chunk = objArrayOop(backtrace(throwable));
1712 int skip_chunks = index / trace_chunk_size;
1713 int chunk_index = index % trace_chunk_size;
1714 while (chunk != NULL && skip_chunks > 0) {
1715 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1716 skip_chunks--;
1717 }
1718 if (chunk == NULL) {
1719 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1720 }
1721 // Get method,bci from chunk
1722 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1723 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1724 assert(methods != NULL && bcis != NULL, "sanity check");
1725 methodHandle method(THREAD, ((Method*)methods->metadata_at(chunk_index)));
1726 int bci = bcis->ushort_at(chunk_index);
1727 // Chunk can be partial full
1728 if (method.is_null()) {
1729 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1730 }
1732 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1733 return element;
1734 }
1736 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1737 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1738 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1740 // Allocate java.lang.StackTraceElement instance
1741 Klass* k = SystemDictionary::StackTraceElement_klass();
1742 assert(k != NULL, "must be loaded in 1.4+");
1743 instanceKlassHandle ik (THREAD, k);
1744 if (ik->should_be_initialized()) {
1745 ik->initialize(CHECK_0);
1746 }
1748 Handle element = ik->allocate_instance_handle(CHECK_0);
1749 // Fill in class name
1750 ResourceMark rm(THREAD);
1751 const char* str = InstanceKlass::cast(method->method_holder())->external_name();
1752 oop classname = StringTable::intern((char*) str, CHECK_0);
1753 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1754 // Fill in method name
1755 oop methodname = StringTable::intern(method->name(), CHECK_0);
1756 java_lang_StackTraceElement::set_methodName(element(), methodname);
1757 // Fill in source file name
1758 Symbol* source = InstanceKlass::cast(method->method_holder())->source_file_name();
1759 if (ShowHiddenFrames && source == NULL)
1760 source = vmSymbols::unknown_class_name();
1761 oop filename = StringTable::intern(source, CHECK_0);
1762 java_lang_StackTraceElement::set_fileName(element(), filename);
1763 // File in source line number
1764 int line_number;
1765 if (method->is_native()) {
1766 // Negative value different from -1 below, enabling Java code in
1767 // class java.lang.StackTraceElement to distinguish "native" from
1768 // "no LineNumberTable".
1769 line_number = -2;
1770 } else {
1771 // Returns -1 if no LineNumberTable, and otherwise actual line number
1772 line_number = method->line_number_from_bci(bci);
1773 if (line_number == -1 && ShowHiddenFrames) {
1774 line_number = bci + 1000000;
1775 }
1776 }
1777 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1779 return element();
1780 }
1783 void java_lang_reflect_AccessibleObject::compute_offsets() {
1784 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1785 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1786 }
1788 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1789 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1790 return (jboolean) reflect->bool_field(override_offset);
1791 }
1793 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1794 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1795 reflect->bool_field_put(override_offset, (int) value);
1796 }
1798 void java_lang_reflect_Method::compute_offsets() {
1799 Klass* k = SystemDictionary::reflect_Method_klass();
1800 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1801 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1802 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1803 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1804 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1805 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1806 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1807 // The generic signature and annotations fields are only present in 1.5
1808 signature_offset = -1;
1809 annotations_offset = -1;
1810 parameter_annotations_offset = -1;
1811 annotation_default_offset = -1;
1812 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1813 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1814 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1815 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1816 }
1818 Handle java_lang_reflect_Method::create(TRAPS) {
1819 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1820 Klass* klass = SystemDictionary::reflect_Method_klass();
1821 // This class is eagerly initialized during VM initialization, since we keep a refence
1822 // to one of the methods
1823 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1824 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1825 }
1827 oop java_lang_reflect_Method::clazz(oop reflect) {
1828 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1829 return reflect->obj_field(clazz_offset);
1830 }
1832 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1833 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1834 reflect->obj_field_put(clazz_offset, value);
1835 }
1837 int java_lang_reflect_Method::slot(oop reflect) {
1838 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1839 return reflect->int_field(slot_offset);
1840 }
1842 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1844 reflect->int_field_put(slot_offset, value);
1845 }
1847 oop java_lang_reflect_Method::name(oop method) {
1848 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1849 return method->obj_field(name_offset);
1850 }
1852 void java_lang_reflect_Method::set_name(oop method, oop value) {
1853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1854 method->obj_field_put(name_offset, value);
1855 }
1857 oop java_lang_reflect_Method::return_type(oop method) {
1858 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1859 return method->obj_field(returnType_offset);
1860 }
1862 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1864 method->obj_field_put(returnType_offset, value);
1865 }
1867 oop java_lang_reflect_Method::parameter_types(oop method) {
1868 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1869 return method->obj_field(parameterTypes_offset);
1870 }
1872 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1874 method->obj_field_put(parameterTypes_offset, value);
1875 }
1877 oop java_lang_reflect_Method::exception_types(oop method) {
1878 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1879 return method->obj_field(exceptionTypes_offset);
1880 }
1882 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1884 method->obj_field_put(exceptionTypes_offset, value);
1885 }
1887 int java_lang_reflect_Method::modifiers(oop method) {
1888 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1889 return method->int_field(modifiers_offset);
1890 }
1892 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1893 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1894 method->int_field_put(modifiers_offset, value);
1895 }
1897 bool java_lang_reflect_Method::has_signature_field() {
1898 return (signature_offset >= 0);
1899 }
1901 oop java_lang_reflect_Method::signature(oop method) {
1902 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1903 assert(has_signature_field(), "signature field must be present");
1904 return method->obj_field(signature_offset);
1905 }
1907 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 assert(has_signature_field(), "signature field must be present");
1910 method->obj_field_put(signature_offset, value);
1911 }
1913 bool java_lang_reflect_Method::has_annotations_field() {
1914 return (annotations_offset >= 0);
1915 }
1917 oop java_lang_reflect_Method::annotations(oop method) {
1918 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1919 assert(has_annotations_field(), "annotations field must be present");
1920 return method->obj_field(annotations_offset);
1921 }
1923 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1924 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1925 assert(has_annotations_field(), "annotations field must be present");
1926 method->obj_field_put(annotations_offset, value);
1927 }
1929 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1930 return (parameter_annotations_offset >= 0);
1931 }
1933 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1934 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1935 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1936 return method->obj_field(parameter_annotations_offset);
1937 }
1939 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1941 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1942 method->obj_field_put(parameter_annotations_offset, value);
1943 }
1945 bool java_lang_reflect_Method::has_annotation_default_field() {
1946 return (annotation_default_offset >= 0);
1947 }
1949 oop java_lang_reflect_Method::annotation_default(oop method) {
1950 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1951 assert(has_annotation_default_field(), "annotation default field must be present");
1952 return method->obj_field(annotation_default_offset);
1953 }
1955 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 assert(has_annotation_default_field(), "annotation default field must be present");
1958 method->obj_field_put(annotation_default_offset, value);
1959 }
1961 void java_lang_reflect_Constructor::compute_offsets() {
1962 Klass* k = SystemDictionary::reflect_Constructor_klass();
1963 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1964 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1965 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1966 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1967 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1968 // The generic signature and annotations fields are only present in 1.5
1969 signature_offset = -1;
1970 annotations_offset = -1;
1971 parameter_annotations_offset = -1;
1972 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1973 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1974 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1975 }
1977 Handle java_lang_reflect_Constructor::create(TRAPS) {
1978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1979 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1980 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1981 instanceKlassHandle klass (THREAD, k);
1982 // Ensure it is initialized
1983 klass->initialize(CHECK_NH);
1984 return klass->allocate_instance_handle(CHECK_NH);
1985 }
1987 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1988 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1989 return reflect->obj_field(clazz_offset);
1990 }
1992 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1994 reflect->obj_field_put(clazz_offset, value);
1995 }
1997 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1998 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1999 return constructor->obj_field(parameterTypes_offset);
2000 }
2002 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2004 constructor->obj_field_put(parameterTypes_offset, value);
2005 }
2007 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2008 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2009 return constructor->obj_field(exceptionTypes_offset);
2010 }
2012 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2013 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2014 constructor->obj_field_put(exceptionTypes_offset, value);
2015 }
2017 int java_lang_reflect_Constructor::slot(oop reflect) {
2018 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2019 return reflect->int_field(slot_offset);
2020 }
2022 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2023 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2024 reflect->int_field_put(slot_offset, value);
2025 }
2027 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2028 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2029 return constructor->int_field(modifiers_offset);
2030 }
2032 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2033 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2034 constructor->int_field_put(modifiers_offset, value);
2035 }
2037 bool java_lang_reflect_Constructor::has_signature_field() {
2038 return (signature_offset >= 0);
2039 }
2041 oop java_lang_reflect_Constructor::signature(oop constructor) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 assert(has_signature_field(), "signature field must be present");
2044 return constructor->obj_field(signature_offset);
2045 }
2047 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2048 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2049 assert(has_signature_field(), "signature field must be present");
2050 constructor->obj_field_put(signature_offset, value);
2051 }
2053 bool java_lang_reflect_Constructor::has_annotations_field() {
2054 return (annotations_offset >= 0);
2055 }
2057 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2059 assert(has_annotations_field(), "annotations field must be present");
2060 return constructor->obj_field(annotations_offset);
2061 }
2063 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2065 assert(has_annotations_field(), "annotations field must be present");
2066 constructor->obj_field_put(annotations_offset, value);
2067 }
2069 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2070 return (parameter_annotations_offset >= 0);
2071 }
2073 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2074 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2075 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2076 return method->obj_field(parameter_annotations_offset);
2077 }
2079 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2080 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2081 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2082 method->obj_field_put(parameter_annotations_offset, value);
2083 }
2085 void java_lang_reflect_Field::compute_offsets() {
2086 Klass* k = SystemDictionary::reflect_Field_klass();
2087 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2088 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2089 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2090 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2091 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2092 // The generic signature and annotations fields are only present in 1.5
2093 signature_offset = -1;
2094 annotations_offset = -1;
2095 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2096 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2097 }
2099 Handle java_lang_reflect_Field::create(TRAPS) {
2100 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2101 Symbol* name = vmSymbols::java_lang_reflect_Field();
2102 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2103 instanceKlassHandle klass (THREAD, k);
2104 // Ensure it is initialized
2105 klass->initialize(CHECK_NH);
2106 return klass->allocate_instance_handle(CHECK_NH);
2107 }
2109 oop java_lang_reflect_Field::clazz(oop reflect) {
2110 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2111 return reflect->obj_field(clazz_offset);
2112 }
2114 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2115 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2116 reflect->obj_field_put(clazz_offset, value);
2117 }
2119 oop java_lang_reflect_Field::name(oop field) {
2120 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2121 return field->obj_field(name_offset);
2122 }
2124 void java_lang_reflect_Field::set_name(oop field, oop value) {
2125 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2126 field->obj_field_put(name_offset, value);
2127 }
2129 oop java_lang_reflect_Field::type(oop field) {
2130 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2131 return field->obj_field(type_offset);
2132 }
2134 void java_lang_reflect_Field::set_type(oop field, oop value) {
2135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2136 field->obj_field_put(type_offset, value);
2137 }
2139 int java_lang_reflect_Field::slot(oop reflect) {
2140 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2141 return reflect->int_field(slot_offset);
2142 }
2144 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2145 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2146 reflect->int_field_put(slot_offset, value);
2147 }
2149 int java_lang_reflect_Field::modifiers(oop field) {
2150 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2151 return field->int_field(modifiers_offset);
2152 }
2154 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2155 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2156 field->int_field_put(modifiers_offset, value);
2157 }
2159 bool java_lang_reflect_Field::has_signature_field() {
2160 return (signature_offset >= 0);
2161 }
2163 oop java_lang_reflect_Field::signature(oop field) {
2164 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2165 assert(has_signature_field(), "signature field must be present");
2166 return field->obj_field(signature_offset);
2167 }
2169 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2170 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2171 assert(has_signature_field(), "signature field must be present");
2172 field->obj_field_put(signature_offset, value);
2173 }
2175 bool java_lang_reflect_Field::has_annotations_field() {
2176 return (annotations_offset >= 0);
2177 }
2179 oop java_lang_reflect_Field::annotations(oop field) {
2180 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2181 assert(has_annotations_field(), "annotations field must be present");
2182 return field->obj_field(annotations_offset);
2183 }
2185 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2186 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2187 assert(has_annotations_field(), "annotations field must be present");
2188 field->obj_field_put(annotations_offset, value);
2189 }
2192 void sun_reflect_ConstantPool::compute_offsets() {
2193 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2194 // This null test can be removed post beta
2195 if (k != NULL) {
2196 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2197 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2198 }
2199 }
2202 Handle sun_reflect_ConstantPool::create(TRAPS) {
2203 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2204 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2205 instanceKlassHandle klass (THREAD, k);
2206 // Ensure it is initialized
2207 klass->initialize(CHECK_NH);
2208 return klass->allocate_instance_handle(CHECK_NH);
2209 }
2212 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2213 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2214 oop mirror = value->pool_holder()->java_mirror();
2215 // Save the mirror to get back the constant pool.
2216 reflect->obj_field_put(_oop_offset, mirror);
2217 }
2219 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2220 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2222 oop mirror = reflect->obj_field(_oop_offset);
2223 Klass* k = java_lang_Class::as_Klass(mirror);
2224 assert(k->oop_is_instance(), "Must be");
2226 // Get the constant pool back from the klass. Since class redefinition
2227 // merges the new constant pool into the old, this is essentially the
2228 // same constant pool as the original. If constant pool merging is
2229 // no longer done in the future, this will have to change to save
2230 // the original.
2231 return InstanceKlass::cast(k)->constants();
2232 }
2234 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2235 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2236 // This null test can be removed post beta
2237 if (k != NULL) {
2238 compute_offset(_base_offset, k,
2239 vmSymbols::base_name(), vmSymbols::object_signature());
2240 }
2241 }
2243 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2244 Klass* k = SystemDictionary::box_klass(type);
2245 if (k == NULL) return NULL;
2246 instanceKlassHandle h (THREAD, k);
2247 if (!h->is_initialized()) h->initialize(CHECK_0);
2248 return h->allocate_instance(THREAD);
2249 }
2252 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2253 oop box = initialize_and_allocate(type, CHECK_0);
2254 if (box == NULL) return NULL;
2255 switch (type) {
2256 case T_BOOLEAN:
2257 box->bool_field_put(value_offset, value->z);
2258 break;
2259 case T_CHAR:
2260 box->char_field_put(value_offset, value->c);
2261 break;
2262 case T_FLOAT:
2263 box->float_field_put(value_offset, value->f);
2264 break;
2265 case T_DOUBLE:
2266 box->double_field_put(long_value_offset, value->d);
2267 break;
2268 case T_BYTE:
2269 box->byte_field_put(value_offset, value->b);
2270 break;
2271 case T_SHORT:
2272 box->short_field_put(value_offset, value->s);
2273 break;
2274 case T_INT:
2275 box->int_field_put(value_offset, value->i);
2276 break;
2277 case T_LONG:
2278 box->long_field_put(long_value_offset, value->j);
2279 break;
2280 default:
2281 return NULL;
2282 }
2283 return box;
2284 }
2287 BasicType java_lang_boxing_object::basic_type(oop box) {
2288 if (box == NULL) return T_ILLEGAL;
2289 BasicType type = SystemDictionary::box_klass_type(box->klass());
2290 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2291 return T_ILLEGAL;
2292 return type;
2293 }
2296 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2297 BasicType type = SystemDictionary::box_klass_type(box->klass());
2298 switch (type) {
2299 case T_BOOLEAN:
2300 value->z = box->bool_field(value_offset);
2301 break;
2302 case T_CHAR:
2303 value->c = box->char_field(value_offset);
2304 break;
2305 case T_FLOAT:
2306 value->f = box->float_field(value_offset);
2307 break;
2308 case T_DOUBLE:
2309 value->d = box->double_field(long_value_offset);
2310 break;
2311 case T_BYTE:
2312 value->b = box->byte_field(value_offset);
2313 break;
2314 case T_SHORT:
2315 value->s = box->short_field(value_offset);
2316 break;
2317 case T_INT:
2318 value->i = box->int_field(value_offset);
2319 break;
2320 case T_LONG:
2321 value->j = box->long_field(long_value_offset);
2322 break;
2323 default:
2324 return T_ILLEGAL;
2325 } // end switch
2326 return type;
2327 }
2330 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2331 BasicType type = SystemDictionary::box_klass_type(box->klass());
2332 switch (type) {
2333 case T_BOOLEAN:
2334 box->bool_field_put(value_offset, value->z);
2335 break;
2336 case T_CHAR:
2337 box->char_field_put(value_offset, value->c);
2338 break;
2339 case T_FLOAT:
2340 box->float_field_put(value_offset, value->f);
2341 break;
2342 case T_DOUBLE:
2343 box->double_field_put(long_value_offset, value->d);
2344 break;
2345 case T_BYTE:
2346 box->byte_field_put(value_offset, value->b);
2347 break;
2348 case T_SHORT:
2349 box->short_field_put(value_offset, value->s);
2350 break;
2351 case T_INT:
2352 box->int_field_put(value_offset, value->i);
2353 break;
2354 case T_LONG:
2355 box->long_field_put(long_value_offset, value->j);
2356 break;
2357 default:
2358 return T_ILLEGAL;
2359 } // end switch
2360 return type;
2361 }
2364 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2365 switch (type) {
2366 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2367 case T_CHAR: st->print("%d", value->c); break;
2368 case T_BYTE: st->print("%d", value->b); break;
2369 case T_SHORT: st->print("%d", value->s); break;
2370 case T_INT: st->print("%d", value->i); break;
2371 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2372 case T_FLOAT: st->print("%f", value->f); break;
2373 case T_DOUBLE: st->print("%lf", value->d); break;
2374 default: st->print("type %d?", type); break;
2375 }
2376 }
2379 // Support for java_lang_ref_Reference
2380 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2381 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2382 address addr = ik->static_field_addr(static_lock_offset);
2383 return (HeapWord*) addr;
2384 }
2386 oop java_lang_ref_Reference::pending_list_lock() {
2387 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2388 address addr = ik->static_field_addr(static_lock_offset);
2389 if (UseCompressedOops) {
2390 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2391 } else {
2392 return oopDesc::load_decode_heap_oop((oop*)addr);
2393 }
2394 }
2396 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2397 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2398 address addr = ik->static_field_addr(static_pending_offset);
2399 // XXX This might not be HeapWord aligned, almost rather be char *.
2400 return (HeapWord*)addr;
2401 }
2403 oop java_lang_ref_Reference::pending_list() {
2404 char *addr = (char *)pending_list_addr();
2405 if (UseCompressedOops) {
2406 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2407 } else {
2408 return oopDesc::load_decode_heap_oop((oop*)addr);
2409 }
2410 }
2413 // Support for java_lang_ref_SoftReference
2415 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2416 return ref->long_field(timestamp_offset);
2417 }
2419 jlong java_lang_ref_SoftReference::clock() {
2420 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2421 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2422 return *offset;
2423 }
2425 void java_lang_ref_SoftReference::set_clock(jlong value) {
2426 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2427 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2428 *offset = value;
2429 }
2432 // Support for java_lang_invoke_MethodHandle
2434 int java_lang_invoke_MethodHandle::_type_offset;
2435 int java_lang_invoke_MethodHandle::_form_offset;
2437 int java_lang_invoke_MemberName::_clazz_offset;
2438 int java_lang_invoke_MemberName::_name_offset;
2439 int java_lang_invoke_MemberName::_type_offset;
2440 int java_lang_invoke_MemberName::_flags_offset;
2441 int java_lang_invoke_MemberName::_vmtarget_offset;
2442 int java_lang_invoke_MemberName::_vmloader_offset;
2443 int java_lang_invoke_MemberName::_vmindex_offset;
2445 int java_lang_invoke_LambdaForm::_vmentry_offset;
2447 void java_lang_invoke_MethodHandle::compute_offsets() {
2448 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2449 if (klass_oop != NULL && EnableInvokeDynamic) {
2450 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2451 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2452 if (_form_offset == 0) {
2453 EnableInvokeDynamic = false;
2454 }
2455 }
2456 }
2458 void java_lang_invoke_MemberName::compute_offsets() {
2459 Klass* klass_oop = SystemDictionary::MemberName_klass();
2460 if (klass_oop != NULL && EnableInvokeDynamic) {
2461 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2462 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2463 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2464 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2465 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2466 }
2467 }
2469 void java_lang_invoke_LambdaForm::compute_offsets() {
2470 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2471 if (klass_oop != NULL && EnableInvokeDynamic) {
2472 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2473 }
2474 }
2476 oop java_lang_invoke_MethodHandle::type(oop mh) {
2477 return mh->obj_field(_type_offset);
2478 }
2480 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2481 mh->obj_field_put(_type_offset, mtype);
2482 }
2484 oop java_lang_invoke_MethodHandle::form(oop mh) {
2485 assert(_form_offset != 0, "");
2486 return mh->obj_field(_form_offset);
2487 }
2489 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2490 assert(_form_offset != 0, "");
2491 mh->obj_field_put(_form_offset, lform);
2492 }
2494 /// MemberName accessors
2496 oop java_lang_invoke_MemberName::clazz(oop mname) {
2497 assert(is_instance(mname), "wrong type");
2498 return mname->obj_field(_clazz_offset);
2499 }
2501 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2502 assert(is_instance(mname), "wrong type");
2503 mname->obj_field_put(_clazz_offset, clazz);
2504 }
2506 oop java_lang_invoke_MemberName::name(oop mname) {
2507 assert(is_instance(mname), "wrong type");
2508 return mname->obj_field(_name_offset);
2509 }
2511 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2512 assert(is_instance(mname), "wrong type");
2513 mname->obj_field_put(_name_offset, name);
2514 }
2516 oop java_lang_invoke_MemberName::type(oop mname) {
2517 assert(is_instance(mname), "wrong type");
2518 return mname->obj_field(_type_offset);
2519 }
2521 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2522 assert(is_instance(mname), "wrong type");
2523 mname->obj_field_put(_type_offset, type);
2524 }
2526 int java_lang_invoke_MemberName::flags(oop mname) {
2527 assert(is_instance(mname), "wrong type");
2528 return mname->int_field(_flags_offset);
2529 }
2531 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2532 assert(is_instance(mname), "wrong type");
2533 mname->int_field_put(_flags_offset, flags);
2534 }
2536 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2537 assert(is_instance(mname), "wrong type");
2538 return (Metadata*)mname->address_field(_vmtarget_offset);
2539 }
2541 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2542 assert(is_instance(mname), "wrong type");
2543 #ifdef ASSERT
2544 // check the type of the vmtarget
2545 if (ref != NULL) {
2546 switch (flags(mname) & (MN_IS_METHOD |
2547 MN_IS_CONSTRUCTOR |
2548 MN_IS_FIELD)) {
2549 case MN_IS_METHOD:
2550 case MN_IS_CONSTRUCTOR:
2551 assert(ref->is_method(), "should be a method");
2552 break;
2553 case MN_IS_FIELD:
2554 assert(ref->is_klass(), "should be a class");
2555 break;
2556 default:
2557 ShouldNotReachHere();
2558 }
2559 }
2560 #endif //ASSERT
2561 mname->address_field_put(_vmtarget_offset, (address)ref);
2562 oop loader = NULL;
2563 if (ref != NULL) {
2564 if (ref->is_klass()) {
2565 loader = ((Klass*)ref)->class_loader();
2566 } else if (ref->is_method()) {
2567 loader = ((Method*)ref)->method_holder()->class_loader();
2568 } else {
2569 ShouldNotReachHere();
2570 }
2571 }
2572 // Add a reference to the loader to ensure the metadata is kept alive
2573 mname->obj_field_put(_vmloader_offset, loader);
2574 }
2576 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2577 assert(is_instance(mname), "wrong type");
2578 return (intptr_t) mname->address_field(_vmindex_offset);
2579 }
2581 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2582 assert(is_instance(mname), "wrong type");
2583 mname->address_field_put(_vmindex_offset, (address) index);
2584 }
2586 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2587 assert(is_instance(lform), "wrong type");
2588 return lform->obj_field(_vmentry_offset);
2589 }
2592 // Support for java_lang_invoke_MethodType
2594 int java_lang_invoke_MethodType::_rtype_offset;
2595 int java_lang_invoke_MethodType::_ptypes_offset;
2597 void java_lang_invoke_MethodType::compute_offsets() {
2598 Klass* k = SystemDictionary::MethodType_klass();
2599 if (k != NULL) {
2600 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2601 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2602 }
2603 }
2605 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2606 st->print("(");
2607 objArrayOop pts = ptypes(mt);
2608 for (int i = 0, limit = pts->length(); i < limit; i++) {
2609 java_lang_Class::print_signature(pts->obj_at(i), st);
2610 }
2611 st->print(")");
2612 java_lang_Class::print_signature(rtype(mt), st);
2613 }
2615 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2616 ResourceMark rm;
2617 stringStream buffer(128);
2618 print_signature(mt, &buffer);
2619 const char* sigstr = buffer.base();
2620 int siglen = (int) buffer.size();
2621 Symbol *name;
2622 if (!intern_if_not_found) {
2623 name = SymbolTable::probe(sigstr, siglen);
2624 } else {
2625 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2626 }
2627 return name;
2628 }
2630 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2631 if (mt1 == mt2)
2632 return true;
2633 if (rtype(mt1) != rtype(mt2))
2634 return false;
2635 if (ptype_count(mt1) != ptype_count(mt2))
2636 return false;
2637 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2638 if (ptype(mt1, i) != ptype(mt2, i))
2639 return false;
2640 }
2641 return true;
2642 }
2644 oop java_lang_invoke_MethodType::rtype(oop mt) {
2645 assert(is_instance(mt), "must be a MethodType");
2646 return mt->obj_field(_rtype_offset);
2647 }
2649 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2650 assert(is_instance(mt), "must be a MethodType");
2651 return (objArrayOop) mt->obj_field(_ptypes_offset);
2652 }
2654 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2655 return ptypes(mt)->obj_at(idx);
2656 }
2658 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2659 return ptypes(mt)->length();
2660 }
2662 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2663 objArrayOop pts = ptypes(mt);
2664 int count = pts->length();
2665 int slots = 0;
2666 for (int i = 0; i < count; i++) {
2667 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2668 slots += type2size[bt];
2669 }
2670 return slots;
2671 }
2673 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2674 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2675 return type2size[bt];
2676 }
2679 // Support for java_lang_invoke_CallSite
2681 int java_lang_invoke_CallSite::_target_offset;
2683 void java_lang_invoke_CallSite::compute_offsets() {
2684 if (!EnableInvokeDynamic) return;
2685 Klass* k = SystemDictionary::CallSite_klass();
2686 if (k != NULL) {
2687 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2688 }
2689 }
2692 // Support for java_security_AccessControlContext
2694 int java_security_AccessControlContext::_context_offset = 0;
2695 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2696 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2698 void java_security_AccessControlContext::compute_offsets() {
2699 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2700 fieldDescriptor fd;
2701 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2703 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2704 fatal("Invalid layout of java.security.AccessControlContext");
2705 }
2706 _context_offset = fd.offset();
2708 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2709 fatal("Invalid layout of java.security.AccessControlContext");
2710 }
2711 _privilegedContext_offset = fd.offset();
2713 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2714 fatal("Invalid layout of java.security.AccessControlContext");
2715 }
2716 _isPrivileged_offset = fd.offset();
2717 }
2720 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2721 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2722 // Ensure klass is initialized
2723 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2724 // Allocate result
2725 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2726 // Fill in values
2727 result->obj_field_put(_context_offset, context());
2728 result->obj_field_put(_privilegedContext_offset, privileged_context());
2729 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2730 return result;
2731 }
2734 // Support for java_lang_ClassLoader
2736 bool java_lang_ClassLoader::offsets_computed = false;
2737 int java_lang_ClassLoader::_loader_data_offset = -1;
2738 int java_lang_ClassLoader::_dependencies_offset = -1;
2739 int java_lang_ClassLoader::parallelCapable_offset = -1;
2741 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2742 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2743 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2744 }
2746 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2747 return *java_lang_ClassLoader::loader_data_addr(loader);
2748 }
2750 oop java_lang_ClassLoader::dependencies(oop loader) {
2751 return loader->obj_field(_dependencies_offset);
2752 }
2754 HeapWord* java_lang_ClassLoader::dependencies_addr(oop loader) {
2755 if (UseCompressedOops) {
2756 return (HeapWord*)loader->obj_field_addr<narrowOop>(_dependencies_offset);
2757 } else {
2758 return (HeapWord*)loader->obj_field_addr<oop>(_dependencies_offset);
2759 }
2760 }
2762 void java_lang_ClassLoader::compute_offsets() {
2763 assert(!offsets_computed, "offsets should be initialized only once");
2764 offsets_computed = true;
2766 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2767 Klass* k1 = SystemDictionary::ClassLoader_klass();
2768 compute_optional_offset(parallelCapable_offset,
2769 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2771 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2772 }
2774 oop java_lang_ClassLoader::parent(oop loader) {
2775 assert(is_instance(loader), "loader must be oop");
2776 return loader->obj_field(parent_offset);
2777 }
2779 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2780 assert(is_instance(loader), "loader must be oop");
2781 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2782 oop acl = loader;
2783 debug_only(jint loop_count = 0);
2784 // This loop taken verbatim from ClassLoader.java:
2785 do {
2786 acl = parent(acl);
2787 if (cl == acl) {
2788 return true;
2789 }
2790 assert(++loop_count > 0, "loop_count overflow");
2791 } while (acl != NULL);
2792 return false;
2793 }
2796 // For class loader classes, parallelCapable defined
2797 // based on non-null field
2798 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2799 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2800 if (!JDK_Version::is_gte_jdk17x_version()
2801 || parallelCapable_offset == -1) {
2802 // Default for backward compatibility is false
2803 return false;
2804 }
2805 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2806 }
2808 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2809 // Fix for 4474172; see evaluation for more details
2810 loader = non_reflection_class_loader(loader);
2812 oop cl = SystemDictionary::java_system_loader();
2813 while(cl != NULL) {
2814 if (cl == loader) return true;
2815 cl = parent(cl);
2816 }
2817 return false;
2818 }
2820 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2821 if (loader != NULL) {
2822 // See whether this is one of the class loaders associated with
2823 // the generated bytecodes for reflection, and if so, "magically"
2824 // delegate to its parent to prevent class loading from occurring
2825 // in places where applications using reflection didn't expect it.
2826 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2827 // This might be null in non-1.4 JDKs
2828 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2829 return parent(loader);
2830 }
2831 }
2832 return loader;
2833 }
2836 // Support for java_lang_System
2837 int java_lang_System::in_offset_in_bytes() {
2838 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2839 }
2842 int java_lang_System::out_offset_in_bytes() {
2843 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2844 }
2847 int java_lang_System::err_offset_in_bytes() {
2848 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2849 }
2853 int java_lang_Class::_klass_offset;
2854 int java_lang_Class::_array_klass_offset;
2855 int java_lang_Class::_resolved_constructor_offset;
2856 int java_lang_Class::_oop_size_offset;
2857 int java_lang_Class::_static_oop_field_count_offset;
2858 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2859 int java_lang_Throwable::backtrace_offset;
2860 int java_lang_Throwable::detailMessage_offset;
2861 int java_lang_Throwable::cause_offset;
2862 int java_lang_Throwable::stackTrace_offset;
2863 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2864 int java_lang_reflect_AccessibleObject::override_offset;
2865 int java_lang_reflect_Method::clazz_offset;
2866 int java_lang_reflect_Method::name_offset;
2867 int java_lang_reflect_Method::returnType_offset;
2868 int java_lang_reflect_Method::parameterTypes_offset;
2869 int java_lang_reflect_Method::exceptionTypes_offset;
2870 int java_lang_reflect_Method::slot_offset;
2871 int java_lang_reflect_Method::modifiers_offset;
2872 int java_lang_reflect_Method::signature_offset;
2873 int java_lang_reflect_Method::annotations_offset;
2874 int java_lang_reflect_Method::parameter_annotations_offset;
2875 int java_lang_reflect_Method::annotation_default_offset;
2876 int java_lang_reflect_Constructor::clazz_offset;
2877 int java_lang_reflect_Constructor::parameterTypes_offset;
2878 int java_lang_reflect_Constructor::exceptionTypes_offset;
2879 int java_lang_reflect_Constructor::slot_offset;
2880 int java_lang_reflect_Constructor::modifiers_offset;
2881 int java_lang_reflect_Constructor::signature_offset;
2882 int java_lang_reflect_Constructor::annotations_offset;
2883 int java_lang_reflect_Constructor::parameter_annotations_offset;
2884 int java_lang_reflect_Field::clazz_offset;
2885 int java_lang_reflect_Field::name_offset;
2886 int java_lang_reflect_Field::type_offset;
2887 int java_lang_reflect_Field::slot_offset;
2888 int java_lang_reflect_Field::modifiers_offset;
2889 int java_lang_reflect_Field::signature_offset;
2890 int java_lang_reflect_Field::annotations_offset;
2891 int java_lang_boxing_object::value_offset;
2892 int java_lang_boxing_object::long_value_offset;
2893 int java_lang_ref_Reference::referent_offset;
2894 int java_lang_ref_Reference::queue_offset;
2895 int java_lang_ref_Reference::next_offset;
2896 int java_lang_ref_Reference::discovered_offset;
2897 int java_lang_ref_Reference::static_lock_offset;
2898 int java_lang_ref_Reference::static_pending_offset;
2899 int java_lang_ref_Reference::number_of_fake_oop_fields;
2900 int java_lang_ref_SoftReference::timestamp_offset;
2901 int java_lang_ref_SoftReference::static_clock_offset;
2902 int java_lang_ClassLoader::parent_offset;
2903 int java_lang_System::static_in_offset;
2904 int java_lang_System::static_out_offset;
2905 int java_lang_System::static_err_offset;
2906 int java_lang_StackTraceElement::declaringClass_offset;
2907 int java_lang_StackTraceElement::methodName_offset;
2908 int java_lang_StackTraceElement::fileName_offset;
2909 int java_lang_StackTraceElement::lineNumber_offset;
2910 int java_lang_AssertionStatusDirectives::classes_offset;
2911 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2912 int java_lang_AssertionStatusDirectives::packages_offset;
2913 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2914 int java_lang_AssertionStatusDirectives::deflt_offset;
2915 int java_nio_Buffer::_limit_offset;
2916 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2917 int sun_reflect_ConstantPool::_oop_offset;
2918 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2921 // Support for java_lang_StackTraceElement
2923 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2924 element->obj_field_put(fileName_offset, value);
2925 }
2927 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2928 element->obj_field_put(declaringClass_offset, value);
2929 }
2931 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2932 element->obj_field_put(methodName_offset, value);
2933 }
2935 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2936 element->int_field_put(lineNumber_offset, value);
2937 }
2940 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2942 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2943 o->obj_field_put(classes_offset, val);
2944 }
2946 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2947 o->obj_field_put(classEnabled_offset, val);
2948 }
2950 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2951 o->obj_field_put(packages_offset, val);
2952 }
2954 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2955 o->obj_field_put(packageEnabled_offset, val);
2956 }
2958 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2959 o->bool_field_put(deflt_offset, val);
2960 }
2963 // Support for intrinsification of java.nio.Buffer.checkIndex
2964 int java_nio_Buffer::limit_offset() {
2965 return _limit_offset;
2966 }
2969 void java_nio_Buffer::compute_offsets() {
2970 Klass* k = SystemDictionary::nio_Buffer_klass();
2971 assert(k != NULL, "must be loaded in 1.4+");
2972 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2973 }
2975 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2976 if (_owner_offset != 0) return;
2978 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2979 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2980 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
2981 compute_offset(_owner_offset, k,
2982 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2983 }
2985 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2986 assert(_owner_offset != 0, "Must be initialized");
2987 return obj->obj_field(_owner_offset);
2988 }
2990 // Compute hard-coded offsets
2991 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2992 // are not available to determine the offset_of_static_fields.
2993 void JavaClasses::compute_hard_coded_offsets() {
2994 const int x = heapOopSize;
2995 const int header = instanceOopDesc::base_offset_in_bytes();
2997 // Throwable Class
2998 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
2999 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3000 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3001 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3002 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3004 // java_lang_boxing_object
3005 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3006 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3008 // java_lang_ref_Reference:
3009 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3010 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3011 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3012 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3013 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3014 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3015 // Artificial fields for java_lang_ref_Reference
3016 // The first field is for the discovered field added in 1.4
3017 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3019 // java_lang_ref_SoftReference Class
3020 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3021 // Don't multiply static fields because they are always in wordSize units
3022 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3024 // java_lang_ClassLoader
3025 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3027 // java_lang_System
3028 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3029 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3030 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3032 // java_lang_StackTraceElement
3033 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3034 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3035 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3036 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3037 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3038 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3039 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3040 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3041 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3043 }
3046 // Compute non-hard-coded field offsets of all the classes in this file
3047 void JavaClasses::compute_offsets() {
3048 // java_lang_Class::compute_offsets was called earlier in bootstrap
3049 java_lang_ClassLoader::compute_offsets();
3050 java_lang_Thread::compute_offsets();
3051 java_lang_ThreadGroup::compute_offsets();
3052 if (EnableInvokeDynamic) {
3053 java_lang_invoke_MethodHandle::compute_offsets();
3054 java_lang_invoke_MemberName::compute_offsets();
3055 java_lang_invoke_LambdaForm::compute_offsets();
3056 java_lang_invoke_MethodType::compute_offsets();
3057 java_lang_invoke_CallSite::compute_offsets();
3058 }
3059 java_security_AccessControlContext::compute_offsets();
3060 // Initialize reflection classes. The layouts of these classes
3061 // changed with the new reflection implementation in JDK 1.4, and
3062 // since the Universe doesn't know what JDK version it is until this
3063 // point we defer computation of these offsets until now.
3064 java_lang_reflect_AccessibleObject::compute_offsets();
3065 java_lang_reflect_Method::compute_offsets();
3066 java_lang_reflect_Constructor::compute_offsets();
3067 java_lang_reflect_Field::compute_offsets();
3068 if (JDK_Version::is_gte_jdk14x_version()) {
3069 java_nio_Buffer::compute_offsets();
3070 }
3071 if (JDK_Version::is_gte_jdk15x_version()) {
3072 sun_reflect_ConstantPool::compute_offsets();
3073 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3074 }
3076 // generated interpreter code wants to know about the offsets we just computed:
3077 AbstractAssembler::update_delayed_values();
3078 }
3080 #ifndef PRODUCT
3082 // These functions exist to assert the validity of hard-coded field offsets to guard
3083 // against changes in the class files
3085 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3086 EXCEPTION_MARK;
3087 fieldDescriptor fd;
3088 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3089 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3090 instanceKlassHandle h_klass (THREAD, k);
3091 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3092 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3093 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3094 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3095 return false;
3096 }
3097 if (fd.is_static()) {
3098 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3099 return false;
3100 }
3101 if (fd.offset() == hardcoded_offset ) {
3102 return true;
3103 } else {
3104 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3105 klass_name, field_name, hardcoded_offset, fd.offset());
3106 return false;
3107 }
3108 }
3111 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3112 EXCEPTION_MARK;
3113 fieldDescriptor fd;
3114 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3115 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3116 instanceKlassHandle h_klass (THREAD, k);
3117 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3118 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3119 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3120 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3121 return false;
3122 }
3123 if (!fd.is_static()) {
3124 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3125 return false;
3126 }
3127 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3128 return true;
3129 } else {
3130 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - InstanceMirrorKlass::offset_of_static_fields());
3131 return false;
3132 }
3133 }
3136 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3137 EXCEPTION_MARK;
3138 fieldDescriptor fd;
3139 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3140 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3141 instanceKlassHandle h_klass (THREAD, k);
3142 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3143 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3144 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3145 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3146 return false;
3147 }
3148 if (!fd.is_static() || !fd.has_initial_value()) {
3149 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3150 return false;
3151 }
3152 if (!fd.initial_value_tag().is_int()) {
3153 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3154 return false;
3155 }
3156 jint field_value = fd.int_initial_value();
3157 if (field_value == hardcoded_constant) {
3158 return true;
3159 } else {
3160 tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value);
3161 return false;
3162 }
3163 }
3166 // Check the hard-coded field offsets of all the classes in this file
3168 void JavaClasses::check_offsets() {
3169 bool valid = true;
3170 HandleMark hm;
3172 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3173 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3175 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3176 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3178 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3179 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3181 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3182 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3184 // java.lang.String
3186 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3187 if (java_lang_String::has_offset_field()) {
3188 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3189 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3190 }
3191 if (java_lang_String::has_hash_field()) {
3192 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3193 }
3195 // java.lang.Class
3197 // Fake fields
3198 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3199 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3200 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3202 // java.lang.Throwable
3204 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3205 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3206 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3207 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3209 // Boxed primitive objects (java_lang_boxing_object)
3211 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3212 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3213 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3214 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3215 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3216 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3217 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3218 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3220 // java.lang.ClassLoader
3222 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3224 // java.lang.System
3226 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3227 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3228 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3230 // java.lang.StackTraceElement
3232 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3233 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3234 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3235 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3237 // java.lang.ref.Reference
3239 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3240 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3241 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3242 // Fake field
3243 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3244 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3245 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3247 // java.lang.ref.SoftReference
3249 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3250 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3252 // java.lang.AssertionStatusDirectives
3253 //
3254 // The CheckAssertionStatusDirectives boolean can be removed from here and
3255 // globals.hpp after the AssertionStatusDirectives class has been integrated
3256 // into merlin "for some time." Without it, the vm will fail with early
3257 // merlin builds.
3259 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3260 const char* nm = "java/lang/AssertionStatusDirectives";
3261 const char* sig = "[Ljava/lang/String;";
3262 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3263 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3264 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3265 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3266 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3267 }
3269 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3270 }
3272 #endif // PRODUCT
3274 int InjectedField::compute_offset() {
3275 Klass* klass_oop = klass();
3276 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3277 if (!may_be_java && !fs.access_flags().is_internal()) {
3278 // Only look at injected fields
3279 continue;
3280 }
3281 if (fs.name() == name() && fs.signature() == signature()) {
3282 return fs.offset();
3283 }
3284 }
3285 ResourceMark rm;
3286 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)" : "");
3287 #ifndef PRODUCT
3288 klass_oop->print();
3289 tty->print_cr("all fields:");
3290 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3291 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3292 }
3293 #endif //PRODUCT
3294 fatal("Invalid layout of preloaded class");
3295 return -1;
3296 }
3298 void javaClasses_init() {
3299 JavaClasses::compute_offsets();
3300 JavaClasses::check_offsets();
3301 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3302 }